MEB Batteries: Difference between revisions
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[[File:MEB Battery modules.jpg|thumb|MEB Battery modules]] | [[File:MEB Battery modules.jpg|thumb|MEB Battery modules]] | ||
[[File:MEB communication connector.jpg|thumb|MEB communication connector]] | [[File:MEB communication connector.jpg|thumb|MEB communication connector]] | ||
== Overview == | |||
Volkswagen have specified a standard module that always has the same dimensions (590x225x110mm) and comes in 3P8S (82 kWh batteries) and 2P12S (48, 55, and 62 kWh) flavours. Each module has an energy content of 6.85 kWh. | Volkswagen have specified a standard module that always has the same dimensions (590x225x110mm) and comes in 3P8S (82 kWh batteries) and 2P12S (48, 55, and 62 kWh) flavours. Each module has an energy content of 6.85 kWh. | ||
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There is also a HV controller that performs the high level BMS calculations, controls the contactors and various other tasks but its protocol has not been reverse engineered. | There is also a HV controller that performs the high level BMS calculations, controls the contactors and various other tasks but its protocol has not been reverse engineered. | ||
== Module Connections == | |||
* Battery terminals: M6 | |||
* BMS connectors: restricted TE part, however, the harness is available from VW (0Z1 971 690 for 12S modules, 8S may be different). If you connect 8S cable without keying shroud to a 12S module - 50/50 you will blow fuses. Disassemble the cable first. [https://www.evcreate.com/using-volkswagen-meb-battery-modules/ Pinouts and specs] | |||
* Both 8S and 12S modules have inline fuses for cell taps - 1206 750mA. CATL module fuses are accessible. LG [https://openinverter.org/forum/viewtopic.php?p=80466#p80466 requires cutting the module open] | |||
[[Category:VAG]] [[Category:Battery]] | [[Category:VAG]] [[Category:Battery]] | ||
Latest revision as of 20:16, 5 March 2025
Overview
Volkswagen have specified a standard module that always has the same dimensions (590x225x110mm) and comes in 3P8S (82 kWh batteries) and 2P12S (48, 55, and 62 kWh) flavours. Each module has an energy content of 6.85 kWh.
Forum thread: https://openinverter.org/forum/viewtopic.php?t=1948
It comes along with 4 relays where 2 make the connection to the drive train and the other 2 make the connection to the quick charge port. It uses a varying number of module units that measure voltage and module temperature and execute balancing commands with about 100 mA of balancing current. The CAN protocol of these modules has been reverse engineered by Tom de Bree and a compact high level implementation was done by Johannes.
There is also a HV controller that performs the high level BMS calculations, controls the contactors and various other tasks but its protocol has not been reverse engineered.
Module Connections
- Battery terminals: M6
- BMS connectors: restricted TE part, however, the harness is available from VW (0Z1 971 690 for 12S modules, 8S may be different). If you connect 8S cable without keying shroud to a 12S module - 50/50 you will blow fuses. Disassemble the cable first. Pinouts and specs
- Both 8S and 12S modules have inline fuses for cell taps - 1206 750mA. CATL module fuses are accessible. LG requires cutting the module open