US 12,394,831 B2
Power supply device
Jeewook Chang, Kanagawa (JP); and Takahiro Kamikawa, Osaka (JP)
Assigned to PANASONIC ENERGY CO., LTD., Osaka (JP)
Appl. No. 17/913,777
Filed by SANYO Electric Co., Ltd., Kadoma (JP)
PCT Filed Mar. 24, 2021, PCT No. PCT/JP2021/012185
§ 371(c)(1), (2) Date Sep. 22, 2022,
PCT Pub. No. WO2021/200446, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2020-061462 (JP), filed on Mar. 30, 2020.
Prior Publication US 2024/0213559 A1, Jun. 27, 2024
Int. Cl. H01M 10/48 (2006.01); G01R 27/18 (2006.01); H01M 10/42 (2006.01); H02H 3/02 (2006.01); H02J 13/00 (2006.01)
CPC H01M 10/482 (2013.01) [G01R 27/18 (2013.01); H02H 3/023 (2013.01); H02J 13/00012 (2020.01); H01M 2010/4278 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A power supply device comprising:
a plurality of battery modules, each of the plurality of battery modules including a failure determination unit configured to determine a failure and a normality and to output the failure and the normality as a High signal and a low signal;
a failure transmission line connected to the failure determination unit of each of the plurality of battery modules; and
a module failure determination circuit connected to the failure transmission line, the module failure determination circuit being configured to determine failure and normality of the plurality of battery modules, wherein
the module failure determination circuit includes:
a voltage determination circuit configured to determine a High level and a Low level of the failure transmission line;
an impedance detection circuit configured to detect an impedance with respect to a ground line; and
a calculation circuit configured to determine the failure and the normality of the plurality of battery modules and an abnormality of the failure transmission line based on outputs of the voltage determination circuit and the impedance detection circuit.