WO2013010473A1 - Procédé d'enroulement d'une cellule de batterie au lithium-ion - Google Patents

Procédé d'enroulement d'une cellule de batterie au lithium-ion Download PDF

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Publication number
WO2013010473A1
WO2013010473A1 PCT/CN2012/078720 CN2012078720W WO2013010473A1 WO 2013010473 A1 WO2013010473 A1 WO 2013010473A1 CN 2012078720 W CN2012078720 W CN 2012078720W WO 2013010473 A1 WO2013010473 A1 WO 2013010473A1
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WO
WIPO (PCT)
Prior art keywords
pole piece
layer
adjacent
tabs
thickness
Prior art date
Application number
PCT/CN2012/078720
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English (en)
Chinese (zh)
Inventor
吴学科
冯庆枝
王立松
Original Assignee
深圳市吉阳自动化科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市吉阳自动化科技有限公司 filed Critical 深圳市吉阳自动化科技有限公司
Publication of WO2013010473A1 publication Critical patent/WO2013010473A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present application relates to a lithium ion battery, and more particularly to a lithium ion battery cell winding method. Background technique
  • Fig. 1 is a schematic view showing the structure of a ring-shaped battery cell, which includes a cell reel 1 1 , a pole piece 1 2 and a tab 13 .
  • 2 is a schematic view showing the structure of each layer of cells after winding of the battery material, including the negative electrode sheet 21, the positive electrode sheet 23, and the separator 22. In different processes, the positions of the positive and negative electrodes can be interchanged.
  • Each layer of cells contains two layers of separator, a positive electrode sheet and a negative electrode sheet.
  • the spacing calculation method used in the industry is to use the first winding, the polar ear is cut at the corresponding position on the winding core, and then the pole piece is deployed to manually measure the length of each pitch as the final cutting length.
  • the workload of this method is extremely large, and it is difficult to accurately position the tabs at one time because of human measurement errors. It is necessary to measure a number of times, and the measurement result is quite troublesome to input in the program, which takes a lot of manpower and time.
  • materials or processes are replaced, all the previous data will be invalidated. Therefore, when making large-capacity batteries, this kind of prescription
  • the success rate of the law is very low.
  • the technical problem to be solved by the present application is to provide a lithium ion battery cell winding method capable of improving efficiency in view of the deficiencies of the prior art.
  • a method for winding a lithium ion battery cell comprising the following steps:
  • the inner pole piece cut out of the tab, the outer pole piece cut out of the tab and the diaphragm are placed in a predetermined order and then wound into a battery core.
  • the utility model has the beneficial effects that: in the specific implementation manner of the present application, since the adjacent pole pitch of the inner pole piece and the adjacent pole pitch of the outer pole piece are separately calculated, respectively, the inner layer is cut according to the calculation result. After the pole piece and the outer pole piece are wound into a battery core, the position of the ear can be accurately determined, which not only saves working time, but also saves a lot of manpower and improves work efficiency.
  • Figure 1 is a schematic view of the structure of a ring battery cell
  • Figure 2 is a schematic view of the structure of each layer of cells
  • Figure 3 is a schematic view of the pole piece after cutting the tab
  • FIG. 4 is a flow chart of a method for winding a lithium ion battery cell according to an embodiment of the present invention
  • FIG. 5 is a flow chart of obtaining a distance between adjacent tabs in a specific embodiment of the present application.
  • Winding alignment is mainly affected by the following factors, one is not The thickness of the diaphragm used in the same process battery is inconsistent with the thickness of the positive and negative electrodes; the second is that the thickness of the different lengths on the same roll piece is inconsistent; the third is that the tension between the inner core and the outer core is inconsistent during the winding process; The initial radius ⁇ . different.
  • Figure 3 is a schematic view of the pole piece after cutting the tab.
  • the pole piece may be a positive electrode or a negative electrode.
  • ⁇ ] is the width of the i-th tab
  • L Note is the spacing between the i-1th tab and the i-th tab.
  • each turn of the winding is a standard circle, and the circumference can be calculated according to the diameter of the ring. And on this basis to find the pole spacing.
  • the lithium ion battery cell winding method of the present application includes the following steps:
  • Step 401 Prepare the cell material.
  • Step 402 Measure the parameters, and calculate the distance between adjacent tabs of the inner pole piece and the adjacent pole pitch of the outer pole piece according to a predetermined formula.
  • the inner layer of each layer of cells is a negative pole piece and the outer layer is a positive electrode sheet; in another embodiment, the inner layer of each layer of cells is a positive electrode sheet and the outer layer is a negative electrode sheet.
  • Step 403 Cutting the tabs according to the calculated adjacent pole pitch of the inner pole piece and the adjacent pole pitch of the outer pole piece.
  • Step 404 The inner pole piece cut out of the tab, the outer pole piece cut out of the tab, and the separator are placed in a predetermined order, and then wound into a battery core.
  • step 402 specifically comprises the following steps: Step 501: measuring the thickness of the pole piece disposed in the inner layer; setting outside the thickness of the outer layer of the pole piece S; the thickness of the diaphragm 5 film. Step 502: Determine the thickness ⁇ of each layer of cells.
  • Each layer of cells includes two layers of separators, a layer of positive electrodes, a layer of negative electrodes, and a gap therebetween.
  • Step 503 Calculate the adjacent pole experimental spacing L of the pole piece material disposed in the inner layer according to the thickness ⁇ of each layer of the core, respectively (inner and the pole piece material disposed on the outer layer) Adjacent polar test spacing: ( i > 1 ) Equation 1: r 0 +( _l) + S +S film + (
  • the cell thickness of each layer thickness can be obtained by ⁇ pole piece inner layer, the outer pole piece and the thickness of the outer film layers 5 obtained by adding the thickness of the diaphragm.
  • each layer of cell thickness ⁇ can be obtained by:
  • Step 504 Cut the inner pole piece tab according to the calculated shape, and cut out the outer pole piece tab according to the calculation.
  • Step 505 Winding the inner pole piece, the outer pole piece and the diaphragm into experimental batteries, and measuring the total deviation of the alignment between each K adjacent tabs ATM ⁇ ; k is a stage coefficient (ie, per k One pitch change once interval compensation).
  • Step 506 Calculate the offset value of each phase according to Formula 3
  • Step 507 Substituting the calculated pitch compensation values of each stage into Equation 4 and Equation 5, respectively, calculating the adjacent pole pitch of the inner layer ( and the spacing of the adjacent adjacent poles ( :

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

La présente invention a trait à un procédé d'enroulement d'une cellule de batterie au lithium-ion, lequel procédé comprend les étapes suivantes consistant : A. à préparer un matériau de cellule ; B. à mesurer un paramètre et à calculer la distance entre les languettes adjacentes d'une pièce polaire de couche interne et la distance entre les languettes adjacentes d'une pièce polaire de couche externe conformément à une formule prédéterminée ; C. à couper les languettes conformément à la distance calculée entre les languettes adjacentes de la pièce polaire de couche interne et à la distance calculée entre les languettes adjacentes de la pièce polaire de couche externe ; D. à placer la pièce polaire de couche interne dotée des languettes coupées, la pièce polaire de couche externe dotée des languettes coupées et un film isolant dans un ordre prédéterminé, puis à les enrouler de manière à obtenir une cellule. Dans la présente application, la distance entre les languettes adjacentes de la pièce polaire de couche interne et la distance entre les languettes adjacentes de la pièce polaire de couche externe sont tout d'abord calculées, puis les languettes de la pièce polaire de couche interne et les languettes de la pièce polaire de couche externe sont coupées en fonction du résultat du calcul, et les pièces ci-dessus sont enroulées de manière à obtenir la cellule. Par conséquent, il est possible de déterminer avec précision les positions des languettes, d'économiser du temps de travail et de la main-d'œuvre, et d'améliorer le rendement du travail.
PCT/CN2012/078720 2011-07-15 2012-07-16 Procédé d'enroulement d'une cellule de batterie au lithium-ion WO2013010473A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110199328.7 2011-07-15
CN201110199328.7A CN102881946B (zh) 2011-07-15 2011-07-15 一种锂离子电池电芯卷绕方法

Publications (1)

Publication Number Publication Date
WO2013010473A1 true WO2013010473A1 (fr) 2013-01-24

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PCT/CN2012/078720 WO2013010473A1 (fr) 2011-07-15 2012-07-16 Procédé d'enroulement d'une cellule de batterie au lithium-ion

Country Status (2)

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CN (1) CN102881946B (fr)
WO (1) WO2013010473A1 (fr)

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CN109342954A (zh) * 2018-10-25 2019-02-15 东莞塔菲尔新能源科技有限公司 一种电池测试分析结构及其制造方法和电池测试分析方法
CN112053326A (zh) * 2020-08-13 2020-12-08 无锡先导智能装备股份有限公司 电芯对齐度检测方法、系统、装置和设备
CN112179734A (zh) * 2020-09-28 2021-01-05 山东聚能锂电池科技有限公司 一种实验用去除极片极耳部位敷料的方法
CN113569396A (zh) * 2021-07-16 2021-10-29 秦皇岛市芯驰光电科技有限公司 一种圆柱形锂电池结构设计模拟仿真分析方法
CN113591308A (zh) * 2021-07-30 2021-11-02 广东利元亨智能装备股份有限公司 卷绕电芯的质量评估方法、装置、电子设备及存储介质
CN114975864A (zh) * 2021-02-23 2022-08-30 北京小米移动软件有限公司 极片、电芯结构、锂电池以及电子设备
CN115275365A (zh) * 2019-09-25 2022-11-01 荣耀终端有限公司 支持高功率快充的电池模组、充电模组和电子设备
WO2023216152A1 (fr) * 2022-05-11 2023-11-16 宁德时代新能源科技股份有限公司 Procédé et appareil de segmentation de rouleau de feuille d'électrode, dispositif électronique et support d'enregistrement

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DE102014200011A1 (de) * 2014-01-03 2015-07-09 Robert Bosch Gmbh Elektroden für Batteriezellen
CN104269579B (zh) * 2014-08-27 2016-09-07 深圳市雄韬电源科技股份有限公司 一种电芯的制备方法和圆柱形电池
DE102015201652A1 (de) * 2015-01-30 2016-08-04 Robert Bosch Gmbh Batteriezelle, Verfahren zum Herstellen eines Elektrodenwickels für eine Batteriezelle und Batteriesystem
CN106257710A (zh) * 2015-06-17 2016-12-28 深圳市沃特玛电池有限公司 一种多极耳变尺寸的高倍率锂离子电池
CN107685200A (zh) * 2017-08-28 2018-02-13 浙江永宏电气股份有限公司 圆心电池极耳非线性裁切方法
CN108172883B (zh) * 2017-12-20 2020-03-17 惠州亿纬锂能股份有限公司 一种电池卷芯参数的计算方法、装置、设备及存储介质
CN113517472B (zh) * 2021-03-18 2022-12-23 河南鑫泉能源科技有限公司 圆柱锂离子电池正极双极耳对位方法
CN113300057B (zh) * 2021-05-24 2022-10-25 广东利元亨智能装备股份有限公司 一种极耳错位调整方法及系统
CN113782819B (zh) * 2021-08-30 2022-08-16 广东利元亨智能装备股份有限公司 一种卷芯极耳边距确定方法及卷绕设备校正方法
CN115064755B (zh) * 2022-08-16 2022-11-25 江苏时代新能源科技有限公司 卷绕方法及卷绕系统

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109342954A (zh) * 2018-10-25 2019-02-15 东莞塔菲尔新能源科技有限公司 一种电池测试分析结构及其制造方法和电池测试分析方法
CN115275365A (zh) * 2019-09-25 2022-11-01 荣耀终端有限公司 支持高功率快充的电池模组、充电模组和电子设备
CN112053326A (zh) * 2020-08-13 2020-12-08 无锡先导智能装备股份有限公司 电芯对齐度检测方法、系统、装置和设备
CN112053326B (zh) * 2020-08-13 2023-12-08 无锡先导智能装备股份有限公司 电芯对齐度检测方法、系统、装置和设备
CN112179734A (zh) * 2020-09-28 2021-01-05 山东聚能锂电池科技有限公司 一种实验用去除极片极耳部位敷料的方法
CN114975864A (zh) * 2021-02-23 2022-08-30 北京小米移动软件有限公司 极片、电芯结构、锂电池以及电子设备
CN113569396A (zh) * 2021-07-16 2021-10-29 秦皇岛市芯驰光电科技有限公司 一种圆柱形锂电池结构设计模拟仿真分析方法
CN113591308A (zh) * 2021-07-30 2021-11-02 广东利元亨智能装备股份有限公司 卷绕电芯的质量评估方法、装置、电子设备及存储介质
WO2023216152A1 (fr) * 2022-05-11 2023-11-16 宁德时代新能源科技股份有限公司 Procédé et appareil de segmentation de rouleau de feuille d'électrode, dispositif électronique et support d'enregistrement

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CN102881946A (zh) 2013-01-16

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