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Single battery, battery module and energy storage device

A single cell and shell technology, which is applied to small-sized cells/battery packs, battery pack components, secondary batteries, etc. Group convenient and fast, space-saving effects

Active Publication Date: 2020-06-12
HUBEI JINQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this encapsulation method is complex and inefficient

Method used

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  • Single battery, battery module and energy storage device
  • Single battery, battery module and energy storage device
  • Single battery, battery module and energy storage device

Examples

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Embodiment Construction

[0037] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a s...

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Abstract

The invention discloses a single battery, a battery module and an energy storage device, and relates to the field of batteries. The single battery comprises a shell, a battery cell and a sealing piece. The shell is of a structure with at least two open ends. The battery cell is arranged in the shell, a positive full tab and a negative full tab are respectively arranged at a first end and a secondend of the battery cell, which extend along the axis direction of the battery cell, and gaps are respectively punched at two symmetrical ends along the axis of the battery cell after the positive fulltab and the negative full tab are subjected to stitch welding so as to form a positive pole and a negative pole with set shapes. The sealing piece is inserted into the open end of the shell and is ininterference fit with the open end to block the open end, and a liquid injection hole is formed in the sealing piece, corresponds to the notch and is used for injecting electrolyte into the battery cell. The electrolyte of the single battery is injected through the liquid injection hole and then is uniformly immersed into the battery cell through the notch, so that the wettability of the electrolyte is better. The sealing piece is inserted into the opening end of the shell to achieve packaging of the shell, the structure is simple, and operation is easy.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a single battery, a battery module and an energy storage device. Background technique [0002] With the continuous development of science and technology, the application of lithium batteries is becoming more and more extensive. At present, the full-tab structure of lithium-ion batteries generally exists in soft packs and aluminum shell batteries. The extension part is stitched and welded as a whole. Affected by the welding pressure and welding area, the electrolyte cannot quickly enter the inside of the cell, and the battery’s standing time is prolonged, which seriously affects the performance of the battery. [0003] In the prior art, a notch is cut along the thickness direction on the extension of the positive and negative current collectors. The thickness of the notch is half of the thickness of the positive and negative current collectors. Electrolyte is injected into one s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M2/30H01M2/08H01M2/36H01M10/0525H01M50/186H01M50/258H01M50/531H01M50/543H01M50/627
CPCH01M10/0525H01M50/183H01M50/538H01M50/531H01M50/543H01M50/60Y02E60/10
Inventor 何巍李开波黄利明舒宽金刘金成袁中直
Owner HUBEI JINQUAN NEW MATERIALS CO LTD
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