baskinginthesun2000
Posts: 4
Joined: Tue Sep 01, 2020 12:17 am

Bolt = Big battery?

Tue Sep 01, 2020 1:07 am

I have been trying to find out if it is possible to use the bolt as a battery for a solar system. The idea is to connect the bolt's battery through the dc fast charging port to the inverter's battery terminals. Think the bolt's battery is around 400V and the inverter also works at 400V DC. The current draw should be 25A max, and probably a thrid to half of that as max normally.

Not trying to charge the battery, just use it for emergency use during blackouts. Though would imagine the bolt has a battery charger to charge the battery from the regenerative braking. However, a simple blocking diode should prevent charging the battery from the solar array. I could use the regular 7.2kW AC charger for that.

Would anyone know the answers to any of these doubts?

1) Would the bms prevent you from drawing power from the battery, when the car is off? I assume the bms draws power from the battery itself and would be active.

2) The High Power Distribution Module seems to connect the dc fast charging port through a contactor to the battery bus. Do you need anything special to activate the contactor?

3) If you can draw power from the port, any time limitations, like with the 12V system? Maybe current limits?

Did I miss something else?

Don't want to use the 12V system using a regular inverter for this. Wouldn't work to power the whole house. It has to be the 400V system.

SparkE
Moderator
Posts: 1145
Joined: Sun Sep 11, 2016 5:53 am
Location: SF Bay Area

Re: Bolt = Big battery?

Tue Sep 01, 2020 1:39 am

- i don't believe that the (current) CCS/SAE standard supports what you are trying to do . (The CHAdeMO std does, BTW).

AyeJay
Moderator
Posts: 49
Joined: Sun Oct 15, 2017 9:57 pm

Re: Bolt = Big battery?

Tue Sep 01, 2020 5:25 am

Nissan presented it's 'L2H' system years ago which seems to have been left to languish for now ..

https://www.greencarreports.com/news/10 ... -it-to-u-s

AJ
- 2020 Bolt EV Premium
- 1982 VW Rabbit (Caddy) Pickup

baskinginthesun2000
Posts: 4
Joined: Tue Sep 01, 2020 12:17 am

Re: Bolt = Big battery?

Tue Sep 01, 2020 5:33 am

would imagine most v2h include inverters and other hardware. I just need to connect to the battery. As long as the car doesn't put any limitations on drawing current from the battery, it probably would work.

I know that css 3.0 will allow bidirectionally, but what happens if you try to draw current from the bolt?

baskinginthesun2000
Posts: 4
Joined: Tue Sep 01, 2020 12:17 am

Re: Bolt = Big battery?

Wed Sep 02, 2020 4:32 am

Was pointed towards the faq

as a rule of thumb,pre-2021 CCS vehicleslike the Chevrolet Boltare notcurrently supported


Usually don't accept negatives at face value, since things aren't always as black or white as they say. '21 are coming out soon, so will keep my fingers crossed

However, seems my idea is right on the money. They basically are doing the same

What stationary batteries is dcbel™compatible with?dcbel™is compatible with all batteriesthat have a 400V DC nominal voltagelike the LG Chem RESU


So I guess I will need to wait a bit more. Hopefully, by then ev will be cheaper, and doing this will be easier. The bolt sounded like nice car from the engineering point of view. I'm surprised gm did such a good job with it.

BoltEV
Posts: 320
Joined: Thu Feb 01, 2018 5:58 am

Re: Bolt = Big battery?

Sun Sep 06, 2020 2:11 am

I purchased and installed the EVExtend system/inverter and have the utility of 1,000 watts of power if/when a long power outage ensues here in Los Angeles to run my refrigerator and a few LED lights.

https://www.evextend.com/Chevrolet-Bolt-Inverter-Kit.php

baskinginthesun2000
Posts: 4
Joined: Tue Sep 01, 2020 12:17 am

Re: Bolt = Big battery?

Mon Sep 07, 2020 3:59 am

BoltEV wrote:I purchased and installed the EVExtend system/inverter and have the utility of 1,000 watts of power if/when a long power outage ensues here in Los Angeles to run my refrigerator and a few LED lights.

https://www.evextend.com/Chevrolet-Bolt-Inverter-Kit.php


Thanks. Actually I'm looking at the ev as a battery for my solar inverter. Currently, my system can handle outages during midday hours but would be nice to be able to extend this to nights and low irradiance hours. Also for long durations, we had a few blackouts that lasted a few days.

summit
Posts: 39
Joined: Mon Apr 04, 2016 11:13 pm

Re: Bolt = Big battery?

Tue Sep 08, 2020 6:39 pm

It's coming soon, the FAQ says that current CCS can't support bi-direction but next generation will.

Solar PV inverter/charger V2G:

https://dcbel.ossiaco.com/

BoltEV
Posts: 320
Joined: Thu Feb 01, 2018 5:58 am

Re: Bolt = Big battery?

Wed Sep 09, 2020 7:07 pm

summit wrote:It's coming soon, the FAQ says that current CCS can't support bi-direction but next generation will.

Solar PV inverter/charger V2G:

https://dcbel.ossiaco.com/

Looks like so much versatility! Do you have any idea what this will sell for?

summit
Posts: 39
Joined: Mon Apr 04, 2016 11:13 pm

Re: Bolt = Big battery?

Fri Sep 11, 2020 1:08 am

I think between $4-5K, plus $1-2K for the Black-Out option (probably for the transfer switch etc...). The web site is not really user friendly, yet. But here's a link to their June Faq:

https://www.ossiaco.com/wp-content/uplo ... Q-v1.1.pdf

I also find this blurb on solar-PV informative:

https://www.ossiaco.com/wp-content/uplo ... e-V2.2.pdf

Solar DC grid-tie inverter runs around $2-3K, so the pricing isn't too bad considering it can do grid-tie plus V2G.

I've been using the Bolt as black-out power source, via a 12-v inverter; but haven't figured out how to prevent the Bolt from auto-shut-off after about 2 hrs. The rubber band trick for the Volt doesn't work for the Bolt. May be somebody can chime in ?

Thanks

Return to “Technical Discussions”