US 12,149,119 B1
Battery system with integrated cell recovery
Aleksandar Lazarov, Rotterdam (NL); and Ron Hogedoorn, Bodegraven (NL)
Assigned to Brunswick Corporation, Mettawa, IL (US)
Filed by Brunswick Corporation, Mettawa, IL (US)
Filed on Nov. 6, 2023, as Appl. No. 18/502,758.
Application 18/502,758 is a continuation of application No. 17/855,977, filed on Jul. 1, 2022, granted, now 11,817,739.
Claims priority of provisional application 63/217,915, filed on Jul. 2, 2021.
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 9/06 (2006.01); H02J 7/00 (2006.01)
CPC H02J 9/068 (2020.01) [H02J 7/0013 (2013.01); H02J 7/00308 (2020.01); H02J 7/0042 (2013.01); H02J 7/0047 (2013.01); H02J 7/007194 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A rechargeable lithium-ion battery system comprising:
a cell pack comprising a plurality of battery cells;
a charger connection configured to connect to an external battery charger to supply a first charge current to recharge the plurality of battery cells;
a safety switch positioned between the cell pack and the charger connection and operable to divert the first charge current from the external battery charger through a cell recovery charger to the cell pack; and
wherein the cell recovery charger is operated to deliver a charge current to the cell pack to charge the plurality of battery cells until a cell voltage of each of the plurality of battery cells is greater than a threshold cell voltage or until a time out period is reached.