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Sensitivity Optimization Method for Metal Object Detection in Electric Vehicle Wireless Charging System
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Bin ZHANG, Chong ZHU, Xi ZHANG
Journal of Power Supply | 2024, 22(4) : 209 - 218
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Journal of Power Supply | 2024, 22(4): 209-218
• Wireless Power Transfer •
Sensitivity Optimization Method for Metal Object Detection in Electric Vehicle Wireless Charging System
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Bin ZHANG, Chong ZHU, Xi ZHANG
Affiliations
  • School of Mechanical and Power Engineering Shanghai Jiao Tong University Shanghai 200240 China
Published: 2024-07-30 doi: 10.13234/j.issn.2095-2805.2024.4.209
Outline
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To improve the metal object detection performance for an electric vehicle wireless charging system, a sensitivity optimization method for the detection coil was proposed. The equivalent electromagnetic model of a rectangular detection coil with a metal object approaching was established. The changing mechanism of the physical parameters of the coil was studied, and a theoretical formula for changes in the parameters of the detection coil which were caused by metal objects of different sizes was obtained. The influence of several configuration parameters on the sensitivity of the detection coil was analyzed, and the configuration of the detection coil was optimized by combining the actual operating conditions of wireless charging. Through the electromagnetic field simulation and experimental verification, the accuracy of the theoretical model was proved. Finally, a metal object detection experiment was carried out in a 3 kW wireless charging system, which verified that the metal object detection system built on the basis of the optimized detection coil can detect metal objects with a size of 25 mm and above. In addition, it had anti-interference capability.

Wireless charging  /  metal object detection  /  sensitivity of detection coil
Bin ZHANG, Chong ZHU, Xi ZHANG. Sensitivity Optimization Method for Metal Object Detection in Electric Vehicle Wireless Charging System[J]. Journal of Power Supply, 2024 , 22 (4) : 209 -218 . DOI: 10.13234/j.issn.2095-2805.2024.4.209
Funding
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  • National Natural Science Foundation of China(52007119)
  • Shanghai Pujiang Program(20PJ1407200)
Appendix
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Year 2024 volume 22 Issue 4
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Article Info
doi: 10.13234/j.issn.2095-2805.2024.4.209
  • Receive Date：2022-01-19
  • Online Date：2025-07-21
  • Published：2024-07-30
Article Data
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History
  • Received：2022-01-19
  • Revised：2022-04-07
  • Accepted：2022-04-11
Funding
National Natural Science Foundation of China(52007119)
Shanghai Pujiang Program(20PJ1407200)
Affiliations
    School of Mechanical and Power Engineering Shanghai Jiao Tong University Shanghai 200240 China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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