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What is the role of electric vehicle DC contactor?

Release time:

2022-03-18

In recent years, with the rapid development of new energy vehicles and charging facilities, the market capacity of electric vehicle DC contactors, one of the key electrical components, is also expanding. The power grid needs electric vehicle DC contactors, and new energy equipment and equipment need electric vehicle DC contactors to control.

In recent years, with the rapid development of new energy vehicles and charging facilities, the market capacity of electric vehicle DC contactors, one of its key electrical components, is also expanding. The power grid needs electric vehicle DC contactors, and new energy equipment and equipment need electric vehicle DC contactors to control. In view of the special needs of this emerging industry, how can the design engineers of DC electrical appliances such as automobile design and charging piles choose the right

electric vehicle DC contactor

product for their own design ideal? Let's take a look at the principle, application and product adaptability of electric vehicle DC contactor.

1. Electric Vehicle DC Contactor

Principle

The design scheme of the internal coil of the DC contactor. After the switching power supply is turned on, the current is converted into an electromagnetic field according to the coil. Let the static iron core contain the attraction of the current electromagnet and push the iron core to make contact. If the contact is often turned off, it means an open state. If it is often used, the contact is closed and the two are turned on. When you turn off the power, the attraction of the electromagnet caused by the current effect of the coil will dissipate, and the normally open contact will open.

Application of 2. electric vehicle DC contactor in new energy vehicles and charging piles (machines)

DC charging piles, DC output side of charging station or on-board charger output side. When the contactor is closed, it connects the charging pile to the car. When disconnected, the connection between the charging pile and the outside world is isolated to play a role of safety protection.

How to choose the DC contactor for 3. electric vehicles

1. The choice of DC contactor must be determined according to the type of current required and the net weight of the load. In addition, the current of the key contact in the DC contactor must be calculated by the relative calculation method. If the actual operation of the selected AC contactor is too complicated and must rotate continuously, the current level of the main contact must be reduced by one level.

2. The working voltage of the coil in the DC contactor cannot be the same as the working voltage of the main contact. If there are few household appliances, the wiring is relatively simple, and the rated current is 22020V. If the wiring is complex, in addition to the use of household appliances more, the use of a longer time, you can choose the 110V coil AC contactor.

3. The actual operating time of the DC contactor is the frequency of disconnection. Therefore, if the current is large, the contact hair of the goods will burn. If the required current regulation is too high, be sure to choose a higher-level DC contactor, you can query the rated current of the product on the brand of the product, and then select the corresponding DC contactor product.

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electric vehicle DC contactor

, you can contact us. We will introduce relevant contents from different angles. This way, everyone can be more aware of its characteristics. So as to add good to its use.