The invention relates to the technical field of electric vehicle wireless charging, and particularly discloses an electric vehicle wireless charging system for ID authentication based on PDM characteristic waves, when an electric vehicle is parked in a charging area, the system transmits an electric energy signal with charging end ID information to the electric vehicle by controlling the pulse density of a charging end inverter switch, and then the electric vehicle is charged. And the electric vehicle recognizes the ID signal and returns the ID signal of the electric vehicle after being connected with the ID signal, so that identity authentication and communication connection between the electric vehicle and the charging end before charging are realized. Identities (ID) of different charging ends are defined through switching frequencies (namely pulse density) of the switch, different switching frequencies correspond to different ID information, and the method has the advantages of being high in accuracy, easy to detect and the like; based on a wireless electric energy transmission method, the switching frequency of the switch corresponds to different transmission electric energy values, the ID information of the charging end is transmitted to the electric vehicle in an electric energy mode, other extra equipment is not needed in the identity authentication process, the structure is simple, and the cost is saved.
本发明涉及电动汽车无线充电技术领域,具体公开了一种基于PDM特征波进行ID认证的电动汽车无线充电系统,当电动汽车停靠在充电区域后,该系统通过控制充电端逆变开关的脉冲密度,发射带有充电端ID信息的电能信号到电动汽车,电动汽车识别此ID信号并与其进行连接后返还电动汽车自身ID信号,实现电动汽车与充电端充电前的身份认证和通信连接。本发明通过开关切换的频率(即脉冲密度)定义不同充电端的身份ID,不同切换频率对应不同的ID信息,具有准确度高、检测简单等优点;基于无线电能传输的方法,开关切换频率对应不同的传输电能值,将充电端的ID信息以电能的方式传输给电动汽车,在进行身份认证过程中无需其他额外设备,结构简单,节约成本。
Electric vehicle wireless charging system for carrying out ID authentication based on PDM characteristic wave
基于PDM特征波进行ID认证的电动汽车无线充电系统
2023-09-12
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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