Tesla's Battery Tech Explained: Part 2 - The Module 

Just as interesting as the first video in the series... Looking forward to part 3 :) It has been some time since part 1, but it has been worth the wait. This channel is underrated!

I was looking your channel every week to check for this video . I honestly thought something terrible happened to you and thats why you couldn't post new one . Good to know you are back

Since I saw your last video I must tell you that this one was highly anticipated.

Very educational. I'm sure this took a lot of time to put together. Thanks very much!

Thanks for the great video. Very well researched and explained. Subscribed and looking forward to more such videos.

i was confused as to how tesla was so effective at pulling heat from the batteries and this video explained it perfectly! well done! thanks

Excellent videos

Fantastic once again! Thanks one more time.

Thank you so much it’s so helpful

Thanks. Great video.

First, all of the videos in the series are phenomenal. They are each very informative and very interesting. I was wondering if you could explain what you mean when you say, “they join the positive and the negative terminals on the same end of the cell, rather than on opposing ends” . Again, great series/channel overall.

Thanks for the great work!! This wavi cooling channel however will increase the pressure of coolant pump,so how they managed to connect wavy channel to the pack level?

There are two versions of the S and X battery pack. The newer version, which has a set of two thinner coolant tubes, provides more space per-module for batteries and gives Tesla the ability to provide the 100kWh capacity.

Awesome video, thanks for sharing. Do you only refer to the P100D tho? Thought the cooling would look different and more like the model 3 design with 2 pipes instead of one.

Cell - module - the pack. I would suggest you make a fourth video about the future of these. What's the current stuff that's in development so far that would eventually replace these? . Or maybe, are these all we got for the foreseeable future?.

Thanks for awesome video I have one question how they have connected BMS, 6s means they have made connections to only end of the connecting strip, if we use Orion bms do we need to connect each cell individually or connecting stip end connection is suffice purpose.

Hey there, great video! Do you suppose it would be safe to mount a model S module in a vertical fashion, on its side? See no problem with cooling, but mechanical structure is not elaborated on in your video...

No, the 85 and 90 have always had 16 modules. 7 on each side and 2 in front. They improved the chemistry on the cells to gain the 5kwh and then used the more compact twin cooling system to create the 100 pack with more cells.

excellent video, you explain things very well, could you please explain "nominal" in layman terms?

Do you know what the temperature difference between the coolant and the cell surface on the opposite side of the cell is for a discharge rate of 2C?

two very important questions: 1)management of failed batteries in the module, generally I find proper bms is most important topic in Li batteries family, and I am always looking for other people opinion on this subject as I don't find myself still comfortable in this topic. 2) fire resistance of tesla module especially comparing to the standard multi-pouch packages found in other EVs.

Hi EV tech, thanks for the explanation. Do you happen to know if there is any manufacturing process information about tesla e battery?

Can i get a detailed information on how are battery pack modules made for prismatic cells and a little more information on busbar selection

Can we change the series and parallel connection of the module, suppose series connection is 6 and and we want to make it 13p by reducing the parallel connection, is it possible on this pack

Would you please elaborate more on the white potting material surrounding the batteries? What is its function?

I've heard that the bus plates are aluminum (rather than nickel-plated copper). Can you find out if it is 6101 Al?

Can you make a comparison of thermal management system? How the battery is heated and cooled, linked to the AC, radiator system etc. Jaguar makes a big deal about their system. I wonder which is better

On the Tesla S 5.2kWh battery pack there is a pcb with a 10 pin plug socket. What is this socket for ? We have a Tesla battery which we want to use with a solar panel array, and maybe this socket has some significance?

Good video. A question. The cells that are at the output end of the cooling tube, would on an average get lesser cooling, as compared to those on the near end, when the coolant is just entering and hence colder. Will this not lead imbalance in cells within the module over long term? Is there a way to take care of this which Tesla has figured out ?

Does lithium batteries needs ventilation system? What can be done to improve safety from battery explode?

What is the excatly the thermal interface material ? what you covered the parts. Thank you

My biggest issue was how does the coolant interact with the cells,...got it! Thank you

I would like to know if it is possible to use a bms on the 6s batteries. Is tesla balancing this Battery pack on 3.7 Volts or 25 volts?

Does the colling channel inlet pipe has any orifice in it?

Does changing 6s86p will matter in kWh?

Could I use snapshots from this video in my mechanichal engineering thesis regarding battery systems?

How the cooling pipe is inserted between cell. As cooling pipe doesn't seems rigid one.

There is a mistake at 0:40 - "First generation battery packs 85 an 90 kWh consisted of 15 modules". That's wrong. It was 16 modules: 16s 6s74p. 3:19 - Powerpack/Powerwall *Version 1* shared the 18650 cells. Only Powerpack/Powerwall *Version 2* contains the 21700 cells of NMC type. 6:29 - The stated 2.5V minimum voltage is a very low discharge voltage. Typically, this is rather 2,8-3 Volts to reduce degradation.

Anyone know why don’t Tesla use 2170 in the newly refreshed Model S & X?

Can you please show the wire bond on both side of each cell how it is done & If possible please tell me specification of wire bonds.?

Im looking for ev bms kit, any company sell bms?

👍

What’s this batteries operation temperature? And on winter time the batteries temperature goes down when the car standing on driveway or the bms maintaining the batteries temperature even when the car not in use?

Hey ...can anybody show how the cells in a module are connected in series and parallel using wire binds and busbars. What is a wire bond? Where to get them?

What doesn't make sense to me is the refrigerant is applied at the beginning of the module which leaves those batteries at the end of the module with no thermal gradient to deposit their heat. There's probably a better design out there.

Volume?

Can you explain the reasonS why a Tesla battery might catch on fire? I have seen on the internet different Tesla models catch on fire when: 1. just being parked. 2. parked and plugged in for charging. 3. driving down the road. 4. and after a crash. Let's assume a 2022 model 3, hits a dip and the bottom of the car hits the roadway, the car crashes by striking a 8 inch curb, the car hit a tree too, 3 minutes later it explodes into a ball of fire. Q1: can i hire you to help me develop theories of 'why' the 2170 design had some faults and why they catch on fire. Q2: does the 4680 battery fix any problems with the 2170 catching fire?

85 and 90 have 16 modules!

Video 3 isn't out yet? I guess I will brave the patents instead.

so 16 modules new pack 25k so each 1563$ used sell for ~1450 on ebay, worth it? how could i use it as 12v instead of 24v, thats the video am looking for...

what happened with the sound? part 1 was dope, part 2 cant hear anything

need to turn up the volume

1:28 where can I buy that cooling pipe?

Can barely here you. Turn up the volume please.

Each 21700 cell is 4.85 Ah but why tesla uisng only 3.4 Ah.. its only 70% of actual. So, with number of charge and discharge cycles .. will tesla maintains same 70% through out the life ..life starts decreasing from 70% to 80% of 70%..

You forgot how much it weights .

How the Tesla calculated temperature of cell

Don’t ever Center bulleted text. Looks horrible. Just left align it, or hide the bullets.

When EV batteries need to be replaced. The old batteries have to be disassembled to be recycled .. that is going to create an industry because it takes technicians hours to carefully disassemble each battery..There will be millions of them

Disculpa pero estos es más que sinceros o claros digamos estando en nuestros planes abandonarme de esta manera es de técnicos o técnica despojo and or other membership Just loque nos da vida es amor simedas desconfianza es traicion

74 cells in parallel: you know its impossible to distinguish between these cells whilst they are connected in parallel.........therefore there is NO cell level monitoring in any ev's battery pack. Sad but true.........when will this be solved? Look at it this way: 6S 74P pack.....thats 444 cells 74 cells in parallel are basically monitored as a single cell ( cannot distinguish between cells): so 74 out of 444 cells are monitored or 17% of the pack. The reality is less than 20% of a packs cells are being monitored is one way of looking at it. It very rarely this point is raised as a weakness in the electric vehicles, in fact its very rarely raised at all, most people continue to say that there is monitoring at an individual cell level.....which is not the case.

STUPID DESIGN