Stamping equipment and production system

Abstract

A stamping device (100) comprises a first part (10), a second part (20), a stamping part (30) and a limiting part (40). The first member has an abutting surface (121) for abutting a workpiece in a first direction (X). The second component is arranged opposite to the abutting face in the first direction, and the second component and the first component can be close to each other or away from each other in the first direction. The stamping part is connected to the side, facing the abutting face, of the second part and used for stamping a groove in the workpiece. The limiting piece is arranged between the first component and the second component and is configured to limit the minimum distance between the stamping piece and the abutting face in the first direction. And a production system (1000). When the stamping part stamps the workpiece in the first direction, the limiting part can limit the minimum distance between the stamping part and the abutting face so as to control the residual thickness of the stamping part after a groove is stamped in the workpiece, and therefore the consistency of the thickness of the groove bottom wall of the groove machined in the workpiece can be improved, and the machining quality of the stamping equipment is improved.

Description

Stamping equipment and production systems Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a stamping device and a production system. Background Art

[0002] In recent years, new energy vehicles have experienced rapid development. In the electric vehicle sector, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. With the vigorous promotion of new energy vehicles, the demand for power battery products is also growing. As a core component of new energy vehicles, batteries have high requirements in terms of reliability and service life.

[0003] In battery technology, to ensure the safety of battery cells, scored grooves are typically stamped into the outer shell of the battery cell to form a pressure relief structure for relieving internal pressure in the battery cell. When the internal pressure or temperature of the battery cell reaches a threshold, the pressure relief structure activates to release the pressure within the battery cell. However, the precision of the scored grooves stamped into the outer shell of existing battery cells is low, resulting in uneven residual thickness of the scored grooves and poor consistency of the scored grooves across the battery cells, hindering production quality.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a stamping device and a production system that can effectively improve the manufacturing quality of workpieces.

[0006] In the first aspect, an embodiment of the present application provides a stamping device, comprising a first component, a second component, a stamping part and a limiter; the first component has a contact surface, and the contact surface is used to contact the workpiece along a first direction; the second component is arranged opposite to the contact surface along the first direction, and the second component and the first component can approach or move away from each other in the first direction; the stamping part is connected to the side of the second component facing the contact surface, and the stamping part is used to stamp a groove on the workpiece; the limiter is arranged between the first component and the second component, and the limiter is configured to limit the minimum distance between the stamping part and the contact surface in the first direction.

[0007] In the above technical solution, the first component has an abutting surface for abutting against the workpiece along the first direction, the second component and the abutting surface are arranged opposite to each other in the first direction, and a stamping part is provided on the side of the second component facing the abutting surface, so that when the first component and the second component approach each other along the first direction, the stamping part can punch a groove on the workpiece abutting against the abutting surface, wherein, by arranging a limiter between the first component and the second component, the limiter can limit the minimum distance between the stamping part and the abutting surface when the stamping part approaches the abutting surface along the first direction and punches a groove on the workpiece, thereby controlling the residual thickness of the stamping part after punching the groove on the workpiece, so as to realize the control of the residual thickness of the groove after the workpiece is stamped, and then improving the consistency of the thickness of the bottom wall of the groove processed on the workpiece, so as to improve the processing quality of the stamping equipment.

[0008] In some embodiments, the limiting member includes a first limiting portion and a second limiting portion arranged opposite to each other along a first direction, along the first direction, one end of the first limiting portion is connected to the first component, and one end of the second limiting portion is connected to the second component, and the other end of the second limiting portion and the other end of the first limiting portion are configured to abut against each other when the first component and the second component approach each other, so as to limit the minimum distance between the stamping part and the abutment surface in the first direction.

[0009] In the above technical solution, the limiting member is provided with a first limiting portion and a second limiting portion which are arranged relatively along the first direction, and one end of the first limiting portion and one end of the second limiting portion are respectively connected to the first component and the second component, so that when the first component and the second component approach each other along the first direction, the other end of the first limiting portion and the other end of the second limiting portion can abut against each other to limit the minimum distance between the stamping component and the abutting surface in the first direction. The stamping equipment adopting this structure can realize that the limiting collision between the second component and the first component occurs between the first limiting portion and the second limiting portion of the limiting member, thereby effectively alleviating the phenomenon of direct collision between the limiting member and the first component, so as to reduce the phenomenon of damage to the second component or the first component, and thus is conducive to improving the service life and reliability of the stamping equipment.

[0010] In some embodiments, the difference between the minimum stiffness of the first limiting portion and the minimum stiffness of the second limiting portion is less than or equal to 2×10 10 N / m.

[0011] In the above technical solution, by setting the difference between the minimum stiffness of the first limiting portion and the minimum stiffness of the second limiting portion to be less than or equal to 2×10 10N / m, so that the minimum stiffness of the first limiting part and the second limiting part are relatively close. In this way, when the first limiting part and the second limiting part abut against each other, the one with larger stiffness of the first limiting part and the second limiting part is not likely to cause a large deformation of the one with smaller stiffness of the first limiting part and the second limiting part, which is beneficial to improving the effect of limiting the minimum distance between the stamping part and the abutting surface, so that the residual thickness of the groove punched out on the workpiece is more accurate, which is beneficial to improving the processing quality of the workpiece.

[0012] In some embodiments, the minimum stiffness of the first limiting portion is greater than or equal to 6.25×10 10 N / m; and / or, the minimum stiffness of the second limiting portion is greater than or equal to 6.25×10 10 N / m.

[0013] In the above technical solution, by setting the minimum stiffness of the first limiting portion to be greater than or equal to 6.25×10 10 N / m, so that the first limit part has sufficient rigidity, reducing the risk of bending deformation of the first limit part when abutting against the second limit part, which is conducive to improving the minimum distance limit effect between the stamping part and the abutting surface, making the residual thickness of the groove punched on the workpiece more accurate, which is conducive to improving the processing quality of the workpiece. Similarly, by setting the minimum rigidity of the second limit part to be greater than or equal to 6.25×10 10 N / m, so that the second limiting portion has sufficient rigidity, reducing the risk of bending and deformation of the second limiting portion when abutting against the first limiting portion, which is beneficial to improving the minimum distance limiting effect between the stamping part and the abutting surface, and making the residual thickness of the groove punched on the workpiece more accurate, which is beneficial to improving the processing quality of the workpiece.

[0014] In some embodiments, along the first direction, a difference between a length of the first limiting portion and a length of the second limiting portion is less than or equal to 10 cm.

[0015] In the above technical solution, by setting the difference in length between the first limiting portion and the second limiting portion in the first direction to be less than or equal to 10 cm, the lengths of the first limiting portion and the second limiting portion in the first direction are close. Therefore, on the one hand, the contact collision point between the first limiting portion and the second limiting portion can be far away from both the first component and the second component to reduce the phenomenon of damage to the second component or the first component. On the other hand, the stiffness and structural strength of the first limiting portion and the second limiting portion can be close, so that the first limiting portion and the second limiting portion abut against each other to limit the minimum distance between the stamping part and the abutting surface in the first direction.

[0016] In some embodiments, along the first direction, the length of the first limiting portion is equal to the length of the second limiting portion.

[0017] In the above technical solution, by setting the lengths of the first limiting portion and the second limiting portion in the first direction to be equal, the stiffness and structural strength of the first limiting portion and the second limiting portion are further made close, so that the first limiting portion and the second limiting portion abut against each other to limit the minimum distance between the stamping part and the abutting surface in the first direction.

[0018] In some embodiments, the area of ​​the minimum cross section of the first limiting portion perpendicular to the first direction is equal to the area of ​​the minimum cross section of the second limiting portion perpendicular to the first direction.

[0019] In the above technical solution, by setting the areas of the minimum cross sections of the first limiting portion and the second limiting portion perpendicular to the first direction to be equal, the stiffness and structural strength of the first limiting portion and the second limiting portion are made close, thereby facilitating the mutual abutment of the first limiting portion and the second limiting portion to limit the minimum distance between the stamping part and the abutment surface in the first direction.

[0020] In some embodiments, along the first direction, the limit member has a first end and a second end relative to each other, the first end is connected to the first component, and the second end is configured to abut against the second component when the first component and the second component are close to each other, so as to limit the minimum distance between the stamping part and the abutment surface in the first direction.

[0021] In the above technical solution, by connecting the first end of the limiter to the first component, the second component can abut against the second end of the limiter when the first component and the second component approach each other along the first direction, so as to achieve the minimum distance between the stamping part and the abutment surface in the first direction. The structure is simple and easy to assemble and use.

[0022] In some embodiments, along the first direction, the limit member has a first end and a second end relative to each other, the second end is connected to the second component, and the first end is configured to abut against the first component when the first component and the second component are close to each other, so as to limit the minimum distance between the stamping part and the abutment surface in the first direction.

[0023] In the above technical solution, by connecting the second end of the limiter to the second component, the second component can achieve the limiter approaching the first component when the first component and the second component approach each other along the first direction, so that the first end of the limiter can abut against the first component to achieve the minimum distance between the stamping part and the abutting surface in the first direction. The structure is simple and easy to assemble and use.

[0024] In some embodiments, the abutting surface is used to support the workpiece along the first direction, and the second component is movable relative to the first component along the first direction to drive the stamping part to stamp a groove on the workpiece.

[0025] In the above technical solution, the abutment surface of the first component is set to support the workpiece along the first direction, and the second component is set to a structure that can move relative to the first component along the first direction, so that the workpiece is placed on the abutment surface of the first component along the first direction, and the second component drives the stamping part to approach the abutment surface along the first direction and stamp the workpiece. This structure makes it easier for the stamping part to stamp grooves on the workpiece, which is beneficial to improving the stamping quality of the workpiece, and it is convenient to place the workpiece on the stamping equipment for processing and remove it from the stamping equipment, which is beneficial to reducing the processing difficulty of the workpiece and improving the stamping efficiency of the workpiece.

[0026] In some embodiments, the first component includes a fixed base and a support base; the fixed base is arranged opposite to the second component along the first direction; the support base is connected to the side of the fixed base facing the second component along the first direction, and the side of the support base facing the second component forms the abutment surface; wherein, along the first direction, the limit member is arranged between the fixed base and the second component.

[0027] In the above technical solution, the first component is provided with a fixed base and a support seat, the support seat is connected to the side of the fixed base facing the second component, and the side of the support seat facing the second component forms an abutment surface for supporting the workpiece. On the one hand, the stamping equipment adopting this structure is convenient for supporting workpieces of different structures and shapes, and is beneficial to reducing the stamping stroke of the stamping part in the first direction. On the other hand, it is only necessary to set the limiter between the fixed base and the second component to limit the minimum distance between the stamping part connected to the second component and the abutment surface, which is beneficial to reduce the assembly difficulty of the limiter.

[0028] In some embodiments, the stamping part forms a stamping end for stamping a groove on the workpiece at one end away from the second part in the first direction, and along the first direction, the sum of the distance from the stamping end to the second part and the distance from the abutting surface to the fixed base is less than the height dimension of the limit member.

[0029] In the above technical solution, by setting the sum of the distance from the stamping end of the stamping part to the second component in the first direction and the distance from the abutment surface of the support seat to the fixed base in the first direction to be smaller than the height dimension of the limiting member, the stamping part is still out of contact with the abutment surface of the support seat when the second component and the fixed base are restricted by the limiting member, thereby effectively alleviating the phenomenon that the stamping part punches through the workpiece placed on the abutment surface.

[0030] In some embodiments, there are multiple limiting members, and the multiple limiting members are arranged around the support seat.

[0031] In the above technical solution, the stamping equipment is provided with a plurality of limit members, and the plurality of limit members are structures arranged around the support seat, so that the plurality of limit members are structures arranged at intervals along the circumference of the support seat. On the one hand, it can further improve the effect of limiting the second component and the fixed base, so as to improve the stability and reliability of the limit members in limiting the minimum distance between the stamping component and the abutment surface in the first direction. On the other hand, it can improve the balance and stability of the force exerted by the limit members on the second component and the fixed base, so as to alleviate the phenomenon of the fixed base and the second component tilting due to local force, which is beneficial to improve the stability and reliability of the stamping workpiece of the stamping part.

[0032] In some embodiments, the stamping equipment further includes a clamping mechanism; the clamping mechanism is connected to the second component, and the clamping mechanism is used to press the workpiece against the abutment surface when the first component and the second component are close to each other.

[0033] In the above technical solution, the stamping equipment is also provided with a clamping mechanism, which is connected to the second component, and the clamping mechanism can press the workpiece on the abutment surface when the first component and the second component approach each other along the first direction. On the one hand, it can improve the stability of the workpiece during the stamping process to reduce the shaking or slipping of the workpiece during the stamping process, which is beneficial to improving the stamping accuracy of the stamping equipment. On the other hand, it can alleviate the phenomenon of warping or bending of the workpiece when it is subjected to the stamping pressure of the stamping part, which is beneficial to improving the stamping quality of the stamping equipment.

[0034] In some embodiments, the pressing mechanism includes a pressing seat and an elastic member; the pressing seat is located on the side of the second component facing the abutment surface along the first direction, and the pressing seat is used to press the workpiece on the abutment surface; the elastic member is connected between the pressing seat and the second component along the first direction, and the elastic member is configured to be compressed along the first direction when the pressing seat abuts against the workpiece.

[0035] In the above technical solution, the pressing mechanism is provided with a pressing seat and an elastic member, the pressing seat is used to abut against the workpiece placed on the abutting surface to press the workpiece against the abutting surface, and the pressing seat is a structure connected to the second member through the elastic member, so that when the second member drives the pressing seat to press the workpiece against the abutting surface, the elastic member can be compressed along the first direction and provide elastic force to the pressing seat, so that the pressing seat presses the workpiece against the abutting surface. The pressing mechanism adopting this structure can, on the one hand, play a certain buffering role through the elastic member to alleviate the phenomenon of rigid contact or rigid collision between the pressing seat and the workpiece, which is beneficial to reducing the risk of the pressing seat damaging the workpiece; on the other hand, the elastic member can provide elastic force to the pressing seat, so that the pressing seat can press the workpiece against the abutting surface more firmly, which is beneficial to improving the stability and reliability of the pressing seat in pressing the workpiece.

[0036] In some embodiments, the stamping part forms a stamping end at one end away from the second part in the first direction for stamping a groove on the workpiece; wherein, when the clamping seat is not in contact with the workpiece, along the first direction, the side of the clamping seat for abutting the workpiece is closer to the abutting surface than the stamping end.

[0037] In the above technical solution, the side of the pressing seat that abuts against the workpiece is set to an abutment surface that is closer to the support seat than the stamping end of the stamping part when the pressing seat is not in contact with the workpiece, so that when the abutment surface of the first component and the second component approach each other along the first direction, the pressing seat of the pressing mechanism will contact the workpiece preferentially compared to the stamping part, so that the pressing seat of the pressing mechanism can press the workpiece on the abutment surface before the stamping part is stamped, thereby reducing the phenomenon of workpiece slippage or warping caused by the stamping part contacting the workpiece, which is beneficial to improving the stability and reliability of the stamping part in stamping the workpiece.

[0038] In some embodiments, the pressing seat is provided with a through hole for the stamping part to pass through, and the through hole penetrates the pressing seat along the first direction; wherein, along the first direction, at least a portion of the projection of the stamping part is located in the through hole.

[0039] In the above technical solution, the pressing member is provided with a through hole in the first direction for the punching member to pass through, so that the punching member can punch the workpiece pressed by the pressing seat after passing through the through hole. The stamping equipment using this structure facilitates the punching member to punch the workpiece, and the pressing seat is a structure arranged around the punching member, so that the pressing seat can press the entire area of ​​the workpiece surrounding the punching member against the abutment surface, thereby further improving the effect of the pressing seat on pressing the workpiece. In addition, by arranging at least a portion of the projection of the punching member in the first direction to be located within the through hole, the phenomenon of scraping between the punching member and the pressing seat when passing through the through hole of the pressing seat is reduced.

[0040] In some embodiments, there are multiple elastic members, and the multiple elastic members are arranged around the stamping member.

[0041] In the above technical solution, the clamping mechanism is provided with a plurality of elastic parts, and the plurality of elastic parts are a structure arranged around the stamping part, so that the plurality of elastic parts are a structure arranged at intervals along the circumference of the stamping part. On the one hand, the clamping seat can be connected to the second part through a plurality of elastic parts, which is beneficial to further improve the stability of the clamping seat connected to the second part. On the other hand, the force balance of the clamping seat can be achieved to alleviate the phenomenon that the clamping seat is locally subjected to the elastic force of the elastic parts, thereby helping to further improve the effect of the clamping seat in pressing the workpiece on the abutment surface.

[0042] In some embodiments, the stamping part includes a connecting portion and a cutting head; the connecting portion is connected to the side of the second component facing the abutment surface; the cutting head is protruding from the surface of the connecting portion facing away from the second component in the first direction, and the end of the cutting head away from the connecting portion in the first direction forms a stamping end, and the stamping end is used to stamp a groove on the workpiece.

[0043] In the above technical solution, the stamping part is provided with a connecting portion and a cutter head, and the cutter head is a structure connected to the second component through the connecting portion, so as to facilitate the assembly of the stamping part to the second component. On the one hand, it can reduce the difficulty of assembly between the cutter head of the stamping part and the second component, and on the other hand, it can improve the stability and reliability of the cutter head during the stamping process of the workpiece.

[0044] In some embodiments, the stamping is detachably connected to the second component.

[0045] In the above technical solution, by detachably connecting the stamping parts to the second component, the stamping parts can be quickly disassembled and replaced. On the one hand, it is convenient to replace stamping parts of different models to perform stamping processing on the workpiece, which is beneficial to expanding the scope of application of the stamping equipment. On the other hand, when the stamping parts are damaged or worn, they can be replaced or repaired, which is beneficial to reducing the later maintenance costs of the stamping equipment.

[0046] In a second aspect, an embodiment of the present application further provides a production system, comprising a workpiece and the above-mentioned stamping equipment; the workpiece is configured to abut against the abutment surface along the first direction.

[0047] In some embodiments, the workpiece is a shell of a battery cell, a accommodating cavity with an opening is formed inside the shell, and the shell includes a wall portion; wherein, part of the first component is inserted into the accommodating cavity from the opening to position the shell, and the abutting surface is used to abut against the wall portion along the first direction, and the stamping part is used to stamp a groove on the side of the wall portion away from the abutting surface.

[0048] In the above technical solution, the workpiece is the shell of the battery cell, and part of the first component is inserted into the accommodating cavity of the shell so that the abutting surface of the first component can abut against the wall of the shell, so that the abutting surface of the first component can abut against the wall of the shell while also playing a positioning role for the shell through the first component, so as to realize the stamping processing of the stamping part on the wall of the shell. The production system adopting this structure can improve the stability and reliability of the stamping equipment in stamping workpieces, and reduce the risk of shaking or slipping of the wall of the shell during the stamping process, which is conducive to improving the accuracy of the stamping grooves of the stamping part on the wall of the shell.

[0049] In some embodiments, the shell includes a side wall and the wall portion, the side wall is arranged around the wall portion, and along the first direction, one end of the side wall is connected to the wall portion, and the other end is enclosed to form an opening, and the side wall and the wall portion jointly define a accommodating cavity; wherein, along the first direction, part of the first component is inserted into the accommodating cavity from the opening to position the shell, and the abutting surface is used to abut against the wall portion along the first direction.

[0050] In the above technical solution, the shell includes a side wall and a wall portion, the side wall is arranged around the wall portion, one end of the side wall in the first direction is connected to the wall portion, and the other end is enclosed to form an opening, so that the wall portion and the opening are structures arranged along the first direction, so that it is convenient for part of the first component to be inserted into the accommodating cavity from the opening along the first direction and then abut against the wall portion. A production system adopting this structure can reduce the difficulty of the abutment surface between the wall portion of the shell and the first component, and facilitate the stamping of stamping parts, which is beneficial to reduce the processing difficulty of stamping grooves on the shell, so as to improve production efficiency.

[0051] In some embodiments, the abutment surface is used to support the wall portion along the first direction, and the second component can move relative to the first component along the first direction to drive the stamping part to stamp a groove on the side of the wall portion away from the abutment surface.

[0052] In the above technical solution, the abutment surface of the first component is set to support the wall portion along the first direction, and the second component is set to a structure that can move relative to the first component along the first direction, so that the wall portion is placed on the abutment surface of the first component along the first direction, and the second component drives the stamping part to approach the abutment surface along the first direction and stamp the wall portion. This structure makes it convenient for the stamping part to stamp grooves on the wall portion of the shell, which is beneficial to improving the stamping quality of the wall portion, and is convenient for putting the shell on the first component for stamping processing and punching it out of the first component, which is beneficial to reducing the processing difficulty of the shell and improving the processing efficiency of the shell.

[0053] In some embodiments, the first component includes a fixed base and a support base. Along the first direction, the fixed base and the second component are arranged opposite to each other, and the support base is connected to the side of the fixed base facing the second component. The support base is inserted into the accommodating cavity, and the side of the support base facing the second component forms the abutment surface, and the limiter is arranged between the fixed base and the second component; wherein the side wall surrounds the outer side of the support base, and a gap is set between the side wall and the support base.

[0054] In the above technical solution, the first component includes a fixed base and a support seat, and the support seat is a structure inserted into the accommodating cavity of the shell to position the shell, wherein the side wall of the shell is set to a structure that surrounds the outside of the support seat and has a gap with the support seat, so that the support seat can be inserted into the accommodating cavity of the shell or withdrawn from the accommodating cavity of the shell, thereby reducing the difficulty of inserting or withdrawing the support seat from the accommodating cavity of the shell, and can reduce the scratching phenomenon between the side wall of the shell and the support seat.

[0055] In some embodiments, the surface of the wall portion facing the accommodating cavity is connected to the surface of the side wall facing the accommodating cavity through an arc surface; wherein, along the first direction, the projection of the arc surface is located in the gap between the side wall and the support seat.

[0056] In the above technical solution, the arc surface formed between the surface of the wall facing the accommodating cavity and the surface of the side wall facing the accommodating cavity is set so that the projection in the first direction is located within the gap between the side wall and the support seat, so that the support seat can avoid the arc chamfer structure formed between the inner surface of the wall and the inner surface of the side wall, so as to reduce the interference between the abutting surface and the arc surface, thereby reducing the phenomenon of the gap formed between the abutting surface and the wall, so as to enhance the supporting effect of the abutting surface on the wall, and further effectively alleviate the phenomenon of bending or deformation of the wall caused by the stamping part during the stamping process of the wall, which is beneficial to improving the stamping quality of the wall.

[0057] In some embodiments, the first component includes a fixed base and a support seat. Along the first direction, the fixed base and the second component are arranged opposite to each other, the support seat is connected to the side of the fixed base facing the second component, part of the support seat is inserted into the accommodating cavity, and the side of the support seat facing the second component forms the abutment surface, and the limiter is arranged between the fixed base and the second component; wherein, the end of the stamping part away from the second component in the first direction forms a stamping end for stamping a groove on the workpiece, and along the first direction, the sum of the distance from the stamping end to the second component, the distance from the abutment surface to the fixed base and the thickness of the wall portion is greater than the height dimension of the limiter.

[0058] In the above technical solution, by setting the sum of the distance from the stamping end of the stamping part to the second part, the distance from the abutting surface of the support seat to the fixed base, and the thickness of the wall portion to be greater than the height dimension of the limiting part arranged between the fixed base and the second part, the limiting part can limit the distance between the fixed base and the second part while also enabling the stamping end of the stamping part to contact the wall portion and punch a groove on the wall portion, which is beneficial to reducing the phenomenon that the stamping part cannot be stamped on the wall portion of the shell.

[0059] In some embodiments, the wall surface of the accommodating cavity is coated with protective oil.

[0060] In the above technical solution, protective oil is provided on the wall surface of the accommodating cavity of the shell to increase the smoothness of the inner surface of the shell, thereby reducing the difficulty of inserting the first component into the accommodating cavity from the opening of the shell, and reducing the friction coefficient between the first component and the inner surface of the shell, which is conducive to alleviating the risk of the inner surface of the shell being scratched by the first component.

[0061] In some embodiments, the Brinell hardness of the material of the first component is greater than the Brinell hardness of the material of the workpiece; and / or the Brinell hardness of the material of the stamping part is greater than the Brinell hardness of the material of the workpiece; and / or the Brinell hardness of the material of the limit part is greater than the Brinell hardness of the material of the workpiece.

[0062] In the above technical solution, by setting the Brinell hardness of the material of the first component to be greater than the Brinell hardness of the workpiece material, the phenomenon of deformation or damage of the first component during the process of the stamping part punching the workpiece is alleviated, which is conducive to improving the processing quality of the workpiece. Similarly, by setting the Brinell hardness of the material of the stamping part to be greater than the Brinell hardness of the workpiece material, the phenomenon of deformation or damage of the stamping part during the process of punching the workpiece is alleviated, which is conducive to improving the processing quality of the workpiece. Similarly, by setting the Brinell hardness of the material of the limiter to be greater than the Brinell hardness of the workpiece material, the phenomenon of deformation or damage of the limiter during the process of the stamping part punching the workpiece is alleviated, thereby improving the effect of the limiter in limiting the minimum distance between the stamping part and the abutment surface, thereby improving the processing quality of the workpiece.

[0063] In some embodiments, the material of the first component includes steel, the material of the stamping part includes steel, the material of the limiting part includes steel, and the material of the workpiece includes aluminum.

[0064] In the above technical solution, by setting the material of the first component, the stamping part and the limit part to steel, and setting the material of the workpiece to aluminum, the Brinell hardness of the material of the first component, the stamping part and the limit part is greater than the Brinell hardness of the material of the workpiece, and the material cost is reduced, which is beneficial to reducing the manufacturing cost of the stamping equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0066] FIG1 is a schematic structural diagram of a stamping device provided in some embodiments of the present application;

[0067] FIG2 is a front view of a stamping device provided in some embodiments of the present application;

[0068] FIG3 is a cross-sectional view of a stamping device provided in some embodiments of the present application;

[0069] FIG4 is a schematic structural diagram of a stamping device provided in some other embodiments of the present application;

[0070] FIG5 is a schematic structural diagram of a stamping device provided in some further embodiments of the present application;

[0071] FIG6 is a schematic structural diagram of a stamping part of a stamping device provided in some embodiments of the present application;

[0072] FIG7 is a schematic structural diagram of a stamping part of a stamping device provided in some embodiments of the present application in another embodiment;

[0073] FIG8 is a schematic structural diagram of a production system provided in some embodiments of the present application;

[0074] FIG9 is a front view of a production system provided by some embodiments of the present application;

[0075] FIG10 is a cross-sectional view of a production system provided by some embodiments of the present application;

[0076] FIG11 is an exploded view of the structure of a battery cell provided in some embodiments of the present application;

[0077] FIG12 is a schematic structural diagram of a shell of a battery cell provided in some embodiments of the present application;

[0078] FIG13 is a partially enlarged view of point A of the production system shown in FIG10 .

[0079] Icons: 1000-production system; 100-stamping equipment; 10-first component; 11-fixed base; 12-support seat; 121-abutment surface; 20-second component; 30-stamping part; 31-stamping end; 32-connecting part; 33-cutter head; 40-limiting part; 41-first limiting part; 42-second limiting part; 43-first end; 44-second end; 50-pressing mechanism; 51-pressing seat; 511-through hole; 52-elastic part; 200-battery cell; 60-shell; 61-shell; 611-accommodating chamber; 612-opening; 613-wall; 614-side wall; 615-arc surface; 62-end cover; 70-electrode assembly; X-first direction. DETAILED DESCRIPTION

[0080] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0081] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0082] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0083] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0084] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0085] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0086] The term "plurality" used in this application refers to two or more (including two).

[0087] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0088] The battery cells can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present application.

[0089] A battery cell typically includes an electrode assembly. This assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of a battery cell, active ions (such as lithium ions) are inserted and removed between the positive and negative electrodes. The separator, placed between the positive and negative electrodes, prevents short circuits between the positive and negative electrodes while allowing the active ions to pass through.

[0090] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0091] As an example, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is provided on either or both of the two facing surfaces of the positive electrode current collector.

[0092] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0093] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present application is not limited to these materials, and other traditional materials that can be used as positive electrode active materials for batteries may also be used. These positive electrode active materials may be used alone or in combination of two or more. Examples of lithium-containing phosphates may include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (such as LiMnPO4), a composite material of lithium manganese phosphate and carbon, lithium iron manganese phosphate, and a composite material of lithium iron manganese phosphate and carbon. Examples of lithium transition metal oxides may include, but are not limited to, lithium cobalt oxide (such as LiCoO2), lithium nickel oxide (such as LiNiO2), lithium manganese oxide (such as LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (such as LiNi1 / 3Co1 / 3Mn1 / 3O2 (also referred to as NCM333), LiNi0.5Co0.2Mn0.3O2 (also referred to as NCM523), LiNi0.5Co0.25Mn0.25O2 (also referred to as NCM211), LiNi0.6Co0.2Mn0.2O2 (also referred to as NCM622), LiNi0.8Co0.1Mn0.1O2 (also referred to as NCM811), lithium nickel cobalt aluminum oxide (such as LiNi0.85Co0.15Al0.05O2) and at least one of their modified compounds.

[0094] In some embodiments, a positive electrode may utilize a metal foam. The metal foam may include nickel foam, copper foam, aluminum foam, alloy foam, or the like. When a metal foam is used as the positive electrode, the surface of the metal foam may or may not include a positive electrode active material. For example, a lithium source material, potassium metal, or sodium metal may be filled or / and deposited within the metal foam, where the lithium source material is lithium metal and / or a lithium-rich material.

[0095] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0096] As an example, the negative electrode current collector may be a metal foil, a metal foam, or a composite current collector. For example, as the metal foil, aluminum or stainless steel treated with silver, stainless steel, copper, aluminum, nickel, carbon electrode, nickel, or titanium, etc. may be used. The metal foam may be nickel foam, copper foam, aluminum foam, alloy foam, etc. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by forming a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0097] As an example, the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0098] As an example, the negative electrode current collector has two surfaces facing each other in its thickness direction, and the negative electrode active material is provided on either or both of the two facing surfaces of the negative electrode current collector.

[0099] As an example, the negative electrode active material may adopt the negative electrode active material for battery cells that is well known in the art. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. The tin-based material may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for batteries may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0100] In some embodiments, the material of the positive electrode current collector may be aluminum, and the material of the negative electrode current collector may be copper.

[0101] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0102] In some embodiments, the separator is a separator membrane. There are many types of separator membranes, and any known separator membrane with a porous structure having good chemical stability and mechanical stability can be selected.

[0103] As an example, the separator can be made of at least one of fiberglass, non-woven fabric, polyethylene, polypropylene, and polyvinylidene fluoride. The separator can be a single-layer film or a multi-layer composite film. In the case of a multi-layer composite film, the materials of each layer can be the same or different. The separator can be a separate component positioned between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes.

[0104] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transport ions and isolate the positive and negative electrodes.

[0105] In some embodiments, the battery cell further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The electrolyte can be liquid, gel, or solid. Liquid electrolytes include an electrolyte salt and a solvent.

[0106] In some embodiments, the electrolyte salt may include at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bisfluorosulfonyl imide, lithium bistrifluoromethanesulfonyl imide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorooxalatoborate, lithium bisoxalatoborate, lithium difluorodioxalatophosphate, and lithium tetrafluorooxalatophosphate.

[0107] In some embodiments, the solvent may include at least one of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methylpropyl carbonate, ethylpropyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, cyclopentane, dimethyl sulfone, methyl ethyl sulfone and diethyl sulfone. The solvent may also be an ether solvent. The ether solvent may include one or more of ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyltetrahydrofuran, diphenyl ether and crown ether.

[0108] Among them, the gel electrolyte includes a skeleton network with a polymer as the electrolyte, combined with an ionic liquid-lithium salt.

[0109] Among them, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0110] As an example, the polymer solid electrolyte may be polyether (polyethylene oxide), polysiloxane, polycarbonate, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, a single ion polymer, polyionic liquid-lithium salt, cellulose, or the like.

[0111] As an example, the inorganic solid electrolyte may include an oxide solid electrolyte (crystalline perovskite, sodium superconducting ion conductor, garnet, amorphous LiPON film), a sulfide solid electrolyte (crystalline lithium superion conductor (lithium germanium phosphosulfide, silver germanium sulfide), amorphous sulfide) and one or more of a halide solid electrolyte, a nitride solid electrolyte and a hydride solid electrolyte.

[0112] As an example, a composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to a polymer solid electrolyte.

[0113] In some embodiments, the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0114] In some embodiments, the electrode assembly is a laminate structure.

[0115] As an example, multiple positive electrode sheets and multiple negative electrode sheets can be provided respectively, and the multiple positive electrode sheets and the multiple negative electrode sheets can be alternately stacked.

[0116] As an example, a plurality of positive electrode sheets may be provided, and the negative electrode sheet may be folded to form a plurality of stacked folded segments, with a positive electrode sheet being sandwiched between adjacent folded segments.

[0117] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of stacked folded segments.

[0118] As an example, a plurality of separators may be provided, each of which is disposed between any adjacent positive electrode sheets or negative electrode sheets.

[0119] As an example, the separator may be provided continuously, and may be provided between any adjacent positive electrode sheets or negative electrode sheets by folding or winding.

[0120] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or polygonal.

[0121] In some embodiments, the electrode assembly is provided with tabs that can conduct current from the electrode assembly. The tabs include a positive tab and a negative tab.

[0122] In some embodiments, a battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (e.g., polypropylene), a composite metal housing (e.g., a copper-aluminum composite housing), or an aluminum-plastic film.

[0123] As an example, the battery cells may be cylindrical, prismatic, soft-pack or other shaped battery cells. Prismatic battery cells include but are not limited to square-shell, blade-shaped, and polygonal batteries, such as hexagonal batteries.

[0124] For general battery cells, in order to ensure the safety of battery cells, a pressure relief structure is usually provided on the battery cells to release the internal pressure of the battery cells through the pressure relief structure, thereby effectively improving the safety of battery cells. In related technologies, the pressure relief structure is usually formed on the outer shell by an integrated molding process. For example, a notch is punched on the outer shell by a stamping device, so that when the internal pressure or temperature of the battery cell reaches a threshold, the pressure relief structure can be actuated and opened to release the internal pressure of the battery cell. However, the details such as the fit between the various components of the existing stamping equipment and the precision of the stamping are difficult to control, resulting in low precision of the notch punched on the outer shell of the battery cell, making it difficult to control the residual thickness of the notch formed integrally on the outer shell, which will affect the consistency of the notch of the battery cell, and thus is not conducive to improving the production quality of the battery cell, and will affect the pressure relief performance of the battery cell.

[0125] Based on the above considerations, in order to solve the problem that the residual thickness of the integrally formed notch groove on the outer shell of the battery cell is difficult to control, an embodiment of the present application provides a stamping device, which includes a first component, a second component, a stamping part and a limiter. The first component has an abutment surface, and the abutment surface is used to abut with the workpiece along the first direction. The second component is arranged opposite to the abutment surface along the first direction, and the second component and the first component can approach or move away from each other in the first direction. The stamping part is connected to the side of the second component facing the abutment surface, and the stamping part is used to stamp a groove on the workpiece. The limiter is arranged between the first component and the second component, and the limiter is configured to limit the minimum distance between the stamping part and the abutment surface in the first direction.

[0126] In a stamping device of this structure, the first component has an abutting surface for abutting against the workpiece along a first direction, the second component and the abutting surface are arranged opposite to each other in the first direction, and a stamping part is provided on the side of the second component facing the abutting surface, so that when the first component and the second component approach each other along the first direction, the stamping part can punch a groove on the workpiece abutting against the abutting surface, wherein, by arranging a limiter between the first component and the second component, the limiter can limit the minimum distance between the stamping part and the abutting surface when the stamping part approaches the abutting surface along the first direction and punches a groove on the workpiece, thereby controlling the residual thickness of the stamping part after punching the groove on the workpiece, thereby controlling the residual thickness of the groove after the workpiece is stamped, and thereby improving the consistency of the thickness of the bottom wall of the groove processed on the workpiece, thereby improving the processing quality of the stamping equipment.

[0127] An embodiment of the present application provides a stamping device that can improve the problem that the precision of the score grooves stamped on the outer shell of a battery cell is low, making it difficult to control the residual thickness of the score grooves integrally formed on the outer shell, resulting in poor consistency of the score grooves of the battery cell. The specific structure of the stamping device is described in detail below with reference to the accompanying drawings.

[0128] According to some embodiments of the present application, please refer to Figures 1, 2 and 3. Figure 1 is a structural schematic diagram of a stamping device 100 provided in some embodiments of the present application, Figure 2 is a front view of the stamping device 100 provided in some embodiments of the present application, and Figure 3 is a cross-sectional view of the stamping device 100 provided in some embodiments of the present application. The present application provides a stamping device 100, which includes a first component 10, a second component 20, a stamping part 30 and a limiter 40. The first component 10 has a contact surface 121, and the abutment surface 121 is used to abut with the workpiece along the first direction X. The second component 20 is arranged opposite to the abutment surface 121 along the first direction X, and the second component 20 and the first component 10 can approach or move away from each other along the first direction X. The stamping part 30 is connected to the side of the second component 20 facing the abutment surface 121, and the stamping part 30 is used to stamp a groove on the workpiece. The limiting member 40 is disposed between the first component 10 and the second component 20 . The limiting member 40 is configured to limit a minimum distance between the stamping member 30 and the abutting surface 121 in the first direction X.

[0129] Among them, the first component 10 has a contact surface 121, which is used to abut against the workpiece along the first direction X, that is, the first component 10 has a surface for abutting against the workpiece in the first direction X. This surface can cooperate with the stamping part 30 to extrude the workpiece in the first direction X, so that the stamping part 30 can punch out a groove on the workpiece. Correspondingly, this surface is the contact surface 121 of the first component 10.

[0130] For example, in FIG3 , the first direction X is the direction of gravity. Correspondingly, the first component 10 and the second component 20 are arranged along the direction of gravity, and the first component 10 is located below the second component 20 in the first direction X, so that the abutting surface 121 is a structure that supports the workpiece along the first direction X. Of course, in other embodiments, the first component 10 may also be located above the second component 20 in the first direction X, so that the abutting surface 121 of the first component 10 is a structure that presses the workpiece down along the first direction X, so that the stamping part 30 can stamp the workpiece.

[0131] Optionally, the structure of the first component 10 can be various. For example, in Figures 2 and 3, the first component 10 includes a fixed base 11 and a support base 12. The fixed base 11 and the second component 20 are arranged relative to each other along the first direction X. The support base 12 is connected to the surface of the fixed base 11 on the side facing the second component 20, and the surface of the support base 12 on the side facing the second component 20 forms an abutment surface 121 for supporting the workpiece. Correspondingly, the limiter 40 is arranged between the fixed base 11 and the movable member in the first direction X. Of course, in other embodiments, the first component 10 may also include only the fixed base 11. The fixed base 11 and the second component 20 are arranged relative to each other along the first direction X. The surface of the fixed base 11 on the side facing the second component 20 forms an abutment surface 121 for supporting the workpiece, and the limiter 40 is arranged between the fixed base 11 and the movable member in the first direction X.

[0132] It should be noted that the support seat 12 may be directly connected to the surface of the fixed base 11 on the side facing the second component 20 in the first direction X, or may be indirectly connected to the surface of the fixed base 11 on the side facing the second component 20 in the first direction X through other components. For example, in FIG3 , the support seat 12 is directly connected to the surface of the fixed base 11 on the side facing the second component 20 in the first direction X. The connection structure between the support seat 12 and the fixed base 11 may be various, such as welding, abutment, bonding, or clamping. Similarly, the support seat 12 and the fixed base 11 may also be an integral structure formed by an integral molding process. Of course, in other embodiments, the support seat 12 may also be indirectly connected to the surface of the fixed base 11 on the side facing the second component 20 in the first direction X. For example, the support seat 12 may be connected to the surface of the fixed base 11 on the side facing the second component 20 in the first direction X through an adjusting gasket, a pad or other components, that is, other components such as an adjusting gasket or a pad may be provided between the support seat 12 and the fixed base 11, so that the distance between the abutting surface 121 of the support seat 12 and the fixed base 11 in the first direction X can be adjusted by setting adjusting gaskets or pads of different thicknesses, so as to adjust the minimum distance between the abutting surface 121 and the stamping part 30 in the first direction X, so as to adjust the depth of the groove punched by the stamping part 30 on the workpiece or adjust the residual thickness of the workpiece at the groove after the groove is punched on the workpiece.

[0133] The second component 20 and the first component 10 can approach or move away from each other along the first direction X, that is, the stamping part 30 connected to the second component 20 can approach or move away from the abutting surface 121 of the first component 10 in the first direction X, so that the stamping part 30 can stamp the workpiece abutting on the abutting surface 121.

[0134] For example, in Figures 2 and 3, the first component 10 is a fixed structure, and correspondingly, the second component 20 can move relative to the first component 10 along the first direction X, so as to drive the stamping part 30 to approach the abutment surface 121 and then stamp the workpiece. In other embodiments, the second component 20 can also be a fixed structure, and correspondingly, the first component 10 can move relative to the second component 20 along the first direction X, so as to drive the abutment surface 121 to abut the workpiece and then squeeze the workpiece on the stamping part 30, thereby realizing the stamping process of the workpiece by the stamping part 30. Of course, it is also possible that both the first component 10 and the second component 20 are movable along the first direction X, so that when the first component 10 and the second component 20 move in a direction approaching each other, they can drive the stamping part 30 to approach the abutment surface 121 and then stamp the workpiece.

[0135] The stamping part 30 plays the role of stamping a groove on the workpiece. The stamping part 30 is connected to the side of the second component 20 facing the abutment surface 121, so that when the second component 20 approaches the abutment surface 121 along the first direction X, the stamping part 30 can be close to the abutment surface 121, so that the stamping part 30 can stamp a groove on the workpiece.

[0136] Similarly, the stamping part 30 may be directly connected to the surface of the second component 20 on the side facing the abutting surface 121 in the first direction X, or may be indirectly connected to the surface of the second component 20 on the side facing the abutting surface 121 in the first direction X through other components. For example, in FIG3 , the stamping part 30 is directly connected to the surface of the second component 20 on the side facing the abutting surface 121 in the first direction X. The connection structure between the stamping part 30 and the second component 20 may be various, such as welding, abutment, bonding, or clamping. Of course, in other embodiments, the stamping part 30 may also be indirectly connected to the surface of the second component 20 on the side facing the abutment surface 121 in the first direction X. For example, the stamping part 30 may be connected to the surface of the second component 20 on the side facing the abutment surface 121 in the first direction X through an adjusting gasket, a pad or other components, that is, other components such as an adjusting gasket or a pad may be provided between the stamping part 30 and the second component 20, so that the distance between one end of the stamping part 30 used for stamping the workpiece and the second component 20 in the first direction X can be adjusted by providing adjusting gaskets or pads of different thicknesses, so that the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X can be adjusted to adjust the depth of the groove punched by the stamping part 30 on the workpiece or adjust the residual thickness of the workpiece at the groove after the groove is punched on the workpiece.

[0137] The limiting member 40 is arranged between the first component 10 and the second component 20, and is configured to limit the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X. That is, the limiting member 40 can provide the first component 10 and the second component 20 with abutment in the first direction X, so that when the first component 10 and the second component 20 are both abutting against the limiting member 40, the stamping part 30 on the second component 20 cannot continue to approach the abutment surface 121 further along the first direction X, so as to achieve the limitation of the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X.

[0138] It should be noted that the structure of the limit member 40 arranged between the first component 10 and the second component 20 can be various. The limit member 40 can be connected to the first component 10 for the second component 20 to abut against, and the limit member 40 can also be connected to the second component 20 for the first component 10 to abut against. Of course, the limit member 40 can also be composed of two separate parts, and the two parts are respectively connected to the first component 10 and the second component 20, so that when the second component 20 moves close to the first component 10, the two parts of the limit member 40 can abut against each other.

[0139] In this embodiment, the first component 10 has an abutment surface 121 for abutting against the workpiece along the first direction X, the second component 20 and the abutment surface 121 are arranged opposite to each other in the first direction X, and a stamping part 30 is provided on the side of the second component 20 facing the abutment surface 121, so that when the first component 10 and the second component 20 approach each other along the first direction X, the stamping part 30 can punch a groove on the workpiece abutting on the abutment surface 121, wherein, by arranging a limit member 40 between the first component 10 and the second component 20, the limit member 40 can limit the minimum distance between the stamping part 30 and the abutment surface 121 when the stamping part 30 approaches the abutment surface 121 along the first direction X and punches a groove on the workpiece, thereby controlling the residual thickness of the stamping part 30 after punching the groove on the workpiece, so as to achieve control of the residual thickness of the groove after the workpiece is stamped, and then improve the consistency of the thickness of the bottom wall of the groove processed on the workpiece, so as to improve the processing quality of the stamping equipment 100.

[0140] According to some embodiments of the present application, referring to Figures 2 and 3, the limiting member 40 includes a first limiting portion 41 and a second limiting portion 42 arranged relatively to each other along the first direction X, and along the first direction X, one end of the first limiting portion 41 is connected to the first component 10, and one end of the second limiting portion 42 is connected to the second component 20, and the other end of the second limiting portion 42 and the other end of the first limiting portion 41 are configured to abut against each other when the first component 10 and the second component 20 approach each other along the first direction X, so as to limit the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X.

[0141] Among them, the limiting member 40 includes a first limiting portion 41 and a second limiting portion 42 arranged relatively along the first direction X, that is, the limiting member 40 includes two parts arranged separately, namely the first limiting portion 41 and the second limiting portion 42, the first limiting portion 41 and the second limiting portion 42 are arranged along the first direction X, and the first limiting portion 41 and the second limiting portion 42 are both structures extending along the first direction X.

[0142] The other end of the second limiting portion 42 and the other end of the first limiting portion 41 are configured to be able to abut against each other when the first component 10 and the second component 20 approach each other along the first direction X, that is, when the second component 20 approaches the abutment surface 121 in the first direction X, the second limiting portion 42 on the second component 20 can approach the first limiting portion 41 on the first limiting portion 41 in the first direction X, and limit the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X when the end of the first limiting portion 41 away from the first component 10 and the end of the second limiting portion 42 away from the second component 20 abut against each other.

[0143] For example, one end of the first limiting portion 41 in the first direction X is connected to the surface of the fixed base 11 of the first component 10 on the side facing the second component 20, and the other end is used for the second limiting portion 42 to abut. Similarly, one end of the second limiting portion 42 in the first direction X is connected to the surface of the fixed base 11 of the second component 20 on the side facing the first component 10, and the other end is used for the first limiting portion 41 to abut.

[0144] Optionally, the first limiting portion 41 may be connected to the fixed base 11 of the first component 10 by various structures, such as welding, clamping, or bolting. Of course, the second limiting portion 42 may also be connected to the second component 20 by various structures, such as welding, clamping, or bolting.

[0145] For example, the first limiting portion 41 and the second limiting portion 42 are both cylindrical with their axes extending along the first direction X, so that the first limiting portion 41 and the second limiting portion 42 can abut against each other and facilitate processing. Of course, in other embodiments, the first limiting portion 41 and the second limiting portion 42 can also be rectangular parallelepiped, triangular prism, pentagonal prism, or other polygonal prism shapes with their axes extending along the first direction X.

[0146] In this embodiment, the limiting member 40 is provided with a first limiting portion 41 and a second limiting portion 42 which are arranged opposite to each other along the first direction X, and one end of the first limiting portion 41 and one end of the second limiting portion 42 are respectively connected to the first component 10 and the second component 20, so that when the first component 10 and the second component 20 approach each other along the first direction X, the other end of the first limiting portion 41 and the other end of the second limiting portion 42 can abut against each other to limit the minimum distance between the stamping part 30 and the abutting surface 121 in the first direction X. The stamping equipment 100 adopting this structure can realize that the limiting collision between the second component 20 and the first component 10 occurs between the first limiting portion 41 and the second limiting portion 42 of the limiting member 40, thereby effectively alleviating the phenomenon of direct collision between the limiting member 40 and the first component 10 or the second component 20, so as to reduce the phenomenon of damage to the second component 20 or the first component 10, and thus is conducive to improving the service life and reliability of the stamping equipment 100.

[0147] According to some embodiments of the present application, the difference between the minimum stiffness of the first limiting portion 41 and the minimum stiffness of the second limiting portion 42 is less than or equal to 2×10 10 N / m. That is, the absolute value of the minimum stiffness of the first limiting portion 41 minus the minimum stiffness of the second limiting portion 42 is less than 2×10 10 N / m.

[0148] In this embodiment, by setting the difference between the minimum stiffness of the first limiting portion 41 and the minimum stiffness of the second limiting portion 42 to be less than or equal to 2×10 10 N / m, so that the minimum stiffness of the first limit part 41 and the second limit part 42 are relatively close. In this way, when the first limit part 41 and the second limit part 42 abut against each other, the one with larger stiffness of the first limit part 41 and the second limit part 42 is not likely to cause a large deformation of the one with smaller stiffness of the first limit part 41 and the second limit part 42, which is beneficial to improving the minimum distance limiting effect between the stamping part 30 and the abutting surface 121, so that the residual thickness of the groove punched out on the workpiece is more accurate, which is beneficial to improving the processing quality of the workpiece.

[0149] In some embodiments, the minimum stiffness of the first limiting portion 41 is greater than or equal to 6.25×10 10 N / m.

[0150] For example, the minimum stiffness of the first limiting portion 41 may be 6.25×10 10 N / m, 6.5×10 10 N / m, 6.75×10 10 N / m, 7×10 10 N / m, 7.25×10 10 N / m, 7.5×10 10N / m, 7.75×10 10 N / m, 8×10 10 N / m, 8.25×10 10 N / m, 8.5×10 10 N / m, 8.75×10 10 N / m, 9×10 10 N / m or 9.5×10 10 N / m, etc.

[0151] In this embodiment, by setting the minimum rigidity of the first limiting portion 41 to be greater than or equal to 6.25×10 10 N / m, so that the first limiting portion 41 has sufficient rigidity, reducing the risk of bending and deformation of the first limiting portion 41 when abutting against the second limiting portion 42, which is beneficial to improving the minimum distance limiting effect between the stamping part 30 and the abutting surface 121, and making the residual thickness of the groove punched on the workpiece more accurate, which is beneficial to improving the processing quality of the workpiece.

[0152] In some embodiments, the minimum stiffness of the second limiting portion 42 is greater than or equal to 6.25×10 10 N / m.

[0153] For example, the minimum stiffness of the second limiting portion 42 may be 6.25×10 10 N / m, 6.5×10 10 N / m, 6.75×10 10 N / m, 7×10 10 N / m, 7.25×10 10 N / m, 7.5×10 10 N / m, 7.75×10 10 N / m, 8×10 10 N / m, 8.25×10 10 N / m, 8.5×10 10 N / m, 8.75×10 10 N / m, 9×10 10 N / m or 9.5×10 10 N / m, etc.

[0154] In this embodiment, by setting the minimum rigidity of the second limiting portion 42 to be greater than or equal to 6.25×10 10 N / m, so that the second limiting portion 42 has sufficient rigidity, reducing the risk of bending and deformation of the second limiting portion 42 when abutting against the first limiting portion 41, which is beneficial to improving the minimum distance limiting effect between the stamping part 30 and the abutting surface 121, and making the residual thickness of the groove punched on the workpiece more accurate, which is beneficial to improving the processing quality of the workpiece.

[0155] According to some embodiments of the present application, as shown in FIG2 and FIG3 , along the first direction X, the difference between the length L1 of the first limiting portion 41 and the length L2 of the second limiting portion 42 is less than or equal to 10 cm. That is, the absolute value of L1 minus L2 is less than or equal to 10 cm. In other words, the difference between the distance from the end of the first limiting portion 41 that abuts the second limiting portion 42 in the first direction X to the fixed base 11 and the distance from the end of the second limiting portion 42 that abuts the first limiting portion 41 in the first direction X to the second component 20 is within 10 cm.

[0156] Exemplarily, both the first limiting portion 41 and the second limiting portion 42 are columnar structures extending along the first direction X. Correspondingly, the length difference between the first limiting portion 41 and the second limiting portion 42 is less than or equal to 10 cm.

[0157] In this embodiment, by setting the difference in length between the first limiting portion 41 and the second limiting portion 42 in the first direction X to be less than or equal to 10 cm, the lengths of the first limiting portion 41 and the second limiting portion 42 in the first direction X are close. On the one hand, the contact collision point of the first limiting portion 41 and the second limiting portion 42 can be kept away from both the first component 10 and the second component 20 to reduce the phenomenon of damage to the second component 20 or the first component 10. On the other hand, the stiffness and structural strength of the first limiting portion 41 and the second limiting portion 42 can be close, so that the first limiting portion 41 and the second limiting portion 42 abut against each other to limit the minimum distance between the stamping part 30 and the abutting surface 121 in the first direction X.

[0158] In some embodiments, referring to FIG. 2 and FIG. 3 , along the first direction X, the length L1 of the first limiting portion 41 is equal to the length L2 of the second limiting portion 42 .

[0159] In this embodiment, by setting the lengths of the first limiting portion 41 and the second limiting portion 42 in the first direction X to be equal, the stiffness and structural strength of the first limiting portion 41 and the second limiting portion 42 are further made close, so that the first limiting portion 41 and the second limiting portion 42 abut against each other to limit the minimum distance between the stamping part 30 and the abutting surface 121 in the first direction X.

[0160] According to some embodiments of the present application, as shown in Figures 1 and 2, the area of ​​the minimum cross section of the first limiting portion 41 perpendicular to the first direction X is equal to the area of ​​the minimum cross section of the second limiting portion 42 perpendicular to the first direction X.

[0161] For example, in FIG. 1 , the first limiting portion 41 and the second limiting portion 42 are both columnar structures extending along the first direction X. Correspondingly, the minimum cross-sections of the first limiting portion 41 and the second limiting portion 42 are equal.

[0162] Exemplarily, the first limiting portion 41 and the second limiting portion 42 are both cylindrical structures extending along the first direction. Correspondingly, the diameters of the first limiting portion 41 and the second limiting portion 42 are the same, and the area of ​​the end surface of the first limiting portion 41 used to abut against the second limiting portion 42 is equal to the area of ​​the end surface of the second limiting portion 42 used to abut against the first limiting portion 41.

[0163] In this embodiment, by setting the areas of the minimum cross-sections of the first limiting portion and the second limiting portion perpendicular to the first direction to be equal, the stiffness and structural strength of the first limiting portion and the second limiting portion are made close, thereby facilitating the mutual abutment of the first limiting portion and the second limiting portion to limit the minimum distance between the stamping part and the abutment surface in the first direction.

[0164] According to some embodiments of the present application, referring to FIG4 , which is a schematic structural diagram of a stamping device 100 provided in yet other embodiments of the present application, a stopper 40 has a first end 43 and a second end 44 opposite each other along a first direction X. The first end 43 is connected to the first component 10 , and the second end 44 is configured to abut against the second component 20 when the first component 10 and the second component 20 approach each other along the first direction X, thereby limiting the minimum distance between the stamping component 30 and the abutment surface 121 in the first direction X.

[0165] The limiting member 40 has a first end 43 and a second end 44 opposite to each other, that is, the limiting member 40 is an integrated structure, and the two ends of the limiting member 40 in the first direction X are the first end 43 and the second end 44 respectively.

[0166] The first end 43 is connected to the first component 10, that is, the end surface of the first end 43 of the limiting member 40 is connected to the fixed base 11 of the first component 10. The first end 43 of the limiting member 40 is connected to the surface of the fixed base 11 of the first component 10 on the side facing the second component 20 in the first direction X. Optionally, the first end 43 of the limiting member 40 can be connected to the fixed base 11 of the first component 10 in various structures, such as welding, clamping, or bolting.

[0167] The second end 44 is configured to be able to abut against the second component 20 when the first component 10 and the second component 20 approach each other along the first direction X, that is, when the abutting surface 121 of the first component 10 and the second component 20 approach each other along the first direction X, the surface of the second component 20 facing the first component 10 can abut against the end surface of the second end 44 of the limiting member 40 to limit the minimum distance between the stamping part 30 and the abutting surface 121 in the first direction X.

[0168] Illustratively, the limiting member 40 is cylindrical. Of course, in other embodiments, the limiting member 40 may also be in the shape of a cuboid, a triangular prism, a pentagonal prism, or other polygonal prisms.

[0169] In this embodiment, by connecting the first end 43 of the limit member 40 to the first component 10, the second component 20 can abut against the second end 44 of the limit member 40 when the first component 10 and the second component 20 approach each other along the first direction X, so as to achieve the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X. The structure is simple and easy to assemble and use.

[0170] According to some embodiments of the present application, referring to FIG5 , FIG5 is a schematic structural diagram of a stamping device 100 provided in still further embodiments of the present application. Along the first direction X, the limiting member 40 has a first end 43 and a second end 44 opposite each other, the second end 44 being connected to the second component 20, and the first end 43 being configured to abut against the first component 10 when the first component 10 and the second component 20 approach each other along the first direction X, thereby limiting the minimum distance between the stamping member 30 and the abutting surface 121 in the first direction X.

[0171] The limiting member 40 has a first end 43 and a second end 44 opposite to each other, that is, the limiting member 40 is an integrated structure, and the two ends of the limiting member 40 in the first direction X are the first end 43 and the second end 44 respectively.

[0172] The second end 44 is connected to the second component 20, that is, the end surface of the second end 44 of the limiting member 40 is connected to the second component 20. The second end 44 of the limiting member 40 is connected to the surface of the second component 20 on the side facing the fixed base 11 of the first component 10 in the first direction X. Optionally, the second end 44 of the limiting member 40 can be connected to the second component 20 in various structures, such as welding, clamping, or bolting.

[0173] The first end 43 is configured to be able to abut against the first component 10 when the first component 10 and the second component 20 approach each other along the first direction X, that is, when the abutting surface 121 of the first component 10 and the second component 20 approach each other along the first direction X, the limiting member 40 on the second component 20 can approach the fixed base 11 of the first component 10, and when the end face of the first end 43 of the limiting member 40 abuts against the fixed base 11 of the first component 10, the minimum distance between the stamping part 30 and the abutting surface 121 in the first direction X is limited.

[0174] Illustratively, the limiting member 40 is cylindrical. Of course, in other embodiments, the limiting member 40 may also be in the shape of a cuboid, a triangular prism, a pentagonal prism, or other polygonal prisms.

[0175] In this embodiment, by connecting the second end 44 of the limit member 40 to the second component 20, the second component 20 can achieve the limit member 40 approaching the first component 10 when the first component 10 and the second component 20 approach each other along the first direction X, so that the first end 43 of the limit member 40 can abut against the first component 10 to achieve the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X. The structure is simple and easy to assemble and use.

[0176] According to some embodiments of the present application, as shown in Figures 1, 2 and 3, the abutment surface 121 is used to support the workpiece along the first direction X, and the second component 20 can move relative to the first component 10 along the first direction X to drive the stamping part 30 to stamp a groove on the workpiece.

[0177] The abutting surface 121 is used to support the workpiece along the first direction X, that is, the first direction X is the direction of gravity, and the first component 10 is located below the second component 20, so that the abutting surface 121 is a structure arranged upwardly facing the second component 20 in the first direction X.

[0178] The second component 20 can move relative to the first component 10 along the first direction X, that is, the second component 20 is a structure that can move relative to the first component 10 in the first direction X, so that the second component 20 can move closer to or farther away from the first component 10 in the first direction X.

[0179] In this embodiment, the abutment surface 121 of the first component 10 is set to support the workpiece along the first direction X, and the second component 20 is set to a structure that can move relative to the first component 10 along the first direction X, so that the workpiece is placed on the abutment surface 121 of the first component 10 along the first direction X, and the second component 20 drives the stamping part 30 to approach the abutment surface 121 along the first direction X and stamp the workpiece. This structure facilitates the stamping part 30 to stamp grooves on the workpiece, which is beneficial to improving the stamping quality of the workpiece, and facilitates placing the workpiece on the stamping equipment 100 for processing and removing it from the stamping equipment 100, which is beneficial to reducing the processing difficulty of the workpiece and improving the stamping efficiency of the workpiece.

[0180] According to some embodiments of the present application, as shown in Figures 1, 2, and 3, the first component 10 may include a fixed base 11 and a support base 12. The fixed base 11 is disposed opposite the second component 20 along a first direction X. The support base 12 is connected to a side of the fixed base 11 facing the second component 20 along the first direction X, and the side of the support base 12 facing the second component 20 forms an abutment surface 121. A stopper 40 is disposed between the fixed base 11 and the second component 20 along the first direction X.

[0181] The fixed base 11 is arranged opposite to the second component 20 along the first direction X, that is, the fixed base 11 and the second component 20 are arranged in the first direction X and face each other.

[0182] The support seat 12 is connected to the side of the fixed base 11 facing the second component 20 along the first direction X, that is, the support seat 12 is connected to the surface of the fixed base 11 on the side facing the second component 20 in the first direction X. Optionally, the structure in which the support seat 12 is connected to the fixed base 11 can be various, such as welding connection, bolt connection or clamping, etc.

[0183] The support seat 12 has a contact surface 121 formed on one side facing the second component 20 , that is, the end surface of the support seat 12 away from the fixed base 11 in the first direction X is used to support the workpiece. In other words, the workpiece is placed on the support seat 12 along the first direction X.

[0184] Along the first direction X, the limit member 40 is arranged between the fixed base 11 and the second component 20, that is, the limit member 40 is used to limit the minimum distance between the fixed base 11 and the second component 20 in the first direction X, so as to limit the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X.

[0185] In this embodiment, the first component 10 is provided with a fixed base 11 and a support base 12, the support base 12 is connected to the side of the fixed base 11 facing the second component 20, and the side of the support base 12 facing the second component 20 forms an abutment surface 121 for supporting the workpiece. On the one hand, the stamping equipment 100 adopting this structure is convenient for supporting workpieces of different structures and shapes, and is beneficial to reducing the stamping stroke of the stamping part 30 in the first direction X. On the other hand, it is only necessary to set the limiter 40 between the fixed base 11 and the second component 20 to limit the minimum distance between the stamping part 30 connected to the second component 20 and the abutment surface 121, which is beneficial to reduce the assembly difficulty of the limiter 40.

[0186] In some embodiments, as shown in Figure 3, the stamping part 30 forms a stamping end 31 for stamping a groove on the workpiece at one end away from the second part 20 in the first direction X. Along the first direction X, the sum of the distance from the stamping end 31 to the second part 20 and the distance from the abutting surface 121 to the fixed base 11 is less than the height dimension of the limit member 40.

[0187] Among them, the end of the stamping part 30 away from the second component 20 in the first direction X forms a stamping end 31 for stamping a groove on the workpiece, that is, the end of the stamping part 30 away from the second component 20 in the first direction X is the stamping end 31 of the stamping part 30, and the stamping end 31 is used to punch a groove on the workpiece when the second component 20 drives the stamping part 30 close to the abutment surface 121.

[0188] The distance from the stamping end 31 to the second component 20 is the distance between one end of the stamping part 30 used for stamping on the workpiece and the surface of the second component 20 facing the fixed base 11. It should be noted that in the embodiment where the stamping part 30 is directly connected to the surface of the second component 20 on the side facing the abutment surface 121 in the first direction X, the distance from the stamping end 31 to the second component 20 is the length of the stamping part 30 in the first direction X. In the embodiment where the stamping part 30 is indirectly connected to the surface of the second component 20 on the side facing the abutment surface 121 in the first direction X through other components, that is, other components are provided between the stamping part 30 and the second component 20, the distance from the stamping end 31 to the second component 20 is the sum of the length of the stamping part 30 in the first direction X and the thickness of other components provided between the stamping part 30 and the second component 20. 3 , the distance between the punching end 31 and the second component 20 is D1 , that is, the distance between one end of the punching part 30 used for punching on the workpiece and the surface of the second component 20 facing the fixed base 11 .

[0189] The distance from the abutment surface 121 to the fixed base 11 is the distance between the abutment surface 121 of the support seat 12 and the surface of the fixed base 11 facing the second component 20. It should be noted that in the embodiment where the support seat 12 is directly connected to the surface of the fixed base 11 facing the second component 20 in the first direction X, the distance from the abutment surface 121 to the fixed base 11 is the length of the support seat 12 in the first direction X. In the embodiment where the support seat 12 is indirectly connected to the surface of the fixed base 11 facing the second component 20 in the first direction X through other components, that is, other components are provided between the support seat 12 and the fixed base 11, the distance from the abutment surface 121 to the fixed base 11 is the sum of the length of the support seat 12 in the first direction X and the thickness of other components provided between the support seat 12 and the fixed base 11. 3 , the distance between the abutting surface 121 and the fixed base 11 is D2 .

[0190] The height dimension of the limiter 40 is the length of the limiter 40 disposed between the fixed base 11 and the second component 20 in the first direction X. It should be noted that in the embodiment where the limiter 40 includes a first limiter portion 41 and a second limiter portion 42 disposed separately, the height of the limiter 40 is the sum of the length of the first limiter portion 41 in the first direction X and the length of the second limiter portion 42 in the first direction X. Correspondingly, as shown in FIG3 , the height dimension L of the limiter 40 is the sum of the length L1 of the first limiter portion 41 in the first direction X and the length L2 of the second limiter portion 42 in the first direction X. Of course, in FIG4 and FIG5 , the limiter 40 is an integral structure, and the height dimension L of the limiter 40 is the length of the limiter 40 in the first direction X, that is, the distance L from the first end 43 of the limiter 40 to the second end 44 of the limiter 40 in the first direction X.

[0191] In this embodiment, by setting the sum of the distance from the stamping end 31 of the stamping part 30 to the second component 20 in the first direction X and the distance from the abutment surface 121 of the support seat 12 to the fixed base 11 in the first direction X to be smaller than the height dimension of the limit member 40, the stamping part 30 is still in a state of not contacting the abutment surface 121 of the support seat 12 when the second component 20 and the fixed base 11 are restricted by the limit member 40, thereby effectively alleviating the phenomenon that the stamping part 30 punches through the workpiece placed on the abutment surface 121.

[0192] In some embodiments, as shown in FIG. 1 and FIG. 2 , there are multiple limiting members 40 , and the multiple limiting members 40 are arranged around the support seat 12 .

[0193] The plurality of limiting members 40 are disposed around the support base 12 , that is, the plurality of limiting members 40 are arranged at intervals along the circumference of the support base 12 .

[0194] 1 , the stamping device 100 is provided with four stoppers 40, and the four stoppers 40 surround the outer side of the support base 12. Of course, in other embodiments, the number of the stoppers 40 may be one, two, three, five or six.

[0195] In this embodiment, the stamping equipment 100 is provided with a plurality of limit members 40, and the plurality of limit members 40 are a structure arranged around the support seat 12, so that the plurality of limit members 40 are a structure arranged at intervals along the circumference of the support seat 12. On the one hand, it can further improve the effect of limiting the second component 20 and the fixed base 11, so as to improve the stability and reliability of the limit members 40 in limiting the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X. On the other hand, it can improve the balance and stability of the force exerted by the limit members 40 on the second component 20 and the fixed base 11, so as to alleviate the phenomenon that the fixed base 11 and the second component 20 are tilted due to local force, thereby helping to improve the stability and reliability of the stamping workpiece of the stamping part 30.

[0196] According to some embodiments of the present application, as shown in Figures 2 and 3, the stamping device 100 may further include a clamping mechanism 50. The clamping mechanism 50 is connected to the second component 20 and is used to press the workpiece against the abutment surface 121 when the first component 10 and the second component 20 approach each other along the first direction X.

[0197] The clamping mechanism 50 is provided on the second component 20 , so that when the first component 10 and the second component 20 approach each other along the first direction X, the clamping mechanism 50 can be driven to abut against the workpiece, so that the clamping mechanism 50 can press the workpiece against the abutting surface 121 .

[0198] In this embodiment, the stamping equipment 100 is also provided with a clamping mechanism 50, which is connected to the second component 20, and the clamping mechanism 50 can press the workpiece on the abutment surface 121 when the first component 10 and the second component 20 approach each other along the first direction X. On the one hand, it can improve the stability of the workpiece during the stamping process to reduce the shaking or slipping of the workpiece during the stamping process, which is beneficial to improving the stamping accuracy of the stamping equipment 100. On the other hand, it can alleviate the phenomenon of warping or bending of the workpiece when it is subjected to the stamping pressure of the stamping part 30, which is beneficial to improving the stamping quality of the stamping equipment 100.

[0199] According to some embodiments of the present application, please continue to refer to Figures 2 and 3. The clamping mechanism 50 may include a clamping seat 51 and an elastic member 52. The clamping seat 51 is located on the side of the second component 20 facing the abutment surface 121 along the first direction X. The clamping seat 51 is used to press the workpiece onto the abutment surface 121. The elastic member 52 is connected between the clamping seat 51 and the second component 20 along the first direction X. The elastic member 52 is configured to be compressed along the first direction X when the clamping seat 51 abuts against the workpiece.

[0200] One end of the elastic member 52 is connected to a side of the second component 20 facing the first component 10 in the first direction X, and the side of the pressing seat 51 facing the second component 20 is connected to an end of the elastic member 52 away from the second component 20, so that the elastic member 52 is connected between the pressing seat 51 and the second component 20 in the first direction X, so that when the pressing seat 51 abuts against the workpiece, the elastic member 52 can be compressed along the first direction X and provide elastic force to the pressing seat 51. It should be noted that the spatial dimension in which the elastic member 52 can be compressed in the first direction X is greater than the distance that the stamping part 30 moves relative to the pressing seat 51 in the first direction X after the pressing seat 51 and the workpiece abut against each other, so that the stamping part 30 can punch a groove on the workpiece.

[0201] Exemplarily, the elastic member 52 is a spring connected between the pressing seat 51 and the second component 20 . Of course, in other embodiments, the elastic member 52 may also be an elastic rubber or spring sheet connected between the pressing seat 51 and the second component 20 .

[0202] It should be noted that, in some embodiments, the pressing mechanism 50 may also have other structures. For example, the pressing mechanism 50 may be provided with only an elastic member 52. The elastic member 52 is connected to the side of the second component 20 facing the abutment surface 121 in the first direction X. The elastic member 52 can abut against the workpiece when the first component 10 and the second component 20 approach each other in the first direction X, thereby pressing the workpiece against the abutment surface 121. In this embodiment, the elastic member 52 may be a spring or elastic rubber.

[0203] In this embodiment, the pressing mechanism 50 is provided with a pressing seat 51 and an elastic member 52. The pressing seat 51 is used to abut against the workpiece placed on the abutting surface 121 to press the workpiece against the abutting surface 121. The pressing seat 51 is a structure connected to the second component 20 through the elastic member 52. When the second component 20 drives the pressing seat 51 to press the workpiece against the abutting surface 121, the elastic member 52 can be compressed along the first direction X and provide an elastic force to the pressing seat 51, so that the pressing seat 51 presses the workpiece against the abutting surface 121. Pressed on the abutment surface 121, the clamping mechanism 50 with this structure can, on the one hand, play a certain buffering role through the elastic member 52 to alleviate the phenomenon of rigid contact or rigid collision between the clamping seat 51 and the workpiece, which is beneficial to reducing the risk of the clamping seat 51 damaging the workpiece; on the other hand, the elastic member 52 can provide elastic force for the clamping seat 51, so that the clamping seat 51 can press the workpiece more firmly on the abutment surface 121, which is beneficial to improving the stability and reliability of the clamping seat 51 in clamping the workpiece.

[0204] In some embodiments, as shown in FIG3 , a stamping end 31 for stamping a groove in a workpiece is formed at one end of the stamping member 30 away from the second component 20 in the first direction X. When the pressing seat 51 is not in contact with the workpiece, the side of the pressing seat 51 that is in contact with the workpiece is closer to the abutment surface 121 than the stamping end 31 along the first direction X. In other words, before the pressing seat 51 abuts the workpiece, the pressing seat 51 is closer to the abutment surface 121 than the stamping end 31 in the first direction X.

[0205] In the embodiment in which the pressing seat 51 is directly connected to the side of the second component 20 facing the abutment surface 121 through the elastic member 52, when the pressing seat 51 is not in contact with the workpiece, along the first direction X, the side of the pressing seat 51 that is used to abut the workpiece is closer to the abutment surface 121 than the punching end 31, that is, the sum of the free length of the elastic member 52 and the thickness of the pressing seat 51 is greater than the distance from the punching end 31 to the second component 20. The free length of the elastic member 52, also called the natural length, refers to the original length of the elastic member 52 in the first direction X when the elastic member 52 is not subjected to an external force (such as tension or pressure) in the first direction X. The thickness of the pressing seat 51 is the distance between the surface of the pressing seat 51 that is used to abut the workpiece in the first direction X and the surface of the pressing seat 51 that is used to connect to the elastic member 52.

[0206] In this embodiment, the side of the pressing seat 51 that abuts against the workpiece is set to be closer to the abutment surface 121 of the support seat 12 than the stamping end 31 of the stamping part 30 when the pressing seat 51 is not in contact with the workpiece, so that when the abutment surface 121 of the first component 10 and the second component 20 approach each other along the first direction X, the pressing seat 51 of the pressing mechanism 50 will contact the workpiece preferentially compared to the stamping part 30, so that the pressing seat 51 of the pressing mechanism 50 can press the workpiece on the abutment surface 121 before the stamping part 30 is stamped. This can reduce the phenomenon of workpiece slippage or warping caused by the stamping part 30 contacting the workpiece, which is beneficial to improving the stability and reliability of the stamping part 30 in stamping the workpiece.

[0207] According to some embodiments of the present application, as shown in FIG3 , the pressing seat 51 is provided with a through hole 511 for the stamping part 30 to pass through, and the through hole 511 penetrates the pressing seat 51 along the first direction X. Along the first direction X, at least a portion of the projection of the stamping part 30 is located within the through hole 511 .

[0208] In which, along the first direction X, at least part of the projection of the stamping part 30 is located in the through hole 511, that is, the projection of the stamping part 30 can be only the part used for punching on the workpiece after passing through the through hole 511 and is located in the through hole 511, or the entire projection of the stamping part 30 can be located in the through hole. For example, in Figure 3, the entire projection of the stamping part 30 in the first direction X is located in the through hole 511.

[0209] In this embodiment, the pressing member is provided with a through hole 511 in the first direction X for the punching member 30 to pass through, so that the punching member 30 can punch the workpiece pressed by the pressing seat 51 after passing through the through hole 511. The stamping equipment 100 with this structure facilitates the punching member 30 to punch the workpiece, and the pressing seat 51 is a structure arranged around the punching member 30, so that the pressing seat 51 can press the entire area of ​​the workpiece around the punching member 30 on the abutment surface 121, thereby further improving the effect of the pressing seat 51 on pressing the workpiece. In addition, by locating the projection of the punching member 30 in the first direction X within the through hole 511, the scraping phenomenon between the punching member 30 and the pressing seat 51 when passing through the through hole 511 of the pressing seat 51 is reduced.

[0210] According to some embodiments of the present application, as shown in FIG. 2 and FIG. 3 , there are multiple elastic members 52 , and the multiple elastic members 52 are arranged around the stamping member 30 .

[0211] The plurality of elastic members 52 are disposed around the stamping member 30 , that is, the plurality of elastic members 52 are arranged at intervals along the circumference of the stamping member 30 .

[0212] 2 , the pressing mechanism 50 is provided with two elastic members 52 , and the two elastic members 52 are respectively located on both sides of the stamping member 30 in a direction perpendicular to the first direction X. Of course, in other embodiments, the number of the limiting members 40 may also be one, three, four, five, or six, etc.

[0213] In this embodiment, the clamping mechanism 50 is provided with a plurality of elastic members 52, and the plurality of elastic members 52 are a structure arranged around the stamping part 30, so that the plurality of elastic members 52 are a structure arranged at intervals along the circumference of the stamping part 30. On the one hand, the clamping seat 51 can be realized as a structure interconnected with the second component 20 through a plurality of elastic members 52, which is beneficial to further improve the stability of the clamping seat 51 connected to the second component 20. On the other hand, the force balance of the clamping seat 51 can be achieved to alleviate the phenomenon that the clamping seat 51 is locally subjected to the elastic force of the elastic member 52, thereby helping to further improve the effect of the clamping seat 51 in pressing the workpiece on the abutment surface 121.

[0214] According to some embodiments of the present application, with reference to Figures 2 and 3, and further with reference to Figure 6, Figure 6 is a schematic structural diagram of a stamping part of a stamping device provided in some embodiments of the present application. The stamping part 30 may include a connecting portion 32 and a cutter head 33. The connecting portion 32 is connected to the side of the second component 20 facing the abutment surface 121. The cutter head 33 is protruding from the surface of the connecting portion 32 facing away from the second component 20 in the first direction X, and the end of the cutter head 33 away from the connecting portion 32 in the first direction X forms a stamping end 31, which is used to stamp a groove on the workpiece.

[0215] Among them, the connecting portion 32 is connected to the side of the second component 20 facing the abutment surface 121, that is, the stamping part 30 is a structure in which the connecting portion 32 is connected to the second component 20. It should be noted that in the embodiment in which the stamping part 30 is directly connected to the surface of the second component 20 on the side facing the abutment surface 121 in the first direction X, the connecting portion 32 of the stamping part 30 is a structure directly connected to the surface of the second component on the side facing the abutment surface 121 in the first direction X. In the embodiment in which the stamping part 30 is indirectly connected to the surface of the second component 20 on the side facing the abutment surface 121 in the first direction X through other components, for example, other components such as adjusting gaskets or pads, other components such as adjusting gaskets or pads are arranged between the second component 20 and the connecting portion 32 in the first direction X to connect the second component 20 and the connecting portion 32.

[0216] The blade head 33 is protruding from a surface of the connecting portion 32 facing away from the second component 20 in the first direction X. That is, the blade head 33 is connected to an end surface of the connecting portion 32 facing the abutting surface 121 in the first direction X.

[0217] The end of the cutting head 33 that is away from the connecting portion 32 in the first direction X forms a stamping end 31. That is, the end of the cutting head 33 that faces the abutting surface 121 in the first direction X serves as the stamping end 31 of the stamping member 30, enabling the cutting head 33 to stamp a groove in the workpiece. It should be noted that the length of the stamping member 30 in the first direction X is the sum of the length of the connecting portion 32 in the first direction X and the length of the cutting head 33 in the first direction X.

[0218] For example, in Figure 6, the cross-section of the cutter head 33 perpendicular to the first direction X is in an "H"-shaped structure. Correspondingly, the stamping end 31 of the cutter head 33 is also in an "H"-shaped structure, so that the cutter head 33 can punch out an "H"-shaped groove on the workpiece. Of course, in other embodiments, if it is necessary to punch out a groove with a "C"-shaped, "V"-shaped or annular structure on the workpiece, it is only necessary to set the cross-section of the cutter head 33 perpendicular to the first direction X to a corresponding shape.

[0219] Optionally, in Figure 6, the cross-section of the cutter head 33 perpendicular to the first direction X is an "H"-shaped structure. Correspondingly, the shape of the connecting portion 32 can be various. For example, the connecting portion 32 can be a prism or cylindrical structure extending along the first direction X. Of course, the connecting portion 32 can also be a structure with the same shape as the cutter head 33. For example, in Figure 6, the connecting portion 32 is a rectangular structure extending along the first direction X. Of course, in other embodiments, refer to Figure 7, which is a structural schematic diagram of stamping parts of stamping equipment provided in some embodiments of the present application in other embodiments. The shape of the cross-section of the connecting portion 32 perpendicular to the first direction X is the same as the shape of the cross-section of the cutter head 33 perpendicular to the first direction X, and both are "H"-shaped structures.

[0220] It should be noted that the connecting portion 32 and the cutter head 33 of the stamping part 30 can be an integrally formed structure. For example, the connecting portion 32 and the cutter head 33 of the stamping part 30 can be made by an integral forming process such as stamping, casting or milling. Of course, the connecting portion 32 and the cutter head 33 of the stamping part 30 can also be separately arranged structures. For example, the cutter head 33 can be connected to the connecting portion 32 on the end away from the second component 20 in the first direction X by welding, bonding or other structures.

[0221] In some embodiments, the cutter head 33 may include a first cutter body and a second cutter body. The first cutter body is protruding from the surface of the connecting portion 32 on the side facing away from the second component 20 in the first direction X. The second cutter body is protruding from the surface of the first cutter body on the side facing away from the connecting portion 32 in the first direction X. The cross-section of the second cutter body perpendicular to the first direction X is the same as the cross-section of the first cutter body perpendicular to the first direction X. The second cutter body is used to punch a groove on a workpiece. The end of the second cutter body away from the first cutter body in the first direction X forms a punching end 31. A cutter head 33 with this structure can improve the structural strength of the root of the cutter head 33 through the first cutter body, and can punch a groove on the workpiece through the second cutter body.

[0222] In this embodiment, the stamping part 30 is provided with a connecting portion 32 and a cutter head 33, and the cutter head 33 is a structure connected to the second component 20 through the connecting portion 32, so as to facilitate the assembly of the stamping part 30 to the second component 20. On the one hand, it can reduce the assembly difficulty between the cutter head 33 of the stamping part 30 and the second component 20, and on the other hand, it can improve the stability and reliability of the cutter head 33 during the stamping process of the workpiece.

[0223] According to some embodiments of the present application, as shown in FIG. 2 , the stamping part 30 is detachably connected to the second component 20 .

[0224] The stamping part 30 is connected to the surface of the second component 20 on the side facing the first component 10 in the first direction X. The detachable connection between the stamping part 30 and the second component 20 can be of various structures, such as a clamping connection or a bolt connection. It should be noted that in the embodiment where the stamping part 30 includes a connecting portion 32 and a cutting head 33, the connecting portion 32 is detachably connected to the second component 20.

[0225] In this embodiment, by detachably connecting the stamping part 30 to the second component 20, the stamping part 30 can be quickly disassembled and replaced. On the one hand, it is convenient to replace stamping parts 30 of different models to perform stamping processing on the workpiece, which is beneficial to expanding the scope of application of the stamping equipment 100. On the other hand, when the stamping part 30 is damaged or worn, it can be replaced or repaired, which is beneficial to reducing the later maintenance cost of the stamping equipment 100.

[0226] According to some embodiments of the present application, with reference to Figures 8, 9, and 10, Figure 8 is a schematic structural diagram of a production system 1000 provided in some embodiments of the present application, Figure 9 is a front view of a production system 1000 provided in some embodiments of the present application, and Figure 10 is a cross-sectional view of a production system 1000 provided in some embodiments of the present application. The present application also provides a production system 1000 comprising a workpiece and a stamping apparatus 100 according to any of the above schemes, wherein the workpiece is configured to abut against an abutment surface 121 along a first direction X.

[0227] For example, in Figures 9 and 10, the workpiece is the shell 61 of the outer shell 60 of the battery cell 200, that is, the stamping part 30 of the stamping device 100 is configured to stamp a groove on the shell 61 of the outer shell 60. With reference to Figures 9 and 10, and further to Figures 11 and 12, Figure 11 is an exploded view of the structure of the battery cell 200 provided in some embodiments of the present application, and Figure 12 is a schematic structural diagram of the shell 61 of the outer shell 60 of the battery cell 200 provided in some embodiments of the present application. The battery cell 200 includes a shell 60, an electrode assembly 70, and an electrolyte. The electrode assembly 70 and the electrolyte are both accommodated in the shell 60. The shell 60 includes a shell 61 and an end cap 62. A housing 61 is formed with a housing 61 having an opening 612. That is, the shell 61 is a hollow structure with at least one end open. The end cap 62 covers the opening 612 of the shell 61 and forms a sealed connection to form a sealed space for accommodating the electrode assembly 70 and the electrolyte.

[0228] According to some embodiments of the present application, as shown in Figures 9, 10, 11, and 12, the workpiece is a shell 61 of the outer shell 60 of the battery cell 200. The shell 61 has an interior forming a receiving cavity 611 having an opening 612, and the shell 61 includes a wall portion 613. A portion of the first component 10 is inserted into the receiving cavity 611 through the opening 612 to position the shell 61, and the abutment surface 121 is used to abut against the wall portion 613 along the first direction X. The stamping member 30 is used to stamp a groove on a side of the wall portion 613 facing away from the abutment surface 121.

[0229] Exemplarily, in Figures 10 and 12, the shell 61 is a structure in which an opening 612 is formed at one end in the first direction X, that is, the shell 61 includes a wall portion 613 and a side wall 614, and the side wall 614 is arranged around the wall portion 613. Along the first direction X, one end of the side wall 614 is connected to the wall portion 613, and the other end is enclosed to form an opening 612, so that the side wall 614 and the wall portion 613 jointly define a accommodating cavity 611 with an opening 612 formed in the first direction X.

[0230] For example, in Figures 9 and 10, the first component 10 is located below the second component 20 in the first direction X, and the shell 61 is mounted on the support seat 12, that is, the support seat 12 is inserted into the accommodating cavity 611 through the opening 612, and the abutting surface 121 of the support seat 12 supports the wall 613 of the shell 61 along the first direction X, and the side wall 614 surrounds the outside of the support seat 12, so that the stamping part 30 can stamp a groove on the side of the wall 613 of the shell 61 facing away from the accommodating cavity 611. Of course, in some embodiments, the wall portion 613 may also be the side wall 614 of the shell 61, that is, the workpiece is the side wall 614 of the shell 61, and the stamping part 30 is used to stamp a groove on the side wall 614 of the shell 61. In this embodiment, the opening 612 of the shell 61 is formed at at least one end of the shell 61 in a direction perpendicular to the first direction X. The opening 612 may be formed at one end of the shell 61 in a direction perpendicular to the first direction X, or openings 612 may be formed at both ends, so that part of the first component 10 is inserted into the accommodating cavity 611 of the shell 61 from the opening 612 in a direction perpendicular to the first direction X, so that the abutting surface 121 of the first component 10 can support the side wall 614 of the shell 61 along the first direction X, so that the stamping part 30 can stamp a groove on the side wall 614 along the first direction X. Similarly, in other embodiments, the first component 10 may also be located above the second component 20 in the first direction X. Correspondingly, after the first component 10 is inserted into the accommodating cavity 611 of the shell 61 along the first direction X, the abutting surface 121 of the first component 10 is used to abut against the wall 613 of the shell 61 downward along the first direction X, and apply pressure downward to the wall 613 of the shell 61 to cooperate with the stamping part 30 to stamp a groove on the side of the wall 613 of the shell 61 away from the accommodating cavity 611.

[0231] It should be noted that, in other embodiments, the workpiece may also be the end cover 62 of the housing 60 of the battery cell 200 , that is, the stamping part 30 of the stamping device 100 is configured to stamp a groove on the end cover 62 of the housing 60 .

[0232] In this embodiment, the workpiece is the shell 61 of the outer shell 60 of the battery cell 200, and part of the first component 10 is inserted into the accommodating cavity 611 of the shell 61, so that the abutting surface 121 of the first component 10 can abut against the wall 613 of the shell 61, so that the abutting surface 121 of the first component 10 can abut against the wall 613 of the shell 61 while also positioning the shell 61 through the first component 10, so as to realize the stamping processing of the stamping part 30 on the wall 613 of the shell 61. The production system 1000 adopting this structure can improve the stability and reliability of the stamping equipment 100 in stamping workpieces, and reduce the risk of shaking or slipping of the wall 613 of the shell 61 during the stamping process, which is conducive to improving the accuracy of the stamping grooves of the stamping part 30 on the wall 613 of the shell 61.

[0233] According to some embodiments of the present application, referring to Figures 9, 10, and 12, the workpiece is a housing 61 of a battery cell 200. The housing 61 includes a wall portion 613 and a side wall 614. The side wall 614 surrounds the wall portion 613. Along a first direction X, one end of the side wall 614 is connected to the wall portion 613, and the other end encloses an opening 612. The side wall 614 and the wall portion 613 jointly define a receiving cavity 611. Along the first direction X, a portion of the first component 10 is inserted into the receiving cavity 611 through the opening 612 to position the housing 61, and the abutment surface 121 is used to abut against the wall portion 613 along the first direction X. The stamping member 30 is used to stamp a groove on the side of the wall portion 613 facing away from the abutment surface 121.

[0234] Among them, part of the first component 10 is inserted into the accommodating cavity 611 from the opening 612, that is, the shell 61 is sleeved on the first component 10. In the implementation where the first component 10 includes a fixed base 11 and a support seat 12, and the surface of the support seat 12 facing the side of the second component 20 forms a contact surface 121, the support seat 12 is inserted into the accommodating cavity 611 of the shell 61, and the side wall 614 is arranged around the support seat 12.

[0235] In this embodiment, the shell 61 includes a side wall 614 and a wall portion 613. The side wall 614 is arranged around the wall portion 613. One end of the side wall 614 in the first direction X is connected to the wall portion 613, and the other end is enclosed to form an opening 612, so that the wall portion 613 and the opening 612 are arranged along the first direction X, so that it is convenient for a portion of the first component 10 to be inserted into the accommodating cavity 611 from the opening 612 along the first direction X and then abut against the wall portion 613. The production system 1000 adopting this structure can reduce the difficulty of the wall portion 613 of the shell 61 abutting against the abutting surface 121 of the first component 10, and facilitates the stamping of the stamping part 30, which is beneficial to reducing the processing difficulty of stamping grooves on the shell 61, thereby improving production efficiency.

[0236] According to some embodiments of the present application, as shown in FIG9 and FIG10 , the abutting surface 121 is used to support the wall portion 613 along the first direction X, and the second component 20 is movable relative to the first component 10 along the first direction X to drive the stamping member 30 to stamp a groove on the side of the wall portion 613 facing away from the abutting surface 121. In other words, the first component 10 is located below the second component 20 in the first direction X, and the housing 61 is a structure with the opening 612 facing downward in the first direction X and is sleeved on the first component 10.

[0237] In this embodiment, the abutment surface 121 of the first component 10 is set to support the wall portion 613 along the first direction X, and the second component 20 is set to a structure that can move relative to the first component 10 along the first direction X, so that the wall portion 613 is placed on the abutment surface 121 of the first component 10 along the first direction X, and the second component 20 drives the stamping part 30 to approach the abutment surface 121 along the first direction X and stamp the wall portion 613. This structure facilitates the stamping part 30 to stamp a groove on the wall portion 613 of the shell 61, which is beneficial to improving the stamping quality of the wall portion 613, and facilitates the shell 61 to be mounted on the first component 10 for stamping processing and to be removed from the first component 10, which is beneficial to reducing the processing difficulty of the shell 61 and improving the processing efficiency of the shell 61.

[0238] According to some embodiments of the present application, referring to Figures 10 and 12, and further referring to Figure 13, Figure 13 is a partial enlarged view of point A of the production system 1000 shown in Figure 10. The first component 10 includes a fixed base 11 and a support base 12. The fixed base 11 and the second component 20 are arranged opposite each other along a first direction X. The support base 12 is connected to the side of the fixed base 11 facing the second component 20. The support base 12 is inserted into the accommodating cavity 611, and the side of the support base 12 facing the second component 20 forms an abutment surface 121. The limiter 40 is disposed between the fixed base 11 and the second component 20. The sidewall 614 surrounds the outer side of the support base 12, and a gap is set between the sidewall 614 and the support base 12. In other words, after the support base 12 is inserted into the accommodating cavity 611 of the housing 61, a gap is formed between the sidewall 614 of the housing 61 and the support base 12.

[0239] In this embodiment, the first component 10 includes a fixed base 11 and a support seat 12, and the support seat 12 is a structure inserted into the accommodating cavity 611 of the shell 61 to position the shell 61, wherein the side wall 614 of the shell 61 is set to a structure that surrounds the outside of the support seat 12 and has a gap with the support seat 12, so that the support seat 12 can be inserted into the accommodating cavity 611 of the shell 61 or withdrawn from the accommodating cavity 611 of the shell 61, thereby reducing the difficulty of inserting the support seat 12 into or withdrawing from the accommodating cavity 611 of the shell 61, and can reduce the scratching phenomenon between the side wall 614 of the shell 61 and the support seat 12.

[0240] 10 and 13 , the surface of the wall portion 613 facing the accommodating cavity 611 is connected to the surface of the side wall 614 facing the accommodating cavity 611 via an arc surface 615. Along the first direction X, the projection of the arc surface 615 is located within the gap between the side wall 614 and the support base 12.

[0241] Among them, the surface of the wall portion 613 facing the accommodating cavity 611 and the surface of the side wall 614 facing the accommodating cavity 611 are connected through the arc surface 615. That is, the inner surface of the wall portion 613 of the shell 61 and the inner surface of the side wall 614 are connected by the arc surface 615, so that an arc chamfer structure is formed between the inner surface of the wall portion 613 and the inner surface of the side wall 614.

[0242] Along the first direction X, the projection of the arc surface 615 is located in the gap between the side wall 614 and the support seat 12, that is, the gap formed between the side wall 614 and the support seat 12 has a radial dimension greater than the radial dimension of the arc surface 615 in the support seat 12, so that the abutting surface 121 of the support seat 12 and the arc surface 615 are a spaced-apart structure.

[0243] In this embodiment, the arc surface 615 formed between the surface of the wall portion 613 facing the accommodating cavity 611 and the surface of the side wall 614 facing the accommodating cavity 611 is set so that the projection in the first direction X is located within the gap between the side wall 614 and the support seat 12, so that the support seat 12 can avoid the arc chamfer structure formed between the inner surface of the wall portion 613 and the inner surface of the side wall 614, so as to reduce the interference between the abutting surface 121 and the arc surface 615, thereby reducing the phenomenon of a gap formed between the abutting surface 121 and the wall portion 613, thereby improving the supporting effect of the abutting surface 121 on the wall portion 613, and thus effectively alleviating the phenomenon of bending or deformation of the wall portion 613 caused by the stamping part 30 during the stamping process of the wall portion 613, which is beneficial to improving the stamping quality of the wall portion 613.

[0244] According to some embodiments of the present application, as shown in conjunction with FIG3 and FIG10 , the first component 10 includes a fixed base 11 and a support base 12. Along a first direction X, the fixed base 11 is disposed opposite the second component 20. The support base 12 is connected to a side of the fixed base 11 facing the second component 20. A portion of the support base 12 is inserted into the accommodating cavity 611, and a side of the support base 12 facing the second component 20 forms an abutment surface 121. A stopper 40 is disposed between the fixed base 11 and the second component 20. A stamping end 31 is formed at one end of the stamping member 30, which is away from the second component 20 in the first direction X, for stamping a groove in a workpiece. Along the first direction X, the sum of a distance D1 from the stamping end 31 to the second component 20, a distance D2 from the abutment surface 121 to the fixed base 11, and the thickness of the wall portion 613 is greater than a height dimension L of the stopper 40.

[0245] The thickness of the wall portion 613 is the distance in the first direction X between the surface of the wall portion 613 abutting against the abutting surface 121 and the surface of the wall portion 613 facing away from the abutting surface 121 .

[0246] In this embodiment, by setting the sum of the distance from the stamping end 31 of the stamping part 30 to the second part 20, the distance from the abutting surface 121 of the support seat 12 to the fixed base 11, and the thickness of the wall portion 613 to be greater than the height dimension of the limiting member 40 arranged between the fixed base 11 and the second part 20, the limiting member 40 limits the distance between the fixed base 11 and the second part 20 while also enabling the stamping end 31 of the stamping part 30 to contact the wall portion 613 and punch a groove on the wall portion 613, which is beneficial to reducing the phenomenon that the stamping part 30 cannot be stamped on the wall portion 613 of the shell 61.

[0247] According to some embodiments of the present application, the wall surface of the accommodating cavity 611 is coated with protective oil. In other words, the inner surface of the housing 61 is coated with protective oil.

[0248] Illustratively, the protective oil may be stretching oil or lubricating oil, or the like.

[0249] In this embodiment, protective oil is provided on the wall surface of the accommodating cavity 611 of the shell 61 to increase the smoothness of the inner surface of the shell 61, thereby reducing the difficulty of inserting the first component 10 into the accommodating cavity 611 from the opening 612 of the shell 61 and reducing the friction coefficient between the first component 10 and the inner surface of the shell 61, which is beneficial to alleviating the risk of the inner surface of the shell 61 being scratched by the first component 10.

[0250] According to some embodiments of the present application, the Brinell hardness of the material of the first component 10 is greater than the Brinell hardness of the material of the workpiece. It should be noted that in embodiments where the first component 10 includes a fixed base 11 and a support base 12, the Brinell hardness of the materials of the fixed base 11 and the support base 12 is greater than the Brinell hardness of the material of the workpiece.

[0251] In this embodiment, by setting the Brinell hardness of the material of the first component 10 to be greater than the Brinell hardness of the workpiece material, the deformation or damage of the first component 10 during the process of stamping the workpiece by the stamping part 30 is alleviated, which is beneficial to improving the processing quality of the workpiece.

[0252] According to some embodiments of the present application, the Brinell hardness of the material of the stamping part 30 is greater than the Brinell hardness of the material of the workpiece. It should be noted that in the embodiment where the stamping part 30 includes a connecting portion 32 and a cutting head 33, the Brinell hardness of the material of the connecting portion 32 and the cutting head 33 is greater than the Brinell hardness of the material of the workpiece.

[0253] In this embodiment, by setting the Brinell hardness of the stamping part 30 material to be greater than the Brinell hardness of the workpiece material, the deformation or damage of the stamping part 30 during the stamping process of the workpiece is alleviated, which is beneficial to improving the processing quality of the workpiece.

[0254] According to some embodiments of the present application, the Brinell hardness of the material of the stopper 40 is greater than the Brinell hardness of the material of the workpiece. It should be noted that in embodiments where the stopper 40 includes a first stopper portion 41 and a second stopper portion 42, the Brinell hardness of the material of the first stopper portion 41 and the second stopper portion 42 is greater than the Brinell hardness of the material of the workpiece.

[0255] In this embodiment, the Brinell hardness of the material of the limit member 40 is set to be greater than the Brinell hardness of the workpiece material, so as to alleviate the deformation or damage of the limit member 40 during the process of stamping the workpiece by the stamping part 30, thereby improving the effect of the limit member 40 in limiting the minimum distance between the stamping part 30 and the abutment surface 121, thereby improving the processing quality of the workpiece.

[0256] In some embodiments, the material of the first component 10 includes steel, the material of the stamping component 30 includes steel, the material of the limiting component 40 includes steel, and the material of the workpiece includes aluminum.

[0257] In this embodiment, by setting the material of the first component 10, the stamping part 30 and the limit part 40 to steel, and setting the material of the workpiece to aluminum, the Brinell hardness of the material of the first component 10, the stamping part 30 and the limit part 40 is greater than the Brinell hardness of the material of the workpiece, and the material cost is reduced, which is beneficial to reducing the manufacturing cost of the stamping equipment 100.

[0258] According to some embodiments of the present application, referring to Figures 1 to 3 and Figures 6 to 7, the present application provides a stamping device 100, which includes a first component 10, a second component 20, a stamping part 30, a limiter 40, and a clamping mechanism 50. The first component 10 has an abutment surface 121, which is used to support a workpiece along a first direction X. The second component 20 is arranged opposite to the abutment surface 121 along the first direction X, and the second component 20 is located above the first component 10 in the first direction X. The second component 20 can approach or move away from the abutment surface 121 along the first direction X. The stamping part 30 is detachably connected to the side of the second component 20 facing the abutment surface 121. The stamping part 30 includes a connecting portion 32 and a cutting head 33. The connecting portion 32 and the cutting head 33 are integrally formed. The connecting portion 32 is connected to the side of the second component 20 facing the abutment surface 121. The cutting head 33 is protruding from the surface of the connecting portion 32 facing away from the second component 20 in the first direction X. The end of the cutting head 33 away from the connecting portion 32 in the first direction X forms a stamping end 31. The stamping end 31 is used to stamp a groove on the workpiece. A limiter 40 is provided between the first component 10 and the second component 20. The limiter 40 is configured to limit the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X. The first component 10 includes a fixed base 11 and a support base 12. The fixed base 11 is arranged opposite to the second component 20 along the first direction X. The support base 12 is connected to the side of the fixed base 11 facing the second component 20 along the first direction X, and the side of the support base 12 facing the second component 20 forms an abutment surface 121. Along the first direction X, the limiter 40 is arranged between the fixed base 11 and the second component 20. The sum of the distance D1 from the stamping end 31 to the second component 20 and the distance D2 from the abutment surface 121 to the fixed base 11 is less than the height dimension L of the limiter 40. The limiting member 40 includes a first limiting portion 41 and a second limiting portion 42 that are arranged opposite each other along the first direction X. One end of the first limiting portion 41 is connected to a surface of the fixed base 11 of the first component 10 on a side facing the second component 20 in the first direction X. One end of the second limiting portion 42 is connected to a surface of the second component 20 on a side facing the fixed base 11 of the first component 10 in the first direction X. The other end of the second limiting portion 42 and the other end of the first limiting portion 41 are configured to abut against each other when the second component 20 approaches the abutment surface 121 in the first direction X, thereby limiting the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X. Along the first direction X, the length L1 of the first limiting portion 41 is equal to the length L2 of the second limiting portion 42, and the area of ​​the minimum cross-section of the first limiting portion 41 perpendicular to the first direction X is equal to the area of ​​the minimum cross-section of the second limiting portion 42 perpendicular to the first direction X. There are multiple limiting members 40, and the multiple limiting members 40 are arranged around the support base 12.The pressing mechanism 50 includes a pressing seat 51 and an elastic member 52. The pressing seat 51 is located on the side of the second component 20 facing the abutment surface 121 and is connected to the side of the second component 20 facing the abutment surface 121 in the first direction X through the elastic member 52. The elastic member 52 is configured to be compressed along the first direction X when the pressing seat 51 abuts the workpiece. The pressing seat 51 is used to press the workpiece against the abutment surface 121 when the second component 20 approaches the abutment surface 121 along the first direction X. When the pressing seat 51 is not in contact with the workpiece, the side of the pressing seat 51 that abuts the workpiece is closer to the abutment surface 121 than the punching end 31 along the first direction X. The pressing seat 51 is provided with a through hole 511 for the punching part 30 to pass through. The through hole 511 penetrates the pressing seat 51 along the first direction X, and the projection of the punching part 30 in the first direction X is located within the through hole 511. There are multiple elastic members 52 , and the multiple elastic members 52 are arranged around the stamping member 30 .

[0259] According to some embodiments of the present application, referring to Figures 8 to 13, the present application provides a production system 1000, which includes a workpiece and a stamping device 100 according to any of the above schemes. The workpiece is a shell 61 of the outer shell 60 of the battery cell 200. The interior of the shell 61 forms a receiving cavity 611 having an opening 612. The shell 61 includes a side wall 614 and a wall portion 613. The side wall 614 is arranged around the wall portion 613. Along the first direction X, one end of the side wall 614 is connected to the wall portion 613, and the other end of the side wall 614 encloses the opening 612. The side wall 614 and the wall portion 613 jointly define a receiving cavity 611 for receiving the electrode assembly 70. The cavity wall surface of the receiving cavity 611 is coated with protective oil. Along the first direction X, a portion of the first component 10 is inserted into the accommodating cavity 611 through the opening 612 to position the housing 61, and the abutment surface 121 is used to support the wall portion 613 of the housing 61. The stamping member 30 is used to stamp a groove on the side of the wall portion 613 facing away from the abutment surface 121. The first component 10 includes a fixed base 11 and a support base 12. Along the first direction X, the fixed base 11 is arranged opposite to the second component 20, and the fixed base 11 is located below the second component 20 in the first direction X. The support base 12 is connected to the side of the fixed base 11 facing the second component 20. The support base 12 is inserted into the accommodating cavity 611, and the side of the support base 12 facing the second component 20 forms the abutment surface 121. The limiting member 40 is arranged between the fixed base 11 and the second component 20. The side wall 614 surrounds the outside of the support base 12, and a gap is set between the side wall 614 and the support base 12. The surface of the wall portion 613 facing the accommodating cavity 611 is connected to the surface of the side wall 614 facing the accommodating cavity 611 by an arcuate surface 615. Along the first direction X, the projection of the arcuate surface 615 is located within the gap between the side wall 614 and the support seat 12. The stamping member 30 has a stamping end 31 formed at one end thereof, which is distal from the second component 20 in the first direction X, for stamping a groove in the workpiece. Along the first direction X, the sum of a distance D1 between the stamping end 31 and the second component 20, a distance D2 between the abutting surface 121 and the fixed base 11, and the thickness of the wall portion 613 is greater than the height dimension L of the stopper 40. Among them, the Brinell hardness of the material of the first component 10 is greater than the Brinell hardness of the material of the workpiece, the Brinell hardness of the material of the stamping part 30 is greater than the Brinell hardness of the material of the workpiece, and the Brinell hardness of the material of the limit part 40 is greater than the Brinell hardness of the material of the workpiece. The material of the first component 10 includes steel, the material of the stamping part 30 includes steel, the material of the limit part 40 includes steel, and the material of the workpiece includes aluminum.

[0260] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0261] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A stamping device comprising: A first component having an abutting surface, wherein the abutting surface is used to abut against the workpiece along a first direction; a second component disposed opposite to the abutting surface along the first direction, wherein the second component and the first component can move closer to or farther away from each other in the first direction; a stamping part connected to a side of the second component facing the abutting surface, the stamping part being used for stamping a groove on the workpiece; as well as A limiting member is provided between the first component and the second component, and the limiting member is configured to limit a minimum distance between the stamping component and the abutting surface in the first direction.

2. The stamping equipment according to claim 1, wherein The limiting member includes a first limiting portion and a second limiting portion arranged opposite to each other along a first direction. Along the first direction, one end of the first limiting portion is connected to the first component, and one end of the second limiting portion is connected to the second component. The other end of the second limiting portion and the other end of the first limiting portion are configured to abut against each other when the first component and the second component approach each other, so as to limit the minimum distance between the stamping part and the abutting surface in the first direction.

3. The stamping equipment according to claim 2, wherein: The difference between the minimum stiffness of the first limiting portion and the minimum stiffness of the second limiting portion is less than or equal to 2×10 10 N / m.

4. The punching device according to claim 2 or 3, wherein: The minimum stiffness of the first limiting portion is greater than or equal to 6.25×10 10 N / m; and / or The minimum stiffness of the second limiting portion is greater than or equal to 6.25×10 10 N / m.

5. The punching device according to any one of claims 2 to 4, wherein: Along the first direction, a difference between a length of the first limiting portion and a length of the second limiting portion is less than or equal to 10 cm.

6. The stamping apparatus according to claim 5, wherein: Along the first direction, the length of the first limiting portion is equal to the length of the second limiting portion.

7. The punching device according to any one of claims 2 to 6, wherein: The area of ​​the minimum cross section of the first limiting portion perpendicular to the first direction is equal to the area of ​​the minimum cross section of the second limiting portion perpendicular to the first direction.

8. The stamping apparatus according to claim 1, wherein: Along the first direction, the limiting member has a first end and a second end relative to each other, the first end is connected to the first component, and the second end is configured to abut against the second component when the first component and the second component approach each other, so as to limit the minimum distance between the stamping part and the abutment surface in the first direction.

9. The stamping apparatus according to claim 1, wherein: Along the first direction, the limiting member has a first end and a second end relative to each other, the second end is connected to the second component, and the first end is configured to abut against the first component when the first component and the second component approach each other, so as to limit the minimum distance between the stamping part and the abutment surface in the first direction.

10. The punching device according to any one of claims 1 to 9, wherein: The abutting surface is used to support the workpiece along the first direction, and the second component can move relative to the first component along the first direction to drive the stamping part to stamp a groove on the workpiece.

11. The stamping apparatus according to claim 10, wherein: The first component includes: a fixed base, arranged opposite to the second component along the first direction; a support seat connected to a side of the fixing base facing the second component along the first direction, wherein the side of the support seat facing the second component forms the abutting surface; Wherein, along the first direction, the limiting member is arranged between the fixed base and the second component.

12. The stamping apparatus according to claim 11, wherein One end of the stamping part away from the second part in the first direction forms a stamping end for stamping a groove on the workpiece. Along the first direction, the sum of the distance from the stamping end to the second part and the distance from the abutment surface to the fixed base is less than the height dimension of the limit member.

13. The punching apparatus according to claim 11 or 12, wherein: There are multiple limiting members, and the multiple limiting members are arranged around the support seat.

14. The punching apparatus according to any one of claims 1 to 13, wherein: The stamping equipment also includes: A pressing mechanism is connected to the second component, and is used to press the workpiece against the abutting surface when the first component and the second component are close to each other.

15. The stamping apparatus according to claim 14, wherein The pressing mechanism comprises: a pressing seat, located along the first direction on a side of the second component facing the abutting surface, the pressing seat being used to press the workpiece against the abutting surface; An elastic member is connected between the pressing seat and the second component along the first direction, and the elastic member is configured to be compressed along the first direction when the pressing seat abuts against the workpiece.

16. The stamping apparatus according to claim 15, wherein: An end of the stamping member away from the second member in the first direction forms a stamping end for stamping a groove on the workpiece; Wherein, when the pressing seat is not in contact with the workpiece, along the first direction, the side of the pressing seat for abutting against the workpiece is closer to the abutting surface than the punching end.

17. The punching apparatus according to claim 15 or 16, wherein: The pressing seat is provided with a through hole for the stamping part to pass through, and the through hole penetrates the pressing seat along the first direction; Wherein, along the first direction, at least a portion of the projection of the stamping part is located within the through hole.

18. The stamping apparatus according to claim 17, wherein: There are multiple elastic members, and the multiple elastic members are arranged around the stamping member.

19. The punching apparatus according to any one of claims 1 to 18, wherein: The stamping part includes: a connecting portion connected to a side of the second component facing the abutting surface; A tool head is protruding from a surface of the connecting portion in the first direction away from the second component. An end of the tool head in the first direction away from the connecting portion forms a stamping end for stamping a groove on the workpiece.

20. The punching apparatus according to any one of claims 1 to 19, wherein: The stamping part is detachably connected to the second component.

21. A production system comprising: The stamping device according to any one of claims 1 to 20; as well as A workpiece is configured to abut against the abutting surface along the first direction.

22. The production system according to claim 21, wherein: The workpiece is a shell of a battery cell, an accommodating cavity with an opening is formed inside the shell, and the shell includes a wall portion; Part of the first component is inserted into the accommodating cavity from the opening to position the shell, and the abutment surface is used to abut against the wall portion along the first direction, and the stamping part is used to stamp a groove on the side of the wall portion away from the abutment surface.

23. The production system according to claim 22, wherein: The housing includes a side wall and the wall portion, wherein the side wall is disposed around the wall portion. Along the first direction, one end of the side wall is connected to the wall portion, and the other end of the side wall is enclosed to form an opening. The side wall and the wall portion together define an accommodating cavity. Part of the first component is inserted into the accommodating cavity from the opening along the first direction to position the housing, and the abutting surface is used to abut against the wall portion along the first direction.

24. The production system according to claim 23, wherein: The abutting surface is used to support the wall portion along the first direction. The second component can move relative to the first component along the first direction to drive the stamping part to stamp a groove on a side of the wall portion away from the abutting surface.

25. The production system according to claim 24, wherein: The first component includes a fixed base and a support base. Along the first direction, the fixed base and the second component are arranged opposite to each other. The support base is connected to a side of the fixed base facing the second component. The support base is inserted into the accommodating cavity, and the side of the support base facing the second component forms the abutment surface. The limiting member is arranged between the fixed base and the second component. The side wall surrounds the outer side of the support base, and a gap is set between the side wall and the support base.

26. The production system according to claim 25, wherein: The surface of the wall portion facing the accommodating cavity and the surface of the side wall facing the accommodating cavity are connected through an arc surface; Wherein, along the first direction, the projection of the arc surface is located in the gap between the side wall and the support seat.

27. The production system according to any one of claims 24 to 26, wherein: The first component includes a fixed base and a support base. Along the first direction, the fixed base and the second component are arranged opposite to each other. The support base is connected to a side of the fixed base facing the second component. A portion of the support base is inserted into the accommodating cavity, and the side of the support base facing the second component forms the abutment surface. The limiting member is arranged between the fixed base and the second component. In which, the end of the stamping part away from the second part in the first direction forms a stamping end for stamping a groove on the workpiece, and along the first direction, the sum of the distance from the stamping end to the second part, the distance from the abutting surface to the fixed base and the thickness of the wall portion is greater than the height dimension of the limit member.

28. The production system according to any one of claims 22 to 27, wherein: The cavity wall surface of the accommodating cavity is coated with protective oil.

29. The production system according to any one of claims 21 to 28, wherein: The Brinell hardness of the material of the first component is greater than the Brinell hardness of the material of the workpiece; and / or The Brinell hardness of the material of the stamping part is greater than the Brinell hardness of the material of the workpiece; and / or The Brinell hardness of the material of the limiting member is greater than the Brinell hardness of the material of the workpiece.

30. The production system according to claim 29, wherein: The material of the first component includes steel, the material of the stamping part includes steel, the material of the limiting part includes steel, and the material of the workpiece includes aluminum.

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