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Communication method and device for wireless charging

A technology of wireless charging and communication methods, applied in circuit devices, electrical components, amplitude modulation carrier systems, etc., can solve the problems of low signal recognition efficiency at the transmitter and receiver, and achieve the advantages of anti-interference ability, stable communication, and charging range. big effect

Active Publication Date: 2021-12-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a wireless charging communication method and device, which can solve the problem of low signal identification efficiency between the transmitting end and the receiving end during wireless charging

Method used

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  • Communication method and device for wireless charging
  • Communication method and device for wireless charging
  • Communication method and device for wireless charging

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Embodiment Construction

[0030] In order to facilitate understanding, some descriptions of concepts related to the present application are given by way of example for reference. As follows:

[0031]ASK: A relatively simple modulation method, which is equivalent to the amplitude modulation in the analog signal. What is multiplied by the carrier frequency signal is a binary number. The frequency and phase can be used as constants, and the amplitude can be used as a variable. The information bit is transmitted through the amplitude of the carrier. delivered.

[0032] Binary on-off keying (On-Off Keying, OOK): It is a special case of ASK modulation, one amplitude is taken as 0, and the other amplitude is non-zero, and the sinusoidal carrier is controlled by a unipolar non-return-to-zero code sequence On and off. In optical fiber communication systems, OOK modulation is widely used. It should be understood that in the OOK modulation method, the amplitude of the carrier signal and the modulating signal a...

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Abstract

Embodiments of the present application provide a communication method and device for wireless charging, which relate to the field of terminal technology and can solve the problem of low efficiency of signal identification between a transmitting end and a receiving end during wireless charging. The method is as follows: the transmitting end obtains the modulated signal through the binary on-off keying OOK modulation method; the transmitting end generates a carrier signal in the transmitting coil according to the modulated signal, and the carrier signal is used for wireless charging to the receiving end, or the carrier signal is used to charge the receiving end terminal for wireless charging and communication. The embodiment of the present application is used for a process in which a transmitting end sends a carrier signal to a receiving end for communication during wireless charging.

Description

technical field [0001] The present application relates to the technical field of terminals, and in particular to a communication method and device for wireless charging. Background technique [0002] In a wireless charging system, the transmitter and receiver need to communicate with each other to achieve system control and information interaction. Since there is no direct contact between the transmitter and the receiver, the communication between the transmitter and the receiver relies on wireless communication. In the wireless charging system, available wireless communication technologies include: low-frequency inductive wireless charging, such as the carrier communication of the international standard Qi scheme established by the Wireless Power Consortium (WPC) for compatible wireless charging stands, including amplitude modulation, frequency Modulation and phase modulation, etc.; Bluetooth communication used in the high-frequency wireless charging solution AirFuel, etc....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/80H04L27/04
CPCH02J50/80H04L27/04
Inventor 张统罗佳芳王腾月刘其堂李宗健
Owner HUAWEI TECH CO LTD
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