1-Products Name: Copper Cap Contact for Fast Acting EV Fuse
2-Base Material:
(1)Red Copper Stamping Parts:99.99% Copper T2Y2(SECu/C1100) ,%IACS≥97,HV:80~110s;
3-Surface Treatments:
(1)Silver plating
(2)Bright tin plating
(3)Lead-free fog tin plating
(4)Nickel plating
(5)Ultrasonic cleaning
4-Free Samples:10-50pcs is allowed
5-Lead Time:Orders 7-10days,Samples 20-25days(including the tooling/die production of Copper Stamped Part);
6-Packing: Plastic inside and carton/pallet outside
7-Certifications: ISO9001,IATF16949,RoHS,REACH,etc.
8-Production Capacity: 50,000,000 pcs/month
9-Applications:PV Fuse,EV Fuse,PDU Fuse,Energy Storage Fuse,UPS DC Links,NH Fuse,BS Fuse,Fast Fuse,etc.
The base material of Fuse Contact T2Y2 Red Copper characteristics
National standard copper belt T2Y2 (Japanese standard copper model C1100) is also known as pure copper, copper purity ≥99.9%. The red copper of Fuse Terminal Contact has good thermal conductivity, processability, ductility, corrosion resistance and weather resistance. Copper Contact Terminal can be used in fuse link, capacitors, relays, contactors, circuit breakers and other electrical industries.
1. T2Y2 copper of the Fuse Terminal has good electrical conductivity, thermal conductivity, corrosion resistance and processing properties, and can be welded and brazed.
2. The red copper of Fuse L-type Termial contains less impurities that reduce electrical and thermal conductivity. The electrical conductivity and thermal conductivity for red copper of Securing Lug (Fixing Slot) are second only to silver, and are widely used in the production of electrical and thermal conductivity equipment and chemical industries.
3. Red copper of Copper Securing Lug (Fixing Slot) has good weldability. Xiamen China Apollo selects high-quality T2Y2 copper to produce copper fuse terminals, which can be processed into various semi-finished products and finished products Fuse Contact by cold and thermoplastic processing.
Analysis of the Reasons for Poor Brazing Fuse Contact Cap Quality
1. Poor filling, some gaps are not filled,reasons as below:
(1) The joint of the Copper Cap and Contact design is unreasonable, the assembly gap is too large or too small, and the parts are skewed during assembly.
(2) The flux is not suitable, such as poor activity, too large difference between the melting temperature of the flux and the solder, and poor ability of the flux to fill the gap; or the gas purity is low during gas shielded brazing.
(3) Improper selection of solder Copper End Caps and Fuse Contact, such as poor wetting of solder and insufficient amount of solder.
⑷ Improper placement of solder Cap Copper and Contact.
⑸The preparation work of the Custom Copper Caps and Fuse Contact before brazing is not good, such as dirty cleaning.
⑹ The brazing temperature of the Copper End Cap and Fuse Contact is too low or the distribution is uneven.
2. Brazing seam pores,reasons as below:
(1) Improper selection of joint gap for End Cap Copper and Fuse Terminal.
(2) The parts of Copper Metal End Cap and Fuse Contact are not cleaned before brazing.
(3) The flux removal effect or the protective gas removal effect is weak.
⑷ During brazing of Copper End Cap Fitting, the solder releases gas or the solder is overheated.
3. Brazing seam slag inclusion,reasons as below:
⑴The amount of flux used is too much or too little.
(2) Improper selection of joint Copper Outer Cap clearance.
(3) Solder fills the joints from both sides of the joint Copper Slip Cap.
⑷ The melting temperature of the solder Copper Slip Cap Fitting and the flux does not match.
⑸ The proportion of flux is too large.
⑹ Uneven heating.
4. Brazing seam cracking,reasons as below:
(1) Due to the different thermal expansion coefficients of dissimilar base metals Copper Outer Cap, the internal stress formed during the cooling process is too large.
(2) The brazing heating of the same material Copper End Plate is uneven, resulting in inconsistent shrinkage during the cooling process.
(3) When the solder solidifies, the parts Copper End Caps Round move mutually.
⑷ The crystallization temperature interval of the solder is too large.
⑸The brazing seam is too brittle.
5. Solder loss,reasons as below:
(1) The brazing of Copper End Cap Solder Fittings temperature is too high or the holding time is too long.
(2) Improper placement of the brazing material Welding Fuse Copper Pipe End Cap so that it does not play a capillary role.
(3) The local gap of Copper Cap High Pressure OEM is too large.
6. The base metal is eroded,reasons as below:
(1) The brazing temperature of Copper Outer End Cap is too high and the holding time is too long.
(2) The effect between the base metal Copper Cap for BS(British Standard) Type Fuse and the solder is too severe.
(3) The amount of solder is too large.
Application of new energy vehicle fuse
EV electric vehicle fuse: The EV fuse with End Cap and Contact used in electric vehicles not only needs the fuse protection performance of DC high-voltage fuses in ordinary power distribution systems, but also needs to withstand the shock and vibration of road vehicles. A unique class of requirements for the Contact Knife Cap Fuse used.At present, the working voltage of passenger cars is generally above 370V, and that of buses is above 576V, which is much higher than the 12V/24V of traditional automotive electrical components. Such a high working platform voltage requires End Cap Terminal EV/HEV fuses to have both the high breaking capacity of low-voltage fuses and the high reliability of automotive fuses with Outer Cap Contact.In addition to the power battery main fuse, there are also automotive air conditioning systems, heating systems, and DC/DC systems (converting the power battery voltage to 14 V to provide the vehicle Low-voltage power supply, similar to generator) and other accessory high-voltage circuits, each circuit needs to be connected in series with a DC high-voltage Copper Cap Contact Fuse for circuit protection.
In the high-voltage distribution box of an electric vehicle, the output terminal is mainly connected to the auxiliary power supply system of the vehicle, and the inside of the distribution box generally includes an electric heating fan branch, an air-conditioning compressor branch, a DC/DC branch and a charger branch. These four branches, each branch needs to install line protection Knife Contact Fuse, the purpose is to cut off the power protection circuit in time when each load is short-circuited, and avoid vehicle fire. With the comprehensive advantages of small size, good shock resistance and low price, fuses have been widely recognized and used in large quantities, and have become the main components Fuse Terminal recognized at home and abroad as the short-circuit protection of electric vehicles.
For the Copper Contact Cap fuse standard system, it is mainly divided into IEC standard, UL standard and ISO standard. Among them, Chinese GB, German DIN and British BS basically adopt IEC standard. IEC standards mainly include IEC 60127, IEC 60269, etc. UL mainly includes UL248, etc. ISO mainly includes ISO 8820 series.
Contact Information:
Mr.Terry Young (Sales Manager&Technology Engineer)
Apollo Electronic Components (Xiamen) Co.,Ltd
Xiamen Apollo Stamping Welding Technology Co., Ltd
Add:225#,Jinshang Road,Huli District,Xiamen City,Fujian Province,China,361009
Tel&Fax: 0592-5765084, Mob/WhatsApp/WeChat: 0086-13859903038 ,QQ: 1260358661
Email: yfd@china-electronic-components.com
Web: www.china-electronic-components.com , www.stamping-welding.com
Since 1990,professional in Silver Contact Rivet&Core&Screw Terminal for Relay&Switch&Contactor&Breaker ect Riveting&Welding solutions !