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A wireless charging power supply side circuit with reduced number of switch tubes and its application

A technology of wireless charging and switching tubes, which is applied in the direction of battery circuit devices, circuit devices, current collectors, etc., can solve problems such as device cost waste, and achieve the effects of reducing system maintenance costs, simple circuit structure, and reducing the amount of switching tubes

Active Publication Date: 2016-05-04
南京超颖新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if each coil is equipped with a rectifier and inverter unit, it will cause a huge waste of device cost

Method used

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  • A wireless charging power supply side circuit with reduced number of switch tubes and its application
  • A wireless charging power supply side circuit with reduced number of switch tubes and its application
  • A wireless charging power supply side circuit with reduced number of switch tubes and its application

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Effect test

Embodiment 1

[0024] Embodiment 1: see figure 1 — image 3 ,in figure 1 , figure 2 , is a circuit schematic diagram of the wireless power transmission device described in the prior art, image 3 It is the circuit diagram of the wireless charging power supply side according to the present invention, image 3 As shown in , the circuit includes a set of rectification inverter circuit and a plurality of primary side coils controlled by it, the rectification inverter circuit includes an AC / DC rectifier and the output terminal of the AC / DC rectifier is connected by n An extended inverter composed of bridge arms, where n≥3, each bridge arm includes two switch tubes, and the lead-out end between the two switch tubes of each bridge arm is connected to one end of the primary side coil, and every two bridge arms The leads Wi and Wj of the arm are connected to a primary coil Wi-Wj, where i≠j charges the primary coil Wi-Wj, and the combination of the leads of n bridge arms is A primary coil is ch...

Embodiment 2

[0031] Embodiment 2: The application occasion suitable for the circuit proposed by the present invention may be a wireless charging desktop. The wireless charging desktop is a power supply device for small and medium-sized devices such as mobile phones, tablet computers, notebook computers, microphones, PDAs, GPS, and monitors. The device itself occupies a certain area, while the coverage area of ​​the receiving coil is smaller than that of the device. Therefore, within a certain area, there is only one primary coil covering a small area for power supply. like Figure 5 As shown, the range shown by the big triangle can be similar to the size of the power receiving device, such as a mobile phone, and the power receiving coil inside the device is similar to the size of a single primary coil. Use the large triangle as a functional unit to divide the entire desktop, such as Figure 6 As shown in the layout, in this way, any position of the device on the desktop will fall into a...

Embodiment 3

[0032] Embodiment 3: The application occasion suitable for the circuit proposed by the present invention can also be a wireless charging highway, where the primary side coil is laid throughout the wireless charging highway, but it is only necessary to place a set of power supply end circuits proposed by the present invention within a certain length. The power supply end circuit is responsible for supplying power to all the primary side coils within this length to form a power supply functional unit. The length of the powered road. When the vehicle is running, it is fixed to one direction at a certain speed. At this time, the power supply circuit, that is, the above-mentioned power supply functional unit, supplies power to the coils one by one in turn, such as Figure 7 shown. At a certain moment, there is only one vehicle entering a certain functional unit. If there is a second vehicle entering, it can be considered as speeding or not driving according to regulations, and no ...

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Abstract

The invention relates to a wireless charging power supply side circuit reducing the number of switching tubes. The wireless charging power supply side circuit reducing the number of the switching tubes is characterized by comprising a rectification inverter circuit and a plurality of primary side coils which are controlled by the rectification inverter circuit. The rectification inverter circuit comprises an AC / DC rectifier. The output end of the AC / DC rectifier is connected with n bridge arms in parallel, wherein n is larger than or equal to 3. Each bridge arm comprises two switching tubes, and the leading-out end between the two switching tubes of each bridge arm is connected with one end of the corresponding primary side coil. The leading-out end Wi and the leading-out end Wj of every two bridge arms are connected with one primary side coil Wi-Wj, wherein i is not equal to j, and the primary side coil Wi-Wj is charged. The leading-out ends of the n bridge arms are combined for charging the primary side coils, wherein the number of the primary side coils can be seen in the specifications.

Description

technical field [0001] The invention relates to the field of circuit design, in particular to a wireless charging power supply side circuit with reduced number of switch tubes and its application. Background technique [0002] Wireless charging technology has been paid more and more attention in people's life due to its safety, convenience, and environmental protection. However, most of the wireless charging systems in the prior art have complex structures. Basically, each set of coils is equipped with a rectifier and inverter unit, and the cost is relatively high. , and will cause a lot of waste of structural components. [0003] Wireless charging technology is committed to cutting off the "last section" of wires that plague people's lives, and will bring great convenience and changes to people's lives. In the smart home of the future, household appliances will be placed freely without being bound by wires, and the wireless charging table will make all smart terminals no l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/10H02J50/90H02J50/40H02J7/00
Inventor 姚辰唐厚君方万孟祥群徐青菁孟祥旺
Owner 南京超颖新能源科技有限公司
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