An adjustable fuse, fuse assembly and control method

A control method and fuse technology, applied in electrical components, emergency protection devices, circuits, etc., can solve problems such as damage to intelligent equipment, unusable use, stagnation of intelligent equipment, etc., and achieve the effect of improving selectivity and flexible selection.

Active Publication Date: 2022-07-22
NANJING SART SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • An adjustable fuse, fuse assembly and control method
  • An adjustable fuse, fuse assembly and control method

Examples

Experimental program
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Embodiment 1

[0020] please combine figure 1 As shown, this embodiment discloses a fuse assembly, including an adjustable fuse 100, a control system 200, a current Hall sensor 300, and a holder 400 made of insulating material. The adjustable fuse 100 includes an insulating carrier 1 , a fuse wire 2 fixed on the insulating carrier 1 , and a sliding contactor; the fuse wire 2 extends along the length direction of the insulating carrier 1 . Both ends of the insulating carrier 1 are fixed on both ends A and B of the holder. And in this embodiment, the fuse wire 2 is spirally wound on the insulating carrier 1 . The sliding contactor has contacts in contact with the fuse 2 , which are moved back and forth along the length of the insulating carrier 1 to make contact with different positions of the fuse 2 . The fuse wire 2 is a bare fuse body with no insulating layer on the outer surface. When the fuse wire 2 is wound on the insulating carrier 1, the spacing of the fuse wire 2 needs to be matched...

Embodiment 2

[0025] This embodiment is the control method of the fuse assembly in the above-mentioned first embodiment. In the control method: the current value signal detected by the current Hall sensor 300 is transmitted to the control system; When the current value signal does not meet the fusing requirements, the joints 5 and 6 of the sliding contactor are controlled to slide so that the fusing current reaches the preset fusing requirements.

[0026] However, as in the first embodiment, when the fuse assembly includes at least two adjustable fuses 100, the two adjustable fuses are set to different fusing currents. When one adjustable fuse is blown, the other adjustable fuse is blown. The fuse is still connected, so that the overall circuit connection is not interrupted.

[0027] When an adjustable fuse is blown, the joints 5 and 6 of the sliding contactor are controlled to move to both ends of the unblown fuse 2, that is, the fused part between the joints 5 and 6 is avoided and the unf...

Embodiment 3

[0029] The third embodiment provides an adjustable fuse, which is an independent adjustable fuse in the first embodiment. The independent adjustable fuse can be manufactured and used as a product alone, and can be adjusted manually or automatically. The position where the joint of the sliding contactor is in contact with the fuse wire enables the selection of different rated fuse currents. Since the adjustable fuse in this embodiment is exactly the same as the adjustable fuse in the first embodiment, it will not be repeated here.

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PUM

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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 length direction of the insulating carrier moves back and forth; thereby changing the length of the fuse actually used in the fuse, thereby adjusting the rated current value of the fuse. The current Hall sensor is set to detect the current value on the fuse wire in real time, and based on the current value, the joint of the sliding contactor is controlled to move and the rated current value of the fuse is adjusted accordingly. Provide more accurate overcurrent protection effect. The present 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 gradual popularization of smart devices, smart devices use a lot of batteries, which is convenient for 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 same time, the fixedness of the fuse current...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H85/04
CPCH01H85/04
Inventor 杨漫雪黄云周家兴
Owner NANJING SART SCI & TECH DEV
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