Laser welding device and battery packaging equipment

Abstract

The utility model is suitable for the technical field of battery manufacturing, and provides a laser welding device and battery packaging device.The laser welding device comprises a base, a first mounting beam, a first material taking assembly, a first driving unit, a second driving unit, a laser head, two first clamps and two second mounting beams; the first mounting beam, the second mounting beam, the first driving unit and the second driving unit are arranged on the base; the first material taking assembly is slidably arranged on the first mounting beam in the first direction. The first clamps are slidably arranged on the base in the second direction, and one first clamp is connected with the output end of the first driving unit; the other one is connected with the output end of the second driving unit, and the first driving unit and the second driving unit are used for driving the first clamp to slide in opposite directions; the second mounting beams are arranged on the two sides of the first mounting beam at intervals in the second direction, and the laser heads are arranged on the second mounting beams. According to the embodiment of the invention, a plurality of workpieces can be welded at the same time, so that the welding efficiency of the workpieces is improved.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a laser welding device and battery packaging equipment. Background Art

[0002] With the growth of the new energy vehicle market, the market demand for square power batteries, one of the core components of new energy vehicles, is also increasing rapidly.

[0003] During the manufacturing process of prismatic power batteries, the top cover of the battery needs to be welded to the battery casing to seal the battery. Currently, this is typically done using a laser welding device. However, because the laser welding device only has one fixture for securing the battery, it can only weld batteries on one fixture at a time. This results in low processing efficiency for the laser welding device, and consequently, low manufacturing efficiency for prismatic power batteries. Utility Model Content

[0004] The embodiments of the present application provide a laser welding device and a battery packaging device, which can improve the manufacturing efficiency of square power batteries.

[0005] In a first aspect, an embodiment of the present application provides a laser welding device, comprising:

[0006] base;

[0007] a first mounting beam, the first mounting beam being disposed on the base;

[0008] a first retrieving assembly, the first retrieving assembly comprising two groups of retrieving units, the retrieving units being slidably mounted on the first mounting beam along a first direction, the two groups of retrieving units being respectively disposed on both sides of the first mounting beam along a second direction;

[0009] Two first clamps, the first clamps being slidably disposed on the base along the second direction on the same straight line;

[0010] a first driving unit, wherein the first driving unit is disposed on the base, and a first clamp is connected to an output end of the first driving unit;

[0011] a second driving unit, the second driving unit being disposed on the base, another first clamp being connected to an output end of the second driving unit, the first driving unit and the second driving unit being configured to drive the corresponding first clamp to slide in opposite directions along the second direction;

[0012] two second mounting beams, the second mounting beams being disposed on the base, and the two second mounting beams being spaced apart on both sides of the first mounting beam along the second direction;

[0013] a laser head, the laser head being arranged on the second mounting beam;

[0014] The first direction and the second direction are perpendicular to each other in the plane where the base is located.

[0015] In some possible implementations of the first aspect, the laser welding device further includes:

[0016] At least two first slide rails, the first slide rails are arranged on the base, the length direction of the first slide rails is parallel to the second direction, and the first slide rails are arranged at intervals along the first direction; the first clamp is slidably arranged on the first slide rails, and the first drive unit, the second drive unit and the first slide rails are arranged in a one-to-one correspondence.

[0017] In some possible implementations of the first aspect, the laser welding device further includes:

[0018] A positioning assembly is provided on the second mounting beam, and is used for pressing the workpiece toward the base in an up-down direction.

[0019] In some possible implementations of the first aspect, the positioning component includes:

[0020] a third driving unit, the third driving unit being arranged on the second mounting beam;

[0021] a first mounting base connected to an output end of the third driving unit, wherein the third driving unit is configured to drive the first mounting base toward or away from the base in a vertical direction;

[0022] a first adapter, the first adapter being slidably disposed on the bottom of the first mounting seat along the second direction;

[0023] a first elastic member, wherein one end of the first elastic member is disposed on the first mounting seat, the other end of the first elastic member is disposed on the first adapter, and the extension and contraction direction of the first elastic member is parallel to the second direction;

[0024] a second adapter, the second adapter being slidably disposed on a bottom portion of the first adapter along the first direction;

[0025] A second elastic member, one end of the second elastic member is arranged on the first adapter, the other end of the second elastic member is arranged on the second adapter, and the expansion and contraction direction of the second elastic member is parallel to the first direction.

[0026] In some possible implementations of the first aspect, the positioning component further includes:

[0027] A pressing plate is detachably disposed at the bottom of the second adapter.

[0028] In some possible implementations of the first aspect, the positioning component further includes:

[0029] a third adapter, the third adapter being disposed at the bottom of the first mounting seat, the first adapter being slidably disposed at the bottom of the third adapter along the second direction, and an end portion of the first elastic member being disposed at the first mounting seat or the third adapter;

[0030] An adjusting member is connected to the first mounting seat and the third adapter, and is used to adjust the distance between the third adapter and the first mounting seat.

[0031] In some possible implementations of the first aspect, the laser welding device further includes:

[0032] a fourth driving unit, the fourth driving unit being disposed on the second mounting beam;

[0033] a second mounting base, the second mounting base being disposed at an output end of the fourth driving unit, the fourth driving unit being configured to drive the second mounting base toward or away from the base in an up-down direction;

[0034] a fifth driving unit, the fifth driving unit being disposed on the second mounting seat;

[0035] two first clamping jaws, wherein the first clamping jaws are arranged at an output end of the fifth driving unit, and the fifth driving unit is used to drive the two first clamping jaws to move toward or away from each other;

[0036] A positioning member is arranged on the second mounting seat.

[0037] In some possible implementations of the first aspect, the laser welding device further includes:

[0038] a third mounting beam, the third mounting beam being arranged on the base;

[0039] a rolling assembly, the rolling assembly being arranged on the third mounting beam and being used for rolling both sides of a workpiece;

[0040] a second clamp, the second clamp being slidably disposed on the base along the second direction, wherein the number of the second clamps on the same straight line in the second direction corresponds to the number of the first clamps on the same straight line in the second direction;

[0041] a sixth driving unit, the sixth driving unit being disposed on the base, the second clamp being connected to an output end of the sixth driving unit, and the sixth driving unit being configured to drive the second clamp to slide along the second direction;

[0042] The first mounting beam crosses the sliding track of the first clamp and the sliding track of the second clamp along the first direction, and the third mounting beam crosses the sliding track of the second clamp along the first direction.

[0043] In some possible implementations of the first aspect, the rolling assembly includes:

[0044] a first roller, the first roller being rotatably disposed on the third mounting beam;

[0045] The second roller is rotatably disposed on the third mounting beam, and the first roller and the second roller are spaced apart along the second direction.

[0046] In some possible implementations of the first aspect, the rolling assembly further includes:

[0047] at least two groups of seventh drive units, the seventh drive units being spaced apart and arranged on the third mounting beam along the first direction;

[0048] a fixed seat, the fixed seat being rotatably disposed on the third mounting beam, and the first roller or the second roller being rotatably disposed on the fixed seat;

[0049] A connecting rod, one end of which is rotatably connected to the output end of the seventh drive unit, and the other end of which is rotatably connected to the fixed base, wherein the seventh drive unit is used to drive the fixed base to rotate around the rotation center of the fixed base and the third mounting beam through the connecting rod to adjust the right angle between the rotation center line of the first roller or the second roller and the vertical plane where the second direction is located.

[0050] In some possible implementations of the first aspect, the laser welding device further includes:

[0051] a fourth mounting beam, the fourth mounting beam being disposed on the base and spanning a sliding track of the second fixture along the first direction;

[0052] A short-circuit test assembly is provided on the fourth mounting beam, and is used to detect whether the workpiece is short-circuited.

[0053] In some possible implementations of the first aspect, the laser welding device further includes:

[0054] a fifth mounting beam, the fifth mounting beam being disposed on the base and spanning a sliding track of the second fixture along the first direction;

[0055] An appearance detection component is slidably disposed on the fifth mounting beam along the first direction, and is used to detect whether the shape of the workpiece is qualified.

[0056] In some possible implementations of the first aspect, the appearance detection component includes:

[0057] a sliding seat, the sliding seat being slidably mounted on the fifth mounting beam along the first direction;

[0058] A plurality of visual units are provided on the sliding seat, and the detection directions of the visual units are adjustable.

[0059] In some possible implementations of the first aspect, the laser welding device further includes:

[0060] a sixth mounting beam, the sixth mounting beam being disposed on the base and spanning a sliding track of the second fixture along the first direction;

[0061] A second material-taking assembly is slidably arranged on the sixth mounting beam along the first direction.

[0062] In some possible implementations of the first aspect, the laser welding device further includes:

[0063] At least two second slide rails are provided on the base, the length direction of the second slide rails is parallel to the second direction, and the second slide rails are spaced apart along the first direction; the second clamp is slidably provided on the second slide rails.

[0064] In a second aspect, an embodiment of the present application provides a battery packaging device, which includes a laser welding device as described in any one of the above technical solutions.

[0065] The laser welding device and battery packaging equipment provided by the embodiments of the present application are characterized in that a material picking unit is slidably arranged on the first mounting beam along a first direction so as to grab a workpiece through the material picking unit, and after driving the workpiece to directly above the first fixture, the workpiece is placed on the first fixture so that the first fixture fixes the workpiece; the material picking unit is provided with two groups, and two first fixtures are provided so that the number of material picking units corresponds to the number of first fixtures, thereby enabling the two material picking units to simultaneously load workpieces onto the two first fixtures at a time, thereby improving the loading efficiency of the workpieces; the first driving unit and the second driving unit are used to drive the corresponding first fixtures to slide in opposite directions along the second direction so as to drive the two first fixtures to directly below the two laser heads on both sides of the first mounting beam along the second direction, thereby welding the workpieces through the laser heads; the first material picking assembly can place the workpieces on the two first fixtures respectively each time, and then drive the corresponding first fixtures to the corresponding laser heads for welding through the first driving unit and the second driving unit, so as to weld multiple workpieces at the same time, thereby improving the welding efficiency of the workpieces; the spatial layout of the first mounting beam, the second mounting beam, the first fixture, the first material picking assembly and the laser head is more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0067] Figure 1 This is a schematic structural diagram of an embodiment of a laser welding device of the present application;

[0068] Figure 2 for Figure 1 State diagram of the pick-up unit grabbing the workpiece;

[0069] Figure 3 for Figure 1 Schematic diagram of the structure of the positioning component;

[0070] Figure 4 for Figure 1 Schematic diagram of the structure of the middle protective cover removal and placement assembly;

[0071] Figure 5 for Figure 1 Schematic diagram of the structure of the middle roller pressing assembly;

[0072] Figure 6 for Figure 1 Schematic diagram of the installation structure of the medium and short circuit test component and the fourth mounting beam;

[0073] Figure 7for Figure 1 Schematic diagram of the installation structure of the middle appearance inspection component and the fifth mounting beam.

[0074] Description of Figure Numbers:

[0075] 1. Base; 2. First mounting beam; 3. First material picking assembly; 31. Material picking unit; 311. First driver; 312. Second driver; 313. Second clamp; 4. First fixture; 5. Second mounting beam; 6. Laser head; 7. First slide rail; 8. Positioning assembly; 81. Third driving unit; 82. First mounting seat; 83. First adapter; 84. First elastic member; 85. Second adapter; 86. Second elastic member; 87. Pressing plate; 88. Third adapter; 89. Adjusting member; 9. Protective cover pick-and-place assembly; 91. Fourth driving unit; 92. Second mounting seat; 93. Fifth driving unit; 94. 4. First clamp; 95. Positioning member; 10. Third mounting beam; 20. Rolling assembly; 201. First roller; 202. Second roller; 203. Seventh drive unit; 204. Fixed seat; 205. Connecting rod; 206. Dust removal unit; 207. Angle encoder; 30. Second fixture; 40. Short-circuit test assembly; 401. Eighth drive unit; 402. Mounting member; 403. Probe; 50. Fifth mounting beam; 60. Appearance inspection assembly; 601. Sliding seat; 602. Vision unit; 70. Sixth mounting beam; 80. Second picking assembly; 90. Second slide rail; 100. Fourth mounting beam.

[0076] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0077] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0078] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0079] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0080] It should be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0082] The embodiments of the present application provide a laser welding device and a battery packaging device for solving the technical problem of low manufacturing efficiency of square power batteries.

[0083] In the embodiments of this application, Figure 1 As shown, the laser welding device includes a base 1, a first mounting beam 2, a first material-picking assembly 3, a first drive unit, a second drive unit, a laser head 6, two first fixtures 4 and two second mounting beams 5. The first mounting beam 2, the second mounting beam 5, the first drive unit and the second drive unit are all arranged on the base 1. The first material-picking assembly 3 includes two groups of material-picking units 31, which are slidably arranged on the first mounting beam 2 along the first direction, and the two groups of material-picking units 31 are respectively arranged on both sides of the first mounting beam 2 along the second direction. The first fixture 4 is slidably arranged on the base 1 along the second direction on the same straight line, and one first fixture 4 is connected to the output end of the first drive unit. The other first fixture 4 is connected to the output end of the second drive unit, and the first drive unit and the second drive unit are used to drive the corresponding first fixture 4 to slide in opposite directions along the second direction. The two second mounting beams 5 are respectively spaced apart on both sides of the first mounting beam 2 along the second direction, and the laser head 6 is arranged on the second mounting beam 5.

[0084] The first direction and the second direction are perpendicular to each other in the plane where the base 1 is located.

[0085] like Figure 1 As shown, the first direction is parallel to the X direction, and the second direction is parallel to the Y direction.

[0086] In this embodiment, the workpiece can be a prismatic power battery. The pick-up unit 31 is used to grab the workpiece, the first fixture 4 is used to secure the workpiece, and the laser head 6 is used to emit a laser beam to weld the battery's top cover to the battery's housing. The laser head 6 can be slidably mounted on the second mounting beam 5 along a first direction to weld workpieces mounted on different first fixtures 4.

[0087] The two sets of pick-up units 31 are respectively arranged on both sides of the first mounting beam 2 along the second direction. The two first clamps 4 are slidably mounted on the base 1 along the second direction on the same straight line so that the positions of the pick-up units 31 and the first clamps 4 can correspond. Therefore, when the pick-up units 31 slide to the top of the first clamps 4, the two pick-up units 31 can place workpieces on the two first clamps 4 at the same time.

[0088] The process of laser welding workpieces is as follows:

[0089] The first picker assembly 3 first slides to the workpiece loading position, whereupon the picker unit 31 grabs the workpiece; this loading position can be a workpiece conveyor line. After the picker unit 31 grabs the workpiece, it slides directly above the first fixture 4, placing the workpieces grabbed by the two sets of picker units 31 onto the first fixture 4, thereby securing the workpieces. The first and second drive units then drive the corresponding first fixtures 4 to slide in opposite directions along the second direction until the first fixtures 4 slide below the laser head 6, at which point the laser head 6 emits a laser beam to weld the workpiece.

[0090] The picking unit 31 of the embodiment of the present application is slidably arranged on the first mounting beam 2 along the first direction, so as to grab the workpiece through the picking unit 31, and after driving the workpiece to the top of the first clamp 4, the workpiece is placed on the first clamp 4 so that the first clamp 4 fixes the workpiece; the picking unit 31 is provided with two groups, and the first clamp 4 is provided with two, so that the number of the picking units 31 corresponds to the number of the first clamps 4, thereby enabling the two picking units 31 to load the workpieces to the two first clamps 4 at the same time each time, so as to improve the loading efficiency of the workpiece; the first driving unit and the second driving unit are used to drive the corresponding first clamp 4 along the second direction Slide in opposite directions so as to drive the two first clamps 4 to the bottom of the two laser heads 6 on both sides of the first mounting beam 2 along the second direction, so as to weld the workpiece through the laser head 6; the first material picking component 3 can place the workpiece on the two first clamps 4 respectively at a time, and then drive the corresponding first clamps 4 to the corresponding laser head 6 for welding through the first driving unit and the second driving unit, so as to weld multiple workpieces at the same time, thereby improving the welding efficiency of the workpieces; the spatial layout of the first mounting beam 2, the second mounting beam 5, the first clamp 4, the first material picking component 3 and the laser head 6 is more compact.

[0091] In one embodiment, if Figure 1 As shown, multiple first fixtures 4 can be provided, such that the multiple first fixtures 4 are slidably mounted on the base 1 along the second direction and in a straight line. In other words, at least two first fixtures 4 are connected to the output of the first drive unit or the second drive unit, allowing for simultaneous welding of multiple workpieces. The number of first fixtures 4 provided can be determined based on the actual processing cycle.

[0092] In one embodiment, if Figure 1 and Figure 2 As shown, the material removal unit 31 includes a first driver 311, a second driver 312, and at least two second clamping jaws 313. The first driver 311 slides the first mounting beam 2 along a first direction. The second driver 312 is disposed at the output end of the first driver 311. The at least two second clamping jaws 313 are spaced apart at the two output ends of the second driver 312. The first driver 311 is used to drive the second driver 312 to move in the vertical direction, and the second driver 312 is used to drive the second clamping jaws 313 to move toward or away from each other to clamp or release the workpiece.

[0093] In one embodiment, if Figure 1 As shown, the laser welding device also includes at least two first slide rails 7, which are arranged on the base 1, the length direction of the first slide rails 7 is parallel to the second direction, and the first slide rails 7 are arranged at intervals along the first direction; the first clamp 4 is slidably arranged on the first slide rail 7, and the first drive unit, the second drive unit and the first slide rail 7 are arranged one by one.

[0094] Each first slide rail 7 is equipped with at least two first fixtures 4. This allows the first fixture 4 on one first slide rail 7 to be positioned below the laser head 6. This allows the laser head 6 to weld a workpiece on a first fixture 4 while simultaneously loading a workpiece onto the first fixture 4 on the other first slide rail 7. This allows the machining cycle of each workstation to be fully utilized, improving machining efficiency. The number of first slide rails 7 can be determined based on the machining cycle of each workstation.

[0095] In one embodiment, if Figure 1 As shown, the laser welding apparatus further includes a positioning assembly 8, which is mounted on the second mounting beam 5 and is used to press the workpiece vertically toward the base 1. This compression of the workpiece by the positioning assembly 8 improves the levelness of the workpiece's upper surface, thereby enhancing workpiece machining accuracy. It also prevents the workpiece from being suspended in the first fixture 4, which could affect subsequent workpiece machining accuracy.

[0096] In one embodiment, if Figure 1 and Figure 3As shown, the positioning assembly 8 includes a third drive unit 81, a first mounting seat 82, a first adapter 83, a first elastic member 84, a second adapter 85, and a second elastic member 86. The third drive unit 81 is mounted on the second mounting beam 5. The first mounting seat 82 is connected to the output end of the third drive unit 81, and the third drive unit 81 is used to drive the first mounting seat 82 toward or away from the base 1 in the vertical direction. The first adapter 83 is slidably mounted on the bottom of the first mounting seat 82 along the second direction. One end of the first elastic member 84 is mounted on the first mounting seat 82, and the other end of the first elastic member 84 is mounted on the first adapter 83. The direction of expansion and contraction of the first elastic member 84 is parallel to the second direction. The second adapter 85 is slidably mounted on the bottom of the first adapter 83 along the first direction. One end of the second elastic member 86 is mounted on the first adapter 83, and the other end of the second elastic member 86 is mounted on the second adapter 85. The direction of expansion and contraction of the second elastic member 86 is parallel to the first direction.

[0097] The third driving unit 81 is used to drive the first mounting seat 82 to approach or move away from the base 1 in the up and down directions, so as to drive the first adapter 83 and the second adapter 85 in sequence through the first mounting seat 82, so that the second adapter 85 can approach or move away from the base 1 in the up and down directions, so as to facilitate squeezing the workpiece toward the base 1 through the second adapter 85 to improve the levelness of the upper surface of the workpiece.

[0098] The first adapter 83 is slidably mounted on the bottom of the first mounting seat 82 along the second direction, and the second adapter 85 is slidably mounted on the bottom of the first adapter 83 along the first direction. This allows the first fixture 4 to push the workpiece to position it when the second adapter 85 presses against it. This prevents relative displacement between the upper surface of the workpiece and the second adapter 85 when the first fixture 4 pushes the workpiece to position it, thereby preventing friction between the second adapter 85 and the workpiece, which could cause scratches on the workpiece.

[0099] After the first fixture 4 pushes the workpiece to position so that the second adapter 85 moves with the workpiece, the first elastic member 84 is used to reset the displacement of the first adapter 83 in the second direction, and the second elastic member 86 is used to reset the displacement of the second adapter 85 in the first direction.

[0100] In one embodiment, the first fixture 4 includes two first pushing blocks and two second pushing blocks. The two first pushing blocks are spaced apart along a first direction, and the two second pushing blocks are spaced apart along a second direction. The two first pushing blocks can move toward or away from each other along the first direction, and the two second pushing blocks can move toward or away from each other along the second direction, so that the workpiece can be pushed by the first pushing blocks or the second pushing blocks to achieve positioning of the workpiece.

[0101] In one embodiment, if Figure 3As shown, the positioning assembly 8 also includes a pressure plate 87, which is detachably mounted on the bottom of the second adapter 85. Depending on the size of the workpiece, the pressure plate 87 can be replaced with a corresponding size to ensure that the size of the pressure plate 87 matches the workpiece. The horizontality of the lower surface of the pressure plate 87 can also be adjusted by replacing the pressure plate 87 with a corresponding thickness.

[0102] In one embodiment, if Figure 3 As shown, the positioning assembly 8 further includes a third adapter 88 and an adjustment member 89. The third adapter 88 is disposed at the bottom of the first mounting seat 82. The first adapter 83 is slidably disposed along the second direction at the bottom of the third adapter 88. The end of the first elastic member 84 is disposed on the first mounting seat 82 or the third adapter 88. The adjustment member 89 connects the first mounting seat 82 and the third adapter 88 and is used to adjust the distance between the third adapter 88 and the first mounting seat 82.

[0103] The distance between the third adapter 88 and the first mounting seat 82 is adjusted by the adjusting member 89 to adjust the levelness of the lower surface of the second adapter 85 , so that the second adapter 85 can better press the workpiece.

[0104] In this embodiment, the adjustment member 89 may be a screw that passes through the first mounting seat 82 and connects to the third adapter 88, so that the distance between the third adapter 88 and the first mounting seat 82 can be adjusted by the screw. The first adapter 83, the second adapter 85, and the third adapter 88 may all be plate-like structures. The first elastic member 84 and the second elastic member 86 may both be springs.

[0105] In one embodiment, if Figure 1 As shown, the laser welding device further includes a protective cover pick-up and placement assembly 9, which is used to pick up or put down the protective cover. The protective cover is used to cover the structure on the surface of the workpiece that needs to be protected to avoid being burned by the laser beam.

[0106] When the workpiece is a prismatic power battery, the protective cover pick-up assembly 9 is used to place the protective cover on the upper surface of the battery, covering the battery electrodes with the protective cover. The laser beam is then used to weld the battery, preventing the laser beam from burning the electrodes. After welding is completed, the protective cover pick-up assembly 9 picks up the protective cover and waits for the next battery to be welded.

[0107] In one embodiment, if Figure 1 and Figure 4As shown, the protective cover removal and placement assembly 9 includes a fourth drive unit 91, a second mounting base 92, a fifth drive unit 93, a positioning member 95, and two first clamping jaws 94. The fourth drive unit 91 is mounted on the second mounting beam 5. The second mounting base 92 is mounted at the output end of the fourth drive unit 91, and the fourth drive unit 91 is used to drive the second mounting base 92 toward or away from the base 1 in the vertical direction. The fifth drive unit 93 is mounted on the second mounting base 92, and the first clamping jaw 94 is mounted at the output end of the fifth drive unit 93, and the fifth drive unit 93 is used to drive the two first clamping jaws 94 toward or away from each other. The positioning member 95 is mounted on the second mounting base 92.

[0108] When the workpiece is brought directly below the first clamp 94 by the first fixture 4, the fourth drive unit 91 lowers the second mounting base 92. The fifth drive unit 93 then moves the two first clamps 94 apart, releasing the protective cover. The protective cover is then placed on the upper surface of the workpiece to cover the structure on the upper surface of the workpiece that needs to be protected. The fourth drive unit 91 then raises the second mounting base 92, allowing the laser beam to weld the workpiece.

[0109] After the laser beam completes welding the workpiece, the fourth drive unit 91 drives the second mounting base 92 downward. During this process, the positioning member 95 can be inserted into the corresponding positioning hole of the protective cover to complete the positioning of the protective cover. The fifth drive unit 93 then drives the two first clamping jaws 94 toward each other, allowing them to grasp the protective cover. The fourth drive unit 91 then drives the second mounting base 92 upward to await the arrival of the next workpiece to be welded.

[0110] In one embodiment, if Figure 1 and Figure 4 As shown, when at least two first fixtures 4 are connected to the output of the first drive unit or the second drive unit, the number of protective cover pick-up and placement assemblies 9 corresponds to the number of first fixtures 4 connected to the output of each first drive unit or the second drive unit. The spacing between two adjacent protective cover pick-up and placement assemblies 9 can be adjusted to allow for simultaneous placement and removal of protective covers from the upper surfaces of multiple workpieces.

[0111] In one embodiment, if Figure 1As shown, the laser welding device also includes a third mounting beam 10, a rolling assembly 20, a second clamp 30 and a sixth drive unit, and the third mounting beam 10 and the sixth drive unit are both arranged on the base 1. The rolling assembly 20 is arranged on the third mounting beam 10, and the rolling assembly 20 is used to roll both sides of the workpiece. The second clamp 30 is slidably arranged on the base 1 along the second direction, and the number of the second clamps 30 on the same straight line in the second direction corresponds one-to-one to the number of the first clamps 4 on the same straight line in the second direction. The second clamp 30 is connected to the output end of the sixth drive unit, and the sixth drive unit is used to drive the second clamp 30 to slide along the second direction. Among them, the first mounting beam 2 spans the sliding track of the first clamp 4 and the sliding track of the second clamp 30 along the first direction, and the third mounting beam 10 spans the sliding track of the second clamp 30 along the first direction.

[0112] After the laser head 6 completes welding the workpiece by emitting a laser beam, the first drive unit and the second drive unit respectively drive the corresponding first clamp 4 to slide in opposite directions, so that the first clamp 4 connected to the output end of the first drive unit and the first clamp 4 connected to the output end of the second drive unit are close to each other, making it easier for the first material picking component 3 to grab the welded workpiece.

[0113] Since the first mounting beam 2 spans the sliding track of the first fixture 4 and the sliding track of the second fixture 30 along the first direction, the first picker assembly 3 can drive the welded workpiece to directly above the second fixture 30, thereby placing the welded workpiece on the second fixture 30 and securing it with the second fixture 30. The sixth drive unit then drives the second fixture 30 to slide along the second direction, allowing the workpiece to pass through the rolling assembly 20, which flattens the weld seam on the side of the workpiece.

[0114] In this embodiment, the structure of the second clamp 30 may be the same as that of the first clamp 4 , and the number of the second clamps 30 may correspond to the number of the first clamps 4 in a one-to-one manner.

[0115] In one embodiment, if Figure 1 As shown, the third mounting beam 10 is located directly below the first mounting beam 2 .

[0116] In one embodiment, if Figure 1 and Figure 5 As shown, the rolling assembly 20 includes a first roller 201 and a second roller 202. The first roller 201 and the second roller 202 are both rotatably mounted on the third mounting beam 10, and the first roller 201 and the second roller 202 are spaced apart along the second direction. The sixth drive unit can drive the second clamp 30 to slide along the second direction, so that the workpiece on the second clamp 30 passes through the space between the first roller 201 and the second roller 202. The first roller 201 and the second roller 202 respectively press against opposite sides of the workpiece, thereby flattening the weld seam on the side of the workpiece.

[0117] In one embodiment, if Figure 1 and Figure 5 As shown, the rolling assembly 20 also includes a fixed base 204, a connecting rod 205, and at least two sets of seventh drive units 203. The seventh drive units 203 are spaced apart along the first direction on the third mounting beam 10. The fixed base 204 is rotatably mounted on the third mounting beam 10, and the first roller 201 or the second roller 202 is rotatably mounted on the fixed base 204. One end of the connecting rod 205 is rotatably connected to the output end of the seventh drive unit 203, and the other end of the connecting rod 205 is rotatably connected to the fixed base 204. The seventh drive unit 203 is used to drive the fixed base 204 to rotate about the rotation center of the fixed base 204 and the third mounting beam 10 via the connecting rod 205 to adjust the right angle between the rotation centerline of the first roller 201 or the second roller 202 and the vertical plane in the second direction. The seventh drive unit 203, the fixed base 204, and the connecting rod 205 are provided in a one-to-one correspondence.

[0118] The seventh driving unit 203 drives one end of the connecting rod 205, and then drives the fixed base 204 to rotate around the rotation center of the fixed base 204 and the third mounting beam 10 through the connecting rod 205, and the first roller 201 or the second roller 202 is rotatably arranged on the fixed base 204, so the angle between the rotation center line of the first roller 201 or the second roller 202 and the vertical plane where the second direction is located can be adjusted to better flatten the weld on the side of the workpiece.

[0119] In this embodiment, the middle position of the connecting rod 205 can be rotatably connected to the third mounting beam 10 so as to drive the fixing base 204 to rotate through the connecting rod 205 .

[0120] In one embodiment, if Figure 5 As shown, the rolling assembly 20 further includes a dust removal unit 206 . The dust removal unit 206 is disposed on the fixing seat 204 , and a dust removal port of the dust removal unit 206 faces the first roller 201 or the second roller 202 .

[0121] In one embodiment, if Figure 5 As shown, the rolling assembly 20 further includes an angle encoder 207, which is used to detect the right angle between the rotation center line of the first roller 201 or the second roller 202 and the vertical plane where the second direction is located.

[0122] In one embodiment, if Figure 1 and Figure 6As shown, the laser welding device further includes a fourth mounting beam 100 and a short-circuit test assembly 40. The fourth mounting beam 100 is disposed on the base 1 and spans the sliding track of the second fixture 30 along a first direction. The short-circuit test assembly 40 is disposed on the fourth mounting beam 100 and is used to detect whether a workpiece is short-circuited.

[0123] In one embodiment, if Figure 1 and Figure 6 As shown, the short circuit test assembly 40 includes an eighth drive unit 401, a mounting member 402, and a probe 403. The eighth drive unit 401 is disposed on the fourth mounting beam 100, and the mounting member 402 is disposed at the output end of the eighth drive unit 401. The eighth drive unit 401 is used to drive the mounting member 402 to rise and fall. The probe 403 is disposed on the mounting member 402.

[0124] The eighth driving unit 401 is used to drive the mounting member 402 to move up and down, so that the probe 403 contacts the electrode of the workpiece to perform a short circuit test on the workpiece.

[0125] In this embodiment, the installation position of the probe 403 on the installation member 402 is adjustable.

[0126] In one embodiment, if Figure 1 and Figure 7 As shown, the laser welding device further includes a fifth mounting beam 50 and an appearance detection assembly 60. The fifth mounting beam 50 is disposed on the base 1 and spans the sliding path of the second fixture 30 along a first direction. The appearance detection assembly 60 is slidably disposed on the fifth mounting beam 50 along the first direction and is used to detect whether the shape of the workpiece is qualified.

[0127] In one embodiment, if Figure 1 and Figure 7 As shown, the appearance detection assembly 60 includes a sliding seat 601 and a plurality of visual units 602. The sliding seat 601 is slidably mounted on the fifth mounting beam 50 along a first direction. The visual units 602 are mounted on the sliding seat 601, and the detection direction of the visual units 602 is adjustable.

[0128] The sliding seat 601 can drive the vision unit 602 to inspect different sides of the workpiece, and multiple vision units 602 can inspect different sides of the workpiece at the same time to improve the accuracy and efficiency of the inspection by the vision unit 602. The vision unit 602 can be a camera.

[0129] In one embodiment, if Figure 1As shown, the laser welding device further includes a sixth mounting beam 70 and a second material picking assembly 80. The sixth mounting beam 70 is disposed on the base 1. The sixth mounting beam 70 spans the sliding track of the second clamp 30 along the first direction, and the second material picking assembly 80 is slidably disposed on the sixth mounting beam 70 along the first direction.

[0130] After the workpiece is processed or inspected, the sixth driving unit drives the second fixture 30 to move to directly below the second picking assembly 80 so as to grab the workpiece from the second fixture 30 through the second picking assembly 80 to unload the workpiece.

[0131] In this embodiment, the structure of the second retrieving assembly 80 may be the same as that of the first retrieving assembly 3 .

[0132] In one embodiment, if Figure 1 As shown, the laser welding device also includes at least two second slide rails 90, which are arranged on the base 1, the length direction of the second slide rail 90 is parallel to the second direction, and the second slide rails 90 are arranged at intervals along the first direction; the second clamp 30 is slidably arranged on the second slide rail 90.

[0133] Each second rail 90 is equipped with at least two second fixtures 30. This allows the second fixtures 30 on one second rail 90 to pass through the roller assembly 20 to flatten the weld seam on the workpiece while simultaneously loading the workpiece onto the second fixture 30 on the other second rail 90. This effectively utilizes the processing cycle of each workstation to improve processing efficiency. The number of second rails 90 can be determined based on the processing cycle of each workstation.

[0134] In one embodiment, if Figure 1 and Figure 6 As shown, the fourth mounting beam 100 , the third mounting beam 10 , the fifth mounting beam 50 and the sixth mounting beam 70 are sequentially arranged along the second direction.

[0135] In addition, an embodiment of the present application also provides a battery packaging device, which includes a laser welding device. The specific structure of the laser welding device refers to the above embodiment. Since the battery packaging device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments.

[0136] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application description and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A laser welding device, characterized in that: The laser welding device comprises: base; a first mounting beam, the first mounting beam being disposed on the base; a first retrieving assembly, the first retrieving assembly comprising two groups of retrieving units, the retrieving units being slidably mounted on the first mounting beam along a first direction, the two groups of retrieving units being respectively disposed on both sides of the first mounting beam along a second direction; Two first clamps, the first clamps being slidably disposed on the base along the second direction on the same straight line; a first driving unit, wherein the first driving unit is disposed on the base, and a first clamp is connected to an output end of the first driving unit; a second driving unit, the second driving unit being disposed on the base, another first clamp being connected to an output end of the second driving unit, the first driving unit and the second driving unit being configured to drive the corresponding first clamp to slide in opposite directions along the second direction; two second mounting beams, the second mounting beams being disposed on the base, and the two second mounting beams being spaced apart on both sides of the first mounting beam along the second direction; a laser head, the laser head being arranged on the second mounting beam; The first direction and the second direction are perpendicular to each other in the plane where the base is located.

2. The laser welding device according to claim 1, wherein: The laser welding device further comprises: At least two first slide rails, the first slide rails are arranged on the base, the length direction of the first slide rails is parallel to the second direction, and the first slide rails are arranged at intervals along the first direction; the first clamp is slidably arranged on the first slide rails, and the first drive unit, the second drive unit and the first slide rails are arranged in a one-to-one correspondence.

3. The laser welding device according to claim 1, wherein: The laser welding device further comprises: A positioning assembly is provided on the second mounting beam, and is used for pressing the workpiece toward the base in an up-down direction.

4. The laser welding device according to claim 3, characterized in that The positioning component includes: a third driving unit, the third driving unit being arranged on the second mounting beam; a first mounting base connected to an output end of the third driving unit, wherein the third driving unit is configured to drive the first mounting base toward or away from the base in a vertical direction; a first adapter, the first adapter being slidably disposed on the bottom of the first mounting seat along the second direction; a first elastic member, wherein one end of the first elastic member is disposed on the first mounting seat, the other end of the first elastic member is disposed on the first adapter, and the extension and contraction direction of the first elastic member is parallel to the second direction; a second adapter, the second adapter being slidably disposed on a bottom portion of the first adapter along the first direction; A second elastic member, one end of the second elastic member is arranged on the first adapter, the other end of the second elastic member is arranged on the second adapter, and the expansion and contraction direction of the second elastic member is parallel to the first direction.

5. The laser welding device according to claim 4, characterized in that: The positioning component also includes: A pressing plate is detachably disposed at the bottom of the second adapter.

6. The laser welding device according to claim 4, wherein: The positioning component also includes: a third adapter, the third adapter being disposed at the bottom of the first mounting seat, the first adapter being slidably disposed at the bottom of the third adapter along the second direction, and an end portion of the first elastic member being disposed at the first mounting seat or the third adapter; An adjusting member is connected to the first mounting seat and the third adapter, and is used to adjust the distance between the third adapter and the first mounting seat.

7. The laser welding device according to claim 1, wherein: The laser welding device further comprises: a fourth driving unit, the fourth driving unit being disposed on the second mounting beam; a second mounting base, the second mounting base being disposed at an output end of the fourth driving unit, the fourth driving unit being configured to drive the second mounting base toward or away from the base in an up-down direction; a fifth driving unit, the fifth driving unit being disposed on the second mounting seat; two first clamping jaws, wherein the first clamping jaws are arranged at an output end of the fifth driving unit, and the fifth driving unit is used to drive the two first clamping jaws to move toward or away from each other; A positioning member is arranged on the second mounting seat.

8. The laser welding device according to claim 1, wherein: The laser welding device further comprises: a third mounting beam, the third mounting beam being arranged on the base; a rolling assembly, the rolling assembly being arranged on the third mounting beam and being used for rolling both sides of a workpiece; a second clamp, the second clamp being slidably disposed on the base along the second direction, wherein the number of the second clamps on the same straight line in the second direction corresponds to the number of the first clamps on the same straight line in the second direction; a sixth driving unit, the sixth driving unit being disposed on the base, the second clamp being connected to an output end of the sixth driving unit, and the sixth driving unit being configured to drive the second clamp to slide along the second direction; The first mounting beam crosses the sliding track of the first clamp and the sliding track of the second clamp along the first direction, and the third mounting beam crosses the sliding track of the second clamp along the first direction.

9. The laser welding device according to claim 8, wherein: The rolling assembly comprises: a first roller, the first roller being rotatably disposed on the third mounting beam; The second roller is rotatably disposed on the third mounting beam, and the first roller and the second roller are spaced apart along the second direction.

10. The laser welding device according to claim 9, wherein: The rolling assembly further comprises: at least two groups of seventh drive units, the seventh drive units being spaced apart and arranged on the third mounting beam along the first direction; a fixed seat, the fixed seat being rotatably disposed on the third mounting beam, and the first roller or the second roller being rotatably disposed on the fixed seat; A connecting rod, one end of which is rotatably connected to the output end of the seventh drive unit, and the other end of which is rotatably connected to the fixed base, wherein the seventh drive unit is used to drive the fixed base to rotate around the rotation center of the fixed base and the third mounting beam through the connecting rod to adjust the right angle between the rotation center line of the first roller or the second roller and the vertical plane where the second direction is located.

11. The laser welding device according to claim 8, wherein: The laser welding device further comprises: a fourth mounting beam, the fourth mounting beam being disposed on the base and spanning a sliding track of the second fixture along the first direction; A short-circuit test assembly is provided on the fourth mounting beam, and is used to detect whether the workpiece is short-circuited.

12. The laser welding device according to claim 8, wherein: The laser welding device further comprises: a fifth mounting beam, the fifth mounting beam being disposed on the base and spanning a sliding track of the second fixture along the first direction; An appearance detection component is slidably disposed on the fifth mounting beam along the first direction, and is used to detect whether the shape of the workpiece is qualified.

13. The laser welding device according to claim 12, wherein: The appearance detection component includes: a sliding seat, the sliding seat being slidably mounted on the fifth mounting beam along the first direction; A plurality of visual units are provided on the sliding seat, and the detection directions of the visual units are adjustable.

14. The laser welding device according to claim 8, wherein: The laser welding device further comprises: a sixth mounting beam, the sixth mounting beam being disposed on the base and spanning a sliding track of the second fixture along the first direction; A second material-taking assembly is slidably arranged on the sixth mounting beam along the first direction.

15. The laser welding device according to claim 8, wherein The laser welding device further comprises: At least two second slide rails are provided on the base, the length direction of the second slide rails is parallel to the second direction, and the second slide rails are spaced apart along the first direction; the second clamp is slidably provided on the second slide rails.

16. A battery packaging device, characterized in that: The battery packaging equipment includes the laser welding device according to any one of claims 1 to 15.

Images