A wireless charging control circuit and wireless charging device

Abstract

The present invention provides a wireless charging control circuit and a wireless charging device, including: a power supply and a wireless transmitting circuit, the first end of the wireless transmitting circuit is connected to the input terminal of the power supply, the second end of the wireless transmitting circuit is connected to the grounding terminal of the power supply, and the wireless The charging control circuit also includes: a temperature sensing circuit, the temperature sensing circuit includes at least one thermistor, the first end of the temperature sensing circuit is connected to the power input end; a shunt circuit, the first end of the shunt circuit is connected to the power input end, and the shunt circuit The second end of the control circuit is grounded; the control circuit, the first end of the control circuit is connected to the second end of the temperature sensing circuit, the second end of the control circuit is connected to the third end of the shunt circuit; the control circuit is used for the resistance of the temperature sensing circuit When the value is greater than the first target resistance value or less than the second target resistance value, the resistance of the shunt circuit is adjusted to increase the input current of the shunt circuit and decrease the current of the wireless transmitting circuit. The embodiments of the present invention can improve the safety of the wireless charging device.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a wireless charging control circuit and a wireless charging device. Background technique [0002] With the development of science and technology, mobile terminals are increasingly popular, and various mobile terminals bring great convenience to users. In order to facilitate charging of mobile terminals, wireless charging technology is gradually applied to mobile terminals, and more and more people are accustomed to using wireless charging devices to charge mobile terminals. [0003] During the wireless charging process, the excessive heat generated by the circuit components will increase the temperature of the wireless charging device. The continuous increase in temperature of the wireless charging device will damage the wireless charging device, resulting in poor safety of the wireless charging device. Contents of the invention [0004] The embodiment of the present i...

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Problems solved by technology

[0004] The embodiment of the present invention provides a wireless charging control circuit and a wireless charging device to solve the problem that in the prior art, during the wireless charging process, the temperature of the wireless charging device continues to rise, which will damage the wireless charging device, thereby causing the safety of the wireless charging device. poor problem

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