A battery pack comprising a voltage bus 10, a first sub-pack 11 and a second sub-pack 12. The second sub-pack comprises a plurality of modules 20, 21. The battery pack is configurable into a first configuration in which the first sub-pack and the second sub-pack are connected in parallel across the voltage bus and the modules are connected in parallel within the second sub-pack (7a), 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 parallel within the second sub-pack (7b) 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 be configurable into a third configuration where the first sub pack and second sub pack are in series, and the modules in the second sub pack are also in series.
Reconfigurable battery pack
01.11.2023
Patent
Elektronische Ressource
Englisch