Welding equipment and method for new energy automobile battery shell

Abstract

The invention discloses welding equipment and method for a battery case of a new energy automobile, and belongs to the field of welding, the welding equipment comprises a welding mechanism and a pressing mechanism which are independently arranged, a movable welding head is arranged on the welding mechanism and used for welding, a movable negative pressure suction plate is arranged on the pressing mechanism, and the welding equipment further comprises a supporting mechanism; the supporting mechanism comprises a bottom cross-shaped supporting frame, a supporting flat plate is fixedly arranged on the bottom cross-shaped supporting frame, identical end limiting plates capable of moving up and down are arranged on the supporting flat plate, and two symmetrical first clamping assemblies and two symmetrical second clamping assemblies are arranged on the periphery of the supporting mechanism. The supporting mechanism is arranged to limit and correct the battery shell, it is ensured that the periphery of the battery shell and the top face of the battery shell are always in the perpendicular state, the periphery of the battery shell can be accurately welded in cooperation with the welding mechanism, the side wall of the battery shell is prevented from inclining, and the appearance of the welded battery shell is prevented from deforming.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of welding, in particular to a new energy automobile battery shell welding device and method. BACKGROUND

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as power sources and integrate advanced technologies in vehicle power control and driving to form vehicles with advanced technical principles and new technologies and structures. New energy vehicles include gas vehicles, hybrid vehicles, pure electric vehicles, fuel cell electric vehicles, solar vehicles and other new energy vehicles, and have advantages such as green environmental protection.

[0003] Power batteries are core components of new energy vehicles, accounting for about 30-50% of the cost of the entire vehicle, and their performance directly determines the endurance, charging speed and safety. At present, power batteries mainly use lithium ion batteries. In the processing of power batteries, multiple modules are fixed in the box according to the needs of the entire vehicle or energy storage equipment, and heat dissipation gaps are reserved between the modules.

[0004] The box, i.e. the battery shell, is mainly processed from aluminum alloy or steel plate. Specifically, the aluminum alloy or steel plate is bent to form a specific rectangular structure (such as a square without a cover, with the four sides connected to the bottom, and the four sides not connected to each other), and then the four sides of the rectangular structure are welded to ensure the sealing of the box. The side of the bent rectangular box is prone to tilting under the action of external force or slight deformation of itself, i.e. the angle between the side and the bottom is not 90°. If it is not corrected, the battery after welding may be deformed, increasing the rate of defective products. SUMMARY

[0005] The present application provides a new energy automobile battery shell welding device and method, which can solve the problem that the side of the bent rectangular box is prone to tilting under the action of external force or slight deformation of itself, which may cause the battery after welding to be deformed.

[0006] A new energy automobile battery shell welding device, comprising a welding mechanism and a pressing mechanism arranged independently, a movable welding head is arranged on the welding mechanism, the welding head is used for welding, and a movable negative pressure suction plate is arranged on the pressing mechanism; It also includes a support mechanism, which includes a bottom cross support frame, a support flat plate is fixedly arranged on the bottom cross support frame, the same end limiting plate that can move up and down is arranged on the support flat plate, two groups of first clamping assemblies and two groups of second clamping assemblies that are symmetrical to each other are arranged around the support mechanism, the first clamping assemblies and the second clamping assemblies are the same in structure, and the first clamping assembly comprises a first pressing plate and a second pressing plate in sliding connection with the support flat plate.

[0007] Further, the machine base is further provided, which comprises a bottom plate and a back plate, the bottom plate is fixedly connected with the back plate, the back plate is further fixedly connected with a welding mechanism through a mounting plate, and a pressing mechanism is further mounted below the welding mechanism on the back plate.

[0008] Further, the welding mechanism comprises a frame, first threaded rods and first limiting rods are arranged on both sides of the frame, the first threaded rods are rotatably arranged on the frame, the first limiting rods are fixedly arranged on the frame, first moving boxes are threadedly connected with the first threaded rods, the first moving boxes are slidably connected with the first limiting rods on the same side, the same first moving boxes are slidably arranged on the first limiting rods on the other side, a second threaded rod is rotatably arranged between the two first moving boxes, a second limiting rod is fixedly arranged, a second moving box is threadedly connected with the second threaded rod, the second moving box is slidably connected with the second limiting rod, a first telescopic cylinder is fixedly arranged on the second moving box, an end connecting plate is fixedly arranged on the output end of the first telescopic cylinder, a control box is fixedly arranged on the end connecting plate, a welding head is connected with the control box, the welding head is rotatably connected with the end connecting plate, and the rotation modes of the first threaded rods, the second threaded rod and the welding head include but are not limited to motor driving.

[0009] Further, the pressing mechanism comprises a second telescopic cylinder fixedly arranged on the back plate, a first connecting bracket fixedly arranged on the output end of the second telescopic cylinder, a fourth telescopic cylinder fixedly arranged on the first connecting bracket, a second connecting bracket fixedly arranged on the output end of the fourth telescopic cylinder, and a negative pressure suction plate fixedly arranged on the second connecting bracket, and a negative pressure control mechanism is connected with the negative pressure suction plate.

[0010] Further, the support mechanism further comprises side support frames, the bottom cross support frame and the side support frame are fixedly arranged on the bottom plate, a support plate is fixedly arranged on the side support frame, end limiting plates are symmetrically arranged on both sides of the support plate, the end limiting plates are movable up and down relative to the support plate, limiting strips are fixedly arranged on the end limiting plates, gaps are arranged between the limiting strips, and two groups of first clamping assemblies and two groups of second clamping assemblies are arranged around the support plate.

[0011] Further, the bottom of the support plate is fixedly provided with sliding rods around the four sides, the bottom of the sliding rod is fixedly connected with the bottom cross support frame, and a movable plate is further connected with the support plate through a plurality of first springs below the support plate, the movable plate is in a "U" shape structure, and four edges of the movable plate are slidably connected with the four sliding rods, respectively, a vertical rod is fixedly connected with the bottom of the end limiting plate, and the bottom of the vertical rod is fixedly connected with the movable plate.

[0012] Further, the first clamping assembly comprises a first sliding rod and a second sliding rod, the first sliding rod is L-shaped, one end of the first sliding rod is provided with a first sliding groove, one end of the first sliding groove is fixedly connected with a second spring, the first sliding groove is also provided with a first pressing plate which is slidably arranged, one end of the second spring is fixedly connected with the first pressing plate, the second sliding rod is also L-shaped, the top end of the second sliding rod is provided with a second sliding groove, one end of the second sliding groove is fixedly provided with a third spring, the second sliding groove is also provided with a second pressing plate which is slidably arranged, one end of the third spring is fixedly connected with the second pressing plate.

[0013] Further, the second pressing plate on the first clamping assembly is fixedly connected with a right-angle baffle through two connecting strips, and the second clamping assembly is not provided with the connecting strips and the right-angle baffle.

[0014] Further, the first sliding rod is rotatably provided with a first connecting rod, the second sliding rod is rotatably provided with a second connecting rod, the bottom of the movable plate is fixedly provided with a circular ring, the bottom of the circular ring is fixedly provided with a connecting ring, the sliding rod passes through the movable plate, the circular ring and the connecting ring in sequence and is in sliding fit with the movable plate, the circular ring and the connecting ring, the first connecting rod and the second connecting rod are rotatably connected with the connecting ring, the first connecting rod and the second connecting rod are symmetrical about the connecting ring, the bottom cross support frame is provided with a plurality of third sliding grooves which are in sliding fit with the first sliding rod and the second sliding rod.

[0015] A welding method of a new energy automobile battery shell welding device, comprising the following steps: S1: first, place the box on the supporting mechanism, and preliminarily limit the box through the end limiting plate on the supporting mechanism, and press down the box through the pressing mechanism, so that the end limiting plate moves downward, at this time, the two groups of first clamping assemblies and the two groups of second clamping assemblies straighten the four sides of the box, so that they remain vertical; S2: then drive the welding head on the welding mechanism to change position, weld the four sides of the box, and after welding, the pressing mechanism takes out the box by negative pressure suction.

[0016] Advantages

[0017] 1: The battery shell is limited and corrected by the supporting mechanism, the end limiting plate is arranged on the supporting mechanism, the end limiting plate can preliminarily limit the battery shell, ensures that the battery shell is flush with the supporting flat plate, and the first clamping assembly and the second clamping assembly which are symmetrical with each other are arranged on the supporting mechanism, the first clamping assembly and the second clamping assembly can straighten the four sides of the battery shell respectively, ensures that the four sides of the battery shell are always perpendicular to the top surface, and the precise welding of the four sides of the battery shell can be realized by cooperating with the welding mechanism, so that the inclination of the side wall of the battery shell is avoided, and the deformation of the appearance of the battery shell after welding is avoided.

[0018] 2、The present application further comprises movable right-angled baffles on the first clamping assembly of the supporting mechanism, which can be moved to the four corners inside the battery shell when the first clamping assembly and the second clamping assembly are attached to the battery shell, and can shield the inside of the welding position during the welding process, preventing sparks generated during welding from splashing into the battery shell and causing the internal shell to burn or scorch, and further protecting the battery shell during the welding process. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a front view of the overall structure of the present application; Figure 2 is a schematic view of the welding mechanism structure of the present application; Figure 3 is a front view of the pressing mechanism of the present application; Figure 4 is a working schematic view of the supporting mechanism of the present application; Figure 5 is a schematic view of the supporting mechanism of the present application Figure 4 is an enlarged schematic view of the structure of part A of the present application; Figure 6 is a schematic view of the overall structure of the supporting mechanism of the present application; Figure 7 is a schematic view of the first clamping assembly structure of the present application Figure I ; Figure 8 is a schematic view of the first clamping assembly structure of the present application Figure II ; Figure 9 is a front view of the first clamping assembly of the present application.

[0020] BRIEF DESCRIPTION OF DRAWINGS: 100, base; 200, welding mechanism; 300, pressing mechanism; 400, battery shell; 500, supporting mechanism; 101, back plate; 102, bottom plate; 103, mounting connecting plate; 201, frame; 202, first threaded rod; 203, first limiting rod; 204, first moving box; 205, second threaded rod; 206, second limiting rod; 207, second moving box; 208, first telescopic cylinder; 209, end connecting plate; 210, control box; 211, welding head; 301, second telescopic cylinder; 302, first connecting support; 303, fourth telescopic cylinder; 304, second connecting support; 305, negative pressure suction plate; 306, negative pressure control mechanism; 401, box body; 402, window; 403, splicing seam; 501, side edge supporting frame; 502, bottom cross supporting frame; 503, supporting flat plate; 504, end limiting plate; 505, limiting strip; 506, first clamping assembly; 507, second clamping assembly; 508, sliding rod; 509, movable plate; 510, first spring; 511, vertical rod; 50601, second pressing plate; 50602, right-angle baffle; 50603, connecting strip; 50604, second sliding rod; 50605, second sliding groove; 50606, third spring; 50607, first pressing plate; 50608, first sliding rod; 50609, first sliding groove; 50610, second spring; 50611, third sliding groove; 50612, circular ring; 50613, connecting ring; 50614, first connecting rod; 50615, second connecting rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0022] As shown in Figure 1 The welding device for a battery shell of a new energy vehicle provided by the embodiment of the present application comprises a base 100, the base 100 comprises a bottom plate 102 and a back plate 101, the bottom plate 102 and the back plate 101 are fixedly connected, a welding mechanism 200 is further fixedly connected to the back plate 101 through a mounting connecting plate 103, a pressing mechanism 300 is further mounted below the welding mechanism 200 on the back plate 101, a supporting mechanism 500 is further fixedly arranged on the bottom plate 102, and the supporting mechanism 500 is used for supporting the battery shell 400. Figure 4 and 5As shown, the battery shell 400 needs to be bent and welded during processing, that is, the plate is bent first, and the bent rectangular box body 401 is formed, and the coverless end also has a window 402 for installing the battery top cover. The four sides of the bent battery box body 401 are in an unspliced state, and there is a splice joint 403, which needs to be welded by using the welding mechanism 200.

[0023] As shown in Figure 2 As shown, since the box body 401 needs to be welded in this embodiment to ensure its sealing, the welding mechanism 200 in this embodiment includes a frame 201, and a first threaded rod 202 and a plurality of first limiting rods 203 are arranged on both sides of the frame 201. The first threaded rod 202 is rotatably arranged on the frame 201, and the plurality of first limiting rods 203 are fixedly arranged on the frame 201. A first moving box 204 is threadedly arranged on the first threaded rod 202, and the first moving box 204 is slidably arranged with the first limiting rod 203 on the same side. A plurality of first limiting rods 203 on the other side are also slidably arranged with the same first moving box 204. A second threaded rod 205 is rotatably arranged between the two first moving boxes 204, and a second limiting rod 206 is fixedly arranged. A second moving box 207 is threadedly arranged on the second threaded rod 205, and the second moving box 207 is slidably arranged with the second limiting rod 206. A first telescopic cylinder 208 is fixedly arranged on the second moving box 207, and an end connecting plate 209 is fixedly arranged on the output end of the first telescopic cylinder 208. A control box 210 is fixedly arranged on the end connecting plate 209, and a welding head 211 is connected to the control box 210. The welding head 211 is rotatably arranged with the end connecting plate 209. In this embodiment, the rotating modes of the first threaded rod 202, the second threaded rod 205, and the welding head 211 include but are not limited to motor driving.

[0024] In use, the three-axis movement of the welding head 211 is realized by the cooperation of the first threaded rod 202, the second threaded rod 205, and the first telescopic cylinder 208. The welding head 211 can be moved to the four corners of the box body 401 to realize the welding of the splice joint 403. Meanwhile, the welding head 211 can also rotate on the basis of three-axis movement, and can also realize the welding of the splice joint 403 at the window 402. The welding head 211 in this embodiment can rotate on the basis of three-axis movement, and this embodiment only provides one way of three-axis movement of the welding head 211. When this technical solution is implemented, the position of the welding head 211 can also be changed by using other three-axis movement platforms in cooperation with a mechanical arm.

[0025] As shown in Figure 3As shown, the pressing mechanism 300 includes a second telescopic cylinder 301 fixed on the back plate 101, the output end of the second telescopic cylinder 301 is fixedly provided with a first connecting bracket 302, the first connecting bracket 302 is fixedly provided with a fourth telescopic cylinder 303, the output end of the fourth telescopic cylinder 303 is fixedly provided with a second connecting bracket 304, the second connecting bracket 304 is fixedly provided with a negative pressure suction plate 305, the negative pressure suction plate 305 is connected with a negative pressure control mechanism 306, the pressing mechanism 300 is mainly used for pressing the box body 401 on the supporting mechanism 500, avoiding displacement of the box body 401 in the welding process, in use, the negative pressure suction plate 305 can be moved to the upper side of the box body 401 and contacted with the box body 401 through the cooperation of the second telescopic cylinder 301 and the fourth telescopic cylinder 303, the box body 401 is pressed on the welding position (the pressing force should not be too large in the pressing process, so as to avoid deformation of the box body 401 due to stress, affecting welding), after welding, since the temperature is too high during welding, the box body 401 may not be completely cooled, at this time, if the box body 401 after welding is directly taken out by artificial, the situation of scalding may occur, therefore, the embodiment realizes negative pressure suction of the box body 401 after welding through the negative pressure suction plate 305 cooperating with the negative pressure control mechanism 306, the box body 401 after welding is taken out, avoiding the problem of scalding that may exist in artificial taking out.

[0026] Since there are splicing seams 403 on the four peripheral sides of the box body 401, the side surfaces on both sides of the splicing seam 403 may not be completely aligned during the welding process, the side surfaces on both sides may be misaligned, if the two sides are not aligned in time, the box body 401 may be deformed during the welding process, affecting product quality, therefore, the embodiment is provided with a special supporting mechanism 500, which limits the four peripheries of the box body 401 respectively, ensuring that the four peripheries of the box body 401 are always in a vertical state, avoiding that the four peripheries of the box body 401 are inclined, causing the four splicing seams 403 to deviate.

[0027] As shown, Figure 4 The coverless surface of the box body 401 is clamped on the supporting mechanism 500 for alignment and limiting. The supporting mechanism 500 includes a bottom cross supporting frame 502 and a side supporting frame 501, the bottom cross supporting frame 502 and the side supporting frame 501 are both fixed on the bottom plate 102, as shown in Figure 6As shown, the side support frame 501 is fixedly provided with a support plate 503, and end limiting plates 504 are symmetrically provided at both sides of the support plate 503, the end limiting plates 504 are movable up and down relative to the support plate 503, limiting strips 505 are fixedly provided on the end limiting plates 504, and gaps are provided between the limiting strips 505, and the support plate 503 is respectively provided with two groups of first clamping assemblies 506 and two groups of second clamping assemblies 507, wherein the two groups of first clamping assemblies 506 are symmetrically arranged, the two groups of second clamping assemblies 507 are symmetrically arranged, and the two groups of first clamping assemblies 506 and the two groups of second clamping assemblies 507 respectively perform straightening operations on the four sides of the box body 401.

[0028] As shown in Figure 6 The bottom of the support plate 503 is fixedly provided with slide rods 508, the bottom of the slide rods 508 is fixedly connected with the bottom cross support frame 502, and the lower side of the support plate 503 is further connected with a movable plate 509 through a plurality of first springs 510, the movable plate 509 is in a "U" shape structure, and the four edges of the movable plate 509 are respectively slidably connected with the four slide rods 508, the bottom of the end limiting plate 504 is fixedly connected with a vertical rod 511, the bottom of the vertical rod 511 is fixedly connected with the movable plate 509, in the initial state, the end limiting plate 504 is located at the position of the support plate 503, and the first spring 510 is not deformed, when the box body 401 is placed in the end limiting plate 504 (the window 402 of the box body 401 is in contact with the limiting strip 505 to achieve limiting), the end limiting plates 504 on both sides are moved downward under the gravity and the pressure of the downward pressing mechanism 300, at this time, the first spring 510 is stretched, and the movable plate 509 is synchronously moved downward with the end limiting plate 504.

[0029] The two groups of first clamping assemblies 506 and the two groups of second clamping assemblies 507 in the embodiment have the same principle and structure, and one of the first clamping assemblies 506 is taken as an example, and specifically, as shown in Figure 7 The first clamping assembly 506 includes first and second slide rods 50608 and 50604 which are slidably arranged, the first slide rod 50608 is in an L shape, a first sliding groove 50609 is formed at one end of the first slide rod 50608, a second spring 50610 is fixedly connected with one end in the first sliding groove 50609, a first pressing plate 50607 is slidably arranged in the first sliding groove 50609, and one end of the second spring 50610 is fixedly connected with the first pressing plate 50607, as shown in Figure 8As shown, the second sliding rod 50604 is also L-shaped, and a second sliding groove 50605 is formed at the top end of the second sliding rod 50604. A third spring 50606 is fixedly arranged in one end of the second sliding groove 50605. A second pressing plate 50601 is slidably arranged in the second sliding groove 50605. One end of the third spring 50606 is fixedly connected with the second pressing plate 50601. During use, by moving the positions of the two first sliding rods 50608 and the second sliding rod 50604, the first pressing plate 50607 and the second pressing plate 50601 can be respectively attached to the inner and outer walls of the side surface of the box body 401. At the same time, the third spring 50606 and the second spring 50610 are adaptively adjusted, so as to ensure that the first pressing plate 50607 and the second pressing plate 50601 are simultaneously attached to the inner and outer walls of the side surface of the box body 401. Since the first pressing plate 50607 and the second pressing plate 50601 are always in a vertical state, when the first pressing plate 50607 and the second pressing plate 50601 are simultaneously attached to the inner and outer walls of the side surface of the box body 401, it can be ensured that the side surface of the box body 401 is also in a vertical state, that is, the side surface of the box body 401 is perpendicular to the top surface of the box body 401. The two groups of first clamping assemblies 506 and the two groups of second clamping assemblies 507 can simultaneously ensure that the side surface of the box body 401 is in a vertical state, so as to correct the side surface of the box body 401 and effectively prevent the side surface of the box body 401 from being inclined. The side surfaces of the box body 401 are all in a vertical state, and the splicing seams 403 are spliced with each other, so as to facilitate welding.

[0030] During the welding process, the temperature is too high, and welding sparks are also generated. The welding sparks may penetrate into the inside of the box body 401 through the splicing seam 403, so that the inside of the box body 401 is blackened or even burned. Therefore, the present application avoids this situation by increasing right-angle baffles 50602 on both sides of the second pressing plate 50601. Specifically, the right-angle baffles 50602 are symmetrically and fixedly connected to the second pressing plate 50601 through two connecting strips 50603. When the first pressing plate 50607 and the second pressing plate 50601 are respectively attached to the inner and outer walls of the side surface of the box body 401, the two right-angle baffles 50602 are respectively attached to the right-angle positions of the adjacent edges of the box body 401, that is, the positions of the adjacent splicing seams 403. The right-angle baffles 50602 shield the splicing seams 403 in the inside of the box body 401, so as to prevent the sparks generated during welding from splashing into the inside of the box body 401 and causing internal damage.

[0031] As shown in FIG. 6, the two groups of first clamping assemblies 506 and the two groups of second clamping assemblies 507 are arranged on the two side surfaces of the box body 401. Figure 9As shown, the embodiment also provides a driving mode for realizing the synchronous movement of the first pressing plate 50607 and the second pressing plate 50601. Specifically, the first sliding rod 50608 is rotationally provided with a first connecting rod 50614, the second sliding rod 50604 is rotationally provided with a second connecting rod 50615, the bottom of the movable plate 509 is fixedly provided with a ring member 50612, the bottom of the ring member 50612 is fixedly provided with a connecting ring 50613, the slide rod 508 passes through the movable plate 509, the ring member 50612 and the connecting ring 50613 in sequence and is in sliding fit with the movable plate 509, the ring member 50612 and the connecting ring 50613, the first connecting rod 50614 and the second connecting rod 50615 are rotationally connected with the connecting ring 50613, and the first connecting rod 50614 and the second connecting rod 50615 are symmetrical about the connecting ring 50613, as shown in the figure. Figure 7 As shown, the bottom cross support frame 502 is provided with a plurality of third sliding grooves 50611, and the plurality of third sliding grooves 50611 are in sliding fit with the first sliding rod 50608 and the second sliding rod 50604. In use, when the movable plate 509 moves downward, the connecting ring 50613 fixedly connected thereon moves downward synchronously, and the first sliding rod 50608 and the second sliding rod 50604 move relatively under the action of the first connecting rod 50614 and the second connecting rod 50615, the first sliding rod 50608 and the second sliding rod 50604 move toward the direction of approaching the box body 401, and finally the first pressing plate 50607 and the second pressing plate 50601 are attached to the box body 401, thereby realizing the correction of the side wall of the box body 401.

[0032] The two groups of first clamping assemblies 506 and the two groups of second clamping assemblies 507 in the embodiment are the same in principle and structure, that is, when the movable plate 509 moves downward, the four groups of first pressing plates 50607 and second pressing plates 50601 on the two groups of first clamping assemblies 506 and the two groups of second clamping assemblies 507 move synchronously and realize the correction of the side wall of the box body 401. It should be noted that after the first pressing plate 50607 and the second pressing plate 50601 are attached to the side wall of the box body 401, the movable plate 509 continues to move downward by a short distance, which does not affect the position of the first pressing plate 50607 and the second pressing plate 50601. The first pressing plate 50607 and the second pressing plate 50601 can be kept relatively stationary through self-adaptive adjustment of the third spring 50606 and the second spring 50610. Since the downward movement of the movable plate 509 is driven by the end limiting plate 504, that is, after the first pressing plate 50607 and the second pressing plate 50601 are attached to the side wall of the box body 401, the downward movement of the pressing mechanism 300 can make the two end limiting plates 504 attached to the supporting flat plate 503. At this time, the end limiting plate 504 is located below the first pressing plate 50607. At this time, the first pressing plate 50607 can pass through the gap between the limiting strips 505 and be attached to the box body 401, thereby avoiding the situation that the first pressing plate 50607 is limited by the limiting strips 505.

[0033] In order to avoid the interference of the right-angled baffle 50602 at the four corners of the box body 401, the right-angled baffles 50602 and the connecting strips 50603 are not arranged on both sides of the second pressing plate 50601 of the second clamping assembly 507 in the embodiment, and the four right-angled baffles 50602 on the first clamping assembly 506 can achieve the use requirement of the embodiment.

[0034] A welding method of a new energy automobile battery shell welding device, comprising the following steps: S1: first, place the box body 401 on the supporting mechanism 500, and preliminarily limit the box body 401 through the end limiting plate 504 on the supporting mechanism 500, and press down the box body 401 through the pressing mechanism 300, so that the end limiting plate 504 moves downward, at this time, the two groups of first clamping assemblies 506 and the two groups of second clamping assemblies 507 realize the straightening of the four sides of the box body 401, so as to keep vertical; S2: then, drive the welding head 211 on the welding mechanism 200 to change the position, weld the four sides of the box body 401, and after welding, the pressing mechanism 300 takes out the box body 401 through negative pressure suction.

[0035] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, and a particular orientation configuration and operation, therefore, it cannot be understood as a limitation on the present application. In addition, "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0036] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] The above has been described in detail one embodiment of the present application, but the content is only the preferred embodiment of the present application, cannot be considered for limiting the scope of the present application. Any equivalent changes and improvements made in the scope of the present application, should still belong to the scope of the present application.

Claims

1. A welding device for a battery casing of a new energy vehicle, characterized in that, It includes an independently set welding mechanism (200) and a pressing mechanism (300). The welding mechanism (200) is equipped with a movable welding head (211) for welding. The pressing mechanism (300) is equipped with a movable negative pressure suction plate (305). It also includes a support mechanism (500), which includes a bottom cross support frame (502), a support plate (503) fixedly mounted on the bottom cross support frame (502), and an identical end limiting plate (504) that can move up and down on the support plate (503). The support mechanism (500) is provided with two sets of mutually symmetrical first clamping components (506) and two sets of mutually symmetrical second clamping components (507) around its perimeter. The first clamping components (506) and the second clamping components (507) have the same structure. The first clamping component (506) includes a first pressure plate (50607) and a second pressure plate (50601) that are slidably connected to the support plate (503).

2. The welding equipment for a new energy vehicle battery casing as described in claim 1, characterized in that, It also includes a base (100), which includes a base plate (102) and a back plate (101). The base plate (102) and the back plate (101) are fixedly connected. A welding mechanism (200) is also fixedly connected to the back plate (101) by means of a mounting connecting plate (103). A pressing mechanism (300) is also installed on the back plate (101) below the welding mechanism (200). A support mechanism (500) is also fixedly provided on the base plate (102).

3. The welding equipment for a new energy vehicle battery casing as described in claim 2, characterized in that, The welding mechanism (200) includes a frame (201). A first threaded rod (202) and several first limiting rods (203) are respectively provided on both sides of the frame (201). The first threaded rod (202) is rotatably mounted to the frame (201), and the several first limiting rods (203) are fixedly mounted to the frame (201). A first movable box (204) is threaded onto the first threaded rod (202). The first movable box (204) is slidably mounted to the first limiting rod (203) on the same side. The same first movable box (204) is also slidably mounted on several first limiting rods (203) on the other side. A second threaded rod (205) is rotatably mounted between two first movable boxes (204), and a first threaded rod (205) is fixedly mounted between them. The second limit rod (206) and the second threaded rod (205) are threaded together with a second movable box (207). The second movable box (207) and the second limit rod (206) are slidably connected. The second movable box (207) is fixedly provided with a first telescopic cylinder (208). The output end of the first telescopic cylinder (208) is fixedly provided with an end connecting plate (209). The end connecting plate (209) is fixedly provided with a control box (210). The control box (210) is connected with a welding head (211). The welding head (211) and the end connecting plate (209) are rotatably connected. The rotation methods of the first threaded rod (202), the second threaded rod (205) and the welding head (211) are including but not limited to motor drive.

4. The welding equipment for a new energy vehicle battery casing as described in claim 2, characterized in that, The pressing mechanism (300) includes a second telescopic cylinder (301) fixed on the back plate (101), a first connecting bracket (302) fixedly provided at the output end of the second telescopic cylinder (301), a fourth telescopic cylinder (303) fixedly provided on the first connecting bracket (302), a second connecting bracket (304) fixedly provided at the output end of the fourth telescopic cylinder (303), a negative pressure suction plate (305) fixedly provided on the second connecting bracket (304), and a negative pressure control mechanism (306) connected to the negative pressure suction plate (305).

5. The welding equipment for a new energy vehicle battery casing as described in claim 2, characterized in that, The support mechanism (500) also includes a side support frame (501), a bottom cross support frame (502) and a side support frame (501) both fixed on the base plate (102), a support plate (503) fixed on the side support frame (501), end limiting plates (504) symmetrically provided on both sides of the support plate (503), the end limiting plates (504) can move up and down relative to the support plate (503), a limiting strip (505) fixed on the end limiting plate (504), a notch provided between the limiting strips (505), and two sets of first clamping components (506) and two sets of second clamping components (507) respectively provided around the support plate (503).

6. The welding equipment for a new energy vehicle battery casing as described in claim 5, characterized in that, The bottom of the support plate (503) is fixedly provided with sliding rods (508) around its four sides. The bottom of each sliding rod (508) is fixedly connected to the bottom cross support frame (502). The bottom of the support plate (503) is also connected to a movable plate (509) by several first springs (510). The movable plate (509) has a "U" shaped structure, and the four sides of the movable plate (509) are slidably connected to the four sliding rods (508) respectively. The bottom of the end limiting plate (504) is fixedly connected with a vertical rod (511), and the bottom of the vertical rod (511) is fixedly connected to the movable plate (509).

7. The welding equipment for a new energy vehicle battery casing as described in claim 6, characterized in that, The first clamping assembly (506) includes a first sliding rod (50608) and a second sliding rod (50604) slidably disposed thereon. The first sliding rod (50608) is L-shaped, and a first groove (50609) is formed at one end of the first sliding rod (50608). A second spring (50610) is fixedly connected to one end of the first groove (50609). A first pressure plate (50607) is also slidably disposed within the first groove (50609). One end of 10) is fixedly connected to the first pressure plate (50607). The second sliding rod (50604) is also L-shaped. The top end of the second sliding rod (50604) is provided with a second sliding groove (50605). One end of the second sliding groove (50605) is fixedly provided with a third spring (50606). The second pressure plate (50601) is slidably provided in the second sliding groove (50605). One end of the third spring (50606) is fixedly connected to the second pressure plate (50601).

8. The welding equipment for a new energy vehicle battery casing as described in claim 7, characterized in that, The second pressure plate (50601) on the first clamping assembly (506) is symmetrically and fixedly connected to a right-angle baffle (50602) by two connecting strips (50603). The second clamping assembly (507) is not provided with connecting strips (50603) and right-angle baffles (50602).

9. The welding equipment for a new energy vehicle battery casing as described in claim 8, characterized in that, A first connecting rod (50614) is rotatably mounted on the first sliding rod (50608), and a second connecting rod (50615) is rotatably mounted on the second sliding rod (50604). A circular ring (50612) is fixedly mounted at the bottom of the movable plate (509), and a connecting ring (50613) is fixedly mounted at the bottom of the circular ring (50612). The sliding rod (508) passes through the movable plate (509), the circular ring (50612), and the connecting ring (50613) in sequence, and interacts with the movable plate (509) and the circular ring (50615). 12) It is slidably engaged with the connecting ring (50613). The first connecting rod (50614) and the second connecting rod (50615) are rotatably connected to the connecting ring (50613) respectively. The first connecting rod (50614) and the second connecting rod (50615) are symmetrical about the connecting ring (50613). The bottom cross support frame (502) is provided with several third sliding grooves (50611). The several third sliding grooves (50611) are slidably engaged with the first sliding rod (50608) and the second sliding rod (50604) respectively.

10. A welding method for a welding equipment for a new energy vehicle battery casing, applied to the welding equipment for a new energy vehicle battery casing as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: First, place the box on the support mechanism (500) and use the end limiting plate (504) on the support mechanism (500) to initially limit the box. Then, use the pressing mechanism (300) to press down the box, causing the end limiting plate (504) to move downward. At this time, the two sets of first clamping components (506) and the two sets of second clamping components (507) straighten the sides of the box to keep it vertical. S2: Subsequently, the welding head (211) on the drive welding mechanism (200) changes position to weld around the box (401). After welding, the pressing mechanism (300) removes the box by negative pressure suction.

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