Hi everyone,
In this thread I will try to share my experience with these new HV hybrid inverters and EV batteries working together as energy storage system.
I've been planing to build a small PV system for a long time. A hybrid system with big battery
I was looking for an used EV batteries for some time and had a chance to get a battery form a Chevy Volt, year 2013. My first plan was to use a 48V hybrid inverter, but the reconfiguration of a Chevy battery is not an easy task. So I've decided to go with a HV hybrid inverter. These machines can work with batteries in the range 100-450VDC, but there is a limited selection of batteries. And communication protocols between the inverter and the battery are closed and proprietary. But I took the challenge and after two months of mounting, wiring, coding and hacking I have a working system.
It’s based on Goodwe GW6000-EH with two modules from a Chevy battery (30S+24S with nominal voltage of 202V). Cells monitoring is done via an original BMS (BICM modules). They are connected via CAN bus to a SBC (Raspberry Pi). There is a second CAN bus connected to dedicated port of the inverter. A small program that runs on Raspberry translates the information form battery BMS in format which can be understood by inverter. That way the inverter is happy and knows the most important parameters of the battery. (SOC, charge voltage and current and etc.). The SBC is an overkill, but it makes debugging easier. I’m planning to replace it with dedicated controller on later stage (may be SimpBMS).
The inverter has many configuration options and I’m impressed by the build quality, but more on that later.
The project is still a WIP and there are many things to improve. But I can say for sure that the system works as expected.
I want to thank the community for the valuable information that found on the net regarding various aspects of the project.
P.S
Attached picture of inverter
In this thread I will try to share my experience with these new HV hybrid inverters and EV batteries working together as energy storage system.
I've been planing to build a small PV system for a long time. A hybrid system with big battery
I was looking for an used EV batteries for some time and had a chance to get a battery form a Chevy Volt, year 2013. My first plan was to use a 48V hybrid inverter, but the reconfiguration of a Chevy battery is not an easy task. So I've decided to go with a HV hybrid inverter. These machines can work with batteries in the range 100-450VDC, but there is a limited selection of batteries. And communication protocols between the inverter and the battery are closed and proprietary. But I took the challenge and after two months of mounting, wiring, coding and hacking I have a working system.
It’s based on Goodwe GW6000-EH with two modules from a Chevy battery (30S+24S with nominal voltage of 202V). Cells monitoring is done via an original BMS (BICM modules). They are connected via CAN bus to a SBC (Raspberry Pi). There is a second CAN bus connected to dedicated port of the inverter. A small program that runs on Raspberry translates the information form battery BMS in format which can be understood by inverter. That way the inverter is happy and knows the most important parameters of the battery. (SOC, charge voltage and current and etc.). The SBC is an overkill, but it makes debugging easier. I’m planning to replace it with dedicated controller on later stage (may be SimpBMS).
The inverter has many configuration options and I’m impressed by the build quality, but more on that later.
The project is still a WIP and there are many things to improve. But I can say for sure that the system works as expected.
I want to thank the community for the valuable information that found on the net regarding various aspects of the project.
P.S
Attached picture of inverter
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