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Communication interference suppression method suitable for a plurality of transmitting ends of wireless charging system

A technology of wireless charging and interference suppression, which is applied in transmission systems, near-field transmission systems, electrical components, etc., can solve problems such as communication interference, increased hardware costs, and large volumes of capacitors and inductances, and achieve cost reduction, reliable operation, and communication interference. Reduced effect

Inactive Publication Date: 2018-05-15
无锡市瀚为科技有限公司
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AI Technical Summary

Problems solved by technology

[0002] The QI standard wireless charging system will have a communication packet during normal operation. The communication packet is added to the transmitting coil in the form of an amplitude modulated wave. The amplitude of the transmitting coil will change, and the amplitude change will affect the waveform on the power supply. If multiple The transmission system is connected to the same power supply, which will cause communication interference and affect the normal operation of wireless charging
[0003] Currently known solutions use power supply filtering, the interference signal is a 2K communication signal, and the network of inductors, resistors, and capacitors is used for filtering to reduce the interference signal. This method needs to increase hardware costs and reduce system efficiency. Capacitors and inductances are large in size, which is not conducive to small-size applications, and filtering only reduces interference, but cannot completely eliminate interference

Method used

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  • Communication interference suppression method suitable for a plurality of transmitting ends of wireless charging system
  • Communication interference suppression method suitable for a plurality of transmitting ends of wireless charging system

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Embodiment Construction

[0013] The present invention will be further explained below in conjunction with the drawings.

[0014] As attached figure 1 The shown wireless charging system including multiple transmitters includes a power supply 1 which supplies power to two charging subsystems. Each charging subsystem includes a transmitter 2 and a receiver 3, a power supply 1 and each The transmitter 2 of each charging subsystem is electrically connected. Each transmitting terminal 2 communicates with the receiving terminal 3 for power transmission through amplitude modulation wave, as shown by the dotted line in the figure, the amplitude modulation wave signal on the transmitting coil of the transmitting terminal 2 of the power supply 1 will crosstalk to the power supply On 1, the power supply 1 needs to supply power to the two charging subsystems, so the interference on the charging subsystem 1 is added to the charging subsystem 2 through the power supply 1, thereby generating a communication signal on th...

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Abstract

The invention discloses a communication interference suppression method suitable for a plurality of transmitting ends of a wireless charging system. The wireless charging system comprises a power supply, the power supply supplies power to the plurality of transmitting terminals, and each transmitting terminal communicates with a receiving end performing electric energy transmission with the same through amplitude modulation waves, and the working frequency bands of the different transmitting terminals for performing amplitude modulation wave communication are different from each other. By adoption of the communication interference suppression method suitable for the plurality of transmitting ends of the wireless charging system, the communication interference between different charging subsystems is greatly reduced, the communication interference problem between different transmitting terminals is solved just in a software processing mode without adding any peripheral hardware, so thatthe cost is reduced, and the operation is reliable.

Description

Technical field [0001] The invention relates to the field of wireless charging systems, and in particular to a method for suppressing communication interference between multiple transmitting ends of the wireless charging system. Background technique [0002] The QI standard wireless charging system will have a communication package when it is working normally. The communication package is added to the transmitting coil in the form of an amplitude modulated wave. There will be amplitude changes on the transmitting coil. The amplitude change will affect the waveform on the power supply. The transmitting system is connected to the same power supply, which will cause communication interference and affect the normal operation of wireless charging. [0003] The currently known solutions use power supply filtering processing, the interference signal is a 2K communication signal, and the inductance, resistance, and capacitor network are used for filtering processing to reduce the interfere...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/04H04B5/00H02J50/80H02J50/40
CPCH02J50/40H02J50/80H04B1/0475H04B5/79
Inventor 于萌
Owner 无锡市瀚为科技有限公司
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