Welding equipment

Abstract

The utility model provides welding equipment which comprises a workbench, a feeding mechanism, a transfer device, a press-fitting jig and a welding mechanism, wherein the feeding mechanism, the transfer device, the press-fitting jig and the welding mechanism are arranged on the workbench. The feeding mechanism comprises a magnetic suspension conveying line body and a plurality of battery cell jigs respectively driven by the magnetic suspension conveying line body; the transfer device is used for transferring the to-be-welded battery cell on the battery cell jig to the press-fitting jig and transferring the welded battery cell from the press-fitting jig to the vacant battery cell jig; the press-fitting jig comprises a positioning press-fitting part capable of positioning and press-fitting the battery cell conveyed by the transfer device; and the welding mechanism comprises a welding part capable of carrying out pre-spot welding on the positioned and pressed battery cell. According to the welding equipment, the flexible feeding of a plurality of battery cell jigs can be realized by utilizing the characteristics of quickness, variable distance and the like of magnetic suspension conveying, so that the problem of lower feeding efficiency is solved, and the welding operation efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a welding device. Background Art

[0002] At present, power batteries are generally composed of battery modules, which include many batteries, each of which contains a battery cell. In order to meet the discharge capacity of the battery cell, the battery cell is provided with a positive pole ear and a negative pole ear, as well as a positive top cover corresponding to the positive pole ear and a negative top cover corresponding to the negative pole ear. During the processing and assembly of the battery cell, the top cover and the aluminum shell need to be press-fitted and pre-spot-welded, and then transported to the next section through the logistics line for processing.

[0003] However, in the prior art, the welding device for pre-spot welding of battery cells has problems such as mismatch between feeding efficiency, press-fitting efficiency and welding efficiency, such as slow feeding speed, which leads to low overall operation efficiency. In addition, the existing welding device also has problems such as large footprint and small maintenance space, which cannot meet the design requirements of high-capacity solutions. Utility Model Content

[0004] In view of this, the utility model aims to provide a welding device with higher welding operation efficiency.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A welding device comprises a workbench, and a feeding mechanism, a transfer device, a press-fitting jig and a welding mechanism arranged on the workbench;

[0007] The feeding mechanism includes a magnetic suspension conveyor line, and a plurality of battery core jigs respectively driven by the magnetic suspension conveyor line;

[0008] The transfer device is used to transfer the battery cells to be welded on the battery cell jig to the press-fit jig, and to transfer the welded battery cells from the press-fit jig to the empty battery cell jig;

[0009] The press-fitting jig includes a positioning and pressing portion capable of positioning and pressing the battery cell transported by the transfer device;

[0010] The welding mechanism includes a welding portion capable of performing pre-spot welding on the battery core after positioning and press-fitting.

[0011] Furthermore, the magnetic levitation conveyor line includes a magnetic levitation frame extending along the X direction, and a magnetic levitation guide rail and a magnetic levitation stator arranged on the magnetic levitation frame. The magnetic levitation stator is arranged parallel to the magnetic levitation guide rail, and each of the battery cell fixtures is slidably arranged on the magnetic levitation guide rail through a magnetic levitation mover.

[0012] Furthermore, the welding mechanism and the magnetic levitation frame are arranged at intervals along the Y direction, the Y direction is perpendicular to the X direction, and the transfer device includes a loading and unloading mechanism and a press-fitting conveying mechanism located between the magnetic levitation frame and the welding mechanism; the loading and unloading mechanism is used to carry the battery cell between the battery cell jig and the press-fitting conveying mechanism, and the press-fitting conveying mechanism is used to transfer the battery cell between the loading and unloading mechanism and the press-fitting jig.

[0013] Furthermore, the loading and unloading mechanism includes a rotating part arranged on the workbench and capable of rotating around the Z direction, a first mounting frame arranged on the rotating part, and clamping parts arranged at both ends of the first mounting frame; when the rotating part rotates, the battery cell to be welded clamped by one of the clamping parts can be exchanged with the battery cell after welding clamped by the other clamping part, so as to convey the battery cell to be welded to the press-fitting conveying mechanism and place the battery cell after welding on the empty battery cell jig.

[0014] Furthermore, each of the clamping parts includes a first lifting module arranged on the first mounting frame, and a clamping assembly arranged on the driving end of the first lifting module, the clamping assembly is used to clamp the battery cell, and the first lifting module is used to drive the clamping assembly to perform a lifting action; and / or, the loading and unloading mechanism includes a first linear module arranged on the workbench, the rotating part is arranged on the driving end of the first linear module, and the first linear module is used to drive the rotating part to reciprocate along the X direction.

[0015] Furthermore, the press-fitting conveying mechanism includes a second linear module arranged on the workbench, and a receiving portion driven by the second linear module for receiving the battery core, and the second linear module extends along the Y direction.

[0016] Furthermore, the material receiving part is arranged on the driving end of the second linear module through a second mounting frame; the material receiving part includes a second lifting module arranged on the second mounting frame, and a material receiving platform driven to rise and fall by the second lifting module.

[0017] Furthermore, the material receiving platform is provided with a plurality of suction cups for adsorbing the battery cells; and / or the material receiving platform is extended along the Y direction, and a clamping cylinder is provided at one end of the material receiving platform close to the second lifting module, and a clamping block is provided at the other end of the material receiving platform, and the clamping cylinder can press the battery cell against the clamping block to clamp the battery cell.

[0018] Furthermore, the press-fitting conveying mechanisms are multiple and arranged at intervals along the Y direction, and the press-fitting jigs are multiple and correspond one to one to each of the press-fitting conveying mechanisms; the welding mechanism includes a welding driving part arranged on the workbench, and the welding driving part is used to drive the welding part to reciprocate along the X direction to perform pre-spot welding operations on the battery cells on each of the press-fitting jigs.

[0019] Further, the pressing fixture includes a third mounting frame arranged on the workbench, and a rotating platform arranged on the third mounting frame, the positioning pressing part is arranged on the rotating platform, and the rotating platform can rotate around the Y direction; and / or, the welding equipment includes a detection mechanism, the detection mechanism includes a contour detection unit and a detection drive part arranged on the workbench, the detection drive part is used to drive the contour detection unit to reciprocate along the X direction, and the contour detection unit is used to detect the welding contour of the battery cell pressed by the positioning pressing part.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] The welding equipment described in the utility model adopts a method of using a magnetic levitation conveyor line to drive multiple battery cell fixtures separately, and can utilize the fast and variable distance characteristics of magnetic levitation conveying to achieve flexible loading of multiple battery cell fixtures, so as to solve the problem of low loading efficiency and thereby improve the overall welding operation efficiency.

[0022] Secondly, by arranging the welding mechanism and the magnetic suspension frame at intervals along the Y direction, the Y direction is perpendicular to the X direction, and the transfer device is mainly composed of a loading and unloading mechanism and a pressing and conveying mechanism, the overall layout of the structure is more reasonable and the structure is more compact, which is beneficial to reducing the overall occupied area and improving the coordination efficiency between various mechanisms.

[0023] In addition, the loading and unloading mechanism is mainly composed of a rotating part, a first mounting frame and two clamping parts. The rotating function of the rotating part can be used to realize synchronous loading and unloading of the two clamping parts, that is, unloading can be realized while loading, thereby improving the overall welding operation efficiency. The setting of the first linear module is conducive to the displacement of the two clamping parts in the X direction, and then it can cooperate with the multiple battery cell fixtures on the magnetic suspension conveyor line, thereby improving the loading and unloading efficiency.

[0024] In addition, there are a plurality of press-fitting conveying mechanisms arranged at intervals along the Y direction, and a plurality of press-fitting jigs corresponding one to one to each press-fitting conveying mechanism. The staggered arrangement between adjacent press-fitting conveying mechanisms and adjacent press-fitting jigs can be utilized to form a spacious maintenance space to improve the convenience of maintenance. At the same time, the welding mechanism is mainly composed of a welding drive part and a welding part, which is convenient for pre-spot welding of the battery cells on each press-fitting jig to achieve uninterrupted welding of the welding part, thereby improving the welding utilization rate and welding efficiency of the welding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of the welding equipment described in the embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the battery cell according to an embodiment of the utility model;

[0028] Figure 3 It is a structural schematic diagram of the feeding mechanism described in the embodiment of the utility model;

[0029] Figure 4 This is a structural schematic diagram of the loading and unloading mechanism described in an embodiment of the utility model;

[0030] Figure 5 It is a structural schematic diagram of the press-fitting conveying mechanism according to an embodiment of the utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the press-fitting fixture according to an embodiment of the utility model;

[0032] Figure 7 for Figure 6 A schematic diagram of the structure of the structure shown in another perspective;

[0033] Figure 8 It is a structural schematic diagram of the contour detection unit according to an embodiment of the utility model;

[0034] Fig. 9 It is a structural schematic diagram of the welding mechanism described in the embodiment of the utility model;

[0035] Description of reference numerals:

[0036] 100. Workbench;

[0037] 1. Feeding mechanism; 11. Magnetic suspension conveyor line; 111. Magnetic suspension frame; 112. Magnetic suspension guide rail; 113. Magnetic suspension stator; 114. Magnetic suspension mover; 12. Battery cell fixture;

[0038] 2. Loading and unloading mechanism; 21. First linear module; 22. Rotating part; 23. First mounting frame; 24. Clamping part; 241. First lifting module; 242. Clamping assembly;

[0039] 3. Press-fitting conveying mechanism; 31. Second linear module; 32. Second mounting frame; 33. Material receiving part; 331. Second lifting module; 332. Material receiving platform; 333. Suction cup; 334. Clamping cylinder; 335. Clamping block;

[0040] 4. Press-fitting fixture; 41. Third mounting frame; 42. Rotating platform; 421. Rotating motor; 43. Positioning and pressing part; 431. Long side positioning assembly; 432. Short side positioning assembly; 433. Tail pressing block; 434. Press-fitting reference block; 435. Pneumatic slip ring;

[0041] 5. Welding mechanism; 51. Welding drive unit; 511. Fourth linear module; 512. Fourth lifting module; 52. Welding unit; 53. Welding support frame;

[0042] 6. Contour detection unit;

[0043] 7. Detection drive unit; 71. Third linear module; 72. Third lifting module;

[0044] 8. battery cell; 81. housing; 82. top cover. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0046] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0049] The present embodiment relates to a welding device, which can realize flexible loading of multiple battery cell jigs 12, thereby solving the problem of low loading efficiency, thereby having higher welding operation efficiency.

[0050] In terms of overall structure, Figures 1 to 9 As shown, the welding equipment of this embodiment includes a workbench 100, and a feeding mechanism 1, a transfer device, a press-fitting fixture 4 and a welding mechanism 5 arranged on the workbench 100. Among them, the feeding mechanism 1 includes a magnetic suspension conveying line 11, and a plurality of battery core fixtures 12 respectively driven by the magnetic suspension conveying line 11.

[0051] The transfer device is used to transfer the battery cell 8 to be welded on the battery cell jig 12 to the press-fitting jig 4, and transfer the welded battery cell 8 from the press-fitting jig 4 to the vacant battery cell jig 12. The press-fitting jig 4 includes a positioning and pressing portion 43 capable of positioning and pressing the battery cell 8 transported by the transfer device. The welding mechanism 5 includes a welding portion 52 capable of pre-spot welding the positioned and pressed battery cell 8.

[0052] Specifically, in this embodiment, as an exemplary structure, Figure 3 As shown, the magnetic levitation conveyor line 11 includes a magnetic levitation frame 111 extending along the X direction, and a magnetic levitation guide rail 112 and a magnetic levitation stator 113 arranged on the magnetic levitation frame 111. The magnetic levitation stator 113 is arranged parallel to the magnetic levitation guide rail 112, and each battery cell fixture 12 is slidably arranged on the magnetic levitation guide rail 112 through a magnetic levitation mover 114.

[0053] Here, by setting up a magnetic levitation guide rail 112 of a magnetic levitation frame 111 extending along the X direction, the cooperation between the magnetic levitation stator 113 and each magnetic levitation mover 114 can be used to realize fast and variable-distance driving of multiple battery cell fixtures 12, thereby facilitating flexible loading (a loading method that can be adjusted according to position requirements and quantity requirements) and improving overall operating efficiency.

[0054] See also Figure 1 and Figure 4 As shown, as a preferred implementation form, in this embodiment, the welding mechanism 5 and the magnetic suspension frame 111 are arranged at intervals along the Y direction, the Y direction is perpendicular to the X direction, and the transfer device includes a loading and unloading mechanism 2 and a press-fitting conveying mechanism 3 located between the magnetic suspension frame 111 and the welding mechanism 5.

[0055] The loading and unloading mechanism 2 is used to carry the battery cells 8 between the battery cell jig 12 and the press-fitting conveying mechanism 3, and the press-fitting conveying mechanism 3 is used to transfer the battery cells 8 between the loading and unloading mechanism 2 and the press-fitting jig 4. Specifically, the loading and unloading mechanism 2 is used to transfer the battery cells 8 to be welded on each battery cell jig 12 to the press-fitting conveying mechanism 3, and to transfer the welded battery cells 8 at the press-fitting conveying mechanism 3 to the vacant battery cell jig 12.

[0056] The pressing and conveying mechanism 3 is used to pre-press the battery cells 8 conveyed by the loading and unloading mechanism 2 and convey the battery cells 8 to the pressing fixture 4 , and convey the welded battery cells 8 from the pressing fixture 4 to the loading and unloading mechanism 2 .

[0057] It can be understood that by arranging the welding mechanism 5 and the magnetic suspension frame 111 at intervals along the Y direction, the Y direction is perpendicular to the X direction, and the transfer device is mainly composed of the loading and unloading mechanism 2 and the pressing and conveying mechanism 3, etc., it is beneficial to make the overall layout of the structure more reasonable and the structure more compact, which in turn helps to reduce the overall occupied area and improve the coordination and cooperation efficiency between the various mechanisms.

[0058] In the specific implementation, in this embodiment, as a preferred implementation form, the loading and unloading mechanism 2 includes a rotating part 22 that is arranged on the workbench 100 and can rotate around the Z direction, a first mounting frame 23 arranged on the rotating part 22, and a clamping part 24 arranged at both ends of the first mounting frame 23.

[0059] When the rotating part 22 rotates, the battery cell 8 to be welded clamped by one clamping part 24 can be exchanged with the welded battery cell 8 clamped by the other clamping part 24, so as to convey the battery cell 8 to be welded to the pressing and conveying mechanism 3, and place the welded battery cell 8 on the empty battery cell fixture 12.

[0060] The unloading mechanism is mainly composed of a rotating part 22, a first mounting frame 23 and two clamping parts 24. The rotating function of the rotating part 22 can be used to realize synchronous loading and unloading of the two clamping parts 24, that is, unloading can be achieved while loading, thereby improving the overall welding operation efficiency.

[0061] Also, see Figure 4 As shown, as a preferred implementation form, in this embodiment, each clamping part 24 includes a first lifting module 241 provided on the first mounting frame 23, and a clamping assembly 242 provided at the driving end of the first lifting module 241, the clamping assembly 242 is used to clamp the battery cell 8, and the first lifting module 241 is used to drive the clamping assembly 242 to perform lifting actions. In this way, the position adjustment of each clamping part 24 in the X direction and the Z direction can be achieved, so as to facilitate the clamping of the battery cell 8.

[0062] At the same time, as a preferred implementation form, the loading and unloading mechanism 2 of this embodiment includes a first linear module 21 arranged on the workbench 100, the rotating part 22 is arranged on the driving end of the first linear module 21, and the first linear module 21 is used to drive the rotating part 22 to reciprocate along the X direction.

[0063] The advantage of such a configuration is that it can facilitate the displacement of the two clamping parts 24 in the X direction, and then can cooperate with the multiple battery fixtures 12 on the magnetic suspension conveyor line 11, thereby improving the loading and unloading efficiency. In the specific structure, the rotating part 22 can be arranged on the driving end of the first linear module 21 through a support column.

[0064] In addition, in this embodiment, as a preferred implementation form, see Figure 3 As shown, the press-fitting conveying mechanism 3 includes a second linear module 31 disposed on the workbench 100, and a receiving portion 33 driven by the second linear module 31 for receiving the battery core 8, and the second linear module 31 extends along the Y direction, thereby achieving guided movement of the receiving portion 33 in the Y direction.

[0065] Furthermore, as a preferred implementation form, in this embodiment, the material receiving portion 33 is disposed on the driving end of the second linear module 31 through the second mounting frame 32. At the same time, the material receiving portion 33 includes a second lifting module 331 disposed on the second mounting frame 32, and a material receiving platform 332 driven to rise and fall by the second lifting module 331, and the material receiving platform 332 is used to receive the battery cell 8.

[0066] It can be understood that by setting up the second lifting module 331, the Z-axis displacement of the material receiving platform 332 can be achieved, and with the cooperation of the second linear module 31, the material receiving platform 332 can be moved in the Y and Z directions, thereby facilitating the material receiving and feeding operations of the material receiving platform 332.

[0067] Furthermore, in this embodiment, as a preferred implementation form, a plurality of suction cups 333 for adsorbing the battery cells 8 are provided on the receiving platform 332, so as to adsorb the battery cells 8 and improve the stability and reliability of transporting the battery cells 8. Of course, the number and arrangement of the suction cups 333 can be set and adjusted according to the actual adsorption requirements of the battery cells 8. For example, they can be specifically set to three or six arranged at intervals along the Y direction.

[0068] At the same time, in this embodiment, as a preferred implementation form, the material receiving platform 332 is extended along the Y direction, and a clamping cylinder 334 is provided at one end of the material receiving platform 332 close to the second lifting module 331, and a clamping block 335 is provided at the other end of the material receiving platform 332. The clamping cylinder 334 can push the battery cell 8 against the clamping block 335 to clamp the battery cell 8.

[0069] The advantage of such a configuration is that it can combine the methods of adsorbing the battery cell 8 and clamping the battery cell 8 to effectively fix the battery cell 8 and prevent the battery cell 8 from falling or being damaged.

[0070] In addition, as a preferred implementation form, in this embodiment, combined with Figure 1 and Fig. 9As shown, there are a plurality of press-fitting conveying mechanisms 3 arranged at intervals along the Y direction, and there are a plurality of press-fitting jigs 4 corresponding one to one to each press-fitting conveying mechanism 3 .

[0071] Thus, a spacious maintenance space can be formed by utilizing the staggered arrangement between adjacent press-fitting conveying mechanisms 3 and adjacent press-fitting jigs 4 to improve the convenience of maintenance.

[0072] At the same time, the welding mechanism 5 includes a welding driving part 51 disposed on the workbench 100, and the welding driving part 51 is used to drive the welding part 52 to reciprocate along the X direction to perform a pre-spot welding operation on the battery cells 8 on each press-fitting fixture 4. In this way, one welding mechanism 5 can perform a pre-spot welding operation on the battery cells 8 on each press-fitting fixture 4, and realize uninterrupted welding of the welding part 52, thereby improving the welding utilization rate and welding efficiency of the welding mechanism 5.

[0073] In addition, as a preferred implementation form, in this embodiment, see Figure 6 and Figure 7 As shown, the press-fitting fixture 4 includes a third mounting frame 41 disposed on the workbench 100 and a rotating platform 42 disposed on the third mounting frame 41 . The positioning press-fitting portion 43 is disposed on the rotating platform 42 , and the rotating platform 42 can rotate around the Y direction.

[0074] At the same time, as a preferred implementation form, in this embodiment, see Figure 1 and Figure 8 As shown, the welding device includes a detection mechanism. The detection mechanism includes a contour detection unit 6 and a detection drive unit 7 arranged on a workbench 100, the detection drive unit 7 is used to drive the contour detection unit 6 to reciprocate along the X direction, and the contour detection unit 6 is used to detect the welding contour of the battery cell 8 pressed by the positioning press-fitting part 43.

[0075] It is understandable that the provision of the rotating platform 42 is conducive to rotating the battery cell 8 after positioning and pressing, thereby facilitating the contour detection unit 6 to detect the appearance contour of the welding position of the battery cell 8, thereby ensuring the welding quality.

[0076] In the specific structure, the detection drive part 7 includes a third linear module 71 extending along the X direction, and a third lifting module 72 arranged at the driving end of the third linear module 71. The contour detection unit 6 is arranged at the driving end of the third lifting module 72. The third linear module 71 drives the third lifting module 72 to move in the X direction, and the third lifting module 72 drives the contour detection unit 6 to move in the Z direction to facilitate the detection of the battery cell 8.

[0077] During specific implementation, relevant structural parts not mentioned in the pressing fixture 4 of this embodiment can refer to the common pressing equipment in the prior art. For example, it also includes a rotating motor 421 for driving the rotating platform 42 to rotate, and a long side positioning component 431 and a short side positioning component 432 arranged on the rotating platform 42. The long side positioning component 431 is used to position and compress the battery cell 8 on both sides of the Z direction, and the short side positioning component 432 is used to position and compress the battery cell 8 on both sides of the X direction. The number and arrangement of the long side positioning components 431 and the short side positioning components 432 can be set according to actual positioning and pressing requirements. For example, the long side positioning components 431 and the short side positioning components 432 are both arranged at intervals along the Y direction.

[0078] For another example, the press-fitting fixture 4 of this embodiment further includes a tail press-fitting block 433 and a press-fitting reference block 434 disposed on the rotating platform 42 for pressing the top cover 82 and the shell 81 of the battery cell 8, wherein the tail press-fitting block 433 is driven by the tail cylinder to reciprocate along the Y direction to cooperate with the press-fitting reference block 434 to press the top cover 82 and the shell 81 in the Y direction. For another example, the press-fitting fixture 4 further includes a pneumatic-electric slip ring 435 for connecting an external power source with related electrical devices such as the rotating motor 421.

[0079] In addition, it should be noted that the welding mechanism 5 of this embodiment preferably adopts a laser welding machine, such as Fig. 9 As shown in the figure, in its specific structure, the welding drive part 51 is arranged on the workbench 100 through the welding support frame 53, the welding drive part 51 includes a fourth linear module 511 for driving the welding part 52 to reciprocate in the X direction, and a fourth lifting module 512 arranged on the driving end of the fourth linear module 511, the welding part 52 includes a laser and a galvanometer arranged on the driving end of the fourth lifting module 512, and the welding part 52 is driven by the fourth lifting module 512 to rise and fall in the Z direction.

[0080] Moreover, it is still worth mentioning that the relevant structural parts not mentioned in the welding equipment of this embodiment can refer to the various structures in the welding equipment known to technical personnel in this field. For example, the first linear module 21, the second linear module 31, the third linear module 71 and the fourth linear module 511 can all adopt common linear motors, the contour detection unit 6 adopts a common contour meter, and the clamping jaw assembly is mainly composed of two relatively arranged clamping jaws and a clamping jaw cylinder for driving the two clamping jaws to move closer to or away from each other.

[0081] Furthermore, a preferred arrangement of the welding equipment of this embodiment is as follows Figure 1As shown, there are six battery cell jigs 12 in the feeding mechanism 1, six press-fitting jigs 4 and press-fitting conveying mechanisms 3 are arranged in intervals along the X direction, and each press-fitting jig 4 corresponds to each press-fitting conveying mechanism 3 one by one, and there are two rotating parts 22 (each with two clamping parts 24) in the loading and unloading mechanism 2 are arranged in intervals along the X direction. At the same time, the feeding mechanism 1, each press-fitting jig 4, each press-fitting conveying mechanism 3 and the loading and unloading mechanism 2 are two groups of devices arranged radially in the Y direction, and at least one detection mechanism and two welding mechanisms 5 are provided between the two groups of devices.

[0082] The advantage of such a layout is that it can ensure a good matching effect between various processes such as loading, unloading, pressing and welding, that is, maximize efficiency.

[0083] In this embodiment, Figure 2 The figure shows the appearance and welding point positions of the shell 81 and the top cover 82 in the battery cell 8 after welding. In addition, the welding equipment of this embodiment is based on the above layout. During specific implementation, the battery cells 8 are first fed by two magnetic suspension conveyor lines 11 on the left and right sides (Y direction). Specifically, the magnetic suspension stator 113 has a coil inside. When energized, it generates a magnetic field to drive the magnetic suspension mover 114 to move. The magnetic suspension mover 114 drives the battery cell fixture 12 and the battery cells 8 to feed. Moreover, the magnetic suspension on each side can simultaneously lower 6 battery cells 8 and simultaneously load 6 battery cells 8, that is, 12 battery cells 8 are loaded and unloaded at a time, which makes the loading and unloading efficiency higher.

[0084] Secondly, the loading and unloading mechanism 2 is used to complete the above-mentioned loading and unloading operations. Specifically, the first linear module 21 can drive each rotating part 22 to adjust the position in the X direction to correspond to the press-fitting conveying mechanism 3 in different positions. Each rotating part 22 can rotate 180° to drive the two clamping parts 24 to interchange positions, and the first lifting module 241 in each clamping part 24 can drive the clamping assembly 242 to lift and lower to grab the battery cell 8 to be welded, or place the welded battery cell 8.

[0085] In addition, after the loading and unloading mechanism 2 places the battery cell 8 on the receiving platform 332, the clamping cylinder 334 is pushed forward to push the battery cell 8 to the front end, and cooperates with the clamping block 335 to clamp the battery cell 8, and then the battery cell 8 is sucked by each suction cup 333. Subsequently, the second linear module 31 drives the second mounting frame 32 and the receiving part 33 to move forward in the Y direction as a whole, and the battery cell 8 is delivered to the pressing fixture 4. Then the second lifting module 331 drives the receiving platform 332 to descend to a certain height, and finally the second linear module 31 drives the receiving part 33 to retreat as a whole, so that the receiving platform 332 is withdrawn from the pressing fixture 4, thereby completing the process of conveying the battery cell 8 into the pressing fixture 4.

[0086] Furthermore, when the second linear module 31 and the second lifting module 331 drive the receiving platform 332 to send the battery cell 8 into the pressing fixture 4, the pressing fixture 4 first positions the short side of the battery cell 8 through the short side positioning component 432, and the front and rear ends (Y direction) of the battery cell 8 are simultaneously positioned on the short side, and then the long side positioning component 431 is used to position the long side of the battery cell 8 (the front and rear sections in the Y direction are also positioned simultaneously). After the positioning of the battery cell 8 is completed, the rear pressing block 433, under the push of the rear cylinder, pushes the battery cell 8 to slide to the pressing reference block 434 to complete the positioning and pressing.

[0087] After the positioning and pressing are completed, pre-welding inspection is carried out. The contour detection unit 6 is displaced in the X direction under the drive of the third linear module 71 to detect the gap and steps between the top cover 82 and the aluminum shell after pressing. During the detection process, the rotating platform 42 drives the battery cell 8 to rotate, which is convenient for the contour detection unit 6 to detect the four sides of the battery cell 8. When detecting the short side of the battery cell 8, the contour meter is far away from the battery cell 8. At this time, the contour detection unit 6 can be driven by the third lifting module 72 to rise to shorten the detection distance and ensure the detection quality.

[0088] After the inspection is completed, the welding part 52 performs pre-spot welding, specifically: the laser and the galvanometer in the welding part 52 can be driven by the fourth lifting module 512 to move up and down along the Z direction, and can also be driven by the fourth linear module 511 to move along the X direction to complete the switching between the various press-fitting fixtures 4, that is, the switching between the various welding workstations. After the pre-spot welding is completed, the next process is entered (for example, the welded battery cell 8 is unloaded in turn through the press-fitting conveying mechanism 3, the loading and unloading mechanism 2 and the feeding mechanism 1).

[0089] In addition, it is worth mentioning that, based on the above-mentioned structural layout, the matching effect between the various mechanisms of the welding equipment of this embodiment is good, the utilization rate of each mechanism is high, and the production capacity can reach 36PPM. Compared with the maximum production capacity of 16PPM of the traditional welding production line, the improvement effect is obvious, which can solve the problem of insufficient existing production capacity, and while maintaining maintenance space, the overall structure of the equipment is compact and occupies a small area.

[0090] The welding equipment of this embodiment adopts a magnetic levitation conveyor line 11 to drive multiple battery cell fixtures 12 respectively. It can utilize the fast and variable distance characteristics of magnetic levitation conveying to achieve flexible loading of multiple battery cell fixtures 12, so as to solve the problem of low loading efficiency and thus improve the overall welding operation efficiency.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding device, characterized in that: It includes a workbench, and a feeding mechanism, a transfer device, a pressing fixture and a welding mechanism arranged on the workbench; The feeding mechanism includes a magnetic suspension conveyor line, and a plurality of battery core jigs respectively driven by the magnetic suspension conveyor line; The transfer device is used to transfer the battery cells to be welded on the battery cell jig to the press-fit jig, and to transfer the welded battery cells from the press-fit jig to the empty battery cell jig; The press-fitting jig includes a positioning and pressing portion capable of positioning and pressing the battery cell transported by the transfer device; The welding mechanism includes a welding portion capable of performing pre-spot welding on the battery core after positioning and press-fitting.

2. The welding device according to claim 1, characterized in that: The magnetic levitation conveyor line includes a magnetic levitation frame extending along the X direction, and a magnetic levitation guide rail and a magnetic levitation stator arranged on the magnetic levitation frame. The magnetic levitation stator is arranged parallel to the magnetic levitation guide rail, and each of the battery cell fixtures is slidably arranged on the magnetic levitation guide rail through a magnetic levitation mover.

3. The welding device according to claim 2, characterized in that: The welding mechanism and the magnetic suspension frame are arranged at intervals along the Y direction, the Y direction is perpendicular to the X direction, and the transfer device includes a loading and unloading mechanism and a press-fitting conveying mechanism located between the magnetic suspension frame and the welding mechanism; The loading and unloading mechanism is used to carry the battery cell between the battery cell jig and the press-fitting conveying mechanism, and the press-fitting conveying mechanism is used to transfer the battery cell between the loading and unloading mechanism and the press-fitting jig.

4. The welding device according to claim 3, characterized in that: The loading and unloading mechanism comprises a rotating part arranged on the workbench and capable of rotating around the Z direction, a first mounting frame arranged on the rotating part, and clamping parts respectively arranged at two ends of the first mounting frame; When the rotating part rotates, the battery cell to be welded clamped by one of the clamping parts can be exchanged with the welded battery cell clamped by the other clamping part, so as to convey the battery cell to be welded to the pressing and conveying mechanism, and place the welded battery cell on the empty battery cell jig.

5. The welding device according to claim 4, characterized in that: Each of the clamping parts comprises a first lifting module arranged on the first mounting frame, and a clamping assembly arranged at a driving end of the first lifting module, the clamping assembly is used to clamp the battery cell, and the first lifting module is used to drive the clamping assembly to perform lifting action; and / or, The loading and unloading mechanism includes a first linear module arranged on the workbench, the rotating part is arranged on the driving end of the first linear module, and the first linear module is used to drive the rotating part to reciprocate along the X direction.

6. The welding device according to claim 3, characterized in that: The press-fitting conveying mechanism includes a second linear module arranged on the workbench, and a receiving portion driven by the second linear module for receiving the battery core, and the second linear module extends along the Y direction.

7. The welding device according to claim 6, characterized in that: The material receiving portion is mounted on the driving end of the second linear module through a second mounting frame; The material receiving portion includes a second lifting module arranged on the second mounting frame, and a material receiving platform driven to rise and fall by the second lifting module.

8. The welding device according to claim 7, characterized in that: The receiving platform is provided with a plurality of suction cups for adsorbing the battery core; and / or, The material receiving platform is extended along the Y direction, and a clamping cylinder is provided at one end of the material receiving platform close to the second lifting module, and a clamping block is provided at the other end of the material receiving platform. The clamping cylinder can press the battery cell against the clamping block to clamp the battery cell.

9. The welding device according to claim 3, characterized in that: The press-fitting conveying mechanisms are multiple and spaced apart along the Y direction, and the press-fitting jigs are multiple and correspond to each of the press-fitting conveying mechanisms one by one; The welding mechanism includes a welding driving part arranged on the workbench, and the welding driving part is used to drive the welding part to reciprocate along the X direction to perform pre-spot welding operations on the battery cells on each of the press-fitting jigs.

10. The welding device according to any one of claims 1 to 9, characterized in that: The press-fitting fixture comprises a third mounting frame arranged on the workbench, and a rotating platform arranged on the third mounting frame, the positioning press-fitting portion is arranged on the rotating platform, and the rotating platform can rotate around the Y direction; and / or, The welding equipment includes a detection mechanism, which includes a contour detection unit and a detection drive unit arranged on the workbench, the detection drive unit is used to drive the contour detection unit to reciprocate along the X direction, and the contour detection unit is used to detect the welding contour of the battery cell pressed by the positioning and pressing part.

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