The internal structure of the DC joint consists of two main parts: the electrode and the insulating material. Electrodes are metal contacts that transmit current through a connector, usually consisting of a positive electrode and a negative electrode. These electrodes are connected to the corresponding contact point of an external power supply or device to achieve the transfer of current. At the same time, the joint also contains insulation, which is a material used to isolate and protect the electrode to prevent current leakage or short circuit.
The insulation material is usually made of silicone, rubber or plastic and has excellent insulation properties and durability to ensure the safety and reliability of the joint.