US 11,916,214 B2
Power supply device comprising sheet heater to heat battery cells
Yasuhiro Oono, Osaka (JP); and Kentaro Okamura, Hyogo (JP)
Assigned to PANASONIC ENERGY CO., LTD., Osaka (JP)
Appl. No. 17/442,043
Filed by SANYO Electric Co., Ltd., Daito (JP)
PCT Filed Mar. 19, 2020, PCT No. PCT/JP2020/012308
§ 371(c)(1), (2) Date Sep. 22, 2021,
PCT Pub. No. WO2020/196266, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-064716 (JP), filed on Mar. 28, 2019.
Prior Publication US 2022/0190406 A1, Jun. 16, 2022
Int. Cl. H01M 10/6571 (2014.01); H01M 10/615 (2014.01); H01M 10/617 (2014.01); H01M 10/643 (2014.01); H01M 50/213 (2021.01); H01M 50/50 (2021.01); H01M 50/224 (2021.01)
CPC H01M 10/6571 (2015.04) [H01M 10/615 (2015.04); H01M 10/617 (2015.04); H01M 10/643 (2015.04); H01M 50/213 (2021.01); H01M 50/224 (2021.01); H01M 50/50 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A power supply device comprising:
a battery block including a plurality of battery cells, the plurality of battery cells including positive electrodes and negative electrodes, each of the plurality of battery cells including a corresponding one of the positive electrodes and a corresponding one of the negative electrodes at both ends of the each of the plurality of battery cells;
lead plates connected to the positive electrode and the negative electrode of the plurality of battery cells to electrically connect the battery cells to one another; and
a sheet heater configured to heat the battery cells, the sheet heater including a plurality of heating sheet portions, and a heater wire configured to interconnect the plurality of heating sheet portions, wherein
one of the lead plates connected to the positive electrode and the negative electrode disposed on one side of the battery block, the sheet heater is thermally coupled only to negative electrode lead plates, but not to positive electrode lead plates, wherein the heater wire is separated by a gap from the positive electrode lead plates.