Preparation method of battery cell structure and battery cell structure

A cell, one-sided technology, applied in battery electrodes, structural parts, non-aqueous electrolyte batteries, etc., can solve problems such as reducing the utilization rate of battery internal space, restricting battery capacity and battery power, and being unable to participate in electrochemical reactions. Loss, cost reduction, and effect of increasing reaction area
CN112635845AActive Publication Date: 2021-04-09武汉昊诚锂电科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
武汉昊诚锂电科技股份有限公司
Publication Date
2021-04-09

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Abstract

The invention discloses a preparation method of a battery cell structure and the battery cell structure, and belongs to the technical field of batteries. The preparation method of the battery cell structure comprises the following steps of: S1, coating one surface of a collector plate with positive electrode slurry and drying to form a positive electrode plate; S2, wrapping the positive plate with a diaphragm; S3, cutting to obtain a negative electrode plate of which the width is the same as that of the positive electrode plate and the length is smaller than a preset positive electrode plate length value; S4, folding the positive electrode plate and the diaphragm in half, so that the length of the positive electrode plate is halved, the coating surface of the positive electrode plate is arranged inwards, and the coating surface is the surface, coated with the positive slurry, of the positive electrode plate; S5, inserting the negative electrode plate between the two layers of contacted diaphragms to enable the diaphragms to be arranged between the coating surfaces of the negative electrode plate and the positive electrode plate so as to obtain an assembly body; and S6, bending the assembly body to obtain the battery cell structure. According to the preparation method of the battery cell structure and the battery cell structure provided by the invention, the loss of active materials can be reduced, and the space utilization rate is relatively high.
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Description

technical field

[0001] The invention relates to the technical field of batteries, in particular to a method for preparing a cell structure and the cell structure. Background technique

[0002] Lithium-manganese flexible packaging batteries have the advantages of customization, portability and high energy density, and are widely used in the field of electronic equipment.

[0003] In the prior art, unlike lithium-ion batteries, lithium-manganese flexible packaging batteries use soft and easily deformable metal lithium as the negative electrode. Therefore, a wound-type battery manufacturing process is required, which greatly restricts battery capacity. And the power of the battery, and the battery core with the winding structure has the problem that the material in the outermost ring of the winding body cannot participate in the electrochemical reaction. This phenomenon will cause two adverse consequences, one is the loss of active materials; The utilization of the internal sp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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