This content provides a practical, hands-on demonstration of various Battery Management Systems (BMS), motors, and related electronic components used in electric vehicles, contrasting theoretical knowledge with real-world applications and identifying key differences in their functionality and specifications.
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Today the session would be completely
different than the entire session which
we have learned from past two weeks.
From the past week when we started we we
We had started with the basic structures
and the complete basics in and we had
theoretically completely understood how
the entire connections calculations the
yes number of yes the number of parallel connections
connections
everything was
calculated theoretically. Now today let
us try to observe the practical
condition wherein how the exact
practical products are
there. So shall we see with the
practical application how the exact BMS
looks how the controller looks how the
MCU looks or else we'll do the
theoretical parts. We'll continue with
the theoretical part or we will look
into the practical application. How the
BMS looks, how that integration is done
and then how the MCU looks, how the
exact motor looks. We will
go with the practical or we'll continue
the theory. Come on, let me know the answers.
Yes, practical. We'll be seeing into the
complete practical actions where we will
be seeing how exactly the BMS looks, how
exactly the structure will be there, right?
Now for better understanding I'll be
showing you with the practical BMS how
the BMS exactly looks and once you try
to read the data which is mentioned on
the data sheet right you just try to
read the data which is mentioned on the
BMS BMS then I'll be explaining you how
Just try to read the data which is
Read the data which is mentioned on the
BMS and let me know for which battery it
is used and what is the number of series
and what is the maximum current which we
keep the video clarity to 720p so that
Yes, exactly. So this data says that
this is a 16S
this is a 16S BMS already the data is
mentioned this is a 16S 40 amps data and
specifically mentioned as lithium ion
for lithium ion as 3.7 volt is the
operating voltage right this is the
operating voltage of this pack NMC pack
right we have a lithium ion pack of
nominal voltage we also got that the
is 3.7 and the series number of series
is 16 is 40 amps. Right? Now we have
seen one of the example. Now we have got
to seen this small PMS here. Now we have
our NTC here. What is this? We have our
NTC. We also call this as the
temperature sensor. Right? Now we have
our NTC here. We call this as our
temperature sensor also.
Right? Now, now try to answer for this
BMS. Now calculate and let me know for
this BMS what will be the full charge
voltage, cutff voltage
and maximum charging full charge voltage
for which battery pack we can use this
one. For which battery pack we can use
this BMS. And what will be the full
charge voltage and the cutff voltage of
Yes, exactly. The answer for this one is
the full charge voltage which maximumly this
this
BMS requires is of 60 volts. We can use
this BMS for a 60 volt battery pack
with maximum of what is the discharging
current of this one? We can maximally
use it for 40 amps. This says we can
utilize this for maximum 40 amps and
67.2 is the full charge voltage. Now we
have the exact thing. This is our NTC.
We call this as temperature sensor. This
is the wire which will be used for
temperature sensors. Right? This will be
the temperature sensor for sensing the
temperature for operating of our seven
conditions. Even this is one of the major
major
condition. Right? Even the temperature
The temperature sensor will also act as
a important factor temperature sensor.
Now we have two wires which are here.
One will be connected towards the
battery pack because this battery pack
this BMS will be in series with the
battery pack. This one will be connected
to the battery and this will be given as
the output. So we have seen one of the
type of the BMS. Now, now we will see a
different BMS. So, just try to read the
the BMS and check
Yes, exactly. This BMS is a 14S
This BMS is a 14S 48 volt. 40 amps is
the rated power of this BMS. This BMS
can be maximumly used for 40 amps of
discharge and 40 amps of charging
current. But when we saw this BMS there
was only one current which was mentioned
that is 40 amps right we only 40 amps
was mentioned on this one whether we
don't know whether this is charging or
discharging current but when we consider
the practical application of this BMS
always we will consider this BMS as the
discharging current right discharging
current will be the always mentioned
parameters on the BMS whether If the
charging current is not mentioned only
the current is mentioned and
particularly whether it is charging or
discharging it is not mentioned it will
be always considered as 40 amps
as the discharging current. Right now we
read that this is having a 14s 48 40
amps but try to calculate this BMS which
we saw here. Try to calculate this full
charge voltage, nominal voltage and the
cutff voltage of this one.
This BMS
try to calculate the full charge
voltage, the cutff voltage and the
Whenever you're typing the answer, make
sure that in single text you will type
the answers
because we are seeing many students who
For the battery pack which we saw now
what is the full charge voltage? It is a
14S battery pack right? For a 14S
battery pack what is the full charge
voltage cutff voltage and the nominal voltage.
Yes. But on this BMS if you can see the
voltage mentioned is 14s but the
mentioned as 48 volts
right but actual cutff voltage is of
51.2 2 but in this one they have
mentioned as 48 volts right so this 14S
is always considered in the practical
application as 48 but we being engineers
we should always be careful that while
selecting this BMS we if we want the 14s
we have to select the 51.2 2 if we want
the 13S we want to select the
13S for 48 volt 51.2 for 14S. Now if I
use this 14S battery pack
based on the voltage which is mentioned
on this BMS. Now on this BMS we have
mentioned it as 48 volt 48 volts on the
mentioned by the way if in case if I use
a 48 volt charger. Now listen from my
practical question wherein practical
analysis has to be done. Now in the
practical application in theoretical we
have learned about the full charge
voltage, the cutff voltage, the charging
current everything we have learned about
all those factors. Now when it comes for
the real world this is a 14S BMS. Now we
have we will install this BMS in for a
14S actual BMS. But this says it is a 48
volt. In case a non-engineer who doesn't
know what is 14s, he will get a 48 volt
charger and he will charge this battery
pack. What will happen?
Think the situation and let me know on
this BMS it is mentioned as 48 volts but
this is a 14S pack. What will happen if
a non-engineer comes and if we charge
our 14S battery pack with a 48 volt
Think and let me know what will happen
Think, do the calculation and let me
know. Do the calculation, think and
One hint there will be no changes or
effect in the lower cutff region. CutffF
region there will be no effect because
we are talking about the charging parameters.
No, it won't get over it and BMS will
if a non-injure comes and uses a 48 volt
charger in for a 14 years pack? What
will happen? Nothing.
there will be one effect which is the
thing. Now we will see this one. What
will be the effect? What will happen for
this one? We will check in after
calculating for this BMS. See this is
the BMS. Now try to read the data on the
which is mentioned on this data sheet.
Try to read the data sheet which is data
This is a 13S 40 amps BMS which says it
is for lithium ion right this is a
lithium ion battery pack for 3.7 volt
13S 40 amps
right this is the parameter now try to
do the calculation. Now let me know what
is the full charge and cut off voltage
of this BMS
till where I can maximally use this BMS.
What will be the full charge? Charger
which I which is the charger which I
which is the charger that we have to
select for this BMS for a 13S BMS.
Which is the charger that we have to select?
Yes. 54.6
is the full charge voltage. 39 volts is
the cutff voltage.
Right. Nominal it is 48 volt. Right? Now
that we have got
Now we have got the mention as we know
that the full charge voltage of this 13S
we know that the full charge voltage of
this 13S is 54.6
54.6
right 13S
54.6 62 full charge voltage. But when we
got our 14s,
when we had our 14s BMS, what is the
full charge of this 14 SBMS?
14S full charge voltage is obviously 58,
right? What is the full charge voltage
of 14S? And what is the full charge
voltage of 13S? Mention for 13S, what is
the full charge voltage? For 14S, what
is the full charge voltage?
Obviously yes for a 14 for a 14s BMS for
58.8 8 is the full charge voltage and
yes mention
for a 14 years pack It is 54.6 is the
full charge voltage. But when it comes
for a 14S, it is 58.8 voltage. There is
a difference of 4 volts. Right?
Difference. Nala difference.
So whether our battery pack will get
will our battery be completely charged?
No. Right? This is one of the funniest
biggest challenge in the industry.
Right? People in the industry what
they'll do is
inside the battery pack they have a 14s
battery pack but on the BMS it is
mentioned as 48 volts people will see
the 48 volts not the 14S 14SA
14S they'll only read the 48 volts and
they'll select a 48 volt charger at that
time what will happen overall efficiency
will be affected right overall
efficiency will be affected. It will not
get fully charged. Range drop will be
obviously there because you know 4 vol
charger almost you know 20 to 30% charge
battery pack. Everyone understood the
This is the practical problem wherein
for a 14s it is 58.8 8 is the full
battery charge.
Now this is for the full charge
condition. Now think about the lower
cutff. Lower cut off. Lower cut off
Right. Now what will be the difference?
in the lane problem at this condition?
obviously for a 14S the cutff voltage is
42 volts. Right? For a
14s it the cutff voltage is
42 volts. But what is the cutff voltage
What will happen at that condition? 42
cutff for this 14s which is there. We
have our 14s BMS now. Now for this 14 SBMS
SBMS
actual condition the cutff should be
happen cutff should happen at
42 volts but if I am using my 13S
if I'm using my 13S as the cutff what
our load will think is still it has to
in 13s it should work till 39 volt but
at 42 volts only if it is getting turned
off our system will think that the
battery has some fault because still the
30% of the energy will be left out
inside the battery pack. The battery
will get shut down. Right? Actually 39
shut up by call if it is a 48 volt it
should shut for 39 volt. But if you use
14S in that condition what will happen?
If you use 14S in that condition
obviously there will be still some
This is what will happen. Now we have
seen a 13s BMS. We have our 13SBMS now.
And we saw our
14 SBMS. We saw our 14 SBMS. Then
we saw our 16s, 13s
and 14s. We have our 13S here. We have
our 14s here and we have our 16S here.
of NMC here. We have seen NMC. Now let
us see the different type of application wherein
this is an example for just try to read
the data
try to read the data which is mentioned
What it says? This is a [snorts] 16S
48 volt. Why this is 16s 48 volt?
Because this is a LFP battery pack.
Already the power is mentioned on this
one as LFP. Right? We have mentioned we
have the category already mentioned as LFP.
Now try to mention the full charge
voltage. Now we can see there is some
difference of charge current here and
the discharge current. The charging
current and the discharging current both
are different on the practical
application of this MIMS. Discharging
current and charging current both are mentioned
mentioned
and it says it is a lithium feroh
phosphate. This is a LFP battery pack of
16s. What will be the full charge voltage?
for a 16S
[snorts]
Do not get confused. See I am I'm see
arranging this session of a practical
because you won't get confused with a
16S NMC pack and 16S LFP pack right you
should not get confused in between a 16S
understood this is 16s NMC which is of
67.2 2 is the full charge voltage. But
when it comes for the
the
LFB, what will be the full charge
voltage? Try to calculate what is the
Also mention the cutff voltage. Also try
Yes, exactly. The BMS which we are
seeing is of 16S
LFP with full charge voltage of 57.6
44 volt right 44
voltage the cutff voltage. Now how we
got that how we got that calculations
it is very simple very simple right we
now if we try to calculate it we have
our 16S and the nominal wtage is of 3.2
We we are seeing different practical
applications. Now try to read the data
What this says? This is a 19s 40 amps.
Right? This is a 19s 40 amps. But which
type of B battery this will support?
Which type of battery will this support?
Will this support for a NMC or an LFP?
Whether this is a LFP or NMC battery
pack. Try to read the data carefully.
This says this is a LFP battery pack of
3.2 2 volt nominal 19s as the
try to mention the full charge voltage
and the cutff voltage of a 19S 40 amps
Now that we have this full charge
voltage, obviously this is for a what is
the full charge voltage and nominal
voltage for this one?
cutff voltage and 60.8 is the nominal
voltage. 53.2 is the cutff voltage for
this BMS. Now
I have one more BMS. We can compare
these two BMSs here. This BMS says this
is a 16S pack. But for a NMC, right?
This is a NMC battery pack. This is a
This is a NMC battery pack of 16S. Even
this is of 60 volt. Right? Even this is
60 volt. What about this?
This is also what is the nominal voltage
of both 19S what is the nominal voltage
>> [groaning]
>> For a 16SBMS,
for a 16SBMS,
we have our full charge volt, nominal
voltage of 60 volt, right? This is the
nominal voltage. But when it comes
pack, what is the full charge voltage?
Nominal voltage. This is 60. 8.
8.
60.8 8 is the nominal voltage of this
BMS of this is of LFP.
This is of
NMC. Right? This is LFP because already
it is mentioned on the data here that
this is an LFP battery pack and this is
a NMC battery pack.
Right? Now we have seen both kind of
thing. Now let me know in while studying
BMS types we had studied two different
types of BMS. One was the BMS which will
give only the protection right. One was
the BMS which gives only the protection.
We cannot see what is the
input and output which is having inside
the battery pack. If BMS
data that is what we had but now this is
a normal BMS. This BMS which you are
seeing this is a completely normal BMS
without any smart communication. This
will only act as a protector. This wires
which you are seeing this bunch of
wires. See you can can you just count
how many number of wires are coming out
from this one.
Just try to count how many number of
Negative. We have our negative also here.
Negative 1 2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 18 19 20. How many words are there?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Except negative, we have 19.
Except negative, we have 20 wires
mentioned on this
wires. Right? Including negative we have
21 wires here. Including negative we
have 21 wires here. Without neg without
negative we have 20. With negative we have
have
with negative we have 21 wires. Now but
this says this is a 19s pack. This is
saying that this is a 19s pack. But we
have 21 wires. Why is that?
Rather this says that this is a 19S pack.
pack.
This is a 19S pack. But we have 21 wires here.
here.
One is for negative obviously. Okay.
Fine. You understood that we need the negative.
negative.
This is the negative part and this is
for the thing. The main reason is the
main reason that we have all this
20 even though this is 19s 19 number of
because to read the total battery pack
wtage to read the total battery pack
voltage. This is a smart BMS. This is
considered as a smart BMS. Right? We have
this last port which is here. This last
wire is there. Right? The red one. The
last wire is considered the last wire is
considered for to read the entire
battery package. Now if we have this
negative and positive, can I read the
entire data of the my battery pack?
Because this will be at the posit
starting negative. This will be at the
ending negative. Right? is starting
ending by using both of these two wires.
my entire battery pack? Yes, I can now
measure my entire battery pack. See this
is splitted because port socket
the physical strength of this socket
will be not that much good. The length
you go,
the physical strength will be lesser.
But as the shorter the terminal,
physical strength will be more. Right?
We can consider this entire thing as one.
one.
Now that we have the Now that we have
understood that negative is there and
the last positive to read the entire
data pack. This individual series wires
which has to be connected for the
battery pack will measure the individual
data that is what we have got. Now that
we have seen the LFP battery pack NMC
can you just identify any difference.
Now just imagine that we don't have this
uh sticker the data sticker which is
mentioned on this one. Can we identify
No obviously mention.
So for this one to write this data data
sheet in mention to write this data
itself you need lot of core knowledge
how number of SKM what is the number of maximum
maximum
current which you can take whether it is
LFP NMC LFP cut offage different cut off
14
but actually 14
but 48 charger 48 voltage 48 structures
yes All these are for smaller battery
pack. Obviously 60 volt 72 volts will be
for two wheelers. Now we will also go
for the bigger four-wheeler BMSs also.
We will see uh that category also. This
is now you're clear with this BMS
16s. We saw different different types of
Now there is one more example. Just read the
the
data. We have one more example here. Try
Common port with balance says that this
BMS can balance it. Common port with
balance. What happens in BMS? We have
two different category. One is that it
can only monitor and protect. It cannot
balance. If you want the balancing part,
we have to add different wires. This
wires we have to add different wires in
some DMS. But this BMS is compatible
with the same port common port in the
sense even for sensing same wires are
used even for balancing same wires are
used right with say with balance in the
sense even for the balancing the same
wires will be used even for the sensing
part same wires will be used. Now this
is the 14S 40 amps for a NMC pack right?
This is a NMC pack BMS. Now that we have
what is the rating of this BMS.
This is also 14s 40 amps. Right? This
BMS which you saw this is also 14s 40 amps.
amps.
This is also 14s 40 amps BMS. This is
also 14s 40 amps. But can you see the
Can you just observe the
size difference?
There is lot of
>> Yes. Uh, sorry for the interruption. Am
Yes. Now that we have seen the
comparison of this BMS and this BMS. Now
the thing is the size of this entire BMS
is different. Right? Even though this
BMS is of 14S, even this is of 14S 40
amps, we have the different
we have the different parameters
of the entire structure here which is
there. The size is completely different
which we have completely different in
this entire structure. What makes the
size difference?
The thing is this BMS which you're
seeing this is completely waterproof.
This is IP rated. The
This BMS is completely sealed. Can we
see any circuit which is mounted on this
one? There is no we cannot see the naked
circuit on this one. Right? But on this
BMS we can see the components the
electronic components which are
mentioned on this nakedly. This is
completely exposed and this is
completely IP packed. And the major
difference comes is
this BMS is with active balancing. This will
will
this can balance the battery pack as
this term says common port with balance.
This can balance the battery pack. But
this BMS can only monitor and protect
our battery pack. Only thing it can do
is it can just monitor and protect the
entire battery pack. Right now we will see.
Now we will see the next type of BMS
see this is how the rear portion of the
BMS will be. This is how the rear
portion will be. These are the sensing
wires. This is the front view.
This is where the sockets this wires
will be inserted and rear view of this
one is
each of the wires will be mounted on
this one. From each of the wire each
thing will be monitored for monitoring
each of the wire each sensor will be
mounted on this one.
Right? This will be there. [snorts]
Now try to read this data. Now try to
Yes. Right. Now we have seen this BMS.
This entire BMS which we have here. This BMS is a smart BMS wherein we can have
BMS is a smart BMS wherein we can have the CAN communication. See these are the
the CAN communication. See these are the CAN ports which we have. These are the
CAN ports which we have. These are the CAN ports wherein we can take out the
CAN ports wherein we can take out the data from this BMS and we can see it on
data from this BMS and we can see it on our monitor right for connecting it to
our monitor right for connecting it to our VCO everything we can monitor. This
our VCO everything we can monitor. This is the CAN protocol communication. This
is the CAN protocol communication. This is the CAN. Can you see the data which
is the CAN. Can you see the data which is mentioned as CAN?
This is the can communication thing for connecting it to our VCU and for the
connecting it to our VCU and for the communication purpose. Right now we have
communication purpose. Right now we have seen different different types of even
seen different different types of even this is one of the type.
this is one of the type. This is also one of the smart BMS type.
This is also one of the smart BMS type. [snorts]
[snorts] This is also a smart BMS type which has
This is also a smart BMS type which has data on All right.
>> Now we have just I'll try to remove that one. Now just try to read this BMS data.
one. Now just try to read this BMS data. The readings which is mentioned on this
The readings which is mentioned on this BMS is completely different compared to
BMS is completely different compared to other BMS which we saw. The data which
other BMS which we saw. The data which is mentioned on this BMS is completely
is mentioned on this BMS is completely different.
This says this is a lithium ion BMS for a 60 volt pack.
They have not mentioned anything on this mess. There are some nonsense foolish
mess. There are some nonsense foolish manufacturers also who will not mention
manufacturers also who will not mention the exact data sheet right because they
the exact data sheet right because they don't want any of the other
don't want any of the other manufacturers or other factors to be
manufacturers or other factors to be verified for the entire thing. Right? So
verified for the entire thing. Right? So this is there is nothing which is
this is there is nothing which is mentioned on this.
Now we have seen all the multiple different examples of CAN BMS the
different examples of CAN BMS the non-can BMS. This BMS this is also a
non-can BMS. This BMS this is also a kind of BMS wherein it is used for
kind of BMS wherein it is used for complete complex one. Can you guess this
complete complex one. Can you guess this BMS? This is also a BMS.
BMS? This is also a BMS. This thing which you are seeing this is
This thing which you are seeing this is also BMS wherein the battery CV wires
also BMS wherein the battery CV wires will be connected here.
will be connected here. There is no technical data mentioned on
There is no technical data mentioned on this entire battery pack. No, now that
this entire battery pack. No, now that there is no technical data which is
there is no technical data which is mentioned on this pack. How to identify
mentioned on this pack. How to identify which battery pack is this.
This BMS belongs to [snorts] just try to read the name. This
[snorts] just try to read the name. This BMS belongs to
which brand BMS is this? Yes, exactly. This is a Ola electric two
Yes, exactly. This is a Ola electric two wheelers BMS. This is a Ola electric two
wheelers BMS. This is a Ola electric two wheeler BMS. the complete robustic
wheeler BMS. the complete robustic BMS and advanc this BMS itself will cost
BMS and advanc this BMS itself will cost you around 15 to 13,000 13 to 15,000
you around 15 to 13,000 13 to 15,000 this entire BMS which you're seeing this
this entire BMS which you're seeing this will cost you around 15,000 rupees right
will cost you around 15,000 rupees right all these BMS will cost you around 3 to
all these BMS will cost you around 3 to 4,000 for a two wheeler kind of setup
4,000 for a two wheeler kind of setup this BMS will cost you around 3,000 to
this BMS will cost you around 3,000 to 4,000 and all these BMS will cost you
4,000 and all these BMS will cost you around 13 to 15,000. Now what major
around 13 to 15,000. Now what major difference this makes? Now we got to
difference this makes? Now we got to know that in Ola see I'll be showing you
know that in Ola see I'll be showing you the thing in Ola
the thing in Ola the battery pack used is of 14S. In Ola
the battery pack used is of 14S. In Ola we have used a 14S pack right I can use
we have used a 14S pack right I can use this BMS in for my Ola
this BMS in for my Ola because my battery pack says it is 14s.
because my battery pack says it is 14s. Even the data which is mentioned on this
Even the data which is mentioned on this it is also 14S right? So I can use this
it is also 14S right? So I can use this BMS also in Ola. Can I use it? Because
BMS also in Ola. Can I use it? Because my battery pack of Ola is 14s. Even I
my battery pack of Ola is 14s. Even I have a BMS of 14s. Can I use that
have a BMS of 14s. Can I use that battery pack in Ola?
Obviously if I want to use that battery pack without running, I can protect my
pack without running, I can protect my battery pack with this one. But the Ola
battery pack with this one. But the Ola electric vehicle has a integrated VCU in
electric vehicle has a integrated VCU in that one. BCU what it will do is this
that one. BCU what it will do is this will have complete CAN communication of
will have complete CAN communication of the data and the complete parameters
the data and the complete parameters voltage working everything is same even
voltage working everything is same even working of this BMS is same even working
working of this BMS is same even working of this entire big BMS which you're
of this entire big BMS which you're seeing that is also same the only thing
seeing that is also same the only thing is current see this is also 14S of
is current see this is also 14S of 51.2 volt but this is also of 50 14S of
51.2 volt but this is also of 50 14S of 51.2 2 volts right but the only thing
51.2 2 volts right but the only thing difference is this can maximally give up
difference is this can maximally give up to 200 amps. This can give only maximum
to 200 amps. This can give only maximum of what is the maximum current which I
of what is the maximum current which I can take out from this BMS
it is 40 amps. 40 amps is the maximum current which I can take out. Right? But
current which I can take out. Right? But for using my vehicle in such high
for using my vehicle in such high performance mode, I need a 200 amps BMS
performance mode, I need a 200 amps BMS which has to support. So this is what
which has to support. So this is what the size difference also matters. This
the size difference also matters. This is a 40 amp size and this we are seeing
is a 40 amp size and this we are seeing is of a 200 amps BMS right which has the
is of a 200 amps BMS right which has the CAN communication pin also. This is for
CAN communication pin also. This is for the CAN communication. Even the CAN is
the CAN communication. Even the CAN is mentioned on
the board here. Even that is mentioned. You can see that the CAN is mentioned on
You can see that the CAN is mentioned on the board here
the board here can communication
and these are all the practical application of the thing. Now we have
application of the thing. Now we have when we see the BMS this BMS has only
when we see the BMS this BMS has only two wires. One is connecting for the
two wires. One is connecting for the output of the battery pack. One we will
output of the battery pack. One we will connect it to the battery pack that
connect it to the battery pack that every know everyone know that this will
every know everyone know that this will be in series with the battery pack. But
be in series with the battery pack. But when we come across with this BMS, this
when we come across with this BMS, this BMS has four terminals here. We have two
BMS has four terminals here. We have two terminals here, two terminals here.
terminals here, two terminals here. Right? Basically, this is operating in a
Right? Basically, this is operating in a completely different portion wherein
completely different portion wherein this BMS will be controlling the
this BMS will be controlling the negative of the battery pack. This one
negative of the battery pack. This one we'll be connecting it to the negative
we'll be connecting it to the negative of the battery pack and the negative
of the battery pack and the negative output will be there. According to the
output will be there. According to the circuit diagram which we saw in our PPD
circuit diagram which we saw in our PPD hope everyone remember the PPD. When we
hope everyone remember the PPD. When we remember the PPD negative of the battery
remember the PPD negative of the battery pack will be connected to the BMS and
pack will be connected to the BMS and output will be connected. But in this
output will be connected. But in this Ola battery pack BMS the main thing
Ola battery pack BMS the main thing happens is even both
happens is even both positive and negative will be connected
positive and negative will be connected here. Right? So you can just see the
here. Right? So you can just see the I'll try to show
I'll try to show see this is the data mentioned on the
see this is the data mentioned on the battery pack here. This says this is the
battery pack here. This says this is the battery positive and the other terminal
battery positive and the other terminal says that is the battery negative.
says that is the battery negative. Right? The BMS will be mounted in this
Right? The BMS will be mounted in this way. We will place our positive here.
way. We will place our positive here. We'll place our negative here of the
We'll place our negative here of the battery pack and the output will be
battery pack and the output will be controlled here. Both positive and
controlled here. Both positive and negative output will be controlled in
negative output will be controlled in this one. So this is a much more
this one. So this is a much more advanced BMS which we use [snorts]
advanced BMS which we use [snorts] right
now that we have seen the smart BMS and the entire structural thing BMS
the entire structural thing BMS done.
done. Do you want to see the actual vehicle
Do you want to see the actual vehicle setup how the vehicle setup will look
setup how the vehicle setup will look like? Yes, I have turned off the video.
like? Yes, I have turned off the video. Do you want to actually see the actual
Do you want to actually see the actual practical
practical video setup? Uh vehicle setup how the
video setup? Uh vehicle setup how the vehicle will work
vehicle will work now that we have connected the BMS.
now that we have connected the BMS. Yes. Right. So I'll be showing please
Yes. Right. So I'll be showing please try to register that the video will be
try to register that the video will be bit shaking.
bit shaking. I'll show in the online in offline you
I'll show in the online in offline you will be exploring that completely but I
will be exploring that completely but I want before you guys come to the offline
want before you guys come to the offline session we want you to be completely
session we want you to be completely thorough with what
Mic had got muted. Now this is the entire actual practical cut section view
entire actual practical cut section view of the entire electric battery pack
of the entire electric battery pack which you have.
This is how the cells will be there. The arrangement of cell the entire
arrangement of cell the entire structure. This will be the entire
structure. This will be the entire battery pack
battery pack which is under troubleshooting mode.
which is under troubleshooting mode. Right now without wasting any time we
Right now without wasting any time we will be directly moving to the vehicle
will be directly moving to the vehicle setup where the integration of harness
setup where the integration of harness will be there. the integration of the
will be there. the integration of the motors will be there. We will see with
motors will be there. We will see with the actual practical MCU, right? We'll
the actual practical MCU, right? We'll be seeing that
See this is our entire vehicle which is completely naked down worn out.
completely naked down worn out. Can you see? Can you identify which part
Can you see? Can you identify which part is this?
is this? We had seen multiple like application.
We had seen multiple like application. Can you see which part is this?
Yes, exactly. This is the harness. Wiring harness. What has
harness. Wiring harness. What has happened for this wiring harness?
happened for this wiring harness? This wiring harness has completely
This wiring harness has completely become rat bite. The complete harness
become rat bite. The complete harness has become rat bite. The rats have been
has become rat bite. The rats have been completely worn out this harness. Inside
completely worn out this harness. Inside this harness exactly this is how the
this harness exactly this is how the look will be there.
look will be there. Now we will look into the MCU part.
[snorts] >> [cough]
>> [cough] [clears throat]
>> Now this is the complete this is a virtual setup. This will be a virtual
virtual setup. This will be a virtual setup where we have our motor. This is
setup where we have our motor. This is which type of motor? [laughter] The
which type of motor? [laughter] The motor which we are seeing is which type
motor which we are seeing is which type of motor is this?
Which yes this is a mid dry motor. And which type of motor is this?
>> Which type of motor is this? [clears throat]
This is a hub motor, right? This is a hub motor.
hub motor, right? This is a hub motor. And the cut section of this hub motor,
And the cut section of this hub motor, how the cut section of the motor will be
how the cut section of the motor will be there? This will be the inside part of
there? This will be the inside part of the entire motor. And what do we call
the entire motor. And what do we call this as?
Yes, this is the hall sensors wherein [snorts]
[snorts] the sensing part will be done for the
the sensing part will be done for the magnetic polarity identification. Right.
magnetic polarity identification. Right. This is the head section view of the
This is the head section view of the entire hub motor. Now we have two
entire hub motor. Now we have two different types of motor. One we have
different types of motor. One we have the hub motor and we have the mid drive
the hub motor and we have the mid drive motor also. What is the difference in
motor also. What is the difference in the midray motor the middle part will be
the midray motor the middle part will be rotating but in the mid motor the
rotating but in the mid motor the external part will be rotating. Right?
external part will be rotating. Right? See when we are trying to rotate
See when we are trying to rotate the middle part the shaft will be the
the middle part the shaft will be the stationary part and the rotating part
stationary part and the rotating part will be the outer thing.
[snorts] Right now shall we try to turn on this
Right now shall we try to turn on this [laughter] setup and we'll try to uh run
[laughter] setup and we'll try to uh run this motor. We will try to run this
this motor. We will try to run this entire motor how exactly the setup will
entire motor how exactly the setup will work. Right now this is a virtual
work. Right now this is a virtual battery. Uh this is the battery pack
battery. Uh this is the battery pack which we have created for our testing
which we have created for our testing purpose. You can see that we have the
purpose. You can see that we have the testing
testing CV W. We have our sensing W. Here
CV W. We have our sensing W. Here [snorts]
[snorts] we have our CV sensing wires
we have our CV sensing wires and we have our input and the output.
and we have our input and the output. We'll be connecting that to our load.
Before to before going into the structural thing, I would like to
structural thing, I would like to explain you the few parts the major
explain you the few parts the major components of this entire vehicle which
components of this entire vehicle which will be the main operating thing. The
will be the main operating thing. The battery pack. We have our battery pack
battery pack. We have our battery pack here and we have our Can you just
here and we have our Can you just identify what is this part? Which type
identify what is this part? Which type of part is this?
this is the MCU see because this is the MCU what are the inputs that we are
MCU what are the inputs that we are getting we We are getting the battery
getting we We are getting the battery negative. We are getting the battery
negative. We are getting the battery positive. And we have our three outputs.
positive. And we have our three outputs. The color also which was mentioned the
The color also which was mentioned the yellow, green, blue. The sequence
yellow, green, blue. The sequence yellow, green, blue. We have our three
yellow, green, blue. We have our three sequence which are connecting and few
sequence which are connecting and few other wires are also we are getting the
other wires are also we are getting the output of few other W where mean the
output of few other W where mean the hall sensor hall sensors w there and the
hall sensor hall sensors w there and the other connectivity the motor temperature
other connectivity the motor temperature the controller temperature everything
the controller temperature everything this data will be sent to our VCU right
this data will be sent to our VCU right now that we have understood this is our
now that we have understood this is our MCU
MCU we have other different types of MCU
we have other different types of MCU also which we'll be seeing
And we have the next part. This is our VCU.
This is our VCU. >> [snorts]
>> [snorts] >> This part is our VCU wherein you can
>> This part is our VCU wherein you can just see
just see the
the processor the controller thing the
processor the controller thing the entire
entire operation the it has this VCU has the
operation the it has this VCU has the connection of entire vehicle you can see
connection of entire vehicle you can see there are number of wires [laughter]
there are number of wires [laughter] which are coming for this vehicle right
which are coming for this vehicle right there.
So each and every part each and every part from the battery from the motor
part from the battery from the motor from the controller we have the entire
from the controller we have the entire connections coming for the VCU here.
connections coming for the VCU here. Right
now we have our display here the displaying instrument and we have our
displaying instrument and we have our VCU here. Now we will try to turn on the
VCU here. Now we will try to turn on the setup and we will check how the entire
setup and we will check how the entire battery pack will be working. Right.
the additional drive when the motor starts to rotate the belt will be
starts to rotate the belt will be mounted here and the rear shaft will
mounted here and the rear shaft will rotate. Can you I think everyone you can
rotate. Can you I think everyone you can see the rotation of the rear shaft.
This is how a mid motor will be there. In the practical scenario, I'll just try
In the practical scenario, I'll just try to show how the mid motor will be
to show how the mid motor will be actually mounted. Right now this
actually mounted. Right now this [snorts] vehicle which you are seeing
[snorts] vehicle which you are seeing here is the mid drive motor which we we
here is the mid drive motor which we we have the hub drive motor. The hub drive
have the hub drive motor. The hub drive motor is mounted here.
The tire will be mounted and the shaft will go in
and this [laughter] entire rotation of the wheel will be done. This is how the
the wheel will be done. This is how the hub motor exactly looks like
hub motor exactly looks like right and we'll also see an application
right and we'll also see an application of a midrive motor how the midrive motor
of a midrive motor how the midrive motor actually looks like.
Here we have our mid drive motor mounted and we can see the belt here.
This One is our hub drive mid drive motor. We have our belt mounted here.
motor. We have our belt mounted here. The shaft will be connected to the rear
The shaft will be connected to the rear and the rear wheel will there rear wheel
and the rear wheel will there rear wheel will start to rotate. This is how the
will start to rotate. This is how the setup will be there. Hub drive and a mid
setup will be there. Hub drive and a mid drive motor.
We have a better example. The belt, the rear pulley. We have the rear pulley
rear pulley. We have the rear pulley here. The belt is mounted for the mid
here. The belt is mounted for the mid drive motor. The motor is mounted in
drive motor. The motor is mounted in between the vehicle there. And we have
between the vehicle there. And we have our belt driving the entire vehicle. So
our belt driving the entire vehicle. So we have our mid drive motor here and the
we have our mid drive motor here and the hub motor also. We saw the hub motor and
hub motor also. We saw the hub motor and the mid drive motor how exactly the
the mid drive motor how exactly the difference will be there.
This is what the complete view which we got for the different types of BMS and
got for the different types of BMS and the different types of MCU also we'll be
the different types of MCU also we'll be learning. Now for today's session we'll
learning. Now for today's session we'll wind up the session the practical thing
wind up the session the practical thing in the evening session we will have the
in the evening session we will have the overview of the complete thing whatever
overview of the complete thing whatever we have learned from the basics from the
we have learned from the basics from the battery pack to the BMS to the MCU to
battery pack to the BMS to the MCU to the motor we will integrate all the
the motor we will integrate all the vehicles at once and we will see the
vehicles at once and we will see the setup in the evening session right so we
setup in the evening session right so we have seen different different practical
have seen different different practical for today's uh VTU diary you can upload
for today's uh VTU diary you can upload that the practical applications
that the practical applications conditions which we saw the BMS. We
conditions which we saw the BMS. We compared the 14S BMS with the actual 40
compared the 14S BMS with the actual 40 48 holds and 13S. We got to know the
48 holds and 13S. We got to know the difference of a 13S 48 and a 14S 48 and
difference of a 13S 48 and a 14S 48 and we got different comparisons of the
we got different comparisons of the entire BMS. Right? So in the evening
entire BMS. Right? So in the evening session we will be covering up the
session we will be covering up the entire motor parts MCU part different
entire motor parts MCU part different types of we saw different types of BMS.
types of we saw different types of BMS. Now the connections of different BMS
Now the connections of different BMS which we have the 14S the 13s we have
which we have the 14S the 13s we have completely different types of BMSs right
completely different types of BMSs right now that we have seen the different
now that we have seen the different types of BMS in the evening session
types of BMS in the evening session we'll be also seeing the different types
we'll be also seeing the different types of
of MCUs which will be there right so after
MCUs which will be there right so after the evening session in the evening
the evening session in the evening session we will also discuss about how
session we will also discuss about how the offline sessions will be there and
the offline sessions will be there and for the next or further students who
for the next or further students who have the complete online session what
have the complete online session what will be there we'll have a Q&A session
will be there we'll have a Q&A session for the entire week's
for the entire week's program which we have done. So we will
program which we have done. So we will be continuing in the evening session
be continuing in the evening session right. So there is some disturbance
right. So there is some disturbance we'll continue the session in the
we'll continue the session in the evening. Bye everyone. Thank you. We
evening. Bye everyone. Thank you. We will meet in the evening session.
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