CN112151845A

CN112151845A - Vanadium redox flow galvanic pile assembling system

Info

Publication number: CN112151845A
Application number: CN202011161016.2A
Authority: CN
Inventors: 陈继军; 杨江涛; 唐升智; 倪云涛
Original assignee: Leshan Shengjia Electric Co ltd
Current assignee: Leshan Shengjia Electric Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2020-12-29

Abstract

The invention discloses a vanadium redox flow galvanic pile assembly system, which comprises a galvanic pile unit assembly jig for assembling galvanic pile units and a sealing plate assembly system for assembling galvanic pile sealing plates; the sealing plate assembling system comprises a welding system, a press-fitting clamp, an assembling table, a sealing plate welding tool and a converging nozzle welding tool; the welding system comprises a controller, a moving assembly and a welding assembly, wherein the controller controls the moving assembly to drive the welding assembly to move so as to weld and assemble the sealing plate on the electric pile on the assembly table. The assembly system is beneficial to the quick, efficient and high-quality assembly of the vanadium redox flow galvanic pile.

Description

Vanadium redox flow galvanic pile assembling system

Technical Field

The invention relates to a system for producing a vanadium redox flow galvanic pile.

Background

The vanadium redox flow battery is a redox battery which takes vanadium as an active substance and is in a circulating flow liquid state. The electric energy of the vanadium battery is stored in sulfuric acid electrolyte of vanadium ions with different valence states in a chemical energy mode, the electrolyte is pressed into a battery stack body through an external pump and circularly flows in closed loops of different liquid storage tanks and half batteries under the action of mechanical power, a proton exchange membrane is adopted as a diaphragm of the battery pack, the electrolyte solution parallelly flows through the surface of an electrode and generates electrochemical reaction, and current is collected and conducted through double electrode plates, so that the mutual conversion of the electric energy and the chemical energy is realized, and the charging and the discharging of the battery are realized.

The existing vanadium redox flow galvanic pile is assembled manually, and has low production efficiency and unstable quality.

Disclosure of Invention

In view of this, the invention provides a vanadium redox flow galvanic pile assembly system, which is used for assembling a vanadium redox flow galvanic pile with high efficiency and high quality.

In order to solve the technical problems, the technical scheme of the invention is as follows: a vanadium redox flow galvanic pile assembly system comprises a galvanic pile unit assembly jig for assembling galvanic pile units and a sealing plate assembly system for assembling galvanic pile sealing plates; the sealing plate assembling system comprises a welding system, a press-fitting clamp, an assembling table, a sealing plate welding tool and a converging nozzle welding tool; the welding system comprises a controller, a moving assembly and a welding assembly, wherein the controller controls the moving assembly to drive the welding assembly to move so as to weld and assemble the sealing plate on the electric pile on the assembly table. The battery unit assembling jig is used for guaranteeing the assembling precision and stability of the electric pile unit. The electric pile seal plate assembly system adopts an automatic welding mode to carry out the assembly of seal plates, the seal plates are perpendicular to battery units and diaphragms in an electric pile, the seal plates are in whole-face welding connection with the side faces in the stacking direction of the electric pile, namely the seal plates need to be in complete welding connection with each battery unit, so that the wiring path of a welding assembly needs to cover the whole area of the side faces of the electric pile, a moving assembly drives the welding assembly to carry out welding wiring under the control of a controller, the automation degree is high, the efficiency is high, the welding precision and the welding quality can be effectively guaranteed, the electric pile in a stacking structure is placed on an assembly table under the effectively compressed state and then is welded and assembled with the seal plates, the close fitting of all stacking elements of the electric pile can be guaranteed, the assembly quality of the electric pile is guaranteed, and the seal plates are in welding connection with the side faces in the stacking direction of the electric pile under the close fitting state of the, the assembly precision and quality can be effectively guaranteed, the connection tightness is guaranteed, the situation that electrolyte permeates and leaks in the flow battery is avoided, and the performance and the service life of the flow battery are guaranteed.

As an improvement, the electric pile unit assembling jig comprises a bearing platform and a limiting component arranged on the bearing platform, the limiting component comprises a fixed limiting part and a movable limiting part, the fixed limiting part is fixedly arranged on the bearing platform, the movable limiting part is movable and adjustable along the surface of the bearing platform in the direction towards the fixed limiting part, and a part to be processed is limited between the fixed limiting part and the movable limiting part. The electric pile unit assembling jig utilizes the bearing platform to bear and place the part to be processed, positions the part to be processed through the fixed limiting part and the movable limiting part, accurately limits the part to be processed, and ensures high stability in the welding process, thereby effectively ensuring the assembling precision, improving the assembling quality and further ensuring the good performance of the flow battery. And the position of the movable limiting part is adjustable, namely, the distance between the fixed limiting part and the movable limiting part can be adjusted to match parts to be processed with different sizes, so that the flexibility and adjustability are good, and the application range is wide.

As an improvement, the fixed limiting part comprises two mutually perpendicular limiting strips, two groups of movable limiting parts are arranged and are respectively matched with one limiting strip, and the movable limiting parts are movably adjustable in the direction perpendicular to the limiting strips; the movable limiting part comprises a push plate and a telescopic driving mechanism for driving the push plate to move. Simple structure, convenient to use utilizes two mutually perpendicular's spacing strips can wait to process the part in two directions and carry out the accuracy spacing to guarantee welding process's precision. The push plate is matched with the edge of the part to be processed, and the telescopic driving mechanism controls the position of the push plate so as to be adapted to the parts to be processed with different sizes.

Preferably, the machining fixture further comprises a pressing plate, wherein the pressing plate is used for covering the part to be machined limited between the fixed limiting part and the movable limiting part; the machining tool further comprises a pressing block, and the pressing block is used for being placed on the top surface of the pressing plate covering the part to be machined. The pressing plate is utilized to guarantee the smoothness of splicing of the parts to be processed, the parts to be processed are uniformly and tightly attached to the whole plane, the situation that the parts to be processed are staggered and warped and jacked up due to mutual splicing is avoided, the welding tightness is improved, the assembling precision of the parts to be processed is improved, the stability of the parts to be processed in the welding process is improved, the situation of displacement is avoided, and the processing quality of the flow battery unit is improved. Utilize the briquetting to improve the effort that compresses tightly of treating the processing part, further guarantee to treat and all evenly closely laminate on whole plane between the processing part, guarantee to treat the stability of processing part in whole welding process to improve the equipment precision, improve flow battery unit's production quality, and the use flexibility of briquetting is good, can place in the position of difference according to the part of treating of not unidimensional, can also select different quantity in a flexible way.

As an improvement, the press-fitting clamp comprises a pull rod assembly and two clamping plates which are parallel to each other, connecting seats extending out of the outer sides of the edges of the clamping plates are arranged on the clamping plates, a plurality of connecting seats are arranged on the connecting seats in the whole circumferential direction of the edges of the clamping plates at intervals, and two ends of the pull rod assembly are respectively connected with the connecting seats on the two clamping plates, so that a pile which is positioned between the clamping plates and is perpendicular to the clamping plates in the stacking direction is compressed and fixed by the two clamping plates. The clamp plate that pressure equipment anchor clamps pass through the tie rod assembly and connect can fully compress tightly the pile, because the connecting seat is provided with a plurality of at the whole circumference at clamp plate edge at the interval, thereby corresponding connecting seat on two clamp plates is connected by the tie rod assembly respectively, ensure that two clamp plates can apply even and stable packing force on the whole plane of range upon range of battery unit and diaphragm, ensure that laminating that range upon range of battery unit and diaphragm can be abundant is inseparable, ensure the leakproofness, ensure that battery unit is effectively kept apart by the diaphragm, the condition of the mutual seepage flow of the electrolyte of positive negative pole and negative pole avoids appearing, ensure redox flow battery's performance reliability, the connecting seat that outwards extends reserves sufficient space for the shrouding assembly, avoid taking place to interfere with the welding set who is used for welding the shrouding, ensure that the assembly can be reliable going on, and then ensure.

As an improvement, the edge of at least one of the clamping plates is also connected with a limit stopper perpendicular to the clamping plate, and the limit stopper is used for limiting and aligning the edge of the galvanic pile; the limiting stopper comprises a limiting baffle and a limiting barrier strip, the limiting baffle is positioned at the edge of the long edge of the rectangular clamping plate and covers the length of the whole long edge, and the limiting barrier strip is positioned at the edge of the short edge of the clamping plate and covers the local length of the short edge. The electric pile comprises a plurality of electric pile units and diaphragms which are laminated together, the alignment reference is formed by utilizing the limiting stoppers, and the battery units and the diaphragms are leaned on the limiting stoppers so as to ensure the lamination regularity of the battery units and the diaphragms and improve the assembly precision. Because spacing fender spare is located the edge of splint to spacing fender spare can not hinder two splint to be close to each other under pull rod assembly's effect, can not produce unnecessary interference, and the guarantee pressing tool can have reliable compressing tightly effect to the galvanic pile. And a plurality of edges of the stacked battery cells and the separators can be aligned, thereby improving the alignment effect of the battery cells and the separators.

Preferably, one side of the limiting barrier strip, which faces the galvanic pile, is provided with a groove, a top strip is arranged in the groove, one side of the limiting barrier strip, which faces away from the galvanic pile, is provided with a screw hole communicated to the groove, and the top bolt is arranged in the screw hole to push the top strip to align the edges of the galvanic pile. And one side of the limiting barrier strip, which is back to the galvanic pile, is provided with a through hole communicated to the groove, and a connecting rod connected with the top strip penetrates through the through hole.

As an improvement, the assembly table comprises a base and a rotary table rotatably arranged on the base, and a press-fitting clamp for clamping the galvanic pile is placed on the rotary table; the locking mechanism is characterized in that a locking mechanism for locking the rotary table after the rotary table rotates in place is further arranged between the base and the rotary table, the locking mechanism comprises a telescopic pin assembly and a locking part, at least one of the telescopic pin assembly and the locking part is provided with a plurality of parts at intervals along the rotation circumference of the rotary table, the telescopic pin assembly is arranged on the rotary table or the base, and the locking part is arranged on the other of the rotary table and the base. The assembly table adopts a turntable to drive the press-fitting fixture which clamps the galvanic pile to rotate so as to adjust the orientation of the galvanic pile, can conveniently assemble and process the sealing plate at each side of the galvanic pile, replaces the traditional hoisting and moving mode, has higher moving safety, does not have the risk that a press-mounting clamp clamping the galvanic pile falls off, is more convenient to move and high in precision, ensures the assembly precision of the sealing plate, thereby ensuring the assembly sealing performance, effectively avoiding the electrolyte leakage condition of the flow battery in the use process, positioning the press-fitting clamp and the rotary table through the positioning mechanism, therefore, the stable and high-precision position relation between the press-fitting clamp and the rotary table is guaranteed, the condition that the press-fitting clamp which clamps the galvanic pile in the rotating process and the rotary table are relatively deviated is avoided, the galvanic pile can be accurately rotated in place by ensuring that the rotary table is rotated in place, and the sealing plate assembling precision is further guaranteed.

As an improvement, the sealing plate welding tool comprises a frame-shaped sealing plate press-fitting mold and a sealing plate press-fitting light-transmitting layer made of a light-transmitting material; shrouding, shrouding pressure equipment euphotic layer and shrouding pressure equipment mould set gradually outwards from the side of pile, shrouding pressure equipment euphotic layer cover whole shrouding, shrouding pressure equipment mould and pressure equipment anchor clamps edge spiro union, shrouding pressure equipment mould push down the edge of shrouding pressure equipment euphotic layer so that shrouding pressure equipment euphotic layer sticiss the laminating at the pile side with the shrouding. Simple structure can apply the even pressure that covers its whole face to the shrouding, ensures that the shrouding whole face closely laminates with the pile side to improve welding quality and leakproofness.

As an improvement, the confluence nozzle welding tool comprises a frame-shaped confluence nozzle press-fitting mold, wherein a confluence nozzle press-fitting light-transmitting layer I made of a light-transmitting material is fixed on the confluence nozzle press-fitting mold; a confluence nozzle press-fitting euphotic layer II made of a euphotic material is arranged behind the confluence nozzle press-fitting mould; a hollow part matched with the shape of the electrolyte cavity of the confluence nozzle is arranged on the confluence nozzle press-fitting euphotic layer II; and the confluence nozzle press-fitting mold is fixed on a press-fitting clamp of the galvanic pile. Thereby convenient and fast location and compress tightly the mouth that converges on the shrouding welds fast. Greatly reducing the labor intensity of workers and improving the welding quality.

The invention has the advantages that: according to the electric pile assembly system with the structure, after high-quality electric pile units assembled by the electric pile unit assembly jig are stacked into an electric pile, the electric pile is subjected to automatic sealing plate assembly in an effectively compressed state, the processing efficiency is high, the assembly precision is high, the quality is good, each laminated element of the electric pile can be tightly attached, the sealing plate can be effectively welded and connected with the laminated elements of the electric pile, the assembly tightness is improved, the condition that electrolyte permeates and leaks from the flow battery is avoided, and the performance and the service life of the flow battery are guaranteed;

adopt the revolving stage to drive the pressure equipment anchor clamps of centre gripping galvanic pile and rotate the orientation in order to adjust the galvanic pile, can be nimble convenient carry out the shrouding assembly to all different sides of galvanic pile, and is high, the precision is high to the removal reliability of galvanic pile, and guarantee shrouding assembly precision ensures the assembly leakproofness.

Drawings

FIG. 1 is a schematic structural view of a cell stack assembly jig according to the present invention.

FIG. 2 is a general view of the closure plate assembly system of the present invention;

FIG. 3 is a schematic view of the structure of the mounting station;

FIG. 4 is a schematic view of the press-fitting jig engaging a first set of locating holes on the turntable;

FIG. 5 is a schematic view of the press-fitting jig engaging a second set of locating holes in the turntable;

FIG. 6 is a schematic structural view of a press-fitting jig;

fig. 7 is a schematic view of the pre-fixing of the sealing plates to the stack;

FIG. 8 is a schematic side view of a sealing plate welding tool;

FIG. 9 is a schematic structural view of a press-fitting mold for a sealing plate;

FIG. 10 is a schematic side view of the welding fixture for the bus bar;

fig. 11 is a top view of the bus bar pressure-fitting light transmitting layer II.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.

The invention comprises a galvanic pile unit assembling jig for assembling galvanic pile units and a sealing plate assembling system for assembling galvanic pile sealing plates;

as shown in fig. 1, the electric pile unit assembling jig includes a bearing platform 101 and a limiting component disposed on the bearing platform 101, the limiting component includes a fixed limiting portion 102 and a movable limiting portion 103, the fixed limiting portion 102 is fixedly disposed on the bearing platform 101, the movable limiting portion 103 is movable and adjustable along the surface of the bearing platform 101 in the direction toward the fixed limiting portion 102, and a component to be processed is limited between the fixed limiting portion 102 and the movable limiting portion 103.

The flow battery unit of the embodiment is composed of a guide plate, a bipolar plate assembly and a guide plate which are sequentially overlapped, wherein the bipolar plate assembly is composed of a bipolar plate, an insulating frame and a fixing frame, the insulating frame and the fixing frame are both of frame-shaped structures with hollow middle parts, the insulating frame surrounds the whole edge periphery of the bipolar plate, the fixing frame is respectively arranged on the front side and the back side of the bipolar plate, and the fixing frame is respectively connected with the bipolar plate and the insulating frame in a sealing manner on the whole circumferential direction of the edge of the bipolar plate;

the assembling of the flow battery unit comprises the welding connection of the bipolar plate, the insulating frame and the fixing frame, after the bipolar plate assembly is obtained through the assembling, the bipolar plate assembly is welded and connected with the guide plate, and the two welding and assembling processes are completed by adopting the flow battery unit assembling jig of the embodiment.

Specifically, the flow battery cell is a rectangular laminated structure, the fixed limiting part 102 includes two mutually perpendicular limiting strips, the two limiting strips are spliced to form a right-angle structure, two groups of the movable limiting parts 103 are provided, and are respectively matched with one limiting strip, the movable limiting parts 103 are movably adjustable in a direction perpendicular to the limiting strips, and each group of the movable limiting parts 103 includes a plurality of movable limiting parts arranged at intervals in a direction perpendicular to the movable direction, in the embodiment, two movable limiting parts 103 are specifically provided for each group, and the two movable limiting parts 103 are synchronously movably adjusted, that is, the distances from the two movable limiting parts 103 to the limiting strips are always the same no matter how the distance is adjusted;

the movable limiting part 103 comprises a push plate and a telescopic driving mechanism for driving the push plate to move, the telescopic driving mechanism is specifically an air cylinder, and the telescopic driving mechanism is simple in structure, convenient and flexible to adjust and high in precision.

The assembly jig for the flow cell unit further comprises a pressing plate 4 and a pressing block 5, wherein the pressing plate 4 is used for covering a part to be processed which is limited between the fixed limiting part 102 and the movable limiting part 103, so that the part to be processed is uniformly and tightly attached to the whole plane, the pressing block 105 is used for being placed on the top surface of the pressing plate 104 which covers the part to be processed, the pressing acting force is improved, the part to be processed is further uniformly and tightly attached to the whole plane, the pressing plate 4 is made of a transparent material and specifically can be made of an acrylic plate, the welding part is completely pressed by the pressing plate 104, welding laser can penetrate through the pressing plate 4 to weld the part to be processed below the pressing plate, the pressing block 105 and the bearing platform 101 are magnetically attracted, the pressing acting force of the part to be processed is increased, and therefore the assembly precision and the welding quality of the part to be processed are improved, and the surface of the pressing block 105 is wrapped with a flexible layer, so that damage to parts to be processed, pressing plates and the like when the pressing block falls, collides and the like is avoided, the use safety is improved, and the integrity of the parts to be processed and the pressing plates is guaranteed.

When the bipolar plate, the insulating frame and the fixed frame are welded and assembled, the movable limiting part 3 is adjusted to enable the distance between the movable limiting part 103 and the fixed limiting part 102 to reach a required size, then the bipolar plate and the insulating frame are placed on the bearing platform 101 between the movable limiting part 103 and the fixed limiting part 102 and are flattened to be tightly attached to the bearing platform 101, the insulating frame is positioned on the periphery of the bipolar plate, the insulating frame is directly and closely attached to the movable limiting part 103 and the fixed limiting part 102 to be contacted with the movable limiting part 103, then the fixed frame is placed on the bipolar plate and the insulating frame, the periphery of the fixed frame is closely attached to the movable limiting part 103 and the fixed limiting part 102 to be contacted with the movable limiting part 103, then the upper pressure plate 104 is placed to ensure the splicing smoothness of the bipolar plate, the insulating frame and the fixed frame, then the pressure block 105 is placed to be further compressed, and finally the bipolar plate, after the assembly of the surface welding is completed, the pressing block 105 and the pressing plate 104 are taken down, then the semi-finished product is turned over and placed on the bearing platform 101 between the movable limiting part 103 and the fixed limiting part 102, then another fixing frame is placed on the bipolar plate and the insulating frame, then the pressing plate 104 and the pressing block 105 are placed, the bipolar plate, the insulating frame and the fixing frame are welded and fixed together by the laser welding device according to a preset path, and finally the bipolar plate assembly is obtained.

When assembling the flow battery unit, firstly putting the bipolar plate assembly on the bearing platform 101 between the movable limiting part 103 and the fixed limiting part 102, the bipolar plate assembly needs to be flatly put to be tightly attached to the bearing platform 101, the periphery of the bipolar plate assembly is tightly attached to the movable limiting part 103 and the fixed limiting part 102, then placing a guide plate on the bipolar plate assembly, the periphery of the guide plate is tightly attached to the movable limiting part 103 and the fixed limiting part 102, then placing an upper pressing plate 104 and a pressing block to tightly press the guide plate and the bipolar plate assembly, so that the guide plate and the bipolar plate assembly are uniformly and tightly attached on the whole plane, welding and fixing the guide plate and the bipolar plate assembly together by a laser welding device, taking down the pressing block 105 and the pressing plate 104 after the surface is welded and assembled, then turning the semi-finished product over and placing the semi-finished product on the bearing platform 101 between the movable limiting part 103 and the, then another guide plate is placed on the bipolar plate assembly, then the upper pressing plate 104 and the pressing block 105 are placed, the laser welding device works again to weld and fix the guide plate and the bipolar plate assembly together, and finally the flow battery unit is obtained.

As shown in fig. 2-11, the sealing plate assembling system includes a welding system 1, a press-fitting fixture 2, an assembling table 3, a sealing plate welding tool and a 7-converging nozzle welding tool; press fitting jig 2 be used for the centre gripping to compress tightly pile 4 of stacked structure, press fitting jig 2 holding the pile is placed on assembly bench 3, welding system 1 include controller 11, removal subassembly 12 and welding subassembly 13, controller 11 control removal subassembly 12 drive welding subassembly 13 and remove and carry out the welding assembly of shrouding 6 with pile 4 to on the assembly bench 3, controller 11 package main control unit and man-machine interface etc. move the subassembly and drive the welding subassembly under the control of controller and weld the line, automatic with shrouding welded connection to pile on the side.

In order to further improve the assembly efficiency, the moving component 12 and the welding component 13 are provided with a plurality of groups to simultaneously perform welding assembly of sealing plates on the electric pile 4, or simultaneously perform welding connection of sealing plates on the same side of the electric pile 4, or simultaneously perform welding connection of sealing plates on different sides of the electric pile 4, in this embodiment, a mode of simultaneously performing welding connection of sealing plates on different sides of the electric pile 4 is preferably adopted, specifically, two groups of moving components 12 and welding components 13 are provided, and the two groups of moving components 12 and welding components 13 are distributed on two opposite sides of the electric pile, the two moving components 12 respectively drive the welding components 13 connected therewith to simultaneously perform welding assembly on two opposite sides of the electric pile 4, in this embodiment, the moving components 12 adopt a mechanical arm, the welding components 13 are a laser welding mechanism, and the moving components 12 drive the welding components 13 to perform pressure welding during the welding process, welding set 13 exerts pressure to the welding department promptly so that the shrouding hugs closely the side of pile 4 to ensure that the shrouding can be in the same place with the stable welding in pile side, improve shrouding assembly precision, improve the leakproofness of assembly, avoid appearing the situation that electrolyte infiltration leaked.

In this embodiment, the assembly table 3 mainly includes the base 31 and rotates the revolving stage 32 that sets up on the base 31, the revolving stage 32 on be provided with along rotating circumferential ring gear, actuating mechanism drives the revolving stage 32 through the gear with ring gear meshing and rotates, the pressure equipment anchor clamps 2 that are holding the galvanic pile 4 place in on the revolving stage 32 to carry on spacingly through positioning mechanism 5 between pressure equipment anchor clamps 2 and the revolving stage 32, ensure the precision that pressure equipment anchor clamps 2 placed on the revolving stage 32, also avoid the revolving stage 32 to take place relative displacement between pressure equipment anchor clamps 2 and the revolving stage 32 in the rotation process simultaneously, further can also avoid the in-process galvanic pile of welding assembly to take place the aversion, guarantee galvanic pile position is stable all the time, thereby guarantee the welding assembly precision of shrouding.

Specifically, the positioning mechanism 5 includes positioning pins and positioning holes matched with the positioning pins, the positioning pins are disposed on the press-fitting jig 2, the positioning holes are disposed on the rotary table 32, and two sets of positioning holes are disposed on the rotary table 32, when the press-fitting jig 2 holding the stack 4 is respectively matched with the two sets of positioning holes, the stack 3 faces different directions, and the two directions are perpendicular to each other, specifically, as shown in fig. 3 and 4, the press-fitting jig 2 is rectangular as a whole, the stack 4 held in the press-fitting jig 2 is also rectangular, that is, the side of the stack to be assembled with the seal plate includes long sides and short sides, the positioning pins are disposed in the diagonal direction of the press-fitting jig 2, correspondingly, the positioning holes matched with the positioning pins are disposed on the rotary table, and the first set of positioning holes on the rotary table enables the long sides of the stack on the press-fitting jig 2 to face the welding, the second group of positioning holes on the rotary table enable the short edge of the galvanic pile on the press-fitting fixture 2 to face the welding machining device, so that the galvanic pile can reach an accurate position under the condition that the rotary table does not rotate, and the machining precision and quality of the sealing plate are guaranteed.

In this embodiment, a locking mechanism 33 for locking the turntable 2 after the turntable 32 rotates in place is further disposed between the base 31 and the turntable 32, so as to further ensure the accuracy of positioning the turntable, and avoid the turntable from shifting during the assembly process of the sealing plate, the locking mechanism 33 includes a plurality of telescopic pin assemblies 331 and locking portions 332, at least one of the telescopic pin assemblies 331 and the locking portions 332 is spaced apart from each other along the rotation circumference of the turntable 32, the telescopic pin assemblies 331 are disposed on the base 31, the locking portions 332 are disposed on the turntable 32, specifically, the locking portions 332 are V-shaped grooves, the telescopic pin assemblies 331 include wedge-shaped pin heads matched with the V-shaped grooves, and when the wedge-shaped pins are inserted into the V-shaped grooves, the inclined surfaces of the V-shaped grooves and the wedge-shaped pin heads can push the turntable, so that the turntable slightly rotates to reach a high-accuracy position, the galvanic pile can reach the accurate orientation, thereby improving the precision of the sealing plate assembly.

As shown in fig. 5, the press-fitting jig 2 includes a tie bar assembly 22 and two clamping plates 21 parallel to each other, the clamping plates 21 are provided with connecting seats 23 extending to the outer sides of the edges of the clamping plates 21, the clamping plates 21 are rectangular, the connecting seats 23 are respectively provided at four vertex angles of the clamping plates 21, the connecting seats are fixed on the clamping plates in a welding manner, two ends of the tie bar assembly 22 are respectively connected with the connecting seats 23 on the two clamping plates 21, so that the two clamping plates 21 can move oppositely to realize a pressing function, specifically, the clamping plates 21 are parallel to battery units and diaphragms in the stack 4, that is, the clamping plates 21 are perpendicular to the stacking direction of the stack 4, the clamping plates 21 are respectively provided at two sides of the stacking direction of the stack 4, the two clamping plates 21 press and fix the stack 4 located between the clamping plates under the action of the tie bar assembly 22, the tie bar assembly 22 is along the stacking direction of, the pull rod assembly 22 specifically include pull rod and nut, the pull rod be sharp shaft-like to one end is provided with the spacing cap portion that peripheral dimension is greater than the pull rod diameter, the other end is provided with the screw thread section, the spacing cap portion card of pull rod one end is on the connecting seat of a clamp plate, the other end of pull rod is then card on the connecting seat of another clamp plate behind the nut on the suit, through revolving the nut in order to pull in two clamp plates, thereby it is fixed to compress tightly the pile that will be located between two clamp plates, and, offer at the edge of connecting seat 23 with pull rod assembly 22 complex breach groove 24, pull rod assembly 22's pull rod along splint 21 the plane direction card go into the breach groove can, improve pull rod assembly 22's the convenience of installing and removing.

In this embodiment, the surface of the side of the clamping plate 21, which faces away from the cell stack 4, is further provided with three reinforcing bars 25, the three reinforcing bars 25 are arranged in parallel at intervals, the structural strength of the pressing plate is improved, and the smoothness of the pressing plate is improved, so that the battery units and the diaphragms which are laminated together can be uniformly and tightly attached to each other on the whole plane, and the laminating assembly quality is improved.

The area of the sealing plate is larger than that of the welding area, after the welding assembly is completed, the part of the sealing plate which is not in the welding area needs to be removed, when the welding assembly of the sealing plate is implemented, a welding assisting layer is attached to one side, facing the electric pile, of the sealing plate 6, then the sealing plate 6 is pre-fixed to the side face of the electric pile 4, the edge of the sealing plate 6 can be temporarily fixed to the electric pile or a press-fitting clamp 2 in a mode of an adhesive tape and the like, then a controller 11 controls a moving assembly 12 to drive a welding assembly 13 to weld a plurality of spaced pre-connection welding wires on the sealing plate 6, as shown in figure 6, specifically, three pre-connection welding wires 8 along the straight line segment of the transverse routing can be adopted, and the three pre-connection welding wires are distributed at intervals in the vertical direction, so as to further pre-fix the sealing plate on the electric pile, then the controller 11 controls the moving assembly 12 to drive the welding assembly 13 to route the sealing plate 6 and, welding subassembly 13 exerts pressure to shrouding 6 so that shrouding 6 hugs closely the side of pile 4 in the welding department under the effect of removing subassembly 12, it specifically can be from the welding of transversely walking the line from left to right from welding area's upper left corner "0" position to remove subassembly 12 drive welding subassembly 13 the way of walking, form a straight line bonding wire, then welding subassembly 13 downward displacement certain distance carries out the welding of transversely walking the line from left to right once more and forms a second straight line bonding wire, the welding connection of whole face is realized to reciprocating like this, the distance of two adjacent straight line bonding wires is 0.5 ~ 2 mm.

In order to improve the welding assembly quality of the sealing plate 6, a pressing mechanism 7 for pressing the sealing plate 6 against the electric pile 4 may be connected to the edge of the clamping plate 21, specifically, the pressing mechanism 7 includes a pressing plate 71 and a transparent plate 72, the sealing plate 6, the transparent plate 72 and the pressing plate 71 are sequentially disposed from the side surface of the electric pile 4 to the outside, the transparent plate 72 covers the whole sealing plate 6, a screw hole is formed in the edge of the clamping plate 21, the pressing plate 71 is screwed with the edge of the clamping plate 21, the pressing plate 71 presses the edge of the transparent plate 72 to enable the transparent plate 72 to press and attach the sealing plate 6 against the side surface of the electric pile, the pressing plate 71 may be a plurality of sheets covering the edge of the transparent plate 72 for a short distance, the pressing plate 71 may also be a frame-shaped structure covering the whole edge of the transparent plate 72, a hollow area in the middle of the frame-shaped structure is a welding area of the sealing plate, and the pressing mechanism 7 can further ensure, the welding assembly quality of shrouding is improved, ensures that the banding all with pile zonulae occludens on the whole face, improves the assembly leakproofness, effectively avoids the situation that electrolyte leakage infiltration appears in the flow cell, and the laser of welding subassembly 13 can directly pass transparent plate 72 then be used in on the shrouding for the welding layer melting of helping between shrouding and the pile is in the same place shrouding and pile welding.

After the sealing plate is welded, a converging nozzle 20 needs to be welded, and the converging nozzle 20 is arranged on the sealing plate 6 with the converging port. In order to improve the welding assembly quality of the converging nozzle 20, a converging nozzle welding tool can be further arranged. The confluence nozzle welding tool comprises a frame-shaped confluence nozzle press-fitting mold 404, wherein a confluence nozzle press-fitting light-transmitting layer I409 made of light-transmitting materials is fixed on the confluence nozzle press-fitting mold 404; the bus nozzle press-fitting light-transmitting layer I409 and the bus nozzle press-fitting mold 404 can be fixed in a clamping, bonding and other modes, and the application is not limited. A confluence nozzle press-fitting light-transmitting layer II405 made of light-transmitting materials is arranged behind the confluence nozzle press-fitting mold 404; a hollow part matched with the shape of the electrolyte cavity of the confluence nozzle 20 is arranged on the confluence nozzle press-fitting light-transmitting layer II 405; the converging nozzle press-fitting mold 404 is fixed on the stack press-fitting jig 2.

The manifold nozzle press-fitting mold 404 is preferably square in this embodiment because the manifold nozzle 20 itself is also rectangular. Of course, the manifold nozzle pressing mold 404 may have other shapes as long as the pressing and positioning functions are achieved.

The manifold nozzle press-fitting light-transmitting layer II405 is divided into two, i.e., a left and a right, and is connected and positioned with the manifold nozzle press-fitting mold 404 by bolts 406. The hollow part 451 on the light transmission layer II405 of the confluence nozzle is rectangular and is matched with the shape of the electrolyte cavity of the confluence nozzle 20. The upper portion of the converging nozzle press-fitting light transmission layer II405 is provided with a screw hole, and the edge of the lower portion of the converging nozzle press-fitting light transmission layer II is provided with a bolt groove, so that assembly is facilitated. To facilitate demolding, the four corners of the cutout 451 may be reamed.

For the material selection, in this embodiment, the manifold nozzle press-fitting mold 404 is made of aluminum alloy, the manifold nozzle press-fitting light-transmitting layer I409 is made of glass, and the manifold nozzle press-fitting light-transmitting layer II405 is made of acryl or other transparent organic polymer plastics.

During operation, the converging nozzle press-fitting light-transmitting layer I409 is embedded into the converging nozzle press-fitting mold 404 and fixed, then a bolt hole in the bottom of the converging nozzle press-fitting mold 404 is penetrated by a bolt 406, the bolt is screwed into the pile press-fitting fixture 2, and a gap is reserved in the middle. And the back of the bottom plate of the confluence nozzle 20 is coated with the soldering flux. Then, the manifold nozzle 20 is inserted into the manifold nozzle press-fitting light-transmitting layer II405 and placed in the gap of the manifold nozzle press-fitting mold 404. The manifold nozzle is press-fitted with bolt slots 410 at the bottom of the light transmitting layer II405 and bolts at the bottom thereof. The upper bolts sequentially pass through the converging nozzle press-fitting mold 404 and the screw holes 408 in the converging nozzle press-fitting light-transmitting layer II405, and all the bolts 406 are screwed down. Note that the electrolyte chamber of the manifold 20 is clamped in the hollow 451 of the light-transmitting layer II 405. The pressure is transmitted to the confluence nozzle 20 through the confluence nozzle press-fitting mold 404, the confluence nozzle press-fitting light-transmitting layer I409 and the confluence nozzle press-fitting light-transmitting layer II405, pre-pressure is provided for the confluence nozzle 20, so that the welding-assisting layer of the bottom plate of the confluence nozzle 20 is in close contact with the sealing plate 6, the welding-assisting layer is heated and melted during welding, the surfaces of the sealing plate 6 and the bottom plate of the confluence nozzle 20 are melted and softened, and the welding-assisting layer and the bottom plate of the confluence nozzle 20 are tightly.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.

Claims

1. A vanadium redox flow galvanic pile assembly system is characterized in that: the device comprises a galvanic pile unit assembling jig for assembling galvanic pile units and a sealing plate assembling system for assembling galvanic pile sealing plates; the sealing plate assembling system comprises a welding system, a press-fitting clamp, an assembling table, a sealing plate welding tool and a converging nozzle welding tool; the welding system comprises a controller, a moving assembly and a welding assembly, wherein the controller controls the moving assembly to drive the welding assembly to move so as to weld and assemble the sealing plate on the electric pile on the assembly table.

2. The vanadium redox flow galvanic stack assembly system of claim 1, wherein: the electric pile unit assembling jig comprises a bearing platform and a limiting assembly arranged on the bearing platform, wherein the limiting assembly comprises a fixed limiting part and a movable limiting part, the fixed limiting part is fixedly arranged on the bearing platform, the movable limiting part is movable and adjustable along the surface of the bearing platform in the direction towards the fixed limiting part, and a part to be processed is limited between the fixed limiting part and the movable limiting part.

3. The vanadium redox flow galvanic stack assembly system of claim 2, wherein: the fixed limiting part comprises two mutually vertical limiting strips, two groups of movable limiting parts are arranged and are respectively matched with one limiting strip, and the movable limiting parts are movably adjustable in the direction vertical to the limiting strips; the movable limiting part comprises a push plate and a telescopic driving mechanism for driving the push plate to move.

4. The vanadium redox flow galvanic stack assembly system of claim 2, wherein: the processing fixture comprises a fixed limiting part, a movable limiting part and a pressing plate, wherein the fixed limiting part is used for limiting the position of a workpiece to be processed; the machining tool further comprises a pressing block, and the pressing block is used for being placed on the top surface of the pressing plate covering the part to be machined.

5. The vanadium redox flow galvanic stack assembly system of claim 1, wherein: the press-fitting clamp comprises a pull rod assembly and two clamping plates which are parallel to each other, a connecting seat extending out of the edge of each clamping plate is arranged on each clamping plate, a plurality of connecting seats are arranged on the edges of the clamping plates in the whole circumferential direction at intervals, and two ends of the pull rod assembly are connected with the connecting seats on the two clamping plates respectively, so that the two clamping plates can be located between the clamping plates, and the pile of the clamping plates perpendicular to the stacking direction is pressed and fixed.

6. The vanadium redox flow galvanic stack assembly system of claim 5, wherein: the edge of at least one of the clamping plates is also connected with a limiting stopper perpendicular to the pressing plate, and the limiting stopper is used for limiting and aligning the edge of the electric pile; the limiting stopper comprises a limiting baffle and a limiting barrier strip, the limiting baffle is positioned at the edge of the long edge of the rectangular pressing plate and covers the length of the whole long edge, and the limiting barrier strip is positioned at the edge of the short edge of the clamping plate and covers the local length of the short edge.

7. The vanadium redox flow galvanic stack assembly system of claim 6, wherein: a groove is formed in one side, facing the electric pile, of the limiting barrier strip, a top strip is arranged in the groove, a screw hole communicated with the groove is formed in one side, facing away from the electric pile, of the limiting barrier strip, and a pushing bolt device is arranged in the screw hole to push the top strip to enable the edges of the electric pile to be aligned; and one side of the limiting barrier strip, which is back to the galvanic pile, is provided with a through hole communicated to the groove, and a connecting rod connected with the top strip penetrates through the through hole.

8. The vanadium redox flow galvanic stack assembly system of claim 1, wherein: the assembly table comprises a base and a rotary table rotatably arranged on the base, and a press-fitting clamp for clamping the galvanic pile is placed on the rotary table; the locking mechanism is characterized in that a locking mechanism for locking the rotary table after the rotary table rotates in place is further arranged between the base and the rotary table, the locking mechanism comprises a telescopic pin assembly and a locking part, at least one of the telescopic pin assembly and the locking part is provided with a plurality of parts at intervals along the rotation circumference of the rotary table, the telescopic pin assembly is arranged on the rotary table or the base, and the locking part is arranged on the other of the rotary table and the base.

9. The vanadium redox flow galvanic stack assembly system of claim 1, wherein: the sealing plate welding tool comprises a frame-shaped sealing plate press-fitting die and a sealing plate press-fitting light-transmitting layer made of a light-transmitting material; shrouding, shrouding pressure equipment euphotic layer and shrouding pressure equipment mould set gradually outwards from the side of pile, shrouding pressure equipment euphotic layer cover whole shrouding, shrouding pressure equipment mould and pressure equipment anchor clamps edge spiro union, shrouding pressure equipment mould push down the edge of shrouding pressure equipment euphotic layer so that shrouding pressure equipment euphotic layer sticiss the laminating at the pile side with the shrouding.

10. The vanadium redox flow galvanic stack assembly system of claim 1, wherein: the converging nozzle welding tool comprises a frame-shaped converging nozzle press-fitting mold, and a converging nozzle press-fitting light-transmitting layer I made of light-transmitting materials is fixed on the converging nozzle press-fitting mold; a confluence nozzle press-fitting euphotic layer II made of a euphotic material is arranged behind the confluence nozzle press-fitting mould; a hollow part matched with the shape of the electrolyte cavity of the confluence nozzle is arranged on the confluence nozzle press-fitting euphotic layer II; and the converging nozzle press-fitting mold is fixed on the electric pile press-fitting clamp.