Battery cell welding tool
By designing a cell welding tool including a base plate, a cell placement plate, a cell fixing member and a pressure plate, the possible offset problem of the battery cell during the welding process is solved, high-quality welding is achieved and the operation process is simplified.
Patent Information
- Application Number
- CN202420607175.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-03-26
AI Technical Summary
During the welding of the battery cell, the battery cell may be offset due to vibration, affecting the welding quality, and the welding tooling in the prior art is complicated and time-consuming.
A battery-cell welding tool is designed, including a base plate, a battery-cell placing plate, a battery-cell fixing member and a pressure plate. The battery-cell placing plate is movably connected to the base plate. The battery-cell fixing member is used to limit the fixing cell, and the pressure plate is used to tighten the fixed cell to prevent the battery from being displaced during welding or movement.
Through the battery cell welding tooling, the battery cell can be effectively prevented from displaced during welding or movement, improve welding quality, simplify operational processes and save time.
Smart Images
Figure CN222873723U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery production, in particular to a battery core welding tool. Background Art
[0002] The stacked lithium-ion battery cells need to be connected to the battery cover plate and then installed in the aluminum shell for sealing welding to form a lithium-ion battery. The welding quality of the tabs on the cell determines the quality and safety performance of the cell. When welding the stacked core, due to the matching requirements, after welding one of the core tabs, in order to ensure that the welding surface of the other unwelded core tab is consistent with the newly welded core tab, it is usually necessary to remove and move the tooling limit frame before welding the unwelded core tab. This welding process is relatively complicated and time-consuming.
[0003] In order to simplify the welding process and save time, the prior art adds a moving mechanism to the battery cell welding tooling, and the moving mechanism drives the battery cell placement plate to move, thereby simplifying the welding operation process and saving time. However, the process of the moving mechanism driving the battery cell placement plate to move may cause the battery cell to vibrate. During welding or battery cell movement, the battery cell may vibrate in the up and down directions, causing the battery cell to shift, thereby affecting the welding quality. Utility Model Content
[0004] The utility model provides a battery core welding tool, which can prevent the battery core from being displaced during movement.
[0005] The embodiments of the present invention can be implemented as follows:
[0006] The embodiment of the utility model provides a battery core welding tool, which includes:
[0007] Base plate;
[0008] A battery cell placement plate, wherein the battery cell placement plate is movably connected to the bottom plate;
[0009] A battery cell fixing member, the battery cell fixing member is arranged on the battery cell placement plate and is used for limiting and fixing the battery cell; and
[0010] A pressing plate is detachably connected to the battery core fixing member, and is used to press and fix the battery core.
[0011] In an optional embodiment, the battery cell placement plate is provided with an adjustment hole, the battery cell fixing member is connected to the battery cell placement plate through the adjustment hole, and the battery cell fixing member can move along the extension direction of the adjustment hole.
[0012] In an optional embodiment, the adjustment hole includes a first adjustment hole and a second adjustment hole, the first adjustment hole is a strip hole extending along the X direction, and the second adjustment hole is a strip hole extending along the Y direction; the X direction is perpendicular to the Y direction; wherein the X direction is the direction in which the battery cell placement plate can move relative to the bottom plate; the battery cell fixing member can move along the X direction and / or the Y direction.
[0013] In an optional embodiment, the battery cell fixing member includes a length limit block and a width limit block, and the length limit block and the width limit block are both connected to the battery cell placement plate; the length limit block and the width limit block are arranged vertically; the length limit block and the width limit block together enclose a battery cell fixing space, and the battery cell fixing space is used to place the battery cell.
[0014] In an optional embodiment, the battery cell welding tool further includes a moving device, the moving device is disposed on the bottom plate, and the battery cell placement plate is disposed at the upper end of the moving device.
[0015] In an optional embodiment, the moving device includes a driving member and a guiding member, both of which are arranged on the base plate, the battery cell placement plate is connected to the guiding member, and the driving member is used to drive the battery cell placement plate to move relative to the base plate through the guiding member.
[0016] In an optional embodiment, the guide member includes a guide rail and a slider, the guide rail is arranged on the bottom plate, the slider is slidably connected to the guide rail, and the slider is connected to the battery cell placement plate.
[0017] In an optional embodiment, the driving member is a bidirectional cylinder, the bidirectional cylinder is connected to the battery cell placement plate, and the bidirectional cylinder is used to drive the battery cell placement plate to move relative to the base plate.
[0018] In an optional embodiment, the battery cell welding tool further includes a support frame, one end of the support frame is connected to the moving device, and the other end of the support frame is connected to the battery cell placement plate.
[0019] In an optional embodiment, the support frame includes a sliding plate and a plurality of support columns, the sliding plate is connected to the moving device; for each of the support columns, one end of the support column is connected to the sliding plate, and the other end of the support column is connected to the battery cell placement plate; the plurality of support columns are spaced apart on the sliding plate.
[0020] In an optional embodiment, the pressing plate and the battery cell fixing member are detachably connected via pins.
[0021] The beneficial effects of the battery core welding tool of the embodiment of the utility model include:
[0022] The battery cell welding tool comprises a bottom plate, a battery cell placement plate, a battery cell fixing part and a pressing plate. The battery cell placement plate is movably connected to the bottom plate. The battery cell fixing part is arranged on the battery cell placement plate and is used to limit and fix the battery cell. The pressing plate is detachably connected to the battery cell fixing part and is used to press and fix the battery cell. The battery cell fixing part and the pressing plate are used together to fix the battery cell, thereby preventing the battery cell from moving up, down, left, right, forward, and backward during welding or relative movement of the bottom plate, so as to improve the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 A schematic diagram of a battery core welding tool provided in an embodiment of the utility model;
[0025] Figure 2 An exploded schematic diagram of a first-angle view of a battery core welding tool provided in an embodiment of the utility model;
[0026] Figure 3 An exploded schematic diagram of a second viewing angle of a battery core welding tool provided in an embodiment of the utility model;
[0027] Figure 4 This is a schematic diagram of a battery cell placement plate provided in an embodiment of the present utility model.
[0028] Icons: 1000-battery cell welding tooling; 100-base plate; 200-moving device; 210-driving member; 220-guide member; 221-guide rail; 222-slider; 300-battery cell placement plate; 310-adjustment hole; 311-first adjustment hole; 312-second adjustment hole; 400-battery cell fixing member; 410-length limit block; 420-width limit block; 430-battery cell fixing space; 500-pressing plate; 600-support frame; 610-sliding plate; 620-support column; 2000-battery cell. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the devices of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0032] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.
[0033] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.
[0034] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.
[0035] The stacked lithium-ion battery cells need to be connected to the battery cover plate and then loaded into the aluminum shell for sealing welding to form a lithium-ion battery. The welding quality of the tabs on the cell determines the quality and safety performance of the cell. At present, due to the matching requirements, when the stacked core is welded, after welding one of the core tabs, in order to ensure that the welding surface of the other unwelded core tab is consistent with the newly welded core tab, it is usually necessary to remove and move the tooling limit frame before welding the unwelded core tab. This welding process is relatively complicated and time-consuming. In addition, during the welding process, most welding tools do not limit the cell in the up and down directions, and the cell may shift, affecting the welding quality.
[0036] Based on this, please refer to Figure 1 , Figure 2 and Figure 3 The battery core welding tool 1000 provided in the present invention can effectively improve the above-mentioned technical problems. The battery core welding tool 1000 can quickly switch the positions of the two winding core tabs of the battery core 2000 to be welded, and can prevent the battery core 2000 from being displaced during the movement process.
[0037] Figure 1 It is a schematic diagram of a battery core welding tool 1000 provided in an embodiment of the utility model; Figure 2 It is an exploded schematic diagram of a first perspective of a battery core welding tool 1000 provided in an embodiment of the utility model; Figure 3 for Figure 2 Another perspective diagram, such as Figure 1 , Figure 2 and Figure 3 As shown, the battery cell welding tool 1000 includes a base plate 100, a battery cell placement plate 300, a battery cell fixing member 400 and a pressing plate 500, and the battery cell placement plate 300 is movably connected to the base plate 100. The battery cell fixing member 400 is arranged on the battery cell placement plate 300, and is used to limit and fix the battery cell 2000; the pressing plate 500 is detachably connected to the battery cell fixing member 400, and the pressing plate 500 is used to press and fix the battery cell 2000. During welding, the battery cell 2000 is placed on the battery cell placement plate 300, and the battery cell fixing member 400 and the pressing plate 500 are used to fix the battery cell 2000 together to prevent the battery cell 2000 from moving up, down, left, right, forward, and backward during welding or relative movement of the base plate, so as to improve the welding quality.
[0038] To prevent the battery cell 2000 from moving during welding and affecting the welding quality, please refer to Figure 2 and Figure 3 , and combined with Figure 1 The battery cell fixing member 400 in this embodiment includes a length limiting block 410 and a width limiting block 420, both of which are connected to the battery cell placement plate 300; the length limiting block 410 and the width limiting block 420 are vertically arranged; the length limiting block 410 and the width limiting block 420 together enclose a battery cell fixing space 430, and the battery cell fixing space 430 is used to place the battery cell 2000.
[0039] Specifically, the number of the length limit block 410 and the width limit block 420 in the present embodiment are both two, the two length limit blocks 410 are parallel and spaced along the X direction, and the two width limit blocks 420 are parallel and spaced along the Y direction. The length limit block 410 limits the movement of the battery cell 2000 in the X direction, and the width limit block 420 limits the movement of the battery cell 2000 in the Y direction. Among them, the X direction is the direction in which the battery cell placement plate 300 can move relative to the bottom plate 100. In order to prevent the battery cell 2000 from moving forward, backward, left and right during welding, the size of the battery cell fixing space 430 is consistent with the size of the battery cell 2000 to be welded. The length limit block 410 in the present embodiment is "L"-shaped, and the width limit block 420 is a long strip. In addition, the length limit block 410 and the width limit block 420 can also be designed as other shape structures, and the design can be adjusted according to the model of the battery cell 2000, which is not limited here.
[0040] As long as the cell fixing space 430 enclosed by the length limit block 410 and the width limit block 420 can limit the movement of the cell 2000 in the X direction or the Y direction, the length limit block 410 and / or the width limit block 420 can be fixedly connected to the cell placement plate 300, such as welding. The length limit block 410 and / or the width limit block 420 can also be detachably connected to the cell placement plate 300, such as bolt connection, snap connection, etc. In this embodiment, the cell fixing member 400 is connected to the cell placement plate 300 by screws or bolts. In addition, the length limit block 410 may contact or not contact the width limit block 420, according to specific needs and cost design, which is not limited here. In the process of the cell placement plate 300 moving relative to the bottom plate 100, the cell 2000 may be caused to shake up and down. Therefore, the cell welding tool 1000 in this embodiment includes a pressing plate 500, which is detachably connected to the cell fixing member 400. In order to facilitate installation and disassembly, the pressing plate 500 and the battery cell fixing member 400 in this embodiment are detachably connected by pins. Of course, bolts, screws, etc., or other detachable connection methods can also be used as long as the battery cell 2000 can be restricted from moving up and down. The specific detachable connection method used by the pressing plate 500 to connect with the battery cell fixing member 400 is not limited here.
[0041] In order to realize the welding of various types of battery cells 2000, compatible adaptation is carried out according to different battery cell 2000 sizes. Figure 4 This is a schematic diagram of the battery cell placement plate 300 provided in the embodiment of the present utility model, please refer to Figure 2 and Figure 3 , and combined with Figure 4In this embodiment, the cell placement plate 300 is provided with an adjustment hole 310, and the cell fixing member 400 is connected to the cell placement plate 300 through the adjustment hole 310, and the cell fixing member 400 can move along the extension direction of the adjustment hole 310. By adjusting the position of the cell fixing member 400 in the adjustment hole 310, the size of the cell fixing space 430 surrounded by the cell fixing member 400 can be adjusted to accommodate different types of cells 2000.
[0042] Specifically, the adjustment hole 310 in this embodiment includes a first adjustment hole 311 and a second adjustment hole 312, the first adjustment hole 311 is a strip hole extending along the X direction, and the second adjustment hole 312 is a strip hole extending along the Y direction; the X direction is perpendicular to the Y direction; wherein the X direction is the direction in which the battery cell placement plate 300 can move relative to the base plate 100; the battery cell fixing member 400 can move along the X direction and / or the Y direction.
[0043] Please continue reading Figure 2 and Figure 3 , and combined with Figure 1 , the above-mentioned "cell placement plate 300 and the bottom plate 100 mobile device 200 can be movably connected", in detail, the cell welding tool 1000 in this embodiment also includes a mobile device 200, which is arranged on the bottom plate, and the upper end of the mobile device 200 is provided with a cell placement plate 300. After welding a winding core tab, the mobile device 200 can drive the cell placement plate 300 to move relative to the bottom plate 100 to achieve rapid switching of the position of the winding core tab of the cell 2000, thereby simplifying the welding operation process and reducing the welding time. In addition, it also ensures that the welding surfaces of the two winding core tabs remain consistent, ensuring the welding quality of the cell 2000.
[0044] In order to improve the stability of the movement of the battery cell placement plate 300 relative to the mobile device 200, the mobile device 200 in this embodiment includes a driving member 210 and a guide member 220, both of which are arranged on the base plate 100, and the battery cell placement plate 300 is connected to the guide member 220, and the driving member 210 is used to drive the battery cell placement plate 300 to move relative to the base plate 100 through the guide member 220. Of course, the driving member 210 can be directly connected to the battery cell placement plate 300, or directly connected to the guide member 220. The driving member 210 can directly drive the battery cell placement plate 300 to move, or it can drive the guide member 220 to move, thereby driving the battery cell placement plate 300 to move. The specific connection situation can be set according to actual needs and is not limited here.
[0045] In addition, the moving device 200 may also only include the driving member 210, and the cell placement plate 300 is connected to the driving member 210. For example, the driving member 210 is a two-way cylinder, the cell placement plate 300 is connected to the two-way cylinder, and the two-way cylinder drives the cell placement plate 300 to move left and right.
[0046] Please continue reading Figure 2 and Figure 3 , and combined with Figure 1 The guide member 220 in this embodiment includes a guide rail 221 and a slider 222. The guide rail 221 is arranged on the bottom plate 100, and the slider 222 is slidably connected to the guide rail 221. The slider 222 is connected to the battery cell placement plate 300. In order to improve the sliding stability of the battery cell placement plate 300, the number of the guide rails 221 in this embodiment is two, and the number of the sliders 222 is four. Two guide rails 221 are arranged in parallel on the bottom plate 100, and two sliders 222 are slidably provided on each guide rail 221. The two sliders 222 are arranged at intervals, and each slider 222 is connected to the battery cell placement plate 300. Of course, one slider 222 can be set on each guide rail 221, or only one guide rail 221 can be set. The number of guide rails 221 and sliders 222 can be set according to specific cost requirements and other structural stability conditions, which are not limited here. In addition, the guide rail 221 can also be replaced by a slide groove.
[0047] In order to simplify the structure and reduce the production cost, the driving member 210 in this embodiment is a bidirectional cylinder, which is connected to the battery cell placement plate 300 and is used to drive the battery cell placement plate 300 to move relative to the bottom plate 100. Of course, the driving member 210 can also be a bidirectional hydraulic cylinder or a motor, as long as the bidirectional movement of the battery cell placement plate 300 can be achieved.
[0048] Please continue reading Figure 2 and Figure 3 , and combined with Figure 1 , the battery cell welding tool 1000 in this embodiment also includes a support frame 600, one end of the support frame 600 is connected to the mobile device 200, and the other end of the support frame 600 is connected to the battery cell placement plate 300. Specifically, the support frame 600 in this embodiment includes a sliding plate 610 and a plurality of support columns 620, the sliding plate 610 is connected to the mobile device 200; for each support column 620, one end of the support column 620 is connected to the sliding plate 610, and the other end of the support column 620 is connected to the battery cell placement plate 300; a plurality of support columns 620 are arranged at intervals on the sliding plate 610. The support columns 620 and the sliding plate 610 can be connected by welding or by threading. The number of support columns 620 in this embodiment is four. Of course, the number of support columns 620 can also be six, eight, etc., which is not limited here. In addition, the support column 620 may be replaced by a connection block or other structure, as long as a stable connection between the sliding plate 610 and the battery cell placement plate 300 can be achieved and a certain height can be maintained between the sliding plate 610 and the battery cell placement plate 300.
[0049] In the prior art, ultrasonic welding is often used to complete the welding of the tabs. Ultrasonic welding uses high-frequency vibration waves to transmit to the surfaces of two objects to be welded. Under pressure, the surfaces of the two objects are rubbed against each other to form a fusion between the molecular layers. During ultrasonic welding, neither current is transmitted to the workpiece nor a high-temperature heat source is applied to the workpiece. Only under static pressure, the wire frame vibration energy is converted into friction work, deformation energy and limited temperature rise between the workpieces. The metallurgical bonding between the joints is a solid-state welding achieved without melting the parent material. Therefore, it effectively overcomes the spatter and oxidation phenomena generated during resistance welding. Ultrasonic metal welding machines can perform single-point welding, multi-point welding and short strip welding on thin wires or thin sheet materials of non-ferrous metals such as copper, silver, aluminum, and nickel. It can be widely used in the welding of thyristor leads, fuse plates, electrical leads, lithium battery pole pieces, and tabs.
[0050] The battery cell welding tool 1000 in this embodiment is mainly used for ultrasonic welding, but is not limited to ultrasonic welding, and can also be applied to various welding methods or scenarios of battery cells 2000 such as laser welding.
[0051] According to a battery core welding tool 1000 provided in this embodiment, its working principle is as follows:
[0052] First, remove the pressing plate 500, place the battery cell 2000 in the battery cell fixing part 400 to form the battery cell fixing space 430, then press the pressing plate 500 on the top of the battery cell 2000 to be welded, connect the pressing plate 500 with the battery cell fixing part 400, fix the battery cell 2000, and weld one of the winding core tabs. After welding is completed, the moving device 200 drives the battery cell placement plate 300 to move so that the other winding core tab to be welded reaches the welding position, repeats the welding operation process, and completes the welding of the two winding core tabs. In this way, the welding position of the winding core tab can be quickly switched, the operation process is simplified, and the welding time is saved.
[0053] When the model of the welded battery cell 2000 needs to be replaced, the connection between the battery cell fixing member 400 and the battery cell placement plate 300 is disconnected, and the battery cell fixing member 400 is moved along the adjustment hole 310 to adjust the size of the battery cell fixing space 430 formed by the battery cell fixing member 400 to adapt to various models of battery cells 2000. Of course, the shape and structure of the battery cell fixing member 400 can also be replaced according to the model of the battery cell 2000 to meet the requirements of the replacement.
[0054] In summary, the battery cell welding tool 1000 includes a base plate 100, a battery cell placement plate 300, a battery cell fixing member 400 and a pressing plate 500, and the battery cell placement plate 300 is movably connected to the base plate 100. The battery cell fixing member 400 is arranged on the battery cell placement plate 300, and is used to limit and fix the battery cell 2000; the pressing plate 500 is detachably connected to the battery cell fixing member 400, and the pressing plate 500 is used to press and fix the battery cell 2000. During welding, the battery cell 2000 is placed on the battery cell placement plate 300, and the battery cell fixing member 400 and the pressing plate 500 are used to fix the battery cell 2000 together to prevent the battery cell 2000 from moving up, down, left, right, forward, and backward during welding or moving relative to the base plate 100, so as to improve the welding quality.
[0055] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.
Claims
1. A battery core welding tool, characterized in that: include: Bottom plate (100); A cell placement plate (300), wherein the cell placement plate (300) is movably connected to the bottom plate (100); A battery cell fixing member (400), the battery cell fixing member (400) being arranged on the battery cell placement plate (300) and being used for limiting and fixing the battery cell (2000); and A pressing plate (500), the pressing plate (500) being detachably connected to the battery core fixing member (400), and the pressing plate (500) being used to press and fix the battery core (2000); The battery cell fixing member (400) comprises a length limiting block (410) and a width limiting block (420), wherein the length limiting block (410) and the width limiting block (420) are both connected to the battery cell placement plate (300); the length limiting block (410) and the width limiting block (420) are arranged vertically; the length limiting block (410) and the width limiting block (420) together enclose a battery cell fixing space (430), and the battery cell fixing space (430) is used to place the battery cell (2000).
2. The battery core welding tool according to claim 1, characterized in that: The battery cell placement plate (300) is provided with an adjustment hole (310), the battery cell fixing piece (400) is connected to the battery cell placement plate (300) through the adjustment hole (310), and the battery cell fixing piece (400) can move along the extension direction of the adjustment hole (310).
3. The battery core welding tool according to claim 2, characterized in that: The adjustment hole (310) comprises a first adjustment hole (311) and a second adjustment hole (312); the first adjustment hole (311) is a strip hole extending along the X direction, and the second adjustment hole (312) is a strip hole extending along the Y direction; the X direction is perpendicular to the Y direction; wherein the X direction is the direction in which the battery cell placement plate (300) can move relative to the bottom plate (100); and the battery cell fixing member (400) can move along the X direction and / or the Y direction.
4. The battery core welding tool according to claim 1, characterized in that: The battery core welding tool (1000) further comprises a moving device (200), wherein the moving device (200) is arranged on the bottom plate, and the battery core placement plate (300) is arranged at the upper end of the moving device (200).
5. The battery core welding tool according to claim 4, characterized in that: The moving device (200) comprises a driving member (210) and a guiding member (220), wherein the driving member (210) and the guiding member (220) are both arranged on the bottom plate (100), the battery cell placement plate (300) is connected to the guiding member (220), and the driving member (210) is used to drive the battery cell placement plate (300) to move relative to the bottom plate (100) via the guiding member (220).
6. The battery core welding tool according to claim 5, characterized in that: The guide member (220) comprises a guide rail (221) and a slider (222); the guide rail (221) is arranged on the bottom plate (100); the slider (222) is slidably connected to the guide rail (221); and the slider (222) is connected to the battery cell placement plate (300).
7. The battery core welding tool according to claim 5, characterized in that: The driving member (210) is a bidirectional cylinder, which is connected to the battery cell placement plate (300) and is used to drive the battery cell placement plate (300) to move relative to the bottom plate (100).
8. The battery core welding tool according to claim 4, characterized in that: The battery cell welding tool (1000) further comprises a support frame (600), one end of the support frame (600) is connected to the moving device (200), and the other end of the support frame (600) is connected to the battery cell placement plate (300).
9. The battery core welding tool according to claim 8, characterized in that: The support frame (600) comprises a sliding plate (610) and a plurality of support columns (620), wherein the sliding plate (610) is connected to the moving device (200); for each of the support columns (620), one end of the support column (620) is connected to the sliding plate (610), and the other end of the support column (620) is connected to the battery cell placement plate (300); and the plurality of support columns (620) are arranged at intervals on the sliding plate (610).