This is NOT Lean Design: Hummer EV Battery Pack Breakdown
ฝัง
- เผยแพร่เมื่อ 18 พ.ค. 2023
- Antonio and Julian break down the massive battery pack from the Hummer EV.
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#Hummer #EV - บันเทิง
"Tactical Cooling Lines" is an awesome line 🤣
The theme of “Who Killed the Electric Car” lives on at GM!
Yeah they're trying to pad the pockets of the union workers and the suppliers at the cost of this ridiculously wasteful design. When this ultimately fails both financially and logistically, they'll say EVs are impossible to make money on. Without Tesla around to keep them honest, they would get away with it too.
And the spirit of "let's hate GM because they were ahead of their time!". Such foolishness, the EV1 was way too early, it never would have made money.
Mary Barra was right, GM are definitely leading in one respect!
Weld hours per watt hour? Lol
Yeah overweight battery pack with 3500 welds! That’s a huge expense even with robots and inefficiency in time!
They could’ve made it out of aluminum had less welds, less weight, which resulted in less mass lower watts per mile
Epic Failure
🤢🤮
😂😂😂
The only thing they might mlead in would be lose per vehicle. Rivian is probably winning followed by lucid but Gm is right on their tail. 2.8 billion in advertising isn’t enough to sell these pigs.
Pretty sure I know why Sandy isn't in this video. TH-cam would disallow the video for exceeding the maximum allowed expletives.
The amount of fucks he would give, out weights the battery.
Whole video beep beep beep beep beep beep 😂
Shall I explicate ‘expletives?’
Yes agreed also although possibly new to presenting maybe some feedback from inside team, the whole hands in the pocket thing is not a good look!
😂💀
I'm not an engineer but I can't get enough of watching the Munroe guys rip off the "veil" of marketing hype and expose all the engineers' dirty secrets, who probably hoped they would never see the light of day! 😂 Fantastic analysis once again team!!
wait wait wait they think GM can do lean design oh those fool's🤣🤣🤣
The Munro guys are production wonks who know nothing about system analysis. Why is the Cybertruck a failure that achieved none of its design goals? Hint: lean design. GM designed for total system capability and product line efficiency, and the tradeoff is a production design that isn't lean. Can't have your ice cream and eat it too, but these guys are too small minded and focused to see that.
These guys could teach a master class in tact. “How to tell someone that their product sucks without hurting their feelings” 😅
I get the feeling they have to do this a lot in the consulting world. They have lots of practice 😂
You're going to want to say "typically" a loooot. lol
Government motors.
How embarrassing as an American.
Because they are a potential or active client. Yep.
"...and typically, this is not an uncostly material..." 🤣 Love it!
Yes and the lean production and cheap to produce Cybertruck gets how many miles, and how bad is the charging? This design has a purpose bub.
I can honestly say that GM is a leader, in EXCESS!
YES - excessive range and charging speed, exactly! Let's compare to the Lightning, Rivian and Cybertruck, all which are made with this soo important production lean design.
Antonio (morethan once ): "it's not terrible ..." This is the best damnation by faint praise.
And what exactly makes Antonio an authority on this subject?
TH-cam
@DouglasLippi,
TH-cam
and The Comment Section Board of Directors
Tesla- the leader in cost reductions , GM- the leader in excess, Munro and Associates- the leader in Lean Design for manufactuing advice. YOU GO Munroe Team!!!
@@vickykennel7414Vicky the Tesla hater. Get a life, boy. How is you Toyota going, Trumpet?
@@vickykennel7414 What are you, short selling stock or something? SMH
But “Mary led”
-Joe Biden
@@RayNLA Yes, he was buttering her up with a compliment. Joe probably should have rejected that speech.
@@JasonWW2000
You’re absolutely right about that! It was a comical statement speaking directly to the UAW.
The UAW appreciates those welds.
why, do you think a person is doing the welding ?
@@gcoates7 I don't but I'm sure simplifying a vehicle like that means less people and less union dues
GM is doomed….that doesn’t bode well for union workers.
I've been inside the Factory Zero and cell plant in Detroit and Brownstown. If you think the battery is complicated, you should see the equipment and machinery required to produce these batteries.
$$$$
OH MY GOD THEY USED WELDS!!! You know I will NEVER buy a car that has welds, thanks for the tip. I'll buy the Cybertruck instead with its crappy range and charging speed.
As polite, incisive, and honest a tear down as you are ever likely to see. I continue to be immensely impressed with Munro&Associates for making this world class expertise freely available on YT. Very impressive video, and the channel continues to lead the pack.
And completely irrelevant to customers concerns, which are range and charging speeds. Take a look at the lean competitor specs and tell me you'll buy a lean battery pack over one which gets you to your destination quicker.
"as we are approaching a critical amount of separators here, we should really think about adding some additional separators to separate all the separators from each other" - gm engineer meeting
😂oh God I can hear that type of conversation then some bean counter piping up to say" do we really need any separators?"
"I heard you liked separators, so I added separators to your separators so you could separate the separators from each other."
Can’t have separators right next to each other. Gotta separate ‘em by something!
Thanks for sharing such incredible info ❤
Munro bought 50% of GM Hummer EV Q1 2023 deliveries 😮🤯
:) crazy
the big question is: why?
does munro want to shame GM?
@@skataskatata9236 GM has shamed themselves....again
😂😂😂
😂😂😂😂😂😂😂😂😂😂😂😂😂
Would love to see Sandy's candid thoughts on this thing... 😂
Sandy : "🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬. ..."
No thanks, it would be more drivel about how the only thing that matters in a car is how cheap it is to produce for the OEM. Customer range and charging? Nahhhhhh
18:06 I knew a company that would put ratings stickers on products that were not rated for what the stickers indicated. Worked like a charm for finicky customers. All of the sudden , after being shown the sticker, the customers praised the increased quality they perceived😂 Stickers matter😂😂
Before anyone gets angry, there was no issue with the quality the customer was receiving. Tests of quality were ran(and passed) and the ONLY issue was customer perception of "previous" product quality. Since we couldn't improve a product that was already tested to be in good working order, we just improved the perception😂(they were also not charged for the "change")
They did an amazing job of staying professional and not just calling it out as shitty design.
You mean lying?😂😂😂
Except, ULTIUM is a Crappy design.
its still using UNSAFE & outdated Pouch Li cells from LG & Sk.
Cylindrical are FACTUALLY safer, and more Efficient.
gm has pushed back the USA battery factory to 2026+ , mary emBARAsing.
NOT lean design........mic drop
"This is an unconventional design. They made this in a very unique way. The use of weather stripping certainly haven't been seen in battery packs." Lol.
@@bradthebad01 They also said it was simple so what part of those four statements do you see as a negative? I see them as positives from an aftermarket viewpoint.
I would have paid to see Sandy do this episode!!!!!!!!!!!!!!
Sandy: ".. this piece of cr🤬🤬👹🤬🤬👹🤬beeb, beeb, beeeb, beeb..
TH-cam should be band unfruitful video I can see it causes chaos
>3500 welds !? 😮
When you said this was a small car without wheels, you weren't just referring to its weight
I wonder if the same welder who designed the pack also designed the rest of the truck?
What a ludicrous example of how NOT to do it, appalling.
That's GM for you
It is almost incredible to me.
This is 2023, when pioneers like Tesla and Lucid have set the bar high for design and efficiency.
The design and build complications are shameful. Something that a village mechanic in Africa or South East Asia would hesitate to acknowledge as theirs.
@@WiseWik Any bets on what Mary’s legacy will be?
"ludicrous example", I see what you did there, and I approve.
@@fonkenful Ultium.
The difference between when Sandy and Cory talk about a teardown is that they come right out and say "this is great" and "this is terrible".
Exactly what I was thinking!
It is obvious.
They're probably the only ones allowed to make those objective observations.
'Wow, this is absolutely... untypical'
@@nickfosterxx That has been said about Tesla as well, so what's your point?
I can't wait for the Cybertruck breakdown !!!
26:20 Munro's "7 points to make you lucky"
1. Don't substitute Activity for Achievement
2. Look with New Eyes and Question Everything! Every Day!
3. Find friends to help you, and hire the best in the world! Pretend your business is your body and you need.. Brain Surgery!!
4. Don't believe the Future is a Reflection of the Past
5. Get outsiders to benchmark your ways and show you how to improve, then Implement as fast as possible.
6. Use Co-Op-edition. Don't struggle alone!
7. Dare to share! Form groups and brainstorm together: everyone will profit.
Seems like another example of an EV rushed to market when not ready for prime time after years of ignoring EV disruption
7 ultium platform evs back in Sep of 2017 we're approved for production by Mary emBARRAssing and reuss for gm.
So this wasn't rushed but gm definetely isn't ready for modern fully connected evs either. Just look at a 2023 bolt vs a 2017 bolt. 😀
@@radudenghel It is all part of the scam mary first tried with nikola. She is all about faking EV development, not actually making one. This hummer is the least efficient "production" EV ever made. Everything is inefficient slop that is thrown together to pretend they are doing r&d on EVs.
“rushed” 2 market? There are none on the market…
@@FrunkensteinVonZipperneck ha ha Didnt they sell 4 of them?
@@FrunkensteinVonZipperneck Yes, it was developed in less than half the time of a typical vehicle. So basically rushed.
Interesting tear down. 👍🏻
Love the 7 point system in the background to end. 😎
Hello and thank you Sandy and Crew for such an overview! I watch your vids a lot, especially the “teardowns.” You help reveal some amazing and innovative features including safety features, versatility, and creativity I wish were trickled down to ALL automakers in one application or another. With the limitations, it hopefully with get that particular manufacturers’ attention. However, I have lots of unanswered questions about BEVS and PHEVs vs ICE, and the practicality and safety concerns regarding Autopilot in a world where we appear so distracted already. Even though this video does not necessarily focus in on that particular interest, you have touched the subject many times before, and you are more than qualified to delve into the subject. Yes, “Driver Assistance” aides we need to assist us in being safer, more efficient, and more aware. But I beg to differ on many of their practical applications. It is almost as if we are being sold BEVs as the next thing since water. What of Hydrogen Fuel Cells and other Bio-fuel technologies we have been hearing about? I like how Toyota and Mazda and BMW and others I am sure of have chosen not to put “all their eggs in one basket” in such a dynamic market. Thank you for making such informative videos. We need more real world comparisons between all these type of technologies. I’m advocating for a fun [filmed] competition between ICE vs BEV vs PHEV vs Hydrogen Fuel Cells and other alternative fuel sources to do [cross-country] destination runs across the continental US and in all countries where they appear to be trying to bury ICE vehicles. I am actually becoming convinced that we will be very surprised. ELON inspires me just as Nikola Tesla does. We should not forget the past and our history if we ever wish to move forward. Range anxieties and practicality are a must! I would so appreciate a sit down interview with ELON and even yourself as you did on more than one occasion. But I’m still very new on this platform. All these different automobile variations in terms of their sourced fuel applications all have their practicality and niche, so why not let them demonstrate their practicalities in a healthy and fun competition? Thanks again and keep cranking out those videos.
This looks like a union shop dream build. It just keeps on needing people/time to work on it to make it what it is.
That's what stood out to me too.
This wasn't designed by engineers but by the union hiring managers.
Unions aren’t responsible for this abomination. LEGA execs need to be held accountable for wasting 2 Billion that GM does not have…
@@830927mjkiObviously designed by a welder, no?
So, did the same welder who designed the pack design the rest of the truck?
I work there and build these trays, and I can say that in no way, shape, or form do we have any union involvement, nor do we have any want for it. I’m fine with managing my own job and don’t need help with my responsibilities!!
Julian is a really great speaker, can't wait to see more of him. 👍 As for GM, I just can't believe how they can be that much behind after so many best practices already on the market way earlier.
There have been many indicators over the years that GM was full, from top to bottom, with EV haters and EV sceptics (and certainly some notable exceptions, but sadly not enough). Especially at the top. So now that the executives finally bit the bullet and decided to make the shift to EV, well . . . Surprise, Surprise!! it turns out they can't actually do it. They spent a fortune advertising all the new Ultium EVs early last year. Now over a year later the cars are just now starting to trickle out, in single digits per day.
Let's hope they've done a better job on the Lyriq and better still on the Equinox. It would be bad all the way around if GM implodes.
Thanks for the tear-down, guys. I can't help stop thinking that this Hummer EV pack, on its own, weighs just a little bit more than the entirety of the 2012 Mitsubishi i-MiEV I drive. Sad to hear that GM is going to stop production of their sensibly-sized and affordable Bolt EV/EUV series later this year and continue marketing impractical electric behemoths like this.
They are going to replace the bolt with the equinox EV. At $30k for the equinox I would not take a second look at the bolt. And I currently own a bolt 😂
Very informative - loved those charts at the end. I expect all the steel in the pack is to be able to say it is ruggered and efficiently packed.
Since the Hummer EV came out, I had a feeling how inefficient and lackluster the engineering and design was going to be, this just confirms it. Thanks Munro team!
It was designed quickly so they have to make it reliable over efficient (in design).
In their defense, it was pretty clear from day one that the Hummer EV was a marketing exercise and not really supposed to be anything else.
The job of the Hummer EV was to reorient costumer perceptions of EVs and make it socially acceptable for men who are accustomed to driving big hulking inefficient pickup trucks to buy EVs. I think it did this pretty well and was really a stroke of marketing genius.
The big surprise (for GM) came when people lined up around the block to get them. They were probably also a little surprised at how fast it could accelerate.
They obviously didn't intend to make very many. So the emphasis in the design here is to make a truck that won't fall apart.
The question is, how's that Lyriq looking? It took a little longer in development. Hopefully it's not a disaster. And hopefully they will actually ramp it up soon. Early signs are that it might be ok.
A short design cycle, plus the LG/Bolt fires on their mind. I'm sure that factored into the design of an off-road worthy battery pack.
Honestly, an over-engineered pack would give peace of mind, even though only a few percent of these will travel off-road.
Then again, most Jeeps don't see anything but pavement, either.
Just following in the footsteps of the original Hummer.
@@Ebooger In one regard, yes. Its overly rugged.
At the current Hummer production rate, 8 per year, if you own one, with design and advertising costs, it likely costs GM $100M each. Perhaps the best deal on the planet for the consumer - not so much for GM.
Thanks for the overview! GM definitely has some opportunities to clean up and streamline the packaging of these modules, and I'd love to hear some GM engineers speak to some of the design choices (e.g., I wonder whether the thermal compound is doubling as an electrical insulator). It will also be interesting to see variations of these packs as GM starts to use other cell formats and pack configurations. The single-stack pack from the LYRIQ will be interesting to see, as will packs that eventually incorporate cylindrical, prismatic, and lithium-metal pouch cells.
7:45 It's not horrible.
You did it, Mary!
19:29 The cells are effectively in 6P configuration across the entire pack for the HUMMER EV, so losing a single cell will reduce the entire pack capacity by 1/6th. Yes, it is possible to use smaller cells to increase redundancy to the point that the battery capacity is less affected by a single lost cell, but the counter argument is, perhaps don't sell or use a battery with faulty cells in the first place. 🤷♂
Loosing a cell that is connected in parallel can lead to many problems. That cell could become a slow short, draining all the 5 other cells and create imbalance that the passive resistors of all other cells in phe pack can not keep up with.... it can mean an internal short( worst case) or broken connection of the tab, meaning that it become isolated(best case if it is not intermittent) or also be a broken bms connectikn to the cell, meaning danger of imbalanced 2 consecutive cells that are not properly monitored by the bms.
@@Doctorbasss Oh, sure. There are a lot of problems that can result due to a bad cell, but for short-term, losing a single cell isn't catastrophic. For cars with 2P or 3P configurations, you're talking about losing half to a third of your range. for 1P configurations, your car is basically dead.
The Chevy Bolt EV is 3P, and early on, there were some cars that had issues with bad cells. They functioned normally until the car got down to under 30%, at which point the car would just die unexpectedly without notice. All it took was for a single cell to fail (or start to fail).
@@newscoulomb3705 If the battery operate at 7 or 8C max on 3p than it become around 12C on 2p which would create imbalance on the 2p vs the rest of the 3p cells and make the new 2p to age faster and make the bms hard time to rebalance everything. On my gen 1 Volt it is in 96s3p and this battery design with laser welded pouch and active cooling is really robust.
GM has also built this battery pack. to be serviceable (unlike the new Model Y packs). So if you somehow lose a cell then you can replace one battery module instead of the entire pack.
@@stephenj4937 that's not a long term solution. That's a quick fix to sell it and make it someone else's problem when the entire pack keeps going out of balance. All the cells in the pack should be the same age. You shouldn't just swap out a single cell.
A "unique" execution, eh? You guys are so polite... ;-)>
One thing to remember when it comes to stampings and the big 3 like GM, they have been using this form of manufacturing for so long and in so many facilities that they can very likely design and create new stamping tooling cheaper and weld it cheaper than it would to do it in aluminum.
This is the truth of it.
How many did they plan to sell anyway? 3? Not worth the effort.
As a research engineer who has to design for manufacturability, Munro and associates have opened my eyes to just how much little things matter when to scale. Most of my job is just to "get it to work no matter the cost" but now I always keep in mind that just getting it to work doesn't cut it, it also has to be reproducible just in case it gets pushed forward to scale-up.
When batteries go bad, they are not just an open circuit. The question is if you lose one or a few of Cylindrical Cell isn’t BMS needs to back off the charging capacity of the whole module or that cell would be over charged? Isn’t going to be the same as this large cell?
The cell has large contacts surface area between each other’s, reduces thermal impedance between the cells next to it. Thermal equalization between the cells allows consistency of cells capacity across the module results in higher module current capability.
Thank you, for showing this cool stuff.
That battery weighs ~1k lbs more then my first car, a 1979 VW rabbit
24:57 While it's true that running higher voltage will utilize the cables better, it's important to keep in mind that even at those higher voltages, the HUMMER EV is still pulling a sustained 500 A for a significant period of time, so it would make sense that those contactors need to be liquid-cooled.
It's sad for a teardown they missed critical features like wireless battery management. The fact Hummer chargers at a faster rate than any other EV and the modules can be used across vehicles.
@@theflew Great catch! I was so distracted by everything else I didn't realize that the never mentioned the fact that this battery features a wireless BMS. They've spent 15 to 20 minutes or more in other battery teardowns talking about great ribbons are instead of traditional sense leads because of how much material and weight they save. 🤔
@@theflew the hummer has a terrible charge rate for the size of the battery. It should be able to easily charge at 600+kw. We know that modern batteries can charge at over 3C. This piece of shit bearly makes 1.5C
@@saff226 Please point to these magical 600kW chargers that could delivery that much energy. It can already max out 350kW chargers.
@@theflew Tesla's v4 superchargers can do 600kW. If GM moved to the far superior NACS plug instead of using the shitty CCS1 they would be able to use it
Wow this is realy amazing and gamechanging!Good job GM!
/s
Awesome video!
Glad you enjoyed it!
About a year ago we all took a "vote" and nobody wanted you guys to waste your time and money tearing down a Hummer. I am glad you decided to do so as this just proves how stupid the engineering of the worlds EV leader is! You guys are to be commended for not laughing too much during your presentation.
GM is a joke just like the fool in the WH.
Munroe is directly responsible for 50% of the Hummer EV sales!
You forgot to scare-quote "EV leader".
GM WORLD LEADER IN WELDS!
this is an early production battery pack
General Motors: Pushing the Limits of Transportation....... the wrong way for 115 years.
Cruel!
.
.
.
.
.
But fair!
@@rogerstarkey5390 also I must say their battery pack is better than I expected it to be, although it weighs more than 2 out of my 3 cars
@@morphelanImagine all Chinese and Indians having 3 cars. And still having only one body. 🤦🏻♂️
Thank you for the great video!
Do you have some pictures of the Battery Management System?
Wow. Just wow.
Good thing is that GM only built 2 of them......still practicing failure until they get it right.😂
one for Munro. Who got the second one?
They ran out of steel
The welder guy has a burn out syndrone and did quit his job.
Tactical cooling lines 😂
3500 welds. “You did it Mary”. The leader. In welds.
Hi. Very interesting, thanks.
So are you saying, that the hummer EV tear down report won’t be a hot seller??
I couldn’t imagine why..
I'm eager to see how the Tesla Semi will compare in those charts at the end
Enjoyed this one.
@13:42 I’m interested in seeing the thermal isolation in a thermal runaway situation 💥
A Hummer is not lean or efficient, who would have ever imagined that.... continuing where they left off the last time this vehicle was in production. 🤣🤣
Would expect nothing less from GM :)
Great video! Any chance of breaking down the contactor operation?
About the parallel cells config, Loosing a cell that is connected in parallel can lead to many problems. That cell could become a slow short, draining all the 5 other parallel cells and create imbalance that the passive resistors of the bms for all other cells in the pack can not keep up with.... it can mean an internal short( worst case) or broken connection of the tab, meaning that it become isolated(best case if it is not intermittent) or also be a broken bms connectikn to the cell, meaning danger of imbalanced 2 consecutive cells that are not properly monitored by the bms.
Elon Musk when asked about the mod3 front suspesion design Engineer and why the design had so many welds and pieces- " We fired that guy" , GM - we promoted the Hummer Engineers.😂
They hired the guy 😅
That was the unibody designer, not front suspension IIRC.
Replaced by gigacastings now.
You bought 50% of GM Hummer quarter production to take it apart 😅
I get a feeling that Antonio DiNunno didn’t like what he saw in this battery pack!
His lack of a “poker face” only made this video more enjoy!❤
Miles per kWh per Pound would be the best way to compare among vehicles, Km per kWh per Ton even better.
GM is leading! I mean, putting LEAD in its vehicles! 😂😂
Still has Tesla beat with their fool 4680 cells 🙈
@@abraxastulammo9940 And I guess that at least this pack is repairable 😅😅👍👍
@@abraxastulammo9940 Look at the monkey talking.
@@abraxastulammo9940 GM is moving to 4680 cells because LG pouch cells are rubbish
Nice guys!
My neighbor has 1 of the 2 HummerEV sold last quarter……looks like you have the other🤣😎
Is he happy or embarrassed?
Tell him don't watch this.
Is this ‘neighbor’ what you would call sane?
Now this? This is ludicrous mode.
Antonio may have been joking about "tactical cooling lines" but doesn't GM have military contracts for Ultium-based products? One of my big fears with Ultium in general is that GM would design it for military applications and then attempt to spread out the cost with high volume, sacrificing range and efficiency (and profits!) of thier consumer-facing products. And IMO that is exactly what we are seeing here. This is modularity gone wrong.
At least GM is leading the weigh.
My fear is that soldiers will risk their lives in these spot-welded death traps.
GM ultium batter appears far less robust that what Tesla or catl does.
Why do you think and over-built battery case and coolant system would result in reduced efficiency? How efficient were you expecting a 1,000 hp HUMMER running on 35" to be, exactly?
Since Hummer is a GM company tied to former military contracts, steel around the battery packs is a great idea for that market!
A Tesla pack wouldn’t last 15 minutes where these are designed to go. 😂
If i was a a GM investor i'd be headed for the EXIT
Several years ago, hopefully.
I did that 5-6yrs ago. Cashed in all my GM and Ford stock...Put it all in to Tesla stock. Worked out quite well.😁😁
Why?
@@brunoheggli2888RLY? 🤦🏻♂️
@@motoarzan791 Did you sell them already?
First impression, someone was told to "Do it fast, do it cheap"
I guarantee it was neither fast nor cheap!
Complexity is expensive but the larger cells could be cheaper to build and assemble.
Fast and cheap is easily attainable quickly, but unnecessary costs and materials can amass over time. Doing slow and expensive development first will then become fast and inexpensive over time, and save from unnecessary costs, materials and quality issues.
GM definitely went the short term, but costly route while Tesla is going the long term and inexpensive route. Tesla just needs to work more on the car body quality.
Given this truck can take more abuse than any of the vehicles they compared it to maybe form followed function.
@@briansit8826 I wouldn't be so sure about that. Pouch cells are SLOW to manufacture and assemble with lots of extra packaging needed. I wouldn't be surprised if a cylindrical cell pack was way cheaper and faster to build and assemble per kW.
@@jg5001
The "car body quality" was a "US build quality" problem.
Lets hope the Chinese "Hit squad" currently in the US factories can raise the workmanship to the level of Shanghai.
.
(Can we say "workmanship" any more?)
Everyone at Munro is getting JACKED. There must be a gym somewhere closeby.
The video itself was very informative itself.
GM saving the world over here
saving the environment, one horrendous battery pack at a time
Is this pack from one of the TWO hummers sold in Q1 2023?
Did Dr Evil buy the other one? 😂
Wow. 3600 laser welds.
You led Mary.
20:14 - Nice to see the cell name on the cells: LGX E101A.
The energy density is pretty impressive. I wonder how much better the pack could be if they didn't use such heavy materials.
I think they should have used tungsten it's much more durable than steel, even if it's more expensive. Makes sense.
Cylindrical is superior .
I think they went for the heavier materials (steel vs CFP or aluminum) for cost savings. Giant batteries are expensive, and even at the ludicrous price of the Hummer they have to save money somewhere.
@@stephenj4937 - NOPE - nothing gm & FORD does is cost effective.
they CANT scale to Economy.
all their Vehicles LACK Advanced 4680 Cells, Structural battery pack, and Underbody Gigacastings.
gm & FORD Dont even make own MOTORS , Inverter, HEAT pump , Thermal system , Battery cells.
TESLA next year is making OWN Dies, Cathodes (multiple chemistry) Refining own Lithium. and looks to be making POUCH Lithium in China next year.
@@stephenj4937 Yeah. Gotta have that 500% profit...
You are making me laugh! Out of the two Hummers sold you bought one! I was right last year when I said they would be put together with spare parts and super glue. I just forgot to include weather stripping.
And fasteners. Tons of fasteners. Actual ‘tons.’
As a 30 year auto technician I think GM reinforced the coolant lines because their lines are notorious for leaking coolant at low miles.
More = Better. Nailed it.
Did GM use nails for fasteners too?
So this confirms that whilst Tesla’s design engineers are pushing the envelope in almost every aspect of car design; the Hummer team appear to be well and truly stuck in the 1960’s school of automotive engineering!
Tesla still can't get any electricity out of the main battery 1:0 for Ford
Even though they have Teslas to reverse engineer.
GM suffers from NIH: not invented here.
The hubris is astounding.
@@abraxastulammo9940 Tesla has powerwall...
@@abraxastulammo9940 Dude, you need to THINK about what you write and make your point understandable!
If Tesla weren't getting any power out of their batteries, they wouldn't be selling any cars. But actually they are among the top selling cars in the world.
@@nguyep4 Exactly, overpriced like f* while you have 90 kWh in the garage...
This Hummer EV is Munroe version of "Engineering Nightmare "
Please do a video on the liquid cooled contactors! I want to see how that works and maintains safe isolation with more than an illustration.
27:00 Got to admit, the Lucid Air does show some amazing numbers.
Lucid won't stop there.
@@andromeda9340 Well, they pay about 500k+ each car and they only make 150k each car, so they will probably stop soon, but still, they got some nice numbers.
And yet the Air isn't capable of off-road use, fording through 30+ inches of water, or towing 7500 pounds. The vehicles may have been built for different purposes.
@@theflew the hummer can't do those things either. It's to big and heavy for most off-road situations and the packs leak water. If you did tow 7500lbs you can only do it with 2 people in the car and nothing else or you will be over the tiny payload.
Well, they only sold 2 last quarter.
And at least one is no longer operable
And now GM regrets one of those sales.
@@jghall00 Nailed it.
GM, leaders in -extreme engineering- Sorry, that was meant to be OBSCENE engineering!
I imagine if you got an individual engineer from GM to explain this, they would be blaming other teams.
High strength steel can take beating especially important in off road rugged vehicle
HUMMER BV. The Baconator of Vehicles.
*Steel battery pack frames are far stronger than aluminum.
*GM could definitely do better on the number of components for the battery carrier.
*Two parallel 400 volt packs is what allows GM to support 350KW charging
*The contactor assembly is complex, but I suspect this is to support the heat pump system
*I like the thermal runaway barriers in the module
*They completely missed the coolant structure. Those plastic runs are compressible and will expand when compressed. This allows *GM to tighten down the battery module to prevent water leakage.
*GM has definitely designed to swap out modules, thus the capacity loss when a cell has a problem and won't hold a charge.
*The nylon lines appear to be designed to last more than the standard 10 years of a cooling hose.
*Copper is a better conductor than aluminum. Makes for a far better buss bar.
Only 2 hummers were sold in Q1 of 2023. GM expects approximately 70,000 Bolts to be sold by year end 2023 at which time production will cease. The Bolt currently makes up the vast majority of GM's EV sales. By comparison Tesla sold 93,294 Model Y's in the US alone in Q1 of 2023. In Q1 of 2023 it also became the best selling SUV and became the 4th best selling vehicle in the US beating out the RAV4. They sold a total of 759,000 Model Y's world wide in 2022 which made it the 4th best selling vehicle in the world and number 1 in terms of revenue. It is on a trajectory by year end 2023 to become the number 1 top selling vehicle in the world. Yet GM CEO Mary Barra, has claimed publicly on numerous occasions they will catch Tesla by 2025. In what deluded fantasy does she live in? The reality is they hemorrhage lots of money on every EV and will be so far behind Tesla you will need a telescope to find them.
R. I. P. GM...
@@mikafiltenborg7572 Rust in Piss GM
Maybe GM is looking for government bail out money because it's too hard to build a decent EV.
@@BnORailFan They better not try that scam again. The EV1 debacle and the bailouts are why I would walk before buying a GM product.
Let's be clear, GM only made 2 Hummer EVs in all of Q1, so that is why they could only sell 2.
I want to buy a wrecked one just for the battery pack alone, over 200kwh of off-grid storage, could run a house for days.
This is a good idea!
It could run our whole 5bd 3 bath ranch house for almost 2 weeks. 7 days even during the summer here in GA. 😀
@@4literv6 Sprinkle a little solar on the whole setup and you're good to go
LiFePO4 for $40,000 w/ tax credit.
@@benc1927 exactly, hoping to ad that late next year or in 2025 using locally sourced panels. 👍🏻😎
It was interesting to hear comparisons to Ford. Yes does did some somewhat similar decisions but they at least were trying to use more advanced manufacturing.
Great example of fine GM engineering...
Contradiction in terms?
Well since gm is gov motors since the bankruptcy and billions in bailouts they took? This makes sense as a gov motors union designed ev project. Leading indeed Mr president. 😏
This was a great overview, thanks for sharing! Room for improvement on GMs end however this is still leaps and bounds better than burning gas over and over and over and over and over.
Love stampings. It's the real mass production.
Not with over 200 of them.
@@fredbloggs5902 play on words. Also Nissan's casing in Leaf was pretty efficient.
That's a king size bed under there!
Heaviest King-sized bed ever.
The battery and box weighs nearly as much as my entire EV (Seat Mii)
The EV hummer is only a tiny bit heavier than the ICE hummer... It is a crazy vehicle...
You could also put your EV in the bed of the Hummer. What's your point? Bigger vehicles weigh more.
I'll help you guys out.
1) Thermal runaway - What is the melting temp of an aluminum battery enclosure vs the temperature a lithium ion battery reaches during thermal runaway?
How does the Hummer EV battery compare to the Lightning battery for thermal runaway protection?
2) "Backwards flow path" - See #1
3) "No thermal function in this section of the cooling plate" - Take the plastic part to the bandsaw or x-ray
4) "Talc filled polypro insulating material" - Not correct
5) "Nylon piece of plastic" - Not correct
6) "This is for isolation" - Not correct, see #1
7) "Tabs use ultrasonic welding to connect the electrodes" - Not correct
8) "Tactical cooling line" - Not correct, see #1
Lastly, if the 100kWh Model S battery is 1377lbs a 200kWh Tesla battery would would be ~ 2754lbs.
The Hummer EV 212kwh and 2818lbs, a whole 64lbs difference. You're not going to notice a 64lb difference in your range.
Oh this is going to be spicy
At 6:10 mentions pack is broken into two blocks, and uses series or parallel switching for drive mode or backward compatible DCFC mode...
Finally! Someone did the simple solution instead of adding extra dc-dc voltage down converting for a 400+v archetecture.
Next trick is to let such a system utilize dual DCFC charge ports and charge sessions at locations that can not do the higher pack voltage, resulting in the same half time needed advantage.