The function of electric vehicle fuses and new energy EV fuses

1、 Fuse position

Inside the battery box: Most electric vehicle fuses are installed inside the battery box to protect the

battery pack and connected circuits from damage caused by overcurrent.

External Battery Box: Some electric vehicles are designed with the fuse holder located outside the battery

box for easy inspection and replacement. These fuse holders are usually labeled with the word “FUSE” and

can be rotated counterclockwise to check if the fuse is blown.

2、 The function of fuses

Overload protection: The main function of a fuse is to melt itself to cut off the current when the current in

the circuit abnormally rises to a certain height and heat, thereby protecting the circuit and its connected

equipment from damage.

Circuit safety: In electric vehicles, the presence of fuses effectively prevents overcurrent caused by battery

pack short circuits, motor failures, and other reasons, protecting the safe operation of the entire vehicle

circuit.
Historical development: The concept of fuses was first proposed by Edison to protect expensive

incandescent lamps at that time. With the development of technology, fuses have become an

indispensable protective component in various power equipment.

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