Alternate pre-bent collector plate welding device

Abstract

The present invention discloses an alternating pre-bending current collecting plate welding device, which relates to the technical field of battery production equipment. The device is sequentially formed with a first bending station, a welding station and a second bending station; the device includes two assembly components, two bending components, a transport component and a welding component; the two assembly components include a first assembly component and a second assembly component, which are used to suck the current collecting plate to be bent, or press the bent current collecting plate to the end of the battery cell to be welded; the two bending components include a first bending component and a second bending component, which are respectively arranged at the first bending station and the second bending station, and are both used to bend the current collecting plate to be bent; the transport component is used to transport the battery cell to be welded to the welding station; the welding component is arranged corresponding to the welding station, and is used to weld the bent current collecting plate to the end of the battery cell to be welded; thereby, the utilization rate of each component of the device is improved, and the production efficiency of the battery product is improved.

Description

[0001] Battery production equipment technical field

[0002] The present invention relates to the technical field of battery production equipment, and in particular to an alternately pre-bent current collecting plate welding device. Background Art

[0003] Currently, in the battery production process, there are two main processes for the current collecting plate, namely, the bending process of bending the current collecting plate and the welding process of welding the current collecting plate to the end of the battery cell. The two processes correspond to two processing components. The current problem is that when one of the processing components is processing, the other processing component can only stop running, which leads to a long idle period of the equipment and low utilization rate per unit time. The resulting problem of low production efficiency of battery products needs to be solved urgently. Summary of the Invention

[0004] The main purpose of the present invention is to provide an alternating pre-bent current collecting plate welding device, aiming to provide an alternating pre-bent current collecting plate welding device that improves the production efficiency of battery products.

[0005] To achieve the above-mentioned object, the present invention proposes the alternately pre-bent current collecting plate welding device, on which a first bending station, a welding station, and a second bending station are sequentially formed; the alternately pre-bent current collecting plate welding device comprises:

[0006] Two assembly components, including a first assembly component and a second assembly component, are used to suck the current collecting plate to be bent, or press the bent current collecting plate to the end of the battery cell to be welded;

[0007] Two bending assemblies, including a first bending assembly and a second bending assembly, are respectively arranged at the first bending station and the second bending station, and are both used to bend the collecting plate to be bent;

[0008] A transport assembly for transporting the battery cells to be welded to the welding station; and

[0009] A welding assembly, arranged corresponding to the welding station, for welding the bent current collecting plate to the end of the battery cell to be welded;

[0010] wherein the first assembly component and the second assembly component move back and forth synchronously;

[0011] When the first assembly component moves to the first bending station, the second assembly component moves to the welding station; the first bending assembly bends the current collecting disc to be bent on the first assembly component, and the welding assembly welds the bent current collecting disc on the second assembly component to the end of the battery cell to be welded;

[0012] When the first assembly component moves to the welding station, the second assembly component moves to the second bending station; the welding component welds the bent collecting plate on the first assembly component to the end of the battery cell to be welded, and the second bending component bends the collecting plate to be bent on the second assembly component.

[0013] In one embodiment, the alternating pre-bent current collecting plate welding device further includes a motion component, and the motion component includes:

[0014] A movable seat is movably installed along the arrangement direction of the two bending components; the two assembly components are both arranged on the movable seat; and

[0015] The first driving part is drivingly connected to the movable seat to drive the movable seat to move back and forth.

[0016] In one embodiment, the two assembly components each include a movable assembly plate and a plurality of welding pressure heads arranged on the assembly plate; the assembly plate has a loading station and a welding pressure station;

[0017] When the assembly plate is located at the loading station, the multiple welding pressure heads are used to place and tightly absorb the current collecting plate to be bent; when the assembly plate flows from the loading station to the welding station, the multiple welding pressure heads are used to press the bent current collecting plate onto the end of the battery cell to be welded at the welding station;

[0018] Among the two assembly components, when the assembly plate of one assembly component is at the loading station, the assembly plate of the other assembly component is at the welding station.

[0019] In one embodiment, both of the assembly components further include:

[0020] First Plinth;

[0021] A rotating shaft is rotatably mounted on the first base; the assembly plate is fixed to the outer peripheral wall of the rotating shaft and is elongated along the axis of the rotating shaft; the rotating shaft drives the assembly plate to flip back and forth, so that the assembly plate circulates from the loading station to the welding station; and

[0022] The second driving part is arranged on the first base and is drivingly connected to the rotating shaft.

[0023] In one embodiment, the two bending assemblies further include:

[0024] Second base;

[0025] a third driving unit, disposed on the second base;

[0026] A mounting seat, drivingly connected to the driving end of the third driving part;

[0027] Wherein, when the assembly plate is located at the loading station and moves to the corresponding station of the bending component, the third driving part is used to drive the mounting seat to move to just above the assembly plate.

[0028] In one embodiment, the two bending assemblies further include:

[0029] The bending mechanism includes a fourth driving portion and a bending portion; the fourth driving portion is disposed on the mounting seat and drives the bending portion; and

[0030] The pressing mechanism includes a fifth driving portion and a pressing portion; the fifth driving portion is disposed on the mounting seat and is driven and connected to the pressing portion;

[0031] Among them, when the mounting seat moves to the top of the assembly plate, the fourth driving part is used to drive the bending part to bend the collecting plate to be bent which is adsorbed on the welding pressure head; the fifth driving part is used to drive the clamping part to clamp the collecting plate to be bent on the welding pressure head.

[0032] In one embodiment, the alternately pre-bent current collecting plate welding device further includes two positioning assemblies, which are respectively provided at the first bending station and the second bending station and are spaced apart to position the current collecting plate to be bent; the two positioning assemblies each include:

[0033] third pedestal;

[0034] a sixth driving unit, disposed on the third base;

[0035] a mounting plate drivingly connected to the driving end of the sixth driving portion;

[0036] Wherein, when the assembly plate is located at the loading station and moves to the corresponding station of the bending component, the sixth driving part is used to drive the installation plate to move toward the assembly plate.

[0037] In one embodiment, the two positioning assemblies further include a positioning mechanism and a correction mechanism, both of which are disposed on the mounting plate;

[0038] Among them, when the sixth driving part drives the mounting plate close to the assembly plate, the positioning mechanism is used to position the collecting plate to be bent placed on the welding pressure head; the correcting mechanism is used to correct the collecting plate to be bent placed on the welding pressure head.

[0039] In one embodiment, the positioning mechanism includes a seventh driving portion and a first clamping portion; the seventh driving portion is disposed on the mounting plate; the first clamping portion is drivingly connected to a driving end of the seventh driving portion;

[0040] The correction mechanism includes an eighth driving part and a second clamping part; the eighth driving part is arranged on the mounting plate; the second clamping part is drivingly connected to the driving end of the eighth driving part;

[0041] Among them, the seventh driving part is used to drive the first clamping part to clamp and position the current collecting plate to be bent placed on the welding pressure head; the eighth driving part is used to drive the second clamping part to clamp and correct the pole ear of the current collecting plate to be bent placed on the welding pressure head.

[0042] In one embodiment, the alternately pre-bent current collecting plate welding device further includes a pushing assembly disposed at the welding station and opposite to the welding assembly; the pushing assembly includes a pushing portion and a ninth driving portion, the pushing portion being drivingly connected to a driving end of the ninth driving portion;

[0043] Among them, when one of the two assembly components is in the welding station and the corresponding assembly plate is switched from the loading station to the welding station, the ninth driving part drives the pushing part to approach the battery cell to be welded, so that the pushing part cooperates with the welding pressure head to press the bent collecting plate to the end of the battery cell to be welded.

[0044] The technical solution of the present invention is to sequentially form a first bending station, a welding station and a second bending station on the device, and be equipped with two assembly components at the same time; the assembly components are loaded with collecting plates that require different processing procedures, thereby, one of the two assembly components is located at the welding station, and when the welding component performs the welding process on the collecting plate, the other must be at the first bending station or the second bending station, and one of the two bending components at the corresponding position performs the bending process on the other collecting plate, thereby the device can process two processes of the two collecting plates at the same time, thereby improving the utilization rate of each component in the device, and further improving the production efficiency of the battery products. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0046] Figure 1A schematic plan view of an embodiment of the alternately pre-bent current collecting plate welding device provided by the present invention;

[0047] Figure 2 for Figure 1 A schematic diagram of a three-dimensional structure without transport components;

[0048] Figure 3 for Figure 2 Assembly diagram of the assembly components and motion components;

[0049] Figure 4 for Figure 2 Schematic diagram of the three-dimensional structure of the assembly plate of the assembly component in the loading station;

[0050] Figure 5 for Figure 2 A schematic diagram of the three-dimensional structure of the assembly plate of the assembly component in the welding and pressing station;

[0051] Figure 6 for Figure 2 Schematic diagram of the three-dimensional structure of the mid-bending component;

[0052] Figure 7 for Figure 6 Schematic diagram of the three-dimensional structure of the middle bending component in the main viewing direction;

[0053] Figure 8 for Figure 2 Schematic diagram of the three-dimensional structure of the positioning component;

[0054] Figure 9 for Figure 2 Schematic diagram of the three-dimensional structure of the propulsion component;

[0055] Figure 10 for Figure 3 Schematic diagram of the locally enlarged three-dimensional structure at A.

[0056] Description of Figure Numbers:

[0057] 100. Alternating pre-bending collector plate welding device; 100a. First bending station; 100b. Welding station; 100c. Second bending station; 1. Assembly component; 1a. First assembly component; 1b. Second assembly component; 11. Assembly plate; 111. Welding pressure head; 11a. Loading station; 11b. Welding pressure station; 12. First base; 13. Rotating axis; 14. Second drive unit; 15. Guide rail; 16. Blocking cylinder; 17. Blocking slide; 18. Blocking roller; 2. Bending component; 2a. First bending component; 2b. Second bending component; 21. Second base; 22. Third drive unit; 23. Mounting seat; 24. Bending mechanism; 241. Fourth drive unit; 242. Bending unit; 25. Pressing Mechanism; 251, fifth driving part; 252, pressing part; 3, transport assembly; 4, welding assembly; 5, movable assembly; 51, movable seat; 52, first driving part; 6, positioning assembly; 61, third base; 62, sixth driving part; 63, mounting plate; 64, positioning mechanism; 641, seventh driving part; 642, first clamping part; 65, deviation correction mechanism; 651, eighth driving part; 652, second clamping part; 7, pushing assembly; 71, pushing part; 72, ninth driving part; 73, column; 74, sliding plate; 75, slider; 76, slide rail; 8, pressure sensing device; 81, mounting base plate; 82, fixed shaft; 83, pressure sensor; 84, spring; 85, pressing plate; 86, limit block; 9, stand;

[0058] 101. Current collecting plate; 1011. Tab; 102. Battery cell.

[0059] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0061] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0062] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0063] Currently, in the battery production process, there are two main processes for the current collecting plate, namely, the bending process of bending the current collecting plate and the welding process of welding the current collecting plate to the end of the battery cell. The two processes correspond to two processing components. The current problem is that when one of the processing components is processing, the other processing component can only stop running, which leads to a long idle period of the equipment and low utilization rate per unit time. The resulting problem of low production efficiency of battery products needs to be solved urgently.

[0064] In order to solve the above problems, the present invention proposes an alternating pre-bent current collecting plate welding device, which aims to provide an alternating pre-bent current collecting plate welding device that improves the production efficiency of battery products. Figures 1 to 9 A schematic structural diagram of an embodiment of the alternately pre-bent current collecting plate welding device provided by the present invention.

[0065] Please refer to Figures 1 to 3 In one embodiment of the present invention, a first bending station 100a, a welding station 100b, and a second bending station 100c are sequentially formed on the alternate pre-bending collector plate welding device 100; the alternate pre-bending collector plate welding device 100 includes two assembly components 1, two bending components 2, a transport component 3, and a welding component 4; the two assembly components 1 include a first assembly component 1a and a second assembly component 1b, which are used to suck the collector plate 101 to be bent, or to move the bent collector plate 101 Pressed tightly against the end of the battery cell 102 to be welded; the two bending assemblies 2 include a first bending assembly 2a and a second bending assembly 2b, which are respectively arranged at the first bending station 100a and the second bending station 100c, and are both used to bend the current collecting plate 101 to be bent; the transport assembly 3 is used to transport the battery cell 102 to be welded to the welding station 100b; the welding assembly 4 is arranged corresponding to the welding station 100b, and is used to weld the bent current collecting plate 101 to the end of the battery cell 102 to be welded;

[0066] Among them, the first assembly component 1a and the second assembly component 1b move back and forth synchronously;

[0067] When the first assembly component 1a moves to the first bending station 100a, the second assembly component 1b moves to the welding station 100b; the first bending assembly 2a bends the current collecting plate 101 to be bent on the first assembly component 1a, and the welding assembly 4 welds the bent current collecting plate 101 on the second assembly component 1b to the end of the battery cell 102 to be welded;

[0068] When the first assembly component 1a moves to the welding station 100b, the second assembly component 1b moves to the second bending station 100c; the welding component 4 welds the bent collecting plate 101 on the first assembly component 1a to the end of the battery cell 102 to be welded, and the second bending component 2b bends the collecting plate 101 to be bent on the second assembly component 1b.

[0069] The technical solution of the present invention is to sequentially form a first bending station 100a, a welding station 100b and a second bending station 100c on the device, and be equipped with two assembly components 1 at the same time; the assembly component 1 is loaded with a collecting plate 101 requiring different processing procedures, thereby, when one of the two assembly components 1 is located at the welding station 100b, and the welding component 4 performs the welding process on the collecting plate 101, the other must be at the first bending station 100a or the second bending station 100c, and one of the two bending components 2 at the corresponding position performs the bending process on the other collecting plate 101, thereby, the device can simultaneously process two processes of the two collecting plates 101, thereby improving the utilization rate of each component in the device, and further improving the production efficiency of the battery products.

[0070] In this embodiment, please refer to Figure 1 The transport component 3 utilizes a magnetic levitation conveying mechanism. Specifically, the transport component 3 includes a magnetic levitation conveying stator and multiple magnetic levitation conveying movers that move along the extension direction of the magnetic levitation conveying stator. The magnetic levitation conveying movers are provided with a cell 102 carrier for clamping and releasing the battery cell 102. When transporting the battery cell 102, the battery cell 102 is placed flat in the cell 102 carrier. The use of a magnetic levitation conveying mechanism as the transport component 3 has no mechanical friction, low power consumption, low noise, and high efficiency. It does not require lubrication or sealing, solving the lubrication and energy consumption issues in high-speed mechanical design. It also provides stable and highly accurate transportation. The stopping position of each magnetic levitation conveying mover can be precisely controlled, ensuring the transportation accuracy of the battery cell 102 and further improving the welding quality between the battery cell 102 and the collecting plate 101.

[0071] In this embodiment, the transport component 3 may also adopt any transport mechanism that can realize horizontal transport of the battery cell 102. Any transport mechanism that can realize the same function as this solution is within the protection scope of the present invention, and this embodiment does not make specific limitations on this.

[0072] It should be noted that in the present application, the battery cell 102 is placed flat in the battery cell 102 carrier, and the battery cell 102 and the current collecting plate 101 adopt a horizontal welding process. Compared with the traditional vertical welding process of the battery cell 102 and the current collecting plate 101, the horizontal welding alternating pre-bent current collecting plate welding device 100 proposed in this scheme can be better compatible with the technology of "first bending the pole ear 1011 of the current collecting plate 101, and then welding the bent current collecting plate 101 to the battery cell 102", completing the technical reform in the welding process of the battery cell 102 and the current collecting plate 101, so as to achieve high space utilization, high welding efficiency and high welding quality in the welding process of the battery cell 102 and the current collecting plate 101.

[0073] It is understandable that the two assembly components 1 can be arranged in a separate manner or in an integrated manner.

[0074] As mentioned above, the first assembly component 1a and the second assembly component 1b move back and forth synchronously. If the assembly components are arranged in a split manner, different drive devices can be used to drive the movement of the first assembly component 1a and the second assembly component 1b respectively. As a result, the spacing between the two assembly components 1 is not fixed. This is because the processing time of the two processes may be different. By setting the separation in a split manner, the movement speed of the two assembly components 1 can be adjusted separately, and then the two assembly components 1 can be driven separately according to the processing time of each process. However, such a setting also has disadvantages. On the one hand, it takes time to compile the program, and on the other hand, it also takes a lot of time to debug the program, which is labor-intensive. In addition, during the production process, the long program operation also brings a lot of load to the control system.

[0075] Therefore, please refer to Figure 3 In this embodiment, the two assembly components 1 are set up in an integrated manner, that is, the distance between the two assembly components 1 is fixed, the movement speed is fixed, and the bending process and the welding process, whichever process requires the longest time, are taken as the movement basis of the two assembly components 1, thereby achieving the movement effect of the first assembly component 1a and the second assembly component 1b moving and stopping at the same time, so that the processing process will not be stopped due to errors in the movement of the two assembly components 1.

[0076] For further information, please refer to Figure 2 and Figure 3The alternating pre-bending collecting plate welding device 100 also includes a moving component 5, which includes a movable seat 51 and a first driving unit 52; the movable seat 51 is movably installed along the layout direction of the two bending components 2; the two assembly components 1 are both arranged on the movable seat 51; the first driving unit 52 drives the connection movable seat 51 to drive the movable seat 51 to move back and forth.

[0077] It is understandable that in order to achieve synchronous movement of the first assembly component 1a and the second assembly component 1b, the two assembly components 1 are set as an integral unit. Specifically, in this embodiment, by installing both assembly components 1 on the movable seat 51, the first assembly component 1a and the second assembly component 1b are set as an integral unit, thereby maintaining a consistent spacing. In this way, the distance between the first bending station 100a, the welding station 100b and the second bending station 100c can also be determined; at the same time, the driving end of the first driving part 52 drives the connected movable seat 51, driving the movable seat 51 to move back and forth between the first bending station 100a and the second bending station 100c, so that the two assembly components 1 can complete the processing steps of the respective loaded collecting plates 101 at the first bending station 100a, the welding station 100b and the second bending station 100c.

[0078] It can be understood that the first drive part 52 can be an electric slide, or a ball screw, or it can be configured as a linear reciprocating motion device such as an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder; the specific setting form of the first drive part 52 is not specifically limited here, and solutions that can achieve the same effect of the present invention are within the scope of protection of the present invention.

[0079] In addition, please refer to Figure 2 and Figure 3 Both assembly components 1 include a movably arranged assembly plate 11 and a plurality of welding pressure heads 111 arranged on the assembly plate 11; the assembly plate 11 has a loading station 11a and a welding and pressing station 11b; wherein, when the assembly plate 11 is located at the loading station 11a, the plurality of welding pressure heads 111 are used to place and suck the collecting plate 101 to be bent; when the assembly plate 11 flows from the loading station 11a to the welding and pressing station 11b, the plurality of welding pressure heads 111 are used to press the bent collecting plate 101 to the end of the battery cell 102 to be welded at the welding and pressing station 11b; in the two assembly components 1, when the assembly plate 11 of one assembly component 1 is at the loading station 11a, the assembly plate 11 of the other assembly component 1 is at the welding and pressing station 11b.

[0080] Understandably, please refer to Figure 2The alternate pre-bending collector plate welding device 100 has two different processing stations, and correspondingly, the assembly component 1 has different working stations at different processing stations; that is, the first bending station 100a and the second bending station 100c of the alternate pre-bending collector plate welding device 100 are both used to bend the tabs 1011 of the collector plate 101. Therefore, when one of the two assembly components 1 is located at the first bending station 100a or the second bending station 100c, the assembly plate 11 needs to be at the loading station 11a, and then The multiple welding pressure heads 111 on the assembly plate 11 can place and suck up the collecting plate 101 to be bent, waiting for the bending component 2 to bend the collecting plate 101; similarly, the welding station 100b is where the welding component 4 performs the welding process on the battery cell 102 and the collecting plate 101. When one of the two assembly components 1 is located at the welding station 100b, the assembly plate 11 needs to be in the welding and pressing station 11b, and then press the bent collecting plate 101 to the end of the battery cell 102 to be welded at the welding station 100b, waiting for the welding component 4 to perform the welding process.

[0081] Understandably, please refer to Figure 3 The two assembly components 1 are arranged in parallel and can be in two different processing stations at the same time, so that the alternating pre-bent collecting plate welding device 100 can perform different processes on the two assembly components 1 at the same time, thereby improving the processing efficiency. Specifically, among the two assembly components 1, when the assembly plate 11 of one assembly component 1 is at the loading station 11a, the assembly plate 11 of the other assembly component 1 is at the welding and pressing station 11b. As a result, the assembly component 1 with the assembly plate 11 at the loading station 11a is subjected to the bending process at the first bending station 100a or the second bending station 100c. At the same time, the assembly component 1 with the assembly plate 11 at the welding and pressing station 11b is at the welding station 100b, and the welding process is performed on the end of the battery cell 102 and the collecting plate 101.

[0082] In particular, it can be seen from the above description that the welding assembly 4 is a welding process for the current collecting plate 101 that has been bent. It can be seen that in this embodiment, the process of bending first and then welding is adopted, which avoids the traditional processing process, that is, the pulling between the end of the battery cell 102 and the current collecting plate 101 during the welding and bending process, thereby protecting the flow area of ​​the flow surface between the end of the battery cell 102 and the current collecting plate 101, thereby ensuring that the produced battery can reach the preset rated power when the circuit is connected, thereby improving the yield rate of battery production.

[0083] It is understandable that the flow paths of the loading station 11a and the welding station 11b on the assembly plate 11 include straight lines or curves, but these two sets of flow paths will cause two problems for the alternating pre-bent collecting plate welding device 100. First, the space occupancy rate of the device is increased, which is not conducive to integrated production. Both linear motion and curved motion involve changes in spatial position. Therefore, the device has to include these spatial positions, which makes the device bloated and complicated; the other is the greater the space occupancy rate, the more likely it is that defects or errors will occur in the coordination during the movement coordination of the components, which can easily lead to an excessively high defective rate in battery production and high economic costs.

[0084] Accordingly, in this embodiment, a loading station 11a and a welding and pressing station 11b are set on a rotating path on the assembly plate 11. On the one hand, except for the movement of the movable seat 51 along its length direction, there is no change in spatial position, so the setting of the alternating pre-bent collecting plate welding device 100 can be integrated and miniaturized; on the other hand, the components of the integrated and miniaturized device have high matching accuracy, which can easily improve the product yield and have lower economic costs.

[0085] For further information, please refer to Figure 4 and Figure 5 Both assembly components 1 further include a first base 12, a rotating shaft 13 and a second driving portion 14; the rotating shaft 13 is rotatably mounted on the first base 12; the assembly plate 11 is fixedly mounted on the outer peripheral wall of the rotating shaft 13 and is elongated along the axial extension direction of the rotating shaft 13; the rotating shaft 13 drives the assembly plate 11 to flip back and forth, so that the assembly plate 11 circulates from the loading station 11a to the welding and pressing station 11b; the second driving portion 14 is arranged on the first base 12, driving the connection to the rotating shaft 13.

[0086] It can be understood that in order to realize that the assembly plate 11 can flow between the loading station 11a and the welding station 11b through the rotation path of the assembly plate 11, the second driving part 14 is installed on the first base 12, and the driving end of the second driving part 14 drives one end of the rotating shaft 13 along the length direction, so that the rotating shaft 13 can rotate along the axis extending in its length direction, and then the assembly plate 11 is installed on the peripheral side of the rotating shaft 13, and one side end of the assembly plate 11 along the length direction is fixed on the rotating shaft 13, and then the second driving part 14 drives the rotating shaft 13 to rotate along the axis extending in its length direction, and then drives the assembly plate 11 to rotate around the axis extending in the length direction of the rotating shaft 13, thereby realizing the flow switching of the assembly plate 11 between the loading station 11a and the welding station 11b on the rotation path.

[0087] In this embodiment, the second drive unit 14 is specifically configured as a servo motor, the drive end of which is coaxially fixedly connected to the rotating shaft 13 via a bearing mounted on the first base 12. By driving the rotating shaft 13 with the servo motor, the rotation angle of the rotating shaft 13 can be precisely controlled, and thus the tilting angle of the assembly plate 11 can be precisely controlled. This reduces the possibility that the welding station 11b cannot align with the current collecting tray 101 or the end of the battery cell 102 due to the tilting angle of the assembly plate 11 exceeding or falling below the set angle, thereby further improving the welding quality between the current collecting tray 101 and the battery cell 102.

[0088] It is understandable that the second driving part 14 can also be a rotating motor or a manually driven hand crank, etc. Under the premise that the solution of this embodiment can be implemented, the specific configuration of the second driving part 14 is not specifically limited here.

[0089] For example, the second driving unit 14 can drive the rotating shaft 13, the assembly plate 11 and the plurality of welding pressure heads 111 to simultaneously perform a reciprocating flip at an angle of 90 degrees, that is, Figure 4 As shown, when the assembly plate 11 is arranged parallel to the horizontal plane, it is the loading station 11a. Figure 5 As shown, when the assembly plate 11 is vertically arranged along the horizontal plane, it is the welding and pressing station 11b; it should be noted that the flip angle of the assembly plate 11 is set to °, which can reduce the driving stroke of the second driving part 14 to make it easier to control the flipping accuracy of the assembly plate 11.

[0090] In addition, please refer to Figure 6 Both bending components 2 further include a second base 21, a third driving portion 22 and a mounting seat 23; the third driving portion 22 is arranged on the second base 21; the mounting seat 23 is drivingly connected to the driving end of the third driving portion 22; wherein, when the assembly plate 11 is located at the loading station 11a and moves to the corresponding station of the bending component 2, the third driving portion 22 is used to drive the mounting seat 23 to move to directly above the assembly plate 11.

[0091] It is understood that, in this embodiment, the loading station 11a and the welding station 11b of the assembly plate 11 are switched between by the rotation of the rotary shaft 13. Furthermore, the relative spatial positions of the assembly plates 11 of the two assembly components 1 move along the arrangement direction of the two bending components 2, and the welding components 4 and bending components 2 are positioned corresponding to the different movable positions of the assembly plates 11. As previously noted, in this embodiment, the current collecting plate 101 is first bent and then welded. Accordingly, when the assembly plate 11 of one of the two assembly components 1 is in the loading station 11a, it is positioned corresponding to one of the two bending components 2; simultaneously, when the assembly plate 11 of the other assembly component 1 is in the welding station 11b, it is positioned corresponding to the welding component 4 of the welding station 100b. Since the relative spatial positions of the assembly plates 11 of the two assembly assemblies 1 only move along the extension direction of the movable seat 51, when any assembly 1 reaches the corresponding position of the bending assembly 2 or the welding assembly 4, the bending assembly 2 and the welding assembly 4 need to move toward the assembly plate 11 of the corresponding assembly 1 to bend or weld the collecting plate 101 on the assembly plate 11. This embodiment does not impose any further restrictions on the arrangement of the bending assembly 2 and the welding assembly 4, and any solution that can achieve the same effect as the present invention is within the scope of protection of the present invention.

[0092] From this, it can be understood that when the assembly plate 11 is located at the loading station 11a, that is, the corresponding assembly component 1 is now located at the bending component 2, the bending component 2 needs to move toward the position of the assembly plate 11, in order to perform a bending process on the collecting plate 101 placed on the assembly plate 11 and located at the welding pressure head 111; therefore, the third driving part 22 is arranged on the second base 21, the second base 21 is fixed on a fixed stand 9, and the mounting seat is driven and connected to the driving end of the third driving part 22, and the bending mechanism 24 is arranged on the mounting seat; and then when the assembly plate 11 is located at the loading station 11a, that is, the assembly component 1 is in the corresponding bending component 2, the third driving part 22 of the bending component 2 drives the mounting seat to move to directly above the assembly plate 11, thereby facilitating the bending component 2 to perform a bending process on the pole ear 1011 of the collecting plate 101 to be bent placed on the assembly plate 11 and located at the welding pressure head 111.

[0093] In particular, the third driving part 22 includes a linear driving device such as an electric cylinder, a pneumatic cylinder or a hydraulic cylinder. The arrangement of the third driving part 22 is not specifically limited here.

[0094] For further information, please refer to Figure 6 and Figure 7, both bending assemblies 2 also include a bending mechanism 24 and a clamping mechanism 25; the bending mechanism 24 includes a fourth driving part 241 and a bending part 242; the fourth driving part 241 is arranged on the mounting seat 23, driving the connected bending part 242; the clamping mechanism 25 includes a fifth driving part 251 and a clamping part 252; the fifth driving part 251 is arranged on the mounting seat 23; driving the connected clamping part 252; wherein, when the mounting seat 23 moves to just above the assembly plate 11, the fourth driving part 241 is used to drive the bending part 242 to bend the collecting plate 101 to be bent adsorbed on the welding pressure head 111; the fifth driving part 251 is used to drive the clamping part 252 to press the collecting plate 101 to be bent on the welding pressure head 111.

[0095] It can be understood that when the bending component 2 moves to the top of the assembly plate 11 through the third drive part 22, the bending mechanism 24 starts to bend the ear 1011 of the collecting plate 101 placed on the assembly plate 11 and located at the welding pressure head 111; specifically, the fourth drive part 241 is arranged on the mounting seat to drive the connecting bending part 242. When the bending mechanism 24 moves to the top of the assembly plate 11, the fourth drive part 241 is used to drive the bending part 242 to be close to the welding pressure head 111 to bend the collecting plate 101 to be bent.

[0096] It can be understood that in this embodiment, since the loading station 11a is arranged with the assembly plate 11 parallel to the horizontal plane, the fourth driving part 241 drives the bending part 242 to move in the up and down directions. When the bending part 242 passes the horizontal position of the assembly plate 11 in the up and down directions, the bending mechanism 24 realizes the process of bending the pole ear 1011 of the collecting plate 101.

[0097] In particular, the fourth driving portion 241 includes a linear driving device such as an electric cylinder, a pneumatic cylinder or a hydraulic cylinder. The setting form of the fourth driving portion 241 is not specifically limited here; the bending portion 242 can be a driving block, a movable plate or the like, but since it is set in this way, there is sliding friction with the pole ear 1011 of the collecting plate 101 during the bending process, the wear on the surface of the collecting plate 101 relative to the pole ear 1011 is relatively large. Therefore, the bending portion 242 can also be set in the form of a roller. For example, in this embodiment, as Figure 6 As shown, the driving end of the fourth driving portion 241 is fixedly connected to a roller seat, a rotating shaft is disposed within the roller seat, and a roller is coaxially mounted on the rotating shaft. In other words, when the bending portion 242 performs the bending process, rolling friction is applied to the tabs 1011 of the current collecting plate 101. Because the rolling friction is less than the sliding friction, the wear of the tabs 1011 of the current collecting plate 101 by the bending portion 242 during the bending process is further reduced, and the bending process is made smoother, making it easier to achieve the desired bending process effect.

[0098] It can be understood that when the fourth driving part 241 drives the bending part 242 to bend the pole ear 1011 of the collecting plate 101, due to the rigidity of the collecting plate 101, that is, the property of the collecting plate 101 to resist external force and not deform, when the pole ear 1011 of the collecting plate 101 is subjected to external force in the vertical direction by the bending part 242, the collecting plate 101 has a tendency to move away from the welding pressure head 111. Although the welding pressure head 111 has an adsorption force on the collecting plate 101, there is also a situation where the collecting plate 101 is lifted up or detached from the assembly plate 11 during the bending process, resulting in incomplete bending or bending failure.

[0099] Accordingly, the bending assembly 2 also includes a clamping mechanism 25, which is arranged on the mounting seat; the clamping mechanism 25 includes a fifth driving part 251 and a clamping part 252, which is arranged on the mounting seat through the fifth driving part 251 and drives the connected clamping part 252. When the clamping mechanism 25 moves to the top of the assembly plate 11, the fifth driving part 251 drives the clamping part 252 to move toward the position of the welding pressure head 111, and clamps the current collecting plate 101 to be bent placed on the welding pressure head 111. Therefore, when the bending part 242 bends the pole ear 1011 of the current collecting plate 101 in the vertical direction, it avoids the current collecting plate 101 from being tilted up from the position of the welding pressure head 111 or detached from the assembly plate 11, thereby ensuring the process effect of the bending process of the pole ear 1011 of the current collecting plate 101.

[0100] In particular, the fifth driving part 251 includes a linear driving device such as an electric cylinder, a pneumatic cylinder or a hydraulic cylinder, and the setting form of the fifth driving part 251 is not specifically limited here; the clamping part 252 includes a pressure block and other settings, and the setting form of the clamping part 252 is not specifically limited here.

[0101] In addition, please refer to Figure 8 The alternating pre-bending collecting plate welding device 100 also includes two positioning components 6, which are arranged at intervals at the first bending station 100a and the second bending station 100c, for positioning the collecting plate 101 to be bent; the two positioning components 6 each include a third base 61, a sixth driving part 62 and a mounting plate 63; the sixth driving part 62 is arranged on the third base 61; the mounting plate 63 is driven and connected to the driving end of the sixth driving part 62; wherein, when the assembly plate 11 is located at the loading station 11a and moves to the corresponding station of the bending component 2, the sixth driving part 62 is used to drive the mounting plate 63 to move toward the assembly plate 11.

[0102] It is understood that the collecting plate 101 is arranged in a planar manner, and the tabs 1011 are protruding from the circumference of the collecting plate 101. When the collecting plate 101 is placed on the assembly plate 11, positional deviation will occur. Therefore, the positioning assembly 6 is required to position the collecting plate 101 on the welding pressure head 111. In this embodiment, each positioning assembly 6 is arranged below each bending assembly 2, and the collecting plate 101 needs to be positioned before the bending process. Therefore, it can be concluded that the positioning assembly 6 and the bending assembly 2 have the same motion correspondence. Therefore, when the assembly plate 11 of the assembly assembly 1 is located at the loading station 11a, the positioning assembly 6 needs to move toward the position of the assembly plate 11 to position the collecting plate 101 placed on the assembly plate 11 at the welding pressure head 111. Specifically, the sixth driving unit 62 is arranged on the third base 61; it drives the connection mounting plate; when the assembly plate 11 is located at the loading station 11a, the sixth driving unit 62 drives the mounting plate to move toward the assembly plate 11.

[0103] In particular, the sixth driving part 62 includes a linear driving device such as an electric cylinder, a pneumatic cylinder or a hydraulic cylinder. The arrangement of the sixth driving part 62 is not specifically limited here.

[0104] It can be understood that the tabs 1011 are protruding from the peripheral side of the collecting plate 101 , and when the collecting plate 101 is placed on the assembly plate 11 , two types of position deviations may occur;

[0105] The first position deviation refers to: the position deviation of the collecting plate 101 relative to the welding pressure head 111; when the assembly plate 11 is located at the loading station 11a, the collecting plate 101 loading device starts to place the collecting plate 101 on the assembly plate 11, but due to the influence of various factors, the collecting plate 101 may deviate from the welding pressure head 111 on the assembly plate 11. As can be seen from the above, the welding pressure head 111 has an adsorption force on the collecting plate 101. If the collecting plate 101 deviates from the welding pressure head 111, it will further affect the welding pressure. At the same time, the pressing portion 252 cannot completely cover the current collecting disc 101, which will cause the portion of the current collecting disc 101 that is not covered by the pressing portion 252 to tilt away from the welding pressure head 111 when the bending portion 242 bends the tab 1011, causing the flatness of the entire current collecting disc 101 to change, which will affect the subsequent welding process, that is, the tilted portion of the current collecting disc 101 cannot be attached to the end of the battery cell 102, resulting in welding failure and the like, affecting the yield rate of battery production.

[0106] The second type of position deviation refers to: the position deviation of the pole tab 1011 relative to the bending portion 242; it can be understood that the third driving portion 22 drives the bending portion 242 to move in the up and down directions, that is, the bending portion 242 has a relatively unique movement trajectory. If the position where the pole tab 1011 protrudes from the peripheral side of the collecting plate 101 is not on the trajectory of the movement of the bending portion 242, the bending portion 242 will not contact the pole tab 1011, that is, the bending portion 242 does not bend the pole tab 1011 at all, or the bending portion 242 only contacts a part of the pole tab 1011, which will result in incomplete bending and affect the process effect of the bending process.

[0107] In summary, these two types of position deviations must be avoided during the battery production process.

[0108] Therefore, please refer to Figure 8 Both positioning assemblies 6 further include a positioning mechanism 64 and a correcting mechanism 65, both of which are arranged on the mounting plate 63; wherein, when the sixth driving part 62 drives the mounting plate 63 close to the assembly plate 11, the positioning mechanism 64 is used to position the collecting plate 101 to be bent placed on the welding pressure head 111; the correcting mechanism 65 is used to correct the collecting plate 101 to be bent placed on the welding pressure head 111.

[0109] Specifically, for the first position deviation, when the assembly plate 11 is located at the loading station 11a, the positioning mechanism 64 positions the collecting plate 101 to be bent placed on the welding pressure head 111, ensuring that the collecting plate 101 is completely corresponding to the setting of the welding pressure head 111, that is, ensuring that the clamping portion 252 completely covers the collecting plate 101 during the clamping process, thereby ensuring that the collecting plate 101 will not warp up or detach from the assembly plate 11 in the subsequent bending process; for the second position deviation, the correcting mechanism 65 corrects the collecting plate 101 to be bent placed on the welding pressure head 111, thereby ensuring that the relative position of the pole ear 1011 of the collecting plate 101 is on the movement trajectory of the bending portion 242, thereby ensuring that the pole ear 1011 of the collecting plate 101 is bent in place.

[0110] For further information, please refer to Figure 8The positioning mechanism 64 includes a seventh driving part 641 and a first clamping part 642; the seventh driving part 641 is arranged on the mounting plate 63; the first clamping part 642 is drivingly connected to the driving end of the seventh driving part 641; the correction mechanism 65 includes an eighth driving part 651 and a second clamping part 652; the eighth driving part 651 is arranged on the mounting plate 63; the second clamping part 652 is drivingly connected to the driving end of the eighth driving part 651; wherein, the seventh driving part 641 is used to drive the first clamping part 642 to clamp and position the current collecting plate 101 to be bent placed on the welding pressure head 111; the eighth driving part 651 is used to drive the second clamping part 652 to clamp and correct the pole ear 1011 of the current collecting plate 101 to be bent placed on the welding pressure head 111.

[0111] It can be understood that in order to realize the positioning of the collecting plate 101 relative to the welding pressure head 111 by the positioning mechanism 64, when the sixth driving part 62 drives the mounting plate close to the assembly plate 11, the seventh driving part 641 drives the first clamping part 642 to clamp and position the collecting plate 101 to be bent placed on the welding pressure head 111.

[0112] It can be understood that the seventh driving part 641 drives the first clamping part 642 to close, only contacting the edge of the collecting plate 101, and not squeezing the collecting plate 101. In this way, the collecting plate 101 is positioned relative to the welding pressure head 111 on the assembly plate 11, ensuring the smooth progress of the subsequent bending process and the complete fit relative to the end of the battery cell 102 during the welding process, thereby ensuring the process effect of the welding process.

[0113] In particular, the seventh driving part 641 includes a linear driving device such as an electric cylinder, a pneumatic cylinder or a hydraulic cylinder, and the setting form of the seventh driving part 641 is not specifically limited here; the first clamping part 642 can be set as a clamping device or a holding device, etc., and the specific setting form of the first clamping part 642 is not specifically limited here.

[0114] It can be understood that in order to achieve the positioning of the pole ear 1011 of the collecting plate 101 by the correction mechanism 65 on the relatively unique motion trajectory of the bending portion 242, when the sixth drive portion 62 drives the mounting plate close to the assembly plate 11, the eighth drive portion 651 drives the second clamping portion 652 to clamp and correct the pole ear 1011 of the collecting plate 101 to be bent placed on the welding pressure head 111, thereby ensuring the bending effect of the bending mechanism 24 on the pole ear 1011 of the collecting plate 101.

[0115] In particular, the eighth driving part 651 includes a linear driving device such as an electric cylinder, a pneumatic cylinder or a hydraulic cylinder, and the setting form of the eighth driving part 651 is not specifically limited here; the second clamping part 652 can be set as a clamping device or a holding device, etc., and the specific setting form of the second clamping part 652 is not specifically limited here.

[0116] It can be understood that after the positioning component 6 completes the positioning and correction of the collecting plate 101, it waits for the bending component 2 to bend the collecting plate 101. When the bending component 2 completes the bending process of the collecting plate 101, the third driving part 22 of the bending component 2 drives the mounting seat to reset the bending component 2, and the sixth driving part 62 of the positioning component 6 drives the mounting plate to reset the positioning component 6.

[0117] In addition, please refer to Figure 9 The alternating pre-bent current collecting plate welding device 100 also includes a pushing component 7, which is arranged at the welding station 100b and is arranged relative to the welding component 4; the pushing component 7 includes a pushing part 71 and a ninth driving part 72, and the pushing part 71 is drivingly connected to the driving end of the ninth driving part 72; wherein, when one of the two assembly components 1 is in the welding station 100b, and the corresponding assembly plate 11 is switched from the loading station 11a to the welding pressing station 11b, the ninth driving part 72 drives the pushing part 71 to approach the battery cell 102 to be welded, so that the pushing part 71 cooperates with the welding pressure head 111 to press the bent current collecting plate 101 to the end of the battery cell 102 to be welded.

[0118] It can be understood that when the bending process is completed, the assembly plate 11 is transferred from the loading station 11a to the welding and pressing station 11b when the second driving part 14 drives the rotating shaft 13 to rotate. After the battery cell 102 to be welded is transported to the welding and pressing station 11b by the transportation component 3, the end of the battery cell 102 has not yet abutted against the collecting plate 101, so the welding process cannot be completed.

[0119] Accordingly, the pushing part 71 is driven and connected to the driving end of the ninth driving part 72. When the assembly plate 11 switches from the loading station 11a to the welding and pressing station 11b, the ninth driving part 72 drives the pushing part 71 to approach the battery cell 102 to be welded, and then the pushing part 71 cooperates with the welding pressure head 111 to press the bent collecting plate 101 to the end of the battery cell 102 to be welded, so that the collecting plate 101 is abutted against the end of the battery cell 102, thereby facilitating the welding assembly 4 to weld the bent collecting plate 101 and the end of the battery cell 102 to be welded.

[0120] In particular, the ninth driving part 72 includes a linear driving device such as an electric cylinder, a pneumatic cylinder or a hydraulic cylinder. The setting form of the ninth driving part 72 is not specifically limited here. The pushing part 71 includes a device for installing or fixing the battery cell 102, so that when the ninth driving part 72 drives the battery cell 102 to move, the battery cell 102 does not move, affecting the fitting area with the collecting plate 101.

[0121] Understandably, please refer to Figure 9In order to timely understand whether the pushing portion 71 has brought the end of the battery cell 102 into contact with the collecting disc 101, a pressure sensing device 8 is provided on the pushing portion 71. When the pushing portion 71 pushes the end face of the battery cell 102 to contact the collecting disc 101, pressure begins to be generated between the pushing portion 71 and the other end of the battery cell 102. When the pressure sensing device 8 detects that the pressure reaches a preset threshold, it determines that the end of the battery cell 102 is sufficiently fitted and in contact with the collecting disc 101, and then welding is performed. In this way, it is ensured that the collecting disc 101 is pressed tightly against the end of the battery cell 102 during the welding process, thereby ensuring the welding effect between the end of the battery cell 102 and the collecting disc 101, thereby helping to improve the yield rate of battery production.

[0122] Specifically, the pressure sensing device 8 is arranged between the ninth driving part 72 and the pushing part 71, and the pressure sensing device 8 includes a mounting substrate 81, a fixed shaft 82, a pressure sensor 83, a spring 84, a pressure plate 85 and a limit block 86; the mounting substrate 81 is arranged on the end surface of the pushing part 71 facing the ninth driving part 72; the fixed shaft 82 is protruded from the mounting substrate 81; the pressure sensor 83 is arranged on the peripheral side of the fixed shaft 82; the spring 84 is sleeved on the fixed shaft 82, one end of which is in contact with the pressure sensor 83; the pressure plate 85 is drivingly connected to the ninth driving part 72; a through hole is penetrated at the end away from the ninth driving part 72 relative to the fixed shaft 82; the limit block 86 is protruded on the mounting substrate 81 relative to the pressure plate 85.

[0123] Understandably, please refer to Figure 9 The ninth driving part 72 drives the pressure plate 85 to move along the straight line. The pressure plate 85 is away from the driving end of the ninth driving part 72. Since a through hole is provided relative to the fixed shaft 82, the pressure plate 85 can move along the fixed shaft 82 through the through hole, thereby compressing the spring 84. The other end of the spring 84 begins to abut against the pressure sensor 83, and then the pressure sensor 83 begins to detect the pressure; under the elastic force of the spring 84, the pushing part 71 is pushed by the mounting substrate 81 to move toward the end of the battery cell 102, thereby driving the other end of the battery cell 102. The ninth driving part 72 is still driving the pressure plate 85 to move until the pressure plate 85 abuts against the limit block 86, and the spring 84 can no longer be compressed. Therefore, the pressure detected by the pressure sensor 83 is a constant value, which means that the end of the battery cell 102 has been pressed against the current collecting disk 101 on the assembly plate 11, and the welding process of the end of the battery cell 102 and the current collecting disk 101 can be started.

[0124] Understandably, please refer to Figure 9The pushing assembly 7 also includes a column 73. The pushing portion 71 and the ninth driving portion 72 are both arranged on the column 73. The column 73 supports the pushing portion 71 and the ninth driving portion 72. Since the assembly plate 11 has a certain installation height and the welding and pressing station 11 of the assembly plate 11 is perpendicular to the horizontal plane, the height of the welding pressure head 111 is further increased. Therefore, in order to accurately press the battery cell 102 onto the welding pressure head 111 through the pushing portion 71 and abut against the collecting plate 101, the pushing assembly 7 is provided with a column 73 to provide a certain height for the pushing assembly 7, so that the pushing portion 71, the battery cell 102 and the welding pressure head 111 are in a straight line on the horizontal plane, thereby accurately driving the battery cell 102 to move to the welding pressure head 111, thereby ensuring the quality and effect of the subsequent welding process.

[0125] It can be understood that in order to guide the moving direction of the pushing part 71, the pushing assembly is also provided with a sliding plate 74, a sliding block 65 and a sliding rail 76; the pushing part 71 is arranged on the sliding plate 74, and a slider 75 is protruding from the bottom of the sliding plate 74. The upper end surface of the column 73 is extended from the ninth driving part 72 toward the direction of the assembly component 1, and a sliding rail 76 is provided. The slider 75 and the slide rail 76 are slidably matched to make the sliding plate 74 move along the extension direction of the slide rail 76, thereby satisfying that the ninth driving part 72 drives the pushing part 71 to press the battery cell 102 onto the welding pressure head 111 more smoothly and fluently, thereby greatly reducing the driving resistance of the ninth driving part 72 to drive the pushing part 71.

[0126] In addition, please refer to Figure 10 , it can be understood that when the assembly plate 11 is in the welding and pressing station 11b, the pushing portion 71 of the pushing component 7 pushes the battery cell 102 toward the welding pressure head 111, so as to press the bent collecting plate 101 against the end of the battery cell 102, so as to facilitate the subsequent welding process; it can be understood that if the pressure of the abutment between the end of the battery cell 102 and the collecting plate 101 is insufficient, the quality of welding will be affected, and empty welding or loose welding will occur, resulting in defective products; in order to avoid this, the pushing force of the pushing portion 71 of the pushing component 7 to drive the battery cell 102 must be very large, which easily causes the assembly plate 11 perpendicular to the horizontal plane to bear a large pressure, and because the assembly plate 11 rotates with the rotating shaft 13, the huge thrust of the pushing portion 71 will easily cause the assembly plate 11 to rotate away from the battery cell 102, which will also affect the quality of subsequent welding.

[0127] In order to solve this problem, each assembly component is provided with a guide rail 15, a blocking cylinder 16, a blocking slide 17 and a blocking roller 18 corresponding to the assembly plate; the guide rail 15 is vertically installed on the first base 12 corresponding to the welding press station 11b of the assembly plate 11, and the blocking cylinder 16 is installed on the first base 12 relative to the guide rail 15. The driving end of the blocking cylinder 16 drives the connected blocking slide 17 to reciprocate along the extension direction of the guide rail 15, and the blocking roller 18 is installed on the free end of the blocking slide 17. Thus, when the assembly plate 11 is in the welding press position 11b, the blocking cylinder 16 is installed on the first base 12. At the moment of station 11b, the blocking slide 17 is driven down by the blocking cylinder 16, and the blocking roller 18 is pressed against the assembly plate 11 to prevent the assembly plate 11 from flipping toward the side away from the battery cell 102 when the pushing part 71 of the pushing component 7 is pressed against the battery cell 102. After the welding operation between the battery cell 102 and the collecting plate 101 is completed, the blocking slide 17 and the blocking roller 18 are driven to rise by the blocking cylinder 16; when the assembly plate 11 is in the loading station 11a for bending operation, the blocking cylinder 16 continues to drive the blocking slide 17 and the blocking roller 18 to remain in an upward state.

[0128] The above are merely exemplary embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's description and drawings, or direct / indirect application in other related battery production equipment technical fields within the technical concept of the present invention are included in the patent protection scope of the present invention.

Claims

1. A current collecting plate welding device with alternating pre-bending, characterized in that: A first bending station, a welding station and a second bending station are sequentially formed on the alternately pre-bent current collecting plate welding device; The alternately pre-bent collector plate welding device comprises: Two assembly components, including a first assembly component and a second assembly component, are used to suck the current collecting plate to be bent, or press the bent current collecting plate to the end of the battery cell to be welded; Two bending assemblies, including a first bending assembly and a second bending assembly, are respectively arranged at the first bending station and the second bending station, and are both used to bend the collecting plate to be bent; A transport assembly for transporting the battery cells to be welded to the welding station; and A welding assembly, arranged corresponding to the welding station, for welding the bent current collecting plate to the end of the battery cell to be welded; wherein the first assembly component and the second assembly component move back and forth synchronously; When the first assembly component moves to the first bending station, the second assembly component moves to the welding station; the first bending assembly bends the current collecting disc to be bent on the first assembly component, and the welding assembly welds the bent current collecting disc on the second assembly component to the end of the battery cell to be welded; When the first assembly component moves to the welding station, the second assembly component moves to the second bending station; the welding component welds the bent collecting plate on the first assembly component to the end of the battery cell to be welded, and the second bending component bends the collecting plate to be bent on the second assembly component.

2. The alternately pre-bent current collecting plate welding device according to claim 1, characterized in that: The alternately pre-bent current collecting plate welding device further includes a motion component, and the motion component includes: A movable seat is movably installed along the arrangement direction of the two bending components; the two assembly components are both arranged on the movable seat; and The first driving part is drivingly connected to the movable seat to drive the movable seat to move back and forth.

3. The alternately pre-bent current collecting plate welding device according to claim 1, characterized in that: The two assembly components each include a movable assembly plate and a plurality of welding pressure heads arranged on the assembly plate; the assembly plate has a loading station and a welding pressure station; When the assembly plate is located at the loading station, the multiple welding pressure heads are used to place and tightly absorb the current collecting plate to be bent; when the assembly plate flows from the loading station to the welding station, the multiple welding pressure heads are used to press the bent current collecting plate onto the end of the battery cell to be welded at the welding station; Among the two assembly components, when the assembly plate of one assembly component is at the loading station, the assembly plate of the other assembly component is at the welding station.

4. The alternately pre-bent current collecting plate welding device according to claim 3, characterized in that: Both assembly components further include: First Plinth; A rotating shaft is rotatably mounted on the first base; the assembly plate is fixed to the outer peripheral wall of the rotating shaft and is elongated along the axis of the rotating shaft; the rotating shaft drives the assembly plate to flip back and forth, so that the assembly plate circulates from the loading station to the welding station; and The second driving part is arranged on the first base and is drivingly connected to the rotating shaft.

5. The alternately pre-bent current collecting plate welding device according to claim 3, characterized in that: The two bending assemblies also include: Second base; a third driving unit, disposed on the second base; A mounting seat, drivingly connected to the driving end of the third driving part; Wherein, when the assembly plate is located at the loading station and moves to the corresponding station of the bending component, the third driving part is used to drive the mounting seat to move to just above the assembly plate.

6. The alternately pre-bent current collecting plate welding device according to claim 5, characterized in that: The two bending assemblies also include: The bending mechanism includes a fourth driving portion and a bending portion; the fourth driving portion is disposed on the mounting seat and drives the bending portion; and The pressing mechanism includes a fifth driving portion and a pressing portion; the fifth driving portion is disposed on the mounting seat and is driven and connected to the pressing portion; Among them, when the mounting seat moves to the top of the assembly plate, the fourth driving part is used to drive the bending part to bend the collecting plate to be bent which is adsorbed on the welding pressure head; the fifth driving part is used to drive the clamping part to clamp the collecting plate to be bent on the welding pressure head.

7. The alternately pre-bent current collecting plate welding device according to claim 3, characterized in that: The alternately pre-bent current collecting plate welding device further includes two positioning assemblies, which are arranged at intervals at the first bending station and the second bending station, for positioning the current collecting plate to be bent; the two positioning assemblies each include: third pedestal; a sixth driving unit, disposed on the third base; a mounting plate drivingly connected to the driving end of the sixth driving portion; Wherein, when the assembly plate is located at the loading station and moves to the corresponding station of the bending component, the sixth driving part is used to drive the installation plate to move toward the assembly plate.

8. The alternately pre-bent current collecting plate welding device according to claim 7, characterized in that: The two positioning assemblies also include a positioning mechanism and a correction mechanism, both of which are arranged on the mounting plate; Among them, when the sixth driving part drives the mounting plate close to the assembly plate, the positioning mechanism is used to position the collecting plate to be bent placed on the welding pressure head; the correcting mechanism is used to correct the collecting plate to be bent placed on the welding pressure head.

9. The alternately pre-bent current collecting plate welding device according to claim 8, characterized in that: The positioning mechanism includes a seventh driving portion and a first clamping portion; the seventh driving portion is arranged on the mounting plate; the first clamping portion is drivingly connected to the driving end of the seventh driving portion; The correction mechanism includes an eighth driving part and a second clamping part; the eighth driving part is arranged on the mounting plate; the second clamping part is drivingly connected to the driving end of the eighth driving part; Among them, the seventh driving part is used to drive the first clamping part to clamp and position the current collecting plate to be bent placed on the welding pressure head; the eighth driving part is used to drive the second clamping part to clamp and correct the pole ear of the current collecting plate to be bent placed on the welding pressure head.

10. The alternately pre-bent current collecting plate welding device according to claim 3, characterized in that: The alternately pre-bent current collecting plate welding device further includes a pushing assembly, which is disposed at the welding station and is arranged relative to the welding assembly; the pushing assembly includes a pushing portion and a ninth driving portion, and the pushing portion is drivingly connected to the driving end of the ninth driving portion; Among them, when one of the two assembly components is in the welding station and the corresponding assembly plate is switched from the loading station to the welding station, the ninth driving part drives the pushing part to approach the battery cell to be welded, so that the pushing part cooperates with the welding pressure head to press the bent collecting plate to the end of the battery cell to be welded.

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