| 摘要 |
PROBLEM TO BE SOLVED: To provide a correction method that enables a more accurate of a correction of a current sensor according to a temperature change in a current sensor detecting a current of electrification pertain to an electric charge of a secondary battery or discharge thereof.SOLUTION: A correction method of current sensors 30, 130, 131 and 132 comprises a reference temperature acquisition step S4 of acquiring temperatures pertain to the current sensors 30, 130, 131 and 132 as a reference temperature Ta in a state where electrification is halted; an electrification start step S5 of starting the electrification after the reference temperature acquisition step S4; a current temperature acquisition step S6 of acquiring temperatures pertain to the current sensors 30, 130, 131 and 132 as a current temperature Tb after the electrification start step S5; and a correction execution step S3 of executing a zero point correction of the current sensors 30, 130, 131 and 132 in the state where the electrification is halted when the reference temperature Ta and the current temperature Tb during the electrification satisfy a prescribed relationship. |
