Dongguan Chenglue Electronic co.,Ltd
Dongguan Chenglue Electronic co.,Ltd
Add to Cart
750V DC Over-Current Protection EV Battery Pack Fuse For Electric Vehicle
Features of car fuses
1. Vibration
The car will be subject to various vibrations when driving continuously on the expressway, when driving on roads with poor road conditions and stone roads, and when idling and parking. The fuse should be able to withstand the vibration of 44.1m/s2 for four-wheel vehicles, and 196m/s2 for two-wheel vehicles. If there is resonance for frequency changes, the function must be guaranteed.
2. Ambient temperature
The car needs to be able to drive in the scorching desert and in the severe cold without any problem. Also, fuses are provided in the compartment and engine room. Therefore, it must function reliably in a large ambient temperature range of -40 to 120°C.
3. Accuracy
The weight of the car has a great influence on the fuel consumption, so the wires also need to be lightweight and use thinner wires as much as possible. For this reason, the energizing current value of the wire is close to the allowable current value, and the fusing characteristics of the fuse must be managed within this narrow range.
4. Reliability
If the fuse is abnormal during driving, stop driving immediately, such as driving on expressways and roads, it may cause major accidents. In today's era when the average age of automobiles exceeds 10 years, fuses are required to have durability to maintain their functions against various environmental changes.
5. Dimensions and weight
Looking at automobiles from the viewpoint of CO₂ emission limits stipulated by international standards, it can be seen that the amount of CO₂ generated during driving is much larger than that generated when producing parts, materials, and vehicles, or when disposing of vehicles. Therefore, for the automotive industry, vehicle weight reduction is an important task, so the fuse is also required to be miniaturized and lightweight while ensuring performance.
Purpose and use
This series of fuses are suitable for lines with rated DC voltage below 1000V, rated current of 100A-200A and breaking capacity of 20kA. They are widely used in chargers. Comprehensive protection of charging pile, on-board battery, on-board circuit system and inverter. At the same time, it has the characteristics of strong current limiting capacity, large breaking capacity and fast short-circuit breaking speed. It can withstand temperature shock, mechanical vibration shock, current shock, chemical load, etc. This series of products conform to ISO 8820, JASO D622 and GB / T31465 standards.
Normal working conditions
Normal operating conditions of ambient air temperature: - 5 ℃ ~ 40 ℃; allowable operating conditions: - 40 ℃ ~ + 125 ℃;Relative humidity: 5% ~ 95%;Atmospheric pressure: 61.6 kPa ~ 106.2 kPa.
3. Use category
Full range fast fuse(gR)
Structural characteristics
The melting tube of the product is made of high-temperature resistant ceramic material, with high flame-retardant performance and strong hardness.
The melt is sealed in the melting tube with a variable cross-section melt made of 99.99% pure silver. The melting tube is filled with chemically treated high-purity quartz sand and specially treated chemical materials as arc extinguishing medium. The contact surface is silver plated to ensure reliable electrical performance, greatly reducing temperature rise and power consumption; Both ends of the melt are firmly connected with the contact by spot welding, which greatly enhances the safety and reliability of breaking short circuit fault current
Agreed current and agreed time
| Test current A | Fusing time s | |
| In:≥60A | ||
| min | max | |
| 1.1In | 14400 | - |
| 1.35In | 150 | 3600 |
| 1.5In | 20 | 1500 |
| 2In | 1 | 300 |
| 3In | 0.2 | 30 |
| 5In | 0.05 | 1 |