Engineering Masterpiece | Tesla Model S Plaid Battery Pack

Sandy & Ben dive into a few initial battery pack features in our introduction Tesla Model S Plaid battery episode.
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Outro:
Music from KZbin Audio Library [Aka YAL]
Music provided by RFM: • Video
#Tesla #battery #Plaid

[@shuriken4852]

Very interested in this break down, especially to see the motor, but I cannot wait for Munro to get their hands on the Model Y from Austin with the 2 mega castings, 4680 cells and structural pack.

[@davidbeppler3032]

Minds will be blown!

[@socrplar125]

Afaik, MachE had a structural pack

[@rogerstarkey5390]

@@socrplar125 And it's still overweight.

[@socrplar125]

@@rogerstarkey5390 sure. But that doesn't detract from the fact that it already exists and Munro has viewed it

[@GET2222]

@@socrplar125 their structural pack was not attached to two gigacastings. Basically 3 pieces compared to 300 pieces or more in the Mach-E. Comparing the Mach-E to the Y or S is a joke. You know that right?

[@mkashay]

Hi Sandy, I love how you let your employees do the talking and are encouraging and mentoring them rather than trying to control everything.

[@nononsenseBennett]

Sandy is, after all, a nice Canadian

[@milesshigh]

Yeah but it's a real shame that Ben doesn't know the difference between the totally different units of kW and kWh. Mildly annoying from non-tech people, but here, it's unforgivable. Am I being too harsh?

[@clariplayer]

As an ignorant observer, I admire you unbiased approach with the facts and not sucking up to anyone. Great respect to you and your organisation. 🇦🇺

[@brunoheggli2888]

"unbiasted"serious?He lives from being a Tesla Fanboy!

[@Dan-gd2rk]

"As an ignorant observer, I admire you unbiased approach with the facts and not sucking up to anyone" LOL, you seriously think this clown is objective? you're a complete dumbass dude.

[@opfreakx]

not unbiased. He said in previous videos he owns stock in tesla.

[@fincarosa]

@@opfreakx nope. He doesn't own Tesla stock.

[@L1VE3V1L]

Pretty unbiased. He shits on Tesla when they deserve it, usually in the build quality department, and says it to elons face.

[@SkyRiver1]

I watch most of the good non bogus Tesla channels, but Munro Live is like the icing on the cake. Cheers

[@theycallmeabe]

I know nothing of engineering, and very little about how automobiles work, but I really enjoy watching your videos. Keep up the good work gents!

[@johnpoldo8817]

As as an EE about Sandy’s age, I’m overwhelmingly impressed with Tesla’s engineering. Now I know what is under the seats in my new model S LR. It is much more complex than a simple battery and motor.

[@jamesvandamme7786]

Me too, I wanna see the schematic. Especially the inverter.

[@johnpoldo8817]

@@jamesvandamme7786 Gee, I’ve never heard of a car company sharing a schematic. Have you seen one?

[@jamesvandamme7786]

@@johnpoldo8817 That's why we need Sandy's crew to tear it down. Or send it to big Clive and he'll take it to bits. Actually, if I wanted to move back to Motown I'd do it but that ain't happening.

[@solosailorsv8065]

I spent the last two decades solving engineering challenges efficiently in "Tesla" style. Just to be shot down by managers, saying "WE don't do things THAT way, stop trying to change things". Retired and work on my own projects in Tesla style now !

[@louspinelli1745]

Munro Live, spreading the inside information that others can’t or don’t. Thank you for doing what we haven’t been able to ourselves.

[@sean9421]

I love this series, I wish more folks who are so quick to judge Tesla would appreciate the engineering inside these cars. Panel gaps are unacceptable but boy do they shine internally

[@rayoflight62]

These boards make a 3-phase stepped sinusoid into a pure sinusoid. As they have reduced the size and number of inductors, I believe they have increased the number of steps - basically, they increased the clock frequency of part of the system. This may have required faster MOSFET and lower ESR capacitors, but has increased the efficiency and reduced the weight of the boards.

[@viseerrdentsawl8494]

When you talk high-tech EE like that you attract all sorts of types. Audrey must love you. 😍

[@gforge9708]

Wouldnt IGBTs be used for the higher current? Or is it better to parallel and balance fast switching MOSFETs?

[@Resist4]

The amount of design and technology that goes into a Tesla (or any auto for that matter), is really mind blowing.

[@CodingMark1]

Great video! Love to see how Tesla is optimizing their chips for mass production while still making constant improvements. Very cool. Thanks!

[@MunroLive]

Couldn't agree more!

[@expediofuture3905]

Hey Mark!

[@cengeb]

Too many functions from one component means a failure affects too many things in the vehicle...these things will be unrepairable...discuss insurance costs for this stuff in an accident

[@cengeb]

Vw has 14 brands and shares lots of components with 10 million vehicles produced...tesla made 500 000 vehicles? So vw has even better purchasing clout

[@AMortalDefiant]

@@cengeb Keep in mind that Tesla made over $5B in net profit last year on only 936k sales (less than one tenth of VWAG's sales volume). The last full year of financials we have for VWAG shows them only netting $9.5B in profit. So, Tesla made 60% of the net profit on less than 10% of the sales volume. Clearly there is a lot more to it than the scale VWAG has (more like HAD, as ICE production decreases). Tesla is just an dramatically more efficient beast in every possible way. Also, pricing clout becomes somewhat irrelevant when one makes their parts in-house, rather than paying mark-ups to suppliers. I'm pretty certain Tesla spends less on the seats it makes than OEMs spend on the seats they buy from suppliers. Edit: It's also worth noting that Tesla's operating margin is literally DOUBLE what VWAG's is (15% vs. 7.5%), so all the numbers suggest the opposite of what you are claiming as far as costs are concerned.

[@fred993a]

Sandy and Ben - Thank you for a brilliant engineering analysis. I hope Jim Farley of FORD is watching closely!

[@bluetoad2668]

Yeah, Jim can probably have this sort of tech in their vehicles by about 2027

[@espencapable]

He doesnt know what to look for :P

[@markplott4820]

MUNRO Live - Sandy speaks softly , and carries a BIG stick........lol.

[@kkitzhaber]

Wow. The advances since my days as an electrical engineer in the later 90s.... Amazing!

[@vidznstuff1]

Wut? An L is still an L, a C is still a C, the math is the same.

[@mikumikuiyada]

@@vidznstuff1 not really. if ur an engineer in the 90's, its really like working in the stone age. you have no smartphone, no computers, no internet. basically everything is paper, and people still fight using stones on a sling shot

[@cathyk9197]

Shout out of appreciation to whomever wrote the light show accompaniment at the end of recent videos! Well done!

[@stephenbone4764]

I ALWAYS ENJOY YOUR TEAMS INSIGHTS ! TOP PEOPLE WHO LOVE WHAT THEY DO ! KNOWLEDGE IS POWER !!!

[@mikeselectricstuff]

All the filter components seem to have shrunk, so maybe they're running the OBC and DC/DC at a higher frequency and/or using frequency dithering to reduce the filter requirments.

[@SupremeRuleroftheWorld]

the better performance of the nichicon caps might also help in the total picture.

[@kevin42]

Man im so ready for them to switch to GaN transistors and bump the freq up to 1+ MHz. The freq increase and dramatically better transistor charactaristics should yeild a near 3x power density increase and or a massive efficiency bump. Or both to a lesser degree.

[@markplott4820]

Dont underestimate TESLA.

[@Phoen1x883]

Not surprised in the slightest to see you in the comments of this video, Mike. Would love to see an analysis from you if you can find one at a reasonable price (Munro probably isn't planning a deep dive on the level you usually do).

[@alanmay7929]

Engineerix has done a very detailed video on all those electronic components, sandy has absolutely no idea what he’s talking about tbh!

[@BreiteSeite]

Ben you did a good job!

[@harrisoncleaver4787]

Australians can work in the US on a very easy E3 visa that is pretty much a 2 double sided piece of paper saying your a real company hiring an Australian with a passport. No heavy requirements. I have used it myself and it’s very easy and quiet fast. It was set up as a lovely thing to encourage collaboration after we fought together in the war.

[@lyfandeth]

One hand in the pocket didn't last too long! Sandy, we don't wanna start calling you Sparkie!

[@vitalynazarov7748]

Thank you for those videos. They are a breath of fresh air for an engineer!

[@davidanalyst671]

they don't have loud EDM music, and explosions in between scenes too so its very watchable!!

[@randolphtorres4172]

THANKS4GIVING: Mica was used in old stove pilot light windows, old tv tubes, very resistant to high temperatures, it an insulator, a soft layered stone. I don’t think mica has been used much commercially for many years here in the US.

[@alanrickett2537]

Capacitors not made of it in USA ??

[@rebelaqua823]

Mica is still used as a microwave guide covers.... ;)

[@daniellyons3970]

Ben is a wealth of knowledge ….. really appreciate the work being done folks keep the videos coming. Haven’t been as excited since a tear down since you guys done the model Y.

[@MunroLive]

More to come!

[@sietuuba]

@@MunroLive Please tell him to not drop the hours from kWh when presenting and talking about battery capacity even though it's a mouthful and a common fault we're all guilty of sometimes! Kilowatts remain solely a measure of power and not pack energy...

[@alexanderkenway]

We need a more detailed dive into the electronics. Hope dedicated videos with experts are upcoming

[@alanmay7929]

Go watch engineerix on youtube

[@bluetoad2668]

He said that he's going to do that.

[@amimartian]

They have no experts in this area. Maybe if they invite someone from outside the company...

[@userscott]

@@amimartian you have clearly never read a Munro report. Download the I3 teardown. It includes everything from PIC logic to SMT component counts lol.

[@donkanis6141]

Sandy and Elon, THE two most important people in America and the world today.

[@alanmay7929]

Lol……. They are not, it’s the tousands of other who helped to develop that car

[@GET2222]

Tesla speed of innovation is unreal. Stunning.

[@Cloxxki]

Ahem. We are a decade on from the first Model S.

[@GET2222]

@@Cloxxki correct. The fastest fucking production car in the world. That is innovation at its finest and no one other than a $3.2 million Rimac is remotely close. Thanks for proving my point.

[@kantameena9668]

Loving the Plaid series

[@skittlez8943]

proud to say ive helped make these packs for model x/s :)

[@thexential7461]

High respect for Sandy for acknowledging that you don't necessarily need a degree to be an engineer.

[@logantang701]

Mica is used as isolation barrier to protect the battery pack when it come to TR. Mica can stand 1000℃ and it will not burn throuth when the cells are TR.

[@ivankuljis1780]

'MASTERPIECE'& '$YMPHONY' Both words used in describing Tesla in the last two MUNRO LIVE TEARDOWNS NO TEARS AND NOTHING PHONY HEAR!

[@johnturner7322]

Because of what you explore and find, if I was to purchase an BEV it just would have to be a Tesla! Their engineering is tops! Sure they have some fitment issues but their vehicles seems to be extremely sound.

[@kstaxman2]

Always amazed at how Tesla does even the smallest detail

[@alanmay7929]

Lol…..

[@eddiemoy]

85kwh battery pack is old, they have since introduced the 90 and 100 kwh battery packs on the previous generation Model S and X. They were called the 90D, P90DL, 100D, and P100DL.

[@davidglieder8862]

Yes and the 100 pack actually has more cells and higher capacity than the plaid pack.

[@Cloxxki]

@@davidglieder8862 Well noted. Would you have the Wh/kg for these latest cells please, also in relation to previous 100 packs?

[@arguanmodeth]

To compare the two models you have to buy them at the same time from the same factory. A year makes a big difference. Production lines are always changing and everyone is trying to suggest improvements in everything from the packaging used to deliver the parts to how to assemble the parts. You might notice that all the fasteners are star drive and mostly the same size, something all manufacturers should do. The engines might still be using separate resovers but they are looking to integrate them into the main windings and magnets since it takes a little change in wiring and software and eliminates 3 stations on the line. The best part is no part.

[@wiredwebmaster]

Another great video, thanks for sharing Sandy. PS: Hope you hire someone from Canada, as well, they really showed the world what's possible.

[@foam27]

like what?

[@rogerstarkey5390]

You know Sandy is from Canada?

[@joetz1]

@@foam27 maybe he is talking about the protests happening over there

[@nas4apps]

Each year many Canadian Tesla drivers engage in Tesla winter-hardening testing .... ;) But there are also plenty of Norwegians on a similar track. Would assume that this is great feedback-country adding to regular winter-conditions tests.

[@xawastin]

Wow again You have all the best top notch engineers! Amazing

[@CausticLemons7]

"More charge in less weight." That's why we consumers like to hear!

[@ivankuljis1780]

Sandy throwing down 'The Gauntlet' to every car Manufacturer! PERIOD

[@justinhealey-htcohio3798]

Amazing Vids!!!! If I lived up in Michigan I would love to work for Monro! Learning all the juicy details about this amazing technology would be so interesting and fulfilling!!

[@Resist4]

The weather in Michigan would change your mind. Arctic in the winter and hot humid in the summer. I grew up there and would never move back.

[@devilsoffspring5519]

@@Resist4 Apparently a lot of the northern-most States are like living in Canada, here we have long, awful winters and the humidity in the summer sucks. Summers can be nice, but are much too short to be worth the aggravation of waiting all winter for them.

[@bradley3549]

@@Resist4 It's still worth it because it keeps most people away! Of course, Auburn Hills is practically tropical weather compared to where I live. I wouldn't mind moving that far south and I'd love to get to reverse engineer automobiles all day.

[@robertpsotka3525]

Start by spelling MUNRO correctly

[@KnowArt]

feels like the camera was more shaky in this episode and pointing to more random points. But could be my imagination. Thanks for the insights. great video as always

[@rwdplz1]

Backward compatibility would be a HUGE plus for Tesla, with all the component shortages, and wait times for service parts.

[@michaelcoghlan9124]

Thank you have a great week. Michael

[@jan-ludwig5216]

Smaller filter with fewer/smaller coils only come with an increase in switching frequency. Increase if "effective" switching frequency can be achieved by switching faster, using a multi-level or interleaved topology. Additional gate-channel isolation transformers as well as fuses will ultimately result in more semiconductors below the PCB. The additional semiconductors can then be used in parallel reduce losses and allow for higher switching frequency. Alternatively a multi-level or interleaved topology could be used to achieve a similar result.

[@amimartian]

Ever since Sandy became a Tesla shareholder - Tesla can do no bad. They even justified old cells, modules and compared this 100KWh battery with the original 85KWh one from 2016 and surprise surprise it’s better!

[@Cloxxki]

The new cells were never good for high C loads though. By lack of vast better chemistry with lower internal resistance, heat dissipation is still a huge factor. 18650 better than 2170. The overhead saved in 2170 is line 3% or so for energy density, but sure saves manufacturing cost.

[@lyfandeth]

Mica is a cheap natural "rock" which is not flammable and not combustible. Damned good barrier between high power and people.

[@Ethan-kr9bh]

Apparently, a lot of mica is sourced from India where it's mined by children as young as 4 and 5 years old. Of course, I only just learned about this from watching a youtube documentary specific to the mica used in makeup. I have no idea if industrial mica relies on the same source of child labor. Either way, I agree with Sandy, it would be better if we didn't need yet another unique mined resource for our EVs.

[@lyfandeth]

@@Ethan-kr9bh I suppose Tesla could use large sheets of the same synthetic sapphire used for watch crystals, and we could be sure ? it wasn't from child labor. Other than that, and the curious tan color not matching what mica usually is (i.e. clear stove-glass doors) I don't know of any material that has the same strengths. Maybe Sandy does. As for child labor, that's a whole other problem and a hugely questionable assumption to toss in here.

[@gerrycrisostomo6571]

That is correct. Mica is tough, does not melt or catch fire and is a good insulator even when it gets hot, while plastic melts easily and is very flammable when hot. I remember when I was a kid, my dad fixed an old electric clothes iron from the 1950s era and he showed me the mica that was used for insulation because it is much better and safer than asbestos. And that is also the reason why Tesla uses mica for the same purpose, as an electric and heat insulator.

[@Raylen_Fa-ield]

Beautiful! What you guys do is just beautiful!

[@henrykleyn3423]

These guys work well together.

[@johnnylee8194]

ben is little stiff on camera. exactly how brainy person should behave. its endearing :)

[@Stefan_Dahn]

Personalities of individuals are different, but "All are PRO at MUNRO!" 😁

[@sammiller6631]

There is no "should" in how a brainy person can act. Everyone is different.

[@foam27]

@@Stefan_Dahn I don't know abbout that when they are calling choke coils transformers :p

[@1flash3571]

@@foam27 Munro corrected himself after making a mistake.

[@foam27]

@@1flash3571 timestamp?

[@peterzerfass4609]

Apart from confusing kW with kWh...good video.

[@margarita8442]

mica is found in old toasters etc -- fire resistance

[@1091tube]

An incredible video, thank you for it... seriously helpful for the owner... and anyone interested in how things are made.

[@transendre1]

For future shows: how about details on conducting quality control ? How do designers and manufacturers test for robustness, safety, resiliency, stress, repeatability, ...etc.

[@ymcpa73]

You can't really get that info from a teardown. You can see that the packaging is tight. Tesla's issue with quality control usually involves things like panel gaps and seals. You rarely see people complain about the powertrain.

[@Ficon]

It’s a Tesla. They don’t. That’s why they are on their third recall this year, still broken heat pumps, now missing hardware in cars sold as FSD-capable. Chrysler made better cars in the 1980s.

[@JohnSmith-pn2vl]

@@Ficon wow, if thats true tesla has the least recalls of the entire industry, mercedes had 18 last december alone for example. of course they test everything and learn from the customer experiecne , there is no better way, no matter how much you test, the real test is the customer.

[@markplott4820]

see - Dave Lee , interview w/ Joe Justice former Tesla.

[@Dan-gd2rk]

this clown nor tesla have a clue about quality control

[@Samuel-ym7ls]

This is all an investor needs to know. Thanks,

[@CookiePepper]

Backward compatibility is easier one. Future compatibility is not easy.

[@carpenter3069]

Phlogopite mica remains stable at higher temperatures (to 900 °C (1,650 °F)) and is used in applications in which a combination of high-heat stability and electrical properties is required. Muscovite and phlogopite are used in sheet and ground forms. Wikipedia

[@Miata822]

It will be interesting to see if we hear about that DC-DC converter once someone who understands it takes a look.

[@danapeck5382]

Thanks! For this interested layperson, absolutely fascinating

[@SimonEllwood]

Plaid can AC charge at 16kW 3 phase AC so maybe that explains the extra fuses.

[@brianb-p6586]

3-phase AC charging is a common feature in Europe, not new and not unique to the Plaid.

[@SimonEllwood]

@@brianb-p6586 The 3 is only 11kW Three Phase, I have charged mine at that at destination chargers.

[@brianb-p6586]

@@SimonEllwood 16 kW versus 11 kW wouldn't explain the number of fuses.

[@nezermv]

Very good quality and easy to use.

[@Pr3ct]

Did Sandy just quote Alanis Morissette?😂😂

[@ardenpeters2952]

Fascinating comments! Such a good non-commercial site; Tesla stretches it’s lead!!

[@sjokomelk]

The number of fuses on the charger is different versions for US 2-phase 240V power, and European/international 230/400V 3-phase. Most likely the Plaid will use the same 3-phase charger in all markets, only configured differently with the charge port connector and software.

[@charlesball6519]

Actually, US 240V is still single phase. It's just two 120V lines off the same phase from the powerlines.

[@jm-btt]

@@charlesball6519 The phases are different (180º), agree ?

[@charlesball6519]

@@jm-btt Not even 180 degrees apart. As I said, for single family houses in the US, it's a single transformer connected to one phase of the main feeder lines. The transformer supplies two 120V lines and a neutral to the house off that one phase. Only in apartments, condos and commercial businesses is there actual 3 phase power where you get 120V, 208V, 240V and even 480V (This is accomplished by three transformers on one utility pole)

[@reggieinsider8816]

Thank you Sandy🙂

[@brandoYT]

Model S has more battery power than Model 3/Y -- may explain extra components. saving part numbers too

[@dk7863]

Great points on construction improvements.

[@ludditetechnologies]

Awesome, as usual. Thank you gentlemen.

[@TheGreatestJuJu]

Can’t wait for lucid tear down

[@chargehanger]

The change of 2 transformers -> 4 transformers per channel may very well be the addition of mosfet gate drivers for the V2G capability.

[@vidznstuff1]

V2G? Cite source, since my understanding is that Musk is anti-V2G

[@JK-ku2mj]

@@vidznstuff1 roadster was able to V2G and it will be the future...

[@chargehanger]

@@vidznstuff1 just an hypothesis seing those transformers, and knowing the architecture.

[@lechavs]

@@vidznstuff1 he's not anti v2g, he said they had it but nobody was using it, so they removed it

[@jamesbuckingham8073]

some of the folks making.thoughtful comments could be future employees

[@lorenracicot7814]

Hello, Can you do an deep dive into how the potting material in contained and how Tesla prevents leakages during manufacturing?

[@scrapbongo]

Great job guys! Tesla is so impressive with each subsequent revision improving. Maybe use the pointer sticks to highlight the subframe etc, helps focus the discussion to the part location. /cheers ScrapBongo Liked

[@tobyw9573]

Fire protection would be important for operation in tunnels and other confined spaces.

[@jamesrapp9778]

Interesting cool. Cheers for the video mate 😎 👌

[@djbowler3333]

Just out of curiosity, why didn't you drive the battery to zero state of charge before the teardown? For safety purposes.

[@pasmas3217]

just a guess from sb who is curious on the same question: probably driving the battery to 0 pretty much kills or at least harms the cells (talking about actual 0, not 0%) and they want to do tests on the cells both about energy dencity, charging, other stuff and chemistry given that they write detailed reports on the car that they sell to other companies (competitors)...

[@senftube2460]

0% doesnt mean there is no more voltage, its still dangerously high. You would only discharge for fire savety reasons which is no serious concern if the battery isnt mechanically or thermally stressed

[@arguanmodeth]

The batteries are pretty much harmless they're only 85 volts and as long as you don't complete a circuit you're good. it's not like ac where if you touch one wire and you're grounded your toast

[@MrReeceyburger123]

Wow you guys really pick things apart, awesome subscribed 🤟

[@MunroLive]

Welcome aboard!

[@buckaroobonsi555]

A lot of that is not efficiency it is cost savings. Reducing copper and iron is about cost saving not efficiency with regards to the charging systems. I would bet the power coming out of that newer charging system is much dirtier and wonder if it has the same durability? Unless the IC's and transistors are much more efficient and more robust taking out copper and iron just means cheaper! With out knowing what the actual specifications are and how they have changed it is hard to say it is "better" unless your only metric is cost savings. Look at the trouble GM is having with warranty and out of warranty issues due to the wrong kind of cost savings!

[@KyleHubb]

I guess it's about creating a balance. There's always a tradeoff somewhere. If it's about efficiency, I'd think it might be more expensive to manufacture.

[@rkriisk]

Cost savings yes, efficency also yes, however LCL and LC filters are like music instruments tuned precisely to switching frequencies and there is nothing wrong with this picture as far as reliability is concerned. As switching losses go down because semiconductors get better so the switching frequencies go up and this reduces always the size of "magnetics" components. As for the need of additional isolation transformers I speculate that they have added additional two Hall sensors in order to measure current around planar transformer. As previously it might been enough to measure current using just two resistor shunts (which cant measure things around transformer due to too high switching frequencies)

[@ChadCourtneyTAZ427]

Interesting you focused on the coil reduction, but didn't mention the Ceramic and Film Capacitor's were significantly increased - I'd be interested to see what the filter curve from that, but shows you can change things up. Also interested in seeing the cost difference of reducing the inductors but significantly increasing the capacitors.

[@martylawson1638]

I've only done this tradeoff on a tiny filter, but using more capacitors vs inductors is generally more expensive but smaller and more efficient.

[@DoughnutsInspace]

Great job all, that 28 minutes felt like 5 minutes.

[@LawpickingLocksmith]

Popper evolution under the hood! I like it!

[@sickre]

You can also hire Australian engineers easily via the E3 visa.

[@sammiller6631]

Doesn't Australia need its engineers?

[@Leafyfpv]

kinda wishin you all had some mini hands of some sort for them sticks, but the matchstick comments are great added entertainment... Thanks for sharing your insight and a look inside this pack.

[@peteregan3862]

While Tesla is still distributing parts all over the vehicle to maximise usable space, I think there is lots of saving to be had by putting the charge point on the front quarter panel, near front door, and having an inverter box with all the high voltage equipment in it bar the battery and motors. They should then have a low voltage box next to it which includes the main circuit boards and 4LFP battery cells. Next to that would come the HVAC systems. It could all be mounted on the strut/air tank. A few metres of cable between inverter and motor is fine - it is done in F1.

[@brianb-p6586]

Inverters can be remote from the motors, but it is electrically undesirable and has no advantages - high voltage and cooling will be needed at both the motors and the accessory equipment location, regardless of which one includes the inverters.

[@peteregan3862]

@@brianb-p6586 The undesirability is tiny, other factors dominate with F1 cars 2 motors (60 KW attached to crankshaft and ???KW attached to turbocharger). Material mass, part count, thermal exposure, circuit length and x-section, damage risk, packaging and assembly costs all favour separating the inverter from the motor. Inverter casings are often a similar material to the motor casing when attached to protect from damage. Plonking all the HV inverters for charging, front and rear drive, and HVAC on one cooling plate in a waterproof intumescent plastic box high under the hood, shortens circuits. Inverters are light weight, so high up away from floodwater is no bad thing. Many first gen MS were written off after excursions into water. The Cybertruck will now be dual rear or quad motors, and Roadster quad motor presumably. Semi is quad motor. Munro noted that the MY and new MS have essentially the same electrical architecture, with part positions not occupied where not needed. Tesla could have essentially the same electrical architecture for all its vehicles by changing cable sizes and populating/not populating parts.

[@dennisfahey2379]

Note the potting compound on the torroids not only help with thermal transfer - they reduce the noise (hum) by eliminating air flowing in the flux fields. And the Mica is both a thermal conductor and an insulator and probably has a very high flammability rating. I bet when one of those enormous nuber of individual batteries blows the momentary temperature (white flame) is very high.

[@scottprather5645]

Great video it's exciting to see this new technology emerging Also love seeing engineering done right and constantly improved we need a lot more of that in the world !

[@Moocowsia]

Mica presumably wouldn't have much of an environmental impact to mine. It should basically just be quarried and ground up. Certainly not comparable to mining metals, milling them, and refining them. Is this stuff a mica impregnated plastic?

[@Cloxxki]

Let alone refining oil to plastics.

[@SniperSnake50BMG]

Finally the most anticipated moment!!!

[@snitox]

I'm kind of a Tesla hater but still appreciate the work their engineers put into their products.

[@rogerstarkey5390]

I suppose that's something.

[@Cloxxki]

@@rogerstarkey5390 It would be something if Tesla pretended better to care about customers and wco business practices. The blind hype for the brand makes others extra alert to stuff that's wrong.

[@troywalt4834]

Hey Sandy, could you please do a BYD dolphin with the new blade battery analysis, it's a good sedan for only 14 000 dollars.

[@EMichaelBall]

Do they have an Asian division to do it? I’m not sure they could legally get a Dolphin into the US, even for a teardown.

[@rogerstarkey5390]

Stop asking for cars which aren't available.

[@brianb-p6586]

@@EMichaelBall that's a valid issue, but since they destroy the cars that they tear down (so no operable vehicle remains), I'm sure it could be managed.

[@troywalt4834]

@@rogerstarkey5390 it's available In china, but maybe they can't import cars

[@dennisstafford7801]

Nice work as usual, we do not do enough praising of good smart design that makes a great product and make money for the company.

[@toneldaclan9283]

Maybe they used Mica also as a thermal insulator to keep the battery temperature affecting the cabin and keep the battery as a heat source for the thermal system.

[@fehlix5134]

Just wanted to go to bed (22:14). Looks like this can wait half an hour :)

[@straighttalk2069]

Excellent work from Sandy Ben and the camera man, I learned a lot.

[@michaelcoghlan9124]

Really interesting, thank you very much.. M

[@brianb-p6586]

18650's are not smaller "batteries", they're smaller cells (than, for instance a 2170 or 4680). They have 100 kilowatt-hours of energy in the pack, not 100 kilowatts (which would be power). The amount of energy (number of watt-hours) per unit mass (kilogram) of battery is energy density, not "efficiency".

[@Resist4]

They are smaller in diameter.

[@devilsoffspring5519]

I rarely read a post or watch a video where the reporter/narrator has the foggiest idea about energy vs. power, let alone knows jack about the units!

[@Cloxxki]

@@Resist4 And length. This we all know.

[@brianb-p6586]

@@Resist4 That whooshing sound is the point going over your head. Yes, an 18650 cell is 18 mm in diameter by 65.0 mm long, which is smaller than the 21 mm by 70 mm of 2170, which has nothing to do with using the wrong word "battery" instead of the correct word "cell".

[@mikebalentine]

Stellar content

[@stevehayward1854]

In the SW UK we got billions of tons of Mica just sitting around, in the process of mining China Clay, we had to create Mica dams or settling pits to stop Mica washing out into the local rivers and this process has been going on for centuries

[@ericobut]

I'm wondering what it's like as a battery design engineer watching these guys talking about their creation What Munro saw and got right/ wrong and that cool design someone created that Munro missed

[@gust9464]

Sandy, these videos are excellent. Love you guys at Munro 🙏🏽

[@MunroLive]

Thanks

[@jacksonhanson154]

GG to the schmuck capacitor supplier...TESLA GOT OPTIONS HOMIE