The VCU communicates with the BMS via the Master Module and all battery packs need at least one Master unit. The Satellites expand the capability of the Master by an additional 18 cells and 3 thermistors per additional Satellite connected. The Satellite Modules are connected to their Master via a high-speed serial interface (isoSPI) that allows additional units to be daisy chained together, adding as many Satellites as necessary for the battery pack configuration.
The BMS is implemented as two different Module types: the BMS Master and the BMS Satellite. Each Module is capable of measuring up to 18 cells and 3 temperatures (thermistors) but the Master also contains the CAN communication interface and J1772 charging specific connections needed for each battery pack.
The VCU is responsible for all BMS control logic. All setup and calibration items can be modified using the AEMCal user interface.
Unsealed Satellite Modules allow additional units to be daisy chained together to support numerous battery pack configurations
Low Profile 90 degree connector allows for ease of packaging and service when installed into a sealed battery pack
NOTE: The Unsealed BMS Satellite must be used with an AEM Vehicle Control Unit (VCU) and a BMS Master.
Unsealed Satellite Modules are connected to their Master via a high-speed serial interface (isoSPI)
Unsealed Satellite Modules allows for custom Battery Packs and integration into a sealed module
Unsealed Satellite modules are Intended for installations into sealed custom battery packs
The AEM EV Battery Management System (BMS-18) is comprised of three components:
AEM EV Unsealed Battery Management System Satellite Module for VCU
Unsealed Battery Management System Satellite
Unsealed BMS Satellite Module for VCU
Unsealed BMS Satellite Module
3. BMS-18 Satellite(s)
2. BMS-18 Master
Unsealed Battery
AEMEEVBATT
1. VCU
