2, the spring is exposed, the environment is easy to corrode the spring, thus reducing the elastic force, and it is easy to cause short circuit when the probes are closely arranged;
3. The ear piece is not fixed, and it is easy to touch other bare wires around it, resulting in a series of security risks;
4. This welding method needs a lot of manpower, resulting in very low output of equipment production.
5. Both the probe and the needle sleeve are metal at the same time, which leads to the friction between metal and metal and produces metal powder, which is the nemesis of lithium battery. It is forbidden to expose metal powder in the lithium battery production workshop.
For more probe related products, please search Baidu/Dongguan/Jingcheng/Industry. I hope I can help you!