The invention relates to a wireless charging technology, in particular to an anti-offset coupling mechanism for wireless charging of an electric vehicle and a control method thereof, a transmitting coil in the coupling mechanism comprises 16 transmitting sub-coils which are arranged in a 4 * 4 array form and divided into 8 coil modules, a short-circuit branch with a short-circuit switch is arranged in each coil module, and the short-circuit branch with the short-circuit switch is connected with the transmitting sub-coils. Current reversing change-over switches are arranged at the two ends of each coil module, in the first coil module, the second coil module, the third coil module, the fourth coil module and the fourth coil module, the multiple transmitting sub-coils are connected in parallel, and a corresponding cut-out switch is arranged on each parallel branch; and the coupling mechanism controls the corresponding short-circuit switch, the cut-out switch and the current reversing change-over switch according to the type and the position of the receiving coil so as to realize the current control of each transmitting sub-coil. The beneficial effects are that access control of different coil combination forms is realized under the condition that switching elements are as few as possible, and switching loss of a system is reduced; different forms of receiving coils can be adapted; and the anti-offset capability of the coupling mechanism is improved.
本发明涉及无线充电技术,具体为一种电动汽车无线充电抗偏移型耦合机构及其控制方法,耦合机构中的发射线圈包括16个发射子线圈且按照4×4的阵列形式排列并划分为8个线圈模块,每个线圈模块的内部设置有带短路开关的短路支路,每个线圈模块的两端设置有电流换向切换开关,在第一线圈模块至第四线圈模块中,多个发射子线圈相互并联,且在每一条并联支路上设置有对应的断路开关;耦合机构根据接收线圈的类型和位置控制对应的短路开关、断路开关和电流换向切换开关实现各个发射子线圈的电流控制。其效果是:在尽量少的开关元件下,实现不同线圈组合形式的接入控制,减少了系统的开关损耗;可适应不同形式接收线圈;提高耦合机构抗偏移能力。
Anti-offset coupling mechanism for wireless charging of electric vehicle and control method of anti-offset coupling mechanism
电动汽车无线充电抗偏移型耦合机构及其控制方法
2023-09-12
Patent
Elektronische Ressource
Chinesisch
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