1. Positive electrode spring plate structure of button batteries
The utility model patent describes a positive electrode spring of a button battery, which adopts a conductive strip bent into a three-dimensional wire frame structure, including an upper pressing part, a side contact part and pins. This design uses less material, has a low cost, and offers long-lasting elasticity, effectively preventing short-circuit problems.
Spring pieces are usually made of copper, steel or iron, and their surfaces may be nickel-plated or tin-plated to enhance electrical conductivity and oxidation resistance.
2. Common Specifications and materials
Button battery contact pieces (such as CR2032 model) are usually made of materials like phosphor bronze, stainless steel (SUS301), or brass, with a thickness range generally ranging from 0.1 to 0.3mm.
Surface treatment includes nickel plating (3-5 microns) or gold plating (1-2 microns) to enhance electrical conductivity and oxidation resistance.
3. Special design improvements
The positive spring piece of a remote control button battery adopts a clamping raised design to increase the contact area with the battery and avoid the problem of poor contact caused by wire contact.
The negative electrode spring may be designed with a protruding part to better support the battery's negative electrode 1.
4. Production Process and Supply
Contact pieces are usually manufactured by stamping process, and high-precision CNC machine tools ensure accurate dimensions.
Suppliers can provide custom-sized (12-20mm) button battery contact spring pieces, supporting OEM/ODM services. Materials can be selected from phosphor bronze, stainless steel, etc., and surface treatments include nickel plating, tin plating, etc
