US 11,656,282 B2
Energy storage device management apparatus and energy storage device management method
Yukiko Fujino, Kyoto (JP); Yuta Kashiwa, Kyoto (JP); Yuki Sugiyama, Kyoto (JP); and Takanobu Araki, Kyoto (JP)
Assigned to GS YUASA INTERNATIONAL LTD., Kyoto (JP)
Appl. No. 16/498,317
Filed by GS Yuasa International Ltd., Kyoto (JP)
PCT Filed Mar. 26, 2018, PCT No. PCT/JP2018/012037
§ 371(c)(1), (2) Date Sep. 26, 2019,
PCT Pub. No. WO2018/181129, PCT Pub. Date Oct. 4, 2018.
Claims priority of application No. JP2017-069840 (JP), filed on Mar. 31, 2017.
Prior Publication US 2021/0103000 A1, Apr. 8, 2021
Int. Cl. G01R 31/367 (2019.01); H02J 7/00 (2006.01); H01M 10/48 (2006.01); G01R 31/392 (2019.01); G01R 31/388 (2019.01)
CPC G01R 31/367 (2019.01) [G01R 31/388 (2019.01); G01R 31/392 (2019.01); H01M 10/48 (2013.01); H02J 7/0048 (2020.01); H01M 2220/20 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An energy storage device management apparatus, comprising:
a voltage sensor that detects a voltage of an energy storage device;
a memory in which information on a correlation between the voltage and a residual capacity of the energy storage device or information on a correlation between the voltage and a converted state of charge (SOC), which is a ratio of the residual capacity to a reference capacity, is stored, the reference capacity being set to a predetermined amount less than the residual capacity at a full charge of the energy storage device; and
an information processing unit,
wherein the information processing unit obtains a state of charge of the energy storage device based on the voltage detected by the voltage sensor and the information stored in the memory, and
wherein the information processing unit determines, in a region that the energy storage device has a capacity equal to or less than the reference capacity, where the capacity is less likely to deteriorate, a state of the energy storage device based on a comparison between the state of charge and a state of charge obtained by another method.