Battery pole group casing production line and battery production system

Abstract

The invention provides a battery pole group casing production line and a battery production system.The battery pole group casing production line comprises a magnetic suspension conveying line, a mover jig movably arranged on the magnetic suspension conveying line, and a battery pole group casing production line arranged on the mover jig, the first polarity cover plate pre-press-fitting device and the cover plate press-fitting spot welding device are sequentially arranged in the conveyed direction of the rotor jig. When the mover jig moves to the first polarity cover plate pre-press-fitting device, a battery shell is loaded, a pole group is arranged in the battery shell, and a first polarity cover plate is welded to a first polarity tab of the pole group; the first polarity cover plate pre-press-fitting device can pre-press a first polarity cover plate on the rotor jig into a battery shell, the battery shell subjected to pre-press-fitting is conveyed to the cover plate press-fitting spot welding device through the rotor jig, and pre-spot welding is conducted after the first polarity cover plate is pressed in place through the cover plate press-fitting spot welding device. According to the battery-level pack casing production line, the number of stations can be reduced, and the occupied area of the production line is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and in particular to a battery pole group shelling production line. The present invention also relates to a battery production system provided with the battery pole group shelling production line. Background Art

[0002] With the continuous development of batteries, square shell blade batteries are becoming more and more popular among the public due to their high safety, high heat dissipation and high stability. Square shell blade batteries usually have poles on both sides along their length. The assembly steps are to press the positive and negative cover plates on the two open ends of the battery shell respectively, and then weld them to the battery shell.

[0003] The existing square shell blade battery assembly is completed by a dedicated assembly production line. In order to improve the assembly efficiency, speeding up the assembly production line has become an industry consensus. However, the equipment under the traditional mechanism has reached the bottleneck of the design. In the related technology, a high-speed production line is disclosed, which uses a magnetic levitation conveyor line to carry a movable jig to transport the batteries in the assembly process. The assembly method of the cover plate and the battery shell of this high-speed production line is that the battery shell is removed and the cover plate is pressed by the pressing equipment, and the cover plate and the battery shell are welded by the welding device, and finally the pressing equipment is sent back to the jig to complete the assembly. In this way, the single assembly time of the battery cover plate is relatively long. The jig needs to wait for the battery shell to be welded and then carry the battery shell for transportation again. In order to adapt to the production rhythm of the production line, high production capacity can only be achieved by stacking more workstations, which makes the production line longer and the equipment occupies a large area. Summary of the invention

[0004] In view of this, the present invention aims to provide a battery electrode assembly shelling production line to reduce the floor space of the production line.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A battery pole group shell production line, comprising a magnetic suspension conveyor line, a mover fixture movably arranged on the magnetic suspension conveyor line, and a first polarity cover plate pre-pressing device and a cover plate pressing spot welding device sequentially arranged along the conveying direction of the mover fixture;

[0007] When the mover jig moves to the first polarity cover plate pre-pressing device, it is loaded with a battery shell, in which a pole group is housed, and a first polarity pole ear of the pole group is welded to a first polarity cover plate; the first polarity cover plate pre-pressing device can pre-press the first polarity cover plate on the mover jig into the battery shell, and the pre-pressed battery shell is transported by the mover jig to the cover plate pressing and spot welding device, and the cover plate pressing and spot welding device performs pre-spot welding after pressing the first polarity cover plate into place.

[0008] Further, the cover plate press-fitting and spot welding device includes a mounting base, a welding part, a lifting part, and a clamping part;

[0009] The welding part is arranged on the mounting base, the lifting part is connected to the mounting base in a liftable manner, and the clamping part is rotatably connected to the lifting part in a drivable manner;

[0010] The clamping part can clamp and move the battery case upward away from the mover jig, and press-fit the first-polarity cover plate in place. The battery case is flipped due to the rotation of the clamping part, so that the side where the battery case intersects with the first-polarity cover plate can be in the weldable area of the welding part.

[0011] Further, the clamping part includes a clamping seat, a jaw assembly, and a press-fitting part;

[0012] The clamping seat is rotatably connected to the lifting part in a drivable manner; the jaw assembly is movably arranged on the clamping seat and can clamp both ends in the width direction of the battery case; the press-fitting part can move on the clamping seat to push the first-polarity cover plate towards the battery case or away from the first-polarity cover plate.

[0013] Further, the magnetic levitation conveyor line includes a first conveyor line, a second conveyor line, and a lifting conveyor device. The conveying plane of the second conveyor line is higher than the conveying plane of the first conveyor line; both ends of the second conveyor line are connected with the lifting conveyor device and are connected to both ends of the first conveyor line through the lifting conveyor device to form the annular closed magnetic levitation conveyor line; a passage for entering and exiting the inside of the magnetic levitation conveyor line is formed below the second conveyor line.

[0014] Further, the magnetic levitation conveyor line is in a "mouth" shape and has four conveying sections connected in sequence, and the connection of the two conveying sections is connected by a turntable.

[0015] Further, a second-polarity cover plate feeding device, a second-polarity cover plate batching device, and an ear welding device are arranged downstream of the cover plate press-fitting and spot welding device;

[0016] The second-polarity cover plate feeding device is arranged outside the magnetic levitation conveyor line and can feed the second-polarity cover plate to the mover jig; the second-polarity cover plate batching device is arranged inside the magnetic levitation conveyor line, can store the second-polarity cover plate, and transports the second-polarity cover plate to the second-polarity cover plate feeding device via a manipulator; the ear welding device is arranged downstream of the second-polarity cover plate feeding device and can weld the second-polarity ear of the pole group to the second-polarity cover plate.

[0017] Furthermore, a weld mark profile detection device and a first visual detection device are provided downstream of the tab welding device;

[0018] The weld mark contour detection device can detect the quality of welding between the second polarity tab and the second polarity cover plate, and the first visual detection device can detect the size and position of the weld mark between the second polarity tab and the second polarity cover plate.

[0019] Furthermore, at least two glue sticking devices are provided downstream of the tab welding device, and the glue sticking devices can perform glue sticking protection on the weld marks of the second polarity tab and the second polarity cover plate;

[0020] The glue sticking device is divided into a common glue sticking device and a standby glue sticking device. When the common glue sticking device stops working, the standby glue sticking device can replace the stopped glue sticking device to perform glue sticking work.

[0021] Furthermore, a bending device and a second polarity cover plate pre-pressing device are sequentially provided downstream of the tab welding device;

[0022] The bending device can bend the second polarity tab to align the second polarity cover plate with the opening of the battery housing; the second polarity cover plate pre-pressing device can pre-press the second polarity cover plate into the battery housing.

[0023] Furthermore, a second polarity pole lug deviation correction device and a second polarity pole lug position detection device are provided upstream of the second polarity cover plate feeding device, and the second polarity pole lug deviation correction device can correct the second polarity pole lug to a preset position, and the second polarity pole lug position detection device can detect the position of the second polarity pole lug relative to the battery housing.

[0024] Furthermore, upstream of the first polarity cover plate pre-pressing device is provided with a pole group loading conveyor line, a first transport device, a shell feeding device, and a second transport device;

[0025] The pole group loading conveyor line is capable of conveying the pole group welded with the first polarity cover plate; the first transport device is capable of moving the pole group of the pole group loading conveyor line to the shell entry device; the second transport device is capable of moving the battery shell on the movable fixture to the shell entry device, or moving the battery shell on the shell entry device to the movable fixture; the shell entry device is capable of inserting the pole group into the battery shell.

[0026] Furthermore, a battery shell feeding device is provided upstream of the shell feeding device;

[0027] The battery shell loading device includes a battery shell storage bin capable of storing the battery shells, and a third transport device capable of loading the battery shells in the battery shell storage bin onto the mover fixture.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] The battery stage group shelling production line described in the present invention can enable the movable fixture to quickly convey the battery shell equipped with the stage group and the first polarity cover plate by arranging the magnetic levitation conveyor line. The first polarity cover plate pre-pressing device first pre-presses the first polarity cover plate, and the battery shell can be pressed into the first polarity cover plate basically in place without leaving the movable fixture, and then the cover plate pressing spot welding device is used for welding. The pre-pressing operation and the welding operation can be carried out separately and simultaneously, which improves the efficiency of the polarity cover plate pressing and welding, reduces the waiting time of the movable fixture, and further reduces the workstations, thereby reducing the floor space of the production line.

[0030] The clamping part can press the first polarity cover plate into the battery shell and lift it up through the lifting part. After the clamping part rotates, the welding part can weld the junction between the first polarity cover plate and the battery shell. The first polarity cover plate is accurately installed and the welding is relatively firm.

[0031] The clamping claw assembly has a relatively stable clamping effect on both ends of the battery shell in the width direction, and the movable pressing part can stably press the first polarity cover plate into the battery shell.

[0032] By setting the first conveyor line and the second conveyor line at different heights and connecting them through a lifting conveying device, the magnetic levitation conveyor line can form a closed loop, so that the mover fixture can operate in a one-way cycle; at the same time, the channel formed under the second conveyor line can provide a logistics channel and a personnel channel, opening up the inside and outside of the magnetic levitation conveyor line.

[0033] By making the magnetic levitation conveyor line into a "mouth" shape, the entire production line can be approximately rectangular, which can make better use of the site. The turntable can flexibly adjust the direction of the battery shell to meet the working needs of the production line equipment.

[0034] The second polarity cover plate batching device is arranged on the inner side of the magnetic levitation conveyor line, so that the second polarity cover plate can be transported to the inner side of the magnetic levitation conveyor line for storage, which is beneficial to the centralized transportation of materials on the production line. Meanwhile, the storage of the second polarity cover plate does not occupy the space outside the magnetic levitation conveyor line. The second polarity cover plate loading device is arranged on the outer side of the magnetic levitation conveyor line, so that the battery shell can load the second polarity cover plate into place without turning.

[0035] The weld mark contour detection device can detect the welding quality and screen out defective batteries. The first visual detection device can assist in detecting the size and position of the weld mark to ensure that the weld mark is relatively standard.

[0036] Setting up common and spare gluing devices can keep the gluing operation in normal operation. When the common gluing device needs to be shut down, it can be switched to the spare gluing device in time to perform the gluing operation, thus ensuring the normal operation of the production line.

[0037] The bending device and the second polarity cover plate pre-pressing device can press the second polarity cover plate into the battery housing more accurately.

[0038] By setting up a second polarity tab correction device, the second polarity tab before welding can be corrected so that the second polarity tab can be in a relatively accurate position relative to the battery case; the second polarity tab position detection device can detect the position of the second polarity tab and screen out batteries that still do not meet the second polarity tab position requirements after correction.

[0039] By setting up a stage group feeding conveyor line, the pole group with the first polarity cover plate welded can be provided to the shell entry device in a timely and reliable manner. When performing the shell entry operation, the first conveyor device removes the pole group on the stage group feeding conveyor line, and the second conveyor device removes the battery shell from the mover fixture. The battery shell and the pole group are assembled on the shell entry device, and then the second conveyor device returns the assembled battery to the mover fixture, which is transferred to the next workstation by the mover fixture.

[0040] By providing a battery shell feeding device, the battery shells can be stored and the battery shells can be fed to the mover fixture in time.

[0041] Another object of the present invention is to provide a battery production system, wherein the battery production system is provided with the above-mentioned battery electrode assembly shelling production line.

[0042] The battery production system of the present invention has the same beneficial effects as the battery pole assembly shell production line described above relative to the prior art, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0044] Figure 1 It is a structural schematic diagram of a battery electrode assembly shell production line according to the first embodiment of the present invention;

[0045] Figure 2 This is a schematic structural diagram of the first conveying section according to the first embodiment of the present invention;

[0046] Figure 3 This is a schematic structural diagram of the second conveying section according to the first embodiment of the present invention;

[0047] Figure 4This is a schematic structural diagram of the third conveying section according to the first embodiment of the present invention;

[0048] Figure 5 This is a schematic structural diagram of the fourth conveying section according to the first embodiment of the present invention;

[0049] Figure 6 It is a structural schematic diagram of the cover plate press-fit spot welding device and the mover fixture according to the first embodiment of the present invention.

[0050] Description of reference numerals:

[0051] 1. Magnetic suspension conveyor line; 101. First conveyor line; 102. Second conveyor line; 103. Lifting conveyor device; 1a. First conveyor section; 1b. Second conveyor section; 1c. Third conveyor section; 1d. Fourth conveyor section;

[0052] 2. Moving fixture; 201. Moving seat; 202. Supporting part; 203. Pressing part;

[0053] 3. Pre-pressing device for the first polarity cover plate;

[0054] 4. Cover plate press-fit spot welding device; 401. Mounting base; 402. Welding part; 403. Lifting part; 404. Clamping part; 4041. Clamping seat; 4042. Clamping claw assembly; 4043. Press-fitting part;

[0055] 5. Second polarity cover plate feeding device;

[0056] 6. Second polarity cover plate batching device; 601. Manipulator;

[0057] 7. Tab welding device; 8. Welding mark contour detection device; 9. First visual detection device; 10. Gluing device; 11. Bending device; 12. Second polarity cover plate pre-pressing device; 13. Second polarity tab deviation correction device; 14. Second polarity tab position detection device; 15. Pole group feeding conveyor line; 16. First transportation device; 17. Shelling device; 18. Second transportation device;

[0058] 19. Battery shell loading device; 1901. Battery shell storage bin; 1902. Third transport device;

[0059] 20. Turntable; 21. Jig dust removal device; 22. Second visual inspection device; 23. Battery shell deviation correction device; 24. First waste removal device; 25. Third visual inspection device; 26. First dust removal device; 27. Second dust removal device; 28. Fourth visual inspection device; 29. ​​Second waste removal device. DETAILED DESCRIPTION

[0060] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0061] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., 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", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0062] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "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 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.

[0063] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0064] Embodiment 1

[0065] This embodiment relates to a battery electrode assembly shelling production line to reduce the floor space occupied by the production line.

[0066] In terms of overall structure, a battery pole group shelling production line in this embodiment includes a magnetic levitation conveyor line, a mover fixture movably arranged on the magnetic levitation conveyor line, and a first polarity cover plate pre-pressing device and a cover plate pressing spot welding device arranged in sequence along the conveying direction of the mover fixture.

[0067] When the mover jig moves to the first polarity cover plate pre-pressing device, it is loaded with a battery housing, in which a pole group is installed, and the first polarity pole lug of the pole group is welded to the first polarity cover plate. The first polarity cover plate pre-pressing device can pre-press the first polarity cover plate on the mover jig into the battery housing, and the pre-pressed battery housing is transported by the mover jig to the cover plate pressing spot welding device, which presses the first polarity cover plate into place and then performs pre-spot welding.

[0068] As configured above, the battery stage group shelling production line of this embodiment can enable the movable fixture to quickly convey the battery shell equipped with the stage group and the first polarity cover plate by arranging the magnetic levitation conveyor line. The first polarity cover plate pre-pressing device first pre-presses the first polarity cover plate, and the battery shell can be pressed into the first polarity cover plate basically in place without leaving the movable fixture, and then the cover plate pressing spot welding device is used for welding. The pre-pressing operation and the welding operation can be carried out separately and simultaneously, which improves the efficiency of the polarity cover plate pressing and welding, reduces the waiting time of the movable fixture, and then can reduce the work station, so as to reduce the floor space of the production line.

[0069] Based on the above overall introduction, refer to Figures 1 to 5 As shown, specifically, the magnetic levitation conveyor line 1 can be understood as a magnetic levitation conveying device that uses the principle of magnetic levitation to achieve transmission (for example, the CN220299746U magnetic levitation conveying device and magnetic levitation conveyor line 1 disclosed in the Chinese patent document). The transmission principle and transmission structure of the device are both prior art in the field and will not be repeated here. The battery stage group shell production line of this embodiment uses the pole group, battery shell and second polarity cover plate welded with the first polarity cover plate as raw materials. The state of the battery produced is: the pole group shell is completed, the first polarity cover plate is pre-welded to the battery shell, and the second polarity cover plate is welded to the pole group and pre-pressed into the battery shell. Of the first polarity and the second polarity, one is the positive pole of the battery, and the other is the negative pole of the battery.

[0070] Among them, regarding the specific structure of the cover plate press-fit spot welding device 4, refer to Figure 6 As shown, the cover plate press-fit spot welding device 4 of this embodiment includes a mounting base 401, a welding part 402, a lifting part 403 and a clamping part 404. The mounting base 401 is clamped above the magnetic suspension conveyor line 1, and the welding part 402 is arranged on the mounting base 401, and the welding direction is horizontally toward the lifting part 403. A guide rail is arranged on the mounting base 401, and the lifting part 403 is connected to the mounting base 401 along the guide rail so as to be movable and removable. The specific driven mode can be an electric push rod, a linear motor or a cylinder. In this embodiment, an electric push rod is used to control the lifting of the lifting part 403. The clamping part 404 is connected to the lifting part 403 in a driven rotation manner. The clamping portion 404 of the welding portion 402 can clamp and move the battery shell upward to detach from the mover fixture 2, and press the first polarity cover plate into place. The battery shell is flipped due to the rotation of the clamping portion 404, so that the side where the battery shell and the first polarity cover plate intersect can be in the weldable area of ​​the welding portion 402.

[0071] Through the above arrangement, the clamping part 404 can press the first polarity cover plate into the battery housing and lift it up through the lifting part 403. After the clamping part 404 rotates, the welding part 402 can weld the intersection of the first polarity cover plate and the battery housing. The first polarity cover plate is accurately installed and the welding is relatively firm. The cover plate pressing spot welding device 4 of this embodiment has an online function, which can obtain images during welding for online viewing, which is conducive to improving the production efficiency and automation level of the production line.

[0072] Specifically, with regard to the structure of the clamping portion 404, the clamping portion 404 of this embodiment includes a clamping seat 4041, a clamping jaw assembly 4042 and a press-fitting portion 4043. The clamping seat 4041 can be driven to rotate and connect the lifting portion 403. The clamping jaw assembly 4042 is movably arranged on the clamping seat 4041, and can clamp the two ends of the battery shell in the width direction. The press-fitting portion 4043 can move on the clamping seat 4041 to push the first polarity cover plate to move toward the battery shell, or to detach from the first polarity cover plate. The clamping jaw assembly 4042 has a relatively stable clamping effect on the two ends of the battery shell in the width direction, and the movable press-fitting portion 4043 can stably press the first polarity cover plate into the battery shell.

[0073] Preferably, the clamping seat 4041 of this embodiment is "U" shaped, with pivots at both ends being rotatably connected to the lifting part 403, and driven to rotate by a servo motor. The opening of the clamping seat 4041 accommodates a clamping jaw assembly 4042 and a press-fitting part 4043. The clamping jaw assembly 4042 includes clamping jaws arranged on both sides of the clamping seat 4041 along the width direction of the battery shell, and the clamping jaws are "L" shaped, which can clamp and support the battery shell. Preferably, two clamping jaws are arranged on both sides of the clamping seat 4041, which can clamp the battery shell more firmly. The driven mode of the clamping jaws is cylinder driven. Of course, the driven mode of the clamping jaws can also be an electric push rod, a linear motor, etc. A limit block is arranged at one end corresponding to the second polarity of the battery shell in the clamping seat 4041, and a press-fitting part 4043 is arranged at the other end. The press-fitting part 4043 can move toward or away from the limit block, and the driven mode of the press-fitting part 4043 is cylinder driven.

[0074] Secondly, the structure of the moving fixture 2 is as follows Figure 6As shown, it includes a moving seat 201, a support portion 202 and a pressing portion 203. In this embodiment, the moving seat 201 is arranged on the magnetic levitation conveyor line 1 for movement through the principle of magnetic levitation. The support portion 202 is arranged on the moving seat 201, and is provided with a groove capable of accommodating the battery shell. In this embodiment, two support portions 202 are arranged at intervals, and the battery shell can be embedded in the grooves of the two support portions 202, so that the position of the battery shell on the mover fixture 2 is more accurate. The pressing portion 203 can press the battery shell in the groove of the support portion 202, and includes a pressing plate and a rotating lifting mechanism. The pressing plate is connected to the free end of the rotating lifting mechanism, and the pressing plate can be used to press down or release the battery shell through the rotating lifting mechanism. In the specific implementation, the rotating lifting mechanism can adopt the rotating lifting cylinder or the rotating lifting spring cylinder in the prior art, as long as it is ensured that the pressing plate can be driven by the rotating lifting mechanism to be able to lift and lower while rotating. This embodiment is a unified mover fixture 2 with good interchangeability. While reducing the types of fixtures, it also reduces the grasping of battery transfer between processes, greatly reduces the machine loss of the entire line, and effectively improves the production quality of the battery.

[0075] When the cover plate pressing spot welding device 4 is specifically implemented for welding, the lifting part 403 is lowered, so that the battery shell on the movable fixture 2 enters between the limit block and the pressing part 4043, the movable fixture 2 releases the battery shell, the clamping claw assembly 4042 clamps the battery shell, and the pressing part 4043 moves to contact the first polarity cover plate, and cooperates with the limit block to press the first polarity cover plate into place and maintain the press-fit state, and the lifting part 403 drives the clamping part 404 to rise, so that the intersection of the battery shell and the first polarity cover plate is aligned with the welding part 402, and the welding part 402 performs the welding operation. It should be noted that a clearance hole is provided on the clamping seat 4041, so that when the back of the clamping seat 4041 is aligned with the welding part 402, the welding part 402 can also weld the intersection of the battery shell and the first polarity cover plate through the clearance hole.

[0076] For the overall structure of the magnetic suspension conveyor line 1, refer to Figures 1 to 5As shown, the magnetic suspension conveyor line 1 includes a first conveyor line 101, a second conveyor line 102 and a lifting conveying device 103, and the conveying plane of the second conveyor line 102 is higher than the conveying plane of the first conveyor line 101. Both ends of the second conveyor line 102 are connected to the lifting conveying device 103, and are connected to the two ends of the first conveyor line 101 through the lifting conveying device 103 to form a ring-shaped closed magnetic suspension conveyor line 1. A channel that can enter and exit the inner side of the magnetic suspension conveyor line 1 is formed below the second conveyor line 102. The first conveyor line 101 and the second conveyor line 102 are set at different heights and connected through the lifting conveying device 103, so that the magnetic suspension conveyor line 1 can form a closed ring, so that the mover fixture 2 can operate in a unidirectional cycle. At the same time, the channel formed below the second conveyor line 102 can provide a logistics channel and a human flow channel, opening up the inside and outside of the magnetic suspension conveyor line 1.

[0077] In addition, the magnetic levitation conveyor line 1 of the present embodiment is in the shape of a "mouth", and has four conveying sections arranged in sequence, namely the first conveying section 1a, the second conveying section 1b, the third conveying section 1c and the fourth conveying section 1d, and the connection between two adjacent conveying sections is connected by a turntable 20. The turntable 20 can not only convert the conveying direction of the battery, but also adjust the inner and outer orientations of the two poles of the battery relative to the magnetic levitation conveyor line 1, so as to adapt to the production equipment on the production line. The aforementioned first polarity cover plate pre-pressing device 3 and cover plate pressing spot welding device 4 are both arranged on the second conveying section 1b. The first conveyor line 101 and the second conveyor line 102 are both arranged on the fourth conveying section 1d, that is, the internal entrance and exit of the magnetic levitation conveyor line 1 are arranged on the fourth conveying section 1d.

[0078] On the fourth conveying section 1d, a battery shell loading device 19 is provided on the first conveying line 101 immediately downstream of the second conveying line 102. The battery shell loading device 19 includes a battery shell storage bin 1901 capable of storing battery shells, and a third transport device 1902 capable of loading the battery shells in the battery shell storage bin 1901 to the mover fixture 2. The battery shells enter from the channel below the second conveying line 102 and are stored in the battery shell storage bin 1901. The loading device takes out the battery shells in the battery shell storage bin 1901 and places them on the empty mover fixture 2, thereby loading the battery shells on the mover fixture 2.

[0079] Secondly, a jig dust removal device 21 is also provided upstream of the battery shell feeding device 19 to perform air blowing and dust removal operations on the movable jig 2 to be loaded with the battery shell. Furthermore, a second visual inspection device 22 and a battery shell correction device 23 are provided downstream of the battery shell feeding device 19 in sequence. The battery shell correction device 23 can be communicated with the second visual inspection device 22 and is arranged at a downstream position of the second visual inspection device 22 to adjust the battery shell placed on the movable jig 2 in the opposite direction according to the information fed back by the second visual inspection device 22. Optionally, the battery shell correction device 23 can be corrected by a manipulator 601, an electric lever, or the like.

[0080] On the first conveying section 1a, a pole group feeding conveyor line 15, a first transport device 16, a shell insertion device 17 and a second transport device 18 are provided upstream of the first polarity cover plate pre-pressing device 3. The pole group feeding conveyor line 15 can convey the pole group welded with the first polarity cover plate. The first transport device 16 can move the pole group of the pole group feeding conveyor line 15 to the shell insertion device 17. The second transport device 18 can move the battery housing on the mover fixture 2 to the shell insertion device 17, or move the battery housing on the shell insertion device 17 to the mover fixture 2. The shell insertion device 17 can insert the pole group into the battery housing.

[0081] By setting up a stage group feeding conveyor line, the pole group with the first polarity cover plate welded can be provided to the shell entry device 17 in a timely and reliable manner. When performing the shell entry operation, the first conveyor device removes the pole group on the stage group feeding conveyor line, and the second conveyor device 18 removes the battery shell on the mover fixture 2. The battery shell and the pole group are assembled on the shell entry device 17, and then the second conveyor device sends the assembled battery back to the mover fixture 2, which is transferred to the next workstation by the mover fixture 2.

[0082] Secondly, upstream of the shell-entering device 17, a first dust removal device 26 is also provided on the first conveying section 1a, and the first dust removal device 26 can use compressed gas to blow dust into the battery shell. The shell-entering device 17 is provided with a detection component, which can identify batteries with problems in the pole group shell entry through visual detection, and communicate with the first waste removal device 24 downstream of the shell-entering device 17 and provided on the first conveying section 1a, and the first waste removal device 24 removes and collects the problematic batteries.

[0083] On the second conveying section 1b, a third visual inspection device 25 is provided downstream of the cover plate pressing spot welding device 4, which can inspect the battery after the spot welding of the first polarity cover plate is completed. A second polarity cover plate feeding device 5, a second polarity cover plate batching device 6 and a pole ear welding device 7 are provided downstream of the third visual inspection device 25. The second polarity cover plate feeding device 5 is arranged on the outside of the magnetic levitation conveyor line 1, and can feed the second polarity cover plate to the mover fixture 2. The second polarity cover plate batching device 6 is arranged on the inside of the magnetic levitation conveyor line 1, and can store the second polarity cover plate, and transport the second polarity cover plate to the second polarity cover plate feeding device 5 via the manipulator 601. The pole ear welding device 7 is arranged downstream of the second polarity cover plate feeding device 5, and can weld the second polarity pole ear of the pole group with the second polarity cover plate.

[0084] Specifically, the second polarity cover plate batching device 6 is equipped with a material bin for storing the second polarity cover plates and a code scanning device. The second polarity cover plates are printed with identification codes. When the manipulator 601 grabs the second polarity cover plates in the material bin, it will scan the code and then send it to the second polarity cover plate feeding device 5. For the second polarity cover plates that fail to scan the code, the manipulator 601 will store the second polarity cover plates separately and will not enter the second polarity cover plate feeding device 5.

[0085] Through the above arrangement, the second polarity cover plate batching device 6 is arranged on the inner side of the magnetic levitation conveyor line 1, and the second polarity cover plate can be transported to the inner side of the magnetic levitation conveyor line 1 for storage, which is beneficial to the centralized transportation of materials on the production line, and the storage of the second polarity cover plate does not occupy the outer space of the magnetic levitation conveyor line 1. The second polarity cover plate feeding device 5 is arranged on the outer side of the magnetic levitation conveyor line 1, so that the battery shell can be fed into place without turning.

[0086] Secondly, a weld mark contour detection device 8 and a first visual detection device 9 are provided downstream of the tab welding device 7. The weld mark contour detection device 8 can detect the quality of the welding between the second polarity tab and the second polarity cover plate, and the first visual detection device 9 can perform a more detailed detection of the size and position of the weld mark between the second polarity tab and the second polarity cover plate to ensure the welding quality between the second polarity tab and the second polarity cover plate. The weld mark contour detection device 8 of this embodiment is arranged on the second conveying section 1b, and the first visual detection device 9 is arranged on the third conveying section 1c. A second dust removal device 27 is also provided between the weld mark contour detection device 8 and the second polarity cover plate welding device, and the second dust removal device 27 can perform air blowing and dust removal on the weld mark between the second polarity tab and the second polarity cover plate.

[0087] Furthermore, a second polarity pole ear deviation correction device 13 and a second polarity pole ear position detection device 14 are provided between the second polarity cover plate feeding device 5 and the cover plate pressing spot welding device 4. The second polarity pole ear deviation correction device 13 can correct the second polarity pole ear to a preset position, and the second polarity pole ear position detection device 14 can detect the position of the second polarity pole ear relative to the battery shell. By setting the second polarity pole ear deviation correction device 13, the second polarity pole ear before welding can be corrected, so that the second polarity pole ear can be in a more accurate position relative to the battery shell. The second polarity pole ear position detection device 14 can detect the position of the second polarity pole ear, and screen out and record the batteries that still do not meet the second polarity pole ear position requirements after correction, so that the corresponding batteries can be removed in subsequent processes.

[0088] On the third conveying section 1c, at least two glue sticking devices 10 are provided downstream of the first visual inspection device 9, and the glue sticking devices 10 can perform glue sticking protection on the weld marks of the second polarity pole ear and the second polarity cover plate. The glue sticking devices 10 are divided into common glue sticking devices and standby glue sticking devices. When the common glue sticking device 10 stops working, the standby glue sticking device 10 can replace the stopped glue sticking device 10 to perform glue sticking work. There are two glue sticking devices 10 in this embodiment, one common and one standby. A fourth visual inspection device 28 is provided downstream of the glue sticking device 10, which is used to detect whether the glue sticking position completely covers the weld marks on the second polarity cover plate.

[0089] Secondly, a bending device 11 and a second polarity cover plate pre-pressing device 12 are provided in sequence downstream of the pole ear welding device 7. The bending device 11 can bend the second polarity pole ear so that the second polarity cover plate is aligned with the opening of the battery shell. The second polarity cover plate pre-pressing device 12 can pre-press the second polarity cover plate into the battery shell. After the second polarity pole ear is welded to the second polarity cover plate, the inner side surface of the second polarity cover plate (i.e., the side that ultimately faces the pole group) faces upward. After the bending device 11 bends the second polarity pole ear, the inner side surface of the second polarity cover plate can face the battery shell. When the mover fixture 2 moves to the second polarity cover plate pre-pressing device 12, the second polarity cover plate pre-pressing device 12 pre-presses the second polarity cover plate into the battery shell. After the pre-pressing of the second polarity cover plate is completed, the battery can be scanned (i.e., the identification code on the second polarity cover plate) from the outside of the magnetic levitation conveyor line 1 and unloaded to the next production process.

[0090] On the fourth conveying section 1d, a second waste removal device 29 is further provided upstream of the lifting conveying device 103, which can remove and collect the batteries detected to be non-compliant with the requirements on the moving fixture 2 for centralized processing.

[0091] The battery pole group shell production line of this embodiment can process the pole group, battery shell and second polarity cover plate welded with the first polarity cover plate into a semi-finished battery with the pole group shell completed, the first polarity cover plate pre-welded to the battery shell, the second polarity cover plate welded to the pole group and pre-pressed into the battery shell. By setting a unified moving fixture 2, a first polarity cover plate pre-pressing device 3 and a cover plate pressing spot welding device 4 and other equipment, the efficiency of polarity cover plate pressing welding can be improved, the waiting time of the moving fixture 2 can be reduced, and the workstation can be reduced to reduce the floor space of the production line. At the same time, the modular design of the production line of this embodiment is combined with the integrated fixture and magnetic levitation transportation technology to participate in the processing of each functional module, which realizes a significant improvement in the OEE (Overall Equipment Effectiveness, which represents the ratio of the actual production capacity of the equipment to the theoretical production capacity) of single-machine equipment and whole-line equipment, reduces the ramp-up period of the later equipment entry, and can ensure stable and efficient production.

[0092] Embodiment 2

[0093] This embodiment relates to a battery production system, which is provided with the battery pole assembly shell production line of embodiment 1. By providing the battery pole assembly shell production line of embodiment 1, the overall equipment of the battery production system of this embodiment occupies a smaller area, thereby improving the space utilization rate of the production site.

[0094] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pole group casing-in production line, characterized in that: It includes a magnetic levitation conveyor line, a mover jig movably arranged on the magnetic levitation conveyor line, and a first polarity cover plate pre-pressing device and a cover plate press-fitting and spot-welding device arranged in sequence along the conveying direction of the mover jig; When the mover jig moves to the first polarity cover plate pre-pressing device, it is loaded with a battery case, the battery case contains a pole group, and the first polarity pole ear of the pole group is welded to the first polarity cover plate; the first polarity cover plate pre-pressing device can pre-press the first polarity cover plate on the mover jig into the battery case, and the battery case after pre-pressing is conveyed by the mover jig to the cover plate press-fitting and spot-welding device, and the cover plate press-fitting and spot-welding device performs pre-spot welding after pressing the first polarity cover plate in place.

2. The battery pole group casing-in production line according to claim 1, characterized in that: The cover plate press-fitting and spot-welding device includes a mounting base, a welding part, a lifting part and a clamping part; The welding part is arranged on the mounting base, the lifting part is connected to the mounting base in a liftable manner, and the clamping part is rotatably connected to the lifting part in a drivable manner; The clamping part can clamp and move the battery case upward away from the mover jig, and press the first polarity cover plate in place, and the battery case is flipped due to the rotation of the clamping part, so that the side where the battery case and the first polarity cover plate are joined can be in the weldable area of the welding part.

3. The battery pole group casing-in production line according to claim 2, characterized in that: The clamping part includes a clamping seat, a jaw assembly and a press-fitting part; The clamping seat is rotatably connected to the lifting part in a drivable manner; the jaw assembly is movably arranged on the clamping seat and can clamp both ends in the width direction of the battery case; the press-fitting part can move on the clamping seat to push the first polarity cover plate to move towards the battery case or away from the first polarity cover plate.

4. The battery pole group casing-in production line according to claim 1, characterized in that: The magnetic levitation conveyor line includes a first conveyor line, a second conveyor line and a lifting conveyor device, and the conveying plane of the second conveyor line is higher than the conveying plane of the first conveyor line; both ends of the second conveyor line are connected with the lifting conveyor device and are connected to both ends of the first conveyor line through the lifting conveyor device to form a closed-loop magnetic levitation conveyor line; a passage is formed under the second conveyor line to allow entry and exit from the inside of the magnetic levitation conveyor line; and / or, The magnetic levitation conveyor line is in a "mouth" shape and has four conveying sections connected in sequence, and the connection between the two conveying sections is connected by a turntable.

5. The battery pole group casing-in production line according to claim 4, characterized in that: A second polarity cover plate feeding device, a second polarity cover plate batching device and a pole ear welding device are arranged downstream of the cover plate press-fitting and spot-welding device; The second polarity cover plate feeding device is arranged on the outside of the magnetic levitation conveyor line, and can feed the second polarity cover plate to the mover fixture; the second polarity cover plate batching device is arranged on the inside of the magnetic levitation conveyor line, and can store the second polarity cover plate, and transport the second polarity cover plate to the second polarity cover plate feeding device via a robot; the pole ear welding device is arranged downstream of the second polarity cover plate feeding device, and can weld the second polarity pole ear of the pole group to the second polarity cover plate.

6. The battery pole assembly shelling production line according to claim 5, characterized in that: A weld mark profile detection device and a first visual detection device are provided downstream of the tab welding device; The weld mark contour detection device can detect the quality of welding between the second polarity tab and the second polarity cover plate, and the first visual detection device can detect the size and position of the weld mark between the second polarity tab and the second polarity cover plate; and / or, At least two glue sticking devices are provided downstream of the tab welding device, and the glue sticking devices can apply glue to protect the weld marks of the second polarity tab and the second polarity cover plate; The glue sticking device is divided into a common glue sticking device and a standby glue sticking device. When the common glue sticking device stops working, the standby glue sticking device can replace the stopped glue sticking device to perform glue sticking work.

7. The battery pole assembly shelling production line according to claim 5, characterized in that: A bending device and a second polarity cover plate pre-pressing device are provided in sequence downstream of the tab welding device; The bending device can bend the second polarity tab so that the second polarity cover plate is aligned with the opening of the battery housing; the second polarity cover plate pre-pressing device can pre-press the second polarity cover plate into the battery housing; and / or, A second polarity tab deviation correction device and a second polarity tab position detection device are provided upstream of the second polarity cover plate feeding device. The second polarity tab deviation correction device can correct the second polarity tab to a preset position, and the second polarity tab position detection device can detect the position of the second polarity tab relative to the battery housing.

8. The battery pole assembly shelling production line according to claim 1, characterized in that: A pole group loading conveyor line, a first transport device, a shell feeding device and a second transport device are provided upstream of the first polarity cover plate pre-pressing device; The pole group loading conveyor line is capable of conveying the pole group welded with the first polarity cover plate; the first transport device is capable of moving the pole group of the pole group loading conveyor line to the shell entry device; the second transport device is capable of moving the battery shell on the movable fixture to the shell entry device, or moving the battery shell on the shell entry device to the movable fixture; the shell entry device is capable of inserting the pole group into the battery shell.

9. The battery pole assembly shelling production line according to claim 8, characterized in that: A battery shell feeding device is provided upstream of the shell feeding device; The battery shell loading device includes a battery shell storage bin capable of storing the battery shells, and a third transport device capable of loading the battery shells in the battery shell storage bin onto the mover fixture.

10. A battery production system, characterized in that: The battery production system is provided with a battery electrode assembly shelling production line as claimed in any one of claims 1 to 9.

Images