The invention discloses a three-phase equalization power allocation circuit design of a three-phase alternating current charging pile, and relates to the field of electric vehicle charging, the three-phase equalization power allocation circuit design comprises an IT grounding system, a TN grounding system, a power allocation function relay and a main relay, the IT grounding system is provided with wire inlet ports L1, L2 and L3, and the TN grounding system is provided with wire outlet ports L1, L2 and L3; the TN grounding system is provided with wire inlet ports N, L1, L2, L3 and PE. The power distribution function relay and the main relay are arranged, the power distribution function relay of the power distribution function relay only has a non-load switching function, and therefore the requirement for the performance of the relay is lower than that of the main relay; the cost of the relay can be greatly reduced, the main relay can be used in an on-load switching scene, so that the performance requirement of the main relay is high, the contact gap of the main relay is required to be greater than or equal to 3.0 mm according to related standards, and the electrical service life needs to meet the service life requirement of a rated current on-load switch for 50,000 times.
本发明公开了一种三相交流充电桩的三相均衡功率调配电路设计,涉及电动汽车充电领域,所述三相均衡功率调配电路设计包括IT接地系统、TN接地系统、功率调配功能继电器和主继电器,所述IT接地系统设置有进线端口L1,L2,L3,所述TN接地系统设置有进线端口N,L1,L2,L3,PE。本发明中设置有功率调配功能继电器和主继电器,功率调配功能继电器的功率调配功能继电器只做不带载切换功能,所以对继电器的性能要求相比主继电器的要求低;可以大大降低继电器的成本,而主继电器会用在带载切换的场景,所以主继电器的性能要求较高,按照相关标准,主继电器的触点间隙要求大于等于3.0mm,电气寿命需要满足额定电流带载开关5万次的寿命要求等。
Three-phase equalization power allocation circuit design of three-phase alternating current charging pile
一种三相交流充电桩的三相均衡功率调配电路设计
2023-09-12
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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