WO2017016400A1 - 锂离子电池叠片装置 - Google Patents

锂离子电池叠片装置 Download PDF

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Publication number
WO2017016400A1
WO2017016400A1 PCT/CN2016/090257 CN2016090257W WO2017016400A1 WO 2017016400 A1 WO2017016400 A1 WO 2017016400A1 CN 2016090257 W CN2016090257 W CN 2016090257W WO 2017016400 A1 WO2017016400 A1 WO 2017016400A1
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WO
WIPO (PCT)
Prior art keywords
lamination
diaphragm
negative electrode
positive electrode
ion battery
Prior art date
Application number
PCT/CN2016/090257
Other languages
English (en)
French (fr)
Inventor
杨永
张宏生
李建军
何向明
李国华
黄术成
王莉
尚玉明
武永存
高剑
Original Assignee
江苏华东锂电技术研究院有限公司
清华大学
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Application filed by 江苏华东锂电技术研究院有限公司, 清华大学 filed Critical 江苏华东锂电技术研究院有限公司
Publication of WO2017016400A1 publication Critical patent/WO2017016400A1/zh
Priority to US15/871,110 priority Critical patent/US10644357B2/en

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    • 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
    • H01M10/05—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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
    • H01M10/058—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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • 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 invention relates to a lithium ion battery lamination device, in particular to a vertical Z-shaped lamination device and a lamination method.
  • Lithium batteries are developing at a high power.
  • high-power lithium batteries are often made by isolating the positive and negative electrodes with a diaphragm, and the diaphragm and the pole piece are repeatedly overlapped, and each battery requires dozens or even hundreds of pole pieces. Cheng, the workload is very large.
  • Lithium-ion battery laminating machine generally uses a manipulator to move left and right, sucking pole pieces in the positive and negative pole pieces, alternately placing the pole pieces on the lamination table, and simultaneously making the separation film move with the suction cup frame and repeatedly folding.
  • the lamination of the battery core is assembled to form a complete battery core; the existing lithium ion battery lamination method generally adopts a three-station lamination method, and the path is completed by taking the film, positioning, and lamination table to complete the lamination.
  • the lithium ion battery laminating machine of the prior art has a serious problem of the tape piece, resulting in multiple pieces in the subsequent lamination body, and the dust on the surface of the positive electrode and the negative electrode is not well removed to cause mutual contamination, which affects the lithium ion battery. performance.
  • a lithium ion battery lamination device comprising a film releasing mechanism, a lamination mechanism and a film collecting mechanism are sequentially disposed, the film releasing mechanism is used for loading a diaphragm and releasing a diaphragm, and the lamination mechanism is used for a positive electrode sheet Laminating the negative electrode sheet with the separator, the lamination mechanism is for laminating the laminated positive electrode sheet, the negative electrode sheet and the separator to form a lithium ion battery, wherein the diaphragm is perpendicular to the horizontal direction Laminating in the take-up mechanism after being sequentially released from the film releasing mechanism and laminating in the lamination mechanism, the lamination mechanism comprising a double-sided clip for clamping the positive electrode sheet, the negative electrode sheet and the separator, The positive electrode and the negative electrode attached to the surface of the separator are rotated and fed to a take-up mechanism.
  • the lithium ion battery lamination device provided by the present invention can laminate the film and the pole piece in a manner perpendicular to the horizontal plane by changing the direction of the lamination, thereby effectively removing dust and effectively reducing the dust.
  • FIG. 1 is a schematic structural view of a lithium ion battery lamination device provided by the present invention.
  • FIG. 2 is a schematic structural view of a double-sided clip in the lithium ion battery lamination device of FIG. 1.
  • FIG. 3 is a schematic structural view of a take-up mechanism of the lithium ion battery lamination device of FIG. 1.
  • FIG. 3 is a schematic structural view of a take-up mechanism of the lithium ion battery lamination device of FIG. 1.
  • FIG. 4 is a schematic structural view of a pole piece cassette in the lithium ion battery lamination device of FIG. 1.
  • Figure 5 is a schematic view of the structure of a rotatable manipulator.
  • FIG. 6 is a schematic view showing a lamination of a lithium ion battery lamination device provided by the present invention.
  • the lithium ion battery lamination device 100 of the present invention comprises a film releasing mechanism 10, a lamination mechanism 20 and a film collecting mechanism 30.
  • the film releasing mechanism 10 is used for loading the diaphragm 40 and releasing the diaphragm 40, and the lamination mechanism 20 is for alternately bonding the positive electrode tab 50 and the negative electrode tab 60 to the diaphragm 40; the sheet taking mechanism 30 is for The separator 40 to which the positive electrode sheet 50 and the negative electrode sheet 60 are bonded is bent and stacked to form a lithium ion battery.
  • the film releasing mechanism 10, the lamination mechanism 20, and the film collecting mechanism 30 may be sequentially disposed along the conveying direction of the diaphragm 40 to form a working line.
  • the film release mechanism 10 is used to load the diaphragm 40 and continuously release the diaphragm 40.
  • the film releasing mechanism 10 includes a diaphragm roller 101 and at least one roller 102.
  • the diaphragm 40 is wound around the diaphragm roller 101 and conveyed by the over roller 102.
  • the plane of the diaphragm 40 forms an angle with the horizontal plane.
  • the over rollers 102 are perpendicular to the horizontal plane, and the diaphragm 40 is attached and bypasses the passing roller 102.
  • the plane of the diaphragm 40 is perpendicular to the horizontal plane. And maintains a state perpendicular to the horizontal plane throughout the process of laminating.
  • the film releasing mechanism 10 includes four passing rollers 102 arranged in parallel, and parallel to the diaphragm roller 101, the plurality of passing rollers 102 may be arranged in a zigzag shape, and the diaphragm 40 is sequentially wound.
  • the plurality of over rollers 102 are passed through to reduce the tension and continuously stabilize the transfer membrane 40.
  • the lamination mechanism 20 is spaced apart from the film releasing mechanism 10 for positioning the diaphragm 40 so that the positive electrode tab 50 or the negative electrode tab 60 can be accurately attached to the surface of the diaphragm 40 to prevent the positive electrode tab 50 or the negative electrode tab. 60 and the diaphragm 40 are offset during attachment.
  • the lamination mechanism 20 includes a lamination positioning platform 201.
  • the lamination positioning platform 201 can include a plurality of positioning sensors (not shown) for positioning the diaphragm 40 and the positive and negative tabs 50, 60.
  • the lamination positioning platform 201 can be moved up and down, and the movement accuracy of the lamination positioning platform 201 is between 10 ⁇ m and 100 ⁇ m to accurately position the positive electrode tab 50 and the negative electrode tab 60.
  • the lamination mechanism 20 includes a plurality of double-sided clips 202 for clamping the positive electrode sheet 50 and the diaphragm 40, and the negative electrode sheet 60 and the diaphragm 40 for fixing.
  • the double-sided clip 202 can be moved along the transport direction of the diaphragm 40 under the driving of a mechanical structure such as a slide rail, thereby driving the diaphragm 40 and the positive electrode tab 50 or the negative electrode tab 60 to move, and preventing the positive electrode.
  • the sheet 50 and the negative electrode sheet 60 are peeled off from the lamination position on the surface of the separator 40 due to the gravity received by the pole piece.
  • the double-sided clip 202 has two sheet-like structures that are opposite and openable to facilitate clamping of the positive electrode sheet 50 and the negative electrode sheet 60.
  • the length of the positive electrode sheet 50 and the negative electrode sheet 60 having one side of the tab is defined as the width of the positive electrode sheet 50 and the negative electrode sheet 60; and the maximum length of the separator 40 can be sandwiched by the double-sided clip 202
  • the length, that is, the width that the double-sided clip 202 can hold along the conveying direction of the diaphragm 40, is defined as the width of the double-sided clip 202, and the width of the double-sided clip 202 can be greater than or equal to the positive tab. 50 and the width of the negative electrode sheet 60, the positive electrode sheet 50 and the negative electrode sheet 60 can be more firmly fixed to prevent misalignment between the pole piece and the separator 40.
  • the opposite inner surfaces of the double-sided clip 202 have a plurality of contact protrusions 2021 for contacting the positive electrode tab 50, the negative electrode tab 60 and the diaphragm 40, and rotating with the positive electrode tab 50 and the negative electrode tab 60.
  • the contact protrusions 2021 can be evenly arranged along the width direction of the double-sided clip 202.
  • the contact protrusions 2021 are made of a flexible material, such as a special adhesive surface, so that the battery pole piece can be firmly fixed.
  • the surface of the contact protrusion 2021 contacting the pole piece and the diaphragm 40 may have a plurality of microporous structures, so that the battery pole piece and the diaphragm 40 can be more strongly adsorbed.
  • the material of the contact protrusion 2021 is smooth silica gel.
  • the take-up mechanism 30 is disposed in the transport direction of the diaphragm 40 and spaced apart from the lamination mechanism 20.
  • a stack of sheets 303 and a first jaw 304 and a second jaw 306 may be included, and the stacking table 303 has There is a stack of flat surfaces to carry the positive electrode sheet 50, the negative electrode sheet 60 and the separator 40 after the lamination.
  • the lamination plane of the lamination station 303 is a vertical plane, and the lamination plane is perpendicular to the surface of the diaphragm 40.
  • the first pressure claw 304 and the second pressure claw 306 are oppositely and spaced apart from each other on both sides of the plane of the lamination to alternately receive the positive electrode sheet 50 and the negative electrode sheet 60 attached to the surface of the diaphragm 40 in sequence.
  • the lamination plane of the lamination station 303 is entered.
  • the first pressure claw 304 and the second pressure claw 306 can be moved relatively close to each other under the action of the cylinder and the screw.
  • the distance between the first pressure claw 304 and the second pressure claw 306 can be separated according to the positive electrode piece.
  • the width of the negative electrode sheet 60 and the negative electrode sheet 60 are selected so as to ensure that the first pressure claw 304 and the second pressure claw 306 can take the positive electrode sheet 50 and the negative electrode sheet 60 into the lamination station 303.
  • the first jaw 304 can be used to compress the positive electrode tab 50
  • the second jaw 306 can be used to compress the negative electrode tab 60.
  • the separator 40 to which the positive electrode sheet 50 and the negative electrode sheet 60 are attached is alternately folded in the order of being close to the plane of the lamination, the first jaw 304 and the second jaw 306 are symmetrically disposed adjacent to the diaphragm 40. Both sides of the laminated plane of the folded side edges are used to press the folded side of the diaphragm 40.
  • the positive electrode sheet 50 and the negative electrode sheet 60 can be respectively carried in a pole piece box 70 before the lamination, and the pole piece box 70 has a tab passage 71 to accommodate the housing.
  • the tabs of the positive electrode tab 50 and the negative electrode tab 60 are described, and the tabs are slidable along the tab channel 71.
  • the pole piece case 70 carrying the positive electrode sheet 50 may be spaced apart from the pole piece case 70 carrying the negative electrode sheet 60.
  • the two pole piece cases 70 may be respectively disposed on both sides of the opposite surfaces of the diaphragm 40, thereby avoiding micro The occurrence of a short circuit.
  • the positive electrode sheet 50 and the negative electrode sheet 60 can be sucked by a rotatable robot 80 and transferred to the surface of the separator 40.
  • the rotatable robot 80 may include a plurality of suction cups 81 for sucking the positive electrode sheets 50 and the negative electrode sheets 60 and transferring them to the surface of the separator 40.
  • the plurality of suction cups 81 can be distributed in a triangular shape, so that the surfaces of the positive electrode sheets 50 and the negative electrode sheets 60 can be sucked more firmly.
  • a dust removing device 90 for dusting the positive electrode sheet 50 and the negative electrode sheet 60 and removing static electricity between the positive electrode sheet 50 and the negative electrode sheet 60 and the separator 40 may be included.
  • the dust removing device 90 employs a vertical blowing, that is, the direction of the airflow is parallel to the surface of the diaphragm 40 and perpendicular to the horizontal plane, thereby greatly improving the effect of dust removal.
  • the dust removing device 90 can be disposed between the lamination mechanism 20 and the take-up mechanism 30 to effectively remove dust.
  • the dust removing device 90 is an ion blowing device.
  • the automatic film positioning is set, the diaphragm and the pole piece are positioned, the lamination table is positioned, and the multi-pole piece is in the Z-shaped compression lamination mode.
  • the die-cut pole pieces positive film and negative electrode piece
  • the pole piece is sucked by the rotatable robot through the suction cup, and the pole piece is rotated to the position of the laminated film.
  • the pole piece can be transported simultaneously by three or more rotatable robots, and the positive and negative poles are dislocated in position, which can be set according to the process data in turn, and the position of the positioning platform is passed when the pole piece is in contact with the diaphragm, and the positive and negative plates pass through Aspect positioning.
  • the diaphragm engages the diaphragm and the pole piece through the double-sided clip to prevent the diaphragm laminate from slipping due to the gravity received by the pole piece.
  • a double-sided clip that is connected to the automatic electrical setting run program can be used to perform a zigzag curved moving lamination.
  • the first pressure claw and the second pressure claw are arranged to move the pressure plate on both sides, and the laminated pole piece and the diaphragm are pressed into the film.
  • the ion blowing device performs a blowing treatment on the pole piece and the diaphragm to prevent static electricity and dust from adhering between the pole piece and the diaphragm, and the effect of dust removal can be improved by the action of gravity.
  • the lithium ion battery lamination device provided by the invention has the following beneficial effects: by changing the direction of the lamination, the diaphragm and the pole piece are laminated in a manner perpendicular to the horizontal plane, thereby effectively removing dust and effectively reducing the multi-electrode sheet.
  • the problem of overlap by adding a lamination positioning platform, a plurality of automatic vertical Z-fold folding sheets, and the pole piece feeding mode is changed to a vertical type, and the double-sided clips are recycled, so that the dust adsorbed on the surface of the pole piece is more likely to fall off.
  • the double-sided clip as the pole piece of the double-sided clip and the pole piece clamping surface with a smooth silicone setting, which can effectively prevent the pole piece surface from being uneven and cause the pole piece to be damaged, and the positioning is accurate;
  • the operation mode of the face clip presents a certain electrical program setting, the angle rotation device presents the path selection function, and the positive and negative double-sided clip movement modes are at opposite angles, and the loop lamination is performed to improve the utilization rate; the lamination precision and the lamination speed are obtained.
  • the micro-short circuit caused by dust is eliminated.
  • by providing a three-dimensional ion blowing device in the lamination region it is possible to effectively prevent static electricity and dust from adhering between the pole piece and the diaphragm, thereby improving the yield of the insulation leakage test process.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
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  • General Chemical & Material Sciences (AREA)
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Abstract

本发明提供一种锂离子电池叠片装置，包括一放膜机构，一叠片机构及一收片机构依次设置，所述放膜机构用于装载隔膜并释放隔膜，所述叠片机构用于将正极片与负极片与所述隔膜贴合，所述叠片机构用于将贴合后的正极片、负极片及隔膜堆叠叠片，形成锂离子电池，其中，所述隔膜以垂直于水平方向的方式依次从放膜机构释放、并且在叠片机构中叠片后在收片机构中进行叠片，所述叠片机构包括一双面夹，用以夹持所述正极片、负极片与隔膜，并将贴附于隔膜表面的正极片、负极片旋转后送入收片机构。

Description

锂离子电池叠片装置
相关申请
本发明申请要求2015年07月24日申请的，申请号为201510442394.0，名称为“锂离子电池叠片装置”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本发明涉及一种锂离子电池叠片装置，尤其涉及一种立式Z字形状叠片装置及叠片方法。
背景技术
锂电池正在向大功率发展，目前大功率的锂电池往往通过将正、负极片用隔膜隔离，隔膜与极片反复交叉重叠而制成，而每个电池需要几十甚至几百对极片叠成，工作量非常大。
锂离子电池叠片机一般是利用机械手左右运动时，在正极、负极两极片盒中吸取极片，在叠片台上交替放下极片，同时使隔离膜随吸盘架左右运动，反复折叠，实现电芯的叠片组装，最后形成完整的电芯；现有锂离子电池叠片方法一般采用三站式叠片方式，路径由取片、定位、叠片台移动完成叠片。
然而，现有技术中的锂离子电池叠片机存在着带片很严重的问题，导致后续叠片体里多片，并且正极、负极表面的粉尘不好去除造成相互污染，影响锂离子电池的性能。
发明内容
综上所述，确有必要提供一种减少多片、并且能够制备性能更高的锂离子电池的叠片装置。
一种锂离子电池叠片装置，包括一放膜机构，一叠片机构及一收片机构依次设置，所述放膜机构用于装载隔膜并释放隔膜，所述叠片机构用于将正极片与负极片与所述隔膜贴合，所述叠片机构用于将贴合后的正极片、负极片及隔膜堆叠叠片，形成锂离子电池，其中，所述隔膜以垂直于水平方向的方式依次从放膜机构释放、并且在叠片机构中叠片后在收片机构中进行叠片，所述叠片机构包括一双面夹，用以夹持所述正极片、负极片与隔膜，并将贴附于隔膜表面的正极片、负极片旋转后送入收片机构。
与现有技术相比较，本发明提供的锂离子电池叠片装置，通过改变叠片的方向，隔膜与极片以垂直于水平面的方式进行叠片，从而可以有效的去除粉尘，并且有效减少多电极片重叠的问题；通过增加叠片定位平台，多片自动立式Z字弯折叠片，且极片送料方式更改为立式，双面夹循环使用，使得吸附在极片表面的粉尘更容易脱落，提高了工作效率和产品的合 格率。
说明书附图
图1为本发明提供的锂离子电池叠片装置的结构示意图。
图2为图1所述的锂离子电池叠片装置中双面夹的结构示意图。
图3为图1所述的锂离子电池叠片装置中收片机构的结构示意图。
图4为图1所述的锂离子电池叠片装置中极片盒的结构示意图。
图5为可旋转机械手的结构示意图。
图6为本发明提供的锂离子电池叠片装置进行叠片的示意图。
主要元件符号说明
锂离子电池叠片装置           100
放膜机构                     10
叠片机构                     20
收片机构                     30
隔膜                         40
正极片                       50
负极片                       60
极片盒                       70
可旋转机械手                 80
除尘装置                     90
隔膜辊                       101
过辊                         102
叠片定位平台                 201
双面夹                       202
叠片台                       303
第一压爪                     304
第二压爪                     306
极耳通道                     71
吸盘                         81
触突                         2021
具体实施方式
以下将结合附图详细说明本发明提供的锂离子电池叠片装置。
请一并参阅图1，本发明提供的锂离子电池叠片装置100包括一放膜机构10、一叠片机构20及一收片机构30。所述放膜机构10用于装载隔膜40并释放隔膜40，所述叠片机构20用于将正极片50与负极片60交替与所述隔膜40贴合；所述收片机构30用于将贴合有正极片50及负极片60的隔膜40进行弯折、堆叠叠片，形成锂离子电池。所述放膜机构10、叠片机构20及收片机构30可沿所述隔膜40的传输方向依次设置，形成作业流水线。
所述放膜机构10用于装载隔膜40，并且连续的释放隔膜40。所述放膜机构10包括一隔膜辊101及至少一过辊102。所述隔膜40卷绕于所述隔膜辊101上，并且通过过辊102传送。所述隔膜40的平面与水平面形成一夹角，进一步，所述过辊102均垂直于水平面，所述隔膜40贴附并绕过所述过辊102，所述隔膜40的平面垂直于水平面，并且在整个叠膜的过程中保持垂直于水平面的状态。本实施例中，所述放膜机构10包括四个过辊102平行设置，且与所述隔膜辊101平行，所述多个过辊102可呈“之”字形排列，所述隔膜40依次绕过所述多个过辊102，以减小张力并连续稳定的传送隔膜40。
所述叠片机构20与所述放膜机构10间隔设置，用于对隔膜40进行定位，以使正极片50或负极片60能够准确的贴附于隔膜40表面，防止正极片50或负极片60与所述隔膜40在贴附过程中出现偏移。所述叠片机构20包括一叠片定位平台201。所述叠片定位平台201可包括多个定位传感器(图未示)，用于所述隔膜40与正极片50及负极片60的定位。所述叠片定位平台201可上下移动，且所述叠片定位平台201的移动精度在10μm-100μm，以使所述正极片50及负极片60精确定位。
进一步，请一并参阅图2，所述叠片机构20包括多个双面夹202，用于夹持所述正极片50与所述隔膜40，以及负极片60与所述隔膜40，以固定所述正极片50或负极片60与所述隔膜40之间的相对位置。所述双面夹202可在一机械结构如滑轨的驱动之下，沿所述隔膜40的传输方向移动，从而带动所述隔膜40及所述正极片50或负极片60移动，并且防止正极片50及负极片60由于极片所受的重力而导致从隔膜40表面的叠片位置脱落。
所述双面夹202具有相对且可开合的两个片状结构，以利于夹持所述正极片50及所述负极片60。将所述正极片50及所述负极片60具有极耳一侧边的长度定义为所述正极片50及负极片60的宽度；将所述双面夹202能够夹持所述隔膜40的最大长度，即沿所述隔膜40传送方向上所述双面夹202能夹持的宽度，定义为所述双面夹202的宽度，则所述双面夹202的宽度可大于等于所述正极片50及负极片60的宽度，从而能够更加牢固的固定所述正极片50及负极片60，防止极片与隔膜40出现错位。
具体的，所述双面夹202相对的两个内表面具有多个触突2021，用于与所述正极片50，负极片60与隔膜40接触，并带着正极片50、负极片60旋转后送入收片机构。所述触突2021可沿所述双面夹202的宽度方向均匀排列，具体的，所述触突2021采用柔性材料，如特质胶面，从而可以牢牢的固定电池极片。进一步，所述触突2021与所述极片及隔膜40接触的表面可具有多个微孔结构，从而能够更加牢固的吸附所述电池极片及隔膜40。本实施例中，所述触突2021的材料为光滑硅胶。
请一并参见图3，所述收片机构30设置于所述隔膜40的传输方向上，且与所述叠片机构20间隔设置。可包括一叠片台303及一第一压爪304及第二压爪306，所述叠片台303具 有一叠片平面，以承载叠片之后的正极片50、负极片60及隔膜40。所述叠片台303的叠片平面为一竖直面，且该叠片平面垂直于所述隔膜40表面。
所述第一压爪304及第二压爪306相对且间隔设置于所述叠片平面的两侧，以对贴附在隔膜40表面的正极片50、负极片60依次交替收料，并压入叠片台303的叠片平面。所述第一压爪304及第二压爪306可在气缸及螺杆的作用之下相对靠近移动或远离，所述第一压爪304及第二压爪306间隔的距离可根据所述正极片50及负极片60的宽度进行选择，只要保证所述第一压爪304及第二压爪306能够抓取正极片50及负极片60收入所述叠片台303即可。所述第一压爪304可用于压紧正极片50，所述第二压爪306可用于压紧所述负极片60。
进一步，由于贴附有正极片50及负极片60的隔膜40在靠近所述叠片平面时依次交替折叠，因此所述第一压爪304及第二压爪306对称设置于靠近所述隔膜40被折叠的两侧边的叠片平面的两侧，用于压紧所述隔膜40被折叠的侧边。
请一并参阅图4及图5，所述正极片50及负极片60在叠片之前可分别承载于一极片盒70中，所述极片盒70具有一极耳通道71，以容纳所述正极片50及负极片60的极耳，并且使得极耳可沿极耳通道71滑动。承载正极片50的极片盒70可与承载负极片60的极片盒70间隔设置，进一步，两个极片盒70可分别设置于所述隔膜40两个相对表面的两侧，从而避免微短路的发生。所述正极片50及负极片60可通过一可旋转机械手80吸取，并传送至隔膜40表面。所述可旋转机械手80可包括多个吸盘81，用于吸取所述正极片50及负极片60，并将其传送至隔膜40表面。所述多个吸盘81可呈三角形分布，从而能够更加牢固的吸取所述正极片50及负极片60的表面。
进一步，可包括一除尘装置90，用于对所述正极片50及负极片60除尘，并且去除正极片50及负极片60与隔膜40之间的静电。所述除尘装置90采用立式吹风，即气流的方向平行于所述隔膜40的表面且垂直于水平面，从而极大的改善粉尘去除的效果。所述除尘装置90可设置于所述叠片机构20与收片机构30之间，以有效的去除粉尘。本实施例中，所述除尘装置90为一离子吹风装置。
请一并参阅图6，所述锂离子电池叠片装置100在叠片时，设置自动取片定位，隔膜与极片定位，叠片台定位，多极片呈现Z字压缩式叠片方式。当模切好的极片(正极片及负极片)装入放置极片的极片盒中，由可旋转机械手通过吸盘吸取极片，旋转运送极片至叠片隔膜位置。可通过三个或多个可旋转机械手同时运送极片，正负极片位置错位设置，可依次根据工艺数据进行设置，在极片与隔膜接触时通过定位平台的位置，正负极片通过多方面定位。隔膜通过双面夹进行隔膜与极片的咬接，防止由于极片所受的重力而导致滑落隔膜叠片位置。随着叠片进行，连接着自动电气设置运行程序的双面夹，可以进行Z字形弯曲移动叠片。接近叠片台时，由设置的第一压爪及第二压爪进行两侧移动压盘，将叠片后的极片与隔膜压入 叠片台。进一步，离子吹风装置对极片及隔膜进行吹风处理，防止静电以及粉尘的附着在极片与隔膜之间，由于重力的作用能够提高除尘的效果。
本发明提供的锂离子电池叠片装置，具有以下有益效果：通过改变叠片的方向，隔膜与极片以垂直于水平面的方式进行叠片，从而可以有效的去除粉尘，并且有效减少多电极片重叠的问题；通过增加叠片定位平台，多片自动立式Z字弯折叠片，且极片送料方式更改为立式，双面夹循环使用，使得吸附在极片表面的粉尘更容易脱落，提高了工作效率和产品的合格率；设置双面夹为极片的双面夹与极片夹接面采用光滑硅胶设置，可以有效防止极片表面不均匀造成极片的损伤，定位精准；双面夹的运行方式呈现一定电气程序设置，角度旋转装置呈现路径选择功能，正负极双面夹运动方式呈相反的角度，进行循环叠片，提高了利用率；叠片精度与叠片速度得到大大的提高，且在一定程度上杜绝了粉尘造成的微短路。另外，通过在叠片区域设置立体式离子吹风装置，能够有效防止静电以及粉尘的附着在极片与隔膜之间，提高了绝缘漏电测试过程的良品率。
另外，本领域技术人员还可在本发明精神内作其它变化，当然这些依据本发明精神所作的变化，都应包含在本发明所要求保护的范围内。

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  1. 一种锂离子电池叠片装置，包括一放膜机构，一叠片机构及一收片机构依次设置，所述放膜机构用于装载隔膜并释放隔膜，所述叠片机构用于将正极片与负极片与所述隔膜贴合，所述叠片机构用于将贴合后的正极片、负极片及隔膜堆叠叠片，形成锂离子电池，其特征在于，所述隔膜以垂直于水平方向的方式依次从放膜机构释放、并且在叠片机构中叠片后在收片机构中进行叠片，所述叠片机构包括一双面夹，用以夹持所述正极片、负极片与隔膜，并将贴附于隔膜表面的正极片、负极片旋转后送入收片机构。
  2. 如权利要求1所述的锂离子电池叠片装置，其特征在于，所述放膜机构包括一隔膜辊及多个过辊，所述多个过辊呈“之”字形排列，所述隔膜卷绕于所述隔膜辊上，并且通过多个过辊传送，所述隔膜辊及过辊均垂直于水平面。
  3. 如权利要求1所述的锂离子电池叠片装置，其特征在于，所述叠片机构包括一叠片定位平台，用于所述隔膜与正极片及负极片定位，所述叠片定位平台可移动的设置，所述叠片定位平台的移动精度为10μm-100μm。
  4. 如权利要求1所述的锂离子电池叠片装置，其特征在于，所述双面夹具有相对且可开合的两个片状结构，且所述双面夹的宽度大于等于所述正极片及负极片的宽度。
  5. 如权利要求4所述的锂离子电池叠片装置，其特征在于，所述双面夹中两个片状结构相对的内表面具有多个触突，所述触突采用柔性材料，并且所述触突与所述正极片及负极片接触的表面具有多个微孔结构。
  6. 如权利要求1所述的锂离子电池叠片装置，其特征在于，所述叠片机构包括一叠片台、一第一压爪及一第二压爪，所述叠片台具有一垂直于水平面的叠片平面，所述第一压爪及第二压爪相对且间隔设置于所述叠片平面的两侧。
  7. 如权利要求1所述的锂离子电池叠片装置，其特征在于，所述双面夹对贴附有正极片及负极片的隔膜在所述叠片平面位置处进行旋转，并将贴附有正极片、负极片的隔膜依次交替折叠。
  8. 如权利要求1所述的锂离子电池叠片装置，其特征在于，所述正极片及负极片在叠片之前分别承载于两个极片盒中，并分别通过一可旋转机械手吸取，并传送至隔膜的表面，所述可旋转机械手包括多个吸盘，以吸取正极片及负极片。
  9. 如权利要求1所述的锂离子电池叠片装置，其特征在于，进一步包括一除尘装置设置于所述叠片机构与收片机构之间，对贴附有正极片及负极片的隔膜进行除尘及除静电。
  10. 如权利要求9所述的锂离子电池叠片装置，其特征在于，所述除尘装置为一离子吹风装置，并且采用立式吹风。
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