Battery top cover welding machine

Abstract

The utility model provides a battery top cover welding machine which comprises a long edge area and a short edge area which are arranged adjacently, and a transfer mechanism is arranged between the long edge area and the short edge area. The long-edge area comprises a long-edge clamp return line, and a long-edge press-fitting shaping mechanism, a pre-welding gap detection mechanism, a long-edge welding mechanism, a long-edge post-welding detection mechanism and a long-edge welding seam rolling mechanism which are sequentially arranged along the conveying direction of the long-edge clamp return line, and a long-edge return clamp is configured on the long-edge clamp return line and is used for clamping a battery shell; the short-edge area comprises a short-edge clamp return line, and a short-edge press-fitting shaping mechanism, a short-edge welding mechanism, a short-edge post-welding detection mechanism and a short-edge welding seam rolling mechanism which are sequentially arranged along the conveying direction of the short-edge clamp return line, and a short-edge return clamp is configured on the short-edge clamp return line and is used for clamping a battery shell. According to the utility model, the battery shell is arranged in a partitioned manner, and the welding efficiency of the battery shell, particularly a battery top cover, can be effectively improved by respectively welding and shaping the long edges and the short edges.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery top cover welding machine. Background Art

[0002] like Figure 8 and Fig. 9 As shown, a certain type of battery casing 3 includes an outer shell and a top cover 32. Part of the structure of the top cover 32 is embedded in the outer shell. The top cover 32 is overlapped on the open end of the outer shell. A weld extension line 34 is formed at the joint between the top cover 32 and the outer shell, which is specifically a side seam. The top cover 32 is welded to the outer shell, and the weld is extended along the weld extension line 34. The existing battery top cover 32 side seam welding equipment is inefficient and cannot meet processing requirements. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a battery top cover welding machine, which welds the long side and the short side of the battery shell respectively, and the fixture reflow forms a production line, which can effectively improve the welding efficiency of the battery top cover.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A battery top cover welding machine comprises a long side area and a short side area arranged adjacent to each other, wherein a transfer mechanism is arranged between the two for transferring a battery shell between the long side area and the short side area; the long side area comprises a long side fixture return line, and a long side pressing and shaping mechanism, a pre-welding gap detection mechanism, a long side welding mechanism, a long side post-welding detection mechanism and a long side weld seam rolling mechanism are arranged in sequence along the conveying direction of the long side fixture return line, and a long side return fixture is arranged on the long side fixture return line for clamping the battery shell; the short side area comprises a short side fixture return line, and a short side pressing and shaping mechanism, a short side welding mechanism, a short side post-welding detection mechanism and a short side weld seam rolling mechanism are arranged in sequence along the conveying direction of the short side fixture return line, and a short side return fixture is arranged on the short side fixture return line for clamping the battery shell.

[0006] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0007] The utility model first loads the battery shell onto the long side reflow fixture, which moves under the action of the long side fixture reflow line, and passes through the long side pressing and shaping mechanism, the pre-welding gap detection mechanism, the long side welding mechanism, the long side post-welding detection mechanism and the long side weld seam rolling mechanism in sequence to complete the weld seam welding and shaping of the long side of the battery shell, and then transfers the battery shell to the short side reflow fixture on the short side area through the transfer mechanism, and under the drive of the short side fixture reflow line, the short side reflow fixture passes through the short side pressing and shaping mechanism, the short side welding mechanism, the short side post-welding detection mechanism and the short side weld seam rolling mechanism in sequence to complete the weld seam welding and shaping of the short side of the battery shell; by arranging the battery shell in zones and performing welding shaping of the long side and the short side respectively, the battery shell, specifically the welding efficiency of the battery top cover, can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0009] Figure 1 A schematic diagram of the top view of the battery top cover welding machine provided by an embodiment of the utility model;

[0010] Figure 2 A schematic diagram of the three-dimensional structure of a battery top cover welding machine provided by an embodiment of the utility model;

[0011] Figure 3 A three-dimensional structural diagram of a long side press-fitting shaping mechanism provided in an embodiment of the utility model;

[0012] Figure 4 A left-side structural schematic diagram of a long-side press-fit shaping mechanism provided in an embodiment of the utility model;

[0013] Figure 5 A schematic diagram of a three-dimensional structure of the correction mechanism and the long-side reflux fixture provided in an embodiment of the utility model;

[0014] Figure 6 A schematic diagram of the three-dimensional structure of the long side welding mechanism and the short side welding mechanism provided in the embodiment of the utility model;

[0015] Figure 7 A schematic diagram of the three-dimensional structure of a pre-weld gap detection mechanism, a long side post-weld detection mechanism and a short side post-weld detection mechanism provided in an embodiment of the utility model;

[0016] Figure 8 A schematic diagram of the three-dimensional structure of a battery housing provided in an embodiment of the present invention;

[0017] Fig. 9 A schematic diagram of a first spatial position structure of a roller and a battery housing provided in an embodiment of the present invention;

[0018] Fig.10 A schematic diagram of the second spatial position structure of the roller and the battery housing provided in an embodiment of the present invention;

[0019] Fig.11 A schematic diagram of the three-dimensional structure of a short-side weld rolling mechanism provided in an embodiment of the present invention;

[0020] Fig.12 A schematic diagram of the three-dimensional structure of a shaping portion provided by an embodiment of the present invention;

[0021] Fig.13 A schematic diagram of the three-dimensional structure of a rolling part provided in an embodiment of the present invention;

[0022] Fig.14 A schematic diagram of the explosion structure of a rolling part provided in an embodiment of the present invention;

[0023] Fig.15 A schematic diagram of a first three-dimensional structure of a clamping portion provided in an embodiment of the utility model and cooperating with a long-side reflux clamp;

[0024] Fig.16 A schematic diagram of the three-dimensional structure of the clamping portion provided in an embodiment of the utility model;

[0025] Fig.17 A second three-dimensional structural schematic diagram of a clamping portion provided in an embodiment of the utility model cooperating with a long-side reflux clamp;

[0026] Fig.18 A schematic diagram of the three-dimensional structure of a battery housing assembled with a long-side reflux fixture provided in an embodiment of the utility model;

[0027] Fig.19 A schematic diagram of the three-dimensional structure of the second top plate provided in an embodiment of the utility model;

[0028] Fig. 20 A schematic diagram of the three-dimensional structure of a battery flipping mechanism provided in an embodiment of the utility model;

[0029] Fig.21 A schematic diagram of the three-dimensional structure of the flip part provided in an embodiment of the utility model;

[0030] Fig. 22 A schematic diagram of the three-dimensional structure of a fixture plate provided in an embodiment of the utility model.

[0031] Icons: 1A-long side area, 1A1-long side pressing and shaping mechanism, 110-bracket, 1101-downward pressure lifting member, 1102-correction mechanism, 11021-correction push arm, 11022-fourth driving part, 11023-A zone pressure plate, 11024-locking puller, 1A2-pre-welding gap detection mechanism, 1A3-long side welding mechanism, 1A4-long side post-welding detection mechanism, 1A5-long side weld rolling mechanism, 1B-short side area, 1B1-short side pressing and shaping mechanism, 1B2-short side welding mechanism, 1B3-short side post-welding detection mechanism, 1B4-short side weld rolling mechanism, 1B5-battery flipping mechanism, 1C-transfer mechanism, 1C1-gantry, 1C2-mechanical gripper, 01-long side joint, 02-center point, 03-short side joint, 001-long side, 002-short side, 1-shaping part, 100-wheel frame, 1001-frame plate, 1002-rolling part, 1002a-axis hole, 1002b-adjusting slot, 10021-seat plate, 10022-dust suction joint, 10023-third limit plate, 10024-fork frame, 10025-wind shield, 10026-adjusting shaft, 10027-dust suction port, 10028-brush, 101-roller, 102-first driving member, 103-first frame, 1031-first top plate, 1032-middle plate, 1033-bottom plate, 11-first driving part, 12-second driving part , 13-third driving unit, 2-long side reflux fixture, 21-locking rod, 22-short side reflux fixture, 3-battery housing, 31-bottom shell, 310-battery side wall, 32-top cover, 33-R angle, 34-weld extension line, 35-protruding structure, 36-first substrate, 111-second top plate, 10-first mounting hole, 1110-second mounting hole, 120-first limit plate, 1201-first buffer head, 1202-first hard limit head, 130-second limit plate, 1301-second buffer head, 1302-second hard limit head, 4-first pressure plate, 41-first stopper, 42-first telescopic member, 5-second pressure plate, 51-second stopper, 52-second telescopic member, 6- The second substrate, 61-the third stopper, 62-the third telescopic member, 710-the first large surface, 711-the second large surface, X-the thickness direction of the battery, Y-the length direction of the battery, Z-the height direction of the battery, 8-the second frame, 81-the synchronous belt, 82-the flip part, 820-the accommodating cavity, 821-the flip plate, 822-the flip axis, 823-the fixture plate, 8231-the accommodating groove, 8232-the lateral positioning structure, 8233-the longitudinal positioning structure, 8234-the chamfered edge, 824-the second driving member, 825-the bearing seat, 83-the guide plate, 84-the fourth telescopic member, 85-the fourth limiting plate, W-the first direction, 91-the 3D camera, 92-the laser welding head, 921-the copper nozzle. DETAILED DESCRIPTION

[0032] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] Please refer to Figures 1 to 22 A battery top cover welding machine comprises a long side area 1A and a short side area 1B arranged adjacent to each other, with a transfer mechanism 1C arranged between the two for transferring a battery shell 3 between the long side area 1A and the short side area 1B; the long side area 1A comprises a long side fixture reflow line, and a long side pressing and shaping mechanism 1A1, a pre-welding gap detection mechanism 1A2, a long side welding mechanism 1A3, a long side post-welding detection mechanism 1A4 and a long side weld seam rolling mechanism 1A5 arranged in sequence along the conveying direction of the long side fixture reflow line, a long side reflow fixture 2 is arranged on the long side fixture reflow line for clamping the battery shell 3; the short side area 1B comprises a short side fixture reflow line, and a short side pressing and shaping mechanism 1B1, a short side welding mechanism 1B2, a short side post-welding detection mechanism 1B3 and a short side weld seam rolling mechanism 1B4 arranged in sequence along the conveying direction of the short side fixture reflow line, a short side reflow fixture 22 is arranged on the short side fixture reflow line for clamping the battery shell 3. In this embodiment, Figure 1As shown, both the long side fixture return line and the short side fixture return line can be magnetically driven circulation lines, which are used to drive the long side return fixture 2 to sequentially transport the battery shell 3 in the long side area 1A, and drive the short side return fixture 22 to cyclically transport the battery shell 3 in the short side area 1B. When in use, the battery housing 3 is first loaded onto the long side reflow fixture 2, and it moves under the action of the long side fixture reflow line, and passes through the long side pressing and shaping mechanism 1A1, the pre-welding gap detection mechanism 1A2, the long side welding mechanism 1A3, the long side post-welding detection mechanism 1A4 and the long side weld rolling mechanism 1A5 in sequence to complete the weld welding and shaping of the long side of the battery housing 3, and then the battery housing 3 is transferred to the short side reflow fixture 22 on the short side area 1B through the transfer mechanism 1C. Under the drive of the short side fixture reflow line, the short side reflow fixture 22 passes through the short side pressing and shaping mechanism 1B1, the short side welding mechanism 1B2, the short side post-welding detection mechanism 1B3 and the short side weld rolling mechanism 1B4 in sequence to complete the weld welding and shaping of the short side of the battery housing 3; by arranging the battery housing 3 in zones and performing welding shaping of the long side and the short side respectively, the welding efficiency of the battery housing 3, specifically the battery top cover 32, can be effectively improved.

[0036] In this embodiment, the transfer mechanism 1C includes a gantry 1C1 spanning the long side area 1A and the short side area 1B, and a linear module is provided on the gantry 1C1 for driving the mechanical gripper 1C2 to reciprocate between the long side area 1A and the short side area 1B to realize the transfer of the battery casing 3 between the long side area 1A and the short side area 1B.

[0037] like Figure 7 As shown, the pre-welding gap detection mechanism 1A2, the long side post-welding detection mechanism 1A4 and the short side post-welding detection mechanism 1B3 can all be the illustrated structures. Specifically, the linear module is arranged on the side of the long side fixture return line or the side of the short side fixture return line. The linear module is equipped with a 3D camera 91 for imaging and detecting the battery housing 3 before and after welding. Further, as Figure 7 As shown, the spatial position of the 3D camera 91 is adjusted by superimposing linear modules to achieve better shooting.

[0038] Of course, in other embodiments, the specific structure of the detection mechanism can be adjusted appropriately according to actual needs and is not limited to the following. Figure 7 The structure shown.

[0039] like Figures 3 to 5As shown, the long side press-fitting shaping mechanism 1A1 includes a bracket 110, which is located on the longitudinal upper side of the long side clamp return line, and an A-zone pressure plate 11023 is arranged on the bracket 110, and the A-zone pressure plate 11023 can be close to or away from the long side clamp return line in the longitudinal direction; the long side press-fitting shaping mechanism 1A1 also includes a correction mechanism 1102, and the correction mechanism 1102 is located on the longitudinal lower side of the bracket 110, and the two correction mechanisms 1102 are symmetrically arranged about the long side clamp return line; the correction mechanism 1102 includes a base, and at least one pair of correction push arms 11021 is movably arranged on the base, and the number of a pair of correction push arms 11021 is two, and the two are arranged opposite to each other; when the battery housing 3 is in the long side press-fitting shaping mechanism 1A1, the two correction push arms 11021 can approach or move away from each other to clamp or release the battery housing 3.

[0040] Before welding, the long side press-fitting shaping mechanism 1A1 is used to press-fit and correct the battery housing 3 after it is put into the shell, so that the bottom shell 31 and the top cover 32 fit tightly together, in preparation for subsequent welding. Figure 4 and Figure 5 As shown, when in use, the long side reflux fixture 2 releases the battery housing 3, and the two correction push arms 11021 move toward the battery housing 3 to correct the battery housing 3 clamp, and then the A zone pressure plate 11023 presses downward to the bottom shell 31 in the longitudinal direction, so that the top cover 32 and the end of the bottom shell 31 are tightly attached to each other as shown in FIG. Fig. 9 The structure shown completes the press-fit correction, and then the A-zone pressure plate 11023 is separated from the bottom shell 31 in the longitudinal direction, the long-side reflux fixture 2 presses and fixes the battery shell 3, the correction push arm 11021 is separated from the battery shell 3, and the long-side reflux fixture 2 moves to the next station for subsequent processing.

[0041] In this embodiment, a downward pressing lifting member 1101 is provided on the bracket 110 for driving the A-zone pressing plate 11023. The downward pressing lifting member 1101 may be a driving electric cylinder, or other telescopic members, including but not limited to a hydraulic cylinder or a pneumatic cylinder.

[0042] In this embodiment, the long side reflux fixture 2 is referenced from a square shell power battery top cover 32 welding fixture provided by the Chinese patent publication number CN220575101U, which will not be described in detail here. It should be noted that in this embodiment, the bracket 110 is provided with a locking puller 11024 for cooperating with the following example: Figure 4 and Figure 5The locking rod 21 shown realizes the locking or unlocking of the long side reflux clamp 2. Specifically, a fourth driving part 11022 is provided on the bracket 110, and the locking puller 11024 is installed on the bracket 110 through the fourth driving part 11022. Optionally, the fourth driving part 11022 is a telescopic part, including but not limited to a hydraulic cylinder, a pneumatic cylinder or an electric push rod. When in use, the locking puller 11024 is located at the lower side of the upper end of the locking rod 21 in the longitudinal direction. When the locking puller 11024 moves upward in the longitudinal direction, the upper end of the locking rod 21 can limit the locking puller 11024 to realize the locking of the long side reflux clamp 2.

[0043] In this embodiment, the short side press-fitting and shaping mechanism 1B1 is the same as the long side press-fitting and shaping mechanism 1A1, so as to realize the press-fitting correction of the battery housing 3 during the short side welding process, which will not be described in detail here.

[0044] like Figures 8 to 14 As shown, the short side weld seam rolling mechanism 1B4 includes a shaping part 1, which is arranged on the side of the short side reflow fixture 22. The shaping part 1 includes a wheel frame 100, a roller 101 and a first driving member 102. The roller 101 is rotatably mounted on the wheel frame 100, and the first driving member 102 acts on the wheel frame 100 so that the roller 101 has a movement tendency toward the battery side wall 310. Here, the roller 101 can roll the protruding structure 35 flat in the process of moving along the weld seam under the action of the first driving member 102, and the provided movement tendency can enable the roller 101 to continuously roll the protruding structure 35 within the range of the R angle 33 at the R angle 33, thereby ensuring the flatness of the weld seam, facilitating the assembly and use of the single battery formed by the battery housing 3 in the battery box, and preventing the protruding structure 35 from piercing the outer membrane of the battery housing 3.

[0045] In this embodiment, two shaping parts 1 are relatively arranged on two sides of the battery housing 3, which is beneficial to improving work efficiency.

[0046] Furthermore, the short side weld rolling mechanism 1B4 further includes a first frame 103, the wheel frame 100 is slidably connected to the first frame 103, and the first driving member 102 is used to drive the wheel frame 100 to slide relative to the first frame 103. Fig.11 and Fig.12 As shown, there are two rollers 101, which are arranged opposite to each other; the wheel frame 100 includes two frame plates 1001 arranged opposite to each other, the two frame plates 1001 are arranged corresponding to the two rollers 101, and the rollers 101 are rotatably mounted on the frame plates 1001 corresponding to them. The first driving member 102 is a telescopic member, the fixed end of the telescopic member is connected to one of the frame plates 1001, and the telescopic end of the telescopic member is connected to the other frame plate 1001. Preferably, the telescopic member is a cylinder. When in use, the cylinder contracts to drive the two frame plates 1001 arranged opposite to each other, so that the rollers 101 mounted on the frame plates 1001 have a tendency to move toward the battery side wall 310.

[0047] In this embodiment, two rollers 101 clamp the battery housing 3 , and the cylinder contracts to apply a pre-tightening force to the rollers 101 through the frame plate 1001 .

[0048] In some embodiments, the wheel frame 100 further includes a rolling portion 1002, the rolling portion 1002 is mounted on the frame plate 1001, and the roller 101 is mounted on the rolling portion 1002. Fig.13 and Fig.14 As shown, the rolling part 1002 includes a seat plate 10021 and a fork frame 10024, the seat plate 10021 is arranged on the frame plate 1001, two seat plates 10021 are arranged on each frame plate 1001, the fork frame 10024 is rotatably mounted between the two seat plates 10021, and the roller 101 is rotatably mounted on the fork frame 10024. Specifically, the seat plate 10021 is provided with an axial hole 1002a, the fork frame 10024 is provided with an adjustment shaft 10026, the adjustment shaft 10026 is penetrated in the axial hole 1002a, and the seat plate 10021 is provided with an adjustment slot 1002b, and the adjustment slot 1002b passes through the axial hole 1002a. The adjustment slot 1002b here can realize the deformation of the shaft hole 1002a, which is convenient for locking or loosening the adjustment shaft 10026 on the inner wall of the shaft hole 1002a, so as to adjust the angle between the fork frame 10024, that is, the rotating shaft of the roller 101 and the battery side wall 310.

[0049] In some embodiments, a third limiting plate 10023 is disposed on the top of the seat plate 10021. The third limiting plate 10023 is used to limit the extreme position of the fork frame 10024 to prevent it from being over-adjusted.

[0050] Furthermore, a dust suction port 10027 is provided through the bottom of the fork frame 10024, and a brush 10028 is mounted on the fork frame 10024. The working end of the brush 10028 extends to the side wall of the roller 101, and the dust suction port 10027 is connected to the working end of the brush 10028, and the dust suction port 10027 is connected to a negative pressure source (not shown in the figure). When in use, the working end of the brush 10028 can sweep the metal debris on the roller 101 during the rotation of the roller 101 to ensure that there is no metal impurities on the surface of the roller 101, thereby ensuring the rolling quality, and the generated metal debris is removed from the dust suction port 10027 by the negative pressure source.

[0051] In this embodiment, a dust suction connector 10022 is provided on the fork frame 10024. The dust suction connector 10022 is located on the side of the dust suction port 10027 away from the roller 101, and is used to connect to a negative pressure source through a pipeline.

[0052] Furthermore, in order to improve the collection capacity of metal debris, such as Fig.13 and Fig.14As shown, a windshield 10025 is provided on the fork frame 10024, and the windshield 10025 is located on the side of the dust suction port 10027 close to the roller 101, and extends from the dust suction port 10027 to the roller 101. The windshield 10025 cooperates with the fork frame 10024 structure to achieve the sealing of the area between the roller 101 and the dust suction port 10027, which is conducive to the formation of negative pressure in the area, thereby facilitating the removal effect of metal debris swept by the brush 10028.

[0053] In this embodiment, the first frame 103 includes a first top plate 1031, a middle plate 1032 and a bottom plate 1033 which are arranged in sequence from top to bottom along the longitudinal direction. The frame plate 1001 is slidably installed on the first top plate 1031. The first top plate 1031 is slidably connected to the middle plate 1032. The sliding direction of the first top plate 1031 relative to the middle plate 1032 is perpendicular to the sliding direction of the frame plate 1001 relative to the first top plate 1031. Both the first top plate 1031 and the middle plate 1032 can move toward the battery housing 3. Here, the frame plate 1001 is slidably connected to the first top plate 1031 via a slide rail and a slider structure, and the first top plate 1031 and the middle plate 1032 are slidably connected via a slide rail and a slider structure. The middle plate 1032 is provided with a second driving unit 12, specifically a cylinder, for driving the first top plate 1031 to move relative to the middle plate 1032 toward the battery housing 3, and the bottom plate 1033 is provided with a third driving unit 13, specifically a linear module, for driving the middle plate 1032 to move relative to the bottom plate 1033 toward the battery housing 3.

[0054] like Fig.11 As shown, in this embodiment, a first driving unit 11 is further included, specifically a linear module, which is used to drive the shaping unit 1 to move on one side of the short-side reflow fixture 22 to adjust the spatial position of the shaping unit 1 .

[0055] This embodiment also provides a battery processing device, including a loading mechanism (not shown in the figure), a unloading mechanism (not shown in the figure) and the above-mentioned short side weld rolling mechanism 1B4, the loading mechanism is located on the loading side of the short side weld rolling mechanism 1B4, and the unloading mechanism is located on the unloading side of the short side weld rolling mechanism 1B4. The battery processing device can improve the quality of the battery, the processed monomers are convenient to assemble in the battery box, the gap between the monomer batteries is small, which is conducive to improving the energy density of the battery pack.

[0056] The short side weld seam rolling mechanism 1B4 performs weld seam shaping based on the aforementioned battery side seam welding seam shaping method.

[0057] like Figure 8-10 As shown, this embodiment also provides a battery side seam welding seam shaping method, which uses the aforementioned short side weld seam rolling mechanism 1B4 to perform weld seam shaping, including the following steps:

[0058] Step S1: On one of the battery side walls 310 of the battery housing 3, the roller 101 is brought into contact with the protruding structure 35 on the weld, and a pre-tightening force is applied to the roller 101 toward the battery side wall 310 so that the roller 101 has a movement tendency toward the battery side wall 310;

[0059] Step S2: driving the roller 101 to roll along the weld on the battery side wall 310 to within the R angle 33 of the weld end.

[0060] like Fig. 9 and Fig.10 As shown, after the roller 101 has a pre-tightening force toward the battery side wall 310, it can roll the protruding structure 35 while the roller 101 rolls along the weld, so as to roll the protruding structure 35 flat, so as to avoid the protruding structure 35 occupying space on the side of the battery shell 3. At the same time, in this embodiment, the roller 101 rolls to the range of the R angle 33. Since the roller 101 has a movement tendency toward the corresponding battery side wall 310, the roller 101 still has the ability to roll the protruding structure 35 flat within the range of the R angle 33, so as to roll the protruding structure 35 within the range of the R angle 33, and the protruding structure 35 at the transition position between the R angle 33 and the battery side wall 310, which can effectively reduce the risk of the protruding structure 35 puncturing the membrane. Specifically, as Fig.10 As shown, the roller 101 has a tendency to move rightward. After the roller 101 moves downward to within the range of the R angle 33, the movement of the roller 101 is a combination of downward and rightward movement. That is, after controlling the roller 101 to move downward, the roller 101 can move along the contour of the R angle 33 to fully roll out the raised structure 35 in the R angle 33 area.

[0061] It should be noted that the R angle 33 area can be partially or completely rolled flat according to actual needs. Fig.10 As shown, in some embodiments, the raised structures 35 in all battery side walls 310 may be rolled first, and then the raised structures 35 in the R-corner 33 region may be rolled separately; or after rolling the raised structures 35 in one of the battery side walls 310 to the R-corner 33, the raised structures 35 in the R-corner 33 region may be directly entered to roll the raised structures 35 in the R-corner 33 region.

[0062] like Fig.10 As shown, the battery in this embodiment is a square shell battery, and the weld between the top cover 32 and the bottom shell 31 is located inside the battery side wall 310 and includes a pair of long sides 001 and a pair of short sides 002, and the R angle 33 area connects the adjacent long sides 001 and short sides 002.

[0063] In some embodiments, before step S1, the following steps are also included:

[0064] Step S01 : The roller 101 is brought into contact with the long side 001 or the short side 002 , and the roller 101 is driven to move along the long side 001 or the short side 002 to the R corner 33 close to the end of the long side 001 or the R corner 33 close to the end of the short side 002 .

[0065] The long side 001 and the short side 002 account for the vast majority of the weld, and the pressure consistency of the roller 101 during the rolling process is high. Therefore, the roller 101 is easy to adjust during the rolling of the long side 001 and the short side 002 separately, which is conducive to improving the efficiency of the weld rolling. Then, step S1 and step S2 are performed near the R angle 33 of the long side 001 or the short side 002. Since the battery side wall 310 near the R angle 33 of the long side 001 and the short side 002 has a higher rigidity, the risk of deformation of the battery housing 3 when the preload force is applied is lower. Therefore, when step S01, step S1 and step S2 are performed in sequence, the efficiency of the rolling weld can be improved while ensuring that the structure of the battery housing 3 is not deformed.

[0066] It should be noted that, in step S2, the rolling area of ​​the roller 101 at least covers the boundary points of the rolling area of ​​the roller 101 in step S01.

[0067] like Fig.10 As shown, the junction point between the long side 001 and the R corner 33 is defined as the long side junction point 01, the junction point between the short side 002 and the R corner 33 is defined as the short side junction point 03, and the R corner 33 is divided into two equal parts by the middle point 02. In some embodiments, the following steps are also included after step S2:

[0068] Step S31: When the roller 101 enters the R angle 33 from the long side 001, the starting point of the roller 101 is defined as the long side starting point, and the roller 101 rolls back and forth in the area between the center point 02 and the long side starting point; when the roller 101 enters the R angle 33 from the short side 002, the starting point of the roller 101 is defined as the short side starting point, and the roller 101 rolls back and forth in the area between the center point 02 and the short side starting point.

[0069] In another embodiment, step S2 further includes the following steps:

[0070] Step S00: When the roller 101 enters the R angle 33 from the long side 001, the starting point of the roller 101 is defined as the long side starting point; when the roller 101 enters the R angle 33 from the short side 002, the starting point of the roller 101 is defined as the short side starting point. In the adjacent long side 001 and short side 002, the roller 101 reciprocates in the area between the short side starting point and the long side starting point; or the roller 101 rolls at least once in one direction from the short side starting point to the long side starting point; or the roller 101 rolls at least once in one direction from the long side starting point to the short side starting point. Reciprocating rolling or at least one rolling ensures the welding seam rolling shaping effect.

[0071] like Fig. 9 As shown, the angle between the rotating shaft of the roller 101 and the battery side wall 310 is α, 0°≤α≤15°. The specific angle between the rotating shaft of the roller 101 and the battery side wall 310 is adjusted according to actual needs to ensure the rolling effect.

[0072] In some embodiments, during the unidirectional movement of the roller 101 from the battery side wall 310 into the R angle 33 area, the preload force gradually increases. Fig.10 As shown, when the roller 101 enters the R angle 33 area from the long side 001, the original preload force may be insufficient for the roller 101 to roll to the right due to the effect of the R angle 33 structure. Therefore, when entering the R angle 33 area, the force value is continuously increased in the direction of the original preload force to ensure the rolling shaping effect.

[0073] In this embodiment, the rolling speed of the roller 101 gradually decreases as the roller 101 moves from the battery side wall 310 into the R angle 33 area. Due to the influence of the R angle 33 structure, the roller 101 speed is reduced to prevent slipping and ensure the rolling effect.

[0074] In this embodiment, there are two rollers 101, and the two rollers 101 correspond to the two oppositely disposed battery side walls 310 one by one. In the extension direction of the weld on the battery side wall 310, the two rollers 101 move synchronously; when the rollers 101 enter the R angle 33 range from the battery side wall 310, the distance between the two rollers 101 gradually decreases. Specifically, a group of oppositely disposed long sides 001 or short sides 002 are rolled at the same time, which is conducive to improving the rolling efficiency. At the same time, the pre-tightening forces of the two oppositely disposed rollers 101 are in opposite directions, thereby ensuring the stability of the battery housing 3 clamping.

[0075] It should be noted that the roller 101 and the battery housing 3 are in relative motion, that is, the battery housing 3 can be fixed to drive the roller 101 to move relative to the battery housing 3; the roller 101 can also be fixed to drive the battery housing 3 to move relative to the roller 101; or both the battery housing 3 and the roller 101 can move.

[0076] In this embodiment, the long side weld rolling mechanism 1A5 has the same structure as the short side weld rolling mechanism 1B4, and only a single roller 101 may be used as required, which will not be described in detail herein.

[0077] like Figures 15 to 19 The long side welding mechanism 1A3 includes a welding portion and a clamping portion, the welding portion is arranged on the side of the long side fixture return line, and the clamping portion is at the longitudinal top of the long side fixture return line; the clamping portion includes a second top plate 111, a first substrate 36, a second substrate 6, a first pressing plate 4 and a second pressing plate 5, wherein: the second top plate 111 is at the longitudinal top of the long side fixture return line, the first substrate 36 is fixedly mounted on the second top plate 111, and is arranged close to the first large surface 710 of the battery housing 3; the second substrate 6 is adjustably mounted on the first large surface 710 of the battery housing 3; The second top plate 111 is arranged close to the first large surface 710 of the battery shell 3; the first pressing plate 4 is adjustably mounted on the second top plate 111, and is arranged close to the second large surface 711 of the battery shell 3. The first pressing plate 4 corresponds to the first substrate 36 and is arranged close to the end of the top cover 32 in the length direction; the second pressing plate 5 is adjustably mounted on the second top plate 111, and is arranged close to the second large surface 711 of the battery shell 3. The second pressing plate 5 corresponds to the second substrate 6 and is arranged close to the middle of the top cover 32 in the length direction. In this embodiment, the rigidity of the large surface of the battery casing 3, that is, the end position of the bottom shell 31 close to the top cover 32 in the length direction is large, while the rigidity of the middle position is small. Here, the first substrate 36 and the first pressing plate 4 are arranged at the end of the bottom shell 31 close to the top cover 32 in the length direction, and the second substrate 6 and the second pressing plate 5 are arranged at the middle position of the bottom shell 31 close to the top cover 32 in the length direction. This can adapt to the situation that the deformation of the bottom shell 31 in the length direction of the top cover 32 is not uniform, so as to flexibly adjust the distance between the first substrate 36 and the first pressing plate 4, and the distance between the second substrate 6 and the second pressing plate 5 as needed to adjust the gap between the top cover 32 and the bottom shell 31, thereby ensuring the welding quality of the battery casing 3 and improving the sealing of the battery casing 3.

[0078] The first substrate 36 here is fixedly connected to the second top plate 111 and serves as a reference surface, while the second substrate 6 located in the middle of the length direction of the top cover 32 adopts an adjustable assembly method to cooperate with the second pressure plate 5 to better shape and adjust the first large surface 710 of the battery shell 3, that is, the bottom shell 31.

[0079] In some embodiments, the number of the second substrate 6 and the second pressing plate 5 is at least one, that is, according to actual needs, the second substrate 6 and the second pressing plate 5 can be two or three or a combination of other numbers.

[0080] like Fig.15 and 18As shown, the long side reflow fixture 2 is used to carry the battery housing 3, and is used to limit the battery housing 3 in the length direction Y of the battery and the height direction Z of the battery; the first pressing plate 4 cooperates with the first substrate 36, and the second pressing plate 5 cooperates with the second substrate 6 to limit and shape the battery housing 3 in the thickness direction X of the battery, so as to completely limit the battery housing 3 in space, which is convenient for welding. In this embodiment, the second top plate 111 is arranged opposite to the long side reflow fixture 2, and the first substrate 36, the second substrate 6, the first pressing plate 4 and the second pressing plate 5 are extended along the height direction Z of the battery toward the long side reflow fixture 2, which is conducive to the arrangement of welding equipment such as a laser welding mechanism, and is conducive to the welding equipment to perform side seam welding on the battery without interference.

[0081] In this embodiment, the first pressing plate 4, the second pressing plate 5 and the second base plate 6 are all slidably connected to the second top plate 111; the first pressing plate 4, the second pressing plate 5 and the second base plate 6 can be close to or away from the battery housing 3. Fig.16 As shown, preferably, the second top plate 111 is slidably connected to the first pressure plate 4, the second pressure plate 5 and the second base plate 6 through a slide rail and a slider structure. In this embodiment, the slide rail is installed on the second top plate 111, and the slider is installed on the first pressure plate 4, the second pressure plate 5 and the second base plate 6. The slide rail is extended along the thickness direction X of the battery.

[0082] like Fig.15 and Fig.19 As shown, the second top plate 111 is penetrated by a first mounting hole 10 and a second mounting hole 1110, wherein: a first stopper 41 is provided on the first pressing plate 4, the first stopper 41 passes through the first mounting hole 10, a first telescopic member 42 is provided on a side surface of the second top plate 111 away from the long edge reflux fixture 2, and the telescopic end of the first telescopic member 42 is connected to the first stopper 41; a second stopper 51 is provided on the second pressing plate 5, the second stopper 51 passes through the second mounting hole 1110, a second telescopic member 52 is provided on a side surface of the second top plate 111 away from the long edge reflux fixture 2, and the telescopic end of the second telescopic member 52 is connected to the second stopper 51; a third stopper 61 is provided on the second substrate 6, the third stopper 61 passes through the second mounting hole 1110, a third telescopic member 62 is provided on a side surface of the second top plate 111 away from the long edge reflux fixture 2, and the telescopic end of the third telescopic member 62 is connected to the third stopper 61. Optionally, the first telescopic member 42, the second telescopic member 52 and the third telescopic member 62 include but are not limited to a cylinder, a hydraulic cylinder or an electric push rod. The stopper cooperates with the telescopic member to drive the pressure plate and the second base plate 6. Here, the telescopic member and the stopper are arranged on the side of the second top plate 111 away from the long side reflow fixture 2 to release the space on the side of the second top plate 111 facing the long side reflow fixture 2, so as to avoid interference with the welding equipment.

[0083] like Fig.17As shown, a first limiting plate 120 is provided on one side of the second top plate 111 away from the long side reflux fixture 2, and a first limiting head is provided on the first limiting plate 120, and the first limiting head is arranged opposite to the first stopper 41. The first limiting head here is used to limit the first stopper 41, that is, to limit the first pressing plate 4, to prevent it from over-pressing the battery housing 3.

[0084] Specifically, the first limit head includes a first buffer head 1201 and a first hard limit head 1202, and the first buffer head 1201 is closer to the first stopper 41 than the first hard limit head 1202. When in use, the first stopper 41 first contacts the first buffer head 1201, and the first pressing plate 4 continues to approach the battery housing 3 to compress the first buffer head 1201 and then abuts against the first hard limit head 1202 to limit the limit position of the first pressing plate 4.

[0085] like Fig.17 As shown, a second limit plate 130 is provided on one side of the second top plate 111 away from the long side reflow fixture 2, and the second limit plate 130 is between the second stop block 51 and the third stop block 61; a second limit head corresponding to the second limit plate 130 is provided on both the second stop block 51 and the third stop block 61. The second buffer head 1301 here is the same as the first buffer head 1201, and the second hard limit head 1302 is the same as the first hard limit head 1202. In this embodiment, the second stop block 51 and the third stop block 61 have the same appearance and are in the shape of a "J". The second buffer head 1301 and the second hard limit head 1302 are correspondingly arranged at the bottom of the second stop block 51 and the third stop block 61, the telescopic end of the second telescopic member 52 is connected to the top of the second stop block 51, and the telescopic end of the third telescopic member 62 is connected to the top of the third stop block 61.

[0086] like Figure 6 As shown, the long side welding mechanism 1A3 and the short side welding mechanism 1B2 can be Figure 6 As shown in the structure, specifically, the laser welding head 92 realizes spatial position adjustment by superimposing a linear module or a slide rail slider structure, so that the copper nozzle 921 of the laser welding head 92 can adjust the distance between it and the battery shell 3, specifically the battery top cover 32, according to the working conditions.

[0087] Of course, in other embodiments, the specific structure of the welding mechanism can be adjusted appropriately according to actual needs and is not limited to the following. Figure 6 In this embodiment, the long side welding mechanism 1A3 is the aforementioned welding part.

[0088] like Figure 20 to Figure 22As shown, the battery top cover welding machine also includes a battery flip mechanism 1B5, which is arranged at the end of the path of the short side fixture return line conveying the battery shell 3; the battery flip mechanism 1B5 includes: a second frame 8; a synchronous belt 81, which is arranged on the second frame 8 and is used to transport the battery shell 3 from the short side fixture return line along the first direction W; a flip part 82, which is arranged on the second frame 8, and the flip part 82 includes a second driving member 824 and a flip shaft 822 rotatably mounted on the second frame 8, and the axial direction of the flip shaft 822 is aligned with the first direction W. The flip shaft 822 is not parallel, and a receiving part is provided on the flip shaft 822. The receiving part is provided with a receiving cavity 820 for receiving the battery housing 3. The second driving part 824 is used to drive the flip shaft 822 to rotate so that the receiving part switches between the upper material position and the lower material position. When the receiving part is in the upper material position, the opening end of the receiving cavity 820 faces the upstream side of the first direction W; when the receiving part is in the lower material position, the opening end of the receiving cavity 820 faces the downstream side of the first direction W. When the receiving part is in the upper material position and the lower material position, the synchronous belt 81 can extend into the receiving cavity 820. Fig. 20 As shown, in this embodiment, the extension direction of the synchronous belt 81 is the first direction W. When in use, the accommodating member is first rotated to the loading position through the flip shaft 822. At this time, the synchronous belt 81 transports the battery shell 3 from the open end of the accommodating chamber 820 to the accommodating chamber 820. Then, the second driving member 824 drives the flip shaft 822 to rotate so that the accommodating member switches from the loading position to the unloading position. During the process, the open end of the accommodating chamber 820 gradually rises in the longitudinal direction, and the battery shell 3 in the accommodating chamber 820 is separated from the synchronous belt 81. The open end of the accommodating chamber 820 rises to the highest point and then gradually It gradually lowers to the open end of the accommodating chamber 820 toward the downstream side of the first direction W. At this time, the battery shell 3 in the accommodating chamber 820 contacts the synchronous belt 81, and the synchronous belt 81 transports the battery shell 3 from the open end of the accommodating chamber 820 out of the accommodating chamber 820, so that the battery shell 3 can be flipped during the transportation process, which is beneficial to improving production efficiency; the battery shell 3 is non-poweredly limited during the flipping process by the accommodating chamber 820. Compared with the traditional mechanical fixing method, there is no risk of pinching the battery shell 3 or causing it to deform, which can greatly improve the product yield of the battery shell 3.

[0089] like Fig. 20 and Fig.21 As shown, W1 is the upstream side of the first direction W, and W2 is the downstream side of the first direction W.

[0090] like Fig.21As shown, the accommodating member includes two flip plates 821 arranged in a mirror image, the flip plates 821 are fixedly installed on the flip shaft 822, the accommodating chamber 820 is in the area between the two flip plates 821, and the synchronous belt 81 is between the two flip plates 821; a longitudinal positioning structure 8233 and at least two lateral positioning structures 8232 are arranged on the flip plates 821, and when the accommodating member is in the upper material position and the lower material position, the longitudinal positioning structure 8233 is arranged close to the flip shaft 822, and in the longitudinal direction, the battery housing 3 is between the at least two lateral positioning structures 8232, and at least part of the synchronous belt 81 is higher than the lateral positioning structure 8232 close to the synchronous belt 81; in the axial direction of the flip shaft 822, the distance between the two corresponding lateral positioning structures 8232 on the two flip plates 821 is smaller than the size of the battery housing 3.

[0091] It should be noted that, in the axial direction of the turning shaft 822 , the width of the synchronous belt 81 is smaller than the size of the battery housing 3 .

[0092] Preferably, the axial direction of the flip axis 822 is perpendicular to the first direction W.

[0093] Preferably, there are two lateral positioning structures 8232 and one longitudinal positioning structure 8233, and the lateral positioning structure 8232 is located between the two lateral positioning structures 8232; when the container is in the upper position and the lower position, in the longitudinal direction, the minimum distance between the two lateral positioning structures 8232 is greater than the size of the battery housing 3.

[0094] When in use, the synchronous belt 81 transports the battery housing 3 to the accommodating cavity 820, that is, between the two lateral positioning structures 8232. Fig.21 As shown, when the accommodating part rotates from the upper material position to the lower material position, the battery housing 3 first contacts the lateral positioning structure 8232 at the lower side at the upper material position, and then the accommodating part rotates counterclockwise under the action of the flip shaft 822. During the process, due to the gradual inclination of the lateral positioning structure 8232 at the lower side, the battery housing 3 slides down and abuts against the longitudinal positioning structure 8233 on the side close to the flip shaft 822. After the opening end of the accommodating cavity 820 passes the highest point, the battery housing 3 slides relative to the longitudinal positioning structure 8233 until it abuts against the lateral positioning structure 8232 on the upper side when the accommodating part is in the upper material position, that is, in the longitudinal direction, the positions of the two lateral positioning structures 8232 at the upper material position and the lower material position are interchanged, and then the accommodating part reaches the lower material position, the battery housing 3 abuts against the synchronous belt 81, and under the action of the synchronous belt 81, moves out of the accommodating cavity 820 from the outlet end of the accommodating cavity 820 along the first direction W to complete the flipping of the battery housing 3.

[0095] Optionally, the longitudinal positioning structure 8233 is the first surface, and the lateral positioning structure 8232 is the second surface. Preferably, both the first surface and the second surface are planes. In other embodiments, the first surface and the second surface may also be curved surfaces.

[0096] like Fig.21 and Fig. 22 As shown, a jig plate 823 is provided on the flip plate 821, and a receiving groove 8231 is provided on the jig plate 823. The longitudinal positioning structure 8233 and the lateral positioning structure 8232 are both groove walls of the receiving groove 8231. The jig plate 823 here can be detachably mounted on the flip plate 821 by bolts or screws. In this way, the jig plate 823 can be easily replaced to adapt to the use of different types of battery housings 3.

[0097] In this embodiment, Fig.21 As shown, on the same flip plate 821, both ends thereof are provided with a fixture plate 823. This can improve the flipping efficiency of the battery housing 3. Specifically, when the flip shaft 822 rotates one circle, the same container can realize the flipping of two battery housings 3.

[0098] Furthermore, in order to improve efficiency, at least two accommodating members are provided on the flip shaft 822 at intervals along the axial direction thereof. Accordingly, the battery flip mechanism 1B5 includes at least two synchronous belts 81 corresponding to the at least two accommodating members.

[0099] In this embodiment, a chamfered edge 8234 is provided on the groove wall of the accommodating groove 8231; the chamfered edge 8234 is arranged opposite to the longitudinal positioning structure 8233; when the accommodating member is in the loading position, the chamfered edge 8234 is arranged close to the upstream side of the first direction W. The chamfered edge 8234 here facilitates the battery housing 3 to enter the accommodating cavity 820 from the open end of the accommodating cavity 820.

[0100] In this embodiment, the battery flipping mechanism 1B5 further includes a bearing seat 825 , which is disposed on the second frame 8 , and the flipping shaft 822 is rotatably mounted on the bearing seat 825 .

[0101] like Fig. 20 As shown, the battery flip mechanism 1B5 further includes a guide plate 83, which is movably disposed on the side of the synchronous belt 81. Preferably, there are two guide plates 83, and the two guide plates 83 are symmetrically disposed about the synchronous belt 81. When in use, the guide plate 83 is disposed on the upstream side of the first direction W, specifically, the upstream side of the flip portion 82, and the posture of the battery housing 3 is corrected before the battery housing 3 enters the accommodating cavity 820 so that the battery housing 3 is aligned with the opening end of the accommodating cavity 820.

[0102] Preferably, the guide plate 83 is slidably connected to the second frame 8. Specifically, a slide rail is provided on the second frame 8, and the slide rail is extended along the axial direction of the flip shaft 822, and a slider adapted to the slide rail is provided on the guide plate 83. The second frame 8 is also provided with a fourth telescopic member 84 for driving the guide plate 83 to slide relative to the synchronous belt 81. The fourth telescopic member 84 includes but is not limited to a cylinder, an electric push rod and a hydraulic cylinder.

[0103] In some embodiments, the battery flipping mechanism 1B5 also includes a fourth limit plate 85, and there are two fourth limit plates 85, which are arranged on the second frame 8. The two fourth limit plates 85 are symmetrically arranged about the synchronous belt 81. The fourth limit plate 85 is on the downstream side of the flipping part 82, and is used to straighten the battery shell 3 that is separated from the accommodating cavity 820 at the unloading position, so as to facilitate the subsequent transportation of the battery shell 3.

[0104] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A battery top cover welding machine, characterized in that: It comprises a long side area (1A) and a short side area (1B) which are arranged adjacent to each other, and a transfer mechanism (1C) is arranged between the two for transferring the battery housing (3) between the long side area (1A) and the short side area (1B); The long side area (1A) comprises a long side fixture return line, and a long side pressing and shaping mechanism (1A1), a pre-welding gap detection mechanism (1A2), a long side welding mechanism (1A3), a long side post-welding detection mechanism (1A4) and a long side weld seam rolling mechanism (1A5) arranged in sequence along the conveying direction of the long side fixture return line; a long side return fixture (2) is arranged on the long side fixture return line for clamping the battery housing (3); The short side area (1B) comprises a short side fixture return line, and a short side pressing and shaping mechanism (1B1), a short side welding mechanism (1B2), a short side post-weld detection mechanism (1B3) and a short side weld seam rolling mechanism (1B4) arranged in sequence along the conveying direction of the short side fixture return line. A short side return fixture (22) is arranged on the short side fixture return line for clamping the battery housing (3).

2. The battery top cover welding machine according to claim 1, characterized in that: The long side press-fitting shaping mechanism (1A1) comprises a bracket (110), the bracket (110) is located on the longitudinal upper side of the long side fixture return line, and an A zone pressing plate (11023) is provided on the bracket (110), and the A zone pressing plate (11023) can be moved closer to or farther away from the long side fixture return line in the longitudinal direction; The long side press-fitting shaping mechanism (1A1) further comprises a correction mechanism (1102), wherein the correction mechanism (1102) is located at the longitudinal lower side of the bracket (110), and the two correction mechanisms (1102) are symmetrically arranged about the long side fixture return line; The correction mechanism (1102) comprises a base, on which at least one pair of correction push arms (11021) are movably arranged, and the number of the pair of correction push arms (11021) is two, and the two are arranged opposite to each other; When the battery housing (3) is in the long-side press-fitting shaping mechanism (1A1), the two correction push arms (11021) can move closer to or farther from each other to clamp or release the battery housing (3).

3. The battery top cover welding machine according to claim 1, characterized in that: The short-side weld rolling mechanism (1B4) comprises a shaping part (1), the shaping part (1) being arranged on the side of the short-side reflow fixture (22), the shaping part (1) comprising a wheel frame (100), a roller (101) and a first driving member (102), the roller (101) being rotatably mounted on the wheel frame (100), and the first driving member (102) acting on the wheel frame (100) so that the roller (101) has a tendency to move toward the battery side wall (310).

4. The battery top cover welding machine according to claim 3, characterized in that: The short-side weld rolling mechanism (1B4) further comprises a first frame (103), the wheel frame (100) being slidably connected to the first frame (103), and the first driving member (102) being used to drive the wheel frame (100) to slide relative to the first frame (103); There are two rollers (101), which are arranged opposite to each other; The wheel frame (100) comprises two frame plates (1001) arranged opposite to each other, the two frame plates (1001) are arranged corresponding to the two rollers (101), and the rollers (101) are rotatably mounted on the frame plates (1001) corresponding thereto.

5. The battery top cover welding machine according to claim 4, characterized in that: The wheel frame (100) further comprises a seat plate (10021) and a fork frame (10024); the seat plate (10021) is arranged on the frame plate (1001); two seat plates (10021) are arranged on each frame plate (1001); the fork frame (10024) is rotatably mounted between the two seat plates (10021); and the roller (101) is rotatably mounted on the fork frame (10024); A dust suction port (10027) is provided through the bottom of the fork frame (10024); a windshield (10025) is provided on the fork frame (10024); the windshield (10025) is located on a side of the dust suction port (10027) close to the roller (101), and extends from the dust suction port (10027) toward the roller (101).

6. The battery top cover welding machine according to claim 1, characterized in that: The long side welding mechanism (1A3) comprises a welding portion and a clamping portion, wherein the welding portion is arranged on the side of the long side clamp return line, and the clamping portion is located at the longitudinal top of the long side clamp return line; The clamping portion comprises: A second top plate (111) located at the longitudinal top of the long side fixture return line; A first substrate (36) is fixedly mounted on the second top plate (111) and is disposed close to a first large surface (710) of the battery housing (3); A second substrate (6) is adjustably mounted on the second top plate (111) and is disposed close to one side of the first large surface (710) of the battery housing (3); A first pressing plate (4) is adjustably mounted on the second top plate (111) and is disposed close to a side of the second large surface (711) of the battery housing (3); the first pressing plate (4) corresponds to the first base plate (36) and is disposed close to an end portion of the top cover (32) in the length direction; A second pressing plate (5) is adjustably mounted on the second top plate (111) and is disposed close to a side of the second large surface (711) of the battery housing (3); the second pressing plate (5) corresponds to the second base plate (6) and is disposed close to the middle of the top cover (32) in the length direction.

7. The battery top cover welding machine according to claim 6, characterized in that: The first pressing plate (4), the second pressing plate (5) and the second base plate (6) are all slidably connected to the second top plate (111); The first pressing plate (4), the second pressing plate (5) and the second substrate (6) can all be close to or away from the battery housing (3); The second top plate (111) is provided with a first mounting hole (10) and a second mounting hole (1110), wherein: A first stopper (41) is provided on the first pressing plate (4), and the first stopper (41) passes through the first mounting hole (10); a first telescopic member (42) is provided on a side surface of the second top plate (111) facing away from the long-side reflux fixture (2), and a telescopic end of the first telescopic member (42) is connected to the first stopper (41); A second stopper (51) is provided on the second pressing plate (5), and the second stopper (51) passes through the second mounting hole (1110); a second telescopic member (52) is provided on a side surface of the second top plate (111) facing away from the long-side reflux fixture (2), and a telescopic end of the second telescopic member (52) is connected to the second stopper (51); A third stopper (61) is provided on the second substrate (6), and the third stopper (61) passes through the second mounting hole (1110); a third telescopic member (62) is provided on a side surface of the second top plate (111) facing away from the long-side reflux fixture (2), and a telescopic end of the third telescopic member (62) is connected to the third stopper (61).

8. The battery top cover welding machine according to claim 1, characterized in that: It also includes a battery flipping mechanism (1B5), wherein the battery flipping mechanism (1B5) is arranged at the end of a path for the short side clamp return line to convey the battery housing (3); The battery flipping mechanism (1B5) includes: A second frame (8); a synchronous belt (81), arranged on the second frame (8), and used for conveying the battery casing (3) from the short side fixture return line along a first direction (W); A flipping part (82) is arranged on the second frame (8), the flipping part (82) comprises a second driving member (824) and a flipping shaft (822) rotatably mounted on the second frame (8), the axial direction of the flipping shaft (822) is not parallel to the first direction (W), a receiving member is arranged on the flipping shaft (822), a receiving cavity (820) for receiving the battery housing (3) is opened on the receiving member, and the second driving member (824) is used to drive the flipping shaft (822) to rotate so that the receiving member switches between an upper material position and a lower material position; When the accommodating component is in the loading position, the opening end of the accommodating cavity (820) faces the upstream side of the first direction (W); when the accommodating component is in the unloading position, the opening end of the accommodating cavity (820) faces the downstream side of the first direction (W); when the accommodating component is in the loading position and the unloading position, the synchronous belt (81) can extend into the accommodating cavity (820).

9. The battery top cover welding machine according to claim 8, characterized in that: The accommodating member comprises two flip plates (821) arranged in a mirror image, the flip plates (821) are fixedly mounted on the flip shaft (822), the accommodating cavity (820) is located in the area between the two flip plates (821), and the synchronous belt (81) is located between the two flip plates (821); The flip plate (821) is provided with a longitudinal positioning structure (8233) and at least two lateral positioning structures (8232); when the accommodating member is at the upper material position and the lower material position, the longitudinal positioning structure (8233) is arranged close to the flip shaft (822); in the longitudinal direction, the battery housing (3) is located between the at least two lateral positioning structures (8232); and at least part of the synchronous belt (81) is higher than the lateral positioning structure (8232) close to the synchronous belt (81); In the axial direction of the flip axis (822), the distance between the two corresponding lateral positioning structures (8232) on the two flip plates (821) is smaller than the size of the battery housing (3).

10. The battery top cover welding machine according to claim 9, characterized in that: The longitudinal positioning structure (8233) is the first surface, and the lateral positioning structure (8232) is the second surface.

Images