The Tesla Model S Battery Module features it's own proprietary Battery Management System board that reports the voltage of each cell in the module, temperature of each module terminal, and can actively balance each cell in the module. But it uses a very proprietary serial communications scheme to report this to the main BMS board in the Tesla Battery Pack.
We have reverse engineered this scheme and developed a specifically designed shield to communicate with it, along with a series of cable harnesses to connect to the batrtery modules.
This shield mounts on our EVTVDue microcontroller to provide an embedded system to control and monitor up to 62 individual battery modules.
Beyond voltage and temperature monitoring and balancing, this controller has the capability to operate two Gigavac contactors to connect your system but more importantly, to DISCONNECT it if any cell goes beyond voltage or temperature limits YOU set. And it does much more, like control external MPPT charge controllers and heating or cooling. It also provides CAN ports to communicate with your other equipment or support inverters such as the Sunny Island 6048.
We've gone to some lengths to develop a complete software solution you can configure and observe with a laptop computer and USB connection using simple ASCII text commands.
Comes with EVTV Due Microcontroller and shield with preloaded software.
84MHz Arduino Due compatible controller.
Two CAN ports.
Four Isolated switched ground control outputs.
Four isolated 12v signal inputs
All signals necessary to control Module BMS boards - up to 62 of them.
Extra 5v onboard power supply to power up to 62 BMS boards.
Sturdy 20 pin VAL-U-LOK connector
We've gone to some lengths to develop a complete software solution you can configure and observe with a laptop computer and USB connection using simple ASCII text commands. But this solution requires a certain set of other auxiliary componentts to operate. This kit contains the very BASIC minimal system required to satisfy the software.
Controller Kit for Tesla Battery Modules User Manual
2 GIGAVAC GX14BAB contactors with aux contacts.
1 LEM CAB Current Sensor for CAN.
1. 25 ohm 50watt precharge resistor.
1. Universal Wiring harness
1 ON/OFF switch
1 RED LED
1 GREEN LED
Tesla Battery Module Controller
Current Software Update Version 1.17
Beta Software Update Version 1.25