Stamping equipment and production system

Abstract

The utility model provides stamping equipment and a production system, and belongs to the technical field of batteries. The stamping equipment comprises a first part, a second part, a stamping part and a limiting part. The first component is provided with an abutting face, and the abutting face is used for abutting against the workpiece in the first direction. 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. 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

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 developed by leaps and bounds. In the field of electric vehicles, 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. Among them, batteries, as core components of new energy vehicles, have high requirements in terms of reliability and service life.

[0003] In battery technology, in order to ensure the safety of battery cells, a notch is generally punched out on the outer shell of the battery cell to form a pressure relief structure for releasing the internal pressure of the battery cell, so that when the internal pressure or temperature of the battery cell reaches a threshold, the pressure relief structure can be actuated to release the internal pressure of the battery cell. However, the precision of the notch punched out on the outer shell of the existing battery cell is low, so that the residual thickness of the notch is not uniform, resulting in poor consistency of the notch of the battery cell, which is not conducive to improving production quality. Utility Model Content

[0004] The embodiments of the present application provide a stamping device and a production system, which can effectively improve the manufacturing quality of workpieces.

[0005] 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 a 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 a 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.

[0006] In the above technical scheme, the first component has an abutment surface for abutting against the workpiece along a first direction, the second component and the abutment surface are arranged opposite to each other in the first direction, and a stamping part is arranged on the side of the second component facing the abutment 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 on the abutment 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 abutment surface when the stamping part approaches the abutment 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 control 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.

[0007] In some embodiments, the limiting member includes a first limiting portion and a second limiting portion arranged relatively to each other along a first direction, wherein 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 are close to each other, so as to limit the minimum distance between the stamping part and the abutting surface in the first direction.

[0008] In the above technical scheme, the limit member is provided with a first limit portion and a second limit portion which are arranged relatively along the first direction, and one end of the first limit portion and one end of the second limit 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 limit portion and the other end of the second limit 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 limit collision between the second component and the first component occurs between the first limit portion and the second limit portion of the limit member, thereby effectively alleviating the phenomenon of direct collision between the limit member and the first component, so as to reduce the phenomenon of damage to the second component or the first component, which is beneficial to improving the service life and reliability of the stamping equipment.

[0009] 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.

[0010] 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 limit part and the second limit part are relatively close. In this way, when the first limit part and the second limit part abut against each other, the one with larger stiffness of the first limit part and the second limit part is not easy to cause a large deformation of the one with smaller stiffness of the first limit part and the second limit 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 on the workpiece is more accurate, which is beneficial to improving the processing quality of the workpiece.

[0011] 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 limit portion is greater than or equal to 6.25×10 10 N / m.

[0012] In the above technical solution, by setting the minimum stiffness of the first limit 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 and deformation of the first limit part when it abuts against the second limit part, which is conducive to improving the minimum distance limiting effect between the stamping part and the abutting surface, so that the residual thickness of the groove punched on the workpiece is 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 limit portion has sufficient rigidity, reducing the risk of bending and deformation of the second limit portion when it abuts against the first limit portion, which is beneficial to improving the minimum distance limiting effect between the stamping part and the abutment 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.

[0013] 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.

[0014] In the above technical solution, by setting the difference in length between the first limit portion and the second limit portion in the first direction to be less than or equal to 10 cm, the lengths of the first limit portion and the second limit portion in the first direction are close. Therefore, on the one hand, the contact collision point between the first limit portion and the second limit 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 limit portion and the second limit portion can be close, so that the first limit portion and the second limit portion abut against each other to limit the minimum distance between the stamping part and the abutting surface in the first direction.

[0015] In some embodiments, along the first direction, the length of the first limiting portion is equal to the length of the second limiting portion.

[0016] In the above technical solution, by setting the lengths of the first limit portion and the second limit portion in the first direction to be equal, the stiffness and structural strength of the first limit portion and the second limit portion can be further made close, so that the first limit portion and the second limit portion abut against each other to limit the minimum distance between the stamping part and the abutting surface in the first direction.

[0017] 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.

[0018] 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 can be close, thereby facilitating the first limiting portion and the second limiting portion to abut against each other to limit the minimum distance between the stamping part and the abutting surface in the first direction.

[0019] 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.

[0020] In the above technical solution, by connecting the first end of the limit member to the first component, the second component can abut against the second end of the limit member when the first component and the second component approach each other along the first direction, so as to limit 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.

[0021] 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.

[0022] In the above technical solution, by connecting the second end of the limit member to the second component, the second component can achieve the limit member 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 limit member 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.

[0023] In some embodiments, 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.

[0024] 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 stamping part is driven by the second component to approach the abutment surface along the first direction and stamp the workpiece. This structure makes it easy 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.

[0025] 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.

[0026] 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. 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 limit member 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 difficulty of assembling the limit member.

[0027] In some embodiments, one 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 and the distance from the abutment surface to the fixed base is less than the height dimension of the limit member.

[0028] 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.

[0029] In some embodiments, there are multiple limiting members, and the multiple limiting members are arranged around the supporting seat.

[0030] In the above technical scheme, 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, the effect of limiting the second component and the fixed base can be further improved, 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, the balance and stability of the force exerted by the limit members on the second component and the fixed base can be improved, so as to alleviate the phenomenon that the fixed base and the second component are tilted due to local force, which is beneficial to improving the stability and reliability of the stamping workpiece of the stamping part.

[0031] 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.

[0032] In the above technical scheme, 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.

[0033] In some embodiments, the pressing mechanism includes a pressing seat and an elastic member; the pressing seat is located along the first direction on the side of the second component facing the abutment surface, and the pressing seat is used to press the workpiece against 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.

[0034] In the above technical scheme, the clamping mechanism is provided with a clamping seat and an elastic member, the clamping seat is used to abut against the workpiece placed on the abutting surface to press the workpiece against the abutting surface, and the clamping seat is a structure connected to the second component through the elastic member, so that when the second component drives the clamping 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 clamping seat, so that the clamping seat presses the workpiece against the abutting surface. The clamping 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 clamping seat and the workpiece, which is beneficial to reducing the risk of the clamping seat damaging the workpiece; on the other hand, the elastic member can provide elastic force for the clamping seat, so that the clamping seat can press the workpiece against the abutting surface more firmly, which is beneficial to improving the stability and reliability of the clamping seat pressing the workpiece.

[0035] In some embodiments, 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; wherein, when the clamping seat is not in contact with the workpiece, along the first direction, the side of the clamping seat used to abut against the workpiece is closer to the abutment surface than the stamping end.

[0036] In the above technical solution, by setting the side of the clamping seat that abuts against the workpiece to be closer to the abutment surface of the support seat than the stamping end of the stamping part when the clamping seat is not in contact with the workpiece, when the abutment surface of the first component and the second component approach each other along the first direction, the clamping seat of the clamping mechanism will contact the workpiece preferentially compared to the stamping part, so that the clamping seat of the clamping 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.

[0037] 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.

[0038] In the above technical solution, the pressing part is provided with a through hole in the first direction for the punching part to pass through, so that the punching part can punch the workpiece pressed by the pressing seat after passing through the through hole. The punching equipment with such a structure is convenient for the punching part to punch the workpiece, and the pressing seat is a structure arranged around the punching part, so that the pressing seat can press the entire area of ​​the workpiece around the punching part on the abutment surface, which is conducive to further improving the effect of the pressing seat pressing the workpiece. In addition, by setting at least part of the projection of the punching part in the first direction to be located in the through hole, the scratching phenomenon between the punching part and the pressing seat when passing through the through hole of the pressing seat is reduced.

[0039] In some embodiments, there are a plurality of elastic members, and the plurality of elastic members are arranged around the stamping member.

[0040] 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 realized as a structure interconnected with 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 realized to alleviate the phenomenon that the clamping seat is locally subjected to the elastic force of the elastic parts, thereby facilitating further improving the effect of the clamping seat in clamping the workpiece on the abutting surface.

[0041] In some embodiments, the stamping part includes a connecting portion and a cutter head; the connecting portion is connected to the side of the second component facing the abutment surface; the cutter 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 cutter 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.

[0042] 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 workpiece.

[0043] In some embodiments, the stamping is detachably connected to the second component.

[0044] 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 application scope 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.

[0045] 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 used to abut against the abutment surface along the first direction.

[0046] In some embodiments, the workpiece is a shell of a battery cell, the interior of the shell forms a accommodating cavity with an opening, and the shell includes a wall portion; wherein a portion 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.

[0047] In the above technical scheme, 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 positioning the shell through the first component to realize the stamping processing of the stamped parts on the wall of the shell. The production system adopting this structure can improve the stability and reliability of the stamping equipment for 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 stamped parts on the wall of the shell.

[0048] In some embodiments, the shell includes a side wall and the wall portion, the side wall is arranged around the wall portion, 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 abutment surface is used to abut against the wall portion along the first direction.

[0049] 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 as to facilitate the insertion of part of the first component into the accommodating cavity from the opening along the first direction and then abut against the wall portion. A production system adopting such a structure can reduce the difficulty of abutting against each other between the wall portion of the shell and the abutting surface of the first component, and facilitate stamping of stamping parts, which is beneficial to reducing the difficulty of processing stamping grooves on the shell to improve production efficiency.

[0050] 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.

[0051] 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 easy for the stamping part to stamp a groove on the wall portion of the shell, which is beneficial to improving the stamping quality of the wall portion, and it is convenient to put the shell on the first component for stamping processing and remove it from the first component, which is beneficial to reducing the processing difficulty of the shell and improving the processing efficiency of the shell.

[0052] In some embodiments, the first component includes a fixed base and a support base, and along the first direction, the fixed base and the second component are arranged opposite to each other, 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 arranged between the side wall and the support base.

[0053] 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 outer side 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, which is beneficial to reduce the difficulty of inserting the support seat into or withdrawing the accommodating cavity of the shell, and can reduce the scratching phenomenon between the side wall of the shell and the support seat.

[0054] 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.

[0055] 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 to reduce the interference between the abutting surface and the arc surface, thereby reducing the phenomenon of a 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 parts during the stamping process of the wall, which is beneficial to improving the stamping quality of the wall.

[0056] In some embodiments, the first component includes a fixed base and a support seat, and 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, a 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.

[0057] In the above technical solution, by setting the sum of the distance from the stamping end of the stamping part to the second component, 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 member arranged between the fixed base and the second component, the limiting member can limit the distance between the fixed base and the second component while the stamping end of the stamping part can contact the wall portion and punch a groove on the wall portion, which is beneficial to reduce the phenomenon that the stamping part cannot be stamped on the wall portion of the shell.

[0058] In some embodiments, the wall surface of the accommodating cavity is coated with protective oil.

[0059] 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 beneficial to alleviating the risk of the inner surface of the shell being scratched by the first component.

[0060] 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 member is greater than the Brinell hardness of the material of the workpiece.

[0061] 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 stamping the workpiece by the stamping part is alleviated, which is beneficial 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 stamping the workpiece is alleviated, which is beneficial 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 stamping the workpiece by the stamping part 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.

[0062] In some embodiments, the material of the first component includes steel, the material of the stamping part includes steel, the material of the limiter includes steel, and the material of the workpiece includes aluminum.

[0063] 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

[0064] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. 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 related drawings can be obtained based on these drawings without paying creative work.

[0065] Figure 1 A schematic diagram of the structure of a stamping device provided in some embodiments of the present application;

[0066] Figure 2 A front view of a stamping device provided for some embodiments of the present application;

[0067] Figure 3 A cross-sectional view of a stamping device provided for some embodiments of the present application;

[0068] Figure 4 A schematic diagram of the structure of a stamping device provided in some other embodiments of the present application;

[0069] Figure 5 A schematic diagram of the structure of a stamping device provided in some further embodiments of the present application;

[0070] Figure 6 A schematic diagram of the structure of a stamping part of a stamping device provided in some embodiments of the present application;

[0071] Figure 7 A schematic diagram of the structure of a stamping part of a stamping device provided in some embodiments of the present application in other embodiments;

[0072] Figure 8 A schematic diagram of the structure of a production system provided in some embodiments of the present application;

[0073] Fig. 9 A front view of a production system provided for some embodiments of the present application;

[0074] Fig.10 A cross-sectional view of a production system provided for some embodiments of the present application;

[0075] Fig.11 An exploded view of the structure of a battery cell provided in some embodiments of the present application;

[0076] Fig.12 A schematic structural diagram of a shell of a battery cell housing provided in some embodiments of the present application;

[0077] Fig.13 for Fig.10 A partial enlarged view of point A of the production system shown.

[0078] 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-casing; 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

[0079] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0080] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. 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 and secondary relationship.

[0081] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0082] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0083] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0084] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0085] The term "plurality" used in the present application refers to two or more (including two).

[0086] 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.

[0087] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0088] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed between the positive electrode and the negative electrode. The separator is set between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0089] In some embodiments, the positive electrode may be a positive electrode sheet, and the positive electrode sheet 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.

[0090] 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 disposed on either or both of the two facing surfaces of the positive electrode current collector.

[0091] 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 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.).

[0092] 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. Among them, 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.

[0093] In some embodiments, the positive electrode may be a foamed metal. The foamed metal may be a nickel foam, a copper foam, an aluminum foam, an alloy foam, etc. When the foamed metal is used as the positive electrode, the positive electrode active material may not be provided on the surface of the foamed metal, but of course, the positive electrode active material may also be provided. As an example, a lithium source material, potassium metal or sodium metal may also be filled or / and deposited in the foamed metal, and the lithium source material is lithium metal and / or a lithium-rich material.

[0094] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0095] As an example, the negative electrode current collector may be a metal foil, a foamed metal 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 foamed metal may be a foamed nickel, a foamed copper, a foamed aluminum, a foamed alloy, etc. The composite current collector may include a polymer material base 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.).

[0096] 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.

[0097] 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 disposed on either or both of the two facing surfaces of the negative electrode current collector.

[0098] As an example, the negative electrode active material may adopt the negative electrode active material for battery cells 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.

[0099] 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.

[0100] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0101] In some embodiments, the separator is a separator membrane. There may be many types of separator membranes, and any known porous separator membrane with good chemical stability and mechanical stability may be selected.

[0102] As an example, the material of the separator may include at least one of glass fiber, non-woven fabric, polyethylene, polypropylene and polyvinylidene fluoride. The separator may be a single-layer film or a multi-layer composite film. When the separator is a multi-layer composite film, the materials of each layer may be the same or different. The separator may be a separate component located between the positive and negative electrodes, or may be attached to the surface of the positive and negative electrodes.

[0103] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transmit ions and isolate the positive and negative electrodes.

[0104] In some embodiments, the battery cell further includes an electrolyte, which plays a role in conducting ions between the positive and negative electrodes. The electrolyte can be liquid, gel or solid. Among them, the liquid electrolyte includes an electrolyte salt and a solvent.

[0105] 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 dioxalatoborate, lithium difluorodioxalatophosphate, and lithium tetrafluorooxalatophosphate.

[0106] In some embodiments, the solvent may include at least one of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl 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.

[0107] Among them, the gel electrolyte includes a skeleton network with a polymer as the electrolyte, combined with an ionic liquid-lithium salt.

[0108] Among them, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0109] 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, and the like.

[0110] 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.

[0111] As an example, the composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to a polymer solid electrolyte.

[0112] 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.

[0113] In some embodiments, the electrode assembly is a laminate structure.

[0114] As an example, a plurality of positive electrode sheets and a plurality of negative electrode sheets may be provided respectively, and the plurality of positive electrode sheets and the plurality of negative electrode sheets may be alternately stacked.

[0115] 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.

[0116] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of folded sections that are stacked.

[0117] As an example, a plurality of separators may be provided, each of which is provided between any adjacent positive electrode sheets or negative electrode sheets.

[0118] As an example, the separator may be disposed continuously, and may be disposed between any adjacent positive electrode sheets or negative electrode sheets by folding or winding.

[0119] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or polygonal.

[0120] In some embodiments, the electrode assembly is provided with tabs, which can lead current out of the electrode assembly. The tabs include a positive tab and a negative tab.

[0121] In some embodiments, the 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 (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film.

[0122] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes but is not limited to a square-shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc.

[0123] For general battery cells, in order to ensure the safety of battery cells, a pressure relief structure is usually set on the battery cell to release the internal pressure of the battery cell through the pressure relief structure, thereby effectively improving the safety of battery cells. In the related art, 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 integrally formed on the outer shell, which will affect the consistency of the notch of the battery cell, which is not conducive to improving the production quality of the battery cell, and will affect the pressure relief performance of the battery cell.

[0124] 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 a 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.

[0125] In a stamping device of this structure, the first component has an abutment surface for abutting against the workpiece along a first direction, the second component and the abutment surface are arranged opposite to each other in the first direction, and a stamping part is arranged on the side of the second component facing the abutment 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 on the abutment 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 abutment surface when the stamping part approaches the abutment 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 control 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.

[0126] An embodiment of the present application provides a stamping device, which 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 in conjunction with the accompanying drawings.

[0127] According to some embodiments of this application, please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a stamping device 100 provided in some embodiments of the present application. Figure 2 A front view of a stamping device 100 provided in some embodiments of the present application, Figure 3 A cross-sectional view of a stamping device 100 provided for 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 stopper 40. The first component 10 has a contact surface 121, and the contact surface 121 is used to contact with a workpiece along a first direction X. The second component 20 is arranged opposite to the contact 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 contact surface 121, and the stamping part 30 is used to stamp a groove on the workpiece. The stopper 40 is arranged between the first component 10 and the second component 20, and the stopper 40 is configured to limit the minimum distance between the stamping part 30 and the contact surface 121 in the first direction X.

[0128] Among them, the first component 10 has a contact surface 121, and the contact surface 121 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, and the 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, the surface is the contact surface 121 of the first component 10.

[0129] For example, in Figure 3 In the embodiment, the first direction X is the direction of gravity, and 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.

[0130] Optionally, the structure of the first component 10 can be various, for example, Figure 2 and Figure 3In the embodiment, 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 to each other along the first direction X, the support base 12 is connected to the surface of the fixed base 11 facing the second component 20, and the surface of the support base 12 facing the second component 20 forms an abutment surface 121 for supporting the workpiece, and correspondingly, the limiter 40 is arranged between the fixed base 11 and the movable in the first direction X. Of course, in other embodiments, the first component 10 may also only include the fixed base 11, the fixed base 11 and the second component 20 are arranged opposite to each other along the first direction X, the surface of the fixed base 11 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 in the first direction X.

[0131] 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. Figure 3 In the figure, 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 can be various, such as welding, abutment, bonding or clamping, etc. Similarly, the support seat 12 and the fixed base 11 can also be an integrated structure formed by an integrated 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 abutment 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 abutment 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.

[0132] 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.

[0133] For example, in Figure 2 and Figure 3In the embodiment, 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 abutting surface 121 to 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 abutting surface 121 to abut the workpiece and squeeze the workpiece on the stamping part 30, so as to realize the stamping process of the workpiece by the stamping part 30. Of course, the first component 10 and the second component 20 can both move along the first direction X, so that when the first component 10 and the second component 20 move in a direction close to each other, they can drive the stamping part 30 to approach the abutting surface 121 to stamp the workpiece.

[0134] 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 approach the abutment surface 121, so that the stamping part 30 can stamp a groove on the workpiece.

[0135] 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. Figure 3 In the embodiment, 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 connection structure between the stamping part 30 and the second component 20 can 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 setting 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.

[0136] The limit 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 limit member 40 can provide the first component 10 and the second component 20 with abutment in the first direction X, respectively, so that when the first component 10 and the second component 20 are both abutting against the limit 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.

[0137] 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 parts that are separately arranged, 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.

[0138] 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 arranged 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, so as to control the residual thickness of the stamping part 30 after punching the groove on the workpiece, so as to control the residual thickness of the groove after the workpiece is stamped, and then the consistency of the thickness of the bottom wall of the groove processed on the workpiece can be improved, so as to improve the processing quality of the stamping equipment 100.

[0139] According to some embodiments of the present application, see Figure 2 and Figure 3 As shown, the limiting member 40 includes a first limiting portion 41 and a second limiting portion 42 which are arranged relatively to each other along the first direction X. 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. 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.

[0140] Among them, the limiting member 40 includes a first limiting portion 41 and a second limiting portion 42 which are relatively arranged along the first direction X, that is, the limiting member 40 includes two parts which are separately arranged, 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.

[0141] 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 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, the minimum distance between the stamping part 30 and the abutment surface 121 in the first direction X is limited.

[0142] Exemplarily, 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.

[0143] 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, etc. Of course, the second limiting portion 42 may be connected to the second component 20 by various structures, such as welding, clamping, or bolting, etc.

[0144] Exemplarily, 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 abut against each other and are easy to process. Of course, in other embodiments, the first limiting portion 41 and the second limiting portion 42 may also be rectangular parallelepiped, triangular prism, pentagonal prism or other polygonal prism with their axes extending along the first direction X.

[0145] In this embodiment, the limiting member 40 is provided with a first limiting portion 41 and a second limiting portion 42 which are relatively arranged 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, which is beneficial to improving the service life and reliability of the stamping equipment 100.

[0146] 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 limit portion 41 minus the minimum stiffness of the second limit portion 42 is less than 2×10 10 N / m.

[0147] 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 easy 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 on the workpiece is more accurate, which is beneficial to improving the processing quality of the workpiece.

[0148] In some embodiments, the minimum rigidity of the first limiting portion 41 is greater than or equal to 6.25×10 10 N / m.

[0149] 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.

[0150] 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 limit portion 41 has sufficient rigidity, reducing the risk of bending and deformation of the first limit portion 41 when abutting against the second limit 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.

[0151] In some embodiments, the minimum stiffness of the second limiting portion 42 is greater than or equal to 6.25×10 10 N / m.

[0152] 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.

[0153] 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 limit portion 42 has sufficient rigidity, reducing the risk of bending and deformation of the second limit portion 42 when abutting against the first limit portion 41, which is beneficial to improving the minimum distance limiting effect between the stamping part 30 and the abutment 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.

[0154] According to some embodiments of the present application, see Figure 2 and Figure 3 As shown, 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 the value of L1 minus L2 is less than or equal to 10 cm, that is, the difference between the distance from one end of the first limiting portion 41 for contacting with the second limiting portion 42 in the first direction X to the fixed base 11 and the distance from one end of the second limiting portion 42 for contacting with the first limiting portion 41 in the first direction X to the second component 20 is within 10 cm.

[0155] 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.

[0156] In this embodiment, by setting the difference in length between the first limit portion 41 and the second limit portion 42 in the first direction X to be less than or equal to 10 cm, the lengths of the first limit portion 41 and the second limit portion 42 in the first direction X are close to each other, so that on the one hand, the contact and collision point between the first limit portion 41 and the second limit portion 42 can be 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 limit portion 41 and the second limit portion 42 can be close to each other, so that the first limit portion 41 and the second limit 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.

[0157] In some embodiments, see Figure 2 and Figure 3 As shown, 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 .

[0158] In this embodiment, by setting the lengths of the first limit portion 41 and the second limit portion 42 in the first direction X to be equal, the stiffness and structural strength of the first limit portion 41 and the second limit portion 42 can be further made close, so that the first limit portion 41 and the second limit 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.

[0159] According to some embodiments of the present application, see Figure 1 and Figure 2 As shown, 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.

[0160] For example, in Figure 1In the embodiment, 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.

[0161] Exemplarily, the first limiting portion 41 and the second limiting portion 42 are both cylindrical structures extending along the first direction, and 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.

[0162] In this embodiment, by setting the minimum cross-sectional areas 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 close, thereby facilitating the first limiting portion and the second limiting portion to abut against each other to limit the minimum distance between the stamping part and the abutting surface in the first direction.

[0163] According to some embodiments of the present application, referring to Figure 4 , Figure 4 A schematic diagram of the structure of a stamping device 100 provided in some other embodiments of the present application. Along the first direction X, the stopper 40 has a first end 43 and a second end 44 opposite to each other, 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 are close to each other along the first direction X, so as to limit the minimum distance between the stamping component 30 and the abutting surface 121 in the first direction X.

[0164] 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 two ends of the limiting member 40 in the first direction X are the first end 43 and the second end 44 respectively.

[0165] The first end 43 is connected to the first component 10, that is, the end surface of the first end 43 of the stopper 40 is connected to the fixed base 11 of the first component 10. The first end 43 of the stopper 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 stopper 40 can be connected to the fixed base 11 of the first component 10 in various structures, such as welding connection, clamping connection or bolt connection.

[0166] 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 limit member 40 to limit the minimum distance between the stamping part 30 and the abutting surface 121 in the first direction X.

[0167] Exemplarily, 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.

[0168] 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 limit 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.

[0169] According to some embodiments of the present application, referring to Figure 5 , Figure 5 A schematic diagram of the structure of a stamping device 100 provided in some embodiments of the present application. Along the first direction X, the stopper 40 has a first end 43 and a second end 44 opposite to each other, the second end 44 is connected to the second component 20, and the first end 43 is configured to abut against the first component 10 when the first component 10 and the second component 20 are close to each other along the first direction X, so as to limit the minimum distance between the stamping component 30 and the abutting surface 121 in the first direction X.

[0170] 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 two ends of the limiting member 40 in the first direction X are the first end 43 and the second end 44 respectively.

[0171] The second end 44 is connected to the second component 20, that is, the end surface of the second end 44 of the stopper 40 is connected to the second component 20. The second end 44 of the stopper 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 stopper 40 can be connected to the second component 20 in various structures, such as welding connection, clamping connection or bolt thread connection.

[0172] 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.

[0173] Exemplarily, 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.

[0174] 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 to approach 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.

[0175] According to some embodiments of the present application, see Figure 1 , Figure 2 and Figure 3 As shown, the abutting 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.

[0176] 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 in the first direction X facing upward toward the second component 20.

[0177] 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 from the first component 10 in the first direction X.

[0178] In this embodiment, by setting the abutment surface 121 of the first component 10 to support the workpiece along the first direction X, and setting the second component 20 to be a structure that can move relative to the first component 10 along the first direction X, 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 makes it easy for the stamping part 30 to stamp a groove 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 100 for processing and remove 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.

[0179] According to some embodiments of the present application, see Figure 1 , Figure 2 and Figure 3 As shown, the first component 10 may include 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 a side of the fixed base 11 facing the second component 20 along the first direction X, and a side of the support base 12 facing the second component 20 forms an abutment surface 121. Along the first direction X, the stopper 40 is arranged between the fixed base 11 and the second component 20.

[0180] 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.

[0181] 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 of the support seat 12 connected to the fixed base 11 can be various, such as welding connection, bolt connection or clamping, etc.

[0182] 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.

[0183] 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.

[0184] In this embodiment, the first component 10 is provided with a fixed base 11 and a support seat 12, and the support seat 12 is connected to the side of the fixed base 11 facing the second component 20, and the side of the support seat 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 limit member 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 limit member 40.

[0185] In some embodiments, see Figure 3 As shown, the stamping part 30 forms a stamping end 31 for stamping a groove on the workpiece at one end away from the second component 20 in the first direction X. Along the first direction X, the sum of the distance from the stamping end 31 to the second component 20 and the distance from the abutment surface 121 to the fixed base 11 is less than the height dimension of the limit member 40.

[0186] 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 to approach the abutment surface 121.

[0187] The distance from the stamping end 31 to the second component 20 is the distance between the 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. See. Figure 3 As shown, the distance from the punching end 31 to the second component 20 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, which is D1.

[0188] The distance from the abutting surface 121 to the fixed base 11 is the distance between the abutting 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 in which 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 abutting surface 121 to the fixed base 11 is the length of the support seat 12 in the first direction X. In the embodiment in which 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 abutting 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. See. Figure 3 As shown, the distance between the abutting surface 121 and the fixed base 11 is D2. The distance between the abutting surface 121 of the support seat 12 and the surface of the fixed base 11 facing the second component 20 is D2.

[0189] The height dimension of the stopper 40 is the length of the stopper 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 stopper 40 includes a first stopper portion 41 and a second stopper portion 42 disposed separately, the height of the stopper 40 is the sum of the length of the first stopper portion 41 in the first direction X and the length of the second stopper portion 42 in the first direction X. Correspondingly, see Figure 3 As shown, the height dimension L of the limiting member 40 is the sum of the length L1 of the first limiting portion 41 in the first direction X and the length L2 of the second limiting portion 42 in the first direction X. Figure 4 and Figure 5 In the figure, the limiting member 40 is an integral structure, and the height dimension L of the limiting member 40 is the length of the limiting member 40 in the first direction X, that is, the distance from the first end 43 of the limiting member 40 to the second end 44 of the limiting member 40 in the first direction X is L.

[0190] 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 out of contact with 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.

[0191] In some embodiments, see Figure 1 and Figure 2 As shown, there are multiple limiting members 40 , and the multiple limiting members 40 are arranged around the support seat 12 .

[0192] The plurality of limit members 40 are disposed around the support seat 12 , that is, the plurality of limit members 40 are arranged at intervals along the circumference of the support seat 12 .

[0193] For example, in Figure 1 In the embodiment, the stamping device 100 is provided with four stoppers 40, and the four stoppers 40 surround the outer side of the support seat 12. Of course, in other embodiments, the number of the stoppers 40 may also be one, two, three, five or six.

[0194] In this embodiment, the stamping equipment 100 is provided with a plurality of limit members 40, and the plurality of limit members 40 are structures arranged around the support seat 12, so that the plurality of limit members 40 are structures arranged at intervals along the circumference of the support seat 12. On the one hand, the effect of limiting the second component 20 and the fixed base 11 can be further improved, 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, the balance and stability of the force exerted by the limit members 40 on the second component 20 and the fixed base 11 can be improved, so as to alleviate the phenomenon that the fixed base 11 and the second component 20 are tilted due to local force, which is beneficial to improve the stability and reliability of the stamping workpiece of the stamping part 30.

[0195] According to some embodiments of the present application, see Figure 2 and Figure 3 As shown, 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 clamp the workpiece onto the abutment surface 121 when the first component 10 and the second component 20 approach each other along the first direction X.

[0196] The clamping mechanism 50 is disposed 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 .

[0197] 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.

[0198] According to some embodiments of this application, please continue to refer to Figure 2 and Figure 3 As shown, 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 against 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.

[0199] Among them, one end of the elastic member 52 is connected to the 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 the 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 for the pressing seat 51. It should be noted that the space size 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 each other, so that the stamping part 30 can punch a groove on the workpiece.

[0200] 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 a spring sheet connected between the pressing seat 51 and the second component 20 .

[0201] It should be noted that, in some embodiments, the clamping mechanism 50 may also be other structures, for example, the clamping mechanism 50 may be provided with only an elastic member 52, the elastic member 52 being connected to the side of the second component 20 facing the abutment surface 121 in the first direction X, and the elastic member 52 being able to abut against the workpiece when the first component 10 and the second component 20 approach each other in the first direction X, so as to press the workpiece against the abutment surface 121. In this embodiment, the elastic member 52 may be a spring or elastic rubber, etc.

[0202] 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, and the pressing seat 51 is a structure connected to the second component 20 through the elastic member 52, so that 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 elastic force to the pressing seat 51, so that the pressing seat 51 presses the workpiece against the abutting surface 121. Pressed against the abutment surface 121, the clamping mechanism 50 adopting 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 against the abutment surface 121 more firmly, which is beneficial to improving the stability and reliability of the clamping seat 51 pressing the workpiece.

[0203] In some embodiments, see Figure 3 As shown, the stamping part 30 forms a stamping end 31 for stamping a groove on the workpiece at one end away from the second component 20 in the first direction X. When the pressing seat 51 is not in contact with the workpiece, along the first direction X, the side of the pressing seat 51 used to abut against the workpiece is closer to the abutting surface 121 than the stamping end 31. That is, before the pressing seat 51 abuts against the workpiece, the pressing seat 51 is closer to the abutting surface 121 than the stamping part 30 in the first direction X.

[0204] Among them, in the embodiment where 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 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 used to abut the workpiece in the first direction X and the surface of the pressing seat 51 used to connect the elastic member 52.

[0205] In this embodiment, by setting the side of the clamping seat 51 that abuts against the workpiece 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 clamping seat 51 is not in contact with the workpiece, when the abutment surface 121 of the first component 10 and the second component 20 approach each other along the first direction X, the clamping seat 51 of the clamping mechanism 50 will contact the workpiece preferentially compared with the stamping part 30, so that before the stamping part 30 is stamped, the clamping seat 51 of the clamping mechanism 50 can press the workpiece on the abutment surface 121, thereby reducing 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.

[0206] According to some embodiments of the present application, see Figure 3 As shown, 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 part of the projection of the stamping part 30 is located in the through hole 511 .

[0207] Among them, 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 projection of the entire stamping part 30 is located in the through hole. For example, Figure 3 In the figure, the entire projection of the stamping part 30 in the first direction X is located in the through hole 511 .

[0208] In this embodiment, the clamping member is provided with a through hole 511 for the punching member 30 to pass through in the first direction X, 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 such a structure is convenient for 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 facilitating further improvement of the effect of the pressing seat 51 in pressing the workpiece. In addition, by locating the projection of the punching member 30 in the first direction X in the through hole 511, the scratching phenomenon between the punching member 30 and the pressing seat 51 when passing through the through hole 511 of the pressing seat 51 can be reduced.

[0209] According to some embodiments of the present application, see Figure 2 and Figure 3 As shown, there are multiple elastic members 52 , and the multiple elastic members 52 are arranged around the stamping member 30 .

[0210] 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 .

[0211] For example, in Figure 2 In the embodiment, the clamping 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.

[0212] 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 facilitating further improving the effect of the clamping seat 51 in clamping the workpiece against the abutting surface 121.

[0213] According to some embodiments of the present application, referring to Figure 2 and Figure 3 , and please refer to Figure 6 , Figure 6 A schematic diagram of the structure 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 convexly arranged on the surface of the connecting portion 32 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, and the stamping end 31 is used to stamp a groove on the workpiece.

[0214] 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, then 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.

[0215] 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.

[0216] The end of the cutter head 33 away from the connecting portion 32 in the first direction X forms a stamping end 31, that is, the end of the cutter head 33 facing the abutting surface 121 in the first direction X is the stamping end 31 of the stamping part 30, so that the cutter head 33 can stamp a groove on the workpiece. It should be noted that the length of the stamping part 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 cutter head 33 in the first direction X.

[0217] For example, in Figure 6 In the embodiment, 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 stamp out a groove of an "H"-shaped structure on the workpiece. Of course, in other embodiments, if it is necessary to stamp out a groove of 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.

[0218] Optionally, in Figure 6 In the embodiment, 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 a 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 In the embodiment, the connecting portion 32 is a rectangular parallelepiped structure extending along the first direction X. Of course, in other embodiments, refer to Figure 7 , Figure 7 A schematic diagram of the structure of the stamping parts of the stamping equipment provided for 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.

[0219] 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 at one end away from the second component 20 in the first direction X by welding, bonding or other structures.

[0220] In some embodiments, the cutter head 33 may include a first cutter body and a second cutter body, the first cutter body is convexly disposed on the surface of the connecting portion 32 on the side away from the second component 20 in the first direction X, the second cutter body is convexly disposed on the surface of the first cutter body on the side away from the connecting portion 32 in the first direction X, and the shape of the cross section of the second cutter body perpendicular to the first direction X is the same as the shape of 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 the workpiece, and the end of the second cutter body away from the first cutter body in the first direction X forms a punching end 31. The cutter head 33 with such a 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.

[0221] 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 difficulty of assembling 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.

[0222] According to some embodiments of the present application, see Figure 2 As shown, the stamping member 30 is detachably connected to the second component 20 .

[0223] 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 structure of the detachable connection between the stamping part 30 and the second component 20 can be various, 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 cutter head 33, the connecting portion 32 is detachably connected to the second component 20.

[0224] 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 application scope 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.

[0225] According to some embodiments of the present application, referring to Figure 8 , Fig. 9 and Fig.10 , Figure 8 A schematic diagram of the structure of a production system 1000 provided in some embodiments of the present application, Fig. 9 A front view of a production system 1000 provided for some embodiments of the present application, Fig.10The cross-sectional view of the 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 device 100 of any of the above solutions, wherein the workpiece is used to abut against the abutment surface 121 along the first direction X.

[0226] For example, in Fig. 9 and Fig.10 In the embodiment, the workpiece is the shell 61 of the 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 shell 60. Fig. 9 and Fig.10 , and please refer to Fig.11 and Fig.12 , Fig.11 The structure explosion diagram of the battery cell 200 provided in some embodiments of the present application is shown in FIG. Fig.12 A schematic diagram of the structure of the shell 61 of the shell 60 of the battery cell 200 provided in some embodiments of the present application. The battery cell 200 includes the shell 60, the electrode assembly 70 and the electrolyte, and the electrode assembly 70 and the electrolyte are both contained in the shell 60. The shell 60 includes a shell 61 and an end cover 62. A receiving cavity 611 is formed inside the shell 61, and the receiving cavity 611 has an opening 612, that is, the shell 61 is a hollow structure with at least one end open, and the end cover 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.

[0227] According to some embodiments of the present application, see Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, the workpiece is a shell 61 of a housing 60 of a battery cell 200, and a receiving cavity 611 having an opening 612 is formed inside the shell 61, and the shell 61 includes a wall portion 613. Part of the first component 10 is inserted into the receiving cavity 611 from the opening 612 to position the shell 61, and the abutting surface 121 is used to abut against the wall portion 613 along the first direction X, and the stamping part 30 is used to stamp a groove on the side of the wall portion 613 away from the abutting surface 121.

[0228] For example, in Fig.10 and Fig.12 In the figure, the shell 61 is a structure with an opening 612 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 the 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.

[0229] For example, in Fig. 9 and Fig.10 In the figure, the first component 10 is located below the second component 20 in the first direction X, and the shell 61 is sleeved 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 portion 613 of the shell 61 along the first direction X, and the side wall 614 surrounds the outer side of the support seat 12, so that the stamping part 30 can stamp a groove on the side of the wall portion 613 of the shell 61 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 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 both ends of the shell 61 may have openings 612, 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 portion 613 of the shell 61 downward along the first direction X, and apply downward pressure to the wall portion 613 of the shell 61 to cooperate with the stamping part 30 to stamp a groove on the side of the wall portion 613 of the shell 61 away from the accommodating cavity 611.

[0230] 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 .

[0231] 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 being able to position 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 beneficial to improving the accuracy of the stamping groove of the stamping part 30 on the wall 613 of the shell 61.

[0232] According to some embodiments of the present application, see Fig. 9 , Fig.10 and Fig.12 As shown, the workpiece is a shell 61 of a battery cell 200, and the shell 61 includes a wall portion 613 and a side wall 614. 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 surrounded to form an opening 612. The side wall 614 and the wall portion 613 jointly define a receiving cavity 611. Along the first direction X, part of the first component 10 is inserted into the receiving cavity 611 from the opening 612 to position the shell 61, and the abutting surface 121 is used to abut against the wall portion 613 along the first direction X, and the stamping part 30 is used to stamp a groove on the side of the wall portion 613 away from the abutting surface 121.

[0233] 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 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.

[0234] In this embodiment, the shell 61 includes a side wall 614 and a wall portion 613, and 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 structures arranged along the first direction X, so as to facilitate the insertion of part of the first component 10 from the opening 612 into the accommodating cavity 611 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 facilitate the stamping of the stamping part 30, which is beneficial to reduce the difficulty of processing the stamping groove on the shell 61, so as to improve production efficiency.

[0235] According to some embodiments of the present application, referring to Fig. 9 and Fig.10 As shown, the abutting surface 121 is used to support the wall portion 613 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 member 30 to stamp a groove on the side of the wall portion 613 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 sleeved on the first component 10.

[0236] 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 makes it easy for 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 it is convenient to put the shell 61 on the first component 10 for stamping processing and to remove it 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.

[0237] According to some embodiments of the present application, referring to Fig.10 and Fig.12 , and please refer to Fig.13 , Fig.13 for Fig.10 A partial enlarged view of the production system 1000 shown in FIG. 1 . 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 to each other along 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 an abutting surface 121. The stopper 40 is arranged between the fixed base 11 and the second component 20. The side wall 614 surrounds the outer side of the support base 12, and a gap is set between the side wall 614 and the support base 12. That is, after the support base 12 is inserted into the accommodating cavity 611 of the shell 61, a gap is formed between the side wall 614 of the shell 61 and the support base 12.

[0238] 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 as a structure that surrounds the outside of the support seat 12 and has a gap with the support seat 12, so as to facilitate the insertion of the support seat 12 into the accommodating cavity 611 of the shell 61 or withdraw 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.

[0239] In some embodiments, see Fig.10 and Fig.13 As shown, 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 through an arc surface 615. 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.

[0240] 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 an 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 through 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.

[0241] 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 structure arranged at intervals.

[0242] 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, so as to enhance the supporting effect of the abutting surface 121 on the wall portion 613, and further effectively alleviate 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.

[0243] According to some embodiments of the present application, Figure 3 and Fig.10 As shown, 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. The support base 12 is connected to the side of the fixed base 11 facing the second component 20. Part of 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 stopper 40 is arranged between the fixed base 11 and the second component 20. The stamping part 30 forms a stamping end 31 for stamping a groove on the workpiece at one end away from the second component 20 in the first direction X. Along the first direction X, the sum of the distance D1 from the stamping end 31 to the second component 20, the distance D2 from the abutment surface 121 to the fixed base 11, and the thickness of the wall portion 613 is greater than the height dimension L of the stopper 40.

[0244] 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 away from the abutting surface 121 .

[0245] 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, 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 component 20, the limiting member 40 limits the distance between the fixed base 11 and the second component 20, so that the stamping end 31 of the stamping part 30 can contact the wall portion 613 and punch a groove on the wall portion 613, which is beneficial to reduce the phenomenon that the stamping part 30 cannot be stamped on the wall portion 613 of the shell 61.

[0246] 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.

[0247] Illustratively, the protective oil may be stretching oil or lubricating oil, or the like.

[0248] 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 reducing the risk of the inner surface of the shell 61 being scratched by the first component 10.

[0249] 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 the embodiment where the first component 10 includes a fixed base 11 and a support base 12, the Brinell hardness of the material of the fixed base 11 and the support base 12 is greater than the Brinell hardness of the material of the workpiece.

[0250] 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.

[0251] 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 cutter head 33, the Brinell hardness of the material of the connecting portion 32 and the cutter head 33 is greater than the Brinell hardness of the material of the workpiece.

[0252] In this embodiment, by setting the Brinell hardness of the material of the stamping part 30 to be greater than the Brinell hardness of the workpiece material, the deformation or damage of the stamping part 30 during the stamping of the workpiece is alleviated, which is beneficial to improving the processing quality of the workpiece.

[0253] 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 the embodiment 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.

[0254] 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 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.

[0255] 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 stopper 40 includes steel, and the material of the workpiece includes aluminum.

[0256] 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.

[0257] According to some embodiments of the present application, see Figures 1 to 3 as well as Figure 6 to Figure 7As shown, the present application provides a stamping device 100, which includes a first component 10, a second component 20, a stamping part 30, a stopper 40 and a clamping mechanism 50. The first component 10 has an abutment surface 121, and the abutment surface 121 is used to support 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 is located above the first component 10 in the first direction X, and 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 abutting surface 121. The stamping part 30 includes a connecting portion 32 and a cutter head 33. The connecting portion 32 and the cutter head 33 are an integrally formed structure. The connecting portion 32 is connected to the side of the second component 20 facing the abutting surface 121. The cutter head 33 is convexly arranged on the surface of the connecting portion 32 away from the second component 20 in the first direction X. The end of the cutter head 33 away from the connecting portion 32 in the first direction X forms a stamping end 31, and the stamping end 31 is used to stamp a groove on the workpiece. The limiter 40 is arranged between the first component 10 and the second component 20, and the limiter 40 is configured to limit the minimum distance between the stamping part 30 and the abutting 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, and 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 stopper 40 includes a first stopper 41 and a second stopper 42 which are arranged opposite to each other along the first direction X, one end of the first stopper 41 is connected to the surface of the fixed base 11 of the first component 10 on one side facing the second component 20 in the first direction X, one end of the second stopper 42 is connected to the surface of the second component 20 on one side facing the fixed base 11 of the first component 10 in the first direction X, and the other end of the second stopper 42 and the other end of the first stopper 41 are configured to abut against each other when the second component 20 approaches the abutting surface 121 along the first direction X, so as to limit the minimum distance between the stamping part 30 and the abutting surface 121 in the first direction X. Along the first direction X, the length L1 of the first stopper 41 is equal to the length L2 of the second stopper 42, and the area of ​​the minimum cross section of the first stopper 41 perpendicular to the first direction X is equal to the area of ​​the minimum cross section of the second stopper 42 perpendicular to the first direction X. There are multiple stoppers 40, and the multiple stoppers 40 are arranged around the support seat 12.The clamping mechanism 50 includes 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 abutting surface 121 and is connected to the side of the second component 20 facing the abutting 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 clamping seat 51 abuts against the workpiece. The clamping seat 51 is used to clamp the workpiece against the abutting surface 121 when the second component 20 approaches the abutting surface 121 along the first direction X. When the clamping seat 51 is not in contact with the workpiece, along the first direction X, the side of the clamping seat 51 used to abut against the workpiece is closer to the abutting surface 121 than the stamping end 31. The clamping seat 51 is provided with a through hole 511 for the stamping part 30 to pass through. The through hole 511 penetrates the clamping seat 51 along the first direction X, and the projection of the stamping part 30 in the first direction X is located in the through hole 511. There are multiple elastic members 52 , and the multiple elastic members 52 are arranged around the stamping member 30 .

[0258] According to some embodiments of the present application, see Figures 8 to 13As shown, the present application provides a production system 1000, which includes a workpiece and a stamping device 100 of any of the above schemes. The workpiece is a shell 61 of the outer shell 60 of the battery cell 200, and the interior of the shell 61 forms a receiving cavity 611 with 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 is surrounded to form an opening 612. The side wall 614 and the wall portion 613 jointly define a receiving cavity 611 for receiving the electrode assembly 70, and the cavity wall surface of the receiving cavity 611 is coated with protective oil. Along the first direction X, part of the first component 10 is inserted into the accommodating cavity 611 from the opening 612 to position the shell 61, and the abutting surface 121 is used to support the wall portion 613 of the shell 61, and the stamping member 30 is used to stamp a groove on the side of the wall portion 613 away from the abutting surface 121. The first component 10 includes a fixed base 11 and a support seat 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 seat 12 is connected to the side of the fixed base 11 facing the second component 20. The support seat 12 is inserted into the accommodating cavity 611, and the side of the support seat 12 facing the second component 20 forms the abutting surface 121. The stopper 40 is arranged between the fixed base 11 and the second component 20, and the side wall 614 surrounds the outer side of the support seat 12, and the side wall 614 and the support seat 12 are arranged with a gap. 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 through an arc surface 615. 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. The stamping part 30 is formed at one end away from the second component 20 in the first direction X with a stamping end 31 for stamping a groove on the workpiece. Along the first direction X, the sum of the distance D1 from the stamping end 31 to the second component 20, the distance D2 from the abutting surface 121 to 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, 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.

[0259] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0260] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A stamping equipment, characterized in that: include: 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, arranged opposite to the abutting 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; 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 limiter is disposed between the first component and the second component, and the limiter is configured to limit a minimum distance between the stamping component and the abutting surface in the first direction.

2. The punching equipment according to claim 1, characterized in that: The limiting member includes a first limiting portion and a second limiting portion which are arranged opposite to each other along a first direction, wherein 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 are close to 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, characterized in that 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 stamping equipment according to claim 2, characterized in that The minimum rigidity of the first limiting portion is greater than or equal to 6.25×10 10 N / m; and / or The minimum rigidity of the second limiting portion is greater than or equal to 6.25×10 10 N / m.

5. The stamping equipment according to claim 2, characterized in that: 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 punching equipment according to claim 5, characterized in that Along the first direction, the length of the first limiting portion is equal to the length of the second limiting portion.

7. The punching equipment according to claim 2, characterized in that: 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 punching equipment according to claim 1, characterized in that 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.

9. The punching equipment according to claim 1, characterized in that: 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 are close to each other, so as to limit the minimum distance between the stamping part and the abutment surface in the first direction.

10. The punching equipment according to claim 1, characterized in that 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 punching device according to claim 10, characterized in that The first component comprises: 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, and a 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 punching device according to claim 11, characterized in that One 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. Along the first direction, the sum of the distance from the stamping end to the second component and the distance from the abutment surface to the fixed base is less than the height dimension of the limit member.

13. The punching device according to claim 11, characterized in that There are multiple limiting members, and the multiple limiting members are arranged around the supporting seat.

14. The punching device according to any one of claims 1 to 13, characterized in that: The stamping equipment also includes: A clamping mechanism is connected to the second component, and is used to press the workpiece onto the abutting surface when the first component and the second component are close to each other.

15. The punching device according to claim 14, characterized in that The clamping 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 member 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 punching device according to claim 15, characterized in that An 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; Wherein, when the pressing seat is not in contact with the workpiece, along the first direction, the side of the pressing seat used for abutting against the workpiece is closer to the abutting surface than the punching end.

17. The punching device according to claim 15, characterized in that 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.

18. The punching device according to claim 17, characterized in that There are a plurality of elastic members, and the plurality of elastic members are arranged around the stamping member.

19. The punching device according to claim 1, characterized in that The stamping part comprises: A connecting portion connected to a side of the second component facing the abutting surface; A tool head is protrudingly arranged on a surface of the connecting portion away from the second component in the first direction, and an end of the tool head away from the connecting portion in the first direction forms a stamping end, and the stamping end is used for stamping a groove on the workpiece.

20. The punching device according to claim 1, characterized in that The stamping member is detachably connected to the second component.

21. A production system, characterized in that: include: The stamping device according to any one of claims 1 to 20; as well as A workpiece is used to abut against the abutment surface along the first direction.

22. The production system according to claim 21, characterized in that The workpiece is a shell of a battery cell, a receiving 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, characterized in that The housing comprises a side wall and the wall portion, wherein the side wall is disposed 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 together define a receiving 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.

24. The production system according to claim 23, characterized in that The abutting 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 a side of the wall portion away from the abutting surface.

25. The production system according to claim 24, characterized in that The first component includes a fixed base and a support base. Along the first direction, the fixed base is arranged opposite to the second component. 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 a side of the support base facing the second component forms the abutting surface. The limiting member is arranged between the fixed base and the second component. The side wall surrounds the outer side of the support seat, and a gap is set between the side wall and the support seat.

26. The production system according to claim 25, characterized in that 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.

27. The production system according to any one of claims 24 to 26, characterized in that: The first component includes a fixed base and a support base. Along the first direction, the fixed base is arranged opposite to the second component. 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. A side of the support base facing the second component forms the abutting surface. The stopper is arranged between the fixed base and the second component. Among them, one 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 limit member.

28. The production system according to claim 22, characterized in that The cavity wall surface of the accommodating cavity is coated with protective oil.

29. The production system according to claim 21, characterized in that 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 stopper is greater than the Brinell hardness of the material of the workpiece.

30. The production system according to claim 29, characterized in that 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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