| abstract |
The present invention provides an inspection method for an alkaline storage battery that can accurately determine the presence or absence of a micro short-circuit in an alkaline storage battery without being affected by errors caused by variations in current accuracy between ambient temperature and charge / discharge equipment. To do. The method for inspecting an alkaline storage battery according to the present invention includes a step of discharging an initially charged alkaline storage battery to a predetermined voltage (S2), a step of leaving the discharged alkaline storage battery for a first predetermined time (S3), and a second step. The step of measuring the voltage of the alkaline storage battery left for one predetermined time (S4), the step of leaving the alkaline storage battery for a second predetermined time after voltage measurement (S5), and the voltage of the alkaline storage battery left for the second predetermined time The step of measuring again (S6), the step of calculating the difference between the voltage measured in step c and the voltage measured in step e (S7), and the difference between the calculated voltage and the reference value for pass / fail judgment The process (S8) which compares these is included. [Selection] Figure 1 |