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Protection Devices and Fuse Devices

A technology for protection devices and fuses, which is applied in emergency protection devices, electrical components, circuits, etc., and can solve problems such as abnormal drop in output voltage

Active Publication Date: 2019-11-26
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 for some reason, when a large instantaneous current flows due to a lightning surge, or when the output voltage drops abnormally due to the life of the battery cell, or when an abnormally large voltage is output conversely, the Need to protect battery packs, electronic equipment from accidents such as fire

Method used

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  • Protection Devices and Fuse Devices
  • Protection Devices and Fuse Devices
  • Protection Devices and Fuse Devices

Examples

Experimental program
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Effect test

Deformed example 1

[0081] It should be noted that, figure 1 In the protection device 10 shown in , only the elastic member 20 is provided on the lead-out electrode 16 of the heating element to support the fuse element 17, but it can also be as Figure 4 As shown, the elastic member 20 is provided on the first electrode 12 and the second electrode 13 , and the connecting solder 21 is provided on the heating element lead-out electrode 16 . Figure 4 The protection device 30 shown can absorb and relax the stress between the first electrode 12 and the heating element lead-out electrode 16 through the elastic member 20 provided on the first electrode 12, and the elastic member provided on the second electrode 13 20, the stress between the second electrode 13 and the heating element lead-out electrode 16 can be absorbed and relaxed.

[0082] It should be noted that the protective device 30 may also be formed on the back surface 11 b of the insulating substrate 11 by the heating element 14 as describ...

Deformed example 2

[0084] In addition, if Figure 6 As shown, in the protection device, the elastic member 20 having the conductive layer 20b formed of a bonding material such as solder may be provided on the first electrode 12, the second electrode 13, and the heating element lead-out electrode 16. Figure 6 In the protection device 40 shown, the fuse element 17 is bonded to the first electrode 12, the second electrode 13, and the heating element lead-out electrode 16 through the conductive layer 20b of the elastic member 20, thereby achieving electrical conduction. also, Figure 6 The protective device 40 shown absorbs and relaxes the stress between the fuse element 17 and the device frame through the elastic members 20 provided on the first electrode 12 , the second electrode 13 and the heating element lead-out electrode 16 .

Deformed example 3

[0086] In addition, if Figure 7 As shown, the protective device can also be provided with an elastic member 20 on the insulating layer 15 . Figure 7 In the shown protection device 50 , the fuse element 17 is bonded to the first electrode 12 , the second electrode 13 , and the heating element lead-out electrode 16 via the solder 21 for connection, and electrical conduction is achieved. Furthermore, in the protection device 50 , the elastic member 20 provided on the insulating layer 15 is connected to the fuse portion 17 a between the first electrode 12 and the heating element extraction electrode 16 and between the second electrode 13 and the heating element extraction electrode 16 . The fusing part 17a of the fuse element 17 refers to the fusing part in the fuse element 17 connected between the heating element lead-out electrode 16 and the first electrode 12 and the second electrode 13, specifically, refers to the heating element lead-out electrode. 16 and the first electro...

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Abstract

The present invention provides a protection device capable of alleviating the increased stress accompanying the increase in size of a fuse element and maintaining stable fusing characteristics even with changes in ambient temperature. It has a first electrode 12 and a second electrode 13, a fuse element 17 connected between the first electrode 12 and the second electrode 13, and a frame supporting the fuse element 17, and the fuse element 17 is connected to the frame The side constituent members are fixed via elastic members 20 .

Description

technical field [0001] The present invention relates to a protection device and a fuse device that use a device installed in a current path that blocks the current path due to self-heating when a current exceeding the rated current flows or fuses due to heat generation of a heating element. fuse element. [0002] This application claims priority based on Japanese Patent Application No. Japanese Patent Application No. 2015-109098 for which it applied in Japan on May 28, 2015, and this application is incorporated in this application by reference. Background technique [0003] Most secondary batteries that can be used by repeated charging are processed into battery packs and provided to users. In particular, for lithium-ion secondary batteries with high weight and energy density, in order to ensure the safety of users and electronic equipment, several protection circuits, such as overcharge protection and overdischarge protection, are generally built in the battery pack. A fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H37/76H01H85/05
CPCH01H37/76H01H85/05
Inventor 小森千智佐藤浩二
Owner DEXERIALS CORP
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