Polar plate runner structure for producing hydrogen by electrolyzing water

Abstract

The utility model discloses a polar plate runner structure for producing hydrogen by electrolyzing water. The polar plate runner structure comprises a polar plate body, the polar plate body is fixedly arranged on the polar plate frame; the polar plate body is divided into a cathode polar plate and an anode polar plate, and the cathode polar plate and the anode polar plate are arranged in a mirror image manner; the cathode plate and the anode plate are formed by punching plates; the cathode plate is provided with a cathode flow channel, the cathode flow channel comprises a cathode reaction area, a cathode confluence area and a cathode outlet, the cathode outlet is located at the left side of the top of the cathode plate, and the anode plate is provided with an anode flow channel; a traditional polar plate is divided into the polar plate frame and the polar plate body, the polar plate frame and the polar plate body are used in cooperation, the polar plate frame with the simple structure is adopted to bear longitudinal pressure borne by the polar plate when the polar plate forms an electrolytic bath and play a sealing role, the polar plate body with the complex structure is formed in a punching mode, the machining process and technology are simplified, and the production cost is reduced. And the cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of hydrogen production by electrolyzing water, in particular to a plate flow channel structure for hydrogen production by electrolyzing water. Background Technique

[0002] Hydrogen production by electrolyzing water is a relatively convenient method for producing hydrogen. Direct current is passed through an electrolytic cell filled with electrolyte, and water molecules undergo an electrochemical reaction on the electrodes, decomposing into hydrogen and oxygen.

[0003] For example, the patent with the authorization announcement number CN221398086U discloses a bipolar plate sealing structure for a PEM electrolytic cell, belonging to the field of hydrogen production by electrolyzing water, and solves the problems of imperfect bipolar plate design and poor sealing performance. The bipolar plate sealing structure includes a bipolar plate with an anode surface on the front and a cathode surface on the back, as well as cover plates and sealing rings arranged outside the bipolar plate. An anode inlet, an inlet distribution area, a first reaction area flow channel, a secondary distribution area, a second reaction area flow channel, an outlet distribution area, and an anode outlet are sequentially arranged on the anode surface of the bipolar plate. A first cathode outlet, a first distribution area, a first flow channel area, a secondary flow division area, a second flow channel area, a second distribution area, and a second cathode outlet are sequentially arranged on the cathode surface of the bipolar plate. The cover plates are respectively arranged in the areas where the above-mentioned anode inlet, anode outlet, first cathode outlet, and second cathode outlet are located, and cover the inlet distribution area, outlet distribution area, first distribution area, and second distribution area. The cover plates are used in matching with the sealing rings.

[0004] The above patent effectively improves the electrode performance without increasing the catalyst area. The use of an internal flow channel structure reduces the processing difficulty of the metal bipolar plate and lowers the production cost; however, the disadvantage of the above patent is that the currently common processing technology for such bipolar plates is the cutting processing method, which uses mechanical cutting tools to cut and punch the titanium plate, resulting in a large waste during the processing.

[0005] Therefore, it is necessary for us to improve such a structure to overcome the above defects. Content of the Utility Model

[0006] The purpose of the utility model is to provide a plate flow channel structure for hydrogen production by electrolyzing water to solve the problems put forward in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] The plate flow channel structure for hydrogen production by electrolyzing water includes a plate body; the plate body is fixedly installed on a plate frame; the plate body is divided into a cathode plate and an anode plate, and the cathode plate and the anode plate are arranged in a mirror image of each other; both the cathode plate and the anode plate are formed by stamping a plate; a cathode flow channel is provided on the cathode plate, and the cathode flow channel includes a cathode reaction area, a cathode current collecting area, and a cathode outlet, and the cathode outlet is located at the upper left position of the cathode plate. An anode flow channel is provided on the anode plate, and the anode flow channel includes an anode reaction area, an anode current collecting area, and an anode outlet, and the anode outlet is located at the upper right position of the anode plate.

[0009] Further, a plurality of first partitions are vertically arranged in the cathode reaction area, and a plurality of second partitions arranged in a bent shape are provided in the cathode current collecting area, and the lower ends of the second partitions are connected to the tops of the first partitions.

[0010] Still further, the first partitions divide the cathode reaction area into a plurality of first diversion channels, and at the same time the second partitions divide the cathode into a plurality of second diversion channels. The second diversion channels are arranged in a bent shape, the lower ends of the second diversion channels are communicated with the first diversion channels, and the tops of the second diversion channels converge to the cathode outlet.

[0011] Further, a first water channel is further provided in the middle of the top of the cathode plate, and an anode gas passage is provided on the right side of the top of the cathode plate.

[0012] Further, a plurality of third partitions are vertically arranged in the anode reaction area, and a plurality of fourth partitions arranged in a bent shape are provided in the anode current collecting area, and the lower ends of the fourth partitions are connected to the tops of the third partitions.

[0013] Still further, the third partitions divide the anode reaction area into a plurality of third diversion channels, and at the same time the fourth partitions divide the anode into a plurality of fourth diversion channels. The fourth diversion channels are arranged in a bent shape, the lower ends of the fourth diversion channels are communicated with the third diversion channels, and the tops of the fourth diversion channels converge to the anode outlet.

[0014] Still further, a second water channel is further provided in the middle of the top of the anode plate, and a cathode gas passage is provided on the left side of the top of the anode plate.

[0015] Further, the plate frame is a rectangular frame body, and an installation groove is provided inside the plate frame, and an annular slot is provided at the edge of the installation groove. At the same time, a plug board is bent backward at the edge of the plate body.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] The traditional electrode plate is divided into an electrode plate frame and an electrode plate body. The electrode plate frame and the electrode plate body are used in cooperation. In this solution, an electrode plate frame with a simple structure is adopted to bear the longitudinal pressure when the electrode plates form an electrolytic cell and play a sealing role, while the electrode plate body with a complex structure is formed by stamping, which simplifies the processing process and technology, greatly reduces the cost, and also reduces the waste of materials during the processing process. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the electrode plate flow channel structure for hydrogen production by electrolyzing water.

[0019] Figure 2 It is a schematic structural diagram of the cathode electrode plate in the electrode plate flow channel structure for hydrogen production by electrolyzing water.

[0020] Figure 3 It is a schematic structural diagram of the cathode electrode plate in the electrode plate flow channel structure for hydrogen production by electrolyzing water from another angle.

[0021] Figure 4 It is a schematic structural diagram of the anode electrode plate in the electrode plate flow channel structure for hydrogen production by electrolyzing water.

[0022] Figure 5 It is a schematic structural diagram of the anode electrode plate in the electrode plate flow channel structure for hydrogen production by electrolyzing water from another angle.

[0023] Figure 6 It is a schematic structural diagram of the electrode plate frame in the electrode plate flow channel structure for hydrogen production by electrolyzing water.

[0024] Figure 7 For Figure 6 The partial enlarged view of the place A in Detailed Description of the Preferred Embodiment

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the detailed description of the embodiments of the present invention provided herein is not intended to limit the scope of the claimed invention, but is merely representative of selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0026] Please refer to Figure 1 , the electrode plate flow channel structure for hydrogen production by electrolyzing water, including an electrode plate body 1;

[0027] The plate body 1 is fixedly installed on the plate frame 4;

[0028] The plate body 1 is divided into a cathode plate 2 and an anode plate 3, where the cathode plate 2 and the anode plate 3 are arranged in a mirror image of each other; both the cathode plate 2 and the anode plate 3 are formed by stamping a sheet;

[0029] As Figures 2-3 , a cathode flow channel 201 is provided on the cathode plate 2. The cathode flow channel 201 includes a cathode reaction zone 202, a cathode current collecting zone 203, and a cathode outlet 204. The cathode outlet 204 is located at the upper left position of the cathode plate 2,

[0030] wherein a plurality of first partitions 205 are vertically arranged in the cathode reaction zone 201. The first partitions 205 divide the cathode reaction zone 201 into a plurality of first diversion channels 206. A plurality of second partitions 207 arranged in a bent shape are provided in the cathode current collecting zone 203. The lower ends of the second partitions 207 are connected to the tops of the first partitions 205. At the same time, the second partitions 207 divide the cathode into a plurality of second diversion channels 208. The second diversion channels 208 are arranged in a bent shape. The lower ends of the second diversion channels 208 are communicated with the first diversion channels 206, and the tops of the second diversion channels 208 converge to the cathode outlet 204;

[0031] At the same time, a first water channel 209 is further provided in the middle of the top of the cathode plate 2, and an anode gas passage port 210 is provided on the upper right side of the cathode plate 2;

[0032] Similarly, as Figures 4-5 , an anode flow channel 301 is provided on the anode plate 3. The anode flow channel 301 includes an anode reaction zone 302, an anode current collecting zone 303, and an anode outlet 304. The anode outlet 304 is located at the upper right position of the anode plate 3,

[0033] wherein a plurality of third partitions 305 are vertically arranged in the anode reaction zone 301. The third partitions 305 divide the anode reaction zone 301 into a plurality of third diversion channels 306. A plurality of fourth partitions 307 arranged in a bent shape are provided in the anode current collecting zone 303. The lower ends of the fourth partitions 307 are connected to the tops of the third partitions 305. At the same time, the fourth partitions 307 divide the anode into a plurality of fourth diversion channels 308. The fourth diversion channels 308 are arranged in a bent shape. The lower ends of the fourth diversion channels 308 are communicated with the third diversion channels 306, and the tops of the fourth diversion channels 308 converge to the anode outlet 304;

[0034] Meanwhile, a second water channel 309 is also provided in the middle of the top of the anode plate 3, and a cathode gas passage port 210 is provided on the left side of the top of the anode plate 3; since the cathode plate 2 and the anode plate 3 are used in pairs by superposition, the cathode gas passage port 210 is mainly used for the passage of the gas generated by the cathode reaction collected in the cathode flow channel 201 of the cathode plate 2. Similarly, the anode gas passage port 210 is also used for the passage of the gas generated by the reaction at the anode plate 3.

[0035] Such as Figures 6-7 , meanwhile, the plate frame 4 is a rectangular frame body, and an installation groove 401 is provided inside the plate frame 4, and an annular slot 402 is provided at the edge of the installation groove 401. At the same time, a plug board 403 is provided by bending the edge of the plate body 1 backward.

[0036] When the present utility model is installed, the plate body 1 is fixedly installed in the plate frame 4, so that one side of the plate body 1 is flush with one side of the plate frame 4, and the plug board 403 is inserted into the slot 402.

[0037] In this solution, the plate frame 4 with a simple structure is used to bear the longitudinal pressure when the plates form an electrolytic cell, while the plate body with a complex structure is formed by stamping a 1-mm-thick plate, which simplifies the processing process and technology and greatly reduces the cost.

[0038] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance. In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, terms such as "set" and "connected" 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 an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. Plate flow channel structure for hydrogen production by electrolyzing water, including a plate body, characterized in that The plate body is fixedly installed on the plate frame; the plate body is divided into a cathode plate and an anode plate, and the cathode plate and the anode plate are mirror - image to each other; both the cathode plate and the anode plate are formed by stamping a plate; a cathode flow channel is arranged on the cathode plate, and the cathode flow channel includes a cathode reaction area, a cathode current - collecting area and a cathode outlet, and the cathode outlet is located at the left - hand top position of the cathode plate. An anode flow channel is arranged on the anode plate, and the anode flow channel includes an anode reaction area, an anode current - collecting area and an anode outlet, and the anode outlet is located at the right - hand top position of the anode plate.

2. The flow channel structure of the electrode plate for hydrogen production by electrolyzing water according to claim 1, wherein A number of first partitions are vertically arranged in the cathode reaction area, and a number of second partitions arranged in a bent shape are arranged in the cathode current - collecting area, and the lower ends of the second partitions are connected to the tops of the first partitions.

3. The flow channel structure of the electrode plate for hydrogen production by electrolyzing water according to claim 2, wherein, The first partitions divide the cathode reaction area into a number of first diversion channels, and at the same time the second partitions divide the cathode into a number of second diversion channels. The second diversion channels are arranged in a bent shape, the lower ends of the second diversion channels are communicated with the first diversion channels, and the tops of the second diversion channels converge to the cathode outlet.

4. The flow channel structure of the electrode plate for hydrogen production by electrolyzing water according to claim 2, wherein, A first water channel is also arranged in the middle of the top of the cathode plate, and an anode gas passage is arranged on the right side of the top of the cathode plate.

5. The flow channel structure of the electrode plate for hydrogen production by electrolyzing water according to claim 1, characterized in that, A number of third partitions are vertically arranged in the anode reaction area, and a number of fourth partitions arranged in a bent shape are arranged in the anode current - collecting area, and the lower ends of the fourth partitions are connected to the tops of the third partitions.

6. The flow channel structure of the electrode plate for hydrogen production by electrolyzing water according to claim 5, wherein The third partitions divide the anode reaction area into a number of third diversion channels, and at the same time the fourth partitions divide the anode into a number of fourth diversion channels. The fourth diversion channels are arranged in a bent shape, the lower ends of the fourth diversion channels are communicated with the third diversion channels, and the tops of the fourth diversion channels converge to the anode outlet.

7. The plate flow channel structure for hydrogen production by electrolyzing water according to claim 5, characterized in that, A second water channel is also arranged in the middle of the top of the anode plate, and a cathode gas passage is arranged on the left side of the top of the anode plate.

8. The flow channel structure of the electrode plate for hydrogen production by electrolyzing water according to any one of claims 1-7, characterized in that, The plate frame is a rectangular frame body, and an installation groove is formed on the inner side of the plate frame, and an annular slot is arranged at the edge of the installation groove. At the same time, the edge of the plate body is bent backward to form an insertion plate.

Images