Automatic press-fitting, milling and welding equipment and method for flow battery stack

Abstract

The invention relates to the technical field of assembly of flow battery stacks, in particular to automatic press-fitting, milling and welding equipment for flow battery stacks and a method thereof.The automatic press-fitting, milling and welding equipment comprises a servo press assembly, a lifting conveying assembly, an industrial robot, a milling assembly and a welding tightening assembly, and the lifting conveying assembly penetrates through the servo press assembly; the industrial robot is arranged at the opposite angle of the servo press assembly. The industrial robot comprises a robot body and a first quick-change part arranged at the execution end of the robot body. The milling assemblies are placed on the two sides of the servo press assembly, and each milling assembly comprises a mounting frame and a second quick-change part arranged on the mounting frame; the welding tightening assemblies are detachably installed on the two sides of the servo press assembly. Each welding tightening assembly comprises an installation beam and a third quick-change piece arranged on the installation beam. The first quick-change part is detachably connected with the second quick-change part and the third quick-change part. The device is high in integration level, low in cost and small in occupied area, and the milling and welding quality and the working efficiency are both guaranteed.

Description

Technical Field

[0001] This invention relates to the field of flow battery stack assembly technology, and in particular to an automatic press-fitting, milling and welding equipment and method for flow battery stacks. Background Technology

[0002] The flow battery stack is the core power unit of flow energy storage. Its structure is composed of layers of single battery modules stacked in a cycle. The sealing method and sealing process between the layers of single battery modules are particularly important to prevent internal or external leakage when the flow battery stack is working.

[0003] For flow battery stacks using laser welding, the pressing, milling, and welding processes are quite complex. The typical process steps are as follows: stacking single-cell modules, adding milling fixtures → pressing into the press station → pressing and locking → hoisting to the horizontal machining center station → milling the side of the stack → hoisting to the laser welding station → laser welding → hoisting to the disassembly station → removing the milling fixtures → installing the upper and lower end plate assemblies of the stack and threading the screws → pressing into the press station again → pressing and locking. It can be seen that the above pressing, milling, welding, and screw tightening processes require switching between multiple stations for hoisting, resulting in numerous components, high costs, and a large footprint. Furthermore, the switching between multiple stations not only affects welding quality and work efficiency but also poses safety risks. In addition, the above process has a step that is very unfriendly to the fuel cell stack: disassembling the milling fixture. Since the fuel cell stack has only undergone laser welding on the outer layer at this time, there is a large amount of compression and pressure inside. Disassembling the milling fixture may cause destructive cracking of the welding quality on the side of the fuel cell stack, ultimately causing external leakage of the fuel cell stack, thereby affecting the subsequent normal operation of the fuel cell stack. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic press-fit milling and welding equipment and method for flow battery stacks that has a simple structural design, high integration, low cost, small footprint, and ensures both milling and welding quality and working efficiency.

[0005] The technical solution adopted by this invention to solve its technical problem is: an automatic press-fitting, milling, and welding equipment for flow battery stacks, including a servo press assembly and a lifting and conveying assembly passing through the servo press assembly; and further including:

[0006] An industrial robot is positioned diagonally opposite a servo press assembly. The industrial robot includes a robot body and a first quick-change component positioned at the execution end of the robot body.

[0007] A milling assembly is placed on both sides of the servo press assembly, the milling assembly including a mounting bracket and a second quick-change component disposed on the mounting bracket;

[0008] And a welding and tightening assembly, which is detachably installed on both sides of the servo press assembly, the welding and tightening assembly including a mounting beam and a third quick-change component disposed on the mounting beam;

[0009] The first quick-change component is detachably connected to the second and third quick-change components respectively.

[0010] Furthermore, a first locking seat is provided on the periphery of the servo press assembly, and a first zero-point fixture is provided on the mounting bracket. The first zero-point fixture is detachably connected to the first locking seat.

[0011] Furthermore, a second locking seat is provided on each side of the servo press assembly, and a second zero-point fixture is provided on the mounting beam. The second zero-point fixture is detachably connected to the second locking seat.

[0012] Furthermore, the milling assembly also includes a three-axis motion group and an electric spindle, the electric spindle being connected to the mounting bracket via the three-axis motion group.

[0013] Furthermore, the three-axis motion assembly includes a frame, a slide plate, a bearing, an X-axis drive module, a Y-axis drive module, and a Z-axis drive module. The frame is slidably mounted on the mounting bracket, the slide plate is slidably mounted on the frame, the bearing is slidably mounted on the slide plate, the X-axis drive module is mounted on the mounting bracket and its drive end is connected to the frame; the Y-axis drive module is mounted on the frame and its drive end is connected to the slide plate; the Z-axis drive module is mounted on the slide plate and its drive end is connected to the bearing; and the electric spindle is mounted on the bearing.

[0014] Furthermore, the welding and tightening assembly also includes a welding group, a tightening group, and a vision system, all of which are located at the end of the mounting beam away from the third quick-change component.

[0015] Furthermore, the servo press assembly includes a base, a column, a servo press, a lifting plate, a clamping fixture, and a positioning fixture. The base is positioned below the lifting and conveying assembly, and its corners are connected to the bottom of the column. The servo press is positioned above the lifting and conveying assembly, and its corners are connected to the top of the column. The lifting plate is positioned between the servo press and the lifting and conveying assembly, and its top is connected to the drive end of the servo press. The clamping fixture is positioned at the bottom of the lifting plate, and the positioning fixture is positioned at the top of the base.

[0016] Furthermore, the lifting and conveying assembly includes a base plate, a lifting group, and a conveyor line. The conveyor line is positioned above the base plate and connected to the base plate via the lifting group. An opening is provided in the middle of the conveyor line to avoid the positioning fixture.

[0017] Furthermore, it also includes a debris collection assembly, which is respectively disposed on both sides of the servo press assembly.

[0018] An automated press-fit milling and welding method for flow battery stacks, applicable to the aforementioned automated press-fit milling and welding equipment for flow battery stacks, includes the following steps:

[0019] S1. Battery stack pressing: The lifting and conveying assembly transports the battery stack to the working position of the servo press assembly. The lifting and conveying assembly descends until the battery stack lands on the positioning fixture of the servo press assembly. The pressing fixture in the servo press assembly presses down to press the battery stack until the pressure value reaches the set value.

[0020] S2. Electrolytic Cell Milling: The industrial robot automatically replaces the milling component at the execution end. The industrial robot drives the milling component to move to both sides of the servo press component and fixes it on the servo press component. The milling component performs milling processing on the electrolytic cell from both symmetrical sides until the milling processing of all four sides of the electrolytic cell is completed.

[0021] S3. Fuel cell stack welding: The industrial robot automatically replaces the welding and tightening components at the execution end. The industrial robot drives the welding and tightening components to move to both sides of the servo press components and performs welding processing on the fuel cell stack from both symmetrical sides until the welding processing on all four sides of the fuel cell stack is completed.

[0022] S4. Threading the screw into the fuel cell stack: The industrial robot that has completed the fuel cell stack welding returns to its initial position and performs the threading operation on the fuel cell stack.

[0023] S5. Screw tightening: The industrial robot drives the welding tightening assembly to move again to both sides of the servo press assembly to perform screw tightening operation on the fuel cell stack.

[0024] The beneficial effects of this invention are:

[0025] (1) The present invention integrates the milling component and the welding tightening component into a single station of the servo press component. The execution end of the industrial robot can be detachably connected with the first quick-change component, the second quick-change component and the third quick-change component to realize the switching of the milling component and the welding tightening component of the execution end of the industrial robot. Thus, the pressing, side milling, laser welding and screw locking processes of the fuel cell stack can be completed in one station without the need for switching and hoisting between multiple stations. The integration is high, the cost is low, the floor space is greatly reduced, the work efficiency is significantly improved, and the unfriendly process of disassembling the milling fixture is avoided. The pressing is completed in one go, and the welding quality is reliably guaranteed.

[0026] (2) By using the first zero-point tooling and the first locking seat, the present invention locks the milling component on the servo press component during the milling operation. Compared with the milling component relying solely on robot control, this increases the rigidity of the operation, improves stability, and makes the milling quality more reliable.

[0027] (3) The present invention sets the welding group, tightening group and vision system on the mounting beam, which further improves the integration of the equipment and makes the connection between the welding process and the screw tightening process more timely and smooth, thereby further improving work efficiency and welding quality. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a schematic diagram of the device in this invention;

[0030] Figure 2 This is a top view of the device in this invention;

[0031] Figure 3 This is a schematic diagram of the servo press assembly in this invention;

[0032] Figure 4 This is a schematic diagram of the lifting and conveying assembly in this invention;

[0033] Figure 5 This is a schematic diagram of the industrial robot in this invention;

[0034] Figure 6 This is a schematic diagram of the milling component in this invention;

[0035] Figure 7 This is a schematic diagram of the welding and tightening assembly in this invention;

[0036] Figure 8 This is a flowchart of the method in this invention.

[0037] In the diagram: 100, Servo press assembly; 110, Base; 120, Column; 130, Servo press; 140, Lifting plate; 150, Clamping fixture; 160, Positioning fixture; 161, Inductive switch; 162, Positioning pin; 200, Lifting and conveying assembly; 210, Base plate; 220, Lifting group; 221, Screw elevator; 222, Drive motor; 223, Coupling; 224, Synchronous shaft; 225, Right-angle gearbox; 230, Conveyor line; 231, Opening; 300, Industrial robot; 310, Robot body; 320, First quick-change component; 400, Milling assembly; 410, Mounting bracket; 420. Second quick-change component; 430. Three-axis motion assembly; 431. Frame; 432. Slide plate; 433. Shaft seat; 434. X-axis drive module; 435. Y-axis drive module; 436. Z-axis drive module; 440. Electric spindle; 500. Welding and tightening assembly; 510. Mounting beam; 520. Third quick-change component; 530. Welding assembly; 531. Telescopic component; 532. Welding head; 540. Tightening assembly; 550. Vision system; 600. First locking seat; 700. First zero-point tooling; 800. Second locking seat; 900. Second zero-point tooling; 1000. Debris collection assembly; 1100. Step. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0039] Example 1

[0040] like Figure 1 , Figure 2 , Figures 5-7 As shown, an automated press-fit milling and welding equipment for flow battery stacks includes a servo press assembly 100, a lifting and conveying assembly 200, an industrial robot 300, a milling assembly 400, and a welding and tightening assembly 500. The lifting and conveying assembly 200 passes through the servo press assembly 100. The industrial robot 300 is positioned diagonally opposite the servo press assembly 100 and includes a robot body 310 and a first quick-change component 320 disposed at the execution end of the robot body 310. The milling assembly 400 is placed on both sides of the servo press assembly 100 and includes a mounting frame 410 and a second quick-change component 420 disposed on the mounting frame 410. The welding and tightening assembly 500 is detachably installed on both sides of the servo press assembly 100 and includes a mounting beam 510 and a third quick-change component 520 disposed on the mounting beam 510. The first quick-change component 320 is detachably connected to the second quick-change component 420 and the third quick-change component 520, respectively.

[0041] Specifically, the industrial robot 300 is a six-axis industrial robot; two sets of the industrial robot 300, milling assembly 400 and welding and tightening assembly 500 are set up; the entire equipment is equipped with a safety protection system and is controlled by a control system.

[0042] The milling assembly 400 and the welding and tightening assembly 500 are integrated into a single station of the servo press assembly 100. The execution end of the industrial robot 300 can be detachably connected with the first quick-change component 320, the second quick-change component 420, and the third quick-change component 520 to achieve the switching between the milling assembly 400 and the welding and tightening assembly 500 at the execution end of the industrial robot 300. Thus, the pressing, side milling, laser welding, and screw threading and tightening processes of the fuel cell stack can be completed in one station without the need for switching and hoisting between multiple stations. This results in high integration, low cost, significantly reduced floor space, and significantly improved work efficiency. It also avoids the unfriendly process of disassembling the milling fixture, and the pressing is completed in one go, ensuring reliable welding quality.

[0043] like Figures 1-3 As shown, the servo press assembly 100 includes a base 110, a column 120, a servo press 130, a lifting plate 140, a clamping fixture 150, and a positioning fixture 160. The base 110 is located below the lifting and conveying assembly 200, and its corner is connected to the bottom end of the column 120. The servo press 130 is located above the lifting and conveying assembly 200, and its corner is connected to the top end of the column 120. The lifting plate 140 is located between the servo press 130 and the lifting and conveying assembly 200, and its top center is connected to the drive end of the servo press 130. The clamping fixture 150 is located at the bottom center of the lifting plate 140, and the positioning fixture 160 is located at the top center of the base 110.

[0044] Specifically, four columns 120 are provided, located at the four corners of the base 110; the positioning fixture 160 is equipped with an induction switch 161 and a positioning pin 162, which are used for sensing and positioning the stack, respectively; the clamping fixture 150 and the positioning fixture 160 are both existing technologies.

[0045] In some embodiments, the column 120 passes through the lifting plate 140 and slides with the lifting plate 140 to guide the lifting plate 140 during its up-and-down movement and ensure stability.

[0046] like Figure 2 and Figure 4 As shown, the lifting and conveying assembly 200 includes a base plate 210, a lifting group 220 and a conveying line 230. The conveying line 230 is located above the base plate 210 and is connected to the base plate 210 through the lifting group 220. An opening 231 is provided in the middle of the conveying line 230 to avoid the positioning fixture 160.

[0047] Specifically, two base plates 210 are provided, which are respectively arranged at both ends of the conveyor line 230; the conveyor line 230 adopts an automatic conveyor roller line, with conveyor rollers arranged on both sides, which is existing technology and will not be described in detail here.

[0048] like Figure 4 As shown, the lifting assembly 220 includes a screw hoist 221, a drive motor 222, a coupling 223, a synchronous shaft 224, and a right-angle gearbox 225. The screw hoist 221 is located at both ends of the base plate 210. The drive end of the screw hoist 221 is connected to the conveyor line 230. The drive motor 222 is located in the middle of one of the base plates 210. The output end of the drive motor 222 is connected to the input end of the screw hoist 221 in sequence through the coupling 223, the synchronous shaft 224, and the right-angle gearbox 225.

[0049] The drive motor 222 drives four screw elevators 221 to lift synchronously, achieving stable lifting of the conveyor line 230.

[0050] like Figure 2 and Figure 6 As shown, the milling assembly 400 also includes a three-axis motion group 430 and an electric spindle 440, with the electric spindle 440 connected to the mounting bracket 410 via the three-axis motion group 430. The three-axis motion group 430 drives the electric spindle 440 in three-dimensional motion, achieving milling of the side of the fuel cell stack without dead angles.

[0051] like Figure 6 As shown, the three-axis motion assembly 430 includes a frame 431, a slide plate 432, a bearing 433, an X-axis drive module 434, a Y-axis drive module 435, and a Z-axis drive module 436. The frame 431 is slidably mounted on the mounting bracket 410, the slide plate 432 is slidably mounted on the frame 431, and the bearing 433 is slidably mounted on the slide plate 432. The X-axis drive module 434 is mounted on the mounting bracket 410, and its drive end is connected to the frame 431 to drive the frame 431 to perform X-axis motion. The Y-axis drive module 435 is mounted on the frame 431, and its drive end is connected to the slide plate 432 to drive the slide plate 432 to perform Y-axis motion. The Z-axis drive module 436 is mounted on the slide plate 432, and its drive end is connected to the bearing 433 to drive the bearing 433 to perform Z-axis motion. The electric spindle 440 is mounted on the bearing 433.

[0052] Specifically, the frame 431 is located on the side of the mounting bracket 410 away from the second quick-change component 420. The frame 431 is preferably a flat and elongated "U"-shaped frame structure, and the bearing seat 433 passes through the frame 431. Two slide plates 432 are provided, respectively located on both sides of the frame 431 along the height direction. The middle of each slide plate 432 is provided with a through hole for the bearing seat 433 to pass through. Two sets of X-axis drive modules 434 are provided, and the drive ends of the two sets of X-axis drive modules 434 are respectively connected to the two ends of the frame 431. The X-axis drive module 434 is preferably a ball screw and servo motor drive module, but is not limited to this structure, as long as it can drive the frame 431 to perform stable X-axis movement. The Y-axis drive module 435 is also preferably a ball screw and servo motor drive module, and is also not limited to this structure. The Z-axis drive module 436 is preferably a servo electric cylinder, but is not limited to this structure.

[0053] like Figure 1 and Figure 7 As shown, the welding and tightening assembly 500 also includes a welding group 530, a tightening group 540, and a vision system 550. The welding group 530, tightening group 540, and vision system 550 are all located at the end of the mounting beam 510 furthest from the third quick-change component 520. Specifically, the tightening group 540 and vision system 550 are existing technologies and will not be described in detail here.

[0054] The welding assembly 530, tightening assembly 540, and vision system 550 are all mounted on the mounting beam 510, which further enhances the integration of the equipment and makes the connection between the welding process and the screw tightening process more timely and smooth, thereby further improving work efficiency and welding quality.

[0055] During operation, the vision system 550 takes a picture of the position of the fuel cell stack screw and sends the coordinate position of the fuel cell stack screw to the industrial robot 300. The industrial robot 300 controls the tightening assembly 540 to complete the screw tightening operation.

[0056] like Figure 7 As shown, the welding assembly 530 includes a telescopic member 531 and a welding head 532. The telescopic member 531 is mounted on the mounting beam 510, and the welding head 532 is mounted on the drive end of the telescopic member 531.

[0057] Specifically, welding assembly 530 is controlled by a laser welding host; telescopic component 531 uses a telescopic cylinder.

[0058] like Figure 3 and Figure 7 As shown, the servo press assembly 100 is provided with a second locking seat 800 on both sides, and a second zero-point fixture 900 is provided on the mounting beam 510. The second zero-point fixture 900 is detachably connected to the second locking seat 800.

[0059] Specifically, the second locking seat 800 is connected to the servo press 130 via a bracket; the second zero-point tooling 900 is located on the side of the mounting beam 510 away from the third quick-change part 520.

[0060] The detachable connection between the second zero-point tooling 900 and the second locking seat 800 allows the welding tightening assembly 500 to be temporarily stored on the servo press assembly 100 during operation, further improving integration and reducing floor space.

[0061] In some embodiments, it also includes a debris collection assembly 1000 and a step 1100, such as Figure 2 and Figure 3 As shown, the debris collection assembly 1000 and the platform 1100 are respectively disposed on both sides of the servo press assembly 100, and the debris collection assembly 1000 is integrated into the platform 1100. Specifically, the debris collection assembly 1000 is prior art.

[0062] The chip collection component 1000 is designed to collect and remove chips generated during milling operations, thereby ensuring a clean working environment.

[0063] Example 2

[0064] To increase the working rigidity of the milling assembly 400 during the milling process and improve its stability and reliability, this embodiment is optimized based on Embodiment 1. For example... Figure 3 and Figure 6 As shown, in this embodiment, the servo press assembly 100 is provided with a first locking seat 600 on its periphery, and a first zero-point fixture 700 is provided on the mounting bracket 410. The first zero-point fixture 700 is detachably connected to the first locking seat 600.

[0065] Specifically, the first locking seat 600 is set on the column 120, and two first locking seats 600 are set on each column 120; the first zero point fixture 700 is set on the side of the mounting bracket 410 away from the second quick change part 420, and is located at the four corners respectively.

[0066] During the milling operation, the industrial robot 300 picks up the milling component 400 and, through the cooperation of the first zero-point tooling 700 and the first locking seat 600, firmly locks and fixes the milling component 400 onto the column 120.

[0067] It should be noted that the first quick-release component 320, the second quick-release component 420 and the third quick-release component 520, the first locking seat 600 and the first zero-point tooling 700, the second locking seat 800 and the second zero-point tooling 900 in this application are all quick-release components in the prior art, and will not be described in detail here.

[0068] Example 3

[0069] like Figure 8 As shown, an automated press-fit milling and welding method for flow battery stacks, applicable to the automated press-fit milling and welding equipment for flow battery stacks in Embodiment 2, includes the following steps:

[0070] S1. Battery stack pressing: The lifting and conveying assembly 200 transports the battery stack to the working position of the servo press assembly 100. The lifting and conveying assembly 200 descends until the battery stack lands on the positioning fixture 160 of the servo press assembly 100. The pressing fixture 150 in the servo press assembly 100 presses down to press the battery stack until the pressure value reaches the set value.

[0071] S2. Electrolytic Cell Milling: The industrial robot 300 automatically replaces the milling component 400 at the execution end. The industrial robot 300 drives the milling component 400 to move to both sides of the servo press component 100 and fixes it on the servo press component 100. The milling component 400 performs milling processing on the electrolytic cell stack from both symmetrical sides until the milling processing of the four sides of the electrolytic cell stack is completed.

[0072] S3. Electrolytic capacitor stack welding: The industrial robot 300 automatically replaces the welding and tightening assembly 500 at the execution end. The industrial robot 300 drives the welding and tightening assembly 500 to move to both sides of the servo press assembly 100, and performs welding processing on the electrolytic capacitor stack from both symmetrical sides until the welding processing on all four sides of the electrolytic capacitor stack is completed.

[0073] S4. Inserting screws into the fuel cell stack: The industrial robot 300, which has completed the welding of the fuel cell stack, returns to its initial position and performs the screw insertion operation on the fuel cell stack.

[0074] S5. Screw tightening: The industrial robot 300 drives the welding tightening assembly 500 to move again to both sides of the servo press assembly 100 to perform screw tightening operation on the fuel cell stack.

[0075] The specific work process is as follows:

[0076] The lifting and conveying assembly 200 transports the fuel cell stack to the working position of the servo press assembly 100. The conveyor line 230 descends until the fuel cell stack lands on the positioning fixture 160. The servo press assembly 100 starts, and the lifting plate 140 drives the pressing fixture 150 to press the fuel cell stack according to the set program until the pressure value reaches the set value. At this time, the servo press assembly 100 automatically switches from servo pressure control mode to servo position control mode until the milling, welding, and screw tightening operations on the sides of the fuel cell stack are completed. The industrial robot 300 automatically replaces the milling assembly 400 with the first quick-change part 320 and the second quick-change part 420. The industrial robot 300 drives the milling assembly 400 to move to both sides of the servo press assembly 100. The milling assembly 400 is fixed to the column 120 of the servo press assembly 100 by the first zero-point fixture 700 and the first locking seat 600. The milling assembly 400 performs milling processing on the fuel cell stack from both symmetrical sides until the milling processing on all four sides of the fuel cell stack is completed. The first zero-point fixture 700 disengages from the first locking seat 600, and the industrial robot 300 places the milling assembly 400 on the tool rack. The industrial robot 300's actuator automatically replaces the welding and tightening assembly 500 with the first quick-change piece 320 and the third quick-change piece 520. The second zero-point fixture 900 disengages from the second locking seat 800, and the industrial robot 300 moves the welding and tightening assembly 500 to both sides of the servo press assembly 100, performing welding processing on the fuel cell stack from both symmetrical sides until the welding processing on all four sides of the fuel cell stack is completed. After completing the fuel cell stack welding, the industrial robot 300 returns to its initial position and remains stationary until the position lock signal is manually released. A manual operator enters the work area to perform the screw threading operation, exits the work area after completing the screw threading operation, and releases the position lock of the industrial robot 300. The industrial robot 300 then moves the welding and tightening assembly 500 again to both sides of the servo press assembly 100, performing screw tightening operations on the fuel cell stack according to the set program until completion.

[0077] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An automated press-fitting, milling, and welding equipment for flow battery stacks, comprising a servo press assembly (100) and a lifting and conveying assembly (200) passing through the servo press assembly (100); characterized in that, Also includes: An industrial robot (300) is positioned diagonally opposite the servo press assembly (100). The industrial robot (300) includes a robot body (310) and a first quick-change component (320) disposed at the execution end of the robot body (310). A milling assembly (400) is placed on both sides of a servo press assembly (100), the milling assembly (400) including a mounting bracket (410) and a second quick-change piece (420) disposed on the mounting bracket (410). And a welding tightening assembly (500), which is detachably mounted on both sides of the servo press assembly (100), the welding tightening assembly (500) including a mounting beam (510) and a third quick-change piece (520) disposed on the mounting beam (510). The first quick-change component (320) is detachably connected to the second quick-change component (420) and the third quick-change component (520).

2. The automatic press-fitting, milling, and welding equipment for flow battery stacks according to claim 1, characterized in that, The servo press assembly (100) is provided with a first locking seat (600) on its periphery, and a first zero-point fixture (700) is provided on the mounting bracket (410). The first zero-point fixture (700) is detachably connected to the first locking seat (600).

3. The automatic press-fitting, milling, and welding equipment for flow battery stacks according to claim 1, characterized in that, The servo press assembly (100) is provided with a second locking seat (800) on both sides, and a second zero-point fixture (900) is provided on the mounting beam (510). The second zero-point fixture (900) is detachably connected to the second locking seat (800).

4. The automatic press-fitting, milling, and welding equipment for flow battery stacks according to claim 1, characterized in that, The milling assembly (400) also includes a three-axis motion group (430) and an electric spindle (440), the electric spindle (440) being connected to the mounting bracket (410) via the three-axis motion group (430).

5. The automatic press-fitting, milling, and welding equipment for flow battery stacks according to claim 4, characterized in that, The three-axis motion assembly (430) includes a frame (431), a slide plate (432), a bearing seat (433), an X-axis drive module (434), a Y-axis drive module (435), and a Z-axis drive module (436). The frame (431) is slidably mounted on the mounting bracket (410), the slide plate (432) is slidably mounted on the frame (431), the bearing seat (433) is slidably mounted on the slide plate (432), the X-axis drive module (434) is mounted on the mounting bracket (410), and its drive end is connected to the frame (431); the Y-axis drive module (435) is mounted on the frame (431), and its drive end is connected to the slide plate (432); the Z-axis drive module (436) is mounted on the slide plate (432), and its drive end is connected to the bearing seat (433); the electric spindle (440) is mounted on the bearing seat (433).

6. The automatic press-fitting, milling, and welding equipment for flow battery stacks according to claim 1, characterized in that, The welding and tightening assembly (500) further includes a welding assembly (530), a tightening assembly (540), and a vision system (550), all of which are located at the end of the mounting beam (510) away from the third quick-change component (520).

7. The automatic press-fitting, milling, and welding equipment for flow battery stacks according to claim 1, characterized in that, The servo press assembly (100) includes a base (110), a column (120), a servo press (130), a lifting plate (140), a clamping fixture (150), and a positioning fixture (160). The base (110) is located below the lifting conveyor assembly (200), and its corner is connected to the bottom end of the column (120). The servo press (130) is located above the lifting conveyor assembly (200), and its corner is connected to the top end of the column (120). The lifting plate (140) is located between the servo press (130) and the lifting conveyor assembly (200), and its top end is connected to the drive end of the servo press (130). The clamping fixture (150) is located at the bottom end of the lifting plate (140), and the positioning fixture (160) is located at the top end of the base (110).

8. The automatic press-fitting, milling, and welding equipment for flow battery stacks according to claim 7, characterized in that, The lifting and conveying assembly (200) includes a base plate (210), a lifting group (220), and a conveying line (230). The conveying line (230) is located above the base plate (210) and is connected to the base plate (210) through the lifting group (220). An opening (231) is provided in the middle of the conveying line (230) to avoid the positioning fixture (160).

9. The automatic press-fitting, milling, and welding equipment for flow battery stacks according to claim 1, characterized in that, It also includes a debris collection assembly (1000), which is respectively disposed on both sides of the servo press assembly (100).

10. An automated press-fit milling and welding method for flow battery stacks, applicable to the automated press-fit milling and welding equipment for flow battery stacks as described in any one of claims 2-9, characterized in that, Includes the following steps: S1. Battery stack pressing: The lifting and conveying assembly (200) transports the battery stack to the working position of the servo press assembly (100). The lifting and conveying assembly (200) descends until the battery stack lands on the positioning fixture (160) of the servo press assembly (100). The pressing fixture (150) in the servo press assembly (100) presses down to press the battery stack until the pressure value reaches the set value. S2. Electrolytic capacitor stack milling: The industrial robot (300) automatically replaces the milling component (400) at the execution end. The industrial robot (300) drives the milling component (400) to move to both sides of the servo press component (100) and fixes it on the servo press component (100). The milling component (400) performs milling processing on the electrolytic capacitor stack from both symmetrical sides until the milling processing on all four sides of the electrolytic capacitor stack is completed. S3. Battery stack welding: The industrial robot (300) automatically replaces the welding tightening assembly (500) at the execution end. The industrial robot (300) drives the welding tightening assembly (500) to move to both sides of the servo press assembly (100) and performs welding processing on the battery stack from both symmetrical sides until the welding processing on all four sides of the battery stack is completed. S4. Threading the screw into the fuel cell stack: The industrial robot (300) that has completed the welding of the fuel cell stack returns to its initial position and performs the threading operation on the fuel cell stack; S5. Screw tightening: The industrial robot (300) drives the welding tightening assembly (500) to move again to both sides of the servo press assembly (100) to perform screw tightening operation on the fuel cell stack.

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