Multidirectional laser welding equipment for solid-state battery module and use method

Abstract

The invention discloses multi-directional laser welding equipment for a solid-state battery module and a using method, and relates to the technical field of laser welding equipment, the multi-directional laser welding equipment comprises an annular track and a sliding assembly, a first groove and a second groove are formed in the two sides of the outer wall of the annular track, and a first sliding way is arranged on the side face of the inner wall of the first groove; a second sliding way is arranged on the side face of the inner wall of the second groove, and sliding assemblies are arranged on the outer wall of the first sliding way and the outer wall of the second sliding way. By installing the circular ring track and the sliding assembly, the multi-position and multi-direction welding requirement is met, the movement flexibility and the welding range of the manipulator are improved, the position of the manipulator does not need to be manually adjusted, the automation degree and the welding efficiency are improved, and the problems that in traditional welding equipment, the manipulator is fixed in position, limited in welding range and poor in welding effect are solved. And the efficiency is low due to the fact that the workpiece and equipment positions need to be manually and frequently adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser welding equipment, in particular to a multi-directional laser welding equipment for solid-state battery modules and a use method thereof. BACKGROUND

[0002] With the rapid development of the new energy industry, the production and manufacturing precision and efficiency of battery modules are increasingly improved. As a key link to ensure the structural stability and electrical performance of battery modules, the welding process directly affects the product quality. At present, in terms of the movement of the mechanical hand, the position adjustment of the mechanical hand of the traditional equipment mainly relies on manual operation or fixed trajectory driving, which is difficult to flexibly adapt to the multi-site welding requirements of battery modules of different specifications, and the movement precision is insufficient, which limits the operation range.

[0003] Patent CN114054951B discloses a welding device of a new energy battery pack automatic laser welding machine, which improves the energy conversion efficiency during welding and facilitates better welding.

[0004] The above-mentioned patent sets two laser welding guns, the laser welding gun on the left side preheats the welding position of the battery pack component to be welded, and after preheating, the laser welding gun on the right side welds the battery pack component to be welded, so that the energy conversion efficiency during welding is improved, and better welding is facilitated. However, there is still room for optimization in the multi-site welding of battery modules of different specifications.

[0005] Therefore, the present application provides a multi-directional laser welding equipment for solid-state battery modules and a use method thereof, which can realize multi-site and multi-directional welding. SUMMARY

[0006] The present application aims to provide a multi-directional laser welding equipment for solid-state battery modules and a use method thereof, to solve the technical problem that the position adjustment of the mechanical hand of the traditional equipment mainly relies on manual operation or fixed trajectory driving, which is difficult to flexibly adapt to the multi-site welding requirements of battery modules of different specifications.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a multi-directional laser welding equipment for solid-state battery modules, comprising a circular track and a sliding assembly, the outer wall of the circular track is provided with a first groove and a second groove on both sides, the inner wall side of the first groove is provided with a first sliding way, the inner wall side of the second groove is provided with a second sliding way, and the outer wall of the first sliding way and the second sliding way is provided with a sliding assembly;

[0008] The sliding assembly comprises a base, a first servo motor, a first rotating shaft, a first pulley and a second servo motor.

[0009] The outer wall side of the first servo motor is connected to a first rotating shaft, the first rotating shaft passes through the outer wall side of the base and is connected to the first pulley, the outer wall side of the second servo motor is connected to a second rotating shaft, the second rotating shaft passes through the other side of the outer wall of the base and is connected to the second pulley.

[0010] Preferably, a tensioning assembly is provided inside the base;

[0011] The tensioning assembly includes: a driving motor, a screw, a first telescopic rod, a first tensioning head, a second telescopic rod and a second tensioning head;

[0012] The base is concave, and the protruding blocks on both sides are side panels. Drive motors are provided inside the two side panels, and the outer walls of the drive motors are connected to screws. The first telescopic rod and the second telescopic rod are hollow inside, and the inner walls are provided with thread grooves. The threads on the outer wall of the left screw are engaged with the thread groove on the inner wall of the first telescopic rod, and the top of the outer wall of the first telescopic rod is connected to the first tensioning head. The outer wall of the drive motor in the right side panel is connected to a screw, and the threads on the outer wall of the screw are engaged with the thread groove on the inner wall of the second telescopic rod, and the top of the outer wall of the second telescopic rod is connected to the second tensioning head.

[0013] Preferably, a mechanical arm assembly is provided at the bottom end of the outer wall of the base;

[0014] The mechanical arm assembly includes: a rotating platform, a first mechanical arm, a second mechanical arm and a third mechanical arm;

[0015] The bottom end of the outer wall of the base is provided with a rotating groove, the short shaft is engaged with the rotating groove, and the other end of the short shaft is connected to the top end of the outer wall of the turntable, and the bottom end of the outer wall of the turntable is provided with a first fixed plate and a second fixed plate, which are respectively arranged on both sides of the bottom end of the outer wall of the turntable, and a third servo motor is installed on the outer wall side of the first fixed plate, and the outer wall side of the third servo motor is connected to the first connecting shaft. Two tenons are provided on the outer wall side of the middle part of the first connecting shaft, and a connecting channel is provided at the front and rear end of the outer wall of the first mechanical rod. The front end is the end close to the turntable, and the rear end is the end away from the turntable. Two slots are provided on the inner wall of the connecting channel at the front end of the first mechanical rod, and the first connecting shaft is connected to the first fixed plate and the second fixed plate through a ball bearing. The two tenons on the first connecting shaft are engaged with the two slots in the connecting channel at the front end of the first mechanical rod.

[0016] Preferably, the outer wall of the first mechanical rod is provided with a connecting channel at the rear end, a second connecting shaft is connected with the connecting channel at the rear end of the first mechanical rod through a ball bearing, the outer wall of the second connecting shaft is provided with two tenons, one is arranged at the front end and the other is arranged at the rear end, the front end of the second connecting shaft is close to the fourth servo motor, the rear end of the second connecting shaft is away from the fourth servo motor, the outer wall of the second mechanical rod and the third mechanical rod is provided with a connecting channel at the front end and the rear end, the front end is close to the fourth servo motor, and the rear end is close to the fifth servo motor, the inner wall of the connecting channel at the front end of the second mechanical rod and the third mechanical rod is provided with a clamping groove, the second connecting shaft is embedded with the clamping groove at the front end of the third mechanical rod through the tenon at the front end, and the second connecting shaft is embedded with the clamping groove at the front end of the second mechanical rod through the tenon at the rear end.

[0017] Preferably, the connecting channels at the rear ends of the second mechanical rod and the third mechanical rod are provided with ball bearings, a third connecting shaft is connected with the connecting channels at the rear ends of the second mechanical rod and the third mechanical rod through the ball bearings, the third connecting shaft is provided with tenons at the front end and the rear end, the front end of the third connecting shaft is close to the fifth servo motor, the tenon at the front end of the third connecting shaft is embedded with the clamping groove in the second round port, and the tenon at the rear end of the third connecting shaft is embedded with the clamping groove in the first round port, the first round port is arranged on the outer wall of the third fixed plate, and the second round port is arranged on the outer wall of the fourth fixed plate.

[0018] Preferably, the third fixed plate and the fourth fixed plate are arranged on the outer wall of the mounting plate at the top end, and a welding assembly is connected to the outer wall of the bottom plate at the bottom end.

[0019] The welding assembly comprises a laser welding head, an external connecting rod and a detection sensor.

[0020] The laser welding head is arranged on the outer wall of the bottom plate, the external connecting rod is arranged on the side surface of the bottom plate, and the detection sensor is connected to the outer wall of the external connecting rod at the bottom end.

[0021] Preferably, the first mechanical hand and the second mechanical hand are connected to the inner wall of the circular track, the first fixed rod and the second fixed rod are arranged on the outer wall of the circular track on both sides, the connecting rod is arranged on the outer wall of the second fixed rod in the front, the control screen is arranged on the outer wall of the connecting rod at the top end, the control line is connected to the outer wall of the second fixed rod on the side surface, the control line is connected with the control screen through the second fixed rod, and the other end of the control line is connected to the outer wall of the conveying motor on the side surface.

[0022] Preferably, the outer wall of the conveying motor is connected with a driving shaft at the top end, the outer wall of the driving shaft is provided with a first conveying belt and a second conveying belt, and the first conveying belt and the second conveying belt are the same in structure.

[0023] The first conveying belt comprises a driving wheel, a track shoe and a protective fence.

[0024] A driving shaft passes through the driving wheel of the first conveyor belt and is connected to the driving wheel of the second conveyor belt. Track plates are provided on the side surfaces of the outer walls of the two driving wheels, a protective fence is provided on the top of the outer wall of the track plates, and a driven wheel is provided on the inner wall of the other end of the track plates. The driven wheel of the first conveyor belt is connected to the driven wheel of the second conveyor belt through a driven shaft.

[0025] Preferably, the connecting wires on the outer wall of the fifth servo motor enter the bus inside the base through the third mechanical rod, the first mechanical rod and the rotating table, the connecting wires on the outer wall of the fourth servo motor enter the bus of the base through the first mechanical rod and the rotating table, the connecting wires on the outer wall of the third servo motor enter the bus of the base through the rotating table, the connecting wires in the first servo motor, the second servo motor and the two drive motors are connected to the bus inside the base, and the bus passes through the circular track and the second fixed rod to be connected to the control screen.

[0026] Preferably, the method of use comprises the following steps:

[0027] S1. The operator sets the distance parameter between the first manipulator and the second manipulator to 0.3m through the control panel, and then drives the first manipulator and the second manipulator to move from the bottom end of the circular track to the top end through the first servo motor and the second servo motor in the sliding assembly;

[0028] S2. The control panel drives the mechanical arm assembly, and the third servo motor, the fourth servo motor, and the fifth servo motor drive the first mechanical rod, the second mechanical rod, and the third mechanical rod to rotate, so that the laser welding head faces vertically to the horizontal plane;

[0029] S3. The operator starts the conveyor motor through the control panel. The conveyor motor drives the battery module to move along the track plate until the detection sensor detects that the first set of tabs arrives directly under the laser welding head. Then, driven by the robotic arm assembly, the laser welding head welds the tabs.

[0030] S4. After the tabs are finally welded, the control panel controls the conveying motor to rotate in the opposite direction, driving the battery module back and stopping when it moves to the middle. At this time, the clamping assembly is relaxed, and the sliding assembly starts to drive the first manipulator and the second manipulator to move to the side of the battery module to weld the bracket. After the welding is completed, the first manipulator and the second manipulator are moved to the bottom of the battery module again by the sliding assembly to weld the outer shell under the battery module to ensure the stability of the overall structure of the battery module.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention achieves multi-position and multi-directional welding requirements by installing a circular track and a sliding assembly. Driven by a first servo motor and a second servo motor, the first manipulator and the second manipulator are driven to flexibly move along the circular track. They can move from the bottom to the top, and can also move to different positions on the side and below the bottom of the battery module. This improves the manipulator's movement flexibility and welding range, eliminates the need for manual adjustment of the manipulator position, improves the degree of automation and welding efficiency, and solves the problem of traditional welding equipment with a fixed manipulator position, a limited welding range, and the need for frequent manual adjustment of the workpiece and equipment position, resulting in low efficiency.

[0033] 2. The present invention achieves stable compression during welding by installing a clamping assembly, preventing the laser welding head from shifting due to welding vibration, ensuring the positioning accuracy of the laser welding head, and ensuring that the laser welding head can accurately align with the welding part, thereby improving the stability of welding quality and solving the problem that the laser welding head is easily shifted due to vibration or shaking during welding, thereby affecting welding accuracy and quality.

[0034] 3. The present invention utilizes a robotic arm assembly to meet the angle requirements of different welding locations. Driven by the third, fourth, and fifth servo motors, the first, second, and third mechanical arms rotate, flexibly adjusting the posture of the laser welding head. This allows for precise control of the angle and position of the laser welding head to meet the posture requirements of different welding scenarios, improving welding adaptability and accuracy. This addresses the issue of traditional welding heads having a fixed angle that cannot adapt to the differentiated welding angle requirements of different battery module locations, resulting in poor welding quality in some locations.

[0035] 4. The present invention realizes precise welding of battery modules by installing welding components. The combination of detection sensors and laser welding heads realizes real-time detection and precise docking of welding positions, avoids manual operation errors, improves the consistency of welding quality, and solves the problems of inaccurate position detection and unstable welding quality in traditional welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0037] Figure 2 It is a side structural schematic diagram of the present invention;

[0038] Figure 3 It is a schematic diagram of the structure of the manipulator of the present invention;

[0039] Figure 4 It is a schematic structural diagram of the mechanical arm assembly of the present invention;

[0040] Figure 5 This is a schematic structural diagram of a welding assembly according to the present invention;

[0041] Figure 6 It is a schematic structural diagram of the sliding assembly of the present invention;

[0042] Figure 7 is a cross-sectional view of the screw of the present invention;

[0043] Figure 8 It is a partial schematic diagram of the laser welding head of the present invention.

[0044] In the figure: 1, circular track; 2, first manipulator; 3, second manipulator; 4, first fixed rod; 5, second fixed rod; 6, connecting rod; 7, control panel; 8, transmission motor; 9, driving wheel; 10, track plate; 11, protection fence; 12, driving shaft; 13, driven wheel; 14, driven shaft; 15, first groove; 16, first slideway; 17, second groove; 18, second slideway; 19, base; 20, first servo motor; 21, first rotating shaft; 22, first pulley; 23, first telescopic rod; 24, first tensioning head; 25, second servo motor; 26, second rotating shaft; 27, second pulley; 28, second telescopic rod; 29, second Tensioning head; 30. Rotating table; 31. Short shaft; 32. First fixed plate; 33. Second fixed plate; 34. First connecting shaft; 35. Third servo motor; 36. First mechanical rod; 37. Second connecting shaft; 38. Fourth servo motor; 39. Second mechanical rod; 40. Third mechanical rod; 41. Third fixed plate; 42. Fourth fixed plate; 43. Third connecting shaft; 44. Bottom plate; 45. Laser welding head; 46. First circular opening; 47. Second circular opening; 48. External rod; 49. Detection sensor; 50. Control line; 51. First conveyor belt; 52. Second conveyor belt; 53. Fifth servo motor; 54. Drive motor; 55. Screw. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] See also Figure 1 、 Figure 2 、 Figure 6 and Figure 7 The present invention provides an embodiment of a multi-directional laser welding device for a solid-state battery module, wherein a first groove 15 and a second groove 17 are respectively provided on both sides of the outer wall of a circular track 1, a first fixing rod 4 and a second fixing rod 5 are provided on both sides of the outer wall of the circular track 1, a connecting rod 6 is installed on the front side of the outer wall of the second fixing rod 5, and a control panel 7 is installed on the top of the outer wall of the connecting rod 6, a first slide 16 is provided on the side surface of the inner wall of the first groove 15, and a second slide 18 is provided on the side surface of the inner wall of the second groove 17, and the outer walls of the first slide 16 and the second slide 18 are assembled with sliding components;

[0049] In the sliding assembly, the first servo motor 20 is connected to the first pulley 22 through the base 19 via the first rotating shaft 21, and the second servo motor 25 is connected to the second pulley 27 through the other side of the base 19 via the second rotating shaft 26. A tensioning assembly is provided inside the base 19;

[0050] The drive motor 54 of the tensioning assembly is installed in the side panel, and the output shaft of the drive motor 54 is connected to the screw 55. The first telescopic rod 23 and the second telescopic rod 28 are hollow and have thread grooves on the inner walls, which are respectively engaged with the threads of the screws 55 on the left and right sides. The top of the first telescopic rod 23 is connected to the first tensioning head 24, and the top of the second telescopic rod 28 is connected to the second tensioning head 29.

[0051] Further, the operator opens the control panel 7, measures the spacing between the pole ears on both sides of the top of the outer wall of the battery module to be 0.3m, and sets the spacing between the first manipulator 2 and the second manipulator 3 to be 0.3m on the control panel 7. At this time, the control panel 7 sends an adjustment instruction, and the instruction is sent to the first servo motor 20 and the second servo motor 25 on the base 19 through the bus. Initially, the first manipulator 2 and the second manipulator 3 are located at the bottom of the circular track 1, and the first servo motor 20 and the second servo motor 25 in the first manipulator 2 start to start. The rotation of the first servo motor 20 drives the rotation of the first rotating shaft 21, and the first rotating shaft 21 is connected to the first pulley 22. The rotation of the first rotating shaft 21 drives the rotation of the first pulley 22. The first pulley 22 is arranged in the first groove 15, and one end of the outer wall of the first pulley 22 contacts the first slideway 16, and the other end of the outer wall of the first pulley 22 contacts the inner wall of the first groove 15. The rotation of the first pulley 22 drives the base 19 to move clockwise upward along the first slideway 16;

[0052] At the same time, the second servo motor 25 is started to drive the second rotating shaft 26 to rotate, and the rotation of the second rotating shaft 26 drives the rotation of the second pulley 27. The second pulley 27 is arranged in the second groove 17. One end of the outer wall of the second pulley 27 contacts the second slideway 18, and the other end contacts the inner wall of the second groove 17. The rotation of the second pulley 27 drives the base 19 to move upward along the second slideway 18 counterclockwise. The rotation of the first pulley 22 and the second pulley 27 drives the first manipulator 2 to move upward in the circular track 1. The second manipulator 3 has the same structure as the first manipulator 2. The second manipulator 3 also performs the same mechanical movement to move upward from the bottom of the circular track 1. The movement of the second manipulator 3 is mirror-symmetrical to that of the first manipulator 2.

[0053] When the laser welding heads 45 in the first manipulator 2 and the second manipulator 3 are 0.3 m apart, they stop moving. At this time, the control panel 7 sends a clamping instruction to the tensioning components in the first manipulator 2 and the second manipulator 3. The instruction is transmitted to the drive motor 54 in the base 19 through the bus. The drive motors 54 on both sides of the base 19 start to start. The start of the drive motor 54 drives the rotation of the screw 55. The threads on the outer walls of the screws 55 on both sides engage with the thread grooves on the inner walls of the first telescopic rod 23 and the second telescopic rod 28. The first telescopic rod 23 and the second telescopic rod 28 are engaged. Short rods are provided on both sides of the outer wall of 28, and the short rods are engaged with the inner wall of the base 19, so that the first telescopic rod 23 and the second telescopic rod 28 do not rotate themselves under the rotation of the screw 55, and the rotational movement is converted into axial outward movement through the action of the thread. The first telescopic rod 23 moves outward to push the first tensioning head 24 to press against the first slide 16, and at the same time, the second telescopic rod 28 moves outward to push the second tensioning head 29 to press against the second slide 18, so that the first manipulator 2 and the second manipulator 3 are tightly fixed on the circular track 1. At this time, the drive motor 54 stops driving.

[0054] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The present invention provides an embodiment of a multi-directional laser welding device for a solid-state battery module. A robotic arm assembly is provided at the bottom end of the outer wall of a base 19. The robotic arm assembly is composed of a rotating platform 30, a first mechanical rod 36, a second mechanical rod 39, and a third mechanical rod 40. These components work together to achieve multi-directional movement of the robotic arm.

[0055] A rotation slot is formed at the bottom of the outer wall of the base 19. One end of the short shaft 31 precisely fits into the rotation slot, and the other end of the short shaft 31 is fixedly connected to the top of the outer wall of the rotating platform 30. The rotating platform 30 can flexibly rotate around the short shaft 31 in the rotation slot, providing the robot arm with an initial degree of rotational freedom.

[0056] A first fixing plate 32 and a second fixing plate 33 are respectively provided on both sides of the bottom end of the outer wall of the rotating table 30. A third servo motor 35 is installed on the outer wall side of the first fixing plate 32. The third servo motor 35 is connected to the first connecting shaft 34. Two tenons are designed on the middle outer wall side of the first connecting shaft 34. The front and rear ends of the first mechanical rod 36 are provided with connecting channels. The inner wall of the front connecting channel is provided with two slots. The first connecting shaft 34 is connected to the first fixing plate 32 and the second fixing plate 33 through a ball bearing. The tenon of the first connecting shaft 34 is engaged with the slot at the front end of the first mechanical rod 36, so that the third servo motor 35 can drive the first mechanical rod 36 to rotate around the first connecting shaft 34, thereby realizing the first joint movement of the robotic arm.

[0057] In the rear end connection channel of the first mechanical rod 36, a second connection shaft 37 is installed via a ball bearing. The outer wall side of the second connection shaft 37 is provided with a tenon at the front end and the rear end. The front end and rear end of the second mechanical rod 39 and the third mechanical rod 40 are also provided with connection channels. The inner wall of the front end connection channel is provided with a slot. The tenon at the front end of the second connection shaft 37 is engaged with the slot at the front end of the third mechanical rod 40, and the tenon at the rear end of the second connection shaft 37 is engaged with the slot at the front end of the second mechanical rod 39. This allows the second connection shaft 37 to simultaneously drive the second mechanical rod 39 and the third mechanical rod 40 to rotate, forming the second joint motion of the robotic arm.

[0058] Ball bearings are installed in the rear end connecting channels of the second mechanical rod 39 and the third mechanical rod 40, and the third connecting shaft 43 is connected to the rear end connecting channel through the ball bearings. The front end and rear end of the third connecting shaft 43 are both provided with tenons, and the tenon at the front end is engaged with the slot in the second circular opening 47 on the outer wall side of the fourth fixed plate 42, and the tenon at the rear end is engaged with the slot in the first circular opening 46 on the outer wall side of the third fixed plate 41, providing a third joint movement for the robotic arm assembly, so that the robotic arm assembly can achieve more complex and precise movements, and realize flexible operation with multiple degrees of freedom.

[0059] Further, when the first manipulator 2 and the second manipulator 3 are fixed on the circular track 1, the control screen 7 is clicked to set the suspension height of the first manipulator 2 and the second manipulator 3 to 0.5m. At this time, the control screen 7 transmits the command to the third servo motor 35, the fourth servo motor 38 and the fifth servo motor 53 through the bus. In the initial state, the manipulator assembly is in a retracted state and is in a zigzag shape. At this time, the rotation of the third servo motor 35 drives the first connecting shaft 34 to rotate. The rotation of the first connecting shaft 34 is engaged with the slot in the first mechanical rod 36 through the tenon, driving the first mechanical rod 36 to move downward along the first connecting shaft 34, so that the first mechanical rod 36 stops when the angle between it and the horizontal is 45 degrees;

[0060] At the same time, the fourth servo motor 38 drives the second connecting shaft 37 to rotate. The rotation of the second connecting shaft 37 is engaged with the slots at the front ends of the second mechanical rod 39 and the third mechanical rod 40 through the tenon on the outer wall of the second connecting shaft 37, driving the second mechanical rod 39 and the third mechanical rod 40 to move downward along the second connecting shaft 37. At this time, the fifth servo motor 53 starts to drive the third connecting shaft 43 to rotate. The rotation of the third connecting shaft 43 drives the third fixed plate 41 and the fourth fixed plate 42 to rotate downward along the third connecting shaft 43, so that the laser welding head 45 faces the ground vertically.

[0061] See also Figure 1 、 Figure 4 、 Figure 5 and Figure 8 , the present invention provides an embodiment: a multi-directional laser welding device for a solid-state battery module, the third fixing plate 41 and the fourth fixing plate 42 are installed on the top of the outer wall of the base plate 44, the bottom end of the outer wall of the base plate 44 is connected to a welding assembly, the welding assembly includes: a laser welding head 45, an external rod 48 and a detection sensor 49, the bottom end of the outer wall of the base plate 44 is installed with a laser welding head 45, the side of the outer wall of the base plate 44 is installed with an external rod 48, the bottom end of the outer wall of the external rod 48 is connected to a detection sensor 49, the driven wheel 13 of the first conveyor belt 51 is connected to the driven wheel 13 of the second conveyor belt 52 through the driven shaft 14.

[0062] Further, the control screen 7 is clicked to start the transmission motor 8 through the control line 50. The start of the transmission motor 8 drives the rotation of the driving shaft 12. The rotation of the driving shaft 12 drives the rotation of the driving wheel 9 on the first conveyor belt 51 and the second conveyor belt 52. The rotation of the driving wheel 9 drives the rotation of the crawler plate 10 on the first conveyor belt 51 and the second conveyor belt 52. The crawler plate 10 is equipped with a battery module. The protection rail 11 on the crawler plate 10 protects the battery module from slipping and also clamps the battery module during welding.

[0063] The detection sensor 49 has a built-in Bluetooth protocol, and the detection sensor 49 is connected to the control screen 7 via the Bluetooth protocol. The detection sensor 49 detects the tabs in real time. When the tabs in the battery module are close, the alternating magnetic field inside the detection sensor 49 is disturbed, and the coil inductance changes, thereby causing the output signal of the detection sensor 49 to change. The detection sensor 49 transmits the output signal to the control screen 7 via the Bluetooth protocol. When the control screen 7 detects the tabs, it stops the operation of the transmission motor 8 through the control line 50, and transports the first group of tabs in the battery module to just below the laser welding head 45. Then the control screen 7 sends instructions to the third servo motor 35, the fourth servo motor 38 and the fifth servo motor 53. The third servo motor 35, the fourth servo motor 38 and the fifth servo motor 53 start to drive the first manipulator 2 and the second manipulator 3 to continue to move vertically downward, so that the laser welding head 45 is aligned with the tabs for welding.

[0064] After the welding of the first set of tabs is completed, the control panel 7 starts the conveying motor 8 through the control line 50 to make the battery module continue to move. When the detection sensor 49 detects the tab again, the control panel 7 controls the conveying motor 8 to stop, and the third servo motor 35, the fourth servo motor 38 and the fifth servo motor 53 drive the first manipulator 2 and the second manipulator 3 to weld the second set of tabs.

[0065] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 6 The present invention provides an embodiment of a multi-directional laser welding device for a solid-state battery module, wherein a first groove 15 and a second groove 17 are provided on both sides of the outer wall of a circular track 1, a first slide 16 is provided on the inner wall side of the first groove 15, and a second slide 18 is provided on the inner wall side of the second groove 17, and sliding components are provided on the outer walls of the first slide 16 and the second slide 18;

[0066] The sliding assembly includes a base 19, a first servo motor 20, a first rotating shaft 21, a first pulley 22 and a second servo motor 25. The first rotating shaft 21 is connected to the side of the outer wall of the first servo motor 20, and the first rotating shaft 21 passes through the side of the outer wall of the base 19 and is connected to the first pulley 22. The second rotating shaft 26 is connected to the side of the outer wall of the second servo motor 25, and the second rotating shaft 26 passes through the other side of the outer wall of the base 19 and is connected to the second pulley 27.

[0067] Furthermore, when the tabs at the top of the battery module are welded, the control panel 7 controls the conveying motor 8 to rotate in the reverse direction through the control line 50, driving the track plate 10 to drive the battery module back, and stops when it returns to the middle position. At the same time, the control panel 7 sends an adjustment instruction to the first manipulator 2 and the second manipulator 3 to adjust the position to the side of the circular track 1;

[0068] At this time, the drive motor 54 starts, and the start of the drive motor 54 drives the rotation of the screw 55. The rotation of the screw 55 gradually shrinks the first telescopic rod 23 and the second telescopic rod 28, so that the first tensioning head 24 pressed on the first slide 16 and the second tensioning head 29 pressed on the second slide 18 move outward, and then the first servo motor 20 and the second servo motor 25 start to drive the first rotating shaft 21 and the second rotating shaft 26 to rotate. The rotation of the first rotating shaft 21 and the second rotating shaft 26 drives the first pulley 22 and the second pulley 27 to move along the circular track 1 to both sides of the battery module and stop. At this time, the tensioning assembly starts again, and the first tensioning head 24 and the second tensioning head 29 tightly fix the first manipulator 2 and the second manipulator 3 on both sides of the battery module, and then the laser welding head 45 welds the brackets on both sides of the battery module to enhance the overall structural strength of the battery module.

[0069] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 7 The present invention provides an embodiment of a multi-directional laser welding device for a solid-state battery module, wherein a sliding assembly is assembled on the outer walls of a first slideway 16 and a second slideway 18. A first servo motor 20 in the sliding assembly is connected to a first pulley 22 via a first rotating shaft 21 through a base 19, and a second servo motor 25 is connected to a second pulley 27 via a second rotating shaft 26 through the other side of the base 19. A tensioning assembly is disposed inside the base 19.

[0070] The drive motor 54 of the tensioning assembly is installed in the side panel, and the output shaft of the drive motor 54 is connected to the screw 55. The first telescopic rod 23 and the second telescopic rod 28 are hollow and have thread grooves on the inner walls, which are respectively engaged with the threads of the screws 55 on the left and right sides. The top of the first telescopic rod 23 is connected to the first tensioning head 24, and the top of the second telescopic rod 28 is connected to the second tensioning head 29.

[0071] Furthermore, when the bracket welding on the side of the battery module is completed, the control panel 7 sends an adjustment instruction to the sliding assembly and the clamping assembly. At this time, the first tensioning head 24 and the second tensioning head 29 in the clamping assembly gradually move outward through the action of the drive motor 54 and the screw 55, and no longer apply pressure to the first slide 16 and the second slide 18. At the same time, the first servo motor 20 and the second servo motor 25 are started. The first servo motor 20 and the second servo motor 25 start to drive the rotation of the first rotating shaft 21 and the second rotating shaft 26. The rotation of the first rotating shaft 21 and the second rotating shaft 26 drives the first pulley 22 and the second pulley 27 to rotate, thereby moving the first manipulator 2 and the second manipulator 3 from the side of the battery module to directly below the battery module.

[0072] At this time, the tensioning assembly starts again, and the first tensioning head 24 is driven by the driving motor 54 and the screw 55 to apply a clamping force to the first slide 16, and the second tensioning head 29 is driven to apply the same clamping force to the second slide 18, so that the first manipulator 2 and the second manipulator 3 are tightly fixed on the circular track 1, and then the laser welding head 45 welds the outer shell at the bottom of the battery module to ensure the structural strength of the entire battery module.

[0073] Working principle: First, the operator sets the distance parameter between the first manipulator 2 and the second manipulator 3 to 0.3m through the control panel 7, and then drives the first manipulator 2 and the second manipulator 3 from the bottom end of the circular track 1 to the top end through the first servo motor 20 and the second servo motor 25 in the sliding assembly;

[0074] Then, the operator drives the robotic arm assembly through the control panel 7, and drives the first mechanical rod 36, the second mechanical rod 39, and the third mechanical rod 40 through the third servo motor 35, the fourth servo motor 38, and the fifth servo motor 53, so that the laser welding head 45 is vertically facing the horizontal plane. The operator starts the conveying motor 8 through the control panel 7, and drives the conveying motor 8 to move the battery module along the track plate 10 until the detection sensor 49 detects that the first group of tabs have reached directly below the laser welding head 45, and stops. Then, driven by the robotic arm assembly, the laser welding head 45 welds the tabs.

[0075] Finally, after the tabs are welded, the control panel 7 controls the conveying motor 8 to rotate in the opposite direction, driving the battery module back and stopping when it moves to the middle. At this time, the clamping assembly is relaxed, and the sliding assembly starts to drive the first manipulator 2 and the second manipulator 3 to move to the side of the battery module to weld the bracket. After the welding is completed, the first manipulator 2 and the second manipulator 3 are moved to the bottom of the battery module by the sliding assembly again to weld the outer shell under the battery module to ensure the stability of the overall structure of the battery module.

[0076] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A multi-directional laser welding device for solid-state battery modules, comprising a circular track (1) and a sliding assembly, characterized in that: A first groove (15) and a second groove (17) are provided on both sides of the outer wall of the circular track (1); a first slideway (16) is provided on the inner wall side of the first groove (15); a second slideway (18) is provided on the inner wall side of the second groove (17); and sliding components are provided on the outer walls of the first slideway (16) and the second slideway (18); The sliding assembly comprises: a base (19), a first servo motor (20), a first rotating shaft (21), a first pulley (22) and a second servo motor (25); A first rotating shaft (21) is connected to the side surface of the outer wall of the first servo motor (20), and the first rotating shaft (21) passes through the side surface of the outer wall of the base (19) and is connected to the first pulley (22). A second rotating shaft (26) is connected to the side surface of the outer wall of the second servo motor (25), and the second rotating shaft (26) passes through the other side of the outer wall of the base (19) and is connected to the second pulley (27).

2. The multi-directional laser welding equipment for solid-state battery modules according to claim 1, characterized in that: A tensioning assembly is provided inside the base (19); The tensioning assembly comprises: a driving motor (54), a screw (55), a first telescopic rod (23), a first tensioning head (24), a second telescopic rod (28) and a second tensioning head (29); The base (19) is concave, and the protruding blocks on both sides are side plates. A drive motor (54) is provided inside the two side plates. The outer wall of the drive motor (54) is connected to a screw (55). The first telescopic rod (23) and the second telescopic rod (28) are hollow inside, and the inner walls are provided with a thread groove. The thread of the outer wall of the left screw (55) is engaged with the thread groove of the inner wall of the first telescopic rod (23). The top of the outer wall of the first telescopic rod (23) is connected to the first tensioning head (24). The outer wall of the drive motor (54) in the right side plate is connected to a screw (55). The thread of the outer wall of the screw (55) is engaged with the thread groove of the inner wall of the second telescopic rod (28). The top of the outer wall of the second telescopic rod (28) is connected to the second tensioning head (29).

3. The multi-directional laser welding equipment for solid-state battery modules according to claim 1, characterized in that: A mechanical arm assembly is provided at the bottom end of the outer wall of the base (19); The mechanical arm assembly includes: a rotating platform (30), a first mechanical rod (36), a second mechanical rod (39) and a third mechanical rod (40); The bottom end of the outer wall of the base (19) is provided with a rotation groove, the short shaft (31) is engaged with the rotation groove, and the other end of the short shaft (31) is connected to the top end of the outer wall of the rotating platform (30). The bottom end of the outer wall of the rotating platform (30) is provided with a first fixed plate (32) and a second fixed plate (33), which are respectively arranged on both sides of the bottom end of the outer wall of the rotating platform (30). A third servo motor (35) is installed on the side surface of the outer wall of the first fixed plate (32). The side surface of the outer wall of the third servo motor (35) is connected to the first connecting shaft (34). The middle outer wall of the first connecting shaft (34) is provided with a first fixed plate (32). Two tenons are provided on the side, and a connecting channel is provided at the front end and the rear end of the outer wall of the first mechanical rod (36), the front end being the end close to the rotating table (30), and the rear end being the end away from the rotating table (30). Two slots are provided on the inner wall of the connecting channel at the front end of the first mechanical rod (36). The first connecting shaft (34) is connected to the first fixing plate (32) and the second fixing plate (33) through a ball bearing, and the two tenons on the first connecting shaft (34) are engaged with the two slots in the connecting channel at the front end of the first mechanical rod (36).

4. The multi-directional laser welding equipment for solid-state battery modules according to claim 3, characterized in that: A connecting channel is provided at the rear end of the outer wall of the first mechanical rod (36), and the second connecting shaft (37) is connected to the connecting channel at the rear end of the first mechanical rod (36) through a ball bearing. Two tenons are provided on the side of the outer wall of the second connecting shaft (37), one tenon is provided at the front end, and the other tenon is provided at the rear end. The front end of the second connecting shaft (37) is an end close to the fourth servo motor (38), and the rear end of the second connecting shaft (37) is an end away from the fourth servo motor (38). A connecting channel is provided at the front end and the rear end of the outer wall of the second mechanical rod (39) and the third mechanical rod (40), respectively. The front end is an end close to the fourth servo motor (38), and the rear end is an end close to the fifth servo motor (53). A slot is provided on the inner wall of the connecting channel at the front end of the second mechanical rod (39) and the third mechanical rod (40). The second connecting shaft (37) is engaged with the slot at the front end of the third mechanical rod (40) through the tenon at the front end, and the second connecting shaft (37) is engaged with the slot at the front end of the second mechanical rod (39) through the tenon at the rear end.

5. The multi-directional laser welding equipment for solid-state battery modules according to claim 4, characterized in that: A ball bearing is provided in the connection channel at the rear end of the second mechanical rod (39) and the third mechanical rod (40), and the third connecting shaft (43) is connected to the connection channel at the rear end of the second mechanical rod (39) and the third mechanical rod (40) through the ball bearing. A tenon is provided at the front end and the rear end of the third connecting shaft (43), and the front end of the third connecting shaft (43) is an end close to the fifth servo motor (53). The tenon at the front end of the third connecting shaft (43) is engaged with the slot in the second circular opening (47), and the tenon at the rear end of the third connecting shaft (43) is engaged with the slot in the first circular opening (46). The first circular opening (46) is provided on the side of the outer wall of the third fixed plate (41), and the second circular opening (47) is provided on the side of the outer wall of the fourth fixed plate (42).

6. The multi-directional laser welding equipment for solid-state battery modules according to claim 5, characterized in that: The third fixing plate (41) and the fourth fixing plate (42) are mounted on the top end of the outer wall of the bottom plate (44), and the bottom end of the outer wall of the bottom plate (44) is connected to a welding assembly; The welding assembly includes: a laser welding head (45), an external connecting rod (48) and a detection sensor (49); A laser welding head (45) is installed at the bottom end of the outer wall of the bottom plate (44), an external connecting rod (48) is installed on the side of the outer wall of the bottom plate (44), and a detection sensor (49) is connected to the bottom end of the outer wall of the external connecting rod (48).

7. The multi-directional laser welding equipment for solid-state battery modules according to claim 1, characterized in that: The inner wall of the circular track (1) is connected to a first manipulator (2) and a second manipulator (3), and a first fixing rod (4) and a second fixing rod (5) are provided on both sides of the outer wall of the circular track (1). A connecting rod (6) is installed on the front of the outer wall of the second fixing rod (5), and a control screen (7) is installed on the top of the outer wall of the connecting rod (6). A control line (50) is connected to the side surface of the outer wall of the second fixing rod (5), and the control line (50) is connected to the control screen (7) through the second fixing rod (5). The other end of the control line (50) is connected to the side surface of the outer wall of the transmission motor (8).

8. The multi-directional laser welding equipment for solid-state battery modules according to claim 7, characterized in that: The top end of the outer wall of the conveying motor (8) is connected to a driving shaft (12), and the side surface of the outer wall of the driving shaft (12) is provided with a first conveyor belt (51) and a second conveyor belt (52), and the first conveyor belt (51) and the second conveyor belt (52) have the same structure; The first conveyor belt (51) includes a driving wheel (9), a track plate (10) and a protection fence (11); A driving shaft (12) passes through the driving wheel (9) of the first conveyor belt (51) and is connected to the driving wheel (9) of the second conveyor belt (52). Track plates (10) are provided on the outer wall sides of the two driving wheels (9). A protective fence (11) is provided on the top of the outer wall of the track plate (10). A driven wheel (13) is provided on the inner wall of the other end of the track plate (10). The driven wheel (13) of the first conveyor belt (51) is connected to the driven wheel (13) of the second conveyor belt (52) through a driven shaft (14).

9. The multi-directional laser welding equipment for solid-state battery modules according to claim 4, characterized in that: The connecting wires on the outer wall of the fifth servo motor (53) enter the bus inside the base (19) through the third mechanical rod (40), the first mechanical rod (36) and the rotating table (30), the connecting wires on the outer wall of the fourth servo motor (38) enter the bus inside the base (19) through the first mechanical rod (36) and the rotating table (30), the connecting wires on the outer wall of the third servo motor (35) enter the bus inside the base (19) through the rotating table (30), and the connecting wires in the first servo motor (20), the second servo motor (25) and the two drive motors (54) are connected to the bus inside the base (19), and the bus passes through the circular track (1) and the second fixed rod (5) and is connected to the control panel (7).

10. A method for using a multi-directional laser welding device for a solid-state battery module, adapted for the multi-directional laser welding device for a solid-state battery module according to any one of claims 1 to 9, characterized in that: The method of use comprises the following steps: S1. The operator sets the spacing parameter between the first manipulator (2) and the second manipulator (3) to 0.3 m through the control panel (7), and then drives the first manipulator (2) and the second manipulator (3) from the bottom end to the top end of the circular track (1) through the first servo motor (20) and the second servo motor (25) in the sliding assembly; S2, driving the mechanical arm assembly through the control panel (7), and driving the first mechanical rod (36), the second mechanical rod (39) and the third mechanical rod (40) through the driving of the third servo motor (35), the fourth servo motor (38) and the fifth servo motor (53), so that the laser welding head (45) faces vertically to the horizontal plane; S3, the operator starts the conveying motor (8) through the control panel (7), and the battery module is driven by the conveying motor (8) to move along the track plate (10) until the detection sensor (49) detects that the first set of tabs arrives directly below the laser welding head (45) and stops, and then the laser welding head (45) welds the tabs under the drive of the robot arm assembly; S4. After the tabs are finally welded, the control panel (7) controls the conveying motor (8) to rotate in the opposite direction, driving the battery module to return and stop when it moves to the middle. At this time, the clamping assembly is relaxed, and the sliding assembly starts to drive the first manipulator (2) and the second manipulator (3) to move to the side of the battery module to weld the bracket. After the welding is completed, the sliding assembly is used to move the first manipulator (2) and the second manipulator (3) to the bottom of the battery module again to weld the outer shell below the battery module to ensure the stability of the overall structure of the battery module.

Images