US Patent 10315500 Electrical energy storage for a motor vehicle

An electrical energy storage for a motor vehicle may include a plurality of main cell modules, each having a plurality of accumulator cells. The plurality of accumulator cells may be electrically contacted with one another to form a main power supply network. The plurality of main cell modules may be arranged in a main housing. An emergency cell module may include a plurality of accumulator cells. The plurality of accumulator cells of the emergency cell module may be electrically contacted and arranged in a separate emergency housing.