Back to results
US 2023/0144441 A1Published application
A battery pack cell state of charge balancing system
AssigneeFuel Cell Technology Sweden AB
InventorSebastian WEBER
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeFuel Cell Technology Sweden AB
InventorSebastian WEBER
Estimating the term…
Described herein is a battery pack cell state of charge balancing system (1). A battery pack (2) of the system comprises a plurality of serially connected battery pack cells (BAT1-BATn), each of which (BATx) comprises one or more battery cells connected in parallel. For each respective battery pack cell (BATx) there is a set of serially connected fuel cells (FCx) at battery pack cell voltage level. Each respective set (FCx) is selectively connectable in parallel to a respective corresponding battery pack cell (BATx) by closing a respective first switch (SWx), for charging or boosting battery pack cell (BATx) power output. Each set (FCx) includes a respective DC-DC converter, arranged to regulate the operating point of the set (FCx) to its maximum power point or uniquely selected other operating point, to maintain the respective battery pack cell (BATx) at a defined state of charge for all battery pack cells (BAT1-BATn) constituting the battery pack (2).
A battery pack cell state of charge balancing system-comprising a plurality of serially connected battery pack cells, each respective battery pack cell comprising one or more battery cells connected in parallel, the plurality of serially connected battery pack cells constituting a battery pack, and for each respective battery pack cell a set of serially connected fuel cells at battery pack cell voltage level, the sets of serially connected fuel cells further being serially connected in correspondence to the plurality of serially connected battery pack cells,
Dependencies are inferred from the claim text.