Copper End Cap Joined By Tin Brazing

Our assembly of Fog Tin-plated Copper End Caps is brazed by an outer cap and an L-shaped terminal.

1. The caps and contacts are made of copper with 99.9% purity, offering remarkable properties such as high strength, electrical conductivity, fatigue resistance, thermal conductivity, and corrosion resistance.

2. Prior to welding, the copper end caps and terminals must be degreased. The end caps are then secured with a rivet and welded. This ensures that the end cap remains firmly attached to the fuse link, even if the fuse link is not damaged. A controlled welding process is in place to guarantee that the temperature and time are stable, preventing any annealing of the outer cap and contact blade.

3. The matte tin plating offers better welding results and higher temperature resistance.
 

The matte tin-plated copper end caps are a crucial component in ensuring the safety and reliability of various electrical systems. These end caps are used primarily in high rupturing capacity fuses, providing protection for vital components such as EV/HEV battery modules, electrical energy storage, and supercapacitor modules. They are designed with robust construction and high-quality materials, along with advanced plating, to withstand demanding applications.

 

The use of fuses is of utmost importance in new energy vehicles, which rely on high-voltage direct current. To ensure the safety of these systems, both high-voltage and low-voltage protection are implemented, with a typical voltage range of 60-1000 VDC divided into a main and an auxiliary circuit. The main circuit protection handles the overcurrent protection of the battery, charging and discharging, and the vehicle drives circuit, while the auxiliary circuit protection covers components such as air conditioner, DC/DC converter, PTC, air pump, and OBC.

 

We offer a comprehensive range of metal parts for the EV/PV Fuse industry, including copper, beryllium copper, and brass. Our product line includes Copper Caps, Fuse Knives, Cylindrical Body Contact Knives, NH Fuse Links Knives, Copper End Caps, Copper Outer Caps, Copper Slip Cap Fittings, and Copper Pipe End Caps in various sizes. Whether you require a specific size or type of metal part, we have the expertise and resources to meet your needs.

1. Our China factory directly supplies products with an ex-works delivery method, allowing us to pass on 5% profit to our customers.

2. With a lead time of 10-20 days for both samples and mass orders, we are able to meet the demands of our clients.

3. Our company has a long history of successful partnerships with renowned brands such as EATON BUSSMANN, MERSEN, ABB, KEMET, BYD, and SINOFUSE. This experience allows us to offer cost-saving solutions and the latest advancements in technology.

4. Our group boasts strong capabilities, including in-house stamping die, stamping and drawing machines, in-die riveting, robot laser welding, and resistance tin/silver brazing.

Safety Certification:

All tin-plating copper caps comply with the EU RoHS directive, lead-free and halogen-free.

Quality System:

We are approved with international quality management systems such as IATF16949, and ISO9001.

Our tin-plated fuse caps, packaged and delivered, can be stored for up to one year from the date indicated on the packaging label, under the following conditions:

1. Temperature: The ideal temperature range is between -15°C to +30°C, without the presence of condensation.

2. Humidity: The relative humidity should be 85% or less.

3. Avoid Corrosive Gases: The caps should not be exposed to corrosive gases.

4. No Visible Dust: There should be no visible dust in the storage area.

5. Protect from Direct Sunlight: The caps should not be exposed to direct sunlight.

6. Avoid Deformation: No loads should be applied that may cause deformation or degradation of the product.

 

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