Battery charging device
First Claim
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1. A battery charging device, comprising:
- a DC power source, output terminals for a battery, and a charging-starter switch connected between said DC power source and said output terminals so as to provide DC power at the output terminals by turning on the charging-starter switch;
a current detecting circuit connected to the output terminals for detecting whether or not a battery is connnected to the output terminals and for detecting a current flowing to the battery;
a voltage control circuit responsive to a signal derived from said current detecting circuit to provide a charging voltage or stand-by voltage of a predetermined magnitude at the output terminals; and
a current control circuit responsive to said signal to charge the battery with a current of a predetermined magnitude;
said current detecting circuit being OR-connected to said voltage control circuit and to said current control circuit.
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Abstract
A battery charging device which is so designed that whether or not the battery is connected in position can be detected by utilizing a current detecting circuit instead of a mechanically-structured component, such as a switch.
164 Citations
2 Claims
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1. A battery charging device, comprising:
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a DC power source, output terminals for a battery, and a charging-starter switch connected between said DC power source and said output terminals so as to provide DC power at the output terminals by turning on the charging-starter switch; a current detecting circuit connected to the output terminals for detecting whether or not a battery is connnected to the output terminals and for detecting a current flowing to the battery; a voltage control circuit responsive to a signal derived from said current detecting circuit to provide a charging voltage or stand-by voltage of a predetermined magnitude at the output terminals; and a current control circuit responsive to said signal to charge the battery with a current of a predetermined magnitude; said current detecting circuit being OR-connected to said voltage control circuit and to said current control circuit. - View Dependent Claims (2)
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Specification
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Current AssigneeTOKO Incorporated (Murata Manufacturing Co Limited)
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Original AssigneeTOKO Incorporated (Murata Manufacturing Co Limited)
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InventorsMikami, Toshio, Nagasawa, Yasuo
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Primary Examiner(s)NOT, DEFINED
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Assistant Examiner(s)Ault, Anita M.
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Application NumberUS06/835,935Time in Patent Office497 DaysField of Search320/15, 320/22, 320/30, 320/31, 320/32, 320/39, 320/40, 320/2US Class Current320/165CPC Class CodesH02J 7/0024 Parallel/serial switching o...Y10S 320/12 Precharging analysis, e.g. ...
