This content provides a practical, hands-on overview of electric vehicle (EV) components and their integration, focusing on battery packs, controllers (MCUs), and vehicle control units (VCUs), with a detailed walkthrough of a diagnostic setup and a comparison of mid-drive vs. hub-drive systems.
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[clears throat] Hello
had your lunch. [snorts]
Yes. [snorts]
So just have a reminder
just a remembering session.
type BMS just remember what are the BMS
which are the type of BMS which we have
seen in the morning session we saw all
the practical combinations of 14S 13S
16S 20s right yeah are different types
of BMS now
in that we also got to know even for a
14S BMS the voltage which will be
mentioned as 48 volt if you are
mentioning it as 48 volts.
What will be the effect
that the battery will not get fully charged
charged
and we cannot completely utilize the
battery pack. That is what we got it
right. We have understood that scenario. Now
Now
that we will be also seeing how the exact
vehicle setup the harness we also saw a harness
where a harness was rat bitten right
battery pack is integrated. Right. So
shall we start?
Shall we see the practical integration
of the battery, MCU, VCU and the entire
This setup which you are seeing is the
entire battery pack the big shape
battery pack and I want I'll be showing
just showing you a parameter calculation
just try to read the calculation which
is this is the exact battery pack which
we have shown we had shown that this is
the exact Ola battery pack right so what
is the specification that is mentioned
on the Ola battery pack just try to read
out the data which is mentioned on the
>> [snorts]
>> It says this is a 4 kow battery pack,
right? This is a 4 kilow battery pack.
Also try to read the pack reading. How
what is the series rating of this one?
Try to calculate the series rating of
this battery pack. This entire battery
pack. Now try to read the series
sequence. So what is the series number
of series inside this battery pack with
the specification which is mentioned on
The entire specification of this one
which says this is a 4 kow battery pack.
Minimum voltage says minimum wtage is 35
volt. And what is the maximum wtage of
this battery pack? Maximum wtage of this
battery pack is of 58.8
volt and nominal pack capacity is 76.8h.
76.8h.
pack capacity right and just try to
calculate if per cell is of
4 ah what will be the total number of
cell inside this battery pack with the
actual practical example this is the
exact battery pack right this is the
exact battery pack which we have now
inside this battery pack only [snorts]
by measuring the data pack can we
calculate how many number of cells are
there inside this. So just try to need it.
Now hope it is clearly visible right?
Try to mention total number of cell
What is the total number of cells inside
[snorts]
>> This is a NMC battery pack. This is an
enemies. [snorts]
What is the total number of cell inside
this battery pack? Quick try to answer.
What is the total? Now we are working
with the practical application. Now one
week complete again. Now almost from 2
weeks we have learned the calculation.
We have done many calculation for this
battery packs. Right? We have done many
calculation for this battery pack. Now
we have a practical application. Try to
calculate the
total number of cells.
See, let me give you a quick
explanation. Right now, first before
going to the number of cells, tell me
what is the number of series in this one?
one?
Number of series. What is the S rating
of this battery pack? What is the S rating?
[snorts]
What is the S rating of this battery pack?
[snorts] Want answers from everyone.
What is the yes rating of this battery pack?
Till now
Yes. See now let us try to calculate
with this one. Now everyone try to
calculate this one. Have your calculator
or if you can calculate just try to do
this calculation. Now this battery pack
says most of the answers which we are
getting is wrong. Right now we will try
to get the answer the exact answer. This
battery pack says that this is a 58.8
volt battery pack. That this also says
that this is the maximum wtage of the
battery pack. Right? This says that this
is the maximum wtage. This is not the
nominal voltage. This says the maximum
voltage. Maximum voltage in the sense it
is full charge voltage. Right? It when
it comes for the maximum voltage thing,
It is always the full charge voltage
which we'll calculate with. Now when I
divide to get to know the number of
series, what should we do? We have to
divide with the maximum wtage with 3.7
or 4.2
we should obviously calculate with 4.2
right because this is the maximum wtage
this is maximum wtage in the sense it is
4.2 right so basically this is 58.8
divided by 4
4.2 2 what is the answer we'll get
what is the answer that we'll get
for a 58.8 volt divided by 4.2 the full
charge voltage of NMC we will get around
14 yes
exactly right 58.8 divided by
4.2 58.82 Max
58.8 divided by 4.2 gives us number of
series. If you divide it by nominal
right obviously this is a 14s pack right
now next we have our we got to know that
14 is the number of series now we have
to find out number of p right we have to
find out number of P in this battery
pack. Now, now what is this pack saying?
This is a 76.8 aha 76.8 8 divided by par
see when we go with the minimum voltage
you'll get it as the lesser thing but
this minimum wtage should not always be
considered always try to calculate with
the maximum voltage itself the maximum
wtage calculation is better always
because this minimum wtage to this BMS
if this BMS PMS [snorts] has to work in
a safer condition. Max minimum 35 volt
should be there inside this battery
pack. But the operating voltage when it
comes for operating voltage 42 volt is
the maximum limit lower limit for this
battery pack. But 35 is considered as
the maximum. If it is go if this goes
below 35 we have to consider this entire
battery as dead. We cannot even
recharge. But in some s certain scenario
if parcel voltage is getting decreased
below three for example 2.7 or 2.8 then
also there are chances that we can
recharge. It is only the minimal
difference of voltage which is getting
reduced right but for this condition
that is considered the minimum thing.
Now for the age it is 76
divided by 4h. What is the answer that
we'll get?
It is 19 P.
19.2B.
We we should consider this as 19P,
right? Yes. So 19 P is the consideration [snorts]
[snorts] 19.2P
19.2P
in the sense 19p and the voltages of
thing 19 into 14. What is the total
Series into par gives us 2
2
6 cells.
Practical applications.
You will get to know the exact
difference about the
calculation right theoretically calculation.
calculation.
Now one example why we took multiple
example because of when it comes for the
actual practical scenario the things
will get deferred right now this says
that this is a 4 kilow battery pack
right try to multiply with the nominal nominal
whether this 4 kilowatt is correct or not.
not.
Just check with the age. Note down the
Now the AH says that the H is 76.8 ah.
Right. And the nominal voltage. Get the
nominal voltage of this battery pack and
>> What is the total number of kilowatt?
it says it is
This is what is mentioned here.
pack energy is 3.97497
kilowatt hour. They have rounded it off
to 4 kW. Right? Now that we have got to
know the battery pack capacity, this is
having 266 cells and we have our two
terminal output. Which are the two
terminal output which we have? We have
our negative output and we have our
positive output. Right? This is our
positive output. This is our negative
output, right? Can you see this negative
wire here?
We have our negative output and we have
our positive output. These two are the
output which we are which is coming out
from the battery pack covered with the
BMS thing. Now what we have this one
here we have our CAN communication wires
from the BMS. We have our CAN
communication wires integrated in the
harness. Now if we follow this harness
where this harness is going.
Now this harness will directly come to
what is this called as?
In the morning session hope we discussed
on this one. What is this equipment
This is the VCU. What is VCU? Everyone
type the full form of VCU. What is VCU? [snorts]
It is vehicle control
unit. Right now we will try to turn this
Now we will try to turn this setup come on.
Now that the setup is completely on,
what are the components which we have
used in this one?
We have our battery pack here.
Right? From the battery pack, the power
is going to see from the battery pack
the power is going to where have we
connected the power? To the MCU, right?
Power from the
battery pack is directly going to
what is this component called as MCU.
What is MCU? Motor control unit. Right?
Motor control unit. There is one more
wire parallely connected for here. This
is for the charging system. You can see
this. Which type of socket is this?
Can anyone tell which type of socket is this?
>> [clears throat] [snorts]
[snorts]
Which type of socket is this?
[sighs and gasps]
This is type six. Ola. In Ola. Type six
socket is used. Right. Type six. We have
the charging also connected to the MCU
there. Now what we will do is even this
VCU there are few wires which is coming
out. This is for the motor. The three
main wires the gauged wire are coming
from the MCU. The wires are connected to
our motor. Right from the MCU you can
just check from the MCU. We have our
wires connected to our motor here.
Right? And we have other
connecting wires also which are
connected to our
harness. Here we have our MCU. From the
MCU the wire output which has come, it
is integrated to our harness. And here
we also have this other wires.
From where this wire is coming from?
Just observe and let me know from where
from where this motors are this wires
are coming from. This wire from where is
it coming and which type of wire it
could be from the entire theoretical
session which we have learned this we
had given lot of pressure and one entire
session was given on this itself. Right?
We had this socket coming from the
motor which is integrated to the harness
again which is coming for the MCU. For
what purpose we will use this wire here
we have our three power wires and other
wire also the other respective color
wires. What for what purpose we use that?
that?
Yes. Hall sensors
wires. Those are the hall sensors while
Right? We have our motor here. From the
motor, the hall sensor wires are
connected to the harness. From the
[snorts] harness, it is getting
connected to the
MCU there. This is how the connectivity
has been done here. Right? Now, let us
try to run this setup. And
And [clears throat]
[clears throat]
the first step which we do is we turn on
We have the vehicle is in on position. Now
Now
once we unlock the vehicle have to press
the brake. See now that we once we press
the brake try to press the brake. Once
we press the brake the tail the tail
light is getting ignited there. The
regenerative braking thing which we had
learned right the regenerative braking
system whenever we press the brake
the tail light is getting ignited. How
is this getting done? Because we have a
sensor switch which is integrated to the
brake. Here for the brake we have a
switch integrated whenever we press the
brake. See whenever we press the brake
you can observe here this moment
this pin here. Whenever we press the
brake there is a switch which is coming
out here and going in. Right. No. So
whenever we press the brake
tail light will
turn on. Right. Now we will turn on the
vehicle. We have to press the brake and
we will turn. Now that we have turned on
the vehicle, we can see that the
Now let us try to accelerate the vehicle.
Right.
How is the power transmission getting
done? How is the power transmission
Now the power from the battery pack
power is coming from the battery pack
and going to the
V MCU but MCU from which the input is
getting based on the throttle response
here. See we have our throttle here blensor
again which is integrated to our
harness. This throttle based on the
throttle response the speed will be
varying. [laughter] Right? This MCU
which we have based on the throttle
input we have our thing. Now
my simple question is now the motor is
in ideal condition. What will be the
resistance of this throttle?
What is the resistance value of this
one? Whether it will be maximum or minimum.
>> [clears throat] [snorts]
[snorts]
>> It will be obviously maximum because the
resistance is maximum in this throttle
now. So the current flow from the
battery pack to motor is zero because
the current flow is zero. The speed is
also zero. Now what we will do is we
will gradually
decrease the resistance of the throttle.
We will gradually decrease the speed,
decrease the throttle resistance. At
that condition, obviously the current
when the resistance is getting
decreased, the current flow is getting
increased and
motor speed also. Vice versa, it is getting
getting
speeded up. Right? This is how the
entire setup will work. Right? The
integration everyone are clear even in
the theoretical session we have learned
from the battery pack the power goes to
MCU from [snorts] the MCU to the motor
and the motor MCU power flow will be
based on the throttle response and now
we had also verified in yesterday's
Now we had also learned about the
regenerative braking that now if I throttle
throttle
if I throttle obviously the power the
motor is consuming at this condition if
I apply brake what will happen. So shall
we test that if I apply the brake will
the motor stop? Let us check whether
this motor will stop or not. Shall we
Yes. Now you can observe the brake there.
Once the brake release the brake once
he's just throttle now the the thingy we
are doing is we are just throttling it.
Now the motor is running. Once we hold
the brake, hold the brake
automatically. Even he has not released
the throttle but the motor has stopped.
What this MCU had done? Now you can see
the tail light position also. What is
the taillight position? Brake.
Hold the brake.
You can check the tail light position.
The bright and the off condition of the
entire tail light. How the entire tail
light is working. Right now based on the
brake sensor, our motor is also
responding. Whatever we have learned,
whatever we have learned, have we
and the regenerative the practical problem.
But the same time if I press the brake
this motor what will happen for this motor.
Obviously it will get
overloaded right it will get overloaded.
To protect that we have our brake sensor
there where the throttle position will
be the same. If you press the brake
automatically the motor power will be
cut down by the MCU. So even we have
verified that. Now there is some
instrument here. What is this instrument
now? Hope everyone can see the speed of
the motor. This display it is indicating
the speed. How is this indicating the
speed? How is this indicating the speed?
Based on the
motor hall sensor position. Right? Now,
for example, if I want this motor to be
rotated, if I want my motor to be
rotated at one particular rotation, this
MCU knows how many times the MOSFET has
to be switched, right? How many times
the MOSFET has to be switched? That MCU
knows the data based on the MCU based on
the MOSFET switching based on the number
of MOSFET switching the entire speed of
the vehicle will be indicated. How the
speed will be indicated?
Based on the number of times the MOSFET
has been switched.
Right? Based on the number of times the
MOSFET is switched, the speed is
rotated. Right? [laughter] Now for this one,
one,
we have understood the entire
connection. This entire setup is for a
diagnostic setup
where we have our
>> We will try to identify each and
vehicle. Right now the first part what
is this? Which is this battery? Which is
This is the battery pack. Yes. Now,
Yes, this is MCU motor control unit.
What is this component?
I want which type of component also
Yes, this is a mid drive motor. Right.
Next we have our
[cough]
This is our
throttle. Exactly. Right. Next, what is
>> This is the VCU. Right. Next, which is
the component which we have? We What is this?
display. Exactly. This is the display.
Right. Now, can we identify what part is this?
>> [snorts]
>> This is a indicator. Now I will try to
blowing right now. I will now I have
turned on the right one. I'll try to
left indicator right. Yes. Now,
Headlight. [laughter]
Yes, most of you are capable to answer
that one. Now this what is this component?
[snorts]
We have our horn also integrated. Right
what is this component.
Whenever we press the brake, we have our
brake light which is coming. What do we
call this as? We call this as the tail
light, right? We call this as tail light
or rear brake light, right? We call this
as tail light. What does this consist
of? This consist of the brake light.
Whenever we press the brake, the brake
light will be there and the indicators.
Right indicator
and the left indicators, right? We call
this as the [snorts] tail light. And we
have our charging socket
which is used. Then this is the
component that which we have left out
Right? Now the final component which is
left out is this one. This one it is
difficult to identify in this one. I'll
be showing you a different example. Try to
part. Try to identify part the part with the
rating which is mentioned on the device.
device.
Just read the reading what is mentioned
See one thing it is very clear without
the BMS we will not take the output of
the battery pack. BMS will always be
integrated inside the vehicle itself
that we will not be using the BMS as a
external part of the battery pack. BMS
will be directly integrated to the
vehicle itself or to the battery itself
inside the battery pack. Now just try to
Yes. See it is very simple. The reading
which this says is input it as 48 to 72
volt. Whatever input we give from 48
volt to 72 volt. This will convert that
48 volt or 72 volt. Any voltage between
that to 12 volt. Right? So what is this
basically doing? This is converting the
any 48 to 72 volt into
12 volt. Basically we have we learned
about this device. What is this device
called as
DCDC converter right?
Chopper. We can we can name this as the
chopper or the converter or what is the
other name which we can give
converter. chopper [snorts]
because basically the input is also DC,
output is also DC. We have our
three wire system coming out.
We have our three- wire system. If you
can remember, if you can remember the
circuit which we had drawn drawn, what
was the circuit that we had drawn? [snorts]
[snorts]
which was a circuit that we had drawn
that this positive wire will be directly
connected to the battery pack. Negative
is common for both 12 volt and 60 volt.
Right? Buck converter. Yes, we have our
buck converter. So with all of this
component which we have learned from
past two weeks, this is how the entire
component which will be there. Now in
this entire thing what is missing? The
main thing which we are missing is with
our chassis right? We have our chassis
missing. Once we remove all these
equipments once we remove all these
equipments and if we integrate that to
one of the vehicle
if we integrate that to one of our
vehicle this is how our entire vehicle
will look like. Right? We have our
headlight placed here. We have our VCU
placed here, right? We have our VCU
placed and we have our harness. We have
our harness. Now the harness is getting
connected to our
each and every part of the vehicle
[laughter]
Next we have our meas this part. [snorts]
We have our MCU. [snorts]
[snorts]
We have our MCUs here
and the motor mounted here and the belt
driven system and the charging system.
Right. This is the charging socket where
Now that we have seen a mid drive setup,
we will also try to see a hub drive setup.
We have our charges. Let us try how the
male and female
>> here. Which type of setup we have [snorts]
[snorts]
in this? Which type of setup do we have?
Yes. Basically, this is a hub drive
setup. We have our hub drive mounted
here. There is no additional chain or
belt which has to be driven there for
additional movement. This entire motor
will rotate and the vehicle will move
forward. Right? This is what we have.
This is a TVS IQ. This is our TVS I cube setup.
setup.
When you come for the offline session,
you will be tearing down the entire
vehicle in the same situation and you
will be accessing what are the
components, how is this integration done,
done,
everything that will be a hands-on
thing. Right? We have our MCU mounted
here. We have our battery pack.
Different types of battery packs are
there. Now with this thing we will try
to see [clears throat] different types
of MCU. Which are the different types of
MCU that we have. We have based on the
current rating we have different types
of MCUs. We will be seeing which which
are the types of MCU. We do we have
based on the current rating right?
Voltage rating depend based on the
voltage we have different types of rating.
In Ola also we have the hub drive. In
different situation vehicles we have
both hub drive and mid drive in Ola. But
most of the vehicles which are on road
of Ola is of mid drive itself. Right.
This one this vehicle is of a hub drive.
This is also Ola. This you can see this
this is also a Ola vehicle battery pack.
This entire thing
this is a hub drive setup. Right. This
Yes, obviously when it comes for the
efficiency part, the efficiency is more
in the mid motor because we have
additional drive system there to enhance
the performance and the major thing the
what is the major advantage in hub drive
that it is easy to install and maintenancefree.
maintenancefree.
But when it comes for mid drive motor,
[snorts] when it comes for a mid drive
motor, the additional maintain cost will
be there to have the chain ray or the belt
Which one is costlier, hard drive or mid
drive? [snorts]
Probably the mid drive is costlier
because the motor power and the
drive system is completely different
compared to an hub motor. The thing is we
we
based on our requirement we can choose
the hard drive or the meter. But when it
comes for the efficiency and the usage
mid drive motor is always suggested
because of its performance and additional
additional
drive system.
We can have a Q question and answer
session. You have any doubts?
If you have any doubts you can let me
know. If you want any of the topic which
has to be repeated we will look into
Why some condition battery catches fire?
See in some situations when it comes for
the battery pack
now everyone got to know when we were
trying to calculate the parallel and the
we got to know that in the example when
we were seeing the example I'll just
[snorts] notes will be sending it soon
because see notes if I have sent the
notes before understand ending the
entire session the main thing is you
would be get confused on the formulas
what is yes P that you would got but the
entire combination how to select the
charger when you have the knowledge of
entire basics if you have notes. If you
go through the notes that will be
sufficient by this weekend, by tomorrow
evening the notes will be shared to you
all. Right? [snorts]
That one will be there. Now the question
which was asked that why usually the
batteries get fired. The major thing is
when the BMS fails, right? When the BMS
fails, obviously there are chances that
it might get overcharged or over
discharged and at the condition of
imbalance. When there is an imbalance in
the battery pack, for example, we have a
14S battery pack. Now imagine that we
have 14 number of series in the battery
pack. For example, the 10th series has
been damaged
due to some internal chemical issues.
The 10th series has damaged. Even though
at the series is damaged, if you try to
pass the power through it, obviously
that will convert that energy into heat
and it will try to explode, right? The
main thing is the imbalance the 0.009
the efficiency which we saw right that
is like the highest safety standards
which has to be considered.
Okay. Next, do you have any type of
questions which has to be asked
from the from Monday from 16th of
February, we have our offline sessions
starting at Nagaravi and Belgavi.
[snorts] Why especially Ola scooters?
See that especially Ola scooters is not
a scale. It is all about the social
media hype. The only major concern is
every month Ola scooters
sell an around 30,000 to 25,000
vehicles. If you take 1% of the issue
also, you'll get a issue of
approximately 300 to 200 vehicles. If
you take 1% of the total sold vehicles
also issue will come to 300 vehicles,
right? But the only social media hype
that it is having is only Ola. Even
every vehicle the Chinese category even
the a even the cha all of the vehicle
they have this issues right it is not
only Ola because only Ola is seen because
because
the sold
is in scale the number of vehicle which
is sold it is in scale that is the
ABS system the main thing is AB ABS when
it comes for ABS still the techn ABS
technology is not new but the
integration of ABS for the EV is new
right so there are chances that most of
the time it won't fail the ABS system
right but now in most of the two-heer
concept they're introducing it even Ola
is the first brand to introduce that ABS
EV also have reverse mean IC engineer
that is for gear systems right now when
it comes for reverse option only thing
what we have to do
we have to switch the polarity now if
now if you imagine the motor operation
thing the north polarity to the south
polarity thing just inverse it inverse
the current flow direction obviously the
motor will start to rotate so there is
no need of any other mechanical
factors which has to be added to make
the vehicle to run in reverse motor can
automatically run
switching the polarity yes switching the
polarity we can turn make the vehicle
rotate [clears throat]
now we will just see which are the types
of controller we have in the morning
session. We saw different types of
MC uh BMS. We saw different types of
BMS. Now we will try to understand the
basics of the MCU. Right now we have a
We have a MCU with us. Just try to read
>> What is the reading that it says? This
says the working voltage is of DC 60
volt. Under voltage is 51.5 volt. Right?
And what is the current limitation which
what is the current limitation? [snorts]
We have the current limitation of [snorts]
35 amps. Right? This is a 35 amps
controller. And this is also having some
other technical specification called as
face angle. What is the face angle?
What is the face angle representing?
it is having 120 amps [clears throat]
as the face angle. Right? It is having
[clears throat] face angle.
Now what is this 120°?
What is this 120°? [snorts]
The entire when it comes for the motor,
we have the motor in a 360° way. How
many windings are there inside this?
How many windings are there in this? We
have three windings, right? If we divide
the entire
if we have the if we divide the entire
360° of the motor with three windings
what will be the angle at each angle
what will be the face angle?
What is the total degree? We have a 360°
motor in 360° we have three windings.
360 divided by 3 is 120. Right?
Got it? This controller which we are
seeing here this controller which we are
seeing is here here is used for three winding
winding
controller. Now we have our positive and
negative. We have our positive and
negative here
right from input from the pattern pack.
And we have our yellow, green, blue the
output for the motor. And we have our
all sensor wires here. And these are for
throttle, brake sensor and the
regenerative headlight, horn thing.
These are all the pins which are
utilized right for the display
instrumentation. It can be for the speed
switching we have utilized. So this is a
very basic controller which we'll be
using in the Chinese category. Now we
We have a next type of our controller.
Can you just read the rating which is
mentioned on the controller?
Technical specification is mentioned above.
The technical specification
This says this is a 72 volt. Operating
voltage is 72 volt and maximum rated
current is 55 amps. Right? And obviously
the under voltage is 60 volt. Can
everyone verify whether this under voltage is correct or not?
Verify the under voltage. This is for the nor nominal voltage.
the nor nominal voltage. >> [snorts]
>> [snorts] >> What is the nominal voltage under cutff
>> What is the nominal voltage under cutff voltage for a 72 volt battery pack?
voltage for a 72 volt battery pack? Phase angle is
Phase angle is 120°.
120°. Obviously, this is also for a three-
Obviously, this is also for a three- winding
whether this 60 voltage is correct. Now we have the nominal voltage of 72
Now we have the nominal voltage of 72 volt. Here we have our nominal voltage
volt. Here we have our nominal voltage of 72 volt and
[snorts] the under cutff voltage is 60 volt.
the under cutff voltage is 60 volt. Right? Even in this we have the similar
Right? Even in this we have the similar we have our battery positive we have our
we have our battery positive we have our battery negative and we have our three
windings output the yellow green blue and again we have our hall sensor wires
and again we have our hall sensor wires and the connecting
and the connecting parts right this is also one of the
parts right this is also one of the thing now the comparison between these
thing now the comparison between these two controllers are if we compare these
two controllers are if we compare these two controller what is the difference.
two controller what is the difference. What is the difference that we have in
What is the difference that we have in both of this controller?
both of this controller? [snorts]
Yes. Obviously this is a ampere is a 60 volt controller. This is a 72 volt
volt controller. This is a 72 volt controller. Even the current rating of
controller. Even the current rating of this controller is much higher. Right.
this controller is much higher. Right. This is a 55 amps controller. This is a
This is a 55 amps controller. This is a 35 amps controller.
35 amps controller. Operating voltage is completely
Operating voltage is completely different. Right [snorts] now we have
different. Right [snorts] now we have the
next type of controller wherein we don't have any of the data specification which
have any of the data specification which is matched which is told on this one.
is matched which is told on this one. Right? There is no
Right? There is no technical data which is mentioned on
technical data which is mentioned on this one.
this one. Right? Only thing there is some serial
Right? Only thing there is some serial number
number which is mentioned on this battery this
which is mentioned on this battery this controller.
controller. Can we try to identify the rating of
Can we try to identify the rating of this controller?
this controller? Can we identify this controller voltage
Can we identify this controller voltage by reading the sequence?
So this says basically this is a 72vt 80 amps controller right? This is a 72vt 80
amps controller right? This is a 72vt 80 amps controller
and the color coding is mentioned. This is for the blue winding. This is for the
is for the blue winding. This is for the green winding. This is for the yellow
green winding. This is for the yellow winding. And we have our battery
winding. And we have our battery positive here. And we have our battery
positive here. And we have our battery negative.
negative. Right. This is what we have for our
Right. This is what we have for our controller. Now
controller. Now [snorts]
we have the [clears throat] [panting]
next type of MCU wherein [laughter]
[laughter] this is a
this is a branded control. Can you just read which
branded control. Can you just read which is which brand controller is this?
This is a Bajach chet controller. Right. We have [snorts] our battery positive
We have [snorts] our battery positive terminal here. We have our battery
terminal here. We have our battery negative to be connected. And we have
negative to be connected. And we have our
our face colors which are mentioned here.
face colors which are mentioned here. Right? Face color. This is the Bajage
Right? Face color. This is the Bajage controller.
next type of controller which is there. Just try to read the technical data.
This is this is a 72 volt 35 amps controller. Right? This is a 30 72vt 35
controller. Right? This is a 30 72vt 35 amps controller.
amps controller. And we have our all the terminals which
And we have our all the terminals which are mentioned. We have our negative of
are mentioned. We have our negative of the battery pack and we have our
the battery pack and we have our positive of the battery pack. And we
positive of the battery pack. And we have our UVW. What is UVW? Basically UVW
have our UVW. What is UVW? Basically UVW is the
connections for our phase windings. Based on the previous controllers, we
Based on the previous controllers, we had our yellow, green, blue. Right? So
had our yellow, green, blue. Right? So always the sequence comes for
always the sequence comes for UVW.
UVW. UVW is the sequence wherein yellow,
UVW is the sequence wherein yellow, green, blue is the sequence. Yellow is
green, blue is the sequence. Yellow is represented by U green and blue these
represented by U green and blue these are the sequence right always most of
are the sequence right always most of the majority time green will be the
the majority time green will be the middle part
[snorts] [clears throat]
[clears throat] now we have other type of controller
now we have other type of controller also
This is one of a Indian manufactured controller. This is a famous company for
controller. This is a famous company for manufacturing the controller. You can
manufacturing the controller. You can just try googling about this company.
just try googling about this company. You can just take a screenshot of this
You can just take a screenshot of this company name
company name Sterling GTech Mobility. This is one of
Sterling GTech Mobility. This is one of the leading company to manufacture the
the leading company to manufacture the controller. Right. For this controller,
controller. Right. For this controller, this doesn't have any of the
this doesn't have any of the data which is mentioned on the
data which is mentioned on the controller.
controller. If you want to know the details about
If you want to know the details about this one, we need to have the data
this one, we need to have the data sheet. Even this controller will get the
sheet. Even this controller will get the data sheet based on this data sheet
data sheet based on this data sheet itself.
The entire operation the pin outs what are these pin outs for for what we
are these pin outs for for what we should connect this pin and why this
should connect this pin and why this connection is there. We have our battery
connection is there. We have our battery positive and negative and the
positive and negative and the three-phase 20ies. So in all of these
three-phase 20ies. So in all of these controllers, all of this type of
controllers, all of this type of controllers which we have seen, we saw
controllers which we have seen, we saw that these are the two common terminals,
that these are the two common terminals, positive and negative of the battery
positive and negative of the battery pack and three windings, right? Yellow
pack and three windings, right? Yellow controller. This is the common terminals
controller. This is the common terminals which we saw.
which we saw. This is the common type of controllers
This is the common type of controllers which we saw,
right? For students who are coming offline,
For students who are coming offline, this session will be my last online
this session will be my last online session. I'll be completely taking the
session. I'll be completely taking the offline classes. For online, it will be
offline classes. For online, it will be related the design and the math lab that
related the design and the math lab that will be conducted in the online
will be conducted in the online sessions. Right? For online students who
sessions. Right? For online students who are taking complete online classes,
are taking complete online classes, [cough]
[cough] different trainer will come. training
different trainer will come. training will be on the BMA on the design
will be on the BMA on the design structure design factors
structure design factors [clears throat] and the embedded system
[clears throat] and the embedded system right for offline who are coming for the
right for offline who are coming for the offline this will be a complete hands-on
offline this will be a complete hands-on I will be handling the
offline session right now whoever are coming for the
coming for the offline sessions
offline sessions now whoever are coming for the offline
now whoever are coming for the offline sessions I'll be there to guide you
sessions I'll be there to guide you about the
about the [sighs]
[sighs] complete working hands-on thing for the
complete working hands-on thing for the entire offline session online. There
entire offline session online. There will be another trainer training you
will be another trainer training you about the thing. Hope [snorts] everyone
about the thing. Hope [snorts] everyone has understood the basics.
Yes, take the projects offline. So ultimately see in visionistra ultimately
ultimately see in visionistra ultimately we want you students to learn and have a
we want you students to learn and have a very good output about the electric
very good output about the electric vehicle technology right so if you want
vehicle technology right so if you want you have to if you're planning to take
you have to if you're planning to take the online classes take it completely
the online classes take it completely online and when you you can come for the
online and when you you can come for the offline projects we'll be giving you the
offline projects we'll be giving you the different projects we will try to design
different projects we will try to design a new vehicle with the vehicle testing
a new vehicle with the vehicle testing setup we will try to set up a entire new
setup we will try to set up a entire new test setup for the vehicle. We will try
test setup for the vehicle. We will try to diagnose the setup, right? We will
to diagnose the setup, right? We will create a new diagnostic setup. We will
create a new diagnostic setup. We will be doing in the projects, right?
be doing in the projects, right? Projects, let us do it in the real world
Projects, let us do it in the real world application, offline project. So,
application, offline project. So, whatever we do, right?
whatever we do, right? That should be like the real world
That should be like the real world application product level, right? That
application product level, right? That is what we will be doing in the offline
is what we will be doing in the offline sessions, right? online session you will
sessions, right? online session you will also learn the different thing right
also learn the different thing right things will be different in online and
things will be different in online and offline
you'll be learning this right you have any doubts in the entire session
any doubts in the entire session conducted on the basics if you have any
conducted on the basics if you have any doubts in the entire session which is
doubts in the entire session which is conducted
>> [laughter] >> by mistake if you blast your battery
>> by mistake if you blast your battery packs. We'll be giving the non-working
packs. We'll be giving the non-working battery packs to all of you because all
battery packs to all of you because all of you are as freshers who are working
of you are as freshers who are working without experience. We'll be giving you
without experience. We'll be giving you the non-working cells itself so that you
the non-working cells itself so that you won't make any of the
won't make any of the damage to the asset.
Uh should we get the laptops that it would be better in the initial days
would be better in the initial days laptop is not recommended
laptop is not recommended but for after few days for designing it
but for after few days for designing it is better that you get
is better that you get the laptops right
now [snorts] for the internship diary you
[snorts] for the internship diary you can upload whatever we have learned we
can upload whatever we have learned we have seen you have learned about the
have seen you have learned about the different controllers which we have seen
different controllers which we have seen you will be having the same terminal the
you will be having the same terminal the positive negative and the windings and
positive negative and the windings and the structure the con the integration of
the structure the con the integration of the diagn setup the and entire vehicle
the diagn setup the and entire vehicle of mid drive and hub drive the
of mid drive and hub drive the integration of battery to the MCU that
integration of battery to the MCU that thing whichever you saw you can just
thing whichever you saw you can just upload for this one and for tomorrow's
upload for this one and for tomorrow's V2 diary
V2 diary you can upload the evening session and
you can upload the evening session and for today's you can upload the morning
for today's you can upload the morning session thing right so this is this was
session thing right so this is this was all about our basics
This was all about our entire basics which we have learned in the entire
which we have learned in the entire week. Right now if you have any doubts
week. Right now if you have any doubts you can contact me on the LinkedIn
you can contact me on the LinkedIn right. You can just Google my battery
right. You can just Google my battery tech.
tech. My LinkedIn profile will be available.
My LinkedIn profile will be available. You can connect me through LinkedIn. If
You can connect me through LinkedIn. If you have any doubts, if you have
you have any doubts, if you have anything which you have to learn in
anything which you have to learn in Paris, you can directly
Paris, you can directly contact me through LinkedIn.
contact me through LinkedIn. Right. [snorts] Thank you everyone. Hope
Right. [snorts] Thank you everyone. Hope everyone have understood the basics.
everyone have understood the basics. Right.
Right. Hello basic. I want feedback from
Hello basic. I want feedback from everyone. The effort which we have put
everyone. The effort which we have put to learn the entire basic. Hope everyone
to learn the entire basic. Hope everyone has learned the basic.
Yes, thank you for your wonderful feedback.
feedback. The effort whatever we are putting the
The effort whatever we are putting the effort whatever you are putting it has
effort whatever you are putting it has to be two ways to achieve the ultimate
to be two ways to achieve the ultimate goal. Right? We are pleased
goal. Right? We are pleased to welcome everyone to the offline
to welcome everyone to the offline session at Nagbi and at VU Pagabi. We'll
session at Nagbi and at VU Pagabi. We'll be waiting for everyone whoever are
be waiting for everyone whoever are coming for offline, we'll meet you in
coming for offline, we'll meet you in the offline. Right? You can share me
the offline. Right? You can share me your feedback. You can share me your
your feedback. You can share me your genuine feedback in LinkedIn for me.
genuine feedback in LinkedIn for me. Right? Whoever are giving the feedback
Right? Whoever are giving the feedback on LinkedIn for me you'll be directly
on LinkedIn for me you'll be directly getting the
getting the presentation and one more document will
presentation and one more document will also be shared for you in the LinkedIn
also be shared for you in the LinkedIn itself whoever are giving the complete
itself whoever are giving the complete feedback the true feedback whatever you
feedback the true feedback whatever you have felt whatever you have learned
have felt whatever you have learned about my content about the speed how
about my content about the speed how whether we have completed all the
whether we have completed all the session too quick or the sessions were
session too quick or the sessions were too fast or too slow whether we were
too fast or too slow whether we were dragging
dragging If you give your genuine feedback, you
If you give your genuine feedback, you will be receiving a
will be receiving a document
in the LinkedIn profile itself. Right? So you can just Google my battery tech.
So you can just Google my battery tech. You'll be getting the complete
You'll be getting the complete access for my
access for my LinkedIn profile. Right? Thank you
LinkedIn profile. Right? Thank you everyone. Bye. Hope you have learned
everyone. Bye. Hope you have learned enjoyed learning the entire basic
enjoyed learning the entire basic sessions. Right? Thank you everyone.
sessions. Right? Thank you everyone. We'll meet in the offline sessions.
We'll meet in the offline sessions. Thank you.
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