A controllable fuse, fuse assembly and control method

Abstract

The invention relates to a controllable fuse and a fuse assembly. The controllable fuse includes a fuse metal body, a driving device, and an automatic end locking device; the assembly also includes a motion controller circuit, a micro controller circuit and a detection circuit. The cross-sectional area of ​​the fuse metal body gradually increases from one end of the fuse metal body along the extension direction of the fuse metal body; the end locking device contacts the fuse metal body at different positions, thereby adjusting the rated current value of the fuse. The detection circuit is set up to detect the temperature value and current value on the fuse metal body in real time, and also detect whether the fuse metal body is in an open circuit state; there is a basis to control the movement of the automatic locking device at the end and adjust the rated current value of the fuse accordingly. The protected electrical equipment provides more precise overcurrent protection. The invention also provides a control method of the fuse assembly.

Description

technical field [0001] The invention belongs to the technical field of electronic devices, and specifically relates to a fuse and an assembly including 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 is heated by the fuse current to quickly fuse the fuse, thereby disconnecting the circuit to achieve circuit protection. Typically, a fuse has its own unique current rating, 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, the main circuit that provides power for smart devices, and also facilitates the use of smart devices. In the main circuit of intelligent equipment, the existing fuses that fuse the fuse by heating are used. Sometimes, in order to better protect the circuit, it is necessary to add two or more fuses in parallel. At the...

AI Technical Summary

Problems solved by technology

As a result, smart devices cause unnecessary damage, prolong the time of research and development, and increase 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 an overcurrent occurs in the battery system of the smart device and the fuse blows, the smart device will be in a stagnant state, wasting resources

Images