Patent ID: 9496730
Filing Date: 2016-11-15
CPC Classification: B60L,G01R,H01M,H02J,Y02E,Y02T

Claim Text:
1. A battery management system for a battery assembly of an electric vehicle, the battery assembly including a plurality of battery strings connected in parallel, wherein (a) each battery string includes a plurality of battery packs, (b) each battery pack includes a plurality of battery modules packaged together in an enclosure, and (c) each battery module includes multiple battery cells packaged together in a module housing, comprising: a module control unit associated with each battery module, wherein the module control unit is a printed circuit board attached directly to each battery module, and positioned within the module housing of the battery module, wherein the module control unit associated with each battery module is separate from the module control unit associated with another battery module, and wherein each module control unit is configured to detect at least a voltage, a current, a humidity, and a temperature of a plurality of battery cells of the corresponding battery module; a Serial Peripheral Interface (SPI) isolation board attached to each module control unit; and a pack control unit associated with each battery pack, wherein each pack control unit is configured to perform cell balancing of the battery cells of the corresponding battery pack based on the voltages and temperatures detected by the module control units of the battery pack,