Electrical charging device with function to prevent erroneous el

Details Electrical charging device with function to prevent erroneous el Electrical charging device with function to prevent erroneous el

1997-07-17

1998-12-08

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Means to identify cell or battery type

320110, H01M 1046

Patent

active

058475397

ABSTRACT:
An electrical charging device for preventing an erroneous electrical charging of a non-rechargeable battery includes a battery cell voltage sensing circuit and a switch control circuit for controlling an electrical charging in response to a presence or a non-presence of a battery cell voltage detected by this circuit. When a battery case houses one type of primary batteries, the switch control circuit prevents electrical charging when the voltage is detected, but permits electrical charging when the voltage is not detected. For another type of primary battery, the switch control circuit prevents electrical charging when the voltage is detected and it prevents electrical charging when the voltage is not detected.

REFERENCES:
patent: 4628243 (1986-12-01), Hodgman et al.
patent: 5355073 (1994-10-01), Nguyen
"Distinction between rechargeable battery and dry battery", pp. 37-38, IBM Technical Disclosure Bulletin, vol. 37, No. 9, Sep. 1994.
"Battery Type Indicator", pp. 449-450, IBM Technical Disclosure Bulletin, vol. 35, No. 4A, Sep. 1992.

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