Battery cell and preparation method thereof

Inactive Publication Date: 2021-01-26
JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of stacking stacked cells, the process is cumbersome, the production efficiency is low, and the phenomenon of misalignment is prone to occur.

Method used

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  • Battery cell and preparation method thereof
  • Battery cell and preparation method thereof
  • Battery cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] 1. The preparation method of the cell

[0028] refer to Figure 1~3 , the first aspect of the present invention provides a method for preparing an electric core, comprising the following steps:

[0029] 1) The continuous first pole piece and the second pole piece are respectively divided into a first pole piece monomer 2 and a second pole piece monomer 3, wherein the polarity of the first pole piece and the second pole piece are opposite;

[0030] 2) Unwind a layer of diaphragm 1, place several first pole piece monomers 2 on the diaphragm 1, and press it tightly;

[0031] 3) Place a layer of diaphragm 1 on the first pole piece monomer 2, and place several second pole piece monomers 3 on the diaphragm 1, and the second pole piece monomer 3 is set corresponding to the first pole piece monomer 1 , compact;

[0032] 4) Repeat steps 2) to 3) until the required thickness / number of layers of the cell is reached, and heat press to form several continuous cell units;

[0033...

Embodiment 1

[0046] A method for preparing an electric core, comprising the steps of:

[0047] 1) Cut a number of first tabs on the edge of the continuous first pole piece, cut out a number of second tabs on the edge of the continuous second pole piece, and cut the continuous first pole piece and the second pole piece respectively Form the first pole piece monomer 2 and the second pole piece monomer 3, so that each first pole piece monomer 2 is formed with a first tab, and each second pole piece monomer 3 is formed with a second pole an ear, wherein the polarity of the first pole piece and the second pole piece are opposite;

[0048] 2) Unwind a layer of diaphragm 1, place several first pole piece monomers 2 on the diaphragm 1, set the first lugs of the first pole piece monomer 2 toward the same end, and press them tightly;

[0049] 3) Place a layer of diaphragm 1 on the first pole piece monomer 2, and place several second pole piece monomers 3 on the diaphragm 1, and the second pole piec...

Embodiment 2

[0054] A method for preparing an electric core, comprising the steps of:

[0055] 1) Cut a number of first tabs on the edge of the continuous first pole piece, cut out a number of second tabs on the edge of the continuous second pole piece, and cut the continuous first pole piece and the second pole piece respectively Form the first pole piece monomer 2 and the second pole piece monomer 3, so that each first pole piece monomer 2 is formed with a first tab, and each second pole piece monomer 3 is formed with a second pole an ear, wherein the polarity of the first pole piece and the second pole piece are opposite;

[0056] 2) Unwind a layer of diaphragm 1, place several first pole piece monomers 2 on the diaphragm 1, set the first lugs of the first pole piece monomers 2 toward the same end, and press them tightly;

[0057] 3) Place another layer of diaphragm 1 on the first pole piece monomer 2, and place several second pole piece monomers 3 on the diaphragm 1, and the second po...

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Abstract

The invention belongs to the technical field of battery manufacturing, and particularly relates to a battery cell and a preparation method thereof. The preparation method comprises the steps: 1, cutting a first pole piece and a second pole piece which are continuous into a first pole piece single body and a second pole piece single body respectively, wherein the polarity of the first pole piece isopposite to that of the second pole piece; 2) unwinding a layer of diaphragm, placing a plurality of first pole piece monomers on the diaphragm, and pressing; 3) placing a layer of diaphragm on the first pole piece monomer, placing a plurality of second pole piece monomers on the diaphragm, and correspondingly arranging and pressing the second pole piece monomers and the first pole piece monomer;4) repeating the steps 2) to 3) until the thickness / layer number required by the battery cell is reached, and forming a plurality of continuous battery cell units through hot pressing; 5) cutting offthe diaphragm between two adjacent battery cell units to obtain a plurality of battery cells at the same time. Compared with the prior art, preparation of a plurality of battery cells can be completed at the same time, pole piece translocation can be avoided, and the production efficiency and the production quality are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of battery manufacturing, and in particular relates to a battery cell and a preparation method thereof. Background technique [0002] Lithium-ion batteries have the advantages of high voltage, high specific energy, many cycles, and long storage time. As a key component of electric vehicles, the performance of various electrochemical properties of lithium-ion batteries will directly become one of the main constraints affecting the widespread application of electric vehicles. As the core component of lithium-ion batteries, the production of batteries will directly affect the performance of lithium-ion batteries. [0003] In the prior art, there are wound electric cores and laminated electric cores. .Wound-type batteries are suitable for small-capacity batteries, and the winding process is not easy to control, and it is easy to deflect. Due to the common bonding method between the pole piece and the pole piec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0583H01M10/058H01M10/0525
CPCH01M10/0525H01M10/058H01M10/0583Y02E60/10Y02P70/50
Inventor 王雅楠
Owner JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
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