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Ampera‐e 64 kWh

GM BEV2 platform~

The 60-66kWh battery in the GM BEV2 platform can be found in the following vehicles.

  • Opel Ampera-E (2017-2021)
  • Chevrolet Bolt (2016-2023)

2020+ models are 64 KWh, earlier are 57 kWh.

Software configuration~

For this battery type, use the option called "Chevrolet Bolt EV/Opel Ampera-E" under the "Battery Protocol" setting.

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Also remember to configure the allowed charging power, since we do not read this value via CAN.

The battery uses 12V controlled contactors, so use Contactor Control via GPIO if you want Battery-Emulator to also control the contactors via GPIO.

image

One user reported using 3xf this type of relay with the LilyGo hardware.

Wiring diagrams~

Connect the low voltage wiring like this:

X358 connector (black)

  • Pin 1 & 2 should be grounded (if pin 1 has 5V we lock the battery?)
  • Pin 3 12v+ positive contactor
  • Pin 4 12v+ negative contactor
  • Pin 5 12v+ positive contactor for aux connector
  • Pin 7 12v+ precharge
  • Pin 8 is coolant temp, pin 9 is ref. to pin 8.
  • Pin 10 to ground

X357 connector (gray)

  • Pin 1 fused with 10A (+12V)
  • Pin 2 we wake up the sensors (+12V)
  • Pin 3 & 4 relevant CAN H/L (?)
  • Pin 5 & 6 relevant CAN H/L (?)
  • Pin 7 & 8 relevant CAN H/L (?)
  • Pin 9 is blocking ignition if we feed 5V
  • Pin 10 wake up BMS (+12V)
  • Pin 11 wake up communication (+12V)
  • Pin 12 to ground

All three CAN's should be connected to BE device.

The following diagrams will help you to connect to the CAN buses on the Opel/Chevy batteries:

NOTE

These batteries have multiple CAN buses that needs to be jumpered together to form one large CAN bus the resistor on the board must be removed.

Example, development environment with contactor control via GPIO, and all 3x CAN buses connected together as one single bus

image

AC charging DC charging Battery heating temperature control

High voltage cable connections Activating serial data Activating serial data over CAN bus Interlock loop High voltage bus management Switching on the CAN bus Contactor high voltage control 1 Contactor high voltage control 2 Negative contactor Positive contactor Hi speed 1 Hi speed 2 HV battery supply and ground 2 HV battery supply and ground Connector X357 OEM 33472-1259 Service Connector 19333239

  • X357 x357 X357 pin positions

X358 X358

X358 pin pos

I had connectors but these fit also, one needs to modify by yourself.

Disconnect switch 24281696 24288304 24291219 or latest part number 24294004

Contactors must be connected with the emulator via the GPIO pins: Contactor control via GPIO pins

Please note that the precharge contactor is placed in the negative line of battery. To make precharge work the positive contactor must close before precharge contactor. Workaround: Swap Positive and negative control-lines to relays.

CAUTION

Working with high voltage is dangerous. Always follow local laws and regulations regarding high voltage work. If you are unsure about the rules in your country, consult a licensed electrician for more information.