Charging control apparatus controlling charging current and control method therefore

A method of controlling a battery circuit comprising:

• reading the battery voltage detected by a voltage detector, via an input interface;
• deciding whether or not the read battery voltage has approached the protection voltage to a predetermined limit value;
• and
• limiting the charging current to a predetermined limit value via an output interface when the read battery voltage is decided to have approached the protection voltage to the predetermined limit value.

A charging control apparatus controlling charging current comprising:

• a voltage detector that detects a battery voltage;
• a battery protection circuit that stops charging current when the battery voltage detected by the voltage detecting unit reaches a protection voltage;
• a charging circuit being capable of changing a charging current value for charging a battery;
• and
• a control apparatus including:
• an input interface that inputs a signal indicating an operating state of the battery protection circuit;
• an output interface that outputs a signal for controlling the charging current;
• a protection state decision unit that decides whether or not the battery protection circuit has stopped the charging current;
• a voltage state decision unit that decides whether or not the battery voltage has reached the protection voltage, after the battery protection circuit stopped the charging current;
• and
• a charging control unit that cancels the stopping process of the charging current performed by the battery protection circuit and restarts the charging with the charging current limited to a predetermined limit value via the output interface when the battery voltage has not reached the protection voltage.

A method of controlling a battery circuit including a voltage detector that detects a battery voltage, a battery protection circuit that stops charging current when the battery voltage detected by the voltage detecting unit reaches a protection voltage, a charging circuit being capable of changing a charging current value for charging a battery, the method comprising:

• inputting a signal indicating an operating state of the battery protection circuit via an input interface;
• deciding whether or not the battery protection circuit has stopped the charging current;
• deciding whether or not the battery voltage has reached the protection voltage after the battery protection circuit stopped the charging current;
• and
• canceling a stopping process of the charging current performed by the battery protection circuit and restarting a charging with the charging current limited to a predetermined limit value via an output interface when the battery voltage has not reached the protection voltage.