Metal foreign matter detection method and device, wireless charging system and electric vehicle

A metal foreign body and foreign body detection technology, applied in radio wave measurement systems, electric vehicles, measuring devices, etc., can solve the problems of low detection efficiency and poor detection flexibility of metal foreign bodies, and achieve improved detection flexibility, good detection effect, and improved detection. The effect of detection efficiency

Pending Publication Date: 2021-02-02
HUAWEI TECH CO LTD
View PDF8 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a method and device for detecting metal foreign objects, a wireless charging system, and an electric vehicle, which can solve the problems of low detection efficiency and poor detection flexibility of metal foreign objects in related technologies. The technical solution is as follows:

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Metal foreign matter detection method and device, wireless charging system and electric vehicle
  • Metal foreign matter detection method and device, wireless charging system and electric vehicle
  • Metal foreign matter detection method and device, wireless charging system and electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] The metal foreign object detection method and device, wireless charging system, and electric vehicle provided by the embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0058] figure 1 It is a structural diagram of a wireless charging system provided by an embodiment of the present invention. refer to figure 1 , the wireless charging system may include: a power receiving device 10 (ie, a receiving end) and a power transmitting device 20 (ie, a transmitting end). The power receiving device 10 may be set in a device to be charged, and the device to be charged may be an electric vehicle or an electric robot or other electrically driven device. For example, figure 1 The shown device to be charged is an electric vehicle, and the power receiving device 10 is integrated at the bottom of the electric vehicle. The power transmitting device 20 can be set in areas such as wireless charging stations, wireless cha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a metal foreign matter detection method and device, a wireless charging system and an electric vehicle, and relates to the field of wireless charging. An excitation source in the metal foreign matter detection device can drive transmitting coils in coil groups to generate a detection magnetic field, so that the detection coils in the coil groups can generate an induction signal in the detection magnetic field. Since a power transmitting coil is not needed to provide a detection magnetic field, the detection efficiency and the detection flexibility of metal foreign matters are effectively improved. Moreover, each coil group comprises a plurality of detection coils, and one or more parameters of the structures of the plurality of detection coils and the arrangement positions of the plurality of detection coils on the arrangement plane of the coil group are different, so that a foreign matter detection circuit can detect the metal foreign matters according to induction signals generated by the plurality of detection coils, the detection accuracy of the metal foreign matters is improved, and a good detection effect is achieved.

Description

technical field [0001] The present application relates to the field of wireless charging, in particular to a metal foreign object detection method and device, a wireless charging system, and an electric vehicle. Background technique [0002] Wireless charging (wireless power transmission, WPT) is a technology that uses coupled electromagnetic fields as the medium to transfer electric energy to charge the on-board power supply of electric vehicles. A wireless charging system generally includes: power transmitting equipment installed on the ground or underground, and power receiving equipment installed at the bottom of the electric vehicle. The power transmitting coil in the power transmitting device and the power receiving coil in the power receiving device can transfer energy to each other through electromagnetic mutual induction. [0003] When there is a metal foreign object in the area where the ground power transmitting coil is located, the metal foreign object will be h...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02J50/60G01V3/11B60L53/124
CPCH02J50/60B60L53/124G01V3/104Y02T10/70Y02T10/7072Y02T90/14
Inventor 陈双全肖辅荣毛云鹤舒为亮曾晓生
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap