These are the main building blocks of MEB:
The module with the batteries is the biggest and heaviest part of the platform. It is made of a massive aluminium frame that houses the battery cell modules. The unit basically forms the car's floor and its attachment to the body (which remains monocoque) makes the car more structurally robust. The floor-mounted battery offers variability: the housing has two possible dimensions.
As many as twelve battery modules, each containing 24 cells, can be installed in the housing. That gives rise to a battery weighing roughly 493 kilograms and with a total capacity of 82 kWh, a net 77 kWh of which can be used to propel the car. A medium-sized battery weighs 376 kilograms and contains nine modules with a total capacity of 62 kWh (net capacity of 58 kWh). The smallest battery has eight basic modules, weighs 345 kilograms and offers a capacity of 55 kWh (52 kWh net). The design also features a cooling system, a battery management system and, of course, the necessary connectors.
Electronic controls and charging
Needless to say, the battery needs to be charged, which is why the MEB platform features a standardised technical solution for charging and the necessary performance management electronics, which control both charging and the subsequent transfer of power to the powertrain. The system supports charging with either alternating current or direct current.