초록 ▼

An over-charging voltage is supplied from a voltage detecting circuit 39 to a priority controlling circuit 46 and a switch circuit 43. A voltage detecting circuit 41 detects a terminal voltage of a secondary battery BT (namely, an over-charging voltage) and supplies the voltage to the switching circ

An over-charging voltage is supplied from a voltage detecting circuit 39 to a priority controlling circuit 46 and a switch circuit 43. A voltage detecting circuit 41 detects a terminal voltage of a secondary battery BT (namely, an over-charging voltage) and supplies the voltage to the switching circuit 43. A current that flows in a resistor 42 is supplied to a cumulating circuit 40 and the switch circuit 43. The cumulating circuit 40 adds a voltage received from the voltage detecting circuit 39 through the priority controlling circuit 46 and a current that flows in the resistor 42 and supplies the added result as a control signal to a charging portion PS. A temperature detecting circuit 44 detects the temperature of a battery pack BP. The detected result is supplied to the switch circuit 43 and a detected voltage switching circuit 45. The switch circuit 43 performs on/off operations corresponding to the received voltage, terminal voltage, current, and temperature. The detected voltage switching circuit 45 switches the voltage of the voltage detecting circuit 39 corresponding to the detected result of the temperature.

대표청구항 ▼

[ What is claimed is:] [1.] A secondary battery apparatus, comprising:a first terminal for receiving one of a charging voltage and a charging current;a second terminal for outputting a control voltage and a control signal, the control voltage being generated based on the charging voltage and a refer

[ What is claimed is:] [1.] A secondary battery apparatus, comprising:a first terminal for receiving one of a charging voltage and a charging current;a second terminal for outputting a control voltage and a control signal, the control voltage being generated based on the charging voltage and a reference voltage;a third terminal for receiving a common voltage;a secondary battery for receiving one of the charging voltage and the charging current;switching means connected to the third terminal for stopping a supply of one of the charging voltage and the charging current to the secondary battery;temperature detecting means for detecting a secondary battery temperature, wherein when said temperature detecting means detects a temperature exceeding a chargeable temperature range corresponding to the reference voltage the control signal is generated; andvoltage selecting means for selecting the reference voltage corresponding to the secondary battery temperature detected by the temperature detecting means.