US 12,149,103 B2
Secondary cell system
Koichi Yamanoue, Inuyama (JP); Masayoshi Takahashi, Inuyama (JP); and Daisuke Makio, Inuyama (JP)
Assigned to Imasen Electric Industrial Co., Ltd., Inuyama (JP)
Appl. No. 17/437,488
Filed by Imasen Electric Industrial Co., Ltd., Inuyama (JP)
PCT Filed Feb. 12, 2020, PCT No. PCT/JP2020/005289
§ 371(c)(1), (2) Date Sep. 9, 2021,
PCT Pub. No. WO2020/202810, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-070526 (JP), filed on Apr. 2, 2019.
Prior Publication US 2022/0158461 A1, May 19, 2022
Int. Cl. H02J 7/00 (2006.01); B60L 58/22 (2019.01)
CPC H02J 7/0019 (2013.01) [H02J 7/0024 (2013.01); B60L 58/22 (2019.02)] 20 Claims
OG exemplary drawing
 
1. A secondary cell system comprising:
two or more battery groups coupled to one another in parallel at a high-voltage terminal and a low-voltage terminal, wherein each battery group of the two or more battery groups includes:
two or more units of cells coupled to one another in series and including:
a first unit of cells coupled to the low-voltage terminal; and
at least a second unit of cells coupled to the high-voltage terminal; and
another terminal positioned between the first unit of cells and the at least a second unit of cells; and
a plurality of open/close switches configured to disconnect each battery group of the two or more battery groups from a circuit of the secondary cell system, wherein, for each battery group of the two or more battery groups, the plurality of open/close switches include:
a first open/close switch of the plurality of open/close switches coupled to and between the high-voltage terminal and the circuit; and
a second open/close switch of the plurality of open/close switches coupled to and between the another terminal and the circuit.