Constant current-constant voltage composite topology-based deviation-resistant battery wireless charging system

A battery wireless and charging system technology, applied in battery circuit devices, electric vehicle charging technology, charging stations, etc., can solve problems such as complex design, improve efficiency, good anti-offset ability, and achieve the effect of soft switching

Active Publication Date: 2019-04-12
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some combined topologies with good anti-offset ability realize constant current-constant voltage output, and their design is relatively complicated

Method used

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  • Constant current-constant voltage composite topology-based deviation-resistant battery wireless charging system
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  • Constant current-constant voltage composite topology-based deviation-resistant battery wireless charging system

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Embodiment Construction

[0030] The technical solution of the invention will be described in detail below in conjunction with the accompanying drawings.

[0031] The anti-offset battery wireless charging system based on the constant current-constant voltage composite topology disclosed by the present invention is as follows: figure 1 As shown, it includes: a high-frequency full-bridge inverter circuit 1, a primary side compensation network 2, a loosely coupled transformer 3, a secondary side compensation network 4, a constant current-constant voltage mode switching network 5, and a full bridge rectification filter circuit 6.

[0032] The high-frequency full-bridge inverter circuit 1 includes a first power tube Q 1 , the third power tube Q 3 Composed of a bridge arm and the second power tube Q 2 , the fourth power tube Q 4 Another bridge arm composed of the first power tube Q 1 , the third power tube Q 3 The connection point is the middle point A of the bridge arm, and the second power tube Q 2 ,...

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Abstract

The invention discloses a constant current-constant voltage composite topology-based deviation-resistant battery wireless charging system. First constant current output and then constant voltage output, which are required by the battery charging process, are provided, and the constant current-constant voltage composite topology-based wireless charging system is applicable to a wireless charging occasion of an electric vehicle battery. The system comprises a high-frequency full-bridge inversion circuit, a primary compensation network, a loose coupling transformer, a secondary compensation network, a constant current-constant voltage switching network and a full-bridge rectification filtering circuit. The composite topology is used for performing constant current-contact voltage mode conversion by the constant current-constant voltage switching network placed at a secondary side, first deviation-resistant constant current output and then deviation-resistant constant voltage output in irrelevant to a load are achieved under a special frequency, complicated communication between an emission end and a receiving end of the wireless charging system is prevented, control is simplified, nearly-zero reactive power circulation of the circuit and soft switch of a switch device are achieved, the constant power output is maintained, and the wireless charging system has favorable deviation-resistant capability.

Description

technical field [0001] The invention discloses an offset-resistant battery wireless charging system based on a constant current-constant voltage composite topology, relates to battery wireless charging technology, and is suitable for electric vehicle battery wireless charging occasions. Background technique [0002] Wireless charging technology (Wireless Power Transfer, WPT) is convenient, safe and reliable because there is no electrical and mechanical connection between the power supply end and the power receiving end. At present, Inductive Power Transfer (IPT) technology is the most widely used WPT technology and has great research value. [0003] During the whole battery charging process, the equivalent load of the battery changes in a large range, and the required constant current and then constant voltage output are achieved within a wide load range and zero reactive power circulating current or zero input phase angle ( The control means adopted by Zero Phase Angle (ZP...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J50/10B60L53/12
CPCH02J7/025H02J50/10H02M1/0058Y02T10/72
Inventor 曲小慧王笃乐
Owner SOUTHEAST UNIV
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