A multi-cell series welder

Abstract

The present application relates to a kind of multi-battery series welding machine, including workbench and the mounting plate fixed on its top, the front of the mounting plate is provided with the extrusion mechanism for fixing nickel sheet, support mechanism for placing nickel sheet is provided on the mounting plate below the extrusion mechanism, the top of the workbench is symmetrically provided with two limiting mechanisms for positioning nickel sheet;Nickel sheet is fixed by two pressing plates, in the process that the extension end of cylinder continues to elongate, the inclined surface of adjusting rod is opposite to the rolling of gyro wheel, so that support plate is extracted from the lower side of nickel sheet, avoid nickel sheet to bend due to gravity influence, guarantee the working efficiency of nickel sheet, the extension end of cylinder is elongated to the longest state, nickel sheet is contacted with the positive pole or negative pole of battery pack, it is convenient for spot welding machine to be welded in turn, avoid nickel sheet to occur deviation or move in the welding process, prevent the fracture between battery pack and nickel sheet, guarantee the efficiency of battery pack series welding.

Description

Technical Field

[0001] This invention relates to the field of power battery manufacturing technology, specifically to a multi-cell series welding machine. Background Technology

[0002] In the lithium battery production process, because the capacity and voltage of the batteries are limited, multiple batteries are often welded together for use in actual applications. The existing welding method is to weld the two poles of multiple batteries to be welded onto different nickel sheets. The existing lithium battery series welding method involves welding one side with welding equipment and then continuing to weld the other side. After the double-sided welding is completed, it still needs to be removed manually, resulting in low efficiency of the entire welding process.

[0003] In existing welding methods, the degree of manual intervention is relatively high. It requires manual placement of nickel sheets on the positive or negative terminals of the battery pack, holding the nickel sheets in place, and then welding them with a spot welding machine. This process can easily cause injury to the operator. At the same time, the spot welding machine welds the battery packs sequentially. During this process, the nickel sheets are prone to shifting or shaking, which can easily cause breakage between the battery pack and the nickel sheets, thus affecting the efficiency of series welding of the battery packs. Summary of the Invention

[0004] The technical problem solved by this solution is:

[0005] (1) How to solve the problem of avoiding displacement or shaking during the welding of nickel sheets, and preventing breakage between the battery pack and the nickel sheets;

[0006] (2) How to solve the problem of avoiding injury to the operator during the welding process and reducing the degree of human intervention in the welding process.

[0007] The objective of this invention can be achieved through the following technical solution: a multi-cell series welding machine, comprising a workbench and a mounting plate fixed on its top, wherein the front of the mounting plate is provided with an extrusion mechanism for fixing nickel sheets, and the mounting plate below the extrusion mechanism is provided with a support mechanism for placing nickel sheets, and two limiting mechanisms for positioning nickel sheets are symmetrically provided on the top of the workbench.

[0008] The extrusion mechanism includes a cylinder fixed to the front of the mounting plate. An adjustment plate is fixedly installed at the extended end of the cylinder. Pressing rods are movably inserted at both ends of the adjustment plate. A pressing plate is fixedly installed at the bottom end of the pressing rod, and a first baffle is fixedly installed in the middle of the pressing rod.

[0009] A further technical improvement of the present invention is that a second baffle is fixedly installed on the top of the pressing rod, and a tension spring is elastically arranged between the second baffle and the adjusting plate.

[0010] A further technical improvement of the present invention is that: the limiting mechanism includes a guide plate fixedly connected to the worktable, the guide plate has a dovetail groove on the side facing the support mechanism, a slider is slidably arranged inside the dovetail groove, a support platform is fixedly installed on the slider, a limiting plate for determining the position of the nickel sheet is fixedly installed on the support platform, and a thrust spring is elastically arranged between the bottom of the slider and the bottom of the inner wall of the dovetail groove.

[0011] A further technical improvement of the present invention is that: a magnet is fixedly installed on the top of the inner wall of the dovetail groove; the slider is made of iron; the magnet and the slider are magnetically connected; and the magnetic force between the magnet and the slider is greater than the tension of the spring between the second baffle and the adjusting plate; by extending the cylinder's extension end, the two pressing plates move closer to their corresponding support platforms, thereby fixing the nickel sheet; as the cylinder's extension end continues to extend, the pressing rod slides relative to the adjusting plate, and the tension spring is stretched. At this time, the tension of the tension spring is less than the magnetic force between the magnet and the slider, and the position of the support platform does not move. At this time, the adjusting rod... The inclined plane and the roller roll relative to each other, thereby pushing the support plate to slide on the two guide rails. This allows the support plate to be pulled out from under the nickel sheet, preventing the nickel sheet from bending due to gravity and ensuring the working efficiency of the nickel sheet. During the process of the cylinder extending to its longest state, the adjusting plate applies pressure to the two first baffles, causing the two magnet blocks to separate from their corresponding sliders. The support platform, together with the pressing plate, drives the nickel sheet to make smooth contact with the positive or negative electrode of the battery pack, facilitating the spot welding machine to weld them sequentially. This prevents the nickel sheet from shifting or moving during the welding process, preventing breakage between the battery pack and the nickel sheet, and ensuring the efficiency of series welding of the battery pack.

[0012] A further technical improvement of the present invention is that: the support mechanism includes two guide rails fixedly connected to the front of the mounting plate, a support plate is slidably mounted on the top of the two guide rails, and both guide rails are located behind the support platform. A through groove is opened on the top surface of the support plate near the mounting plate, and a roller is fixedly mounted inside the through groove. An adjusting rod is fixedly mounted on the bottom of the adjusting plate, and the distance between the bottom end of the adjusting rod and the support plate is greater than the distance between the pressing plate and the support platform. The battery pack is accurately placed in the limiting groove, and then the nickel sheet is placed on the support plate. The position of the nickel sheet is adjusted so that both ends are in contact with the limiting plate, so that the position of the nickel sheet corresponds to the position of the battery pack. By moving the nickel sheet down to contact the battery pack, it is avoided that the nickel sheet needs to be pressed down and then welded by a spot welding machine, thus preventing injury to the operator during the welding process.

[0013] A further technical improvement of the present invention is that: the bottom of the adjusting rod is provided with an inclined surface, the position of the inclined surface corresponds to the position of the roller, and the top of the inclined surface is close to the mounting plate.

[0014] A further technical improvement of the present invention is that the top surface of the support plate and the top surface of the support platform are on the same horizontal plane.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In use, the cylinder extends, bringing the two pressing plates closer to their corresponding support platforms to fix the nickel sheet. As the cylinder continues to extend, the pressing rod slides relative to the adjusting plate, stretching the tension spring. At this point, the tension spring's force is less than the magnetic force between the magnet and the slider, preventing the support platform from moving. Meanwhile, the inclined surface of the adjusting rod rolls relative to the roller, pushing the support plate to slide on the two guide rails, allowing it to be pulled out from under the nickel sheet. This prevents the nickel sheet from bending due to gravity, ensuring its working efficiency. When the cylinder reaches its longest extension, the adjusting plate applies pressure to the two first baffles, causing the two magnets to separate from their corresponding sliders. The support platform, in conjunction with the pressing plates, smoothly brings the nickel sheet into contact with the positive or negative electrode of the battery pack, facilitating sequential welding by the spot welding machine. This prevents the nickel sheet from shifting or moving during welding, thus preventing breakage between the battery pack and the nickel sheet and ensuring efficient series welding of the battery pack.

[0017] In use, the battery pack is accurately placed into the limiting groove, and then the nickel sheet is placed on the support plate. The position of the nickel sheet is adjusted so that both ends are in contact with the limiting plate, so that the position of the nickel sheet corresponds to the position of the battery pack. By moving the nickel sheet down to contact the battery pack, it avoids the need to hold the nickel sheet down and then weld it with a spot welding machine, thus preventing injury to the operator during the welding process. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the extrusion mechanism of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0022] Figure 4 This is a cross-sectional view of the limiting mechanism structure of the present invention;

[0023] Figure 5 This is a cross-sectional view of the support mechanism structure of the present invention;

[0024] Figure 6 This is a three-dimensional schematic diagram of the adjusting rod of the present invention.

[0025] In the diagram: 1. Extrusion mechanism; 2. Mounting plate; 3. Support mechanism; 4. Battery pack; 5. Worktable; 6. Limiting mechanism; 101. Cylinder; 102. Adjusting plate; 103. Pressing plate; 104. Pressing rod; 105. Tension spring; 106. First baffle; 107. Second baffle; 301. Adjusting rod; 302. Through groove; 303. Roller; 304. Guide rail; 305. Support plate; 306. Inclined surface; 601. Magnet block; 602. Limiting plate; 603. Support platform; 604. Slider; 605. Dovetail groove; 606. Thrust spring; 607. Guide plate. Detailed Implementation

[0026] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1-6 As shown, a multi-cell series welding machine includes a worktable 5 and a mounting plate 2 fixed on its top. The front of the mounting plate 2 is provided with an extrusion mechanism 1 for fixing nickel sheets. The mounting plate 2 below the extrusion mechanism 1 is provided with a support mechanism 3 for placing nickel sheets. Two limiting mechanisms 6 for positioning nickel sheets are symmetrically arranged on the top of the worktable 5.

[0028] Please see Figures 1-3 As shown, the extrusion mechanism 1 includes a cylinder 101 fixed on the front of the mounting plate 2. An adjustment plate 102 is fixedly installed at the extended end of the cylinder 101. Pressing rods 104 are movably inserted at both ends of the adjustment plate 102. A pressing plate 103 is fixedly installed at the bottom end of the pressing rod 104, and a first baffle 106 is fixedly installed in the middle of the pressing rod 104.

[0029] Please see Figure 3 As shown, a second baffle 107 is fixedly installed on the top of the pressing rod 104, and a tension spring 105 is elastically provided between the second baffle 107 and the adjusting plate 102.

[0030] Please see Figure 1 and Figure 4As shown, the aforementioned limiting mechanism 6 includes a guide plate 607 fixedly connected to the worktable 5. The guide plate 607 has a dovetail groove 605 on its side facing the support mechanism 3. A slider 604 is slidably arranged inside the dovetail groove 605. A support platform 603 is fixedly installed on the slider 604. A limiting plate 602 for determining the position of the nickel sheet is fixedly installed on the support platform 603. A thrust spring 606 is elastically arranged between the bottom of the slider 604 and the bottom of the inner wall of the dovetail groove 605.

[0031] Please see Figure 4 As shown, a magnet 601 is fixedly installed on the top of the inner wall of the dovetail groove 605. The slider 604 is made of iron. The magnet 601 and the slider 604 are magnetically connected, and the magnetic force between the magnet 601 and the slider 604 is greater than the tension of the tension spring 105 between the second baffle 107 and the adjusting plate 102. By extending the extension end of the cylinder 101, the two pressing plates 103 are brought closer to the corresponding support platform 603, thereby fixing the nickel sheet. During the extension of the extension end of the cylinder 101, the pressing rod 104 slides relative to the adjusting plate 102, and the tension spring 105 is stretched. At this time, the tension of the tension spring 105 is less than the magnetic force between the magnet 601 and the slider 604, and the position of the support platform 603 does not move. At this time, the adjustment... The inclined surface 306 of the lever 301 rolls relative to the roller 303, thereby pushing the support plate 305 to slide on the two guide rails 304, so that the support plate 305 is pulled out from under the nickel sheet, avoiding the nickel sheet from bending due to gravity and ensuring the working efficiency of the nickel sheet. During the process of the cylinder 101 extending to its longest state, the adjusting plate 102 provides pressure to the two first baffles 106, so that the two magnet blocks 601 are separated from the corresponding sliders 604 respectively. The support platform 603, together with the pressing plate 103, drives the nickel sheet to make stable contact with the positive or negative electrode of the battery pack 4, which is convenient for the spot welding machine to weld them in sequence, avoiding the nickel sheet from shifting or moving during the welding process, preventing the battery pack 4 from breaking with the nickel sheet, and ensuring the efficiency of the series welding of the battery pack 4.

[0032] Please see Figure 1 and Figure 5As shown, the aforementioned support mechanism 3 includes two guide rails 304 fixedly connected to the front of the mounting plate 2. A support plate 305 is slidably mounted on the top of the two guide rails 304, and both guide rails 304 are located behind the support platform 603. A through groove 302 is opened on the top surface of the support plate 305 near the mounting plate 2. A roller 303 is fixedly mounted inside the through groove 302. An adjusting rod 301 is fixedly mounted on the bottom of the adjusting plate 102. The distance between the bottom end of the adjusting rod 301 and the support plate 305 is greater than the distance between the pressing plate 103 and the support platform 603. The battery pack 4 is accurately placed into the limiting groove, and then the nickel sheet is placed on the support plate 305. The position of the nickel sheet is adjusted so that both ends are in contact with the limiting plate 602, so that the position of the nickel sheet corresponds to the position of the battery pack 4. By moving the nickel sheet down to contact the battery pack 4, it is avoided that the nickel sheet needs to be pressed down and then welded by a spot welding machine, thus preventing injury to the operator during the welding process.

[0033] Please see Figure 1 , Figure 5 and Figure 6 As shown, the bottom of the aforementioned adjusting rod 301 is provided with an inclined surface 306, the position of the inclined surface 306 corresponds to the position of the roller 303, and the top of the inclined surface 306 is close to the mounting plate 2.

[0034] Please see Figure 1 As shown, the top surface of the support plate 305 and the top surface of the support platform 603 are on the same horizontal plane.

[0035] Please see Figure 1 As shown, a limiting groove is provided on the top of the workbench 5, and the battery pack 4 is placed inside the limiting groove.

[0036] Working Principle: In use, the battery pack 4 is first accurately placed into the limiting groove, and then the nickel sheet is placed on the support plate 305. The position of the nickel sheet is adjusted so that both ends are in contact with the limiting plate 602, thus aligning the position of the nickel sheet with that of the battery pack 4. By moving the nickel sheet downwards to contact the battery pack 4, the need to hold the nickel sheet down and then weld it using a spot welding machine is avoided, preventing injury to the operator during the welding process. The extension of the cylinder 101 causes the two pressing plates 103 to approach the corresponding support platform 603, thereby fixing the nickel sheet. As the cylinder 101 continues to extend, the pressing rod 104 slides relative to the adjusting plate 102, and the tension spring 105 is stretched. At this time, the tension of the tension spring 105 is less than the magnetic force between the magnet 601 and the slider 604, and the position of the support platform 603 does not move. The inclined surface 306 of the lever 301 rolls relative to the roller 303, thereby pushing the support plate 305 to slide on the two guide rails 304, so that the support plate 305 is pulled out from under the nickel sheet, avoiding the nickel sheet from bending due to gravity and ensuring the working efficiency of the nickel sheet. During the process of the cylinder 101 extending to its longest state, the adjusting plate 102 provides pressure to the two first baffles 106, so that the two magnet blocks 601 are separated from the corresponding sliders 604 respectively. The support platform 603, together with the pressing plate 103, drives the nickel sheet to make stable contact with the positive or negative electrode of the battery pack 4, which is convenient for the spot welding machine to weld them in sequence, avoiding the nickel sheet from shifting or moving during the welding process, preventing the battery pack 4 from breaking with the nickel sheet, and ensuring the efficiency of series welding of the battery pack 4. By pressing down the two sliders 604, it is easy to remove the welded battery pack 4 from the limiting groove.

[0037] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A multi-cell series welding machine, comprising a worktable (5) and a mounting plate (2) fixed on its top, characterized in that: The front of the mounting plate (2) is provided with an extrusion mechanism (1) for fixing nickel sheets. The mounting plate (2) below the extrusion mechanism (1) is provided with a support mechanism (3) for placing nickel sheets. The top of the worktable (5) is symmetrically provided with two limiting mechanisms (6) for positioning nickel sheets. The extrusion mechanism (1) includes a cylinder (101) fixed on the front of the mounting plate (2). An adjustment plate (102) is fixedly installed at the extended end of the cylinder (101). A pressing rod (104) is movably inserted at both ends of the adjustment plate (102). A pressing plate (103) is fixedly installed at the bottom end of the pressing rod (104), and a first baffle (106) is fixedly installed in the middle of the pressing rod (104). The limiting mechanism (6) includes a guide plate (607) fixedly connected to the worktable (5). The guide plate (607) has a dovetail groove (605) on its side facing the support mechanism (3). A slider (604) is slidably arranged inside the dovetail groove (605). A support platform (603) is fixedly installed on the slider (604). A limiting plate (602) for determining the position of the nickel sheet is fixedly installed on the support platform (603). A thrust spring (606) is elastically arranged between the bottom of the slider (604) and the bottom of the inner wall of the dovetail groove (605). The support mechanism (3) includes two guide rails (304) fixedly connected to the front of the mounting plate (2). A support plate (305) is slidably mounted on the top of the two guide rails (304), and both guide rails (304) are located behind the support platform (603). A through groove (302) is opened on the top surface of the support plate (305) near the end of the mounting plate (2). A roller (303) is fixedly mounted inside the through groove (302). An adjusting rod (301) is fixedly mounted on the bottom of the adjusting plate (102). The distance between the bottom end of the adjusting rod (301) and the support plate (305) is greater than the distance between the pressing plate (103) and the support platform (603). The bottom of the adjusting rod (301) is provided with an inclined surface (306), the position of the inclined surface (306) corresponds to the position of the roller (303), and the top of the inclined surface (306) is close to the mounting plate (2).

2. The multi-battery series welding machine according to claim 1, characterized in that, A second baffle (107) is fixedly installed on the top of the pressing rod (104), and a tension spring (105) is elastically provided between the second baffle (107) and the adjusting plate (102).

3. The multi-battery series welding machine according to claim 2, characterized in that, A magnet block (601) is fixedly installed on the top of the inner wall of the dovetail groove (605). The slider (604) is made of iron. The magnet block (601) and the slider (604) are magnetically connected. The magnetic force between the magnet block (601) and the slider (604) is greater than the tension of the tension spring (105) between the second baffle (107) and the adjusting plate (102).

4. A multi-battery series welding machine according to claim 1, characterized in that, The top surface of the support plate (305) and the top surface of the support platform (603) are on the same horizontal plane.

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