Apparatus for controlling charging of a storage battery
First Claim
1. An apparatus for controlling charging of a storage battery comprising:
- power supply means for operating initially in a constant current charging mode and then operating in a constant voltage charging mode in response to a charging mode switch-over signal, said storage battery being charged sequentially with a constant current and then a constant voltage from said power supply means;
charged voltage state detecting means for checking a charging state of said storage battery to output said charging mode switch-over signal to said power supply means, for switching-over from the constant current charging mode to the constant voltage charging mode, when the charged voltage reaches a predetermined constant value;
switching means for receiving, in response to said output signal from said charged voltage state detecting means, the voltage being applied to said storage battery and dividing the received voltage at different predetermined rates to output a plurality of signals; and
current variation detecting means for receiving one output signal from said switching means as a reference signal and designating the time when the output signal begins to increase as a charging completion point of time to output a desired signal level of a power-off signal to said power supply means indicating completion of the charging of said storage battery.
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Abstract
An apparatus for controlling charging of a storage battery that initially charges the storage battery in a constant current charging mode and then in a constant voltage charging mode when the charging voltage across the storage battery reaches a desired value. The present apparatus includes power supply means for operating initially in the constant current charging mode and supplying power to the storage battery, charged voltage state detecting means for switching over the operation of the power supply means from the constant current charging mode to the constant voltage charging mode when the charged voltage reaches the desired value, switching means for receiving the voltage being applied to the storage battery when the power supply means operates in the constant voltage charging mode and for dividing the received voltage at different predetermined rates to output the voltage-divided signals, and current variation detecting means for detecting a variation of the current being applied to the storage battery in response to an output signal from the switching means to output a power-off signal to the power supply means.
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Citations
10 Claims
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1. An apparatus for controlling charging of a storage battery comprising:
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power supply means for operating initially in a constant current charging mode and then operating in a constant voltage charging mode in response to a charging mode switch-over signal, said storage battery being charged sequentially with a constant current and then a constant voltage from said power supply means; charged voltage state detecting means for checking a charging state of said storage battery to output said charging mode switch-over signal to said power supply means, for switching-over from the constant current charging mode to the constant voltage charging mode, when the charged voltage reaches a predetermined constant value; switching means for receiving, in response to said output signal from said charged voltage state detecting means, the voltage being applied to said storage battery and dividing the received voltage at different predetermined rates to output a plurality of signals; and current variation detecting means for receiving one output signal from said switching means as a reference signal and designating the time when the output signal begins to increase as a charging completion point of time to output a desired signal level of a power-off signal to said power supply means indicating completion of the charging of said storage battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification