First, the quality and cost of connectors will be directly determined by which contact form is chosen when designing high current contacts for new energy vehicles. There are three kinds of contact types: leaf type, leaf spring type and linear spring type.
The socket of the leaf type is cylindrical slotted and closed. The hole is processed with beryllium bronze wire (rod). The price of raw material is expensive, the process of subsequent closing is difficult to control, the consistency of product quality is difficult to guarantee, and the cost is high.
New energy car connectors will heat up during use. There is contact resistance in the intercalated contact part of the connector, the greater the contact resistance, the greater the power loss, the higher the temperature of the contact, and the lower the reliability. In the new energy automobile connector, heat is generated in the use process, the contact resistance is in contact with the plug in the connector, the greater the contact resistance, the greater the power loss, the higher the temperature of the contact, and the lower the reliability. When designing, it is necessary to avoid damage to insulation material in connectors due to excessive use temperature, reducing its insulation properties, even burning out becoming invalid, and decreasing in elasticity after heating, forming insulating films in the contact area.
Not only high-voltage and large current connectors, but also precision resistors play an important role in automotive vehicles. Microhm provide various AECQ200 qualified resistors, such as MMS shunts, MVR precision resistors and metal foil resistors NMS series and MPR series.
