Adjustable fuse, fuse assembly and control method

Abstract

The invention relates to an adjustable fuse and a fuse assembly. The adjustable fuse comprises an insulating carrier, a fuse wire fixed on the insulating carrier, and a sliding contactor. The slidingcontactor is provided with a joint contacted with the fuse wire, and the joint moves back and forth along the length direction of the insulating carrier; therefore, the length of the fuse wire actually used in the fuse is changed, and the rated current value of the fuse is adjusted. A current Hall sensor is arranged, so that the current value on the fuse wire can be detected in real time, the rated current value of the fuse is correspondingly adjusted by controlling the joint of the sliding contactor to move according to the current value, and a more accurate overcurrent protection effect is provided for protected electrical equipment. The invention further provides a control method of the fuse assembly.

Description

technical field [0001] The invention belongs to the technical field of electronic devices, in particular to a fuse and a component containing the fuse. Background technique [0002] Fuses are commonly used electrical components that play a protective role in circuits. Generally, when the fuse circuit is overloaded, the fuse will be heated by the fusing current to quickly fuse the fuse to disconnect the circuit to realize circuit protection. Generally, a fuse has its own rated current capacity, which is determined by the metal parts that make up the fuse. With the development and popularization of smart devices, smart devices use a lot of batteries to facilitate the use of smart devices. In the main circuit of smart devices, the existing fuses that fuse the fuse by heating are used. Sometimes in order to better protect the circuit, two or more fuses need to be used in parallel. At the same time, the fixity of the fusing current determines the The protection of equipment is...

AI Technical Summary

Problems solved by technology

In the main circuit of smart devices, the existing fuses that fuse the fuse by heating are used. Sometimes in order to better protect the circuit, two or more fuses need to be used in parallel. At the same time, the fixity of the fusing current determines the The protection of equipment is not accurate, which causes unnecessary damage to smart equipment, prolongs the time of research and development, and increases the cost of research and development

However, the fuses in the prior art are all fixed fusing current devices, and at the same time need to manually adjust the current, and once destroyed, they cannot continue to be used, and when multiple fuses are required in the same circuit, each individual fuse needs to be broken. It is very inconvenient to use it in parallel. For example, if the battery system of the smart device has an overcurrent and the fuse blows, the smart device will stagnate and waste resources.

In addition, since a rated current capacity is determined for each fuse, if the rated current required by the smart device to be protected cannot be determined, in order to avoid the circuit from being easily disconnected, a fuse with a larger rated current can only be added mechanically device

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