CN113210975A - Lithium battery module welding tool - Google Patents
Lithium battery module welding tool Download PDFInfo
- Publication number
- CN113210975A CN113210975A CN202110541758.6A CN202110541758A CN113210975A CN 113210975 A CN113210975 A CN 113210975A CN 202110541758 A CN202110541758 A CN 202110541758A CN 113210975 A CN113210975 A CN 113210975A
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- positioning
- conductive strip
- pressing
- pressing plate
- battery module
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 101
- 238000003466 welding Methods 0.000 title claims abstract description 61
- 238000003825 pressing Methods 0.000 claims abstract description 134
- 238000000034 method Methods 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 description 13
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to a lithium battery module welding tool which comprises a base plate, wherein a bottom positioning structure is arranged on the base plate; a top positioning plate is arranged above the base, and a top positioning groove matched with the shape of the top of the group of lithium batteries is arranged on the bottom surface of the top positioning plate; the top positioning plate is provided with a conductive bar placing groove which is communicated up and down, the top positioning plate is provided with a conductive bar positioning structure, and the conductive bar positioning structure is used for positioning the conductive bars so that the conductive bars and the poles of the grouped lithium batteries are arranged in a vertically opposite mode; the welding tool further comprises a conductive bar pressing plate assembly and a pressing structure, wherein the conductive bar pressing plate assembly comprises a conductive bar pressing block which is positioned at the bottom and used for pressing the conductive bar, a welding channel which corresponds to each pole column and the conductive bar positioning groove up and down in use is arranged on the conductive bar pressing plate assembly, and a laser or laser welding head penetrates through the welding channel; the pressing structure is used for pressing the conducting bar pressing plate component on the conducting bar.
Description
Technical Field
The invention relates to a lithium battery module welding tool.
Background
With the continuous development of science and technology, the application of the power battery in daily production and life is more and more extensive. In electrical power generating system, the lithium cell needs the series-parallel connection to carry out in groups, and the lithium cell is in groups the in-process and need carry out the series-parallel connection through busbar (copper bar) with single lithium cell, and the lithium cell group after will being in groups carries out the series-parallel connection and constitutes the system, realizes the group mode of system.
The lithium battery pole and the bus bar are connected in two modes, wherein one mode is bolt connection, and the other mode is welding. The bolt connection has simple operation, can be flexibly adjusted according to the module grouping mode, and is suitable for single-batch small-scale production. The welding has the operation complicacy, and the reliability is high, is applicable to the production of large batch design module.
The welding mode of utmost point post and busbar is used more extensively at present, and what is most important among the welding process ensures location and connection between battery utmost point post and the busbar, and how the contact between utmost point post and the busbar is not good, can puncture the busbar among the laser welding process, leads to the welding failure for all make a waste to the battery that the busbar corresponds.
Disclosure of Invention
The invention aims to provide a lithium battery module welding tool capable of accurately positioning a pole and a conductive bar.
In order to achieve the purpose, the technical scheme of the lithium battery module welding tool provided by the invention is as follows: the utility model provides a lithium battery module welding frock, includes:
the base plate is used for supporting and placing the grouped lithium batteries, and is provided with a bottom positioning structure which is used for horizontally positioning the bottoms of the grouped lithium batteries;
the top positioning plate is arranged above the base, a top positioning groove matched with the shape of the top of the group of lithium batteries is arranged on the bottom surface of the top positioning plate, the top positioning plate is matched and buckled on the top of the group of lithium batteries, and the top positioning groove is used for horizontally positioning the top of the group of lithium batteries;
the top positioning plate is provided with a conductive strip placing groove which is communicated up and down, the conductive strip placing groove corresponds to the poles of the grouped lithium batteries up and down when in use, and the top positioning plate is provided with a conductive strip positioning structure which is used for positioning a conductive strip so that the conductive strip is arranged opposite to the poles of the grouped lithium batteries up and down;
lithium battery module welding frock still includes:
the bus bar pressing plate assembly comprises a bus bar pressing block which is positioned at the bottom and used for pressing the bus bar, welding channels which correspond to the pole columns and the bus bar positioning grooves up and down in use are arranged on the bus bar pressing plate assembly, and laser or laser welding heads penetrate through the welding channels;
and the pressing structure is used for pressing the conducting bar pressing plate component on the conducting bar.
Has the advantages that: bottom location structure and top locating plate can fix a position lithium cell in groups, and the conducting bar location structure on the locating plate of top can fix a position the position of conducting bar, makes the conducting bar just right from top to bottom with the utmost point post of lithium cell in groups. And good contact between busbar and utmost point post can be guaranteed to busbar clamp plate subassembly, compact structure, prevents to appear virtual the condition on connecing or not contacting, and busbar and utmost point post can weld together accurately when guaranteeing follow-up laser welding.
Preferably, the bus bar placing groove is a bus bar positioning groove extending along the length direction of the grouped lithium batteries, the bus bar positioning structure comprises two groove walls of the bus bar positioning groove, and the two groove walls are used for being matched with two sides of the bus bar in the width direction in a blocking manner to position the bus bar in the width direction. Two cell walls through the conducting strip constant head tank come to fix a position conducting strip width direction, and the structure is simpler.
Preferably, the conductive strip positioning structure further comprises a conductive strip positioning piece, the conductive strip positioning piece is provided with a positioning hole for being matched and inserted with the protrusion extending up and down of the conductive strip, and the conductive strip positioning piece is fixed on the top positioning plate after being matched and inserted with the protrusion of the conductive strip;
the bus bar pressing block of the bus bar pressing plate component is provided with an avoidance area for avoiding bus bar positioning pieces. The conducting bar is positioned horizontally by utilizing the bulges on the conducting bar, and the positioning mode is simpler.
Preferably, the conductive strip pressing plate assembly comprises a pressing plate on which the conductive strip pressing plate is floatingly mounted in an up-down direction;
the bus bar pressing plate assembly further comprises an elastic piece arranged between the bus bar pressing block and the pressing plate, and the elastic piece is used for applying downward elastic force to the bus bar pressing block;
the welding channel comprises a channel pressing plate part arranged on the pressing plate and a channel pressing block part arranged on the conductive strip pressing block. The conducting bar pressing block is installed on the pressing plate in a floating mode, and the conducting bar can be prevented from being damaged due to overlarge pressure when the conducting bar pressing block is rigidly pressed on the conducting bar.
Preferably, the conductive strip pressing block is provided with at least two threaded holes, a screw or a bolt penetrates through the pressing plate in a guiding manner, and the screw or the bolt is screwed in the threaded holes, so that the conductive strip pressing block is assembled on the pressing plate in a vertically floating manner. Can guarantee through screw or bolt that the conducting bar briquetting keeps translation from top to bottom when using, guarantee that the conducting bar can correspond with utmost point post is accurate.
Preferably, the busbar pressing block comprises convex edges which are arranged in a downward protruding mode, the convex edges extend along the length direction of the grouped lithium batteries, two convex edges are arranged corresponding to the same busbar along the width direction, and the convex edges are used for pressing the busbars;
the channel pressing block part is arranged between the two convex edges. The bus bar pressing block comprises a convex edge, and even if the bus bar is embedded into the bus bar placing groove, the convex edge can also extend into the bus bar placing groove to be pressed tightly; and the convex edge is arranged in a protruding mode, the contact area of the convex edge and the conductive strip is small, and the generated local pressure is larger.
Preferably, an avoiding groove is formed in the convex edge and used for avoiding a non-hardened circular arc in the conductive strip.
Preferably, the conductive strip pressing blocks are multiple, and two adjacent conductive strip pressing blocks are arranged at intervals. The bus bar briquetting has a plurality ofly, can be according to the series-parallel connection relation of each lithium cell and reasonable piecemeal when using, can adopt metallic bus bar briquetting to compress tightly, prevents the short circuit phenomenon simultaneously. And each conducting strip briquetting compresses tightly the conducting strip separately, compares with a monoblock mode, is difficult to appear the condition of virtual joint or not contacting.
Preferably, the bottom positioning structure is a positioning strip arranged on the base plate, and the positioning strip surrounds to form a bottom positioning groove for positioning the bottoms of the grouped lithium batteries;
the positioning strips comprise width direction positioning strips for positioning the width direction of the grouped lithium batteries and length direction positioning strips for positioning the width direction and the length direction of the grouped lithium batteries;
at least one of the length direction positioning strips is a movable positioning strip movably arranged along the length direction. At least one is the activity location strip, can adapt to the battery pack of different length.
Preferably, the pressing structure includes a support located on the base plate and located outside the bottom positioning structure, a locking member is arranged on the support, a lock catch is correspondingly arranged on the conductive strip pressing plate assembly, and the locking member cooperates with the lock catch to press the conductive strip pressing plate assembly onto the conductive strip.
Drawings
Fig. 1 is a schematic view of a welding tool, a group of lithium batteries, and a conductive band in an embodiment 1 of a lithium battery module welding tool provided by the present invention;
fig. 2 is a schematic view showing the matching of a base, a bracket and a locking member in embodiment 1 of the welding tool for a lithium battery module provided by the invention;
FIG. 3 is a schematic view of the opposite side of the top positioning plate of FIG. 1;
FIG. 4 is a schematic view of the top positioning plate, conductive strap, and conductive strap securing member of FIG. 1 in a mated configuration;
FIG. 5 is an exploded view of the conductive band strap assembly of FIG. 1;
FIG. 6 is a schematic view of the structure of the conductive strip compact of FIG. 5 (the avoiding groove is not shown);
fig. 7 is a schematic view of a lithium battery module welding tool according to embodiment 1 of the present invention after a conductive tape is pressed against a group of lithium batteries;
description of reference numerals:
100. a positioning base; 101. a base plate; 102. a width direction positioning strip; 103. fixing a positioning strip in the length direction; 104. a movable positioning strip in the length direction; 105. a bottom positioning groove; 200. grouping lithium batteries; 300. a top positioning plate; 301. a conductive strip positioning groove; 302. a top positioning groove; 303. the groove wall of the top positioning groove; 400. a conductive strip; 401. a protrusion; 402. a non-hardened arc; 500. a conductive strip platen assembly; 501. pressing a plate; 502. conducting bar pressing blocks; 503. a bolt; 504. a spring; 505. an avoidance area; 506. an avoidance groove; 507. a channel platen portion; 508. a stepped hole; 509. a convex edge; 510. a channel block section; 601. a support; 602. a locking member; 603. locking; 701. a conductive strip positioning member; 702. and (7) positioning the holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
The specific embodiment 1 of the lithium battery module welding tool provided by the invention comprises:
as shown in fig. 1 to 7, a lithium battery module welding tool (hereinafter, referred to as a welding tool) is used to position the positions of the grouped lithium batteries 200 and the conductive strips 400, so as to ensure that the terminals of the grouped lithium batteries 200 are tightly attached to the conductive strips 400, thereby ensuring that the lithium batteries can be reliably fixed together after subsequent laser welding. Here, the grouped lithium battery 200 is formed by arranging a plurality of lithium batteries side by side, where it is defined that a direction in which the plurality of lithium batteries are arranged side by side is a length direction of the grouped lithium battery 200, and a direction perpendicular to the length direction is a width direction and an up-down direction, and the grouped lithium batteries 200 are placed up and down when welded.
The welding fixture comprises a positioning base 100, a top positioning plate 300 and a conductive strip pressing plate assembly 500, wherein the top positioning plate 300 and the conductive strip pressing plate assembly 500 are sequentially arranged above the positioning base 100 from bottom to top, and the welding fixture further comprises a pressing structure used for applying downward acting force to the conductive strip pressing plate assembly 500.
As shown in fig. 2, the positioning base 100 is used for placing the grouped lithium batteries 200 thereon and positioning the grouped lithium batteries 200, where the positioning base 100 includes a base plate 101, the base plate 101 is fixedly placed on a workbench when in use, two width direction positioning strips 102 are fixedly mounted on the base plate 101, and the two width direction positioning strips 102 extend along the length direction of the grouped lithium batteries 200 and are arranged at intervals along the width direction of the grouped lithium batteries 200. The two ends of the two width direction positioning strips 102 are respectively provided with a length direction fixed positioning strip 103 and a length direction movable positioning strip 104, the length direction fixed positioning strip 103 is fixedly installed on the base plate 101, and the length direction movable positioning strip 104 is adjustably installed on the two width direction positioning strips 102 along the length direction of the grouped lithium batteries 200 so as to be suitable for the lithium batteries with different quantities. Specifically, holes are formed in the length direction movable positioning strips 104, a row of holes are formed in the two width direction positioning strips 102, and the length direction movable positioning strips 104 are fixed at the holes in different positions on the two width direction positioning strips 102 through bolts or screws, so that position adjustment is realized. In addition, in order to realize fine adjustment of the position of the movable positioning strip 104 in the length direction, the hole on the movable positioning strip 104 in the length direction is a waist hole extending along the length direction of the lithium batteries 200. The two width direction positioning strips 102, the length direction fixed positioning strip 103 and the length direction movable positioning strip 104 together form a bottom positioning groove 105, and the bottom positioning groove 105 is used for positioning the bottom of the group of lithium batteries 200.
The top positioning plate 300 is constructed as shown in fig. 3 and 4, and the top positioning plate 300 functions to position the tops of the grouped lithium batteries 200 and to position the conductive bars 400. The top positioning plate 300 is a plate, and has a top positioning groove 302 formed on a bottom surface thereof, the top positioning groove 302 is buckled to the top of the group of lithium batteries 200 when in use, and each top positioning groove wall 303 of the top positioning groove 302 is in stop fit with the group of lithium batteries 200 to restrain and limit the position of the top of the group of lithium batteries 200.
Two conducting strip positioning grooves 301 extending left and right are further formed in the top positioning plate 300, and the two conducting strip positioning grooves 301 correspond to the positive pole and the negative pole of the lithium battery respectively. The conductive strip positioning slot 301 is used for positioning the conductive strip 400, but in order to satisfy the requirement of serial-parallel connection, the number of the conductive strips 400 is large, the conductive strip positioning slot 301 here can only position the width direction of the conductive strip 400, and the length direction needs to be positioned by the conductive strip positioning element 701. Specifically, the conductive strip 400 has a protrusion 401 extending upward, the conductive strip positioning element 701 has a positioning hole 702, the positioning hole 702 can be adapted to the protrusion 401 for insertion, and then two ends of the conductive strip positioning element 701 are fixed on the top positioning plate 300 by screws or bolts. It should be noted that, in the present embodiment, after the conductive strip 400 is placed in the conductive strip positioning groove 301, the top surface of the conductive strip 400 is located below the top surface of the top positioning plate 300.
The conductive strip pressing plate assembly 500 is constructed as shown in fig. 5 and 6, and the conductive strip pressing plate assembly 500 functions to press the conductive strip 400 against the poles of the lithium battery. The conductive strip pressing plate assembly 500 includes a pressing plate 501, and a plurality of conductive strip pressing blocks 502 are installed at the bottom of the pressing plate 501, and each conductive strip pressing block 502 is floatingly mounted below the pressing plate 501 along the up-down direction. Specifically, as shown in fig. 6, four stepped holes 508 are formed in each conductive strip pressing block 502, small holes of the stepped holes 508 are threaded holes, bolts 503 are all installed on the pressing plate 501 corresponding to the stepped holes 508, during assembly, the bolts 503 penetrate the small holes of the stepped holes 508, but are not screwed, so that the conductive strip pressing blocks 502 can float up and down, in order to drive the conductive strip pressing blocks 502 to move down, springs 504 are sleeved outside the bolts 503, the upper ends of the springs 504 are pressed against the bottom of the pressing plate 501, and the lower ends of the springs are pressed against the stepped holes 508. By arranging the spring 504, the conductive strip pressing block 502 is elastically pressed on the conductive strip 400, so that the conductive strip 400 is prevented from being easily crushed when rigidly pressed.
As shown in fig. 5, two conductive strip pressing blocks 502 in the same row are spaced apart from each other, an avoidance area 505 is formed at the spaced position, the avoidance area 505 corresponds to the conductive strip positioning element 701 up and down, and the conductive strip positioning element 701 is disposed in the avoidance area 505 when the conductive strip 400 is pressed downward, so that the conductive strip pressing blocks 502 can press the conductive strip 400. As shown in fig. 6, the conductive strip pressing block 502 includes a convex edge 509 at the bottom, two convex edges 509 extend along the length direction of the conductive strip 400, and the convex edges 509 are arranged in a protruding manner. Even after the conductive strip 400 is placed in the conductive strip positioning groove 301, the convex edge 509 can extend into the conductive strip positioning groove 301 to press the conductive strip 400. Wherein, an avoiding groove 506 is formed at the bottom of the convex edge 509 along the width direction of the lithium batteries 200. As shown in fig. 4, each conductive strip 400 includes at least two hardened regions and a non-hardened circular arc 402 located between any two adjacent hardened regions, each hardened region corresponds to a pole of a lithium battery, and the two adjacent hardened regions can be relatively bent through the non-hardened circular arc 402, so that each hardened region can be attached to the pole. The escape groove 506 is provided to escape the non-hardened arc 402 so that the flange 509 can be pressed against the hardened region of the conductive strip 400.
In order to weld the conductive strip 400 and the electrode post by using a laser or a laser welding head, a welding channel is formed in the conductive strip pressing plate assembly 500, and the welding channel vertically corresponds to the conductive strip positioning groove 301. As shown in fig. 5 and 6, the welding channel here includes a channel pressing plate portion 507 located on the pressing plate 501 and a channel pressing block portion 510 located on the bus bar pressing blocks 502, where the channel pressing plate portion 507 is a long groove extending along the length direction of the grouped lithium batteries 200, and the channel pressing block portion 510 is a through hole or a through groove distributed in a dot shape on each bus bar pressing block 502.
The press structure as shown in fig. 2 and 5, the press structure includes four brackets 601 fixedly mounted on the base plate 101, and the four brackets 601 are arranged in a matrix manner outside the bottom positioning groove 105. The support 601 extends upwards, a locking member 602 is installed on each support 601, four latches 603 are installed on the pressing plate 501, the four latches 603 correspond to the four locking members 602 one by one, the locking member 602 and the latches 603 are two parts of a quick clamp, the pressing plate 501 can be pressed downwards through the matching of the locking member 602 and the latches 603, and the pressing plate 501 presses the spring 504 and the conductive strip 400.
During the equipment, will be earlier put in groups lithium cell 200 on base plate 101, rely on width direction location strip 102, length direction fixed position strip 103 and length direction activity location strip 104 to fix a position the bottom of lithium cell 200 in groups, guarantee that lithium cell 200 in groups can not take place any horizontal direction's drunkenness. Then detain top locating plate 300 at the top of lithium cell 200 in groups, top locating slot 302 is fixed a position the top of lithium cell 200 in groups, guarantees that lithium cell 200 in groups can not take place the drunkenness on the whole. Then, the conductive strip 400 is placed in the conductive strip positioning groove 301 and positioned by the conductive strip positioning piece 701, the conductive strip pressing plate assembly 500 is integrally pressed on the conductive strip 400, and finally, the pressing structure is used for pressing, so that the positioning of the grouped lithium batteries 200 and the conductive strips 400 is completed, and then laser welding is performed.
In this embodiment, the width direction positioning strip 102, the length direction fixed positioning strip 103, and the length direction movable positioning strip 104 together form a bottom positioning groove 105, which positions the bottoms of the grouped lithium batteries, thereby forming a bottom positioning structure together. The bus bar positioning slots 301 are formed by placing bus bars together to form bus bar placing slots, in this embodiment, the slot walls in the width direction of the bus bar positioning slots 301 and the bus bar positioning members 701 together form a bus bar positioning structure for positioning the bus bars.
The specific embodiment 2 of the lithium battery module welding tool of the invention:
in embodiment 1, the pressing structure includes a holder, a locking member, and a lock catch. In this embodiment, hold-down structure can be for being independent of the hold-down mechanism that the base plate exists, for example hold-down structure includes the hold-down frame, and the hold-down frame lets out the welding passageway, sets up parts such as similar cylinder, hydro-cylinder in addition again and compresses tightly the hold-down frame.
The specific embodiment 3 of the lithium battery module welding tool of the invention:
in embodiment 1, only one movable positioning bar is arranged in two positioning bars in the length direction. In this embodiment, two location strips can be the activity location strip, and its regulation mode can adopt a plurality of holes in embodiment 1 to realize the position is adjustable, or can set up the spout and set up the jackscrew and carry out the position adjustable with the fixed after adjusting.
In other embodiments, the bottom positioning structure may include an expansion member that expands and contracts in the length direction and the width direction, and the expansion member is an air cylinder, an oil cylinder, or the like.
The specific embodiment 4 of the lithium battery module welding tool of the invention:
in example 1, there are a plurality of conductive strip compacts. In this embodiment, the bus bar pressing block may be an integrated pressing block, and when the bus bar pressing block is an integrated pressing block, the bus bar pressing block needs to be made of an insulating material. The avoiding area can be an avoiding hole or an avoiding groove arranged below the conductive strip pressing block.
The specific embodiment 5 of the lithium battery module welding tool of the invention:
in embodiment 1, the conductive strip pressing block has a convex edge protruding downward. In this embodiment, the bottom of the conductive bar pressing block is a flush structure.
The specific embodiment 6 of the lithium battery module welding tool of the invention:
in example 1, the conductive strip pressing block is mounted on the pressing plate by means of screw or bolt guidance. In this embodiment, the conductive strip pressing block may be mounted on the bottom of the pressing plate only by the spring.
The specific embodiment 7 of the lithium battery module welding tool of the invention:
in example 1, the conductive strip pressing block is float-fitted on the pressing plate in the up-down direction. In this embodiment, the conductive strip pressing block is rigidly fixed to the pressing plate or integrally formed on the pressing plate.
The specific embodiment 8 of the lithium battery module welding tool of the invention:
in embodiment 1, the conductive strip positioning structure includes a conductive strip positioning element and two groove walls of the conductive strip placement groove. In this embodiment, the conductive strip positioning structure may only include a conductive strip positioning element, and the conductive strip placement groove only plays a role in placing the conductive strip to make the conductive strip contact with the terminal, and no longer positions the conductive strip.
Or, in other embodiments, the conductive strip positioning structure only includes a slot wall of the conductive strip placement slot, and at this time, in order to perform omnidirectional positioning on the conductive strip, the conductive strip placement slot needs to be respectively set for each conductive strip, and the conductive strip is positioned by matching the size of the conductive strip placement slot with the size of the conductive strip.
Finally, although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments without departing from the inventive concept, or some of the technical features may be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a lithium battery module welding frock which characterized in that: the method comprises the following steps:
the base plate (101) is used for supporting and placing the group of lithium batteries (200), a bottom positioning structure is arranged on the base plate (101), and the bottom positioning structure is used for horizontally positioning the bottoms of the group of lithium batteries (200);
the top positioning plate (300) is arranged above the base, a top positioning groove (302) matched with the shape of the top of the group of lithium batteries (200) is formed in the bottom surface of the top positioning plate (300), the top positioning plate (300) is used for being matched and buckled on the top of the group of lithium batteries (200), and the top positioning groove (302) is used for horizontally positioning the top of the group of lithium batteries (200);
the top positioning plate (300) is provided with a conductive strip placing groove which is communicated up and down, the conductive strip placing groove corresponds to the poles of the grouped lithium batteries (200) up and down when in use, the top positioning plate (300) is provided with a conductive strip positioning structure, and the conductive strip positioning structure is used for positioning the conductive strip (400) so that the conductive strip (400) and the poles of the grouped lithium batteries (200) are arranged oppositely up and down;
lithium battery module welding frock still includes:
the conductive strip pressing plate assembly (500), the conductive strip pressing plate assembly (500) comprises a conductive strip pressing block (502) which is positioned at the bottom and used for jacking and pressing the conductive strip (400), welding channels which correspond to all the poles and the conductive strip positioning grooves (301) up and down in use are arranged on the conductive strip pressing plate assembly (500), and laser or laser welding heads can penetrate through the welding channels;
a pressing structure for pressing the conductive strip pressing plate assembly (500) against the conductive strip (400).
2. The lithium battery module welding tool of claim 1, characterized in that: the bus bar placing groove is a bus bar positioning groove (301) extending along the length direction of the grouped lithium batteries (200), the bus bar positioning structure comprises two groove walls of the bus bar positioning groove (301), and the two groove walls are used for being matched with two sides of the bus bar (400) in the width direction in a blocking manner to position in the width direction.
3. The lithium battery module welding tool of claim 2, characterized in that: the conductive strip positioning structure further comprises a conductive strip positioning piece (701), a positioning hole (702) which is used for being matched and inserted with the protrusion (401) extending up and down of the conductive strip (400) is formed in the conductive strip (400) in a positioning mode, and the conductive strip positioning piece (701) is fixed on the top positioning plate (300) after being matched and inserted with the protrusion (401) of the conductive strip (400);
an avoidance area (505) for avoiding the conductive strip positioning piece (701) is arranged on the conductive strip pressing block (502) of the conductive strip pressing plate component (500).
4. The lithium battery module welding tool of claim 1, characterized in that: the conductive strip pressing plate assembly (500) comprises a pressing plate (501), and the conductive strip pressing plate (502) is assembled on the pressing plate (501) in a floating mode along the up-down direction;
the conductive strip pressing plate assembly (500) further comprises an elastic piece arranged between the conductive strip pressing block (502) and the pressing plate (501), and the elastic piece is used for applying downward elastic force to the conductive strip pressing block (502);
the welding channel comprises a channel pressing plate part (507) arranged on the pressing plate (501) and a channel pressing block part (510) arranged on the conductive strip pressing block (502).
5. The lithium battery module welding tool of claim 4, characterized in that: the conductive strip pressing block (502) is provided with at least two threaded holes, a screw or a bolt (503) penetrates through the pressing plate (501) in a guiding mode, and the screw or the bolt (503) is screwed in the threaded holes, so that the conductive strip pressing block (502) is assembled on the pressing plate (501) in a vertically floating mode.
6. The lithium battery module welding tool of claim 4, characterized in that: the conductive strip pressing block (502) comprises convex edges (509) which are arranged in a downward protruding mode, the convex edges (509) extend along the length direction of the grouped lithium batteries (200), two convex edges are arranged corresponding to the same conductive strip (400) along the width direction, and the convex edges (509) are used for pressing the conductive strips (400);
the channel pressing block part (510) is arranged between the two convex edges (509).
7. The lithium battery module welding tool of claim 6, characterized in that: be equipped with on chimb (509) and dodge groove (506), dodge groove (506) and be arranged in dodging non-hardening circular arc (402) in conducting strip (400).
8. The lithium battery module welding tool of claim 4, characterized in that: the number of the conductive strip pressing blocks (502) is multiple, and two adjacent conductive strip pressing blocks (502) are arranged at intervals.
9. The lithium battery module welding tool according to any one of claims 1-8, characterized in that: the bottom positioning structure is a positioning strip arranged on the base plate (101), and the positioning strip surrounds to form a bottom positioning groove (105) for positioning the bottoms of the grouped lithium batteries (200);
the positioning strips comprise width direction positioning strips (102) for positioning the width direction of the grouped lithium batteries (200) and length direction positioning strips for positioning the width and length directions of the grouped lithium batteries (200);
at least one of the length direction positioning strips is a movable positioning strip movably arranged along the length direction.
10. The lithium battery module welding tool according to any one of claims 1-8, characterized in that: the pressing structure comprises a support (601) which is arranged on the base plate (101) and located on the outer side of the bottom positioning structure, a locking member (602) is arranged on the support (601), a lock catch (603) is correspondingly arranged on the conductive strip pressing plate assembly (500), and the locking member (602) is matched with the lock catch (603) to press the conductive strip pressing plate assembly (500) on the conductive strip (400).
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| CN202110541758.6A CN113210975A (en) | 2021-05-18 | 2021-05-18 | Lithium battery module welding tool |
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| CN202110541758.6A CN113210975A (en) | 2021-05-18 | 2021-05-18 | Lithium battery module welding tool |
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| CN113210975A true CN113210975A (en) | 2021-08-06 |
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Cited By (1)
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|---|---|---|---|---|
| CN114799699A (en) * | 2022-05-26 | 2022-07-29 | 宜宾长盈精密技术有限公司 | Battery cover plate pole welding tool |
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Application publication date: 20210806 |