Special requirements for automotive fuses?

The importance and main requirements of car fuses in automobiles, electric vehicles, and controllers Determine the safety performance of the fuse The following items are crucial

① Vibration
When driving continuously on highways, on roads with poor road conditions and cobblestone roads, and when idling, cars are subject to various vibrations. The fuse should be able to withstand a vibration of 44.1m/s2 for a four wheeled vehicle and 196m/s2 for a two wheeled vehicle. If it resonates with frequency changes, its function must be ensured.

② Environmental temperature
Cars need to be able to travel smoothly in hot deserts and cold regions without any problems. Moreover, fuses are installed in the cabin and engine compartment, so they must function effectively in a large ambient temperature range of -40 to 120 ℃.

③ Accuracy
The weight of a car has a significant impact on fuel consumption, so wires also need to be lightweight and thin wires should be used as much as possible. Therefore, the current value of the wire is close to the allowable current value, and the melting characteristics of the fuse must be managed within this narrow range.

④ Reliability
If the fuse malfunctions during driving, it will immediately stop driving. If driving on the highway, it may cause a major accident. In today’s era where the average lifespan of automobiles exceeds 10 years, fuses are required to have durability in maintaining their function against various environmental changes.

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