Clamp and battery production line

Abstract

The clamp comprises a supporting assembly, a guiding assembly and a pressure transmission assembly, the supporting assembly comprises a first supporting plate, a second supporting plate and a third supporting plate, and the third supporting plate is arranged on the side, away from the first supporting plate, of the second supporting plate; the guide assembly is connected among the first supporting plate, the second supporting plate and the third supporting plate, the pressure transmission assembly comprises a positioning column and a stress dispersion part, the stress dispersion part is arranged in the middle area of the side, facing the first supporting plate, of the second supporting plate, and the positioning column penetrates through the first supporting plate and then is connected with the stress dispersion part. According to the scheme provided by the invention, when the second supporting plate is in contact with the to-be-pressed electric core, the second supporting plate does not deform due to long-term non-uniform stress on the surface, so that the stress balance of the to-be-pressed electric core can be ensured, and the phenomenon that the large surface of the electric core is wrinkled due to non-uniform stress is avoided.

Description

Technical Field

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

[0002] During the manufacturing process of solid-state battery electrodes, there are many microscopic voids inside the electrodes and electrolytes. At this time, it is necessary to use jigs to compress these microscopic voids, thereby achieving cell densification.

[0003] The fixtures in related technologies are prone to deformation during use. Utility Model Content

[0004] In view of the above problems, this application provides a fixture and battery production line that can solve the problem that existing fixtures are prone to deformation during use.

[0005] To address the aforementioned technical problems, this application proposes a fixture, comprising:

[0006] A support assembly, comprising a first support plate, a second support plate, and a third support plate, wherein the third support plate is disposed on the side of the second support plate opposite to the first support plate;

[0007] A guide assembly is connected between the first support plate, the second support plate, and the third support plate, and the second support plate is slidable relative to the guide assembly;

[0008] A pressure transmission assembly, comprising a positioning post and a force-dispersing component, wherein the force-dispersing component is disposed in the middle region of the second support plate facing the first support plate, the positioning post passes through the first support plate and is connected to the force-dispersing component, and the positioning post is axially movable relative to the first support plate.

[0009] Under the condition that the positioning column is under pressure, the force dispersing component can disperse the corresponding pressure to the side of the second support plate facing the first support plate, so that the second support plate is subjected to uniform force.

[0010] In the technical solution of this application embodiment, when the positioning post is subjected to pressure, the positioning post transmits the pressure to the second support plate through the force-distributing component, so that the second support plate is subjected to uniform force. In this way, when the second support plate presses onto the cell to be pressed on the third support plate, since the second support plate itself is subjected to uniform force, the second support plate will not deform due to long-term uneven force on its surface when it comes into contact with the cell to be pressed. This also ensures that the cell to be pressed is subjected to balanced force and avoids wrinkling on the surface of the cell due to uneven force.

[0011] In some embodiments, the guide assembly includes multiple guide posts, with both ends of the guide posts fixedly connected to the first support plate and the third support plate, respectively. The second support plate is provided with guide holes, and the guide posts pass through the guide holes. The second support plate is slidable along the axial direction of the guide posts.

[0012] In some embodiments, a rolling element is provided within the guide hole. When the guide post passes through the guide hole, the rolling element makes rolling contact with the circumferential side of the guide post. This reduces the friction between the second support plate and the guide post during their relative movement, thereby reducing wear on both the guide post and the second support plate, and ultimately extending the service life of the overall fixture.

[0013] In some embodiments, the first support plate is provided with a through hole, and the positioning post is clearance-fitted with the through hole, with the clearance value being within a preset range.

[0014] This avoids friction between the positioning post and the through hole. At the same time, by limiting the range of the gap value, it prevents the positioning post from shaking relative to the through hole, thus achieving precise guidance of the positioning post.

[0015] In some embodiments, the force-dispersing component includes a support block, which is fixed to the side of the second support plate facing the first support plate. The end of the positioning post facing the support block is connected to the support block, and the axis of the positioning post is collinear with the geometric center of the support block.

[0016] In this way, since the axis of the positioning column is collinear with the geometric center of the support block, when the positioning column is subjected to pressure, the positioning column can evenly transmit the corresponding pressure to the support block.

[0017] In some embodiments, when the length and width of the cell to be pressed on the third support plate are 1 / 3 to 1 / 2 of the length and width of the second support plate, the four corner positions on the support block correspond one-to-one with the four corner positions on the large surface of the cell, and the projection of the support block on the cell to be pressed is located within the large surface of the cell.

[0018] When the length and width of the cell to be pressed on the third support plate are 1 / 2 to 2 / 3 of the length and width of the second support plate, the projections of the two ends of the support block along the first direction onto the cell to be pressed are located at the 1 / 4 and 3 / 4 positions of the large surface of the cell in the first direction.

[0019] By defining the four corner positions on the support block as corresponding one-to-one with the four corner positions on the large surface of the battery cell, and ensuring that the projection of the support block on the battery cell to be pressed is located within the large surface of the battery cell, it can be ensured that the pressure on the support block directly acts on the effective area of ​​the battery cell to be pressed.

[0020] By defining the projections of the two ends of the support block along the first direction onto the cell to be pressed, corresponding to the positions at 1 / 4 and 3 / 4 of the large surface of the cell in the first direction, the pressure exerted by the support block on the second support plate can be evenly distributed across the entire second support plate, thereby achieving the goal of uniform force distribution on both the second support plate and the cell to be pressed.

[0021] In some embodiments, the clamp further includes a positioning element disposed on the side of the third support plate facing the second support plate. The positioning element is configured to limit the position of the battery cell to be pressed in a first direction and a second direction. This facilitates the positioning of the battery cell to be pressed, ensuring that the battery cell is always centered on the third support plate and that the force is balanced.

[0022] In some embodiments, the positioning element includes a first positioning plate and a second positioning plate, both of which are disposed on the side of the third support plate facing the second support plate;

[0023] The first positioning plate is configured to limit the cell to be pried in the first direction, and the second positioning plate is configured to limit the cell to be pried in the second direction.

[0024] In this way, the piezoelectric cell can be limited in the first and second directions by using the first and second positioning plates.

[0025] In some embodiments, the first positioning plate is detachably connected to the third support plate, and / or,

[0026] The second positioning plate is detachably connected to the third support plate. This facilitates the adjustment and replacement of the corresponding first and second positioning plates according to the size of the battery cell to be pressed.

[0027] In some embodiments, the clamp further includes a locking member connected to the positioning post, the locking member being configured to adjust the position of the positioning post relative to the first support plate, and to adjust the position of the force-distributing member relative to the positioning post.

[0028] In this way, the position of the positioning pin can be adjusted accordingly by the locking component, and at the same time, the position of the force-distributing component can be adjusted.

[0029] In some embodiments, the positioning post is a threaded rod, and the locking member includes a first fastening nut, which is threadedly connected to the threaded rod and located on the side of the first support plate facing the second support plate. Thus, after the threaded rod passes through the first support plate, rotating the first fastening nut until it is in close contact with the side of the first support plate facing the second support plate allows the corresponding threaded rod to move axially. This, in turn, allows the force-distributing member to move the second support plate towards the third support plate, thereby synchronously adjusting the clamping force of the battery cell clamped between the second and third support plates.

[0030] In some embodiments, the locking element further includes a second fastening nut and a third fastening nut, both of which are threadedly connected to the threaded rod;

[0031] The threaded rod is inserted through the force-distributing member at one end, the force-distributing member is axially movable relative to the threaded rod, and the force-distributing member is located between the second fastening nut and the third fastening nut.

[0032] In this way, by rotating the second and third fastening nuts, the axial position of the force-distributing component relative to the threaded rod can be adjusted. At this time, the force-distributing component can drive the second support plate to move toward the third support plate, so as to synchronously adjust the clamping force of the battery cell to be clamped between the second and third support plates.

[0033] In some embodiments, at least one of the second support plate and the third support plate is a plating structure or a composite structure; the plating structure is a metal plating layer covering the surface of the substrate, and the composite structure is a structure formed by stacking and fixing different materials.

[0034] In this way, when the second and third support plates are coated structures, the compressive strength of the overall plate surface can be enhanced, avoiding surface depressions and wear caused by long-term pressure transmission; when the second and third support plates are composite structures, the plate can be made to be less prone to breakage and to remain flat when subjected to concentrated pressure.

[0035] In some embodiments, a flexible layer is provided on the side of the second support plate facing the third support plate, and / or,

[0036] The third support plate has a flexible layer on the side facing the second support plate.

[0037] In this way, when the second and third support plates come into contact with the cell to be pressed, friction damage to the surface of the cell to be pressed can be avoided.

[0038] This application also proposes a battery production line, including a fixture as described in any one of the embodiments of this application.

[0039] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0040] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0041] Figure 1 A schematic diagram of the included angle provided for some embodiments of this application;

[0042] Figure 2 This is a schematic diagram of the included angle from another perspective, provided for some embodiments of this application.

[0043] The reference numerals in the detailed embodiments are as follows:

[0044] 10. Battery cell; 11. First support plate; 111. Through hole; 12. Second support plate; 13. Third support plate; 14. Guide assembly; 15. Pressure transmission assembly; 151. Positioning post; 152. Force distribution component; 16. Positioning component; 161. First positioning plate; 162. Second positioning plate; 17. Connecting sleeve; 18. Locking component; 181. First fastening nut; 182. Second fastening nut; 183. Third fastening nut. Detailed Implementation

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0051] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 are not intended to 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.

[0052] 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.

[0053] With the booming development of the new energy industry, the demand for batteries as energy sources is constantly increasing across all sectors. The demand for batteries with higher energy density, better cycle characteristics, and higher safety characteristics is increasing dramatically, so the development of solid-state batteries is receiving more and more attention.

[0054] During the manufacturing process of solid-state battery electrodes, numerous microscopic voids exist within both the electrode itself and the electrolyte. This necessitates the use of pressures of several hundred megapascals or even higher to compress these voids, thereby achieving cell densification and ensuring uniform adhesion between the solid and electrolyte interfaces to facilitate ion conduction. This requires the use of hydrostatic clamps to compress these microscopic voids.

[0055] When using the clamps in the related technologies, the clamp plates on the clamps are prone to deformation, which can lead to uneven force acting on the battery cell to be pressed.

[0056] Based on the above considerations, in order to solve the problem of deformation that easily occurs during use of existing clamps, this application proposes a clamp including a support assembly, a guide assembly, and a pressure transmission assembly. The support assembly includes a first support plate, a second support plate, and a third support plate, with the third support plate disposed on the side of the second support plate opposite to the first support plate. The guide assembly connects the first, second, and third support plates, and the second support plate is capable of sliding relative to the guide assembly. The pressure transmission assembly includes a positioning post and a force-distributing component. The force-distributing component is disposed in the central region of the second support plate facing the first support plate. The positioning post passes through the first support plate and is connected to the force-distributing component, and the positioning post is capable of axial movement relative to the first support plate. Under pressure on the positioning post, the force-distributing component can distribute the corresponding pressure to the side of the second support plate facing the first support plate, thereby ensuring uniform force distribution on the second support plate.

[0057] In the technical solution of this application embodiment, when the positioning post is subjected to pressure, the positioning post transmits the pressure to the second support plate through the force-distributing component, so that the second support plate is subjected to uniform force. In this way, when the second support plate presses onto the cell to be pressed on the third support plate, since the second support plate itself is subjected to uniform force, the second support plate will not deform due to long-term uneven force on its surface when it comes into contact with the cell to be pressed. This also ensures that the cell to be pressed is subjected to balanced force and avoids wrinkling on the surface of the cell due to uneven force.

[0058] According to some embodiments of this application, such as Figure 1 and combined Figure 2As shown, this application provides a clamp including a support assembly, a guide assembly 14, and a pressure transmission assembly 15. The support assembly includes a first support plate 11, a second support plate 12, and a third support plate 13. The third support plate 13 is disposed on the side of the second support plate 12 opposite to the first support plate 11. The guide assembly 14 connects the first support plate 11, the second support plate 12, and the third support plate 13, and the second support plate 12 is slidable relative to the guide assembly 14. The pressure transmission assembly 15 includes... The positioning post 151 and the force-dispersing component 152 are provided. The force-dispersing component 152 is disposed in the middle region of the second support plate 12 facing the first support plate 11. The positioning post 151 passes through the first support plate 11 and is connected to the force-dispersing component 152. The positioning post 151 can move axially relative to the first support plate 11. Under the condition that the positioning post 151 is under pressure, the force-dispersing component 152 can disperse the corresponding pressure to the side of the second support plate 12 facing the first support plate 11, so that the second support plate 12 is subjected to uniform force.

[0059] refer to Figure 1 As shown, in this embodiment, the first support plate 11, the second support plate 12, and the third support plate 13 are installed in the upper, middle, and lower positions in sequence. At the same time, the first support plate 11, the second support plate 12, and the third support plate 13 are the same size and are all square structures. Of course, it can be understood that the first support plate 11, the second support plate 12, and the third support plate 13 can also be other structures, which are not limited here.

[0060] In this embodiment, the guide component 14 can be a connecting shaft. The two ends of the connecting shaft can be snapped onto the corresponding first support plate 11 and third support plate 13, or the two ends of the connecting shaft can be connected together with the corresponding first support plate 11 and third support plate 13 through threaded engagement. At the same time, the second support plate 12 is provided with a connecting hole, the connecting shaft passes through the corresponding connecting hole, and the second support plate 12 can move relative to the connecting shaft along its axial direction.

[0061] In this embodiment, the force-distributing component 152 can be a support block. The support block can be bolted to the upper surface of the second support plate 12 and is located in the middle area of ​​the corresponding second support plate 12. One end of the positioning post 151 is above the first support plate 11, and the other end of the positioning post 151 passes through the first support plate 11 axially and can be bolted to the support block. The specific details can be determined according to the actual situation, and this embodiment does not limit this.

[0062] In use, when the positioning post 151 is subjected to pressure from top to bottom, the positioning post 151 transmits the pressure to the second support plate 12 through the force-distributing component 152. Since the force-distributing component 152 is located in the middle area of ​​the second support plate 12, and the second support plate 12 can slide relative to the guide assembly 14, the force on the second support plate 12 can be uniform. When the second support plate 12 presses against the cell 10 to be pressed on the third support plate 13, because the second support plate 12 itself is subjected to uniform force, the second support plate 12 will not deform due to long-term uneven force on its surface when it comes into contact with the cell 10 to be pressed. This also ensures that the cell to be pressed is subjected to balanced force and avoids wrinkles on the surface of the cell due to uneven force.

[0063] According to some embodiments of this application, such as Figure 1 As shown, the guide assembly 14 includes multiple guide posts. The two ends of the guide posts are fixedly connected to the first support plate 11 and the third support plate 13, respectively. The second support plate 12 is provided with guide holes, and the guide posts pass through the guide holes. The second support plate 12 can slide along the axial direction of the guide posts.

[0064] The guide assembly 14 in this embodiment includes four or six guide posts. For ease of explanation, the following description will use a guide assembly 14 with four guide posts as an example. The four guide posts are evenly distributed at the four corners of the first support plate 11. The upper end of each guide post can be bolted to the corresponding first support plate 11, and the lower end of each guide post can be bolted to the corresponding third support plate 13. At the same time, a guide hole is provided at each of the four corners of the second support plate 12, through which the guide post passes, and the second support plate 12 can slide axially relative to the guide post.

[0065] When the positioning post 151 is subjected to pressure from top to bottom, the positioning post 151 transmits the pressure to the second support plate 12 through the force distribution member 152. At this time, the second support plate 12 can slide relative to the guide post along its axial direction.

[0066] According to some embodiments of this application, a rolling element is provided in the guide hole, and when the guide post passes through the guide hole, the rolling element makes rolling contact with the side of the guide post in the circumferential direction.

[0067] The rolling element in this embodiment can be a linear bearing, ball bearing, or needle roller, and the specific type can be determined according to the actual situation. This specification does not limit this embodiment.

[0068] refer to Figure 1 As shown, in this embodiment, a connecting sleeve 17 is fixed inside the guide hole, and then the corresponding rolling element is fixed in the connecting sleeve 17. After the guide post passes through the corresponding guide hole, the side of the guide post in the circumferential direction makes rolling contact with the corresponding rolling element.

[0069] In this way, when the second support plate 12 slides relative to the guide post along its axial direction, the friction between the second support plate 12 and the guide post during the movement of the second support plate 12 relative to the guide post can be reduced, thereby reducing the wear of the guide post and the second support plate 12, and thus extending the service life of the overall fixture.

[0070] According to some embodiments of this application, such as Figure 1 As shown, the first support plate 11 is provided with a through hole 111, and the positioning post 151 is fitted with the through hole 111 with a clearance, and the clearance value is within a preset range.

[0071] In this embodiment, the through hole 111 can be located in the middle region of the first support plate 11.

[0072] In this embodiment, the gap value can be between 0.01mm and 0.1mm. When the positioning post 151 passes through the corresponding through hole 111, there is a corresponding gap between the positioning post 151 and the through hole 111. In this way, friction between the positioning post 151 and the through hole 111 can be avoided. At the same time, by limiting the range of the gap value, the positioning post 151 is prevented from shaking relative to the through hole 111, thereby achieving precise guidance of the positioning post 151.

[0073] According to some embodiments of this application, such as Figure 2 As shown, the force-distributing component 152 includes a support block, which is fixed to the side of the second support plate 12 facing the first support plate 11. The end of the positioning post 151 facing the support block is connected to the support block, and the axis of the positioning post 151 is collinear with the geometric center of the support block.

[0074] In this embodiment, the support block can be connected to the upper surface of the second support plate 12 by bolts. At the same time, the support block can also be connected to the lower end of the positioning column 151 by bolts. The specific connection can be determined according to the actual situation, and this embodiment does not limit the connection.

[0075] When the support block is connected to the positioning post 151, the axis of the positioning post 151 is collinear with the geometric center of the support block. Therefore, when the positioning post 151 is subjected to pressure, the positioning post 151 can evenly transmit the corresponding pressure to the support block.

[0076] According to some embodiments of this application, such as Figure 2 As shown, under the condition that the length and width of the battery cell 10 to be pressed on the third support plate 13 are 1 / 3 to 1 / 2 of the length and width of the second support plate 12, the four corner positions on the support block correspond one-to-one with the four corner positions on the large surface of the battery cell, and the projection of the support block on the battery cell to be pressed is located within the large surface of the battery cell.

[0077] With the length and width of the cell 10 to be pressed located on the third support plate 13 corresponding to 1 / 2 to 2 / 3 of the length and width of the second support plate 12, the projections of the two ends of the support block along the first direction onto the cell to be pressed are located at the 1 / 4 and 3 / 4 positions of the large surface of the cell in the first direction.

[0078] The first direction in this embodiment is as follows: Figure 2 The X-axis direction in the diagram.

[0079] In this embodiment, the "large surface" of the battery cell refers to, for example, Figure 2 The side of the middle cell 10 facing the second support plate 12.

[0080] In this embodiment, when the length of the cell 10 to be pressed on the third support plate 13 is 1 / 3 to 1 / 2 of the length of the second support plate 12, and the width of the cell 10 to be pressed on the third support plate 13 is also 1 / 3 to 1 / 2 of the width of the second support plate 12, the four corner positions on the support block correspond one-to-one with the four corner positions on the large surface of the cell, and the projection of the support block on the cell to be pressed is located within the large surface of the cell. This ensures that the pressure on the support block directly acts on the effective area of ​​the cell to be pressed.

[0081] When the length of the cell 10 to be pressed on the third support plate 13 is 1 / 2 to 2 / 3 of the length of the second support plate 12, and the width of the cell 10 to be pressed on the third support plate 13 is also 1 / 2 to 2 / 3 of the width of the second support plate 12, the projections of the two ends of the support block along the X-axis onto the cell 10 to be pressed correspond to the positions at 1 / 4 and 3 / 4 of the X-axis direction of the large surface of the cell 10. This allows the pressure exerted by the support block on the second support plate 12 to be evenly distributed across the entire second support plate 12, thereby achieving the goal of uniform force distribution on both the second support plate 12 and the cell to be pressed.

[0082] According to some embodiments of this application, such as Figure 1 As shown, the fixture also includes a positioning element 16, which is disposed on the side of the third support plate 13 facing the second support plate 12. The positioning element 16 is configured to limit the piezoelectric cell in the first and second directions.

[0083] The first direction in this embodiment is as follows: Figure 1 The X-axis direction, the second direction is as follows Figure 1 The Y-axis direction is defined in the diagram, where the angle between the X-axis and Y-axis can be 80°, 85°, or 90°, etc. For ease of explanation, the following will use the example of the X-axis and Y-axis being perpendicular to each other.

[0084] In this embodiment, the positioning element 16 can be a positioning plate, which can be snapped onto the upper surface of the third support plate 13. The positioning plate has an overall L-shaped structure. When the battery cell to be pressed is placed on the third support plate 13, it is positioned by the L-shaped positioning plate so that the battery cell to be pressed is placed in the center on the third support plate 13 to ensure force balance.

[0085] According to some embodiments of this application, such as Figure 1 As shown, the positioning member 16 includes a first positioning plate 161 and a second positioning plate 162, wherein the first positioning plate 161 and the second positioning plate 162 are both disposed on the side of the third support plate 13 facing the second support plate 12; the first positioning plate 161 is configured to limit the cell to be pried in a first direction, and the second positioning plate 162 is configured to limit the cell to be pried in a second direction.

[0086] In this embodiment, both the first positioning plate 161 and the second positioning plate 162 can be snapped onto the upper surface of the third support plate 13, which is not limited here.

[0087] In this embodiment, the first positioning plate 161 is fixed on the third support plate 13 along the X-axis direction, and the second positioning plate 162 is fixed on the third support plate 13 along the Y-axis direction. When the piezoelectric cell to be placed on the third support plate 13, the piezoelectric cell to be placed can be limited in the X-axis direction and the Y-axis direction by the first positioning plate 161 and the second positioning plate 162.

[0088] According to some embodiments of this application, the first positioning plate 161 is detachably connected to the third support plate 13, and / or the second positioning plate 162 is detachably connected to the third support plate 13.

[0089] In this embodiment, both the first positioning plate 161 and the second positioning plate 162 can be connected to the third support plate 13 by bolts or snap-fit. The specific connection can be determined according to the actual situation, and this embodiment does not limit this.

[0090] In use, since the first positioning plate 161 and the second positioning plate 162 can be detached from the third support plate 13, it is convenient to adjust and replace the corresponding first positioning plate 161 and second positioning plate 162 according to the size of the battery cell to be pressed.

[0091] According to some embodiments of this application, such as Figure 2 As shown, the fixture also includes a locking member 18, which is connected to the positioning post 151. The locking member 18 is configured to adjust the position of the positioning post 151 relative to the first support plate 11, and is configured to adjust the position of the force-dispersing member 152 relative to the positioning post 151.

[0092] In this embodiment, the locking element 18 can be a nut, and the positioning pin 151 is a threaded rod. The nut is connected to the threaded rod. After the threaded rod passes through the through hole 111 on the first support plate 11, the nut is connected to the threaded rod. At this time, the nut is located below the corresponding first support plate 11. When the nut abuts against the bottom surface of the first support plate 11, rotating the nut will cause the corresponding threaded rod to move along the through hole 111, thereby adjusting the position of the positioning pin 151 relative to the first support plate 11.

[0093] Similarly, after the force-dispersing component 152 is fitted onto the corresponding positioning post 151, nuts are provided on the upper and lower sides of the force-dispersing component 152. These nuts are connected to the threaded rod. By rotating the nuts on the upper and lower sides, the position of the force-dispersing component 152 relative to the positioning post 151 can be adjusted.

[0094] According to some embodiments of this application, such as Figure 2 As shown, the positioning post 151 is a threaded rod, and the locking member 18 includes a first fastening nut 181, which is threadedly connected to the threaded rod and is located on the side of the first support plate 11 facing the second support plate 12.

[0095] In this embodiment, the threaded rod passes through the through hole 111 on the first support plate 11 and is connected to the force-distributing component 152. The threaded rod and the through hole 111 are clearance-fitted, and the first fastening nut 181 is threaded onto the threaded rod, and the first fastening nut 181 is located below the first support plate 11.

[0096] After the threaded rod passes through the first support plate 11, by rotating the first fastening nut 181, when the first fastening nut 181 is in close contact with the side of the first support plate 11 facing the second support plate 12, rotating the first fastening nut 181 can drive the corresponding threaded rod to move axially, thereby synchronously driving the force-distributing component 152 to move, and then driving the second support plate 12 to move towards the third support plate 13, so as to synchronously adjust the clamping force of the battery cell 10 to be clamped by the second support plate 12 and the third support plate 13.

[0097] According to some embodiments of this application, such as Figure 2 As shown, the locking member 18 also includes a second fastening nut 182 and a third fastening nut 183, both of which are threaded to the threaded rod. One end of the threaded rod facing the force-distributing member 152 passes through the force-distributing member 152, which is able to move axially relative to the threaded rod, and is located between the second fastening nut 182 and the third fastening nut 183.

[0098] In this embodiment, the threaded rod passes through the through hole 111 on the first support plate 11 and connects to the force-distributing component 152. The threaded rod is clearance-fitted with the through hole 111, and the first fastening nut 181 is threaded onto the threaded rod, located below the first support plate 11. Simultaneously, the second fastening nut 182 and the third fastening nut 183 are both threaded onto the threaded rod, and the force-distributing component 152 is located between the second fastening nut 182 and the third fastening nut 183.

[0099] In use, by rotating the second fastening nut 182 and the third fastening nut 183, since the force-distributing component 152 is located between the second fastening nut 182 and the third fastening nut 183, the position of the force-distributing component 152 relative to the threaded rod along the axial direction can be adjusted when the second fastening nut 182 and the third fastening nut 183 move axially relative to the threaded rod. At this time, the force-distributing component 152 can drive the second support plate 12 to move toward the third support plate 13 so as to synchronously adjust the clamping force of the battery cell 10 to be clamped by the second support plate 12 and the third support plate 13.

[0100] According to some embodiments of this application, at least one of the second support plate 12 and the third support plate 13 is a plating structure or a composite structure; the plating structure is a metal plating layer covering the surface of the substrate, and the composite structure is a structure formed by stacking and fixing different materials.

[0101] In this embodiment, the plating structure can be a metal plating layer, such as chromium plating or nickel plating, covering the surface of the substrate. This can enhance the compressive strength of the surfaces of the second support plate 12 and the third support plate 13, and avoid surface depressions and wear caused by long-term pressure transmission.

[0102] The composite structure in this embodiment can be a carbon steel substrate and a stainless steel surface layer, or an aluminum alloy substrate and a hard alloy layer. This allows the second support plate 12 and the third support plate 13 to be less prone to breakage and to remain flat when subjected to concentrated pressure.

[0103] According to some embodiments of this application, a flexible layer is provided on the side of the second support plate 12 facing the third support plate 13, and / or, a flexible layer is provided on the side of the third support plate 13 facing the second support plate 12.

[0104] In this embodiment, the flexible layer can be a silicone layer, a PI material layer, etc., and the flexible layer needs to withstand high temperatures above 150°C.

[0105] When the second support plate 12 and the third support plate 13 come into contact with the cell to be pressed, friction damage to the surface of the cell to be pressed can be avoided.

[0106] This application also provides a battery production line, including fixtures as described in any of the embodiments of this application.

[0107] The specific structure of the fixture in this embodiment refers to the above embodiments. Since the battery production line adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0108] 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 clamp characterized in that, The clamp comprises: a support assembly comprising a first support plate, a second support plate, and a third support plate arranged on a side of the second support plate away from the first support plate; a guide assembly connected between the first support plate, the second support plate, and the third support plate, and the second support plate can slide along the guide assembly; a pressure transmission assembly comprising a positioning column and a stress dispersion member, the stress dispersion member is arranged in a middle area of a side of the second support plate facing the first support plate, the positioning column is arranged behind the first support plate and connected with the stress dispersion member, and the positioning column can move axially relative to the first support plate; under the condition that the positioning column is pressed, the stress dispersion member can disperse the corresponding pressure to a side of the second support plate facing the first support plate, so that the second support plate is uniformly stressed.

2. The clamp of claim 1, wherein The guide assembly comprises a plurality of guide columns, both ends of the guide column are fixedly connected with the first support plate and the third support plate respectively, a guide hole is arranged on the second support plate, the guide column is arranged in the guide hole, and the second support plate can slide along the axial direction of the guide column.

3. The clamp of claim 2, wherein A rolling member is arranged in the guide hole, and under the condition that the guide column is arranged in the guide hole, the rolling member rolls in contact with the circumferential side of the guide column.

4. The clamp of claim 1, wherein A through hole is arranged on the first support plate, the positioning column is gap-fitted with the through hole, and the gap value is within a preset range.

5. The clamp of claim 1 or 4, wherein The stress dispersion member comprises a support block, the support block is fixed to a side of the second support plate facing the first support plate, one end of the positioning column facing the support block is connected with the support block, and the axis of the positioning column is collinear with the geometric center of the support block.

6. The clamp of claim 5, wherein Under the condition that the length-width ratio of the to-be-pressed battery cell located on the third support plate is 1 / 3-1 / 2 of the length-width ratio of the second support plate, the four corner positions on the support block correspond one-to-one to the four corner positions on the large surface of the battery cell, and the projection of the support block on the to-be-pressed battery cell is located in the large surface of the battery cell. Under the condition that the length-width ratio of the to-be-pressed battery cell located on the third support plate is 1 / 2-2 / 3 of the length-width ratio of the second support plate, the projections of the two ends of the support block in the first direction on the to-be-pressed battery cell correspond to 1 / 4 position and 3 / 4 position in the first direction on the large surface of the battery cell.

7. The clamp of any one of claims 1 to 4, wherein The clamp further comprises a positioning member arranged on a side of the third support plate facing the second support plate, and the positioning member is configured to limit the to-be-pressed battery cell in the first direction and the second direction.

8. The clamp of claim 7, wherein, The positioning member comprises a first positioning plate and a second positioning plate, and both the first positioning plate and the second positioning plate are arranged on a side of the third support plate facing the second support plate. The first positioning plate is configured to limit the to-be-pressed battery cell in the first direction, and the second positioning plate is configured to limit the to-be-pressed battery cell in the second direction.

9. The clamp of claim 8, wherein, The first positioning plate is detachably connected with the third support plate, and / or The second positioning plate is detachably connected to the third support plate.

10. The clamp of any one of claims 1 to 4, wherein The clamp further comprises a locking member connected to the positioning column, the locking member being configured to adjust the position of the positioning column relative to the first support plate and to adjust the position of the force dispersion member relative to the positioning column.

11. The clamp of claim 10, wherein, The positioning column is a threaded rod, the locking member comprises a first fastening nut, the first fastening nut being threadedly connected to the threaded rod, and the first fastening nut being located on the side of the first support plate facing the second support plate.

12. The clamp of claim 11, wherein, The locking member further comprises a second fastening nut and a third fastening nut, both of which are threadedly connected to the threaded rod. The end of the threaded rod facing the force dispersion member is provided through the force dispersion member, the force dispersion member being axially movable relative to the threaded rod, and the force dispersion member being located between the second fastening nut and the third fastening nut.

13. The clamp of any one of claims 1 to 4, wherein At least one of the second support plate and the third support plate is a plated structure or a composite structure. The plated structure is a structure in which a metal plating layer is covered on the surface of a substrate, and the composite structure is a structure formed by laminating and fixing different materials.

14. The clamp of claim 13, wherein, The side of the second support plate facing the third support plate is provided with a flexible layer, and / or, The side of the third support plate facing the second support plate is provided with a flexible layer.

15. A battery production line, characterized by The clamp comprises any one of the clamps according to claims 1 to 14.

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