Device for displaying remaining charge of secondary cell

Details Device for displaying remaining charge of secondary cell Device for displaying remaining charge of secondary cell

G - Physics

01

R

G01R 31/36 (2006.01) H01M 10/48 (2006.01)

Patent

CA 2119650

- 32 - ABSTRACT A device for and a method of indicating the residual capacity of a secondary cell, that needs be recharged using a simply constituted device, correctly and within a short period of time. The device 1 for indicating the residual capacity comprises a power source feeding means 6, a cell-holding means 7, a terminal voltage measuring means 8, a sampling means 9 for measuring the terminal voltage of the cell 2 while the power source feeding means 6 is feeding a current to the cell, a storage means 10 storing a look-up table 100 which is specific to the kind of the cell 2 of which the residual capacity is to be measured and shows a relationship between a group of specific sections that are divided to represent the ranges of the residual capacity of the cell and the specific voltage regions corresponding to the specific sections, an operation means 11 which compares the measured voltage value with the specific voltage regions in the look-up table, successively, to judge the residual capacity of the cell, and an indicator means which operates in response to the output of the operation means 11.

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