In the United States, Tesla has established a super large charging station network. Japan auto industry also encourage the construction of CHAdeMO charging station to support the charging of its electric vehicles（EVs）. In contrast, the construction of CCS charging station is somewhat backward. So far, none of the manufacturers who selling CCS charging standard electric vehicles plans to build CCS charging stations.
In Norway, plug-in electric vehicles account for more new car sales than other countries in the world. Now Norway has the world's largest single DC fast charging station.
The rapid development of the charging port market has also driven the development of the spring industry. Although the spring is a small accessory of the charging port, it plays a very important role. In response to the changes of market demand and through several years of investment， research and development, We Zihuoli Spring Co., Ltd. finally made the oblique EVs Charging Coil Spring of charging Port, also known as Ring Spring , as shown,
The advantages of the EVs Charging Spring as follow:
1. Simple structure, small volume, less material and low cost. It meets the requirements of small space and suitable for compact design; The minimum number of parts simplifies the design of the connector.
2. Multi point contact, high concentrated force, almost lossless contact can be realized. Ensure large current carrying capacity, good conductivity, high electric and thermal stability.
3. The contact pressure of each contact point is not high and has good wear resistance.
4. The unique structure makes it have a wide working range. Tolerances are allowed on the contact surface; It has great adaptability to addition error and assembly error. And more suitable for large-scale production.
The coil spring (spring contact) can transmit strong current in the small space. And can also be used as a pure mechanical connection. There is no restriction on its use, and it is suitable for use in a variety of static or dynamic medium and high voltage environments. The size of the spring contact finger and the number of independent coils make the spring suitable for various electrical contact designs. The maximum contact point is the best current carrying capacity, which is suitable for electrical or EMI shielding. Each coil will independently compensate for contact and surface changes, which allows wider tolerances between fittings. Multiple contact points increase the conductivity, and its service temperature is higher than that of the operating temperature, so its service life is longer.
Our spring contact technology is used for power contact in various industries, including medical electronics, medical devices, aerospace, national defense, energy and automobile, etc.
