What kind of battery does the Chevy Volt use and other ???'s

Batteries, Chargers, and Battery Management Systems.
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sangesf   10 kW

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What kind of battery does the Chevy Volt use and other ???'s

Post by sangesf » Sep 25 2011 3:13pm

I see they installed a chevy volt charging station or two in my local area..

Was wondering if there is a way to adapt a charger plug from whatever voltage it supplies to a 72v lifepo4 setup IF it's possible.

The Mighty Volt   10 MW

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Re: What kind of battery does the Chevy Volt use and other ?

Post by The Mighty Volt » Sep 25 2011 3:55pm

A123 10Ah cells.

Google A123 AHR32113

mvly   10 kW

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Re: What kind of battery does the Chevy Volt use and other ?

Post by mvly » Sep 25 2011 4:03pm

I dont know if they will let you charge your ebike using their charging station. You kight kill something in their charger or might damage your battery.

Good luck in this venture.

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Re: What kind of battery does the Chevy Volt use and other ?

Post by sangesf » Sep 25 2011 4:37pm

mvly wrote:I dont know if they will let you charge your ebike using their charging station. You kight kill something in their charger or might damage your battery.

Good luck in this venture.
Oh it's not free (you need a CC), but was wondering what the charging voltage and amperage was, and if it was possible to setup some kind of Adapter/step down rig to work with 72v.

I know about 30 miles south of me, there ARE a couple of FREE ones, was curious if I could figure out a rig like I just mentioned. (Apparently the charging "plug" is the same on all these units from what I've read in the papers about these specific charging stations.. Just no mention of voltage or amps)

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Re: What kind of battery does the Chevy Volt use and other ?

Post by jdb » Sep 25 2011 9:39pm

The connector is called SAE J1772. There are a couple of competing standards, but in the US for the next few years, I think J1772 will dominate. It supplies either 120VAC or 240VAC. There is a signaling protocol between the car and the charging station whose purpose is to communicate the charging current limit to the car, and communicate that there is a car present to the station. The station has a contactor in it that is normally open, even on the free versions. There is no negotiation of the voltage - the car must be capable of rectifying 240VAC. No, you cannot directly hook that cable into your bike battery pack, but you may be able to rig up a jig that feeds your standard charger with the J1772 connector.

I got one of the EE's to talk about the protocol at a local plug-in vehicle conference. It is a variable-pullup open-collector PWM. I have not confirmed the details of the following with any official source, I am just recalling from memory what we discussed on the conference floor.

Initial Condition: station provides 12V DC on the signal.
user plugs into the car
Car pulls down the signal to 9V
Station provides a PWM at 9V. The duty cycle is linearly proportional to the current limit. I don't know what the scale factor is, I didn't get it from him.
Car pulls down to 6V, station continues PWM at the new voltage.
Station closes contactor.

Could be worse. I certainly don't have any complaints. Just look at printer ink cartridges ;)


Edit: Found a good source, with much more detail.

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neptronix   100 GW

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Re: What kind of battery does the Chevy Volt use and other ?

Post by neptronix » Sep 25 2011 11:26pm

They don't use A123.. they use some form of LG polymer cells.

Unless they have changed the formula since they launched the car.
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

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Re: What kind of battery does the Chevy Volt use and other ?

Post by The Mighty Volt » Sep 25 2011 11:27pm

neptronix wrote:They don't use A123.. they use some form of LG polymer cells.

Unless they have changed the formula since they launched the car.

So who was using the AHR;s??? :?:

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neptronix   100 GW

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Re: What kind of battery does the Chevy Volt use and other ?

Post by neptronix » Sep 25 2011 11:33pm

Not sure. GM considered A123 but didn't go with them.
In October 2008 General Motors chose CPI (LG Chemical) to provide the battery systems for the first production version of the Volt.
http://en.wikipedia.org/wiki/Chevrolet_ ... tion_model
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500.
The new all-arounder: Leafmotor 1500w @ 4kW on a Turner O2 full suspension.
The monster scooter: 20" eZee on a Cannondale Semi Recumbent.
Whipper-snapper: ? on a lightweight BikeE Semi Recumbent

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Re: What kind of battery does the Chevy Volt use and other ?

Post by The Mighty Volt » Sep 25 2011 11:43pm

neptronix wrote:Not sure. GM considered A123 but didn't go with them.
In October 2008 General Motors chose CPI (LG Chemical) to provide the battery systems for the first production version of the Volt.
http://en.wikipedia.org/wiki/Chevrolet_ ... tion_model

Ahhhhhhhhhhhh, cheers, thanks. :D

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neptronix   100 GW

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Re: What kind of battery does the Chevy Volt use and other ?

Post by neptronix » Sep 25 2011 11:59pm

No prob. Very common misconception. Pass the info along :)
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500.
The new all-arounder: Leafmotor 1500w @ 4kW on a Turner O2 full suspension.
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Re: What kind of battery does the Chevy Volt use and other ?

Post by The Mighty Volt » Sep 26 2011 12:01am

neptronix wrote:No prob. Very common misconception. Pass the info along :)
8) Will do thanks,

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