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Protective element and battery pack

A technology for protecting components and battery cells, applied to battery pack components, batteries, safety/protection circuits, etc., can solve problems such as output voltage reduction, and achieve the effect of preventing damage, preventing contamination and accidental short circuit risks

Pending Publication Date: 2022-04-01
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the FET switch is short-circuited and destroyed for some reason, when a surge or the like is applied and a momentary large current flows, or due to the life of the battery cell, the output voltage drops abnormally, or the output voltage is reversed. In the case of excessive abnormal voltage, it is necessary to protect the battery pack and electronic equipment from accidents such as fire

Method used

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  • Protective element and battery pack
  • Protective element and battery pack
  • Protective element and battery pack

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0050] figure 1 , figure 2 , image 3 A protection element 1 to which this technology is applied is shown. The protective element 1 includes: an insulating substrate 2; a soluble conductor 3 mounted on the surface of the insulating substrate 2; The upper case 5 and the insulating substrate 2 are accommodated by joining the lower case 4 and the upper case 5 . In addition, the protection element 1 has first and second external connection terminals 7 and 8 . The first and second external connection terminals 7 and 8 are provided throughout the inside and outside of the case 6, and are connected to connection electrodes of an external circuit provided in the mounting protection element 1 by screwing or the like. The first and second external connection terminals 7 and 8 are supported by the lower case 4 , and each end is connected by a fusible conductor 3 . Furthermore, the protective element 1 is incorporated into an external circuit through the first and second external c...

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PUM

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Abstract

The invention provides a protective element which can prevent damage of the element and ensure proper insulation property by discharging pressure in a box body through an opening part arranged in the box body. This protection element is provided with: a fusible conductor (3); first and second external connection terminals (7, 8) connected to both ends of the fusible conductor (3); and a housing (6) having a lower housing (4) and an upper housing (5), one end of each of the first external connection terminal (7) and the second external connection terminal (8) being led out from the housing (6), a first opening (24) being formed in a surface of the housing (6) facing the first external connection terminal (7), and a second opening (25) being formed in a surface of the housing (6) facing the second external connection terminal (8).

Description

technical field [0001] The present technology relates to a protection element that cuts off a current path, and a battery pack using the protection element. This application claims priority based on Japanese Patent Application No. Japanese Application No. 2019-157432 filed in Japan on August 29, 2019, and this application is hereby incorporated by reference. Background technique [0002] Most secondary batteries that can be charged and reused are processed into battery packs and provided to users. Especially in lithium-ion secondary batteries with high weight and energy density, in order to ensure the safety of users and electronic equipment, some protection circuits such as overcharge protection and overdischarge protection are usually built into the battery pack, and the battery pack can be cut off under predetermined conditions. function of the output. [0003] In many electronic devices using lithium-ion secondary batteries, the FET switch built into the battery pack i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H37/76H01H85/143H01H85/175H01M50/583H02H7/18H02J7/00
CPCH02H7/18Y02E60/10H01M50/204H01M50/583H01M50/581H01M50/574H01M2200/103H01M2200/00H01M2010/4271H01M10/482H01H37/761H01H85/46H01H61/02H01H2085/466H01H85/0082H01H85/43H01H85/0039H01H85/08H01H85/11H01H85/06H01H85/175H02J7/00309H02J7/0042H01H37/76H01H85/165H01M10/44H01M10/48H02J7/00H01M50/20H01M50/572H01M50/296H01M50/548
Inventor 木村裕二小森千智
Owner DEXERIALS CORP