A highly efficient and compact liquid flow battery stacking device and stacking method thereof

Abstract

The present invention relates to the technical field of battery stack stacking, and in particular to an efficient and compact flow battery stack stacking device and a stacking method thereof. The stacking rack is divided into a plurality of running channels by mounting beams, and truss assemblies are provided at both ends of each running channel. A double-layer ring conveying device is arranged in the single battery assembly stacking device, and receives the materials conveyed at both ends of each running channel in sequence according to the stacking sequence of the single batteries, and conveys them to the next station; the loading station is installed at both ends of each running channel; the battery material secondary positioning device is located between the double-layer ring conveying device and the loading assembly; the battery stacking device grabs the single battery assemblies stacked at the discharge end station of the double-layer ring conveying device, and stacks them layer by layer, and after the stacking of the battery stack is completed, it is conveyed to the next process. It takes a short time to stack a battery stack, with a fast cycle, high precision, good consistency, and improved product production yield, effectively replacing manual labor to complete repetitive and tedious battery stacking work.

Description

Technical Field

[0001] The present invention relates to the technical field of battery stacking, and in particular to a highly efficient and compact liquid flow battery stacking device and a stacking method thereof. Background Art

[0002] Liquid flow battery stack (such as Figure 1 The structure of the battery pack 9 is composed of stacked layers of single cell components 9. The general order of stacking single cell components 9 is the first carbon felt 1→anode plate frame 2→bipolar plate 3→cathode plate frame 4→second carbon felt 5→first sealing gasket 6→exchange membrane 7→second sealing gasket 8. A complete battery stack often requires 500-600 pieces to be stacked. At present, most battery stacks are still stacked manually, with low stacking efficiency. It often takes 3-4 people working continuously for nearly 4 hours to complete a battery stack, and the consistency of the stack is relatively poor.

[0003] Prior art: CN 118099503B discloses a production system and a production method for realizing automatic stacking of multi-level battery modules. The system realizes automatic stacking of multi-level battery modules through a robot, a pneumatic calibration table, an assembly platform, a laser tracker, and a PLC controller. However, since the laser tracker is used to precisely calibrate the robot's posture data, and the PLC controller is used to schedule and control the robot assembly, the production rhythm of the entire production line is slow and cannot meet the production line output requirements.

[0004] Prior art, CN114447389B discloses a serial battery stack automatic stacking production line and its process method, in which a visual adjustment table is arranged between a six-axis manipulator and a three-axis overhead rail robot driven by a linear electrical appliance to connect high and low precision, thereby realizing automatic battery stacking.

[0005] The above-mentioned existing technologies use robots and other methods to calibrate the feeding, or set up a visual adjustment platform for high and low precision connection, but there are still problems such as slow production cycle and failure to meet the production line output requirements. At the same time, industrial robots not only have high cost investment, but also have high technical complexity, requiring corresponding technicians to perform special operations, which further increases production costs. Summary of the invention

[0006] In order to solve the problems existing in the prior art in the above-mentioned background technology, an efficient and compact liquid flow battery stack stacking device and a stacking method thereof are provided, which can meet a higher production cycle while ensuring consistency in the stack stacking process.

[0007] The technical solution adopted by the present invention to solve the technical problem is: an efficient and compact liquid flow battery stacking device, comprising:

[0008] A single cell assembly stacking device comprises a stacking frame, wherein the stacking frame is divided into a plurality of running channels by a mounting beam, truss assemblies are provided at both ends of each running channel, and each truss assembly is provided with a gripper assembly arranged according to the stacking sequence of the single cells;

[0009] The double-layer ring conveying device is arranged in the single-cell assembly stacking device, and is vertically arranged between the double-layer ring conveying device and the single-cell assembly stacking device, so as to divide the single-cell assembly stacking device into an upper stacking part and a lower stacking part, and sequentially receives the materials conveyed from the two ends of each running channel in the single-cell assembly stacking device according to the single-cell stacking sequence, and conveys them to the next station;

[0010] A loading assembly, including a plurality of loading stations, which are installed at both ends of each running channel in the single cell assembly stacking device and place materials according to the stacking order of the single cells;

[0011] The battery material secondary positioning device is located between the double-layer ring conveying device and the loading assembly, and is used for secondary accurate positioning of the material;

[0012] The battery stacking device is installed at the discharge end of the double-layer ring conveyor device, grabs the single battery components stacked at the discharge end station of the double-layer ring conveyor device, and stacks them layer by layer. After the stacking of the battery stack is completed, it is conveyed to the next process.

[0013] Furthermore, the double-layer ring conveying device includes lifting conveyors at both ends, and an intermediate double-layer conveying mechanism is provided between the two lifting conveyors. The intermediate double-layer conveying mechanism has conveying stations corresponding to the running channels in the single battery assembly stacking device, and each conveying station is installed with a stacking tooling pallet.

[0014] Furthermore, the stacking tooling pallet comprises a tooling pallet body, wherein the tooling pallet body is divided into an upper working convex plate and a lower working plate, and guide roller assemblies are installed on the four corners of the lower working plate;

[0015] A number of grabbing and avoiding grooves are provided on both side edges in the length direction of the upper working protrusion, a number of liquid flow battery frame positioning blocks are installed on both side edges in the width direction of the upper working protrusion, a pneumatic clamping mechanism cooperating with the liquid flow battery frame positioning blocks is provided on the lower working plate, and a pneumatic circuit docking assembly is provided on any side edge in the width direction of the upper working protrusion.

[0016] Furthermore, the battery material secondary positioning device includes at least one liquid flow plate frame secondary positioning platform, at least one bipolar plate secondary positioning platform, at least one carbon felt secondary positioning platform and at least one sealing gasket secondary positioning platform, and the liquid flow plate frame secondary positioning platform, bipolar plate secondary positioning platform, carbon felt secondary positioning platform and sealing gasket secondary positioning platform are arranged according to the stacking sequence of single cells at both ends of each running channel in the single cell assembly stacking device.

[0017] Furthermore, the secondary positioning platform for the liquid flow plate frame and the secondary positioning platform for the bipolar plate both include a frame, on which a workbench is provided, and a plurality of rectangular holes are provided on the four sides of the workbench. The inner side surface of each rectangular hole serves as a positioning reference, and a plurality of clamping cylinders matching the rectangular holes are installed on the bottom surface of the workbench.

[0018] Furthermore, the carbon felt secondary positioning platform includes a carbon felt frame, a table plate is installed on the carbon felt frame, a through hole is opened on the table plate, a number of limit blocks are installed on the table plate around the through hole, and the size of the placement area surrounded by the number of limit blocks is set according to the size of the carbon felt; a lifting synchronous belt positioning device is provided on the bottom surface of the table plate, and the working end of the lifting synchronous belt positioning device passes through the through hole to lift and displace the carbon felt, and the lifting synchronous belt positioning device is composed of two sets of synchronous belt mechanisms, and the two sets of synchronous belt mechanisms are vertically arranged.

[0019] Furthermore, a vision system cooperating therewith is provided on the sealing pad secondary positioning platform, and the sealing pad secondary positioning platform comprises a sealing pad frame, on which a transparent platform is mounted, and a background light source is mounted on the side of the bottom surface of the transparent platform.

[0020] Furthermore, the battery stacking device includes a stacking bracket and a transmission component, the transmission component is provided with a stacking bracket, the feed end of the stacking bracket is opposite to the discharge end of the double-layer ring conveyor device, the stacking bracket is provided with a truss nine J sliding thereon, and the truss nine J is provided with a single battery assembly end gripper.

[0021] Furthermore, the end gripper of the single cell assembly includes a mounting plate assembly and a connecting flange, and a buffer guide assembly is provided between the mounting plate assembly and the connecting flange;

[0022] An installation area is formed between the installation plate assembly and the connecting flange, and a bottom supporting cylinder assembly and a visual assembly are installed on the plate surface of the installation plate assembly in the installation area, and the visual assembly passes through the installation plate assembly and is arranged downward;

[0023] A bracket for placing a single battery assembly is installed at the extended end of the bottom supporting cylinder assembly, and the bracket is located below the mounting plate assembly, and a space for accommodating the single battery assembly is formed between the mounting plate assembly and the bracket;

[0024] The four corners of the mounting plate assembly are all equipped with clamping cylinder assemblies, and the extended ends of the clamping cylinder assemblies pass through the mounting plate assembly and are arranged downward.

[0025] A highly efficient and compact liquid flow battery stack stacking method, characterized in that: a highly efficient and compact liquid flow battery stack stacking device as described in any one of the above items is adopted, and the specific steps are as follows:

[0026] Step 1: Truss 1 A grabs an anode plate frame from the anode plate frame loading station A1 and places it on the anode plate frame secondary positioning device A2. After secondary positioning, Truss 1 A grabs the accurately positioned anode plate frame again and places it on the stacking tooling tray of the OP2 station;

[0027] Step 2: while truss 1 A grabs the anode plate frame from anode plate frame loading station A1, truss 2 B grabs a first carbon felt from first carbon felt loading station A3 and places it on first carbon felt secondary positioning device A4. After secondary positioning, truss 2 B grabs the precisely positioned first carbon felt again and stacks it on the anode plate frame on the stacking tooling tray at station OP2;

[0028] Afterwards, the double-layer ring conveyor device drives the stacking tooling tray on the OP2 station to step to the OP3 station, and the empty stacking tooling tray at the OP1 station steps to the OP2 station, and the stacking steps 1 and 2 are circulated;

[0029] Step 3: Truss 3C grabs a cathode plate frame from the cathode plate frame loading position A5 and places it on the cathode plate frame secondary positioning device A6. After secondary positioning, Truss 3C grabs the accurately positioned cathode plate frame again and stacks it on the stacking tooling tray at the OP3 station;

[0030] Step 4: While truss 3C grabs a cathode plate frame from cathode plate frame loading station A5, truss 4D grabs a bipolar plate from bipolar plate loading station A7 and puts it on bipolar plate secondary positioning device A8. After secondary positioning, truss 4D grabs the precisely positioned bipolar plate again and stacks it into the cathode plate frame of the stacking tooling tray at station OP3;

[0031] Afterwards, the double-layer ring conveyor device drives the stacking tooling tray at the OP3 station to step to the OP4 station, the stacking tooling tray at the OP2 station to step to the OP3 station, and the empty stacking tooling tray at the OP1 station to step to the OP2 station, and the stacking steps 3, 4, 1, and 2 are cyclically performed;

[0032] Step 5: Truss 5E grabs a second carbon felt from the second carbon felt loading station A9 and places it on the second carbon felt secondary positioning device A10. After secondary positioning, truss 5E grabs the second carbon felt after precise positioning again and stacks it on the bipolar plate on the stacking tooling tray at the OP4 station;

[0033] Step 6: While the truss 5E grabs a second carbon felt from the second carbon felt loading position A9, the truss 6F grabs a first sealing gasket from the first sealing gasket loading position A11 and places it on the first sealing gasket secondary positioning device A12. After secondary positioning, the truss 6F grabs the first sealing gasket after precise positioning again and stacks it on the cathode plate frame of the stacking tooling tray at the OP4 position;

[0034] Afterwards, the double-layer ring conveyor device drives the stacking tooling tray at the OP4 station to step to the OP5 station, the stacking tooling tray at the OP3 station to step to the OP4 station, the stacking tooling tray at the OP2 station to step to the OP3 station, and the empty stacking tooling tray at the OP1 station to step to the OP2 station, and the stacking steps 5, 6, 3, 4, 1, and 2 are cyclically performed;

[0035] Step 7: manually place a membrane on the membrane loading reciprocating table A13 of the reciprocating table, the membrane loading reciprocating table A13 transports the loading plate to the grabbing station A14, the truss 7G grabs the membrane from the grabbing station A14, and stacks it on the first sealing pad of the stacking tooling tray at the OP5 station;

[0036] Step 8: While truss 7G grabs the exchange membrane, truss 8H grabs a second sealing gasket from the second sealing gasket loading station A15 and places it on the second sealing gasket secondary positioning device A16. After secondary positioning, truss 8H grabs the second sealing gasket that has been accurately positioned again and stacks it on the exchange membrane on the stacking tooling tray at the OP5 station;

[0037] Afterwards, the double-layer ring conveyor device drives the stacking tool tray at the OP5 station to step to the OP6 station, the stacking tool tray at the OP4 station to step to the OP5 station, the stacking tool tray at the OP3 station to step to the OP4 station, the stacking tool tray at the OP2 station to step to the OP3 station, and the empty stacking tool tray at the OP1 station to step to the OP2 station, and the stacking steps 7, 8 and 5, 6 and 3, 4 and 1, and 2 are cyclically performed;

[0038] Among them, step 1 to step 8 completes the stacking of single battery components;

[0039] Step 9: Truss 9J grabs the single battery assembly from the OP6 station and stacks it layer by layer at the OP7 station. The stacking tooling tray at the OP6 station circulates to the OP1 station through the lower layer of the double-layer ring conveyor device to start the next cycle until the stack is completed and the cycle ends;

[0040] Finally, the transmission component transports the completed stack to the next process, and so on.

[0041] Beneficial effects of the present invention:

[0042] The single battery assembly stacking device of the present invention adopts a truss rectangular layout, cooperates with a double-layer ring conveying device, a loading assembly, a battery material secondary positioning device and a battery stacking device, and completes the stacking of a battery in a short time, with a fast beat, high precision, good consistency, and improves the product production yield, effectively replacing manual repetitive and tedious battery stacking work;

[0043] The present invention adopts different secondary positioning methods according to the characteristics of different battery materials, which not only improves the consistency accuracy of battery stacking, but also meets the fast-beat production rhythm of the truss; at the same time, because different single batteries have different material combinations, different battery stacks also have different material stacking sequences. On the basis of the rectangular layout of the truss, this secondary positioning method can further meet the compatibility requirements of the production line.

[0044] The present invention replaces the industrial robot, which is convenient for workers to operate, thereby reducing investment costs and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0046] Figure 1 It is a schematic diagram of the structure of an existing flow battery stack;

[0047] Figure 2 It is a schematic diagram of the structure of the present invention;

[0048] Figure 3 It is a structural schematic diagram of a single battery assembly stacking device of the present invention;

[0049] Figure 4 It is a schematic structural diagram of the double-layer ring conveying device of the present invention;

[0050] Figure 5 It is a structural schematic diagram of a stacking tooling pallet of the present invention;

[0051] Figure 6 It is a structural schematic diagram of the liquid flow plate frame secondary positioning platform or the bipolar plate secondary positioning platform of the present invention;

[0052] Figure 7 The present invention Figure 6 A schematic diagram of the structure in another direction;

[0053] Figure 8 It is a structural schematic diagram of the carbon felt secondary positioning platform of the present invention;

[0054] Fig. 9 It is a structural schematic diagram of the sealing gasket secondary positioning platform of the present invention;

[0055] Fig.10 It is a structural schematic diagram of the battery stacking device of the present invention;

[0056] Fig.11 This is a schematic diagram of the structure of the end gripper of a single battery assembly of the present invention;

[0057] Fig.12 It is a structural schematic diagram of the stacking method of the present invention;

[0058] In the figure: 1. First carbon felt, 2. Anode plate frame, 3. Bipolar plate, 4. Cathode plate frame, 5. Second carbon felt, 6. First sealing gasket, 7. Exchange membrane, 8. Second sealing gasket, 9. Single cell assembly,

[0059] 10. Single cell stacking device, 11. Stacking rack, 12. Truss assembly, 13. Gripper assembly,

[0060] 20. Double-layer ring conveyor, 21. Lifting conveyor, 22. Intermediate double-layer conveyor mechanism, 23. Stacking tooling pallet, 231. Tooling pallet body, 232. Guide roller assembly, 233. Flow battery plate frame positioning block, 234. Pneumatic clamping mechanism, 235. Grasping avoidance groove, 236. Pneumatic circuit docking assembly,

[0061] 30. Battery material secondary positioning device, 311. Frame, 312. Workbench, 313. Rectangular hole, 314. Clamping cylinder,

[0062] 331. Carbon felt frame, 332. Table, 333. Limit block, 334. Lifting synchronous belt positioning device,

[0063] 341. Sealing pad frame, 342. Transparent table, 343. Background light source,

[0064] 40. Loading components,

[0065] 50. Battery stacking device, 51. Stacking bracket, 52. Truss nine J, 53. Transmission assembly, 54. Single battery assembly end gripper, 541. Mounting plate assembly, 542. Pressing cylinder assembly, 543. Bottom cylinder assembly, 544. Bracket, 545. Visual assembly, 546. Connecting flange, 547. Buffer guide assembly,

[0066] A1. Anode plate frame loading station, A2. Anode plate frame secondary positioning device, A3. First carbon felt loading station, A4. First carbon felt secondary positioning device, A5. Cathode plate frame loading station, A6. Cathode plate frame secondary positioning device, A7. Bipolar plate loading station, A8. Bipolar plate secondary positioning device, A9. Second carbon felt loading station, A10. Second carbon felt secondary positioning device, A11. First sealing gasket loading station, A12. First sealing gasket secondary positioning device, A13. Exchange membrane loading reciprocating table, A14. Grasping station, A15. Second sealing gasket loading station, A16. Second sealing gasket secondary positioning device. DETAILED DESCRIPTION

[0067] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0068] like Figure 2 A highly efficient and compact flow battery stacking device is shown. Figure 1 The flow battery stack shown in the figure is taken as an example, including

[0069] The single cell assembly stacking device 10 comprises a stacking frame 11, the stacking frame 11 is divided into four running channels by a mounting beam, truss assemblies 12 are provided at both ends of each running channel, and each truss assembly 12 is provided with a gripper assembly 13 arranged according to the stacking sequence of the single cells; wherein the truss assembly 12 is divided into truss 1 A, truss 2 B, truss 3 C, truss 4 D, truss 5 E, truss 6 F, truss 7 G and truss 8 H, and the gripper assembly 13 is selected according to the material to be gripped, and the gripper assembly 13 is equipped with a visual assembly;

[0070] The double-layer ring conveying device 20 is arranged in the single-cell assembly stacking device 10, and is vertically arranged between the double-layer ring conveying device 20 and the single-cell assembly stacking device 10, so as to divide the single-cell assembly stacking device 10 into an upper stacking part and a lower stacking part, and sequentially receives the materials conveyed from the two ends of each running channel in the single-cell assembly stacking device 10 according to the single-cell stacking sequence, and conveys them to the next station; that is, the double-layer ring conveying device 20 has 6 stations;

[0071] The loading assembly 40 includes a plurality of loading stations, which are installed at both ends of each running channel in the single cell assembly stacking device 10, and place materials according to the stacking order of the single cells; that is, the loading assembly 40 has 8 loading stations;

[0072] At least one 30, located between the double-layer ring conveying device 20 and the loading assembly 40, for performing secondary accurate positioning of the material;

[0073] The battery stacking device 50 is used to be installed at the discharge end of the double-layer ring conveyor 20, grab the single battery components 9 stacked at the discharge end station of the double-layer ring conveyor 20, and stack them layer by layer. After the stacking of the battery stack is completed, it is conveyed to the next process.

[0074] like Figures 4-5 As shown, the double-layer ring conveying device 20 includes lifting conveyors 21 at both ends, and an intermediate double-layer conveying mechanism 22 is arranged between the two lifting conveyors 21. The intermediate double-layer conveying mechanism 22 has conveying stations corresponding to the running channels in the single battery assembly stacking device 10, and each conveying station is installed with a stacking tooling pallet 23.

[0075] That is to say, the lifting conveyors 21 at both ends are divided into OP1 station and OP6 station, and the middle double-layer conveying mechanism 22 has four stations, which are OP2 station, OP3 station, OP4 station and OP5 station. The above four stations correspond to the four operating channels of the single battery assembly stacking device 10 respectively.

[0076] like Figure 5 As shown, the stacking tooling tray 23 is an important tooling in the process of stacking single cells, and plays the role of positioning, clamping and transporting single cell components. The stacking tooling tray 23 includes a tooling tray body 231, which is divided into an upper working convex plate and a lower working plate, and guide roller assemblies 232 are installed on the four corners of the lower working plate;

[0077] A plurality of grabbing and avoiding grooves 235 are provided on both side edges in the length direction of the upper working protrusion. The grabbing and avoiding grooves 235 are provided to facilitate the grabbing of the gripper assembly 13. A plurality of liquid flow battery plate frame positioning blocks 233 are installed on both side edges in the width direction of the working protrusion. A pneumatic clamping mechanism 234 cooperating with the liquid flow battery plate frame positioning blocks 233 is provided on the lower working plate. A pneumatic circuit docking assembly 236 is provided on any side edge in the width direction of the upper working protrusion.

[0078] The plate frame of the liquid flow battery includes an anode plate frame 2 and a cathode plate frame 4 .

[0079] The specific working process of stacking tooling tray 23 is as follows:

[0080] First, at the OP2 station, the four pneumatic clamping mechanisms 234 are opened, and a piece of anode plate frame 2 is grabbed by the gripper assembly 13 at the truss A, and the four sides are aligned and placed on the stacking tooling tray 2, and at the same time, the four flow battery plate frame positioning blocks 233 are used to limit the position to prevent the flow battery plate frame from moving; the first carbon felt 1 is stacked in the middle groove of the anode plate frame 2 and will not shift, the air source of the four pneumatic clamping mechanisms 234 is cut off, the anode plate frame 2 is clamped, and the stacking tooling tray 23 moves to the OP3 station;

[0081] Secondly, at the OP3 station, the four pneumatic clamping mechanisms 234 are opened, and the truss three C and the truss four D stack the bipolar plates 3 and the cathode plate frames 4 of the flow battery in sequence. The bipolar plates 3 and the cathode plate frames 4 are also stacked in the center of the four sides, and are limited by the four flow battery plate frame positioning blocks 233 to prevent movement. The air sources of the four pneumatic clamping mechanisms 234 are cut off to clamp the cathode plate frames 4, and the stacking tooling tray 23 moves to the OP4 station;

[0082] Then, at the OP4 station, the four pneumatic clamping mechanisms 234 are opened, and the truss five E and the truss four D stack the second carbon felt 5 and the first sealing gasket 6 in sequence. The second carbon felt 5 and the first sealing gasket 6 are also stacked in the center of the four sides. The air sources of the four pneumatic clamping mechanisms 234 are cut off to clamp the first sealing gasket 6, and the stacking tooling tray 23 moves to the OP5 station;

[0083] Then, at the OP5 station, the four pneumatic clamping mechanisms 234 are opened, and the truss seven G and the truss eight H stack the exchange membrane 7 and the second sealing gasket 8 in sequence. The exchange membrane 7 and the second sealing gasket 8 are also stacked in the center of the four sides. At this point, the stacking of the single cell assembly 9 of the flow battery is completed. The air source of the four pneumatic clamping mechanisms 234 is cut off, the second sealing gasket 8 is clamped, and the stacking tooling tray 23 moves to the OP6 station;

[0084] Finally, at the OP6 station, the four pneumatic clamping mechanisms 234 are opened, and the single cell assembly end gripper 54 grabs the single cell assembly 9 (previously stacked anode plate frame 2, first carbon felt 1, bipolar plate 3, cathode plate frame 4, second carbon felt 5, first sealing gasket 6, exchange membrane 7, second sealing gasket 8) as a whole to stack the battery stack. The stacking tooling tray 23 returns to the OP1 station through the lower layer of the double-layer ring conveyor 20 to wait for the next cycle.

[0085] like Figures 6 to 9 As shown, the battery material secondary positioning device 30 is used for the precise positioning of liquid flow battery materials. Since the materials are loaded in a whole truck with a whole material frame, the position of the materials on the truck and the positioning of the truck are random, with large position errors. Although the truss assembly 12 cooperates with the gripper assembly 13 to grasp the materials with visual guidance positioning, the grasping accuracy is still insufficient, and a secondary positioning table is required to accurately position the materials.

[0086] The battery material secondary positioning device 30 includes at least one liquid flow plate frame secondary positioning platform, at least one bipolar plate secondary positioning platform, at least one carbon felt secondary positioning platform and at least one sealing gasket secondary positioning platform. The liquid flow plate frame secondary positioning platform, bipolar plate secondary positioning platform, carbon felt secondary positioning platform and sealing gasket secondary positioning platform are arranged according to the stacking sequence of single cells at both ends of each running channel in the single cell assembly stacking device 10.

[0087] Therefore, the battery material secondary positioning device 30 is divided into an anode plate frame loading station A1, an anode plate frame secondary positioning device A2, a first carbon felt loading station A3, a first carbon felt secondary positioning device A4, a cathode plate frame loading station A5, a cathode plate frame secondary positioning device A6, a bipolar plate loading station A7, a bipolar plate secondary positioning device A8, a second carbon felt loading station A9, a second carbon felt secondary positioning device A10, a first sealing gasket loading station A11, a first sealing gasket secondary positioning device A12, an exchange membrane loading reciprocating table A13, a grabbing station A14, a second sealing gasket loading station A15 and a second sealing gasket secondary positioning device A16.

[0088] Among them, the exchange membrane loading reciprocating station 13 is a manual loading station, and the others are automatic loading stations.

[0089] like Figures 6-7 As shown, the liquid flow plate frame secondary positioning platform and the bipolar plate secondary positioning platform both include a frame 311, on which a workbench 312 is provided, wherein the workbench 312 is provided with 6 rectangular holes 313 on all four sides of the workbench 312 according to the size of the liquid flow plate frame or the bipolar plate 3, 4 of which are symmetrically arranged in the length direction and 2 of which are symmetrically arranged in the width direction, and the inner side surface of each rectangular hole 313 is used as a positioning reference, and a plurality of clamping cylinders 314 matching the rectangular holes 313 are installed on the bottom surface of the workbench 312.

[0090] During operation, the material will be placed in the middle area of ​​the six rectangular holes 313, and the six clamping cylinders 314 will retract and clamp, and stop when they hit the inner side of the rectangular hole 313, reaching the theoretical positioning position. The material will be pushed to the theoretical position by the six clamping cylinders 314 to complete the positioning.

[0091] like Figure 8 As shown, carbon felt is a slightly soft material, and positioning is a little troublesome. The carbon felt secondary positioning platform includes a carbon felt frame 331, on which a table 332 is installed, and a through hole is provided on the table 332. A plurality of limit blocks 333 are installed on the table 332 around the through hole, and the size of the placement area surrounded by the limit blocks 333 is set according to the size of the carbon felt; a lifting synchronous belt positioning device 334 is provided on the bottom surface of the table 332, and the working end of the lifting synchronous belt positioning device 334 passes through the through hole to lift and displace the carbon felt.

[0092] Among them, the jacking synchronous belt positioning device 334 is composed of two groups of synchronous belt mechanisms, which are arranged vertically between the two groups of synchronous belt mechanisms. That is, the transmission direction of the synchronous belt is arranged at 90°, that is, one group is arranged along the length direction of the positioning platform, and the other group is arranged along the width direction of the positioning platform.

[0093] During operation: the carbon felt is placed in the middle area of ​​the table 332, and the lifting synchronous belt positioning device 334 lifts it up about 2-5mm above the table surface. The two sets of synchronous belts operate in sequence, driving the carbon felt to move in the direction of the limit block 333 until it is blocked by the limit block 333, and the positioning is completed through the 90° right-angle edge of the material, and the lifting synchronous belt positioning device 334 descends to be flush with the table 332.

[0094] like Fig. 9 As shown, the sealing gasket is made of rubber material with a thickness of less than 1 mm. A visual system cooperating with the sealing gasket secondary positioning platform is provided on the sealing gasket secondary positioning platform, which includes a sealing gasket frame 341, on which a transparent table top 342 is installed, and a background light source 343 is installed on the bottom side of the transparent table top 342.

[0095] During operation, the background light source 343 illuminates the sealing gasket to be positioned from the north side, making the boundary lines of the sealing gasket clear in contrast, so that the visual system can take pictures to extract the boundary dimensions of the sealing gasket in a complete and clear manner. The precise coordinates of the sealing gasket are calculated by the visual software, and the positioning is completed and provided to the truss assembly 12 for secondary grasping.

[0096] like Figures 10-11 As shown, the battery stacking device 50 has a battery stack stacking station, namely, the OP7 station. The battery stacking device 50 includes a stacking bracket 51 and a transmission component 53. The transmission component 53 is provided with the stacking bracket 51. The feeding end of the stacking bracket 51 is opposite to the discharging end of the double-layer ring conveying device 20. The stacking bracket 51 is installed with a truss nine J52 sliding thereon, and the truss nine J52 is installed with a single battery assembly end gripper 54.

[0097] like Fig.11 As shown, the single cell assembly end gripper 54 is used to grab the whole cell for stacking after the single cell is stacked. The single cell assembly end gripper 54 includes a mounting plate assembly 541 and a connecting flange 546, and a buffer guide assembly 547 is provided between the mounting plate assembly 541 and the connecting flange 546;

[0098] An installation area is formed between the installation plate assembly 541 and the connecting flange 546. A bottom supporting cylinder assembly 543 and a visual assembly 545 are installed on the plate surface of the installation plate assembly 541 in the installation area. The visual assembly 545 passes through the installation plate assembly 541 and is arranged downward.

[0099] The protruding end of the bottom supporting cylinder assembly 543 is equipped with a bracket 544 for placing the single battery assembly 9. The bracket 544 is located below the mounting plate assembly 541. A space for accommodating the single battery assembly 9 is formed between the mounting plate assembly 541 and the bracket 544.

[0100] A clamping cylinder assembly 542 is installed on each of the four corners of the mounting plate assembly 541 . The protruding end of the clamping cylinder assembly 542 passes through the mounting plate assembly 541 and is arranged downward.

[0101] During operation, the gripper 54 at the end of the single-cell assembly moves to the top of the OP6 station, the bottom-supporting cylinder assembly 543 is opened, the visual assembly takes a picture, and the single-cell assembly 9 is photographed for confirmation and positioning, and the truss nine J52 is guided to make precise position adjustment and finally accurately grasp it. Specifically, the bottom-supporting cylinder assembly 543 is retracted and supported from below the single-cell assembly 9, and the clamping cylinder 542 is pressed down to make the single-cell assembly 9 fit tightly on the bracket 544 of the bottom-supporting cylinder assembly 543 to prevent the single-cell assembly 9 from shifting during the movement. The gripper 54 at the end of the single-cell assembly moves the single-cell assembly 9 to the OP7 station with the single-cell assembly, first presses down slightly, then opens the clamping cylinder assembly 542, and finally opens the bottom-supporting cylinder assembly 543. The gripper 54 at the end of the single-cell assembly is lifted to a certain height, and the visual assembly 545 takes a picture again to check the stacking quality. If the set requirements are met, the next stacking cycle is entered. If the set requirements are not met, the system alarms, and after manual intervention, the next stacking cycle is entered until the stacking task of the entire stack is completed.

[0102] like Fig.12 As shown, a highly efficient and compact method for stacking a flow battery stack is provided, wherein the single battery components 9 are first stacked, and then the battery components 9 are stacked into a stack, and a highly efficient and compact flow battery stack stacking device as described in any one of the above items is used, and the specific steps are as follows:

[0103] Step 1: Truss 1 A grabs an anode plate frame 2 from the anode plate frame loading station A1 and places it on the anode plate frame secondary positioning device A2. After secondary positioning, truss 1 A grabs the accurately positioned anode plate frame 2 again and places it on the stacking tooling tray 23 of the OP2 station;

[0104] Step 2: while truss 1 A grabs the anode plate frame 2 from the anode plate frame loading station A1, truss 2 B grabs a first carbon felt 1 from the first carbon felt loading station A3 and places it on the first carbon felt secondary positioning device A4. After secondary positioning, truss 2 B grabs the precisely positioned first carbon felt 1 again and stacks it in the anode plate frame 2 on the stacking tooling tray 23 at the OP2 station;

[0105] Afterwards, the double-layer ring conveyor 20 drives the stacking tooling tray 23 on the OP2 station to step to the OP3 station, and the empty stacking tooling tray 23 at the OP1 station steps to the OP2 station, and the stacking steps 1 and 2 are circulated;

[0106] Step 3: Truss 3C grabs a cathode plate frame 4 from cathode plate frame loading position A5 and places it on cathode plate frame secondary positioning device A6. After secondary positioning, truss 3C grabs the accurately positioned cathode plate frame 4 again and stacks it on the stacking tooling tray 23 at the OP3 station;

[0107] Step 4: while truss 3 C grabs a cathode plate frame 4 from cathode plate frame loading station A5, truss 4 D grabs a bipolar plate 3 from bipolar plate loading station A7 and places it on bipolar plate secondary positioning device A8. After secondary positioning, truss 4 D grabs the precisely positioned bipolar plate 3 again and stacks it into the cathode plate frame 4 of the stacking tooling tray 23 at station OP3;

[0108] Afterwards, the double-layer ring conveyor device drives the stacking tooling tray 23 at the OP3 station to step to the OP4 station, the stacking tooling tray 23 at the OP2 station to step to the OP3 station, and the empty stacking tooling tray 23 at the OP1 station to step to the OP2 station, and the stacking steps 3, 4, 1, and 2 are circulated;

[0109] Step 5: Truss 5E grabs a second carbon felt 5 from the second carbon felt loading station A9 and places it on the second carbon felt secondary positioning device A10. After secondary positioning, truss 5E grabs the second carbon felt 5 after precise positioning again and stacks it on the bipolar plate 3 on the stacking tooling tray 23 at the OP4 station;

[0110] Step 6: while the truss 5E grabs a second carbon felt 5 from the second carbon felt loading position A9, the truss 6F grabs a first sealing gasket 6 from the first sealing gasket loading position A11 and places it on the first sealing gasket secondary positioning device A12. After the secondary positioning, the truss 6F grabs the first sealing gasket 6 after the precise positioning again and stacks it on the cathode plate frame 4 of the stacking tooling tray 23 at the OP4 position;

[0111] Afterwards, the double-layer ring conveyor 20 drives the stacking tool tray 23 at the OP4 station to step to the OP5 station, the stacking tool tray 23 at the OP3 station to step to the OP4 station, the stacking tool tray 23 at the OP2 station to step to the OP3 station, and the empty stacking tool tray 23 at the OP1 station to step to the OP2 station, and the stacking steps 5, 6, 3, 4, 1, and 2 are circulated;

[0112] Step 7: manually place an exchange membrane 7 on the exchange membrane loading reciprocating table A13 of the reciprocating table, and the exchange membrane loading reciprocating table A13 transports the loading plate to the grabbing station A14, and the truss 7G grabs the exchange membrane 7 from the grabbing station A14 and stacks it on the first sealing pad 6 of the stacking tooling tray 23 at the OP5 station;

[0113] Step 8: While the truss 7G grabs the exchange membrane 7, the truss 8H grabs a second sealing gasket 8 from the second sealing gasket loading station A15 and places it on the second sealing gasket secondary positioning device A16. After the secondary positioning, the truss 8H grabs the second sealing gasket 8 after the precise positioning again and stacks it on the exchange membrane 7 on the stacking tooling tray 23 at the OP5 station;

[0114] Afterwards, the double-layer ring conveying device 20 drives the stacking tool tray 23 at the OP5 station to step to the OP6 station, the stacking tool tray 23 at the OP4 station to step to the OP5 station, the stacking tool tray 23 at the OP3 station to step to the OP4 station, the stacking tool tray 23 at the OP2 station to step to the OP3 station, and the empty stacking tool tray 23 at the OP1 station to step to the OP2 station, and the stacking steps 7, 8 and 5, step 6 and step 3, step 4 and step 1, step 2 are cyclically performed;

[0115] Among them, step 1 to step 8 completes the stacking of the single battery assembly 9;

[0116] Step 9: the truss 9J52 grabs the single cell assembly 9 from the OP6 station and stacks them layer by layer at the OP7 station. The stacking tooling tray 23 at the OP6 station circulates to the OP1 station through the lower layer of the double-layer ring conveyor 20 to start the next cycle until the stack is stacked and the cycle is ended;

[0117] Finally, the transmission component 53 transports the completed stack to the next process, and the process repeats itself.

[0118] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An efficient and compact flow battery stacking device, characterized in that: include A single cell assembly stacking device (10) comprises a stacking frame (11), wherein the stacking frame (11) is divided into a plurality of running channels by mounting beams, truss assemblies (12) are provided at both ends of each running channel, and each truss assembly (12) is provided with a gripper assembly (13) arranged according to the stacking sequence of the single cells; A double-layer ring conveying device (20) is arranged in the single-cell assembly stacking device (10), and is vertically arranged between the double-layer ring conveying device (20) and the single-cell assembly stacking device (10), so as to divide the single-cell assembly stacking device (10) into an upper stacking part and a lower stacking part, and sequentially receives materials conveyed from both ends of each running channel in the single-cell assembly stacking device (10) according to the single-cell stacking sequence, and conveys them to the next workstation; A loading assembly (40) comprising a plurality of loading stations, the loading stations being installed at both ends of each running channel in the single cell assembly stacking device (10) and placing materials according to the stacking sequence of the single cells; A battery material secondary positioning device (30) is located between the double-layer ring conveying device (20) and the loading assembly (40) and is used to perform secondary accurate positioning of the material, comprising at least one liquid flow plate frame secondary positioning platform, at least one bipolar plate secondary positioning platform, at least one carbon felt secondary positioning platform, and at least one sealing gasket secondary positioning platform, wherein the liquid flow plate frame secondary positioning platform, the bipolar plate secondary positioning platform, the carbon felt secondary positioning platform, and the sealing gasket secondary positioning platform are arranged according to the stacking sequence of the single batteries at both ends of each running channel in the single battery assembly stacking device (10); The battery stacking device (50) is installed at the discharge end of the double-layer ring conveying device (20), grabs the single battery components (9) stacked at the discharge end station of the double-layer ring conveying device (20), and stacks them layer by layer. After the stacking of the battery stack is completed, it is transported to the next process; The double-layer ring conveying device (20) comprises lifting conveyors (21) at both ends, an intermediate double-layer conveying mechanism (22) is provided between the two lifting conveyors (21), the intermediate double-layer conveying mechanism (22) has conveying stations corresponding to the running channels in the single battery assembly stacking device (10), and each conveying station is equipped with a stacking tooling tray (23); The stacking tooling pallet (23) comprises a tooling pallet body (231), wherein the tooling pallet body (231) is divided into an upper working convex plate and a lower working plate, and guide roller assemblies (232) are installed on the four corners of the lower working plate; A plurality of grabbing and avoiding grooves (235) are provided at both side edges in the length direction of the upper working protruding plate, a plurality of liquid flow battery plate frame positioning blocks (233) are installed at both side edges in the width direction of the upper working protruding plate, a pneumatic clamping mechanism (234) matched with the liquid flow battery plate frame positioning blocks (233) is provided on the lower working plate, and a pneumatic circuit docking assembly (236) is provided on any side edge in the width direction of the upper working protruding plate; The battery stacking device (50) comprises a stacking support (51) and a transmission assembly (53), wherein the stacking support (51) is mounted on the transmission assembly (53), the feeding end of the stacking support (51) faces the discharging end of the double-layer ring conveying device (20), and a truss frame (52) sliding thereon is mounted on the stacking support (51), and a single battery assembly end gripper (54) is mounted on the truss frame (52).

2. According to claim 1, a highly efficient and compact liquid flow battery stacking device is characterized in that: The liquid flow plate frame secondary positioning platform and the bipolar plate secondary positioning platform both comprise a frame (311), a workbench (312) is provided on the frame (311), a plurality of rectangular holes (313) are provided on the four sides of the workbench (312), the inner side surface of each rectangular hole (313) serves as a positioning reference, and a plurality of clamping cylinders (314) matching the rectangular holes (313) are installed on the bottom surface of the workbench (312).

3. According to claim 1, a highly efficient and compact liquid flow battery stacking device is characterized in that: The carbon felt secondary positioning platform comprises a carbon felt frame (331), a platform (332) is mounted on the carbon felt frame (331), a through hole is formed on the platform (332), a plurality of limit blocks (333) are mounted on the platform (332) around the through hole, and the size of the placement area surrounded by the plurality of limit blocks (333) is set according to the size of the carbon felt; a lifting synchronous belt positioning device (334) is provided on the bottom surface of the platform (332), and a working end of the lifting synchronous belt positioning device (334) passes through the through hole to lift and displace the carbon felt; The lifting synchronous belt positioning device (334) is composed of two sets of synchronous belt mechanisms, and the two sets of synchronous belt mechanisms are vertically arranged.

4. According to claim 1, a highly efficient and compact liquid flow battery stacking device is characterized in that: The sealing pad secondary positioning platform is provided with a visual system coordinated therewith, and comprises a sealing pad frame (341), a transparent platform (342) is mounted on the sealing pad frame (341), and a background light source (343) is mounted on the side edge of the bottom surface of the transparent platform (342).

5. The highly efficient and compact flow battery stacking device according to claim 1, characterized in that: The single cell assembly end gripper (54) comprises a mounting plate assembly (541) and a connecting flange (546); a buffer guide assembly (547) is provided between the mounting plate assembly (541) and the connecting flange (546); An installation area is formed between the installation plate assembly (541) and the connecting flange (546), and a bottom supporting cylinder assembly (543) and a visual assembly (545) are installed on the plate surface of the installation plate assembly (541) in the installation area, and the visual assembly (545) passes through the installation plate assembly (541) and is arranged downward; A bracket (544) for accommodating a single battery assembly (9) is installed at the extended end of the bottom supporting cylinder assembly (543); the bracket (544) is located below the mounting plate assembly (541); a space for accommodating the single battery assembly (9) is formed between the mounting plate assembly (541) and the bracket (544); A pressing cylinder assembly (542) is installed on each of the four corners of the mounting plate assembly (541). The protruding end of the pressing cylinder assembly (542) passes through the mounting plate assembly (541) and is arranged downward.

6. A highly efficient and compact method for stacking a flow battery stack, characterized in that: Using a highly efficient and compact flow battery stacking device as described in any one of claims 1 to 5, the specific steps are as follows: Step 1: Truss 1 A grabs an anode plate frame (2) from the anode plate frame loading station A1 and places it on the anode plate frame secondary positioning device A2. After secondary positioning, truss 1 A grabs the accurately positioned anode plate frame (2) again and places it on the stacking tooling tray (23) of the OP2 station; Step 2: while truss 1 A grabs the anode plate frame (2) from the anode plate frame loading station A1, truss 2 B grabs a first carbon felt (1) from the first carbon felt loading station A3 and places it on the first carbon felt secondary positioning device A4. After secondary positioning, truss 2 B grabs the precisely positioned first carbon felt (1) again and stacks it on the anode plate frame (2) on the stacking tooling tray (23) at the OP2 station; Afterwards, the double-layer ring conveying device (20) drives the stacking tooling tray (23) on the OP2 station to step to the OP3 station, and the empty stacking tooling tray (23) at the OP1 station steps to the OP2 station, and the stacking steps 1 and 2 are cyclically repeated; Step 3: Truss 3C grabs a cathode plate frame (4) from cathode plate frame loading position A5 and places it on the cathode plate frame secondary positioning device A6. After secondary positioning, truss 3C grabs the accurately positioned cathode plate frame (4) again and stacks it on the stacking tooling tray (23) at the OP3 station; Step 4: while truss 3C grabs a cathode plate frame (4) from cathode plate frame loading station A5, truss 4D grabs a bipolar plate (3) from bipolar plate loading station A7 and places it on bipolar plate secondary positioning device A8. After secondary positioning, truss 4D grabs the precisely positioned bipolar plate (3) again and stacks it into the cathode plate frame (4) of the stacking tooling tray (23) at station OP3; Afterwards, the double-layer ring conveying device drives the stacking tool tray (23) at the OP3 station to step to the OP4 station, the stacking tool tray (23) at the OP2 station to step to the OP3 station, and the empty stacking tool tray (23) at the OP1 station to step to the OP2 station, and the stacking steps 3, 4 and steps 1, 2 are cyclically performed; Step 5: Truss 5E grabs a second carbon felt (5) from the second carbon felt loading station A9 and places it on the second carbon felt secondary positioning device A10. After secondary positioning, truss 5E grabs the second carbon felt (5) after accurate positioning again and stacks it on the bipolar plate (3) on the stacking tooling tray (23) at the OP4 station; Step 6: while truss 5E grabs a second carbon felt (5) from the second carbon felt loading position A9, truss 6F grabs a first sealing gasket (6) from the first sealing gasket loading position A11 and places it on the first sealing gasket secondary positioning device A12. After secondary positioning, truss 6F grabs the first sealing gasket (6) after accurate positioning again and stacks it on the cathode plate frame (4) of the stacking tooling tray (23) at the OP4 position; Afterwards, the double-layer ring conveying device (20) drives the stacking tool tray (23) at the OP4 station to step to the OP5 station, the stacking tool tray (23) at the OP3 station to step to the OP4 station, the stacking tool tray (23) at the OP2 station to step to the OP3 station, and the empty stacking tool tray (23) at the OP1 station to step to the OP2 station, and the stacking steps 5, 6, 3, 4, 1, and 2 are cyclically performed; Step 7: manually placing an exchange membrane (7) on the exchange membrane loading reciprocating table A13 of the reciprocating table, the exchange membrane loading reciprocating table A13 transports the loading plate to the grabbing station A14, the truss 7G grabs the exchange membrane (7) from the grabbing station A14, and stacks it on the first sealing pad (6) of the stacking tooling tray (23) at the OP5 station; Step 8: while truss 7G grabs the exchange membrane (7), truss 8H grabs a second sealing gasket (8) from the second sealing gasket loading station A15 and places it on the second sealing gasket secondary positioning device A16. After secondary positioning, truss 8H grabs the second sealing gasket (8) that has been accurately positioned again and stacks it on the exchange membrane (7) on the stacking tooling tray (23) at the OP5 station; Afterwards, the double-layer ring conveying device (20) drives the stacking tool tray (23) at the OP5 station to step to the OP6 station, the stacking tool tray (23) at the OP4 station to step to the OP5 station, the stacking tool tray (23) at the OP3 station to step to the OP4 station, the stacking tool tray (23) at the OP2 station to step to the OP3 station, and the empty stacking tool tray (23) at the OP1 station to step to the OP2 station, and the stacking steps 7, 8 and 5, step 6 and step 3, step 4 and step 1, and step 2 are cyclically stacked; Wherein, step 1 to step 8 completes the stacking of the single cell assembly (9); Step 9: Truss nine J (52) grabs the single battery assembly (9) from the OP6 station and stacks them layer by layer at the OP7 station. The stacking tooling tray (23) at the OP6 station circulates to the OP1 station via the lower layer of the double-layer ring conveying device (20) to start the next cycle until the stack is completed and the cycle ends; Finally, the transmission component (53) transports the completed stack to the next process, and the process repeats itself.

Images