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Soft-package square battery electrode structure, battery, electronic equipment and preparation process of electrode structure

A prismatic battery and electrode structure technology, applied in non-aqueous electrolyte battery electrodes, secondary batteries, structural parts, etc., can solve the problems of high discharge platform, low production efficiency, poor battery consistency, etc., and achieve the effect of high power output performance

Pending Publication Date: 2021-08-13
惠州市竤泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of stacked lithium-ion batteries are good discharge rate, high power output, and high discharge platform; the disadvantages are low producti

Method used

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  • Soft-package square battery electrode structure, battery, electronic equipment and preparation process of electrode structure
  • Soft-package square battery electrode structure, battery, electronic equipment and preparation process of electrode structure
  • Soft-package square battery electrode structure, battery, electronic equipment and preparation process of electrode structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a soft-packed square battery electrode structure, including a positive electrode sheet, a negative electrode sheet, a positive electrode tab 210 and a negative electrode tab 220 . The positive electrode sheet is provided with a plurality of positive electrode empty foil regions 111 distributed at intervals along a long side, and the negative electrode sheet is provided with a plurality of negative electrode empty foil regions 112 distributed at intervals along a long side, such as image 3 as shown, image 3 It is shown that the pole piece 10 is provided with a plurality of pole piece empty foil areas 110 distributed at intervals along a long side, wherein the pole piece 10 includes a positive pole piece and a negative pole piece, and the corresponding pole piece empty foil zones 110 are positive pole empty foil zones 111 and The negative electrode empty foil area 112 is provided.

[0039] Furthermore, the positive electrode sheet, the separato...

Embodiment 2

[0050] This embodiment provides a preparation process for the electrode structure of the soft-packed prismatic battery, which is used for the description of the electrode structure of the soft-packed prismatic battery in Example 1.

[0051] Specifically, the preparation process of the soft-packed prismatic battery electrode structure of this embodiment is used to manufacture the above-mentioned soft-packed prismatic battery electrode structure, including:

[0052] Design positive and negative plates, specifically for manufacturing such as image 3 As shown in the pole sheet 10, the positive electrode sheet is provided with a plurality of positive electrode empty foil regions 111 distributed along a long side, and the negative electrode sheet is provided with a plurality of negative electrode empty foil regions 112 distributed along a long side for subsequent steps. use;

[0053] Such as Figure 4 , the positive electrode sheet, the separator and the negative electrode sheet ...

Embodiment 3

[0058] This embodiment provides a soft-packed prismatic lithium electronic battery, including an electrolyte, a packaging film, and the electrode structure of the soft-packed prismatic battery in Example 1, wherein the packaging film encapsulates the winding core 30 and contains the electrolyte so that the electrolyte can infiltrate the winding core 30 positive and negative plates. After adopting the soft-packed square battery electrode structure of Example 1, the soft-packed square lithium electronic battery also combines the advantages of winding and lamination, which not only has the high production efficiency and good product consistency of the wound battery, but also It can achieve the high power output performance of laminated battery.

[0059] Wherein, the electrolyte is composed of fluorine-containing lithium salt and an organic solvent.

[0060] Optionally, the packaging film is made of aluminum-plastic film, which has anti-destructive properties.

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Abstract

The invention discloses a soft-package square battery electrode structure, relates to the technical field of soft-package batteries, and solves the technical problems of defects of a winding type lithium ion battery electrode structure and defects of a laminated lithium ion battery electrode structure in related technologies. In the structure, a plurality of positive empty foil areas distributed at intervals are arranged on a positive plate along a long edge side, a plurality of negative empty foil areas distributed at intervals are arranged on a negative plate along a long edge side, the positive plate, a diaphragm and the negative plate are sequentially wound to form a roll core, and the positive empty foil areas and the negative empty foil areas are located on the same side of the roll core; and all the positive empty foil areas are stacked to form a positive empty foil fusion area, all the negative empty foil areas are stacked to form a negative empty foil fusion area, and the positive empty foil fusion area and the negative empty foil fusion area are staggered. According to the structure, the advantages of winding and lamination are integrated, tabs are discharged from the same end of a battery cell, the high production efficiency and good product consistency of a winding type battery are achieved, and the high-power output performance of a lamination type battery can also be achieved.

Description

technical field [0001] The invention relates to the technical field of soft pack batteries, in particular to an electrode structure of a soft pack square battery, a battery, electronic equipment and a preparation process. Background technique [0002] Soft-pack lithium-ion battery is a common type of lithium-ion battery in lithium-ion batteries. Soft-pack lithium-ion batteries are divided into square soft-pack lithium-ion batteries and cylindrical soft-pack lithium-ion batteries. Square soft-pack lithium-ion batteries are structurally divided into , and can be divided into winding structure and laminated structure. [0003] Such as figure 1 As shown, the electrode structure of the wound lithium-ion battery: one positive and one negative pole piece 10, generally rectangular, the positive and negative pole lugs 20 are respectively welded on an empty foil area reserved on the pole piece, the positive and negative poles The pole pieces 10 are separated by a diaphragm and wound...

Claims

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Application Information

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IPC IPC(8): H01M4/13H01M10/0587H01M10/0525H01M50/536H01M50/538
CPCH01M4/13H01M10/0525H01M10/0587Y02E60/10Y02P70/50
Inventor 张文桂钟千里蓝勇彪
Owner 惠州市竤泰科技有限公司