Flow battery stack assembly line

Abstract

The application provides a kind of liquid flow battery stack assembly line, comprising: material table station;Single cell stacking station, provided with single cell stacking device, for each material in material placing device is stacked to form single cell according to preset order;Stack stacking station, provided with battery stack stacking device, for outer end plate, insulating plate, end frame, current collector plate and stacked single cell are stacked to form stack assembly according to preset order;Fastener assembly station;Stack pressing station, provided with stack pressing device;Speed chain mechanism;Stack jig mechanism, the stacking of single cell and stack assembly is all in stack jig mechanism, and stack jig mechanism can be placed on speed chain mechanism to transfer single cell and / or stack assembly between each station.The application can greatly reduce labor intensity, improve assembly efficiency and assembly quality, and is conducive to ensuring the product production consistency of stack.

Description

Technical Field

[0001] This invention relates to the field of flow battery assembly equipment technology, and more specifically to a flow battery stack assembly line. Background Technology

[0002] A flow battery stack is mainly assembled from components such as an outer end plate, insulating plate, end frame, current collector, and multiple individual cells. Each individual cell consists of a plate frame, bipolar plates, a separator, gaskets, and carbon felt. The plate frame and carbon felt are typically pre-assembled into a plate-frame-carbon-felt assembly before being assembled with the bipolar plates, separator, and gaskets to form the aforementioned individual cell. Currently, battery stack assembly mainly relies on manual assembly, which presents the following problems: 1) It requires a large number of assembly personnel, resulting in high labor costs; 2) Manual assembly cannot guarantee product consistency, affecting product quality; 3) Manual assembly poses safety hazards; 4) Manual assembly is inefficient, impacting production efficiency and hindering automated production. Summary of the Invention

[0003] The flow battery stack assembly line designed in this invention can at least partially solve the above problems.

[0004] The purpose of this invention is to provide a flow battery stack assembly line, comprising:

[0005] The material station is equipped with a material placement device for placing the various materials used to assemble a single battery.

[0006] The single-battery stacking station is equipped with a single-battery stacking device, which is used to stack the materials in the material placement device in a preset order to form a single battery.

[0007] The battery stacking station is equipped with a battery stacking device, which is used to stack the outer end plate, insulating plate, end frame, current collector plate and the stacked single battery in a preset order to form a battery stack assembly.

[0008] Fastener assembly station, where the battery stack assembly formed in the battery stack assembly station is pre-fastened with fasteners;

[0009] The fuel cell stack pressing station is equipped with a fuel cell stack pressing device, which is used to press the fuel cell stack assembly down to the target thickness and then lock the fasteners.

[0010] A double-speed chain mechanism is used to transfer the single cell and / or the stack assembly between various workstations;

[0011] The battery stack fixture mechanism is located within which the single cells and the stack assembly are stacked, and the battery stack fixture mechanism can be placed on the double-speed chain mechanism to transfer the single cells and / or the stack assembly between various stations.

[0012] In some embodiments,

[0013] The electric pile jig mechanism comprises a jig base plate and a stacking plate, the top surface of the jig base plate has a boss protruding upward, the outer peripheral edge of the stacking plate is provided with a plurality of accommodating counterbores, each of the accommodating counterbores corresponds to each fastener arrangement position of the electric pile, and the stacking plate is supported on the boss.

[0014] In some embodiments,

[0015] The outer periphery of the vertical wall of the boss is provided with a bearing flange, the stacking plate has a hollow through hole, the stacking plate is sleeved on the outer peripheral wall of the boss through the hollow through hole, and is supported on the top surface of the bearing flange, so that each of the accommodating counterbores and the top surface of the jig base plate form a suspended space.

[0016] In some embodiments,

[0017] A plurality of positioning rods are arranged around the boss, the bottom end of each positioning rod is detachably connected with the jig base plate, and each positioning rod is arranged in one-to-one correspondence with the positioning groove of the electric pile assembly and / or the outer peripheral wall of the single cell; and / or,

[0018] Rollers are arranged at the four corner positions of the jig base plate; and / or,

[0019] A support arm passing groove is formed on the top surface of the boss, the support arm passing groove penetrates through the boss in a first direction, and the groove bottom of the support arm passing groove is lower than the top surface of the bearing flange.

[0020] In some embodiments, the electric pile pressing station is further provided with:

[0021] A positioning rod removal station for removing each positioning rod in the electric pile jig mechanism entering the station;

[0022] An electric pile overturning station for overturning the electric pile assembly in the electric pile jig mechanism entering the station from the positioning rod removal station by 90°;

[0023] The speed multiplier chain mechanism is further used for transferring the electric pile jig mechanism from the positioning rod removal station to the electric pile overturning station.

[0024] In some embodiments,

[0025] The single cell stacking device comprises a manipulator and a first rack, the first rack is provided with a first lifting mechanism, the first lifting mechanism has at least three spaced parallel support arms, wherein the middle support arm can be inserted into the support arm running groove, and the two side support arms can be inserted into the gap between the positioning rod and the boss to jointly form the lifting of the stacking plate, the manipulator is used to take the corresponding materials from the material placing device according to the stacking sequence of the single cell and place them on the top surface of the stacking plate.

[0026] In some embodiments,

[0027] After the corresponding materials are placed on the stacking plate, the first lifting mechanism lowers the thickness of the materials so that the top surface height after the materials is the same as the top surface height when the materials are not placed; and / or,

[0028] The first lifting mechanism is also provided with a first position detection component, which is in the upper area of the first lifting mechanism to detect the position of the materials placed on the stacking plate each time.

[0029] In some embodiments,

[0030] The material placing device comprises a plate and frame assembly material table, a diaphragm and bipolar plate material table, and a gasket material table, and the manipulator is used to transfer the plate and frame assembly on the plate and frame assembly material table, the diaphragm and bipolar plate on the diaphragm and bipolar plate material table, and the gasket on the gasket material table to the single cell stacking device.

[0031] In some embodiments,

[0032] The diaphragm and bipolar plate material table comprises a second rack and a diaphragm trolley and a bipolar plate trolley that can be combined and matched,

[0033] The second rack is provided with a diaphragm grabbing mechanism, a diaphragm deviation correction platform, a diaphragm and paper material frame, and a visual detection component corresponding to the diaphragm trolley, wherein: the diaphragm grabbing mechanism is used to transfer the diaphragm on the diaphragm trolley to the diaphragm deviation correction platform, the visual detection component is used to detect the position and quality defects of the diaphragm on the diaphragm deviation correction platform, when the diaphragm has quality defects or position deviation exceeds the correction range, the diaphragm grabbing mechanism is also used to transfer the diaphragm with quality defects or position deviation on the diaphragm deviation correction platform and the diaphragm paper on the diaphragm trolley to the diaphragm and paper material frame, when the visual detection component detects that the diaphragm meets the requirements, the manipulator is used to transfer the diaphragm on the diaphragm deviation correction platform to the single cell stacking device; and / or,

[0034] The second rack is provided with a bipolar plate grabbing mechanism and a bipolar plate deviation rectifying platform corresponding to the bipolar plate material vehicle, the bipolar plate grabbing mechanism is used for transferring the bipolar plate on the bipolar plate material vehicle to the bipolar plate deviation rectifying platform, the bipolar plate deviation rectifying platform has a rectangular outer edge, baffles are arranged on two adjacent straight edges of the outer edge respectively, and extendable deviation rectifying mechanisms are arranged on the other two adjacent straight edges of the outer edge respectively, and the extension direction of each deviation rectifying mechanism is perpendicular to the corresponding straight edge.

[0035] In some embodiments,

[0036] The stack pressing device comprises a press machine, the press machine comprises a base module and a pressing module which are oppositely arranged, the speed change chain mechanism has two parallel and spaced first chain segments which pass through the pressing module and the base module, the base module has a supporting platform which is protruded towards the side of the pressing module, the supporting platform is in the space between the two first chain segments, the bottom surface of the first chain segment is provided with a second lifting mechanism, the second lifting mechanism is used for controlling the first chain segment to descend below the top surface of the supporting platform when the stack is pressed, and the first chain segment is controlled to rise flush with other chain segments of the speed change chain mechanism when the stack is not pressed.

[0037] The flow battery stack assembly line of the application comprises:

[0038] The flow battery stack assembly line is composed of various component devices in the material table station, the single cell stacking station, the stack stacking station, the fastener assembly station and the stack pressing station, so as to realize the automatic operation of the single cell and the stack stacking, and the mechanical and flow-line transfer of the materials between the various stations is realized by the stack jig mechanism and the speed change chain mechanism, which can greatly reduce the labor intensity, improve the assembly efficiency and assembly quality, and is beneficial to guarantee the product production consistency of the stack. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a general structure schematic diagram of the flow battery stack assembly line of the application.

[0040] Figure 2 It is a sectional view of the single cell stacking device in Figure 1

[0041] Figure 3 It is a partial enlarged view of A in Figure 2

[0042] Figure 4 It is a sectional view of the single cell stacking device in Figure 1

[0043] Figure 5 ​​​is Figure 1 is a perspective view of the stacker of the electric pile in the electric pile stacker.

[0044] Figure 6 is Figure 1 is a perspective view of the fastener assembly station in the electric pile stacker.

[0045] Figure 7 is Figure 1 is a perspective view of the electric pile presser in the electric pile stacker.

[0046] Figure 8 is a perspective view of the electric pile jig mechanism of the present application.

[0047] in the figure:

[0048] 1, material table station; 11, plate frame assembly material table; 12, diaphragm and bipolar plate material table; 121, second rack; 122, diaphragm trolley; 123, diaphragm grabbing mechanism; 124, diaphragm deviation correction platform; 1241, suction cup; 125, visual detection component; 126, diaphragm paper frame; 127, bipolar plate trolley; 128, bipolar plate grabbing mechanism; 129, bipolar plate deviation correction platform; 1291, baffle; 1292, deviation correction mechanism; 13, gasket material table; 2, single cell stacking station; 21, manipulator; 22, first rack; 23, first lifting mechanism; 231, support arm; 24, first position detection component; 3, electric pile stacking station; 31, gantry; 32, three-axis module; 33, grabbing component; 4, fastener assembly station; 41, first jacking and transplanting mechanism; 5, electric pile pressing station; 51, press; 52, second lifting mechanism; 6, positioning rod removal station; 61, second jacking and transplanting mechanism; 7, electric pile turnover station; 71, third rack; 72, turnover mechanism; 8, speed chain mechanism; 81, first chain segment; 9, electric pile jig mechanism; 90, jig bottom plate; 901, boss; 902, support arm passage groove; 903, roller; 91, stacking plate; 911, accommodating counterbore; 92, positioning rod. DETAILED DESCRIPTION

[0049] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example embodiments to those skilled in the art. In the drawings, the thickness of regions and layers can be exaggerated for clarity. Like reference numerals in the drawings denote like elements, and so detailed descriptions thereof will be omitted.

[0050] The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application can be practiced without one or more of the specific details, or with other methods, components, materials, etc. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the application.

[0051] The following described embodiment is a flow battery stack assembly line of the present application, which is only a part of the embodiments of the present application, but the protection scope of the present application is not limited to this. All other embodiments obtained by those skilled in the art without creative labor should be covered within the protection scope of the present application.

[0052] Please refer to Figures 1 to 8 According to the embodiments of the present application, referring to Figure 1 The flow battery stack assembly line is provided, comprising:

[0053] A material table station 1, also referred to as section one, is provided with a material placing device for placing materials for assembling single cells. Specifically, the materials include a plate frame, bipolar plates, a diaphragm, a gasket, and carbon felt, etc. The plate frame and the carbon felt are pre-assembled to form a plate frame assembly. The plate frame assembly can be assembled manually or preferably assembled by a corresponding pre-assembly line to improve the assembly efficiency and quality.

[0054] A single cell stacking station 2, also referred to as section two, is provided with a single cell stacking device for stacking the materials in the material placing device in a predetermined order to form a single cell, i.e., the single cell in the stack is assembled at this station. The predetermined order corresponds to the stacking order of the components of the single cell, which is well known and will not be described here.

[0055] A stack stacking station 3, also referred to as section three, is provided with a stack stacking device for stacking an outer end plate, an insulating plate, an end frame, a current collecting plate, and the single cell formed by stacking in a predetermined order to form a stack assembly. The predetermined order corresponds to the stacking order of the components of the stack, which is well known and will not be described here.

[0056] A fastener assembly station 4, also referred to as section four, is provided for pre-tightening the stack assembly formed by the stack stacking station using fasteners. The fasteners typically include nuts, studs, corresponding lock washers, and flat washers, etc. The pre-tightening means that the fasteners are screwed in a connecting relationship with a certain torque, but the torque is not the final target torque.

[0057] The electric pile pressing station 5, also referred to as station five, is provided with an electric pile pressing device for locking the fasteners after the electric pile assembly is pressed to the target thickness, that is, the screwing torque of the fasteners is screwed to the target torque at this time, to ensure the connection reliability of the electric pile stacking, and the pre-fastening and locking of the fasteners can be realized manually;

[0058] The speed chain mechanism 8 is used for transferring the single battery and / or the electric pile assembly between stations, which is a commonly used transfer mechanism in the industry, and the specific structure of the present application is not particularly protected, and will not be described here.

[0059] The electric pile jig mechanism 9 is used for transferring the single battery and / or the electric pile assembly between stations, which is a commonly used transfer mechanism in the industry, and the specific structure of the present application is not particularly protected, and will not be described here.

[0060] In the technical solution, the flow battery electric pile assembly line is composed of the material table station 1, the single battery stacking station 2, the electric pile stacking station 3, the fastener assembly station 4, and the electric pile pressing station 5, thereby realizing automatic operation of single battery and electric pile stacking, and the electric pile jig mechanism 9 and the speed chain mechanism 8 are used to mechanically and fluidly transfer the materials between stations, which can greatly reduce the labor intensity, improve the assembly efficiency and quality, and is beneficial to ensure the product production consistency of the electric pile.

[0061] Specifically referring to Figure 8 As shown, the electric pile jig mechanism 9 includes a jig bottom plate 90 and a stacking plate 91, the top surface of the jig bottom plate 90 has a boss 901 protruding upward, and the outer peripheral edge of the stacking plate 91 is provided with a plurality of accommodating counterbores 911. In the specific assembly process, the flat washer and spring corresponding to the bottom end of the electric pile can be sequentially placed in each accommodating counterbore 911 from bottom to top in advance, and then the outer end plate of the electric pile bottom end is placed on the stacking plate 91, which facilitates the stacking of the electric pile. The operation of pre-placing the fasteners in each accommodating counterbore 911 can be completed manually, each accommodating counterbore 911 corresponds to each fastener position of the electric pile, and the stacking plate 91 is supported on the boss 901. It can be understood that the accommodating counterbores 911 should be designed in diameter to achieve the purpose of supporting the flat washer and spring, and at the same time, the threaded studs and nuts should be able to smoothly pass through the hole.

[0062] In the technical scheme, the preset fasteners are arranged on the outer peripheral edge of the jig bottom plate 90 in the accommodating recess 911, which is beneficial to subsequent convenient fastening of the stack in the axial direction of the stack, beneficial to subsequent position stability of the stacked materials, and improves the rationality of the stack assembly sequence and the assembly efficiency.

[0063] With continued reference to Figure 8 As shown in the drawings, in a preferred embodiment, the outer periphery of the vertical wall of the boss 901 is provided with a bearing flange (not labeled in the drawings), that is, the flange protrudes outward along the horizontal direction of the vertical wall. The stacking plate 91 has a hollow through hole (not labeled in the drawings), and the stacking plate 91 is sleeved on the outer peripheral wall of the boss 901 through the hollow through hole and is supported on the top surface of the bearing flange, so as to form a suspended space between each accommodating recess 911 and the top surface of the jig bottom plate 90.

[0064] In the technical scheme, the stacking plate 91 is sleeved and supported on the bearing flange of the outer periphery of the boss 901 to form a suspended space between each accommodating recess 911 and the top surface of the jig bottom plate 90. The formation of the suspended space can facilitate the screwing operation of the operator on the nut and stud at the bottom end of the stack. Generally, the height of the suspended space is not less than 100 mm.

[0065] A plurality of positioning rods 92 are arranged around the boss 901. The bottom end of each positioning rod 92 is detachably connected with the jig bottom plate 90, and each positioning rod 92 is arranged in one-to-one correspondence with the positioning groove of the stack assembly and / or the outer peripheral wall of the single cell. As can be understood, each positioning rod 92 surrounds a space for preventing the single cell or the stack from being placed. Since the positioning rod 92 is arranged in one-to-one correspondence with the positioning groove of the stack assembly and / or the outer peripheral wall of the single cell, the placement of each material can be effectively guided to ensure the accuracy of the position of each material. In the technical scheme, the bottom end of each positioning rod 92 is detachably connected with the jig bottom plate 90, so that the placement position of each material is more accurate during the stacking of the stack or the single cell, and the positioning rod 92 can be removed after the stacking and pressing of the stack are completed, which is convenient for further processing of the battery stack.

[0066] For example, a plurality of positioning sleeves are formed on the jig bottom plate 90, the bottom end of each positioning rod 92 is inserted into each positioning sleeve, and the corresponding bolt can be tightened.

[0067] Rollers 903 are arranged at the four corner positions of the jig bottom plate 90 to prevent the side surface of the jig bottom plate from contacting the side surface of the speed-up chain mechanism 8, which causes poor operation.

[0068] The top surface of the boss 901 is formed with a support arm passing groove 902 penetrating through the first direction thereof, the groove bottom of the support arm passing groove 902 is lower than the top surface of the bearing flange, and the first direction is specifically the extension and contraction direction of the support arm on the corresponding component.

[0069] In the technical solution, the support arm passing groove 902 is arranged on the top surface of the boss 901, so that the support arm on the corresponding component can be placed below the stacking plate 91, and the height adjustment of the stacking plate 91 can be realized by controlling the lifting of the support arm.

[0070] Referring to Figure 1 As shown in the drawings, in some embodiments, after the stack pressing station 5, further comprising: a positioning rod removing station 6, also referred to as station six, for removing each positioning rod 92 in the stack jig mechanism 9 entering the station; a stack overturning station 7, also referred to as station seven, for overturning 90° the stack assembly in the stack jig mechanism 9 entering the station from the positioning rod removing station 6; and the multiple-speed chain mechanism 8 is further used for transferring the stack jig mechanism 9 from the positioning rod removing station 6 to the stack overturning station 7.

[0071] In the technical solution, the operator can remove each positioning rod 92 at the positioning rod removing station 6, and then the stack assembly after pressing after the positioning rod 92 is removed can be overturned 90° at the stack overturning station 7, so that the stack is switched from the stacking state to the use state, and the overturned stack assembly is directly separated from the stack jig mechanism 9, facilitating the subsequent transportation and use of the stack assembly.

[0072] Referring to Figure 1 As shown in the drawings, the stack overturning station 7 specifically includes a third rack 71 and an overturning mechanism 72, which can adopt various feasible structures, and in theory, as long as the stack can be smoothly switched from the stacking state to the use state.

[0073] Referring to Figure 4 As shown in the drawings, in some embodiments, the single cell stacking device comprises a manipulator 21 (see Figure 1The first lifting mechanism 23 is provided with at least three parallel support arms 231, and the middle support arm 231 can be inserted into the support arm through groove 902. The first lifting mechanism 23 is controlled to be in the low position, and the stacker jig mechanism 9 is driven by the speed chain mechanism 8 to approach the support arm 231, so that the central support arm 231 is in the support arm through groove 902, and the two side support arms 231 are inserted into the gap between the positioning rod 92 and the boss 901, to jointly form the lifting of the stacking plate 91. The robot 21 is used to take the corresponding material from the material placing device according to the stacking order of the single battery and place it on the top surface of the stacking plate 91.

[0074] In the technical solution, the first lifting mechanism 23 forms a lifting support for the stacking plate 91 in the stacker jig mechanism 9 through the support arms 231, thereby adjusting the height of the materials stacked on the stacking plate 91. When stacking the materials, the first lifting mechanism 23 can be controlled to be raised to the top end position of the positioning rod 92 of the stacker jig mechanism 9, so that the robot 21 can be displaced downward to reduce the assembly time and improve the stacking efficiency. It can be understood that if the stacking plate 91 and the materials stacked thereon are all at the bottom end position, the robot 21 will be displaced downward by a large distance (approximately the depth of the positioning rod 92) for each material placed, and the stacking efficiency is obviously lower. The robot 21 is preferably a commercially available six-axis robot.

[0075] In a more preferred embodiment, after the corresponding material is placed on the stacking plate 91, the first lifting mechanism 23 lowers the thickness of the material to make the top surface height after the material the same as the top surface height before the material is placed. That is, for each material placed in the stacker jig mechanism 9 at the work station, the first lifting mechanism 23 will detect and lower by a certain height through the corresponding sensor, so that the top surface height of the material after being placed is consistent with the top surface height before the material is placed. In this way, the assembly and placement position of the robot 21 at the single battery stacking work station is fixed and unchanged, which can simplify the control logic of the robot 21, and at the same time, the fixed and unchanged material placement position can help to ensure the stacking accuracy and thereby ensure the product quality.

[0076] In a preferred embodiment, the first lifting mechanism 23 is further provided with a first position detection component 24, which is located in the upper area of the first lifting mechanism 23 to detect whether the position of each material placed on the stacking plate 91 is accurate. Specifically, the position of the first position detection component 24 relative to the first lifting mechanism 23 is relatively fixed. Since the first lifting mechanism 23 will follow the thickness of each material placed to maintain the same height of the top surface, the first position detection component 24 can always detect the position of each material placed in the battery fixture mechanism 9 at the work station without being blocked or interfered by the stacked materials. Specifically, the first position detection component 24, for example, adopts an existing image recognition system (optical system) to determine whether the position of the placed material is accurate through the obtained picture, and when the position is incorrect, an alarm will be given to manually correct the material.

[0077] As shown in Figure 1 The material placing device includes a plate frame assembly material table 11, a separator and bipolar plate material table 12, and a gasket material table 13. The robot 21 is used to transfer the plate frame assembly on the plate frame assembly material table 11, the separator and bipolar plate on the separator and bipolar plate material table 12, and the gasket on the gasket material table 13 to the single cell stacking device.

[0078] In this technical solution, the materials for assembling each single cell are placed on the corresponding material table, and the robot 21 realizes the material grabbing, transferring, and placing in a large radius range, which is flexible and relatively compact. In a specific embodiment, the aforementioned plate frame assembly material table 11 is configured in two groups to improve the efficiency of the battery assembly. At this time, the robot 21 can be configured as two, so that the robot 21 corresponds to the plate frame assembly material table 11 one by one, which improves the production rhythm and further improves the production efficiency.

[0079] Specifically refer to Figure 2The diaphragm and bipolar plate material table 12 comprises a second rack 121 and a diaphragm stock car 122 and a bipolar plate stock car 127 capable of being combined and matched, the second rack 121 is provided with a diaphragm grabbing mechanism 123, a diaphragm deviation correction platform 124, a diaphragm paper stock frame 126 and a visual detection component 125 corresponding to the diaphragm stock car 122, wherein: the diaphragm grabbing mechanism 123 is used to transfer the diaphragm on the diaphragm stock car 122 to the diaphragm deviation correction platform 124, the visual detection component 125 is used to detect the position and quality defects of the diaphragm on the diaphragm deviation correction platform 124, when the diaphragm has quality defects or position deviation exceeds the correction range, the diaphragm grabbing mechanism 123 is also used to transfer the diaphragm with quality defects or position deviation on the diaphragm deviation correction platform 124 and the diaphragm paper on the diaphragm stock car 122 to the diaphragm paper stock frame 126, when the visual detection component 125 detects that the diaphragm meets the requirements (i.e. the position deviation does not exceed the correction range and there is no quality defect such as wrinkle), the manipulator 21 is used to transfer the diaphragm on the diaphragm deviation correction platform 124 to the single cell stacking device, the diaphragm grabbing mechanism 123 described above can adopt a common lifting clamp structure which has the functions of clamping, lifting and translating to achieve the purpose of lifting and transferring the diaphragm. The visual detection component 125 described above also adopts an image recognition system module.

[0080] In the technical scheme, the quality and position of the diaphragm can be detected in real time by the visual detection component 125, and when there is a quality defect such as wrinkle or the position deviation exceeds the correction range, the diaphragm with quality defects can be fed back to the corresponding component such as the grabbing mechanism 123 for NG treatment, thereby ensuring the assembly quality of the subsequent single cell. It should be noted that, in order to prevent the phenomenon of grabbing multiple diaphragms at the same time by the diaphragm grabbing mechanism 123 described above, in actual operation, diaphragm paper is placed between the diaphragms on the diaphragm stock car 122, and the diaphragm grabbing mechanism 123 of the application is also configured to transfer the diaphragm paper on the diaphragm stock car 122 to the diaphragm paper stock frame 126, thereby not affecting the subsequent use of the diaphragm.

[0081] The diaphragm deviation correction platform 124 described above is provided with a plurality of suction cups 1241, each suction cup 1241 is communicated with a vacuum component to form negative pressure, which can adsorb the diaphragm placed on the diaphragm deviation correction platform 124 to ensure the accurate and stable position.

[0082] For details, see Figure 3As shown, the second rack 121 is provided with a bipolar plate grabbing mechanism 128 and a bipolar plate deviation rectifying platform 129 corresponding to the bipolar plate trolley 127, wherein the bipolar plate grabbing mechanism 128 is used to transfer the bipolar plate on the bipolar plate trolley 127 to the bipolar plate deviation rectifying platform 129, the bipolar plate deviation rectifying platform 129 has a rectangular outer edge, two adjacent straight edges of the outer edge are respectively provided with baffles 1291, and the other two adjacent straight edges of the outer edge are respectively provided with retractable deviation rectifying mechanisms 1292, and the retractable direction of each deviation rectifying mechanism 1292 is perpendicular to the corresponding straight edge.

[0083] In the technical scheme, the bipolar plate deviation rectifying platform 129 is rectangular, the rectangle matches the outer contour of the bipolar plate, the position of the bipolar plate on the platform can be accurately adjusted through the retractable deviation rectifying mechanisms 1292 corresponding to the baffles 1291 on the two adjacent straight edges, the structure is simple and the adjustment is accurate. In a specific embodiment, the deviation rectifying mechanism 1292 can be a cylinder provided with a push plate at the free end of the extending rod.

[0084] It should be noted that the diaphragm trolley 122 and the bipolar plate trolley 127 in the application share one second rack 121, so that the diaphragm and the bipolar plate are arranged adjacent to each other, space is saved, and the structure is more compact.

[0085] Specifically referring to Figure 1 As shown, the stack pressing device comprises a press 51, the press 51 comprises a bottom base module (not marked in the figure) and a pressing module (not marked in the figure) opposite to each other, the bottom base module and the pressing module are necessary components of a traditional press, and the application does not particularly elaborate them, the speed change chain mechanism 8 has two parallel and spaced first chain segments 81 passing through the pressing module and the bottom base module, the bottom base module has a support platform protruding towards the side of the pressing module, the support platform is in the interval between the two first chain segments 81, the bottom surface of the first chain segment 81 is provided with a second lifting mechanism 52, the second lifting mechanism 52 is used to control the first chain segment 81 to descend below the top surface of the support platform during stack pressing, and control the first chain segment 81 to rise flush with other chain segments of the speed change chain mechanism 8 when the stack pressing is not performed.

[0086] In the technical scheme, the first chain segment 81 can be controlled to rise and fall individually according to the operation condition of the pressing device, thereby realizing perfect combination between the pressing device and the speed change chain mechanism 8, effectively preventing the interference and damage of the pressing device to the speed change chain mechanism 8, guaranteeing the technical requirement that the stack assembly line can be used for on-line stack pressing while the stack assembly is performed, enabling the pre-assembled stack assembly to be pressed without changing the site, and further improving the stack assembly efficiency.

[0087] Specifically referring to Figure 5 As shown, the stack assembly device comprises a gantry 31 arranged above the speed chain mechanism 8, which spans the left and right sides of the assembly line, and is provided with a three-axis module 32, which controls the transverse movement (translation perpendicular to the assembly line) and longitudinal movement (translation parallel to the assembly line) of the grabbing component 33. The grabbing component 33 has a lifting structure and is compatible with clamping and suction functions. When grabbing heavy materials such as outer end plates, the clamping mode is used to take materials, and when grabbing light materials (insulating plates, end frames, current collecting plates and gaskets), the suction mode is used to take materials, thereby realizing the sequential grabbing and placement of the materials of the electric stack.

[0088] Hereinafter, the working principle of the flow battery stack assembly line of the present application will be further described in conjunction with a specific embodiment.

[0089] First, the first lifting and transplanting mechanism 41 at the fourth station is actuated, the electric stack jig mechanism 9 enters the fourth station from the jig transfer trolley (not shown in the figure), the person puts the flat gasket and spring into the corresponding counterbore (i.e. the aforementioned accommodating counterbore 911, the same below) of the stacking plate 91 on the electric stack jig mechanism 9, and then the first lifting and transplanting mechanism 41 is reset. The electric stack jig mechanism 9 enters the third station with the speed chain mechanism 8, and the person operates the control box of the three-axis module 32 to control the three-axis module 32 to move to the specified position and grab the materials from the trolley by the grabbing component 33. The grabbing component 33 is compatible with clamping and suction functions. When grabbing heavy materials such as outer end plates, the clamping mode is used to take materials, and when grabbing light materials, the suction mode is used to take materials. After the materials are grabbed, they are moved to the electric stack jig mechanism 9 for assembly. After the bottom outer end plate, insulating plate, end frame and other assemblies are completed, the electric stack jig mechanism 9 enters the second station with the speed chain. The first lifting mechanism 23 at this station is actuated, and the stacking plate 91 on the electric stack jig mechanism is lifted to the single cell stacking position by the support arm 231 below the first lifting mechanism 23. At this time, the two robots 21 are actuated and grab the materials from the corresponding material table according to the set program, and then stack them according to the stacking order of the single cell materials. The stacking position is provided with a sensor, and the stacking platform is lowered by the height of one piece of material after each piece of material is stacked, so as to ensure that the robot places the material at the same height each time. At the same time, the first position detection component 24 located on the first rack 22 detects the position of each stacked material after each piece of material is stacked. When the position is incorrect, an alarm will be given to prompt manual correction of the material.

[0090] When the single cell stacking station 2 starts to work, the material table station 1 also starts to work, in which the diaphragm grabbing mechanism 123 grabs the diaphragm from the diaphragm material car 122 and places it on the diaphragm deviation rectification platform 124. At this time, the multiple groups of suction cups 1241 arranged below the diaphragm deviation rectification platform 124 act to adsorb the diaphragm on the diaphragm deviation rectification platform 124. Then, the visual detection component 125 acts to detect the position of the diaphragm and judge the quality defects such as diaphragm wrinkles. If defects such as wrinkles are found, the diaphragm will be judged as NG, and the NG diaphragm will be grabbed by the diaphragm grabbing mechanism 123 and placed into the diaphragm separator material frame 126. If the diaphragm is detected as normal, the visual detection component 125 will feed back the placement position of the diaphragm to the six-axis manipulator (i.e. the aforementioned manipulator 21), and the manipulator 21 will automatically grab the diaphragm correctly according to the feedback position. At the same time, in order to prevent the diaphragm grabbing mechanism 123 from grabbing multiple diaphragms, diaphragm paper is placed between the diaphragms on the diaphragm material car.

[0091] When the single cell stacking station 2 starts to work, the bipolar plate grabbing mechanism 128 on the material table station 1 also starts to act to grab the bipolar plate from the bipolar plate material car 127 and place it on the bipolar plate deviation rectification platform 129. Then, the cylinders arranged on both sides of the bipolar plate deviation rectification platform 129 (i.e. the aforementioned deviation rectification mechanism 1292) act to rectify the bipolar plate, so as to ensure that the position of the bipolar plate is accurate when the manipulator grabs.

[0092] When the battery stacking station starts to work, the gasket material table 13 on the material table station 1 also starts to act in correspondence with the mechanism. Since the mechanism of the gasket material table is similar to that of the diaphragm material table, the action sequence is also the same, which will not be described here.

[0093] When the single cell stacking station completes the stacking of the single cell number according to the set program, the first lifting mechanism 23 is lowered, the stacking plate 91 returns to the bottom of the stack fixture mechanism 9, and the stack fixture mechanism 9 enters the third station with the speed chain to complete the assembly of the top current collecting plate, end frame, insulating plate and outer end plate of the stack. Then the stack fixture mechanism 9 enters the fourth station with the speed chain, and the fourth station is manually sleeved with fasteners such as gaskets, springs, screw rods and nuts; after completion, the stack fixture mechanism 9 enters the fifth station with the speed chain, and the second lifting mechanism 52 at the fifth station is actuated to lower the speed chain at the fifth station position, and the stack fixture mechanism 9 is lowered to the top of the base of the press 51, and the press 51 starts to act, and the specified pressure and stroke are used to press the stack, and after the stack is pressed to the specified height, the nut is locked manually, and after completion, the press cylinder resets, the second lifting mechanism 52 resets, the stack fixture mechanism 9 enters the sixth station with the speed chain, and the lifting mechanism under the second lifting and transplanting mechanism 61 at the sixth station position is actuated to stop the stack fixture mechanism at the station, and then the positioning rod 92 above the stack fixture mechanism 9 is manually removed, and the second lifting and transplanting mechanism 61 resets; the stack fixture mechanism 9 enters the seventh station with the speed chain, and the turnover mechanism 72 at the seventh station position is actuated to realize the 90-degree turnover of the stack, and the turned stack is moved away using a forklift, the turnover mechanism 72 resets, the stack fixture mechanism 9 returns to the sixth station with the speed chain, and the second lifting and transplanting mechanism 61 at the sixth station is actuated, and the stack fixture mechanism 9 enters the stack fixture turnover vehicle from the sixth station, and then returns to the fourth station with the turnover vehicle to start the assembly of a new stack.

[0094] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A flow battery stack assembly line, characterized in that, include: The material station (1) is equipped with a material placement device for placing various materials for assembling single batteries; The single battery stacking station (2) is equipped with a single battery stacking device, which is used to stack the materials in the material placement device in a preset order to form a single battery. The battery stacking station (3) is equipped with a battery stacking device, which is used to stack the outer end plate, insulating plate, end frame, current collector and the stacked single battery in a preset order to form a battery stack assembly. Fastener assembly station (4), where the electric stack assembly formed in the electric stack assembly station is pre-fastened with fasteners; The fuel cell stack press-fitting station (5) is equipped with a fuel cell stack press-fitting device, which is used to press the fuel cell stack assembly down to the target thickness and then lock the fasteners; A double-speed chain mechanism (8) is used to transfer the single cell and / or the stack assembly between stations; The stack fixture mechanism (9) is used to house the stacked single cells and stack components. The stack fixture mechanism (9) can be placed on the double-speed chain mechanism (8) to transfer the single cells and / or the stack components between workstations. The stack fixture mechanism (9) includes a fixture base plate (90) and a stacking plate (91). The top surface of the fixture base plate (90) has an upwardly protruding boss (901). The outer periphery of the stacking plate (91) is provided with multiple recessed holes (911). Each of the accommodating countersunk holes (911) corresponds one-to-one with the fastener positions of the fuel cell stack. The stack plate (91) is supported on the boss (901). The outer periphery of the vertical wall of the boss (901) is provided with a bearing flange. The stack plate (91) has a hollow through hole. The stack plate (91) is fitted onto the outer periphery of the boss (901) through the hollow through hole and is supported on the top surface of the bearing flange, so that a suspended space is formed between each of the accommodating countersunk holes (911) and the top surface of the fixture base plate (90).

2. The flow battery stack assembly line according to claim 1, characterized in that, Multiple positioning rods (92) are arranged around the boss (901), the bottom end of each positioning rod (92) is detachably connected to the fixture base plate (90), and each positioning rod (92) is correspondingly arranged with a positioning groove on the outer peripheral wall of the fuel cell assembly and / or a single cell; and / or, The fixture base plate (90) is provided with rollers (903) at its four corners; and / or, A support arm through groove (902) is formed on the top surface of the boss (901) and extends along its first direction. The bottom of the support arm through groove (902) is lower than the top surface of the bearing flange.

3. The flow battery stack assembly line according to claim 2, characterized in that, Following the fuel cell stack pressing station (5) is also: The positioning rod removal station (6) is used to remove each positioning rod (92) inside the fuel cell jig mechanism (9) that has entered the station; The fuel cell stack flipping station (7) is used to flip the fuel cell assembly inside the fuel cell stack fixture mechanism (9) that has been moved from the positioning rod removal station (6) by 90°. The double-speed chain mechanism (8) is also used to transfer the fuel cell jig mechanism (9) from the positioning rod removal station (6) to the fuel cell flipping station (7).

4. The flow battery stack assembly line according to claim 2, characterized in that, The single-cell stacking device includes a robotic arm (21) and a first frame (22). The first frame (22) is provided with a first lifting mechanism (23). The first lifting mechanism (23) has at least three parallel support arms (231) spaced apart. The central support arm (231) can be inserted into the support arm through slot (902), and the two side support arms (231) can be inserted into the gap between the positioning rod (92) and the boss (901) to jointly form a lifting and lifting mechanism for the stacking plate (91). The robotic arm (21) is used to take the corresponding material from the material placement device according to the stacking order of the single cells and place it on the top surface of the stacking plate (91).

5. The flow battery stack assembly line according to claim 4, characterized in that, After a material is placed on the stacking plate (91), the first lifting mechanism (23) lowers the thickness of the material so that the height of the top surface behind the material is the same as the height of the top surface when the material is not placed; and / or, The first lifting mechanism (23) is also provided with a first position detection component (24), which is located in the area above the first lifting mechanism (23) to detect the position of the material placed on the stacking plate (91) each time.

6. The flow battery stack assembly line according to claim 4, characterized in that, The material placement device includes a plate and frame assembly material platform (11), a separator and bipolar plate material platform (12), and a gasket material platform (13). The robotic arm (21) is used to transfer the plate and frame assembly on the plate and frame assembly material platform (11), the separator and bipolar plate on the separator and bipolar plate material platform (12), and the gasket on the gasket material platform (13) into the single battery stacking device.

7. The flow battery stack assembly line according to claim 6, characterized in that, The diaphragm and bipolar plate material stage (12) includes a second frame (121) and diaphragm material cart (122) and bipolar plate material cart (127) that can be combined and matched with it. The second frame (121) is equipped with a diaphragm gripping mechanism (123), a diaphragm correction platform (124), a diaphragm paper frame (126), and a vision inspection component (125) corresponding to the diaphragm material cart (122). The diaphragm gripping mechanism (123) is used to transfer the diaphragm from the diaphragm material cart (122) to the diaphragm correction platform (124). The vision inspection component (125) is used to detect the position and quality defects of the diaphragm on the diaphragm correction platform (124). When the membrane has quality defects or its positional deviation exceeds the correction range, the membrane gripping mechanism (123) is also used to transfer the membrane with quality defects or positional deviation on the membrane correction platform (124) and the separator paper on the membrane material cart (122) to the membrane separator paper frame (126). When the vision inspection component (125) detects that the membrane meets the requirements, the robot arm (21) is used to transfer the membrane on the membrane correction platform (124) into the single-cell stacking device; and / or, The second frame (121) is provided with a bipolar plate gripping mechanism (128) and a bipolar plate correction platform (129) corresponding to the bipolar plate material cart (127). The bipolar plate gripping mechanism (128) is used to transfer the bipolar plates on the bipolar plate material cart (127) to the bipolar plate correction platform (129). The bipolar plate correction platform (129) has a rectangular outer edge. Baffles (1291) are respectively provided on two adjacent right-angled sides of the outer edge. Extension and retraction correction mechanisms (1292) are respectively provided on the other two adjacent right-angled sides of the outer edge. The extension and retraction direction of each correction mechanism (1292) is perpendicular to the corresponding right-angled side.

8. The flow battery stack assembly line according to claim 1, characterized in that, The fuel cell stack pressing device includes a press (51), which includes a base module and a pressing module facing each other. The speed-doubled chain mechanism (8) has two first chain segments (81) that pass through the pressing module and the base module in parallel intervals. The base module has a support platform that protrudes toward the pressing module. The support platform is located in the interval between the two first chain segments (81). The bottom surface of the first chain segment (81) is provided with a second lifting mechanism (52). The second lifting mechanism (52) is used to control the first chain segment (81) to descend below the top surface of the support platform when the fuel cell stack is being pressed, and to control the first chain segment (81) to rise to be flush with the other chain segments of the speed-doubled chain mechanism (8) when the fuel cell stack is not being pressed.

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