US 11,913,996 B2
Estimation device, estimation method, and computer program
Yasunori Mizoguchi, Kyoto (JP); and Yasuyuki Hamano, Kyoto (JP)
Assigned to GS Yuasa International Ltd., Kyoto (JP)
Appl. No. 17/765,249
Filed by GS Yuasa International Ltd., Kyoto (JP)
PCT Filed Oct. 2, 2020, PCT No. PCT/JP2020/037504
§ 371(c)(1), (2) Date Mar. 30, 2022,
PCT Pub. No. WO2021/066129, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 2019-183338 (JP), filed on Oct. 3, 2019.
Prior Publication US 2022/0349941 A1, Nov. 3, 2022
Int. Cl. G01R 31/367 (2019.01); G01R 31/392 (2019.01); G01R 31/3842 (2019.01); G01R 31/374 (2019.01); H02J 7/00 (2006.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01); H01M 10/06 (2006.01)
CPC G01R 31/367 (2019.01) [G01R 31/374 (2019.01); G01R 31/3842 (2019.01); G01R 31/392 (2019.01); H01M 10/4285 (2013.01); H01M 10/486 (2013.01); H02J 7/005 (2020.01); H02J 7/0048 (2020.01); H01M 10/06 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An estimation device comprising:
a derivation unit configured to derive a derivation history based on a current, a voltage of a lead-acid battery and a temperature of the lead-acid battery acquired at a point of time of an estimation;
a specifying unit configured to specify at least one physical quantity out of a first physical quantity of an amount of a positive active material, a second physical quantity of a specific surface area of a positive electrode material, a third physical quantity of bulk density of the positive electrode material, a fourth physical quantity of positive active material particles in a cluster size, a fifth physical quantity of a cumulative amount of lead sulfate of a negative electrode material, a sixth physical quantity of a specific surface area of the negative electrode material, a seventh physical quantity of a corrosion amount of a positive electrode grid, an eighth physical quantity of resistivity of a positive electrode plate, and a ninth physical quantity of resistivity of a negative electrode plate,
based on the derived derivation history and at least one relationship selected from a group consisting of:
a first relationship between a first history based on a preliminary obtained current, a preliminary obtained voltage of the lead-acid battery or a different lead-acid battery and a preliminary obtained temperature of the lead-acid battery or the different lead-acid battery and the first physical quantity;
a second relationship between a second history based on the preliminary obtained current, the preliminary obtained voltage of the lead-acid battery or the different lead-acid battery and the preliminary obtained temperature of the lead-acid battery or the different lead-acid battery and the second physical quantity;
a third relationship between a third history based on the preliminary obtained current, the preliminary obtained voltage of the lead-acid battery or the different lead-acid battery and the preliminary obtained temperature of the lead-acid battery or the different lead-acid battery and the third physical quantity;
a fourth relationship between a fourth history based on the preliminary obtained current, the preliminary obtained voltage of the lead-acid battery or the different lead-acid battery and the preliminary obtained temperature of the lead-acid battery or the different lead-acid battery and the fourth physical quantity;
a fifth relationship between a fifth history based on the preliminary obtained current, the preliminary obtained voltage of the lead-acid battery or the different lead-acid battery and the preliminary obtained temperature of the lead-acid battery or the different lead-acid battery and the fifth physical quantity;
a sixth relationship between a sixth history based on the preliminary obtained current, the preliminary obtained voltage of the lead-acid battery or the different lead-acid battery and the preliminary obtained temperature of the lead-acid battery or the different lead-acid battery and the sixth physical quantity;
a seventh relationship between a seventh history based on the preliminary obtained current, the preliminary obtained voltage of the lead-acid battery or the different lead-acid battery and the preliminary obtained temperature of the lead-acid battery or the different lead-acid battery and the seventh physical quantity;
an eighth relationship between an eighth history based on the preliminary obtained current, the preliminary obtained voltage of the lead-acid battery or the different lead-acid battery and the preliminary obtained temperature of the lead-acid battery or the different lead-acid battery and the eighth physical quantity; and
a ninth relationship between a ninth history based on the preliminary obtained current, the preliminary obtained voltage of the lead-acid battery or the different lead-acid battery and the preliminary obtained temperature of the lead-acid battery or the different lead-acid battery and the ninth physical quantity, and
an estimation unit configured to estimate a degree of deterioration of the lead-acid battery based on the at least one specified physical quantity.