Formation jig and formation device

Abstract

The embodiment of the present application discloses a formation clamp and a formation device. The formation clamp comprises a base, a plurality of clamping assemblies arranged on the base in a first direction, each clamping assembly comprising a moving piece movably arranged on the base in a second direction and a clamping plate movably arranged on the base in the first direction and arranged on at least one side of the moving piece in the first direction, the moving piece being configured to drive the clamping plate to move in the first direction when moving in the second direction, so that the clamping plate cooperates with the clamping plate of the adjacent clamping assembly to clamp a battery monomer, at least one clamping cavity is formed on the base, the clamping cavity is provided with the clamping assembly on both sides in the first direction, a first guide groove is arranged on the side wall of the clamping cavity in the first direction, and the clamping plate is movably arranged in the first guide groove in the first direction. According to the formation clamp provided by the present application, the problem of uncontrollable product quality fluctuation is effectively solved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a formation fixture and a formation apparatus. Background Technology

[0002] In the production and processing of power batteries, formation is a crucial step in battery manufacturing, significantly impacting the battery's normal use and performance stability. Cell formation involves clamping the cells with clamping plates and then transferring them to the formation station for processing. However, current technology primarily uses a combination of fixed components and moving plates for cell clamping. This combination is typically unilaterally movable, causing the cell's position to shift during expansion. This results in the cell opening not being perfectly aligned with the equipment's positioning holes during processing. To address this issue, a solution using airbags on both sides has been adopted. While this effectively prevents cell position shifting, the airbags are prone to leakage, requiring regular maintenance and protection. This increases labor costs and introduces uncontrollable product quality issues. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a formation fixture that can effectively overcome the defects of existing single-sided clamping structures, such as one-sided cell misalignment and misalignment between the cell opening and the equipment positioning hole; and effectively eliminate the risk of airbag leakage and the need for periodic maintenance, thus solving the problem of uncontrollable product quality fluctuations.

[0004] This application also proposes a formation apparatus having the above-mentioned formation fixture.

[0005] In a first aspect, embodiments of this application provide a formation fixture, comprising: a base; and a plurality of clamping assemblies, the plurality of clamping assemblies being spaced apart on the base along a first direction, each clamping assembly comprising: a movable member and a clamping plate, the movable member being movably disposed on the base along a second direction, the clamping plate being movably disposed on the base along the first direction and disposed on at least one side of the movable member in the first direction, the movable member being configured to drive the clamping plate to move along the first direction when moving along the second direction, so that the clamping plate cooperates with the clamping plates of adjacent clamping assemblies to clamp a battery cell, the first direction and the second direction intersecting, at least one clamping cavity being formed on the base, clamping assemblies being disposed on both sides of the clamping cavity in the first direction, a first guide groove being provided on the sidewall of the clamping cavity in the first direction, and the clamping plate being movably disposed in the first guide groove along the first direction.

[0006] In the above technical solution, by setting up a moving part and a clamping plate, the spacing between adjacent clamping components can be flexibly adjusted, enabling the formation fixture to adapt to battery cells of different thicknesses and sizes, and to have the ability to freely adjust the restraint stroke. This improves the versatility of the formation fixture, thereby effectively reducing the frequency of tooling changes and reducing the cost of line modification. At the same time, since the clamping plate is movable along the first direction, it can achieve uniform force on both sides of the battery cell and bidirectional floating limit, thereby effectively overcoming the defects of existing single-sided clamping structures that are prone to single-sided cell offset and misalignment between the cell opening and the equipment positioning hole. Furthermore, since this solution uses mechanical clamping instead of airbag compression, it can effectively eliminate the risk of airbag leakage and the need for periodic maintenance. Compared with the airbag compression solution, mechanical clamping provides constant and controllable clamping pressure, thus effectively solving the problem of uncontrollable product quality fluctuations. By setting the first guide groove, the movement trajectory of the clamping plate can be limited, thereby effectively preventing the clamping plate from deviating during its movement in the first direction. This improves the straightness of the clamping plate during movement and reduces uneven force on battery cells or mechanical jamming during clamping caused by trajectory deviation.

[0007] In some embodiments, in a first direction, the side surface of the moving member facing the clamping plate is formed as a first inclined surface, the first inclined surface is inclined relative to the first direction and the second direction, the side surface of the clamping plate facing the moving member is formed as a second inclined surface, the first inclined surface and the second inclined surface are in contact, and the moving member pushes the clamping plate to move through the first inclined surface and the second inclined surface.

[0008] In the above technical solution, the moving component pushes the clamping plate to move via the first and second inclined surfaces. It can be understood that the transmission relationship between the moving component and the clamping plate is a rigid transmission. This ensures that the clamping plate will not retract when it reaches the set position and stops clamping, thereby meeting the constraint requirements of the cell in processes such as formation. At the same time, the setting of the first and second inclined surfaces also allows the moving component and the clamping plate to squeeze each other. Therefore, when the volume of the battery cell changes during the formation and charging / discharging process, the clamping plate can also drive the moving component to move in the opposite direction. This allows the clamping assembly to adapt to the volume change of the battery cell, thereby preventing damage to the battery cell caused by stress concentration.

[0009] In some embodiments, the clamping plate is movable along a first direction between a storage position and a clamping position. In the clamping position, a portion of the clamping plate extends into the clamping cavity, and in the storage position, the clamping plate is stored in a first guide groove.

[0010] In the above technical solution, when in the clamping position, part of the clamping plate extends into the clamping cavity, and when in the storage position, the clamping plate is stored in the first guide groove. This means that the size of the clamping cavity is larger than the size of the battery cell. This facilitates the insertion and removal of the battery cell and helps to improve the rate of the battery cell formation process.

[0011] In some embodiments, a second guide groove extending in a second direction is formed on the base, and the moving member is movably arranged in the second guide groove in the second direction.

[0012] In the above technical solution, by setting a second guide groove, the moving direction of the moving part can be restricted, the moving accuracy of the moving part can be improved, and thus the clamping force accuracy of the clamping assembly can be improved.

[0013] In some embodiments, a connecting hole extending in the second direction is formed on one side of the base, and the moving part includes a moving body and a handle, one end of the handle being connected to the moving body and the other end extending out of the base through the connecting hole.

[0014] In the above technical solution, by setting a handle, a convenient force application point can be provided for the movement of the moving part, so that the moving part does not need to add a driving part and can only move along the second direction, thereby reducing the production difficulty of the entire clamping assembly and thus reducing the production cost of the entire forming fixture.

[0015] In some embodiments, the clamping plate is movable between a storage position and a clamping position along a first direction. In two adjacent clamping assemblies, when both clamping plates of the two clamping assemblies are in the clamping position, the two clamping plates cooperate to clamp the battery cell. When at least one clamping plate of the two adjacent clamping assemblies is in the storage position, the clamping plate is adapted to separate from the battery cell. The moving member is movable between a first position and a second position along a second direction. When the moving member moves from the first position to the second position, it pushes the clamping plate from the storage position to the clamping position. A first locking portion is formed on the moving member, and a second locking portion is formed on the base. When the moving member is in the second position, the first locking portion and the second locking portion lock into each other.

[0016] In the above technical solution, by setting the first locking part and the second locking part, the moving part can be locked when the clamping plate is in the clamping position, that is, the clamping plate can be kept in the clamping position without moving, which is beneficial to the docking of the negative pressure suction nozzle and the liquid injection hole, thereby improving the reliability of the battery cell formation process.

[0017] In some embodiments, a first locking part is provided on the handle.

[0018] In the above technical solution, by setting the first locking part on the handle, the locking can be made visible, thereby improving the clamping accuracy of the mortise clamp.

[0019] In some embodiments, the clamping assembly further includes a drive motor and a screw, the screw extending along a second direction, one end of the screw being threadedly connected to a movable member, and the other end being connected to the drive motor, the drive motor driving the screw to rotate so as to move the movable member along the second direction.

[0020] In the above technical solution, by setting a drive motor and a screw, precise adjustment of the linear displacement and feeding process of the moving part can be achieved, thereby improving the precise control of the clamping force of the clamping assembly. This allows the clamping assembly to not only clamp the battery cell but also reduce the occurrence of crush damage, thus improving the production reliability of the battery cell. At the same time, since the cooperation between the drive motor and the screw has reliable self-locking characteristics, setting a drive motor and a screw can also effectively prevent the moving part from slipping in the opposite direction, thereby improving the stability of the clamping assembly in the clamping state.

[0021] In some embodiments, the plurality of clamping assemblies includes: two first clamping assemblies, each of the two first clamping assemblies including a movable member and a clamping plate, and the clamping plates of the two first clamping assemblies being arranged facing each other in a first direction; and / or, At least one second clamping assembly, the second clamping assembly including a movable member and two clamping plates, the two clamping plates being arranged on both sides of the movable member in a first direction.

[0022] In the above technical solution, by setting multiple clamping components including two first clamping components and / or at least one second clamping component, the formation fixture of this embodiment can be designed according to the actual situation, thereby improving the adaptability of the formation fixture.

[0023] In some embodiments, the clamping assembly further includes a cushioning pad disposed on the side of the clamping plate opposite to the moving member.

[0024] In the above technical solution, by setting a buffer pad, the hard contact between the clamping plate and the battery cell can be effectively reduced, thereby reducing the damage to the battery cell caused by the clamping assembly during the clamping process. In addition, the buffer pad can also increase the friction between the clamping assembly and the large surface of the battery cell, thereby preventing the clamping plate from slipping when clamping the battery cell, thus improving the clamping stability of the clamping assembly on the battery cell, and enabling the clamping assembly to apply a fixed pressure to the large surface of the battery cell, thereby effectively improving the interface process of processes such as cell formation.

[0025] In some embodiments, the clamping assembly further includes adjustment pads disposed on the side of the clamping plate opposite to the moving member, the number of adjustment pads being adjustable, or the thickness of the adjustment pads being adjustable in a first direction.

[0026] In the above technical solution, by setting an adjustment pad, the formation fixture can be adapted to battery cells of different thicknesses and sizes, thereby effectively improving the versatility of the formation fixture, thereby effectively increasing the utilization rate of the base, reducing the replacement frequency of the entire fixture, and reducing the cost of modifying the production line.

[0027] Secondly, embodiments of this application also provide a formation apparatus, including a formation fixture according to the first aspect.

[0028] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a chemical formation fixture according to an embodiment of this application; Figure 2 This is a schematic diagram of the chemical formation fixture according to an embodiment of this application from another angle; Figure 3 It is along Figure 2 The cross-sectional view of line AA shown; Figure 4 This is a partial schematic diagram of a chemical formation fixture according to an embodiment of this application; Figure 5 This is a schematic diagram showing the connection between the moving part and the clamping plate; Figure 6 This is a schematic diagram of a formation fixture according to another embodiment of this application.

[0030] Figure label: 100. Formation fixture; 10. Base; 11. Clamping cavity; 12. First guide groove; 13. Connecting hole; 14. Second guide groove; 20. Clamping assembly; 21. Moving part; 211. Handle; 212. Moving body; 22. Clamping plate; 23. Screw; 24. Clamping clamp; X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0031] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0033] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0036] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[0037] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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 the embodiments of this application 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 the embodiments of this application.

[0038] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0039] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of power battery applications, market demand is also constantly increasing. This increased demand has led to a rapid growth in battery warehousing and logistics transportation.

[0040] In the production and processing of power batteries, formation is a crucial step in battery manufacturing, significantly impacting the battery's normal use and performance stability. Cell formation involves clamping the cells with clamping plates and then transferring them to the formation station for processing. However, current technology primarily uses a combination of fixed components and moving plates for cell clamping. This combination is typically unilaterally movable, causing the cell's position to shift during expansion. This results in the cell opening not being perfectly aligned with the equipment's positioning holes during processing. To address this issue, a solution using airbags on both sides has been adopted. While this effectively prevents cell position shifting, the airbags are prone to leakage, requiring regular maintenance and protection. This increases labor costs and introduces uncontrollable product quality issues.

[0041] Based on the above considerations, in order to solve the problems of air leakage in airbags, the need for regular maintenance and protection, and the uncontrollable product quality, embodiments of this application provide a formation fixture. The formation fixture includes a base and a plurality of clamping components. The plurality of clamping components are spaced apart on the base along a first direction. Each clamping component includes a movable member and a clamping plate. The movable member is movably disposed on the base along a second direction. The clamping plate is movably disposed on the base along the first direction and is disposed on at least one side of the movable member in the first direction. The movable member is configured to drive the clamping plate to move along the first direction when moving along the second direction, so that the clamping plate cooperates with the clamping plates of adjacent clamping components to clamp the battery cell. Since the clamping plates can move along the first direction and the battery cells are clamped between the clamping plates of two adjacent clamping components, this not only improves the uniformity of force on both sides of the battery cell, but also allows the clamping plates on both sides to synchronously and adaptively float and compensate when the battery cell expands or contracts during charging and discharging. This effectively overcomes the defects of existing single-sided clamping structures, such as single-sided cell offset and misalignment between the cell opening and the equipment positioning hole. In addition, since this solution uses mechanical clamping instead of airbag pressing, it can effectively eliminate the risk of airbag leakage and the need for periodic maintenance. Moreover, compared with the airbag pressing solution, the clamping pressure of mechanical clamping is constant and controllable, which can effectively solve the problem of uncontrollable product quality fluctuations.

[0042] The following is for reference. Figures 1-6 A battery system according to an embodiment of the first aspect of this application is described. Figure 1 This is a schematic diagram of a chemical formation fixture 100 according to an embodiment of this application; Figure 2 This is a schematic diagram of the chemical formation fixture 100 according to an embodiment of this application from another angle; Figure 3 It is along Figure 2 The cross-sectional view of line AA shown; Figure 4 This is a partial schematic diagram of the chemical formation fixture 100 according to an embodiment of this application; Figure 5 This is a schematic diagram showing the connection between the movable component 21 and the clamping plate 22; Figure 6 This is a schematic diagram of a formation fixture 100 according to another embodiment of this application.

[0043] An embodiment of this application provides a formation fixture 100, with reference to... Figure 1 The forming fixture 100 includes: a base 10 and a plurality of clamping components 20.

[0044] Specifically, the base 10 is mainly used to support the battery cells and provide installation space for the clamping assembly 20; the clamping assembly 20 is mainly used to clamp the battery cells and make them stable on the base 10.

[0045] For example, refer to Figure 1 and Figure 4The base 10 is formed as a rectangular frame, and multiple clamping cavities 11 are formed within the base 10 at intervals along the first direction X. Each clamping cavity 11 has an opening on one side in the third direction Z, primarily for placing battery cells. Both sidewalls of the clamping cavity 11 in the first direction X have mounting grooves. The clamping assembly 20 is arranged within the mounting grooves to clamp the battery cells arranged within the clamping cavities 11. It should be noted that the first direction X is the thickness direction of the battery cell, the second direction Y is the height direction of the battery cell, and the third direction Z is the length direction of the battery cell. In other words, the clamping plate 22 of the clamping assembly 20 contacts the two large surfaces of the battery cell to achieve clamping of the battery cell.

[0046] Multiple clamping assemblies 20 are spaced apart on the base 10 along a first direction X. Each clamping assembly 20 includes a movable member 21 and a clamping plate 22. The movable member 21 is movably disposed on the base 10 along a second direction Y. The clamping plate 22 is movably disposed on the base 10 along the first direction X and is disposed on at least one side of the movable member 21 in the first direction X. The movable member 21 is configured to drive the clamping plate 22 to move along the first direction X when moving along the second direction Y, so that the clamping plate 22 cooperates with the clamping plate 22 of the adjacent clamping assembly 20 to clamp the battery cell. The first direction X and the second direction Y intersect.

[0047] The phrase "the clamping plate 22 is movably disposed on the base 10 along the first direction X and arranged on at least one side of the moving member 21 in the first direction X" is intended to illustrate that the clamping plate 22 can be arranged on one side of the moving member 21 in the first direction X, or the clamping plate 22 can be arranged on both sides of the moving member 21 in the first direction X.

[0048] "The movable member 21 is configured to drive the clamping plate 22 to move along the first direction X when moving along the second direction Y, so that the clamping plate 22 cooperates with the clamping plate 22 of the adjacent clamping assembly 20 to clamp the battery cell." It can be understood that when the movable member 21 moves along the second direction Y, the movable member 21 will apply a force to the clamping plate 22, and the clamping plate 22 will move along the first direction X under the action of the force to achieve clamping of the battery cell.

[0049] Furthermore, since the forces act in opposite directions, when the clamping plate 22 is subjected to the squeezing force from the battery cell, the squeezing force is synchronously transmitted to the moving member 21. The moving member 21 is movable along the second direction Y. Thus, when the battery cell generates excessive reverse squeezing force due to its own expansion effect, the moving member 21 can make corresponding yielding or adaptive displacement in the second direction Y, thereby absorbing and buffering this excess stress. In this way, it can effectively prevent excessive squeezing force from causing damage or deformation to the battery cell.

[0050] It should be noted that the clamping parts of two adjacent clamping components 20 will move synchronously. This ensures that the clamping force is always applied evenly and symmetrically to both sides of the battery cell, so that the battery cell is always located in the preset center position during the clamping process. This effectively prevents battery displacement, tilting or uneven force caused by unilateral force or asynchronous clamping, thereby effectively improving the clamping stability of the battery cell and reducing the probability of damage to the battery cell caused by local stress concentration.

[0051] In existing technologies, the clamping of battery cells during the formation process mainly relies on the cooperation of a fixed component and a moving plate. This cooperation is generally movable on one side, which causes the position of the battery cell to shift when it expands. Consequently, the opening position of the cell cannot be perfectly aligned with the positioning hole of the equipment during the processing. To solve the above problems, a solution with airbags on both sides is currently used. This solution can effectively prevent the cell position from shifting. However, the airbags are prone to leakage and require regular maintenance and protection, which increases labor costs and makes product quality uncontrollable.

[0052] In this embodiment, the battery cell is clamped between the clamping plates 22 of two adjacent clamping components 20, and both clamping plates 22 can move along the first direction X. This not only enables uniform force on the large surface of the battery cell on both sides, but also allows the clamping plates 22 on both sides to synchronously and adaptively float and compensate when the battery cell expands or contracts during charging and discharging. This effectively overcomes the defects of existing single-sided clamping structures, such as single-sided cell offset and misalignment between the cell opening and the equipment positioning hole.

[0053] Meanwhile, this embodiment relies on the mechanical linkage between the moving part 21 and the clamping plate 22 to achieve all clamping actions, eliminating the need for an additional inflation air circuit, sealing airbag, and corresponding leak detection and air replenishment maintenance mechanism. In other words, this embodiment does not have the potential for failure such as airbag leakage or clamping pressure attenuation, which can significantly reduce the manual maintenance time for daily inspection, replacement, and air replenishment, thereby reducing labor costs. Furthermore, the clamping pressure of this embodiment is stably output by the rigid mechanical structure, with no attenuation or fluctuation in clamping force throughout the process. The cell positioning is consistent and the clamping state is controllable, which can eliminate the product quality instability caused by differences in airbag performance, thereby effectively improving the yield of finished products after battery formation.

[0054] Reference Figures 1-3 At least one clamping cavity 11 is formed on the base 10. Clamping assemblies 20 are provided on both sides of the clamping cavity 11 in the first direction X. A first guide groove 12 is provided on the side wall of the clamping cavity 11 in the first direction X. The clamping plate 22 is movably arranged in the first guide groove 12 along the first direction X.

[0055] For example, refer to Figure 1The base 10 has a plurality of partitions arranged at intervals along the first direction X. A clamping cavity 11 is defined between two partitions. Each partition has a through hole that runs through the partition along the first direction X. The moving member 21 and the clamping plate 22 are both arranged in the through hole. The inner wall of the through hole can limit the movement of the clamping plate 22.

[0056] In the above technical solution, by setting the movable component 21 and the clamping plate 22, the spacing between adjacent clamping components 20 can be flexibly adjusted, enabling the formation fixture 100 to adapt to battery cells of different thicknesses and sizes, and possessing the ability to freely adjust the restraint stroke. This improves the versatility of the formation fixture 100, thereby effectively reducing the frequency of tooling changes and reducing the cost of line modification. Simultaneously, since the clamping plate 22 is movable along the first direction X, it can achieve uniform force distribution on both sides of the battery cell and bidirectional floating limit, effectively overcoming the problems of single-sided cell offset and misalignment between the cell opening and the equipment positioning hole that are common in existing single-sided clamping structures. Defects; In addition, since this solution uses mechanical clamping instead of airbag compression, it can effectively eliminate the risk of airbag leakage and the need for periodic maintenance. Moreover, compared with the airbag compression solution, the clamping pressure of mechanical clamping is constant and controllable, which can effectively solve the problem of uncontrollable product quality fluctuations. By setting the first guide groove 12, the movement trajectory of the clamping plate 22 can be limited, which can effectively prevent the clamping plate 22 from deviating during the movement in the first direction X. This can improve the straightness of the clamping plate 22 during the movement, and reduce the uneven force on the battery cells or mechanical jamming during the clamping process caused by trajectory deviation.

[0057] In some embodiments, refer to Figures 4-5 In the first direction X, the side surface of the moving member 21 facing the clamping plate 22 is formed as a first inclined surface. The first inclined surface is inclined relative to the first direction X and the second direction Y. The side surface of the clamping plate 22 facing the moving member 21 is formed as a second inclined surface. The first inclined surface and the second inclined surface are in contact, and the moving member 21 pushes the clamping plate 22 to move through the first inclined surface and the second inclined surface.

[0058] It is understandable that the movable member 21 and the clamping plate 22 are connected together by two mutually fitting inclined surfaces. When the movable member 21 moves along the second direction Y, the clamping plate 22 is pushed to the side by the squeezing of the inclined surfaces, thereby achieving the clamping action. At the same time, since the movable member 21 and the clamping plate 22 are mutually fitting, when the clamping plate 22 is squeezed, the clamping plate 22 can exert a reverse action on the movable member 21, and the clamping plate 22 can push the movable member 21 to move in the opposite direction.

[0059] It should be noted that the smaller the angle of the inclined plane, the greater the horizontal pushing force will be, which will be converted into a greater clamping force in the vertical direction. That is, the design of the moving part 21 is equivalent to having a lever built in, which allows the clamping component 20 to generate a large clamping force with a small pushing force.

[0060] Optionally, the torque slope ratio of the clamping component 20 is <0.1. This allows for minimal loss of driving force during transmission and linear response, thereby improving the force control accuracy in the second direction Y, enhancing the uniformity of force on the clamping surface, and maintaining the stability of the overall force transmission state.

[0061] In the above technical solution, the moving part 21 pushes the clamping plate 22 to move through the first inclined surface and the second inclined surface. It can be understood that the transmission relationship between the moving part 21 and the clamping plate 22 is a rigid transmission. In this way, the clamping plate 22 will not back out when it reaches the set position and stops clamping, thereby meeting the restraint requirements of the cell in the formation and other processes. At the same time, the setting of the first inclined surface and the second inclined surface can also enable the moving part 21 and the clamping plate 22 to squeeze each other. Then, when the volume of the battery cell changes during the formation and charging and discharging process, the clamping plate 22 can also drive the moving part 21 to move in the opposite direction. This allows the clamping assembly 20 to adapt to the volume change of the battery cell, thereby preventing stress concentration from damaging the battery cell.

[0062] In some embodiments, the clamping plate 22 is movable along the first direction X between a storage position and a clamping position. In the clamping position, a portion of the clamping plate 22 extends into the clamping cavity 11, and in the storage position, the clamping plate 22 is stored in the first guide groove 12.

[0063] It should be noted that the clamping position is the position where the clamping member contacts the battery cell and applies clamping force, while the storage position is the non-clamping position. When the clamping plate 22 is in this position, the battery cell is in a free state, which makes it easy to remove or put into the clamping cavity 11. The clamping plate 22 will not interfere with the battery cell.

[0064] In the above technical solution, when in the clamping position, part of the clamping plate 22 extends into the clamping cavity 11, and when in the storage position, the clamping plate 22 is stored in the first guide groove 12. This means that the size of the clamping cavity 11 is larger than the size of the battery cell. This facilitates the insertion and removal of the battery cell and helps to improve the rate of the battery cell formation process.

[0065] In some embodiments, refer to Figures 3-4 A second guide groove 14 extending along the second direction Y is formed on the base 10, and the movable member 21 is movably arranged in the second guide groove 14 along the second direction Y.

[0066] For example, refer to Figures 3-4 The movable member 21 is formed as a wedge with two inclined surfaces, and the two surfaces of the movable member 21 in the third direction Z are in a clearance fit with the two inner wall surfaces of the second guide groove 14.

[0067] It should be noted that the guide groove and the limiting groove are connected, which facilitates the cooperation between the moving part 21 and the clamping plate 22.

[0068] In the above technical solution, by setting the second guide groove 14, the moving direction of the moving part 21 can be restricted, the moving accuracy of the moving part 21 can be improved, thereby improving the clamping force accuracy of the clamping assembly 20.

[0069] In some embodiments, refer to Figures 2-5 The base 10 has a connecting hole 13 extending along the second direction Y on one side. The moving part 21 includes a moving body 212 and a handle 211. One end of the handle 211 is connected to the moving body 212, and the other end extends out of the base 10 through the connecting hole 13.

[0070] Specifically, the operator can drive the moving body 212 to move by operating the handle 211, thereby driving the clamping plate 22 to move along the first direction X.

[0071] It should be noted that the first inclined surface is formed on the moving body 212.

[0072] In the above technical solution, by setting handle 211, a convenient force application point can be provided for the movement of moving part 21, so that moving part 21 does not need to add a driving part, and can only move along the second direction Y, thereby reducing the production difficulty of the entire clamping assembly 20 and thus reducing the production cost of the entire forming fixture 100.

[0073] In some embodiments, the clamping plate 22 is movable between a storage position and a clamping position along a first direction X. In two adjacent clamping assemblies 20, when both clamping plates 22 of the two clamping assemblies 20 are in the clamping position, the two clamping plates 22 cooperate with each other to clamp the battery cell. When at least one clamping plate 22 of the two adjacent clamping assemblies 20 is in the storage position, the clamping plate 22 is adapted to separate from the battery cell. The moving member 21 is movable between a first position and a second position along a second direction Y. When the moving member 21 moves from the first position to the second position, it pushes the clamping plate 22 from the storage position to the clamping position. A first locking portion is formed on the moving member 21, and a second locking portion is formed on the base 10. When the moving member 21 is in the second position, the first locking portion and the second locking portion lock into each other.

[0074] Specifically, when the moving part 21 moves from the first position to the second position and drives the clamping plate 22 to the clamping position, the first locking part and the second locking part lock together. In this way, the clamping plate 22 can be fixed in the clamping position and will not move, so that the clamping assembly 20 is maintained in the clamping state for a certain period of time. That is, the battery cell remains in the preset position during the charging and discharging process without changing, which is beneficial to the docking of the negative pressure nozzle and the liquid injection hole, thereby improving the reliability of the battery cell formation process.

[0075] It should be noted that the structure of the first locking part and the second locking part can be a latching protrusion and a latching groove, or other locking structures, which are not limited here.

[0076] Optionally, the first locking part and the second locking part can be formed as a locking protrusion and a locking groove, wherein the structure of the locking protrusion and the locking groove is relatively simple, thereby reducing the production cost of the entire forming fixture 100.

[0077] It should be noted that when the moving part 21 moves from the second position toward the first position, the first locking part moves away from the first locking part, and the moving part 21 is unlocked.

[0078] In the above technical solution, by setting the first locking part and the second locking part, the moving part 21 can be locked when the clamping plate 22 is in the clamping position, that is, the clamping plate 22 can be kept in the clamping position without moving, which is beneficial to the docking of the negative pressure suction nozzle and the liquid injection hole, thereby improving the reliability of the battery cell formation process.

[0079] In some embodiments, a first locking part is provided on the handle 211.

[0080] Optional, for example Figure 5 As shown, the clamping assembly 20 also includes a clamp 24, which is detachably mounted on the base 10 and engages with the handle 211. A first locking portion is formed on the clamp 24, and a second locking portion is formed on the base 10. When the moving member 21 moves to the second position, the first and second locking portions engage to lock the handle 211, thereby locking the moving member 21. Since the first and second locking portions need to be continuously unlocked and locked, placing the first locking portion on the clamp 24 facilitates replacement when the locking portion is damaged, reducing the maintenance cost of the clamping assembly 20.

[0081] In the above technical solution, by setting the first locking part on the handle 211, the locking can be made visible, thereby improving the clamping accuracy of the mortise clamp 100.

[0082] In some embodiments, refer to Figure 6The clamping assembly 20 also includes a drive motor and a screw 23. The screw 23 extends along the second direction Y. One end of the screw 23 is threadedly connected to the moving member 21, and the other end is connected to the drive motor. The drive motor drives the screw 23 to rotate, thereby driving the moving member 21 to move along the second direction Y.

[0083] Specifically, in this embodiment, the moving part 21 drives the screw 23 to rotate via a drive motor to move in the second direction Y, thereby pushing the clamping block to move in the first direction X, and thus clamping the battery cell.

[0084] The phrase "one end of the screw 23 is threadedly connected to the moving part 21" means that this embodiment can achieve precise adjustment of the linear displacement and feed process of the moving part 21 by accurately controlling the number of rotations and lead of the thread.

[0085] In addition, the drive motor and screw 23 have reliable self-locking characteristics, which can effectively prevent the moving part 21 from sliding in the opposite direction, thereby improving the stability of the clamping assembly 20 in the clamping state.

[0086] In the above technical solution, by setting up a drive motor and screw 23, precise adjustment of the linear displacement and feeding process of the moving part 21 can be achieved, thereby improving the precise control of the clamping force of the clamping assembly 20. This allows the clamping assembly 20 to clamp the battery cell while reducing the occurrence of crush damage, thus improving the production reliability of the battery cell. At the same time, since the cooperation between the drive motor and screw 23 has reliable self-locking characteristics, setting up the drive motor and screw 23 can also effectively prevent the moving part 21 from slipping in the opposite direction, thereby improving the stability of the clamping assembly 20 in the clamping state.

[0087] In some embodiments, the plurality of clamping components 20 include: two first clamping components, each of the two first clamping components including a movable member 21 and a clamping plate 22, and the clamping plates 22 of the two first clamping components are arranged facing each other in a first direction X; and / or, at least one second clamping component, the second clamping component including a movable member 21 and two clamping plates 22, the two clamping plates 22 being respectively arranged on both sides of the movable member 21 in the first direction X.

[0088] It is understood that in some specific embodiments, the multiple clamping components 20 may include only two first clamping components. For example, in the design of the formation clamp 100 that only needs to clamp one battery cell, the two first clamping components are located on both sides of the battery cell, and the two first clamping components clamp the battery cell through two clamping plates 22.

[0089] In other specific embodiments, the multiple clamping components 20 may include both two first clamping components and at least one second clamping component. For example, when the formation fixture 100 needs to clamp multiple battery cells, two first clamping components can be disposed at both ends of the base 10 in the first direction X, and the second clamping component can be disposed in the middle of the two first clamping components. The multiple second clamping components are arranged at intervals along the first direction X between the two first clamping components. In this way, each battery cell can be clamped by the clamping component 20, that is, the two large surfaces of each battery cell are subjected to the same force, thereby effectively improving the production quality of the battery cells.

[0090] In some other specific embodiments, the plurality of clamping components 20 may include only the second clamping components. For example, when the formation fixture 100 needs to clamp multiple battery cells, each battery cell is provided with a second clamping component on both sides in the first direction X.

[0091] In the above technical solution, by setting multiple clamping components 20 including two first clamping components and / or at least one second clamping component, the formation fixture 100 of this embodiment can be designed according to the actual situation, thereby improving the adaptability of the formation fixture 100.

[0092] In some embodiments, the clamping assembly 20 further includes a cushioning pad disposed on the side of the clamping plate 22 opposite to the movable member 21.

[0093] Understandably, the clamping assembly 20 contacts the large surface of the battery cell through a buffer pad, which is generally a soft pad. This effectively reduces hard contact between the clamping plate 22 and the battery cell, thereby reducing damage to the battery cell caused by the clamping assembly 20 during clamping. In addition, the buffer pad can increase the friction between the clamping assembly 20 and the large surface of the battery cell, thereby preventing slippage when the clamping plate 22 clamps the battery cell. This improves the clamping stability of the clamping assembly 20 on the battery cell, allowing the clamping assembly 20 to apply a fixed pressure to the large surface of the battery cell, thus effectively improving the interface process of processes such as cell formation.

[0094] In the above technical solution, by setting a buffer pad, the hard contact between the clamping plate 22 and the battery cell can be effectively reduced, thereby reducing the damage to the battery cell caused by the clamping assembly 20 during the clamping process. In addition, the buffer pad can also increase the friction between the clamping assembly 20 and the large surface of the battery cell, thereby preventing the clamping plate 22 from sliding when clamping the battery cell, thus improving the clamping stability of the clamping assembly 20 on the battery cell, and enabling the clamping assembly 20 to apply a fixed pressure to the large surface of the battery cell, thereby effectively improving the interface process of processes such as cell formation.

[0095] In some embodiments, the clamping assembly 20 further includes an adjustment pad disposed on the side of the clamping plate 22 opposite to the moving member 21, the number of adjustment pads being adjustable, or the thickness of the adjustment pads being adjustable in the first direction X.

[0096] It is understood that in some specific embodiments, the size of the clamping cavity 11 can be adjusted by replacing the adjusting pads of different thicknesses, thereby adapting to battery cells of different thicknesses. For example, when clamping a battery cell with a smaller thickness, a thicker adjusting pad can be used, and when clamping a battery cell with a larger thickness, a thinner adjusting pad can be used. In other specific embodiments, the size of the clamping cavity 11 can be adjusted by adjusting the number of adjusting pads to adapt to battery cells of different thicknesses. For example, when clamping a battery cell with a smaller thickness, the number of adjusting pads can be increased to increase the thickness of the adjusting pads, thereby reducing the clamping distance between the two clamping plates 22 between two adjacent clamping components 20. When clamping a battery cell with a larger thickness, the number of adjusting pads can be reduced so that the clamping distance between the two clamping plates 22 is adapted to the thickness of the battery cell.

[0097] In the above technical solution, by setting an adjustment pad, the formation fixture 100 can be adapted to battery cells of different thicknesses and sizes, thereby effectively improving the versatility of the formation fixture 100, thereby effectively increasing the utilization rate of the base 10, reducing the replacement frequency of the entire fixture, and reducing the cost of the modification line.

[0098] Secondly, embodiments of this application also provide a formation apparatus, including a formation fixture 100 according to the first aspect.

[0099] The following will refer to Figures 1-6 Describes a formation fixture 100 according to two specific embodiments of this application.

[0100] Example 1, Reference Figure 1 The forming fixture 100 includes: a base 10 and a plurality of clamping components 20.

[0101] Specifically, a plurality of partitions are formed on the base 10 at intervals along the first direction X, and a clamping cavity 11 is defined between two partitions. Each partition has a through hole that runs through it along the first direction X. The number of partitions corresponds one-to-one with the number of clamping components 20, and a clamping component 20 is arranged in each through hole.

[0102] The plurality of clamping assemblies 20 includes: two first clamping assemblies and at least one second clamping assembly. The two first clamping assemblies are disposed on the partitions at both ends of the base 10 in the first direction X, and the second clamping assembly is disposed in the middle of the two first clamping assemblies. The first clamping assembly includes a moving member 21 and a clamping plate 22. In the first direction X, the clamping plates 22 of the two first clamping assemblies are arranged facing each other. The second clamping assembly includes a moving member 21 and two clamping plates 22. The two clamping plates 22 are respectively arranged on both sides of the moving member 21 in the first direction X.

[0103] Specifically, the movable member 21 is movably disposed on the partition between the first position and the second position along the second direction Y, and the clamping plate 22 is movably disposed on the partition between the clamping position and the storage position along the first direction X. The movable member 21 is configured to drive the clamping plate 22 to move from the storage position to the clamping position when moving from the first position to the second position, so that the clamping plate 22 cooperates with the clamping plate 22 of the adjacent clamping assembly 20 to clamp the battery cell.

[0104] In the first direction X, the side surface of the moving member 21 facing the clamping plate 22 is formed as a first inclined surface. The first inclined surface is inclined relative to the first direction X and the second direction Y. The side surface of the clamping plate 22 facing the moving member 21 is formed as a second inclined surface. The first inclined surface and the second inclined surface are in contact, and the moving member 21 pushes the clamping plate 22 to move through the first inclined surface and the second inclined surface.

[0105] Furthermore, the through hole defines the first guide groove 12. The clamping plate 22 is movably arranged in the first guide groove 12 along the first direction X. When the clamping plate 22 is in the clamping position, a portion of the clamping plate 22 extends into the clamping cavity 11. When the clamping plate 22 is in the storage position, it is stored in the first guide groove 12.

[0106] A second guide groove 14 is formed on the partition, extending along the second direction Y and communicating with the first guide groove 12. The movable member 21 is movably arranged in the second guide groove 14 along the second direction Y.

[0107] A first locking portion is formed on the movable member 21, and a second locking portion is formed on the base 10. When the movable member 21 is in the second position, the first locking portion and the second locking portion lock into each other.

[0108] The movable component 21 includes a handle 211 and a movable body 212. One end of the handle 211 is connected to the movable body 212, and the other end extends out of the base 10 through a connecting hole 13 on the partition. The connecting hole 13 is formed on one side of the partition in the second direction Y and communicates with the through hole. The movable component 21 moves along the second direction Y by applying an external force to the handle 211.

[0109] Furthermore, the clamping assembly 20 also includes a buffer pad disposed on the side of the clamping plate 22 opposite to the moving member 21.

[0110] The clamping assembly 20 also includes adjustment pads arranged on the side of the clamping plate 22 opposite to the moving member 21, and the number of adjustment pads is adjustable.

[0111] In the above technical solution, by setting the movable component 21 and the clamping plate 22, the spacing between adjacent clamping components 20 can be flexibly adjusted, enabling the formation fixture 100 to adapt to battery cells of different thicknesses and sizes, and possessing the ability to freely adjust the restraint stroke. This improves the versatility of the formation fixture 100, thereby effectively reducing the frequency of tooling changes and reducing the cost of line modification. Simultaneously, since the clamping plate 22 is movable along the first direction X, it can achieve uniform force distribution on both sides of the battery cell and bidirectional floating limit, effectively overcoming the problems of single-sided cell offset and misalignment between the cell opening and the equipment positioning hole that are common in existing single-sided clamping structures. Defects; In addition, since this solution uses mechanical clamping instead of airbag compression, it can effectively eliminate the risk of airbag leakage and the need for periodic maintenance. Moreover, compared with the airbag compression solution, the clamping pressure of mechanical clamping is constant and controllable, which can effectively solve the problem of uncontrollable product quality fluctuations. By setting the first guide groove 12, the movement trajectory of the clamping plate 22 can be limited, which can effectively prevent the clamping plate 22 from deviating during the movement in the first direction X. This can improve the straightness of the clamping plate 22 during the movement, and reduce the uneven force on the battery cells or mechanical jamming during the clamping process caused by trajectory deviation.

[0112] Example 2, Reference Figure 6 The structure of this embodiment is roughly the same as that of embodiment one, with the same reference numerals used for the same components. The only difference is that the moving part 21 in embodiment one includes a handle 211, while the moving part 21 in this embodiment two does not have a handle 211, and the clamping assembly 20 includes a drive motor and a screw 23.

[0113] Specifically, the screw 23 extends along the second direction Y. One end of the screw 23 is threadedly connected to the moving part 21, and the other end is connected to the drive motor. The drive motor drives the screw 23 to rotate, thereby driving the moving part 21 to move along the second direction Y.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A formation clamp (100) characterized by, include: Base (10); A plurality of clamping assemblies (20) are spaced apart on the base (10) along a first direction (X). Each clamping assembly (20) includes a movable member (21) and a clamping plate (22). The movable member (21) is movably disposed on the base (10) along a second direction (Y). The clamping plate (22) is movably disposed on the base (10) along the first direction (X) and is disposed on at least one side of the movable member (21) in the first direction (X). The movable member (21) is configured to drive the clamping plate (22) along the second direction (Y) when moving. The first direction (X) moves so that the clamping plate (22) cooperates with the clamping plate (22) of the adjacent clamping assembly (20) to clamp the battery cell. The first direction (X) and the second direction (Y) intersect. At least one clamping cavity (11) is formed on the base (10). The clamping cavity (11) is provided with the clamping assembly (20) on both sides in the first direction (X). The clamping cavity (11) is provided with a first guide groove (12) on the side wall in the first direction (X). The clamping plate (22) is movably arranged in the first guide groove (12) along the first direction (X).

2. The formation clamp (100) according to claim 1, characterized in that In the first direction (X), the side surface of the moving member (21) facing the clamping plate (22) is formed as a first inclined surface, which is inclined relative to the first direction (X) and the second direction (Y). The side surface of the clamping plate (22) facing the moving member (21) is formed as a second inclined surface. The first inclined surface and the second inclined surface are in contact, and the moving member (21) pushes the clamping plate (22) to move through the first inclined surface and the second inclined surface.

3. The formation clamp (100) of claim 1, wherein, The clamping plate (22) is movable between a storage position and a clamping position along the first direction (X). In the clamping position, a portion of the clamping plate (22) extends into the clamping cavity (11). In the storage position, the clamping plate (22) is stored in the first guide groove (12).

4. The chemical formation fixture (100) according to claim 1, characterized in that, A second guide groove (14) extending along the second direction (Y) is formed on the base (10), and the moving member (21) is movably arranged in the second guide groove (14) along the second direction (Y).

5. The formation clamp (100) according to any one of claims 1-4, characterized in that, The base (10) has a connecting hole (13) extending along the second direction (Y) on one side. The moving part (21) includes a moving body (212) and a handle (211). One end of the handle (211) is connected to the moving body (212), and the other end extends out of the base (10) through the connecting hole (13).

6. The formation clamp (100) of claim 5, wherein, The clamping plate (22) is movable along the first direction (X) between a storage position and a clamping position. In two adjacent clamping assemblies (20), when both clamping plates (22) of the two clamping assemblies (20) are in the clamping position, the two clamping plates (22) cooperate with each other to clamp the battery cell. When at least one clamping plate (22) of the two adjacent clamping assemblies (20) is in the storage position, the clamping plate (22) is adapted to separate from the battery cell. The movable member (21) is movable along the second direction (Y) between a first position and a second position. When the movable member (21) moves from the first position to the second position, it pushes the clamping plate (22) from the storage position to the clamping position. A first locking portion is formed on the moving member (21), and a second locking portion is formed on the base (10). When the moving member (21) is in the second position, the first locking portion and the second locking portion lock together.

7. The chemical formation fixture (100) according to claim 6, characterized in that, The first locking part is provided on the handle (211).

8. The chemical formation fixture (100) according to any one of claims 1-4, characterized in that, The clamping assembly (20) further includes a drive motor and a screw (23). The screw (23) extends along the second direction (Y). One end of the screw (23) is threadedly connected to the moving part (21), and the other end is connected to the drive motor. The drive motor drives the screw (23) to rotate, thereby causing the moving part (21) to move along the second direction (Y).

9. The chemical formation fixture (100) according to claim 1, characterized in that, The plurality of clamping components (20) include: Two first clamping assemblies, each including a movable element (21) and a clamping plate (22), wherein the clamping plates (22) of the two first clamping assemblies are arranged facing each other in the first direction (X); and / or, At least one second clamping assembly, the second clamping assembly including a movable member (21) and two clamping plates (22), the two clamping plates (22) being respectively arranged on both sides of the movable member (21) in the first direction (X).

10. The chemical formation fixture (100) according to claim 1, characterized in that, The clamping assembly (20) further includes a buffer pad disposed on the side of the clamping plate (22) opposite to the moving member (21).

11. The chemical formation fixture (100) according to claim 1, characterized in that, The clamping assembly (20) further includes an adjustment pad disposed on the side of the clamping plate (22) away from the moving member (21). The number of adjustment pads is adjustable, or the thickness of the adjustment pads in the first direction (X) is adjustable.

12. A formation apparatus, characterized in that, include: The chemical formation fixture (100) according to any one of claims 1-11.

Images