A wireless power transfer arrangement (20) for a wireless power transfer across an airgap (9) by inductive coupling, for example for charging the battery (31) of an electric vehicle, includes a primary side (21) with a primary pad (22) for generating a magnetic field (28) into the airgap (9) and a secondary side (24) arranged on the other side of the airgap (9) that picks up the magnetic field (28) and provides the energy received through the magnetic field (28) to the battery (31). The primary side (21) is for example installed at a charging station and the secondary side (24) is comprised by the electric vehicle. In order to control the charging process during the power transfer, a wireless communication channel (38) is provided between the primary (21) and the secondary (24) by means of two wireless transceivers (35, 36). According to the invention, the wireless transceivers (35, 36) are adapted such that their communication range is less than twice a largest spatial extent of the primary pad. In this way, the communication between the charging station and the vehicle may not be received by other charging stations or vehicles located at the same charging area. And if the other vehicles and other charging stations of the same charging area are adapted according to the invention as well, their communication does not interfere with each other or otherwise disturb each other in another way such that a complex and laborious pairing process may be avoided.
一种无线电力传送布置(20),用于通过电感耦合跨气隙(9)进行无线电力传送,例如以用于对电动车辆的电池(31)进行充电,所述无线电力传送布置(20)包括具有用于生成磁场(28)到气隙(9)中的初级焊盘(22)的初级侧(21),以及布置在气隙(9)的另一侧的次级侧(24),该次级侧(24)拾取磁场(28)并将通过磁场(28)接收的能量提供给电池(31)。初级侧(21)例如安装在充电站处,并且次级侧(24)由电动车辆所包括。为了在电力传送期间控制充电过程,借助于两个无线收发器(35、36)在初级(21)和次级(24)之间提供无线通信信道(38)。根据本发明,无线收发器(35、36)被适配为使得它们的通信范围小于初级焊盘的最大空间程度的两倍。以这种方式,充电站和车辆之间的通信可能不被位于相同充电区域的其它充电站或车辆所接收。并且如果相同充电区域的其它车辆和其它充电站也根据本发明来适配,则它们的通信不彼此干扰或以其它方式彼此扰动,使得可以避免复杂且费力的配对过程。
Wireless power transfer arrangement
无线电力传送布置
2021-09-07
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |