Welding jig and battery welding equipment

Abstract

The utility model relates to the technical field of welding equipment, in particular to a welding jig and battery welding equipment, the welding jig comprises a mounting structure, a supporting device and a pressing plate device; the supporting device is movably connected to the mounting structure in the first direction and / or the second direction so that the boundary dimension value of the supporting device in the first direction and / or the second direction can be increased or decreased. And the pressing plate device is arranged on the peripheral side of the supporting device, the pressing plate device and the supporting device are arranged in a spaced mode to form a containing space used for clamping the shell, and a welding part used for welding the shell is formed on the pressing plate device. According to the welding jig, the supporting device is arranged to be matched with the pressing plate device, the welding jig can be clamped on the inner side and the outer side of the shell and can be adjusted according to the size of the shell so as to be compatible with shells of different sizes, the overall structure is compact, and use is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a welding jig and battery welding equipment. Background Art

[0002] In the field of power battery processing technology, stainless steel shell welding equipment is used to weld the various components of the shell. Traditional welding equipment usually uses a fixed rotating fixture to complete the double-side edge welding of the shell. However, when replacing products of different models and sizes, new fixtures need to be made, which brings about the problem of high costs.

[0003] Therefore, it is necessary to make improvements to the above problems in order to change the current situation. Utility Model Content

[0004] The utility model provides a welding jig and a battery welding device, which are used to solve the problem that in the existing power battery shell welding process, the welding device is inconvenient to fix shells of different models.

[0005] The utility model provides a welding jig, comprising:

[0006] Mounting structure;

[0007] A supporting device, wherein the supporting device is movably connected to the mounting structure along a first direction and / or a second direction so that an outer dimension value of the supporting device in the first direction and / or the second direction increases or decreases; and

[0008] The pressing plate device is arranged on the peripheral side of the supporting device, and the pressing plate device and the supporting device are spaced apart to form a placement space for clamping the shell, and the pressing plate device is formed with a welding part for welding the shell.

[0009] According to an embodiment of the utility model, the welding jig further comprises a moving device, the moving device is connected to the mounting structure, the moving device is drivingly connected to the supporting device, and is used to drive the supporting device to move along the first direction and / or the second direction.

[0010] According to one embodiment of the utility model, the supporting device includes a first supporting plate and a second supporting plate, the first supporting plate is connected to the moving device, the second supporting plate is connected to the mounting structure, and the moving device drives the first supporting plate to approach or move away from the second supporting plate along the second direction.

[0011] According to an embodiment of the present utility model, the moving device includes a moving driving member and a fixed plate, the moving driving member is respectively connected to the fixed plate and the mounting structure, and the first supporting plate is connected to the fixed plate.

[0012] According to one embodiment of the utility model, the support device also includes a first adjustment component and a second adjustment component, the first adjustment component is respectively connected to the first support plate and the fixed plate, the second adjustment component is respectively connected to the second support plate and the mounting structure, the first adjustment component is used to drive the first support plate to approach or move away from the pressure plate device along the first direction, and the second adjustment component is used to drive the second support plate to approach or move away from the pressure plate device along the first direction.

[0013] According to one embodiment of the utility model, the first adjustment component includes a first adjustment platform and a first mounting frame, the first adjustment platform is respectively connected to the fixed plate and the first mounting frame, the first support plate is connected to the first mounting frame, and the first support plate is movably connected to the fixed plate through the first adjustment platform; the second adjustment component includes a second adjustment platform and a second mounting frame, the second adjustment platform is respectively connected to the mounting structure and the second mounting frame, the second support plate is connected to the second mounting frame, and the second support plate is movably connected to the mounting structure through the second adjustment platform.

[0014] According to one embodiment of the utility model, the welding jig also includes an air blowing structure, the supporting device is provided with a slot, the slot is provided on the side of the first supporting plate facing the first pressure plate assembly, and the welding portion is provided corresponding to the slot, the slot and the welding portion are respectively located on opposite sides of the shell, and the air blowing structure is connected to the slot and / or the welding portion.

[0015] According to one embodiment of the utility model, the pressure plate device includes a first pressure plate assembly and a second pressure plate assembly, the first pressure plate assembly and the second pressure plate assembly are arranged on the outside of the supporting device, and the first pressure plate assembly and the second pressure plate assembly are used to be crimped on opposite sides of the shell; the first pressure plate assembly is formed with the welding portion, and the welding portion is located on the side of the shell away from the supporting device.

[0016] According to an embodiment of the utility model, the first pressing plate assembly includes an outer pressing plate and a first pressing plate cylinder, the first pressing plate cylinder is connected to the outer pressing plate and is used to drive the outer pressing plate to move toward or away from the supporting device along a first direction; the second pressing plate assembly includes a side pressing plate and a second pressing plate cylinder, the second pressing plate cylinder is used to drive the side pressing plate to move toward or away from the supporting device along a second direction, wherein the first direction is perpendicular to the second direction;

[0017] And / or, the second pressure plate assembly also includes a guide member, a guide shaft and a buffer member, the guide shaft slidingly cooperates with the guide member, the guide member is connected to the mounting structure, the buffer member is arranged on the guide shaft, and the two ends of the buffer member are respectively connected to the side pressure plate and the second pressure plate cylinder.

[0018] The utility model also provides a battery welding device, comprising:

[0019] A welding jig as described in any one of the above items, wherein the welding jig is used to be fixed to the shell;

[0020] A welding device, used for welding the shell; and

[0021] The rotating device is connected to the welding fixture and is used to drive the welding fixture to rotate.

[0022] Implementing the embodiments of the utility model has the following beneficial effects:

[0023] In the welding jig of this embodiment, by setting a supporting device and cooperating with a pressure plate device, it can be clamped on the inner and outer sides of the shell, and can be adjusted according to the size of the shell to be compatible with shells of different sizes. The overall structure is compact and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] in:

[0026] Figure 1 It is a three-dimensional view of a welding jig in an embodiment of the utility model;

[0027] Figure 2 It is a structural schematic diagram of a welding jig in an embodiment of the utility model;

[0028] Figure 3 It is a partial structural schematic diagram of a welding jig in an embodiment of the utility model;

[0029] Reference numerals:

[0030] 10. Welding fixture; 100. Mounting structure; 110. Mounting side plate; 111. First adjustment slot; 120. Bottom plate; 200. Moving device; 210. Moving drive member; 220. Fixing plate; 221. Second adjustment slot; 300. Support device; 310. First support plate; 311. Air hole; 312. Notch; 320. Second support plate; 321. Avoidance slot; 330. Blowing structure; 340. First adjustment assembly; 341. An adjusting platform; 342, a first mounting frame; 350, a second adjusting assembly; 351, a second adjusting platform; 352, a second mounting frame; 400, a pressure plate device; 410, a first pressure plate assembly; 411, an outer pressure plate; 4111, a welding portion; 412, a first pressure plate cylinder; 420, a second pressure plate assembly; 421, a side pressure plate; 422, a second pressure plate cylinder; 423, a guide member; 424, a guide shaft; 425, a buffer member; 20, a shell. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figures 1 to 3 As shown, an embodiment of the utility model provides a welding jig 10, which includes a mounting structure 100, a supporting device 300 and a pressure plate device 400; the mounting structure 100 is used as a mounting carrier for connecting with an external component; the supporting device 300 is movably connected to the mounting structure 100 along a first direction or a second direction so that the outer dimension value of the supporting device 300 in the first direction and / or the second direction increases or decreases; the pressure plate device 400 is arranged on the peripheral side of the supporting device 300, and the pressure plate device 400 is spaced apart from the supporting device 300 to form a placement space for clamping the shell 20, and the pressure plate device 400 is also formed with a welding portion for welding the shell 20.

[0033] When using the welding jig 10 of this embodiment, the support device 300 cooperates with the pressure plate device 400, the support device 300 can be supported on the inner side of the shell 20, and the pressure plate device 400 can be crimped on the outer side of the shell 20, so that the shell 20 can be clamped and fixed inside and outside to reduce the deformation of the thin-walled structure of the shell 20 during the welding process, which is beneficial to improve the welding quality.

[0034] In the welding jig 10 of this embodiment, by setting the support device 300 and the pressure plate device 400 together, it can be clamped on the inner and outer sides of the shell 20, and can be adjusted according to the size of the shell 20 to be compatible with shells 20 of different sizes. The overall structure is compact and easy to use; at the same time, after welding is completed, the outer dimensions of the support device 300 can also be reduced to facilitate the removal of the welded shell 20 and reduce the wear between the shell 20 and the support device 30. It should be noted that for the convenience of description, refer to Figure 2 As shown, the X direction in the figure is defined as the first direction, and the Y direction is defined as the second direction.

[0035] Furthermore, the welding fixture 10 also includes a moving device 200, which is connected to the mounting structure 100. The moving device 200 is drivingly connected to the supporting device 300 to drive the supporting device 300 to move along the first direction and / or the second direction.

[0036] With this arrangement, the mobile device 200 can drive the support device 300 to move relative to the pressure plate device 400. On the one hand, the mobile device 200 can realize the automatic clamping and releasing function of the welding jig 10, that is, when the shell 20 has not moved into the placement space, the mobile device 200 drives the support 300 to move away from the pressure plate device 400, so as to move the shell 20 into the placement space; after the shell 20 moves into the placement space, the mobile device 200 drives the support device 300 to move closer to the pressure plate device 400 until the support device 300 cooperates with the pressure plate device 400 to press and fix the shell 20. In another embodiment, the mobile device 200 can adjust the distance between the support device 300 and the pressure plate device 400, so that the welding jig 10 can be suitable for clamping shells 200 of different thicknesses.

[0037] In one embodiment, the support device 300 includes a first support plate 310 and a second support plate 320, the first support plate 310 is connected to the mobile device 200, the second support plate 320 is connected to the mounting structure 100, and the mobile device 200 drives the first support plate 310 to approach or move away from the second support plate 320 along the second direction.

[0038] In this embodiment, the first support plate 310 and the second support plate 320 can be respectively supported on opposite or adjacent sides of the shell 20, and the adjustment function of the welding fixture 10 can be realized by driving the first support plate 310 to move through the moving device 200.

[0039] Specifically, the mobile device 200 includes a mobile driving member 210 and a fixed plate 220 . The mobile driving member 210 is connected to the fixed plate 220 and the mounting structure 100 , respectively. The first support plate 310 is connected to the fixed plate 220 .

[0040] When the welding jig 10 of this embodiment is used, the mobile driving member 210 is started to drive the fixed plate 220 to drive the first support plate 310 to move relative to the second support plate 320. At this time, the housing 20 is sleeved on the first support plate 310 and the second support plate 320. By adjusting the relative position between the first support plate 310 and the second support plate 320, the welding jig 10 can be adapted to housings 20 of different specifications. Specifically, the mobile driving member 210 can be a linear motor or a linear slide.

[0041] In one embodiment, the mounting structure 100 includes a mounting side plate 110 and a bottom plate 120 , wherein the bottom plate 120 is connected to the mounting side plate 110 and combined to form an L-shaped structure. At this time, the mounting side plate 110 can be used to connect with an external component, and the bottom plate 120 is used to fix the second support plate 320 .

[0042] In one embodiment, the support device 300 also includes a first adjustment component 340 and a second adjustment component 350, the first adjustment component 340 is respectively connected to the first support plate 310 and the fixed plate 220, the second adjustment component 350 is respectively connected to the second support plate 320 and the mounting structure 100, the first adjustment component 340 is used to drive the first support plate 310 to approach or move away from the pressure plate device 400 along the first direction, and the second adjustment component 350 is used to drive the second support plate 320 to approach or move away from the pressure plate device along the first direction.

[0043] By setting the first adjustment component 340 and the second adjustment component 350 to cooperate with the first support plate 310 and the second support plate 320 respectively, the position of the first support plate 310 and the second support plate 320 relative to the mounting structure 100 can be adjusted so that the support device 300 can adapt to the shell 20 of different length sizes; the mobile device 200 adjusts the position between the first support plate 310 and the second support plate 320 so that the support device 300 can adapt to the shell 20 of different width sizes. With this arrangement, the welding jig 10 can be used to quickly position shells 20 of different specifications, and the structure is simple and easy to use.

[0044] Specifically, the first adjustment component 340 includes a first adjustment platform 341 and a first mounting frame 342, the first adjustment platform 341 is respectively connected to the fixed plate 220 and the first mounting frame 342, the first support plate 310 is connected to the first mounting frame 342, and the first support plate 310 is movably connected to the fixed plate 220 through the first adjustment platform 341; the second adjustment component 350 includes a second adjustment platform 351 and a second mounting frame 352, the second adjustment platform 351 is respectively connected to the mounting structure 100 and the second mounting frame 352, the second support plate 320 is connected to the second mounting frame 352, and the second support plate 320 is movably connected to the mounting structure 100 through the second adjustment platform 351; the mounting structure 100 is provided with a first adjustment slot 111, and the fixed plate 220 is provided with a second adjustment slot 221 arranged parallel to the first adjustment slot 111, and the second adjustment slot 221 is parallel to the moving direction of the second support plate 320.

[0045] In this embodiment, the first mounting frame 342 can be driven to move relative to the mounting structure 100 by operating the first adjustment platform 341 to adjust the position of the first support plate 310. After the first mounting frame 342 moves to the preset position, the first mounting frame 342 can be connected to the second adjustment slot 221 by fasteners such as bolts to fix the first mounting frame 342 and the fixed plate 220; similarly, the second mounting frame 352 can also be positioned with the mounting structure 100 through the first adjustment slot 111. In a preferred embodiment, the first pressing plate assembly 410 and the second pressing plate assembly 420 in one set of pressing plate devices 400 are also arranged on the first mounting frame 342, and when the first mounting frame 342 moves relative to the fixed plate 220, the pressing plate device 400 can be driven to move together; of course, another set of pressing plate devices 400 can be arranged on the second mounting frame 352, so that the second adjustment platform 351 can drive and realize the adjustment function. Specifically, the first adjustment platform 341 and the second adjustment platform 351 can be manual slides.

[0046] Specifically, the welding jig 10 also includes an air blowing structure 330, the second support plate 320 is provided with an air hole 311 and a slot 312, the air blowing structure 330 is connected to the air hole 311, the slot 312 is arranged on the side of the first support plate 310 facing the first pressure plate assembly 410, and the welding portion 4111 is arranged corresponding to the slot 312, the slot 312 and the welding portion 4111 are respectively located on opposite sides of the shell 20, and the air blowing structure 330 is used to deliver protective gas toward the welding portion 4111.

[0047] In this embodiment, the notch 312 and the welding portion 4111 correspond to the opposite sides of the part to be welded of the shell 20, respectively. At this time, the blowing structure 330 is connected to the external air source. When the air hole 311 and the notch 312 are not connected, the external air source can cool the first support plate 310 to improve the welding quality of the shell 20. The welding head can move from the welding portion 4111 to the peripheral side of the shell 20 to weld the shell 20.

[0048] In a preferred embodiment, the notch 312 is connected to the air hole 311 , and the blowing structure 330 is used to transport the shielding gas from the notch 312 toward the welding portion 4111 .

[0049] Thus, when the external gas source enters the air hole 311 through the blowing structure 330, the protective gas can be exhausted along the to-be-welded part of the shell 20 through the notch 312 to improve the welding quality of the shell 20 and avoid blackening.

[0050] Specifically, a side of the second support plate 320 facing the first support plate 310 is provided with an avoidance groove 321 , and the blowing structure 330 is used to be accommodated in the avoidance groove 321 .

[0051] It can be understood that by setting the avoidance groove 321 on the second support plate 320, when the first support plate 310 and the second support plate 320 are close to each other, the blowing structure 330 can be accommodated in the avoidance groove 321. Such a setting can not only make the structure of the first support plate 310 and the second support plate 320 more compact, but also prevent the second support plate 320 from squeezing the blowing structure 330.

[0052] Specifically, the pressure plate device 400 includes a first pressure plate assembly 410 and a second pressure plate assembly 420, the first pressure plate assembly 410 and the second pressure plate assembly 420 are arranged on the outside of the support device 300, and the first pressure plate assembly 410 and the second pressure plate assembly 420 are used to be crimped on opposite sides of the shell 20; the first pressure plate assembly 410 is formed with a welding portion 4111, and the welding portion 4111 is located on the side of the shell 20 away from the support device.

[0053] In this embodiment, the first pressure plate assembly 410 can be crimped to the outer side of the shell 20 in the first direction, and the second pressure plate assembly 420 can be crimped to the outer side of the shell 20 in the second direction. The shell 20 can be fixed in the welding jig 10 by cooperating with the supporting device 300; specifically, during the welding process, the two half shells are usually placed in the placement space of the welding jig 10. At this time, the two half shells to be welded are located at the welding part 4111, and the welding gun is moved in the welding part 4111 to weld the two half shells to form the shell 20.

[0054] In one embodiment, the first pressure plate assembly 410 includes an outer pressure plate 411 and a first pressure plate cylinder 412, the first pressure plate cylinder 412 is connected to the outer pressure plate 411 and is used to drive the outer pressure plate 411 to move along a first direction toward or away from the support device 300; the second pressure plate assembly 420 includes a side pressure plate 421 and a second pressure plate cylinder 422, the second pressure plate cylinder 422 is used to drive the side pressure plate 421 to move along a second direction toward or away from the support device 300, wherein the first direction is perpendicular to the second direction.

[0055] When using the welding fixture 10 of this embodiment, the shell 20 is first placed on the supporting device 300, and then the first pressure plate cylinder 412 is started to drive the outer pressure plate 411 to move toward the first support plate 310 until the first support plate 310 and the outer pressure plate 411 are respectively pressed against the opposite sides of the shell 20, and then the second pressure plate cylinder 422 is started to drive the side pressure plate 421 to move toward the other side of the first support plate 310 until the side pressure plate 421 and the first support plate 310 are respectively pressed against the opposite sides of the shell 20, thereby the first pressure plate assembly 410 and the second pressure plate assembly 420 can press and fix the adjacent two sides of the shell 20. Preferably, the welding portion 4111 is formed by two groups of outer pressure plates 411 arranged at intervals. At this time, each group of outer pressure plates 411 cooperates with the supporting device 300 to crimp and fix a half shell. After the outer pressure plate 411 is moved into place, the two outer pressure plates 411 are arranged at intervals to form a strip-shaped welding portion 4111, that is, a welding groove. At this time, the welding gun can be moved at the welding groove to weld the two half shells.

[0056] Furthermore, the second pressure plate assembly 420 also includes a guide member 423, a guide shaft 424 and a buffer member 425, the guide shaft 424 and the guide member 423 are slidably matched, the guide member 423 is connected to the mounting structure 100, the buffer member 425 is arranged on the guide shaft 424, and the two ends of the buffer member 425 are respectively connected to the side pressure plate 421 and the second pressure plate cylinder 422.

[0057] With this arrangement, when the side pressure plate 421 contacts the shell 20, the buffer member 425 can first provide a buffering effect to prevent the side pressure plate 421 from crushing the shell 20. In addition, when the side pressure plate 421 contacts the shell 20, it can be pressed on the edge of the shell 20 under the elastic action and prevent the edge of the shell 20 from deforming, which is beneficial to improve the flatness of the shell 20; or when the second pressure plate cylinder 422 drives the side pressure plate 421 to move away from the shell 20, it can provide a buffer between the side pressure plate 421 and the first mounting bracket 342, which is specifically set according to the application form of the welding fixture 10, and is not limited here. In this embodiment, the guide member 423 can be a linear bearing. The buffer member 425 can be a coil spring and is sleeved on the guide shaft 424.

[0058] The utility model also provides a battery welding device, which includes a welding jig 10, a welding device and a rotating device in any one of the above-mentioned embodiments; the welding jig 10 is used to be fixed to the peripheral side of the battery shell 20; wherein, the number of the supporting devices 300 is two groups, and the two groups of supporting devices 300 are used to support the opposite sides of the inner wall of the shell 20; the number of the pressing plate devices 400 is four groups, and the four groups of pressing plate devices 400 are respectively crimped to the four corners of the shell 20, and the moving device 200 is used to drive two groups of pressing plate devices 400 and the first support plate 310 to move; the welding device is used to weld the shell 20; the rotating device is connected to the welding jig 10 and is used to drive the welding jig 10 to rotate.

[0059] It can be understood that in the battery welding equipment of this embodiment, by setting the welding fixture 10 in any of the above embodiments to cooperate with the welding device and the rotating device, the welding fixture 10 of this embodiment can be applied to different types of shells 20 by improving the supporting device 300 and the moving device 200, and the overall structure is compact and the use effect is good. After the welding of one side of the shell 20 is completed, the rotating device can drive the welding fixture 10 to rotate so that the welding device can weld the other side of the shell 20.

[0060] The specific usage is as follows:

[0061] When the shell 20 needs to be changed: first, according to the length of the shell 20, the positions of the first support plate 310 and the second support plate 320 in the support device 300 are adjusted by the moving device 200, the first adjustment component 340 and the second adjustment component 350, so that the two groups of support devices 300 can be adapted to the size of the shell 20, so that the length of the support device 300 is slightly smaller than the length of the shell 20, and the width is adjusted to a first state (loading assembly position) slightly larger than the sum of the widths of the two shells 20 to be welded, and then after the shell 20 is installed, the length and width of the support device 300 are adjusted to a second state (welding position) adapted to the size of the shell 20, and after welding is completed, the support device 300 is adjusted to a third state (product removal position) in which its length and width are slightly smaller than the length and width of the shell 20, so that the support device 300 can match the product's external dimensions on the one hand, and facilitate the removal of the shell 20 after welding is completed on the other hand.

[0062] During normal operation, the shell 20 is first placed in the welding fixture 10. After the equipment is running, the first pressure plate cylinder 412 retracts to press the short side welding side of the shell 20, and then the second pressure plate cylinder 422 pushes out the side pressure plate 421 to press the wide side of the shell 20, and the mobile driving member 210 moves inward to dock the edges of the two shells 20 together. After the shell 20 is fixed, the two shells 20 are welded on one side by the welding device. After the single-sided welding is completed, the entire welding fixture 10 is rotated 180° by the rotating device to drive the shell 20 to rotate together, and the other side of the shell 20 is rotated to the welding position for welding. After the welding is completed, the shell 20 is sent to the assembly position, the first pressure plate cylinder 412 and the second pressure plate cylinder 422 retract, and the mobile driving member 210 moves inward again to separate the shell 20 from the welding fixture 10, so as to facilitate the removal of the welded shell 20. After the shell 20 is taken out, it moves outward again to wait for the next cycle of welding.

[0063] The first pressing plate assembly 410 can ensure that the butt joint surfaces of the two shells 20 are at the same level, preventing the two shells 20 from overlapping or having height differences when they are butt jointed; the second pressing plate assembly 420 uses a spring-loaded product to evenly press the large surface of the shell 20, so that the large surface of the shell 20 is completely flattened. The first pressing plate cylinder 412 drives the second pressing plate assembly 420 to press the short surface of the shell 20, leaving only the width of the weld seam exposed, to prevent the shell 20 from deforming due to thermal stress during welding. The first support plate 310 has a notch 312 at the welding point to avoid the weld seam area, to prevent the shell 20 from being welded to the first support plate 310 during welding, and a vent hole is provided in the notch 312 of the first support plate 310 to blow protective gas; during the welding process, the first support plate 310 blows protective gas at the same time to protect the internal weld of the shell 20 and prevent it from turning black or having color spots.

[0064] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying 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 limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0065] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0066] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A welding jig (10), characterized in that: include: Mounting structure (100); A supporting device (300), the supporting device (300) being movably connected to the mounting structure (100) along a first direction and / or a second direction, so that an outer dimension value of the supporting device (300) in the first direction and / or the second direction increases or decreases; and The pressure plate device (400) is arranged on the peripheral side of the support device (300), and the pressure plate device (400) and the support device (300) are arranged at a distance to form a placement space for clamping the shell (20), and the pressure plate device (400) is formed with a welding portion (4111) for welding the shell (20).

2. The welding jig (10) according to claim 1, characterized in that: The welding jig (10) further comprises a moving device (200), wherein the moving device (200) is connected to the mounting structure (100), and the moving device (200) is drivingly connected to the supporting device (300) for driving the supporting device (300) to move along the first direction and / or the second direction.

3. The welding jig (10) according to claim 2, characterized in that: The support device (300) comprises a first support plate (310) and a second support plate (320); the first support plate (310) is connected to the moving device (200); the second support plate (320) is connected to the mounting structure (100); and the moving device (200) drives the first support plate (310) to move closer to or farther from the second support plate (320) along a second direction.

4. The welding jig (10) according to claim 3, characterized in that: The moving device (200) comprises a moving drive member (210) and a fixing plate (220), the moving drive member (210) being connected to the fixing plate (220) and the mounting structure (100) respectively, and the first supporting plate (310) being connected to the fixing plate (220).

5. The welding jig (10) according to claim 4, characterized in that: The support device (300) further comprises a first adjustment component (340) and a second adjustment component (350), wherein the first adjustment component (340) is respectively connected to the first support plate (310) and the fixed plate (220), and the second adjustment component (350) is respectively connected to the second support plate (320) and the mounting structure (100), wherein the first adjustment component (340) is used to drive the first support plate (310) to approach or move away from the pressure plate device (400) along the first direction, and the second adjustment component (350) is used to drive the second support plate (320) to approach or move away from the pressure plate device (400) along the first direction.

6. The welding jig (10) according to claim 5, characterized in that: The first adjustment assembly (340) comprises a first adjustment platform (341) and a first mounting frame (342); the first adjustment platform (341) is connected to the fixed plate (220) and the first mounting frame (342) respectively; the first support plate (310) is connected to the first mounting frame (342), and the first support plate (310) is movably connected to the fixed plate (220) via the first adjustment platform (341); the second adjustment assembly (350) comprises a second adjustment platform (351) and a second mounting frame (352); the second adjustment platform (351) is connected to the mounting structure (100) and the second mounting frame (352) respectively; the second support plate (320) is connected to the second mounting frame (352), and the second support plate (320) is movably connected to the mounting structure (100) via the second adjustment platform (351).

7. The welding jig (10) according to claim 6, characterized in that: The pressure plate device (400) includes a first pressure plate assembly (410) and a second pressure plate assembly (420), wherein the first pressure plate assembly (410) and the second pressure plate assembly (420) are arranged on the outside of the support device (300), and the first pressure plate assembly (410) and the second pressure plate assembly (420) are used to be crimped on opposite sides of the shell (20); the first pressure plate assembly (410) is formed with the welding portion (4111), and the welding portion (4111) is located on a side of the shell (20) away from the support device (300).

8. The welding jig (10) according to claim 7, characterized in that: The welding jig (10) further comprises an air blowing structure (330), the supporting device (300) is provided with a notch (312), the notch (312) is arranged on a side of the first supporting plate (310) facing the first pressing plate assembly (410), and the welding portion (4111) is arranged corresponding to the notch (312), the notch (312) and the welding portion (4111) are respectively located on opposite sides of the shell (20), and the air blowing structure (330) is connected to the notch (312) and / or the welding portion (4111).

9. The welding jig (10) according to claim 8, characterized in that: The first pressing plate assembly (410) comprises an outer pressing plate (411) and a first pressing plate cylinder (412), wherein the first pressing plate cylinder (412) is connected to the outer pressing plate (411) and is used to drive the outer pressing plate (411) to move along a first direction toward or away from the supporting device (300); the second pressing plate assembly (420) comprises a side pressing plate (421) and a second pressing plate cylinder (422), wherein the second pressing plate cylinder (422) is used to drive the side pressing plate (421) to move along a second direction toward or away from the supporting device (300), wherein the first direction is perpendicular to the second direction; And / or, the second pressure plate assembly (420) further includes a guide member (423), a guide shaft (424) and a buffer member (425), the guide shaft (424) and the guide member (423) are slidably matched, the guide member (423) is connected to the mounting structure (100), the buffer member (425) is arranged on the guide shaft (424), and the two ends of the buffer member (425) are respectively connected to the side pressure plate (421) and the second pressure plate cylinder (422).

10. A battery welding device, characterized in that: include: The welding jig (10) according to any one of claims 1 to 9, wherein the welding jig (10) is used to be fixed to the housing (20); A welding device, used for welding the shell (20); and A rotating device is connected to the welding jig (10) and is used to drive the welding jig (10) to rotate.

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