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Wireless energy switching circuit, wireless charging chip and electronic equipment

A technology of wireless energy and switching circuits, applied in the direction of rechargeable batteries/devices, circuit devices, electrical components, etc., can solve the problems of high manufacturing cost and large occupied volume, and achieve low manufacturing cost, small occupied volume and high practicability Effect

Active Publication Date: 2021-01-01
SHENZHEN INJOINIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application provides a wireless energy switching circuit, wireless charging chip and electronic equipment, in order to solve the problems of high manufacturing cost and large occupied volume in the traditional multi-surface wireless charging technology. Users can choose the charging surface at will, which has the advantages of low manufacturing cost and large occupied volume Small advantages, convenient and practical, good user experience

Method used

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  • Wireless energy switching circuit, wireless charging chip and electronic equipment
  • Wireless energy switching circuit, wireless charging chip and electronic equipment
  • Wireless energy switching circuit, wireless charging chip and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] refer to figure 1 , this embodiment provides a wireless energy switching circuit, including an AC output port M1 and at least two energy conversion circuits (shown as energy conversion circuit 1 and energy conversion circuit N, where N is a positive integer greater than 1), the AC output The port M1 is respectively connected to each energy conversion circuit through a shared port, and each energy conversion circuit includes:

[0035] The wireless energy receiving module M5, the wireless energy receiving module M5 includes a first coil inductance L1, the wireless energy receiving module M5 is used for receiving energy from the wireless energy transmitting device M6, and generating a coupled AC voltage.

[0036] Among them, the wireless energy transmitting device M6 is provided with a transmitting coil inductance L_TX, when the distance between the first coil inductance L1 and the transmitting coil inductance reaches the conventional charging height (3~8mm), the first coi...

Embodiment 2

[0125] refer to Figure 10 , this embodiment provides a wireless charging chip, including the wireless energy switching circuit in Embodiment 1 above, and also includes a back-end processing circuit, the back-end processing circuit includes a rectification circuit and a control circuit, and the rectification circuit is connected to the The AC output port M1 and the load, the control circuit is connected to the rectification circuit;

[0126] The control circuit is used to complete the near-field communication protocol between the wireless charging chip and the external wireless energy transmitting device M6, and the rectifier circuit is used to convert the resonant AC voltage of the AC output port M1 into a DC output voltage, and pass the The DC output voltage supplies power to the load.

[0127] Wherein, the load refers to the load generated by the output stage circuit of the receiving end, which can be understood as battery or system loss.

[0128] It should be noted that ...

Embodiment 3

[0133] The embodiment of the present application further provides an electronic device, the electronic device includes the wireless charging chip described in the foregoing embodiment 2.

[0134] Specifically, many electronic products with a near-field wireless charging function can use the wireless charging chip in Embodiment 2, refer to Figure 12 , taking the True Wireless Stereo (TWS) earphone charging compartment as an example for illustration. The TWS earphone charging compartment includes the wireless charging chip in Example 2. Since the overall structure of the TWS earphone charging compartment is that its bottom surface and the front and rear sides are relatively flat , these three surfaces are suitable as charging surfaces for wireless charging, so the wireless energy receiving module M5 is set on these three surfaces, and then share a set of rectification circuit and control circuit.

[0135] When any one of the front, back and bottom of the TWS earphone charging c...

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PUM

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Abstract

The present application provides a wireless energy switching circuit, including an AC output port M1 and at least two energy conversion circuits. The energy of the wireless energy transmitting device M6, and through the resonance control module M3 automatically switch the connection state of the resonance module M2, and automatically identify the energy conversion circuit in the working state, so that it can provide energy to the AC output port M1, while other not in the working state The energy conversion circuit is in a stopped state; the wireless energy switching circuit provided by this application can share the same set of back-end processing circuits when used in multiple integrations, which improves the practicability of the multi-coil charging chip and reduces the cost and area of ​​the device.

Description

technical field [0001] The present application belongs to the technical field of near-field wireless charging, and in particular relates to a wireless energy switching circuit, a wireless charging chip and electronic equipment. Background technique [0002] In the electronic equipment industry, wireless charging technology is widely used, such as charging compartments for mobile phones, tablet computers, and Bluetooth headsets. Because of the low wear rate of equipment and the characteristics of instant charging, electronic equipment with good wireless charging functions are subject to The majority of users are welcome. [0003] With the increasing demand of consumers for wireless charging functions, in view of the current problem that electronic devices can only be wirelessly charged on a specific side, if electronic devices can meet the needs of wireless charging on both sides or even multiple sides at the same time, it will be greatly improved. Ease of use and user exper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J50/80H04R1/10
CPCH02J50/12H02J50/80H04R1/1025
Inventor 陈鑫
Owner SHENZHEN INJOINIC TECH