CN115852412A - Integrated alkaline electrolytic tank bipolar plate - Google Patents
Integrated alkaline electrolytic tank bipolar plate Download PDFInfo
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- CN115852412A CN115852412A CN202211636917.1A CN202211636917A CN115852412A CN 115852412 A CN115852412 A CN 115852412A CN 202211636917 A CN202211636917 A CN 202211636917A CN 115852412 A CN115852412 A CN 115852412A
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Abstract
The invention discloses an integrated alkaline electrolytic bath bipolar plate, which relates to the technical field of hydrogen production equipment by water electrolysis and comprises a bipolar plate body, wherein a middle polar plate is arranged at the central position of the bipolar plate body, a plurality of polar plate convex columns are arranged on the middle polar plate, an alkaline liquid flow field is distributed among the polar plate convex columns, a polar plate frame is arranged on the outer periphery of the middle polar plate, and an alkaline liquid inlet, a hydrogen outlet and an oxygen outlet are arranged on the polar plate frame. The integrated alkaline electrolytic cell bipolar plate with the structure does not need to perform the processes of rounding and shaping of the plate frame and welding of the middle plate, and reduces the machining difficulty and the production cost; the raw material flat plate is directly subjected to walking, turning and milling processing, and the period is short; after the middle pole plate is integrally stamped, the contact surface of the middle pole plate and the electrode part is larger and firmer; the alkaline liquid flow field area on the middle polar plate is wider, the alkaline liquid flows through the polar plate convex columns which are linearly arranged on the middle polar plate, the flow channel is smoother, the contact resistance is reduced, and the current density is improved.
Description
Technical Field
The invention relates to the technical field of water electrolysis hydrogen production equipment, in particular to an integrated alkaline electrolytic cell bipolar plate.
Background
The polar plate of the alkaline electrolytic cell is an electronic carrier of the anode and the cathode of the small electrolytic cell, and is also a part in contact with the surface of alkali, the electrode and the catalyst, and the advantages and disadvantages of the structural design of the polar plate and the installation condition directly influence the current density and the energy consumption of the electrolytic cell. The novel polar plate on the existing market is mainly a flat-plate-shaped combined supporting net structure, but has the following problems: (1) The supporting net is a tensile net structure and is in contact with the polar plate at a plurality of points in essence, and the electronic conductivity between the supporting net and the polar plate is not high, so that the cell voltage is larger; (2) A piece of supporting net needs to be filled in the cathode and the anode of each small electrolytic cell, and meanwhile, the supporting net needs to be subjected to nickel plating treatment, so that the manufacturing cost of the electrolytic cell is increased; (3) The two sides of the polar plate need to be additionally provided with grooves for placing supporting nets, and in order to facilitate installation, the supporting nets generally need to be welded on the flat polar plate, so that the processing and installation difficulty is increased; (4) The flat plate type polar plate needs to be machined and manufactured through rolling, flattening, middle thin plate welding and the like, and is high in machining difficulty and long in period.
Disclosure of Invention
The invention aims to provide an integrated alkaline electrolytic cell bipolar plate, which directly carries out machining on a raw material plate without carrying out the processes of circle and shaping of a polar frame and welding of a middle polar plate, and solves the problems of high machining and installation difficulty and high production cost; the raw material flat plate is directly subjected to simple walking and turning-milling processing, the production processing period is shorter, and the problem of long production period is solved; the middle pole plate is integrally stamped, so that the contact surface of the bipolar plate and the electrode component is larger and firmer, and the problems of small contact area and low conductivity are solved.
In order to achieve the purpose, the invention provides an integrated alkaline electrolytic cell bipolar plate which comprises a bipolar plate body, wherein a middle polar plate is arranged at the center of the bipolar plate body, a plurality of polar plate convex columns are arranged on the middle polar plate, an alkaline liquid flow field is distributed among the polar plate convex columns, a polar plate frame is arranged on the outer periphery of the middle polar plate, and an alkaline liquid inlet, a hydrogen outlet and an oxygen outlet are arranged on the polar plate frame.
Preferably, the bipolar plate body is of an integrated structure.
Preferably, the middle polar plate is arranged in a circular structure.
Preferably, the pole plate convex columns are linearly arranged and uniformly distributed on the middle pole plate.
Preferably, the top end of the polar plate convex column is provided with a polar plate convex point, and the polar plate convex point and the polar plate convex column are of an integrated structure.
Preferably, the alkali liquor flow fields are linearly and alternately distributed on the middle polar plate.
Preferably, the alkali liquor inlet is arranged on the lower side of the plate frame, a plurality of alkali liquor dispersing channels are arranged on the alkali liquor inlet, and the alkali liquor dispersing channels are connected with the middle plate.
Preferably, the hydrogen outlet is arranged at the upper side of the left part of the polar plate frame, the hydrogen outlet is connected with a hydrogen collecting port, and the hydrogen collecting port is connected with the middle polar plate.
Preferably, the oxygen outlet is arranged at the upper part of the right side of the polar plate frame.
Therefore, the integrated alkaline electrolytic cell bipolar plate adopting the structure does not need to perform the processes of circle-rounding and shaping of the polar frame and welding of the middle polar plate, greatly reduces the machining difficulty and reduces the production cost; the raw material flat plate is directly subjected to simple walking and turning-milling processing, so that the production processing period is short; after the middle polar plate is integrally stamped, the contact surface of the bipolar plate and the electrode part is larger and firmer; the alkaline liquid flow field area on the middle polar plate is wider, and the alkaline liquid flows through the polar plate convex columns which are linearly arranged, so that the flow channel is more smooth, the contact resistance is reduced, and the current density is improved.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural view of an embodiment of an integrated alkaline cell bipolar plate of the present invention;
FIG. 2 is a schematic diagram of an integrated alkaline cell bipolar plate of the present invention before punching of the plate posts;
FIG. 3 is a schematic view of an embodiment of an integrated alkaline cell bipolar plate after punching of the plate posts;
description of the drawings: 1. a middle polar plate; 2. pole plate convex columns; 3. an alkali liquor flow field; 4. a polar plate frame; 5. an alkali liquor inlet; 6. a hydrogen outlet; 7. an oxygen outlet; 8. salient points of the polar plate; 9. an alkali liquor dispersion channel; 10. and a hydrogen collecting port.
Detailed Description
The technical solution of the present invention is further illustrated by the accompanying drawings and examples.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Examples
Referring to fig. 1-3, an integrated alkaline electrolytic cell bipolar plate comprises a bipolar plate body, wherein the bipolar plate body is of an integrated structure, the integrated structure is firmer and more durable, a middle polar plate 1 is arranged at the center of the bipolar plate body, the middle polar plate 1 is of a circular structure, the middle polar plate 1 is directly subjected to off-position turning and milling processing, the production and processing period is shortened, a plurality of polar plate convex columns 2 which are linearly arranged are arranged on the middle polar plate 1, alkaline liquid flow fields 3 are distributed among the polar plate convex columns 2, the alkaline liquid flow fields 3 are linearly and alternately distributed on the middle polar plate 1, the area of the alkaline liquid flow fields 3 is wider, the alkaline liquid flows through the polar plate convex columns 2 which are linearly arranged, the uniformity and the smoothness are improved, the contact resistance is reduced, the current density is improved, a polar plate frame 4 is arranged around the outer periphery of the middle polar plate 1, an alkaline liquid inlet 5, a hydrogen outlet 6 and an oxygen outlet 7 are arranged on the polar plate frame 4, the polar plate frame 4 does not need to be subjected to circle rounding, shaping and welding processing and the middle polar plate 1, and the processing difficulty and the production cost are reduced.
The alkali liquor inlet 5 is arranged at the lower side of the pole plate frame 4, the alkali liquor inlet 5 is provided with a plurality of alkali liquor dispersing channels 9, the alkali liquor dispersing channels 9 are connected with the middle pole plate 1, and the alkali liquor can flow into the middle pole plate 1 more quickly to be electrolyzed due to the arrangement of the alkali liquor dispersing channels 9.
The hydrogen outlet 6 is arranged at the upper side of the left part of the polar plate frame 4, the hydrogen outlet 6 is connected with the hydrogen collecting port 10, the hydrogen collecting port 10 is connected with the middle polar plate 1, the oxygen outlet 7 is arranged at the upper part of the right side of the polar plate frame 4, and the hydrogen outlet 6 and the oxygen outlet 7 are separately arranged to be beneficial to faster obtaining of the prepared hydrogen and oxygen.
Alkali liquor flows into an electrolytic zone on the middle polar plate 1 through the alkali liquor inlet 5 and the alkali liquor dispersing channel 9, the alkali liquor flows through the polar plate convex columns 2 which are linearly arranged on the middle polar plate 1, the flow field is smoother and more regular, hydrogen produced after electrolysis is collected to the hydrogen collecting port 10 and is discharged from the hydrogen outlet 6, and the produced oxygen is discharged through the oxygen outlet 7 arranged on the polar plate frame 4.
Therefore, the integrated alkaline electrolytic cell bipolar plate adopting the structure does not need to perform the processes of circle-rounding and shaping of the polar frame and welding of the middle polar plate, greatly reduces the machining difficulty and reduces the production cost; the raw material flat plate is directly subjected to simple walking and turning milling, so that the production and processing period is short; the pole plate convex columns exposed on the middle pole plate are integrally stamped, so that the contact surface of the bipolar plate and the electrode part is larger and firmer; the alkaline liquid flow field area on the middle polar plate is wider, the alkaline liquid flows through the convex columns which are linearly arranged on the middle polar plate, the uniformity is regular, the flow channel is smoother, the contact resistance is reduced, and the current density is improved.
Finally, it should be noted that: the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (9)
1. An integrated alkaline electrolyzer bipolar plate is characterized in that: the bipolar plate comprises a bipolar plate body, wherein a middle polar plate is arranged at the center of the bipolar plate body, a plurality of polar plate convex columns are arranged on the middle polar plate, an alkali liquor flow field is distributed among the polar plate convex columns, a polar plate frame is arranged around the outer periphery of the middle polar plate, and an alkali liquor inlet, a hydrogen outlet and an oxygen outlet are formed in the polar plate frame.
2. An integrated alkaline cell bipolar plate as set forth in claim 1, wherein: the bipolar plate body is of an integrated structure.
3. An integrated alkaline cell bipolar plate as set forth in claim 1, wherein: the middle polar plate is set to be a circular structure.
4. An integrated alkaline cell bipolar plate as set forth in claim 1, wherein: the pole plate convex columns are linearly arranged and evenly distributed on the middle pole plate.
5. An integrated alkaline cell bipolar plate as set forth in claim 1 wherein: the top end of the polar plate convex column is provided with a polar plate convex point, and the polar plate convex point and the polar plate convex column are of an integrated structure.
6. An integrated alkaline cell bipolar plate as set forth in claim 1, wherein: the alkali liquor flow fields are linearly and alternately distributed on the middle polar plate.
7. An integrated alkaline cell bipolar plate as set forth in claim 1, wherein: the alkali liquor inlet is arranged on the lower side of the polar plate frame, a plurality of alkali liquor dispersing channels are arranged on the alkali liquor inlet, and the alkali liquor dispersing channels are connected with the middle polar plate.
8. An integrated alkaline cell bipolar plate as set forth in claim 1 wherein: the hydrogen outlet is arranged at the upper side of the left part of the polar plate frame, the hydrogen outlet is connected with a hydrogen collecting port, and the hydrogen collecting port is connected with the middle polar plate.
9. An integrated alkaline cell bipolar plate as set forth in claim 1 wherein: the oxygen outlet is arranged at the upper part of the right side of the polar plate frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211636917.1A CN115852412A (en) | 2022-12-16 | 2022-12-16 | Integrated alkaline electrolytic tank bipolar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211636917.1A CN115852412A (en) | 2022-12-16 | 2022-12-16 | Integrated alkaline electrolytic tank bipolar plate |
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| Publication Number | Publication Date |
|---|---|
| CN115852412A true CN115852412A (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211636917.1A Pending CN115852412A (en) | 2022-12-16 | 2022-12-16 | Integrated alkaline electrolytic tank bipolar plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117468024A (en) * | 2023-10-31 | 2024-01-30 | 温州高企氢能科技有限公司 | Array flow field structure for producing hydrogen by alkaline water electrolysis and electrolytic tank |
| CN117626311A (en) * | 2023-11-28 | 2024-03-01 | 广东卡沃罗氢科技有限公司 | Bipolar plate, electrolysis cell and electrolysis tank |
-
2022
- 2022-12-16 CN CN202211636917.1A patent/CN115852412A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117468024A (en) * | 2023-10-31 | 2024-01-30 | 温州高企氢能科技有限公司 | Array flow field structure for producing hydrogen by alkaline water electrolysis and electrolytic tank |
| CN117626311A (en) * | 2023-11-28 | 2024-03-01 | 广东卡沃罗氢科技有限公司 | Bipolar plate, electrolysis cell and electrolysis tank |
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