Patent ID: 11936012
Assignee: HONDA MOTOR CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. An abnormality detection device for a battery pack that detects an abnormality of a battery pack accommodating a plurality of battery cells, the abnormality detection device comprising:
a voltage value acquisition unit configured to acquire a voltage value of each of the plurality of battery cells;
at least one state value measurement unit configured to measure a state value inside the battery pack, the state value being different from a temperature of at least one battery cell among the plurality of battery cells; and
an abnormality determination unit configured to determine an abnormality of the battery pack,
wherein the abnormality determination unit includes:
a voltage value comparison unit configured to compare the voltage value acquired by the voltage value acquisition unit with a predetermined voltage threshold value, and
a state value comparison unit configured to compare the state value acquired by the at least one state value measurement unit with a first predetermine state threshold value and to compare a degree of change in the state value per unit time with a second predetermined state threshold value,

wherein the abnormality determination unit is configured to determine an abnormality of the battery pack when the voltage value is equal to or less than the predetermined voltage threshold value and the state value is equal to or greater than the first predetermine state threshold value, or the voltage value is equal to or less than the predetermined voltage threshold value and the degree of change in the state value is equal to or greater than the second predetermined state threshold value, and
wherein the voltage value acquisition unit, the at least one state value measurement unit, the abnormality determination unit, the voltage value comparison unit, and the state value comparison unit are each implemented via at least one processor.