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Method for mfg. alloy type temp fuse

A technology for thermal fuses and manufacturing methods, applied in emergency protection devices, electrical components, circuits, etc., can solve problems such as uneven distribution of product resistance, adhesion of low-melting point alloys and welding heads, and difficulty in accurately controlling the melting part, etc., to achieve continuous operation Good performance and stability, reduced complexity, uniform distribution of product resistance

Inactive Publication Date: 2005-03-09
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, due to the heating and melting of the low-melting point alloy wire, it is difficult to accurately control the size of the molten part, and it is easy to cause uneven distribution of product resistance; and because the metal welding head must be used, it is easy to cause the low-melting point alloy to stick to the welding head, affecting Continuity and stability of operation

Method used

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  • Method for mfg. alloy type temp fuse
  • Method for mfg. alloy type temp fuse
  • Method for mfg. alloy type temp fuse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] When connecting the low-melting-point alloy wire and the electrode connection sheet, a metal welding head coated with a polytetrafluoroethylene layer is used for cold-press welding. The part where one end of the electrode connection sheet is connected with the low melting point alloy wire is plated with a metal copper layer.

Embodiment 2

[0048] When connecting the low-melting-point alloy wire and the electrode connecting sheet, a non-metallic material bakelite welding head is used for cold-press welding. The part where one end of the electrode connection sheet is connected with the low melting point alloy wire is plated with a metal copper layer.

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Abstract

The persent invention relates to an alloy type temperature fuse and its production method. Said temperature fuse consists of plastic lower film, electrode connecting sheet, fusible alloy wire and plastic upper film. Its production method includes the following steps: hot-pressing the electrode connecting sheet on the plastic lower film, spot-welding low fusion point alloy wire on opposite two ends of two electrode connecting sheets and adding flux, finally covering it and hot-pressing plastic upper film. It is characterized by that when the low fusion point alloy wire is welded on opposite two end points of two electrode connecting sheets, said invention adopts cold-pressure welding method, i.e. does not heat low fusion alloy wire and does not adopt fusion welding mode, the low fusion alloy wire can be directly pressed on the surface of end portion of electrode connecting sheet under the room temperature or temperature below alloy fusion point.

Description

【Technical field】 [0001] The invention relates to a fuse and a manufacturing method, in particular to a manufacturing method of an alloy type thermal fuse used in a lithium-ion mobile phone battery. 【Background technique】 [0002] In recent years, with the development of communication technology, small portable electronic devices such as mobile phones, laptop computers, PDAs, etc. are increasingly popular. Lithium-ion batteries have gradually become the power supply for the above small devices due to their series of advantages. However, if the lithium-ion battery is used improperly, such as when it is overcharged or the charging current is too large, the temperature of the battery will rise sharply, which may cause dangers such as explosion and fire. For this reason, various temperature insurance devices are generally used in the battery block to control the temperature, such as PTC thermistors and low melting point alloy fuses. [0003] PTC thermistor has an important app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H37/76H01H85/05H01H85/08H01H85/143
Inventor 张建业程觉利王传福
Owner BYD CO LTD
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