Pole frame, pole plate and electrolytic bath

Abstract

A pole frame body comprises a first surface and a second surface arranged opposite to the first surface, and the first surface and the second surface are respectively provided with a first flow channel and a second flow channel which are different in height. A plurality of uniformly distributed liquid inlets penetrating through the first surface and the second surface and a plurality of uniformly distributed liquid distribution openings are formed in the lower part of the electrode frame body, the liquid distribution openings are used for distributing electrolyte, and a plurality of air outlets penetrating through the first surface and the second surface are formed in the upper part of the electrode frame body; the plurality of liquid distribution ports comprise first liquid distribution ports and second liquid distribution ports which are the same in number and are alternately distributed, the first liquid distribution ports and the second liquid distribution ports are respectively provided with first flow channel grooves and second flow channel grooves on the first surfaces and the second surfaces, and the heights of the first flow channel grooves and the second flow channel grooves are different; the first flow channel groove is communicated with the first flow channel, and the second flow channel groove is communicated with the second flow channel. The electrode frame provided by the utility model is used for electrolysis, so that the flow distribution of alkali liquor on two sides is more reasonable, the flow, the flow velocity and the temperature field in the electrolysis chamber are more uniform, the electrolysis efficiency can be improved, and the energy consumption can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic hydrogen production technology, specifically to an electrode frame, electrode plate, and electrolytic cell. Background Technology

[0002] Alkaline electrolysis for hydrogen production is currently the most mature and widely used green method, primarily utilizing the electrolysis of an electrolyte in an electrolyzer to produce hydrogen and oxygen. The electrode frame and plates are among the core components of the electrolyzer, significantly impacting its cost and performance. These components provide space for internal elements such as the electrolyte, diaphragm, electrodes, and catalyst. However, to increase electrolysis speed, current designs often maximize the size of the plates to increase the electrolysis area. However, with larger plates, uneven electrolyte distribution within the plate's internal flow field is prone to occur, leading to increased DC energy consumption and reduced electrolysis efficiency. Furthermore, the uniform flow channel height on both sides of existing electrode frames hinders electrolyte distribution. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention proposes an electrode frame. Using this electrode frame for electrolysis can make the flow rate, velocity, and temperature field within the electrolysis chamber more uniform, thereby improving electrolysis efficiency.

[0004] The technical solution of this utility model is implemented as follows:

[0005] An electrode frame includes an electrode frame body, the electrode frame body including a first surface and a second surface opposite to the first surface. The first surface and the second surface are respectively provided with a first flow channel and a second flow channel of different heights. The lower part of the electrode frame body is provided with a plurality of uniformly distributed liquid inlets and a plurality of uniformly distributed liquid distribution ports penetrating the first surface and the second surface. The liquid distribution ports are used to distribute the flow of electrolyte. The upper part of the electrode frame body is provided with a plurality of gas outlets penetrating the first surface and the second surface. The plurality of liquid distribution ports include a first liquid distribution port and a second liquid distribution port of the same number and alternately distributed. The first liquid distribution port and the second liquid distribution port are respectively provided with a first flow channel groove and a second flow channel groove of different heights on the first surface and the second surface. The first flow channel groove is connected to the first flow channel, and the second flow channel groove is connected to the second flow channel.

[0006] Preferably, the plurality of air outlets include an equal number of first air outlets and second air outlets, the first air outlets and second air outlets are respectively disposed on the left and right sides of the first surface, the first air outlets and second air outlets are respectively provided with a first air channel groove and a second air channel groove on the first surface and the second surface, the first air channel groove on the first surface is connected to the first flow channel, and the second air channel groove on the second surface is connected to the second flow channel.

[0007] Preferably, the electrode frame body is further provided with a first hole that penetrates the first surface and the second surface and has the dual functions of electrolyte distribution and assembly positioning, and a second hole that penetrates the first surface and the second surface and has the dual functions of gas outlet and assembly positioning. The first hole is located above the liquid distribution port, and the second hole is located below the gas outlet.

[0008] Preferably, there are two first holes and two second holes. The two first holes are respectively located on the left and right sides of the first surface, and the two second holes are also respectively located on the left and right sides of the first surface. The two first holes are respectively provided with a third flow channel groove and a fourth flow channel groove on the first surface and the second surface, respectively. The two second holes are respectively provided with a third air channel groove and a fourth air channel groove on the first surface and the second surface. The third flow channel groove and the third air channel groove on the first surface are connected to the first flow channel, and the fourth flow channel groove and the fourth air channel groove on the second surface are connected to the second flow channel.

[0009] Preferably, the number of liquid inlets is less than the number of liquid distribution ports, and a first liquid distribution port and a second liquid distribution port are respectively provided on both sides of the liquid inlets.

[0010] Preferably, the electrode frame body is annular, the liquid inlet and / or the liquid distribution port are arc-shaped waist holes extending circumferentially along the electrode frame body, and the air outlet is an arc-shaped waist hole extending circumferentially along the electrode frame body.

[0011] Preferably, the liquid dispensing ports are distributed within the range of the first left-right symmetrical angle on the first surface of the annular polar frame body, and the first left-right symmetrical angle is a first central angle symmetrical about the virtual line formed by the center point and the lowest point of the first surface as the axis of symmetry.

[0012] Preferably, the air outlets are distributed within the range of the second left-right symmetrical angle of the first surface of the annular polar frame body, and the second left-right symmetrical angle is a second central angle symmetrical about the virtual line formed by the center point and the lowest point of the first surface as the axis of symmetry.

[0013] A second aspect of this utility model provides an electrode plate, including a main electrode plate and the aforementioned electrode frame.

[0014] Preferably, the center of the tongue plate connecting the pole frame and the main pole plate is offset from the center of the thickness of the pole frame, and the main pole plate is a papillary structure or a plate mesh structure.

[0015] A third aspect of this utility model also provides an electrolytic cell comprising a plurality of the aforementioned electrode plates, wherein the plurality of electrode plates are stacked and sealed together.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This invention provides an electrode frame that, by setting several uniformly distributed liquid inlets and several uniformly distributed liquid distribution outlets, and by setting an equal number of alternating first and second liquid distribution outlets, ensures a more uniform flow rate, velocity, and temperature field when the electrolyte enters the anode and cathode sides of the electrolysis chamber through the first and second liquid distribution outlets, respectively, thereby improving electrolysis efficiency. Furthermore, by connecting the first liquid distribution outlet to the first flow channel groove and the first flow channel on the first surface, and the second liquid distribution outlet to the first flow channel groove and the second flow channel on the second surface, the electrolyte can be evenly distributed on the first and second surfaces of the electrode frame body. This ensures sufficient contact between the electrode surface and the electrolyte, and that the electrolyte concentration is relatively consistent throughout, which is beneficial for improving the efficiency and stability of the electrolysis reaction and avoiding situations where the local reaction is too strong or too weak due to uneven electrolyte distribution. Simultaneously, the presence of first and second flow channel grooves of different heights on both sides for distributing the electrolyte allows for the rational distribution of the alkali solution flow rate. Furthermore, the presence of several evenly distributed air outlets on the upper part of the frame body facilitates gas discharge. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is the front view of the polar frame;

[0020] Figure 2 This is the rear view of the polar frame;

[0021] Figure 3 This is a three-dimensional diagram of the electrode plates.

[0022] Attached image labels:

[0023] 1. Frame body; 10. First flow channel; 101. Second flow channel; 11. Liquid inlet; 12. Liquid distribution port; 121. First liquid distribution port; 122. Second liquid distribution port; 123. First flow channel groove; 124. Second flow channel groove; 13. Air outlet; 131. First air outlet; 132. Second air outlet; 133. First air channel groove; 134. Second air channel groove; 14. Second hole; 141. Third flow channel groove; 142. Fourth flow channel groove; 15. Second hole; 151. Third air channel groove; 152. Fourth air channel groove; 16. First surface; 161. Center point; 162. Virtual line; 163. First central angle; 164. Second central angle; 17. Second surface;

[0024] 2. Main electrode plate; 3. Tongue plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] See Figures 1 to 2This utility model discloses an electrode frame, including an electrode frame body 1. The electrode frame body 1 includes a first surface 16 and a second surface 17 disposed opposite to the first surface 16. The first surface 16 and the second surface 17 are respectively provided with a first flow channel 10 and a second flow channel 101 of different heights for electrolyte flow. The lower part of the electrode frame body 1 is provided with a plurality of evenly distributed liquid inlets 11 penetrating the first surface 16 and the second surface 17 and a plurality of evenly distributed liquid distribution ports 12. The liquid distribution ports 12 are used to distribute the flowing electrolyte. The upper part of the electrode frame body 1 is provided with a penetrating... The first surface 16 and the second surface 17 have a plurality of evenly distributed air outlets 13 and a plurality of liquid distribution ports 12, including a number of first liquid distribution ports 121 and second liquid distribution ports 122 that are equally distributed and alternately distributed. The first liquid distribution ports 121 and the second liquid distribution ports 122 are respectively provided with a first flow channel groove 123 and a second flow channel groove 124 on the first surface 16 and the second surface 17. The first flow channel groove 123 and the second flow channel groove 124 have different heights. The first flow channel groove 123 is connected to the first flow channel 10, and the second flow channel groove 124 is connected to the second flow channel 101. Specifically: Inlet 11 is connected to an external pipe, and electrolyte enters the electrolytic cell through inlet 11 from the external pipe. First liquid distribution port 121 and second liquid distribution port 122 are connected to the anode side and cathode side, respectively, so that electrolyte inside the electrolytic cell enters the anode side and cathode side of the electrolysis chamber through the first liquid distribution port 121 and second liquid distribution port 122, respectively. The same number of first liquid distribution ports 121 and second liquid distribution ports 122 are respectively provided with first flow channel grooves 123 and second flow channel grooves 124 of different heights on the first surface 16 and the second surface 17, so that the number of first flow channel grooves 123 and second flow channel grooves 124 is equal. Specifically, in this embodiment, the height of the second flow channel groove 124 is higher than the height of the first flow channel groove 123.

[0029] It should be noted that, in this embodiment, the first surface 16 of the polar frame body 1 refers to the surface with the polar frame body 1 having ... body 1 having the polar frame body body 1 Figure 1 The perspective is the side viewed from the front.

[0030] In this embodiment, by providing several uniformly distributed liquid inlets 11 and several uniformly distributed liquid distribution ports 12 at the bottom of the electrode frame body 1, and by providing the same number of alternating first liquid distribution ports 121 and second liquid distribution ports 122, the flow distribution of the electrolyte inside the electrolytic cell when entering the anode side and cathode side of the electrolysis chamber through the first liquid distribution ports 121 and the second liquid distribution ports 122 is more reasonable, and the flow rate and temperature field are more uniform, thereby improving the electrolysis efficiency. In addition, by providing the first liquid distribution port 121 connected to the first flow channel groove 123 and the first flow channel 10 on the first surface 16, and the second liquid distribution port 122 connected to the second flow channel groove 124 and the second flow channel 101 on the second surface 17 (i.e., the anode flow channel and the cathode flow channel are not connected to each other), the electrolyte can be uniformly distributed on the first surface 16 and the second surface 17 of the electrode frame body 1. This ensures sufficient contact between the electrode surface and the electrolyte, and that the electrolyte concentration is relatively uniform throughout, which is beneficial for improving the efficiency and stability of the electrolysis reaction and avoiding situations where the reaction is too strong or too weak due to uneven electrolyte distribution. Furthermore, the presence of several evenly distributed gas outlets 13 on the upper part of the electrode frame body 1 facilitates gas discharge.

[0031] Furthermore, the plurality of gas outlets 13 include an equal number of first gas outlets 131 and second gas outlets 132. The first gas outlets 131 and second gas outlets 132 are respectively disposed on the left and right sides of the first surface 16. The first gas outlets 131 and second gas outlets 132 are respectively provided with first gas channel grooves 133 and second gas channel grooves 134 of different heights on the first surface 16 and the second surface 17. The first gas channel groove 133 on the first surface 16 communicates with the first flow channel 10, and the second gas channel groove 134 on the second surface 17 communicates with the second flow channel 101. Specifically, in this embodiment, the height of the second gas channel groove 134 is higher than the height of the first gas channel groove 133, and the first gas outlets 131 and second gas outlets 132 are respectively oxygen gas outlets and hydrogen gas outlets.

[0032] In this embodiment, by setting the first gas outlet 131 and the second gas outlet 132 on the left and right sides of the first surface 16, respectively, and explicitly designating them as oxygen and hydrogen gas outlets, effective separation of hydrogen and oxygen in physical space can be achieved. During the generation of hydrogen and oxygen in the water electrolysis cell, the two gases are prevented from mixing during the gas outlet stage, improving gas purity and facilitating subsequent separate collection and utilization of hydrogen and oxygen. Furthermore, the first gas outlet 131 and the second gas outlet 132 are respectively provided with first gas channel grooves 133 and 134 of different heights on the first surface 16 and the second surface 17, with the second gas channel groove 134 being higher than the first gas channel groove 133, thus providing independent flow channels for hydrogen and oxygen respectively. This helps reduce mutual interference and turbulence of gases within the electrode frame body 1, allowing gases to flow more smoothly from the first flow channel 10 and the second flow channel 101 to the corresponding gas outlets, thereby improving gas collection efficiency.

[0033] Furthermore, the electrode frame body 1 is also provided with a first hole 14 that penetrates the first surface 16 and the second surface 17 and has the dual functions of electrolyte distribution and assembly positioning, and a second hole 15 that penetrates the first surface 16 and the second surface 17 and has the dual functions of gas outlet and assembly positioning. The first hole 14 is located above the liquid distribution port 12, and the second hole 15 is located below the gas outlet 13.

[0034] Furthermore, there are two first holes 14 and two second holes 15. The two first holes 14 are respectively located on the left and right sides of the first surface 16, and the two second holes 15 are also respectively located on the left and right sides of the first surface 16. The two first holes 14 are respectively provided with a third flow channel groove 141 and a fourth flow channel groove 142 on the first surface 16 and the second surface 17. The two second holes 15 are respectively provided with a third air channel groove 151 and a fourth air channel groove 152 on the first surface 16 and the second surface 17. The third flow channel groove 141 and the third air channel groove 151 on the first surface 16 are connected to the first flow channel 10, and the fourth flow channel groove 142 and the fourth air channel groove 152 on the second surface 17 are connected to the second flow channel 101.

[0035] It should be noted that the heights of the flow channel grooves and air channel grooves on the same surface are the same, that is: the heights of the first flow channel groove 123, the first air channel groove 133, the third flow channel groove 141 and the third air channel groove 151 on the first surface 16 are the same, and the heights of the second flow channel groove 124, the second air channel groove 134, the fourth flow channel groove 142 and the fourth air channel groove 152 on the second surface 17 are the same.

[0036] It should be noted that in this embodiment, the left and right sides of the first surface 16 refer to the two sides of the virtual lines 162 that divide the first surface 16 into two identical left and right sides along the center point 161 of the first surface 16.

[0037] In this embodiment, by providing a first hole 14 that serves both electrolyte distribution and assembly positioning functions, and by providing a second hole 15 that serves both gas outlet and assembly positioning functions, the assembly accuracy of the electrolytic cell is improved, and the range of electrolyte entry and gas exit is increased, making the flow rate and temperature of the electrolysis chamber more uniform, thereby improving the electrolysis efficiency.

[0038] It should be noted that in this embodiment, the electrolyte distributed by the first liquid distribution port 121 enters the anode side, and the first gas outlet 131 is an oxygen outlet. Then, the electrolyte distributed by the second liquid distribution port 122 enters the cathode side, and the first gas outlet 132 is a hydrogen outlet. Thus, the ports entering the same side (anode side or cathode side) of the electrolysis chamber only have flow channel grooves or gas channel grooves on one side, reducing the risk of gas crosstalk between the two sides (anode side and cathode side).

[0039] Furthermore, the number of liquid inlets 11 is less than the number of liquid distribution ports 12, the width of the liquid inlets 11 is greater than the width of the liquid distribution ports 12, and a first liquid distribution port 121 and a second liquid distribution port 122 are respectively provided on both sides of the liquid inlets 11. Specifically, in this embodiment, there are three liquid inlets 11 and six liquid distribution ports 12.

[0040] In this embodiment, the number of inlets 11 is less than the number of liquid distribution ports 12, and the inlets are wider. This design allows the electrolyte to form a larger buffer area at the inlets 11 after entering the electrode frame body 1, and then be distributed through multiple liquid distribution ports 12. After the electrolyte accumulates a certain pressure at the inlets 11, it flows out from the first liquid distribution port 121 and the second liquid distribution port 122 on both sides, which helps to evenly distribute the electrolyte to the anode and cathode sides of the electrolysis chamber, avoiding insufficient or excessive electrolyte supply in local areas, ensuring that the electrode reaction proceeds uniformly across the entire electrode surface, and improving the performance and efficiency of the electrolytic cell.

[0041] Furthermore, the electrode frame body 1 is annular in structure, and the liquid inlet 11 and / or liquid distribution port 12 are arc-shaped waist-shaped holes extending circumferentially along the electrode frame body 1. This increases the cross-sectional size of the liquid inlet 11 and liquid distribution port 12, allowing more electrolyte to be introduced in the same amount of time and increasing the electrolyte injection rate. Additionally, the gas outlet is also an arc-shaped waist-shaped hole extending circumferentially along the electrode frame body 1. This increases the cross-sectional size of the gas outlet 13, allowing more gas to be output in the same amount of time.

[0042] Furthermore, a number of liquid distribution ports 12 are distributed within the range of the first left-right symmetrical angle of the first surface 16 of the annular polar frame body 1. The first left-right symmetrical angle is the first central angle 163 symmetrical about the virtual line 162 formed by the center point (center of the circle) 161 and the lowest point of the first surface 16. In this embodiment, the left-right symmetrical distribution is for a smoother liquid flow field.

[0043] Furthermore, several of the air outlets 13 are distributed within the range of the second left-right symmetrical angle of the first surface 16 of the annular pole frame body 1. The second left-right symmetrical angle is a second central angle 164 symmetrical about the virtual line 162 formed by the center point (center of the circle) 161 and the highest point of the first surface 16 as the axis of symmetry.

[0044] It should be noted that, during the design, the angles of the first central angle 163 and the second central angle 164 are as large as possible, so that more liquid distribution ports 12 and gas outlets 13 can be distributed. In this embodiment, the first central angle 163 and the second central angle 164 are 100°.

[0045] In this embodiment, the symmetrical distribution is intended to ensure smoother airflow, and the liquid distribution port 12 and the air outlet 13 are positioned above and below each other in the diametrical direction of an annular frame body 1. Figure 1 (From the perspective of the pole frame body 1), thus forming a symmetrical upper and lower part can minimize the accumulation of gas in the upper part and the residue of alkali at the bottom.

[0046] This embodiment also provides an electrode plate, including a main electrode plate 2 and the aforementioned electrode frame. The center of the tongue plate 3 connecting the electrode frame and the main electrode plate 2 is offset at the center of the electrode frame's thickness. Even though the height of the cathode-side chamber is slightly greater than the height of the anode-side chamber, in the alkaline water electrolysis hydrogen production process, the cathode reaction involves water molecules gaining electrons to generate hydrogen and hydroxide ions, while the anode reaction involves hydroxide ions losing electrons to generate oxygen and water. The cathode reaction produces a large number of hydrogen bubbles. To ensure smooth hydrogen evolution and reduce bubble accumulation within the chamber, more space is needed for the hydrogen to rise. Offsetting the center of the tongue plate increases the height of the cathode-side chamber, which not only increases the flow rate of electrolyte entering the cathode side but also allows hydrogen to exit more smoothly through the gas passage, improving gas collection efficiency. It also helps reduce pressure unevenness caused by gas accumulation, optimizes the gas-liquid flow distribution within the electrolyzer, and improves electrolysis efficiency.

[0047] The electrode plate provided in this embodiment, by adopting the above-mentioned electrode frame, ensures that the flow distribution of the electrolyte inside the electrolytic cell is more reasonable and the flow rate and temperature field are more uniform when it enters the anode side and cathode side of the electrolysis chamber through the first liquid distribution port 121 and the second liquid distribution port 122 respectively, thereby improving the electrolysis efficiency.

[0048] The main electrode plate 2 has a structure including, but not limited to, a nipple structure or a plate-mesh structure to reduce contact resistance and make the electrolyte distribution more uniform, thereby reducing the DC energy consumption of the electrolytic cell. The material of the main electrode plate 2 includes, but is not limited to, carbon steel. The main electrode plate 2 is circular in shape. It is understood that the thickness and size of the main electrode plate 2 can be adjusted according to the dimensions of the electrode frame and the electrolytic cell; this embodiment does not impose specific limitations on this.

[0049] This embodiment also provides an electrolytic cell, including multiple electrodes as described above, which are stacked and sealed together. That is, an anode chamber or a cathode chamber is formed between two adjacent electrodes, and the anode and cathode chambers are arranged alternately to generate oxygen or hydrogen. It should be noted that the anode chamber is the space for the oxidation reaction of the electrolyte, and the cathode chamber is the space for the hydrogenation reaction of the electrolyte. It should also be noted that the number of electrodes can be designed according to actual conditions, and this embodiment does not impose specific limitations on this.

[0050] In this embodiment, the main electrode 2 has a papillary structure. Using this electrode, top-to-top or top-to-bottom chambers can be formed. Specifically, when the papillary portions of two electrodes are joined together to form reliable multi-point electrical contact in a top-to-top configuration, a top-to-top chamber is constituted. This structure helps reduce the contact resistance of the internal components of the chamber, resulting in a more uniform current distribution and thus improving electrolysis efficiency. Simultaneously, it also helps promote uniform flow of liquid and gas within the chamber, reducing problems such as localized overheating and gas accumulation.

[0051] Unlike top-to-top chambers, top-to-bottom chambers combine the papillary structure of one electrode with the relatively smooth bottom portion of the other. This combination can create different flow and electric field distributions within the chamber. For example, in terms of flow, the difference in shape between the papillary structure and the smooth bottom will result in different flow paths and velocity distributions of the electrolyte within the chamber, potentially affecting the mass exchange process between the electrolyte and the electrode surface, and thus influencing the electrolysis reaction. Regarding the electric field distribution, the top-to-bottom structure may lead to uneven distribution of the electric field intensity within the chamber, thereby affecting the rate and efficiency of the electrolysis reaction.

[0052] The electrolytic cell provided in this embodiment has higher efficiency and a longer service life.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A polar frame, comprising a polar frame body (1), characterized in that, The electrode frame body (1) includes a first surface (16) and a second surface (17) opposite to the first surface (16). The first surface (16) and the second surface (17) are respectively provided with a first flow channel (10) and a second flow channel (101) of different heights. The lower part of the electrode frame body (1) is provided with a plurality of uniformly distributed liquid inlets (11) penetrating the first surface (16) and the second surface (17) and a plurality of uniformly distributed liquid distribution ports (12). The liquid distribution ports (12) are used to distribute electrolyte. The upper part of the electrode frame body (1) is provided with a penetrating first surface (16). The second surface (17) has a plurality of air outlets (13) and a plurality of liquid distribution ports (12), including a first liquid distribution port (121) and a second liquid distribution port (122) of the same number and alternately distributed. The first liquid distribution port (121) and the second liquid distribution port (122) are respectively provided with a first flow channel groove (123) and a second flow channel groove (124) of different heights on the first surface (16) and the second surface (17). The first flow channel groove (123) is connected to the first flow channel (10), and the second flow channel groove (124) is connected to the second flow channel (101).

2. The pole frame according to claim 1, characterized in that, The plurality of air outlets (13) include an equal number of first air outlets (131) and second air outlets (132). The first air outlets (131) and second air outlets (132) are respectively disposed on the left and right sides of the first surface (16). The first air outlets (131) and second air outlets (132) are respectively provided with first air passage grooves (133) and second air passage grooves (134) of different heights on the first surface (16) and the second surface (17). The first air passage groove (133) on the first surface (16) is connected to the first flow channel (10), and the second air passage groove (134) on the second surface (17) is connected to the second flow channel (101).

3. The pole frame according to claim 2, characterized in that, The electrode frame body (1) is also provided with a first hole (14) that penetrates the first surface (16) and the second surface (17) and has the dual functions of electrolyte distribution and assembly positioning, and a second hole (15) that penetrates the first surface (16) and the second surface (17) and has the dual functions of gas outlet and assembly positioning. The first hole (14) is located above the liquid distribution port (12), and the second hole (15) is located below the gas outlet (13).

4. The pole frame according to claim 3, characterized in that, There are two first holes (14) and two second holes (15). The two first holes (14) are respectively located on the left and right sides of the first surface (16), and the two second holes (15) are also respectively located on the left and right sides of the first surface (16). The two first holes (14) have a third flow channel groove (141) and a fourth flow channel groove (142) of different heights on the first surface (16) and the second surface (17), respectively. The two second holes (15) have a third air channel groove (151) and a fourth air channel groove (152) of different heights on the first surface (16) and the second surface (17), respectively. The third flow channel groove (141) and the third air channel groove (151) on the first surface (16) are connected to the first flow channel (10), and the fourth flow channel groove (142) and the fourth air channel groove (152) on the second surface (17) are connected to the second flow channel (101).

5. The pole frame according to claim 1, characterized in that, The number of liquid inlets (11) is less than the number of liquid distribution ports (12), and a first liquid distribution port (121) and a second liquid distribution port (122) are respectively provided on both sides of the liquid inlets (11).

6. The pole frame according to claim 1, characterized in that, The pole frame body (1) is annular in structure, the liquid inlet (11) and / or the liquid distribution port (12) are arc-shaped waist holes and extend circumferentially along the pole frame body (1), and the air outlet (13) is an arc-shaped waist hole and extends circumferentially along the pole frame body (1).

7. The pole frame according to claim 6, characterized in that, Several liquid dispensing ports (12) are distributed within the range of the first left-right symmetrical angle of the first surface (16) of the annular polar frame body (1). The first left-right symmetrical angle is the first central angle (163) symmetrical about the virtual line (162) formed by the center point (161) and the lowest point of the first surface (16).

8. The pole frame according to claim 7, characterized in that, Several of the air outlets (13) are distributed within the range of the second left-right symmetrical angle of the first surface (16) of the annular polar frame body (1). The second left-right symmetrical angle is the second central angle (164) symmetrical about the virtual line (162) formed by the center point (161) and the highest point of the first surface (16).

9. An electrode plate, characterized in that, It includes a main electrode plate (2) and an electrode frame as described in any one of claims 1-8, wherein the center of the tongue plate (3) connected to the main electrode plate (2) is offset from the center of the thickness of the electrode frame body (1), and the main electrode plate (2) is a papillary structure or a plate mesh structure.

10. An electrolytic cell, characterized in that, It includes multiple electrode plates as described in claim 9, wherein the multiple electrode plates are stacked and sealed together.

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