Electrode for electrolytic bath and electrolytic bath

Abstract

The utility model relates to the technical field of electrolytic baths or assemblies of the electrolytic baths, in particular to an electrode for an electrolytic bath and the electrolytic bath, the electrode for the electrolytic bath comprises an electric heating device used for generating heat after being electrified, an insulating heat conduction layer is arranged on the outer side of the electric heating device, and a conducting layer is arranged outside the insulating heat conduction layer. And the conductive layer is provided with a wiring terminal used for connecting an external power supply to carry out electrolytic reaction. The electrode is heated through the electric heating device at the inner end of the electrode for the electrolytic bath, heat of the electrode is transferred to electrolyte, then the electrolyte can be heated, meanwhile, the insulating heat conduction layer conducts out heat generated by the electric heating device, and meanwhile interference of external current in the electric heating device on electrolytic reaction on the conductive layer is avoided; and additional heating systems and pipelines are not needed, so that the overall structure is simplified, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cells or their assembly parts, in particular to an electrode for an electrolytic cell and an electrolytic cell. Background Art

[0002] In recent years, with the improvement of people's living standards, people's demand for energy has become increasingly urgent. Traditional fossil energy can no longer meet people's demand for energy. However, environmental issues must be considered while obtaining new energy, so people need greener and more environmentally friendly new energy. Therefore, in recent years, a series of green, environmentally friendly and sustainable new energy such as hydrogen energy, solar energy, and wind energy have developed rapidly. However, the unevenness and instability of solar and wind power generation have hindered their further large-scale application and popularization. In the prior art, the electricity generated by solar energy and wind energy is used to electrolyze water to produce hydrogen, and then the energy is converted and stored, which effectively solves many problems in the process of new energy utilization.

[0003] When hydrogen is produced by electrolysis of water, the electrical conductivity of the electrolyte increases with increasing temperature and decreases with decreasing temperature within a certain range. Therefore, the temperature of the electrolyte needs to be controlled within a certain range for electrolytic hydrogen production. In the prior art, an additional heating device is usually used to heat the electrolyte to a suitable temperature and then pass it into the electrolyzer. For example, a Chinese invention patent application with application publication number CN117089868A and application publication date of November 21, 2023 discloses a heater, electrolysis device and electrolysis system for hydrogen production by an electrolyzer, wherein the heater includes a heater body, a switch module, a liquid inlet pipe and a liquid outlet pipe. After the electrolyte is heated in the heater, it is injected into the electrolyzer for electrolytic hydrogen production. This structure requires additional heating systems and pipelines, has a complex structure, and is costly. Utility Model Content

[0004] The purpose of the utility model is to provide an electrode for an electrolytic cell to solve the problem that an additional heating device is required during electrolytic reaction in the existing electrolytic cell, resulting in a complex structure and high cost. The purpose of the utility model is also to provide an electrolytic cell to solve the above problem.

[0005] In order to solve the above problems, the electrolytic cell electrode of the utility model adopts the following technical solutions:

[0006] An electrode for an electrolytic cell comprises an electric heating device for generating heat after being energized, wherein the outer side of the electric heating device is coated with an insulating heat-conducting layer, the outer side of the insulating heat-conducting layer is coated with a conductive layer, and the conductive layer is provided with a terminal connected to an external power supply.

[0007] Beneficial effects: The utility model provides a pioneering electrode for an electrolytic cell, which includes an electric heating device, an insulating heat-conducting layer is arranged outside the electric heating device, and a conductive layer is arranged outside the insulating heat-conducting layer. During the electrolytic reaction in the electrolytic cell, the electric heating device in the electrode can first heat the electrode itself, and the heat of the electrode is transferred to the electrolyte, thereby heating the electrolyte. At the same time, the insulating heat-conducting layer can guide the heat generated by the electric heating device while avoiding the external current in the electric heating device from interfering with the electrolytic reaction on the conductive layer. The utility model simplifies the overall structure, avoids the need to set up an additional heating system and pipelines to heat the electrolyte, and is relatively less expensive.

[0008] Furthermore, the electric heating device includes a magnetic layer for connecting to alternating current and a heat generating layer for cooperating with the magnetic layer to generate heat through electromagnetic induction.

[0009] Furthermore, the magnetic layer is provided with a magnetic coil for connecting to alternating current, and the heat generating layer is provided with an induction coil corresponding to the magnetic coil.

[0010] Furthermore, the magnetic layer is electrically connected to a control system, and the control system includes a control unit capable of adjusting the magnitude of the current flowing into the magnetic layer.

[0011] Furthermore, the heat generating layer is provided with a sensor for detecting the temperature of the heat generating layer, the sensor is connected to the control system signal to transmit the detected temperature signal to the control system, and the control system also includes a display device for displaying the temperature of the heat generating layer.

[0012] Furthermore, the electrode for the electrolytic cell is a flat block structure.

[0013] Furthermore, the heat generating layers are provided with two and are symmetrically arranged on both sides of the magnetic layer, the corresponding insulating heat conducting layers are also provided with two and are symmetrically arranged on the outside of the heat generating layer, and the conductive layers are also provided with two and are symmetrically arranged on the outside of the insulating heat conducting layer.

[0014] Alternatively, the electrolytic cell electrode is a columnar structure.

[0015] Furthermore, the magnetic layer is arranged to cover the heat generating layer.

[0016] In order to solve the above problems, the electrolytic cell of the utility model adopts the following technical solutions:

[0017] An electrolytic cell comprises an electrolytic cell body and an electrode arranged in the electrolytic cell body, the electrode comprises an electric heating device for generating heat after being energized, an insulating heat-conducting layer is arranged outside the electric heating device, a conductive layer is arranged outside the insulating heat-conducting layer, and a terminal for connecting an external power supply to perform an electrolytic reaction is arranged on the conductive layer.

[0018] Beneficial effects: The utility model is an improvement on the existing electrolytic cell, which includes an electrolytic cell body and an electrode, the electrode includes an electric heating device, an insulating heat-conducting layer is arranged outside the electric heating device, and a conductive layer is arranged outside the insulating heat-conducting layer. During the electrolytic reaction in the electrolytic cell, the electric heating device in the electrode can first heat the electrode itself, and the heat of the electrode is transferred to the electrolyte, thereby heating the electrolyte. At the same time, the insulating heat-conducting layer can guide the heat generated by the electric heating device while avoiding the external current in the electric heating device from interfering with the electrolytic reaction on the conductive layer. The utility model simplifies the overall structure, avoids the need to set up an additional heating system and pipelines to heat the electrolyte, and is relatively less expensive.

[0019] Furthermore, the electric heating device includes a magnetic layer for connecting to alternating current and a heat generating layer for cooperating with the magnetic layer to generate heat through electromagnetic induction.

[0020] Furthermore, the magnetic layer is provided with a magnetic coil for connecting to alternating current, and the heat generating layer is provided with an induction coil corresponding to the magnetic coil.

[0021] Furthermore, the magnetic layer is electrically connected to a control system, and the control system includes a control unit capable of adjusting the magnitude of the current flowing into the magnetic layer.

[0022] Furthermore, the heat generating layer is provided with a sensor for detecting the temperature of the heat generating layer, the sensor is connected to the control system signal to transmit the detected temperature signal to the control system, and the control system also includes a display device for displaying the temperature of the heat generating layer.

[0023] Furthermore, the electrode for the electrolytic cell is a flat block structure.

[0024] Furthermore, the heat generating layers are provided with two and are symmetrically arranged on both sides of the magnetic layer, the corresponding insulating heat conducting layers are also provided with two and are symmetrically arranged on the outside of the heat generating layer, and the conductive layers are also provided with two and are symmetrically arranged on the outside of the insulating heat conducting layer.

[0025] Alternatively, the electrolytic cell electrode is a columnar structure.

[0026] Furthermore, the magnetic layer is arranged to cover the heat generating layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the electrolytic cell;

[0028] Figure 2 yes Figure 1 The structural diagram of the control panel;

[0029] Figure 3 yes Figure 1 A schematic diagram of the structure of the middle electrode;

[0030] Figure 4 yes Figure 3 Schematic diagram of the structure of the middle plate magnetic layer;

[0031] Figure 5 yes Figure 3 Schematic diagram of the structure of the middle plate-shaped heat-generating layer;

[0032] Figure 6 yes Figure 1 Another schematic diagram of the structure of the middle electrode;

[0033] Figure 7 yes Figure 6 Schematic diagram of the structure of the middle columnar heat-generating layer;

[0034] In the figure: 1. power supply; 2. control panel; 201. display screen; 202. knob; 203. switch; 3. air guide hole; 4. diaphragm; 5. flow guide port; 6. electrolytic cell body; 7. electrode; 701. plate-shaped magnetic layer; 702. plate-shaped heat-generating layer; 703. plate-shaped insulating heat-conducting layer; 704. plate-shaped conductive layer; 705. bottom plate; 706. magnetic coil; 707. induction coil; 708. temperature sensing piece; 709. substrate; 711. columnar magnetic layer; 712. columnar heat-generating layer; 713. columnar insulating heat-conducting layer; 714. columnar conductive layer. DETAILED DESCRIPTION

[0035] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0036] First, the technical solution of the utility model is generally described as follows:

[0037] The electrolytic reaction needs to be carried out under certain temperature conditions to obtain the optimal reaction rate. The electrolytic cell of the prior art is usually equipped with an additional heating device to control the electrolysis of the electrolyte in a suitable temperature range. However, the configuration of an additional heating device is not only complex in structure and occupies a large volume, but also has a high cost. The utility model arranges an electric heating device on the electrode for the electrolytic cell, and the outer side of the electric heating device is coated with an insulating heat-conductive layer, and the outer side of the insulating heat-conductive layer is coated with a conductive layer. When the electrolytic reaction is carried out in the electrolytic cell, the electrolyte can be directly heated by the electrode for the electrolytic cell. At the same time, the insulating heat-conductive layer can remove the heat generated by the electric heating device while avoiding the external current in the electric heating device from interfering with the electrolytic reaction on the conductive layer. Not only does it optimize the structure and reduce the overall volume of the electrolytic cell, but it also reduces the cost.

[0038] Embodiment 1 of the electrolytic cell of the utility model:

[0039] like Figure 1As shown, the electrolytic cell includes an electrolytic cell body 6 and an electrode 7 arranged in the electrolytic cell body 6, and the electrode 7 is connected to the control panel 2 and the power supply 1. A diaphragm 4 is arranged in the electrolytic cell body 6, and the diaphragm 4 divides the electrolytic cell body 6 into a plurality of reaction chambers. In this embodiment, two diaphragms 4 are provided, thereby dividing the electrolytic cell body 6 into three chambers arranged at intervals, two electrodes 7 are provided in the middle chamber, and one electrode 7 is provided in each of the two side chambers. The electrodes 7 in the three chambers are connected to the positive electrode, the negative electrode, and the positive electrode power supply (not shown in the figure) in sequence for electrolytic reaction. The control panel 2 is the control system of the electrode 7, and the control system includes a control unit that can adjust the current size of the electrode 7. In other embodiments, the electrodes 7 in the three chambers can also be connected to the negative electrode, the positive electrode, and the negative electrode power supply in sequence for electrolytic reaction. Three or more diaphragms can also be provided in the electrolytic cell body 6 to divide the electrolytic cell body 6 into more chambers. Of course, only one diaphragm can also be provided, and it is only divided into two chambers. In this embodiment, the electrolytic cell is specifically used to electrolyze water to produce hydrogen. In other embodiments, the electrolytic cell can also be used to electrolyze other electrolytes to produce other products, such as electrolyzing sodium chloride solution to produce chlorine.

[0040] The electrode 7 includes an electric heating device for generating heat after being energized, an insulating heat-conducting layer is arranged outside the electric heating device, a conductive layer is arranged outside the insulating heat-conducting layer, and a terminal for connecting an external power source to perform an electrolytic reaction is arranged on the conductive layer. By arranging the electric heating device on the electrode 7, the electrode itself can be heated first by using the electric heating device inside the electrode, and the heat of the electrode is transferred to the electrolyte, and then the electrolyte can be heated to make the electrolyte reach a suitable reaction temperature. At the same time, the insulating heat-conducting layer wrapped outside the electric heating device insulates and isolates the electric heating device while conducting heat, so as to prevent the current in the electric heating device from interfering with the electrolytic reaction of the conductive layer.

[0041] In this embodiment, if Figure 3 , Figure 4 , Figure 5As shown, the electrode 7 is a flat block structure, that is, the whole is plate-shaped. It includes a plate-shaped magnetic layer 701, a plate-shaped heat-generating layer 702, a plate-shaped insulating heat-conducting layer 703 and a plate-shaped conductive layer 704. The plate-shaped magnetic layer 701 is connected to the AC power supply 1, and the plate-shaped heat-generating layer 702 is coated on the outside of the plate-shaped magnetic layer 701 and generates heat through electromagnetic induction. Specifically, the plate-shaped heat-generating layer 702 is provided with two and symmetrically arranged on both sides of the plate-shaped magnetic layer 701, and the corresponding plate-shaped insulating heat-conducting layer 703 is also provided with two and symmetrically arranged on the outside of the plate-shaped heat-generating layer 702, and the plate-shaped conductive layer 704 is also provided with two and symmetrically arranged on the outside of the plate-shaped insulating heat-conducting layer 703. The plate-shaped conductive layer 704 is provided with a terminal (not shown in the figure) for connecting an external power supply to perform an electrolytic reaction. The plate-shaped magnetic layer 701 is connected to an AC power source 1 to generate a certain amount of heat and a changing magnetic field. The plate-shaped heat-generating layer 702 generates eddy current heat through electromagnetic induction in the changing magnetic field generated by the plate-shaped magnetic layer 701. The plate-shaped heat-generating layer 702 is symmetrically arranged on both sides of the plate-shaped magnetic layer 701 to fully utilize electromagnetic induction to generate more heat. The overall structure is simple and easy to set up. In other embodiments, the electric heating device may not be a magnetic layer connected to AC power and a heat-generating layer that generates heat through electromagnetic induction. It can be directly a high-resistance conductor connected to a power source, and directly use resistance heat generation to heat the electrolyte.

[0042] like Figure 4 , 5 As shown, the plate-shaped magnetic layer 701 includes a bottom plate 705 and a magnetic coil 706 disposed on the bottom plate 705 for connecting to alternating current, and the plate-shaped heat-generating layer 702 includes a substrate 709 and an induction coil 707 disposed corresponding to the magnetic coil 706. By providing the magnetic coil 706 and the induction coil 707 instead of a single wire, the heat-generating capacity of the electric heating device is improved, and the electrolyte is quickly heated to a suitable temperature. In other embodiments, the plate-shaped heat-generating layer 702 can also be a metal plate coated on the outside of the magnetic coil 706 of the plate-shaped magnetic layer 701, and the metal plate generates heat through eddy currents generated by the changing magnetic field generated by the magnetic coil 706.

[0043] like Figure 1 , 2As shown in Figures 4 and 5, in order to facilitate monitoring and controlling the temperature of the electrolyte, the plate-shaped magnetic layer 701 is electrically connected to the control system, and the plate-shaped heat-generating layer 702 is provided with a sensor for detecting the temperature of the heat-generating layer. The sensor is connected to the control system signal to transmit the detected temperature signal to the control system. The control system includes a control unit for adjusting the magnitude of the current passed into the magnetic layer and a display device for displaying the temperature of the heat-generating layer. Specifically, the control panel 2 is the control system. The control panel 2 includes a display screen 201 for displaying the temperature of the heat-generating layer and a knob 202 for adjusting the magnitude of the current passed into the magnetic layer. The control panel 2 is also provided with a switch 203 for turning the control panel 2 on and off. The sensor on the plate-shaped heat-generating layer 702 is specifically a temperature-sensing piece 708. Through the cooperation of the temperature-sensing piece 708 and the control panel 2, it is convenient to change the heat generation of the plate-shaped heat-generating layer 702 by adjusting the magnitude of the current, thereby keeping the electrolyte in the electrolytic cell body 6 at a suitable reaction temperature.

[0044] When producing hydrogen by electrolysis, the overall working process of the electrolyzer is as follows:

[0045] Here, the production of hydrogen by electrolysis of water is taken as an example. The electrolyte is introduced into each chamber in the electrolytic cell body 6 through the flow guide port 5. The knob 203 in the control panel 2 is turned on to allow the power supply 1 to pass alternating current to the magnetic coil 706 of the plate-shaped magnetic layer 701 in the electrode 7. While the magnetic coil 706 generates heat, a changing magnetic field is generated due to electromagnetic induction. The induction coil 707 on the plate-shaped heat-generating layer 702 generates eddy currents in the changing magnetic field to heat the electrolyte. The temperature sensing piece 708 on the plate-shaped heat-generating layer 702 cooperates with the control panel 2 to control the electrolyte at a suitable temperature. The plate-shaped conductive layer 704 on the electrode 7 is connected to an external power supply (not shown in the figure) to electrolyze the electrolyte to generate hydrogen and oxygen. The hydrogen and oxygen are respectively discharged through the air guide holes 3 to corresponding collection devices (not shown in the figure).

[0046] In other embodiments of the electrolytic cell: the control system of the electrode for the electrolytic cell no longer has a control unit for adjusting the magnitude of the current passed into the magnetic layer, and the control system directly passes a current of a certain value into the magnetic layer.

[0047] In other embodiments of the electrolytic cell: the heat-generating layer of the electrolytic cell electrode is no longer provided with a sensor for detecting the temperature of the heat-generating layer, and the control system is no longer provided with a display device for displaying the temperature of the heat-generating layer, but a temperature measuring device for detecting the temperature of the electrolyte is directly provided in the electrolytic cell body. Alternatively, in other embodiments, no temperature detection device is provided in the electrolytic cell electrode and the electrolytic cell body, and the corresponding temperature of the electrolyte is directly calculated by calculation.

[0048] In other embodiments of the electrolytic cell: the electrolytic cell electrode has only one heat-generating layer arranged on one side of the magnetic layer, two insulating heat-conducting layers are provided and arranged on the outside of the heat-generating layer and the magnetic layer, and two conductive layers are also provided and arranged on the outside of the insulating heat-conducting layers.

[0049] Embodiment 2 of the electrolytic cell of the utility model:

[0050] The structure of the electrolytic cell body in this embodiment is the same as that in Example 1. The difference from Example 1 is that the electrodes in this embodiment are columnar structures, such as Figure 6 , 7 As shown, it includes a columnar heat generating layer 712 and a columnar magnetic layer 711 coated on the outside of the columnar heat generating layer. The columnar heat generating layer 712 and the columnar magnetic layer 711 constitute an electric heating device. The outside of the electric heating device is coated with a columnar insulating heat conductive layer 713, and the outside of the columnar insulating heat conductive layer 713 is coated with a columnar conductive layer 714. Specifically, the columnar heat generating layer 712 is a columnar conductor, and the columnar magnetic layer 711 is a spiral coil wound on the outside of the columnar heat generating layer 712. The spiral coil is connected to the power supply 1 through the control panel 2. When an alternating current is passed, the spiral coil generates a certain amount of heat and a changing magnetic field. The columnar heat generating layer 712 generates eddy currents in the changing magnetic field and generates heat. The heat generated by the columnar heat generating layer 712 and the columnar magnetic layer 711 is transferred from the columnar insulating heat conductive layer 713 to the columnar conductive layer 714 to heat the electrolyte. In this embodiment, the columnar heat generating layer 712 is specifically a columnar conductor. In other embodiments, the columnar heat generating layer may also be an induction coil corresponding to the magnetic coil of the columnar magnetic layer 701 .

[0051] In other embodiments of the electrolytic cell: the heat-generating layer of the electrolytic cell electrode is arranged to cover the magnetic layer.

[0052] Embodiments of the electrode for electrolytic cell of the utility model:

[0053] The specific structure of the electrode for the electrolytic cell is the same as that of the electrode in the above-mentioned electrolytic cell embodiment, and will not be described in detail here.

[0054] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electrode for an electrolytic cell, characterized in that: It comprises an electric heating device for generating heat after being energized, wherein an insulating heat-conducting layer is arranged outside the electric heating device, a conductive layer is arranged outside the insulating heat-conducting layer, and a terminal for connecting an external power source to carry out an electrolytic reaction is arranged on the conductive layer.

2. The electrolytic cell electrode according to claim 1, characterized in that: The electric heating device comprises a magnetic layer for connecting to alternating current and a heat generating layer for cooperating with the magnetic layer to generate heat through electromagnetic induction.

3. The electrolytic cell electrode according to claim 2, characterized in that: The magnetic layer is provided with a magnetic coil for connecting to alternating current, and the heat generating layer is provided with an induction coil corresponding to the magnetic coil.

4. The electrolytic cell electrode according to claim 2, characterized in that: The magnetic layer is electrically connected to a control system, which includes a control unit capable of adjusting the magnitude of the current flowing into the magnetic layer.

5. The electrolytic cell electrode according to claim 4, characterized in that: The heat generating layer is provided with a sensor for detecting the temperature of the heat generating layer. The sensor is connected to the control system signal to transmit the detected temperature signal to the control system. The control system also includes a display device for displaying the temperature of the heat generating layer.

6. The electrolytic cell electrode according to any one of claims 2 to 5, characterized in that: The electrolytic cell electrode is a flat block structure.

7. The electrolytic cell electrode according to claim 6, characterized in that: The heat generating layers are provided with two and are symmetrically arranged on both sides of the magnetic layer, the corresponding insulating heat conducting layers are also provided with two and are symmetrically arranged on the outside of the heat generating layers, and the conductive layers are also provided with two and are symmetrically arranged on the outside of the insulating heat conducting layers.

8. The electrolytic cell electrode according to any one of claims 2 to 5, characterized in that: The electrolytic cell electrode is a columnar structure.

9. The electrolytic cell electrode according to claim 8, characterized in that: The magnetic layer is arranged to cover the heat generating layer.

10. An electrolytic cell, comprising an electrolytic cell body and electrodes arranged in the electrolytic cell body, characterized in that: The electrode is an electrode for an electrolytic cell as described in any one of claims 1 to 9.

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