Battery cell pre-spot welding mechanism

Abstract

The utility model relates to the technical field of lithium battery production equipment, in particular to a battery cell pre-spot-welding mechanism which comprises a welding clamp, a feeding and discharging module and a driving module, the welding clamp comprises a battery cell placing table used for placing a battery cell, and a reference block used for positioning the battery cell is arranged on one side of the battery cell placing table; the feeding and discharging module is arranged on one side of the welding clamp and comprises a supporting cantilever used for placing a battery cell and an avoiding assembly. The driving module is arranged between the welding clamp and the feeding and discharging module and used for driving the feeding and discharging module to move towards or away from the welding clamp. According to the utility model, the avoiding component is additionally arranged in the loading and unloading module, so that the supporting cantilever can move towards the direction opposite to the reference block, and no friction is generated between the battery cell and the reference block in the subsequent loading or unloading process; the problem that the surface of the battery cell is easily scratched by the reference block and even the interior of the battery cell is damaged in the charging or discharging process is solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of lithium battery production equipment, specifically relating to a cell pre-spot welding mechanism. Background Technology

[0002] In the manufacturing process of blade batteries, the cover plate at the end of the cell needs to be welded to the outer casing. During the welding process, a laser pre-spot welding process is usually required between the positive and negative electrode cover plates and the aluminum casing. This initial positioning and fixation of the cover plate and the outer casing is achieved before continuous welding to ensure a complete seal between the cover plate and the outer casing. In existing cell pre-spot welding mechanisms, a reference block is typically used to position one side of the cell during welding, followed by clamping to fix and clamp the cell.

[0003] However, this can cause hard friction between one side of the battery cell and the reference block when loading or unloading the welded battery cell. This can not only scratch the surface of the product, but also damage the inside of the battery cell, thus affecting the product quality. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides a cell pre-spot welding mechanism.

[0005] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0006] A cell pre-spot welding mechanism, comprising:

[0007] A welding fixture includes a battery cell placement platform for placing battery cells, wherein a reference block for positioning the battery cells is provided on one side of the battery cell placement platform;

[0008] A loading / unloading module, disposed on one side of the welding fixture, includes a support cantilever for placing battery cells and a clearance assembly; and

[0009] A drive module is located between the welding fixture and the loading / unloading module, and is used to drive the loading / unloading module to move toward or away from the welding fixture;

[0010] The avoidance component is located between the support cantilever and the drive module, and is used to drive the support cantilever to shift in the direction away from the reference block.

[0011] In some embodiments, the loading and unloading module further includes a support base and a lifting module, wherein the lifting module is disposed on the support base;

[0012] The driving end of the lifting module is connected to one end of the support cantilever to drive the support cantilever to rise and fall.

[0013] In some embodiments, the avoidance component is disposed between the support base and the drive end of the drive module.

[0014] In some embodiments, the avoidance component includes a first drive member and a first guide member cooperating with the first drive member;

[0015] The first guide is arranged horizontally and perpendicular to the driving direction of the drive assembly.

[0016] In some embodiments, the first guide member is disposed on the drive end of the drive module;

[0017] The avoidance component also includes a rod, one end of which is connected to the drive end of the drive module, and the other end of which passes through the support base;

[0018] The movable end of the first guide member is connected to the support base, the first drive member is disposed on the support base, and the drive end of the first drive member is connected to the other end of the rod body, so that the first drive member can drive the support base to move along the first guide member.

[0019] In some embodiments, the support cantilever is provided with a fixing component for fixing the battery cell.

[0020] In some embodiments, the fixing component includes a fixing member, a clamping member, and a second driving member;

[0021] The fixing member is located at one end of the support cantilever facing the welding fixture, and the clamping member is located at the other end of the support cantilever opposite to the fixing member. The second driving member is connected to the clamping member in a transmission manner to drive the clamping member to move closer to or away from the fixing member.

[0022] In some embodiments, the cell placement platform is provided with a positioning element at one end near the loading and unloading module, and the positioning element has a slot adapted to the support cantilever.

[0023] The cell placement platform is also provided with a third driving component, which is connected to the positioning component in a transmission manner; the positioning component is driven by the third driving component to push the support cantilever to move in the avoidance direction of the avoidance component.

[0024] In some embodiments, the support cantilever includes a plurality of support rods, with gaps between adjacent support rods;

[0025] The battery cell placement platform has placement slots adapted to several of the support rods, and the support rods pass through the placement slots to place the battery cells on the battery cell placement platform.

[0026] In some embodiments, the welding fixture further includes a hollow rotating platform, a fourth driving member, and a battery cell pressing assembly for pressing the battery cells together. The fourth driving member is connected to the hollow rotating platform to drive the hollow rotating platform to rotate.

[0027] The cell placement platform is disposed within the hollow rotating platform, and the cell pressing assembly is disposed at the end of the cell placement platform.

[0028] In summary, this utility model has the following advantages:

[0029] This embodiment uses a support cantilever of the loading / unloading module to place the battery cells. During loading or unloading, a positioning component drives the support cantilever to shift away from the reference block, thus moving the battery cells away from the reference block. The drive module then moves the cells closer to or further away from the welding fixture to complete the loading / unloading process. This ensures that no friction occurs between the battery cells and the reference block during loading / unloading, solving the problem of surface scratches and internal damage to the battery cells caused by the reference block, reducing the defect rate and ensuring product quality. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the cell pre-spot welding mechanism in the embodiments of this application.

[0031] Figure 2 This is a schematic diagram of the loading and unloading module in an embodiment of this application.

[0032] Figure 3 This is a front view of the support base in an embodiment of this application.

[0033] Figure 4 This is a schematic diagram of the structure of the fixed component in the embodiments of this application.

[0034] Figure 5 This is a schematic diagram of the welding fixture on the side away from the loading and unloading module in an embodiment of this application.

[0035] Figure 6 This is a schematic diagram of the welding fixture near the loading / unloading module in an embodiment of this application.

[0036] Figure 7 This is a schematic diagram of the dust removal component in the embodiments of this application.

[0037] Marked in the image:

[0038] 1. Welding fixture; 110. Cell placement platform; 111. Placement slot; 120. Reference block;

[0039] 2. Loading / unloading module; 210. Support cantilever; 211. Support rod; 220. Alternating positioning component; 221. First driving component; 222. First guide component; 223. Rod body; 230. Support base; 240. Lifting module;

[0040] 3. Drive module; 4. Fixing component; 410. Fixing component; 420. Clamping component; 430. Second drive component; 5. Positioning component; 6. Third drive component; 7. Hollow rotary platform; 8. Battery cell pressing assembly; 9. Dust removal assembly; 91. Dust removal pipe; 92. Electrical slip ring; 93. Dust removal hood; 94. Coaxial adjustment assembly. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only some embodiments of this utility model, not all embodiments.

[0042] 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 claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] Example 1

[0044] Please see the appendix Figure 1-5 This embodiment provides a pre-spot welding mechanism for battery cells, which is used to perform spot welding on the positive and negative electrode cover plates and aluminum shell of the battery cell. Laser welding is an option, but not limited to, laser welding, and is a pretreatment for the cover plates and aluminum shell before full welding.

[0045] The pre-spot welding mechanism for battery cells includes a welding fixture 1, a loading / unloading module 2, and a drive module 3. The welding fixture 1 includes a battery cell placement platform 110 for placing battery cells, and a reference block 120 for positioning battery cells is provided on one side of the battery cell placement platform 110. The loading / unloading module 2 is located on one side of the welding fixture 1 and includes a support cantilever 210 for placing battery cells and a positioning component 220. The drive module 3 is located between the welding fixture 1 and the loading / unloading module 2 and is used to drive the loading / unloading module 2 to move toward or away from the welding fixture 1. The positioning component 220 is located between the support cantilever 210 and the drive module 3 and is used to drive the support cantilever 210 to shift away from the reference block 120.

[0046] Specifically, the cell placement stage 110 is provided with welding positions for soldering the cells. The cells are placed on one side of the welding positions on the cell placement stage 110, and a reference block 120 is provided on one side of the cell placement stage 110. It can be understood that multiple reference blocks 120 can be provided, and multiple reference blocks 120 are arranged on the same side of the cell placement stage 110. The reference block 120 is used to position the cells. When one side of the cell abuts against the reference block 120, it indicates that the cell has been placed in the preset position on the cell placement stage 110.

[0047] The loading / unloading module 2 is used to place the battery cells into the battery cell placement platform 110. It is located on one side of the welding fixture 1, directly opposite the battery cell placement platform 110. The loading / unloading module 2 includes a support cantilever 210 for placing the battery cells and a clearance assembly 220. The drive module 3 is located between the welding fixture 1 and the loading / unloading module 2. The drive module 3 is connected to the loading / unloading module 2 and can drive the loading / unloading module 2 to move towards the welding fixture 1, thereby placing the battery cells on the support cantilever 210 onto the battery cell placement platform 110; or drive the loading / unloading module 2 to move away from the welding fixture 1, thereby unloading the battery cells from the battery cell placement platform 110 via the support cantilever 210. It can be understood that the drive module 3 can be a combination of a motor and a lead screw guide, a linear module, etc., and the loading / unloading module 2 is located on the drive end of the drive module 3.

[0048] The avoidance component 220 is located between the support cantilever 210 and the drive module 3, and is used to drive the support cantilever 210 to shift in the direction away from the reference block 120. The avoidance component 220 can be configured as a cylinder, a lead screw and guide rail, etc. The drive end of the avoidance component 220 is connected to the support cantilever 210 for transmission, and drives it to move in the direction away from the reference block 120, thereby preventing hard friction between the side of the battery cell and the reference block 120 during material feeding.

[0049] In one embodiment, an external device places the battery cell onto the support cantilever 210. The drive module 3 then moves the support cantilever 210 toward the welding fixture 1, so that the support cantilever 210 places the battery cell at a preset position on the battery cell placement stage 110. At this time, one side of the battery cell abuts against the reference block 120, completing the battery cell loading process. After loading is completed, the drive module 3 drives the support cantilever 210 to reset and performs welding on the battery cell, including but not limited to laser pre-spot welding and contour gauge gap detection.

[0050] In another embodiment, an external device places the battery cell onto the support cantilever 210. The drive module 3 moves the support cantilever 210 toward the welding fixture 1. At this time, the positioning component 220 moves the support cantilever 210 away from the reference block 120, so that the side of the battery cell facing the reference block 120 is away from the reference block 120. Then, the drive mechanism moves the support cantilever 210 to place the battery cell at a preset position on the battery cell placement platform 110. By shifting the battery cell on the support cantilever 210 through the positioning component 220, hard friction between the battery cell and the reference block 120 during the feeding process can be avoided, which could damage the battery cell. Furthermore, it can also prevent dust generated by hard friction during feeding, which could cause explosions in the battery cell during subsequent welding.

[0051] After the battery cell is soldered, the drive module 3 drives the support cantilever 210 to lift the battery cell on the battery cell placement platform 110. At this time, the battery cell is transferred to the support cantilever 210. The positioning component 220 drives the support cantilever 210 to move away from the reference block 120, so that the side of the battery cell facing the reference block 120 is away from the reference block 120. Then the drive component drives the support cantilever 210 to move and unload the battery cell.

[0052] This embodiment uses a support cantilever of the loading / unloading module to place the battery cell. During loading or unloading, a positioning component drives the support cantilever to shift away from the reference block, thus moving the battery cell away from the reference block. The drive module then moves the battery cell closer to or further away from the welding fixture to complete the loading / unloading process. This ensures that there is no friction between the battery cell and the reference block 120 during loading / unloading, solving the problem of the battery cell surface being easily scratched by the reference block or even causing internal damage during loading / unloading, reducing the defect rate of the battery cell and ensuring product quality.

[0053] Example 2

[0054] The difference between Example 2 and Example 1 is that the pre-spot welding mechanism for the battery cell has been further optimized in this example. See [link to example]. Figure 2-6 Furthermore, the loading and unloading module 2 also includes a support base 230 and a lifting module 240, with the lifting module 240 mounted on the support base 230; the driving end of the lifting module 240 is connected to one end of the support cantilever 210 to drive the support cantilever 210 to lift.

[0055] The support base 230 is used to mount the lifting module 240 and the support cantilever 210, and the support base 230 is a housing. The lifting module 240 can be a combination of a cylinder, a motor, and a lead screw and guide rail, etc. The lifting module 240 is set inside the support base 230, and the drive end of the lifting module 240 is connected to the support cantilever 210, driving the support cantilever 210 to rise or fall. By setting up the support base 230 and the lifting module 240, the battery cells can be lifted or lowered through the support cantilever 210, realizing the automatic loading and unloading function of the battery cells.

[0056] In some embodiments, the avoidance component 220 is disposed between the support base 230 and the drive end of the drive module 3. Disposing the avoidance component 220 between the support base 230 and the drive end of the drive module 3 reduces the footprint of the equipment and improves loading and unloading efficiency. In use, the drive component moves the support base 230 and the avoidance component 220 to a relative position. Subsequently, the avoidance component 220 causes the support base 230 to shift, thus completing the loading and unloading of battery cells and the avoidance operation.

[0057] In some embodiments, the avoidance component 220 includes a first driving member 221 and a first guide member 222 cooperating with the first driving member 221; the first guide member 222 is arranged along a driving direction perpendicular to the driving component. The first guide member 222 can be a guide rail, and the first driving member 221 can be a cylinder. A slider is provided on the guide rail, and a support seat 230 is disposed on the slider. The first driving member 221 is kinetically connected to the support seat 230, driving the support seat 230 to slide along the guide rail. Alternatively, the first driving member 221 can be a motor, the first guide member 222 can be a lead screw and a guide rail, and the support seat 230 can be movably disposed on the lead screw, with the motor rotating to move the support seat 230. This embodiment does not limit the specific arrangement.

[0058] Furthermore, the first guide member 222 is disposed on the driving end of the driving module 3; the avoidance component 220 also includes a rod 223, one end of which is connected to the driving end of the driving module 3, and the other end of which passes through the support base 230; the movable end of the first guide member 222 is connected to the support base 230, and the first driving member 221 is disposed on the support base 230, and the driving end of the first driving member 221 is connected to the other end of the rod 223, so that the first driving member 221 can drive the support base 230 to move along the first guide member 222.

[0059] Specifically, the first guide member 222 is a guide rail, which is fixedly mounted on the drive end of the drive module 3. A slider is provided on the guide rail, and the support base 230 is connected to the slider. One end of the rod 223 is connected to the drive end of the drive module 3, and the other end passes through the support base 230 and is connected to the first drive member 221. The first drive member 221 can be a cylinder. When the cylinder extends, it drives the support base 230 to move in the direction opposite to the reference block 120, thereby moving the battery cell away from the reference block 120 and preventing the battery cell from contacting and rubbing against the reference block 120.

[0060] In some embodiments, a fixing component 4 for fixing the battery cell is provided on the support cantilever 210. The fixing component 4 is provided on the support cantilever 210 and can fix and limit the battery cell cover plate and aluminum shell. The fixing component 4 can be configured in such a way as fixing both ends of the battery cell with a cylinder and fixing blocks, or fixing both sides of the battery cell with a cylinder and pressure blocks.

[0061] In some embodiments, the fixing component 4 includes a fixing member 410, a clamping member 420, and a second driving member 430; the fixing member 410 is disposed at one end of the supporting cantilever 210 opposite to the welding fixture 1, the clamping member 420 is disposed at the other end of the supporting cantilever 210 opposite to the fixing member 410, and the second driving member 430 is connected to the clamping member 420 in a transmission connection to drive the clamping member 420 to move closer to or away from the fixing member 410.

[0062] Specifically, the fixing component 410 and the clamping component 420 are a fixing block and a clamping block, respectively, and there can be multiple of them, which are set at the end of the supporting cantilever 210. The second driving component 430 may include a cylinder, a motor, a gear rack, etc. Taking a cylinder as an example, the driving end of the cylinder is connected to the clamping component 420. When the battery cell is placed in the battery cell placement area, the cylinder pushes the clamping component 420, thereby pushing the battery cell to move until it abuts against the fixing component 410, clamping the battery cell and limiting the battery cell cover plate and aluminum shell to prevent it from popping open.

[0063] In some embodiments, the cell placement platform 110 is provided with a positioning member 5 at one end near the loading / unloading module 2. The positioning member 5 has a slot adapted to the support cantilever 210. The cell placement platform 110 is also provided with a third driving member 6, which is connected to the positioning member 5. The positioning member 5 is driven by the third driving member 6 to push the support cantilever 210 to move in the avoidance direction of the avoidance component 220. The third driving member 6 can be a cylinder. During use, the drive module 3 can drive the support cantilever 210 through the slot to position the cell loading position. The positioning slot can engage with the tail of the cell to fix the tail of the cell. During loading or unloading, the third driving member 6 can drive the positioning slot to move in the same direction as the avoidance component 220. This setting can position the cell and place it in a preset position on the cell placement platform 110, improving the welding quality and allowing processes including but not limited to laser pre-spot welding and contour gauge gap detection to begin on the welding fixture 1.

[0064] In some embodiments, the support cantilever 210 includes a plurality of support rods 211, with gaps between adjacent support rods 211. A placement slot 111 adapted to the plurality of support rods 211 is provided on the cell placement platform 110, through which the support rods 211 pass to place the cell on the cell placement platform 110. For example, the support cantilever 210 consists of two support rods 211, with gaps between them. Three fixing blocks are provided on the cell placement platform 110, vertically positioned on the platform, forming two placement slots 111 between them. During loading, the drive module 3 drives the support cantilever 210 through the placement slots 111, and the lifting module lowers the support cantilever 210. At this time, the cell is placed on the fixing blocks, completing the loading of the cell. This design simplifies the loading and unloading process, and the placement slots 111 also effectively position the loading location, preventing loading deviation.

[0065] Example 3

[0066] The difference between Example 3 and Example 1 is that the pre-spot welding mechanism for the battery cell has been further optimized in this example. See [link to example]. Figure 5-6 Furthermore, the welding fixture 1 also includes a hollow rotating platform 7, a fourth driving member, and a battery cell pressing assembly for pressing the battery cells. The fourth driving member is connected to the hollow rotating platform 7 to drive the hollow rotating platform 7 to rotate. The battery cell placement stage 110 is disposed inside the hollow rotating platform 7, and the battery cell pressing assembly is disposed at the end of the battery cell placement stage 110.

[0067] The fourth driving component is a rotary motor. The welding fixture 1 is set in the hollow rotary platform 7. The rotary motor drives the hollow rotary platform 7 to rotate, which in turn drives the welding fixture 1 to rotate, thereby completing the side welding process. The cell pressing assembly is used to fix the cell. It is set in the hollow rotary platform 7 and may include a pressing block and a cylinder. The cylinder drives the pressing block to move, thereby pressing the cell on the cell placement table 110 tightly, making it less likely to fall off during the welding process.

[0068] In some embodiments, such as Figure 7 As shown, the welding fixture 1 may further include a dust removal component 9, which may consist of a dust removal pipe 91, an electrical slip ring 92, and a dust removal hood 93. The dust removal hood 93 is connected and installed to the hollow rotating platform 7 of the welding fixture 1. The dust removal component 9 may also include a coaxial adjustment component 94, which is disposed between the electrical slip ring 92 and the welding fixture 1. This coaxial adjustment component 94 is used to adjust the position of the dust removal component 9, ensuring that it remains coaxial with the hollow rotating platform 7 and rotates coaxially with the welding fixture during the welding process of the battery cell, thus achieving continuous dust removal. Of course, other dust removal methods may also be used, and this application does not limit this to any particular method.

[0069] 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.

[0070] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0071] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0072] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0073] 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 cell pre-spot welding mechanism, characterized in that, include: A welding fixture includes a battery cell placement platform for placing battery cells, wherein a reference block for positioning the battery cells is provided on one side of the battery cell placement platform; A loading and unloading module is disposed on one side of the welding fixture. The loading and unloading module includes a support cantilever for placing the battery cell and a clearance assembly. as well as A drive module is located between the welding fixture and the loading / unloading module, and is used to drive the loading / unloading module to move toward or away from the welding fixture; The avoidance component is located between the support cantilever and the drive module, and is used to drive the support cantilever to shift in the direction away from the reference block.

2. The cell pre-spot welding mechanism according to claim 1, characterized in that, The loading and unloading module also includes a support base and a lifting module, wherein the lifting module is mounted on the support base; The driving end of the lifting module is connected to one end of the support cantilever to drive the support cantilever to rise and fall.

3. The cell pre-spot welding mechanism according to claim 2, characterized in that, The avoidance component is located between the support base and the drive end of the drive module.

4. The cell pre-spot welding mechanism according to any one of claims 2 or 3, characterized in that, The avoidance component includes a first driving member and a first guide member that cooperates with the first driving member; The first guide is arranged horizontally and perpendicular to the driving direction of the drive module.

5. The cell pre-spot welding mechanism according to claim 4, characterized in that, The first guide member is disposed on the drive end of the drive module; The avoidance component also includes a rod, one end of which is connected to the drive end of the drive module, and the other end of which passes through the support base; The movable end of the first guide member is connected to the support base, the first drive member is disposed on the support base, and the drive end of the first drive member is connected to the other end of the rod body, so that the first drive member can drive the support base to move along the first guide member.

6. The cell pre-spot welding mechanism according to claim 1, characterized in that, The support cantilever is equipped with a fixing component for fixing the battery cell.

7. The cell pre-spot welding mechanism according to claim 6, characterized in that, The fixing component includes a fixing element, a clamping element, and a second driving element; The fixing member is located at one end of the support cantilever facing the welding fixture, and the clamping member is located at the other end of the support cantilever opposite to the fixing member. The second driving member is connected to the clamping member in a transmission manner to drive the clamping member to move closer to or away from the fixing member.

8. The cell pre-spot welding mechanism according to claim 1, characterized in that, The cell placement platform is provided with a positioning component at one end near the loading and unloading module, and the positioning component has a slot adapted to the support cantilever. The cell placement platform is also provided with a third driving component, which is connected to the positioning component in a transmission manner; the positioning component is driven by the third driving component to push the support cantilever to move in the avoidance direction of the avoidance component.

9. The cell pre-spot welding mechanism according to claim 1, characterized in that, The supporting cantilever includes a plurality of supporting rods, with gaps between adjacent supporting rods; The battery cell placement platform has placement slots adapted to several of the support rods, and the support rods pass through the placement slots to place the battery cells on the battery cell placement platform.

10. The cell pre-spot welding mechanism according to claim 1, characterized in that, The welding fixture also includes a hollow rotating platform, a fourth driving component, and a battery cell pressing assembly for pressing the battery cells together. The fourth driving component is connected to the hollow rotating platform to drive the hollow rotating platform to rotate. The cell placement platform is disposed within the hollow rotating platform, and the cell pressing assembly is disposed at the end of the cell placement platform.

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