Charge controller for battery charger
First Claim
1. A battery charger for charging a storage battery, comprising:
- a current controller circuit for controlling the current of a charging energy supplied to the battery;
a voltage detector circuit for detecting the charge voltage to the battery;
a discharge circuit for discharging the battery; and
a charge voltage examining circuit for activating the discharge circuit when the charge voltage stays in a specified range between upper and lower limits V1 and V2 after a period of time from the start of charging and then, starting recharging when the charge voltage is lower than the lower limit V2 of the specified range.
1 Assignment
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Accused Products
Abstract
For charging a storage battery, e.g. a nickel-cadmium cell, recharging is conducted after the battery is forcibly discharged while the charge voltage stays in a specified range after a period of time from the start of the charging action. Accordingly, the generation of memory effect will be avoided. The charging will successfully be carried out without declining the storage capacity of the battery. In both charge and adaptor modes, output voltage and current are examined whether the battery is coupled correctly or not and if not, their delivery is canceled with producing an alarm display. As the result, the charging to the battery and the power supply to an external electric appliance will be implemented without error.
27 Citations
10 Claims
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1. A battery charger for charging a storage battery, comprising:
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a current controller circuit for controlling the current of a charging energy supplied to the battery; a voltage detector circuit for detecting the charge voltage to the battery; a discharge circuit for discharging the battery; and a charge voltage examining circuit for activating the discharge circuit when the charge voltage stays in a specified range between upper and lower limits V1 and V2 after a period of time from the start of charging and then, starting recharging when the charge voltage is lower than the lower limit V2 of the specified range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification