ACTIVE BATTERY STATE-OF-CHARGE BALANCING

Abstract: a rechargeable energy storage system includes a dc-to-dc converter operational to: receive a battery discharge power at two first local nodes; and convert the battery discharge power to a pack discharge power at two first inter-assembly nodes while in a discharge mode in response to a control signal. the dc-to-dc converter is further operational to: receive a pack charge power at the two first inter-assembly nodes; and convert the pack charge power to a battery charge power at the two first local nodes while in a charge mode. a first battery assembly has a first state-of-charge. a second battery assembly has a second state-of-charge, and operates in series with the first battery assembly. the controller is operational to generate the control signal that varies the dc-to-dc converter to balance the first state-of-charge with the second state-of-charge while in the discharge mode.

Inventor(s): Yue-Yun Wang, Lei Hao

CPC Classification: B60L58/22 (Balancing the charge of battery modules)

Search for rejections for patent application number 20250196717