CN217789379U - Electrolysis device - Google Patents
Electrolysis device Download PDFInfo
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- CN217789379U CN217789379U CN202220997278.0U CN202220997278U CN217789379U CN 217789379 U CN217789379 U CN 217789379U CN 202220997278 U CN202220997278 U CN 202220997278U CN 217789379 U CN217789379 U CN 217789379U
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Abstract
The utility model discloses an electrolysis unit, include: an electrolytic cell; an electrode located within the electrolytic cell; a first power source connected to the electrode, the first power source being capable of being turned on or off, the first power source being capable of providing a first voltage to the electrode when turned on; a second power source connected to the electrode, the second power source capable of providing a second voltage to the electrode when the first power source is de-energized, the second voltage being less than the first voltage. The utility model discloses an electrolytic device cooperatees through adopting first power and second power, can reach the life-span of extension electrolysis trough, improve effects such as electrochemical reaction efficiency and lifting means start-up speed.
Description
Technical Field
The utility model relates to an electrolysis technology field, more specifically relates to an electrolysis unit.
Background
The existing electrolytic cell usually adopts a continuous power supply mode to carry out electrochemical reaction, and when the power supply for supplying power to the electrolytic cell is cut off to cause intermittent work of the electrolytic cell, frequent starting and stopping easily cause the problems that electrodes in the electrolytic cell are easy to oxidize and corrode and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electrolysis unit, can solve among the prior art electrolysis trough intermittent type nature during operation and lead to the easy oxidation of electrode in the electrolysis trough and corrosion scheduling problem.
According to a first aspect of the present invention, there is provided an electrolysis apparatus comprising: an electrolytic cell; an electrode located within the electrolytic cell; a first power source connected to the electrode, the first power source being capable of being turned on or off, the first power source being capable of providing a first voltage to the electrode when turned on; a second power source connected to the electrode, the second power source capable of providing a second voltage to the electrode when the first power source is de-energized, the second voltage being less than the first voltage.
Optionally, the first power source is a wind power generation system or a photovoltaic power generation system.
Optionally, the second power supply is an energy storage device, and the energy storage device is connected in parallel with the electrode.
Optionally, the energy storage device is a battery or a capacitor.
Optionally, the electrolysis apparatus further comprises a controller, and the controller controls the second power supply to be switched on or off by detecting a power supply state of the first power supply to the electrode.
Optionally, the electrolysis apparatus further comprises a voltage regulator, an input terminal of the voltage regulator is connected to the second power supply, an output terminal of the voltage regulator is connected to the electrode, and the voltage regulator can convert the voltage output by the second power supply into a predetermined voltage and then input the predetermined voltage to the electrode.
Optionally, the voltage regulator is a dc-dc converter.
Optionally, the electrolytic cell is an aqueous solution electrolytic cell.
Optionally, the second voltage is lower than 1.23V.
Optionally, the electrolytic cell is an alkaline electrolytic cell.
The utility model has the technical effects that the first power supply and the second power supply are adopted to be matched with each other, the electrodes can be effectively protected, the electrolytic cell is prevented from being frequently started and stopped to influence the electrolytic cell, and therefore the service life of the electrolytic cell is prolonged, and the electrochemical reaction efficiency and the starting speed of the lifting device are improved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic view of an electrolysis apparatus according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of an electrolysis apparatus according to an embodiment of the present invention.
Reference numerals
An electrolysis apparatus 100;
an electrolytic cell 10; a first power supply 20; a second power supply 30; a first switch 40; a controller 50; a dc-dc converter 60.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The electrolytic device 100 according to an embodiment of the present invention will be described in detail with reference to the drawings.
As shown in fig. 1 and 2, an electrolysis apparatus 100 according to an embodiment of the present invention includes an electrolysis cell 10, electrodes, a first power source 20, and a second power source 30.
Specifically, the electrodes are positioned within the electrolytic cell 10, a first power source 20 is connected to the electrodes, the first power source 20 can be turned on or off, the first power source 20 can provide a first voltage to the electrodes when turned on, a second power source 30 is connected to the electrodes, the second power source 30 can provide a second voltage to the electrodes when the first power source 20 is turned off, the second voltage being less than the first voltage.
In other words, the electrolysis apparatus 100 according to the embodiment of the present invention is mainly composed of the electrolysis bath 10, the electrodes, the first power source 20, and the second power source 30, wherein the electrolysis bath 10 may define a receiving space therein, and the electrodes may be received in the receiving space, and include the anode electrode and the cathode electrode. Electrolyte can be contained in the containing space, and when an external power supply provides working voltage for the electrodes, electrochemical reaction can be realized.
The power supply of the present embodiment may be divided into a first power supply 20 and a second power supply 30, wherein the first power supply 20 is connected to the anode electrode and the cathode electrode, respectively, the on and off of the first power supply 20 may be controlled by a first switch 40, and the first power supply 20 and the first switch 40 may constitute a main power supply module. When the first switch 40 controls the first power source 20 to be turned on, the first power source 20 can supply a first voltage to the electrodes, which can realize the electrochemical reaction in the electrolytic cell 10, that is, the first voltage is an operating voltage.
In addition, when the first switch 40 controls the first power source 20 to be in an off state, the second power source 30 can supply the second voltage to the electrodes, and the second voltage does not cause an electrochemical reaction because the second voltage is less than the operating voltage. The second voltage, however, may maintain a voltage across the cell 10, providing a certain amount of stable voltage protection for the electrodes within the cell 10. Moreover, the state of charge of the electrodes can still be maintained by the second power supply 30 after the electrolysis cell 10 is powered off, thus also increasing the starting speed of the electrolysis apparatus 100.
Therefore, according to the utility model discloses according to the electrolytic device 100, cooperate through adopting first power 20 and second power 30, can protect the electrode effectively, avoided electrolysis trough 10 to frequently open and stop the influence to electrolysis trough 10 to reach the life-span of extension electrolysis trough 10, improve effects such as electrochemical reaction efficiency and lifting means start-up speed.
According to an embodiment of the present invention, the first power source 20 is a new energy power generation system such as a wind power generation system or a photovoltaic power generation system. That is to say, in the first power supply 20 of this embodiment, a new energy technology may be selected, and the abundant wind power and photovoltaic power generation power resources are combined with the electrochemical technology, for example, the new energy technology is combined with the water electrolysis hydrogen production technology, so that not only the problem of renewable energy consumption can be solved, but also the electricity consumption cost of water electrolysis hydrogen production can be further reduced. Even if new energy power generation receives natural environment's restriction, has intermittent type nature and volatility, the utility model discloses also can protect the electrode when the outage, avoid making the electrode take place to corrode, prolong electrolysis trough 10's life-span, improve hydrogen manufacturing efficiency.
In the present embodiment, by using renewable energy as the first power supply 20, the problem of consumption of renewable energy can be solved, and the electricity cost of the electrochemical reaction can be further reduced. That is to say, the utility model discloses an adopt the method that first power and second power combine together, can solve the easy oxidation of electrode and the problem of corrosion that leads to renewable energy intermittent type nature.
According to an embodiment of the present invention, the second power source 30 is an energy storage device, which is connected in parallel with the electrodes. At this time, the first power source 20 may be connected to the energy storage device and the electrolytic cell 10 in parallel. When the second power source 30 is an energy storage device, the second power source 30 may be charged by the first power source 20. Specifically, the following method may be employed: when the first power source 20 is turned on, the first power source 20 supplies power to the electrolytic cell 10 and the energy storage device, at this time, the electrolytic cell 10 performs an electrical reaction, the energy storage device is charged, and at this time, the controller 50 can control the disconnection between the electrolytic cell 10 and the energy storage device. When the first power source 20 is disconnected, the controller 50 can control the connection between the energy storage device and the electrolytic cell 10, and then the electric energy can be converted by the dc-dc converter 60 to provide a certain voltage to the electrolytic cell 10.
In addition, in the embodiment, when the first power source 20 adopts clean energy such as a wind power generation system or a photovoltaic power generation system, and when the energy storage device can be charged by the first power source 20, the clean energy can supply power to the electrolytic cell 10 and the energy storage device, and at this time, the first switch 40 can control the on and off of the clean energy. That is, in some embodiments, the first power source 20, the electrolysis cell 10, and the second power source 30 may be powered by new energy when the electrolysis cell 10 is connected to the first power source 20 after being connected in parallel to the second power source 30.
In some embodiments of the present invention, the energy storage device is a battery or a capacitor or other energy storage devices.
According to an embodiment of the present invention, the electrolysis apparatus 100 further comprises a controller 50, and the controller 50 controls the second power source 30 to be turned on or off by detecting the power supply state of the first power source 20 to the electrode. That is, the controller 50 can control the disconnection of the connection between the second power source 30 and the electrolytic cell 10, for example, the connection between the storage battery and the alkaline water electrolytic cell. Alternatively, the battery, the controller 50, and the dc-dc converter 60 may be connected in series.
According to an embodiment of the present invention, the electrolysis apparatus 100 further comprises a voltage regulator, an input terminal of the voltage regulator is connected to the second power supply 30, an output terminal of the voltage regulator is connected to the electrode, and the voltage regulator can convert the voltage output by the second power supply 30 into a predetermined voltage and then input the predetermined voltage to the electrode, which may be lower than the working voltage required for the electrochemistry. Where electrolysis apparatus 100 includes both voltage regulator and controller 50, voltage regulator and controller 50 may constitute a voltage regulation apparatus. Alternatively, the voltage regulating device and the energy storage device may constitute a backup power module.
According to an embodiment of the present invention, the voltage regulator is the above-mentioned dc-dc converter 60, and the dc-dc converter 60 can realize the electric energy conversion, so as to provide a stable and appropriate voltage for the electrolytic cell 10. Alternatively, the battery may be associated with a voltage regulator, for example, the battery is charged when the first switch 40 is turned on, a protection voltage is provided to the electrolytic bath 10 when the first switch 40 is turned off, the controller 50 in the voltage regulator controls the disconnection or connection between the battery and the electrolytic bath 10 by detecting the on/off state of the electrolytic bath 10, and the dc-dc converter 60 may convert the voltage output from the battery to a voltage of an appropriate magnitude and then input the converted voltage to the electrolytic bath 10.
In some embodiments of the present invention, the electrolytic cell 10 is an aqueous solution electrolytic cell 10, that is, the electrolytic apparatus 100 of the present embodiment is an apparatus for producing hydrogen by electrolyzing water. Compared with the existing water electrolysis hydrogen production system, the electrolysis device 100 of the embodiment can effectively protect the electrode and the catalyst, and avoids the influence of frequent start and stop of the electrolysis bath 10 on the electrolysis bath 10, thereby achieving the effects of prolonging the service life of the electrolysis bath 10, stabilizing the hydrogen production efficiency and improving the starting speed of the equipment. The hydrogen production by electrolyzing water has the advantages of green and pollution-free, high hydrogen purity, low impurity content, adaptability to various occasions, and the like. When the clean energy is combined with the first power supply, the hydrogen can be produced by utilizing the renewable energy through electrolysis.
According to an embodiment of the present invention, the second voltage is lower than 1.23V, the first voltage provided by the first power source 20 is not less than 1.23V, and the second voltage provided by the second power source 30 is lower than about 1.23V, so that the voltage at the two ends of the electrolytic cell 10 can be maintained when the second power source 30 works, but no current is present in the circuit, so that the charge state of the electrodes is maintained. It should be noted that 1.23V is the theoretical potential for decomposition of water into hydrogen and oxygen, and when the voltage is lower than 1.23V, no water electrolysis reaction occurs, so no current is present in the circuit. The voltage of about 1.23V can keep the charge state of the electrode basically consistent with that of the electrolyzed water. In addition, the second power supply 30 of the present embodiment provides only a small voltage across the electrolytic cell 10 without passing a current, and has a low power consumption without a large influence on the cost.
In some embodiments of the present invention, the electrolytic cell 10 is an alkaline electrolytic cell. Moreover, the electrolysis device 100 of the embodiment has low power consumption and no influence on hydrogen production cost, and can be widely applied to alkaline water electrolysis hydrogen production equipment. The alkaline water electrolysis hydrogen production technology is mature and has lower cost, so the method is the most widely applied method in the water electrolysis hydrogen production at present.
The operation of the electrolysis apparatus 100 according to an embodiment of the present invention will be described in detail with reference to the following embodiments.
When the first switch 40 is turned on, the alkaline water electrolyzer operates to produce hydrogen, the battery enters a charging mode, and the controller 50 disconnects the battery from the alkaline water electrolyzer. When the first switch 40 is turned off, the operation of the alkaline water electrolyzer is stopped, the controller 50 turns on the connection between the storage battery and the alkaline water electrolyzer, and the storage battery provides a stable voltage protection to the alkaline water electrolyzer of a magnitude less than the voltage at which the electrolytic water reaction occurs via the DC-DC converter 60.
In summary, the electrolysis apparatus 100 according to the embodiment of the present invention can add the second power source 30 to the existing electrolysis apparatus 100, which has the advantage of easy modification. The utility model discloses electrolytic device 100 can protect the electrode effectively when electrolysis trough 10 stop work, prevents that electrode and catalyst from corroding, has guaranteed the life-span and the electrochemical efficiency of electrolysis trough 10, has promoted hydrogen production efficiency for example. In addition, the electrolytic cell 10 of the embodiment of the present invention can still maintain the state of charge of the electrode through the second power supply 30 after power failure, which is beneficial to increasing the starting speed of the electrolytic cell 10.
Although certain specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. An electrolysis apparatus, comprising:
an electrolytic cell;
an electrode located within the electrolytic cell;
a first power source connected to the electrode, the first power source being capable of being turned on or off, the first power source being capable of providing a first voltage to the electrode when turned on;
a second power source connected to the electrode, the second power source capable of providing a second voltage to the electrode when the first power source is de-energized, the second voltage being less than the first voltage.
2. The electrolyzer of claim 1 characterized in that the first power source is a wind power generation system or a photovoltaic power generation system.
3. The electrolysis device of claim 1, wherein the second power source is an energy storage device connected in parallel with the electrodes.
4. The electrolysis device according to claim 3, wherein the energy storage device is a battery or a capacitor.
5. The electrolysis device according to claim 1, further comprising a controller that controls the second power source to be turned on or off by detecting a state of the first power source supplying power to the electrode.
6. The electrolysis device according to claim 1, further comprising a voltage regulator, wherein an input terminal of the voltage regulator is connected to the second power supply, an output terminal of the voltage regulator is connected to the electrode, and the voltage regulator is capable of converting a voltage output from the second power supply into a predetermined voltage and inputting the predetermined voltage to the electrode.
7. The electrolysis device of claim 6, wherein the voltage regulator is a DC-DC converter.
8. The electrolysis device according to claim 1, wherein the electrolysis cell is an aqueous solution electrolysis cell.
9. The electrolysis device according to claim 8, wherein the second voltage is below 1.23V.
10. The electrolysis device according to claim 8, wherein the electrolysis cell is an alkaline electrolysis cell.
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CN202220997278.0U CN217789379U (en) | 2022-04-26 | 2022-04-26 | Electrolysis device |
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CN202220997278.0U CN217789379U (en) | 2022-04-26 | 2022-04-26 | Electrolysis device |
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