A wireless charging transmitter, receiver, charging device and wireless charging method

A wireless charging and transmitter technology, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problems of short vertical transmission distance of electric power, large power consumption of feedback data coding and modulation mode, and low output power, etc. The effect of low, lower production cost and high practicability
CN104158269BActive Publication Date: 2016-03-16湖南长城科技信息有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
湖南长城科技信息有限公司
Publication Date
2016-03-16

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Abstract

The invention discloses a wireless charging transmitter, a receiver, a charging device and a wireless charging method. The wireless charging transmitter comprises a first microcontroller, a drive circuit, a resonant transmitting circuit, a PPM (pulse position modulation) decoding circuit and a power circuit; the wireless charging receiver comprises a resonant receiving circuit, a full-bridge rectifier circuit, a DC-DC conversion circuit, a current sensor, a lithium battery, an analog sampling circuit, a second microcontroller and a PPM transmitting circuit; and the wireless charging device comprises the above wireless charging transmitter and the receiver. The principle of electromagnetic coupling is used by the invention to transmit electromagnetic energy; a primary coil and a secondary coil also serve as communication coils, and charging feedback data are transmitted in a PPM mode for intelligent control on the transmission power; the realization mode is simple, the transmission power is large, the power consumption is low, and the cost is low; and the transmitter, the receiver and the charging device can be widely applied to various digital products with power no more than 10W.
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Description

technical field

[0001] The invention relates to a wireless charging transmitter, a receiver, a charging device and a wireless charging method. Background technique

[0002] Wireless charging technology is an emerging technology that has emerged in recent years, and wireless charging based on the principle of electromagnetic induction is relatively mature at present. Now wireless charging technology shows great potential in the consumer electronics market, providing a convenient solution for charging portable electronic devices without connecting a power cord. The wireless charging power supply of the WPC alliance is mainly used in the market. Its principle is also based on the principle of electromagnetic induction. The receiver feeds back information codes to the transmitter. The modulation method is a PING method combining analog and digital. The output power is 5W. for smartphones. However, there are no relatively mature products on the market for electronic devices suc...

Claims

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