电动汽车无线充电系统DDDQ型磁耦合结构研究

doi:10.19562/j.chinasae.qcgc.2025.06.001

Abstract

Abstract:

The magnetic coupling mechanism， as the key component in the wireless charging system for electric vehicles， greatly determines the overall performance of the system. In this paper， a double D double Quadrature （DDDQ） magnetic coupled structure is proposed， which can not only improve the anti-offset capability of wireless charging system through coupling and complementing of the coils， but also be compatible with static wireless charging scenarios and dynamic wireless charging scenarios. To verify the performance of the proposed coupling structure， in this paper firstly simulation models for both static and dynamic wireless charging systems are established for testing and analysis. The simulation results show that the DDDQ magnetic coupling structure enhances coupling capability under offset conditions in static wireless charging and reduces coupling fluctuations in dynamic wireless charging. Secondly， the LCC-S compensation topology is chosen to compensate the power of system， and the output characteristics of static wireless charging system with different magnetic coupled structures are built and compared respectively， it is shown that wireless charging system based on the DDDQ magnetic coupled structure can still maintain better transmission capability in the case of misalignment. Then， the DDDQ magnetic coupled structure is applied to dynamic wireless charging scenario， and efficient resonant transmission is realized after configuring parameters. Finally， multiple test simulation points inside and outside the vehicle are selected according to relevant standards to evaluate the electromagnetic safety of the system in different scenarios. The results show that the DDDQ magnetic coupling structure meets electromagnetic safety standards.

Key words: electric vehicles, wireless charging, compensation circuit topology, magnetic coupled structure, electromagnetic safety

Yang Yang,Zhi Zhang,Bo Xu,Yang Dong. Research on the DDDQ Magnetic Coupled Structure of the Wireless Charging System for Electric Vehicles[J].Automotive Engineering, 2025, 47(6): 1007-1021.

Figures/Tables 29

References 28

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线圈形状	横向抗偏移性	纵向抗偏移性	复杂度	静动态兼容性
CP	差	差	低	无
DD	差	较差	较低	无
DDQ	较差	较差	较高	无
BP	较差	较差	中	无
QD	中	中	较高	无
QDPD	较好	较好	高	无
QRPD	较好	较好	高	无

线圈形状	结构名称	尺寸/mm	数量
CP	CP	R=500×4	15匝
CP	铁芯	245×15×15	12根
DDQ	DD	1000×500×4	15匝
	Q	500×500×4	15匝
	铁芯	1100×15×15	3根

线圈形状	结构名称	尺寸/mm	数量
DDDQ	DD	1000×500×4	15匝
	YR1	750×500×4	15匝
	YR2	750×500×4	15匝
	铁氧体	1100×15×15	6根

结构参数	数值	结构参数	数值
底板长度	500 mm	支柱高度	90 mm
底板宽度	200 mm	顶板长度	400 mm
底板高度	20 mm	顶板宽度	200 mm
支柱长度	100 mm	顶板高度	10 mm
支柱宽度	200 mm	线圈匝数	10匝

参数	数值	参数	数值
L_T	530 μH	R_T	47 mΩ
L_X	530 μH	R_X	47 mΩ
L₁	0.64 μH	R_L	50 Ω
C_T	57 nF	M_X	129 μH
C₁	7.48 nF	U_in	220 V
C_X	6.6 nF

Research on the DDDQ Magnetic Coupled Structure of the Wireless Charging System for Electric Vehicles

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参数	数值	参数	数值
L_T	695 μH	R_T	100 mΩ
L_X	695 μH	R_X	100 mΩ
L_YR1/_YR2	216 μH	R_{YR1/ YR2}	70 mΩ
L₁	94.5 μH	R_L	50 Ω
C_T	37 nF	M_X	199 μH
C₁	5.83 nF	M_YR1	1 μH
C_X	5.04 nF	U_in	220 V
C_{YR1/ YR2}	8.34 nF

参数	数值	参数	数值
L_T	685 μH	R_T	100 mΩ
L_X	685 μH	R_X	100 mΩ
L_YR1/_YR2	485 μH	R_{YR1/ YR2}	70 mΩ
L₁	100 μH	R_L	50 Ω
C_T	35 nF	M_X	178 μH
C₁	5.2 nF	M_YR1	0.1 μH
C_X	4.6 nF	M_TR2	0.1 μH
C_{YR1/ YR2}	8.7 nF	U_in	220 V

参数	数值	参数	数值
L_{T1/ T2}	178 μH	M_D1-_X	72 μH
L_D1/D2	44.8 μH	M_D1-YR1	5 μH
C_D1/D2	26.3 nF	M_D2-_X	72 μH
R_D	10 mΩ	M_D2-YR1	5 μH

参数	数值	参数	数值
L_{T1/ T2}	182 μH	M_D1-YR1	22 μH
L_D1/D2	14.4 μH	M_D1-YR2	14 μH
C_D1/D2	21 nF	M_D2-_X	0.5 μH
R_D	10 mΩ	M_D2-YR1	5 μH
M_D1-_X	1 μH	M_D2-YR2	10 μH

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