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A High Efficiency Constant Voltage Constant Current Switching Wireless Charging Topology

A wireless charging, topology technology

Active Publication Date: 2022-05-24
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-efficiency constant-voltage and constant-current switching wireless charging topology in order to solve the problems of low output efficiency and energy waste in the existing constant-voltage and constant-current combined wireless charging system.

Method used

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  • A High Efficiency Constant Voltage Constant Current Switching Wireless Charging Topology
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  • A High Efficiency Constant Voltage Constant Current Switching Wireless Charging Topology

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Embodiment 1

[0030] A preferred embodiment of the present invention provides a high-efficiency constant voltage and constant current switching wireless charging topology, such as figure 1 As shown, the wireless charging topology includes a transmitter, a receiver, and constant current and constant voltage switches S1 and S2 for switching the working mode of the wireless charging topology. The wireless charging topology includes two working modes of constant current output and constant voltage output. . specific:

[0031] The transmitting end includes a DC power supply E, a high-frequency inverter H, a primary side coupling compensation structure including a transmitting compensation capacitor C1, and a transmitting coil L1, which are connected in sequence.

[0032] The receiving end includes receiving coils L2 and L3 connected in sequence, a secondary side coupling compensation structure, a rectifier circuit and a load.

[0033] The rectifier circuit includes a high-frequency rectifier. ...

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PUM

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Abstract

The invention discloses a high-efficiency constant-voltage and constant-current switching wireless charging topology, which relates to the technical field of wireless energy transmission, including a transmitting end, a receiving end, two kinds of work for switching the wireless charging topology constant current output and constant voltage output Mode constant current constant voltage switch S1 and S2. The transmitting end includes a DC power supply E connected in sequence, a high-frequency inverter H, a primary-side coupling compensation structure including a transmitting compensation capacitor C1 and a transmitting coil L1, and the receiving end includes receiving coils L2 and L3 connected in sequence, a secondary-side coupling compensation structure, rectifier circuit and load. The secondary side coupling compensation structure includes compensation inductance L22, receiving compensation capacitors C3 and C4 connected in series; the connection point of receiving coils L2 and L3 is connected between the receiving compensation capacitor C4 and the rectifier circuit through the switch S1, and the receiving compensation capacitors C3 and C4 The connecting point between them is connected to the switch S1 through the switch S2. This topology has the advantages of high efficiency and simple structure.

Description

technical field [0001] The invention relates to the technical field of wireless power transmission, in particular to a high-efficiency constant-voltage and constant-current switching wireless charging topology. Background technique [0002] Wireless charging technology originates from wireless power transmission technology, which can be divided into two types: low-power wireless charging and high-power wireless charging. Low-power wireless charging often uses electromagnetic induction, such as the Qi method for charging mobile phones. High-power wireless charging often adopts resonant type, and the power supply equipment transmits energy to the power-consuming device. The device uses the received energy to charge the battery and at the same time for its own operation, such as charging electric vehicles. [0003] Wireless charging is an ideal charging method for battery charging. Compared with the traditional plug-type charging method, wireless charging gets rid of the shac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/10H02J50/50
CPCH02J50/10H02J50/50
Inventor 麦瑞坤戴睿敏朱哲辉何正友
Owner SOUTHWEST JIAOTONG UNIV