Electric storage device
A technology for electrical storage and current collectors, applied in circuits, capacitors, electrical components, etc., to solve problems such as the impossibility of ensuring enclosure sealing
Active Publication Date: 2012-07-18
GS YUASA INT LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0010] Therefore, even with a rivet with a hollow shank-shaped insertion portion, it is sometimes impossible to ensure the same sealing to the housing as with a rivet with a solid shank-shaped insertion portion
Method used
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Embodiment Construction
[0067] A battery as an embodiment of the electricity storage device according to the present invention will be described below with reference to the drawings. The battery according to the present embodiment is a nonaqueous electrolyte secondary battery, more specifically, a lithium ion secondary battery. exist Figures 1 to 4 As shown, the battery according to this embodiment includes a casing 1 , which is composed of a casing body 2 and a cover plate 3 , and the cover plate 3 covers the opening of the casing body 2 to seal the casing 1 . The cap plate 3 includes a terminal structure 9 electrically connected to the electrode assembly 4 accommodated in the case 1 .
[0068] The case main body 2 and the cover plate 3 include metal such as aluminum alloy, stainless steel alloy, or the like. In this embodiment, the case body 2 and the cover plate 3 comprise aluminum alloy. The aluminum alloys used include untreated aluminum alloys (F-temper materials), annealed aluminum alloys ...
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Provided is an electric storage device that can ensure sealing of a case that houses an electrode assembly. An electric storage device according to the present invention includes: an electrode assembly; a case that houses the electrode assembly, the case including a defining wall; a rivet that passes through the defining wall, the rivet having a body and an insertion part formed continuously with the body; a conductive member that is electrically connected to the rivet; and a sealing member arranged at least one of between the defining wall and the conductive member and between the defining wall and the body, wherein the insertion part has a portion that is inserted through the defining wall, the sealing member and the conductive member; the insertion part has a diameter smaller than that of the body at least in the portion inserted through the defining wall, the sealing member and the conductive member; the insertion part has a hollow shaft-shaped end with a non-through hole extending in an axial direction of the insertion part, the end being crimped in a state where the insertion part has been inserted through the defining wall, the sealing member and the conductive member; and a bottom of the non-through hole is located between the defining wall and the conductive member.
Description
technical field [0001] The present invention relates to an electrical storage device comprising an electrode assembly, a case accommodating the electrode assembly, and a rivet passing through a defining wall of the case. Background technique [0002] In recent years, rechargeable and dischargeable electric storage devices such as secondary batteries (for example, lithium-ion batteries and nickel-metal hydride batteries) and capacitors (for example, double-layer capacitors) have been adopted as vehicles (for example, automobiles and motorcycles) and various A power source for a variety of devices such as portable terminals and laptop computers. For example, various types of batteries have been provided. One of them is a storage battery, which includes: an electrode assembly; a current collector electrically connected to the electrode assembly; a case for accommodating the electrode assembly and the current collector; external terminals arranged outside the case; a sealing m...
Claims
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IPC IPC(8): H01M2/30H01M2/08H01M2/06H01G11/00H01G11/74H01G11/78H01M50/159H01M50/176H01M50/186H01M50/531H01M50/55H01M50/553
CPCH01M2/305Y02E60/12H01M2/0473H01M10/0413H01M2/0217H01M2/26H01M2/08H01M2/06Y02E60/10H01M50/103H01M50/15H01M50/531Y02P70/50H01M50/186H01M50/55H01M50/553H01M50/159H01M50/176H01M50/147
Inventor 河本元堤雅和中村纯
Owner GS YUASA INT LTD