Battery charging circuit and method for charging battery
A battery charging and charging circuit technology, applied in secondary battery charging/discharging, battery circuit devices, circuit devices, etc., can solve problems such as complex costs
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[0011] The purpose of the present invention is to monitor the temperature of the charging IC. When the temperature of the charging IC exceeds a certain predetermined temperature value, the circuit of the present invention will reduce the temperature of the IC. Embodiments will be specifically described below.
[0012] As shown in FIG. 1 , a temperature sensor (not shown) detects the temperature of the charging chip and provides a voltage signal Vdt to the inverting input terminal of the comparator U1. The voltage signal Vdt can also be obtained by a temperature sensor (not shown) that directly monitors the temperature of the IC. The non-inverting input terminal of the comparator U1 is connected to the reference voltage Vref and one terminal of the resistor R1, and the other terminal of the resistor R1 is connected to the resistor R2 and the drain of the metal oxide semiconductor field effect transistor (Metal Oxide Semiconductor Field Effect Transistor, MOSFET) M1 and the no...
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