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 bondin

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
Comparison scheme
Effect test

Example Embodiment

Specific Example 1

[0038] The first step, such as Figure 2A As shown, two pieces of nickel strips 21 and 22 with a thickness of 0.1mm are placed in a straight line in the mold. The size of the nickel strip is 2mm*10mm, and the two ends are separated by 1mm. Then the PET resin is injected by the injection molding machine to obtain the embedding belt at both ends. Box body 26 of a shaped 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 laser welded to the ends of the nickel strips 21 and 22.

[0040] The third step, such as Figure 2C As shown, the flux 24 that is a blend of rosin, stearic acid and diethylamine hydrochloride is heated and melted, and then dripped around the fusible alloy wire 23.

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

Example Embodiment

Specific Example 2

[0042] The first step, such as Figure 3A As shown, two nickel strips 31 and 32 with a thickness of 0.1mm are placed in a straight line in the mold. The size of the nickel strip is 2mm*10mm, and the two ends are separated by 1mm. Then the PET resin is injected by the injection molding machine to obtain the embedding belt at both ends. Box body 36 of a shaped 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 laser welded to the ends of the nickel strips 31 and 32.

[0044] The third step, such as Figure 3C As shown, a PET resin sheet with a thickness of 0.1 mm is taken and punched into a 5 mm×3 mm rectangular small sheet as the cover plate 35 with a punch, and an elliptical bulge is pressed in the middle part, and the height of the bulge is 0.3 mm. The flux 34, which is a blend of rosin, stearic acid and diethylamine hydrochloride, is heated and melted, and then is filled in...

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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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