Electrolytic bath assembly line

By designing an electrolytic cell assembly line and adopting a continuous transfer, stacking, and pressing process, combined with stacking carriers and material suction devices, the problems of low efficiency and high cost in electrolytic cell assembly were solved, achieving efficient and low-cost large-scale production.

CN223699856UActive Publication Date: 2025-12-23WUHAN HGLASER ENG CO LTD +1
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Patent Information

Application Number
CN202423128836.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2025-12-23
Estimated Expiration
2034-12-18

AI Technical Summary

Technical Problem

In the existing technology, the electrolytic cell assembly field suffers from low production efficiency, high cost, and difficulty in meeting the needs of large-scale production.

Method used

An electrolytic cell assembly line was designed, including a lower component assembly station, a stacking station, an upper component assembly station, and a pressing station arranged in sequence. It adopts stacking carrier handling equipment and material picking device to realize the flow-through transfer, stacking, and pressing. Combined with airtightness testing, it improves production efficiency and product quality.

Benefits of technology

It significantly reduces the error rate during installation, improves production efficiency, ensures product quality, reduces production costs, and adapts to the loading and unloading needs of materials of different sizes.

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Abstract

The utility model belongs to the technical field of electrolytic bath production, and particularly provides an electrolytic bath assembly line which comprises a lower end assembly assembling station, a stacking station, an upper end assembly assembling station and a press fitting station which are sequentially arranged. The stacking station is provided with a membrane electrode placing table, a pole plate assembly placing table, a stacking carrier placing table and feeding equipment; the membrane electrode placing table, the polar plate assembly placing table and the stacking carrier placing table are all located in the moving stroke of the feeding equipment; the lower end assembly assembling station, the stacking carrier containing table, the upper end assembly assembling station and the press fitting station are connected through stacking carrier carrying equipment. According to the electrolytic bath assembly line provided by the utility model, assembly line type transplanting, stacking and press mounting are adopted, so that the error rate in the mounting process is greatly reduced, the manufacturing process is reliable, the production efficiency is high, and the product quality is ensured.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the electrolytic cell production technical field, concretely relates to an electrolytic cell assembly line. BACKGROUND

[0002] Hydrogen energy has great potential as an ideal clean energy, and water electrolysis is a green way to produce hydrogen. PEM water electrolysis has high electrolysis efficiency, high power fluctuation matching degree, and high hydrogen purity, making it the most promising hydrogen production technology. Electrolytic cell usually includes stacked upper end assembly, membrane electrode, polar plate assembly and lower end assembly and other accessories. In the field of electrolytic cell assembly, the traditional method uses manual operation for assembly, which has low production efficiency and is prone to assembly errors during production, cannot guarantee product quality, causes waste, and has high production cost, making it difficult to meet large-scale and efficient production requirements. SUMMARY

[0003] The utility model aims at improving the electrolytic cell assembly efficiency and reducing the cost.

[0004] Therefore, the utility model provides an electrolytic cell assembly line, which comprises sequentially arranged lower end assembly assembly station, stacking station, upper end assembly assembly station and press fitting station;The stacking station is provided with a membrane electrode placement table, a polar plate assembly placement table, a stacking carrier placement table and a feeding equipment;The membrane electrode placement table, the polar plate assembly placement table and the stacking carrier placement table are all located within the moving stroke of the feeding equipment;The lower end assembly assembly station, the stacking carrier placement table, the upper end assembly assembly station and the press fitting station are connected through a stacking carrier handling equipment.

[0005] Specifically, the stacking carrier handling equipment connection comprises a first stacking carrier handling equipment, a second stacking carrier handling equipment and a third stacking carrier handling equipment;The lower end assembly assembly station and the stacking carrier placement table are connected through the first stacking carrier handling equipment;The stacking carrier placement table and the upper end assembly assembly station are connected through the second stacking carrier handling equipment;The upper end assembly assembly station and the press fitting station are connected through the third stacking carrier handling equipment.

[0006] Specifically, the electrolytic cell assembly line further comprises a stacking carrier feeding station;The stacking carrier feeding station and the lower end assembly assembly station are connected through a fourth stacking carrier handling equipment.

[0007] Specifically, the electrolytic cell assembly line further comprises an electrolytic cell unloading station;The electrolytic cell unloading station and the press fitting station are connected through a fifth stacking carrier handling equipment.

[0008] Specifically, the press fitting station is provided with a gas tightness detector.

[0009] Specifically, the feeding equipment comprises a mechanical arm and a material suction device; the material suction device is installed on the movable end of the mechanical arm.

[0010] Specifically, the material suction device comprises a fixed support, a movable plate and a bottom plate; the fixed support is installed on the bottom plate; a driving device is arranged on the fixed support; a driving end of the driving device is connected with the movable plate, and is used to drive the movable plate to move relative to the bottom plate; a polar plate suction cup is installed on the movable plate; a membrane electrode suction cup assembly is installed on the bottom plate; a first avoiding hole corresponding to the polar plate suction cup is formed in the bottom plate.

[0011] Specifically, the material suction device further comprises a separator paper suction cup; the separator paper suction cup is installed on the bottom plate.

[0012] Specifically, the electrolytic cell assembly line further comprises a stacking carrier; the stacking carrier comprises a bottom plate and a plurality of limiting columns; the limiting columns are detachably installed on the bottom plate, and the plurality of limiting columns are combined to form a stacking area on the bottom plate.

[0013] Specifically, the bottom of the limiting column is provided with a mounting seat; the mounting seat is provided with a mounting hole; the bottom plate is provided with a positioning hole; the limiting column is detachably installed on the bottom plate through the bolt, the mounting hole and the positioning hole.

[0014] Specifically, the bottom plate is provided with a plurality of positioning holes; the plurality of positioning holes are arranged at intervals along the radial direction of the stacking area.

[0015] Compared with the prior art, the electrolytic cell assembly line has the following advantages and beneficial effects:

[0016] The electrolytic cell assembly line adopts the flow type transplanting, stacking and pressing, greatly reduces the error rate in the installation process, is reliable in manufacturing process, is high in production efficiency, and guarantees product quality. The feeding equipment used is integrated with the polar plate, the membrane electrode and the separator paper suction structure according to the structural characteristics of the material, adjusts the adaptive suction cup to work, is applicable to the feeding and discharging of different sizes of materials, has simple device structure, small volume, saves space and improves the feeding and discharging efficiency of the electrolytic cell. The stacking carrier used has simple structure and is convenient to install; the limiting column plays a limiting role in the electrolytic cell stacking and pressing process, guarantees that the alignment degree of the entire electrolytic stack meets the design requirements, the limiting column can be directly detached after the stacking is completed, does not affect the transportation of the electrolytic cell, avoids the extrusion and friction between the electrolytic stack and the limiting column, the detachable design of the bolt and the positioning hole plays a role of quick plugging / positioning, and is also applicable to the stacking of electrolytic stacks of different sizes.

[0017] The utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of an electrolytic cell assembly line provided by the utility model.

[0019] Figure 2 is a schematic diagram of a stacking carrier conveying equipment in an embodiment provided by the utility model.

[0020] Figure 3 is a schematic diagram of a stacking station of an electrolytic cell assembly line provided by the utility model.

[0021] Figure 4 is a schematic diagram of a material suction device provided by the utility model.

[0022] Figure 5 is a side view of the material suction device provided by the utility model.

[0023] Figure 6 is a bottom view of the material suction device provided by the utility model.

[0024] Figure 7 is a schematic diagram of a bottom plate structure of the material suction device provided by the utility model.

[0025] Figure 8 is a schematic diagram of a stacking carrier structure provided by the utility model.

[0026] Mark for explaining: 1, stacking carrier feeding station; 2, lower end assembly assembling station; 3, stacking station; 4, upper end assembly assembling station; 5, press-fitting station; 6, electrolytic cell discharging station; 7, mechanical arm; 8, material suction device; 801, fixed support; 802, driving device; 803, shaft sleeve; 804, guide shaft; 805, vacuum generator; 806, movable plate; 807, polar plate suction disc; 808, first bottom plate; 8081, first avoiding hole; 8082, second avoiding hole; 809, separator paper suction disc; 810, separator paper suction disc support; 811, membrane electrode suction disc; 812, manifold block; 813, connecting piece; 9, membrane electrode placing table; 10, polar plate assembly placing table; 11, first stacking carrier conveying equipment; 12, second stacking carrier conveying equipment; 13, third stacking carrier conveying equipment; 14, fourth stacking carrier conveying equipment; 15, fifth stacking carrier conveying equipment; 16, stacking carrier; 161, second bottom plate; 162, limiting column; 163, mounting seat; 164, mounting hole; 165, bolt; 166, perpendicularity adjusting pad block; 167, reinforcing rib; 168, stacking seat. DETAILED DESCRIPTION

[0027] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0028] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0029] The terms "first", "second", and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features; in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0030] Referring to Figures 1-3 The utility model provides a kind of electrolytic cell assembly line, including sequentially arranged lower end component assembly station 2, stacking station 3, upper end component assembly station 4 and press fitting station 5;

[0031] Lower end component assembly station 2 is used to assemble lower end component, and stack it on stacking carrier 16;

[0032] Stacking station 3 is used to stack membrane electrode, polar plate assembly on stacking carrier 16, which is provided with membrane electrode placing table 9, polar plate assembly placing table 10, stacking carrier placing table and feeding equipment;Membrane electrode placing table 9, polar plate assembly placing table 10, stacking carrier placing table are all located in the moving stroke of the feeding equipment;

[0033] Upper end component assembly station 4 is used to assemble upper end component, and stack it on electrolytic stack formed by membrane electrode and polar plate assembly;

[0034] Press fitting station 5 is used to press tightly and lock bolt on electrolytic stack on stacking carrier 16;

[0035] Lower end component assembly station 2, stacking carrier placing table, upper end component assembly station 4, press fitting station 5 are connected by stacking carrier handling equipment.

[0036] When working, the lower end assembly (lower end plate, insulating plate, current collector plate) is assembled in the lower end assembly assembly station 2 by manual or assembly equipment, and the assembled lower end assembly is loaded into the stacking carrier 16, and the stacking carrier 16 is transported to the stacking carrier placing table of the stacking station 3 by the stacking carrier conveying equipment. The membrane electrode and the polar plate assembly are taken out from the membrane electrode placing table 9 and the polar plate assembly placing table 10 by the feeding equipment, and the membrane electrode and the polar plate assembly are stacked on the lower end assembly in sequence, and after the stacking is completed, the stacking carrier conveying equipment sends the membrane electrode and the polar plate assembly into the upper end assembly assembly station 4, and the assembled upper end assembly (current collector plate, insulating plate, upper end plate) is stacked on the membrane electrode and the polar plate assembly to complete the stacking of the electrolytic tank. The stacked electrolytic tank is transported to the pressing station 5 together with the stacking carrier 16 by the stacking carrier conveying equipment to press and lock the bolt of the electrolytic tank. Preferably, an air tightness detector is arranged at the pressing station 5 to detect the air tightness of the pressed electrolytic tank.

[0037] Specifically, the stacking carrier conveying equipment includes a first stacking carrier conveying equipment 11, a second stacking carrier conveying equipment 12 and a third stacking carrier conveying equipment 13; the lower end assembly assembly station 2 and the stacking carrier placing table are connected through the first stacking carrier conveying equipment 11; the stacking carrier placing table and the upper end assembly assembly station 4 are connected through the second stacking carrier conveying equipment 12; and the upper end assembly assembly station 4 and the pressing station 5 are connected through the third stacking carrier conveying equipment 13.

[0038] When working, the lower end assembly (lower end plate, insulating plate, current collector plate) is assembled in the lower end assembly assembly station 2 by manual or assembly equipment, and the assembled lower end assembly is loaded into the stacking carrier 16, and the stacking carrier 16 is transported to the stacking carrier placing table of the stacking station 3 by the first stacking carrier conveying equipment 11. The membrane electrode and the polar plate assembly are taken out from the membrane electrode placing table 9 and the polar plate assembly placing table 10 by the feeding equipment, and the membrane electrode and the polar plate assembly are stacked on the lower end assembly in sequence, and after the stacking is completed, the stacking carrier conveying equipment sends the membrane electrode and the polar plate assembly into the upper end assembly assembly station 4, and the assembled upper end assembly (current collector plate, insulating plate, upper end plate) is stacked on the membrane electrode and the polar plate assembly to complete the stacking of the electrolytic tank. The stacked electrolytic tank is transported to the pressing station 5 together with the stacking carrier 16 by the third stacking carrier conveying equipment 13 to press and lock the bolt of the electrolytic tank.

[0039] Further, the electrolytic tank assembly line further includes a stacking carrier feeding station 1; the stacking carrier feeding station 1 and the lower end assembly assembly station 2 are connected through the fourth stacking carrier conveying equipment 14. The stacking carrier 16 is assembled in the stacking carrier feeding station 1, and the assembled stacking carrier 16 is sent to the lower end assembly assembly station 2 by the fourth stacking carrier conveying equipment 14 for subsequent operation.

[0040] In a detailed implementation, the electrolytic cell assembly line further comprises an electrolytic cell unloading station 6; the electrolytic cell unloading station 6 is connected with the pressing station 5 through a fifth stack carrier conveying device 15. The pressed electrolytic cell is sent to the electrolytic cell unloading station 6 by the fifth stack carrier conveying device 15, and the electrolytic cell is manually or mechanically removed from the stack carrier 16 for subsequent application.

[0041] Optionally, each stack carrier conveying device is a conveyor belt or a conveying rail, etc., forming an integrated assembly line conveying structure as shown in Figure 2 The stack carrier 16 is always on the conveyor belt during stacking and pressing, and is sequentially sent to the lower end assembly assembly station 2, the stacking station 3, the upper end assembly assembly station 4 and the pressing station 5 through the conveyor belt, and the stacking, pressing, bolt locking and inspection of the lower end assembly, membrane electrode, polar plate assembly, upper end assembly and other materials are completed thereon. Then, the electrolytic cell is continuously conveyed to the electrolytic cell unloading station 6, and the electrolytic cell is manually or mechanically removed from the stack carrier 16 for subsequent application. The empty stack carrier 16 is sent back to the stack carrier loading station 1 for the next round of operation.

[0042] In an optimized implementation, the loading device comprises a mechanical arm 7 and a material suction device 8; the material suction device 8 is installed on the movable end of the mechanical arm 7. The material suction device 8 is moved between the membrane electrode placement table 9, the polar plate assembly placement table 10 and the stack carrier placement table by the mechanical arm 7, and the suctioned materials are sequentially stacked on the stack carrier 16.

[0043] Specifically, referring to Figures 4-7 The material suction device 8 comprises a fixed support 801, a movable plate 806 and a first bottom plate 808; the fixed support 801 is installed on the first bottom plate 808; the fixed support 801 is provided with a driving device 802; the driving end of the driving device 802 is connected with the movable plate 806, for driving the movable plate 806 to move relative to the first bottom plate 808; the movable plate 806 is installed with a polar plate suction cup 807; the first bottom plate 808 is installed with a membrane electrode suction cup 811 assembly; the first bottom plate 808 is provided with a first avoiding hole 8081 corresponding to the polar plate suction cup 807. In use, the driving device 802 is retracted, so that the movable plate 806 is at a position far away from the first bottom plate 808, and the polar plate suction cup 807 is away from the first avoiding hole 8081. The membrane electrode is suctioned by the membrane electrode suction cup 811 assembly, and is transplanted to the positioning platform for photographing, deviation correction, and then is unloaded to the electrolytic cell carrier. When the polar plate assembly needs to be conveyed, the driving device 802 drives the movable plate 806 to move towards the first bottom plate 808, so that the polar plate suction cup 807 passes through the first avoiding hole 8081, suctioning the polar plate assembly, and the conveying mechanism is transplanted to the positioning platform for photographing, deviation correction, and then the polar plate assembly is unloaded to the electrolytic cell carrier.

[0044] The fixed support 801 is preferably a frame structure, including a fixed plate and a side plate; one end of the side plate is connected to the bottom surface of the fixed plate, and the other end is connected to the top surface of the first bottom plate 808; the movable plate 806 is arranged between the first bottom plate 808 and the fixed plate and moves relative to the first bottom plate 808 through the driving device 802. The side plate is designed according to actual needs, and two side plates are generally symmetrically arranged below the fixed plate to ensure structural stability. The driving device 802 is preferably a telescopic cylinder, and the end of the piston rod is connected to the movable plate 806.

[0045] Since the bipolar plate has a large single-piece size, a thin thickness, and poor strength, the membrane electrode needs to be separated by isolation paper when it is delivered, and the material suction device 8 further includes a separator suction disc 809; the separator suction disc 809 is installed on the first bottom plate 808. During operation, the separator suction disc 809 and the membrane electrode suction disc 811 assembly simultaneously suck the membrane electrode and the separator paper, and during the carrying process, the separator paper is discharged to a special material frame, and the membrane electrode is transplanted to a positioning platform for photographing, deviation correction, and after completion, the membrane electrode is discharged to an electrolytic tank carrier.

[0046] Further, the material suction device 8 further includes a separator suction disc support 810; the separator suction disc 809 is installed on the first bottom plate 808 through the separator suction disc support 810.

[0047] Specifically, the first bottom plate 808 is provided with a second avoiding hole 8082 corresponding to the separator suction disc 809; the separator suction disc 809 is inserted into the second avoiding hole 8082.

[0048] The number and distribution position of the polar plate suction disc 807, the membrane electrode suction disc 811, and the separator suction disc 809 are designed differently according to actual conditions, better adapt to the shape and material properties of the separator paper, the membrane electrode, and the polar plate, and obtain better suction effect. Preferably, the polar plate suction disc 807 is arranged in the middle, the separator suction disc 809 is arranged on both sides of the polar plate suction disc 807, and the membrane electrode suction disc 811 is arranged around the polar plate suction disc 807.

[0049] In a refined embodiment, the membrane electrode suction disc 811 assembly includes a membrane electrode suction disc 811 and a manifold block 812; the manifold block 812 and the membrane electrode suction disc 811 are both installed on the first bottom plate 808; the manifold block 812 is provided with a first air pipe; one end of the first air pipe is in communication with the membrane electrode suction disc 811, and the other end is in communication with an external vacuum source to provide suction force for the membrane electrode suction disc 811.

[0050] Optionally, a buffer is arranged between the fixed support 801 and the movable plate 806.

[0051] Specifically, the buffer includes a guide shaft 804 and a shaft sleeve 803 sleeved outside the guide shaft 804; the shaft sleeve 803 is mounted on the fixed support 801; and one end of the guide shaft 804 is connected with the movable plate 806. The movable plate 806 is slidably matched with the guide shaft 804 through the shaft sleeve 803. The number of the buffer is designed according to the requirement, and generally, one buffer is arranged at each corner of the movable plate 806 to ensure that the movable plate 806 moves stably under the driving of the driving device 802.

[0052] Further, the material suction device 8 further includes a vacuum generator 805; the vacuum generator 805 is mounted on the movable plate 806 and communicates with the polar plate suction disc 807 through a second air pipe to provide suction force for the polar plate suction disc 807.

[0053] In an optimized embodiment, the fixed support 801 is provided with a connecting piece 813 for connecting the mechanical arm 7. The fixed support 801 is connected with the mechanical arm 7 through the connecting piece 813, and the material suction device 8 is driven by the mechanical arm 7 to complete the feeding and discharging of the polar plate and the membrane electrode. The connecting piece 813 can be selected as a connecting flange or other structure according to the requirement.

[0054] In a refined embodiment, as shown in Figure 8 The stacking carrier 16 includes a second bottom plate 161 and a plurality of limiting columns 162; the limiting columns 162 are detachably mounted on the second bottom plate 161, and the plurality of limiting columns 162 enclose the stacking area on the second bottom plate 161. The limiting columns 162 are generally vertically mounted on the second bottom plate 161, and the length and number are designed according to the actual requirement. During work, the electrolytic cell materials are sequentially stacked and pressed to form an electrolytic stack in the stacking area. During the stacking and pressing of the PEM electrolytic stack, the plurality of limiting columns 162 are spaced and enclosed outside the stacking area to limit the electrolytic stack, ensure that the edges of the entire electrolytic stack are flush, the alignment degree meets the design requirement, and the overall stacking precision is improved. Since the electrolytic stack is generally high, the limiting columns 162 are provided with reinforcing ribs 167 to improve the strength of the limiting columns 162.

[0055] Specifically, the limiting column 162 is provided with a mounting seat 163 at the bottom; the mounting seat 163 is provided with a mounting hole 164; the second bottom plate 161 is provided with a positioning hole; and the limiting column 162 is detachably mounted on the second bottom plate 161 through the bolt 165, the mounting hole 164 and the positioning hole. The bolt 165 and the positioning hole play the role of quick plug / positioning. When the PEM electrolytic stack is offline, the bolt 165 is pulled out, and the limiting column 162 outside the electrolytic stack is removed to ensure that the electrolytic stack is not squeezed and rubbed by the limiting column 162.

[0056] In order to improve the applicability of the stacking carrier 16, a plurality of positioning holes are arranged on the second bottom plate 161; the plurality of positioning holes are arranged at intervals along the radial direction of the stacking area. By adjusting the positioning hole corresponding to the insertion pin 165, the size of the stacking area can be changed, the range of the guiding and limiting area is adjusted to adapt to electrolytic cells of different sizes. In another embodiment, a plurality of mounting holes 164 can be arranged on the mounting seat 163, by matching different mounting holes 164, the fixing position of the limiting column 162 is changed, and then the size of the stacking area is adjusted.

[0057] In a refined embodiment, the stacking carrier 16 further comprises a stacking seat 168; the stacking seat 168 is installed on the stacking area. In operation, the materials are sequentially stacked and pressed on the stacking seat 168.

[0058] In a preferred embodiment, the limiting column 162 is provided with a perpendicularity adjusting pad 166 on the side facing the stacking area, by adjusting the perpendicularity adjusting pad 166, the perpendicularity of the limiting column 162 is ensured, and thus the alignment of the whole stack is ensured.

[0059] The above examples are only illustrative of the present application, and do not constitute a limitation on the protection scope of the present application, any design identical or similar to the present application belongs to the protection scope of the present application.

Claims

1. An electrolytic cell assembly line, characterized by: The application relates to a membrane-electrode assembly (MEA) stacking and pressing device, which comprises sequentially arranged lower end component assembly workstations (2), stacking workstations (3), upper end component assembly workstations (4) and pressing workstations (5); the stacking workstations (3) are provided with a membrane-electrode placing table (9), a polar plate component placing table (10), a stacking carrier placing table and a feeding device; the membrane-electrode placing table (9), the polar plate component placing table (10) and the stacking carrier placing table are located in the moving stroke of the feeding device; the lower end component assembly workstations (2), the stacking carrier placing table, the upper end component assembly workstations (4) and the pressing workstations (5) are connected through a stacking carrier conveying device.

2. The cell line as claimed in claim 1, wherein: The stacking carrier conveying device comprises a first stacking carrier conveying device (11), a second stacking carrier conveying device (12) and a third stacking carrier conveying device (13); the lower end component assembly workstations (2) and the stacking carrier placing table are connected through the first stacking carrier conveying device (11); the stacking carrier placing table and the upper end component assembly workstations (4) are connected through the second stacking carrier conveying device (12); and the upper end component assembly workstations (4) and the pressing workstations (5) are connected through the third stacking carrier conveying device (13).

3. The cell line as claimed in claim 2, wherein: The device further comprises a stacking carrier feeding workstation (1); the stacking carrier feeding workstation (1) and the lower end component assembly workstations (2) are connected through a fourth stacking carrier conveying device (14).

4. The cell line of claim 2, wherein: The device further comprises an electrolytic cell discharging workstation (6); the electrolytic cell discharging workstation (6) and the pressing workstations (5) are connected through a fifth stacking carrier conveying device (15).

5. The cell line as claimed in claim 1, wherein: The pressing workstations (5) are provided with a gas-tightness detector.

6. The cell line of claim 1, wherein: The feeding device comprises a mechanical arm (7) and a material suction device (8); the material suction device (8) is installed on the movable end of the mechanical arm (7).

7. The cell line of claim 6, wherein: The material suction device (8) comprises a fixed support (801), a movable plate (806) and a first bottom plate (808); the fixed support (801) is installed on the first bottom plate (808); a driving device (802) is arranged on the fixed support (801); the driving end of the driving device (802) is connected with the movable plate (806) and is used for driving the movable plate (806) to move relative to the first bottom plate (808); a polar plate suction disc (807) is installed on the movable plate (806); a membrane-electrode suction disc assembly is installed on the first bottom plate (808); and a first avoiding hole (8081) corresponding to the polar plate suction disc (807) is formed in the first bottom plate (808).

8. The cell line of claim 7, wherein: The material suction device (8) further comprises a separator paper suction disc (809); the separator paper suction disc (809) is installed on the first bottom plate (808).

9. The cell line of claim 1, wherein: The device further comprises a stacking carrier (16); the stacking carrier (16) comprises a second bottom plate (161) and a plurality of limiting columns (162); the limiting columns (162) are detachably installed on the second bottom plate (161), and the plurality of limiting columns (162) are combined to form a stacking area on the second bottom plate (161).

10. The cell line of claim 9, wherein: The limiting column (162) is provided with a mounting seat (163) at the bottom; the mounting seat (163) is provided with a mounting hole (164); the second bottom plate (161) is provided with a positioning hole; and the limiting column (162) is detachably installed on the second bottom plate (161) through a bolt (165), the mounting hole (164) and the positioning hole.