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Temperature fuse and manufacturing method thereof

A technology of thermal fuse and manufacturing method, applied in fuse manufacturing, electrical components, electrical switches, etc., can solve the problems of flux leakage, many bonding interfaces, complex structure, etc., and achieve excellent sealing performance, simple manufacturing process, and simplified products. effect of structure

Active Publication Date: 2010-10-13
上海神沃电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex structure and many bonding interfaces, it is easy to have gaps in the bonding interface, causing internal flux leakage and affecting the safety performance of the product.

Method used

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  • Temperature fuse and manufacturing method thereof
  • Temperature fuse and manufacturing method thereof
  • Temperature fuse and manufacturing method thereof

Examples

Experimental program
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Effect test

specific Embodiment 1

[0038] first step, such as Figure 2A As shown, two nickel strips 21 and 22 with a thickness of 0.1mm are placed in a mold in a straight line, the size of the nickel strips is 2mm*10mm, and the distance between the two ends is 1mm, and then the PET resin is injected into the injection molding machine to obtain the embedded strips at both ends. The box body 26 of shape metal electrode;

[0039] The second step, such as Figure 2B As shown, a low temperature fusible alloy wire 23 with a length of 2.5 mm is welded to the ends of nickel strips 21 and 22 by laser.

[0040] The third step, such as Figure 2C As shown, the flux 24 prepared by blending rosin, stearic acid and diethylamine hydrochloride is added dropwise around the fusible alloy wire 23 after being heated and melted.

[0041] The fourth step is to take a PET resin sheet with a thickness of 0.1mm, punch it into a small rectangular piece of 5mm×3mm by a punching machine as the cover plate 25, and then use ultrasonic w...

specific Embodiment 2

[0042] first step, such as Figure 3A As shown, two nickel strips 31 and 32 with a thickness of 0.1mm are arranged in a straight line in the mold, the size of the nickel strips is 2mm*10mm, and the distance between the two ends is 1mm, and then the PET resin is injected into the injection molding machine to obtain the embedded strips at both ends. The box body 36 of shape metal electrode;

[0043] The second step, such as Figure 3B As shown, a low-temperature fusible alloy wire 33 with a length of 2.5 mm is welded to the ends of nickel strips 31 and 32 by laser.

[0044] The third step, such as Figure 3CAs shown, take a PET resin sheet with a thickness of 0.1mm, and use a punch to punch it into a small rectangular piece of 5mm×3mm as the cover plate 35, and press an elliptical bulge in its middle part, and the height of the bulge is 0.3mm. The flux 34 prepared by blending rosin, stearic acid and diethylamine hydrochloride is filled in the raised part of the cover plate 35...

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Abstract

The invention discloses a flat temperature fuse and a manufacturing method thereof. The temperature fuse comprises two ribbon-like metal electrodes and a closed cavity, wherein the two ribbon-like metal electrodes are linearly arranged, a space is arranged between the opposite ends of the two metal electrodes, and the space is provided with a fusible alloy wire; the fusible alloy wire connects the two ribbon-like metal electrodes; the joints of the fusible alloy wire and the two ribbon-like metal electrodes are packaged in the closed cavity; and the closed cavity comprises a box body and a cover plate. The temperature fuse has the advantages of simple structure, favorable tightness, simple manufacturing technique and high production efficiency.

Description

technical field [0001] The invention relates to an electronic component for overheating protection and a manufacturing method thereof, in particular to a flat temperature fuse and a manufacturing method thereof. Background technique [0002] With the continuous advancement of technology, portable electronic devices are increasingly popular, and mobile phones, MP3s, PDAs, notebook computers and digital cameras have become a part of people's daily life. Therefore, the safety of batteries, which are an important part of these portable electronic devices, has also been paid more and more attention. Lithium-ion rechargeable batteries have the advantages of large capacity and small size, and are currently the mainstream in the battery market. However, when the lithium-ion rechargeable battery is short-circuited, overcharged or the charging current is too large, it is easy to cause the battery to heat up violently, and then explosion and combustion accidents occur, endangering per...

Claims

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Application Information

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IPC IPC(8): H01H37/76H01H69/02H01H11/00
Inventor 宋华
Owner 上海神沃电子有限公司
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