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A receiver circuit for wireless charging and a vehicle using the circuit

A wireless charging and receiving end technology, applied in battery circuit devices, charging stations, electric vehicles, etc., can solve the problem of high voltage of the filter capacitor and achieve the effect of protection from damage

Active Publication Date: 2019-12-06
XJ POWER CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a receiving end circuit for wireless charging, which is used to solve the problem that the voltage of the filter capacitor is too high when the load is suddenly removed during the charging process

Method used

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  • A receiver circuit for wireless charging and a vehicle using the circuit
  • A receiver circuit for wireless charging and a vehicle using the circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] An embodiment of a receiver circuit for wireless charging of the present invention:

[0025] A receiver circuit for wireless charging, including a resonant module, a rectifier module and a filter capacitor, the resonant module includes a resonant inductance and a resonant capacitor, and is connected to the AC side of the rectifier module, and the filter capacitor is connected to the rectifier module connected to the DC side and used to connect to the load, and also includes a protection branch connected between the resonant module and the AC side of the rectifier module, connected to the DC side of the rectifier module, and used for parallel connection with the filter capacitor Protect the switch tube and the detection drive circuit; the protection branch includes a first branch and a second branch connected in parallel, wherein a switch tube is provided on the first branch, and a protection inductor is provided on the second branch; during normal operation , the protec...

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Abstract

The invention discloses a receiving end circuit for wireless charging and a vehicle using the same. The receiving end circuit comprises a resonance module, a rectifier module and a filtering capacitor. The resonance module comprises a resonant inductor and a resonant capacitor, and is connected with the AC side of the rectifier module; and the filtering capacitor is connected with the DC side of the rectifier module. The receiving end circuit also comprises a protection branch connected between the resonance module and the AC side of the rectifier module, a protection switch tube connected atthe DC side of the rectifier module and connected in parallel with the filtering capacitor, and a detection driving circuit. The protection branch comprises a first branch and a second branch. The first branch is provided with a switching switch tube; and the second branch is provided with a protection inductor. During normal working, the protection switch tube is cut off, the first branch is connected, and the second branch is bypassed; and when a protection effect is achieved, the protection switch tube is connected, the first branch is disconnected, and the second branch is connected in series in the circuit. The problem of capacitor overvoltage due to sudden unloading of the load in the charging process is solved.

Description

technical field [0001] The invention relates to the field of electric vehicle charging, in particular to a receiver circuit for wireless charging and a vehicle using the circuit. Background technique [0002] Wireless charging of electric vehicles is an emerging technology in recent years, which can realize the charging of electric vehicles without charging cables. A device based on wireless power transmission technology refers to a device that transmits power without the need for metal wires to connect the transmitting end and the receiving end of the power. The electric spark that may be generated when the switch is contacted and closed during the process, the application of wireless power transmission technology in places where fireworks are strictly prohibited is safer and more reliable. As an important branch of wireless power transmission technology, magnetic coupling resonant wireless power transmission technology has the advantages of longer transmission distance, h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J7/02H02H7/16B60L53/122
CPCH02H7/16H02J5/005H02J7/025Y02T10/70Y02T10/7072Y02T10/72Y02T90/14
Inventor 陈天锦黄栋杰范金焰邓思维张滨曹亚韩海伦
Owner XJ POWER CO LTD
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