Secondary battery pack

摘要

A secondary battery pack is described that is rechargeable and has a large capacity. The secondary pack has multiple battery units and at least one controller. Each battery unit of the battery pack includes a cell unit and a cell balancing system. In one embodiment, the cell balancing system has at least three detachable connections for connecting the cell balancing system to the cell unit, the controller or to other cell balancing units. The connections allow the cell balancing systems to be detached from the battery units and reused.

主权项

1. A battery pack comprising:
at least one battery unit; and a controller for controlling the operation of the at least one battery unit, wherein the at least one battery unit comprises:
a cell unit comprising a plurality of cells; anda cell balancing system for balancing the voltage among the plurality of cells, the cell balancing system comprising:a first connector for connecting the cell balancing system to a cell unit of a first battery unit;a second connector for connecting the cell balancing system to at least one of the controller or a second battery unit; anda third connector for connecting the cell balancing system to a third battery unit or to the controller, wherein the first, second and third connectors are configured to allow the cell balancing system to be physically removable from the at least one battery unit.