baskinginthesun2000
New member
- Joined
- Aug 28, 2020
- Messages
- 7
I got the idea that a Chevy Volt might work as an emergency battery for a hybrid inverter. Have a huawei's sun2000 usl0 inverter, which uses the high voltage LG Resu battery (400V). From what I've been able to find, the Volt's battery also runs around that range. If the car has the dc charging option, the battery seems to connect directly to the charging port (though a contactor). So my guess is you should be able to use the car's battery as a backup for the inverter.
On the inverter, the battery port seems to be connected in parallel to the PV panels, and the highest voltage I've seen after almost a year is 450V, and the mode is 365V. If the inverter detects the battery, it will limit the voltage (think 390V?? don't recall the value), so it seems that the inverter should be able to draw from the car. For charging you would use the ac connection since you probably would gain little (10kW vs 7.2kW? ) for the extra complication of providing a dc-dc converter and charge limiter.
Batteries for my current set up are a bit expensive and don't need them to balance the load throughout the day. I'm interested in emergency use, and our area has experienced outages for a few days occasionally. The car battery should provide a few day's worths of energy, and during daylight hours should recharge
On the inverter, the battery port seems to be connected in parallel to the PV panels, and the highest voltage I've seen after almost a year is 450V, and the mode is 365V. If the inverter detects the battery, it will limit the voltage (think 390V?? don't recall the value), so it seems that the inverter should be able to draw from the car. For charging you would use the ac connection since you probably would gain little (10kW vs 7.2kW? ) for the extra complication of providing a dc-dc converter and charge limiter.
Batteries for my current set up are a bit expensive and don't need them to balance the load throughout the day. I'm interested in emergency use, and our area has experienced outages for a few days occasionally. The car battery should provide a few day's worths of energy, and during daylight hours should recharge