US 12,412,938 B2
Electric power supply system for battery assembly control circuit of electricity storage device, and electricity storage device
Jeewook Chang, Kanagawa (JP); and Takahiro Kamikawa, Osaka (JP)
Assigned to PANASONIC ENERGY CO., LTD., Osaka (JP)
Appl. No. 17/911,265
Filed by SANYO Electric Co., Ltd., Kadoma (JP)
PCT Filed Mar. 24, 2021, PCT No. PCT/JP2021/012184
§ 371(c)(1), (2) Date Sep. 13, 2022,
PCT Pub. No. WO2021/200445, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2020-061461 (JP), filed on Mar. 30, 2020.
Prior Publication US 2023/0099799 A1, Mar. 30, 2023
Int. Cl. H01M 10/48 (2006.01); H01M 10/44 (2006.01); H02J 7/00 (2006.01); H02M 3/335 (2006.01)
CPC H01M 10/482 (2013.01) [H01M 10/441 (2013.01); H02J 7/0013 (2013.01); H02J 7/007 (2013.01); H02M 3/33569 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electric power supplying method comprising:
providing an electricity storage device including
a battery module including a plurality of rechargeable battery cells and a battery assembly control circuit, and
a power converting device configured to charge the battery module using commercial electric power and supply the commercial electric power to a load;
supplying operating electric power from the power converting device to the battery assembly control circuit of the battery module while an output voltage of the power converting device is higher than a predetermined voltage,
starting to supply operating electric power from the battery module to the battery assembly control circuit in response to a connection signal from a connection detector which detects that the power converting device starts to supply electric power to the battery assembly control circuit; and
stopping supplying the electric power from the battery module to the battery assembly control circuit in response to a stop signal from a discharge-stop determination unit which detects that the battery module stops being discharged.