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Button cell

A button-type battery and cell technology, applied in battery pack components, circuits, electrical components, etc., can solve the problems that the battery cannot make full use of the internal space of the battery shell, the thickness of the top cover structure is large, and the energy density of the battery is low. Small space, large interior space, small footprint effect

Pending Publication Date: 2021-01-29
JIANGMEN YUANXI TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] The battery shell of the button battery adopts a cylindrical structure. At present, the battery shell is generally divided into two structures. One structure is composed of an inner shell, an outer shell and a sealing ring. The outer shell is buckled on the outside of the inner shell, and the outer shell The sealing ring is connected with the inner casing, this structure occupies more space in the radial direction, resulting in the battery not being able to make full use of the internal space of the battery casing, and there is a problem of low energy density of the battery; another structure is It is composed of a shell and a top cover, and the top cover is connected with the shell. The existing top cover is generally connected with poles by riveting, and the structure is complex, and the structure thickness of this top cover is relatively large, resulting in more space in the axial direction. There is also the problem of low battery energy density

Method used

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Embodiment Construction

[0028] This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0030] I...

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Abstract

The invention discloses a button cell, which comprises a shell body, a pole, a sealing piece and a battery cell, wherein a through hole is formed in the shell body; the pole is arranged in the throughhole in a penetrating manner, the pole and the shell body are in sealed connection through an insulating piece, a liquid injection hole is formed in the shell body or the pole, and the liquid injection hole is communicated with the interior of the shell body; the sealing piece is used for sealing the liquid injection hole; and the battery cell is arranged in the shell body, a first tab and a second tab with opposite polarities are respectively arranged at two ends of the battery cell, the first tab is electrically connected with the shell body, and the second tab is electrically connected with the pole. The button cell is simple in structure, the shell body is small in occupied space and large in internal space, the energy density of a battery is effectively improved, and the production requirement is met.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a button battery. Background technique [0002] The battery shell of the button battery adopts a cylindrical structure. At present, the battery shell is generally divided into two structures. One structure is composed of an inner shell, an outer shell and a sealing ring. The outer shell is buckled on the outside of the inner shell, and the outer shell The sealing ring is connected with the inner casing, this structure occupies more space in the radial direction, resulting in the battery not being able to make full use of the internal space of the battery casing, and there is a problem of low energy density of the battery; another structure is It is composed of a shell and a top cover, and the top cover is connected with the shell. The existing top cover is generally connected with poles by riveting, and the structure is complex, and the structure thickness of this top c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/109H01M50/153H01M50/181H01M50/186H01M50/531
CPCY02E60/10H01M50/153H01M50/181H01M50/559H01M50/645H01M50/627H01M50/545H01M50/56H01M50/188H01M50/1243H01M50/119
Inventor 凌万秾
Owner JIANGMEN YUANXI TECH CO LTD
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