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I find you lack of faith in the forth dithturbing. -- Darse ("Darth") Vader

tech / sci.electronics.design / Re: EV Battery Bank bad design

EV Battery Bank bad design

<t70110$g83$1@gioia.aioe.org>

https://www.novabbs.com/tech/article-flat.php?id=97890&group=sci.electronics.design#97890

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From: Decadent...@decadence.org
Newsgroups: sci.electronics.design
Subject: EV Battery Bank bad design
Date: Sun, 29 May 2022 14:46:57 -0000 (UTC)
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by: Decadent...@decadence.org - Sun, 29 May 2022 14:46 UTC

This is way worse than any electric car situation could ever be...

<https://www.youtube.com/watch?v=5r-yN8SugWM>

Re: EV Battery Bank bad design

<t72rp3$1r4h$1@gioia.aioe.org>

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From: Decadent...@decadence.org
Newsgroups: sci.electronics.design
Subject: Re: EV Battery Bank bad design
Date: Mon, 30 May 2022 16:35:47 -0000 (UTC)
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by: Decadent...@decadence.org - Mon, 30 May 2022 16:35 UTC

DecadentLinuxUserNumeroUno@decadence.org wrote in news:t70110$g83$1
@gioia.aioe.org:

> This is way worse than any electric car situation could ever be...
>
> <https://www.youtube.com/watch?v=5r-yN8SugWM>
>

I cannot believe that all of you EV folks did not comment on this.

Re: EV Battery Bank bad design

<d0a1ec1c-1490-4b34-8c69-6c6fc3f5672dn@googlegroups.com>

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Subject: Re: EV Battery Bank bad design
From: gnuarm.d...@gmail.com (Ricky)
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by: Ricky - Mon, 30 May 2022 16:44 UTC

On Monday, May 30, 2022 at 12:35:54 PM UTC-4, DecadentLinux...@decadence.org wrote:
> DecadentLinux...@decadence.org wrote in news:t70110$g83$1
> @gioia.aioe.org:
> > This is way worse than any electric car situation could ever be...
> >
> > <https://www.youtube.com/watch?v=5r-yN8SugWM>
> >
> I cannot believe that all of you EV folks did not comment on this.

Would you like to see images of gasoline vehicles burning? What is your point? They put batteries in a bus and it burned up. What's your point?

Rick C.

- Get 1,000 miles of free Supercharging
- Tesla referral code - https://ts.la/richard11209

Re: EV Battery Bank bad design

<t72u7b$130q$1@gioia.aioe.org>

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From: pcdhSpam...@electrooptical.net (Phil Hobbs)
Newsgroups: sci.electronics.design
Subject: Re: EV Battery Bank bad design
Date: Mon, 30 May 2022 13:17:29 -0400
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by: Phil Hobbs - Mon, 30 May 2022 17:17 UTC

DecadentLinuxUserNumeroUno@decadence.org wrote:
> DecadentLinuxUserNumeroUno@decadence.org wrote in news:t70110$g83$1
> @gioia.aioe.org:
>
>> This is way worse than any electric car situation could ever be...
>>
>> <https://www.youtube.com/watch?v=5r-yN8SugWM>
>>
>
> I cannot believe that all of you EV folks did not comment on this.
>

I never look at random youtube links, unless they're accompanied by some
rationale for doing that, e.g. "A UFO photobombs an episode of <scotty
kilmer or Dan Carlin or somebody> about 8 minutes in."

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

Re: EV Battery Bank bad design

<t74r2m$4kc$1@gioia.aioe.org>

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From: Decadent...@decadence.org
Newsgroups: sci.electronics.design
Subject: Re: EV Battery Bank bad design
Date: Tue, 31 May 2022 10:36:07 -0000 (UTC)
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by: Decadent...@decadence.org - Tue, 31 May 2022 10:36 UTC

Ricky <gnuarm.deletethisbit@gmail.com> wrote in
news:d0a1ec1c-1490-4b34-8c69-6c6fc3f5672dn@googlegroups.com:

> On Monday, May 30, 2022 at 12:35:54 PM UTC-4,
> DecadentLinux...@decadence.org wrote:
>> DecadentLinux...@decadence.org wrote in news:t70110$g83$1
>> @gioia.aioe.org:
>> > This is way worse than any electric car situation could ever
>> > be...
>> >
>> > <https://www.youtube.com/watch?v=5r-yN8SugWM>
>> >
>> I cannot believe that all of you EV folks did not comment on
>> this.
>
> Would you like to see images of gasoline vehicles burning? What
> is your point? They put batteries in a bus and it burned up.
> What's your point?
>

WTF is the point of your stupid response?

Re: EV Battery Bank bad design

<jfmf32Fd96hU1@mid.individual.net>

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From: syl...@email.invalid (Sylvia Else)
Newsgroups: sci.electronics.design
Subject: Re: EV Battery Bank bad design
Date: Tue, 31 May 2022 22:13:22 +1000
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by: Sylvia Else - Tue, 31 May 2022 12:13 UTC

On 30-May-22 12:46 am, DecadentLinuxUserNumeroUno@decadence.org wrote:
> This is way worse than any electric car situation could ever be...
>
> <https://www.youtube.com/watch?v=5r-yN8SugWM>

Any energy containing system has the potential to release that energy in
an uncontrolled way if it is abused, or incorrectly manufactured.

What makes you think this one had a bad design?

Sylvia.

Re: EV Battery Bank bad design

<t753fg$8hb$1@gioia.aioe.org>

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From: Decadent...@decadence.org
Newsgroups: sci.electronics.design
Subject: Re: EV Battery Bank bad design
Date: Tue, 31 May 2022 12:59:28 -0000 (UTC)
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by: Decadent...@decadence.org - Tue, 31 May 2022 12:59 UTC

Sylvia Else <sylvia@email.invalid> wrote in
news:jfmf32Fd96hU1@mid.individual.net:

> On 30-May-22 12:46 am, DecadentLinuxUserNumeroUno@decadence.org
> wrote:
>> This is way worse than any electric car situation could ever
>> be...
>>
>> <https://www.youtube.com/watch?v=5r-yN8SugWM>
>
> Any energy containing system has the potential to release that
> energy in an uncontrolled way if it is abused, or incorrectly
> manufactured.
>
> What makes you think this one had a bad design?
>
> Sylvia.
>

Each "cell" in the battery at this size level should have had
monitoring circuitry to cut it out of an overload condition.
So the overload should have "sparked" a massive shutdown, not a massive
meltdown.

Re: EV Battery Bank bad design

<815f8dd8-83cd-467c-a3b5-6b3c638ae5dcn@googlegroups.com>

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Subject: Re: EV Battery Bank bad design
From: edward.m...@gmail.com (Ed Lee)
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by: Ed Lee - Tue, 31 May 2022 14:27 UTC

On Tuesday, May 31, 2022 at 5:59:37 AM UTC-7, DecadentLinux...@decadence.org wrote:
> Sylvia Else <syl...@email.invalid> wrote in
> news:jfmf32...@mid.individual.net:
> > On 30-May-22 12:46 am, DecadentLinux...@decadence.org
> > wrote:
> >> This is way worse than any electric car situation could ever
> >> be...
> >>
> >> <https://www.youtube.com/watch?v=5r-yN8SugWM>
> >
> > Any energy containing system has the potential to release that
> > energy in an uncontrolled way if it is abused, or incorrectly
> > manufactured.
> >
> > What makes you think this one had a bad design?
> >
> > Sylvia.
> >
> Each "cell" in the battery at this size level should have had
> monitoring circuitry to cut it out of an overload condition.
> So the overload should have "sparked" a massive shutdown, not a massive
> meltdown.

We don't really know this situation. In case of the Bolt, manufacturing deflect causes short of a powerful cell. Cutting it off won't help. Smaller cells are safer in this regard. 18650 can be shorted and destroyed, but not exploded.

Re: EV Battery Bank bad design

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Subject: Re: EV Battery Bank bad design
From: gnuarm.d...@gmail.com (Ricky)
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by: Ricky - Tue, 31 May 2022 15:15 UTC

On Tuesday, May 31, 2022 at 10:27:30 AM UTC-4, Ed Lee wrote:
> On Tuesday, May 31, 2022 at 5:59:37 AM UTC-7, DecadentLinux...@decadence.org wrote:
> > Sylvia Else <syl...@email.invalid> wrote in
> > news:jfmf32...@mid.individual.net:
> > > On 30-May-22 12:46 am, DecadentLinux...@decadence.org
> > > wrote:
> > >> This is way worse than any electric car situation could ever
> > >> be...
> > >>
> > >> <https://www.youtube.com/watch?v=5r-yN8SugWM>
> > >
> > > Any energy containing system has the potential to release that
> > > energy in an uncontrolled way if it is abused, or incorrectly
> > > manufactured.
> > >
> > > What makes you think this one had a bad design?
> > >
> > > Sylvia.
> > >
> > Each "cell" in the battery at this size level should have had
> > monitoring circuitry to cut it out of an overload condition.
> > So the overload should have "sparked" a massive shutdown, not a massive
> > meltdown.
> We don't really know this situation. In case of the Bolt, manufacturing deflect causes short of a powerful cell. Cutting it off won't help. Smaller cells are safer in this regard. 18650 can be shorted and destroyed, but not exploded.

Battery makers are trying to cut costs, and one way to do that is through larger cell sizes. I think VW, or BMW, not sure which, uses a cell about the size of a cigar box. I believe this also lets them give the cell more integrity without lowering the specific energy.

Rick C.

+ Get 1,000 miles of free Supercharging
+ Tesla referral code - https://ts.la/richard11209

Re: EV Battery Bank bad design

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Subject: Re: EV Battery Bank bad design
From: edward.m...@gmail.com (Ed Lee)
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by: Ed Lee - Tue, 31 May 2022 16:24 UTC

On Tuesday, May 31, 2022 at 8:15:31 AM UTC-7, Ricky wrote:
> On Tuesday, May 31, 2022 at 10:27:30 AM UTC-4, Ed Lee wrote:
> > On Tuesday, May 31, 2022 at 5:59:37 AM UTC-7, DecadentLinux...@decadence.org wrote:
> > > Sylvia Else <syl...@email.invalid> wrote in
> > > news:jfmf32...@mid.individual.net:
> > > > On 30-May-22 12:46 am, DecadentLinux...@decadence.org
> > > > wrote:
> > > >> This is way worse than any electric car situation could ever
> > > >> be...
> > > >>
> > > >> <https://www.youtube.com/watch?v=5r-yN8SugWM>
> > > >
> > > > Any energy containing system has the potential to release that
> > > > energy in an uncontrolled way if it is abused, or incorrectly
> > > > manufactured.
> > > >
> > > > What makes you think this one had a bad design?
> > > >
> > > > Sylvia.
> > > >
> > > Each "cell" in the battery at this size level should have had
> > > monitoring circuitry to cut it out of an overload condition.
> > > So the overload should have "sparked" a massive shutdown, not a massive
> > > meltdown.
> > We don't really know this situation. In case of the Bolt, manufacturing deflect causes short of a powerful cell. Cutting it off won't help. Smaller cells are safer in this regard. 18650 can be shorted and destroyed, but not exploded.
> Battery makers are trying to cut costs, and one way to do that is through larger cell sizes. I think VW, or BMW, not sure which, uses a cell about the size of a cigar box. I believe this also lets them give the cell more integrity without lowering the specific energy.

GM/Bolt cells are long thin rectangular pouch; so, in theory, should have better heat dissipation, other than the manufacturing defect. We have to give them credit for doing the right thing to recall (vehicle), replace (battery) and retool (factory). Let's wait and see.

Re: EV Battery Bank bad design

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Subject: Re: EV Battery Bank bad design
From: gnuarm.d...@gmail.com (Ricky)
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by: Ricky - Wed, 1 Jun 2022 02:07 UTC

On Tuesday, May 31, 2022 at 12:25:01 PM UTC-4, Ed Lee wrote:
> On Tuesday, May 31, 2022 at 8:15:31 AM UTC-7, Ricky wrote:
> > On Tuesday, May 31, 2022 at 10:27:30 AM UTC-4, Ed Lee wrote:
> > > On Tuesday, May 31, 2022 at 5:59:37 AM UTC-7, DecadentLinux...@decadence.org wrote:
> > > > Sylvia Else <syl...@email.invalid> wrote in
> > > > news:jfmf32...@mid.individual.net:
> > > > > On 30-May-22 12:46 am, DecadentLinux...@decadence.org
> > > > > wrote:
> > > > >> This is way worse than any electric car situation could ever
> > > > >> be...
> > > > >>
> > > > >> <https://www.youtube.com/watch?v=5r-yN8SugWM>
> > > > >
> > > > > Any energy containing system has the potential to release that
> > > > > energy in an uncontrolled way if it is abused, or incorrectly
> > > > > manufactured.
> > > > >
> > > > > What makes you think this one had a bad design?
> > > > >
> > > > > Sylvia.
> > > > >
> > > > Each "cell" in the battery at this size level should have had
> > > > monitoring circuitry to cut it out of an overload condition.
> > > > So the overload should have "sparked" a massive shutdown, not a massive
> > > > meltdown.
> > > We don't really know this situation. In case of the Bolt, manufacturing deflect causes short of a powerful cell. Cutting it off won't help. Smaller cells are safer in this regard. 18650 can be shorted and destroyed, but not exploded.
> > Battery makers are trying to cut costs, and one way to do that is through larger cell sizes. I think VW, or BMW, not sure which, uses a cell about the size of a cigar box. I believe this also lets them give the cell more integrity without lowering the specific energy.
> GM/Bolt cells are long thin rectangular pouch; so, in theory, should have better heat dissipation, other than the manufacturing defect. We have to give them credit for doing the right thing to recall (vehicle), replace (battery) and retool (factory). Let's wait and see.

Oh, I can barely wait! It's like trying to get to sleep on the night before Christmas!

Rick C.

-- Get 1,000 miles of free Supercharging
-- Tesla referral code - https://ts.la/richard11209

Subject	Author
EV Battery Bank bad design	DecadentLinuxUserNumeroUno
Re: EV Battery Bank bad design	DecadentLinuxUserNumeroUno
Re: EV Battery Bank bad design	Ricky
Re: EV Battery Bank bad design	DecadentLinuxUserNumeroUno
Re: EV Battery Bank bad design	Phil Hobbs
Re: EV Battery Bank bad design	Sylvia Else
Re: EV Battery Bank bad design	DecadentLinuxUserNumeroUno
Re: EV Battery Bank bad design	Ed Lee
Re: EV Battery Bank bad design	Ricky
Re: EV Battery Bank bad design	Ed Lee
Re: EV Battery Bank bad design	Ricky