Electrolytic bath device

Abstract

The utility model discloses an electrolytic bath device, and relates to the technical field of hydrogen production, the electrolytic bath device comprises a plurality of small electrolytic baths which are sequentially arranged along a first direction, and an insulating plate is arranged between every two adjacent small electrolytic baths; each small electrolytic cell is provided with a positive electrode and a negative electrode, the positive electrode of the first small electrolytic cell is used for being connected with the positive electrode of a power supply, the negative electrode of the last small electrolytic cell is used for being connected with the negative electrode of the power supply, and the negative electrode of the last small electrolytic cell is electrically connected with the positive electrode of the next small electrolytic cell in sequence. The method is used for increasing the capacity of the electrolytic cell, realizing integrated design of the electrolytic cell and solving the problem of low current efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogen production, and in particular to an electrolyzer device. Background Art

[0002] As a key technology for achieving the dual carbon goals, renewable energy hydrogen production technology is gaining widespread application as hydrogen demand increases and the cost of renewable energy electricity decreases. This has led to higher demands for electrolyzer capacity. A larger electrolyzer capacity means a greater number of cells. Bypass current, which affects current efficiency, is strongly correlated with the cell structure and electrode connections. A greater number of cells leads to greater shunting, resulting in a more pronounced problem of low current efficiency.

[0003] Based on this, the prior art urgently needs an electrolytic cell device for improving current efficiency while ensuring the capacity of the electrolytic cell. Utility Model Content

[0004] The main purpose of this application is to propose an electrolytic cell device, which aims to increase the capacity of the electrolytic cell, realize the integrated design of the electrolytic cell, and solve the problem of low current efficiency.

[0005] To achieve the above objectives, the present application proposes an electrolytic cell device comprising:

[0006] A plurality of small electrolytic cells are sequentially arranged along a first direction, with an insulating plate provided between two adjacent small electrolytic cells;

[0007] Each of the small electrolytic cells has a positive electrode and a negative electrode. The positive electrode of the first of the multiple small electrolytic cells is used to connect to the positive electrode of the power supply, and the negative electrode of the last of the multiple small electrolytic cells is used to connect to the negative electrode of the power supply. The negative electrode of the previous one of the multiple small electrolytic cells is electrically connected to the positive electrode of the next one in turn.

[0008] In one embodiment, two adjacent small electrolytic cells are disposed on both sides of the insulating plate and are connected into one body through the insulating plate.

[0009] In one embodiment, the electrolytic cell device further includes a cell body, and the plurality of small electrolytic cells are disposed in the cell body.

[0010] In one embodiment, each of the small electrolytic cells includes a first end pressing plate and a second end pressing plate spaced apart along the first direction, and the first end pressing plate of one of two adjacent small electrolytic cells is connected to the second end pressing plate of the other through the insulating plate.

[0011] In one embodiment, the electrolytic cell device further comprises an electrical connector, and two adjacent small electrolytic cells are connected via the electrical connector, and two ends of the electrical connector are respectively connected to the positive electrode of one small electrolytic cell and the negative electrode of the other adjacent small electrolytic cell;

[0012] The electrical connector is at least one of a cable, a copper busbar, and a conductive plate, or a combination of multiple thereof.

[0013] In one embodiment, each of the small electrolytic cells is provided with a gas outlet pipe and at least one gas-liquid connecting pipe, and each of the gas-liquid connecting pipes is provided with a gas outlet portion, and the gas outlet portion is connected to the gas outlet pipe.

[0014] In one embodiment, the gas outlet pipe includes an oxygen gas outlet pipe and a hydrogen gas outlet pipe that are independently arranged.

[0015] In one embodiment, the gas-liquid connecting pipe is grounded.

[0016] In one embodiment, each of the small electrolytic cells is provided with a liquid inlet pipe, and the liquid inlet pipe is used to input electrolyte into the small electrolytic cell.

[0017] The technical solution of the present application arranges multiple small electrolytic cells in sequence along a first direction, and by providing an insulating plate between two adjacent small electrolytic cells, an integrated design of the multiple small electrolytic cells is achieved. This is used to reduce the overall footprint of the electrolytic cell device and lower costs by reducing the number of chambers in a single small electrolytic cell while ensuring the electrolytic cell capacity. The use of the insulating plate can also effectively avoid electrical short circuits between different small electrolytic cells.

[0018] Each small electrolytic cell has a positive electrode and a negative electrode. The positive electrode of the first of the multiple small electrolytic cells is used to connect to the positive electrode of the power supply, and the negative electrode of the last of the multiple small electrolytic cells is used to connect to the negative electrode of the power supply. The negative electrode of the previous small electrolytic cell is connected to the positive electrode of the next small electrolytic cell in turn, so that the multiple small electrolytic cells are electrically connected in series, which can effectively control the flow of current, thereby avoiding the problems of a large number of small chambers, serious diversion, and high current efficiency caused by the use of a single large electrolytic cell. By effectively controlling the flow of current, the distance that the current flows between the small electrolytic cells is reduced, the current loss in the electrolyte is reduced, and the bypass current is reduced. Since the larger the current, the higher the line loss, by effectively controlling the flow of current, the line loss can also be reduced, and the current efficiency and electrolysis efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of an embodiment of the electrolytic cell device provided in this application;

[0021] Figure 2 for Figure 1 Schematic diagram of the equivalent electrical model;

[0022] Figure 3 This is a schematic structural diagram of another embodiment of the electrolytic cell device provided in this application.

[0023] Description of Figure Numbers:

[0024] 100, tank body; 110, small electrolytic cell; 111, left tank; 112, right tank; 120, transmission board;

[0025] 210, insulation board;

[0026] 310, first outer end pressure plate; 320, second outer end pressure plate; 330, middle end pressure plate; 331, first end pressure plate; 332, second end pressure plate;

[0027] 410, gas outlet main pipe; 411, gas outlet; 420, gas-liquid connecting pipe; 430, liquid inlet main pipe; 431, electrolyte inlet;

[0028] 500. Power supply.

[0029] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0031] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0033] A larger electrolyzer capacity indicates a greater number of cells. During the electrolysis process, a portion of the current flows through the gas and liquid channels, generating heat. This current does not participate in the electrolysis reaction and is generally defined as bypass current. Bypass current is the primary cause of low electrolyzer current efficiency and the lower than theoretical hydrogen production. A larger electrolyzer capacity results in a greater number of cells, and bypass current is strongly correlated with the cell structure, electrode material, electrode connection, and number of cells. The greater the number of cells, the more severe the current diversion, leading to a more pronounced problem of low current efficiency.

[0034] In order to realize the integrated design of the electrolytic cell and improve the current efficiency while ensuring the capacity of the electrolytic cell, this application proposes an electrolytic cell device. Figures 1 to 3 The electrolytic cell device includes a plurality of small electrolytic cells 110 arranged in sequence along a first direction, with an insulating plate 210 disposed between two adjacent small electrolytic cells 110. Each small electrolytic cell 110 has a positive electrode and a negative electrode. The positive electrode of the first of the plurality of small electrolytic cells 110 is connected to the positive electrode of a power supply, and the negative electrode of the last of the plurality of small electrolytic cells 110 is connected to the negative electrode of a power supply. The negative electrode of the previous small electrolytic cell 110 is electrically connected to the positive electrode of the next next small electrolytic cell 110 in sequence.

[0035] Taking the electrolytic cell device including two small electrolytic cells as an example, the relevant technology generally sets the two small electrolytic cells of the electrolytic cell device into a parallel structure of one positive and two negative cells, but this structure will have problems of low voltage, high current, large line loss, and high cost of power supply devices. Different from the problems of low voltage, high current, large line loss, and high cost of power supply devices that may arise when it is set as a parallel structure of one positive and two negative cells, the multiple small electrolytic cells 110 of the present application are arranged in sequence along the first direction. The use of the insulating plate 210 can effectively avoid the problem of electrical short circuit between different small electrolytic cells 110. By arranging the insulating plate 210 between two adjacent small electrolytic cells 110, the integrated design of multiple small electrolytic cells 110 can be realized to ensure the capacity of the electrolytic cell and realize the integrated design of multiple small electrolytic cells. By reducing the number of small chambers in a single small electrolytic cell, the overall occupied space of the electrolytic cell device is reduced, thereby reducing costs.

[0036] The positive electrode of each of the multiple small electrolytic cells 110 is electrically connected to the negative electrode of the previous small electrolytic cell 110 in sequence, forming a cascade or series structure of electrolytic cells through this alternating connection. The electrical series connection of the multiple small electrolytic cells 110 ensures that current flows from the positive electrode of the previous small electrolytic cell 110 to the negative electrode of the next small electrolytic cell 110, achieving current continuity.

[0037] In the related art, although some electrolytic cell devices have two small electrolytic cells arranged in a series structure with one positive and one negative, this type of structure affects current efficiency due to the need for current diversion. Unlike the problem of uneven current distribution among different small electrolytic cells, increased bypass current, and affected current efficiency and electrolysis efficiency caused by only energizing two electrodes, one positive and one negative, each small electrolytic cell 110 of the present application has a positive electrode and a negative electrode. The negative electrode of the previous small electrolytic cell 110 is electrically connected to the positive electrode of the next small electrolytic cell in turn. By increasing or decreasing the number of small electrolytic cells 110, different production needs can be met.

[0038] It can be understood that each small electrolytic cell 110 in the present application has a positive electrode and a negative electrode. The positive electrode of the first small electrolytic cell among the multiple small electrolytic cells 110 is used to connect to the positive electrode of the power supply 500, and the negative electrode of the last small electrolytic cell 110 among the multiple small electrolytic cells 110 is used to connect to the negative electrode of the power supply 500. "Previous" and "next" refer to the relative positions of the multiple small electrolytic cells 110 formed in the series configuration, which can be specifically determined according to the direction of current. In the current direction, the positive electrode of the previous small electrolytic cell is connected to the negative electrode of the next small electrolytic cell. The current flows into the positive electrode of the first small electrolytic cell, passes through the electrolyte, and flows from the negative electrode of the first small electrolytic cell to the second positive electrode. This process is repeated until it flows out from the negative electrode of the last small electrolytic cell and returns to the negative electrode of the power supply 500. The negative electrode of the previous small electrolytic cell 110 is sequentially connected to the positive electrode of the next small electrolytic cell 110, so that multiple small electrolytic cells 110 are electrically connected in series. This effectively controls the flow of current, avoiding the problems of using a single large electrolytic cell, such as the large number of small chambers, severe current diversion, and high current efficiency. By effectively controlling the flow of current, the distance the current flows between small electrolytic cells is reduced, reducing current loss in the electrolyte and reducing bypass current. Because greater current leads to higher line losses, effectively controlling the flow of current can also reduce line losses, improving current efficiency and electrolysis efficiency.

[0039] In the embodiments of the present application, the positive electrode includes a transmission plate 120 for transmitting current to the electrolyte, a catalytic material, and connectors for connecting the transmission plate 120 to an external circuit. The same applies to the negative electrode. The electrodes used in this application can be configured based on actual needs and used as either positive or negative electrodes based on their electrical connections.

[0040] Optionally, the first direction refers to the direction from left to right along the length of the small electrolytic cell 110, and the multiple small electrolytic cells 110 are arranged in sequence from left to right along the first direction; or, the first direction refers to the direction from right to left along the length of the small electrolytic cell 110, and the multiple small electrolytic cells 110 are arranged in sequence from right to left along the first direction. Taking the example where the first direction refers to the direction from left to right along the length of the small electrolytic cell 110, the first of the multiple small electrolytic cells is arranged close to the leftmost side, the last of the multiple small electrolytic cells is arranged close to the rightmost side, and the previous small electrolytic cell and the next small electrolytic cell in the cascade sequence are arranged adjacent to each other, the previous small electrolytic cell is arranged close to the left side, and the next small electrolytic cell is arranged close to the right side. The embodiment where the first direction refers to the direction from right to left along the length of the small electrolytic cell can be referred to accordingly and will not be repeated here.

[0041] In one embodiment, the electrolytic cell device further includes an electrical connector, and two adjacent small electrolytic cells 110 are connected via the electrical connector, with both ends of the electrical connector respectively connected to the positive electrode of one small electrolytic cell 110 and the negative electrode of the other adjacent small electrolytic cell 110 .

[0042] The preceding and succeeding small electrolytic cells in the cascade sequence are arranged adjacent to each other, with an electrical connector disposed between the two adjacent small electrolytic cells. The connector has two connection ends: one end is connected to the negative electrode of the preceding small electrolytic cell, and the other end is connected to the positive electrode of the succeeding small electrolytic cell. Optionally, the connector comprises at least one of a cable, a copper busbar, and a conductive plate, or a combination thereof. Specifically, the connector can be made of any conductive material, without limitation.

[0043] In one embodiment, each small electrolytic cell 110 is provided with a gas outlet pipe and at least one gas-liquid connecting pipe 420 , and each gas-liquid connecting pipe 420 is provided with a gas outlet portion connected to the gas outlet pipe.

[0044] Optionally, the gas outlet pipes of each small electrolytic cell 110 are independently arranged to prevent the hydrogen and oxygen produced by different small electrolytic cells 110 from mixing. The gas outlet pipes of multiple small electrolytic cells 110 are interconnected through a gas outlet main pipe 410. The gas outlet main pipe 410 has a gas outlet 411 for centrally collecting the generated hydrogen and oxygen, so as to facilitate centralized management of the gases produced by multiple small electrolytic cells 110 and further optimize the integrated design of the electrolytic cell. The gas-liquid connecting pipe 420 is connected to the gas outlet pipe. Specifically, the gas outlet portion of the gas-liquid connecting pipe 420 is connected to the gas outlet main pipe 410 to facilitate the extraction of the gas generated during the electrolysis process and facilitate subsequent treatment of the gas.

[0045] To prevent gas mixing, in one embodiment, the gas outlet pipes include independently arranged oxygen and hydrogen outlet pipes. The positive and negative electrodes of each small electrolytic cell 110 produce corresponding gases, with the cathode (negative electrode) producing hydrogen and the anode (positive electrode) producing oxygen. By independently arranging hydrogen and oxygen outlet pipes in each small electrolytic cell 110, the gases produced by the electrolytic cell can be effectively collected, optimizing electrolysis efficiency and increasing the purity of the collected gas.

[0046] For safety reasons, in one embodiment, the gas-liquid connecting pipe 420 is grounded. Grounding the gas-liquid connecting pipe 420 allows static electricity generated by gas flow during electrolysis to be safely discharged to the ground, reducing static electricity accumulation and electrical interference. This allows the electrolytic cell to operate stably and safely, ensuring its safety and compliance.

[0047] Optionally, grounding may be achieved using a grounding rod, a grounding wire, or other appropriate grounding connectors, which are not limited herein.

[0048] In one embodiment, each small electrolytic cell 110 is provided with a liquid inlet pipe for supplying electrolyte to the small electrolytic cell 110. The liquid inlet pipes of the multiple small electrolytic cells 110 are interconnected via a liquid inlet manifold 430. The liquid inlet manifold 430 has a liquid inlet port. When used in an alkali cell, the liquid inlet port of the liquid inlet manifold 430 serves as the electrolyte inlet 431. Providing an independent liquid inlet pipe for each small electrolytic cell 110 ensures that the electrolyte is evenly distributed to each small electrolytic cell 110, thereby improving electrolysis efficiency.

[0049] As an optional embodiment of the present application, two adjacent small electrolytic cells 110 are disposed on both sides of the insulating plate 210 and are connected into one through the insulating plate 210 .

[0050] It can be understood that in this embodiment, multiple small electrolytic cells 110 are independently arranged. When there are two independent small electrolytic cells 110, the two small electrolytic cells 110 are respectively arranged on the left and right sides of the insulating plate 210 as the left cell 111 and the right cell 112, and are connected to form a whole through the insulating plate 210; when there are multiple independent small electrolytic cells 110, the multiple small electrolytic cells 110 are arranged in sequence along the first direction, and the next small electrolytic cell 110 is connected to the previous small electrolytic cell 110 through the insulating plate 210 to form a whole. Each small electrolytic cell 110 is independently provided with a positive electrode and a negative electrode, and the positive electrode of the next small electrolytic cell 110 is electrically connected to the negative electrode of the previous small electrolytic cell 110 in sequence to form a cascade structure or a series structure of electrolytic cells.

[0051] Optionally, when the number of small electrolytic cells 110 is not less than 3, the number of insulating plates is not less than 2. When there are multiple insulating plates 210, the multiple insulating plates 210 are independently arranged between two adjacent small electrolytic cells 110; or, the multiple insulating plates 210 are connected into one body, and as a whole, the multiple small electrolytic cells 110 are connected in sequence.

[0052] In this embodiment, each of the small electrolytic cells 110 includes a first end pressure plate and a second end pressure plate spaced apart along a first direction. The first end pressure plate 331 of one of the two adjacent small electrolytic cells 110 is connected to the second end pressure plate 332 of the other via an insulating plate 210. The end pressure plates serve as the end structures of the small electrolytic cells 110, providing support and spacing. The end pressure plates can be made of metal plates of any material.

[0053] It should be noted that the first of the multiple small electrolytic cells 110 is arranged near the leftmost side, and the last of the multiple small electrolytic cells is arranged near the rightmost side. Specifically, according to actual needs, the first end pressure plate and the second end pressure plate on both sides of each small electrolytic cell can be set to the same size; alternatively, the first end pressure plate of the first of the multiple small electrolytic cells is used as the first outer end pressure plate 310, the second end pressure plate of the last of the multiple small electrolytic cells is used as the second outer end pressure plate 320, and the other end pressure plates of the multiple small electrolytic cells are used as the middle end pressure plate 330. The size of each small electrolytic cell 110, the thickness of the insulating plate between adjacent small electrolytic cells 110, the size of the end pressure plates of each small electrolytic cell 110, etc. can be the same or different; the size of the first outer end pressure plate 310, the second outer end pressure plate 320 and the size of the middle end pressure plate 330 can be the same or different; the specific setting can be based on actual conditions and is not limited here.

[0054] Each small electrolytic cell is independent of each other, which can effectively reduce bypass current and improve current efficiency. By adjusting the number of small electrolytic cells, they can be combined into electrolytic cell devices with different numbers of small electrolytic cells. This not only meets the usage requirements of different scenarios, but also allows a certain electrolytic cell to be replaced or maintained separately without affecting the entire system, effectively improving the reliability and flexibility of the system.

[0055] As another optional embodiment of the present application, the electrolytic cell device further includes a cell body 100 , and a plurality of small electrolytic cells 110 are disposed in the cell body 100 .

[0056] In this embodiment, the tank body 100 includes a plurality of end pressure plates, which are spaced apart along a first direction to enclose a small electrolytic cell 110 between two adjacent end pressure plates and the tank wall of the tank body 100. Specifically, the plurality of end pressure plates include a first outer end pressure plate 310, a second outer end pressure plate 320, and N-1 intermediate end pressure plates 330. The first outer end pressure plate 310 and the second outer end pressure plate 320 are disposed on opposite sides of the tank body 100 along the first direction. The plurality of small electrolytic cells 110 are sequentially spaced apart along the length of the electrolytic cell, with the first outer end pressure plate 310 disposed on the left side of the electrolytic cell and the second outer end pressure plate 320 disposed on the right side of the electrolytic cell. The intermediate end pressure plate 330 is provided in the tank body 100, and each intermediate end pressure plate 330 includes a first end pressure plate 331 and a second end pressure plate 332. The insulating plate 210 is embedded between the first end pressure plate 331 and the second end pressure plate 332, and is integrally provided with the first end pressure plate 331 and the second end pressure plate 332. The end pressure plate serves as the end structure of the multiple small electrolytic cells 110 of the electrolytic cell, and plays a supporting and spacing role. The end pressure plate can optionally be made of a metal plate of any material. By integrally providing the insulating plate 210 with the first end pressure plate 331 and the second end pressure plate 332, it is convenient to separate the small electrolytic cells 110 in the tank body 100, effectively simplifying the electrolytic cell structure and realizing the integrated design of the electrolytic cell. In this way, space can also be saved, the footprint of the electrolytic cell device can be reduced, and the stability of the overall structure can be ensured.

[0057] As a specific example of this application, refer to Figure 1 When the electrolytic cell device is used as an alkali cell and the number of insulating plates 210 is one, the multiple small electrolytic cells of the electrolytic cell device include a left cell 111 and a right cell 112, which are arranged on both sides of the insulating plate 210. The left cell 111 and the right cell 112 each have a positive electrode and a negative electrode. The positive electrode of the left cell 111 is used to connect to the positive electrode of the power supply 500, the negative electrode of the left cell 111 is electrically connected to the positive electrode of the right cell 112, and the negative electrode of the right cell 112 is used to connect to the negative electrode of the power supply 500.

[0058] Figure 2 for Figure 1Schematic diagram of the equivalent electrical model, wherein Urev1 and Urev2 are the equivalent reversible electrolysis voltages of the left tank 111 and the right tank 112, which may correspond to the minimum voltages required for the left tank 111 and the right tank 112 to produce hydrogen and oxygen respectively; Rshunt1 and Rshunt2 are the equivalent electrolyte path impedances (bypass impedances) of the left tank 111 and the right tank 112; Re1 and Re2 are the equivalent diaphragm electrode impedances of the left tank 111 and the right tank 112; ηact1 and ηact1 are the electrode overpotentials; Ca1 and Ca2 are the double-layer capacitances; Iin is the electrolytic cell input current, Ir1 is the electrolysis current of the left tank 111, Ir2 is the electrolysis current of the right tank 112, Is1 is the bypass current of the left tank 111, Is2 is the bypass current of the right tank 112, and Uin1 and Uin2 are the input voltages of the left tank 111 and the right tank 112. The electrolytic cell device of the present application is formed by combining two independent small electrolytic cells, a left cell 111 and a right cell 112. The left cell 111 and the right cell 112 are connected to form an electrical series structure, where Uin1 = Uin2 and Ir1 = Ir2. The left cell 111 and the right cell 112 are connected to form an electrical series structure, which can effectively reduce bypass current and improve current efficiency. The left cell 111 and the right cell 112 of the electrolytic cell independently electrolyze to produce hydrogen and oxygen. The output gases are collected and the electrical input is connected in series, making the electrolytic cell device as a whole exhibit high voltage and low current characteristics.

[0059] As another example, refer to Figure 3 When the electrolytic cell device is used as a PEM electrolytic cell or other electrolytic cell that can be electrically connected in series through multiple small electrolytic cells, the insulating plate 210 includes N-1 insulating plates 210, N is a positive integer not less than 3, and the insulating plate 210 is arranged between the first end pressure plate of one of two adjacent small electrolytic cells and the second end pressure plate of the other. The positive electrode of the first small electrolytic cell among the N small electrolytic cells 110 is used to connect to the positive electrode of the power supply 500, and the negative electrode of the Nth small electrolytic cell among the N small electrolytic cells 110 is used to connect to the negative electrode of the power supply 500. The positive electrodes of the second to N-1th small electrolytic cells 110 among the N are electrically connected to the negative electrode of the previous small electrolytic cell 110 in sequence, and the negative electrodes of the second to N-1th small electrolytic cells 110 among the N are electrically connected to the positive electrode of the next small electrolytic cell 110 in sequence, so as to form N small electrolytic cells 110 electrically connected in series. The N small electrolytic cells 110 of the electrolytic cell independently electrolyze to produce hydrogen and oxygen. Specifically, the size of the cell body 100, the number of insulating plates 210 provided, and the distance between the insulating plates 210 can be adjusted according to actual needs to separate the required number of small electrolytic cells 110 from the cell body 100. The output gases of the N small electrolytic cells 110 are collected and the electrical inputs are connected in series, so that the electrolytic cell device as a whole presents high voltage and low current characteristics.

[0060] The electrolytic cell device of the present application combines the advantages of a one-positive and two-negative parallel structure and a one-positive and one-negative series structure. It not only avoids the problems of low voltage, high current, large line loss, high cost of power supply components, and large floor space of the one-positive and two-negative parallel structure, but also avoids the problem of low current efficiency of the one-positive and one-negative series structure. The overall current efficiency is high, the electrical friendliness is good, and the feasibility is strong, which effectively improves the current efficiency of large-capacity electrolytic cells. By setting an insulating plate between two adjacent small electrolytic cells, an integrated design of multiple small electrolytic cells is realized, which not only saves floor space and reduces costs, but also can meet the needs of different scenarios by adjusting the number of small electrolytic cells, effectively enhancing the overall feasibility and meeting different electrolysis requirements.

[0061] The above description is merely an exemplary embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made using the contents of the present application specification and drawings under the technical concept of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. An electrolytic cell device, characterized in that: include: A plurality of small electrolytic cells are sequentially arranged along a first direction, with an insulating plate provided between two adjacent small electrolytic cells; Each of the small electrolytic cells has a positive electrode and a negative electrode. The positive electrode of the first of the multiple small electrolytic cells is used to connect to the positive electrode of the power supply, and the negative electrode of the last of the multiple small electrolytic cells is used to connect to the negative electrode of the power supply. The negative electrode of the previous one of the multiple small electrolytic cells is electrically connected to the positive electrode of the next one in turn.

2. The electrolytic cell device according to claim 1, characterized in that The two adjacent small electrolytic cells are arranged on both sides of the insulating plate and are connected into one body through the insulating plate.

3. The electrolytic cell device according to claim 1, characterized in that The electrolytic cell device further comprises a cell body, wherein the plurality of small electrolytic cells are arranged in the cell body.

4. The electrolytic cell device according to claim 1, wherein Each of the small electrolytic cells comprises a first end pressing plate and a second end pressing plate spaced apart along a first direction, and the first end pressing plate of one of two adjacent small electrolytic cells is connected to the second end pressing plate of the other through the insulating plate.

5. The electrolytic cell device according to claim 1, characterized in that The electrolytic cell device further comprises an electrical connector, through which two adjacent small electrolytic cells are connected, and two ends of the electrical connector are respectively connected to the positive electrode of one small electrolytic cell and the negative electrode of the other adjacent small electrolytic cell.

6. The electrolytic cell device according to any one of claims 1 to 5, characterized in that: Each of the small electrolytic cells is provided with an air outlet pipe and at least one gas-liquid connecting pipe, and each of the gas-liquid connecting pipes is provided with an air outlet portion, which is connected to the air outlet pipe.

7. The electrolytic cell device according to claim 6, characterized in that The gas outlet pipe comprises an oxygen gas outlet pipe and a hydrogen gas outlet pipe which are independently arranged.

8. The electrolytic cell device according to claim 6, characterized in that The gas-liquid connecting pipe is grounded.

9. The electrolytic cell device according to any one of claims 1 to 5, characterized in that: Each of the small electrolytic cells is provided with a liquid inlet pipe, and the liquid inlet pipe is used to input electrolyte into the small electrolytic cell.

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