Membrane electrode alkaline galvanic pile with parallel connection and series connection structures

Abstract

The utility model discloses a membrane electrode alkaline electric pile with a parallel connection and series connection structure, which can be used as a single tank to meet the use requirement of a laboratory, and can also be converted into an electric pile by adding components such as a polar plate and an exchange membrane, and a membrane electrode electrolytic bath is developed into the membrane electrode electric pile for the first time. A single tank is in a membrane electrode form, namely, the distance between two polar plates is extremely low, a flowing electrolyte solution can be fully electrolyzed, the applicability is high, the membrane electrode alkaline electric pile with the parallel and series structures adopts a special design, not only can be used as a parallel electric pile, but also can be used as a series electric pile, and through the arrangement of a temperature measuring thermocouple, the electric pile can be used as an electrolytic cell. In addition, due to the integrated design of the potential measuring connector, convenience is provided for performance monitoring and maintenance of the electric pile, the service life of the electric pile is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery stacks, in particular to a membrane electrode alkaline battery stack with a parallel and series structure. Background Art

[0002] In the current energy conversion and storage technology, membrane electrode alkaline stacks have attracted widespread attention due to their high energy conversion rate and low environmental impact. Traditional alkaline stacks usually use a single series or parallel method to increase the voltage or current output of the stack. There are many types of electrolyzers currently available, but the external structure is similar, all of which are composed of two plates, exchange membranes, catalysts, etc., but two plates can only form a single tank. To form a stack, a flow channel is required inside the electrolyzer to collect the hydrogen and oxygen produced in all electrolyzers, and provide the electrolyte solution and electricity required for each tank to electrolyze water. Different types of electrolyzers have different ways of placing the stack. Most of the existing electrolyzers are mainly connected in series, that is, only the potential difference is given to the two outermost sets of plates, and the electrolyte solution and the plate (metal conductive end plate) are connected in the middle, so that the electrolyzer as a whole can achieve the effect of conductivity, and then each electrolyzer inside can undergo a water electrolysis reaction.

[0003] At present, there are still many difficulties and defects in the application of membrane electrode alkaline stacks:

[0004] 1. The traditional fuel cell stack consists of pressure-bearing end plates, insulating plates, seals, bipolar plates, gas diffusion layers, MEA (membrane electrode assembly) and fasteners. The design of the bipolar plate is the key and difficult part of the fuel cell stack design. Its materials, dimensions, performance indicators, sealing and packaging methods all need to be carefully designed to meet different application requirements;

[0005] 2. Only series or parallel connection can be used to increase the voltage or current output of the battery stack, which indirectly increases the equipment cost;

[0006] 3. Traditional alkaline fuel cells have some design and operational limitations, such as poor sealing, high assembly complexity, and inconvenient maintenance. These limitations lead to stability and durability problems of the fuel cell stack under extreme working conditions such as high temperature and high pressure, thus limiting its wider application.

[0007] In view of this, a membrane electrode alkaline stack with parallel and series structures is now designed. Utility Model Content

[0008] The purpose of the utility model is to provide a membrane electrode alkaline stack with a parallel and series structure to solve the problems existing in the existing membrane electrode alkaline stack mentioned in the above background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a membrane electrode alkaline stack with parallel and series structures, comprising two groups of metal end plates, two groups of end plate gaskets, several groups of universal power connection plates, several groups of universal gaskets, several groups of exchange membranes, several groups of stack separators, an intermediate current collecting plate and a clamping bolt assembly;

[0010] Two groups of end plate gaskets are connected between two groups of metal end plates;

[0011] Several groups of the universal power connection plates, several groups of the universal gaskets, several groups of the exchange membranes, several groups of stack separators, and intermediate current collecting plates are connected between the two groups of end plate gaskets;

[0012] The front side and the rear side of the metal end plate are both provided with flow passages, the flow passages are connected with quick-insertion bolts through threaded structures, and the top of the metal end plate is connected with a temperature measuring thermocouple;

[0013] The end plate gasket, the universal gasket, the stack separator and the middle current collecting plate are all provided with two groups of flow holes in the upper end and the lower end;

[0014] The upper end and the lower end of the universal power connection plate are provided with embedded holes, the embedded holes are connected with embedded O-rings, and the middle part of the universal power connection plate is provided with an electrolytic flow channel;

[0015] The clamping bolt assembly includes several groups of mounting bolts and several groups of nuts. Several groups of mounting holes are opened through the edges of the metal end plate, end plate gasket, universal power connection plate, universal gasket, battery stack partition, and intermediate current collecting plate. Several groups of mounting bolts are inserted and connected in the several groups of mounting holes, and the nuts are connected to the mounting bolts through a threaded structure.

[0016] Preferably, the quick-insert bolt is a hollow structure.

[0017] Preferably, the flow channel opening is an "L"-shaped structure, and an inner groove is provided at the opening of the flow channel opening close to one side of the end plate gasket, and a fluororubber O-ring is connected to the inner groove.

[0018] Preferably, the tops of the battery stack separators and the intermediate current collecting plates are integrally connected with potential measurement connectors.

[0019] Preferably, a square hole is formed through the inner side of the universal gasket.

[0020] Preferably, when used as a membrane electrode alkaline stack of a parallel structure, its components include two groups of metal end plates, two groups of end plate gaskets, several groups of universal power connection plates, several groups of universal gaskets, several groups of exchange membranes, and a clamping bolt assembly.

[0021] Preferably, when used as a membrane electrode alkaline stack of a series structure, its components include two sets of metal end plates, two sets of end plate gaskets, several sets of universal power connection plates, several sets of universal gaskets, several sets of exchange membranes, several sets of stack separators, intermediate current collecting plates, and clamping bolt assemblies, wherein:

[0022] Several groups of battery stack partitions are continuously stacked and connected laterally.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] 1. The membrane electrode alkaline stack with parallel and series structures can be used as a single cell to meet laboratory use needs, and can also be converted into a stack by adding components such as plates and exchange membranes. For the first time, the membrane electrode electrolyzer has been developed into a membrane electrode stack. The single cell is in the form of a membrane electrode, that is, the distance between the two plates is extremely short, and the electrolyte solution flowing through can be fully electrolyzed, which has high applicability;

[0025] 2. The membrane electrode alkaline stack with parallel and series structures can achieve complete separation of hydrogen and oxygen, ensuring the output of pure hydrogen and oxygen. The square hole design of the universal gasket provides better component compatibility and flexibility;

[0026] 3. The membrane electrode alkaline fuel cell with parallel and series structure adopts a special design, which can be used as a parallel type fuel cell or a series type fuel cell. The temperature measuring thermocouple is set to facilitate the real-time detection of the temperature of the fuel cell. In addition, the integrated design of the potential measurement joint facilitates the performance monitoring and maintenance of the fuel cell, thereby extending the service life of the fuel cell and reducing the maintenance cost.

[0027] 4. The membrane electrode alkaline fuel cell stack with parallel and series structures significantly improves the stability and sealing of the fuel cell stack by optimizing the internal structure and connection method of the fuel cell stack, effectively simplifies the fluid import and export process, and reduces potential leakage points. The multi-stage zigzag structure of the electrolysis flow channel enhances the flow efficiency of the electrolyte and improves the uniformity of the electrochemical reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The utility model is an exploded diagram of a membrane electrode alkaline stack with parallel and series structures as a membrane electrode alkaline stack with a parallel structure;

[0029] Figure 2 The utility model is an exploded diagram of a membrane electrode alkaline stack with parallel and series structures as a membrane electrode alkaline stack with a series structure;

[0030] Figure 3 A schematic diagram of the structure of a metal end plate of a membrane electrode alkaline stack with parallel and series structures of the utility model;

[0031] Figure 4 Another structural schematic diagram of the metal end plate of the membrane electrode alkaline stack with parallel and series structures of the utility model;

[0032] Figure 5 It is a schematic diagram of the structure of the utility model after the metal end plate of the membrane electrode alkaline stack with parallel and series structure is installed with quick-insertion bolts and fluororubber O-rings;

[0033] Figure 6 It is a schematic diagram of the end plate gasket structure of the membrane electrode alkaline stack with parallel and series structures of the utility model;

[0034] Figure 7 It is a schematic diagram of the universal gasket structure of the membrane electrode alkaline stack with parallel and series structures of the utility model;

[0035] Figure 8 It is a schematic diagram of the structure of a universal power connection board of a membrane electrode alkaline battery stack with parallel and series structures of the utility model;

[0036] Fig. 9 It is a schematic diagram of the structure of the intermediate current collecting plate of the membrane electrode alkaline battery stack with parallel and series structures of the utility model;

[0037] Fig.10 The utility model is a membrane electrode alkaline stack with parallel and series structures as an assembly diagram of a membrane electrode alkaline stack with a parallel structure;

[0038] Fig.11 The utility model is an assembly diagram of a membrane electrode alkaline battery stack with parallel and series structures as a membrane electrode alkaline battery stack with a series structure.

[0039] In the figure:

[0040] 1. Metal end plate; 2. End plate gasket; 3. Universal power board; 4. Universal gasket;

[0041] 5. Exchange membrane; 6. Flow channel; 7. Temperature measuring thermocouple; 8. Quick-insert bolt;

[0042] 9. Inner groove; 10. Fluorine rubber O-ring; 11. Flow hole; 12. Embedding hole;

[0043] 13. Stack separator; 14. Intermediate current collecting plate; 15. Electrolysis flow channel; 16. Potential measurement connector;

[0044] 17. Mounting bolts; 18. Nuts; 19. Mounting holes; 20. Embedded O-rings;

[0045] 21. Square hole. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] In the description of the utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0049] See also Figure 1-11 The utility model provides a technical solution: a membrane electrode alkaline stack with a parallel and series structure, including two groups of metal end plates 1, two groups of end plate gaskets 2, several groups of universal power connection plates 3, several groups of universal gaskets 4, several groups of exchange membranes 5, several groups of stack partitions 13, an intermediate current collecting plate 14 and a clamping bolt assembly.

[0050] Two groups of end plate gaskets 2 are connected between two groups of metal end plates 1 .

[0051] Several groups of universal power connection plates 3 , several groups of universal gaskets 4 , several groups of exchange membranes 5 , several groups of stack separators 13 , and intermediate current collecting plates 14 are connected between the two groups of end plate gaskets 2 .

[0052] A flow channel opening 6 is provided in the front side and the rear side of the metal end plate 1 , and a quick-insert bolt 8 is connected to the flow channel opening 6 through a threaded structure. A temperature measuring thermocouple 7 is inserted and connected in the top of the metal end plate 1 .

[0053] The quick-insert bolt 8 is a hollow structure. Specifically, setting the quick-insert bolt 8 as a hollow structure helps to reduce the overall weight of the battery stack, and also facilitates the introduction and export of the fluid, that is, the quick-insert bolt 8 is connected to the flow channel 6, which improves the operating efficiency of the battery stack.

[0054] The flow channel opening 6 is an "L"-shaped structure, and an inner groove 9 is provided at the opening of the flow channel opening 6 near the end plate gasket 2, and a fluororubber O-ring 10 is connected to the inner groove 9. Specifically, the flow direction of the electrolyte and gas in the flow channel opening 6 is perpendicular to the plane where the electrode is located, which increases the contact area and time between the electrolyte and gas and the electrode surface. The fluororubber O-ring 10 is arranged in the inner groove 9, that is, the fluororubber O-ring 10 is connected between the metal end plate 1 and the end plate gasket 2, which effectively enhances the sealing performance of the battery stack under high temperature and high pressure working conditions, reduces the possibility of leakage, and improves the safety of the battery stack.

[0055] A square hole 21 is formed through the inner side of the universal gasket 4. Specifically, the square hole 21 inside the universal gasket 4 provides better component compatibility and flexibility, and cathode materials or anode materials can be placed in the square hole 21, so that the battery stack can adapt to more different types of electrochemical reactions and working conditions.

[0056] Two groups of flow holes 11 are provided in the upper and lower ends of the end plate gasket 2 , the universal gasket 4 , the stack separator 13 and the intermediate current collecting plate 14 .

[0057] The upper and lower ends of the universal power board 3 are provided with embedded holes 12, and the embedded O-ring 20 is connected to the embedded hole 12. The middle part of the universal power board 3 is provided with an electrolytic flow channel 15. Specifically, the flow hole 11, the embedded hole 12, and the electrolytic flow channel 15 are all used for circulating electrolyte and gas.

[0058] Specifically, the stack can achieve complete separation of hydrogen and oxygen to ensure the output of pure hydrogen and oxygen. Since the internal potential of each universal connection plate 3 inside the stack is different when in use, and the electrolyte solution will contact each universal connection plate 3 when passing through the electrolyte flow channel at the bottom of the stack, the electrolysis reaction of water will also occur in the flow channel, resulting in hydrogen and oxygen being generated inside before the electrolyte enters each cavity, and the gas is mixed, so that when the electrolyzer is output, a small amount of hydrogen will be mixed with the oxygen, and a small amount of oxygen will be mixed with the hydrogen outlet. In order to avoid the phenomenon of impure gas production, an embedded O-ring 20 is provided in the universal connection plate 3 to separate the electrolyte of the anode and cathode plates, that is, in the electrolyte flow channel supplying the cathode cavity, an embedded O-ring 20 is provided in the anode plate to separate the anode plate, and in the electrolyte flow channel of the anode cavity, an embedded O-ring 20 is provided in the cathode plate to separate the cathode plate.

[0059] The middle part of the electrolytic flow channel 15 is a multi-stage meander structure, and the upper and lower ends of the electrolytic flow channel 15 are both vertically arranged. Specifically, this makes the flow of the electrolyte in the stack more uniform, which helps to improve the efficiency of the electrochemical reaction and the overall performance of the stack.

[0060] The tops of the stack partition 13 and the middle current collecting plate 14 are integrally connected with a potential measuring connector 16. Specifically, the setting of the potential measuring connector 16 provides convenience for the performance monitoring of the stack, facilitates the measurement of the potential during the experiment, and helps to timely discover and solve problems in the operation of the stack.

[0061] Specifically, the stack separator 13 has a similar structure to the universal gasket 4 , and a square hole is provided through the inner side of the stack separator 13 for placing materials.

[0062] The clamping bolt assembly includes several groups of mounting bolts 17 and several groups of nuts 18. Several groups of mounting holes 19 are provided through the edges of the metal end plate 1, the end plate gasket 2, the universal power connection plate 3, the universal gasket 4, the stack partition 13, and the intermediate current collecting plate 14. Several groups of mounting bolts 17 are inserted and connected in the several groups of mounting holes 19, and the nuts 18 are connected to the mounting bolts 17 through a threaded structure. Specifically, the components are pressed and locked together by several groups of mounting bolts 17 and several groups of nuts 18. This structural design makes the stack more flexible during assembly and maintenance, and can quickly adjust the size and output characteristics of the stack according to actual application requirements.

[0063] When used as a parallel structured membrane electrode alkaline stack, its components include two sets of metal end plates 1, two sets of end plate gaskets 2, several sets of universal power connection plates 3, several sets of universal gaskets 4, several sets of exchange membranes 5, and clamping bolt assemblies. Figure 1 And the instruction manual Fig.10 , is a parallel structured membrane electrode alkaline stack, the leftmost and rightmost are both metal end plates 1, the two sets of metal end plates 1 are connected to end plate gaskets 2 near each other, four sets of universal access plates 3, six sets of universal gaskets 4, and three sets of exchange membranes 5 are arranged between the two sets of end plate gaskets 2, the four sets of universal access plates 3 are respectively cathode plates, anode plates, cathode plates, and anode plates from left to right, that is, each two sets of adjacent cathode plates and anode plates are provided with an exchange membrane 5, when the universal access plate 3 is used as a cathode plate, the square inside thereof The hole 21 can be used to place cathode material. When the universal power connection plate 3 is used as an anode plate, the square hole 21 inside it can be used to place anode material. The quick-insert bolt 8 at the upper end of the front side of the left metal end plate 1 is the outlet of gas and cathode electrolyte, and the quick-insert bolt 8 at the lower end of the rear side of the left metal end plate 1 is the inlet of cathode electrolyte. The quick-insert bolt 8 at the lower end of the front side of the right metal end plate 1 is the inlet of anode electrolyte, and the quick-insert bolt 8 at the upper end of the rear side of the right metal end plate 1 is the outlet of gas and anode electrolyte.

[0064] For details, please refer to the attached manual. Figure 1 And the instruction manual Fig.10 It is a membrane electrode alkaline dual stack with a parallel structure. According to the actual use requirements, three stacks, five stacks, etc. can be realized by adding a universal power connection plate 3, a universal gasket 4, and an exchange membrane 5. The more stacks there are, the stronger the ability to electrolyze water and the higher the hydrogen production efficiency. There are only two extremely thin universal gaskets 4 between the two plates of the parallel type stack, so the internal gap is extremely low, which can make full use of electrical energy, so that it can fully electrolyze water to produce hydrogen and oxygen within a small voltage range. When in use, both sides of the cathode plate are cathode electrodes (cathode catalysts are placed), and both sides of the anode plate are anode electrodes (anode catalysts are placed).

[0065] When used as a membrane electrode alkaline stack of a series structure, its components include two sets of metal end plates 1, two sets of end plate gaskets 2, several sets of universal power connection plates 3, several sets of universal gaskets 4, several sets of exchange membranes 5, several sets of stack separators 13, intermediate current collecting plates 14, and clamping bolt assemblies, wherein:

[0066] Several groups of stack separators 13 are continuously stacked and connected in transverse direction.

[0067] For details, please refer to the attached manual. Figure 2 And the instruction manual Fig.11 , is a membrane electrode alkaline stack of series structure, the leftmost and rightmost are metal end plates 1, the two groups of metal end plates 1 are connected to the end plate gasket 2 near each other, two groups of universal connection plates 3, six groups of universal gaskets 4, three groups of exchange membranes 5, three groups of stack separators 13, and one group of intermediate current collecting plates 14 are arranged between the two groups of end plate gaskets 2, the two groups of universal connection plates 3 are cathode plates and anode plates from left to right, three groups of stack separators 13 are stacked between the two groups of exchange membranes 5 on the leftmost side, and one group of intermediate current collecting plates 14 is arranged between the third group of universal gaskets 4 and the fourth group of universal gaskets 4 from left to right, when the universal connection plate 3 is used as a cathode plate, the square hole 21 inside it can be used to place the cathode material, When the universal power connection plate 3 is used as an anode plate, the square hole 21 on the inner side thereof can be used to place the anode material, the quick-insert bolt 8 at the upper front end of the left metal end plate 1 is the outlet for gas and cathode electrolyte, the quick-insert bolt 8 at the lower rear end of the left metal end plate 1 is the inlet for cathode electrolyte, the quick-insert bolt 8 at the lower front end of the right metal end plate 1 is the inlet for anode electrolyte, the quick-insert bolt 8 at the upper rear end of the right metal end plate 1 is the outlet for gas and anode electrolyte, and the intermediate current collecting plate 14 separates each battery stack in space. The intermediate current collecting plate 14 is made of metal conductive material and can transfer electrons. During the electrochemical reaction, the intermediate current collecting plate 14 serves to connect the circuits of each battery stack.

[0068] Specifically, the membrane electrode alkaline fuel cell with a parallel structure has a different power connection method from the membrane electrode alkaline fuel cell with a series structure. The membrane electrode alkaline fuel cell with parallel and series structures adopts a special design so that it can be used as both a parallel type fuel cell and a series type fuel cell. The setting of the temperature measuring thermocouple 7 facilitates real-time detection of the temperature generated by the fuel cell.

[0069] Specifically, from the appearance, the electrolyzers currently available are mainly cylindrical in shape for factories, and square in shape for single cells used in laboratories. The membrane electrode alkaline cell stack with parallel and series structures can be used as a single cell to meet laboratory use needs, and can also be converted into a cell stack by adding components such as plates and exchange membranes. For the first time, the membrane electrode electrolyzer is developed into a membrane electrode cell stack. The single cell is in the form of a membrane electrode, that is, the distance between the two plates is extremely low, which can fully electrolyze the electrolyte solution flowing through it, and has high applicability. This cell stack is the first to develop the membrane electrode electrolyzer into a membrane electrode cell stack. This cell stack is different from other cell stacks. The single cell is in the form of a membrane electrode, that is, the distance between the two plates is extremely low, which can fully electrolyze the electrolyte solution flowing through it.

[0070] Specifically, according to actual use requirements, a heating plate can be provided on the outer side of the metal end plate 1 to meet the temperature requirements of the electrolytic cell operating conditions.

[0071] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A membrane electrode alkaline stack having a parallel and series structure, characterized in that: It comprises two groups of metal end plates (1), two groups of end plate gaskets (2), several groups of universal power connection plates (3), several groups of universal gaskets (4), several groups of exchange membranes (5), several groups of stack separators (13), an intermediate current collecting plate (14) and a clamping bolt assembly; The two groups of end plate gaskets (2) are connected between the two groups of metal end plates (1); Several groups of the universal power connection plates (3), several groups of the universal gaskets (4), several groups of the exchange membranes (5), several groups of stack separators (13), and intermediate current collecting plates (14) are connected between the two groups of end plate gaskets (2); The front side and the rear side of the metal end plate (1) are both provided with flow passage openings (6), the flow passage openings (6) are connected with quick-insertion bolts (8) via threaded structures, and the top of the metal end plate (1) is connected with a temperature measuring thermocouple (7); Two groups of flow holes (11) are provided in the upper and lower ends of the end plate gasket (2), the universal gasket (4), the stack separator (13) and the intermediate current collecting plate (14); The upper end and the lower end of the universal power connection plate (3) are both provided with embedded holes (12), an embedded O-ring (20) is connected to the embedded hole (12), and an electrolytic flow channel (15) is provided in the middle of the universal power connection plate (3); The clamping bolt assembly comprises a plurality of groups of mounting bolts (17) and a plurality of groups of nuts (18); the edges of the metal end plate (1), the end plate gasket (2), the universal power connection plate (3), the universal gasket (4), the battery stack partition (13), and the intermediate current collecting plate (14) are all provided with a plurality of groups of mounting holes (19); the plurality of groups of mounting bolts (17) are inserted and connected in the plurality of groups of mounting holes (19); and the nuts (18) are connected to the mounting bolts (17) via a threaded structure.

2. The membrane electrode alkaline fuel cell stack with parallel and series structure according to claim 1, characterized in that: The quick-insertion bolt (8) is a hollow structure.

3. The membrane electrode alkaline fuel cell stack with parallel and series structure according to claim 1, characterized in that: The flow channel opening (6) is an "L"-shaped structure, and an inner groove (9) is provided at an opening of the flow channel opening (6) close to one side of the end plate gasket (2), and a fluororubber O-ring (10) is connected to the inner groove (9).

4. The membrane electrode alkaline fuel cell stack with parallel and series structure according to claim 1, characterized in that: The middle part of the electrolysis flow channel (15) is a multi-section meandering structure, and the upper end and the lower end of the electrolysis flow channel (15) are both vertically arranged.

5. The membrane electrode alkaline fuel cell stack with parallel and series structure according to claim 1, characterized in that: The tops of the battery stack separator (13) and the intermediate current collecting plate (14) are integrally connected with a potential measurement connector (16).

6. The membrane electrode alkaline fuel cell stack with parallel and series structure according to claim 1, characterized in that: A square hole (21) is formed through the inner side of the universal gasket (4).

7. The membrane electrode alkaline fuel cell stack with parallel and series structure according to claim 1, characterized in that: When used as a membrane electrode alkaline stack of a parallel structure, its components include two groups of metal end plates (1), two groups of end plate gaskets (2), several groups of universal power connection plates (3), several groups of universal gaskets (4), several groups of exchange membranes (5), and a clamping bolt assembly.

8. The membrane electrode alkaline fuel cell stack with parallel and series structure according to claim 1, characterized in that: When used as a membrane electrode alkaline stack of a series structure, its components include two groups of metal end plates (1), two groups of end plate gaskets (2), several groups of universal power connection plates (3), several groups of universal gaskets (4), several groups of exchange membranes (5), several groups of stack separators (13), an intermediate current collecting plate (14), and a clamping bolt assembly, wherein: A plurality of groups of stack separators (13) are continuously stacked and connected in a transverse manner.

Images