Li‐ion Battery Controller (LBC)

LBC

The Li-ion battery controller accepts the multi-message query only. In fact, the LBC transmits many groups: the first one contains lots of High Voltage battery data as SOC, currents, and voltage; the second replies with all the battery’s cells voltages in millivolt, the third and the fifth one are still unknown, the fourth contains the four battery packs temperatures, and the last one tells which cell has the shunt active. There are also two more groups: group 61, which replies with lots of CAN messages (up to 48); here we found the SOH value, and group 84 that replies with the HV battery production serial.

Group 1

• Query:
  0x79B 02 21 01 00 00 00 00 00
• Answer:
  0x7BB 10 35 61 01 FF FF FC 18
• Query (sent on 0x10 reply):
  0x79B 30 00 00 00 00 00 00 00
• Answer:

0x7BB 21 02 AF FF FF FB 62 FF
0x7BB 22 FF F0 DD 0B 1C 30 D4
0x7BB 23 95 1D 33 06 03 95 00
0x7BB 24 01 70 00 26 9A 00 0C
0x7BB 25 44 B5 00 11 0B B8 80
0x7BB 26 00 01 FF FF FB 62 FF
0x7BB 27 FF FC AA 01 AD FF FF

Group 84

Battery Serial

• Query:
  0x79B 02 21 84 00 00 00 00 00
• Answer:
  0x7BB 10 16 61 84 32 33 30 55
• Query (sent on 0x10 reply):
  0x79B 30 00 00 00 00 00 00 00
• Answer:

0x7BB 21 4B 31 31 39 32 45 30
0x7BB 22 30 31 34 38 32 20 A0
0x7BB 23 00 00 00 00 00 00 00

Formula: (554b313139324530303134383220a0).decode(’utf-8’)