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Theoretical and Experimental Study on Electromagnetic Shielding Structure Design of Electric Vehicle Wireless Charging System
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Zhongying Tian1, Lihua Zhu2, Yuan Li1
Automobile Technology | 2024, (9) : 51 - 56
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Automobile Technology | 2024, (9): 51-56
Theoretical and Experimental Study on Electromagnetic Shielding Structure Design of Electric Vehicle Wireless Charging System
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Zhongying Tian1, Lihua Zhu2, Yuan Li1
Affiliations
  • 1 Tiangong University, Tianjin 300387
  • 2 Tianjin Key Laboratory of New Energy Power Conversion, Transmission and Intelligent Control, Tianjin 300384
Published: 2024-09-24 doi: 10.19620/j.cnki.1000-3703.20230854
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In order to study the influence of shielding structure on electvical vehicles wireless charging system, based on the theory of shielding effectiveness, this paper establishes a relationship model between the thickness of the shielding material and its parameters. Firstly, the shielding effectiveness of single-layer shielding materials with different thicknesses and different shielding materials on the magnetic field is analyzed, and the numerical solutions are compared with the analytical solutions to preliminarily validate the accuracy of the established shielding material thickness model. Based on this, a composite wireless charging shielding structure with the minimum thickness is proposed under the premise of ensuring electromagnetic safety and verified by electromagnetic tests. The results show that when a combination of 0.05 mm ultra-thin silicon steel and 2.52 mm ferrite is used as a dual-layer shielding, the magnetic field intensity reaches the safety limit, and the transmission efficiency reaches 90.92%. Compared with the traditional ferrite and aluminum composite shielding structure, the thickness of the shielding structure is reduced by 1.95 mm.

Electric vehicles  /  Wireless charging  /  Electromagnetic shielding  /  Shield thickness  /  Theory on design
Zhongying Tian, Lihua Zhu, Yuan Li. Theoretical and Experimental Study on Electromagnetic Shielding Structure Design of Electric Vehicle Wireless Charging System[J]. Automobile Technology, 2024 , (9) : 51 -56 . DOI: 10.19620/j.cnki.1000-3703.20230854
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doi: 10.19620/j.cnki.1000-3703.20230854
  • Online Date：2025-12-22
  • Published：2024-09-24
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Affiliations
    1 Tiangong University, Tianjin 300387
    2 Tianjin Key Laboratory of New Energy Power Conversion, Transmission and Intelligent Control, Tianjin 300384
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表12种不同金属材料的力学参数
科
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Number of
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Number of
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Percentage of
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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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