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Storage element

A technology of electric storage components and components, applied in the direction of electrical components, battery pack parts, capacitor parts, etc., can solve problems such as inability to discharge, and achieve the effect of preventing rupture

Active Publication Date: 2019-08-02
GS YUASA INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the power storage element 100 disconnects the conduction path when abnormal, so that the electric power stored in the electrode body 101 cannot be discharged to the outside.

Method used

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Embodiment Construction

[0090] Below, refer to Figure 1 to Figure 5 , an embodiment of the present invention will be described. The power storage element of the present embodiment is a non-electrolyte rechargeable battery (hereinafter simply referred to as "battery") such as a lithium ion rechargeable battery.

[0091] Such as figure 1 as well as figure 2 As shown, the battery 10 includes a case 20 , an electrode body 12 , a pair of terminal portions 30A and 30B, and a pair of current collectors 14 and 14 .

[0092] The casing 20 has a casing body 22 and a cover 24 . The case 20 accommodates the electrode body 12 , the pair of current collectors 14 and 14 , an electrolytic solution, and the like in an internal space S surrounded by the case main body 22 and the lid body 24 . The case main body 22 and the cover body 24 are formed of aluminum-based metal materials such as aluminum or aluminum alloy, for example. The case 20 is formed by welding the ends of the case body 22 and the cover 24 to e...

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Abstract

The object of the present invention is to provide an electric storage element that can be turned on even if the conduction member that conducts the external terminal and the electrode body is disconnected or the conduction state is reduced during overcharge or overvoltage. Discharge is discharged from the electrode body to the outside after the disconnection of the member or the reduction of the conduction state. The present invention is characterized in that it includes an electrode body, a case, a terminal portion, and a current collector, the terminal portion has an external terminal at least partially exposed to the outside of the case, and a conduction member that connects the external terminal and the current collector so as to be conductive. , an opening mechanism that disconnects the conduction member or hinders the conduction state of the conduction member, and an auxiliary terminal that is spaced from the external terminal and exposes at least a part to the outside of the housing, and the auxiliary terminal is electrically connected to the current collector .

Description

technical field [0001] The present invention relates to an electric storage element capable of charging and discharging. Background technique [0002] Conventionally, a chargeable and dischargeable power storage element such as a rechargeable battery is known. This energy storage device includes an electrode body, a case that accommodates both an electrolytic solution and the electrode body, an external terminal attached to the case, and a current collector 104 that is arranged in the case and connected to the electrode body. In addition, in such power storage elements, such as Figure 6 As shown, in addition to the electrode body 101, the case 102, and the current collector 104, a conduction member 105 and a conduction member cutting mechanism 106 for conducting the external terminal 103 and the current collector 104 are sometimes provided (Patent Document 1 ). In the electric storage element, the conduction member cutting mechanism 106 has a cutting portion 107, and when...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/12H01M2/34H01M50/103
CPCH01G9/10H01G9/15H01M50/103H01G11/20H01G11/74H01G11/78H01M2200/20Y02E60/10H01M50/578Y02E60/13
Inventor 奥野泰德
Owner GS YUASA INT LTD
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