A radio energy efficient transmission method based on a PCB coil

A technology of wireless power and transmission method, applied in the field of electronics, can solve the problems of inability to optimize transmission efficiency, limitation of transmission efficiency of PCB coil wireless power transmission distance, etc.

Active Publication Date: 2019-01-11
温州慧电科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of wireless power supply for consumer electronics, the shape of the PCB coil often depends on the shape of the wireless charger's shell and the specific application scenario. The limitation of the shape of the coil also

Method used

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  • A radio energy efficient transmission method based on a PCB coil
  • A radio energy efficient transmission method based on a PCB coil
  • A radio energy efficient transmission method based on a PCB coil

Examples

Experimental program
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Embodiment Construction

[0052] The present invention will be further described below in conjunction with accompanying drawing.

[0053] Such as figure 1 and 2 As shown, a PCB coil-based high-efficiency wireless power transmission method of the present invention improves the power transmission efficiency of two PCB coils for wireless power transmission by inputting alternating current of a specific frequency. The two PCB coils for wireless energy are the sending coil and the receiving coil respectively.

[0054] The specific scenario is: the sending coil, the signal transmitter, and the first series compensation capacitor are connected in series to form a loop; the sending and receiving coils, the load, and the second series compensation capacitor are connected in series to form a loop. The equivalent impedance of the load is a known quantity; both the sending coil and the receiving coil are square helical coils. Printed line width w of sending coil (1) , printed line thickness t (1) , the spacin...

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PUM

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Abstract

The invention discloses a radio energy efficient transmission method based on a PCB coil. The transmission distance of PCB coil wireless transmission is also limited by the transmission efficiency. The invention is as follows: Step 1, calculating the inductance value L of the sending coil and the receiving coil; 2, calculating the parasitic resistance value R of the transmitting coil and the receiving coil; 3, calculate that parasitic capacitance value C of the transmitting coil and the receive coil; Step 4, establishing the relationship between the transmission efficiency eta and the input frequency f, and determining the input frequency fa corresponding to the maximum input efficiency eta max. An alternating current having a frequency of fa obtained in step 4 is input to the transmissioncoil. The transmitting coil and the receiving coil are mutually inductive, and the receiving coil outputs alternating current. The invention improves the efficiency of the radio energy transmission by optimizing the frequency of the input AC power when the radio energy transmission of the PCB coil is carried out.

Description

technical field [0001] The invention belongs to the technical field of electronics, and in particular relates to a method for efficiently transmitting wireless energy based on PCB coils. Background technique [0002] Wireless power transmission technology can realize non-contact power transmission, which can reduce the trouble caused by traditional wired transmission. Magnetic coupling resonant wireless power transmission is one of the commonly used technical means. At present, the key problem limiting the wide application of magnetic coupling resonant wireless power transmission technology is the low power transmission efficiency. Transmission efficiency is related to the geometric size of the coil, transmission distance, load, and operating frequency. PCB coils can standardize coil manufacturing. PCB coils are rigid substrate coils that can effectively protect the coils from deformation. They are mainly used for wireless power transmission in occasions prone to collision...

Claims

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Application Information

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IPC IPC(8): H02J50/12H01F27/28H01F38/14
CPCH01F27/2804H01F38/14H02J50/12
Inventor 程瑜华陈国雄王高峰李文钧
Owner 温州慧电科技有限公司
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