Charge completion detector

Details Charge completion detector Charge completion detector

1988-10-05

1989-05-23

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 35, 320 48, 340636, H02J 700, G01K 1112

Patent

active

048333905

ABSTRACT:
A charge completion detector comprises a thermoelectric detecting element outputting a thermally generated electromotive force in correspondence with the rise of temperature incidental to the completion of charging a secondary cell, and detecting means electrically connected to the thermoelectric detecting element for detecting the thermally generated electromotive force generated in the thermoelectric detecting element. The thermoelectric detecting element comprises a base material of semiconductive ceramics and a plurality of pairs of electrodes formed spaced apart from each other by a prescribed distance on the base material for forming hot junctions and cold junctions. A heat radiating member is thermally coupled to the cold junctions of the base material. The temperature of the hot junction side thermally coupled to the secondary cell will be approximately the same as that of the secondary cell while the temperature of the cold junction side is kept at an environmental temperature. The rise of temperature is detected based on the change of the thermally generated electromotive force based on the difference between the temperatures of the hot junctions and cold junctions.

REFERENCES:
patent: 3518524 (1970-06-01), Roszyk
patent: 4371827 (1983-02-01), Mullersman et al.
patent: 4417782 (1983-11-01), Clarke et al.
patent: 4727006 (1988-02-01), Malinowski et al.

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