Device for charge equalization between battery cells for portable electronic device e.g. mobile phone, has disconnecting devices which are arranged in current paths for opening and closing connection of current paths

摘要

The device (70) has a current path for producing an electrical contact between terminals (41) of the battery cells (20), and another current path for establishing an electrical connection between terminals (40) of the battery cells. The disconnecting devices (50) are arranged in the current paths for opening and closing the connection of the current paths to limit the current in the current paths. The disconnecting device is comprised of a contactor and a relay. Independent claims are included for the following: (1) a method for charge equalization between battery cells; and (2) a method for manufacturing battery module.