Battery module side plate welding tool

Abstract

The utility model relates to a battery module side plate welding tool which comprises two side plate pressing plates which are parallel to each other and arranged in a spaced mode. Limiting protrusions are arranged on the faces, close to each other, of the middles of the two side plate pressing plates, and hollowed-out welding openings located in the two sides of the limiting protrusions are formed in the middles of the two side plate pressing plates. The pressing mechanism is connected with the two side plate pressing plates so as to drive the two side plate pressing plates to move in the direction close to each other or away from each other. The side plate pressing plate used for clamping the side plate and shaping the side plate is arranged, the limiting protrusion is arranged in the middle of the side plate pressing plate and used for limiting the middle end plate, follow-up laser welding is facilitated after the side plate and the middle end plate are mutually extruded and attached, and the welding quality is improved. The pressing mechanism drives the two side plate pressing plates to move in the direction close to each other or away from each other, automatic pressing and shaping actions and loosening actions are achieved, and the production takt is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery module manufacturing, and in particular to a battery module side panel welding tool. Background Art

[0002] The production and assembly process of battery modules involves the assembly and welding of battery cells, end plates, and side plates. Currently, during battery module production, some battery modules utilize laser welding of side and end plates to strengthen the bonding strength between cells and prevent cells from scattering within the battery module or battery pack, which could cause the battery module to malfunction. Some battery modules also incorporate an intermediate end plate in the middle of the module during structural design. However, welding the side and intermediate end plates together can create gaps, resulting in unsatisfactory welding results. Summary of the Invention

[0003] An embodiment of the present application provides a battery module side panel welding tool to solve the problem in the related art that gaps are more likely to be generated between the side panels and the middle end panels of the battery module during welding, resulting in unsatisfactory welding results.

[0004] The embodiment of the present application provides a battery module side panel welding tool, comprising:

[0005] Side plate pressing plates, wherein two side plate pressing plates are provided, and the two side plate pressing plates are parallel to each other and spaced apart;

[0006] A limiting protrusion is provided on the middle part of the two side plate pressure plates and on the side close to each other, and a hollow welding opening is opened on both sides of the limiting protrusion in the middle part of the two side plate pressure plates;

[0007] A clamping mechanism connects the two side plate pressure plates to drive the two side plate pressure plates to move in a direction of approaching or moving away from each other.

[0008] In some embodiments: a welding platform is also included, the two side plate pressure plates are slidably connected to the welding platform through slide rails, the clamping mechanism is fixed to the welding platform and drives the side plate pressure plates to reciprocate along the length direction of the slide rails.

[0009] In some embodiments: the clamping mechanism includes cylinders or electric cylinders respectively connected to the sides of the two side plate pressure plates away from each other, and the cylinders or electric cylinders connected to each side plate pressure plate are symmetrically arranged along the limiting protrusion.

[0010] In some embodiments: the welding platform is provided with positioning pins for positioning the end plates.

[0011] In some embodiments, the limiting protrusion is a long strip structure and extends in a vertical direction on the side plate pressure plate, and the end of the limiting protrusion away from the side plate pressure plate is an arc-shaped or conical structure.

[0012] In some embodiments: a side of the side plate pressure plate close to the limiting protrusion is provided with grooves located on both sides of the limiting protrusion, the grooves extend along the upper and lower ends of the side plate pressure plate, and one end of the hollow welding port is connected to the grooves.

[0013] In some embodiments: a middle pressure block is provided on both sides of the limiting protrusion, and a pressing surface for pressing the side plate is provided at one end of the middle pressure block away from the side plate pressure plate, and the pressing surface protrudes from the side plate pressure plate.

[0014] In some embodiments: the hollow welding port is formed by a rectangular hole, a long waist-shaped hole or a plurality of round holes, and a welding copper nozzle is connected to the hollow welding port.

[0015] In some embodiments: both ends of the side plate pressure plate are provided with end pressure blocks for pressing the end of the side plate, and the end of the end pressure block away from the side plate pressure plate is provided with a pressing surface for pressing the side plate, and the pressing surface protrudes from the side plate pressure plate.

[0016] In some embodiments: the side panel pressure plate is an aluminum alloy plate of a set thickness, the interior of the side panel pressure plate is a hollow structure, and reinforcing ribs are provided inside the side panel pressure plate.

[0017] The beneficial effects of the technical solution provided by this application include:

[0018] An embodiment of the present application provides a battery module side panel welding tool. Since the battery module side panel welding tool of the present application is provided with a side panel pressure plate, there are two side panel pressure plates, which are parallel to each other and spaced apart; the middle parts of the two side panel pressure plates and the sides close to each other are provided with limiting protrusions, and the middle parts of the two side panel pressure plates are provided with hollow welding openings located on both sides of the limiting protrusions; a clamping mechanism connects the two side panel pressure plates to drive the two side panel pressure plates to move in a direction of approaching or moving away from each other.

[0019] Therefore, the battery module side panel welding fixture of the present application is equipped with two side panel pressure plates for clamping and shaping the side panels. A limiting protrusion is provided in the middle of the side panel pressure plate. This limiting protrusion not only limits the position of the middle end panel, but also facilitates subsequent laser welding after squeezing and fitting the side panels and middle end panels together, thereby improving welding quality. Both side panel pressure plates are connected to a clamping mechanism that drives the two side panel pressure plates to move toward or away from each other, realizing automatic clamping, shaping, and releasing actions, thereby improving production cycle time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 This is a schematic diagram of a battery module side panel welding fixture clamping a battery module according to an embodiment of the present application;

[0022] Figure 2 This is a structural front view of the side plate pressure plate of an embodiment of the present application;

[0023] Figure 3 This is a top view of the structure of the side plate pressure plate of an embodiment of the present application;

[0024] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0025] Figure 5 This is a partial schematic diagram of the battery module side panel welding tool and the battery module according to an embodiment of the present application.

[0026] Reference numerals:

[0027] 1. Side panel pressure plate; 2. Clamping mechanism; 3. Battery module; 11. Limiting protrusion; 12. Hollow welding port; 13. Groove; 14. Middle pressure block; 31. Side panel; 32. Middle end plate; 33. Battery. DETAILED DESCRIPTION

[0028] 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.

[0029] An embodiment of the present application provides a battery module side panel welding tool, which can solve the problem in the related art that gaps are more likely to be generated between the side panels and the middle end panels of the battery module during welding, resulting in unsatisfactory welding results.

[0030] See also Figures 1 to 5 As shown, the embodiment of the present application provides a battery module side panel welding tool, including:

[0031] The side panel pressing plate 1 is a metal plate of set thickness. The cross section of the side panel pressing plate 1 is a rectangular structure. There are two side panel pressing plates 1. The two side panel pressing plates 1 are parallel to each other and spaced apart.

[0032] A limiting protrusion 11 is provided on the middle part of the two side plate pressure plates 1 and on the side close to each other. The limiting protrusion 11 protrudes from the surface of the side plate pressure plates 1, and a hollow welding opening 12 is opened on both sides of the limiting protrusion 11 in the middle part of the two side plate pressure plates 1.

[0033] The clamping mechanism 2 connects the two side plate pressure plates 1 and is used to drive the two side plate pressure plates 1 to move toward or away from each other, thereby driving the side plate 31 of the battery module 3 to move toward the middle end plate 32.

[0034] When in use, the clamping mechanism 2 of the embodiment of the present application first drives the two side plate pressure plates 1 to move away from each other so that an assembly welding space for accommodating the battery module 3 is formed between the two side plate pressure plates 1, and then the battery 33, the middle end plate 32, the end end plate and the side plate 31 are spliced ​​together.

[0035] Then the clamping mechanism 2 drives the two side plate pressure plates 1 to move in a direction approaching each other, so that the two side plate pressure plates 1 squeeze the side plate 31 and move it toward the direction approaching the middle end plate 32 and the end end plate, and the side plate 31 is precisely fitted with the overlap of the middle end plate 32 and the end end plate respectively, and the limiting protrusion 11 also positions the middle end plate 32.

[0036] Finally, the welding head of the laser welding equipment is inserted into the hollow welding port 12 to weld the middle end plate 32 to the side plate 31, and the side plate 31 to the end end plate. After welding is completed, the clamping mechanism 2 drives the two side plate pressure plates 1 to move away from each other to release the battery module 3.

[0037] The two side panel pressure plates 1 of the embodiment of the present application are used to clamp the side panel 31 and shape the side panel 31. A limiting protrusion 11 is provided in the middle of the side panel pressure plate 1. The limiting protrusion 11 is not only used to limit the middle end plate 32, but also facilitates subsequent laser welding after the side panel 31 and the middle end plate 32 are squeezed and fitted together, thereby improving the welding quality.

[0038] Both side plate pressing plates 1 are connected to a clamping mechanism 2, which drives the two side plate pressing plates 1 to move towards or away from each other, thereby realizing automatic clamping, shaping and releasing actions of the two side plate pressing plates 1, thereby improving the production rhythm.

[0039] In some alternative embodiments: See Figures 1 to 5As shown, an embodiment of the present application provides a battery module side panel welding tool, which also includes a welding platform (not shown in the figure), and the two side panel pressure plates 1 are slidably connected to the welding platform through a slide rail (not shown in the figure), and the clamping mechanism 2 is fixed on the welding platform and drives the side panel pressure plate 1 to reciprocate along the length direction of the slide rail.

[0040] The clamping mechanism 2 includes cylinders or electric cylinders respectively connected to the sides of the two side plate pressure plates 1 away from each other. The cylinders or electric cylinders connected to each side plate pressure plate 1 are symmetrically arranged along the limiting protrusion 11. The cylinders or electric cylinders connected to each side plate pressure plate 1 move synchronously with the extension and contraction movements, thereby driving the side plate pressure plate 1 to tighten or release the side plate 31.

[0041] The welding platform is provided with positioning pins (not shown) for positioning the end plates. The positioning pins are used to position the end plates at both ends of the battery module 3. The middle end plate 32 is located in the middle of the battery module 3, and the side plates 31 are located on both sides of the battery module 3. The side plates 31, the middle end plate 32, and the end end plates together form a space for fixing the batteries 33.

[0042] In some alternative embodiments: See Figures 1 to 5 As shown, the present invention provides a battery module side panel welding tool. The tool's limiting protrusion 11 is an elongated strip extending vertically from the side panel pressure plate 1. The end of the limiting protrusion 11 away from the side panel pressure plate 1 is an arc-shaped or conical structure. The hollow welding opening 12 is formed by a rectangular hole, a long waist-shaped hole, or multiple circular holes. A welding copper nozzle is connected to the hollow welding opening 12 to provide shielding gas for laser welding.

[0043] The side plate pressure plate 1 is provided with grooves 13 on both sides of the limiting protrusion 11 on one side thereof, and the grooves 13 extend along the upper and lower ends of the side plate pressure plate 1. One end of the hollow welding opening 12 is connected to the grooves 13. A middle pressure block 14 is provided on both sides of the limiting protrusion 11. The end of the middle pressure block 14 away from the side plate pressure plate 1 is provided with a pressing surface for pressing the side plate 31, and the pressing surface protrudes from the side plate pressure plate 1.

[0044] In this embodiment of the present application, grooves 13 are provided on either side of the limiting protrusion 11 to serve as welding areas. The limiting protrusion 11 is located on the axis of symmetry of the side plate pressure plate 1. The limiting protrusion 11 is used to position the central end plate 32 in the center of the entire battery module 3. Through the coordinated clamping action of the pneumatic or electric cylinder, the limiting protrusion 11 presses against the two side plates 31 on either side of the battery module 3, avoiding the problem of insufficient weld strength caused by an excessively large welding gap between the side plates 31 and the central end plate 32.

[0045] In some alternative embodiments: See Figures 1 to 5As shown, an embodiment of the present application provides a battery module side panel welding tool, both ends of the side panel pressure plate 1 of the tool are provided with end pressure blocks (not shown in the figure) for pressing the end of the side panel 31, and the end of the end pressure block away from the side panel pressure plate 1 is provided with a pressing surface for pressing the side panel 31, and the pressing surface protrudes from the side panel pressure plate 1.

[0046] The side panel pressure plate 1 is an aluminum alloy plate of a predetermined thickness. It is hollow and features reinforcing ribs (not shown). Extruded from a hollow aluminum alloy profile, it boasts a smooth surface, light weight, and ease of machining. The stopper protrusions 11 and the end pressure blocks are connected to the side panel pressure plate 1 by welding or screws.

[0047] How it works

[0048] An embodiment of the present application provides a battery module side panel welding tool. Since the battery module side panel welding tool of the present application is provided with a side panel pressure plate 1, there are two side panel pressure plates 1, and the two side panel pressure plates 1 are parallel to each other and spaced apart; the middle parts of the two side panel pressure plates 1 and the sides close to each other are provided with limiting protrusions 11, and the middle parts of the two side panel pressure plates 1 are provided with hollow welding openings 12 located on both sides of the limiting protrusions 11; a clamping mechanism 2, which connects the two side panel pressure plates 1 to drive the two side panel pressure plates 1 to move in a direction of approaching or moving away from each other.

[0049] Therefore, the battery module side panel welding fixture of the present application is equipped with two side panel pressure plates 1 for clamping and shaping the side panels 31. A limiting protrusion 11 is provided in the middle of the side panel pressure plate 1. This limiting protrusion 11 is not only used to limit the middle end panel 32, but also facilitates subsequent laser welding after the side panels 31 and the middle end panel 32 are squeezed and fitted together, thereby improving welding quality. Both side panel pressure plates 1 are connected to a clamping mechanism 2, which drives the two side panel pressure plates 1 to move toward or away from each other, realizing automatic clamping, shaping, and releasing actions, thereby improving production cycle time.

[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. A battery module side panel welding tool, characterized in that: include: A side plate pressing plate (1), wherein two side plate pressing plates (1) are provided, and the two side plate pressing plates (1) are parallel to each other and spaced apart; A limiting protrusion (11) is provided on the middle part of the two side plate pressure plates (1) and on one side close to each other, and a hollow welding opening (12) is opened on both sides of the limiting protrusion (11) in the middle part of the two side plate pressure plates (1); A clamping mechanism (2) is provided, wherein the clamping mechanism (2) is connected to the two side plate pressing plates (1) to drive the two side plate pressing plates (1) to move in a direction of approaching or moving away from each other.

2. The battery module side panel welding tool according to claim 1, characterized in that: It also includes a welding platform, wherein the two side plate pressure plates (1) are slidably connected to the welding platform via a slide rail, and the clamping mechanism (2) is fixed on the welding platform and drives the side plate pressure plates (1) to reciprocate along the length direction of the slide rail.

3. A battery module side panel welding tool as claimed in claim 1 or 2, characterized in that: The clamping mechanism (2) includes cylinders or electric cylinders respectively connected to the sides of the two side plate pressure plates (1) that are away from each other, and the cylinders or electric cylinders connected to each side plate pressure plate (1) are symmetrically arranged along the limiting protrusion (11).

4. The battery module side panel welding tool according to claim 1, characterized in that: The welding platform is provided with positioning pins for positioning the end plates.

5. The battery module side panel welding tool according to claim 1, characterized in that: The limiting protrusion (11) is a long strip structure and extends in a vertical direction on the side plate pressure plate (1); the end of the limiting protrusion (11) away from the side plate pressure plate (1) is an arc-shaped or conical structure.

6. A battery module side panel welding tool as claimed in claim 1 or 5, characterized in that: A side of the side plate pressure plate (1) close to the limiting protrusion (11) is provided with grooves (13) located on both sides of the limiting protrusion (11), and the grooves (13) extend along the upper and lower ends of the side plate pressure plate (1), and one end of the hollow welding port (12) is connected to the groove (13).

7. The battery module side panel welding tool according to claim 6, characterized in that: A middle pressure block (14) is provided on both sides of the limiting protrusion (11), and a pressing surface for pressing the side plate (31) is provided at one end of the middle pressure block (14) away from the side plate pressure plate (1), and the pressing surface protrudes from the side plate pressure plate (1).

8. The battery module side panel welding tool according to claim 1, characterized in that: The hollow welding opening (12) is formed by a rectangular hole, a long waist-shaped hole or a plurality of circular holes, and a welding copper nozzle is connected to the hollow welding opening (12).

9. The battery module side panel welding tool according to claim 1, characterized in that: Both ends of the side plate pressure plate (1) are provided with end pressure blocks for pressing the end of the side plate (31), and the end of the end pressure block away from the side plate pressure plate (1) is provided with a pressing surface for pressing the side plate (31), and the pressing surface protrudes from the side plate pressure plate (1).

10. The battery module side panel welding tool according to claim 1, characterized in that: The side plate pressing plate (1) is an aluminum alloy plate of a set thickness, the interior of the side plate pressing plate is a hollow structure, and reinforcing ribs are provided inside the side plate pressing plate (1).

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