Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Low-melting point alloy wire and temperature fuse adopting the same

A thermal fuse and alloy wire technology, applied in emergency protection devices, electrical components, circuits, etc., can solve the problem of high resistivity of alloy wire, achieve the effect of improving the accuracy of fusing temperature and eliminating the uncertainty of fusing temperature

Active Publication Date: 2008-06-11
BYD CO LTD
View PDF2 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While satisfying ΔT as small as possible and avoiding the phase change of the alloy, the resistivity of the existing alloy wire is often high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-melting point alloy wire and temperature fuse adopting the same
  • Low-melting point alloy wire and temperature fuse adopting the same
  • Low-melting point alloy wire and temperature fuse adopting the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The cross-sectional area of ​​the molded low melting alloy wire (4) of the present invention is 1.13mm 2 , The diameter of the raw material is 1.2mm, and the main components are In52%, Sn31%, Bi13%, Ag1%, Cu1%, and Zn2%.

[0035] The flux of the present invention is prepared according to the following process: Weigh 6g stearic acid and add it to 10g n-butanol, put it in a thermostat at 120°C until it dissolves, then add 20g hydrogenated rosin and 10g disproportionated rosin, stir and mix evenly , Put it in a heating furnace and heat it until it boils, take it out and add 1 g of glacial acetic acid until it cools to room temperature, spot the above flux on the cover film with a dispenser, and ultrasonically weld it to form.

Embodiment 2

[0037] The cross-sectional area of ​​the low melting point alloy wire (4) after molding of the present invention is 1.33mm 2 , The diameter of the raw material is 1.3mm, and the main components are In54%, Sn35%, Bi8%, Ag1%, Cu2%. The test method is the same as in Example 1.

[0038] Weigh 6.5g stearic acid into 10g n-butanol, put it in a thermostat at 120°C until it dissolves, then add 15g disproportionated rosin and 15g polymerized rosin, stir and mix evenly, put it in a heating furnace and heat until boiling. After taking it out, add 1 g of glacial acetic acid until it is cooled to room temperature. The other preparation processes are the same as in Example 1.

Embodiment 3

[0040] The cross-sectional area of ​​the invented low melting point alloy wire (4) after molding is 1.33mm 2 , The diameter of the raw material is 1.3mm, and the main components are In50%, Sn33%, Bi15%, Cu1%, Zn1%. The test method is the same as in Example 1.

[0041] Weigh 6g of stearic acid and add it to 10g of positive alcohol, put it in a thermostat at 120°C until it dissolves, then add 25g of ordinary rosin, stir and mix evenly, put it in a heating furnace and heat until it boils, take it out and add 1g of hydrochloric acid Until it is cooled to room temperature, other preparation processes are the same as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Cross-sectional areaaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a low molten point alloy wire and a temperature fuse using the alloy wire, wherein the temperature fuse comprises two electrode sheets (1), an insulation bottom film (21) and an insulation upper film (22), a flux (3) and a low motel point allow wire (4). Two electrode sheets (1) are positioned on the insulation bottom film (21). Two ends of the low motel point alloy wire (4) are respectively connected with two electrode sheets (1). The molten flux (3) is coated on the low motel point alloy wire (4) and is coated with the insulation upper film (22). The mass percentages of the low motel point alloy wire (4) include: 50 percent to 56 percent In, 30 percent to 38 percent Sn, 6 percent to 15 percent Bi and a small quantity of Ag, Cu, and Zn. The flux (3) is constituted by rosin, stearine acid, liquid alcohol and small molecule acid. The temperature fuse of the invention can work for longer time on 8A current, thereby improving the blow-out temperature accuracy of the temperature fuse at the same time.

Description

Technical field [0001] The invention belongs to the technical field of circuit protection, in particular to an alloy sheet-shaped thermal fuse used in a notebook computer battery. technical background [0002] Various electronic and electrical products often cause circuit damage due to overcurrent, overheating, etc. during use, thereby affecting the normal use of the product. Existing electronic products such as mobile phones and digital cameras mostly use lithium-ion batteries. In order to ensure the safety of lithium batteries, most lithium batteries are equipped with thermal fuses. When the above situation occurs, the thermal fuse is blown to protect the circuit and the product. Generally, the fuse is a low melting point alloy wire wrapped with a flux. [0003] If the electrical device equipped with the fuse generates heat abnormally, the heat released will melt the low melting point alloy wire. When a certain amount of alloy wire transforms into the liquid phase, the liquid m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01H85/055H01H85/06C22C28/00
Inventor 乐海霞刘子岳徐恺
Owner BYD CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com