适用400 V或800 V电池的电动汽车无线充电系统的可重构拓扑
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福州大学电气工程与自动化学院福州350108

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TH701

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国家自然科学基金青年项目(52407197, 52107183)、福建省自然科学基金项目(2022J06011)资助


Reconfigurable topology for electric vehicle wireless charging systems tolerating 400 V or 800 V battery
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College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, China

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    摘要:

    随着越来越多的电动汽车公司加入无线电力传输的行列,互操作性问题逐渐变得明显。除了常见的耦合结构、补偿网络和通信协议互操作性问题外,电池电压互操作性问题也逐渐显现出来,即各种型号的电池电压等级不同。针对现有电动汽车动力电池的电池电压等级,额定电压可以主要分为400和800 V两种。考虑到公共无线电能传输设施的互操作性,电动汽车无线电能传输系统必须在相同的功率水平下有效兼容400和800 V的电池电压水平。为了满足实际应用场景,提出了一种具备电压等级互操作性的可重构拓扑结构。该系统采用了两个完全堆叠的单极型线圈作为磁耦合结构,并通过开关切换的方式实现相同功率水平下两种不同电压等级的输出。通过建立数学模型对所提系统进行分析建模,后续通过搭建了一个1.3 kW的小尺寸实验样机,对所提可重构拓扑结构功能进行了验证。结果表明,所提可重构拓扑结构具备在输出功率水平为1.3 kW时输出200和400 V的能力,并且系统最大直流-直流效率分别为90.97%和95.51%。最后,在所搭建的实验样机基础上对所提结构的偏移性能进行了测试与验证,结果表明所提系统在±100 mm的偏移范围内,直流-直流效率均高于90%。

    Abstract:

    As more electric vehicles (EV) companies jump on the bandwagon of wireless power transmission, interoperability issues are becoming increasingly apparent. In addition to the common problems of coupling structure, compensation network and communication protocol interoperability, battery voltage (BV) interoperability issues are also gradually emerging, that is, different battery voltage levels of various models. For the BV level of the existing EV power battery, the rated voltage can be mainly divided into 400 and 800 V. Considering the interoperability of public radio energy transmission facilities, EV radio energy transmission systems must be effectively compatible with 400 and 800 V BV levels at the same power level. A reconfigurable topology with the BV interoperability is proposed. The device uses two completely stacked unipolar coils as magnetic coupling structures, enabling two different output voltages under the same power level by switching. The proposed system is analyzed and modeled by establishing a mathematical model, followed by the development of a 1.3 kW downscaled experimental prototype to verify the function of the proposed reconfigurable topology. The results show that the system can switch between 200 and 400 V output voltages while maintaining an output power of 1.3 kW. The maximum system direct current-direct current (DC-DC) efficiency is 90.97% and 95.51%, respectively. Finally, to assess the migration performance of the proposed structure, additional testing was conducted using the experimental prototype. The results show that the DC-DC efficiency of the proposed system is higher than 90% in the migration range of ±100 mm.

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刘超,周明珠,陈孝莺,张艺明.适用400 V或800 V电池的电动汽车无线充电系统的可重构拓扑[J].仪器仪表学报,2025,46(3):242-249

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  • 在线发布日期: 2025-05-28
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