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CN104493367B - Welding device and welding method for cylindrical battery pole plate - Google Patents

Welding device and welding method for cylindrical battery pole plate Download PDF

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Publication number
CN104493367B
CN104493367B CN201410642594.6A CN201410642594A CN104493367B CN 104493367 B CN104493367 B CN 104493367B CN 201410642594 A CN201410642594 A CN 201410642594A CN 104493367 B CN104493367 B CN 104493367B
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China
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positioning
plate
clamping
plates
clamping plates
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CN104493367A (en
Inventor
詹世英
杨凯
高飞
金翼
蔡惠群
徐德雷
魏银仓
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Zhuhai Yinlong New Energy Co ltd
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd
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Zhuhai Yinlong New Energy Co ltd
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
    • B23K37/04Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
    • B23K37/0426Fixtures for other work
    • B23K37/0435Clamps
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/531Electrode connections inside a battery casing
    • 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

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention discloses a welding device and a welding method for a cylindrical battery pole plate, wherein the welding device comprises: the two clamping plates are oppositely arranged at a preset interval, the surfaces, opposite to each other, of the two clamping plates are provided with positioning bulges matched with the central tube of the battery cell, and at least two positioning holes and a plurality of laser holes are formed in the two clamping plates; the positioning device comprises at least two positioning columns, at least two positioning columns and a clamping plate, wherein the at least two positioning columns are arranged between the two clamping plates, two ends of each positioning column are respectively inserted into positioning holes of the two clamping plates, and two ends of each positioning column are respectively provided with a screw hole; and the positioning nail penetrates through the positioning hole to be in threaded connection with the screw holes at the two ends of the positioning column, and the positioning column is fixedly connected with the two clamping plates. The welding device of the cylindrical battery pole plate can lead the positive pole plate, the negative pole plate and the end surface of the battery core to achieve the effect of tight connection, is not easy to have poor problems of insufficient solder and the like, and is suitable for being widely used in mass production; moreover, the structure is simple and the operation is easy.

Description

圆柱电池极板的焊接装置及焊接方法Welding device and welding method for cylindrical battery pole plate

技术领域technical field

本发明涉及电池的制造技术领域,特别是涉及一种圆柱电池极板的焊接装置及焊接方法。The invention relates to the technical field of battery manufacture, in particular to a welding device and a welding method for cylindrical battery pole plates.

背景技术Background technique

随着电动汽车、储能行业的大力发展,大容量的圆柱电池的研究受到广泛的关注。With the vigorous development of electric vehicles and energy storage industries, research on large-capacity cylindrical batteries has received extensive attention.

随着圆柱电池容量的增大,越来越多的研究针对全极耳结构的圆柱电池。全极耳结构的圆柱电池一般采用与电池端面结构一致的圆形盖板作为极板引出电流。极板与圆柱电池端面全覆盖,一般采用激光焊接方式实现紧密连接。由于端面上集流体是垂直于极板,直接将极板焊接该在电池端面,激光难以穿透极板并使极板与电池端面集流体实现电连接,容易出现虚焊,无法实现全极耳连接甚至断开连接,从而影响电池电化学性能。With the increase of the capacity of cylindrical batteries, more and more researches are aimed at cylindrical batteries with full-tab structure. Cylindrical batteries with a full-tab structure generally use a circular cover plate that is consistent with the structure of the end face of the battery as the pole plate to draw out the current. The polar plate and the end face of the cylindrical battery are fully covered, and laser welding is generally used to achieve tight connection. Since the current collector on the end face is perpendicular to the polar plate, if the polar plate is directly welded to the end face of the battery, it is difficult for the laser to penetrate the polar plate and make the electrical connection between the polar plate and the current collector on the end face of the battery. Connect or even disconnect, thus affecting the electrochemical performance of the battery.

发明内容Contents of the invention

针对上述现有技术现状,本发明所要解决的技术问题在于,提供一种有效提高电芯与极板的紧密性的圆柱电池极板焊接装置及其焊接方法。In view of the above-mentioned current state of the art, the technical problem to be solved by the present invention is to provide a cylindrical battery electrode plate welding device and a welding method thereof that can effectively improve the tightness between the battery cell and the electrode plate.

为了解决上述技术问题,本发明所提供的一种圆柱电池极板的焊接装置,包括:In order to solve the above technical problems, a welding device for cylindrical battery plates provided by the present invention includes:

两个夹板,两个所述夹板以预定间距相对设置,两个所述夹板相正对的表面上设置有与电芯中心管配合的定位凸起,并在两个所述夹板上设置有至少两个定位孔和若干激光孔;Two splints, the two splints are arranged opposite to each other at a predetermined distance, and the facing surfaces of the two splints are provided with positioning protrusions that cooperate with the center tube of the battery cell, and at least Two positioning holes and several laser holes;

至少两根定位柱,至少两根所述定位柱设置于两个所述夹板之间,且所述定位柱的两端分别插入两个所述夹板的所述定位孔内,在所述定位柱的两端均设置有螺钉孔;以及At least two positioning columns, at least two positioning columns are arranged between the two splints, and the two ends of the positioning columns are respectively inserted into the positioning holes of the two splints. screw holes are provided at both ends; and

定位钉,所述定位钉穿过所述定位孔与所述定位柱两端的螺钉孔螺纹连接,将所述定位柱与两个所述夹板固定连接。A positioning nail, the positioning nail passes through the positioning hole and is threadedly connected with the screw holes at both ends of the positioning column, and the positioning column is fixedly connected with the two splints.

在其中一个实施例中,所述夹板为圆形板。In one of the embodiments, the splint is a circular plate.

在其中一个实施例中,多个所述激光孔沿所述夹板的圆周方向间隔设置。In one of the embodiments, a plurality of the laser holes are arranged at intervals along the circumferential direction of the splint.

在其中一个实施例中,所述激光孔沿所述夹板的半径方向延伸。In one of the embodiments, the laser holes extend along the radial direction of the splint.

在其中一个实施例中,所述定位凸起为圆柱体形。In one of the embodiments, the positioning protrusion is cylindrical.

在其中一个实施例中,所述定位孔包括大孔段和小孔段,所述大孔段靠近所述定位柱侧,且所述大孔段的横截面积大于所述小孔段的横截面积。In one of the embodiments, the positioning hole includes a large hole section and a small hole section, the large hole section is close to the side of the positioning column, and the cross-sectional area of the large hole section is larger than that of the small hole section. cross-sectional area.

在其中一个实施例中,所述大孔段具有位于所述夹板外周面上的侧开口。In one of the embodiments, the large hole section has a side opening on the outer peripheral surface of the splint.

在其中一个实施例中,所述定位孔为两个,两个所述定位孔相对地设置于所述夹板的边缘上。In one embodiment, there are two positioning holes, and the two positioning holes are oppositely arranged on the edge of the splint.

在其中一个实施例中,两个所述夹板相正对的表面上设置有环形凹槽。In one embodiment, annular grooves are provided on the opposite surfaces of the two splints.

本发明所提供的一种上述的焊接装置焊接电芯与电池极板的焊接方法,其特征在于,所述电芯为已完成卷绕的全极耳电芯,所述方法包括:The present invention provides a welding method for welding a battery cell and a battery plate with the above-mentioned welding device, wherein the battery cell is a full-tab battery cell that has been wound, and the method includes:

(1)将至少两根所述定位柱的一端插入其中一个夹板的所述定位孔内,用定位钉穿过该其中一个夹板的定位孔后旋入所述定位柱的一端内,将所述定位柱的一端与所述其中一个夹板固定;(1) insert one end of at least two described positioning posts into the described positioning hole of one of the splints, screw the positioning nail into one end of the positioning post after passing through the positioning hole of one of the splints, and place the One end of the positioning column is fixed to one of the splints;

(2)将负极极板或者正极极板的中心孔和所述电芯中心管一端的中心孔依次对准并插入所述其中一个夹板的所述定位凸起;(2) Align the center hole of the negative electrode plate or the positive electrode plate with the center hole at one end of the cell center tube in sequence and insert the positioning protrusion of one of the splints;

(3)将正极极板或者负极极板的中心孔对准所述电芯中心管另一端的中心孔,将另一个夹板的定位凸起插入所述正极极板或者所述负极极板的中心孔和所述电芯中心管另一端的中心孔;(3) Align the center hole of the positive pole plate or the negative pole plate with the center hole at the other end of the cell center tube, and insert the positioning protrusion of the other splint into the center of the positive pole plate or the negative pole plate hole and the center hole at the other end of the cell center tube;

(4)将至少两根所述定位柱的另一端插入所述另一个夹板的所述定位孔,用定位钉穿过该另一个夹板的定位孔后旋入所述定位柱的另一端内,将所述定位柱的另一端与所述另一个夹板固定;(4) Insert the other ends of at least two of the positioning posts into the positioning holes of the other splint, screw the positioning nails into the other end of the positioning posts after passing through the positioning holes of the other splint, fixing the other end of the positioning post to the other splint;

(5)将所述定位钉锁紧,使所述电芯两端面与所述正极极板和所述负极极板紧贴;以及(5) locking the positioning nail so that the two ends of the battery cell are in close contact with the positive electrode plate and the negative electrode plate; and

(6)用激光穿过所述激光孔,打进所述正极极板或所述负极极板,使所述正极极板或所述负极极板与所述电芯端面紧密连接。(6) Use a laser to pass through the laser hole and drive into the positive electrode plate or the negative electrode plate, so that the positive electrode plate or the negative electrode plate is tightly connected to the end face of the battery cell.

本发明提供的圆柱电池极板的焊接装置及焊接方法,通过两个夹板、至少两根定位柱和定位钉使正极极板和负极极板与电芯端面紧贴,在夹板上设置定位凸起,便于夹板与电芯定位,在所述夹板上设置有激光孔,便于激光焊接时激光穿过打进正极极板或负极极板,使正极极板或负极极板与电芯端面紧密连接。该焊接装置能使极板与电芯达到紧密连接效果,不容易出现虚焊等不良问题,适于在量产中广泛使用;而且,结构简单,容易操作。The welding device and welding method of the cylindrical battery pole plate provided by the present invention make the positive pole plate and the negative pole plate close to the end face of the battery cell through two splints, at least two positioning columns and positioning nails, and a positioning protrusion is arranged on the splint , to facilitate the positioning of the splint and the cell, and a laser hole is set on the splint, which is convenient for the laser to pass through and penetrate into the positive or negative plate during laser welding, so that the positive or negative plate is closely connected with the end face of the cell. The welding device can achieve a tight connection effect between the pole plate and the battery core, is not prone to defective problems such as false welding, and is suitable for wide use in mass production; moreover, it has a simple structure and is easy to operate.

本发明附加技术特征所具有的有益效果将在本说明书具体实施方式部分进行说明。The beneficial effects of the additional technical features of the present invention will be described in the specific embodiments of this specification.

附图说明Description of drawings

图1为本发明实施例中的圆柱电池极板的焊接装置的立体结构示意图;Fig. 1 is a three-dimensional structural schematic diagram of a welding device for a cylindrical battery plate in an embodiment of the present invention;

图2为本发明实施例中的圆柱电池极板的焊接装置的夹板的正面视图;Fig. 2 is the front view of the splint of the welding device of the cylindrical battery pole plate in the embodiment of the present invention;

图3为本发明实施例中的圆柱电池极板的焊接装置的夹板的背面视图。Fig. 3 is a back view of the clamping plate of the welding device for the cylindrical battery pole plate in the embodiment of the present invention.

附图标记说明:10、夹板;11、定位孔;12、激光孔;13、定位凸起;16、环形凹槽;20、定位柱;30、定位钉。Explanation of reference signs: 10, splint; 11, positioning hole; 12, laser hole; 13, positioning protrusion; 16, annular groove; 20, positioning column; 30, positioning nail.

具体实施方式detailed description

下面参考附图并结合实施例对本发明进行详细说明。需要说明的是,在不冲突的情况下,以下各实施例及实施例中的特征可以相互组合。The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

图1为本发明实施例中的圆柱电池极板的焊接装置的立体结构示意图。如图1所示,本发明实施例中的圆柱电池极板的焊接装置包括两个夹板、两根定位柱20和定位钉30,其中,两个所述夹板10以预定间距相对设置,两个所述夹板10之间的间距根据电芯的长度和负极极板、正极极板的厚度确定;两根所述定位柱20设置于两个所述夹板10之间,并通过定位钉30与两个所述夹板10固定连接。FIG. 1 is a schematic perspective view of a welding device for a cylindrical battery plate in an embodiment of the present invention. As shown in Figure 1, the welding device of the cylindrical battery pole plate in the embodiment of the present invention comprises two splints, two positioning posts 20 and positioning nails 30, wherein, the two splints 10 are arranged opposite to each other at a predetermined distance, and the two splints The spacing between the splints 10 is determined according to the length of the cell and the thickness of the negative pole plate and the positive pole plate; the two positioning columns 20 are arranged between the two splints 10, and are connected to the two splints 10 by the positioning nails 30. The splints 10 are fixedly connected.

图2为本发明实施例中的圆柱电池极板的焊接装置的夹板的正面视图,图3为本发明实施例中的圆柱电池极板的焊接装置的夹板的视图。如图2、3所示,所述夹板10的形状为圆形(当然也可以为方形),两个夹板10相正对的表面的中心设置有圆柱形定位凸起13,定位凸起13与电芯中心管(图中未示出)配合,用于对夹板10定位。在定位凸起13的周围设置有若干供激光穿过的激光孔12。优选地,多个所述激光孔12沿所述夹板10的圆周方向间隔设置。进一步地,所述激光孔12沿所述夹板10的半径方向延伸。激光孔12采用此种结构,可以提高电芯与极板的紧密性。在所述夹板10的边缘设置有两个定位孔11,两根所述定位柱20的两端分别插入两个所述夹板10的定位孔11内。优选地,所述定位孔11包括大孔段11a和小孔段11b,所述大孔段11a靠近所述定位柱20侧,且所述大孔段11a的横截面积大于所述小孔段11b的横截面积。进一步地,所述大孔段11a具有位于所述夹板10外周面上的侧开口11c,以放入插入述定位柱20。优选地,所述夹板10的所述正面上设置有环形凹槽16,环形凹槽16用于避让正极极板、负极极板的折弯处,且凹槽还有固定、限制正极板、负极板位置的功能,使焊接更精确及牢固。Fig. 2 is a front view of the splint of the cylindrical battery pole plate welding device in the embodiment of the present invention, and Fig. 3 is a view of the splint of the cylindrical battery pole plate welding device in the embodiment of the present invention. As shown in Figures 2 and 3, the shape of the splint 10 is circular (certainly also can be a square), and the center of the opposite surface of the two splints 10 is provided with a cylindrical positioning protrusion 13, and the positioning protrusion 13 and The central tube of the battery cell (not shown in the figure) cooperates for positioning the splint 10 . A plurality of laser holes 12 for laser passing are arranged around the positioning protrusion 13 . Preferably, a plurality of the laser holes 12 are arranged at intervals along the circumferential direction of the splint 10 . Further, the laser hole 12 extends along the radial direction of the splint 10 . The laser hole 12 adopts such a structure, which can improve the tightness between the battery core and the pole plate. Two positioning holes 11 are provided on the edge of the splint 10 , and the two ends of the two positioning columns 20 are respectively inserted into the positioning holes 11 of the two splints 10 . Preferably, the positioning hole 11 includes a large hole section 11a and a small hole section 11b, the large hole section 11a is close to the side of the positioning column 20, and the cross-sectional area of the large hole section 11a is larger than the small hole section The cross-sectional area of 11b. Further, the large hole section 11a has a side opening 11c located on the outer peripheral surface of the splint 10 for insertion into the positioning post 20 . Preferably, the front side of the splint 10 is provided with an annular groove 16, the annular groove 16 is used to avoid the bending of the positive electrode plate and the negative electrode plate, and the groove also fixes and restricts the positive electrode plate and the negative electrode plate. The function of the plate position makes the welding more precise and firm.

本发明另一个实施例中,还提供了一种使用上述实施例中的焊接装置焊接电芯与电池极板的焊接方法,所述电芯为已完成卷绕的全极耳电芯,所述方法包括:In another embodiment of the present invention, there is also provided a welding method of using the welding device in the above embodiment to weld the battery cell and the battery plate, the battery cell is a full-tab battery cell that has been wound, and the Methods include:

步骤1将两根所述定位柱20的一端插入其中一个夹板10的所述定位孔11内,用定位钉30穿过该其中一个夹板10的定位孔11后旋入所述定位柱20的一端内,将所述定位柱20的一端与所述其中一个夹板10固定;Step 1 Insert one end of the two positioning posts 20 into the positioning hole 11 of one of the splints 10, and screw the positioning nail 30 into one end of the positioning post 20 after passing through the positioning hole 11 of one of the splints 10 Inside, fix one end of the positioning column 20 to one of the splints 10;

步骤2将负极极板或者正极极板的中心孔和所述电芯中心管一端的中心孔依次对准并插入所述其中一个夹板10的所述定位凸起13;Step 2: Align the center hole of the negative electrode plate or the positive electrode plate with the center hole at one end of the cell center tube in sequence and insert the positioning protrusion 13 of one of the splints 10;

步骤3将正极极板或者负极极板的中心孔对准所述电芯中心管另一端的中心孔,将另一个夹板10的定位凸起13插入所述正极极板或者所述负极极板的中心孔和所述电芯中心管另一端的中心孔;Step 3 Align the center hole of the positive pole plate or the negative pole plate with the center hole at the other end of the cell center tube, and insert the positioning protrusion 13 of the other splint 10 into the positive pole plate or the negative pole plate. a center hole and a center hole at the other end of the cell center tube;

步骤4将两根所述定位柱20的另一端插入所述另一个夹板10的所述定位孔11,用定位钉30穿过该另一个夹板10的定位孔11后旋入所述定位柱20的另一端内,将所述定位柱20的另一端与所述另一个夹板10固定;Step 4 Insert the other ends of the two positioning posts 20 into the positioning holes 11 of the other splint 10 , use the positioning nails 30 to pass through the positioning holes 11 of the other splint 10 and then screw into the positioning posts 20 In the other end of the positioning column 20, the other end of the positioning column 20 is fixed to the other splint 10;

步骤5将所述定位钉30锁紧,使所述电芯两端面与所述正极极板和所述负极极板紧贴;以及Step 5: locking the positioning nail 30 so that the two ends of the battery cell are in close contact with the positive electrode plate and the negative electrode plate; and

步骤6用激光穿过所述激光孔12,打进所述正极极板或所述负极极板,使所述正极极板或所述负极极板与所述电芯端面紧密连接。Step 6: Use a laser to pass through the laser hole 12, and drive into the positive electrode plate or the negative electrode plate, so that the positive electrode plate or the negative electrode plate is tightly connected to the end face of the battery cell.

综上,本发明提供的圆柱电池极板的焊接装置及焊接方法,通过两个夹板10、至少两根定位柱20和定位钉30使正极极板和负极极板与电芯端面紧密连接,在夹板上设置定位凸起,便于夹板与电芯定位,在所述夹板上设置有激光孔,便于激光焊接时按预定的途径扫描。该装置简单易行,容易操作,且能使极板与电芯达到紧密连接效果,不容易出现虚焊等不良效果,适于在量产中广泛使用。In summary, the welding device and welding method for cylindrical battery plates provided by the present invention use two splints 10, at least two positioning columns 20 and positioning nails 30 to closely connect the positive electrode plate and the negative electrode plate to the end face of the battery cell. Positioning protrusions are provided on the splint to facilitate the positioning of the splint and the cell, and laser holes are arranged on the splint to facilitate scanning according to a predetermined path during laser welding. The device is simple, easy to operate, and can achieve a close connection effect between the pole plate and the battery core, and is not prone to adverse effects such as false welding, and is suitable for wide use in mass production.

以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (1)

1. a kind of welding method of use welder welding electric core and battery pole plates, it is characterised in that the welder bag Include:
Two clamping plates (10), two clamping plates (10) are oppositely arranged with preset space length, what two clamping plates (10) faced The positioning convex (13) coordinated with battery core central tube is provided with surface, and at least two are provided with two clamping plates (10) The laser hole (12) that individual positioning hole (11) and some radial directions along the clamping plate (10) extend, and some laser holes (12) it is arranged at intervals along the circumferencial direction of the clamping plate (10), annular is provided with the surface that two clamping plates (10) face Groove (16);
At least two locating dowels (20), at least two locating dowels (20) are arranged between two clamping plates (10), and institute The two ends for stating locating dowel (20) are inserted in the positioning hole (11) of two clamping plates (10) respectively, in the locating dowel (20) Two ends be provided with screw hole;And
Locating pin (30), the locating pin (30) passes through the positioning hole (11) and the screw hole spiral shell at the locating dowel (20) two ends Line is connected, and the locating dowel (20) is fixedly connected with two clamping plates (10);
The battery core is the full lug battery core for having completed winding, and methods described includes:
(1) one end of at least two locating dowels (20) is inserted in one of in the positioning hole (11) of clamping plate (10), Screwed in afterwards in one end of the locating dowel (20) through the positioning hole (11) of one of clamping plate (10) with locating pin (30), will One end of the locating dowel (20) and one of clamping plate (10) are fixed;
(2) centre bore of the centre bore and described battery core central tube one end of negative plates or anode plate is aligned and inserted successively Enter the positioning convex (13) of one of clamping plate (10);
(3), will be another by the centre bore of the battery core central tube other end described in the central aperture of anode plate or negative plates The positioning convex (13) of individual clamping plate (10) is inserted in the centre bore and the battery core of the anode plate or the negative plates The centre bore of the heart pipe other end;
(4) will at least two locating dowels (20) other end insertion another clamping plate (10) the positioning hole (11) other end of the locating dowel (20), is screwed in afterwards through the positioning hole (11) of another clamping plate (10) with locating pin (30) It is interior, the other end of the locating dowel (20) and another described clamping plate (10) is fixed;
(5) locating pin (30) is locked, the battery core both ends of the surface is close to the anode plate and the negative plates; And
(6) laser hole (12) is passed through with laser, throws the anode plate or the negative plates into, make the anode plate Or the negative plates are closely connected with the battery core end face.
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