Method for welding battery tray by using double-robot intelligent interactive welding station

Abstract

The invention discloses a method for welding a battery tray through a double-robot intelligent interaction welding station. The method comprises the following steps: S1, placing a single battery tray on a substrate and positioning through a floating positioning mechanism; s2, enabling a tray pressing unit to press the battery tray, and enabling a floating supporting mechanism to be supported at the bottom of the battery tray; s3, the two pressing plates are placed on the two upper covers of the battery tray; s4, the two pressing plates are pressed by a third pressing mechanism; s5, a servo sliding table is made to move to a designated position, a plurality of fourth pressing mechanisms are made to press two pressing plates, and the double robots are made to conduct welding at the same time along the first-stage welding tracks of the two water cooling areas of the battery tray correspondingly; s6, the servo sliding table and the two pressing plates are moved away; s7, the two robots are made to conduct welding along the second-stage welding tracks of the two water cooling areas; and S8, taking out the battery tray. The welding quality and efficiency are high, and manpower resources are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery tray welding, and in particular to a method for welding a battery tray by utilizing a dual-robot intelligent interactive welding station. Background Art

[0002] At present, battery trays in the field of new energy vehicles mostly use robot welding technology, fully automated solutions, and intelligent welding stations have emerged. However, there are the following problems with welding battery trays in current intelligent welding stations: First, various factors such as station fixtures, welding methods, and complex welding trajectories result in low welding quality and poor appearance of the battery tray after welding; second, the welding station only uses a single robot to weld a single battery tray, resulting in slow production cycles and low production efficiency. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a method for welding a battery tray using a dual-robot intelligent interactive welding station, which has high welding quality and high welding production efficiency, and saves human resources.

[0004] According to the method for welding a battery tray using a dual-robot intelligent interactive welding station according to an embodiment of the present invention, the dual-robot intelligent interactive welding station includes a base plate, a floating positioning mechanism, a floating support mechanism, a pressing plate, a tray clamping unit, a third clamping mechanism, a servo slide, and a dual robot; the method for welding a battery tray using a dual-robot intelligent interactive welding station includes the following steps in sequence:

[0005] S1: placing a single battery tray on the substrate and positioning it by the floating positioning mechanism, wherein the battery tray comprises a bottom box and two upper covers, the two upper covers are spaced apart and arranged side by side on the bottom box, the areas corresponding to the two upper covers on the battery tray are water cooling areas, and each of the water cooling areas has an optimized first-stage welding trajectory and a second-stage welding trajectory;

[0006] S2: enabling the tray pressing unit to press the battery tray and correspondingly support the bottom of the battery tray through the floating support mechanism;

[0007] S3: placing the two pressing plates on the two upper covers correspondingly, so that the welding track of the first stage is exposed and the welding track of the second stage is not exposed;

[0008] S4: Pressing the third pressing mechanism onto the two pressing plates;

[0009] S5: moving the servo slide to a specified position, and causing the plurality of fourth clamping mechanisms on the servo slide to clamp the two clamping plates, so that the dual robots weld along the first-stage welding tracks of the two water-cooling areas simultaneously, until the first-stage welding tracks are welded;

[0010] S6: Remove the servo slide and the two pressing plates;

[0011] S7: enabling the dual robots to weld along the second-stage welding tracks of the two water-cooling areas respectively until the second-stage welding tracks are completed;

[0012] S8: Release the tray pressing unit and take out the welded battery tray.

[0013] According to the method of welding a battery tray using a dual-robot intelligent interactive welding station in an embodiment of the present invention, by placing a single battery tray on a substrate and positioning the battery tray through a floating positioning mechanism, the position of the battery tray on the substrate is accurate, and the bottom of the battery tray, such as the water cooling port position at the bottom of the battery tray, is reliably supported by the floating support mechanism; at the same time, the tray clamping unit is directly clamped on the battery tray, and the upper cover of the battery tray is clamped by a pressure plate, and the third clamping mechanism and the servo slide are clamped on the pressure plate to ensure that the upper cover is clamped on the bottom box when the dual robots weld the battery tray, thereby improving the welding quality. In addition, the first-stage welding trajectory and the second-stage welding trajectory of the battery tray are obtained through optimized design, which ensures the structural strength of the battery tray after welding, thereby improving the quality of the battery tray after welding, and the appearance of the battery tray after welding is good. The method of welding a battery tray using a dual-robot intelligent interactive welding station in an embodiment of the present invention can realize fully automated welding, can simultaneously weld two water-cooling areas of a single battery tray, improve the production efficiency and production rhythm of battery tray welding, and save human resources.

[0014] In some embodiments, the tray pressing unit includes a first pressing mechanism and a second pressing mechanism for pressing the periphery of the battery tray.

[0015] In some embodiments, step S1 includes the following sub-steps in sequence:

[0016] S101: Loosening the floating positioning mechanism, the floating supporting mechanism, the tray pressing unit and the third pressing mechanism;

[0017] S102: Extending the positioning pin of the floating positioning mechanism upward;

[0018] S103: placing the battery tray on the substrate, and during the placement process, making the positioning holes on the battery tray match with the corresponding positioning pins.

[0019] In some embodiments, step S2 specifically includes: pressing the first pressing mechanism onto the bottom box, pressing the second pressing mechanism onto the upper cover, and then locking the floating support mechanism.

[0020] In some embodiments, step S2 specifically includes the following sub-steps:

[0021] S201: First, the first pressing mechanism presses the four corners of the bottom box simultaneously;

[0022] S202: Then, the second pressing mechanism is used to simultaneously press the front side, left side and rear side of the upper cover on the left and the front side, right side and rear side of the upper cover on the right;

[0023] S203: Finally, locking the floating support mechanism.

[0024] In some embodiments, in step S3, the first stage welding trajectory of each of the water-cooling areas includes a plurality of long welding trajectories spaced left and right and extending in the front-to-back direction and a circumferential welding trajectory located around the corresponding upper cover, and the plurality of long welding trajectories are exposed through corresponding hollow portions on the pressure plate, and the circumferential welding trajectory surrounds the outside of the pressure plate.

[0025] In some embodiments, in step S3, the multiple long welding tracks in each of the water cooling areas are respectively a first welding track, a second welding track and a third welding track, and the first welding track is located between the second welding track and the third welding track in the left-right direction.

[0026] In some embodiments, step S4 specifically includes: causing the third pressing mechanism to press the left side edge of the pressing plate located on the left and the right side edge of the pressing plate located on the right.

[0027] In some embodiments, step S5 includes the following sub-steps in sequence:

[0028] S501: Move the servo slide to a designated position between the two water-cooling areas, and press the two pressing plates at positions close to the first welding track to be welded by a plurality of the fourth clamping mechanisms; enable the dual robots to weld along the first welding tracks of the two water-cooling areas simultaneously, respectively, with the starting point of the first welding track being away from the water-cooling port at the bottom of the battery tray and the end point being close to the water-cooling port;

[0029] S502: Move the servo slide to one side in the left-right direction to a designated position on one side, and clamp the two pressing plates at a position close to the second welding track to be welded by a plurality of the fourth clamping mechanisms; and make the dual robots weld along the second welding tracks of the two water-cooling areas at the same time;

[0030] S503: Move the servo slide to the other side in the left-right direction to the specified position on the other side, and clamp the two pressing plates close to the third welding track to be welded by multiple fourth clamping mechanisms; enable the dual robots to weld along the third welding tracks of the two water-cooling areas simultaneously.

[0031] In some embodiments, step S5 further includes the following sub-steps:

[0032] S504: After step S503, the servo slide is moved to a designated position between the two water-cooling areas, and is clamped on the two pressure plates by a plurality of the fourth clamping mechanisms; the dual robots are enabled to weld the circumferential welding track, and during the welding process, the second clamping mechanism, the third clamping mechanism and the fourth clamping mechanism are opened and clamped in sequence so that the dual robots do not interfere with the second clamping mechanism, the third clamping mechanism and the fourth clamping mechanism.

[0033] In some embodiments, in step S3, the second-stage welding trajectory of each of the water-cooling areas includes a fifth welding trajectory, a sixth welding trajectory and a seventh welding trajectory; wherein the fifth welding trajectory is a short welding trajectory extending left and right and away from the water-cooling port at the bottom of the battery tray, and the fifth welding trajectory is located between the starting position of the first welding trajectory and the circumferential welding trajectory in the front-to-back direction and between the second welding trajectory and the third welding trajectory in the left-to-right direction; the sixth welding trajectory is a circular ring trajectory; the seventh welding trajectory is located on one side of the end position of the first welding trajectory and is on the same line as the first welding trajectory, and the seventh welding trajectory is located between the circumferential welding trajectory and the water-cooling port.

[0034] In some embodiments, step S6 includes the following sub-steps in sequence:

[0035] S601: moving the servo slide away from the substrate;

[0036] S602: The two pressing plates are removed simultaneously by the truss lifting device of the dual-robot intelligent interactive welding station.

[0037] In some embodiments, in step S7, the dual robots are enabled to weld the fifth welding track, the sixth welding track and the seventh welding track simultaneously and in sequence.

[0038] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0040] Figure 1 It is a structural schematic diagram of a dual-robot intelligent interactive welding station of the present invention;

[0041] Figure 2 It is a schematic diagram of a substrate and a floating positioning mechanism in a dual-robot intelligent interactive welding station of the present invention;

[0042] Figure 3 It is a schematic diagram of the floating positioning mechanism in the dual-robot intelligent interactive welding station of the present invention;

[0043] Figure 4 It is a schematic diagram of a substrate and a floating support mechanism in a dual-robot intelligent interactive welding station of the present invention;

[0044] Figure 5 It is a schematic diagram of a floating support mechanism in a dual-robot intelligent interactive welding station of the present invention;

[0045] Figure 6 It is a partial structural schematic diagram of the dual-robot intelligent interactive welding station of the present invention;

[0046] Figure 7 It is a schematic diagram of the fourth clamping mechanism on the servo slide in the dual-robot intelligent interactive welding station of the present invention;

[0047] Figure 8 It is a schematic diagram of a truss lifting device and a pressing plate in a dual-robot intelligent interactive welding station of the present invention;

[0048] Fig. 9 for Figure 8 A partial enlarged view of

[0049] Fig.10 This is a schematic diagram of the welding logic of the battery tray of the present invention.

[0050] Reference numerals:

[0051] Dual-robot intelligent interactive welding station 100; substrate 10; floating positioning mechanism 11; positioning pin 111; floating support mechanism 12; pressure plate 13; first clamping mechanism 14; second clamping mechanism 15; third clamping mechanism 16; servo slide 17; fourth clamping mechanism 171; robot 18; truss lifting device 19; battery tray 200; first welding track 21; second welding track 22; third welding track 23; circumferential welding track 24; fifth welding track 25; sixth welding track 26; seventh welding track 27; bottom box 28; upper cover 29. DETAILED DESCRIPTION

[0052] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0053] Combine the following Figures 1 to 10 A method for welding a battery tray 200 using a dual-robot intelligent interactive welding station 100 according to an embodiment of the present invention is described.

[0054] like Figures 1 to 10 As shown, according to the method of welding a battery tray 200 using a dual robot intelligent interactive welding station 100 in an embodiment of the present invention, the dual robot intelligent interactive welding station 100 is used to simultaneously perform fully automatic welding such as stir friction welding on two water-cooling areas of a single battery tray 200. The battery tray 200 includes a bottom box 28 and two upper covers 29 covering the bottom box 28. The two upper covers 29 are also water-cooling plates and need to be welded and fixed to the bottom box 28. The positions of the two upper covers 29 on the single battery tray 200 are the two water-cooling areas of the battery tray 200.

[0055] Specifically, the dual-robot intelligent interactive welding station 100 includes a base plate 10, a floating positioning mechanism 11, a floating support mechanism 12, a pressing plate 13, a pallet clamping unit, a third clamping mechanism 16, a servo slide 17, a dual robot 18, and a truss lifting device 19. The base plate 10 is used to place the above-mentioned single battery tray 200. The floating positioning mechanism 11 and the floating support mechanism 12 are both distributed at appropriate positions of the substrate 10. The floating positioning mechanism 11 is used to float the battery tray 200, so as to improve the position accuracy of the battery tray 200 on the substrate 10 and improve the welding quality. When the battery tray 200 is placed on the substrate 10, the floating positioning mechanism 11 cooperates with the positioning holes on the bottom of the battery tray 200 through the positioning pins 111 extended by itself, so that the battery tray 200 is accurately placed at the ideal position on the substrate 10. It is suitable for battery trays 200 with positioning holes of different sizes or battery trays 200 with processing errors. At the same time, the floating positioning mechanism 11 uses its own elastic parts to buffer the impact of the battery tray 200 when it is lowered, so as to protect the battery tray 200. It is used to reliably provide floating support for the bottom of the battery tray 200. For example, the floating support mechanism 12 is suitable for providing floating support for the water cooling port position at the bottom of the battery tray 200. Since the water cooling port position at the bottom of the battery tray 200 is uneven, the side of the water cooling port tube body protrudes downward from the lower surface of the bottom box 28. There are errors in the processing of the bottom of the water cooling port of different battery trays 200. The bottom of the water cooling port of the battery tray 200 is reliably supported by the three supporting parts of the floating support mechanism 12. Among them, the shorter fixed supporting part located in the middle of the three supporting parts is supported on the lowest position of the side of the water cooling port tube body, and the other two floating supporting parts of the three supporting parts are supported on both sides of the water cooling port tube body. The battery tray is reliably supported by the three supporting parts, which is conducive to improving the welding quality, and the adaptability of the floating support mechanism 12 is good. There are two pressing plates 13, and the two pressing plates 13 are respectively used to cover and press on the two upper covers 29 of the battery tray 200, so that the downward pressure applied to the pressing plate 13 is as evenly distributed as possible, which is conducive to improving the welding quality and protecting the battery tray 200.The tray clamping unit is used to clamp the battery tray 200. Specifically, the tray clamping unit may include a first clamping mechanism 14 and a second clamping mechanism 15. The first clamping mechanism 14 and the second clamping mechanism 15 are distributed around the substrate 10 to clamp the periphery of the battery tray 200. For example, the first clamping mechanism 14 is used to clamp the periphery of the bottom box. More specifically, it can be distributed at the four corners of the substrate 10 to clamp the four corners of the bottom box to prevent the bottom box 28 from moving, and the second clamping mechanism 15 is used to clamp the two upper covers 29. More specifically, the second clamping mechanism 15 is used to clamp the front side, left side and rear side of the upper cover 29 on the left and the front side, right side and rear side of the upper cover 29 on the right of the battery tray 200 to prevent the upper cover 29 and the bottom box 28 from moving. The third clamping mechanism 16 is used to directly clamp on the two pressure plates 13. Specifically, the third clamping mechanism 16 is distributed on the left and right sides of the substrate 10, and is used to clamp the left side of the pressure plate 13 on the upper cover 29 of the battery tray 200 on the left and the right side of the pressure plate 13 on the upper cover 29 of the battery tray 200 on the right, to prevent the pressure plate 13, the upper cover 29, and the bottom box 28 from moving. The servo slide 17 includes a plurality of fourth clamping mechanisms 171 suspended and distributed along the front and rear intervals. The fourth clamping mechanism 171 can adopt a cylinder clamping mechanism. The servo slide 17 can move left and right relative to the substrate 10, so that the servo slide 17 can be moved to different designated positions, so that the plurality of fourth clamping mechanisms 171 can be clamped on the pressure plate 13 and close to the current track to be welded according to the different positions of the current track to be welded, so as to improve the welding quality. The dual robots 18 can be arranged on the left and right sides of the substrate 10 to facilitate the dual robots 18 to perform welding work. Each robot 18 in the dual robots 18 can be a friction stir welding robot (IFSW for short). The truss lifting device 19 is used to reliably lift the pressure plate 13. There are two truss lifting devices 19, which are used to lift two pressure plates 13 at the same time, place the two pressure plates 13 on the two upper covers 29 of the battery tray 200, and remove the pressure plates 13 from the two upper covers 29 of the battery tray 200.

[0056] The following describes a method for welding a battery tray 200 using a dual-robot intelligent interactive welding station 100, which includes the following steps in sequence:

[0057] S1: Placing a single battery tray 200 on the substrate 10 and positioning it through the floating positioning mechanism 11 can improve the position accuracy of the battery tray 200 on the substrate 10, thereby improving the welding quality of the battery tray 200. The battery tray 200 includes a bottom box 28 and two upper covers 29, the two upper covers 29 are spaced apart and covered on the bottom box 28 side by side, and the areas corresponding to the two upper covers 29 on the battery tray 200 are water cooling areas, and each water cooling area has an optimized first stage welding trajectory (such as Fig.10 The first welding track 21, the second welding track 22, the third welding track 23 and the circumferential welding track 24) and the second stage welding track (such as Fig.10 The fifth welding track 25, the sixth welding track 26 and the seventh welding track 27 in the embodiment of the present invention are shown in FIG. 1 , that is, the first stage welding track and the second stage welding track are obtained through software and data processing optimization, and the dual robot 18 can perform welding along the first stage welding track and the second stage welding track to improve the quality of the battery tray 200 after welding. The floating positioning mechanism 11 can be multiple, for example Figure 2 Two floating positioning mechanisms 11 are shown, which can accurately position the battery tray 200 and improve the welding quality.

[0058] S2: Make the tray pressing unit press the battery tray 200 and support it correspondingly at the bottom of the battery tray 200 through the floating support mechanism 12, such as the water cooling port position at the bottom of the battery tray 200. Among them, the tray pressing unit presses the battery tray 200 to prevent the battery tray 200 from moving, which can improve the welding quality; since there are local unevenness at the bottom of the battery tray 200, such as the uneven position of the water cooling port at the bottom of the battery tray 200, the side of the water cooling port protrudes downward from the lower surface of the bottom box 28, the floating support mechanism 12 can be used to reliably support the water cooling pipe port position at the bottom of the battery tray 200, which is beneficial to improve the welding quality; since each water cooling area of ​​the battery tray 200 has two water cooling ports, one is a water inlet and the other is a water outlet, each battery tray 200 can be floatingly supported by four floating support mechanisms 12.

[0059] S3: Place the two pressing plates 13 on the two upper covers 29 accordingly, so that the first stage welding track is exposed and the second stage welding track is not exposed. By pressing the pressing plate 13 on the upper cover 29, it is beneficial to distribute the downward pressure applied to the pressing plate 13 as evenly as possible, so that the upper cover 29 is pressed against the bottom box 28 as a whole, which is beneficial to improve the welding quality and protect the battery tray 200. The exposed first stage welding track is welded first, and the non-exposed second stage welding track is welded later.

[0060] S4: The third pressing mechanism 16 is pressed against the two pressing plates 13 to prevent the pressing plates 13 from moving and the two upper covers 29 are pressed against the bottom box 28, which is beneficial to improving the welding quality.

[0061] S5: Move the servo slide 17 to the designated position, and make the multiple fourth clamping mechanisms 171 of the servo slide 17 clamp the two clamping plates 13 respectively, which can prevent the clamping plates 13 from moving and make the upper cover 29 clamped on the bottom box 28, which is conducive to improving the welding quality; make the dual robots 18 weld along the first stage welding tracks of the two water cooling areas respectively and simultaneously until the first stage welding tracks are welded. Thus, the welding quality is good and the welding efficiency is high.

[0062] S6: Remove the servo slide 17 and the two pressure plates 13 to expose the second-stage welding tracks of the two water-cooling areas of the battery tray 200, so as to facilitate the dual robot 18 to weld along the second-stage welding track. Since the weld of the first-stage welding track has fixed the upper cover 29 and the bottom box 28 together, the upper cover 29 will not move relative to the bottom box 28. Therefore, when welding the second-stage welding track in the subsequent process, the pressure plate 13 is removed, and the battery tray 200 is only clamped by the first clamping mechanism 14 and the second clamping mechanism 15. This will not have an adverse effect on the quality of the subsequent second-stage welding track welding, and will facilitate the dual robot 18 to weld along the second-stage welding track, and further improve the welding quality of the battery tray 200.

[0063] S7: Make the dual robots 18 weld along the second stage welding tracks of the two water cooling areas of the battery tray 200 respectively until the second stage welding tracks are completed.

[0064] S8: Release the tray pressing unit and take out the welded battery tray 200.

[0065] According to the method of welding the battery tray 200 using the dual robot intelligent interactive welding station 100 of the embodiment of the present invention, a single battery tray 200 is placed on the substrate 10 and the battery tray 200 is positioned by the floating positioning mechanism 11, so that the position of the battery tray 200 on the substrate 10 is accurate, and the bottom of the battery tray 200, such as the water cooling port position at the bottom of the battery tray 200, is reliably supported by the floating support mechanism 12; at the same time, the tray clamping unit is directly pressed on the battery tray 200, and the upper cover 29 of the battery tray 200 is pressed by the pressing plate 13, and the third clamping mechanism 16 and the servo slide 17 are pressed on the pressing plate 13, so as to ensure that the upper cover 29 is pressed on the bottom box 28 when the dual robot 18 welds the battery tray 200, thereby improving the welding quality, and the first stage welding trajectory and the second stage welding trajectory of the battery tray 200 are obtained through optimized design, so as to ensure the structural strength of the battery tray 200 after welding, thereby improving the quality of the battery tray 200 after welding, and the appearance of the battery tray after welding is good. The method of welding the battery tray 200 using the dual-robot intelligent interactive welding station 100 in the embodiment of the present invention can realize fully automated welding, and can simultaneously weld the two water-cooling areas of a single battery tray 200, thereby improving the welding production efficiency and production rhythm of the battery tray 200 and saving human resources.

[0066] In some embodiments, the tray clamping unit includes a first clamping mechanism 14 and a second clamping mechanism 15 for clamping the periphery of the battery tray 200. The periphery of the battery tray 200 is directly clamped by the first clamping mechanism 14 and the second clamping mechanism 15, which on the one hand prevents the battery tray 200 from moving, and on the other hand facilitates placing the pressure plate 13 on the battery tray 200.

[0067] In some embodiments, step S1 includes the following sub-steps in sequence:

[0068] S101 : Release the floating positioning mechanism 11 , the floating supporting mechanism 12 , the pallet clamping unit and the third clamping mechanism 16 .

[0069] S102: The positioning pins 111 of the floating positioning mechanism 11 are extended upwards so as to cooperate with the positioning holes on the battery tray 200 during the lowering process of the battery tray 200 .

[0070] S103 : placing a single battery tray 200 on the substrate 10 . During the placement process, the positioning holes on the battery tray 200 cooperate with the corresponding positioning pins 111 , so that the floating positioning mechanism 11 can accurately position the battery tray 200 .

[0071] In some embodiments, step S2 is specifically as follows: the first clamping mechanism 14 is pressed on the bottom box 28, and the second clamping mechanism 15 is pressed on the upper cover 29, and then the floating support mechanism 12 is locked. It should be noted that the first clamping mechanism 14 and the second clamping mechanism 15 clamp the battery tray 200 to prevent the bottom box 28 and the upper cover 29 of the battery tray 200 from moving. While the first clamping mechanism 14 and the second clamping mechanism 15 clamp the battery tray 200, the floating support mechanism 12 floats and supports the battery tray 200, and then the floating support mechanism 12 is locked. After being locked, the floating support mechanism 12 provides reliable support for the battery tray 200, which is beneficial to improving welding quality.

[0072] In some embodiments, step S2 specifically includes the following sub-steps:

[0073] S201: First, the first pressing mechanism 14 presses the four corners of the bottom box 28 at the same time to prevent the bottom box 28 from moving.

[0074] S202: Then the second pressing mechanism 15 simultaneously presses the front side, left side and rear side of the upper cover 29 on the left and the front side, right side and rear side of the upper cover 29 on the right to prevent the upper cover 29 from moving and presses the periphery of the upper cover 29 against the bottom box 28.

[0075] S203: Finally, the floating support mechanism 12 is locked to provide reliable support for the battery tray 200 .

[0076] In some embodiments, between step S202 and step S203, a sub-step of sensing whether there are two upper covers 29 on the bottom box 28 by using an induction sensor is included to ensure that the two upper covers 29 of the battery tray 200 to be welded are both located on the bottom box 28 to avoid insufficient or no upper covers 29 on the bottom box 28. In some embodiments, in step S3, if Fig.10 As shown, the first-stage welding trajectory of each water-cooling area includes a plurality of long welding trajectories spaced left and right and extending in the front-to-back direction and a circumferential welding trajectory 24 located around the corresponding upper cover 29. The first-stage welding trajectory obtained by optimizing the design can improve the quality of the battery tray 200 after welding; a plurality of long welding trajectories are exposed through the corresponding hollow portions on the pressing plate 13, and the circumferential welding trajectory 24 surrounds the outside of the pressing plate 13. In this way, the pressing plate 13 can facilitate the welding of the first-stage welding trajectory while pressing the upper cover 29 and the bottom box 28, and the welding quality is good.

[0077] In some embodiments, in step S3, the multiple long welding tracks in each water cooling area are respectively a first welding track 21, a second welding track 22 and a third welding track 23, and the first welding track 21 is located between the second welding track 22 and the third welding track 23 in the left-right direction.

[0078] Preferably, the first welding track 21 includes a plurality of straight welding tracks and annular welding tracks connected between any two adjacent straight welding tracks.

[0079] In some embodiments, step S4 is specifically as follows: the third clamping mechanism 16 is used to clamp the left side of the pressure plate 13 on the left and the right side of the pressure plate 13 on the right, which can prevent the pressure plate 13 from moving and press the two upper covers 29 onto the bottom box 28, thereby improving the welding quality.

[0080] In some embodiments, step S5 includes the following sub-steps in sequence:

[0081] S501: Move the servo slide 17 to the designated position between the two water-cooling areas of the battery tray 200, and clamp it on the two pressure plates 13 close to the first welding track 21 to be welded through multiple fourth clamping mechanisms 171; enable the dual robots 18 to weld simultaneously and in the same direction along the first welding tracks 21 of the two water-cooling areas, with the starting point of the first welding track 21 being away from the water-cooling port at the bottom of the battery tray 200 and the end point being close to the water-cooling port.

[0082] S502: Move the servo slide 17 to one side (such as the right side) in the left-right direction to a specified position on one side, and clamp it on the two pressure plates 13 at a position close to the second welding track 22 to be welded through multiple fourth clamping mechanisms 171; enable the dual robots 18 to weld simultaneously along the second welding tracks 22 in the two water-cooled areas respectively, and the dual robots 18 will not interfere with the fourth clamping mechanisms 171 during the welding process.

[0083] S503: Move the servo slide 17 to the other side (such as the left side) in the left-right direction to the specified position on the other side, and clamp it on the two pressure plates 13 near the third welding track 23 to be welded through multiple fourth clamping mechanisms 171; enable the dual robots 18 to weld simultaneously along the third welding tracks 23 in the two water-cooled areas respectively, and the dual robots 18 will not interfere with the fourth clamping mechanisms 171 during the welding process.

[0084] That is, in step S5, the first welding track 21, the second welding track 22, the third welding track 23 and the circumferential welding track 24 of the two water-cooling areas of the single battery tray 200 are welded in sequence by using the dual robots 18 at the same time, wherein when welding the first welding track 21, the second welding track 22 and the third welding track 23, the servo slide 17 is correspondingly moved alternately in the left and right directions to different designated positions, and the servo slide 17 is pressed on the two pressing plates 13 by multiple fourth clamping mechanisms 171, close to the first welding track 21 to be welded, the second welding track 22 to be welded and the third welding track 23 to be welded. Such welding is conducive to improving the welding quality.

[0085] In some embodiments, step S5 further includes the following sub-steps:

[0086] S504: After step S503, the servo slide 17 is moved to a designated position between two water-cooling areas of the battery tray 200, and is pressed on two pressing plates 13 by a plurality of fourth pressing mechanisms 171, for example, at a position close to the first welding track 21; the dual robot 18 is made to weld the circumferential welding track 24, and during the welding process, the second pressing mechanism 15, the third pressing mechanism 16 and the fourth pressing mechanism 171 are sequentially opened and then pressed, so that the dual robot 18 does not interfere with the second pressing mechanism 15, the third pressing mechanism 16 and the fourth pressing mechanism 171. Such welding is conducive to improving the welding quality.

[0087] In some embodiments, in step S3, Fig.10 As shown, the second stage welding trajectory of each water-cooling area includes a fifth welding trajectory 25, a sixth welding trajectory 26 and a seventh welding trajectory 27; wherein the fifth welding trajectory 25 is a short welding trajectory extending left and right and away from the water-cooling port at the bottom of the battery tray 200, and the fifth welding trajectory 25 is located between the starting position of the first welding trajectory 21 and the circumferential welding trajectory 24 in the front-to-back direction and between the second welding trajectory 22 and the third welding trajectory 23 in the left-to-right direction; the sixth welding trajectory 26 is a circular ring trajectory; the seventh welding trajectory 27 is located on one side of the end position of the first welding trajectory 21 and is on the same line as the first welding trajectory 21, and the seventh welding trajectory 27 is located between the circumferential welding trajectory 24 and the water-cooling port.

[0088] The second-stage welding trajectory obtained by optimizing the design can improve the quality of the battery tray 200 after welding.

[0089] In some embodiments, step S7 includes the following sub-steps in sequence:

[0090] S601: Move the servo slide 17 away from the substrate 10;

[0091] S602: The two pressing plates 13 are removed simultaneously by the truss lifting device 19 of the dual-robot intelligent interactive welding station 100 .

[0092] Through step S7, the second stage welding tracks of the two water cooling areas of the battery tray 200 are exposed, which facilitates the dual robots 18 to weld along the second stage welding tracks.

[0093] In some embodiments, in step S8, the dual robots 18 are configured to weld the fifth welding track 25, the sixth welding track 26 and the seventh welding track 27 simultaneously and in sequence, with high welding efficiency and good welding quality.

[0094] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0095] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for welding a battery tray using a dual-robot intelligent interactive welding station, characterized in that: The dual-robot intelligent interactive welding station includes a base plate, a floating positioning mechanism, a floating support mechanism, a pressing plate, a tray clamping unit, a third clamping mechanism, a servo slide and a dual robot; the method for welding a battery tray using the dual-robot intelligent interactive welding station includes the following steps in sequence: S1: placing a single battery tray on the substrate and positioning it by the floating positioning mechanism, wherein the battery tray comprises a bottom box and two upper covers, the two upper covers are spaced apart and arranged side by side on the bottom box, the areas corresponding to the two upper covers on the battery tray are water cooling areas, and each of the water cooling areas has an optimized first-stage welding trajectory and a second-stage welding trajectory; S2: enabling the tray pressing unit to press the battery tray and correspondingly support the bottom of the battery tray through the floating support mechanism; S3: placing the two pressing plates on the two upper covers correspondingly, so that the welding track of the first stage is exposed and the welding track of the second stage is not exposed; S4: Pressing the third pressing mechanism onto the two pressing plates; S5: moving the servo slide to a specified position, and causing the plurality of fourth clamping mechanisms on the servo slide to clamp the two clamping plates, so that the dual robots weld along the first-stage welding tracks of the two water-cooling areas simultaneously, until the first-stage welding tracks are welded; S6: Remove the servo slide and the two pressing plates; S7: enabling the dual robots to weld along the second-stage welding tracks of the two water-cooling areas respectively until the second-stage welding tracks are completed; S8: Release the tray pressing unit and take out the welded battery tray.

2. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 1 is characterized in that: The tray pressing unit includes a first pressing mechanism and a second pressing mechanism for pressing the periphery of the battery tray.

3. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 2 is characterized in that: Step S1 includes the following sub-steps in sequence: S101: Loosening the floating positioning mechanism, the floating supporting mechanism, the tray pressing unit and the third pressing mechanism; S102: Extending the positioning pin of the floating positioning mechanism upward; S103: placing the battery tray on the substrate, and during the placement process, making the positioning holes on the battery tray match with the corresponding positioning pins.

4. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 2, characterized in that: Step S2 specifically includes: pressing the first pressing mechanism onto the bottom box, pressing the second pressing mechanism onto the upper cover, and then locking the floating support mechanism.

5. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 3, characterized in that: Step S2 specifically includes the following sub-steps: S201: First, the first pressing mechanism presses the four corners of the bottom box simultaneously; S202: Then, the second pressing mechanism is used to simultaneously press the front side, left side and rear side of the upper cover on the left and the front side, right side and rear side of the upper cover on the right; S203: Finally, the floating support mechanism is locked.

6. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 5, characterized in that: In step S3, the first-stage welding trajectory of each of the water-cooling areas includes a plurality of long welding trajectories spaced left and right and extending in the front-to-back direction, and a circumferential welding trajectory located around the corresponding upper cover, wherein the plurality of long welding trajectories are exposed through corresponding hollow portions on the pressure plate, and the circumferential welding trajectory surrounds the outside of the pressure plate.

7. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 6, characterized in that: In step S3, the plurality of long welding tracks in each of the water cooling areas are respectively a first welding track, a second welding track and a third welding track, and the first welding track is located between the second welding track and the third welding track in the left-right direction.

8. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 7, characterized in that: Step S4 specifically includes: enabling the third pressing mechanism to press the left side edge of the pressing plate located on the left and the right side edge of the pressing plate located on the right.

9. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 8, characterized in that: Step S5 includes the following sub-steps in sequence: S501: Move the servo slide to a designated position between the two water-cooling areas, and press the two pressing plates at positions close to the first welding track to be welded by a plurality of the fourth clamping mechanisms; enable the dual robots to weld along the first welding tracks of the two water-cooling areas simultaneously, respectively, with the starting point of the first welding track being away from the water-cooling port at the bottom of the battery tray and the end point being close to the water-cooling port; S502: Move the servo slide to one side in the left-right direction to a designated position on one side, and clamp the two pressing plates at a position close to the second welding track to be welded by a plurality of the fourth clamping mechanisms; and make the dual robots weld along the second welding tracks of the two water-cooling areas at the same time; S503: Move the servo slide to the other side in the left-right direction to the specified position on the other side, and clamp the two pressing plates close to the third welding track to be welded by multiple fourth clamping mechanisms; enable the dual robots to weld along the third welding tracks of the two water-cooling areas simultaneously.

10. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 9, characterized in that: Step S5 also includes the following sub-steps: S504: After step S503, the servo slide is moved to a designated position between the two water-cooling areas, and is clamped on the two pressure plates by a plurality of the fourth clamping mechanisms; the dual robots are enabled to weld the circumferential welding track, and during the welding process, the second clamping mechanism, the third clamping mechanism and the fourth clamping mechanism are opened and clamped in sequence so that the dual robots do not interfere with the second clamping mechanism, the third clamping mechanism and the fourth clamping mechanism.

11. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 8, characterized in that: In step S3, the second-stage welding trajectory of each of the water-cooling areas includes a fifth welding trajectory, a sixth welding trajectory and a seventh welding trajectory; wherein the fifth welding trajectory is a short welding trajectory extending left and right and away from the water-cooling port at the bottom of the battery tray, and the fifth welding trajectory is located between the starting position of the first welding trajectory and the circumferential welding trajectory in the front-to-back direction and between the second welding trajectory and the third welding trajectory in the left-to-right direction; the sixth welding trajectory is a circular ring trajectory; the seventh welding trajectory is located on one side of the end position of the first welding trajectory and is on the same line as the first welding trajectory, and the seventh welding trajectory is located between the circumferential welding trajectory and the water-cooling port.

12. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 11, characterized in that: Step S6 includes the following sub-steps in sequence: S601: moving the servo slide away from the substrate; S602: The two pressing plates are removed simultaneously by the truss lifting device of the dual-robot intelligent interactive welding station.

13. The method for welding a battery tray using a dual-robot intelligent interactive welding station according to claim 11, characterized in that: In step S7, the dual robots are enabled to weld the fifth welding track, the sixth welding track and the seventh welding track in sequence simultaneously.

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