WO2022033022A1 - 一种锂电池电芯多张叠片设备及叠片方法 - Google Patents

一种锂电池电芯多张叠片设备及叠片方法 Download PDF

Info

Publication number
WO2022033022A1
WO2022033022A1 PCT/CN2021/080163 CN2021080163W WO2022033022A1 WO 2022033022 A1 WO2022033022 A1 WO 2022033022A1 CN 2021080163 W CN2021080163 W CN 2021080163W WO 2022033022 A1 WO2022033022 A1 WO 2022033022A1
Authority
WO
WIPO (PCT)
Prior art keywords
lamination
pole pieces
position correction
pole piece
right sides
Prior art date
Application number
PCT/CN2021/080163
Other languages
English (en)
French (fr)
Inventor
何林
Original Assignee
深圳市光大激光科技股份有限公司
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 深圳市光大激光科技股份有限公司 filed Critical 深圳市光大激光科技股份有限公司
Publication of WO2022033022A1 publication Critical patent/WO2022033022A1/zh

Links

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
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • 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
    • H01M10/052—Li-accumulators
    • 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
    • H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
    • 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
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/005—Devices for making primary cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/14—Cells with non-aqueous electrolyte
    • 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 battery stacking process, and more particularly, to a lithium battery cell stacking device and a stacking method.
  • the lithium battery stacking technology is a lithium battery manufacturing technology that uses a separator to separate the positive and negative electrode sheets (positive electrode sheet, negative electrode sheet), and stacks the electrode sheet and the separator in sequence to make it a battery cell.
  • the basic principle and working process are as follows: use the diaphragm assembly to pull out the rolled diaphragm, and cover the diaphragm between the positive and negative plates through the reciprocating motion of the lamination table or diaphragm assembly. , and the negative electrode sheets are alternately placed between the separators, and the positive and negative electrode sheets are separated by the separator. The above process is repeated many times, and finally a lithium battery stack with a certain thickness is formed.
  • the existing lamination device adopts a single pole piece lamination method. Only one pole piece is placed on the lamination table at a time by a manipulator or other transfer device for lamination, and multiple pole pieces cannot be placed on the same lamination table at the same time. , it is impossible to stack multiple pole pieces at the same time, resulting in low stacking efficiency.
  • the purpose of the present application is to overcome the deficiencies of the prior art, and to provide a lithium battery cell stacking device and stacking method in which a plurality of pole pieces are stacked on the same stacking table at the same time.
  • a lithium battery cell multiple lamination equipment including a lamination table, a diaphragm unwinding mechanism, a film coating device, and a position correction platform; a diaphragm is arranged above the lamination table.
  • Unwinding mechanism and film coating device the film coating device is used to introduce the diaphragm of the diaphragm unwinding mechanism into the lamination table; the left and right sides of the lamination table are respectively provided with corresponding position correction platforms for correcting the left and right sides The position of the transmission pole piece.
  • a further technical solution is that a CCD vision device corresponding to the position correction platform is arranged above each of the position correction platforms, and the CCD vision device is used to guide the position correction platform to perform position correction on each pole piece.
  • pole piece material box/pole piece conveying line body also includes a pole piece material box/pole piece conveying line body, and the pole piece material box/pole piece conveying line body is arranged on the left and right sides of the lamination table, and is respectively arranged in the position correction.
  • the outside of the platform is offset to one side of the lamination table.
  • the pole piece conveying line body is a conveying belt device with a vacuum adsorption structure.
  • a further technical solution of the invention is that it further includes a plurality of manipulators, and the manipulators are arranged at preset positions for transporting the pole pieces between each processing procedure.
  • a lamination method which is applicable to the foregoing lithium battery cell multiple lamination equipment, includes the following steps:
  • the manipulators on the left and right sides of the lamination table simultaneously grab the pole pieces after the corrected position, and place them in parallel on the preset position on the lamination table one by one, and the number of the pole pieces placed is the preset value;
  • the film coating device introduces the diaphragm of the diaphragm unwinding mechanism to the top of the lamination table, covering the top of the pole piece at the preset position;
  • the manipulator simultaneously grabs a number of pole pieces to be laminated to the position correction platforms on the left and right sides for position correction, and the position correction platforms on the left and right sides are respectively placed with positive pole pieces and negative poles.
  • the positive and negative electrodes are divided into left and right sides for position correction.
  • the incoming pole piece is preprocessed, and in the process to obtain the pole piece to be laminated, the preprocessing includes the following steps:
  • the unqualified pole pieces in the size inspection are NG rejected, and the good pole pieces after NG rejection are transferred to the vacuum conveying line for buffering.
  • the manipulators on the left and right sides of the lamination stage in the step simultaneously grab the pole pieces after the corrected positions, and place them in parallel on the pre-set positions on the lamination stage one by one, and the number of the pole pieces placed is a preset value.
  • the preset value is any finite natural number greater than or equal to 2, and the maximum value of the preset value is manually selected according to the arrangement of the multiple stacking equipment for lithium battery cells.
  • a lithium battery cell stacking device and stacking method provided by the present application adopts a stacking process in which a plurality of pole pieces are stacked simultaneously on the same stacking table,
  • the lamination efficiency of the lamination device is greatly improved;
  • the lamination process of covering multiple pole pieces with a diaphragm at one time improves the lamination efficiency;
  • the use of multiple pole pieces to feed at the same time improves the pole piece feeding efficiency and reduces the feeding cost;
  • Multiple pole pieces are used for simultaneous blanking to improve blanking efficiency and reduce blanking costs.
  • FIG. 1 is a top view of the lamination device according to Embodiment 1;
  • Fig. 2 is the front view of the apparatus shown in Fig. 1;
  • FIG. 3 is a top view of the lamination device according to Embodiment 2;
  • Fig. 4 is the front view of the apparatus shown in Fig. 3;
  • Fig. 6 is the front view of the apparatus shown in Fig. 5;
  • FIG. 7 is a front view of a schematic block diagram of the process of lamination by the lamination equipment according to Embodiment 4;
  • Fig. 8 is the top view of the schematic flow chart block diagram shown in Fig. 7;
  • FIG. 9 is a front view of a schematic block diagram of a process flow of lamination by the lamination equipment according to Embodiment 5;
  • FIG. 10 is a top view of the schematic block diagram of the process shown in FIG. 9 .
  • Negative conveying belt 1. Positive conveying belt; 2. Positive plate; 3. Positive pole piece; 4. Positive pole UVW alignment platform; 5. Lamination table; 6. Pole piece stacking; 7. Negative pole UVW platform; 8. Negative pole piece; 9 , Negative conveying belt; 10. Negative sheet;
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • plurality means two or more, unless otherwise expressly and specifically defined.
  • connection a connection or a detachable connection
  • connection can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements.
  • connection a connection or a detachable connection
  • connection can be a mechanical connection or an electrical connection
  • connection can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements.
  • specific meanings of the above terms in this application can be understood according to specific situations.
  • a first feature "on” or “under” a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the application provides a device for stacking multiple sheets of lithium battery cells, including a stacking table, a diaphragm unwinding mechanism, a film coating device, and a position correction platform; it also includes a pole piece material box/pole piece conveying line body and several manipulators.
  • a diaphragm unwinding mechanism and a laminating device are set above the lamination table.
  • the laminating device is used to introduce the diaphragm of the diaphragm unwinding mechanism into the lamination table; the left and right sides of the lamination table are respectively provided with corresponding position correction platforms for correcting the left and right sides of the lamination table.
  • the position of the transmission pole pieces on both sides.
  • the pole piece material box/pole piece conveying line body is arranged on the left and right sides of the lamination table, and is respectively set on the side of the position correction platform that deviates from the lamination stage.
  • the pole piece conveying line body is a conveyor belt device with a vacuum adsorption structure.
  • the manipulator is set at a preset position for transporting the pole pieces between the various processing steps.
  • a corresponding CCD vision device is arranged above each position correction platform, and the vision device is used to guide the position correction platform to correct the position of each pole piece.
  • a lithium battery stacking machine or a die-cutting/cutting/stacking machine two or more pole pieces are stacked on the same lamination table at the same time, and a fixed interval value is set between the pole pieces.
  • a diaphragm unwinding mechanism and a film coating device for introducing the diaphragm into the lamination table are respectively set above the lamination table; on both sides of the lamination table, a pole piece position correction platform is set, and a CCD vision device is set above the position correction platform to guide the position The correction platform performs position correction for each pole piece.
  • a pole piece material box or a pole piece conveying line body is respectively arranged.
  • the lamination manipulator When stacking, take out a plurality of pole pieces from the pole piece material box or conveying line body at the same time, and place them on the corresponding position correction platform for position correction at the same time. After the position correction is completed, multiple pole pieces are simultaneously transported to the same lamination table by the lamination manipulator for stacking.
  • the positive electrode flow process of the die-cutting/cutting/stacking machine as an example: the incoming material is the coil material with the tabs already formed or the tabs not cut out.
  • the present application also provides a lamination method, which is suitable for the aforementioned device for laminating multiple sheets of lithium battery cells, including the following steps:
  • Step 100 Pre-processing the incoming pole pieces, and processing to obtain the pole pieces to be stacked;
  • Step 200 simultaneously grab a number of pole pieces to be laminated to the position correction platforms on the left and right sides by the manipulator for position correction;
  • Step 300 The manipulators on the left and right sides of the lamination table simultaneously grab the pole pieces after the corrected positions, and place them in parallel on the pre-set positions on the lamination table one by one, and the number of the placed pole pieces is a preset value;
  • Step 400 the film coating device introduces the diaphragm of the diaphragm unwinding mechanism to the top of the lamination table, covering the top of the pole piece at the preset position;
  • Step 500 Repeat the above steps until the number of stacked pole pieces reaches the preset number of layers, and the stacking of cells is completed.
  • Step 200 Grab a number of pole pieces to be stacked at the same time by the manipulator to the position correction platforms on the left and right sides for position correction.
  • the position correction platforms on the left and right sides are respectively placed with positive pole pieces and negative pole pieces.
  • the positive pole piece and the negative pole piece are divided into Correct the position on the left and right sides.
  • Step 100 Pre-processing the incoming pole pieces, and processing to obtain the pole pieces to be stacked, the pre-processing includes the following steps:
  • Step 101 control the tension and rectify the deviation after unwinding the rolled incoming material
  • Step 102 Die-cut/cut the incoming material after the deviation correction is completed into pole pieces
  • Step 103 Perform surface brushing and size detection on the pole piece after die cutting/cutting
  • Step 104 Perform NG rejection on the unqualified pole pieces in the size detection, and transfer the good pole pieces after NG rejection to the vacuum conveying line for buffering.
  • Step 300 The manipulators on the left and right sides of the lamination table simultaneously grab the pole pieces after the corrected positions, and place them in parallel on the pre-set positions on the lamination table one by one. Any finite natural number greater than or equal to 2, the maximum preset value is manually selected according to the arrangement of multiple stacking equipment for lithium battery cells.
  • the specific embodiment 1 provides an example of stacking two pole pieces on the same lamination stage at the same time, the first lamination stage 11 is arranged at the bottom, and is stacked in sequence on the top of the first lamination stage 11
  • the first diaphragm 12 , the first pole piece 13 , the first diaphragm 12 , the first pole piece 13 . . . the first diaphragm 12 is unloaded as a whole until the stacking of the laminate is completed.
  • the upper and lower adjacent first pole pieces 13 separated by the first diaphragm 12 have opposite polarities, that is, positive pole pieces, negative pole pieces, positive pole pieces, negative pole pieces... (or negative pole pieces, positive pole pieces, negative pole pieces, The arrangement and combination of positive plates).
  • the specific embodiment 2 provides an example of stacking 5 pole pieces on the same lamination stage at the same time.
  • the second diaphragm 22 , the second pole piece 23 , the second diaphragm 22 , the second pole piece 23 . . . the second diaphragm 22 is unloaded as a whole until the stacking is completed.
  • the upper and lower adjacent second pole pieces 23 separated by the second separator 22 have opposite polarities, that is, positive pole pieces, negative pole pieces, positive pole pieces, negative pole pieces... (or negative pole pieces, positive pole pieces, negative pole pieces, The arrangement and combination of positive plates).
  • the specific embodiment 3 provides an example in which 10 pole pieces are stacked on the same lamination stage at the same time.
  • the third diaphragm 32 , the third pole piece 33 , the third diaphragm 32 , the third pole piece 33 . . . the third diaphragm 32 is unloaded as a whole after the stacking is completed.
  • the upper and lower adjacent third pole pieces 33 separated by the third diaphragm 32 have opposite polarities, that is, positive pole pieces, negative pole pieces, positive pole pieces, negative pole pieces... (or negative pole pieces, positive pole pieces, negative pole pieces, The arrangement and combination of positive plates).
  • the definition of multiple stacks is described with the example of stacking 2 pole pieces, 5 pole pieces and 10 pole pieces at the same time, but it is not limited to The above-mentioned number, the specific number can be any reasonable natural number greater than 2.
  • the specific embodiment 4 specifically describes a process of incoming material when the upper pole pieces of the die-cutting/cutting/laminating machine are stacked at the same time, the positive pole piece 2 is adsorbed on the positive pole conveying belt 1 by vacuum , run forward in sequence, leaving a fixed gap between the pole pieces, the negative pole piece 10 is adsorbed on the negative pole conveying belt 9 by vacuum, and runs forward in turn, leaving a fixed gap between the pole pieces.
  • the bad pole pieces are removed, and the good positive pole piece 3 is transferred to the positive pole position correction platform 4. Under the guidance of the CCD, the position of each pole piece is individually corrected.
  • the negative pole piece 10 after the size inspection has bad pole pieces.
  • the pieces are rejected, and the good pole pieces 8 are transferred to the negative position correction platform 7, and each pole piece is individually calibrated under the guidance of the CCD.
  • the positive electrode good quality pole piece 3 and the negative electrode good quality pole piece 8 are simultaneously transferred to the lamination stage 5 and the separators are stacked alternately, as shown in the pole piece stack 6 .
  • Embodiment 5 is an extension of Embodiment 4.
  • Two lamination stations a lamination station 1 100 and a lamination station 2 200, are set on the die-cutting/cutting/laminating integrated machine.
  • the two lamination stages can be stacked at the same time or one after another.
  • the diaphragm unwinding mechanism 300 is arranged directly above the lamination stage, and each lamination stage is independently provided with a membrane unwinding and film coating mechanism.
  • a lithium battery cell stacking device and stacking method of the present embodiment adopts a stacking process in which multiple pole pieces are stacked on the same stacking table at the same time, which greatly improves the performance of stacking.
  • the lamination efficiency of the device; the lamination process of covering multiple pole pieces with a diaphragm at one time improves the lamination efficiency; the simultaneous feeding of multiple pole pieces improves the pole piece feeding efficiency and reduces the feeding cost; the use of multiple pole pieces at the same time Blanking, improve blanking efficiency and reduce blanking cost.

Abstract

本申请公开了一种锂电池电芯多张叠片设备，包括叠片台、隔膜放卷机构、覆膜装置、位置校正平台；叠片台上方设置隔膜放卷机构和覆膜装置，覆膜装置用于将隔膜放卷机构的隔膜引入叠片台；叠片台左右两侧分别设置对应的位置校正平台，以用于校正左右两侧传输极片的位置。采用多张极片在同一叠片台同时堆叠的叠片工艺，极大地提高了叠片装置的叠片效率；采用隔膜一次覆盖多张极片的覆膜工艺、采用多张极片同时上料、采用多张极片同时下料。通过提高叠片、覆膜、上料、下料工序的加工效率，节省了各个工序的人力物力及时间成本，极大地缩短了锂电池电芯的叠片时长，降低成本支出并提高企业经济效益及竞争力。

Description

一种锂电池电芯多张叠片设备及叠片方法
本申请是以申请号为202010803492.3、申请日为2020年8月11日的中国专利申请为基础，并主张其优先权，该申请的全部内容在此作为整体引入本申请中。
技术领域
本申请涉及锂电池叠片工艺，更具体地说是一种锂电池电芯多张叠片设备及叠片方法。
背景技术
锂电池叠片技术是使用隔膜将正、负极片（正电极片、负电极片）进行隔离，并依次层叠极片和隔膜，使其成为电芯的锂电池制造技术。其基本原理及工作过程为：利用隔膜组件将成卷的隔膜拉出，通过叠片台或隔膜组件的往复运动将隔膜间隔覆盖在正负极片之间，同时，利用机械手或其他转运装置将正、负极片交替放置在隔膜之间，由隔膜将正、负极片分开。多次重复上述过程，最终形成具有一定厚度的锂电池叠片体。
现有的叠片装置采用单张极片叠片方式，通过机械手或其他转运装置一次只放置一张极片到叠片台上进行叠片，不能同时放置多张极片到同一叠片台上，不能进行多张极片同时叠片，因而导致叠片效率较低。
申请内容
本申请的目的在于克服现有技术的不足，提供一种多张极片在同一叠片台上同时进行叠片的锂电池电芯多张叠片设备及叠片方法。
为实现上述目的，本申请采用以下技术方案：一种锂电池电芯多张叠片设备，包括叠片台、隔膜放卷机构、覆膜装置、位置校正平台；所述叠片台上方设置隔膜放卷机构和覆膜装置，所述覆膜装置用于将隔膜放卷机构的隔膜引入叠片台；所述叠片台左右两侧分别设置对应的位置校正平台，以用于校正左右两侧传输极片的位置。
其进一步技术方案为，每一所述位置校正平台上方设有与位置校正平台对应的CCD视觉装置，所述CCD视觉装置用于引导位置校正平台对每张极片进行位置矫正。
其进一步技术方案为，还包括极片料盒/极片输送线体，所述极片料盒/极片输送线体设于所述叠片台左右两侧，且分别设于所述位置矫正平台外部偏离叠片台的一侧。
其进一步技术方案为，所述极片输送线体为具有真空吸附结构的输送皮带装置。
其进一步技术方案为，还包括若干机械手，所述机械手设于预设位置用于搬运各个加工工序间的极片。
一种叠片方法，适用于前述的锂电池电芯多张叠片设备，包括以下步骤：
对极片来料进行预加工，加工获得待叠片极片；
通过机械手同时抓取若干片待叠片极片至左右两侧的位置校正平台进行位置矫正；
叠片台左右两侧的机械手同时抓取矫正位置后的极片，并逐一并列放置于叠片台上的预设位置，放置的极片数目为预设值；
覆膜装置引入隔膜放卷机构的隔膜至叠片台上方，覆盖在预设位置的极片上方；
重复上述步骤，直至极片叠片数目至预设层数，完成电芯堆叠。
其进一步技术方案为，所述步骤通过机械手同时抓取若干片待叠片极片至左右两侧的位置校正平台进行位置矫正中，所述左右两侧的位置校正平台分别对应放置正极片和负极片，所述正极片和负极片分左右两侧进行位置矫正。
其进一步技术方案为，所述步骤对极片来料进行预加工，加工获得待叠片极片中，所述预加工包括以下步骤：
对卷状来料进行放卷后控制张力并纠偏；
将纠偏完成后的来料进行模切/裁切成极片；
对模切/裁切完成后的极片进行表面刷粉和尺寸检测；
对尺寸检测中不合格的极片进行NG剔除，NG剔除后的良品极片流转至真空输送线进行缓存。
其进一步技术方案为，所述步骤叠片台左右两侧的机械手同时抓取矫正位置后的极片，并逐一并列放置于叠片台上的预设位置，放置的极片数目为预设值中，所述预设值为大于等于2的任意有限自然数，所述预设值最大值依据锂电池电芯多张叠片设备的排布方式进行人工选定。
本申请与现有技术相比的有益效果是：本申请提供的一种锂电池电芯多张叠片设备及叠片方法，采用多张极片在同一叠片台同时堆叠的叠片工艺，极大地提高了叠片装置的叠片效率；采用隔膜一次覆盖多张极片的覆膜工艺，提高覆膜效率；采用多张极片同时上料，提高极片上料效率，降低上料成本；采用多张极片同时下料，提高下料效率，降低下料成本。通过提高叠片、覆膜、上料、下料工序的加工效率，节省了各个工序的人力物力及时间成本，极大地缩短了锂电池电芯的叠片时长，降低成本支出并提高企业经济效益及竞争力。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请技术手段，可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征及优点能够更明显易懂，以下特举较佳实施例，详细说明如下。
附图说明
图1为实施例1所述叠片设备的的俯视图；
图2为图1所示设备的前视图；
图3为实施例2所述叠片设备的的俯视图；
图4为图3所示设备的前视图；
图5为实施例3所述叠片设备的的俯视图；
图6为图5所示设备的前视图；
图7为实施例4所述叠片设备进行叠片的流程示意框图的前视图；
图8为图7所示流程示意框图的俯视图；
图9为实施例5所述叠片设备进行叠片的流程示意框图的前视图；
图10为图9所示流程示意框图的俯视图。
附图标记
11、第一叠片台；12、第一隔膜；13、第一极片；21、第二叠片台；22、第二隔膜；23、第二极片；31、第三叠片台；32、第三隔膜；33、第三极片；
1、正极输送皮带；2、正极片；3、正极极片；4、正极UVW对位平台；5、叠片台；6、极片堆叠；7、负极UVW平台；8、负极极片；9、负极输送皮带；10、负极片；
100、叠片台一；200、叠片台二；300、隔膜放卷机构。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，下面结合附图和具体实施方式对本申请作进一步详细说明。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不应理解为必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。此外，本领域的技术人员可以将本说明书中描述的不同实施例或示例进行结合和组合。
本申请提供了一种锂电池电芯多张叠片设备，包括叠片台、隔膜放卷机构、覆膜装置、位置校正平台；还包括极片料盒/极片输送线体和若干机械手。
叠片台上方设置隔膜放卷机构和覆膜装置，覆膜装置用于将隔膜放卷机构的隔膜引入叠片台；叠片台左右两侧分别设置对应的位置校正平台，以用于校正左右两侧传输极片的位置。极片料盒/极片输送线体设于叠片台左右两侧，且分别设于位置矫正平台外部偏离叠片台的一侧，极片输送线体为具有真空吸附结构的输送皮带装置。机械手设于预设位置用于搬运各个加工工序间的极片。
每一位置校正平台上方设有对应的CCD视觉装置，视觉装置用于引导位置校正平台对每张极片进行位置矫正。
以锂电池叠片机或模切/裁断/叠片一体机为例，每次在同一叠片台上同时堆叠两张或两张以上的极片，极片之间设置固定间隔值。在叠片台的上方分别设置隔膜放卷机构，以及隔膜引入叠片台的覆膜装置；在叠片台的两侧，设置极片位置校正平台，位置校正平台上方设置CCD视觉装置，引导位置校正平台对每张极片进行位置校正。在位置校正平台偏离叠片台的一侧，分别设置极片料盒或极片输送线体。叠片时，从极片料盒或输送线体同时取出多张极片，同时放置在对应的位置校正平台上进行位置校正。位置校正完成后，通过叠片机械手将多张极片同时搬运至同一叠片台进行堆叠。具体地，以模切/裁断/叠片一体机的正极片流转过程为例：来料为极耳已经成型或未切出极耳的卷料，通过放卷—张力控制—纠偏—模切/裁切成极片—刷粉—尺寸检测—NG剔除—良品流转至真空输送线—缓存—机械手多片同时抓取—位置校正平台—多片极片单独校正位置—叠片机械手同时抓取—同时并列放置在同一叠片台上—隔膜连续多片覆膜。负极片经过同样的流程，和正极片以及隔膜交错堆叠，最终形成层叠体并下料，完成电芯的堆叠。
本申请还提供一种叠片方法，适用于前述的锂电池电芯多张叠片设备，包括以下步骤：
步骤100：对极片来料进行预加工，加工获得待叠片极片；
步骤200：通过机械手同时抓取若干片待叠片极片至左右两侧的位置校正平台进行位置矫正；
步骤300：叠片台左右两侧的机械手同时抓取矫正位置后的极片，并逐一并列放置于叠片台上的预设位置，放置的极片数目为预设值；
步骤400：覆膜装置引入隔膜放卷机构的隔膜至叠片台上方，覆盖在预设位置的极片上方；
步骤500：重复上述步骤，直至极片叠片数目至预设层数，完成电芯堆叠。
步骤200：通过机械手同时抓取若干片待叠片极片至左右两侧的位置校正平台进行位置矫正中，左右两侧的位置校正平台分别对应放置正极片和负极片，正极片和负极片分左右两侧进行位置矫正。
步骤100：对极片来料进行预加工，加工获得待叠片极片中，预加工包括以下步骤：
步骤101：对卷状来料进行放卷后控制张力并纠偏；
步骤102：将纠偏完成后的来料进行模切/裁切成极片；
步骤103：对模切/裁切完成后的极片进行表面刷粉和尺寸检测；
步骤104：对尺寸检测中不合格的极片进行NG剔除，NG剔除后的良品极片流转至真空输送线进行缓存。
步骤300：叠片台左右两侧的机械手同时抓取矫正位置后的极片，并逐一并列放置于叠片台上的预设位置，放置的极片数目为预设值中，预设值为大于等于2的任意有限自然数，预设值最大值依据锂电池电芯多张叠片设备的排布方式进行人工选定。
以下结合附图对以上所述的锂电池电芯多张叠片设备及叠片方法进行具体阐释。
请参阅图1-2，具体实施例1提供了2张极片同时在同一叠片台上堆叠的示例，第一叠片台11设置在最下方，在第一叠片台11的上面依次堆叠第一隔膜12，第一极片13，第一隔膜12，第一极片13……第一隔膜12，直至层叠体堆叠完成后整体下料。需要指出的是第一隔膜12间隔的上下相邻的第一极片13电极性相反，即分别为正极片、负极片、正极片、负极片……（或负极片、正极片、负极片、正极片……）的排列组合。
请参阅图3-4，具体实施例2提供了5张极片同时在同一叠片台上堆叠的示例，第二叠片台21设置在最下方，在第二叠片台21的上面依次堆叠第二隔膜22，第二极片23，第二隔膜22，第二极片23……第二隔膜22，直至层叠体堆叠完成后整体下料。需要指出的是第二隔膜22间隔的上下相邻的第二极片23电极性相反，即分别为正极片、负极片、正极片、负极片……（或负极片、正极片、负极片、正极片……）的排列组合。
请参阅图5-6，具体实施例3提供了10张极片同时在同一叠片台上堆叠的示例，第三叠片台31设置在最下方，在第三叠片台31的上面依次堆叠第三隔膜32，第三极片33，第三隔膜32，第三极片33……第三隔膜32，直至层叠体堆叠完成后整体下料。需要指出的是第三隔膜32间隔的上下相邻的第三极片33电极性相反，即分别为正极片、负极片、正极片、负极片……（或负极片、正极片、负极片、正极片……）的排列组合。
在图1-6所示的具体实施例1-3中，分别用2张极片和5张极片以及10张极片同时堆叠的示例分别描述了多张堆叠的定义，但不仅仅局限于上述数量，具体数量可以是大于2张的任意合理自然数。
请参阅图7-8，具体实施例4具体描述了模切/裁断/叠片一体机上极片在多张同时堆叠时的一种来料流程，正极片2通过真空吸附在正极输送皮带1上，依次向前运行，极片之间留有固定间隙，负极片10通过真空吸附在负极输送皮带9上，依次向前运行，极片之间留有固定间隙。在尺寸检测后不良极片被剔除，良品正极极片3被转移至正极位置校正平台4上，在CCD引导下单独每张极片进行位置校正，同样，负极极片10在尺寸检测后不良极片被剔除，良品极片8被转移至负极位置校正平台7上，在CCD引导下单独每张极片进行位置校正。位置校正完成后，正极良品极片3和负极良品极片8被同时转移至叠片台5上和隔膜交错层叠，如极片堆叠6所示叠片。
请参阅图9-10,实施例5为实施例4的的延申，在模切/裁断/叠片一体机上设置了叠片台一100和叠片台二200共两个叠片台，该两个叠片台可同时堆叠也可依次先后堆叠，隔膜放卷机构300设置在叠片台正上方，每个叠片台单独设置隔膜放卷和覆膜机构。
与现有技术相比，本实施例的一种锂电池电芯多张叠片设备及叠片方法，采用多张极片在同一叠片台同时堆叠的叠片工艺，极大地提高了叠片装置的叠片效率；采用隔膜一次覆盖多张极片的覆膜工艺，提高覆膜效率；采用多张极片同时上料，提高极片上料效率，降低上料成本；采用多张极片同时下料，提高下料效率，降低下料成本。通过提高叠片、覆膜、上料、下料工序的加工效率，节省了各个工序的人力物力及时间成本，极大地缩短了锂电池电芯的叠片时长，降低成本支出并提高企业经济效益及竞争力。
上述仅以实施例来进一步说明本申请的技术内容，以便于读者更容易理解，但不代表本申请的实施方式仅限于此，任何依本申请所做的技术延伸或再创造，均受本申请的保护。本申请的保护范围以权利要求书为准。

Claims (9)

  1. 一种锂电池电芯多张叠片设备，其特征在于，包括叠片台、隔膜放卷机构、覆膜装置、位置校正平台；所述叠片台上方设置隔膜放卷机构和覆膜装置，所述覆膜装置用于将隔膜放卷机构的隔膜引入叠片台；所述叠片台左右两侧分别设置对应的位置校正平台，以用于校正左右两侧传输极片的位置。
  2. 根据权利要求1所述的锂电池电芯多张叠片设备，其特征在于，每一所述位置校正平台上方设有与位置校正平台对应的CCD视觉装置，所述CCD视觉装置用于引导位置校正平台对每张极片进行位置矫正。
  3. 根据权利要求1所述的锂电池电芯多张叠片设备，其特征在于，还包括极片料盒/极片输送线体，所述极片料盒/极片输送线体设于所述叠片台左右两侧，且分别设于所述位置矫正平台外部偏离叠片台的一侧。
  4. 根据权利要求3所述的锂电池电芯多张叠片设备，其特征在于，所述极片输送线体为具有真空吸附结构的输送皮带装置。
  5. 根据权利要求1所述的锂电池电芯多张叠片设备，其特征在于，还包括若干机械手，所述机械手设于预设位置用于搬运各个加工工序间的极片。
  6. 一种叠片方法，其特征在于，适用于权利要求1-5任一项所述的锂电池电芯多张叠片设备，包括以下步骤：
    对极片来料进行预加工，加工获得待叠片极片；
    通过机械手同时抓取若干片待叠片极片至左右两侧的位置校正平台进行位置矫正；
    叠片台左右两侧的机械手同时抓取矫正位置后的极片，并逐一并列放置于叠片台上的预设位置，放置的极片数目为预设值；
    覆膜装置引入隔膜放卷机构的隔膜至叠片台上方，覆盖在预设位置的极片上方；
    重复上述步骤，直至极片叠片数目至预设层数，完成电芯堆叠。
  7. 根据权利要求6所述的叠片方法，其特征在于，所述通过机械手同时抓取若干片待叠片极片至左右两侧的位置校正平台进行位置矫正步骤中，所述左右两侧的位置校正平台分别对应放置正极片和负极片，所述正极片和负极片分左右两侧进行位置矫正。
  8. 根据权利要求6所述的叠片方法，其特征在于，所述对极片来料进行预加工，加工获得待叠片极片步骤中，所述预加工包括以下步骤：
    对卷状来料进行放卷后控制张力并纠偏；
    将纠偏完成后的来料进行模切/裁切成极片；
    对模切/裁切完成后的极片进行表面刷粉和尺寸检测；
    对尺寸检测中不合格的极片进行NG剔除，NG剔除后的良品极片流转至真空输送线进行缓存。
  9. 根据权利要求6所述的叠片方法，其特征在于，所述叠片台左右两侧的机械手同时抓取矫正位置后的极片，并逐一并列放置于叠片台上的预设位置，放置的极片数目为预设值步骤中，所述预设值为大于等于2的任意有限自然数，所述预设值最大值依据锂电池电芯多张叠片设备的排布方式进行人工选定。
PCT/CN2021/080163 2020-08-11 2021-03-11 一种锂电池电芯多张叠片设备及叠片方法 WO2022033022A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010803492.3 2020-08-11
CN202010803492.3A CN111816928A (zh) 2020-08-11 2020-08-11 一种锂电池电芯多张叠片设备及叠片方法

Publications (1)

Publication Number Publication Date
WO2022033022A1 true WO2022033022A1 (zh) 2022-02-17

Family

ID=72858965

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/080163 WO2022033022A1 (zh) 2020-08-11 2021-03-11 一种锂电池电芯多张叠片设备及叠片方法

Country Status (4)

Country Link
EP (1) EP3955355A1 (zh)
KR (1) KR102577140B1 (zh)
CN (1) CN111816928A (zh)
WO (1) WO2022033022A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111816928A (zh) * 2020-08-11 2020-10-23 深圳市光大激光科技股份有限公司 一种锂电池电芯多张叠片设备及叠片方法
CN113113656B (zh) * 2021-04-12 2022-07-19 东莞市佳兴自动化设备科技有限公司 交互进料型动力电池切叠一体机及电芯切叠成型方法
CN115167198B (zh) * 2022-06-21 2023-03-21 沈阳新松机器人自动化股份有限公司 一种双末端机械手的晶圆纠偏系统及方法
CN114976276B (zh) * 2022-06-24 2023-05-09 佛山市天劲新能源科技有限公司 一种锂离子电池高速叠片方法、叠片装置及锂离子电池

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109921084A (zh) * 2019-03-11 2019-06-21 无锡先导智能装备股份有限公司 叠片方法以及叠片设备
CN209104296U (zh) * 2018-08-20 2019-07-12 合肥国轩高科动力能源有限公司 一种锂电池快速叠片装置
CN111816928A (zh) * 2020-08-11 2020-10-23 深圳市光大激光科技股份有限公司 一种锂电池电芯多张叠片设备及叠片方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101842147B1 (ko) * 2016-06-20 2018-03-26 주식회사 엠플러스 불량 극판 취출 효율과 작업 속도를 향상시킨 이차전지용 극판 스태킹 장치
CN209374599U (zh) * 2019-01-14 2019-09-10 广东新宇智能装备有限公司 一种锂电池极片的高效叠片设备
CN110492181A (zh) * 2019-07-05 2019-11-22 哈工大机器人(中山)无人装备与人工智能研究院 一种叠片装置及一体式模叠装置
CN210668543U (zh) * 2019-10-09 2020-06-02 无锡先导智能装备股份有限公司 电芯叠片设备及多工位电芯叠片设备

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209104296U (zh) * 2018-08-20 2019-07-12 合肥国轩高科动力能源有限公司 一种锂电池快速叠片装置
CN109921084A (zh) * 2019-03-11 2019-06-21 无锡先导智能装备股份有限公司 叠片方法以及叠片设备
CN111816928A (zh) * 2020-08-11 2020-10-23 深圳市光大激光科技股份有限公司 一种锂电池电芯多张叠片设备及叠片方法

Also Published As

Publication number Publication date
KR20220020192A (ko) 2022-02-18
KR102577140B1 (ko) 2023-09-08
EP3955355A1 (en) 2022-02-16
CN111816928A (zh) 2020-10-23

Similar Documents

Publication Publication Date Title
WO2022033022A1 (zh) 一种锂电池电芯多张叠片设备及叠片方法
KR101933550B1 (ko) 이차전지의 셀 스택 제조 시스템
KR101956758B1 (ko) 이차전지의 셀 스택 제조장치
KR101956763B1 (ko) 이차전지 셀 제조 시스템의 사행제어장치
CN105914406B (zh) 一种叠片电池连续制造装置
US20230148346A1 (en) Apparatus and Method for Manufacturing Unit Cells
CN112838260B (zh) 一种叠片装置
JP2012018776A (ja) 電極積層装置
KR101806939B1 (ko) 이차전지의 스택형 전극조립체의 제조방법
KR20160067059A (ko) 이차 전지용 전극 조립체 제조 방법
KR20200114799A (ko) 전지 부품 분배장치 및 이를 갖는 이차전지 셀 제조 시스템
KR102192818B1 (ko) 이차전지의 셀 스택 적층 장치 및 방법
US20130298389A1 (en) Method and apparatus for manufacturing an electrochemical energy store
CN210074074U (zh) 一种锂电池极片的模切叠片一体设备
CN212277283U (zh) 电芯及电芯叠片装置
CN111755756A (zh) 电芯叠片方法及装置
CN217881611U (zh) 一种叠片生产线
CN218101372U (zh) 叠片电池的叠片设备及电芯
CN215008307U (zh) 电池制造设备
CN212366048U (zh) 一种锂电池电芯多张叠片设备
CN115528310A (zh) 叠片设备
KR20220162455A (ko) 이차전지의 전극 노칭 및 셀 스택 시스템
KR102606920B1 (ko) 이차전지용 전지 셀 스택킹 시스템
KR20200031347A (ko) 이차전지 적층장치
CN217691263U (zh) 叠片装置及具有其的电池生产线

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21855078

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 12.07.2023)

122 Ep: pct application non-entry in european phase

Ref document number: 21855078

Country of ref document: EP

Kind code of ref document: A1