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Thread: Chevrolet Volt's Battery Pack re-Ignited

  1. #1
    Flashaholic Glock27's Avatar
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    Default Chevrolet Volt's Battery Pack re-Ignited

    I thought I read once that the Volt's battery pack is made up of over 1,000 18650's

    http://www.courant.com/business/hc-h...,0,94353.story

    G27

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    *Flashaholic* Monocrom's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    . . . And that's why I will never own an electronic or hybrid car in my Lifetime.
    "The World is insane. With tiny spots of sanity, here and there... Not the other way around!" - John Cleese.

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    *Flashaholic* StarHalo's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    You might want to compare the number of fires caused by gasoline-powered cars versus electric cars. Also, if there's been a fire in your garage and you just leave your electric car with it's case of li-ions parked in it for several days, you should not be allowed to be a firefighter..

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    Flashaholic* Bolster's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Quote Originally Posted by StarHalo View Post
    You might want to compare the number of fires caused by gasoline-powered cars versus electric cars.
    Given there are proportionately few electric cars out there, a simple numbers comparison would make the electrics look safe. But the important number to compare would be percentage.

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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Surely they wouldn't, it would be lighter, cheaper and safer to build their own large capacity prismatic cells.
    mossyoak --> Dear God man, its your honeymoon, screw the flashlights, bring one or two and some backup batteries, and fill up all that extra room you have with condoms and alcohol.

  6. #6

    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Quote Originally Posted by tolkaze View Post
    Surely they wouldn't, it would be lighter, cheaper and safer to build their own large capacity prismatic cells.
    While I'm guessing GM may not make their own cells, it certainly seems like it is a prismatic pack. wikipedia quotes it as a 16KwH pack with 288 cells, 55.5 Wh/Cell would be 3.7V @15AH, so either prismatic Li-Ion, or possibly M sized cylindrical cells.

    IIRC it was the tesla roadster that used 18650's

  7. #7

    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    I saw this in AutoWeek when it happened. I think it was discovered that the Volt did not cause it. I may be wrong...

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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Quote Originally Posted by CKOD View Post
    While I'm guessing GM may not make their own cells, it certainly seems like it is a prismatic pack. wikipedia quotes it as a 16KwH pack with 288 cells, 55.5 Wh/Cell would be 3.7V @15AH, so either prismatic Li-Ion, or possibly M sized cylindrical cells.

    IIRC it was the tesla roadster that used 18650's

    I know the dimensions of an N cell, i haven't seen or heard of an M cell. How big are they? what else are they used in?
    mossyoak --> Dear God man, its your honeymoon, screw the flashlights, bring one or two and some backup batteries, and fill up all that extra room you have with condoms and alcohol.

  9. #9

    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    http://www.batteryspace.com/LiFePO4-...-Approved.aspx

    Big, lol 42x120mm, those are LiFePO4, and not whats used in the volt, but ive seen people use them on ebike, and other spplications. Peak LED has some lights which use them
    http://www.em-mgt.com/LED/SANDR.html

  10. #10
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Battery technology ready of these electric cars must always be ready. I somehow like the whole configuration of volt, I just hope that this car will capture all market in automotive industries.In addition to that,I have also read that Chevrolet recently authorized shops to start selling the demo versions of the Volt, Chevroletís plug-in electric hybrid.I believe, Chevrolet is looking to boost sales of the Volt.However,one grievance among consumers is that they couldn't get the Volt with the options they want. Article Source:Chevy Volt demo cars to go on sale to meet demand

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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Now, after at least three crash-tests resulted in fires or sparks from the vehicle's lithium-ion battery pack, GM is working to reassure consumers the Volt is safe and avoid a potentially embarrassing gaffe just as its turnaround is taking hold.

    On Monday, the Detroit auto maker took the unprecedented step of offering loaner vehicles to any of the about 6,000 Chevrolet Volt owners who might be concerned about the vehicle's safety while it and U.S. regulators try to determine whether the car is a fire risk after a serious crash.
    ...
    GM said it believes sparks or fires that occurred in three Volt batteries following crash tests by the NHTSA were caused by electronics malfunctions and not overheating chemicals within the battery cell. The company has assembled a team of engineers to work with federal safety officials to pinpoint the cause and work out a solution.

    GM is now working on fixes that would make the battery design sturdier, GM product chief Mary Barra said on Monday. Nissan Motor Co.'s Leaf, the only other mass-market electric car on sale in the U.S., has a steel encasement around its battery that helps protect it and prevent the possibility of a fire in the event of a crash.

    Nissan's Leaf also doesn't require coolant to regulate the temperature of the battery. The Volt and most other electric cars headed to market do. A coolant line was damaged in the initial Volt crash test.


    more: http://online.wsj.com/article/SB1000...270911886.html

    And, from a follow-up article:
    In May, the National Highway Traffic Safety Administration performed a crash test of a Volt and three weeks later the battery in the vehicle caught fire. Earlier this month, NHTSA tested three volt battery packs for crash-worthiness. One eventually caught fire; sparks flew from a second and a third showed no problems.

    http://online.wsj.com/article/SB1000...204658852.html

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    Flashaholic* LEDninja's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    GM offers to buy back Chevy Volts
    http://www.theglobeandmail.com/globe...rticle2256947/

    General Motors has stepped up its campaign to reassure customers about the safety of the Chevrolet Volt, its first serious foray into the electric car market.

    GMís chief executive officer Dan Akerson said Thursday that the company will buy back a Volt from any customer worried about the safety of the vehicle, a step further than GMís offer earlier in the week to provider temporary loaner vehicles to Volt owners.

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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Just recently NHSTA has finally arrived into conclusion if Chevy Volt is safe. The investigation ended Monday in GM's favor. Though the National Highway Traffic Safety Administration said that it is safe, still the car is having a difficult time in the industry. Many Chevy dealers are declining to take more Volt hybrid electrics off of GM's hands.Resource for this article: Dealers turn down Volts even after NHTSA approval

    My opinion with this issue is that, it is not easy for the consumers to take away all their worries that fast. Of course, who would want to drive a car that was recently investigated because of the safety and fire issue? I, myself would not want it. Thinking all day if my car is safe or not.

  14. #14

    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Humans are funny like that. Would rather drive an uninvestigated car, than one investigated and found safe?

    Another funny thing is hollywood films, where car fuel tanks explode from the slightest little bumps, and yet people drive them

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    *Flashaholic* Monocrom's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Hollywood films are made up of fictional characters who have no free will of their own.
    "The World is insane. With tiny spots of sanity, here and there... Not the other way around!" - John Cleese.

  16. #16

    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    I wonder why they don't use lifepo4 cells....

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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Dashrynn: small(er) capacity

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    Quote Originally Posted by Monocrom
    Hollywood films are made up of fictional characters who have no free will of their own.
    You preach the truth.
    This is my signature. They're many like it but this one is mine..

  19. #19

    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    As someone who works at a GM Dealer, I am not impressed by the Volt. It is an overpriced vehicle that had a HUGE amount of tax dollars invested in its development, is receiving huge tax breaks at our expense to spur sales to high income purchasers, and uses technology that may never trickle down to an affordable vehicle. It is a prime example of government intervention in an attempt to sell the public something they cannot afford and at this point in time do not want. It is also a highly technical vehicles whose short term reliability has not been all that good (50% of our Volts have had significant electrical issues) and whose long term reliability (as the electronics, wiring connections, and cooling systems age) will be questionable at best. When the $55,0000 Tahoe Hybrid came out we were told that the technology would eventually be mass produced and used in less expensive vehicles. Sound familiar? It was a GREAT premise as the Hybrid Tahoe delivered a SOLID 20 MPG in city driving. Yet the technology never trickeled down. Instead GM pushed for the Volt and now the new E-Assist, which is an affordable compromise but is far from a true hybrid.

    At this point in time I do not believe that the Volt battery packs are unsafe. We have not seen issues in that area. We have seen issues in some of the subsystems necessary to support the use of that battery pack as well as some of those required to operate the vehicle. That said, I would not park one in my garage. There are other hybrids out there that are much more affordable and far less risky in the long term.
    Alan
    "Courage is being scared to death-but saddling up anyway." (John Wayne)
    CART / CERT/ ARES / RACES / EMA Weather Specialist / Skywarn

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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Chevy Volt Production has been halted.

    it always was junk and always will be junk (sure it was a technological marvel, but the underlying tech was JUNK)

    Chevy blames media for the low sales. I blame the fires.

    and also the ads before the volt came
    out of 230MPG when really it ends up being 38MPG in real world tests


    finally, they killed it
    Last edited by 127.0.0.1; 03-02-2012 at 02:04 PM.
    posted by jh333233
    Dont cheat me, im expert in using crap light

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    Flashaholic* Wrend's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Quote Originally Posted by 127.0.0.1 View Post
    ...and also the ads before the volt came
    out of 230MPG when really it ends up being 38MPG in real world tests...
    Both numbers are misleading. Unless you're driving 35+ miles or so between charges, you're not driving using gas to power the car, so MPG is a less relevant number than it is in standard ICE cars.
    Last edited by Wrend; 03-02-2012 at 05:02 PM.

  22. #22

    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    ..While a regular 10 year old corolla will get you 50mpg highway..

  23. #23
    Flashaholic* Wrend's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    ...while MPG in the Volt isn't as relevant. So, what's your point?

    ...

    By the way, 50mpg highway for the Corolla seems like a high estimate to me from what I can source.
    Last edited by Wrend; 03-02-2012 at 07:34 PM.

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    Flashaholic* Wrend's Avatar
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    Exclamation Re: Chevrolet Volt's Battery Pack re-Ignited

    Quote Originally Posted by Monocrom View Post
    . . . And that's why I will never own an electronic or hybrid car in my Lifetime.
    Because otherwise you plan to burn your garage and leaving your electric car in it without getting it checked out afterwards?

    Hopefully you are now capable of avoiding this scenario.

    Congratulations.

    ...

    PS: Here's hoping you don't burn your your garage while your gas powered car is in it in your lifetime.
    Last edited by Wrend; 03-02-2012 at 08:31 PM.

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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    There will be no one car that appears overnight that completely changes the car industry; technology will give us individual small evolutionary steps that when added up over time will increase efficiency. Hybrid is just one step, as is direct injection, reverse-flow engines, pneumatic valves, etc.

    Quote Originally Posted by shadowjk View Post
    ..While a regular 10 year old corolla will get you 50mpg highway..
    Older econo cars are in some instances quite competitive with modern hybrids on the highway, but don't compare at all with city mileage, where most commuting takes place. ~30 city mpg in that older Corolla would be entirely respectable, but not even close to a Prius' 50+ city mpg.

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    *Flashaholic* Monocrom's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Quote Originally Posted by Wrend View Post
    Congratulations.
    Thank you. I recently got my car back from the collision shop after it was involved in a fender-bender. Nothing exploded during the mild contact. I've had a garaged parking spot for the past decade. Two different models in that 10 year period. Both proven technology gas-engine only models. I sleep very soundly at night.

    It's nice relying on technology that has been time proven and tested for more decades than most drivers have been alive. But hey, feel free to roll the dice with your life if that's your choice. Stay classy.
    "The World is insane. With tiny spots of sanity, here and there... Not the other way around!" - John Cleese.

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    *Flashaholic* Monocrom's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Quote Originally Posted by StarHalo View Post
    There will be no one car that appears overnight that completely changes the car industry; technology will give us individual small evolutionary steps that when added up over time will increase efficiency. Hybrid is just one step, as is direct injection, reverse-flow engines, pneumatic valves, etc.
    Ironically, James May said it best. Nothing will revolutionize the industry if we have to go backwards in our driving habits. Drivers are used to the concept of road trips. You head out, you fuel up, and you keep going. Repeat as needed. If you have to plug your car in every night as you would an all-electric vehicle, and then carefully map out your driving route to hopefully reach another place where you can once again charge up your car; then it's a giant step backwards. And, that's if nothing goes wrong during the night to inadvertently interrupt the charging process. Otherwise you're stuck at home. Also, better hope that the charge doesn't drop down to nothing all of a sudden while you're driving around.

    I experienced both of the above at my last job as a security officer inside the giant Con-Ed complex in Astoria. There were a few times I got stuck inside those cramp, All-Electric, Toyota RAV-4 models that were sometimes issued for use on-site. Hybrid technology isn't much of an answer to the traditional engine since you have to burn fossil fuels in order to make the fuel cells. Modern-day diesel engines are cleaner burning than their older counterparts. You want fuel economy, diesel is the best way to go. You want a Neo-hippie girl to date you while pretending to save the Planet, Hybrid all the way!
    "The World is insane. With tiny spots of sanity, here and there... Not the other way around!" - John Cleese.

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    Flashaholic* Wrend's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Just trying to put things in perspective. I'm not afraid of electric cars in general because there is no rational reason to be.

    Really, the only thing about them that makes them less than viable currently is their lack of capacity for range between charges at an initially cost effective price.

    I've used unprotected Li-ion cells on a daily basis for a few years now in much less controlled scenarios and have had no issues with them in any way. Of course, I know how to properly use them. I see no reason why they can't be properly used to power electric cars.

    I'm not saying the Volt is an ideal solution (I prefer full battery powered electrics), but given that it was in a garage fire and wasn't checked out afterwards, I can't really reasonably expect it to be held at fault here.

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    *Flashaholic* StarHalo's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Quote Originally Posted by Monocrom View Post
    Nothing will revolutionize the industry if we have to go backwards in our driving habits.
    Right, and the all-electric car as it is now is not a revolution, it's just an evolutionary step that has a way to go. They're clearly not currently a replacement for a standard combustion engine car, and not for the majority of drivers, but those who sign up are helping to advance the technology and refine it. Somebody had to drive the first fuel-injected cars, first turbocharged cars, first continuously-variable transmission cars, etc, and our cars now are better for it.

  30. #30
    *Flashaholic* Monocrom's Avatar
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    Default Re: Chevrolet Volt's Battery Pack re-Ignited

    Quote Originally Posted by StarHalo View Post
    Right, and the all-electric car as it is now is not a revolution, it's just an evolutionary step that has a way to go. They're clearly not currently a replacement for a standard combustion engine car, and not for the majority of drivers, but those who sign up are helping to advance the technology and refine it. Somebody had to drive the first fuel-injected cars, first turbocharged cars, first continuously-variable transmission cars, etc, and our cars now are better for it.
    I hear what you're saying. I just honestly think the answer isn't in an all-electric set-up. I honestly don't. I can't say what is. I think that technology is just beyond the horizon. Something that hasn't been tried yet. I see an all-electric vehicle the same way that steam-powered cars used to be. In the early days of the automobile, if you wanted power, I mean sheer brute power; you went with steam power. But steam-powered cars represented a dead-end in the Family Tree of cars. We've seen it happen with lights. I still have my Night-Ops Gladius. So much potential in that one light. All those features, everything it represented . . . A dead-end in the Family Tree of flashlight evolution, as well as revolution.

    Hybrid technology is a Stop-Gap measure until something genuinely better comes along. But I see an all-electric set-up as a dead-end on the Tree.
    "The World is insane. With tiny spots of sanity, here and there... Not the other way around!" - John Cleese.

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