Dynamic wireless charging apparatus and parameter acquiring method thereof

A wireless charging and dynamic technology, applied in circuit devices, battery circuit devices, current collectors, etc., can solve the problems of severe fluctuations in transmission power and insufficient anti-offset ability of compensation topology.

Active Publication Date: 2015-12-23
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a device for dynamic wireless charging and its parameter acquisition method, aiming to solve the problem that the

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  • Dynamic wireless charging apparatus and parameter acquiring method thereof
  • Dynamic wireless charging apparatus and parameter acquiring method thereof
  • Dynamic wireless charging apparatus and parameter acquiring method thereof

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Embodiment approach

[0072] The present invention proposes a dynamic wireless charging device suitable for a wide offset range, and its system framework is as follows figure 1 shown. The system mainly includes a DC power supply 11, a high frequency inverter unit 12, a primary side LC filter unit 13, a first compensation unit 14, a power transmitting coil 15, a power receiving coil 21, a second compensation unit 22, an uncontrolled rectification unit 23 and Load 24.

[0073] Wherein, the function of the DC power supply 11 is to provide a stable DC voltage V for the high-frequency inverter unit 12 d1 ; The high-frequency inverter unit 12 inverts the direct current into a high-frequency voltage square wave V ab , whose structure is a full-bridge inverter circuit composed of four switching tubes. The primary side LC filter unit 13 is connected in series between the inverter bridge output terminal a and the first compensation unit 14, and the filter inductor L f and filter capacitor C f Composed i...

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Abstract

The invention discloses a dynamic wireless charging apparatus and a parameter acquiring method thereof. The dynamic wireless charging apparatus comprises an energy emitting module and an energy receiving module. The energy emitting module comprises a high-frequency inversion unit, an LC filter unit, a first compensation unit, and a power emitting coil which are successively connected. The high-frequency inversion unit converts DC power into high-frequency AC power. After the high-frequency AC power is adjusted by the LC filter unit and the first compensation unit, energy is emitted in a high-frequency magnetic field coupling mode. The energy receiving module comprises a power receiving coil, a second compensation unit, and an uncontrolled rectification unit which are successively connected, and converts received high-frequency AC power into DC power supplied to a load. The dynamic wireless charging apparatus may automatically adjust the current of a primary-side power coil according to the mutual inductance coupling degree of the power coil so as to obtain a characteristic maintaining stable output power, is suitable for dynamic wireless charging application occasions with a wide bias, and has high transmission efficiency and a soft switch characteristic. In addition, compensation topology provides a primary side inversion power supply with a zero-load current-limiting protection function.

Description

technical field [0001] The invention belongs to the technical field of wireless power transmission, and relates to a dynamic wireless power transmission device with a wide offset range and a parameter acquisition method thereof, which is suitable for wireless charging occasions where the transmission distance has a certain offset range and the transmission power has a certain stability requirement. Background technique [0002] In recent years, wireless power transmission technology (WirelessPowerTransfer, WPT) and electric vehicle technology (ElectricVehicle, EV) have achieved rapid development. Magnetic coupling wireless power transmission technology transfers energy through the high-frequency alternating magnetic field coupling between power transceiver coils. It is the most promising wireless power transmission technology and has been widely used in low-power portable electronic devices, such as mobile phones and cardiac pacemakers. device etc. With the further improvem...

Claims

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Application Information

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IPC IPC(8): H02J7/02
Inventor 段善旭赵锦波蔡涛丰昊张晓明
Owner HUAZHONG UNIV OF SCI & TECH
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