Method for manufacturing super-thick high-energy-density polymer lithium ion battery cell

A technology with high energy density and manufacturing methods, applied in the direction of final product manufacturing, sustainable manufacturing/processing, circuits, etc., to achieve the effects of easy control, cost improvement, and stress drama resolution

Inactive Publication Date: 2014-06-25
DONGGUAN LIWINON ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the above-mentioned defects, the present invention provides a method for manufacturing an ultra-thick high-energy-density polymer lithium-ion battery cell. The battery core wound by this method can reserve an expansion space inside the battery core to alleviate the deformat

Method used

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  • Method for manufacturing super-thick high-energy-density polymer lithium ion battery cell
  • Method for manufacturing super-thick high-energy-density polymer lithium ion battery cell

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A kind of manufacturing method of ultra-thick high-energy-density polymer lithium-ion electric core of the present invention comprises the following processing steps:

[0031] Step A, according to the formula and process requirements, prepare the positive electrode sheet, the separator and the negative electrode sheet, and set aside;

[0032] Step B. Select the cell winding equipment, first wind the separator half a layer, and then insert the negative electrode sheet, then wind the separator and the negative electrode sheet together for one layer, insert the positive electrode sheet, and then insert the separator, negative electrode sheet and The positive plates are wound together;

[0033] Step C, the total number of winding layers of the battery core is 18 layers; when the number of winding layers reaches 12 layers, a plastic hose is inserted between the separator and the positive electrode sheet or the negative electrode sheet;

[0034] Step E, continue winding unti...

Embodiment 2

[0043] A kind of manufacturing method of ultra-thick high-energy-density polymer lithium-ion electric core of the present invention comprises the following processing steps:

[0044] Step A, according to the formula and process requirements, prepare the positive electrode sheet, the separator and the negative electrode sheet, and set aside;

[0045] Step B. Select the cell winding equipment, first wind the separator half a layer, and then insert the negative electrode sheet, then wind the separator and the negative electrode sheet together for one layer, insert the positive electrode sheet, and then insert the separator, negative electrode sheet and The positive plates are wound together;

[0046] Step C, the total number of winding layers of the battery core is 38 layers; when the number of winding layers reaches 14 layers, insert the plastic hose between the separator and the positive or negative electrode sheet;

[0047] Step D, when the number of winding layers of the bat...

Embodiment 3

[0057] A kind of manufacturing method of ultra-thick high-energy-density polymer lithium-ion electric core of the present invention comprises the following processing steps:

[0058] Step A, according to the formula and process requirements, prepare the positive electrode sheet, the separator and the negative electrode sheet, and set aside;

[0059] Step B. Select the cell winding equipment, first wind the separator half a layer, then insert the negative electrode sheet, then wind the separator and the negative electrode sheet together for one layer, insert the positive electrode sheet, and then insert the separator, negative electrode sheet and The positive plates are wound together;

[0060] Step C, the total number of winding layers of the battery core is 54 layers; when the number of winding layers reaches 22 layers, a plastic hose is inserted between the separator and the positive electrode sheet or the negative electrode sheet;

[0061] Step D, when the number of windin...

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Abstract

The invention relates to a method for manufacturing a super-thick high-energy-density polymer lithium ion battery cell. The method comprises the following steps: preparing a positive plate, an isolating membrane and a negative plate; winding the isolating membrane for a half layer, inserting the negative plate, winding the isolating membrane and the negative plate for a layer, inserting the positive plate, and winding the isolating membrane, the negative plate and the positive plate together, wherein the total number of winding layers of the battery cell is 12-76; when the number of the winding layers is 12-36, inserting a plastic hose between the isolating membrane and the positive plate or between the isolating membrane and the negative plate; when the total number of the winding layers is larger than 36, entering a step D; when the total number of the winding layers is less than or equal to 36, entering a step E; when the number of the winding layers of the battery cell is increased to 12-36 in the step D, inserting the plastic hose between the isolating membrane and the positive plate or between the isolating membrane and the negative plate; continuously winding in the step E until the number of the winding layers reaches a preset number; and detaching the plastic hose from the battery cell to obtain the finished product. According to the battery cell produced by the method, the problem that the battery cell is deformed can be solved.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a method for manufacturing an ultra-thick high-energy-density polymer lithium-ion battery cell. Background technique [0002] Because polymer lithium-ion batteries have the characteristics of high energy density, lightness and portability, and customizable appearance, the demand for such batteries has increased sharply with the diversification of digital products. In addition, such as mobile power supplies, special equipment, etc. have increased requirements for the capacity of lithium-ion batteries, and the demand for some large-size, high-capacity battery models is increasing. Close to 12.0mm. [0003] There are currently two types of internal pole piece structures in lithium-ion batteries: one is the more common wound-type pole piece structure, which uses a positive electrode, one or two separators and a negative electrode through manual, semi-automatic or Fully au...

Claims

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Application Information

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IPC IPC(8): H01M10/0587
CPCH01M10/0525H01M10/0587Y02E60/10Y02P70/50
Inventor 戈志敏于紫阳
Owner DONGGUAN LIWINON ENERGY TECH
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