Press forming method applied to battery component

Abstract

The application provides a stamping forming method applied to a battery component, which comprises the following steps: providing a support, the support having a top surface and two side surfaces, the top surface being provided with a forming hole, and a limiting sliding convex platform being arranged on the top surface and protruding from the top surface, the two side surfaces being arranged on opposite sides of the support and intersecting with the top surface; providing the battery component, the battery component having a top plate and two side plates, the top plate being connected with the two side plates, the battery component being installed on the support so that the limiting sliding convex platform abuts against the bottom side of the top plate and the side surfaces abut against the inner sides of the side plates; providing a pressing element, and the pressing element abutting against the side plates so that the side plates are attached to the side surfaces; and providing a punch, the battery component being extruded by the punch and the limiting sliding convex platform so that the battery component is attached to the top surface, and part of the top plate is punched into the forming hole by the punch so that a through hole is formed on the top plate. The stamping forming method applied to the battery component can improve the processing quality.

Description

Technical Field

[0001] This invention relates to the field of stamping technology, and in particular to a stamping method for battery components. Background Technology

[0002] In the production process of power batteries, battery components need to be processed to form the battery casing. A battery component typically has a top plate and two spaced-apart side plates connected by the top plate, with the side plate surfaces intersecting the top plate surface. During the processing of the battery component, the top plate needs to be stamped to form through holes, thus forming the battery casing. In existing technology, during the stamping process of the top plate, wrinkles are generated around the through holes, resulting in an uneven surface and poor processing quality. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a stamping method for battery components that can improve processing quality.

[0004] This invention provides a stamping forming method for battery components, comprising: providing a support member having a top surface and two side surfaces; a forming hole being formed on the top surface; a limiting sliding boss being provided on the top surface, the limiting sliding boss protruding relative to the top surface along the axial direction of the forming hole; the two side surfaces being located on opposite sides of the support member along a direction perpendicular to the axial direction of the forming hole and intersecting the top surface; providing a battery component having a top plate and two spaced-apart side plates; the top plate connecting the two side plates; mounting the battery component on the support member such that the limiting sliding boss abuts against the bottom side of the top plate, and the two side surfaces abut against the inner side of the corresponding side plates; providing a clamping member and abutting against the side plates to make the side plates fit against the side surfaces; providing a punch, which, through the punch and the limiting sliding boss, squeezes the battery component from opposite sides to deform the battery component to partially fit against the top surface, and punches a portion of the top plate into the forming hole to form a through hole on the top plate.

[0005] The stamping method for battery components provided by the embodiments of the present invention has at least the following beneficial effects: The side plates are fitted to the sides by clamping components, which restricts their sliding. The two side plates connect to the top plate, allowing the top plate to be tensioned from opposite sides. When a through-hole is formed on the top plate, the portion of the top plate surrounding the through-hole is prevented from contracting towards it, thus reducing the risk of wrinkles around the through-hole. Before stamping, the top plate abuts against the limiting-slip boss. During stamping, the top plate deforms to partially conform to the top surface, covering part of the limiting-slip boss. This allows the limiting-slip boss to restrict the top plate from sliding in a direction parallel to the top surface, further reducing the risk of wrinkles and improving processing quality.

[0006] In one embodiment of this implementation, a support member is provided, including: The limiting boss extends around the forming hole to form a ring.

[0007] In one embodiment of this implementation, a support member is provided, including: The forming hole has forming blades on its wall. A punch is used to punch part of the top plate into the forming hole, and the top plate abuts against the forming blades so that the forming blades cut off part of the top plate.

[0008] In one embodiment of this implementation, a support member is provided, including: The limiting boss has an annular inner sidewall, which surrounds to form a limiting opening. The limiting opening connects to the forming hole, and the hole wall of the forming hole connects to the annular inner sidewall and is flush with the annular inner sidewall.

[0009] In one embodiment of this implementation, the top surface is perpendicular to the first direction, the side surface is perpendicular to the second direction, the first direction is perpendicular to the second direction, the support member has an arc-shaped surface, the axis of the arc-shaped surface is parallel to the third direction, the third direction is perpendicular to the first direction and the second direction, and the arc-shaped surface connects the side surface and the top surface.

[0010] In one embodiment of this implementation, a support member is provided, including: A slip limiting component is provided, which has a slip limiting arc surface, a first slip limiting surface, and a second slip limiting surface. The first slip limiting surface is perpendicular to a first direction, and the second slip limiting surface is perpendicular to a second direction. The slip limiting component is installed on a support member so that the first slip limiting surface and the top surface press the top plate together from opposite sides, and the second slip limiting surface and the side surface press the side plate together from opposite sides. The slip limiting arc surface presses the battery component together so that part of the battery component fits against the arc surface.

[0011] In one embodiment of this implementation, a support member is provided, including: Two slip limiting elements are provided and mounted on the support member with the two slip limiting elements spaced apart along a third direction, such that the forming hole is opposite to the gap between the two slip limiting elements.

[0012] In one embodiment of this implementation, the side of the limiting boss away from the inner annular wall is formed with an outer annular wall, which is connected to the top surface and smoothly transitions with the top surface.

[0013] In one embodiment of this implementation, the limiting boss has a straight portion and an arc-shaped portion. The axis of the forming hole is parallel to a first direction, and the side is perpendicular to a second direction. The first direction is perpendicular to the second direction. The arc-shaped portion extends circumferentially along an axis parallel to the first direction, and the straight portion extends along a third direction. The third direction is perpendicular to the first and second directions. One end of the straight portion is connected to the arc-shaped portion.

[0014] In one embodiment of this implementation, a punch is provided, comprising: The punch has a contact surface that is parallel to the top surface. A stamping protrusion is formed on the contact surface, and a receiving groove is provided on the contact surface. Part of the top plate is punched into the forming hole by the stamping protrusion, and part of the battery component is pressed into the receiving groove by the limiting slip boss. The battery component is pressed together from opposite sides by the contact surface and the top surface.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of a stamping forming method applied to battery components according to one embodiment of the present invention; Figure 2 yes Figure 1 A three-dimensional structural diagram of the battery components, support components, and clamping components; Figure 3 yes Figure 2 A three-dimensional structural diagram of the support components and the slip-limiting components; Figure 4 yes Figure 3 Enlarged schematic diagram of part of the structure; Figure 5 yes Figure 3 A three-dimensional structural diagram of the anti-slip component; Figure 6 yes Figure 2 A three-dimensional structural diagram of the battery components mounted on the support; Figure 7 yes Figure 6 A schematic diagram of the three-dimensional structure of the battery component after the through-hole is formed; Figure 8 yes Figure 2 A three-dimensional structural diagram of the punch.

[0017] Figure label: Support component 10; top surface 11; side surface 12; forming hole 13; limited slip boss 14; annular inner wall 141; annular outer wall 142; limited slip opening 143; straight part 144; arc-shaped part 145; arc-shaped surface 15; limited slip component 20; first limited slip surface 21; second limited slip surface 22; limited slip arc surface 23; clamping component 30; punch 40; stamping protrusion 41; receiving groove 42; mating surface 43; battery component 200; top plate 210; side plate 220; through hole 230. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0022] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0024] This invention provides a stamping method for a battery component 200. Please refer to [link to relevant documentation]. Figure 1 , Figure 1 This is a schematic diagram of a stamping method applied to a battery component 200 according to one embodiment of the present invention. The stamping method applied to the battery component 200 includes: Step S100: A support member 10 is provided. The support member 10 has a top surface 11 and two side surfaces 12. A forming hole 13 is provided on the top surface 11. A limited sliding boss 14 is provided on the top surface 11. The limited sliding boss 14 protrudes relative to the top surface 11 along the axial direction of the forming hole 13. The two side surfaces 12 are located on opposite sides of the support member 10 along the direction perpendicular to the axial direction of the forming hole 13 and intersect with the top surface 11.

[0025] For details, please refer to Figures 2 to 4 , Figure 2 yes Figure 1 A three-dimensional structural diagram of the battery component 200, support 10, and clamping component 30, etc. Figure 3 yes Figure 2 A three-dimensional structural diagram of the support member 10 and the slip limiting member 20; Figure 4 yes Figure 3 An enlarged schematic diagram of a portion of the structure. The top surface 11 is perpendicular to the Z direction, the side surface 12 is perpendicular to the X direction, the two side surfaces 12 are spaced apart along the X direction, the two side surfaces 12 are located on opposite sides of the support member 10 along the X direction, the axis of the forming hole 13 is parallel to the Z direction, and a portion of the support member 10 protrudes relative to the top surface 11 along the Z direction to form a limiting slip boss 14.

[0026] In step S200, a battery component 200 is provided, which has a top plate 210 and two spaced-apart side plates 220. The top plate 210 connects to the two side plates 220. The battery component 200 is mounted on the support member 10 so that the limiting slip boss 14 abuts against the bottom side of the top plate 210 and the two side plates 12 abut against the inner side of the corresponding side plates 220.

[0027] For details, please refer to Figures 2 to 4 The surfaces of the top plate 210 and the side plates 220 intersect, and the surfaces of the side plates 220 and the top plate 210 intersect. The two side plates 220 are spaced apart along the X direction. The support member 10 extends into the gap between the two side plates 220, so that the two side surfaces 12 abut against the inner sides of the two side plates 220 in a one-to-one correspondence. The sliding boss 14 abuts against the bottom surface of the top plate 210. In the projection plane perpendicular to the Z direction, the projected area of ​​the sliding boss 14 is smaller than the projected area of ​​the top plate 210, so that part of the top plate 210 is supported by the sliding boss 14, while another part of the top plate 210 is not supported by the sliding boss 14. The part of the top plate 210 not supported by the sliding boss 14 is spaced apart from the top surface 11 along the Z direction.

[0028] In step S300, a clamping member 30 is provided and the clamping member 30 is made to abut against the side plate 220 so that the side plate 220 fits against the side 12.

[0029] For details, please refer to Figure 1 and Figure 6 , Figure 6 yes Figure 2 This is a three-dimensional structural diagram of the battery component 200 mounted on the support member 10. A clamping member 30 is positioned on one side of the support member 10 along the X-direction, so that the clamping member 30 faces the side 12 and abuts against the outer side of the side plate 220, thereby clamping the side plate 220 from opposite sides. In some embodiments, two clamping members 30 may be provided, spaced apart along the X-direction, with the support member 10 positioned in the gap between the two clamping members 30. The two clamping members 30 abut against the two side plates 220 in a one-to-one correspondence, clamping the battery component 200 from opposite sides of the support member 10 along the X-direction. This arrangement improves the fixation effect on the side plate 220.

[0030] In step S400, a punch 40 is provided, and the battery component 200 is pressed from opposite sides by the punch 40 and the limiting slip boss 14 to deform the battery component 200 to partially fit the top surface 11. A portion of the top plate 210 is punched into the forming hole 13 by the punch 40 to form a through hole 230 on the top plate 210.

[0031] For details, please refer to Figure 1 , Figures 6 to 8 , Figure 7 yes Figure 6 A three-dimensional structural diagram of the battery component 200 after the through hole 230 is formed; Figure 8 yes Figure 2 A three-dimensional structural diagram of the punch 40. The punch 40 presses the top plate 210 from the side away from the support member 10 and extends the punch 40 into the forming hole 13, so that the punch 40 punches part of the top plate 210 into the forming hole 13, thereby forming a through hole 230 on the top plate 210.

[0032] It should be noted that the part of the top plate 210 corresponding to the position where the through hole 230 needs to be formed is defined as the forming part. During the process of the punch 40 punching the top plate 210, the punch 40 punches the forming part into the forming hole 13. The punch 40 will stretch the part of the top plate 210 located around the forming part toward the forming hole 13, so that the part of the top plate 210 located around the forming part slides toward the forming hole 13 and shrinks. When the top plate 210 shrinks toward the forming hole 13, wrinkles are easily generated on the top plate 210.

[0033] Understandably, during the process of punching the top plate 210, the punch 40 can apply a force parallel to the Z direction and toward the top surface 11 to the top plate 210, so that the part of the top plate 210 not supported by the sliding boss 14 moves toward the top surface 11 and fits against the top surface 11. The sliding boss 14 can apply a force along the Z direction away from the top surface 11 to the top plate 210, so that the sliding boss 14 is embedded in the plate surface of the top plate 210 on the side facing the top surface 11, and a forming groove is formed on the plate surface of the top plate 210 on the side facing the top surface 11, so that the top plate 210 partially covers the sliding boss 14 through the forming groove. After the top plate 210 covers the sliding boss 14, the sliding boss 14 can apply a force parallel to the top surface 11 to the inner wall of the forming groove, so as to restrict the part of the top plate 210 located around the forming part from shrinking toward the forming hole 13. The side plate 220 is fixed to the side 12 of the support member 10 by the clamping member 30, so that the side plate 220 can tension the top plate 210 from the opposite sides of the molding part along the X direction, thereby further reducing the risk of the top plate 210 shrinking toward the molding hole 13.

[0034] The stamping forming method of the present invention applied to battery component 200 uses a clamping member 30 to press the side plate 220 against the side surface 12, which can restrict the sliding of the side plate 220. The two side plates 220 are connected to the top plate 210, so that the top plate 210 can be tensioned from opposite sides by the side plates 220. When the through hole 230 is formed on the top plate 210, the portion of the top plate 210 around the through hole 230 is restricted from shrinking towards the through hole 230, thereby reducing the risk of wrinkles around the through hole 230. Before stamping the top plate 210, the top plate 210 abuts against the limiting boss 14. When stamping the top plate 210, the top plate 210 deforms to partially fit against the top surface 11, so that the top plate 210 partially covers the limiting boss 14, and the limiting boss 14 can restrict the top plate 210 from sliding in a direction parallel to the top surface 11, thereby further reducing the risk of wrinkles in the top plate 210 and improving the processing quality.

[0035] Please see Figures 2 to 4 In one embodiment of this implementation, a support member 10 is provided, comprising: The limiting boss 14 extends around the forming hole 13 to form a ring.

[0036] Specifically, the limiting boss 14 is extended along the annular path so that the forming hole 13 is opposite to the hollow part of the annular structure formed by the extension of the limiting boss 14.

[0037] Understandably, the limiting boss 14 can provide a force to the top plate 210 that is parallel to the top surface 11 and perpendicular to the extension path of the limiting boss 14, so as to limit the slippage of the top plate 210. The limiting boss 14 extends around the forming hole 13 along the annular path to form an annular ring, so that the limiting boss 14 can apply forces to the top plate 210 in multiple directions, thereby improving the limiting effect of the limiting boss 14 on the top surface 11, thereby further reducing the risk of wrinkles in the top plate 210, and further improving the processing quality.

[0038] Please see Figures 2 to 4 In one embodiment of this implementation, a support member 10 is provided, comprising: A forming blade is provided on the wall of the forming hole 13. A portion of the top plate 210 is punched into the forming hole 13 by the punch 40, and the top plate 210 abuts against the forming blade so that the forming blade cuts off a portion of the top plate 210.

[0039] Specifically, a portion of the hole wall of the forming hole 13 protrudes to form a forming blade. It is understood that by setting the forming blade, the force required to form the through hole 230 on the top plate 210 can be reduced, thereby reducing the force that the punch 40 needs to apply to the top plate 210, thus reducing the risk of the top plate 210 slipping and shrinking toward the forming hole 13, and thus improving the processing quality.

[0040] Please see Figures 2 to 4 In one embodiment of this implementation, a support member 10 is provided, comprising: The sliding boss 14 has an annular inner sidewall 141, which surrounds and forms a sliding opening 143. The sliding opening 143 is connected to the forming hole 13. The hole wall of the forming hole 13 is connected to the annular inner sidewall 141 and is flush with the annular inner sidewall 141.

[0041] Specifically, the hole wall of the forming hole 13 is perpendicular to the Z direction, and the annular inner sidewall 141 is perpendicular to the Z direction. In the projection plane perpendicular to the Z direction, the projection of the hole wall of the forming hole 13 and the projection of the annular inner sidewall 141 coincide.

[0042] Understandably, when the punch 40 presses against the top plate 210, a portion of the top plate 210 will abut against the annular inner sidewall 141 and slide along the annular inner sidewall 141 to the wall of the forming hole 13. Making the annular inner sidewall 141 flush with the forming hole 13 reduces the resistance experienced by the top plate 210 during the process of the punch 40 pressing the top plate 210 into the forming hole 13, thus reducing the risk of wrinkles forming on the top plate 210.

[0043] Please see Figures 2 to 4In one embodiment of this implementation, the top surface 11 is perpendicular to the first direction, the side surface 12 is perpendicular to the second direction, the first direction is perpendicular to the second direction, the support member 10 has an arc-shaped surface 15, the axis of the arc-shaped surface 15 is parallel to the third direction, the third direction is perpendicular to the first direction and the second direction, and the arc-shaped surface 15 connects the side surface 12 and the top surface 11.

[0044] Specifically, the top surface 11 is perpendicular to the Z direction, the side surface 12 is perpendicular to the X direction, and the axis of the arc surface 15 is parallel to the Y direction.

[0045] Understandably, when the side plate 220 tensions the top plate 210, the side plate 220 may elongate under the force of the top plate 210 and slide along the side 12 to the top surface 11, connecting the side 12 and the top surface 11 through the arc surface 15. When the side wall slides under the force of the top plate 210, the side plate 220 can slide from the side 12 to the top surface 11 through the arc surface 15. The arc surface 15 can make the side 12 and the top surface 11 smoothly connected and can reduce the friction force applied by the support member 10 when the side plate 220 slides, so as to reduce the risk of wrinkles caused by the scraping of the support member 10, thereby improving the processing quality.

[0046] Please see Figures 2 to 3 , Figures 5 to 6 , Figure 5 yes Figure 3 A three-dimensional structural schematic diagram of the anti-slip element 20. In one embodiment of this implementation, a support element 10 is provided, including: A slip limiting component 20 is provided, which has a slip limiting arc surface 23, a first slip limiting surface 21, and a second slip limiting surface 22. The first slip limiting surface 21 is perpendicular to a first direction, and the second slip limiting surface 22 is perpendicular to a second direction. The slip limiting component 20 is installed on the support member 10 so that the first slip limiting surface 21 and the top surface 11 press the top plate 210 from opposite sides, and the second slip limiting surface 22 and the side surface 12 press the side plate 220 from opposite sides. The battery component 200 is pressed by the slip limiting arc surface 23 so that a portion of the battery component 200 fits against the arc surface 15.

[0047] Specifically, the first limiting surface 21 is perpendicular to the Z direction, the second limiting surface 22 is perpendicular to the X direction, and the axis of the limiting arc surface 23 is parallel to the Y direction. The limiting component 20 can be installed on the support component 10 by means of bolt connection, magnetic attraction, snap-fit, welding, and bonding. When the limiting component 20 is installed on the support component 10, part of the top plate 210 is located between the first limiting surface 21 and the top surface 11, part of the side plate 220 is located between the second limiting surface 22 and the side surface 12, and the connection between the side plate 220 and the top plate 210 is located between the arc surface 15 and the limiting arc surface 23.

[0048] It is understandable that by installing the slip limiting component 20 on the support component 10, the opposite sides of the top plate 210 can be in contact with the first slip limiting surface 21 and the top surface 11 respectively, and the opposite sides of the side plate 220 can be in contact with the second limiting surface and the side surface 12 respectively, so as to limit the wrinkling deformation of the top plate 210 and the side plate 220. The slip limiting arc surface 23 can make the connection between the side plate 220 and the top plate 210 in contact with the arc surface 15, so as to improve the fixing effect of the support component 10 on the battery component 200.

[0049] Please see Figure 3 and Figure 6 In one embodiment of this implementation, a support member 10 is provided, comprising: Two slip limiting elements 20 are provided and mounted on the support 10 with the two slip limiting elements 20 spaced apart along a third direction, such that the forming hole 13 is opposite to the gap between the two slip limiting elements 20.

[0050] Specifically, two slip limiting members 20 are arranged at intervals along the Y direction and installed on the support member 10. The battery component 200 is installed on the support member 10 through the cooperation of the two slip limiting members 20. The gap between the two slip limiting members 20 exposes the forming part on the top plate 210 to the side of the slip limiting member 20 away from the support member 10 along the Z direction, so that the punch 40 can punch the top plate 210 through the gap between the two slip limiting members 20.

[0051] It is understandable that by setting two anti-slip elements 20, the fixing area of ​​the battery component 200 can be increased, the fixing effect of the battery component 200 can be improved, and the risk of wrinkles in the top plate 210 and side plate 220 can be further reduced.

[0052] Please see Figures 2 to 4 In one embodiment of this implementation, the sliding boss 14 has an annular outer wall 142 formed on the side opposite to the annular inner wall 141. The annular outer wall 142 is connected to the top surface 11 and smoothly transitions with the top surface 11.

[0053] Specifically, the annular outer wall 142 and the top surface 11 are connected by an arc-shaped curved surface. It can be understood that making the annular outer wall 142 and the top surface 11 smoothly transition allows the force changes of each part of the top plate 210 being pressed by the limiting boss 14 to form the forming groove on the top plate 210 to be continuous. This reduces the risk of stress concentration points appearing on the top plate 210 during the pressing process of the limiting boss 14, which could lead to wrinkles in the top plate 210.

[0054] Please see Figures 2 to 4In one embodiment of this implementation, the limiting boss 14 has a straight portion 144 and an arc-shaped portion 145. The axis of the forming hole 13 is parallel to the first direction, the side surface 12 is perpendicular to the second direction, the first direction is perpendicular to the second direction, the arc-shaped portion 145 extends circumferentially along the axis parallel to the first direction, the straight portion 144 extends along a third direction, the third direction is perpendicular to the first direction and the second direction, and one end of the straight portion 144 is connected to the arc-shaped portion 145.

[0055] Specifically, the axis of the forming hole 13 is parallel to the Z direction, the straight part 144 extends along the Y direction, and the arc-shaped part 145 extends circumferentially along the axis parallel to the Z direction. There are two straight parts 144 and two arc-shaped parts 145. The two straight parts 144 are arranged alternately along the X direction, and the two arc-shaped parts 145 are arranged alternately along the Y direction. The two ends of the straight part 144 are connected to the two arc-shaped parts 145 respectively. The two straight parts 144 and the two arc-shaped parts 145 work together to form an annular limiting boss 14.

[0056] Understandably, please refer to the following as well. Figure 7 Under certain conditions, in order to adapt the battery component 200 to the battery structure, it is necessary to stamp through holes 230 with arc-shaped and straight hole walls on the top plate 210. The straight hole wall is perpendicular to the X direction, and the axis of the arc-shaped hole wall is parallel to the Z direction, so that the limiting boss 14 has an arc-shaped part 145 and a straight part 144. This allows the support member 10 to adapt to the stamping process of the through holes 230 with arc-shaped and straight hole walls, which is beneficial to improving adaptability.

[0057] Please see Figures 2 to 4 , Figure 8 In one embodiment of this implementation, a punch 40 is provided, comprising: The punch 40 has a contact surface 43, which is parallel to the top surface 11. A stamping protrusion 41 is formed on the contact surface 43, and a receiving groove 42 is provided on the contact surface 43. A portion of the top plate 210 is punched into the forming hole 13 by the stamping protrusion 41, and a portion of the battery component 200 is pressed into the receiving groove 42 by the limiting slip boss 14. The battery component 200 is pressed together from opposite sides by the contact surface 43 and the top surface 11.

[0058] Specifically, the mating surface 43 is perpendicular to the Z direction, the stamping protrusion 41 is located on one side of the mating surface 43 along the Z direction, the stamping protrusion 41 protrudes relative to the mating surface 43 along the Z direction, the shape of the stamping protrusion 41 is adapted to the shape of the forming hole 13, the shape of the receiving groove 42 is adapted to the shape of the sliding boss 14, and the receiving groove 42 extends around the stamping protrusion 41.

[0059] Understandably, the stamping protrusion 41 can abut against the forming part on the top plate 210. The stamping protrusion 41 can extend into the forming hole 13 to punch the forming part into the forming hole 13. During the process of the stamping protrusion 41 extending into the forming hole 13, the mating surface 43 can abut against the top plate 210 and work together with the limiting slip boss 14 to squeeze and deform the top plate 210 from opposite sides so that the part of the top plate 210 surrounding the forming part fits against the top surface 11. The limiting slip boss 14 can press part of the top plate 210 into the receiving groove 42 and form a forming groove on the top plate 210 so that the top plate 210 deforms to cover part of the limiting slip boss 14. The inner walls of the limiting boss 14 and the receiving groove 42 can press the top plate 210 from opposite sides to limit the slippage of the top plate 210. The mating surface 43 and the top surface 11 can be mated with the two opposite surfaces of the top plate 210 to limit the bending of the bottom plate, thereby further reducing the risk of wrinkles on the top plate 210 and improving the processing quality.

[0060] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A stamping forming method for battery components, characterized in that, include: A support member is provided, the support member having a top surface and two side surfaces. A forming hole is formed on the top surface, and a limiting sliding boss is provided on the top surface. The limiting sliding boss protrudes relative to the top surface along the axial direction of the forming hole. The two side surfaces are located on opposite sides of the support member along a direction perpendicular to the axial direction of the forming hole and intersect with the top surface. A battery component is provided, the battery component having a top plate and two spaced-apart side plates, the top plate connecting the two side plates, the battery component being mounted on the support member such that the limiting slip boss abuts against the bottom side of the top plate, and the two side plates abut against the inner side of the corresponding side plates respectively; A clamping element is provided and abuts against the side plate to make the side plate fit against the side surface; A punch is provided to press the battery component from opposite sides through the punch and the limiting slip boss, so that the battery component is deformed to partially fit the top surface, and a portion of the top plate is punched into the forming hole through the punch to form a through hole on the top plate.

2. The stamping forming method for battery components according to claim 1, characterized in that, The provided support includes: The limiting boss extends around the molding hole to form a ring.

3. The stamping forming method for battery components according to claim 1, characterized in that, The provided support includes: A forming blade is provided on the wall of the forming hole. The punch inserts a portion of the top plate into the forming hole, and the top plate abuts against the forming blade, so that the forming blade cuts off a portion of the top plate.

4. The stamping forming method for battery components according to claim 2, characterized in that, The provided support includes: The limiting protrusion has an annular inner sidewall, which surrounds to form a limiting opening. The limiting opening communicates with the forming hole, and the hole wall of the forming hole is connected to the annular inner sidewall and is flush with the annular inner sidewall.

5. The stamping forming method for battery components according to claim 1, characterized in that, The top surface is perpendicular to the first direction, the side surface is perpendicular to the second direction, the first direction is perpendicular to the second direction, the support has an arc-shaped surface, the axis of the arc-shaped surface is parallel to a third direction, the third direction is perpendicular to the first direction and the second direction, and the arc-shaped surface connects the side surface and the top surface.

6. The stamping forming method for battery components according to claim 5, characterized in that, The provided support includes: A slip limiting component is provided, the slip limiting component having a slip limiting arc surface, a first slip limiting surface and a second slip limiting surface, the first slip limiting surface being perpendicular to a first direction, and the second slip limiting surface being perpendicular to a second direction. The slip limiting component is installed on the support member so that the first slip limiting surface and the top surface press the top plate together from opposite sides, and the second slip limiting surface and the side surface press the side plate together from opposite sides. The battery component is pressed together by the slip limiting arc surface so that a portion of the battery component fits against the arc surface.

7. The stamping forming method for battery components according to claim 6, characterized in that, The provided support includes: Two slip limiting members are provided and mounted on the support member at a distance along the third direction, such that the forming hole is opposite to the distance between the two slip limiting members.

8. The stamping forming method for battery components according to claim 4, characterized in that, The side of the limiting protrusion away from the inner annular wall forms an outer annular wall, which is connected to the top surface and smoothly transitions with the top surface.

9. The stamping forming method for battery components according to claim 1, characterized in that, The limiting slip boss has a straight portion and an arc-shaped portion. The axis of the forming hole is parallel to a first direction, the side is perpendicular to a second direction, the first direction is perpendicular to the second direction, the arc-shaped portion extends circumferentially along an axis parallel to the first direction, the straight portion extends along a third direction, the third direction is perpendicular to the first direction and the second direction, and one end of the straight portion is connected to the arc-shaped portion.

10. The stamping forming method for battery components according to claim 1, characterized in that, The provided punch includes: The punch has a contact surface parallel to the top surface. A stamping protrusion is formed on the contact surface, and a receiving groove is provided on the contact surface. A portion of the top plate is punched into the forming hole through the stamping protrusion, and a portion of the battery component is pressed into the receiving groove through the limiting slip boss. The battery component is pressed together from opposite sides by the contact surface and the top surface.

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