Current collector plate welding apparatus and welding method

Abstract

The application discloses a current collecting disc welding device and a welding method, and relates to the technical field of battery processing. The current collecting disc welding device utilizes a feeding device to respectively send rotatable battery cells to a deviation rectifying station and a welding station. When the battery cells reach the deviation rectifying station, an information collecting device is utilized to acquire the information of the to-be-welded areas of the current collecting discs on the battery cells. Then, the deviation rectifying device drives the battery cells to rotate according to the feedback information of the information collecting device, so that the information of the to-be-welded areas on the current collecting discs is in a preset distribution state, thereby realizing deviation rectification. When the battery cells that have completed deviation rectification reach the welding station, a deviation rectifying auxiliary device is utilized to press against the current collecting discs, and then a welding device performs a welding operation. Through the above design combination, the positioning accuracy of the current collecting discs is better, and the welding quality is effectively improved.

Description

Technical Field

[0001] This application relates to the field of battery processing technology, and in particular to current collector welding equipment and welding methods. Background Technology

[0002] During the assembly of cylindrical battery cells, the current collector plate needs to be welded and fixed to the battery casing. Existing current collector plate welding equipment works by: gripping the current collector plate with a gripping mechanism, placing it on the end face of the battery cell, and then pressing it firmly against the end face of the cell using a clamping mechanism before welding. However, this welding method makes it difficult to control the positional accuracy between the current collector plate and the battery cell, which can easily affect the welding quality. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a manifold welding device and welding method to solve the technical problems of poor manifold positioning accuracy and low welding quality in existing manifold welding devices.

[0004] To achieve the above technical objectives, this application provides a manifold welding device, including a feeding device, an information acquisition device, a correction device, a welding auxiliary device, and a welding device.

[0005] The feeding device is used to transport rotatable battery cells;

[0006] The information acquisition device is used to acquire information about the welding area of ​​the current collector on the battery cell when the feeding device delivers the battery cell to the correction station;

[0007] The correction device drives the battery cell to rotate to the welding area of ​​the current collector plate in a preset distribution state based on the feedback information from the information acquisition device.

[0008] The welding auxiliary device is used to press against the collector plate when the feeding device delivers the battery cell to the welding station;

[0009] The welding device is used to weld the manifold at the welding station.

[0010] Furthermore, the correction device includes a correction frame, a correction drive mechanism, and a correction mechanism;

[0011] The correction drive mechanism is mounted on the correction frame and connected to the correction mechanism, and is used to drive the correction mechanism to move so that the correction mechanism contacts the battery cell or the current collector.

[0012] The correction mechanism is used to drive the battery cell to rotate.

[0013] Furthermore, the correction mechanism includes a correction fixing base, a correction rotating component, and a correction rotating driver;

[0014] The corrective rotating component is provided with a corrective clamping structure that can contact and abut against the collector plate;

[0015] The correction rotation drive is mounted on the correction fixing base and connected to the correction rotation component, and is used to drive the correction rotation component to rotate.

[0016] Furthermore, the correction rotating component is rotatably mounted on the correction fixing base and is provided with a correction through cavity for the battery cell to extend into;

[0017] The correction clamping structure is disposed in the correction cavity, including a correction pressure plate and multiple correction connecting blocks;

[0018] Multiple correction connecting blocks are circumferentially distributed within the correction cavity and connected to the correction rotating component;

[0019] A correction correspondence area corresponding to the area to be welded is formed between adjacent correction connection blocks;

[0020] The information acquisition device is located above the correction rotating component.

[0021] Furthermore, the welding auxiliary device includes a welding auxiliary frame, an auxiliary drive mechanism, and an auxiliary mechanism;

[0022] The auxiliary drive mechanism is mounted on the welding auxiliary frame and connected to the auxiliary mechanism, and is used to drive the auxiliary mechanism to move so that the auxiliary mechanism comes into contact with the collector plate.

[0023] Furthermore, the auxiliary mechanism is also used to drive the battery cell to rotate in order to switch the area to be welded.

[0024] Furthermore, the auxiliary mechanism includes an auxiliary fixed base, an auxiliary rotating component, and an auxiliary rotating driver;

[0025] The auxiliary rotating component is provided with an auxiliary pressing structure that can contact and abut against the collecting plate;

[0026] The auxiliary rotation driver is mounted on the auxiliary fixed base and connected to the auxiliary rotating component, and is used to drive the auxiliary rotating component to rotate.

[0027] Furthermore, the auxiliary rotating component is rotatably mounted on the auxiliary fixed base and is provided with a welding through cavity for the battery cell to extend into;

[0028] The auxiliary clamping structure is disposed in the welding cavity and includes an auxiliary pressure plate and multiple auxiliary connecting blocks;

[0029] Multiple auxiliary connecting blocks are circumferentially distributed within the welding cavity and connected to the auxiliary rotating component;

[0030] A welding avoidance area corresponding to the area to be welded is formed between adjacent auxiliary connecting blocks.

[0031] Furthermore, the auxiliary mechanism also includes a dust removal hood;

[0032] The dust cover is installed above the auxiliary rotating component and has a welding opening that connects to the welding cavity.

[0033] Furthermore, a battery cell fixing device is installed on the feeding device;

[0034] The battery cell fixing device includes a battery cell fixing mechanism;

[0035] The battery cell fixing mechanism is provided with a rotatable accommodating cavity into which the battery cell is inserted.

[0036] Furthermore, the cell fixing device also includes a cell frame;

[0037] The cell fixing mechanism is movably mounted on the cell frame;

[0038] The welding auxiliary device also includes a battery cell drive mechanism;

[0039] The cell driving mechanism is detachably connected to the cell fixing mechanism located at the welding station, and is used to drive the cell fixing mechanism to move, so that the cell located at the correction station can move closer to or further away from the welding auxiliary device.

[0040] Furthermore, the battery cell fixing device also includes a battery cell clamping mechanism;

[0041] The cell clamping mechanism is mounted on the cell fixing mechanism and is used to clamp and fix the cell.

[0042] Furthermore, the battery cell fixing mechanism comprises multiple components;

[0043] There are multiple correction mechanisms, each corresponding to a cell fixing mechanism;

[0044] There are multiple information acquisition devices, each corresponding to a cell fixing mechanism.

[0045] Furthermore, the welding apparatus includes a pre-welding device and a full-welding device arranged sequentially along the feeding path of the feeding device;

[0046] The welding station includes a pre-welding station and a full-welding station;

[0047] The pre-welding device is used to spot weld the two ends of the area to be welded of the collector plate at the pre-welding station.

[0048] The full welding device is used to perform full welding on the area to be welded of the manifold at the full welding station.

[0049] The welding auxiliary device is provided on each of the pre-welding station and the full-welding station.

[0050] Furthermore, there are multiple full-welding devices, the same number as the number of the correction mechanisms;

[0051] There are multiple full welding stations, each corresponding to a full welding device;

[0052] The welding auxiliary device located at the pre-welding station has multiple auxiliary mechanisms, each corresponding to a cell fixing mechanism.

[0053] Each of the auxiliary mechanisms of the welding auxiliary device located at the full welding station corresponds to one of the battery cell fixing mechanisms;

[0054] The laser generators of both the pre-welding device and the full-welding device are adjustable, so that the laser generators can respectively weld the current collectors on the cell fixing mechanism.

[0055] This application also discloses a manifold welding method, applied to the aforementioned manifold welding equipment, comprising the following steps:

[0056] Information on the welding area of ​​the current collector on the battery cell located in the correction station is obtained through an information acquisition device. The battery cell located in the correction station is delivered by a feeding device and is rotatable.

[0057] Based on the feedback information from the information acquisition device, the correction device drives the battery cell located in the correction station to rotate until the welding area of ​​the current collector on the battery cell is in a preset distribution state.

[0058] The current collector on the battery cell located in the welding station is pressed by a welding auxiliary device, wherein the battery cell located in the welding station is delivered by a feeding device;

[0059] The current collector on the battery cell located at the welding station is welded using a welding device.

[0060] As can be seen from the above technical solution, the current collector welding equipment designed in this application utilizes a feeding device to deliver rotatable battery cells to the correction station and the welding station respectively. When the battery cell reaches the correction station, an information acquisition device acquires information about the welding area of ​​the current collector on the battery cell. Then, the correction device drives the battery cell to rotate according to the feedback information from the information acquisition device until the welding area information on the current collector is in a preset distribution state, thereby achieving correction. When the corrected battery cell reaches the welding station, a correction auxiliary device presses against the current collector, and then the welding device performs the welding operation. Through the above design combination, better positioning accuracy of the current collector is achieved, effectively improving the welding quality. Attached Figure Description

[0061] To more clearly illustrate the technical solutions in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0062] Figure 1 This is a schematic diagram of the overall structure of the manifold welding equipment provided in this application;

[0063] Figure 2 A perspective view showing the cooperation between the correction device and the information acquisition device of the manifold welding equipment provided in this application;

[0064] Figure 3 A cross-sectional view showing the cooperation between the correction device and the information acquisition device of the manifold welding equipment provided in this application;

[0065] Figure 4 This is a schematic diagram of a first partial structure of the correction device for the manifold welding equipment provided in this application, which includes a welding simulation laser circuit.

[0066] Figure 5 This is a second partial structural schematic diagram of the correction device for the manifold welding equipment provided in this application;

[0067] Figure 6 A perspective view of the correction rotating component of the manifold welding equipment provided in this application;

[0068] Figure 7 A perspective view of the correction rotary actuator of the manifold welding equipment provided in this application;

[0069] Figure 8 A perspective view showing the cooperation between the pre-welding device and the welding auxiliary device of the manifold welding equipment provided in this application;

[0070] Figure 9This is a schematic diagram of the cell fixing device structure of the current collector welding equipment provided in this application;

[0071] Figure 10 A perspective view of the cell feeding device of the current collector welding equipment provided in this application;

[0072] Figure 11 A flowchart of the manifold welding method provided in this application;

[0073] In the diagram: 100, feeding device; 101, feeding turntable; 200, correction device; 201, correction frame; 202, correction drive mechanism; 203, correction mechanism; 300, information acquisition device; 301, acquisition frame; 400, welding auxiliary device; 500, welding device; 501, pre-welding device; 502, second welding device; 503, third welding device; 600, cell fixing device; 700, cell loading device; 800, cell unloading device; 11, correction fixing seat; 12, correction rotating component; 120, correction clamping structure; 121, correction connecting block; 122, correction pressure plate; 123, correction corresponding area; 13. 14. Correction rotary driver; 15. Correction rotary motor; 16. Correction drive gear; 21. Correction driven gear; 22. Welding auxiliary frame; 23. Auxiliary drive mechanism; 24. Auxiliary mechanism; 25. Dust hood; 31. Battery cell drive mechanism; 31. Battery cell fixing mechanism; 311. Base; 312. Battery cell carrier; 32. Battery cell frame; 4. Battery cell clamping mechanism; 41. Clamping driver; 42. Battery cell gripper; 51. Laser generator; 52. First displacement drive mechanism; 53. Second displacement drive mechanism; 54. Laser frame; 61. Loading robot; 621. Picking rotary motor; 622. Mounting plate; 623. Picking gripper. Detailed Implementation

[0074] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0075] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0076] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0077] This application discloses a manifold welding device.

[0078] Please see Figure 1 One embodiment of the manifold welding equipment provided in this application includes:

[0079] The device includes a feeding device 100, an information acquisition device 300, a deviation correction device 200, a welding auxiliary device 400, and a welding device 500.

[0080] The feeding device 100 is used to transport rotatable battery cells.

[0081] The information acquisition device 300 is used to acquire information about the welding areas of the current collector on the battery cell when the feeding device 100 transports the battery cell to the correction station. It should be noted that the number and distribution of the welding areas can be determined based on the actual current collector structure and welding requirements. For example, if the current collector has multiple flanges that fit against the inner wall of the battery cell casing, then each flange area can be considered a welding area. Alternatively, if the current collector has a single ring of flanges, then several areas can be designated as welding areas within that ring of flanges; there is no specific limitation. The information acquisition device 300 can be a visual sensor, such as a CCD camera.

[0082] The correction device 200 drives the battery cell to rotate to the welding area of ​​the current collector plate in a preset distribution state based on the feedback information of the information acquisition device 300. When the welding area on the current collector plate is in the preset distribution state, the correction of the current collector plate can be completed, so that the current collector plate can reach the welding station in an accurate posture to ensure the accuracy of welding.

[0083] The welding auxiliary device 400 is used to press against the collector plate when the feeding device 100 delivers the battery cell to the welding station, so as to prevent the collector plate from shifting during the welding process and affecting the welding effect.

[0084] The welding device 500 is used to weld the manifold at the welding station.

[0085] In summary, the current collector welding equipment designed in this application utilizes a feeding device 100 to deliver rotatable battery cells to a correction station and a welding station respectively. When a battery cell reaches the correction station, an information acquisition device 300 acquires information about the welding area of ​​the current collector on the battery cell. Then, the correction device 200 drives the battery cell to rotate based on the feedback information from the information acquisition device 300, until the welding area information on the current collector is in a preset distribution state, thus achieving correction. When the corrected battery cell reaches the welding station, a correction auxiliary device presses against the current collector, and then the welding device 500 performs the welding operation. Through the above design combination, better current collector positioning accuracy is achieved, effectively improving welding quality.

[0086] The above is Embodiment 1 of the manifold welding equipment provided in this application. The following is Embodiment 2 of the manifold welding equipment provided in this application. Please refer to the following for details. Figures 1 to 10 .

[0087] Based on the solution of Embodiment 1 above:

[0088] like Figure 2 As shown, the correction device 200 further includes a correction frame 201, a correction drive mechanism 202, and a correction mechanism 203 in terms of structural design.

[0089] The web correction drive mechanism 202 is mounted on the web correction frame 201 and connected to the web correction mechanism 203. It drives the web correction mechanism 203 to move, bringing it into contact with the battery cell or current collector. The web correction mechanism 203 drives the battery cell to rotate. In a specific design, the web correction drive mechanism 202 drives the web correction mechanism 203 to move up and down, thus moving it closer to or further away from the battery cell. The web correction drive mechanism 202 can be a single-axis manipulator, such as a lifting cylinder or a lead screw slide, etc., and there are no specific limitations.

[0090] like Figure 3As shown, the correction mechanism 203 further includes a correction fixing base 11, a correction rotating component 12, and a correction rotating driver 13. The correction rotating component 12 is provided with a correction clamping structure 120 that can contact and abut against the collector plate; the correction rotating driver 13 is mounted on the correction fixing base 11 and connected to the correction rotating component 12, and is used to drive the correction rotating component 12 to rotate.

[0091] like Figures 4 to 6 As shown, the correction rotating component 12 is rotatably mounted on the correction fixing seat 11 through a corresponding bearing component, and is provided with a correction through cavity into which the power supply core extends. The correction fixing seat 11 is connected to the correction drive mechanism 202 and is driven by the correction drive mechanism 202 to move upward.

[0092] The correction clamping structure 120 is disposed in the correction passage cavity, including the correction pressure plate 122 and a plurality of correction connecting blocks 121. The plurality of correction connecting blocks 121 are circumferentially distributed in the correction passage cavity and are detachably connected to the correction rotating member 12. A correction corresponding area 123 corresponding to the area to be welded is formed between adjacent correction connecting blocks 121.

[0093] The information acquisition device 300 is fixed by the acquisition frame 301 and is located above the correction rotating component 12.

[0094] In the specific correction process, an initial state can be set for the correction rotating component 12, and the distribution state of the correction corresponding area 123 in the initial state is exactly aligned with the welding corresponding area in the preset distribution state. After the information acquisition device 300 collects the information of the area to be welded on the current collector plate in the correction station, it can feed it back to the control system. The control system compares the current distribution information of the area to be welded with the preset distribution information to obtain the deviation angle between the current collector plate and the correction rotating component 12. Then, according to the deviation angle, the correction rotating driver 13 is controlled to drive the correction rotating component 12 to rotate, so that the correction corresponding area 123 on the correction rotating component 12 is aligned with the area to be welded on the current collector plate. Then, the correction driving mechanism 202 is controlled to drive the correction rotating component 12 to lift, so that the correction pressure plate 122 on the correction rotating component 12 contacts and abuts against the current collector plate. Then, the correction rotating driver 13 is driven to drive the correction rotating component 12 to reset and rotate, thereby driving the battery cell to rotate. When the battery cell follows the correction rotating component 12 to complete the reset and rotation, the area to be welded on the current collector plate is also in the preset distribution state, thus completing the correction of the current collector plate.

[0095] like Figure 7As shown, the design of the correction rotary drive 13 includes a correction rotary motor 14, a correction drive gear 15, and a correction driven gear 16. The correction rotary motor 14 can be an existing servo motor that can rotate in both directions, without limitation. The correction drive gear 15 is fixed on the output shaft of the correction rotary motor 14, while the correction driven gear 16 is sleeved on the correction rotating component 12 and meshes with the correction drive gear 15.

[0096] like Figure 8 As shown, the welding auxiliary device 400 is further designed to include a welding auxiliary frame 21, an auxiliary drive mechanism 22, and an auxiliary mechanism 23.

[0097] The auxiliary drive mechanism 22 is mounted on the welding auxiliary frame 21 and connected to the auxiliary mechanism 23. It is used to drive the auxiliary mechanism 23 to move so that the auxiliary mechanism 23 comes into contact with the collector plate. The auxiliary drive mechanism 22 can be a single-axis manipulator, such as a lifting cylinder, specifically driving the auxiliary mechanism 23 to move closer to or away from the collector plate in the welding station.

[0098] Furthermore, the auxiliary mechanism 23 is also used to drive the battery cell to rotate to switch the areas to be welded. It is understood that the auxiliary mechanism 23 is not only used to press the current collector on the battery cell, but also to drive the current collector to rotate, thereby switching between different areas to be welded for welding by the welding device 500. Of course, in this application, if the auxiliary mechanism 23 is only used to press the current collector, then the welding operation of multiple areas to be welded can be achieved by relying on the movement of the laser head in the welding device 500.

[0099] Furthermore, the auxiliary mechanism 23 includes an auxiliary fixed base (not shown in the figure), an auxiliary rotating component (not shown in the figure), and an auxiliary rotation driver (not shown in the figure); the auxiliary rotating component is provided with an auxiliary clamping structure that can contact and abut against the collecting plate; the auxiliary rotation driver is mounted on the auxiliary fixed base and connected to the auxiliary rotating component, and is used to drive the auxiliary rotating component to rotate. This auxiliary mechanism 23 has the same structure as the aforementioned correction mechanism 203, and the specific details can be referred to the aforementioned correction mechanism 203, which will not be repeated here.

[0100] Furthermore, the auxiliary rotating component is rotatably mounted on the auxiliary fixed base and has a welding cavity into which the power supply core extends; the auxiliary clamping structure is set in the welding cavity, including an auxiliary pressure plate and multiple auxiliary connecting blocks; the multiple auxiliary connecting blocks are circumferentially distributed in the welding cavity and connected to the auxiliary rotating component; a welding avoidance area is formed between adjacent auxiliary connecting blocks corresponding to the area to be welded. Similarly, the installation method of the auxiliary rotating component and the internal auxiliary clamping structure are the same as those of the aforementioned correction mechanism 203, and the specific design can be referred to the aforementioned correction mechanism 203, which will not be repeated here. This welding avoidance area corresponds to the area to be welded after correction, so that the welding laser can pass through for welding.

[0101] like Figure 8 As shown, further, unlike the aforementioned correction mechanism 203, the auxiliary mechanism 23 of this application also includes a dust removal hood 24. The dust removal hood 24 is installed above the auxiliary rotating part and is provided with a welding opening that connects to the welding cavity and a negative pressure port. The welding opening facilitates the entry of the welding laser, and the negative pressure port is used to connect to a vacuum generator to remove welding slag.

[0102] like Figure 9 As shown, further, in order to facilitate the conveying of battery cells, a battery cell fixing device 600 is installed on the feeding device 100. The battery cell fixing device 600 includes a battery cell fixing mechanism 31, which is provided with a rotatable receiving cavity into which the battery cell is inserted.

[0103] The feeding device 100 can be a linear conveyor or a rotary conveyor, with a rotary conveyor being preferred due to its more compact structure compared to a linear conveyor. Taking a rotary conveyor as an example, the feeding device 100 can specifically include a feeding rotary motor (not shown) and a feeding rotary disk 101. The feeding rotary motor is connected to the feeding rotary disk 101 and drives the feeding rotary disk 101 to rotate. The feeding device 100 can then be fixed to the feeding rotary disk 101, which can be a regular polygonal disk; no specific limitation is imposed.

[0104] Regarding the design of the battery cell fixing mechanism 31, it may include a base 311; the base 311 is provided with a battery cell carrier 312, which may be rotatably configured to allow the battery cell to rotate, or the battery cell carrier 312 may have a rotatable bearing component inside, so that the battery cell placed on the battery cell carrier 312 can rotate, and there is no specific limitation.

[0105] Furthermore, to facilitate the installation and arrangement of the cell fixing mechanism 31, the cell fixing device 600 also includes a cell frame 32, on which the cell fixing mechanism 31 is movably mounted; specifically, the cell fixing mechanism 31 can be slidably mounted on the cell frame 32 via a slide rail cooperation structure.

[0106] To drive the cell fixing mechanism 31 to move up and down, the welding auxiliary device 400 also includes a cell drive mechanism 25. This cell drive mechanism 25 can be a single-axis manipulator, such as a lifting cylinder, an electric push rod, etc., with no specific limitations. The cell drive mechanism 25 is detachably connected to the cell fixing mechanism 31 located at the welding station, and is used to drive the cell fixing mechanism 31 to move, allowing the cell at the correction station to move closer to or further away from the welding auxiliary device 400. By using the cell drive mechanism 25 in conjunction with the movable cell fixing mechanism 31, the contact efficiency between the cell and the auxiliary clamping structure can be improved, thereby increasing welding efficiency. Of course, in addition to this detachable design, the cell drive mechanism 25 can also be directly mounted on the cell frame 32 and connected to the cell fixing mechanism 31 to drive the cell fixing mechanism 31 to move.

[0107] like Figure 9 As shown, the battery cell fixing device 600 further includes a battery cell clamping mechanism 4; the battery cell clamping mechanism 4 is installed on the battery cell fixing mechanism 31 and is used to clamp and fix the battery cell. During information acquisition, the battery cell can be fixed by the battery cell clamping mechanism 4 to prevent the battery cell from rotating, thus affecting the accuracy of information acquisition. Moreover, the battery cell clamping mechanism 4 facilitates the removal of the battery cell from the auxiliary rotating part. Because the battery cell shell expands due to welding heat, an interference fit may occur with the auxiliary rotating part. The battery cell clamping mechanism 4 can fix the battery cell after welding, making it easier to remove the battery cell from the auxiliary rotating part. Taking an externally mounted battery cell drive mechanism 25 as an example, the battery cell can be removed by resetting using the weight of the battery cell fixing mechanism 31 itself. Taking a battery cell drive mechanism 25 directly mounted on the battery cell frame 32 as an example, the battery cell drive mechanism 25 can directly drive the battery cell fixing mechanism 31 to reset, thereby removing the battery cell. The battery cell clamping mechanism 4 includes a clamping driver 41 and a battery cell gripper 42. The clamping driver 41 can be a finger cylinder, which is connected to the battery cell gripper 42 and drives the battery cell gripper 42 to open and close.

[0108] Based on the above design, when acquiring information, after the feeding device 100 delivers the battery cell to the correction station, the information acquisition device 300 acquires information from the current collector on the battery cell. After the information acquisition is completed, the correction rotation driver 13 first drives the correction rotation component 12 to rotate until the welding area corresponds to the area to be welded. Then, the correction drive mechanism 202 drives the correction rotation component 12 to descend until the correction pressure plate 122 contacts and abuts against the current collector. After that, the battery cell clamping mechanism 4 releases the battery cell, and the correction rotation driver 13 drives the correction rotation component 12 to reset, thereby completing the correction of the current collector. After the correction is completed, the battery cell clamping mechanism 4 continues to clamp the battery cell, and the correction rotation component 12 rises to reset. The feeding device 100 delivers the battery cell to the welding station. The auxiliary drive mechanism 22 and the battery cell drive mechanism 25 work together to make the current collector on the battery cell contact and abut against the auxiliary pressure plate in the auxiliary mechanism 23. Then the welding device 500 performs welding. After welding is completed, the auxiliary rotation driver of the auxiliary mechanism 23 drives the auxiliary rotating component to rotate to switch to the next area to be welded and continue welding.

[0109] like Figure 1 As shown, the cell fixing mechanism 31 is preferably designed in multiple ways. For example, the correction mechanism 203 is also designed in multiple ways, corresponding one-to-one with the cell fixing mechanism 31. Similarly, the information acquisition device 300 is also designed in multiple ways, corresponding one-to-one with the cell fixing mechanism 31. This design allows for the correction and welding of multiple current collectors at a time, helping to improve operational efficiency.

[0110] Furthermore, the design of the welding device 500 includes a pre-welding device 501 and a full-welding device 502 arranged sequentially along the feeding path of the feeding device 100; correspondingly, the welding station includes a pre-welding station and a full-welding station, and each of the pre-welding station and the full-welding station is provided with a welding auxiliary device 400.

[0111] The pre-welding device 501 is used to spot weld the two ends of the area to be welded on the manifold at the pre-welding station; the full welding device 502 is used to fully weld the area to be welded on the manifold at the full welding station.

[0112] By pre-spot welding the two ends of the area to be welded, the temperature is not too high due to direct full welding, which may cause the collector plate to warp, resulting in deformation and displacement. Then, the full welding device 502 performs full welding, which can reduce the requirements of the laser process. At the same time, the step-by-step welding can break down the welding time, avoid production line accumulation, and improve production efficiency.

[0113] Furthermore, taking the design of multiple cell fixing mechanisms 31 (correction mechanisms 203) as an example, multiple full-soldering devices 502 can also be designed, consistent with the number of cell fixing mechanisms 31. That is, the number of full-soldering devices 502 is determined according to the number of cell fixing mechanisms 31. Correspondingly, multiple full-soldering stations are designed, each corresponding to one full-soldering device 502.

[0114] The welding auxiliary device 400 located at the pre-welding station has multiple auxiliary mechanisms 23, which correspond one-to-one with the battery cell fixing mechanism 31; while the welding auxiliary device 400 located at the full welding station has one auxiliary mechanism 23 corresponding to one battery cell fixing mechanism 31, that is, the auxiliary mechanisms 23 at multiple full welding stations each correspond to one battery cell fixing mechanism 31.

[0115] Taking the design of two cell fixing mechanisms 31 as an example, there are two corresponding correction mechanisms 203, which correspond one-to-one with the cell fixing mechanism 31; there are two auxiliary mechanisms 23 of the welding auxiliary device 400 located at the pre-welding station, which correspond one-to-one with the cell fixing mechanism 31; there are two full welding devices 502, and there are also two corresponding full welding stations; there is one auxiliary mechanism 23 of the welding auxiliary device 400 located at one of the full welding stations, which corresponds to one of the cell fixing mechanisms 31; there is also one mechanism of the welding auxiliary device 400 located at the other full welding station, which corresponds to the other cell fixing mechanism 31.

[0116] like Figure 8 As shown, the laser generators 51 of both the pre-welding device 501 and the full-welding device 502 are adjustable, allowing the laser generators 51 to weld the current collectors on the cell fixing mechanism 31 respectively. Specifically, both the pre-welding device 501 and the full-welding device 502 include a laser frame 54, a laser generator 51, a first displacement drive mechanism 52, and a second displacement drive mechanism 53. The first displacement drive mechanism 52 is connected to the laser frame 54 and drives the laser frame 54 to move along a first linear direction. The second displacement drive mechanism 53 is connected to the first displacement drive mechanism 52 and drives the first displacement drive mechanism 52 to move along a second linear direction perpendicular to the first linear direction. Taking the first linear direction as the X-axis direction, the second linear direction is also the Y-axis direction. Both the first displacement drive mechanism 52 and the second displacement drive mechanism 53 are single-axis manipulators. The laser frame 54 has an inclined surface; the laser generator 51 is mounted on the inclined surface of the laser frame 54, allowing the laser generator 51 to emit a beam of light downwards at an angle.

[0117] After the pre-welding device 501 finishes welding one battery cell, the laser generator 51 can be moved laterally to the position of the other battery cell to complete the welding of the other battery cell. After each area to be welded is completed, the battery cell rotates and switches to another area to be welded. After the pre-welding is completed, the two battery cells are conveyed to the first full welding station. The full welding device 502 at the first full welding station performs full welding on one of the battery cells, and then continues to convey them to the second full welding station. The full welding device 502 at the second full welding station performs full welding on the other battery cell, thus completing the welding of the two battery cells.

[0118] In addition, this application's equipment also includes a battery cell loading device 700 and a battery cell unloading device 800, which have the same structural composition. Both include a loading robot 61 and a picking clamp. The robot can achieve XY-axis movement. The picking clamp includes a mounting plate 622, a picking rotary motor 621, and several symmetrically arranged picking claws 623. The robot is connected to the picking motor, driving the picking rotary motor 621 to move. The picking rotary motor 621 is connected to the mounting plate 622. The several picking claws 623 are symmetrically arranged on the mounting plate 622 relative to the picking rotary motor 621. The picking rotary motor 621 drives the mounting plate 622 to rotate, thereby switching between different picking claws 623 for loading. The picking claws 623 are used to clamp the battery cells or current collectors. For the loading of current collectors, a separate mechanism can be used, or they can be integrated into this device for loading; there is no limitation.

[0119] like Figure 11 As shown, this application also discloses a manifold welding method, characterized in that, applied to the manifold welding equipment of Embodiment 1 or Embodiment 2 above, the method includes the following steps:

[0120] S1, the information acquisition device obtains the welding area information of the current collector on the battery cell located in the correction station, wherein the battery cell located in the correction station is delivered by the feeding device and can rotate.

[0121] S2, based on the feedback information from the information acquisition device, the correction device drives the battery cell located in the correction station to rotate so that the welding area of ​​the current collector on the battery cell is in a preset distribution state.

[0122] S3, the current collector on the battery cell located in the welding station is pressed by the welding auxiliary device, wherein the battery cell located in the welding station is delivered by the feeding device.

[0123] S4, the current collector on the battery cell located in the welding station is welded by the welding device.

[0124] It should be noted that after the battery cell loading device 700 completes the battery cell loading onto the feeding device 100, the feeding device 100 drives the battery cell through the correction station to achieve current collector correction, then drives the battery cell through the welding station to complete current collector welding, and finally the battery cell is unloaded by the battery cell unloading device 800.

[0125] The welding equipment and welding method for the manifold provided in this application have been described in detail above. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the embodiments of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A manifold welding device, characterized in that, It includes a feeding device (100), an information acquisition device (300), a deviation correction device (200), a welding auxiliary device (400), and a welding device (500). The feeding device (100) is used to convey rotatable battery cells; The information acquisition device (300) is used to acquire information about the welding area of ​​the current collector on the battery cell when the feeding device (100) delivers the battery cell to the correction station; The correction device (200) drives the battery cell to rotate to the welding area of ​​the current collector plate in a preset distribution state based on the feedback information of the information acquisition device (300). The welding auxiliary device (400) is used to press against the collector plate when the feeding device (100) delivers the battery cell to the welding station; The welding device (500) is used to weld the manifold at the welding station; The correction device (200) includes a correction mechanism (203), which is used to drive the battery cell to rotate. The correction mechanism (203) includes a correction fixing base (11), a correction rotating component (12), and a correction rotation driver (13). The correction rotation drive (13) is mounted on the correction fixing base (11) and connected to the correction rotation component (12) to drive the correction rotation component (12) to rotate; The correction rotating component (12) is rotatably mounted on the correction fixing base (11) and is provided with a correction through cavity for the battery cell to extend into; The correction rotating component (12) is provided with a correction clamping structure (120) that can contact and abut against the collector plate. The correction clamping structure (120) is disposed in the correction passage cavity and includes a correction pressure plate (122) and a plurality of correction connecting blocks (121). The plurality of correction connecting blocks (121) are circumferentially distributed in the correction passage cavity and connected to the correction rotating component (12). A correction correspondence area (123) is formed between adjacent correction connection blocks (121) that corresponds to the area to be welded.

2. The manifold welding equipment according to claim 1, characterized in that, The correction device (200) includes a correction frame (201) and a correction drive mechanism (202). The correction drive mechanism (202) is mounted on the correction frame (201) and connected to the correction mechanism (203) to drive the correction mechanism (203) to move so that the correction mechanism (203) contacts the battery cell or the current collector. The correction mechanism (203) is used to drive the battery cell to rotate.

3. The manifold welding equipment according to claim 2, characterized in that, The information acquisition device (300) is located above the correction rotating component (12).

4. The manifold welding equipment according to claim 2, characterized in that, The welding auxiliary device (400) includes a welding auxiliary frame (21), an auxiliary drive mechanism (22), and an auxiliary mechanism (23). The auxiliary drive mechanism (22) is mounted on the welding auxiliary frame (21) and connected to the auxiliary mechanism (23) to drive the auxiliary mechanism (23) to move so that the auxiliary mechanism (23) comes into contact with the collector plate.

5. The manifold welding equipment according to claim 4, characterized in that, The auxiliary mechanism (23) is also used to drive the cell to rotate in order to switch the area to be welded.

6. The manifold welding equipment according to claim 5, characterized in that, The auxiliary mechanism (23) includes an auxiliary fixed base, an auxiliary rotating component, and an auxiliary rotating driver; The auxiliary rotating component is provided with an auxiliary pressing structure that can contact and abut against the collecting plate; The auxiliary rotation driver is mounted on the auxiliary fixed base and connected to the auxiliary rotating component, and is used to drive the auxiliary rotating component to rotate.

7. The manifold welding equipment according to claim 6, characterized in that, The auxiliary rotating component is rotatably mounted on the auxiliary fixed base and is provided with a welding through cavity for the battery cell to extend into; The auxiliary clamping structure is disposed in the welding cavity and includes an auxiliary pressure plate and multiple auxiliary connecting blocks; Multiple auxiliary connecting blocks are circumferentially distributed within the welding cavity and connected to the auxiliary rotating component; A welding avoidance area corresponding to the area to be welded is formed between adjacent auxiliary connecting blocks.

8. The manifold welding equipment according to claim 7, characterized in that, The auxiliary mechanism (23) also includes a dust cover (24); The dust cover (24) is installed above the auxiliary rotating part and has a welding opening that connects to the welding cavity.

9. The manifold welding equipment according to claim 8, characterized in that, The feeding device (100) is equipped with a cell fixing device (600). The cell fixing device (600) includes a cell fixing mechanism (31). The battery cell fixing mechanism (31) is provided with a rotatable accommodating cavity into which the battery cell is inserted.

10. The manifold welding equipment according to claim 9, characterized in that, The cell fixing device (600) also includes a cell frame (32); The cell fixing mechanism (31) is movably mounted on the cell frame (32); The welding auxiliary device (400) also includes a cell drive mechanism (25); The cell driving mechanism (25) is detachably connected to the cell fixing mechanism (31) located at the welding station, and is used to drive the cell fixing mechanism (31) to move, so that the cell located at the correction station can move closer to or further away from the welding auxiliary device (400).

11. The manifold welding equipment according to claim 10, characterized in that, The battery cell fixing device (600) also includes a battery cell clamping mechanism (4). The cell clamping mechanism (4) is mounted on the cell fixing mechanism (31) and is used to clamp and fix the cell.

12. The manifold welding equipment according to claim 11, characterized in that, The battery cell fixing mechanism (31) is multiple; There are multiple correction mechanisms (203), each corresponding to one of the battery cell fixing mechanisms (31); There are multiple information acquisition devices (300), each corresponding to one of the battery cell fixing mechanisms (31).

13. The manifold welding equipment according to claim 12, characterized in that, The welding apparatus (500) includes a pre-welding device (501) and a full-welding device (502) arranged sequentially along the feeding path of the feeding device (100). The welding station includes a pre-welding station and a full-welding station; The pre-welding device (501) is used to spot weld the area to be welded of the manifold at the pre-welding station. The full welding device (502) is used to perform full welding on the area to be welded of the collector plate at the full welding station; The welding auxiliary device (400) is provided on each of the pre-welding station and the full welding station.

14. The manifold welding equipment according to claim 13, characterized in that, There are multiple full-welding devices (502), which are the same number as the battery cell fixing mechanism (31); There are multiple full welding stations, each corresponding to one of the full welding devices (502); The welding auxiliary device (400) located at the pre-welding station has multiple auxiliary mechanisms (23), which correspond one-to-one with the battery cell fixing mechanism (31); Each of the auxiliary mechanisms (23) of the welding auxiliary device (400) located at the full welding station corresponds to one of the battery cell fixing mechanisms (31). The laser generators (51) of both the pre-welding device (501) and the full-welding device (502) are adjustable so that the laser generators (51) can respectively weld the current collectors on the cell fixing mechanism (31).

15. A method for welding manifolds, characterized in that, The method applied to the manifold welding equipment as described in any one of claims 1 to 14 includes the following steps: Information on the welding area of ​​the current collector on the battery cell located in the correction station is obtained by the information acquisition device (300), wherein the battery cell located in the correction station is delivered by the feeding device (100) and is rotatable. Based on the feedback information from the information acquisition device (300), the correction device (200) drives the battery cell located in the correction station to rotate so that the welding area of ​​the current collector on the battery cell is in a preset distribution state. The current collector on the battery cell located in the welding station is pressed by the welding auxiliary device (400), wherein the battery cell located in the welding station is delivered by the feeding device (100); The current collector on the battery cell located in the welding station is welded by the welding device (500).

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