A multi-layer tab cell jig and shell cover welding machine

Abstract

The utility model relates to a kind of multi-layer tab electric core fixture and shell cover welding machine, wherein multi-layer tab electric core fixture includes fixture base, support seat, fixture bottom plate, electric core pressing piece and tab folding pressing piece, the support seat and fixture bottom plate are installed on the fixture base, the fixture bottom plate is used to carry electric core, electric core pressing piece is liftable and is installed on the support seat, the electric core pressing piece is used to press in the electric core main body, tab folding pressing piece is liftable and is installed on the support seat, the tab folding pressing piece includes main part and tab pressing plate part, the tab pressing plate part is arranged along vertical direction, to be pressed in when moving to the direction of electric core The multi-layer tab of electric core of the utility model has the beneficial effects that compact structure can realize the pressing of electric core main body, and can realize the pressing and folding of electric core tab, improve electric core production quality.

Description

Technical Field

[0001] This utility model relates to the field of battery cell fixture technology, specifically to a multi-layer tab battery cell fixture and a shell and cover welding machine. Background Technology

[0002] In today's electronic devices and new energy fields, battery performance and safety are of paramount importance. Multilayer tab cells, as an advanced battery structure, are increasingly being used in electric vehicles, portable electronic devices, and energy storage systems due to their advantages such as significantly improving charge and discharge efficiency, reducing internal resistance, and increasing power density.

[0003] In the production process of multi-layer tab battery cells, the multi-layer tabs on the battery cell are prone to being scattered and uneven. If they cannot be effectively gathered and pressed together, problems such as poor welding and poor contact will occur in subsequent welding or connection processes. A battery cell fixture is needed to simultaneously press the battery cell body and gather the tabs in a limited space. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-layer tab battery cell fixture and shell welding machine with a compact structure that can simultaneously press the battery cell body and press and gather the battery cell tabs, thereby improving the quality of battery cell production.

[0005] A multilayer electrode cell fixture, comprising: Fixture base; A support base is mounted on the fixture base; A fixture base plate is mounted on the fixture base, and the fixture base plate is used to support the battery cell; A cell pressing component is mounted on the support base in a height-adjustable manner, and the cell pressing component is used to press the cell body onto the cell body; The tab retracting clamp is mounted on the support base in a height-adjustable manner. The tab retracting clamp includes a main body and a tab clamping plate. The tab clamping plate is arranged in a vertical direction to press the multi-layer tabs of the battery cell when it moves toward the battery cell.

[0006] In the above scheme, after the battery cell is placed on the base plate of the fixture, the battery cell pressing component descends and presses onto the battery cell body, thereby ensuring the stability of the battery cell body. Then, the tab closing pressing component descends, and the vertical tab pressing plate gathers and presses the multiple tabs together, making them neatly arranged. This avoids problems such as poor welding and poor contact during the welding or connection of the tabs, and can improve the reliability and stability of the product. The support base provides stable support for the battery cell pressing component and the tab closing pressing component, while ensuring that the pressing of the battery cell body and the gathering of multiple tabs can be achieved in an orderly manner under limited space conditions. The fixture base is used to connect with the magnetic levitation line and other conveying systems, so that the battery cell fixture and the battery cell pressed on the base plate of the fixture can move along the track of the magnetic levitation line and other conveying systems.

[0007] Furthermore, at least one slider and at least one transmission block are installed on the end face of the fixture base away from the fixture base plate, and the transmission block is movably connected to a magnetic drive block.

[0008] In the above scheme, the magnetic drive block moves along the track of the magnetic levitation line under the action of magnetic force. The transmission block is movably connected to the magnetic drive block to facilitate the installation and disassembly of the battery cell fixture. The slider is designed to pass through the guide rail of the magnetic levitation line. The magnetic drive block can drive the transmission block to move, thereby driving the entire battery cell fixture to move along the guide rail direction, realizing the smooth transfer of the battery cell. This eliminates the need for motors or cylinders to drive the movement of the battery cell fixture, and can remove redundant accessories such as motor wires and cylinder pipes, thereby simplifying the mechanical structure and saving power resources.

[0009] Furthermore, the magnetic drive block includes at least two rollers, and the transmission block is movably disposed between the two rollers.

[0010] In the above scheme, the assembly and disassembly of the battery cell fixture can be achieved by inserting the transmission block between the two rollers or pulling it out from between the two rollers. The contact between the rollers and the transmission block is rolling friction. Compared with sliding friction, rolling friction has less frictional force, which can reduce energy loss and wear during transmission and improve the turnover efficiency of the battery cell fixture.

[0011] Furthermore, a first lifting drive assembly and a second lifting drive assembly are installed on the support base. The first lifting drive assembly is connected to the cell pressing component, and the second lifting drive assembly is connected to the tab closing pressing component.

[0012] In the above scheme, the first lifting drive component can precisely control the lifting action and pressure of the cell pressing component, and the second lifting drive component can precisely control the lifting and lowering pressure of the tab closing pressing component to ensure that the tabs are neatly arranged and tightly fitted, so that the tab closing effect is optimal. The first lifting drive component and the second lifting drive component can independently control the action of the cell pressing component and the tab closing pressing component, so as to be suitable for the production needs of cell of different specifications.

[0013] Furthermore, the first lifting drive assembly includes a first drive member and a first lifting connecting plate, the first drive rod of the first drive member is connected to the lifting connecting plate, and the battery cell pressure member is connected to the first lifting connecting plate.

[0014] In the above scheme, the first driving component can precisely control the extension and retraction of the first driving rod. The first driving rod is connected to the first lifting connecting plate, thereby driving the cell pressing component to move up and down. This precise displacement control enables the cell pressing component to accurately reach the designated pressing position, and can achieve precise pressing for different thickness specifications of multi-layer tab cells.

[0015] Furthermore, the second lifting drive assembly includes a second drive member, a second lifting connecting plate, and a pressure member mounting plate. The second drive rod of the second drive member is connected to the second lifting connecting plate. The second lifting connecting plate is movably disposed above the first lifting connecting plate. The pressure member mounting plate is connected to the second lifting connecting plate. The tab retracting pressure member is adjustablely connected to the pressure member mounting plate.

[0016] In the above scheme, the second driving component can precisely control the extension and retraction of the second driving rod, driving the second lifting connecting plate and the pressure plate to move up and down precisely, thereby precisely controlling the position of the electrode tab closing pressure, so that the electrode tab is neatly closed according to the design requirements, avoiding problems such as the electrode tab being skewed or crossed, improving the quality of the electrode tab closing, and providing a good foundation for subsequent welding and other processes.

[0017] Furthermore, the mounting plate of the pressure component has a plurality of strip-shaped holes along its length, and the tab closing pressure component is connected to the strip-shaped holes by fasteners.

[0018] In the above scheme, during the production of multi-layer tab cells, the position and spacing of the tabs of cells of different specifications may be different. By adjusting the installation position of the tab gathering and pressing component on the strip hole, the tab pressing plate on the tab gathering and pressing component can be accurately aligned with the position where the tab needs to be pressed, so as to achieve effective gathering of tabs of different specifications.

[0019] Furthermore, the support base is also equipped with several vertical linear guide rails, the first lifting connecting plate is connected to several first sliding blocks, the second lifting connecting plate is connected to several second sliding blocks, and the first and second sliding blocks are slidably connected to the linear guide rails.

[0020] In the above scheme, the linear guide rail provides precise guidance for the lifting and lowering movements of the first lifting connecting plate and the second lifting connecting plate. The first sliding block and the second sliding block slide on the linear guide rail, which can ensure the accuracy of the movement of the first lifting connecting plate and the second lifting connecting plate, thereby ensuring the stability and consistency of the cell pressing component and the electrode closing pressing component pressing the cell body and the electrode.

[0021] Furthermore, the first driving member and the second driving member are respectively installed on both sides of the support base, the first driving rod is located between the second driving rod and the first lifting connecting plate, the second driving rod is connected to a connecting member, and the connecting member passes through the support base and connects to the second lifting connecting plate.

[0022] In the above scheme, the first driving component and the second driving component effectively utilize the installation space of the support base. The driving rod is located between the second driving rod and the first lifting connecting plate. The second driving rod passes through the support base and is connected to the second lifting connecting plate through the connector. This realizes a reasonable layered arrangement of the first lifting driving component and the second lifting driving component in the vertical direction, making the overall structure of the battery cell fixture compact and occupying little space.

[0023] A casing welding machine includes a multi-layer tab battery cell fixture as described in any of the above embodiments.

[0024] This utility model discloses a multi-layer electrode battery cell fixture and shell cover welding machine with a compact structure. It can simultaneously press and gather the battery cell body and the electrode tabs, thus improving the battery cell production quality. After the battery cell is placed on the fixture base plate, the battery cell pressing component descends and presses onto the battery cell body, ensuring the stability of the battery cell body. Then, the electrode tab gathering pressing component descends, and the vertical electrode tab pressing plate gathers and presses the multi-layer electrode tabs together, arranging them neatly. This avoids problems such as incomplete welding and poor contact during the welding or connection process, improving the reliability and stability of the product. The support base provides stable support for the battery cell pressing component and the electrode tab gathering pressing component, while ensuring the orderly pressing of the battery cell body and the gathering of the multi-layer electrode tabs under limited space conditions. The fixture base is used to connect with conveying systems such as magnetic levitation lines, allowing the battery cell fixture and the battery cell pressed onto the fixture base plate to move along the track of the conveying system such as magnetic levitation lines. Attached Figure Description

[0025] Figure 1 This is a perspective view of a multilayer electrode cell fixture according to one embodiment.

[0026] Figure 2 This is a schematic diagram of the transmission block and slider structure of a multilayer electrode cell fixture according to one embodiment.

[0027] Figure 3 This is a schematic diagram of the transmission block and rollers of a multilayer electrode cell fixture according to one embodiment.

[0028] Figure 4 This is a schematic diagram of the connection of a sliding component according to one embodiment.

[0029] Figure 5 This is a schematic diagram showing the connection between the first lifting drive assembly and the second lifting drive assembly in one embodiment.

[0030] Figure 6 for Figure 5 A magnified view of a portion of the image.

[0031] Reference numerals: 1. Fixture base; 2. Support base; 3. Fixture base plate; 4. Cell clamping component; 5. Electrode clamping component; 51. Main body; 52. Electrode clamping plate; 53. Connecting protrusion; 6. Transmission block; 7. Slider; 8. Roller; 9. First lifting drive assembly; 91. First drive component; 92. First drive rod; 93. First lifting connecting plate; 10. Second lifting drive assembly; 101. Second drive component; 102. Second drive rod; 103. Second lifting connecting plate; 104. Clamping component mounting plate; 1041. Strip hole; 105. Connector; 11. Linear guide rail; 12. First sliding block; 13. Second sliding block. Detailed Implementation

[0032] The following will describe in further detail a multi-layer electrode core fixture and a shell and cover welding machine of this utility model with reference to specific embodiments and accompanying drawings.

[0033] like Figures 1 to 6 As shown in a preferred embodiment, the multi-layer tab battery cell fixture of this utility model includes a fixture base 1, a support base 2, a fixture bottom plate 3, a battery cell pressing component 4, and a tab-gathering pressing component 5. The support base 2 and the fixture bottom plate 3 are mounted on the fixture base 1. The fixture bottom plate 3 is used to support the battery cell. The battery cell pressing component 4 is mounted on the support base 2 in a liftable manner. The battery cell pressing component 4 is used to press onto the battery cell body. The tab-gathering pressing component 5 is mounted on the support base 2 in a liftable manner. The tab-gathering pressing component 5 includes a main body part 51 and a tab pressing plate part 52. The tab pressing plate part 51 is arranged in a vertical direction and is used to press the multi-layer tabs of the battery cell when moving towards the battery cell.

[0034] Specifically, after the battery cell is placed on the base plate 3 of the fixture, the battery cell pressing component 4 descends and presses down on the battery cell body to ensure the stability of the battery cell body. Then, the tab-gathering pressing component 5 descends, and the vertical tab-gathering plate gathers and presses the multiple tabs together, making them neatly arranged. This avoids problems such as poor welding and poor contact during the welding or connection process of the tabs, and can improve the reliability and stability of the product. The end of the tab-gathering plate 52 used to press the battery cell tabs needs to be processed into an arc surface to avoid damaging the battery cell tabs. Additionally, refer to... Figure 6 The height of the tab pressure plate 52 is higher than that of the main body 51, so that the main body 51 will not squeeze the main body of the cell during the downward pressing of the tab pressure plate 52, thereby ensuring the quality of cell production.

[0035] In this embodiment, the support base 2 provides stable support for the cell pressing component 4 and the tab gathering pressing component 5, while ensuring that the cell body is pressed and the multi-layer tabs are gathered in an orderly manner under limited space conditions. The fixture base 1 is used to connect with the magnetic levitation line and other conveying systems, so that the cell fixture and the cell pressed on the fixture base plate 3 can move along the track of the magnetic levitation line and other conveying systems, making the cell fixture more flexible and versatile.

[0036] like Figure 2 and Figure 3 As shown, in some embodiments, at least one slider 7 and at least one transmission block 6 are installed on the end face of the fixture base 1 away from the fixture base plate 3. The transmission block 6 is movably connected to a magnetic drive block. The magnetic drive block moves along the track of the magnetic levitation line under the action of magnetic force. The movable connection between the transmission block 6 and the magnetic drive block facilitates the installation and disassembly of the battery cell fixture. The slider 7 is designed to pass through the guide rail of the magnetic levitation line. The magnetic drive block can drive the transmission block 6 to move, thereby driving the entire battery cell fixture to move along the guide rail direction, realizing the smooth transfer of the battery cell. This eliminates the need for motors or cylinders to drive the movement of the battery cell fixture, eliminating redundant accessories such as motor wires and cylinder pipes, simplifying the mechanical structure and saving power resources.

[0037] Specifically, the transmission block is T-shaped and is stably connected to the fixture base by screws and other fasteners.

[0038] In this embodiment, a specific magnetic field distribution exists around the track of the magnetic levitation line. The magnetic drive block is designed to interact with this magnetic field. The magnetic drive block is equivalent to a mover. According to the principle of electromagnetic induction or the principle of magnetic interaction between permanent magnets, when the magnetic field changes or a specific magnetic field gradient exists, the magnetic drive block will be driven by the magnetic force and move along the track of the magnetic levitation line. Both the magnetic drive block and the magnetic levitation line are existing technologies, and their structures will not be described or shown in detail here.

[0039] like Figure 2 and Figure 3As shown, in some embodiments, the magnetic drive block includes at least two rollers 8, and the transmission block 6 is movably disposed between the two rollers 8. There can be one or more transmission blocks 6, and the corresponding magnetic drive block needs to be designed with one or more sets of rollers 8. One set of rollers 8 has two rollers. The assembly and disassembly of the battery cell fixture can be realized by inserting the transmission block 6 between the two rollers 8 or pulling it out between the two rollers 8. The contact between the rollers 8 and the transmission block 6 is rolling friction. Compared with sliding friction, rolling friction has less frictional force, which can reduce energy loss and wear during transmission and improve the turnover efficiency of the battery cell fixture.

[0040] In this embodiment, when the magnetic drive block moves along the track under the action of magnetic force, the roller 8 will move together with the magnetic drive block. Since the transmission block 6 is sandwiched between the two rollers 8, the rolling of the rollers 8 will drive the transmission block 6 to move synchronously. Since the transmission block 6 is installed on the fixture base 1, the movement of the transmission block 6 will drive the entire battery cell fixture to move along the guide rail direction, realizing the transfer of the battery cell. The friction between the transmission block 6 and the roller 8 is relatively small compared to other structures, and the surface of the roller 8 has a wear-resistant coating and built-in bearings, thereby ensuring that the battery cell fixture moves smoothly and without jamming when it is raised, lowered or moved horizontally.

[0041] like Figure 2 As shown, in some embodiments, a first lifting drive assembly 9 and a second lifting drive assembly 10 are installed on the support base 2. The first lifting drive assembly 9 is connected to the cell pressing component 4, and the second lifting drive assembly 10 is connected to the tab-gathering pressing component 5. The first lifting drive assembly 9 can precisely control the lifting action and pressure of the cell pressing component 4, and the second lifting drive assembly 10 can precisely control the lifting and lowering pressure of the tab-gathering pressing component 5 to ensure that the tabs are neatly arranged and tightly fitted, so that the tab-gathering effect is optimal. The first lifting drive assembly 9 and the second lifting drive assembly 10 can independently control the action of the cell pressing component 4 and the tab-gathering pressing component 5, thus adapting to the production needs of different specifications of cells.

[0042] like Figure 4 and Figure 5 As shown, in some embodiments, the first lifting drive assembly 9 includes a first drive member 91 and a first lifting connecting plate 93. The first drive rod 92 of the first drive member 91 is connected to the lifting connecting plate, and the cell pressing member 4 is connected to the first lifting connecting plate 93. The first drive member 91 can precisely control the extension and retraction of the first drive rod 92. The first drive rod 92 is connected to the first lifting connecting plate 93, thereby driving the cell pressing member 4 to move up and down. This precise displacement control enables the cell pressing member 4 to accurately reach the designated pressing position, achieving precise pressing for multilayer tab cells of different thicknesses.

[0043] like Figure 4 and Figure 5As shown, in some embodiments, the second lifting drive assembly 10 includes a second drive member 101, a second lifting connecting plate 103, and a pressure mounting plate 104. The second drive rod 102 of the second drive member 101 is connected to the second lifting connecting plate 103. The second lifting connecting plate 103 is movably positioned above the first lifting connecting plate 93. The pressure mounting plate 104 is connected to the second lifting connecting plate 103. The electrode ear retracting pressure member 5 is adjustablely connected to the pressure mounting plate 104. The second drive member 101 can precisely control the extension and retraction of the second drive rod 102, driving the second lifting connecting plate 103 and the pressure mounting plate 104 to achieve precise up and down movement, thereby precisely controlling the position of the electrode ear retracting pressure member 5, so that the electrode ear is neatly retracted according to the design requirements, avoiding problems such as electrode ear skewing and crossing, improving the quality of electrode ear retracting, and providing a good foundation for subsequent welding and other processes. Here, both the first drive member and the second drive member are cylinders.

[0044] In this embodiment, the first lifting connecting plate 93 is generally L-shaped, and the part of the second lifting connecting plate 103 connected to the pressure mounting plate 104 is also L-shaped. The first lifting connecting plate 93 is provided with a groove that cooperates with the second lifting connecting plate 103, which makes the overall structure of the first lifting drive assembly 9 and the second lifting drive assembly 10 more compact.

[0045] like Figure 5 and Figure 6 As shown, in some embodiments, the mounting plate 104 has a plurality of strip holes 1041 along its length, and the tab-gathering clamping member 5 is connected to the strip holes 1041 by fasteners. In the production of multilayer tab cells, the position and spacing of the tabs of cells of different specifications may be different. By adjusting the installation position of the tab-gathering clamping member 5 on the strip holes 1041, the tab pressure plate portion 52 of the tab-gathering clamping member 5 can be precisely aligned with the position where the tab needs to be pressed, thereby achieving effective gathering of tabs of different specifications.

[0046] In this embodiment, the main body 51 is provided with a connecting protrusion 53 that passes through the strip hole. The connecting protrusion 53 is provided with a threaded hole. By passing the fastener through the strip hole 1041 and threading it with the threaded hole, the connection between the pressure plate 104 and the tab retracting pressure member 5 can be realized.

[0047] like Figure 4 and Figure 5As shown, in some embodiments, the support base 2 is also equipped with several vertical linear guide rails 11. The first lifting connecting plate 93 is connected to several first sliding blocks 12, and the second lifting connecting plate 103 is connected to several second sliding blocks 13. The first sliding blocks 12 and the second sliding blocks 13 are slidably connected to the linear guide rails 11. The linear guide rails 11 provide precise guidance for the lifting and lowering movements of the first lifting connecting plate 93 and the second lifting connecting plate 103. The sliding of the first sliding blocks 12 and the second sliding blocks 13 on the linear guide rails 11 can ensure the accuracy of the movement of the first lifting connecting plate 93 and the second lifting connecting plate 103, thereby ensuring the stability and consistency of the cell pressing component 4 and the electrode closing pressing component 5 pressing the cell body and the electrode.

[0048] like Figure 4 and Figure 5 As shown, in some embodiments, the first driving member 91 and the second driving member 101 are respectively installed on both sides of the support base 2. The first driving rod 92 is located between the second driving rod 102 and the first lifting connecting plate 93. The second driving rod 102 is connected to a connector 105, which passes through the support base 2 and connects to the second lifting connecting plate 103. The first driving member 91 and the second driving member 101 effectively utilize the installation space of the support base 2. The driving rod is located between the second driving rod 102 and the first lifting connecting plate 93, and the second driving rod 102 passes through the support base 2 and connects to the second lifting connecting plate 103 through the connector 105. Here, the downward extension length of the first driving rod 92 is longer than that of the second driving rod 102, realizing a reasonable layered arrangement of the first lifting drive assembly 9 and the second lifting drive assembly 10 in the vertical direction, making the overall structure of the battery cell fixture compact and occupying little space.

[0049] A casing welding machine includes a multilayer tab battery cell fixture as described in any of the above embodiments.

[0050] The working principle and process of this utility model of a multi-layer electrode welding fixture and shell cover welding machine are as follows: The multi-layer electrode cell is placed on the fixture base plate 3, which provides a bearing surface for the cell, ensuring that the cell is placed stably in the initial state. Then, the cell pressing component 4 begins to descend until it presses the cell body tightly, keeping the cell body stable during subsequent operations and preventing displacement or shaking. After the cell body is stably fixed, the electrode closing pressing component 5 located above the cell pressing component 4 descends, closing and pressing the multi-layer electrode of the cell. The fixture base 1 is connected to a conveying system such as a magnetic levitation line. After the cell body pressing and electrode closing pressing operations are completed, the fixture base 1 can drive the entire multi-layer electrode cell fixture and the cell pressed on the fixture base plate 3 to move along the track of the conveying system to the next process.

[0051] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A multi-layer electrode cell fixture, characterized in that, include: Fixture base; A support base is mounted on the fixture base; A fixture base plate is mounted on the fixture base, and the fixture base plate is used to support the battery cell; A cell pressing component is mounted on the support base in a height-adjustable manner, and the cell pressing component is used to press the cell body onto the cell body; The tab retracting clamp is mounted on the support base in a height-adjustable manner. The tab retracting clamp includes a main body and a tab clamping plate. The tab clamping plate is arranged in a vertical direction to press the multi-layer tabs of the battery cell when it moves toward the battery cell.

2. The multilayer electrode cell fixture according to claim 1, characterized in that, At least one slider and at least one transmission block are mounted on the end face of the fixture base away from the fixture base plate, and the transmission block is movably connected to a magnetic drive block.

3. The multilayer electrode cell fixture according to claim 2, characterized in that, The magnetic drive block includes at least two rollers, and the transmission block is movably disposed between the two rollers.

4. The multilayer electrode cell fixture according to claim 1, characterized in that, The support base is equipped with a first lifting drive assembly and a second lifting drive assembly. The first lifting drive assembly is connected to the cell pressing component, and the second lifting drive assembly is connected to the tab closing pressing component.

5. The multilayer electrode cell fixture according to claim 4, characterized in that, The first lifting drive assembly includes a first drive member and a first lifting connecting plate. The first drive rod of the first drive member is connected to the lifting connecting plate, and the battery cell pressure member is connected to the first lifting connecting plate.

6. The multilayer electrode cell fixture according to claim 5, characterized in that, The second lifting drive assembly includes a second drive member, a second lifting connecting plate, and a pressure member mounting plate. The second drive rod of the second drive member is connected to the second lifting connecting plate. The second lifting connecting plate is movably disposed above the first lifting connecting plate. The pressure member mounting plate is connected to the second lifting connecting plate. The tab retracting pressure member is adjustablely connected to the pressure member mounting plate.

7. The multilayer electrode cell fixture according to claim 6, characterized in that, The mounting plate of the pressure component has several strip-shaped holes along its length, and the tab closing pressure component is connected to the strip-shaped holes by fasteners.

8. The multilayer electrode cell fixture according to claim 6, characterized in that, The support base is also equipped with several vertical linear guide rails. The first lifting connecting plate is connected to several first sliding blocks, and the second lifting connecting plate is connected to several second sliding blocks. The first and second sliding blocks are slidably connected to the linear guide rails.

9. The multilayer electrode cell fixture according to claim 6, characterized in that, The first driving component and the second driving component are respectively installed on both sides of the support base. The first driving rod is located between the second driving rod and the first lifting connecting plate. The second driving rod is connected to a connecting component, which passes through the support base and connects to the second lifting connecting plate.

10. A shell and cover welding machine, characterized in that, Includes the multilayer electrode cell fixture as described in any one of claims 1 to 9.

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