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CN212113908U - A lamination device for improving the folds of lithium-ion battery separators - Google Patents

A lamination device for improving the folds of lithium-ion battery separators Download PDF

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CN212113908U
CN212113908U CN202020655547.6U CN202020655547U CN212113908U CN 212113908 U CN212113908 U CN 212113908U CN 202020655547 U CN202020655547 U CN 202020655547U CN 212113908 U CN212113908 U CN 212113908U
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diaphragm
lamination
electrode sheet
lamination table
feeding device
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黄东
郭春泰
何伟
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Tianjin EV Energies Co Ltd
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Tianjin EV Energies Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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Abstract

本实用新型涉及一种改善锂离子电池隔膜褶皱的叠片装置,包括机体,所述机体上设置有叠片台、正极片供料装置、负极片供料装置、隔膜放卷机构、辊轮组及隔膜送料机构,所述隔膜送料机构做左右往复运动将隔膜铺张在叠片台上;所述正极片供料装置用以将正极片运送到叠片台上,负极片供料装置用以将负极片运送到叠片台上;所述机体上还设置有可在左侧及右侧切断隔膜的隔膜切断装置,所述隔膜切断装置采用热切断的方式对铺张在叠片台上的每层隔膜进行切断。本实用新型提供一种改善锂离子电池隔膜褶皱的叠片装置,可以改善锂离子电池叠片过程中的隔膜褶皱问题,提升电芯质量。

Figure 202020655547

The utility model relates to a lamination device for improving the folds of a diaphragm of a lithium ion battery, which comprises a body. The body is provided with a lamination table, a positive electrode sheet feeding device, a negative electrode sheet feeding device, a diaphragm unwinding mechanism and a roller set. And the diaphragm feeding mechanism, the diaphragm feeding mechanism reciprocates left and right to spread the diaphragm on the lamination table; the positive electrode sheet feeding device is used to transport the positive electrode sheet to the lamination table, and the negative electrode sheet feeding device is used to The negative electrode sheet is transported to the lamination table; the body is also provided with a diaphragm cutting device that can cut the diaphragm on the left and right sides, and the diaphragm cutting device adopts thermal cutting to cut each layer laid out on the lamination table The diaphragm is cut off. The utility model provides a lamination device for improving the folds of the diaphragm of a lithium ion battery, which can improve the problem of folds of the diaphragm during the lamination process of the lithium ion battery and improve the quality of the electric core.

Figure 202020655547

Description

一种改善锂离子电池隔膜褶皱的叠片装置A lamination device for improving the folds of lithium-ion battery separators

技术领域technical field

本实用新型涉及锂电池制造设备技术领域,尤其涉及一种改善锂离子电池隔膜褶皱的叠片装置。The utility model relates to the technical field of lithium battery manufacturing equipment, in particular to a lamination device for improving the folds of a lithium ion battery diaphragm.

背景技术Background technique

锂离子软包电池具有安全性能好、重量轻、容量高、能量密度大、设计灵活等特点。锂离子软包动力电池凭借能量密度大和安全性高的优势,在新能源汽车上的使用得到迅速的推广,软包动力电池市场占有率持续升高。Lithium-ion soft pack batteries have the characteristics of good safety performance, light weight, high capacity, high energy density, and flexible design. Relying on the advantages of high energy density and high safety, the use of lithium-ion pouch power batteries in new energy vehicles has been rapidly promoted, and the market share of pouch power batteries has continued to increase.

锂离子动力电池容量大,在生产工艺上大多采取叠片方式进行生产,即正负极极片通过定位纠偏后,移送到叠片台,放在已压住的隔膜上,然后通过叠片台移动到另一端,自然将隔膜牵拉覆盖到极片上面,使隔膜形成Z字形移动,通过分别放入正负极片,反复运动,使芯包达到要求的层数后,切断隔膜得到需要的产品。在使用传统的叠片生产工艺时,叠片机主要依靠浮动辊的自重进行隔膜张力的控制,这种控制方法无法保证隔膜的张力持续恒定,隔膜张力的控制速度一旦跟不上叠片的速度时,就会造成叠入芯包的隔膜不平整,发生隔膜褶皱情况,影响电芯质量。Lithium-ion power batteries have large capacity, and are mostly produced by lamination in the production process. That is, after the positive and negative pole pieces are corrected by positioning, they are transferred to the lamination table, placed on the pressed diaphragm, and then passed through the lamination table. Move to the other end, and naturally pull the diaphragm to cover the pole piece, so that the diaphragm moves in a zigzag shape. By placing the positive and negative plates respectively, and moving repeatedly, after the core pack reaches the required number of layers, cut off the diaphragm to obtain the required number of layers. product. When using the traditional lamination production process, the lamination machine mainly relies on the weight of the floating roller to control the tension of the diaphragm. This control method cannot ensure that the tension of the diaphragm continues to be constant. Once the control speed of the diaphragm tension cannot keep up with the speed of the lamination , it will cause the diaphragm stacked into the core package to be uneven, the diaphragm will be wrinkled, and the quality of the battery will be affected.

目前公司生产一种长度较长(大于400mm)的电芯,由于这种型号的锂离子电池长度较长,隔膜较宽,在叠片工序生产时,现有设备在叠片过程中不能够有效控制隔膜张力和平整度,导致隔膜在叠片过程中极易发生褶皱,后期生产不能够消除隔膜褶皱,影响了电芯的质量。At present, the company produces a battery cell with a long length (greater than 400mm). Due to the long length of this type of lithium-ion battery and the wide diaphragm, the existing equipment cannot be effective in the lamination process during the production of the lamination process. Controlling the tension and flatness of the diaphragm makes it easy for the diaphragm to wrinkle during the lamination process, and the later production cannot eliminate the wrinkle of the diaphragm, which affects the quality of the cell.

实用新型内容Utility model content

为了解决现有技术的不足,本实用新型提供一种改善锂离子电池隔膜褶皱的叠片装置,改善在叠片工序生产时产生的褶皱,提高电芯质量。为达到上述目的,本实用新型的技术方案是这样实现的:In order to solve the deficiencies of the prior art, the utility model provides a lamination device for improving the folds of the lithium ion battery diaphragm, so as to improve the folds produced during the lamination process and improve the quality of the battery cells. In order to achieve the above object, the technical scheme of the present utility model is achieved in this way:

一种改善锂离子电池隔膜褶皱的叠片装置,包括机体,所述机体上设置有叠片台、正极片供料装置、负极片供料装置、隔膜放卷机构及辊轮组;所述隔膜放卷机构及辊轮组设置在机体上端,所述隔膜放卷机构上放置有卷装的隔膜,卷装的隔膜经隔膜放卷机构放卷,然后经辊轮组释放张力;所述叠片台固定在机体下端;所述机体上位于叠片及辊轮组之间的位置设置有隔膜送料机构,所述隔膜送料机构做左右往复运动将隔膜铺张在叠片台上;所述正极片供料装置及负极片供料装置分别设置在叠片台的左斜上方及右斜上方,所述正极片供料装置及负极片供料装置均做上下、左右往复运动且可运动至叠片台正上方;所述机体上还设置有可在叠片台左侧及右侧切断隔膜的隔膜切断装置,所述隔膜切断装置采用热切断的方式对铺张在叠片台上的每层隔膜进行切断。A lamination device for improving the folds of a lithium ion battery diaphragm, comprising a body on which a lamination table, a positive electrode sheet feeding device, a negative electrode sheet feeding device, a diaphragm unwinding mechanism and a roller set are arranged; the diaphragm The unwinding mechanism and the roller group are arranged on the upper end of the body, the diaphragm unwinding mechanism is placed with a rolled diaphragm, the rolled diaphragm is unrolled by the diaphragm unwinding mechanism, and then the tension is released through the roller group; The table is fixed at the lower end of the machine body; the position between the laminations and the roller group is provided with a diaphragm feeding mechanism, and the diaphragm feeding mechanism performs left and right reciprocating motion to spread the diaphragm on the lamination table; The feeding device and the negative electrode feeding device are respectively arranged on the upper left and the upper right of the lamination table. Directly above; the body is also provided with a diaphragm cutting device that can cut off the diaphragm on the left and right sides of the lamination table, and the diaphragm cutting device adopts the method of thermal cutting to cut off each layer of diaphragm laid out on the lamination table. .

进一步的,所述隔膜切断装置包括电阻丝、温控系统、滑轨、上下伺服及左右伺服,所述滑轨、上下伺服及左右伺服的数量均为两个,两个左右伺服分别设置在叠片台前端及后端的机体上,每个左右伺服的输出轴连接有一条水平设置的滑轨,两条滑轨上均设置有一个上下伺服,所述左右伺服控制滑轨上的上下伺服进行左右往复运动;两个上下伺服之间设置有电阻丝,所述电阻丝位于叠片台的上方,两个上下伺服共同控制电阻丝相对于叠片台做上下往复运动;所述温控系统与电阻丝相连并控制电阻丝的温度。Further, the diaphragm cutting device includes a resistance wire, a temperature control system, a slide rail, an upper and lower servo, and a left and right servo. On the body at the front and rear of the film table, the output shaft of each left and right servo is connected with a horizontally arranged slide rail, and an up and down servo is set on both slide rails, and the left and right servo controls the up and down servo on the slide rail to perform left and right Reciprocating movement; a resistance wire is arranged between the two upper and lower servos, the resistance wire is located above the lamination table, and the two upper and lower servos jointly control the resistance wire to reciprocate up and down relative to the lamination table; the temperature control system and the resistance wire The wire is connected and controls the temperature of the resistance wire.

进一步的,所述机体上还设置有CCD纠偏机构,所述CCD纠偏机构用于纠正正极片及负极片在所述叠片台放置位置的偏移。Further, the body is also provided with a CCD deviation rectification mechanism, and the CCD deviation rectification mechanism is used to correct the offset of the positive electrode sheet and the negative electrode sheet at the placement position of the lamination table.

进一步的,所述CCD纠偏机构包括CCD纠偏相机及控制器,所述CCD纠偏相机安装在叠片台正上方,所述CCD纠偏相机与控制器相连,控制器分别与正极片供料装置及负极片供料装置相连。Further, the CCD deviation correction mechanism includes a CCD deviation correction camera and a controller, the CCD deviation correction camera is installed directly above the lamination table, and the CCD deviation correction camera is connected with the controller, and the controller is respectively connected with the positive electrode sheet feeding device and the negative electrode. connected to the sheet feeding device.

进一步的,所述叠片台前端和后端分别活动设置有两个U夹,用以夹住隔膜、正极片或负极片。Further, two U clips are respectively movably arranged at the front and rear ends of the lamination stage, for clamping the diaphragm, the positive electrode sheet or the negative electrode sheet.

相对于现有技术,本实用新型所提供的一种改善锂离子电池隔膜褶皱的叠片装置具有以下优势:Compared with the prior art, the lamination device for improving the folds of the lithium ion battery diaphragm provided by the present invention has the following advantages:

1、设置有一套可在叠片台左侧及右侧切断隔膜的隔膜切断装置,实现叠片过程隔膜的单独裁切,可以改善隔膜褶皱以及叠片生产中各种由连续隔膜导致的问题,比如隔膜内部折叠,隔膜内部张力不均,错层及包裹不良等情况;1. A set of diaphragm cutting devices that can cut the diaphragm on the left and right sides of the lamination table is provided to realize the separate cutting of the diaphragm during the lamination process, which can improve the diaphragm wrinkles and various problems caused by the continuous diaphragm in the lamination production. For example, the internal folding of the diaphragm, the uneven internal tension of the diaphragm, the dislocation and poor wrapping, etc.;

2、隔膜切断装置采用热切断的方式对隔膜切断,与传统的切刀切断相比,切断效率更高,不会出现隔膜拉丝的情况。2. The diaphragm cutting device uses thermal cutting to cut the diaphragm. Compared with the traditional knife cutting, the cutting efficiency is higher, and the diaphragm wire drawing will not occur.

附图说明Description of drawings

构成本实用新型的一部分的附图用来提供对本实用新型的进一步理解,本实用新型的示意性实施例及其说明用于解释本实用新型,并不构成对本实用新型的不当限定。The accompanying drawings that constitute a part of the present invention are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention.

图1为本实用新型的整体结构正视图;Fig. 1 is the front view of the overall structure of the utility model;

图2为叠片台的俯视图;Figure 2 is a top view of the lamination table;

本文中提到的上下、左右、前后均以附图中指出的上下、左右、前后为准;The up and down, left and right, and front and back mentioned in this article are all based on the up and down, left and right, and front and back indicated in the accompanying drawings;

附图标记说明:1-机体;2-隔膜放卷机构;3-隔膜;4-辊轮组;5-隔膜送料机构;6-电阻丝;7-上下伺服;8-滑轨;9-左右伺服;10-U夹;11-叠片台;12-正极片供料装置;13-正极片;14-负极片供料装置;15-负极片。Description of reference numerals: 1-body; 2-diaphragm unwinding mechanism; 3-diaphragm; 4-roller group; 5-diaphragm feeding mechanism; 6-resistance wire; 7-up and down servo; 8-slide rail; 9-left and right Servo; 10-U clip; 11-stacking table; 12-positive electrode sheet feeding device; 13-positive electrode sheet; 14-negative electrode sheet feeding device; 15-negative electrode sheet.

具体实施方式Detailed ways

需要说明的是,在不冲突的情况下,本发明创造中的实施例及实施例中的特征可以相互组合。It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

在本发明创造的描述中,需要理解的是,术语“上”、“下”、“前”、“后”、“左”、“右”、“水平”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发明创造和简化描述,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发明创造的限制。此外,术语“第一”、“第二”、“第三”等仅用于描述目的,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”、“第三”等的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明创造的描述中,除非另有说明,“多个”的含义是两个或两个以上。In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc. is based on The orientation or positional relationship shown in the accompanying drawings is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood It is a limitation of the present invention. In addition, the terms "first", "second", "third", etc. 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", "second", "third", etc., may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

在本发明创造的描述中,需要说明的是,除非另有明确的规定和限定,术语“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;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。对于本领域的普通技术人员而言,可以通过具体情况理解上述术语在本发明创造中的具体含义。In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It can be connected in one piece; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

下面将参考附图并结合实施例来详细说明本发明创造。The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

一种改善锂离子电池隔膜褶皱的叠片装置,如图1至图2所示,包括机体1,所述机体1上设置有叠片台11、正极片供料装置12、负极片供料装置14、隔膜放卷机构2及辊轮组4;所述隔膜放卷机构2及辊轮组4设置在机体1上端,所述隔膜放卷机构2上放置有卷装的隔膜3,卷装的隔膜3经隔膜放卷机构2放卷,然后经辊轮组4释放张力;所述叠片台11固定在机体1下端;所述机体1上位于叠片台11及辊轮组4之间的位置设置有隔膜送料机构5,所述隔膜送料机构5连接有第一伺服,通过第一伺服提供动力源做左右往复运动,左右往复运动过程中将隔膜3一层一层铺张在叠片台11上;所述正极片供料装置12及负极片供料装置14分别设置在叠片台11的左斜上方及右斜上方,所述正极片供料装置12及负极片供料装置14分别连接有第二伺服及第三伺服,通过导轨和第二伺服、第三伺服的配合,正极片供料装置12及负极片供料装置14可做上下、左右往复运动且可运动至叠片台11正上方;所述叠片台11前端和后端分别活动设置有两个U夹10,当隔膜3、正极片13或负极片15铺张到叠片台11时,U夹10按照“出→上→入→下”的活动顺序压住隔膜3、正极片13或负极片15。A lamination device for improving the folds of the lithium ion battery diaphragm, as shown in Figures 1 to 2, includes a body 1, and the body 1 is provided with a lamination table 11, a positive electrode sheet feeding device 12, and a negative electrode sheet feeding device. 14. Diaphragm unwinding mechanism 2 and roller group 4; the diaphragm unwinding mechanism 2 and roller group 4 are arranged on the upper end of the body 1, and a rolled diaphragm 3 is placed on the diaphragm unwinding mechanism 2. The diaphragm 3 is unwound through the diaphragm unwinding mechanism 2, and then the tension is released through the roller group 4; the lamination table 11 is fixed on the lower end of the body 1; the body 1 is located between the lamination table 11 and the roller group 4. The diaphragm feeding mechanism 5 is arranged at the position, and the diaphragm feeding mechanism 5 is connected with a first servo, and the first servo provides a power source to perform left and right reciprocating motion. During the left and right reciprocating motion, the diaphragm 3 is stretched layer by layer on the lamination table 11 The positive electrode sheet feeding device 12 and the negative electrode sheet feeding device 14 are respectively arranged on the upper left and right diagonally above the lamination table 11, and the positive electrode sheet feeding device 12 and the negative electrode sheet feeding device 14 are respectively connected. There are a second servo and a third servo. Through the cooperation of the guide rail, the second servo and the third servo, the positive electrode sheet feeding device 12 and the negative electrode sheet feeding device 14 can reciprocate up and down, left and right, and can move to the lamination table 11 Right above; the front and rear ends of the lamination table 11 are respectively movably provided with two U clips 10. When the diaphragm 3, the positive electrode sheet 13 or the negative electrode sheet 15 is stretched out to the lamination table 11, the U clips 10 are arranged according to "out→up" Press the diaphragm 3, the positive electrode sheet 13 or the negative electrode sheet 15 in the sequence of →in →down".

所述机体1上还设置有可在叠片台11左侧及右侧切断隔膜3的隔膜切断装置,所述隔膜切断装置采用热切断的方式对铺张在叠片台11上的每层隔膜进行切断;所述隔膜切断装置包括电阻丝6、温控系统、滑轨8、上下伺服7及左右伺服9,所述滑轨8、上下伺服7及左右伺服9的数量均为两个,两个左右伺服9分别设置在叠片台11前端及后端的机体1上,每个左右伺服9的输出轴连接有一条水平设置的滑轨8,每条滑轨8上均设置有一个上下伺服7,所述滑轨8为丝杠,左右伺服9通过正转和反转控制滑轨9上的上下伺服7进行左右往复运动;两个上下伺服7之间设置有电阻丝6,所述电阻丝6位于叠片台11的上方,两个上下伺服7共同控制电阻丝6相对于叠片台11做上下往复运动;所述温控系统与电阻丝6相连并控制电阻丝6的温度。The body 1 is also provided with a diaphragm cutting device that can cut the diaphragm 3 on the left and right sides of the lamination table 11 . Cut off; the diaphragm cutting device includes a resistance wire 6, a temperature control system, a slide rail 8, an upper and lower servo 7 and a left and right servo 9, and the number of the slide rail 8, the upper and lower servos 7 and the left and right servos 9 is two, two The left and right servos 9 are respectively arranged on the body 1 at the front end and the rear end of the lamination table 11. The output shaft of each left and right servo 9 is connected with a horizontally arranged slide rail 8, and each slide rail 8 is provided with an upper and lower servo 7. The slide rail 8 is a lead screw, and the left and right servos 9 control the up and down servos 7 on the slide rail 9 to reciprocate left and right through forward and reverse rotation; a resistance wire 6 is arranged between the two upper and lower servos 7, and the resistance wire 6 Located above the lamination stage 11 , two upper and lower servos 7 jointly control the resistance wire 6 to reciprocate up and down relative to the lamination stage 11 ; the temperature control system is connected to the resistance wire 6 and controls the temperature of the resistance wire 6 .

所述机体1上还设置有CCD纠偏机构,所述CCD纠偏机构用于纠正正极片13及负极片15在所述叠片台11放置位置的偏移;CCD纠偏机构包括CCD纠偏相机及控制器,所述CCD纠偏相机安装在叠片台11正上方,所述CCD纠偏相机与控制器相连,控制器分别与正极片供料装置12及负极片供料装置14相连。The body 1 is also provided with a CCD deviation correction mechanism, which is used to correct the offset of the positive electrode sheet 13 and the negative electrode sheet 15 at the placement position of the lamination table 11; the CCD deviation correction mechanism includes a CCD deviation correction camera and a controller. , the CCD deviation correction camera is installed just above the lamination table 11, the CCD deviation correction camera is connected with the controller, and the controller is connected with the positive electrode sheet feeding device 12 and the negative electrode sheet feeding device 14 respectively.

使用时,隔膜送料机构5从右向左移,叠片台11右侧U夹10按“出→上→入→下”顺序运动,压住隔膜3右端,负极片供料装置14吸一片负极片15从右向左移动到叠片台11上方,后下移移动到隔膜3处轻微下压,两对U夹10“出→上→入→下”压在负极片15上,负极片供料装置14抬起并返回到取片位置;电阻丝6从右侧移动到叠片台11左侧,隔膜送料机构5从左侧移动到右侧,正极片供料装置12吸一片正极片13向右移动到叠片台11上方,后下移移动到隔膜3处轻微下压,U夹10活动压住正极片13,温控系统瞬间加热电阻丝6在叠片台11左侧将隔膜3切断,电阻丝6上移然后右移到叠片台11右侧而后下移,隔膜送料机构5向右移进行下一轮隔膜3铺张,负极片供料装置14重复上述操作在叠片台11上放置负极片15,U夹10压住隔膜3和极片,温控系统再次加热电阻丝6在叠片台11右侧将隔膜3切断,继续重复上述操作铺张隔膜3和正极片13,直至叠片数量达到产品要求;在上述过程中,CCD纠偏装置对正极片13及负极片15进行纠偏,确保产品质量。When in use, the diaphragm feeding mechanism 5 moves from right to left, and the U clip 10 on the right side of the lamination table 11 moves in the sequence of "out→up→in→down", pressing the right end of the diaphragm 3, and the negative electrode feeding device 14 sucks a negative electrode The sheet 15 moves from right to left to the top of the lamination table 11, and then moves down to the diaphragm 3 and presses down slightly. The feeding device 14 is lifted and returned to the position of taking the film; the resistance wire 6 moves from the right side to the left side of the lamination table 11, the diaphragm feeding mechanism 5 moves from the left side to the right side, and the positive electrode sheet feeding device 12 sucks a positive electrode sheet 13. Move to the right above the lamination table 11, and then move down to the diaphragm 3, press down slightly, the U clip 10 can press the positive plate 13, and the temperature control system instantly heats the resistance wire 6 on the left side of the lamination table 11. Cut off, the resistance wire 6 moves up and then moves right to the right side of the lamination table 11 and then moves down, the diaphragm feeding mechanism 5 moves to the right for the next round of spreading the diaphragm 3, and the negative electrode sheet feeding device 14 repeats the above operation on the lamination table 11 Place the negative electrode sheet 15 on the top, the U clip 10 presses the diaphragm 3 and the electrode sheet, the temperature control system heats the resistance wire 6 again and cuts the diaphragm 3 on the right side of the lamination table 11, and continues to repeat the above operation to stretch the diaphragm 3 and the positive electrode sheet 13 until The number of laminated sheets meets the product requirements; in the above process, the CCD deviation correction device rectifies the deviation of the positive electrode sheet 13 and the negative electrode sheet 15 to ensure product quality.

本实用新型设置有一套可在叠片台11左侧及右侧切断隔膜3的隔膜切断装置,实现叠片过程隔膜3的单独裁切,形成“一层隔膜3→一层负极片15→一层隔膜3→一层正极片1”的结构,可以改善隔膜3褶皱以及叠片生产中各种由Z形隔膜3导致的问题,比如隔膜3内部折叠,隔膜3内部张力不均,错层及包裹不良等情况;同时隔膜切断装置采用热切断的方式对隔膜3切断,与传统的切刀切断相比,切断效率更高,不会出现隔膜3拉丝的情况。The utility model is provided with a set of diaphragm cutting devices that can cut the diaphragm 3 on the left and right sides of the lamination table 11, so as to realize the separate cutting of the diaphragm 3 during the lamination process, and form "a layer of diaphragm 3 → a layer of negative electrode sheet 15 → a The structure of one layer of separator 3 → one layer of positive electrode sheet 1” can improve the wrinkles of the separator 3 and various problems caused by the Z-shaped separator 3 in the lamination production, such as the internal folding of the separator 3, the uneven internal tension of the separator 3, the split layer and At the same time, the diaphragm cutting device cuts the diaphragm 3 by means of thermal cutting. Compared with the traditional cutting knife, the cutting efficiency is higher, and the wire drawing of the diaphragm 3 will not occur.

以上所述仅为本发明创造的较佳实施例而已,并不用以限制本发明创造,凡在本发明创造的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明创造的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the scope of protection of the present invention.

Claims (5)

1.一种改善锂离子电池隔膜褶皱的叠片装置,包括机体(1),所述机体(1)上设置有叠片台(11)、正极片供料装置(12)、负极片供料装置(14)、隔膜放卷机构(2)及辊轮组(4);所述隔膜放卷机构(2)及辊轮组(4)设置在机体(1)上端,所述隔膜放卷机构(2)上放置有卷装的隔膜(3),卷装的隔膜(3)经隔膜放卷机构(2)放卷,然后经辊轮组(4)释放张力;所述叠片台(11)固定在机体(1)下端;其特征在于:所述机体(1)上位于叠片台(11)及辊轮组(4)之间的位置设置有隔膜送料机构(5),所述隔膜送料机构(5)做左右往复运动将隔膜(3)铺张在叠片台(11)上;所述正极片供料装置(12)及负极片供料装置(14)分别设置在叠片台(11)的左斜上方及右斜上方,所述正极片供料装置(12)及负极片供料装置(14)均做上下、左右往复运动且运动至叠片台(11)正上方;所述机体(1)上还设置有在叠片台(11)左侧及右侧切断隔膜(3)的隔膜切断装置,所述隔膜切断装置采用热切断的方式对铺张在叠片台(11)上的每层隔膜进行切断。1. A lamination device for improving the folds of a lithium ion battery diaphragm, comprising a body (1), and the body (1) is provided with a lamination table (11), a positive electrode sheet feeding device (12), and a negative electrode sheet feeding device A device (14), a diaphragm unwinding mechanism (2) and a roller group (4); the diaphragm unwinding mechanism (2) and the roller group (4) are arranged on the upper end of the body (1), and the diaphragm unwinding mechanism (2) A coiled diaphragm (3) is placed thereon, the coiled diaphragm (3) is unwound through the diaphragm unwinding mechanism (2), and then the tension is released through the roller set (4); the lamination table (11) ) is fixed on the lower end of the body (1); it is characterized in that: a diaphragm feeding mechanism (5) is arranged on the body (1) at a position between the lamination table (11) and the roller group (4), and the diaphragm The feeding mechanism (5) reciprocates left and right to spread the diaphragm (3) on the lamination table (11); the positive electrode sheet feeding device (12) and the negative electrode sheet feeding device (14) are respectively arranged on the lamination table (11). 11) on the left and right slopes, the positive electrode sheet feeding device (12) and the negative electrode sheet feeding device (14) both perform up and down, left and right reciprocating motions and move to just above the lamination table (11); The body (1) is also provided with a diaphragm cutting device for cutting the diaphragm (3) on the left and right sides of the lamination table (11), and the diaphragm cutting device adopts a thermal cutting method to lay out the diaphragm (11) on the lamination table (11). Cut off each layer of the diaphragm. 2.根据权利要求1所述的一种改善锂离子电池隔膜褶皱的叠片装置,其特征在于:所述隔膜切断装置包括电阻丝(6)、温控系统、滑轨(8)、上下伺服(7)及左右伺服(9),所述滑轨(8)、上下伺服(7)及左右伺服(9)的数量均为两个,两个左右伺服(9)分别设置在叠片台(11)前端及后端的机体(1)上,每个左右伺服(9)的输出轴连接有一条水平设置的滑轨(8),每条滑轨(8)上均设置有一个上下伺服(7),所述左右伺服(9)控制滑轨(8)上的上下伺服(7)进行左右往复运动;两个上下伺服(7)之间设置有电阻丝(6),所述电阻丝(6)位于叠片台(11)的上方,两个上下伺服(7)共同控制电阻丝(6)相对于叠片台(11)做上下往复运动;所述温控系统与电阻丝(6)相连并控制电阻丝(6)的温度。2. A lamination device for improving the folds of a lithium-ion battery diaphragm according to claim 1, wherein the diaphragm cutting device comprises a resistance wire (6), a temperature control system, a slide rail (8), an upper and lower servo (7) and left and right servos (9), the number of the slide rail (8), the upper and lower servos (7) and the left and right servos (9) is two, and the two left and right servos (9) are respectively arranged on the lamination table ( 11) On the front and rear body (1), the output shaft of each left and right servo (9) is connected with a horizontally arranged slide rail (8), and each slide rail (8) is provided with an upper and lower servo (7). ), the left and right servos (9) control the up and down servos (7) on the slide rail (8) to reciprocate left and right; a resistance wire (6) is provided between the two upper and lower servos (7), and the resistance wire (6) ) is located above the lamination table (11), and two upper and lower servos (7) jointly control the resistance wire (6) to reciprocate up and down relative to the lamination table (11); the temperature control system is connected to the resistance wire (6) And control the temperature of the resistance wire (6). 3.根据权利要求1所述的一种改善锂离子电池隔膜褶皱的叠片装置,其特征在于:所述机体(1)上还设置有CCD纠偏机构,所述CCD纠偏机构用于纠正正极片(13)及负极片(15)在所述叠片台(11)放置位置的偏移。3. A lamination device for improving the folds of the lithium ion battery diaphragm according to claim 1, characterized in that: the body (1) is also provided with a CCD deviation correction mechanism, and the CCD deviation correction mechanism is used to correct the positive plate (13) The offset of the placement position of the negative electrode sheet (15) on the lamination table (11). 4.根据权利要求3所述的一种改善锂离子电池隔膜褶皱的叠片装置,其特征在于:所述CCD纠偏机构包括CCD纠偏相机及控制器,所述CCD纠偏相机安装在叠片台(11)正上方,所述CCD纠偏相机与控制器相连,控制器分别与正极片供料装置(12)及负极片供料装置(14)相连。4. The lamination device according to claim 3, characterized in that: the CCD deviation correction mechanism comprises a CCD deviation correction camera and a controller, and the CCD deviation correction camera is installed on the lamination table ( 11) Right above, the CCD deviation correction camera is connected to the controller, and the controller is respectively connected to the positive electrode sheet feeding device (12) and the negative electrode sheet feeding device (14). 5.根据权利要求1所述的一种改善锂离子电池隔膜褶皱的叠片装置,其特征在于:所述叠片台(11)前端和后端分别活动设置有两个U夹(10),用以夹住隔膜(3)、正极片(13)或负极片(15)。5. A lamination device for improving the folds of a lithium-ion battery diaphragm according to claim 1, wherein two U clips (10) are movably provided at the front and rear ends of the lamination table (11), respectively, Used to clamp the separator (3), the positive electrode sheet (13) or the negative electrode sheet (15).
CN202020655547.6U 2020-04-26 2020-04-26 A lamination device for improving the folds of lithium-ion battery separators Active CN212113908U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113782839A (en) * 2021-11-11 2021-12-10 深圳市兴禾自动化股份有限公司 Online pole piece bag making and laminating process and bag making and laminating production line thereof
CN113889654A (en) * 2021-09-29 2022-01-04 无锡奥特维智能装备有限公司 Battery cell lamination equipment and method
CN117673427A (en) * 2022-08-26 2024-03-08 比亚迪股份有限公司 Cell preparation system, cell preparation method, laminated cell and battery
CN117712453A (en) * 2023-12-22 2024-03-15 三一技术装备有限公司 Lamination device and battery production line
CN118248965A (en) * 2024-05-28 2024-06-25 江西和润宇电源科技有限公司 Adjustable lead-acid storage battery lamination device and lamination method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113889654A (en) * 2021-09-29 2022-01-04 无锡奥特维智能装备有限公司 Battery cell lamination equipment and method
CN113782839A (en) * 2021-11-11 2021-12-10 深圳市兴禾自动化股份有限公司 Online pole piece bag making and laminating process and bag making and laminating production line thereof
CN117673427A (en) * 2022-08-26 2024-03-08 比亚迪股份有限公司 Cell preparation system, cell preparation method, laminated cell and battery
CN117673427B (en) * 2022-08-26 2025-01-14 比亚迪股份有限公司 Battery cell preparation system, battery cell preparation method, laminated battery cell and battery
CN117712453A (en) * 2023-12-22 2024-03-15 三一技术装备有限公司 Lamination device and battery production line
CN118248965A (en) * 2024-05-28 2024-06-25 江西和润宇电源科技有限公司 Adjustable lead-acid storage battery lamination device and lamination method thereof

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