A module cell extrusion device

Abstract

This utility model discloses a module battery cell extrusion device, relating to the technical field of battery cell testing equipment. Specifically, it includes: a vertical fixing plate; a first fixing plate slidably connected to the working surface of the vertical fixing plate; a second fixing plate slidably connected to the working surface of the vertical fixing plate and disposed opposite to the first fixing plate, forming a clamping space for holding small module battery cells; a locking assembly connected to the first and second fixing plates, used to drive the first and second fixing plates to move closer or further apart to achieve clamping of the small module battery cells; and an extrusion assembly that extrudes the small module battery cells when they are clamped in the clamping space, the extrusion assembly being disposed opposite to the working surface of the vertical fixing plate. The aim is to ensure structural consistency and uniform force distribution of the testing device during the extrusion test of small module battery cells.

Description

Technical Field

[0001] This utility model relates to the technical field of battery cell testing equipment, and in particular to a module battery cell extrusion device. Background Technology

[0002] With the rapid development of the new energy vehicle industry, lithium-ion batteries, as its primary power source, are being widely used in electric vehicles, hybrid vehicles, and other fields. Lithium-ion batteries dominate the power battery market due to their advantages such as high energy density, long cycle life, high operating voltage, and no memory effect. However, extreme operating conditions such as collisions, drops, overcharging, over-discharging, and compression may occur during vehicle operation. Therefore, the safety performance of lithium-ion batteries has become one of the key factors affecting the overall performance of electric vehicles and the personal safety of users.

[0003] Crushing tests are a core testing component used to simulate the actual performance of batteries under strong external impacts, crushing, or compression, thereby assessing their thermal runaway tendency and the effectiveness of their protective structures. Currently, the industry commonly uses individual battery cells as the test object. The testing devices are mostly unidirectional crushing structures. The cell is placed in the testing device, and an external force is applied at a constant speed or constant pressure by a loading device. By recording phenomena such as temperature rise, smoke, fire, and explosion, the failure mode and safety level of the cell are determined.

[0004] However, in practical applications, it has been found that single-cell batteries exhibit a certain degree of randomness and uncertainty during X-direction (lateral) compression testing. For example, obvious thermal runaway phenomena may be observed in the initial test, but these failure behaviors cannot be reproduced in repeated tests, severely affecting the reliability of test results and the accurate determination of failure mechanisms. Especially during failure analysis, the lack of a stable and repeatable testing process makes it difficult to make scientifically reasonable inferences about the root causes of failure. Furthermore, the relatively simple structure of a single cell results in a significant difference in stress distribution compared to the module structure in real-world usage scenarios, making it difficult to comprehensively reflect the stress state and safety response of the battery pack under extreme conditions.

[0005] Therefore, an increasing number of research and engineering practices are shifting towards using small modules (i.e., basic units composed of several battery cells) for extrusion testing to more realistically simulate the mechanical response characteristics of battery cells in an assembled state. However, existing small module extrusion testing devices suffer from diverse module fixing structures and a lack of standardized design, leading to uneven distribution of external forces on the battery cells during testing, thus introducing additional errors. Furthermore, some testing platforms fail to achieve strict planar contact between the extrusion head and the module contact surface, easily resulting in localized stress concentration or angular loading, severely impacting the accuracy and repeatability of test results.

[0006] Therefore, ensuring the structural consistency of the testing device and the uniform force distribution during the extrusion test of small module cells has become a pressing technical challenge. Utility Model Content

[0007] The main purpose of this utility model is to provide a module cell extrusion device, which aims to ensure the structural consistency of the testing device and the uniform force distribution when extruding small module cells.

[0008] To achieve the above objectives, this utility model proposes a module cell extrusion device, comprising:

[0009] Vertical fixing plate;

[0010] The first fixing plate is slidably connected to the working surface of the vertical fixing plate;

[0011] The second fixing plate is slidably connected to the working surface of the vertical fixing plate and is arranged opposite to the first fixing plate to form a clamping space for clamping small module cells;

[0012] A locking assembly, connected to the first fixing plate and the second fixing plate, is used to drive the first fixing plate and the second fixing plate to move closer or further apart, thereby clamping the small module battery cell; and

[0013] The extrusion assembly is used to extrude the small module cell when it is clamped in the clamping space. The extrusion assembly is arranged opposite to the working surface of the vertical fixing plate.

[0014] In one embodiment of this application, the first fixing plate is provided with at least one first through hole; the second fixing plate is provided with second through holes corresponding one-to-one with the first through holes; the locking assembly includes:

[0015] The threaded rod passes sequentially through corresponding first and second through holes; and

[0016] A nut, threadedly connected to the threaded rod, is used to drive the first fixed plate and the second fixed plate closer to or further apart from each other.

[0017] In one embodiment of this application, at least one reinforcing plate is provided on the side of the first fixing plate and / or the second fixing plate away from the clamping space, and the reinforcing plate is provided with a third through hole through which the threaded rod can pass.

[0018] In one embodiment of this application, the reinforcing plate is U-shaped.

[0019] In one embodiment of this application, the vertical fixing plate is provided with at least two first guide slots, each of which is horizontally arranged and its starting point is on the same vertical line; the vertical fixing plate is provided with at least two second guide slots, each of which is horizontally arranged and its starting point is on the same vertical line;

[0020] Each of the first guide slots is slidably connected with a first fixing screw, and the first fixing screw is connected to the first fixing plate;

[0021] Each of the second guide slots is slidably connected with a second fixing screw, which is connected to the second fixing plate.

[0022] In one embodiment of this application, a base is also connected to the bottom of the vertical fixing plate.

[0023] In one embodiment of this application, the extrusion assembly includes an extrusion head, the extrusion head having a receiving groove for accommodating a portion of the cell terminals in a small module cell.

[0024] In one embodiment of this application, the extrusion assembly further includes: a mounting plate connected to the end of the extrusion head away from the small module cell.

[0025] In one embodiment of this application, the width of the receiving groove is greater than the diameter of the pole post.

[0026] In one embodiment of this application, the number of the first through holes is four, which are evenly distributed on the first fixing plate.

[0027] By adopting the above technical solution, the module cell extrusion device can achieve stable clamping and uniform extrusion of the cell, avoid displacement of the cell during the extrusion process, and improve the stability and consistency of the extrusion effect. By setting the extrusion force and extrusion stroke, it can be adapted to small module cells of different specifications, and has strong versatility and adaptability. At the same time, the device has a simple structure and is easy to maintain and operate. Attached Figure Description

[0028] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein:

[0029] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0030] Figure 2 for Figure 1 A schematic diagram of the exploded structure;

[0031] 10. Vertical fixing plate; 11. First guide groove; 12. Second guide groove; 13. Second fixing screw; 20. First fixing plate; 30. Second fixing plate; 40. Reinforcing plate; 51. Threaded rod; 52. Nut; 60. Base; 71. Extrusion head; 72. Mounting plate; 73. Receiving groove. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0033] like Figures 1 to 2 As shown, in order to achieve the above objectives, this utility model proposes a module cell extrusion device, comprising:

[0034] Vertical fixing plate 10;

[0035] The first fixing plate 20 is slidably connected to the working surface of the vertical fixing plate 10;

[0036] The second fixing plate 30 is slidably connected to the working surface of the vertical fixing plate 10 and is arranged opposite to the first fixing plate 20 to form a clamping space for clamping small module cells;

[0037] A locking assembly, connected to the first fixing plate 20 and the second fixing plate 30, is used to drive the first fixing plate 20 and the second fixing plate 30 to move closer or further apart, thereby clamping the small module battery cell; and

[0038] The extrusion assembly is used to extrude the small module battery cell when it is clamped in the clamping space. The extrusion assembly is arranged opposite to the working surface of the vertical fixing plate 10.

[0039] Specifically, the module cell extrusion device includes a vertical fixing plate 10, a first fixing plate 20, a second fixing plate 30, a locking assembly, and an extrusion assembly. The vertical fixing plate 10 is configured as a single plate structure, with one side serving as a working surface. Both the first fixing plate 20 and the second fixing plate 30 are slidably connected to this working surface. The sliding connection structure may include a linear guide rail and a slider assembly, or it may include a groove and a guide post structure. The linear guide rail is fixed to the working surface of the vertical fixing plate 10, and the slider assemblies are respectively installed on one side of the first fixing plate 20 and the second fixing plate 30, allowing the first fixing plate 20 and the second fixing plate 30 to slide symmetrically or unilaterally along the horizontal direction of the vertical fixing plate 10.

[0040] The first fixing plate 20 and the second fixing plate 30 are disposed opposite each other on the working surface of the vertical fixing plate 10, forming a variable clamping space between them. The clamping space is used to accommodate and clamp small module cells. The clamping surfaces of the first fixing plate 20 and the second fixing plate 30 are made of flat, hard metal.

[0041] The locking assembly is used to drive the first fixed plate 20 and the second fixed plate 30 to move relative to each other, thereby clamping or releasing the small module battery cell. The locking assembly can be a screw-nut 52 transmission assembly or an electric push rod structure. When the locking assembly is an electric push rod structure, the first electric push rod is connected to the first fixed plate 20, and the second electric push rod is connected to the second fixed plate 30. The movement of the first fixed plate 20 and the second fixed plate 30 is achieved by the extension and retraction of the electric push rods, thus completing the clamping or releasing operation of the small module battery cell.

[0042] The extrusion assembly is located on the opposite side of the working surface of the vertical fixing plate 10, specifically on the opposing structural surface in front of the vertical fixing plate 10. The extrusion assembly includes an extrusion head 71 for applying pressure and an extrusion drive mechanism for driving the extrusion head 71. The extrusion head 71 is a flat metal pressure head. The extrusion drive mechanism can be a cylinder or an electric push rod. When the extrusion assembly is working, the extrusion drive mechanism drives the extrusion head 71 to move in a direction perpendicular to the clamping direction, applying directional extrusion force to the small module battery cell within the clamping space, thereby achieving the extrusion of the battery cell.

[0043] During the operation of the module cell extrusion device, the operator first places the small module cell in the clamping space between the first fixed plate 20 and the second fixed plate 30, and activates the locking assembly to slide the first fixed plate 20 and the second fixed plate 30 inward, clamping the small module cell. After clamping, the extrusion assembly is activated, and the extrusion drive mechanism drives the extrusion head 71 towards the cell and applies pressure, causing the small module cell to be compressed. After extrusion, the extrusion assembly resets, and the locking assembly drives the first fixed plate 20 and the second fixed plate 30 away, releasing the small module cell and completing one work cycle. Throughout the process, the vertical fixed plate 10 plays a supporting and guiding role, ensuring the movement accuracy and structural stability of each component.

[0044] By adopting the above technical solution, the module cell extrusion device can achieve stable clamping and uniform extrusion of the cell, avoid displacement of the cell during the extrusion process, and improve the stability and consistency of the extrusion effect. By setting the extrusion force and extrusion stroke, it can be adapted to small module cells of different specifications, and has strong versatility and adaptability. At the same time, the device has a simple structure and is easy to maintain and operate.

[0045] In one embodiment of this application, the first fixing plate 20 is provided with at least one first through hole; the second fixing plate 30 is provided with second through holes corresponding one-to-one with the first through holes; the locking assembly includes:

[0046] Threaded rod 51, threaded rod 51 passes sequentially through corresponding first and second through holes; and

[0047] Nut 52 is threaded onto the threaded rod 51 and is used to drive the first fixing plate 20 and the second fixing plate 30 to move closer or further apart.

[0048] Specifically, the first fixing plate 20 has at least one first through hole, and the second fixing plate 30 has a second through hole corresponding to each of the first through holes. Each first through hole and its corresponding second through hole are arranged opposite to each other, forming a through-hole structure for the threaded rod 51 to pass through. The threaded rod 51 passes through a corresponding set of first and second through holes in sequence, with both ends extending outwards from the outer sides of the first fixing plate 20 and the second fixing plate 30. The threaded rod 51 is an integrally formed cylindrical metal rod with a threaded structure on its outer circumference, which matches the internal thread structure of the nut 52. The nut 52 is threadedly connected to either end of the threaded rod 51, preferably located in the outer region of the first fixing plate 20 and the second fixing plate 30. By rotating the nut 52, the nut 52 moves axially along the threaded rod 51, causing the first fixing plate 20 and the second fixing plate 30 to move closer or further apart.

[0049] When the nut 52 rotates and advances towards the center along the threaded rod 51, the first fixing plate 20 and the second fixing plate 30 move closer to each other, reducing the clamping space. When the nut 52 rotates outward and retracts along the threaded rod 51, the first fixing plate 20 and the second fixing plate 30 move in opposite directions (this can be done manually by pushing or pulling outward), increasing the clamping space. The engagement of the threaded rod 51 and the nut 52 is achieved through a mechanical helical transmission, ensuring synchronous movement and parallel clamping of the first fixing plate 20 and the second fixing plate 30, thereby ensuring the stability and reliability of the clamping force. The axes of the first and second through holes are aligned and coaxially arranged with the threaded rod 51, effectively preventing uneven clamping or device wear caused by misalignment during clamping.

[0050] Using the above technical solution, the first fixing plate 20 and the second fixing plate 30 form a stable mechanical connection structure through the threaded rod 51 and the nut 52. The clamping process does not require a complex power device. The clamping or releasing action can be achieved simply by rotating the nut 52. The structure is simple, the cost is low, and the clamping effect is stable and reliable. Multiple threaded rods 51 can achieve multi-point synchronous clamping, improve the clamping uniformity, and are suitable for small module cells of various sizes, thus enhancing the adaptability and practicality of the device.

[0051] In one embodiment of this application, at least one reinforcing plate 40 is provided on the side of the first fixing plate 20 and / or the second fixing plate 30 away from the clamping space, and the reinforcing plate 40 is provided with a third through hole through which the threaded rod 51 can pass.

[0052] Specifically, at least one reinforcing plate 40 is provided on the side of the first fixing plate 20 and the second fixing plate 30 away from the clamping space. The reinforcing plate 40 is installed on the back of the first fixing plate 20 and / or the second fixing plate 30 by welding, screw fixing, or integral casting. The reinforcing plate 40 is arranged parallel or perpendicular to the fixing plate to enhance the overall strength and structural rigidity of the first fixing plate 20 and the second fixing plate 30. The reinforcing plate 40 is provided with a third through hole through which the threaded rod 51 can pass. The number of third through holes corresponds to the number of first and second through holes, and they are axially aligned with the first and second through holes. The threaded rod 51 passes through the third through hole, the first through hole, and the second through hole in sequence to form a stable through-connection structure.

[0053] The diameter of the third through hole is tightly fitted with the outer diameter of the threaded rod 51, which can be a sliding fit or a clearance fit, to ensure the guiding accuracy and smooth assembly of the threaded rod 51 during the insertion process. The guide support provided by the third through hole by the reinforcing plate 40 can further improve the axial stability of the threaded rod 51 during the rotation drive of the nut 52, prevent the threaded rod 51 from shaking, deviating or bending under load, extend the service life of the device and improve the clamping accuracy.

[0054] By adopting the above technical solution, the setting of the reinforcing plate 40 improves the rigidity of the first fixing plate 20 and the second fixing plate 30 under stress, and avoids unstable clamping or structural damage caused by plate deformation during clamping or release; the setting of the third through hole enhances the guiding and positioning function of the threaded rod 51, which helps to maintain the linear motion path of the threaded rod 51 under high load, thereby achieving high-precision clamping control and improving the structural stability and reliability of the entire device.

[0055] In one embodiment of this application, the reinforcing plate 40 is U-shaped.

[0056] Specifically, the reinforcing plate 40 is U-shaped and includes two parallel sidewalls and a base plate connecting the two sidewalls. The two sidewalls and the base plate together form a U-shaped structure with openings facing opposite directions to the clamping space. The U-shaped reinforcing plate 40 is installed on the side of the first fixing plate 20 and / or the second fixing plate 30 away from the clamping space by welding, screws, or integral processing. The two sidewalls are respectively in close contact with the sides of the fixing plates, and the base plate covers the back of the fixing plates, forming a reinforcing rib-like covering structure with the fixing plates.

[0057] The base plate of the U-shaped reinforcing plate 40 has a third through hole through which the threaded rod 51 can pass. The third through hole is located at the center of the base plate of the U-shaped structure and is coaxially arranged with the first and second through holes in the axial direction, so that the threaded rod 51 passes through the third through hole, the first through hole, and the second through hole in sequence, forming an axially stable guide support system. Due to the good structural stability and bending rigidity of the U-shaped structure, the U-shaped reinforcing plate 40 provides multi-faceted support under the stress state of the threaded rod 51, effectively limiting the deformation and torsion of the fixing plate and improving the reliability of the overall clamping structure.

[0058] By adopting the above technical solution, the U-shaped reinforcing plate 40 significantly enhances the bending resistance and structural strength of the first fixing plate 20 and the second fixing plate 30 without significantly increasing the structural size, so that the device can still maintain good deformation control when subjected to large clamping force during use. At the same time, the third through hole on the U-shaped reinforcing plate 40 provides multi-faceted support and high-precision guidance for the threaded rod 51, improving the transmission stability and service life of the threaded rod 51, thereby enhancing the overall accuracy and reliability of the small module cell clamping process.

[0059] In one embodiment of this application, the vertical fixing plate 10 is provided with at least two first guide slots 11, each of the first guide slots 11 being horizontally arranged and having its starting point on the same vertical line; the vertical fixing plate 10 is provided with at least two second guide slots 12, each of the second guide slots 12 being horizontally arranged and having its starting point on the same vertical line;

[0060] Each of the first guide slots 11 is slidably connected with a first fixing screw, and the first fixing screw is connected to the first fixing plate 20;

[0061] Each of the second guide slots 12 is slidably connected with a second fixing screw 13, and the second fixing screw 13 is connected to the second fixing plate 30.

[0062] Specifically, the vertical fixing plate 10 is provided with at least two first guide slots 11 and at least two second guide slots 12. Each first guide slot 11 extends horizontally, and the starting point of all first guide slots 11 is on the same vertical line. The second guide slots 12 also extend horizontally, and the starting point of all second guide slots 12 is also on another vertical line. The width of the first guide slots 11 and the second guide slots 12 matches the diameter of the screws of the first fixing screw and the second fixing screw 13. To achieve a sliding fit, the length direction of the guide slots is consistent with the sliding direction of the first fixing plate 20 and the second fixing plate 30.

[0063] Each of the first guide slots 11 is slidably connected to a first fixing screw. The screw shank passes through the first guide slot 11, with one end fixedly connected to the first fixing plate 20 and the other end equipped with a fastening structure, such as a nut 52 or a screw cap, for limiting and clamping. Similarly, each of the second guide slots 12 is slidably connected to a second fixing screw 13. The screw shank of the second fixing screw 13 passes through the second guide slot 12, with one end fixedly connected to the second fixing plate 30 and the other end also equipped with a fastening structure. Through the sliding connection of the first fixing screws and the second fixing screws 13, the first fixing plate 20 and the second fixing plate 30 can slide along the direction of their respective guide slots on the working surface of the vertical fixing plate 10, thereby achieving position adjustment.

[0064] The first guide groove 11 and the second guide groove 12 provide a clear guide path for the first fixed plate 20 and the second fixed plate 30 during sliding, effectively preventing the plates from shifting, tilting, or shaking during movement. The first fixing screw and the second fixing screw 13 provide a reliable mechanical connection while allowing a linear movement trajectory to be maintained during clamping or releasing, ensuring clamping accuracy and stability.

[0065] By adopting the above technical solution, by setting multiple horizontal guide slots and using sliding connection fixing screws, the first fixing plate 20 and the second fixing plate 30 can be smoothly and controllably slid on the vertical fixing plate 10. The guide slots play a role in precise positioning and trajectory control, ensuring the linearity and synchronization of the clamping action, and improving the stability, reliability and overall operation precision control capability of the clamping mechanism.

[0066] In one embodiment of this application, a base 60 is also connected to the bottom of the vertical fixing plate 10.

[0067] Specifically, a base 60 is connected to the bottom of the vertical fixing plate 10. The base 60 is a horizontally extending structural component that is vertically connected to the vertical fixing plate 10, forming a stable L-shaped support structure. The base 60 and the vertical fixing plate 10 are connected by welding, screw fixing, or plug-in structure. Different structural forms can be selected according to the strength of use and disassembly requirements. The planar dimension of the base 60 is greater than or equal to the width of the vertical fixing plate 10 to provide sufficient support area and prevent the device from tipping over or moving during use.

[0068] The base 60 can be equipped with multiple anti-slip pads, bolt mounting holes, or magnetic structures on its bottom surface to facilitate stable installation on different operating platforms. The base 60 can be made of high-strength materials such as steel plate, cast iron, or aluminum alloy, possessing good load-bearing capacity and vibration resistance, thus providing reliable structural support for the entire clamping and extrusion process.

[0069] By adopting the above technical solution, the base 60 and the vertical fixing plate 10 form a stable connection, which effectively improves the structural stability and anti-overturning ability of the entire module cell extrusion device, ensuring that the device can maintain a stable state during the clamping or extrusion of small module cells, and improving operational safety.

[0070] In one embodiment of this application, the extrusion assembly includes an extrusion head 71, which has a receiving groove 73 for accommodating a portion of the cell terminals in a small module cell.

[0071] Specifically, the extrusion assembly includes an extrusion head 71, which is positioned on the opposite side of the working surface of the vertical fixed plate 10 and is driven by an extrusion drive structure to achieve reciprocating motion towards the clamping space. The extrusion head 71 has a planar block structure and can be made of hard alloy, steel, or a composite structure covered with elastic buffer material to adapt to different strength and clamping requirements. The extrusion head 71 is provided with a receiving groove 73 for accommodating some of the cell terminals in the small module cell. The receiving groove 73 has a recessed structure and its opening faces the clamping space formed by the first fixed plate 20 and the second fixed plate 30.

[0072] The shape and size of the receiving groove 73 are designed to match the external specifications of the battery cell terminals, and can be a long strip, a rectangular groove, or multiple independent cylindrical recesses. This facilitates the fixing of the battery cell.

[0073] The extrusion head 71 moves vertically under the drive of the extrusion drive structure. After the small module cell is clamped and positioned by the first fixing plate 20 and the second fixing plate 30, the extrusion head 71 directionally presses it. Due to the setting of the receiving groove 73, the terminal post in the small module cell is naturally embedded in the groove during the extrusion process, thereby preventing the cell from coming out of the extruded part.

[0074] By adopting the above technical solution, the extrusion assembly realizes safe and uniform extrusion operation of small module cells through the extrusion head 71 with accommodating groove 73, which not only improves the reliability of the extrusion process.

[0075] In one embodiment of this application, the extrusion assembly further includes: a mounting plate 72 connected to one end of the extrusion head 71 away from the small module cell.

[0076] Specifically, the extrusion assembly also includes a mounting plate 72, which is connected to the end of the extrusion head 71 away from the small module cell. The mounting plate 72 has a flat plate structure, and its shape and size match the extrusion head 71, serving as a connecting transition component between the extrusion head 71 and the extrusion drive structure. The back of the extrusion head 71 is firmly connected to the lower surface of the mounting plate 72 by screws, welding, or guide rail insertion, so that the extrusion head 71 can remain relatively fixed to the mounting plate 72 during the process of being stressed, preventing it from detaching or shifting due to pressure.

[0077] The upper surface of the mounting plate 72 is connected to an extrusion drive structure, such as an electric push rod, cylinder, or lead screw drive device. Under the action of the extrusion drive structure, the mounting plate 72 drives the extrusion head 71 to move in a vertical direction or in a direction perpendicular to the vertical fixed plate 10, thereby causing the extrusion head 71 to apply pressure to the small module battery cell clamped between the first fixed plate 20 and the second fixed plate 30. The mounting plate 72 not only achieves a rigid connection between the extrusion head 71 and the drive structure, but also ensures the stability of the extrusion process and the uniformity of pressure transmission through its structural strength.

[0078] By adopting the above technical solution, the mounting plate 72 serves as a connector between the extrusion head 71 and the extrusion drive structure. While ensuring the precise movement of the extrusion head 71, it effectively bears and disperses the reaction force generated during the extrusion process, thereby improving the overall structural stability and operational reliability of the extrusion assembly and ensuring the safety and consistency of the small module cells during the extrusion process.

[0079] In one embodiment of this application, the width of the receiving groove 73 is greater than the diameter of the pole post.

[0080] Specifically, the receiving groove 73 is disposed on the side surface of the extrusion head 71 facing the clamping space. The width of the receiving groove 73 is greater than the diameter of the terminal post in the small module cell, and the length and depth of the receiving groove 73 are also reasonably designed according to the size and position of the terminal post. The receiving groove 73 can be a single strip groove structure or multiple separate circular or elliptical recess structures to accommodate different layouts and numbers of terminal posts. Since the width of the receiving groove 73 is greater than the diameter of the terminal post, after the small module cell is placed in the clamping space and clamped, the terminal post on the cell can naturally embed into the receiving groove 73 to achieve positioning.

[0081] By adopting the above technical solution, the width of the receiving groove 73 is greater than the diameter of the electrode post, which effectively achieves the limitation of the cell during the extrusion process.

[0082] In one embodiment of this application, the number of the first through holes is four, which are evenly distributed on the first fixing plate 20.

[0083] Specifically, the first fixing plate 20 is provided with four first through holes, which are evenly distributed on the first fixing plate 20. Specifically, the four first through holes are located at the four corners or near-corner areas of the first fixing plate 20, arranged in a rectangular or square manner. Each first through hole corresponds one-to-one with the second through hole on the second fixing plate 30 and the third through hole on the reinforcing plate 40, and are coaxially arranged in the working direction of the vertical fixing plate 10, so that the threaded rod 51 can pass through the third through hole, the first through hole, and the second through hole in sequence, forming a complete locking transmission path.

[0084] The even distribution of the four first through holes enables the threaded rod 51 and the nut 52 to be arranged at four points on the first fixed plate 20. This allows the nut 52 to apply a balanced clamping force to the first fixed plate 20 during rotation, ensuring that the first fixed plate 20 maintains a stable movement trajectory during clamping or releasing. This effectively prevents the plate from shifting, tilting, or lifting, and ensures the symmetry of the clamping action and the uniformity of the clamping force.

[0085] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A module cell extrusion device, characterized in that, include: Vertical fixing plate; The first fixing plate is slidably connected to the working surface of the vertical fixing plate; The second fixing plate is slidably connected to the working surface of the vertical fixing plate and is arranged opposite to the first fixing plate to form a clamping space for clamping small module cells; A locking assembly, connected to the first fixing plate and the second fixing plate, is used to drive the first fixing plate and the second fixing plate to move closer or further apart to clamp the small module cell. as well as The extrusion assembly is used to extrude the small module cell when it is clamped in the clamping space. The extrusion assembly is arranged opposite to the working surface of the vertical fixing plate.

2. The module cell extrusion device as described in claim 1, characterized in that, The first fixing plate is provided with at least one first through hole; the second fixing plate is provided with second through holes corresponding one-to-one with the first through holes; the locking assembly includes: The threaded rod passes sequentially through corresponding first and second through holes; and A nut, threadedly connected to the threaded rod, is used to drive the first fixed plate and the second fixed plate closer to or further apart from each other.

3. The module cell extrusion device as described in claim 2, characterized in that, At least one reinforcing plate is provided on the side of the first fixing plate and / or the second fixing plate away from the clamping space, and the reinforcing plate is provided with a third through hole through which the threaded rod can pass.

4. The module cell extrusion device as described in claim 3, characterized in that, The reinforcing plate is U-shaped.

5. The module cell extrusion device as described in claim 1, characterized in that, The vertical fixing plate is provided with at least two first guide slots, each of which is horizontally arranged and its starting point is on the same vertical line; the vertical fixing plate is provided with at least two second guide slots, each of which is horizontally arranged and its starting point is on the same vertical line. Each of the first guide slots is slidably connected with a first fixing screw, and the first fixing screw is connected to the first fixing plate; Each of the second guide slots is slidably connected with a second fixing screw, which is connected to the second fixing plate.

6. The module cell extrusion device as described in claim 1, characterized in that, The bottom of the vertical fixing plate is also connected to a base.

7. The module cell extrusion device as described in claim 1, characterized in that, The extrusion assembly includes an extrusion head, which has a receiving groove for accommodating a portion of the cell terminals in the small module cell.

8. The module cell extrusion device as described in claim 7, characterized in that, The extrusion assembly further includes a mounting plate connected to the end of the extrusion head away from the small module cell.

9. The module cell extrusion device as described in claim 7, characterized in that, The width of the receiving groove is greater than the diameter of the pole post.

10. The module cell extrusion device as described in claim 2, characterized in that, The number of the first through holes is four, and they are evenly distributed on the first fixed plate.

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