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Wireless power supply system adopting parallel power supply by multiple transmitting coils based on PT symmetry principle

A wireless power supply and transmitting coil technology, applied in the direction of transformer/inductor coil/winding/connection, circuit, inductor, etc., can solve the problem that the critical transmission distance is not optimal, and achieve the improvement of critical transmission distance, simple and reliable structure, Effect of Critical Coupling Coefficient Reduction

Pending Publication Date: 2019-08-09
广州汇力威无线供电技术有限公司
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Problems solved by technology

In recent years, researchers have applied parity-time (PT) symmetric quantum theory to the field of wireless power transmission, which has shown great advantages, but the critical transmission distance of the traditional single transmitting coil system based on the principle of parity-time symmetry has not been achieved. achieve optimal

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  • Wireless power supply system adopting parallel power supply by multiple transmitting coils based on PT symmetry principle
  • Wireless power supply system adopting parallel power supply by multiple transmitting coils based on PT symmetry principle
  • Wireless power supply system adopting parallel power supply by multiple transmitting coils based on PT symmetry principle

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Embodiment Construction

[0023] In order to further illustrate the content and characteristics of the present invention, the specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but the implementation and protection of the present invention are not limited thereto.

[0024] Such as figure 1 As shown, the wireless power supply system provided by this embodiment based on the principle of PT symmetry and parallel power supply of multiple transmitting coils includes two parts: a transmitting device and a receiving device, and the transmitting device includes a negative resistance -R N and n transmitter modules, the negative resistance -R N and n transmitting modules are connected in parallel, the negative resistance -R N To provide energy for the system, each transmitting module is composed of transmitting coils connected in series Transmitter resonant capacitor and the equivalent internal resistance of the transmitting coil ...

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Abstract

The invention discloses a wireless power supply system adopting parallel power supply by multiple transmitting coils based on the PT symmetry principle, comprising a transmitting device and a receiving device. The transmitting device includes a negative resistor and n transmitting modules. The negative resistor is connected in parallel with the n transmitting modules to provide energy for the system. Each transmitting module is composed of a transmitting coil, a transmitter resonant capacitor and a transmitting coil equivalent internal resistor which are connected in series. The receiving device includes a receiving module and a load. The receiving module is connected in series with the load. The receiving module is composed of a receiving coil, a receiver resonant capacitor and a receiving coil equivalent internal resistor which are connected in series. In the parity-time symmetry region, constant transmission efficiency and output power are realized, and the critical coupling coefficient of the system is reduced. That is to say, the critical transmission distance of the system is improved, and the output power capacity of the system is improved. The system has significant advantages for high-power application occasions.

Description

technical field [0001] The present invention relates to the technical field of wireless power transmission or wireless power transmission, in particular to a wireless power supply system based on the principle of PT symmetry, in which multiple transmitting coils are connected in parallel for power supply. Background technique [0002] Compared with the traditional wire power supply method without electrical connection, Wireless Power Transfer (WPT) has the advantages of flexibility, convenience, safety and reliability. Existing wireless power transmission technology is mainly based on the principles of electromagnetic induction and magnetic resonance, and some research results have been applied to electronic consumer products, implanted medical equipment, electric vehicle charging and other fields. However, the inductive wireless power transmission technology has short transmission distance and low efficiency, and the magnetic resonance wireless power transmission technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12H02J50/40H02J50/70H01F27/28H01F38/14
CPCH02J50/12H02J50/40H02J50/70H01F27/28H01F38/14
Inventor 张波吴理豪江彦伟
Owner 广州汇力威无线供电技术有限公司
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