A battery pack comprising a voltage bus 10, a first sub-pack 11 and a second sub-pack that comprises a plurality of modules 20, 21, 22. The battery pack is configurable into a first configuration in which the first sub-pack and the second sub-pack are connected in series across the voltage bus and the modules are connected in parallel within the second sub-pack. The battery pack is also configurable into a second configuration in which the first sub-pack and the second sub-pack are connected in series across the voltage bus and the modules are connected in series within the second sub-pack. The battery pack then switches between the first configuration and the second configuration when a voltage of the battery pack transits a first threshold. The battery pack may also comprise a third sub pack that is connected in series with the first and second sub packs in the first configuration and disconnected from the voltage bus in the second configuration.
Reconfigurable battery pack
2023-10-11
Patent
Electronic Resource
English