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 high power consumption of feedback data coding and modulation mode, short vertical transmission distance of electric power, and low output power, etc. Low, high practicability, easy to productize effect

Active Publication Date: 2014-11-19
湖南长城科技信息有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the deficiencies and limitations of the existing technology, the technical problem to be solved in the present invention is to provide a wireless charging tr

Method used

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  • Wireless charging transmitter, receiver, charging device and wireless charging method
  • Wireless charging transmitter, receiver, charging device and wireless charging method
  • Wireless charging transmitter, receiver, charging device and wireless charging method

Examples

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Example Embodiment

[0050] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0051] Such as figure 1 As shown, a wireless charging device is characterized by comprising a wireless charging transmitter and a wireless charging receiver. The wireless charging transmitter drive circuit excites the primary coil at a specific frequency. The resonant primary coil and the first resonant capacitor 1 connected in series generate LC resonance to generate electromagnetic waves. The wireless charging receiver receives electromagnetic energy through an LC matching circuit and passes DC-DC The conversion circuit charges the lithium battery.

[0052] Further, the microcontroller of the wireless charging receiver samples the output voltage and current through an analog sampling circuit and a current sensor, and combines and encodes the analog signals, and the generated PPM signal communicates the charging information to the primary coil through the secon...

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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.

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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Application Information

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IPC IPC(8): H02J7/02H02J17/00H02J50/12
Inventor 蓝力黄波孙文德聂世刚谭永祥
Owner 湖南长城科技信息有限公司
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