Current collector plate welding device

Abstract

The application discloses a kind of current collector plate welding devices, it is related to battery production equipment technical field, wherein, current collector plate welding device includes assembly component, bending assembly, transport component and welding assembly;Assembly component includes the assembly plate of movable setting and the multiple welding pressure head of being set on assembly plate;Assembly plate has feeding station and welding pressure station;Bending assembly includes bending mechanism, to be bent to the current collector plate of being bent;Transport component is used to transport the battery cell to be welded to welding pressure station;Welding assembly is used to the current collector plate of having been bent and the end of battery cell to be welded is welded.The technical scheme of the present application changes the mode of battery processing procedure, avoids the pulling of the end of battery cell and current collector plate, and further protects the overcurrent surface between the end of battery cell and current collector plate, so as to ensure that the battery produced can reach the probability of increasing preset rated power when circuit is turned on, that is, the yield of battery production is improved.

Description

Technical Field

[0001] This invention relates to the field of battery production equipment technology, and in particular to a current collector welding device. Background Technology

[0002] As a core component of the new energy industry, the technological development and improvement of power lithium batteries have attracted much attention. Currently, a current collector is first welded to the end of the battery cell to form a current-carrying surface in the circuit. The size of the current-carrying surface determines the power of the battery when the circuit is turned on. Generally, the larger the current-carrying surface area, the greater the power generated when the battery is turned on, and the battery can perform its function more effectively. Then, when bending the tabs of the current collector that have been welded to the end of the battery cell, it is impossible to completely ensure that the welding surface between the end of the battery cell and the current collector is fixed during the bending process. Therefore, the welding surface between the end of the battery cell and the current collector is sometimes pulled when bending the tabs of the current collector, which reduces the area of ​​the current-carrying surface. As a result, the produced batteries often fail to reach the preset rated power when the circuit is turned on, which leads to a low yield rate of battery production. Summary of the Invention

[0003] The main objective of this invention is to provide a current collector welding device that avoids pulling on the welding surface and protects the battery overcurrent area.

[0004] To achieve the above objectives, the present invention provides a manifold welding device comprising:

[0005] An assembly assembly includes a movable assembly plate and multiple welding heads disposed on the assembly plate; the assembly plate has a loading station and a welding station.

[0006] A bending assembly, including a bending mechanism, for bending a manifold to be bent at the loading station;

[0007] A transport assembly for transporting the battery cells to be welded to the welding station; and,

[0008] Welding assembly, used to weld the bent current collector and the end of the battery cell to be welded;

[0009] When the assembly plate is located at the loading station, the plurality of welding heads are used to place and clamp the current collector to be bent; when the assembly plate is transferred from the loading station to the welding station, the plurality of welding heads are used to press the bent current collector onto the end of the cell to be welded at the welding station.

[0010] In one embodiment, the assembly assembly further includes:

[0011] First base;

[0012] 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 axial direction of the rotating shaft. The rotating shaft drives the assembly plate to reciprocate, thereby causing the assembly plate to circulate between the loading station and the welding station.

[0013] A first driving unit is disposed on the first base, and the driving end of the first driving unit is driven to connect to the rotating shaft.

[0014] In one embodiment, the bending assembly further includes:

[0015] Second base;

[0016] The second drive unit is disposed on the second base;

[0017] The mounting base is driven to the drive end of the second drive unit, and the bending mechanism is disposed on the mounting base;

[0018] When the assembly plate is located at the loading station, the second driving unit is used to drive the mounting base to move to directly above the assembly plate.

[0019] In one embodiment, the bending mechanism further includes:

[0020] The third drive unit is disposed on the mounting base;

[0021] The bending section is driven to the drive end of the third drive section; when the bending mechanism moves to directly above the assembly plate, the third drive section drives the bending section to approach the welding pressure head to bend the manifold plate to be bent.

[0022] In one embodiment, the bending assembly further includes a clamping mechanism disposed on the mounting base;

[0023] The clamping mechanism includes:

[0024] The fourth drive unit is disposed on the mounting base;

[0025] The clamping part is driven to the drive end of the fourth drive part; when the clamping mechanism moves to directly above the assembly plate, the fourth drive part drives the clamping part to move toward the position of the welding head and clamps the collector plate to be bent placed on the welding head.

[0026] In one embodiment, the manifold welding device further includes:

[0027] A positioning component is disposed below the bending component, and the positioning component includes a positioning mechanism and a correction mechanism;

[0028] When the assembly plate is located at the loading station, the positioning mechanism is used to position the collector plate to be bent placed on the welding press head, and the correction mechanism is used to correct the deviation of the collector plate to be bent placed on the welding press head.

[0029] In one embodiment, the positioning component further includes:

[0030] The third base;

[0031] The fifth drive unit is disposed on the third base;

[0032] The mounting plate is driven to the drive end of the fifth drive unit; the positioning mechanism and the correction mechanism are both disposed on the mounting plate.

[0033] When the assembly plate is located at the loading station, the fifth driving unit is used to drive the mounting plate to move toward the assembly plate.

[0034] In one embodiment, the positioning mechanism includes:

[0035] The sixth drive unit is mounted on the mounting plate;

[0036] The first clamping part is driven to be connected to the driving end of the sixth driving part; when the fifth driving part drives the mounting plate to approach the assembly plate, the sixth driving part is used to drive the first clamping part to clamp and position the manifold to be bent placed on the welding pressure head.

[0037] In one embodiment, the correction mechanism includes:

[0038] The seventh drive unit is disposed on the mounting plate;

[0039] The second clamping part is driven to the drive end of the seventh driving part. When the fifth driving part drives the mounting plate to approach the assembly plate, the seventh driving part drives the second clamping part to clamp and correct the tabs of the current collector plate to be bent placed on the welding pressure head.

[0040] In one embodiment, the manifold welding device further includes a pushing assembly, which includes a pushing part and an eighth driving part, wherein the pushing part is drivingly connected to the driving end of the eighth driving part;

[0041] When the assembly plate switches from the loading station to the welding station, the eighth driving unit drives the pushing unit to approach the cell to be welded, so that the pushing unit cooperates with the welding head to press the bent current collector plate tightly onto the end of the cell to be welded.

[0042] The technical solution of this invention involves loading a current collector to be bent onto the assembly plate at the loading station. The assembly plate remains in the loading station position while the bending mechanism bends the current collector. Then, the assembly plate switches to the welding station, where multiple welding heads press the bent current collector against the end of the cell to be welded at the welding station. Finally, a welding assembly welds the bent current collector and the end of the cell. This changes the battery processing procedure by first bending the tabs of the current collector and then welding the bent current collector to the end of the cell, avoiding pulling between the cell end and the current collector. This protects the flow surface between the cell end and the current collector, increasing the probability that the produced battery will reach the preset rated power when connected to the circuit, thus improving the battery yield. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0044] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the manifold welding device provided by the present invention;

[0045] Figure 2 for Figure 1 A three-dimensional structural diagram of the assembly plate of the intermediate assembly component located at the welding station;

[0046] Figure 3 for Figure 1 A three-dimensional structural diagram of the assembly plate of the intermediate assembly component located at the material loading station;

[0047] Figure 4 for Figure 1 A three-dimensional structural diagram of the bending component;

[0048] Figure 5 for Figure 4 A three-dimensional structural diagram of the bending component from the main view direction;

[0049] Figure 6 for Figure 1 A three-dimensional structural diagram of the positioning component;

[0050] Figure 7 for Figure 1 A three-dimensional structural diagram of the central driving component.

[0051] Explanation of icon numbers:

[0052] 100. Collector plate welding device; 1. Assembly assembly; 11. Assembly plate; 111. Welding pressure head; 11a. Loading station; 11b. Welding pressure station; 12. First base; 13. Rotating shaft; 14. First drive unit; 2. Bending assembly; 21. Bending mechanism; 211. Third drive unit; 212. Bending unit; 22. Second base; 23. Second drive unit; 24. Mounting seat; 25. Pressing mechanism; 251. Fourth drive unit; 252. Pressing unit; 3. Transport assembly; 4. Welding assembly; 5. Positioning assembly 51. Positioning mechanism; 511. Sixth drive unit; 512. First clamping unit; 52. Correction mechanism; 521. Seventh drive unit; 522. Second clamping unit; 53. Third base; 54. Fifth drive unit; 55. Mounting plate; 6. Pushing assembly; 61. Pushing unit; 62. Eighth drive unit; 63. Column; 64. Sliding plate; 65. Slider; 66. Slide rail; 7. Pressure sensing device; 71. Mounting base plate; 72. Fixed shaft; 73. Pressure sensor; 74. Spring; 75. Pressure plate; 76. Limiting block;

[0053] 101. Current collector; 1011. Electrode; 102. Battery cell.

[0054] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0056] 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 positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0057] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0058] As a core component of the new energy industry, the technological development and improvement of power lithium batteries have attracted much attention. Currently, a current collector is first welded to the end of the battery cell to form a current-carrying surface in the circuit. The size of the current-carrying surface determines the power of the battery when the circuit is turned on. Generally, the larger the current-carrying surface area, the greater the power generated when the battery is turned on, and the battery can perform its function more effectively. Then, when bending the tabs of the current collector that have been welded to the end of the battery cell, it is impossible to completely ensure that the welding surface between the end of the battery cell and the current collector is fixed during the bending process. Therefore, the welding surface between the end of the battery cell and the current collector is sometimes pulled when bending the tabs of the current collector, which reduces the area of ​​the current-carrying surface. As a result, the produced batteries often fail to reach the preset rated power when the circuit is turned on, which leads to a low yield rate of battery production.

[0059] To address the aforementioned problems, this invention proposes a current collector welding device, aiming to provide a current collector welding device with a high battery production yield. Figures 1 to 7 This is a schematic diagram of an embodiment of the manifold welding device of the present invention.

[0060] Please refer to Figures 1 to 3 In one embodiment of the present invention, the manifold welding device 100 includes an assembly assembly 1, a bending assembly 2, a transport assembly 3, and a welding assembly 4.

[0061] Assembly component 1 includes an assembly plate 11 that is movably set and a plurality of welding pressure heads 111 set on the assembly plate 11; the assembly plate 11 has a loading station 11a and a welding pressure station 11b;

[0062] The bending assembly 2 includes a bending mechanism 21 for bending the current collector 101 to be bent at the loading station 11a; the transport assembly 3 is used to transport the battery cell 102 to be welded to the welding station 11b.

[0063] Welding assembly 4 is used to weld the bent current collector 101 and the end of the battery cell 102 to be welded;

[0064] When the assembly plate 11 is located at the loading station 11a, multiple welding heads 111 are used to place and clamp the current collector 101 to be bent; when the assembly plate 11 is transferred from the loading station 11a to the welding station 11b, multiple welding heads 111 are used to press the bent current collector 101 against the end of the battery cell 102 to be welded at the welding station 11b.

[0065] The technical solution of this invention involves loading the current collector 101 to be bent onto the assembly plate 11 at the loading station 11a. The assembly plate 11 remains in the loading station 11a while the bending mechanism 21 bends the current collector 101. Then, the assembly plate 11 switches to the welding station 11b, where multiple welding heads 111 press the bent current collector 101 against the end of the battery cell 102 to be welded at the welding station 11b. Finally, the welding assembly 4 welds the bent current collector 101 and the battery cell 102 to be welded. The end of the cell 102 is welded. By changing the battery processing procedure, the tabs 1011 of the current collector 101 are bent first, and then the bent current collector 101 is welded to the end of the cell 102. This avoids the pulling between the end of the cell 102 and the current collector 101, thereby protecting the flow surface between the end of the cell 102 and the current collector 101. This increases the probability that the produced battery can reach the preset rated power when the circuit is connected, which also improves the yield rate of battery production.

[0066] In this embodiment, the transport component 3 employs a magnetic levitation transport mechanism (not shown in the accompanying drawings). Specifically, the transport component 3 includes a magnetic levitation transport stator and multiple magnetic levitation transport movers that move along the extension direction of the magnetic levitation transport stator. Each magnetic levitation transport mover is equipped with a cell carrier for clamping and releasing the battery cell 102. During transport, the battery cell 102 is placed flat within the cell carrier. Using a magnetic levitation transport mechanism as the transport component 3 eliminates mechanical friction, reduces power consumption, lowers noise, and increases efficiency. It eliminates the need for lubrication and sealing, solving the lubrication and energy consumption problems in high-speed mechanical design. The transport is stable and precise, and the stopping position of each magnetic levitation transport mover can be precisely controlled, ensuring the transport accuracy of the battery cell 102 and further improving the welding quality between the battery cell 102 and the collector plate 101.

[0067] In this embodiment, the transport component 3 can also be any transport mechanism capable of horizontal transport of the battery cell 102. Any transport mechanism capable of performing the same function as this solution is within the protection scope of this invention, and this embodiment does not specifically limit it.

[0068] It should be noted that in this application, the battery cell 102 is placed flat in the battery cell carrier. The battery cell 102 and the current collector 101 are welded using a horizontal welding process. Compared with the traditional vertical welding process of the battery cell 102 and the current collector 101, the horizontal welding current collector welding device 100 proposed in this solution can better accommodate the technology of "first bending the tabs 1011 of the current collector 101, and then welding the bent current collector 101 to the battery cell 102", thus completing the technical reform in the welding process of the battery cell 102 and the current collector 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 collector 101.

[0069] It is understandable that the flow paths of the loading station 11a and welding station 11b on the assembly plate 11 include straight lines or curves. However, these two sets of flow paths will cause two problems for the current collector welding device 100. First, the space occupancy rate of the device increases, which is not conducive to integrated production. Both straight and curved movements involve changes in spatial position. As a result, the device has to encompass these spatial positions, which leads to the device being bulky and complex. Second, the larger space occupancy rate makes it easier for defects or errors to occur in the coordination of various components during the movement and coordination process, which in turn can easily lead to a high defect rate in battery production and high economic costs.

[0070] Accordingly, in this embodiment, a loading station 11a and a welding station 11b are set on the assembly plate 11 along a rotation path. On the one hand, there is no change in spatial position, so the setting of the manifold 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 reduce economic costs.

[0071] Further, please refer to Figure 2 The assembly assembly 1 also includes a first base 12, a rotating shaft 13, and a first drive unit 14. The rotating shaft 13 is rotatably mounted on the first base 12. The assembly plate 11 is fixed 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 reciprocate and rotate, thereby driving the assembly plate 11 to circulate between the loading station 11a and the welding station 11b. The first drive unit 14 is mounted on the first base 12. The drive end of the first drive unit 14 is connected to the rotating shaft 13.

[0072] Understandably, in order to enable the assembly plate 11 to move between the loading station 11a and the welding station 11b via the rotation path of the assembly plate 11, a first drive unit 14 is installed on the first base 12. The drive end of the first drive unit 14 drives one end of the rotating shaft 13 along its length direction, enabling the rotating shaft 13 to rotate along its length axis. Then, the assembly plate 11 is installed around the rotating shaft 13, with one end of the assembly plate 11 fixed to the rotating shaft 13 along its length direction. The first drive unit 14 drives the rotating shaft 13 to rotate along its length axis, thereby causing the assembly plate 11 to rotate around the rotating shaft 13 along its length axis, thus realizing the switching of the assembly plate 11 between the loading station 11a and the welding station 11b on the rotation path.

[0073] In this embodiment, the first drive unit 14 is specifically configured as a servo motor, and the drive end of the servo motor is coaxially and fixedly connected to the rotating shaft 13 via a bearing mounted on the first base 12. By driving the rotating shaft 13 to rotate via the servo motor, the rotation angle of the rotating shaft 13 can be precisely controlled, thereby precisely controlling the flip angle of the assembly plate 11. This reduces the possibility that the welding station 11b cannot be aligned with the end of the current collector 101 or the battery cell 102 due to the flip angle of the assembly plate 11 exceeding or falling below the set angle, further improving the welding quality of the current collector 101 and the battery cell 102.

[0074] It is understood that the first drive unit 14 may also be a rotary motor or a hand crank driven by a human. As long as the solution of this embodiment can be realized, the specific configuration of the first drive unit 14 is not specifically limited here.

[0075] For example, specifically, the first drive unit 14 can drive the rotating shaft 13, the assembly plate 11, and multiple welding pressure heads 111 to simultaneously reciprocate at an angle of 90°, i.e. Figure 3 As shown, when the assembly plate 11 is arranged parallel to the horizontal plane, it is the loading station 11a, as follows. Figure 2 As shown, when the assembly plate 11 is vertically set along the horizontal plane, it is the welding station 11b. It should be noted that the flipping angle of the assembly plate 11 is set to 90°, which can reduce the driving stroke of the first driving part 14 and make it easier to control the flipping accuracy of the assembly plate 11.

[0076] In addition, please refer to Figure 4 The bending assembly 2 also includes a second base 22, a second drive unit 23, and a mounting base 24; the second drive unit 23 is disposed on the second base 22; the mounting base 24 is drivenly connected to the drive end of the second drive unit 23, and the bending mechanism 21 is disposed on the mounting base 24; wherein, when the assembly plate 11 is located at the loading station 11a, the second drive unit 23 is used to drive the mounting base 24 to move to directly above the assembly plate 11.

[0077] It is understood that, in this embodiment, the switching between the loading station 11a and the welding station 11b of the assembly plate 11 is achieved by the rotation of the rotating shaft 13. That is, the relative spatial position of the assembly plate 11 does not change, while the welding component 4 and the bending component 2 are arranged corresponding to the position of the assembly plate 11. As previously known, this embodiment performs a bending process on the manifold 101 before the welding process. Accordingly, when the assembly plate 11 is located at the loading station 11a, the bending component 2 is arranged; when the assembly plate 11 is located at the welding station 11b, the welding component 4 is arranged. Since the relative spatial position of the assembly plate 11 does not change, the position of the welding component 4 and the bending component 2 relative to the assembly plate 11 can be switched back and forth. This embodiment does not make more specific limitations on the arrangement of the welding component 4 and the bending component 2. Any solution that can achieve the same effect as this invention is within the protection scope of this invention.

[0078] Therefore, it can be understood that when the assembly plate 11 is located at the loading station 11a, the bending assembly 2 needs to move towards the position of the assembly plate 11 to perform a bending process on the collector plate 101 placed on the assembly plate 11 at the welding pressure head 111. Therefore, the second drive unit 23 is set on the second base 22, the second base 22 is fixed on a fixedly set upright (not shown in the figure), and the mounting base 24 is driven to be connected to the drive end of the second drive unit 23. The bending mechanism 21 is set on the mounting base 24. Then, when the assembly plate 11 is located at the loading station 11a, the second drive unit 23 drives the mounting base 24 to move to directly above the assembly plate 11, so that the bending mechanism 21 can perform a bending process on the tab 1011 of the collector plate 101 to be bent placed on the assembly plate 11 at the welding pressure head 111.

[0079] Specifically, the second drive unit 23 includes a linear drive device such as an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder, and the specific configuration of the second drive unit 23 is not limited here.

[0080] Further, please refer to Figure 4 The bending mechanism 21 also includes a third drive unit 211 and a bending unit 212; the third drive unit 211 is disposed on the mounting base 24; the bending unit 212 is drivenly connected to the drive end of the third drive unit 211; when the bending mechanism 21 moves to directly above the assembly plate 11, the third drive unit 211 is used to drive the bending unit 212 to approach the welding pressure head 111 to bend the manifold 101 to be bent.

[0081] Understandably, when the bending assembly 2 moves to the top of the assembly plate 11 via the second drive unit 23, the bending mechanism 21 begins to bend the tab 1011 of the collector plate 101 located on the welding pressure head 111 on the assembly plate 11. Specifically, the bending unit 212 is driven by the third drive unit 211 mounted on the mounting base 24. When the bending mechanism 21 moves to the top of the assembly plate 11, the third drive unit 211 drives the bending unit 212 to approach the welding pressure head 111 to bend the collector plate 101.

[0082] It is understood that in this embodiment, since the loading station 11a is set with the assembly plate 11 parallel to the horizontal plane, the third driving part 211 drives the bending part 212 to move in the vertical direction. When the bending part 212 passes the horizontal position of the assembly plate 11 in the vertical direction, the bending mechanism 21 performs the bending process of the tab 1011 of the collector plate 101.

[0083] Specifically, the third drive unit 211 includes a linear drive device such as an electric cylinder, pneumatic cylinder, or hydraulic cylinder. The specific configuration of the third drive unit 211 is not limited here. The bending unit 212 can be a drive block, a movable plate, etc. However, since such a configuration results in sliding friction between the bending unit and the tab 1011 of the collector 101, leading to significant wear on the surface of the collector 101 relative to the tab 1011, the bending unit 212 can also be configured as a roller. For example, in this embodiment, such as... Figure 4 As shown, the drive end of the third drive unit 211 is fixedly connected to a roller seat. A rotating shaft is installed inside the roller seat, and a roller is coaxially mounted on the rotating shaft. That is, when the bending unit 212 performs the bending process, the tabs 1011 of the collector plate 101 experience rolling friction. Since the rolling friction is less than the sliding friction, the wear of the tabs 1011 of the collector plate 101 by the bending unit 212 during the bending process is further reduced, and the bending process is made smoother, making it easier to achieve the desired bending effect.

[0084] Further, please refer to Figure 5 The bending assembly 2 also includes a clamping mechanism 25, which is disposed on the mounting base 24. The clamping mechanism 25 includes a fourth driving part 251 and a clamping part 252. The fourth driving part 251 is disposed on the mounting base 24. The clamping part 252 is driven to be connected to the driving end of the fourth driving part 251. When the clamping mechanism 25 moves to directly above the assembly plate 11, the fourth driving part 251 drives the clamping part 252 to move toward the position of the welding head 111 and clamps the collector plate 101 to be bent placed on the welding head 111.

[0085] It is understandable that when the third drive unit 211 drives the bending unit 212 to bend the tab 1011 of the collector plate 101, due to the rigid nature of the collector plate 101, that is, the property of the collector plate 101 resisting external forces and not deforming, when the tab 1011 of the collector plate 101 is subjected to an external force in the vertical direction by the bending unit 212, the collector 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 collector plate 101, there is also a possibility that the collector plate 101 may lift up or detach from the assembly plate 11 during the bending process, resulting in incomplete bending or bending failure.

[0086] Accordingly, the bending assembly 2 also includes a clamping mechanism 25, which is disposed on the mounting base 24. The clamping mechanism 25 includes a fourth driving part 251 and a clamping part 252. The fourth driving part 251 is disposed on the mounting base 24 and drives the clamping part 252. When the clamping mechanism 25 moves to the top of the assembly plate 11, the fourth driving part 251 drives the clamping part 252 to move toward the position of the welding head 111 and clamps the collector plate 101 to be bent placed on the welding head 111. Thus, when the bending part 212 bends the tab 1011 of the collector plate 101 in the vertical direction, it avoids the collector plate 101 from the position of the welding head 111 or from falling off the assembly plate 11, thereby ensuring the process effect of the bending process of the tab 1011 of the collector plate 101.

[0087] Specifically, the fourth drive unit 251 includes a linear drive device such as an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder, and the arrangement of the fourth drive unit 251 is not specifically limited here; the clamping unit 252 includes a clamping block or a clamping plate, and the arrangement of the clamping unit 252 is not specifically limited here.

[0088] In addition, please refer to Figure 6 It is understandable that the collector plate 101 is set in a plane and the tab 1011 protrudes from the periphery of the collector plate 101. When the collector plate 101 is placed on the assembly plate 11, two positional deviations will occur.

[0089] The first type of positional deviation refers to the positional deviation of the collector plate 101 relative to the welding pressure head 111. When the assembly plate 11 is located at the loading station 11a, the collector plate 101 loading device begins to place the collector plate 101 onto the assembly plate 11. However, due to various factors, there may be a deviation between the collector plate 101 and the welding pressure head 111 on the assembly plate 11. As previously mentioned, the welding pressure head 111 has an adsorption force on the collector plate 101. If there is a positional deviation between the collector plate 101 and the welding pressure head 111, it will further affect the welding pressure. The adsorption force of the head 111 on the current collector 101; at the same time, the clamping part 252 cannot completely press the current collector 101, which will cause the part of the current collector 101 not pressed by the clamping part 252 to lift away from the welding head 111 when the bending part 212 bends the tab 1011. This will cause the flatness of the entire current collector 101 to change, which will affect the subsequent welding process. That is, the lifted part of the current collector 101 cannot be attached to the end of the cell 102, resulting in welding failure and other situations, affecting the yield of battery production.

[0090] The second type of positional deviation refers to the positional deviation of the tab 1011 relative to the bending part 212. It can be understood that the third driving part 211 drives the bending part 212 to move in the up and down direction, that is, the bending part 212 has a relatively unique movement trajectory. If the position of the tab 1011 protruding from the periphery of the collector plate 101 is not on the movement trajectory of the bending part 212, then the bending part 212 will not contact the tab 1011. That is, the bending part 212 does not bend the tab 1011 at all, or the bending part 212 only contacts a part of the tab 1011, which will lead to incomplete bending and affect the process effect of the bending process.

[0091] In summary, these two positional deviations must be avoided during the battery production process.

[0092] Accordingly, the collector plate welding device 100 also includes a positioning component 5, which is located below the bending component 2. The positioning component 5 includes a positioning mechanism 51 and a correction mechanism 52. When the assembly plate 11 is located at the loading station 11a, the positioning mechanism 51 is used to position the collector plate 101 to be bent placed on the welding head 111, and the correction mechanism 52 is used to correct the tabs 1011 of the collector plate 101 to be bent placed on the welding head 111.

[0093] Specifically, for the first type of positional deviation, when the assembly plate 11 is located at the loading station 11a, the positioning mechanism 51 positions the collector plate 101 to be bent on the welding pressure head 111 to ensure that the collector plate 101 is completely aligned with the welding pressure head 111. That is, it ensures that the clamping part 252 completely covers the collector plate 101 during the clamping process, thereby ensuring that the collector plate 101 will not lift up or detach from the assembly plate 11 in the subsequent bending process. For the second type of positional deviation, the correction mechanism 52 corrects the collector plate 101 to be bent on the welding pressure head 111 to ensure that the relative position of the tab 1011 of the collector plate 101 is on the movement trajectory of the bending part 212, thereby ensuring that the tab 1011 of the collector plate 101 is bent in place.

[0094] Further, please refer to Figure 6 The positioning component 5 also includes a third base 53, a fifth drive unit 54, and a mounting plate 55; the fifth drive unit 54 is disposed on the third base 53; the mounting plate 55 is drivenly connected to the drive end of the fifth drive unit 54; the positioning mechanism 51 and the correction mechanism 52 are both disposed on the mounting plate 55; wherein, when the assembly plate 11 is located at the loading station 11a, the fifth drive unit 54 is used to drive the mounting plate 55 to move toward the assembly plate 11.

[0095] It is understood that in this embodiment, the positioning component 5 is located below the bending component 2. The collector plate 101 needs to be positioned before the bending process. Therefore, the positioning component 5 and the bending component 2 have the same movement correspondence. Thus, when the assembly plate 11 is located at the loading station 11a, the positioning component 5 needs to move towards the position of the assembly plate 11 to position and correct the alignment of the collector plate 101 placed on the assembly plate 11 at the welding pressure head 111.

[0096] Specifically, the fifth drive unit 54 is mounted on the third base 53; the drive connection mounting plate 55, the positioning mechanism 51 and the correction mechanism 52 are both mounted on the mounting plate 55; when the assembly plate 11 is located at the loading station 11a, the fifth drive unit 54 drives the mounting plate 55 to move toward the assembly plate 11, and moves the positioning mechanism 51 and the correction mechanism 52 to the position relative to the collector plate 101.

[0097] Understandably, this setup serves two purposes. First, the positioning mechanism 51 positions the collector plate 101 to be bent on the welding head 111, ensuring that the collector plate 101 is completely aligned with the welding head 111. This also ensures that the clamping part 252 completely covers the collector plate 101 during the clamping process, thereby preventing the collector plate 101 from lifting or detaching from the assembly plate 11 during the subsequent bending process. Second, the correction mechanism 52 corrects the alignment of the collector plate 101 to be bent on the welding head 111, ensuring that the relative position of the tabs 1011 of the collector plate 101 is on the movement trajectory of the bending part 212, thus ensuring that the tabs 1011 of the collector plate 101 are bent into place.

[0098] Specifically, the fifth drive unit 54 includes a linear drive device such as an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder, and the specific arrangement of the fifth drive unit 54 is not limited here.

[0099] Further, please refer to Figure 6 The positioning mechanism 51 includes a sixth driving part 511 and a first clamping part 512. When the fifth driving part 54 drives the mounting plate 55 to approach the assembly plate 11, the sixth driving part 511 drives the first clamping part 512 to clamp and position the collector plate 101 to be bent placed on the welding pressure head 111.

[0100] Understandably, in order to achieve the positioning mechanism 51 positioning the collector plate 101 relative to the welding pressure head 111, after the fifth drive unit 54 drives the mounting plate 55 to approach the assembly plate 11, the sixth drive unit 511 drives the first clamping unit 512 to clamp and position the collector plate 101 to be bent placed on the welding pressure head 111.

[0101] Understandably, the sixth driving part 511 drives the first clamping part 512 to close, only contacting the edge of the collector plate 101 without squeezing the collector plate 101. This achieves the positioning of the collector plate 101 on the assembly plate 11 relative to the welding pressure head 111, ensuring the smooth progress of the subsequent bending process and that it can be completely fitted relative to the end of the cell 102 in the welding process, thus ensuring the process effect of the welding process.

[0102] Specifically, the sixth drive unit 511 includes a linear drive device such as an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder, and the specific arrangement of the sixth drive unit 511 is not specifically limited here; the first clamping unit 512 can be configured as a gripper device or a holding device, and the specific arrangement of the first clamping unit 512 is not specifically limited here.

[0103] Further, please refer to Figure 6The correction mechanism 52 includes a seventh drive unit 521 and a second clamping unit 522. The seventh drive unit 521 is disposed on the mounting plate 55. The second clamping unit 522 is driven to be connected to the drive end of the seventh drive unit 521. When the fifth drive unit 54 drives the mounting plate 55 to approach the assembly plate 11, the seventh drive unit 521 drives the second clamping unit 522 to clamp and correct the tabs 1011 of the collector plate 101 to be bent placed on the welding pressure head 111.

[0104] Understandably, in order to ensure that the correction mechanism 52 positions the tabs 1011 of the collector plate 101 on a relatively unique motion trajectory of the bending part 212, specifically, the seventh drive unit 521 is set on the mounting plate 55 and drives the second clamping unit 522. When the fifth drive unit 54 drives the mounting plate 55 close to the assembly plate 11, the seventh drive unit 521 drives the second clamping unit 522 to clamp and correct the tabs 1011 of the collector plate 101 to be bent placed on the welding pressure head 111, thereby ensuring the bending effect of the bending mechanism 21 on the tabs 1011 of the collector plate 101.

[0105] Specifically, the seventh drive unit 521 includes a linear drive device such as an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder, and the specific arrangement of the seventh drive unit 521 is not specifically limited here; the second clamping unit 522 can be configured as a gripper device or a holding device, and the specific arrangement of the second clamping unit 522 is not specifically limited here.

[0106] Understandably, after the positioning component 5 completes the positioning and correction of the collector plate 101, it waits for the bending component 2 to bend the collector plate 101. After the bending component 2 completes the bending process of the collector plate 101, the second drive part 23 of the bending component 2 drives the mounting base 24 to reset the bending component 2, and the fifth drive part 54 of the positioning component 5 drives the mounting plate 55 to reset the positioning component 5.

[0107] In addition, please refer to Figure 7 The current collector welding device 100 also includes a pushing component 6, which includes a pushing part 61 and an eighth driving part 62. The pushing part 61 is driven to the driving end of the eighth driving part 62. When the assembly plate 11 switches from the loading station 11a to the welding station 11b, the eighth driving part 62 drives the pushing part 61 to approach the battery cell 102 to be welded, so that the pushing part 61 cooperates with the welding head 111 to press the bent current collector 101 to the end of the battery cell 102 to be welded.

[0108] Understandably, after the bending process is completed, the assembly plate 11 is transferred from the loading station 11a to the welding station 11b when the first drive unit 14 drives the rotating shaft 13 to rotate. The battery cell 102 to be welded is transported to the welding station 11b by the transport component 3. At this time, the end of the battery cell 102 has not yet come into contact with the current collector 101, so the welding process cannot be completed.

[0109] Accordingly, the driving end of the pushing unit 61 is driven to connect with the driving end of the eighth driving unit 62. When the assembly plate 11 switches from the loading station 11a to the welding station 11b, the eighth driving unit 62 drives the pushing unit 61 to approach the battery cell 102 to be welded. Then, the pushing unit 61 cooperates with the welding pressure head 111 to press the bent current collector 101 against the end of the battery cell 102 to be welded, so that the current collector 101 and the end of the battery cell 102 come into contact, thereby facilitating the welding assembly 4 to weld the bent current collector 101 and the end of the battery cell 102 to be welded.

[0110] Specifically, the eighth drive unit 62 includes a linear drive device such as an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder. The specific configuration of the eighth drive unit 62 is not limited here. The push unit 61 includes a device for mounting or fixing the battery cell 102 so that when the eighth drive unit 62 drives the battery cell 102 to move, the battery cell 102 does not shift, thus affecting the contact area with the collector plate 101.

[0111] Understandably, in order to promptly determine whether the pushing part 61 has brought the end of the cell 102 into contact with the current collector 101, a pressure sensing device 7 is also provided on the pushing part 61. When the pushing part 61 begins to push the end face of the cell 102 into contact with the current collector 101, pressure begins to exist between the pushing part 61 and the other end of the cell 102. When the pressure sensing device 7 detects that the pressure has reached a preset threshold, it is determined that the end of the cell 102 and the current collector 101 are sufficiently in contact and abutting, and then welding is performed. This ensures that the welding process is carried out while the current collector 101 is pressed tightly against the end of the cell 102, ensuring the welding effect between the end of the cell 102 and the current collector 101, thereby helping to improve the yield rate of battery production.

[0112] Specifically, the pressure sensing device 7 is disposed between the eighth driving part 62 and the pushing part 61. The pressure sensing device 7 includes a mounting base plate 71, a fixed shaft 72, a pressure sensor 73, a spring 74, a pressure plate 75, and a limiting block 76. The mounting base plate 71 is disposed on the end face of the pushing part 61 facing the eighth driving part 62. The fixed shaft 72 protrudes from the mounting base plate 71. The pressure sensor 73 is disposed around the fixed shaft 72. The spring 74 is sleeved on the fixed shaft 72, with one end in contact with the pressure sensor 73. The pressure plate 75 is drivenly connected to the eighth driving part 62. The end away from the eighth driving part 62 has a through hole through the fixed shaft 72. The limiting block 76 protrudes from the mounting base plate 71 relative to the pressure plate 75.

[0113] Understandably, the eighth drive unit 62 drives the pressure plate 75 to move linearly. The side of the pressure plate 75 away from the drive end of the eighth drive unit 62 has a through hole relative to the fixed shaft 72, allowing it to move along the fixed shaft 72 and compress the spring 74. The other end of the spring 74 then comes into contact with the pressure sensor 73, causing the pressure sensor 73 to detect pressure. Under the elastic force of the spring 74, the push unit 61 is pushed by the mounting plate 71 towards the end of the battery cell 102, thereby driving the battery cell 102... The other end is pressed against the current collector 101 on the welding head 111 of the assembly plate 11, thereby pressing the battery cell 102 tightly against the current collector 101 on the welding head 111. At this time, the eighth drive unit 62 continues to drive the pressure plate 75 to move until the pressure plate 75 abuts against the limit block 76, and then the spring 74 can no longer be compressed. Thus, the pressure detected by the pressure sensor 73 is a constant value, which means that the end of the battery cell 102 has been pressed against the current collector 101 on the assembly plate 11, and the welding process can begin on the end of the battery cell 102 and the current collector 101.

[0114] It is understandable that the push assembly 6 also includes a column 63. The push part 61 and the eighth drive part 62 are both mounted on the column 63. The column 63 supports the push part 61 and the eighth drive part 62. Since the assembly plate 11 has a certain installation height and the welding station 11 of the assembly plate 11 is perpendicular to the horizontal plane, the height of the welding head 111 is further increased. Therefore, in order to accurately press the battery cell 102 onto the welding head 111 through the push part 61 and make it abut against the current collector 101, the push assembly 6 is equipped with a column 63 to provide a certain height for the push assembly 6, so that the push part 61, the battery cell 102 and the welding head 111 are aligned on the horizontal plane, thereby accurately driving the battery cell 102 to move onto the welding head 111, thus ensuring the quality and effect of the subsequent welding process.

[0115] Understandably, in order to guide the movement direction of the pushing part 61, the pushing assembly is also provided with a sliding plate 64, a sliding block 65, and a slide rail 66. The pushing part 61 is disposed on the sliding plate 64, and a slider 65 protrudes from the lower part of the sliding plate 64. The upper end surface of the column 63 extends from the eighth driving part 62 toward the assembly assembly 1, and a slide rail 66 is provided. The slider 65 and the slide rail 66 are slidably engaged, so that the sliding plate 64 moves along the extension direction of the slide rail 66. This satisfies the requirement that the eighth driving part 62 drives the pushing part 61 to press the battery cell 102 onto the welding head 111 more smoothly and efficiently, greatly reducing the driving resistance of the eighth driving part 62 driving the pushing part 61.

[0116] The above are merely exemplary embodiments of the present invention and do not limit the scope of the patent of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A welding device for a manifold, characterized in that, include: The assembly assembly includes a movable assembly plate and a plurality of welding pressure heads disposed on the assembly plate; The assembly plate has a material loading station and a welding station; A bending assembly, including a bending mechanism, for bending a manifold to be bent at the loading station; A transport assembly for transporting the battery cells to be welded to the welding station; and, Welding assembly, used to weld the bent current collector and the end of the battery cell to be welded; When the assembly plate is located at the loading station, each welding head is used to place and clamp the current collector to be bent; when the assembly plate is transferred from the loading station to the welding station, each welding head is used to press the bent current collector onto the end of the battery cell to be welded at the welding station. The assembly assembly further includes a first base, a rotating shaft, and a first drive unit. The 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 arranged along the axial extension direction of the rotating shaft. The rotating shaft drives the assembly plate to reciprocate and rotate, thereby driving the assembly plate to circulate between the loading station and the welding station. The first drive unit is mounted on the first base, and the drive end of the first drive unit is driven and connected to the rotating shaft. The bending assembly further includes a second base, a second drive unit, and a mounting base. The second drive unit is disposed on the second base. The mounting base is driven to the drive end of the second drive unit, and the bending mechanism is disposed on the mounting base. When the assembly plate is located at the loading station, the second drive unit is used to drive the mounting base to move to directly above the assembly plate. The bending mechanism further includes a third driving part and a bending part. The third driving part is disposed on the mounting base. The bending part is driven to the driving end of the third driving part. When the bending mechanism moves to directly above the assembly plate, the third driving part is used to drive the bending part to approach the welding pressure head and bend the collector plate to be bent. The bending assembly further includes a clamping mechanism disposed on the mounting base; the clamping mechanism includes a fourth driving part and a clamping part, the fourth driving part being disposed on the mounting base; the clamping part is drivenly connected to the driving end of the fourth driving part; when the clamping mechanism moves to directly above the assembly plate, the fourth driving part drives the clamping part to move toward the position of the welding pressure head and clamps the collector plate to be bent placed on the welding pressure head.

2. The manifold welding device as described in claim 1, characterized in that, The manifold welding device further includes: A positioning component is disposed below the bending component, and the positioning component includes a positioning mechanism and a correction mechanism; When the assembly plate is located at the loading station, the positioning mechanism is used to position the collector plate to be bent placed on the welding press head, and the correction mechanism is used to correct the deviation of the collector plate to be bent placed on the welding press head.

3. The manifold welding device as described in claim 2, characterized in that, The positioning component also includes: The third base; The fifth drive unit is disposed on the third base; The mounting plate is driven to the drive end of the fifth drive unit; the positioning mechanism and the correction mechanism are both disposed on the mounting plate. When the assembly plate is located at the loading station, the fifth driving unit is used to drive the mounting plate to move toward the assembly plate.

4. The manifold welding device as described in claim 3, characterized in that, The positioning mechanism includes: The sixth drive unit is mounted on the mounting plate; The first clamping part is driven to be connected to the driving end of the sixth driving part; when the fifth driving part drives the mounting plate to approach the assembly plate, the sixth driving part is used to drive the first clamping part to clamp and position the manifold to be bent placed on the welding pressure head.

5. The manifold welding device as described in claim 3, characterized in that, The correction mechanism includes: The seventh drive unit is disposed on the mounting plate; The second clamping part is driven to the drive end of the seventh driving part. When the fifth driving part drives the mounting plate to approach the assembly plate, the seventh driving part drives the second clamping part to clamp and correct the tabs of the current collector plate to be bent placed on the welding pressure head.

6. The manifold welding device as described in claim 1, characterized in that, The collector welding device further includes a pushing assembly, which includes a pushing part and an eighth driving part, and the pushing part is drivingly connected to the driving end of the eighth driving part. When the assembly plate switches from the loading station to the welding station, the eighth driving unit drives the pushing unit to approach the cell to be welded, so that the pushing unit cooperates with the welding head to press the bent current collector plate against the end of the cell to be welded.

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