Tom-evnut/AmperaBattery

Information on using the Chevy Volt / Opel Ampera Battery BMS

AmperaBattery

Information on using the Gen 1 (2011-2015) Chevy Volt / Opel Ampera Battery BMS

Original Contributors:

Tom de Bree, Damian Maguire

Further contributions by:

• Liam O'Brien
• swoozle (diyelectriccar.com)
• jontscott (diyelectriccar.com)

Forum Threads

• https://www.diyelectriccar.com/forums/showthread.php/2012-chevy-volt-battery-93101p59.html
• https://www.diyelectriccar.com/forums/showthread.php/attempting-hack-chevy-volt-drivetrain-107946p6.html
• http://electricgokart36v.blogspot.com/2017/06/re-using-chevy-volt-oem-bms-for-ev.html

Software Requirements

Arduino Libraries

https://github.com/pedvide/ADC https://github.com/collin80/FlexCAN_Library https://github.com/JonHub/Filters

Communications with the BECM (Battery Energy Control Module) 500kbps CAN bus

Connector X1 on the BECM K16

• 1 - Black - Ground
• 2 - Red - 12V
• 3 - White/Black - CAN_Low
• 4 - Light Blue - CAN_High
• 9 - Black - Ground
• 14 - Brown/Red - 12V
• 15 - Orange/Yellow - 12V
• 16 - Light Green/Light Blue - 12V

This pin arrangement sets the Accessory Wake-Up Serial and Communication Enable lines high, and causes the same data you would see on the cars can bus to be spit out onto CAN lines 3 and 4.

Communications with the module slave boards

via the 125kbps Internal Network CAN bus

Connector X2 on the BECM K16 (see volt-pack-hookup.jpg) Pin numbering marked on the connector shell

• 9 = 5V
• 10 = Ground
• 11 = CAN_Low
• 12 = CAN_High