Flow battery assembly line and assembly method

Abstract

The invention provides a flow battery assembly line and an assembly method thereof, and the flow battery assembly line comprises a logistics line, a bottom installation unit, a first stacking unit, a second stacking unit, a screw rod installation unit, a servo pressing unit, a galvanic pile height inspection unit, a galvanic pile overturning unit, a finished product discharging unit and a production line safety fence, a bottom mounting unit, a first stacking unit, a second stacking unit, a screw mounting unit, a servo pressing unit, an electric pile height checking unit, an electric pile overturning unit and a finished product discharging unit are arranged on one side of the logistics line, and production line safety fences are arranged around the logistics line and all the units. Compared with the prior art, the assembly line type high-automation flow battery assembly line has the beneficial effects that unmanned mechanical assembly is realized in all the other assembly and transportation steps except for installation of bottom fasteners and maintenance and adjustment of unqualified products, and two groups of stacking units are arranged in a long-time stacking assembly link, so that the assembly efficiency is high.

Description

Technical Field

[0001] The invention relates to a battery assembly line and an assembly method, and in particular to a liquid flow battery assembly line and an assembly method. Background Art

[0002] Liquid flow battery is a new type of electrochemical battery. Due to its flexible layout, long service life, large-scale energy storage and other advantages, it has good application prospects. However, the current liquid flow battery assembly line also has disadvantages such as large battery size, complex structure, troublesome assembly, and low assembly efficiency. It is very necessary to improve the assembly efficiency of liquid flow batteries and ensure the assembly quality. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problems existing in the current production and assembly of large-scale liquid flow batteries, and to provide a liquid flow battery assembly line and assembly method.

[0004] The present invention is realized through the following technical scheme: a liquid flow battery assembly line, comprising a logistics line, a bottom installation unit, a first stacking unit, a second stacking unit, a screw installation unit, a servo clamping unit, a battery stack height inspection unit, a battery stack overturning unit, a finished product unloading unit, and a production line safety fence, wherein the logistics line is installed and fixed on the ground, and one side of the logistics line is respectively provided with a bottom installation unit, a first stacking unit, a second stacking unit, a screw installation unit, a servo clamping unit, a battery stack height inspection unit, a battery stack overturning unit, and a finished product unloading unit from the logistics line inlet end to the logistics line outlet end, and a production line safety fence is provided around the logistics line and each unit; The logistics line is a transport unit that carries the flow battery to each unit for assembly; The bottom mounting unit is a mounting unit for mounting the bottom end plate and the insulating bottom plate of the flow battery; The first stacking unit is an installation unit for stacking the flow battery main body plate, the insulating top plate and the top end plate on the insulating bottom plate, the second stacking unit is the same as the first stacking unit, and the first stacking unit and the second stacking unit are a flow battery assembly line for stacking two groups of flow batteries at the same time; The screw installation unit is an installation unit for inserting a limiting screw into the stacked flow battery; The servo pressing unit is an installation unit for the flow battery structure and the fastening screws which are completed by pressing and stacking with a servo press; The battery stack height inspection unit is a detection unit that detects whether the height and parallelism of the compressed flow battery are qualified through a visual X / Y mobile module; The stack overturning unit is a transport unit that uses a flipping trolley to assist the detection of qualified liquid flow batteries lying flat on their side; The finished product unloading unit is a transport unit that transports the sideways liquid flow battery away from the logistics line and replenishes empty pallets for the battery stack overturning unit; The production line safety fence is a safety protection structure that isolates the production line and non-operating personnel.

[0005] Furthermore, the logistics line includes a ground rail line, a No. 1 walking trolley, a No. 2 walking clamping trolley, and a No. 3 walking trolley. The ground rail line is installed and fixed on the ground of the production line. The No. 1 walking trolley, the No. 2 walking clamping trolley and the No. 3 walking trolley are provided on the ground rail line. The No. 1 walking trolley is movably connected to the ground rail line between the bottom mounting unit and the second stacking unit, the No. 2 walking clamping trolley is movably connected to the ground rail line between the first stacking unit and the servo clamping unit, and the No. 3 walking trolley is movably connected to the ground rail line between the servo clamping unit and the battery stack overturning unit.

[0006] Further, the bottom installation unit includes a six-axis robot, a robot control cabinet, a power distribution cabinet, a bottom end plate bearing platform, an insulating bottom plate bearing platform, a visual correction device, and a robot fixture. The six-axis robot is installed and fixed on the ground of the bottom installation unit. The six-axis robot is surrounded by a robot control cabinet, a power distribution cabinet, a bottom end plate bearing platform, an insulating bottom plate bearing platform, and a visual correction device. The robot control cabinet is respectively connected to the six-axis robot and the visual correction device by signal. The power distribution cabinet is respectively electrically connected to the six-axis robot, the robot control cabinet, and the visual correction device. A robot fixture is provided at the front end of the six-axis robot. Further, the first stacking unit includes a stacking transmission line, a stacking lifting platform, a stacking CCD positioning and re-inspection device, a six-axis robot, a robot control cabinet, a power distribution cabinet, a bipolar plate bearing platform, a No. 1 electrode frame bearing platform, a No. 2 electrode frame bearing platform, an electrode bearing platform, a plug diaphragm bearing platform, an insulating top plate bearing platform, and a top end plate bearing platform. The stacking transmission line is installed and fixed on the ground in the middle of the first stacking unit, and the stacking transmission line is connected to the logistics line in a T-shape. A stacking lifting platform is provided on the stacking transmission line, and a stacking CCD positioning and re-inspection device is provided on the upper part of the stacking lifting platform. Two six-axis robots are installed and fixed on the ground on both sides of the stacking transmission line. A robot control cabinet, a power distribution cabinet, a bipolar plate bearing platform, a No. 1 electrode frame bearing platform, a No. 2 electrode frame bearing platform, an electrode bearing platform, a plug diaphragm bearing platform, an insulating top plate bearing platform, and a top end plate bearing platform are provided around the four six-axis robots. The robot control cabinet is respectively connected to the four six-axis robots by signal, and the power distribution cabinet is respectively electrically connected to the robot control cabinet and the four six-axis robots. The structure of the second stacking unit is the same as that of the first stacking unit. Further, the screw installation unit includes a six-axis robot, a robot control cabinet, a power distribution cabinet, and a screw bearing platform. The six-axis robot is installed and fixed on the ground of the screw installation unit. The six-axis robot is surrounded by a robot control cabinet, a power distribution cabinet, and a screw bearing platform. The robot control cabinet is connected to the six-axis robot by signal, and the power distribution cabinet is electrically connected to the six-axis robot and the robot control cabinet respectively. The screw bearing platform is used to place semi-finished screw materials with top fasteners installed; Furthermore, the servo clamping unit comprises a No. 1 translation track, a servo press, an automatic nut tightening device, a supporting frame, a lifting platform, and a lifting nut sleeve device. The No. 1 translation track is installed and fixed on the ground in the middle of the servo clamping unit. The No. 1 translation track is connected to the logistics line in a T-shape. The servo press is erected above the No. 1 translation track through pillars. The servo press is an 80-ton press. Automatic nut tightening devices are provided on both sides of the servo press. A supporting frame is provided on the No. 1 translation track directly below the servo press. A lifting platform is provided in the middle of the supporting frame. A circle of lifting nut sleeve devices is provided on the No. 1 translation track around the supporting frame. Furthermore, the stack height inspection unit includes a No. 2 translation track and a visual X / Y mobile module. The No. 2 translation track is installed and fixed on the ground in the middle of the stack height inspection unit. The No. 2 translation track is connected to the logistics line in a T-shape. Visual X / Y mobile modules are arranged on both sides of the No. 2 translation track. The visual X / Y mobile module is provided with four cameras. Furthermore, the battery stack overturning unit includes a flip trolley, which is installed at the end of the logistics line. The flip trolley includes a flip trolley body, a lifting fork, and a pallet. The flip trolley body is vertically installed on the logistics line. A 90-degree flip mechanism is provided at the bottom or side of the flip trolley body, so that the back of the flip trolley body lies flat on the logistics line. A lifting fork that can be lifted up and down is provided at the lower part of the flip trolley body facing the battery stack height inspection unit. A detachable pallet is provided between the lifting fork and the flip trolley body. The structure of the flip trolley body carrying the pallet is a pallet-carrying roller line. Furthermore, the finished product unloading unit includes a finished product unloading roller line and a pallet online truss robot. The finished product unloading roller line is connected to the end of the logistics line. A pallet online truss robot is provided above the finished product unloading roller line. An empty pallet storage space is provided on the ground on one side of the finished product unloading roller line.

[0007] An assembly method for a flow battery assembly line, the specific steps are as follows: S1. The six-axis robot of the bottom installation unit picks up the bottom end plate stored on the bottom end plate carrier by the robot clamp and moves it to the No. 1 walking trolley. The moving bottom end plate passes under the visual correction device, is guided and corrected by the visual correction device, and is placed on the No. 1 walking trolley. Then the six-axis robot picks up the insulating bottom plate stored on the insulating bottom plate carrier by the robot clamp and moves it to the No. 1 walking trolley. The moving insulating bottom plate passes under the visual correction device, is guided and corrected by the visual correction device, and is placed on the bottom end plate of the No. 1 walking trolley. S2. The No. 1 trolley carries the stacked bottom end plate and insulating bottom plate and moves to the first stacking unit through the logistics line. If the first stacking unit is stacking and assembling flow batteries, it moves to the second stacking unit. After the No. 1 trolley moves to the position and stops, the stacking lifting platform moves, forks the bottom end plate and insulating bottom plate and brings them back to the stacking transmission line. After the stacking lifting platform forks the bottom end plate and insulating bottom plate, the No. 1 trolley moves back to its original position and waits for orders. The six-axis robot of the corresponding stacking unit sequentially clamps the bipolar plate carrier, the No. 1 electrode frame carrier, the No. 2 electrode frame carrier, the electrode carrier, the plug diaphragm carrier, the insulating top plate carrier and the top end plate carrier corresponding to the flow battery components on the insulating bottom plate and stacks them according to the bipolar plate-No. The stacking order of electrode frame-electrode-plug diaphragm-No. 2 electrode frame-polar plate is stacked to 42 layers, and then the stacking order of No. 1 electrode frame-plug diaphragm-bipolar plate-No. 2 electrode frame-electrode-bipolar plate is stacked to 84 layers, and then the insulating top plate and the top end plate are placed on the top of the flow battery stacked with 84 layers. The stacking CCD positioning re-inspection device continuously maintains the positioning inspection of the flow battery during the stacking process. The No. 2 walking clamping trolley moves to the logistics line corresponding to the stacking unit, and the stacking lifting platform moves to place the stacked flow battery on the No. 2 walking clamping trolley. The stacking lifting platform moves back to its original position, and the clamp of the No. 2 walking clamping trolley clamps the flow battery tightly and moves to the logistics line corresponding to the screw installation unit; S3. The six-axis robot of the screw installation unit picks up the semi-finished screw material with the top fastener installed on the screw bearing platform, and sequentially inserts 20 screws vertically into the flow battery along the top surface of the top end plate, and limits all components between the bottom end plate and the top end plate of the flow battery; S4. After the screw is inserted, the No. 2 walking clamping trolley continues to move to the logistics line corresponding to the servo clamping unit, and directly moves to the top of the supporting frame through the No. 1 translation track. The lifting platform starts to rise, lifts the flow battery up and leaves the No. 2 walking clamping trolley, and the No. 2 walking clamping trolley moves back to the logistics line between the second stacking unit and the screw installation unit through the No. 1 translation track and the logistics line to stand by. The lifting platform starts to descend and places the flow battery on the supporting frame. The servo press starts to press down and continuously pressurizes the flow battery in multiple stages. After the servo press completes the pressure on the flow battery, the flow battery has been pressed. At this time, the bottom of the screw has extended from the bottom end plate of the flow battery to the bottom of the flow battery. The servo press continues to maintain pressure, and the workers waiting next to it The staff manually installs the flat washers, springs, T-type washers, spring washers and nuts at the bottom of all screws and tightens them. The fasteners at the bottom of the screws are the same as those at the top of the screws. After the fasteners at the bottom of the screws are installed, the staff starts the jacking nut sleeve device, which rises and clamps the nuts at the bottom of all screws. Then the automatic nut tightening devices on both sides of the servo press are started, and the nuts at the top of all screws are tightened according to the set torque. After the screws are tightened, the servo press rises and leaves the flow battery, and the lifting platform starts to rise, lifting the flow battery up and away from the supporting frame. The No. 3 walking trolley enters the servo clamping unit through the logistics line and the No. 1 translation track, and stops between the supporting frames. The lifting platform starts to land and places the flow battery on the No. 3 walking trolley; S5. After the No. 3 walking trolley carries the flow battery, it moves along the No. 1 translation track, the logistics line and the No. 2 translation track to the battery stack height inspection unit. The visual X / Y mobile module continuously scans and inspects the height and parallelism of the flow battery through four cameras. If the height and parallelism are unqualified, an alarm is issued to notify the staff to perform maintenance and adjustments on site until the inspection is qualified. S6, the No. 3 walking trolley carries the qualified flow battery and moves along the No. 2 translation track and the logistics line to the battery stack overturning unit, so that the flow battery is located above the lifting fork of the flip trolley. The lifting fork rises, lifts the flow battery and lifts it off the No. 3 walking trolley, then the 90-degree flip mechanism is started, and the main body of the flip trolley lies flat on its side on the logistics line. At this time, the flow battery lies on its side on the pallet; S7. The pallet carrying the flow battery is moved forward through the pallet-carrying roller line of the flip trolley body and the finished product unloading roller line of the finished product unloading unit to the bottom of the pallet online truss robot. The unmanned forklift outside the flow battery assembly line directly forks the pallet carrying the flow battery and delivers it to the finished product flow battery warehouse. The pallet online truss robot picks up an empty pallet from the empty pallet storage space and moves it to the finished product unloading roller line. The finished product unloading roller line and the pallet-carrying roller line of the flip trolley body run in the opposite direction to move the empty pallet to the flip trolley lying on its side. Finally, the 90-degree flip mechanism is started, and the flip trolley body is reset with the empty pallet, and the entire flow battery assembly process is completed.

[0008] The beneficial effects of the present invention are as follows: the present application designs an assembly line of flow batteries with an assembly line type, and the overall automation of the assembly line is high. Except for installing bottom fasteners and repairing and adjusting unqualified products, all other assembly and transportation steps have been realized by unmanned mechanical assembly. In the stacking assembly link which takes a long time, two groups of stacking units are also provided, and the assembly efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the liquid flow battery assembly line of the present invention; Figure 2 It is a schematic diagram of the bottom installation unit structure of the present invention; Figure 3 is a schematic diagram of the structure of the first stacking unit of the present invention; Figure 4 It is a structural schematic diagram of the screw installation unit of the present invention; Figure 5 It is a schematic diagram of the structure of the servo clamping unit of the present invention; Figure 6 It is a rear view schematic diagram of the servo clamping unit of the present invention; Figure 7 It is a schematic diagram of the structure of the battery stack height inspection unit of the present invention; Figure 8 It is a schematic diagram of the structure of the stack overturning unit of the present invention in a side-lying state; Fig. 9 It is a structural schematic diagram of the finished product unloading unit of the present invention; Fig.10 This is a schematic diagram of the structure of the No. 1 traveling trolley carrying a liquid flow battery of the present invention; Fig.11 This is a schematic diagram of the structure of the No. 2 walking clamp-type trolley of the present invention carrying a flow battery; Fig.12 This is a schematic diagram of the structure of the No. 3 traveling trolley of the present invention carrying a liquid flow battery; Figure numerals: 1. Logistics line; 11. Ground rail line; 12. No. 1 walking trolley; 13. No. 2 walking clamping trolley; 14. No. 3 walking trolley; 2. Bottom installation unit; 21. Six-axis robot; 22. Robot control cabinet; 23. Power distribution cabinet; 24. Bottom end plate bearing platform; 25. Insulating bottom plate bearing platform; 26. Visual correction device; 27. Robot fixture; 3. First stacking unit; 31. Stacking transmission line; 32. Stacking lifting platform; 33. Stacking CCD positioning re-inspection device; 34. Bipolar plate bearing platform; 35. No. 1 electrode frame bearing platform; 36. No. 2 electrode frame bearing platform; 37. Electrode bearing platform; 38. Plug diaphragm bearing platform; 39. Insulating top plate bearing platform; 301. Top end plate bearing platform Carrier; 4. Second stacking unit; 5. Screw installation unit; 51. Screw bearing platform; 6. Servo clamping unit; 61. No. 1 translation track; 62. Servo press; 63. Automatic nut tightening device; 64. Supporting frame; 65. Lifting platform; 66. Lifting nut sleeve device; 7. Battery stack height inspection unit; 71. No. 2 translation track; 72. Visual X / Y moving module; 8. Battery stack overturning unit; 81. Flipping trolley; 811. Flipping trolley body; 8111. 90-degree flipping mechanism; 8112. Pallet-carrying roller line; 812. Lifting fork; 813. Pallet; 9. Finished product unloading unit; 91. Finished product unloading roller line; 92. Pallet online truss robot; 10. Production line safety fence. DETAILED DESCRIPTION

[0010] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 As shown, a liquid flow battery assembly line includes a logistics line 1, a bottom installation unit 2, a first stacking unit 3, a second stacking unit 4, a screw installation unit 5, a servo clamping unit 6, a battery stack height inspection unit 7, a battery stack overturning unit 8, a finished product unloading unit 9, and a production line safety fence 10. The logistics line 1 is installed and fixed on the ground, and one side of the logistics line 1 is respectively provided with a bottom installation unit 2, a first stacking unit 3, a second stacking unit 4, a screw installation unit 5, a servo clamping unit 6, a battery stack height inspection unit 7, a battery stack overturning unit 8 and a finished product unloading unit 9 from the inlet end of the logistics line 1 to the outlet end of the logistics line 1. A production line safety fence 10 is provided around the logistics line 1 and each unit; The logistics line 1 is a transport unit that carries the flow battery to each unit for assembly; The bottom mounting unit 2 is a mounting unit for mounting the bottom end plate and the insulating bottom plate of the flow battery; The first stacking unit 3 is an installation unit for stacking the main body plate, insulating top plate and top end plate of the flow battery on the insulating bottom plate, and the second stacking unit 4 is the same as the first stacking unit 3. The first stacking unit 3 and the second stacking unit 4 are a flow battery assembly line for stacking two groups of flow batteries at the same time; The screw installation unit 5 is an installation unit for inserting a limiting screw into the stacked flow battery; The servo pressing unit 6 is an installation unit for the flow battery structure and the fastening screws which are completed by pressing and stacking the flow battery structure by a servo press 62; The battery stack height inspection unit 7 is a detection unit that detects whether the height and parallelism of the compressed flow battery are qualified through the visual X / Y moving module 72; The stack overturning unit 8 is a transport unit that uses a flipping trolley 81 to help the qualified flow battery to lie flat on its side; The finished product unloading unit 9 is a transport unit that transports the lying flow battery away from the logistics line 1 and replenishes the empty pallet 813 for the battery stack overturning unit 8; The production line safety fence 10 is a safety protection structure that isolates the production line and non-operating personnel.

[0011] Preferably, the logistics line 1 includes a ground rail line 11, a No. 1 walking trolley 12, a No. 2 walking clamping trolley 13, and a No. 3 walking trolley 14. The ground rail line 11 is installed and fixed on the ground of the production line. The No. 1 walking trolley 12, the No. 2 walking clamping trolley 13 and the No. 3 walking trolley 14 are provided on the ground rail line 11. The No. 1 walking trolley 12 is movably connected to the ground rail line 11 between the bottom mounting unit 2 and the second stacking unit 4, the No. 2 walking clamping trolley 13 is movably connected to the ground rail line 11 between the first stacking unit 3 and the servo clamping unit 6, and the No. 3 walking trolley 14 is movably connected to the ground rail line 11 between the servo clamping unit 6 and the battery stack overturning unit 8.

[0012] Preferably, the bottom installation unit 2 includes a six-axis robot 21, a robot control cabinet 22, a power distribution cabinet 23, a bottom end plate bearing platform 24, an insulating bottom plate bearing platform 25, a visual correction device 26, and a robot fixture 27. The six-axis robot 21 is installed and fixed on the ground of the bottom installation unit 2. The six-axis robot 21 is surrounded by a robot control cabinet 22, a power distribution cabinet 23, a bottom end plate bearing platform 24, an insulating bottom plate bearing platform 25 and a visual correction device 26. The robot control cabinet 22 is respectively connected to the six-axis robot 21 and the visual correction device 26 by signal. The power distribution cabinet 23 is respectively electrically connected to the six-axis robot 21, the robot control cabinet 22, and the visual correction device 26. A robot fixture 27 is provided at the front end of the six-axis robot 21. Preferably, the first stacking unit 3 includes a stacking transmission line 31, a stacking lifting platform 32, a stacking CCD positioning re-inspection device 33, a six-axis robot 21, a robot control cabinet 22, a power distribution cabinet 23, a bipolar plate support platform 34, a No. 1 electrode frame support platform 35, a No. 2 electrode frame support platform 36, an electrode support platform 37, a plug diaphragm support platform 38, an insulating top plate support platform 39, and a top end plate support platform 301. The stacking transmission line 31 is installed and fixed on the ground in the middle of the first stacking unit 3. The stacking transmission line 31 is connected to the logistics line 1 in a T-shape. A stacking lifting platform 32 is provided on the stacking transmission line 31, and a stacking lifting platform 32 is provided on the top of the stacking lifting platform 32. CCD positioning re-inspection device 33, two six-axis robots 21 are installed and fixed on the ground on both sides of the stacking transmission line 31, and a robot control cabinet 22, a power distribution cabinet 23, a bipolar plate bearing platform 34, a No. 1 electrode frame bearing platform 35, a No. 2 electrode frame bearing platform 36, an electrode bearing platform 37, a plug diaphragm bearing platform 38, an insulating top plate bearing platform 39, and a top end plate bearing platform 301 are arranged around the four six-axis robots 21, the robot control cabinet 22 is respectively connected to the four six-axis robots 21 by signal, the power distribution cabinet 23 is respectively electrically connected to the robot control cabinet 22 and the four six-axis robots 21, and the structure of the second stacking unit 4 is the same as that of the first stacking unit 3; Preferably, the screw installation unit 5 includes a six-axis robot 21, a robot control cabinet 22, a power distribution cabinet 23, and a screw bearing platform 51. The six-axis robot 21 is installed and fixed on the ground of the screw installation unit 5. The six-axis robot 21 is surrounded by a robot control cabinet 22, a power distribution cabinet 23 and a screw bearing platform 51. The robot control cabinet 22 is signal-connected to the six-axis robot 21. The power distribution cabinet 23 is electrically connected to the six-axis robot 21 and the robot control cabinet 22 respectively. The screw bearing platform 51 is used to place semi-finished screw materials with top fasteners installed. Preferably, the servo clamping unit 6 comprises a No. 1 translation track 61, a servo press 62, an automatic nut tightening device 63, a supporting frame 64, a lifting platform 65, and a lifting nut sleeve device 66. The No. 1 translation track 61 is installed and fixed on the ground in the middle of the servo clamping unit 6. The No. 1 translation track 61 is connected to the logistics line 1 in a T-shape. The servo press 62 is erected above the No. 1 translation track 61 through pillars. The servo press 62 is an 80-ton press. Automatic nut tightening devices 63 are provided on both sides of the servo press 62. A supporting frame 64 is provided on the No. 1 translation track 61 directly below the servo press 62. A lifting platform 65 is provided in the middle of the supporting frame 64. A circle of lifting nut sleeve devices 66 are provided on the No. 1 translation track 61 around the supporting frame 64. Preferably, the stack height inspection unit 7 comprises a second translation track 71 and a visual X / Y mobile module 72, wherein the second translation track 71 is installed and fixed on the ground in the middle of the stack height inspection unit 7, and the second translation track 71 is connected to the logistics line 1 in a T-shape, and visual X / Y mobile modules 72 are arranged on both sides of the second translation track 71, and the visual X / Y mobile module 72 is provided with four cameras; Preferably, the battery stack overturning unit 8 includes a flip trolley 81, which is installed at the end of the logistics line 1. The flip trolley 81 includes a flip trolley body 811, a lifting fork 812, and a pallet 813. The flip trolley body 811 is vertically installed on the logistics line 1. The bottom or side of the flip trolley body 811 is provided with a 90-degree flip mechanism 8111 on which the back of the flip trolley body 811 lies flat on the logistics line 1. The lower part of the flip trolley body 811 facing the battery stack height inspection unit 7 is provided with a lifting fork 812 that can be lifted up and down. A detachable pallet 813 is provided between the lifting fork 812 and the flip trolley body 811. The structure of the flip trolley body 811 carrying the pallet 813 is a pallet roller line 8112; Preferably, the finished product unloading unit 9 includes a finished product unloading roller line 91 and a pallet online truss robot 92. The finished product unloading roller line 91 is connected to the end of the logistics line 1. A pallet online truss robot 92 is provided above the finished product unloading roller line 91. An empty pallet storage space is provided on the ground on one side of the finished product unloading roller line 91.

[0013] An assembly method for a flow battery assembly line, the specific steps are as follows: S1, the six-axis robot 21 of the bottom installation unit 2 clamps the bottom end plate stored on the bottom end plate carrying platform 24 through the robot clamp 27 and moves it to the No. 1 walking trolley 12. The moving bottom end plate passes under the visual correction device 26, is guided and corrected by the visual correction device 26, and is placed on the No. 1 walking trolley 12. Then the six-axis robot 21 clamps the insulating bottom plate stored on the insulating bottom plate carrying platform 25 through the robot clamp 27 and moves it to the No. 1 walking trolley 12. The moving insulating bottom plate passes under the visual correction device 26, is guided and corrected by the visual correction device 26, and is placed on the bottom end plate of the No. 1 walking trolley 12. S2, the No. 1 walking trolley 12 carries the stacked bottom end plate and the insulating bottom plate and moves to the first stacking unit 3 through the logistics line 1. If the first stacking unit 3 is stacking and assembling liquid flow batteries, it moves to the second stacking unit 4. After the No. 1 walking trolley 12 moves to the position and stops, the stacking lifting platform 32 moves, forks the bottom end plate and the insulating bottom plate and brings them back to the stacking transmission line 31. After the stacking lifting platform 32 forks the bottom end plate and the insulating bottom plate, the No. 1 walking trolley 12 moves back to its original position and waits. The six-axis robot 21 of the corresponding stacking unit sequentially clamps the bipolar plate carrier 34, the No. 1 electrode frame carrier 35, the No. 2 electrode frame carrier 36, the electrode carrier 37, the plug diaphragm carrier 38, the insulating top plate carrier 39 and the top end plate carrier 301 The corresponding liquid flow battery components are stacked on the insulating bottom plate , stack to 42 layers in the stacking order of bipolar plate-No. 1 electrode frame-electrode-plug diaphragm-No. 2 electrode frame-polar plate, and then stack to 84 layers in the stacking order of No. 1 electrode frame-plug diaphragm-bipolar plate-No. 2 electrode frame-electrode-bipolar plate, and then successively place insulating top plates and top end plates on the top of the flow battery stacked with 84 layers, and the stacking CCD positioning re-inspection device 33 continuously maintains positioning inspection on the flow battery during the stacking process, and the No. 2 walking clamping trolley 13 moves to the logistics line 1 corresponding to the stacking unit, and the stacking lifting platform 32 moves, and the stacked flow battery is placed on the No. 2 walking clamping trolley 13 after the stacking is completed, and the stacking lifting platform 32 moves back to its original position, and the clamp of the No. 2 walking clamping trolley 13 clamps the flow battery tightly, and moves to the logistics line 1 corresponding to the screw installation unit 5; S3, the six-axis robot 21 of the screw installation unit 5 picks up the semi-finished screw material with the top fastener installed stored on the screw bearing platform 51, and sequentially inserts 20 screws vertically into the flow battery along the top surface of the top end plate, and limits all components between the bottom end plate and the top end plate of the flow battery; S4, after the screw is inserted, the No. 2 walking clamping trolley 13 continues to move to the logistics line 1 corresponding to the servo clamping unit 6, and directly moves to the top of the supporting frame 64 through the No. 1 translation track 61, the jacking platform 65 starts to rise, lifts the liquid flow battery away from the No. 2 walking clamping trolley 13, and the No. 2 walking clamping trolley 13 moves back to the logistics line 1 between the second stacking unit 4 and the screw installation unit 5 through the No. 1 translation track 61 and the logistics line 1 to stand by, the jacking platform 65 starts to descend, and places the liquid flow battery on the supporting frame 64, and the servo press 62 starts to press down, and the liquid flow battery is continuously pressurized in multiple stages. After the servo press 62 completes the pressurization of the liquid flow battery, the liquid flow battery has been pressed, and the bottom of the screw has extended from the bottom end plate of the liquid flow battery to the bottom of the liquid flow battery. The servo press 62 continues to maintain pressure, and the workers waiting next to it The staff manually installs the flat washers, springs, T-type washers, spring washers and nuts at the bottom of all screws and tightens them. The fasteners at the bottom of the screws are the same as the fasteners at the top of the screws. After the fasteners at the bottom of the screws are installed, the staff starts the jacking nut sleeve device 66. The jacking nut sleeve device 66 rises and clamps the nuts at the bottom of all screws. Then the nut automatic tightening devices 63 on both sides of the servo press 62 are started to tighten the nuts at the top of all screws according to the set torque. After the screws are tightened, the servo press 62 rises and leaves the flow battery, and the lifting platform 65 starts to rise, lifting the flow battery up and away from the supporting frame 64. The No. 3 walking trolley 14 enters the servo clamping unit 6 through the logistics line 1 and the No. 1 translation track 61, and stops between the supporting frame 64. The lifting platform 65 starts to descend and places the flow battery on the No. 3 walking trolley 14; S5, after the No. 3 walking trolley 14 is carried to the flow battery, it moves along the No. 1 translation track 61, the logistics line 1 and the No. 2 translation track 71 to the battery stack height inspection unit 7, and the visual X / Y mobile module 72 continuously scans and inspects the height and parallelism of the flow battery through four cameras. If the height and parallelism are unqualified, an alarm is issued to notify the staff to perform maintenance and adjustment on site until the inspection is qualified; S6, the No. 3 walking trolley 14 carries the qualified flow battery and moves along the No. 2 translation track 71 and the logistics line 1 to the battery stack overturning unit 8, so that the flow battery is located above the lifting fork 812 of the flipping trolley 81, and the lifting fork 812 rises, lifts the flow battery and lifts it away from the No. 3 walking trolley 14, and then the 90-degree flipping mechanism 8111 is started, and the flipping trolley body 811 lies flatly on the logistics line 1, and the flow battery lies on its side on the pallet 813; S7. The pallet 813 carrying the flow battery is moved forward through the pallet roller line 8112 of the flip trolley body 811 and the finished product unloading roller line 91 of the finished product unloading unit 9 to the bottom of the pallet online truss manipulator 92. The unmanned forklift outside the flow battery assembly line directly forks the pallet 813 carrying the flow battery and delivers it to the finished product flow battery warehouse. The pallet online truss manipulator 92 picks up an empty pallet 813 from the empty pallet storage space and moves it to the finished product unloading roller line 91. The finished product unloading roller line 91 and the pallet roller line 8112 of the flip trolley body 811 operate in reverse to move the empty pallet 813 to the flip trolley 81 lying on its side. Finally, the 90-degree flip mechanism 8111 is started, and the flip trolley body 811 is reset with the empty pallet 813, and the whole process of flow battery assembly is completed.

[0014] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A flow battery assembly line, characterized in that: It includes a logistics line, a bottom installation unit, a first stacking unit, a second stacking unit, a screw installation unit, a servo clamping unit, a battery stack height inspection unit, a battery stack overturning unit, a finished product unloading unit, and a production line safety fence. The logistics line is installed and fixed on the ground. One side of the logistics line is respectively provided with a bottom installation unit, a first stacking unit, a second stacking unit, a screw installation unit, a servo clamping unit, a battery stack height inspection unit, a battery stack overturning unit, and a finished product unloading unit from the logistics line inlet end to the logistics line outlet end. The logistics line and each unit are surrounded by a production line safety fence; The logistics line is a transport unit that carries the flow battery to each unit for assembly; The bottom mounting unit is a mounting unit for mounting the bottom end plate and the insulating bottom plate of the flow battery; The first stacking unit is an installation unit for stacking the flow battery main body plate, the insulating top plate and the top end plate on the insulating bottom plate, the second stacking unit is the same as the first stacking unit, and the first stacking unit and the second stacking unit are a flow battery assembly line for stacking two groups of flow batteries at the same time; The screw installation unit is an installation unit for inserting a limiting screw into the stacked flow battery; The servo pressing unit is an installation unit for the flow battery structure and the fastening screws which are completed by pressing and stacking with a servo press; The battery stack height inspection unit is a detection unit that detects whether the height and parallelism of the compressed flow battery are qualified through a visual X / Y mobile module; The stack overturning unit is a transport unit that uses a flipping trolley to assist the detection of qualified liquid flow batteries lying flat on their side; The finished product unloading unit is a transport unit that transports the sideways liquid flow battery away from the logistics line and replenishes empty pallets for the battery stack overturning unit; The production line safety fence is a safety protection structure that isolates the production line and non-operating personnel.

2. A flow battery assembly line according to claim 1, characterized in that: The logistics line includes a ground rail line, a No. 1 walking trolley, a No. 2 walking clamping trolley, and a No. 3 walking trolley. The ground rail line is installed and fixed on the ground of the production line. The No. 1 walking trolley, the No. 2 walking clamping trolley and the No. 3 walking trolley are arranged on the ground rail line. The No. 1 walking trolley is movably connected to the ground rail line between the bottom mounting unit and the second stacking unit, the No. 2 walking clamping trolley is movably connected to the ground rail line between the first stacking unit and the servo clamping unit, and the No. 3 walking trolley is movably connected to the ground rail line between the servo clamping unit and the battery stack overturning unit.

3. A liquid flow battery assembly line according to claim 1, characterized in that: The bottom mounting unit includes a six-axis robot, a robot control cabinet, a power distribution cabinet, a bottom end plate supporting platform, an insulating bottom plate supporting platform, a visual correction device, and a robot fixture. The six-axis robot is installed and fixed on the ground of the bottom mounting unit. The six-axis robot is surrounded by a robot control cabinet, a power distribution cabinet, a bottom end plate supporting platform, an insulating bottom plate supporting platform and a visual correction device. The robot control cabinet is respectively connected to the six-axis robot and the visual correction device by signal. The power distribution cabinet is respectively electrically connected to the six-axis robot, the robot control cabinet, and the visual correction device. A robot fixture is provided at the front end of the six-axis robot.

4. A flow battery assembly line according to claim 3, characterized in that: The first stacking unit includes a stacking transmission line, a stacking lifting platform, a stacking CCD positioning and re-inspection device, a six-axis robot, a robot control cabinet, a power distribution cabinet, a bipolar plate bearing platform, a No. 1 electrode frame bearing platform, a No. 2 electrode frame bearing platform, an electrode bearing platform, a plug diaphragm bearing platform, an insulating top plate bearing platform, and a top end plate bearing platform. The stacking transmission line is installed and fixed on the ground in the middle of the first stacking unit, and the stacking transmission line is connected to the logistics line in a T-shape. A stacking lifting platform is provided on the stacking transmission line, and a stacking CCD positioning and re-inspection device is provided on the upper part of the stacking lifting platform. Two six-axis robots are installed and fixed on the ground on both sides of the stacking transmission line. A robot control cabinet, a power distribution cabinet, a bipolar plate bearing platform, a No. 1 electrode frame bearing platform, a No. 2 electrode frame bearing platform, an electrode bearing platform, a plug diaphragm bearing platform, an insulating top plate bearing platform, and a top end plate bearing platform are arranged around the four six-axis robots. The robot control cabinet is respectively connected to the four six-axis robots by signal, and the power distribution cabinet is respectively electrically connected to the robot control cabinet and the four six-axis robots. The structure of the second stacking unit is the same as that of the first stacking unit.

5. A flow battery assembly line according to claim 3, characterized in that: The screw installation unit includes a six-axis robot, a robot control cabinet, a power distribution cabinet, and a screw bearing platform. The six-axis robot is installed and fixed on the ground of the screw installation unit. The six-axis robot is surrounded by a robot control cabinet, a power distribution cabinet and a screw bearing platform. The robot control cabinet is signal-connected to the six-axis robot, and the power distribution cabinet is electrically connected to the six-axis robot and the robot control cabinet respectively. The screw bearing platform is used to place semi-finished screw materials with top fasteners installed.

6. A flow battery assembly line according to claim 1, characterized in that: The servo clamping unit includes a No. 1 translation track, a servo press, an automatic nut tightening device, a supporting frame, a lifting platform, and a lifting nut sleeve device. The No. 1 translation track is installed and fixed on the ground in the middle of the servo clamping unit. The No. 1 translation track is connected to the logistics line in a T shape. The servo press is erected above the No. 1 translation track through pillars. The servo press is an 80-ton press. Automatic nut tightening devices are provided on both sides of the servo press. A supporting frame is provided on the No. 1 translation track directly below the servo press. A lifting platform is provided in the middle of the supporting frame. A circle of lifting nut sleeve devices is provided on the No. 1 translation track around the supporting frame.

7. A flow battery assembly line according to claim 1, characterized in that: The battery stack height inspection unit includes a No. 2 translation track and a visual X / Y mobile module. The No. 2 translation track is installed and fixed on the ground in the middle of the battery stack height inspection unit. The No. 2 translation track is connected to the logistics line in a T shape. Visual X / Y mobile modules are arranged on both sides of the No. 2 translation track, and the visual X / Y mobile module is provided with four cameras.

8. A flow battery assembly line according to claim 1, characterized in that: The battery stack overturning unit includes a flipping trolley, which is installed at the end of the logistics line. The flipping trolley includes a flipping trolley body, a lifting fork, and a pallet. The flipping trolley body is upright installed on the logistics line. A 90-degree flipping mechanism is provided at the bottom or side of the flipping trolley body, so that the back of the flipping trolley body lies flat on the logistics line. A lifting fork that can be lifted up and down is provided at the lower part of the flipping trolley body facing the battery stack height inspection unit. A detachable pallet is provided between the lifting fork and the flipping trolley body. The structure of the flipping trolley body carrying the pallet is a pallet carrying roller line.

9. A flow battery assembly line according to claim 8, characterized in that: The finished product unloading unit includes a finished product unloading drum line and a pallet online truss robot. The finished product unloading drum line is connected to the end of the logistics line. A pallet online truss robot is provided above the finished product unloading drum line. An empty pallet storage space is provided on the ground on one side of the finished product unloading drum line.

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