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Wireless charging device of small-sized electronic equipment

A technology for electronic equipment and wireless charging, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problem of a certain gap between output power and output power, and achieve the effect of wide application, simple structure and clear thinking

Active Publication Date: 2012-07-04
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effective wireless charging distance of these products is very short (within 1cm), that is, the device to be charged is required to be in close contact with the transmitting device (that is, the charging board), and the output power is mostly different from that of wired charging.

Method used

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  • Wireless charging device of small-sized electronic equipment
  • Wireless charging device of small-sized electronic equipment
  • Wireless charging device of small-sized electronic equipment

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Embodiment Construction

[0101] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0102] First, set the figure 1 The type of electronic components used in each module is described.

[0103] The external crystal oscillator is a 16.000MHz crystal oscillator.

[0104] The frequency divider uses a piece of CD4060.

[0105] The class D power amplifier driver chip uses TPS28225.

[0106] The MOS tube of the class D power amplifier is CSD17307.

[0107] The main control unit adopts STC12C5A60S2_44 single-chip microcomputer.

[0108] The level conversion...

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Abstract

The invention discloses a wireless charging device of small-sized electronic equipment, which mainly comprises an emission device and a receiving device, wherein the emission device comprises an external crystal oscillator, a frequency divider, a D-type power amplifier driving chip or a mutual inductance coupler, a D-type power amplifier module, a resonant filter circuit, an emission coil, a level switching module, a level detecting module, a control module, an indicator lamp and a buzzer; and the receiving device comprises a receiving coil, a receiving-end impedance matching network, a rectification filter module and a voltage stabilizing module. The wireless charging device provided by the invention can be applied to carrying out wireless charging on all low-power (5 W or less) electronic equipment including mobile phones, MP3 (Moving Picture Experts Group Audio Layer-3) players, MP4 (Moving Picture Experts Group Audio Layer-4) players, cameras and the like, thereby realizing that certain voltage and power are supplied to charge or supply power in a distance range meeting a design requirement. The wireless charging device of the small-sized electronic equipment has the advantages of simple structure, wide application, capability of efficiently charging in a certain distance, safety and no radiation, and the like.

Description

technical field [0001] The invention relates to a wireless charging device for small electronic equipment, in particular to a new type of high-efficiency wireless charging system with charging / standby / overload / short-circuit indication, which can be used for mobile phones, MP3, MP4 and cameras with low power (5W and The following) wireless charging of electronic equipment, in order to provide a certain voltage and power within the distance range required by the design to charge or power it. Background technique [0002] Wireless charging is a very popular research direction in recent years, from the early inductive electric toothbrushes and electric shavers that can charge wirelessly to the Powermat wireless charging kit that can charge mobile phones later. Nowadays, there are many brands of wireless chargers on the market, which have greatly improved in terms of charging power, charging efficiency, and ease of use. On September 1, 2010, the world's first standardization org...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/02
Inventor 崔铁军周永春刘硕陈林辉周小阳杨艳侯宏民李鹏
Owner SOUTHEAST UNIV
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