Battery module tab welding device

Abstract

The utility model discloses a battery module tab welding device in the technical field of battery module tab welding, and aims to solve the problems of tedious operation steps and lower efficiency of battery module tab welding work in the prior art. The method comprises the following steps: stably placing a battery module body on a station of a supporting frame through the clamping effect of a push rod and a clamping plate on the battery module body and the supporting effect of a bracket and the supporting frame on the clamping plate; the pressing and welding of the tab body are realized through the pressing mechanism; the clamping plates are driven by the turnover mechanism to turn over, so that the positions of a plurality of tab bodies of the battery module body are changed, pressing and welding of the tab bodies at multiple ends are realized, the battery module body is prevented from being disassembled and assembled again, the efficiency of battery module tab welding work is improved, and the operation procedure is simplified.

Description

Technical Field

[0001] The utility model relates to a battery module pole ear welding device, belonging to the technical field of battery module pole ear welding. Background Art

[0002] The electrode ear is the electrode on the battery module. The material of the electrode ear is generally pure nickel electrode ear, aluminum electrode ear and surface-plated electrode ear, so the electrode ear is suitable for welding. As the electrode of the battery module, the electrode ear not only needs to maintain good electrical conductivity, but also needs to maintain relatively stable electrical conduction; specifically, during the production and processing, the electrode ear is processed into an electrode ear band, and the electrode ear band is welded to the battery module by welding. For the battery module, during the welding process, it is often necessary to weld the electrode ear band to multiple electrode modules, and then use wires for electrical series and parallel connection.

[0003] The prior art uses a battery module pole ear welding device to simplify the welding process of the electrode ear. The battery modules are basically arranged and fixed, and the electrode ears are pressed and welded one by one using mechanical parts until all the pole ears on the top of the battery module are welded. The inventor found that some battery modules have electrode ears on both sides. Therefore, after the electrode ears on the top of the battery module are welded using the existing welding device, it is necessary to manually contact the welding device to fix the battery module and install the battery module upside down before the electrode ears on the bottom of the battery module can be welded.

[0004] Therefore, the existing battery module tab welding device requires first disassembling the welding device, manually turning the battery module over and then installing it into the welding device, and then welding the tab at the lower end of the battery module. This operation is cumbersome and reduces the efficiency of the battery module tab welding work. Utility Model Content

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a battery module pole ear welding device that simplifies the welding process to achieve welding of electrode ears at both ends of a battery module.

[0006] To achieve the above objectives, the present disclosure is implemented by adopting the following technical solutions:

[0007] The present disclosure provides a battery module tab welding device, comprising:

[0008] A supporting mechanism, comprising a clamping plate and a supporting frame connected to the clamping plate, wherein the clamping plate is used to clamp the battery module body in a station of the supporting frame;

[0009] A flipping mechanism is connected to the clamp for torque transmission; the battery module body includes a tab body, and the tab body includes at least a first-end tab body and a second-end tab body. The flipping mechanism is used to drive the battery module body to flip and exchange the relative positions of different end tab bodies.

[0010] In some embodiments of the present disclosure,

[0011] The support mechanism also includes a push rod and a bracket. The support frame is supported and connected to the bracket. The bracket is rotationally supported and connected to the clamping plate on one side of the support frame. The push rod is force-transmittingly connected to the clamping plate. The push rod pushes the clamping plate to clamp the battery module body in the work station of the support frame.

[0012] In some embodiments of the present disclosure, the support mechanism also includes a rotating shaft passing through the bracket, the bracket is rotatably supported and connected to the rotating shaft, the rotating shaft is connected to a support groove for torque transmission support at one end close to the support frame, and the support groove is connected to the splint torque transmission support; the rotating shaft is torque-transmittingly connected to the flipping mechanism.

[0013] In some embodiments of the present disclosure, the flipping mechanism includes a transmission belt, a transmission rod and a flipping motor; the two ends of the transmission belt are respectively torsionally connected to the transmission rod and the rotating shaft, and the rotating shaft is torsionally connected to the flipping motor; the transmission belt is distributed along the side of the flipping area of ​​the battery module body, and the flipping motor is fixed to a position of the support frame away from the work station.

[0014] In some embodiments of the present disclosure, the flip motor is a dual-axis motor, and the two ends of the flip motor are respectively connected to the two rotating shafts for torque transmission; at least two clamps are clamped from both sides of the battery module body, and each clamp is connected to the rotating shaft on the corresponding side for torque transmission.

[0015] In some embodiments of the present disclosure, the clamping plate is clamped along the arrangement direction of the battery module body, the plane shape of the clamping plate matches the plane shape of the adjacent battery in the battery module body, and the force transmission direction of the push rod is perpendicular to the clamping plate;

[0016] A pressure sensor is arranged on the contact surface between the clamping plate and the battery module body.

[0017] In some embodiments of the present disclosure, a pressing mechanism is further included, the pressing mechanism is connected to the supporting mechanism, the pressing mechanism includes a slide groove installed on the supporting frame, the position of the slide groove corresponds to the tab body at either end, and the slide groove is distributed along the arrangement direction of the battery module body;

[0018] The pressing mechanism further comprises a sliding block slidably connected to the sliding groove, the sliding block is provided with a pressing head assembly, and the pressing head assembly is used for assisting in welding the tab body.

[0019] In some embodiments of the present disclosure, the pressing mechanism further includes a limit bolt, which is threadedly assembled on the sliding block, and a distal end of the limit bolt contacts the sliding groove.

[0020] In some embodiments of the present disclosure, the pressing mechanism also includes an L-shaped frame, which includes two arms connected to each other, one of the arms of the L-shaped frame is connected to a side of the sliding block facing away from the support frame, and the other arm of the L-shaped frame is installed with a telescopic push rod, which is arranged toward the direction of the pole ear body, and a welding groove is installed at the end of the telescopic push rod, which is used to press and contact the pole ear body.

[0021] In some embodiments of the present disclosure, two slide grooves are arranged in parallel, and the sliding blocks of the two slide grooves slide synchronously. Two L-shaped frames are arranged correspondingly and their openings are both facing the interior of the two slide grooves. A lifting plate is installed at the end of the telescopic push rod, and the lifting plates on both sides are connected to the same pressing plate, and the pressing plate has the welding groove.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The battery module tab welding device provided by the present invention can stably place the battery module body on the work station of the support frame by clamping the battery module body with the clamping plate and supporting the clamping plate with the support frame; the clamping plate is driven to flip by the flipping mechanism to replace the positions of multiple tab bodies of the battery module body, and the pressing welding of multi-terminal tab bodies is realized, thereby avoiding the need to disassemble and install the battery module body again, improving the efficiency of the battery module tab welding work, and simplifying the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present disclosure or 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 present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 is a schematic diagram of the three-dimensional structure of the battery module tab welding device provided in this embodiment;

[0026] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure from another perspective;

[0027] Figure 3 yes Figure 1 A schematic diagram of the front view structure of

[0028] Figure 4 yes Figure 1 A schematic diagram of a top view structure;

[0029] Figure 5 yes Figure 1 Schematic diagram of the structure of the pressure sensor on the side of the middle clamp close to the battery module body.

[0030] In the figure: 100, supporting mechanism; 101, supporting frame; 102, battery module body; 103, tab body; 104, bracket; 105, rotating shaft; 106, supporting groove; 107, push rod; 108, clamping plate; 109, pressure sensor; 110, base; 111, flip motor; 112, transmission rod; 113, transmission belt; 200, pressing mechanism; 201, slide groove; 202, sliding block; 203, limit bolt; 204, L-shaped frame; 205, telescopic push rod; 206, lifting plate; 207, pressing plate; 208, welding groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present disclosure / the present application to clearly and completely describe the technical solutions in the embodiments of the present disclosure / the present application. Obviously, the described embodiments are only part of the embodiments of the present disclosure / the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure / the present application and its application or use. Embodiment 1

[0032] The present embodiment provides a battery module tab welding device to solve the problems of complicated operation steps and low efficiency of battery module tab welding in the prior art.

[0033] refer to Figures 1 to 5 The battery module tab welding device provided in this embodiment includes:

[0034] The support mechanism 100 includes a clamping plate 108, a bracket 104, a push rod 107 and a support frame 101. The support frame 101 is supported and connected to the bracket 104. The bracket 104 is rotationally supported and connected to the clamping plate 108 on one side of the support frame 101. The push rod 107 is force-transmittingly connected to the clamping plate 108. The push rod 107 pushes the clamping plate 108 to clamp the battery module body 102 in the working position of the support frame 101.

[0035] The battery module tab welding device also includes a pressing mechanism 200, which is connected to the supporting mechanism 100. A plurality of tab bodies 103 are provided on the battery module body 102. As one embodiment, the plurality of tab bodies 103 include a first-end tab body and a second-end tab body. The position of the supporting mechanism 100 matches the tab body 103 at either end. The pressing mechanism 200 is used to press the tab body 103 to facilitate the welding process.

[0036] As one embodiment, the first-end tab body and the second-end tab body are respectively located at the upper and lower ends of the battery module body 102; for ease of description, the first-end tab body and the second-end tab body are referred to as the upper and lower tab bodies 103 for easier understanding.

[0037] The clamping plate 108 is also torsionally connected to the flipping mechanism, and the flipping mechanism drives the battery module body 102 to flip so as to exchange the positions of the tab bodies 103 at both ends.

[0038] Optionally, the battery module body 102 is supported by the clamping plate 108 through friction, and the clamping plate 108 is supported by the bracket 104 and the support frame 101 .

[0039] Optionally, the push rod 107 can be connected to the clamping plate 108 alone. Figure 4 As shown, the push rod 107 is used as a supporting medium between the clamping plate 108 and the bracket 104.

[0040] Non-unique usage process: adjust the telescopic stroke of the push rod 107 so that the reserved width between the clamps 108 and the clamps 108, or between the clamps 108 and other clamping parts is slightly larger than the width of the battery module 102, put the battery module 102 between the clamps 108 and the clamps 108, or between the clamps 108 and other clamping parts, adjust the telescopic stroke of the push rod 107, the clamps 108 clamp the battery module 102, and ensure that the upper end of the battery module 102 The tab body 103 is aligned with the pressing mechanism 200. The pressing mechanism 200 presses the upper end of the tab body 103 and welds it. After completing the welding of the upper end of the tab body 103, the flipping mechanism drives the clamp 108 to flip until the lower end of the battery module 102 The tab body 103 is flipped to align with the pressing mechanism 200. The pressing mechanism 200 presses the lower end of the tab body 103 and welds it. The extension stroke of the push rod 107 is adjusted, and the battery module body 102 is removed.

[0041] It is not difficult for those skilled in the art to see that the battery module tab welding device provided in this embodiment can complete the pressing and welding of multiple tab bodies 103 of the battery module body 102 without removing the battery module body 102, which greatly improves the welding efficiency of the tab body 103 and simplifies the operation process.

[0042] The upper tab body 103 described in this embodiment is also called the top tab body 103 , and the lower tab body 103 is also called the bottom tab body 103 .

[0043] The flipping mechanism may be implemented in other forms known in the art, such as by providing a motor or a hand crank on the bracket 104 that is torque-transmittingly connected to the clamping plate 108 .

[0044] Regarding the "pressing mechanism 200", there are words recorded in other technical documents that have the same meaning but express different meanings.

[0045] It is not difficult for a person skilled in the art to see that the battery module 102 may conflict with the support frame 101 when rotating. Therefore, when applying this embodiment, attention should be paid to reserving a flipping space on the battery module 102. For example, referring to Figure 1 In this embodiment, a frame-mounted battery module 102 is used to facilitate flipping of the battery module 102 .

[0046] Optionally, in other non-limiting embodiments of the present application, if the battery module 102 is provided with more than two tab bodies 103, the battery module tab welding device provided in this embodiment can still be used to flip the tab bodies 103 at different ends. The specific principle is referred to in this embodiment and will not be repeated here. Embodiment 2

[0047] This embodiment provides a battery module tab welding device, which is improved on the basis of the first embodiment to enhance the technical effect and refine the technical solution. For details not yet fully described, please refer to the first embodiment.

[0048] As one of the embodiments, the support mechanism 100 also includes a rotating shaft 105 passing through the bracket 104, the bracket 104 is rotatably supported and connected to the rotating shaft 105, the end of the rotating shaft 105 close to the supporting frame 101 is connected to the support groove 106 for torsion transmission support, the support groove 106 is connected to the splint 108 for torsion transmission support; the rotating shaft 105 is torsionally connected to the flipping mechanism.

[0049] The rotating shaft 105 is rotatably connected to the base 110 at the bottom of the bracket 104 by penetration, so that the outer wall of the rotating shaft 105 can be supported by the inner wall of the bracket 104. The setting of the supporting groove 106 helps to stabilize the support of the clamping plate 108.

[0050] Optionally, refer to Figure 4 The push rod 107 can be connected in series with the support groove 106 for support.

[0051] This embodiment also improves the flipping mechanism mentioned in the first embodiment. Figure 2 and Figure 3The flipping mechanism includes a transmission belt 113, a transmission rod 112 and a flipping motor 111; the two ends of the transmission belt 113 are respectively connected to the transmission rod 112 and the rotating shaft 105 for torque transmission, so as to realize the torque transmission connection between the transmission rod 112 and the rotating shaft 105, and the rotating shaft 105 is connected to the flipping motor 111 for torque transmission; the transmission belt 113 is distributed along the side of the flipping area of ​​the battery module body 102, and the flipping motor 111 is fixed to a position of the support frame 101 away from the work station to prevent conflict with the flipping area of ​​the battery module body 102.

[0052] Such a configuration helps to install the flip motor 111 at the most suitable position and can meet the requirement of a single flip motor 111 driving multiple rotating shafts 105. As one embodiment, the rotating shaft 105 is located at one end of the bracket 104 away from the clamping plate 108 and is connected to the belt 113 for torque transmission, and the flipping of the clamping plate 108 is driven by the rotation of the flip motor 111.

[0053] Based on the above, optionally, in a further but non-limiting embodiment of the present application, reference is made to Figure 2 and Figure 3 The flip motor 111 is a dual-axis motor, and the two ends of the flip motor 111 are respectively connected to the two rotating shafts 105 for torque transmission; at least two clamping plates 108 clamp the battery module body 102 from both sides, and each clamping plate 108 is connected to the rotating shaft 105 on the corresponding side for torque transmission.

[0054] As one embodiment, the flip motor 111 is centrally arranged at the bottom of the support frame 101 to avoid the flipping area of ​​the battery module body 102, and the flip motor 111 is parallel to the flipping axis of the battery module body 102. The rotating shafts 105 at both ends of the flip motor 111 are coaxially arranged, and the rotating shaft 105 is connected to the bottom rotation support of the support frame 101, and the two rotating shafts 105 extend to both sides of the support frame 101 respectively. The belt 113, the rotating shaft 105, the bracket 104, the support groove 106, the push rod 107, and the clamping plate 108 are also correspondingly provided with sleeves, distributed on both sides of the support frame 101, and the single belt 113 is distributed from top to bottom, and the lower end of the belt 113 is connected to the rotating shaft 105 on the corresponding side for torsion transmission, and the upper end of the belt 113 is connected to the rotating shaft 105 on the corresponding side for torsion transmission. When the flip motor 111 rotates, the rotating shafts 105 on both sides rotate synchronously to achieve the synchronous flipping of the clamping plates 108 on both sides.

[0055] In order to increase the friction between the batteries in the battery module 102 and reduce the probability of the battery module 102 being crushed, refer to Figure 3 and Figure 4 The clamping plate 108 is clamped along the arrangement direction of the battery module body 102, referring to Figure 5The planar shape of the clamping plate 108 matches the planar shape of the adjacent batteries in the battery module 102, and the force transmission direction of the push rod 107 is perpendicular to the clamping plate 108, thereby reducing the pressure on the battery module 102 per unit area and reducing the damage rate of the battery module 102.

[0056] Optionally, in a further but non-limiting embodiment of the present application, reference is made to Figure 5 A pressure sensor 109 is provided on the contact surface between the clamping plate 108 and the battery module 102. The pressure sensor 109 is used to determine the clamping force of the clamping plate 108 to ensure stable clamping of the battery module 102 and prevent the battery module 102 from being damaged due to excessive clamping force. Figure 4 and Figure 5 The shape of the clamping plate 108 is completely matched with the single battery in the battery module 102. When the clamping plate 108 clamps the battery module 102, the clamping plate 108 is clamped on both sides of the battery module 102 according to the arrangement of the batteries in the battery module 102.

[0057] Embodiment 1 mentions the pressing mechanism 200. Optionally, in a further but non-limiting embodiment of the present application, the pressing mechanism 200 includes a slide 201 mounted on the support frame 101. The position of the slide 201 corresponds to the tab body 103 at either end. The slide 201 is distributed along the arrangement direction of the battery module body 102.

[0058] The pressing mechanism 200 further includes a sliding block 202 slidably connected to the slide slot 201 . The sliding block 202 is installed with a pressing head assembly, and the pressing head assembly is used to assist in welding the tab body 103 .

[0059] Optionally, in this embodiment, the slide groove 201 is located at the top of the support frame 101 , and the slide groove 201 is distributed along the arrangement direction of the battery module 102 so that the pressing head assembly can press the tab body 103 of each battery in the battery module 102 respectively.

[0060] The pressure head assembly can be implemented in other forms known in the art, which will not be described in detail here.

[0061] refer to Figure 3 The pressing mechanism 200 further includes a stopper bolt 203, which is threadedly assembled on the sliding block 202, and the end of the stopper bolt 203 contacts the slide slot 201. The slide block 202 is fixed in the working position of the slide slot 201 by the stopper bolt 203.

[0062] refer to Figure 4As one embodiment, the pressing mechanism 200 also includes an L-shaped frame 204, which includes two arms connected to each other. One arm of the L-shaped frame 204 is connected to the side of the sliding block 202 away from the supporting frame 101, and the other arm of the L-shaped frame 204 is installed with a telescopic push rod 205, which is arranged toward the direction of the tab body 103. A welding groove 208 is installed at the end of the telescopic push rod 205. Through the telescopic movement of the telescopic push rod 205, the welding groove 208 can be pressed and contacted with the tab body 103. After the welding groove 208 is pressed and contacted with the tab body 103, the tab body 103 can be welded through the welding groove 208.

[0063] As one of the embodiments, two slide grooves 201 are arranged in parallel, the sliding blocks 202 of the two slide grooves 201 slide synchronously, two L-shaped frames 204 are arranged correspondingly and the openings are both facing the inside of the two slide grooves 201, and a lifting plate 206 is installed at the end of the telescopic push rod 205. The lifting plates 206 on both sides are connected to the same pressing plate 207, and the pressing plate 207 has a welding groove 208.

[0064] When pressing the tab body 103, both sides of the pressing plate 207 are pressed down by the telescopic push rod 205, so that the pressing plate 207 can be pressed down steadily to avoid tilting on one side. The number of welding grooves 208 opened on the pressing plate 207 can be adjusted according to actual conditions.

[0065] The telescopic push rod 205 and the push rod 107 can be implemented in other forms known in the art, such as setting the telescopic push rod 205 as an electric push rod, setting the telescopic push rod 205 as an electric telescopic push rod, and setting a PLC controller to be connected to the telescopic push rod 205, the push rod 107 and the pressure sensor 109 respectively by electrical signals, so as to facilitate the implementation of the automated control program.

[0066] The battery module tab welding device provided in this embodiment improves the technical effect and refines the technical solution compared with the first embodiment. Embodiment 3

[0067] This embodiment provides a battery module tab welding device, which is a similar solution to the first and second embodiments, but the names of some components are slightly different. The battery module tab welding device provided in this embodiment includes:

[0068] The support mechanism 100 includes a support frame 101, wherein a battery module 102 is mounted inside the support frame 101, and a plurality of tabs 103 are disposed at the upper and lower ends of the battery module 102, and clamping assemblies are disposed on both sides of the support frame 101, and a transmission assembly is disposed on one side of the two clamping assemblies;

[0069] The pressing mechanism 200 includes two slide grooves 201 relatively fixedly installed on the upper end of the support frame 101. The outer surfaces of the two slide grooves 201 are slidably connected with sliding blocks 202. The upper ends of the two sliding blocks 202 are fixedly installed with pressing head assemblies.

[0070] The clamping assembly includes two brackets 104 relatively fixedly installed on both sides of the support frame 101, and a rotating shaft 105 is rotatably penetrated inside the two brackets 104. Support grooves 106 are fixedly installed at the front ends of the two rotating shafts 105. The two support grooves 106 are rotatably connected to the support frame 101, and push rods 107 are fixedly installed inside the two support grooves 106.

[0071] A clamping plate 108 is fixedly mounted on the output ends of the two push rods 107 , and a pressure sensor 109 is fixedly mounted on the front ends of the two clamping plates 108 .

[0072] The transmission assembly includes a base 110 fixedly installed at the lower end of the support frame 101, a flip motor 111 is fixedly installed inside the base 110, transmission rods 112 are fixedly installed at both ends of the flip motor 111, and the outer surfaces of the two transmission rods 112 are rotatably connected to transmission belts 113, and the two transmission belts 113 are respectively rotatably connected to the two rotating shafts 105.

[0073] The pressing mechanism 200 further includes two limit bolts 203 respectively threadedly assembled on one side of the two sliding blocks 202 , and the front ends of the two limit bolts 203 are respectively in contact with the two sliding grooves 201 .

[0074] The pressure head assembly includes an L-shaped frame 204 fixedly installed on the upper ends of the two sliding blocks 202 respectively, and a telescopic push rod 205 is fixedly installed on the upper ends of the two L-shaped frames 204. The output ends of the two telescopic push rods 205 pass through the L-shaped frame 204, and a lifting plate 206 is fixedly installed on the end ends of the two lifting plates 206. A pressing plate 207 is fixedly installed on one side of the two lifting plates 206, and a welding groove 208 is fixedly installed between the two pressing plates 207.

[0075] The battery module tab welding device provided in this embodiment has similar technical effects as those of Embodiments 1 and 2, which will not be described in detail here. Embodiment 4

[0076] This embodiment provides a battery module tab welding device, which is improved on the basis of the third embodiment to enhance the technical effect and refine the technical solution. For any details not provided, please refer to the third embodiment.

[0077] The battery module tab welding device provided in this embodiment is

[0078] The supporting mechanism 100 includes a supporting frame 101, a battery module 102 is assembled inside the supporting frame 101, a plurality of tabs 103 are arranged at the upper and lower ends of the battery module 102, clamping assemblies are arranged on both sides of the supporting frame 101, and a transmission assembly is arranged on one side of the two clamping assemblies.

[0079] The clamping assembly includes two brackets 104 relatively fixedly installed on both sides of the support frame 101, and a rotating shaft 105 is rotatably penetrated inside the two brackets 104. Support grooves 106 are fixedly installed at the front ends of the two rotating shafts 105. The two support grooves 106 are rotatably connected to the support frame 101, and push rods 107 are fixedly installed inside the two support grooves 106.

[0080] A clamping plate 108 is fixedly mounted on the output ends of the two push rods 107 , and a pressure sensor 109 is fixedly mounted on the front ends of the two clamping plates 108 .

[0081] The transmission assembly includes a base 110 fixedly installed at the lower end of the support frame 101, a flip motor 111 is fixedly installed inside the base 110, transmission rods 112 are fixedly installed at both ends of the flip motor 111, and the outer surfaces of the two transmission rods 112 are rotatably connected to transmission belts 113, and the two transmission belts 113 are rotatably connected to the two rotating shafts 105 respectively.

[0082] As can be seen from the above, by placing the battery module 102 from above the support frame 101 into the support frame 101, the push rods 107 on both sides of the battery module 102 are started to expand through the PLC controller, thereby pushing the two clamping plates 108 to gradually approach the two sides of the battery module 102 and contact with it. A pressure sensor 109 is provided at the front end of each clamping plate 108. The clamping plate 108 contacts the battery module 102 to generate pressure. When the pressure sensor 109 detects that the pressure reaches the set value, it is fed back to the PLC controller to stop the expansion of the push rod 107. At this time, the two clamping plates 108 are respectively clamped on both sides of the battery module 102, and then the battery module is pressed. The battery module body 102 can be clamped to prevent the battery module body 102 from moving during the welding process and affecting the welding effect of the tab body 103. The pressure sensor 109 can sense the squeezing force between the clamping plate 108 and the battery module body 102, so as to prevent the battery module body 102 from being damaged due to excessive squeezing force and reduce the production quality of the battery module body 102. Secondly, by adjusting the unfolded length of the two push rods 107, the distance between the two clamping plates 108 can be adjusted, and then battery modules 102 of different sizes can be clamped and fixed, which is convenient for welding the tab body 103 of battery modules 102 of different sizes, thereby improving the applicability of the device.

[0083] After the battery module 102 is fixed by the clamping assembly, the pressing mechanism 200 is adjusted to align the pressing mechanism 200 with the upper end of the battery module 102, so as to facilitate welding of the upper end of the battery module 103. When all the upper end of the battery module 102 has been welded, the pressing mechanism 200 is released from the upper end of the battery module 102, and the flip motor 111 is started to drive the two transmission rods 112 to rotate at the same time, thereby driving the two transmission belts 113 to transmit at the same time, and then the two rotating shafts are rotated. 105 rotates simultaneously, thereby causing the clamping assembly to rotate, further driving the battery module body 102 to flip over, flipping the lower end to the upper side, thereby facilitating welding of the tab body 103 at the lower end of the battery module body 102. The position adjustment of the battery module body 102 is convenient and quick, and there is no need to disassemble the welding device, manually flip the battery module body 102, and then reassemble it inside the support frame 101 for welding. This can improve the welding efficiency of the tab body 103 of the battery module body 102, thereby improving the efficiency of battery module production.

[0084] Based on the above, the battery module tab welding device includes a pressing mechanism 200, including two slide grooves 201 relatively fixedly installed on the upper end of the support frame 101, the outer surfaces of the two slide grooves 201 are slidably connected with sliding blocks 202, and the upper ends of the two sliding blocks 202 are fixedly installed with a pressing head assembly.

[0085] The pressing mechanism 200 further includes two limit bolts 203 respectively threadedly assembled on one side of the two sliding blocks 202 , and the front ends of the two limit bolts 203 are respectively in contact with the two sliding grooves 201 .

[0086] The pressure head assembly includes an L-shaped frame 204 fixedly installed on the upper ends of the two sliding blocks 202 respectively, and telescopic push rods 205 are fixedly installed on the upper ends of the two L-shaped frames 204. The output ends of the two telescopic push rods 205 pass through the L-shaped frame 204, and a lifting plate 206 is fixedly installed on the end of each end. A pressing plate 207 is fixedly installed on one side of the two lifting plates 206, and a welding groove 208 is fixedly installed between the two pressing plates 207.

[0087] As can be seen from the above, by making the sliding block 202 slide on the slide groove 201, the position of the pressure head assembly is changed, the welding groove 208 is aligned with the pole ear body 103, and then the sliding block 202 is limited and fixed by the limit bolt 203, and the telescopic push rod 205 is started to push the lifting plate 206 down, thereby pushing the pressure plate 207 and the welding groove 208 down, so that the pressure plate 207 and the welding groove 208 are pressed and contacted with the pole ear body 103, thereby further pressing and limiting the battery module body 102 and the pole ear body 103, and welding the pole ear body 103 through the welding groove 208.

[0088] The battery module tab welding device provided in this embodiment improves the technical effect and refines the technical solution compared with the third embodiment.

[0089] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be understood as a limitation on the present invention.

[0090] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0091] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "provided at", "provided with", "located", "installed", "set", etc. 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, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. "Hinged" includes "rotational connection".

[0092] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A battery module tab welding device, characterized in that: include, A support mechanism (100) comprising a clamping plate (108) and a support frame (101) supported and connected to the clamping plate (108), wherein the clamping plate (108) is used to clamp a battery module body (102) in a station of the support frame (101); A flipping mechanism, the flipping mechanism is connected to the clamping plate (108) for torsion transmission; the battery module (102) comprises a tab body (103), the tab body (103) comprises at least a first end tab body and a second end tab body, the flipping mechanism is used to drive the battery module (102) to flip, and to exchange the relative positions of the different end tab bodies (103).

2. The battery module tab welding device according to claim 1, characterized in that: The support mechanism (100) further comprises a push rod (107) and a bracket (104); the support frame (101) is supported and connected to the bracket (104); the bracket (104) is rotationally supported and connected to the clamping plate (108) on one side facing the support frame (101); the push rod (107) is force-transmittingly connected to the clamping plate (108); the push rod (107) pushes the clamping plate (108) to clamp the battery module body (102) in a working position of the support frame (101).

3. The battery module tab welding device according to claim 2, characterized in that: The support mechanism (100) further comprises a rotating shaft (105) passing through the bracket (104); the bracket (104) is rotatably supported and connected to the rotating shaft (105); one end of the rotating shaft (105) close to the support frame (101) is connected to a support groove (106) for torque transmission support; the support groove (106) is connected to a support groove (106) for torque transmission support of the clamping plate (108); and the rotating shaft (105) is connected to the flipping mechanism for torque transmission.

4. The battery module tab welding device according to claim 3, characterized in that: The flipping mechanism comprises a transmission belt (113), a transmission rod (112) and a flipping motor (111); two ends of the transmission belt (113) are respectively connected to the transmission rod (112) and the rotating shaft (105) for torsion transmission, and the rotating shaft (105) is connected to the flipping motor (111) for torsion transmission; the transmission belt (113) is distributed along the side of the flipping area of ​​the battery module body (102), and the flipping motor (111) is fixed to a position of the support frame (101) away from the work station.

5. The battery module tab welding device according to claim 4, characterized in that: The flip motor (111) is a dual-axis motor, and the two ends of the flip motor (111) are respectively connected to the two rotating shafts (105) for torque transmission; at least two clamping plates (108) are clamped from both sides of the battery module body (102), and each clamping plate (108) is connected to the rotating shaft (105) on the corresponding side for torque transmission.

6. The battery module tab welding device according to claim 2, characterized in that: The clamping plate (108) is clamped along the arrangement direction of the battery module body (102), the planar shape of the clamping plate (108) matches the planar shape of adjacent batteries in the battery module body (102), and the force transmission direction of the push rod (107) is perpendicular to the clamping plate (108); A pressure sensor (109) is provided on the contact surface between the clamping plate (108) and the battery module body (102).

7. The battery module tab welding device according to any one of claims 1 to 6, characterized in that: It also includes a pressing mechanism (200), the pressing mechanism (200) being connected to the supporting mechanism (100), the pressing mechanism (200) comprising a slide groove (201) mounted on the supporting frame (101), the position of the slide groove (201) corresponding to the tab body (103) at either end, and the slide groove (201) being distributed along the arrangement direction of the battery module body (102); The pressing mechanism (200) further comprises a sliding block (202) slidably connected to the sliding groove (201), wherein a pressing head assembly is installed on the sliding block (202), and the pressing head assembly is used to assist in welding the tab body (103).

8. The battery module tab welding device according to claim 7, characterized in that: The pressing mechanism (200) further comprises a limit bolt (203), wherein the limit bolt (203) is threadedly assembled on the sliding block (202), and the end of the limit bolt (203) contacts the sliding groove (201).

9. The battery module tab welding device according to claim 7, characterized in that: The pressing mechanism (200) further comprises an L-shaped frame (204), wherein the L-shaped frame (204) comprises two arms connected to each other, wherein one arm of the L-shaped frame (204) is connected to a side of the sliding block (202) facing away from the supporting frame (101), and the other arm of the L-shaped frame (204) is provided with a telescopic push rod (205), wherein the telescopic push rod (205) is arranged in the direction of the tab body (103), and a welding groove (208) is provided at the end of the telescopic push rod (205), wherein the welding groove (208) is used for pressing and contacting the tab body (103).

10. The battery module tab welding device according to claim 9, characterized in that: Two slide grooves (201) are arranged in parallel, and the sliding blocks (202) of the two slide grooves (201) slide synchronously. Two L-shaped frames (204) are arranged correspondingly, and the openings of both are facing the inside of the two slide grooves (201). A lifting plate (206) is installed at the end of the telescopic push rod (205), and the lifting plates (206) on both sides are connected to the same pressing plate (207), and the pressing plate (207) is provided with the welding groove (208).

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