CN219534566U - Electrochemical hydrogen supercharging device and water electrolysis device - Google Patents
Electrochemical hydrogen supercharging device and water electrolysis device Download PDFInfo
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- CN219534566U CN219534566U CN202320436480.0U CN202320436480U CN219534566U CN 219534566 U CN219534566 U CN 219534566U CN 202320436480 U CN202320436480 U CN 202320436480U CN 219534566 U CN219534566 U CN 219534566U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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Abstract
The utility model provides an electrochemical hydrogen pressurizing device and a water electrolysis device, which can make the current density in the device uniform. The electrochemical hydrogen pressurizing device includes: an electrochemical cell stack comprising a plurality of electrochemical cells stacked one above the other, each electrochemical cell being circular and comprising an anode power supply, a cathode power supply, an electrolyte membrane positioned between the anode power supply and the cathode power supply, an anode-side separator disposed on the anode power supply, and a cathode-side separator disposed on the cathode power supply, the electrochemical hydrogen pressurizing means being energized between the anode power supply and the cathode power supply to electrochemically pressurize hydrogen gas supplied to the anode power supply; and two wiring boards respectively arranged at two ends of the electrochemical cell group in the stacking direction, wherein each wiring board is provided with a connecting terminal, and the connecting terminal of one of the two wiring boards and the connecting terminal of the other of the two wiring boards are respectively positioned at two opposite sides of the electrochemical cell group in the radial direction of the electrochemical cell group.
Description
Technical Field
The present utility model relates to an electrochemical device, and more particularly, to an electrochemical hydrogen pressurizing device and a water electrolysis device.
Background
In recent years, research and development on differential pressure type electrochemical boosting cells contributing to energy efficiency have been underway in order to ensure affordable, reliable, sustainable and advanced energy access to more people. However, in the technology related to the differential pressure type electrochemical boosting battery, the current of the electrochemical cell stack is concentrated on the side where the connection terminal is located, resulting in uneven current density, and uneven electrochemical reaction, resulting in uneven temperature distribution of the electrochemical cell. Accordingly, there is a need for improvements in electrochemical boost cells to overcome the problems described.
Disclosure of Invention
The utility model provides an electrochemical hydrogen pressurizing device and a water electrolysis device, which can make the current density in the device uniform.
The utility model provides an electrochemical hydrogen pressurizing device, comprising: an electrochemical cell stack comprising a plurality of electrochemical cells stacked one on another in a stacking direction, each of the plurality of electrochemical cells being circular and comprising an anode power supply, a cathode power supply, an electrolyte membrane between the anode power supply and the cathode power supply, an anode-side separator disposed on the anode power supply, and a cathode-side separator disposed on the cathode power supply, the electrochemical hydrogen pressurizing means being energized between the anode power supply and the cathode power supply to electrochemically pressurize hydrogen gas supplied to the anode power supply to generate hydrogen gas at a pressure higher than that of the hydrogen gas at the cathode power supply; and two wiring boards respectively arranged at two ends of the electrochemical cell group in the stacking direction for energizing the electrochemical cell group, each of the two wiring boards having a connection terminal, the connection terminal of one of the two wiring boards and the connection terminal of the other of the two wiring boards being respectively located at opposite sides of the electrochemical cell group in the radial direction of the electrochemical cell group.
In an embodiment of the present utility model, the electrochemical hydrogen pressurizing apparatus includes a supply port for supplying hydrogen gas to the electrochemical cell stack, and a discharge port for discharging the hydrogen gas not used for electrolysis from the electrochemical cell stack, the connection terminal of one of the two connection plates corresponding to the supply port, and the connection terminal of the other of the two connection plates corresponding to the discharge port.
In an embodiment of the present utility model, the electrochemical hydrogen pressurizing apparatus includes a supply port for supplying hydrogen gas to the electrochemical cell stack, a discharge port for discharging the hydrogen gas not used for electrolysis from the electrochemical cell stack, and a cooling flow path for cooling the electrochemical cell stack and flowing from the discharge port to the supply port.
The present utility model provides a water electrolysis apparatus comprising: a water electrolysis cell stack including a plurality of water electrolysis cells stacked on each other in a stacking direction, each of the plurality of water electrolysis cells being circular and including an anode power supply, a cathode power supply, an electrolyte membrane between the anode power supply and the cathode power supply, an anode-side separator disposed on the anode power supply, and a cathode-side separator disposed on the cathode power supply, the water electrolysis device being energized between the anode power supply and the cathode power supply to electrolyze water supplied to the anode power supply to generate a gas having a pressure higher than that of the water at the cathode power supply; and two wiring boards respectively arranged at both ends of the water electrolysis cell group in the stacking direction for energizing the water electrolysis cell group, each of the two wiring boards having a connection terminal, the connection terminal of one of the two wiring boards and the connection terminal of the other of the two wiring boards being respectively located at opposite sides of the water electrolysis cell group in the radial direction of the water electrolysis cell group.
In an embodiment of the present utility model, the water electrolysis apparatus includes a supply port for supplying water to the water electrolysis cell group and a discharge port for discharging the water not used for electrolysis from the water electrolysis cell group, the connection terminal of one of the two wiring boards corresponds to the supply port, and the connection terminal of the other of the two wiring boards corresponds to the discharge port.
In an embodiment of the present utility model, the water electrolysis apparatus includes a supply port for supplying water to the water electrolysis cell group and a discharge port for discharging the water not used for electrolysis from the water electrolysis cell group, the discharge port being provided adjacent to the supply port, the water flowing from the supply port around the center of the water electrolysis cell group to the discharge port.
Based on the above, in the electrochemical hydrogen pressurizing apparatus/water electrolysis apparatus of the present utility model, the two connection terminals are located on the opposite sides of the electrochemical cell stack/water electrolysis cell stack, respectively, in the radial direction of the electrochemical cell stack/water electrolysis cell stack, instead of being located on the same side of the electrochemical cell stack/water electrolysis cell stack, so that the current is prevented from being concentrated on a single side of the electrochemical cell stack/water electrolysis cell stack. Thus, the electrochemical hydrogen pressurizing apparatus/water electrolysis apparatus of the present utility model can make the current density therein uniform.
In order to make the above features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a schematic cross-sectional view of an electrochemical hydrogen pressurizing apparatus according to an embodiment of the utility model;
FIG. 2 is an enlarged view of a portion of the electrochemical cell stack of FIG. 1;
FIGS. 3 and 4 are schematic top views of the two patch panels of FIG. 1, respectively;
FIGS. 5 and 6 are partial schematic plan views of the electrochemical hydrogen pressurizing apparatus of FIG. 1, respectively, at different heights in the stacking direction;
fig. 7 is a schematic top view of a partial structure of an electrochemical hydrogen pressurizing apparatus according to another embodiment of the utility model.
Reference numerals illustrate:
100: an electrochemical hydrogen pressurizing device;
110: an electrochemical cell stack;
112: an electrochemical cell;
1121: an anode power supply;
1122: a cathode power supply;
1123: an electrolyte membrane;
1124: an anode side separator;
1125: a cathode-side separator;
120A, 120B: a wiring board;
130A: a supply port;
130B: a discharge port;
140: a cooling flow path;
142: a flow path section;
c: a current;
d1: stacking direction;
d2: radial direction;
e1, E2: a connection terminal;
f: a cooling fluid;
m: an electrolytic medium;
p: a flow path;
x, Y, Z: axial direction.
Detailed Description
Fig. 1 is a schematic cross-sectional view of an electrochemical hydrogen pressurizing apparatus according to an embodiment of the utility model, showing an axial direction X, Y, Z. Fig. 2 is an enlarged view of a portion of the electrochemical cell stack of fig. 1. Fig. 3 and 4 are schematic top views of the two patch panels of fig. 1, respectively. Referring to fig. 1 to 4, an electrochemical hydrogen pressurizing apparatus (also referred to as a water electrolysis apparatus) 100 of the present embodiment includes an electrochemical cell stack 110 and two terminal plates 120A and 120B. The electrochemical cell stack 110 includes a plurality of electrochemical cells 112 (which may also be regarded as water electrolysis cells) stacked on each other along a stacking direction D1 parallel to the axial direction Z, each electrochemical cell 112 being circular (generally corresponding to the shape of the wiring board shown in fig. 2 and 3) as viewed along the stacking direction D1 and including an anode power supply 1121, a cathode power supply 1122, an electrolyte membrane 1123 located between the anode power supply 1121 and the cathode power supply 1122, an anode-side separator 1124 disposed on the anode power supply 1121, and a cathode-side separator 1125 disposed on the cathode power supply 1122.
The electrochemical hydrogen pressurizing apparatus 100 applies electricity between the anode power supply 1121 and the cathode power supply 1122 to electrochemically pressurize the hydrogen gas supplied to the anode power supply 1121, that is, electrolyzes the water supplied to the anode power supply 1121. Thus, hydrogen gas having a pressure higher than that of the hydrogen gas (i.e., the hydrogen gas supplied to the anode power supply 1121) is generated at the cathode power supply 1122, i.e., gas having a pressure higher than that of the water (i.e., the water supplied to the anode power supply 1121) is generated at the cathode power supply 1122. The detailed electrochemical principles of differential electrochemical boost cells are known in the art and are not described in detail herein.
Two terminal plates 120A, 120B are respectively disposed at both ends of the electrochemical cell stack 110 in the stacking direction D1 for energizing the electrochemical cell stack 110. The connection plate 120A has a connection terminal E1, the connection plate 120B has a connection terminal E2, and the connection terminal E1 of the connection plate 120A and the connection terminal E2 of the connection plate 120B are located on opposite sides of the electrochemical cell stack 110 in the radial direction D2 of the electrochemical cell stack 110, respectively, that is, the phase difference between the connection terminal E1 and the connection terminal E2 is 180 degrees.
As described above, in the electrochemical hydrogen pressurizing apparatus 100 of the present embodiment, the two connection terminals E1 and E2 are respectively located at two opposite sides of the electrochemical cell stack 110 in the radial direction D2 of the electrochemical cell stack 110, rather than being located at the same side of the electrochemical cell stack 110, so that the current is prevented from being concentrated on a single side of the electrochemical cell stack 110. In fig. 1, it is schematically shown that the current C flows from the connection terminal E1 on the right side to the connection terminal E2 on the left side, instead of being concentrated on the right side or on the left side. Thus, the electrochemical hydrogen pressurizing apparatus 100 of the present embodiment can make the current density in the electrochemical hydrogen pressurizing apparatus uniform, and further make the electrochemical reactions uniform, so as to make the temperature distribution of the electrochemical cells 112 uniform.
Referring to fig. 1, in the present embodiment, the electrochemical hydrogen pressurizing apparatus 100 includes a plurality of supply ports 130A and a plurality of discharge ports 130B, the plurality of supply ports 130A respectively correspond to the plurality of electrochemical cells 112 and are used for supplying an electrolyte medium M (e.g. hydrogen/water, schematically shown in fig. 3 and 4) to the electrochemical cell stack 110, and the plurality of discharge ports 130B respectively correspond to the plurality of electrochemical cells 112 and are used for discharging the electrolyte medium M (e.g. hydrogen/water, schematically shown in fig. 3 and 4) that is not used for electrolysis from the electrochemical cell stack 110. The connection terminal E2 of the wiring board 120B corresponds to the supply port 130A, and the connection terminal E1 of the wiring board 120A corresponds to the discharge port 130B.
Fig. 5 and 6 are schematic top views of partial structures of the electrochemical hydrogen pressurizing apparatus of fig. 1 at different heights in the stacking direction, respectively. Referring to fig. 5 and 6, the electrochemical hydrogen pressurizing apparatus 100 (shown in fig. 1) of the embodiment further includes a cooling flow path 140, and the cooling flow path 140 is configured to cool the electrochemical cell stack 110 with the cooling fluid F. The cooling flow path 140 of the present embodiment includes a flow path section 142 extending in the axial direction Y, which is turned at the center of the electrochemical cell 112 as shown in fig. 6, and the flow path section 142 flows from the position of the discharge port 130B shown in fig. 5 to the position of the supply port 130A shown in fig. 5. Accordingly, the cooling efficiency at the discharge port 130B having a high temperature can be improved, and the temperature distribution of the electrochemical hydrogen pressurizing apparatus 100 can be made uniform.
Fig. 7 is a schematic top view of a partial structure of an electrochemical hydrogen pressurizing apparatus according to another embodiment of the utility model. The embodiment shown in fig. 7 is different from the embodiment shown in fig. 5 in that the discharge port 130B of the embodiment shown in fig. 7 is disposed adjacent to the supply port 130A, and the electrolytic medium M (e.g., hydrogen/water) flows from the supply port 130A along the flow path P around the center of the water electrolysis cell stack 110 to the discharge port 130B.
In summary, in the electrochemical hydrogen boosting device/water electrolysis device according to the present utility model, the two connection terminals are located on the opposite sides of the electrochemical cell stack/water electrolysis cell stack in the radial direction of the electrochemical cell stack/water electrolysis cell stack, respectively, rather than on the same side of the electrochemical cell stack/water electrolysis cell stack, so that the current is prevented from being concentrated on a single side of the electrochemical cell stack/water electrolysis cell stack. Thus, the electrochemical hydrogen pressurizing apparatus/water electrolysis apparatus of the present utility model can make the current density therein uniform.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (6)
1. An electrochemical hydrogen pressurizing apparatus, comprising:
an electrochemical cell stack comprising a plurality of electrochemical cells stacked one on another in a stacking direction, each of the plurality of electrochemical cells being circular and comprising an anode power supply, a cathode power supply, an electrolyte membrane between the anode power supply and the cathode power supply, an anode-side separator disposed on the anode power supply, and a cathode-side separator disposed on the cathode power supply, the electrochemical hydrogen pressurizing means being energized between the anode power supply and the cathode power supply to electrochemically pressurize hydrogen gas supplied to the anode power supply to generate hydrogen gas at a pressure higher than that of the hydrogen gas at the cathode power supply; and
two terminal plates respectively disposed at both ends of the electrochemical cell stack in the stacking direction for energizing the electrochemical cell stack,
each of the two wiring boards has a connection terminal, and the connection terminal of one of the two wiring boards and the connection terminal of the other of the two wiring boards are located on opposite sides of the electrochemical cell stack in the radial direction of the electrochemical cell stack, respectively.
2. The electrochemical hydrogen pressurizing apparatus according to claim 1, wherein,
comprising a supply port for supplying hydrogen to the electrochemical cell stack and a discharge port for discharging the hydrogen not used for electrolysis from the electrochemical cell stack,
the connection terminal of one of the two wiring boards corresponds to the supply port, and the connection terminal of the other of the two wiring boards corresponds to the discharge port.
3. The electrochemical hydrogen pressurizing apparatus according to claim 1, wherein,
the electrochemical cell stack comprises a supply port for supplying hydrogen to the electrochemical cell stack, a discharge port for discharging the hydrogen not used for electrolysis from the electrochemical cell stack, and a cooling flow path for cooling the electrochemical cell stack and flowing from the discharge port to the supply port.
4. A water electrolysis apparatus comprising:
a water electrolysis cell stack including a plurality of water electrolysis cells stacked on each other in a stacking direction, each of the plurality of water electrolysis cells being circular and including an anode power supply, a cathode power supply, an electrolyte membrane between the anode power supply and the cathode power supply, an anode-side separator disposed on the anode power supply, and a cathode-side separator disposed on the cathode power supply, the water electrolysis device being energized between the anode power supply and the cathode power supply to electrolyze water supplied to the anode power supply to generate a gas having a pressure higher than that of the water at the cathode power supply; and
two wiring boards disposed at both ends of the water electrolysis cell group in the stacking direction for energizing the water electrolysis cell group,
each of the two connection plates has a connection terminal, and the connection terminal of one of the two connection plates and the connection terminal of the other of the two connection plates are located on opposite sides of the water electrolysis cell group in the radial direction of the water electrolysis cell group, respectively.
5. The water electrolysis apparatus according to claim 4, wherein,
comprises a supply port for supplying water to the water electrolysis cell group and a discharge port for discharging the water not used for electrolysis from the water electrolysis cell group,
the connection terminal of one of the two wiring boards corresponds to the supply port, and the connection terminal of the other of the two wiring boards corresponds to the discharge port.
6. The water electrolysis apparatus according to claim 4, wherein,
comprises a supply port for supplying water to the water electrolysis cell stack and a discharge port for discharging the water not used for electrolysis from the water electrolysis cell stack, the discharge port being provided adjacent to the supply port,
the water flows from the supply port around the center of the water electrolysis cell stack to the discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320436480.0U CN219534566U (en) | 2023-03-09 | 2023-03-09 | Electrochemical hydrogen supercharging device and water electrolysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320436480.0U CN219534566U (en) | 2023-03-09 | 2023-03-09 | Electrochemical hydrogen supercharging device and water electrolysis device |
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| Publication Number | Publication Date |
|---|---|
| CN219534566U true CN219534566U (en) | 2023-08-15 |
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| CN202320436480.0U Active CN219534566U (en) | 2023-03-09 | 2023-03-09 | Electrochemical hydrogen supercharging device and water electrolysis device |
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- 2023-03-09 CN CN202320436480.0U patent/CN219534566U/en active Active
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