Automatic laminating tool for welding battery top cover

Abstract

The utility model relates to an automatic fitting tool for welding a battery top cover, comprising: a strip-shaped pressing block, the strip-shaped pressing block is provided with a plurality of guide chutes, the plurality of guide chutes are arranged at intervals along the length direction of the strip-shaped pressing block, and the notches of the plurality of guide chutes all face the same side of the strip-shaped pressing block; and the floating pressing block comprises a plurality of pressing blocks which are connected into the guide sliding grooves in a sliding mode respectively, and elastic pieces which are located in the guide sliding grooves and drive the pressing blocks to slide towards the groove openings are arranged at the ends, close to the groove openings, of the pressing blocks. According to the invention, the strip-shaped pressing block is utilized to synchronously drive the extrusion surfaces of the plurality of pressing blocks to extrude the battery shell, so that the battery shell is attached to the battery top cover. When a gap exists between the battery shell and the battery top cover, the elastic piece is arranged in the guide sliding groove and drives the pressing block to slide towards the groove opening direction to play a role in compensating the gap, the pressing block continues to move forwards to extrude the battery shell, the battery shell and the battery top cover are automatically attached, the welding gap is eliminated, and the welding quality is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery top cover welding, and in particular to an automatic laminating tool for welding battery top covers. Background Art

[0002] The secondary battery includes a battery shell and a top cover. The top cover is embedded in the upper top opening of the battery shell. The edges around the top cover are welded to the inner wall of the upper top opening, thereby encapsulating the battery core material in the battery shell.

[0003] When the welding equipment welds the top cover and the battery shell, the pressure strip of the welding equipment abuts against the outer wall of the top of the battery shell, so that the inner wall of the top of the battery shell and the edge of the top cover are tightly abutted, which is conducive to the welding equipment to weld the top cover and the battery shell.

[0004] When the battery shell is not positioned accurately or the pressure strip is not installed accurately, the pressing surface of the pressure strip and the outer wall of the battery shell cannot fit together, resulting in uneven pressure between the pressure strip and the battery shell, making it difficult to tightly support the edge of the battery shell and the top cover. There is a large gap at the welding position, which leads to the risk of light leakage during welding. Utility Model Content

[0005] The embodiment of the present application provides an automatic bonding tool for welding a battery top cover to solve the problem in the related art that the edges of the battery shell and the top cover are difficult to tightly abut against each other, the gap at the welding position is large, and there is a risk of light leakage during welding.

[0006] The embodiment of the present application provides an automatic lamination tool for welding a battery top cover, comprising:

[0007] A strip-shaped pressing block, wherein a plurality of guide slots are provided on the strip-shaped pressing block, wherein the plurality of guide slots are spaced apart along the length direction of the strip-shaped pressing block, and the notches of the plurality of guide slots are all oriented toward the same side of the strip-shaped pressing block;

[0008] The floating pressure block includes a plurality of pressure blocks respectively slidably connected to each of the guide slots, an extrusion surface is provided at one end of the pressure block close to the slot, and an elastic member is located in the guide slot and drives the pressure block to slide toward the slot.

[0009] In some embodiments: the guide groove includes a limiting groove and a guide groove that are interconnected, and the pressing block includes a stopping block slidably connected to the limiting groove, and a pressing head slidably connected to the guide groove.

[0010] In some embodiments: the limiting groove and the guide groove pass through the upper surface and the lower surface of the strip-shaped pressing block, the limiting groove and the guide groove together form a "T"-shaped structure, and the stop block and the pressure head are interconnected to form a "T"-shaped structure.

[0011] In some embodiments: the pressure head partially extends out of the guide groove, the extrusion surface is located on the pressure head and at the end away from the stop block, and the end of the pressure head away from the stop block is provided with an arc-shaped groove running through the upper and lower surfaces of the pressure head.

[0012] In some embodiments: the elastic member is a compression coil spring, the stop block is provided with a first countersunk hole for positioning one end of the elastic member at one end away from the pressure head, and the side wall of the limiting groove away from the guide groove is provided with a second countersunk hole for positioning the other end of the elastic member.

[0013] In some embodiments: auxiliary top blocks are provided on one side of the strip-shaped pressing block close to the notch and located on both sides of the notch, and the auxiliary top blocks protrude from the side surfaces of the strip-shaped pressing block.

[0014] In some embodiments, the strip-shaped pressing block is a long strip structure with a rectangular cross section, and a plurality of stepped holes arranged at intervals are opened on the strip-shaped pressing block.

[0015] In some embodiments, a driving mechanism for driving the strip-shaped pressing block to move back and forth is connected to the strip-shaped pressing block, and the driving mechanism is fixedly connected to the strip-shaped pressing block by passing a bolt through the stepped hole.

[0016] In some embodiments: the driving mechanism is any one of a pneumatic cylinder, an electric cylinder, and a linear module.

[0017] In some embodiments, the bar-shaped pressing block is made of aluminum alloy or stainless steel, and the pressing block is made of engineering plastic or copper.

[0018] The beneficial effects of the technical solution provided by this application include:

[0019] An embodiment of the present application provides an automatic bonding tool for welding battery top covers. Since the automatic bonding tool of the present application is provided with a strip pressure block, a plurality of guide slots are provided on the strip pressure block, and the plurality of guide slots are arranged at intervals along the length direction of the strip pressure block, and the slots of the plurality of guide slots are all facing the same side of the strip pressure block; a floating pressure block, the floating pressure block includes a plurality of pressure blocks respectively slidably connected in each guide slot, an extrusion surface is provided at one end of the pressure block close to the slot, and an elastic member is located in the guide slot and drives the pressure block to slide toward the slot.

[0020] Therefore, when the automatic fitting device of the present application squeezes the top opening of the battery shell, it uses the strip-shaped pressing block to synchronously drive the extrusion surfaces of multiple pressing blocks to squeeze the battery shell, so that the battery shell and the battery top cover fit together. When there is a gap between the battery shell and the battery top cover, the elastic member drives the pressing block in the guide groove to slide toward the notch to compensate for the gap, allowing the pressing block to continue to move forward and squeeze the battery shell. After the elastic member contracts, the pressing block presses the battery shell tightly, allowing the battery shell and the battery top cover to automatically fit together, eliminating the welding gap and improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 This is a schematic structural diagram of an embodiment of the present application;

[0023] Figure 2 This is an exploded diagram of the structure of an embodiment of the present application.

[0024] Reference numerals:

[0025] 10. Bar-shaped pressing block; 11. Guide chute; 12. Limiting groove; 13. Guide groove; 14. Auxiliary top block; 15. Second countersunk hole; 16. Step hole;

[0026] 20. Floating pressure block; 21. Pressure block; 22. Extrusion surface; 23. Elastic member; 24. Stop block; 25. Pressure head; 26. Arc-shaped groove. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0028] The embodiment of the present application provides an automatic bonding tool for welding a battery top cover, which can solve the problems in the related art that the edges of the battery shell and the top cover are difficult to tightly abut against each other, the gap at the welding position is large, and there is a risk of light leakage during welding.

[0029] See also Figure 1 and Figure 2As shown, the embodiment of the present application provides an automatic lamination tool for welding a battery top cover, comprising:

[0030] The strip-shaped pressing block 10 is provided with a plurality of guide slots 11. The specific number of guide slots 11 is determined based on the battery housing size and welding requirements. This application uses three guide slots 11 as an example for illustration. The three guide slots 11 are spaced apart along the length of the strip-shaped pressing block 10, and the notches of the three guide slots 11 all face the same side of the strip-shaped pressing block 10.

[0031] The floating pressure block 20 includes three pressure blocks 21 respectively slidably connected to each guide slot 11. An extrusion surface 22 is provided at one end of the pressure block 21 close to the slot. The extrusion surface 22 protrudes from the slot of the guide slot 11 to the outer surface of the strip pressure block 10, and an elastic member 23 is located in the guide slot 11 and drives the pressure block 21 to slide toward the slot.

[0032] The pressure block 21 slides within the guide slot 11 and then moves telescopically on the strip pressure block 10. The extrusion surface 22 of the pressure block 21 is exposed on the outer surface of the strip pressure block 10 and is used to compress the battery casing, ensuring a precise fit between the inner wall of the battery casing and the edge of the battery cover. The elastic member 23 elastically supports the pressure block 21, allowing the pressure block 21 to have a certain amount of extrusion floating displacement on the strip pressure block 10.

[0033] When the automatic fitting tooling of the embodiment of the present application squeezes the top opening of the battery shell, it uses the bar-shaped pressing block 10 to synchronously drive the extrusion surfaces 22 of multiple pressing blocks 21 to synchronously squeeze the battery shell, so that the inner wall of the battery shell and the edge of the battery top cover are precisely fitted to each other, facilitating subsequent laser welding and preventing gaps from forming between the battery shell and the battery top cover.

[0034] When there's a gap between the battery housing and the battery cover, the elastic member 23, within the guide slot 11, drives the pressing block 21 toward the notch, compensating for the gap and allowing the pressing block 21 to continue moving forward and compressing the battery housing. The elastic member 23 contracts, allowing the pressing block 21 to press against the battery housing, automatically fitting the battery housing and battery cover together, eliminating the weld gap and improving weld quality.

[0035] In some alternative embodiments: See Figure 1 and Figure 2 As shown, the embodiment of the application provides an automatic lamination tool for welding battery top covers. The guide slot 11 of the automatic lamination tool includes a limit slot 12 and a guide slot 13 that are interconnected. The pressing block 21 includes a stop block 24 slidably connected to the limit slot 12 and a pressing head 25 slidably connected to the guide slot 13.

[0036] The guide groove 11 of the present application is composed of a limit groove 12 and a guide groove 13, and the pressure block 21 is composed of a stop block 24 and a pressure head 25, wherein the stop block 24 is located in the limit groove 12 to jointly control the telescopic stroke range of the pressure head 25, and the guide groove 13 is slidably connected to the pressure head 25 to provide guidance for the telescopic movement of the pressure head 25.

[0037] In some alternative embodiments: See Figure 1 and Figure 2 As shown, the embodiment of the application provides an automatic lamination tool for welding battery top covers. The limit groove 12 and guide groove 13 of the automatic lamination tool extend through the upper and lower surfaces of the strip-shaped pressing block. The limit groove 12 and guide groove 13 together form a "T"-shaped structure, and the stop block 24 and the pressing head 25 are connected to each other to form a "T"-shaped structure.

[0038] The pressing head 25 partially extends out of the guide groove 13. The extrusion surface 22 is located on the pressing head 25 at the end away from the stop block 24. The end of the pressing head 25 away from the stop block 24 is provided with an arc-shaped groove 26 extending through the upper and lower surfaces of the pressing head 25. The pressing head 25 extends out of the guide groove 13 to expose the extrusion surface 22 to the outside of the strip-shaped pressing block 10, thereby causing the extrusion surface 22 to squeeze the battery casing.

[0039] An arc-shaped groove 26 is provided on one end of the pressing head 25 close to the extrusion surface 22, which runs through the upper and lower surfaces of the pressing head 25. The arc-shaped groove 26 divides the extrusion surface 22 on the pressing head 25 into two equal parts, so as to increase the pressure between the extrusion surface 22 and the battery casing, thereby increasing the pressure and quickly eliminating the gap between the battery casing and the battery top cover.

[0040] The elastic member 23 is preferably, but not limited to, a compression coil spring. A first countersunk hole (not shown) is defined on the end of the stop block 24 away from the pressure head 25 to position one end of the elastic member 23. A second countersunk hole 15 is defined on the sidewall of the retaining groove 12 away from the guide groove 13 to position the other end of the elastic member 23. The ends of the compression coil spring are respectively located in the first countersunk hole and the second countersunk hole 15, preventing the compression coil spring from sliding out of the guide groove 11.

[0041] The limiting groove 12 and the guide groove 13 of the embodiment of the present application together form a "T"-shaped structure, the stop block 24 and the pressure head 25 are interconnected to form a "T"-shaped structure, and the compression coil spring is located on the central axis of the guide groove 11 and the pressure block 21, so that the pressure block 21 can extend and slide in the guide groove 11 along the length direction of the central axis.

[0042] In some alternative embodiments: See Figure 1 and Figure 2As shown, an embodiment of the application provides an automatic laminating tool for welding a battery top cover, wherein the strip pressing block 10 of the automatic laminating tool is provided with auxiliary top blocks 14 located on both sides of the notch on one side close to the notch, and the auxiliary top blocks 14 protrude from the side of the strip pressing block 10.

[0043] In the embodiment of the present application, auxiliary top blocks 14 are provided on both sides of the notch on the strip-shaped pressing block 10. The auxiliary top blocks 14 are used to squeeze the battery casing together with the extrusion surface 22 of the pressing block 21 and the auxiliary top blocks 14 when the pressing block 21 is fully retracted into the guide groove 11. The auxiliary top blocks 14 have a greater extrusion force than the extrusion surface 22 of the pressing block 21.

[0044] In some alternative embodiments: See Figure 1 and Figure 2 As shown, the embodiment of the application provides an automatic laminating tool for welding the battery top cover. The strip pressing block 10 of the automatic laminating tool is a long strip structure with a rectangular cross section. The strip pressing block 10 is provided with a plurality of stepped holes 16 arranged at intervals.

[0045] A drive mechanism (not shown) is connected to the strip-shaped pressing block 10 to drive its reciprocating linear motion. The drive mechanism is fixedly connected to the strip-shaped pressing block 10 via bolts inserted into stepped holes 16. The drive mechanism can be any of a pneumatic cylinder, an electric cylinder, or a linear module. The drive mechanism telescopes and drives the strip-shaped pressing block 10 toward or away from the battery housing, achieving compression and release.

[0046] The strip-shaped pressing block 10 of the present embodiment is made of aluminum alloy or stainless steel, which has high structural strength and stability. The pressing block 21 is preferably made of engineering plastic or copper. The hardness of the pressing block 21 made of engineering plastic is smaller than that of the battery shell and is not easy to scratch the battery shell. The pressing block made of copper has good thermal conductivity, which facilitates rapid cooling of the battery shell after welding.

[0047] How it works

[0048] The embodiment of the present application provides an automatic bonding tool for welding battery top covers. Since the automatic bonding tool of the present application is provided with a strip pressure block 10, a plurality of guide slots 11 are provided on the strip pressure block 10. The plurality of guide slots 11 are arranged at intervals along the length direction of the strip pressure block 10, and the slots of the plurality of guide slots 11 are all facing the same side of the strip pressure block 10; a floating pressure block 20, the floating pressure block 20 includes a plurality of pressure blocks 21 respectively slidably connected to each guide slot 11, an extrusion surface 22 is provided at one end of the pressure block 21 close to the slot, and an elastic member 23 is located in the guide slot 11 and drives the pressure block 21 to slide toward the slot.

[0049] Therefore, when the automatic fitting device of the present application squeezes the top opening of the battery shell, it uses the strip-shaped pressing block 10 to synchronously drive the extrusion surfaces 22 of multiple pressing blocks 21 to squeeze the battery shell, so that the battery shell and the battery top cover fit together. When there is a gap between the battery shell and the battery top cover, the elastic member 23 in the guide slot 11 drives the pressing block 21 to slide toward the slot to compensate for the gap, allowing the pressing block 21 to continue to move forward and squeeze the battery shell. After the elastic member 23 contracts, the pressing block 21 presses the battery shell tightly, allowing the battery shell and the battery top cover to automatically fit together, eliminating the welding gap and improving the welding quality.

[0050] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0051] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0052] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An automatic laminating tool for welding battery top cover, characterized in that: include: A strip-shaped pressing block (10), wherein a plurality of guide slots (11) are provided on the strip-shaped pressing block (10), the plurality of guide slots (11) are spaced apart along the length direction of the strip-shaped pressing block (10), and the notches of the plurality of guide slots (11) are all oriented toward the same side of the strip-shaped pressing block (10); A floating pressure block (20), the floating pressure block (20) includes a plurality of pressure blocks (21) respectively slidably connected in each of the guide slots (11), an extrusion surface (22) is provided at one end of the pressure block (21) close to the slot, and an elastic member (23) is located in the guide slot (11) and drives the pressure block (21) to slide toward the slot.

2. The automatic laminating tool for welding a battery top cover according to claim 1, characterized in that: The guide slot (11) comprises a limiting slot (12) and a guide slot (13) which are interconnected, and the pressing block (21) comprises a stop block (24) which is slidably connected in the limiting slot (12) and a pressing head (25) which is slidably connected in the guide slot (13).

3. The automatic laminating tool for welding a battery top cover according to claim 2, characterized in that: The limiting groove (12) and the guide groove (13) pass through the upper surface and the lower surface of the strip-shaped pressing block (10), and the limiting groove (12) and the guide groove (13) together form a "T"-shaped structure. The stop block (24) and the pressure head (25) are connected to each other to form a "T"-shaped structure.

4. The automatic laminating tool for welding a battery top cover according to claim 2, characterized in that: The pressure head (25) partially extends out of the guide groove (13), the extrusion surface (22) is located on the pressure head (25) and at an end away from the stop block (24), and an arc-shaped groove (26) is provided on the end of the pressure head (25) away from the stop block (24) and runs through the upper surface and the lower surface of the pressure head (25).

5. The automatic laminating tool for welding a battery top cover according to claim 2, characterized in that: The elastic member (23) is a compression coil spring, and a first countersunk hole for positioning one end of the elastic member (23) is provided on one end of the stop block (24) away from the pressure head (25), and a second countersunk hole (15) for positioning the other end of the elastic member (23) is provided on a side wall of the limiting groove (12) away from the guide groove (13).

6. The automatic laminating tool for welding a battery top cover according to claim 1, characterized in that: Auxiliary top blocks (14) are provided on one side of the strip-shaped pressing block (10) close to the notch and located on both sides of the notch. The auxiliary top blocks (14) protrude from the side surfaces of the strip-shaped pressing block (10).

7. The automatic laminating tool for welding a battery top cover according to claim 1, characterized in that: The strip-shaped pressing block (10) is a long strip structure with a rectangular cross section, and a plurality of stepped holes (16) arranged at intervals are provided on the strip-shaped pressing block (10).

8. The automatic laminating tool for welding a battery top cover according to claim 7, characterized in that: The strip-shaped pressing block (10) is connected to a driving mechanism for driving the strip-shaped pressing block to perform reciprocating linear motion. The driving mechanism is fixedly connected to the strip-shaped pressing block (10) by means of bolts passing through the stepped holes (16).

9. The automatic laminating tool for welding a battery top cover according to claim 8, characterized in that: The driving mechanism is any one of a pneumatic cylinder, an electric cylinder, and a linear module.

10. The automatic laminating tool for welding a battery top cover according to claim 1, characterized in that: The strip-shaped pressing block (10) is made of aluminum alloy or stainless steel, and the pressing block (21) is made of engineering plastic or copper.

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