CN112582642A - Heat preservation heating device for hydrogen supply and hydrogen return of fuel cell - Google Patents
Heat preservation heating device for hydrogen supply and hydrogen return of fuel cell Download PDFInfo
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- CN112582642A CN112582642A CN202011580406.3A CN202011580406A CN112582642A CN 112582642 A CN112582642 A CN 112582642A CN 202011580406 A CN202011580406 A CN 202011580406A CN 112582642 A CN112582642 A CN 112582642A
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- hydrogen
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04708—Temperature of fuel cell reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04768—Pressure; Flow of the coolant
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04828—Humidity; Water content
- H01M8/04835—Humidity; Water content of fuel cell reactants
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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
- Y02E60/50—Fuel cells
Abstract
The invention relates to a heat-preservation heating device for supplying and returning hydrogen to a fuel cell, which comprises a heat-preservation unit and a heating unit, wherein the heat-preservation unit is arranged between a cooling liquid outlet pipeline and a hydrogen outlet pipeline, and is used for preserving the heat of the hydrogen in the hydrogen outlet pipeline by using cooling liquid in the cooling liquid outlet pipeline; the heating unit is arranged between the cooling liquid outlet pipeline and the hydrogen inlet pipeline, and heats the hydrogen in the hydrogen inlet pipeline by using the cooling liquid in the cooling liquid outlet pipeline. The hydrogen way is heated in a heat preservation way by utilizing the waste heat of the cooling liquid, so that additional parts of the system are reduced, and the additional power consumption of the system is reduced; and the flow of the cooling liquid can be adjusted through the three-way adjusting valve, so that the temperature and the humidity of the hydrogen at the inlet of the fuel cell stack are controlled, and the requirements on the temperature and the humidity of the hydrogen at the inlet under different fuel cell stacks and different working conditions are met.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a heat-preservation heating device for hydrogen supply and hydrogen return of a fuel cell.
Background
Traditional power devices, including gasoline engines, diesel engines and the like, all need to convert chemical energy into heat energy and convert the heat energy into mechanical energy in a combustion mode, and can release harmful gases such as COx, NOx and SOx and pollutants such as PM particles in the conversion process, so that the thermal efficiency is low, and the environment is polluted. A hydrogen fuel cell is characterized in that hydrogen and oxygen are respectively supplied to an anode and a cathode by utilizing the reverse reaction of electrolyzed water, the hydrogen releases electrons under the action of a catalyst, hydrogen ions flow to the cathode through a proton exchange membrane, the electrons reach the cathode through external circulation so as to generate current, and the hydrogen ions are combined with the oxygen and the electrons at the cathode to generate water. The process of hydrogen fuel cell generation is an electrochemical reaction, which directly converts chemical energy into electrical energy, and the final product of the whole process is water. The hydrogen fuel cell is a new energy source with no pollution, no noise and high efficiency, and has great development potential.
In the hydrogen fuel cell system, the hydrogen circulation mode is basically adopted, unreacted hydrogen of the fuel cell stack circulates to a hydrogen inlet through the hydrogen circulation device, the utilization rate of the hydrogen is improved, meanwhile, the hydrogen circulation can also improve the water balance in the stack, the water flooding in the stack is avoided, and the working efficiency of the stack is improved. However, the conventional hydrogen circulation system has many problems in use. Firstly, because the temperature of the circulating hydrogen is high and the circulating hydrogen is generally in a water vapor saturation state, condensation is easily generated in the circulating process to generate liquid water, so that the fuel cell stack is flooded, and the liquefaction of the water vapor can cause the humidity of the hydrogen entering the fuel cell stack to be reduced, thereby reducing the performance of the fuel cell stack. Secondly, the hydrogen entering the fuel cell stack through the pressure reducing valve is usually at a low temperature, and after being mixed with the circulating high-temperature high-humidity hydrogen, the hydrogen also causes water vapor liquefaction phenomena to different degrees according to different circulating flow rates. In addition, the common devices such as the electromagnetic valve and the pressure reducing valve have poor low-temperature resistance, and the devices need to be heated to work normally when the ambient temperature is low.
At present, the mode of hydrogen way heat preservation heating is mostly an electric heating mode, and an additional heating element needs to be added, so that the additional power consumption of the fuel cell system is increased. While increasing the complexity of the system control program.
Therefore, there is a need in the art for a simple and effective insulated heating device.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a heat preservation and heating device for hydrogen supply and hydrogen return of a fuel cell.
In order to achieve the object of the present invention, the present application provides the following technical solutions.
In a first aspect, the present application provides a thermal insulation heating device for hydrogen supply and hydrogen return of a fuel cell, wherein a stack of the fuel cell is provided with a coolant inlet, a coolant outlet, a hydrogen inlet and a hydrogen outlet, wherein the coolant inlet is connected to a coolant inlet pipeline, the coolant outlet is connected to a coolant outlet pipeline, the hydrogen inlet is connected to a hydrogen inlet pipeline, the hydrogen outlet is connected to a hydrogen outlet pipeline, and the thermal insulation heating device comprises a thermal insulation unit and a heating unit, wherein the thermal insulation unit is arranged between the coolant outlet pipeline and the hydrogen outlet pipeline, and is configured to perform thermal insulation on hydrogen in the hydrogen outlet pipeline by using coolant in the coolant outlet pipeline; the heating unit is arranged between the cooling liquid outlet pipeline and the hydrogen inlet pipeline, and heats the hydrogen in the hydrogen inlet pipeline by using the cooling liquid in the cooling liquid outlet pipeline. Compare in current heat preservation heating system, the biggest improvement point of this application just lies in utilizing the coolant liquid of coolant liquid exit to keep warm to returning hydrogen to advancing hydrogen and heating, can realizing this technological effect the leading cause and lie in: the coolant temperature at coolant outlet department is higher, and the hydrogen temperature of hydrogen outlet pipeline department is close (slightly low) with the coolant temperature at coolant outlet department, consequently keeps warm with the hydrogen in the coolant outlet pipeline in to the hydrogen outlet pipeline, can effectively avoid the vapor condensation in the hydrogen, reduces the appearance of flooding phenomenon. After the heat preservation is finished, the temperature of the cooling liquid does not drop too much and is still in a higher state, and then the hydrogen from the hydrogen source is heated by utilizing the part of heat, so that the separation of condensed water in the hydrogen return after the part of hydrogen is mixed with the hydrogen return is avoided, and the occurrence of a flooding phenomenon is further reduced. The device does not need an additional heat source, and is simpler in structure.
In an implementation manner of the first aspect, a hydrogen inlet pressure regulating valve, a hydrogen inlet solenoid valve and an ejector are sequentially arranged on the hydrogen inlet pipeline, a water-gas separator is arranged on the hydrogen outlet pipeline, a drainage pipeline is arranged at the bottom of the water-gas separator, a drainage solenoid valve is arranged on the drainage pipeline, an exhaust pipeline is arranged at the top of the water-gas separator, the exhaust pipeline is divided into a hydrogen exhaust pipeline and a hydrogen return pipeline, the hydrogen exhaust pipeline is provided with the hydrogen exhaust solenoid valve, and the hydrogen return pipeline is communicated with the ejector in a circulating manner.
In an embodiment of the first aspect, heat-insulating pipe sleeves are arranged outside the hydrogen outlet pipeline, outside the water-gas separator, outside the exhaust pipeline and outside the hydrogen return pipeline, all the heat-insulating pipe sleeves are sequentially communicated, the heat-insulating pipe sleeve outside the hydrogen outlet pipeline is connected with the cooling liquid outlet pipeline, and the heat-insulating pipe sleeve is internally filled with the cooling liquid in the cooling liquid outlet pipeline. This design is an optimal heat preservation scheme, also can carry out the heat transfer to hydrogen in hydrogen outlet pipeline, exhaust duct and the return hydrogen pipeline through a plurality of heat exchangers, plays heat retaining function, and other can make cooling water and return hydrogen carry out the heat exchange and reach the device that returns hydrogen heat preservation effect all can.
In one embodiment of the first aspect, the cooling liquid outlet pipeline is provided with a three-way regulating valve, one outlet of the three-way regulating valve is connected with the cooling liquid recovery device, and the other outlet of the three-way regulating valve is communicated with the heat preservation pipe sleeve. The three-way regulating valve is arranged, so that the flow of the cooling liquid for heat preservation and heating can be regulated, and the requirements on inlet hydrogen temperature and humidity under different fuel cell stacks and different working conditions are met.
In an embodiment of the first aspect, the heating unit includes a heat exchanger, a cold source inlet of the heat exchanger is connected to an outlet of the hydrogen inlet pressure regulating valve, a cold source outlet of the heat exchanger is connected to an inlet of the hydrogen inlet electromagnetic valve, a heat source inlet of the heat exchanger is connected to an outlet of the heat-insulating tube sleeve, and a heat source outlet of the heat exchanger is connected to the coolant recovery device.
In one embodiment of the first aspect, the hydrogen inlet pressure regulating valve is one or more of a mechanical pressure reducing valve, a proportional valve, or a hydrogen injector in combination.
In one embodiment of the first aspect, a safety valve is provided between the hydrogen inlet solenoid valve and the ejector.
In one embodiment of the first aspect, a temperature sensor and a pressure sensor are provided at the hydrogen inlet. The temperature and the pressure of control hydrogen entrance hydrogen when its deviation appears, and the accessible is used for the flow of the coolant liquid that keeps warm and heat in adjusting the three-way control valve, comes stabilizing temperature and pressure for the pile is in more efficient operating condition.
Compared with the prior art, the invention has the beneficial effects that:
(1) compared with the conventional hydrogen path heat-preservation heating scheme, the hydrogen path is subjected to heat-preservation heating by utilizing the waste heat of the cooling liquid, so that the additional parts of the system are reduced, and the additional power consumption of the system is reduced;
(2) the flow of the cooling liquid can be adjusted through the three-way adjusting valve, so that the temperature and the humidity of the hydrogen at the inlet of the fuel cell stack are controlled, and the requirements on the temperature and the humidity of the hydrogen at the inlet under different fuel cell stacks and different working conditions are met;
(3) the waste heat of the cooling liquid is utilized, the efficiency of the fuel cell system is improved, and the heat dissipation load of the radiator is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a heat-insulating heating apparatus according to the present application.
In the drawing, 1 is a hydrogen inlet pressure regulating valve, 2 is a heat exchanger, 3 is a hydrogen inlet electromagnetic valve, 4 is a safety valve, 5 is an ejector, 6 is a pressure sensor, 7 is a temperature sensor, 8 is a galvanic pile, 9 is a water-gas separator, 10 is a hydrogen exhaust electromagnetic valve, 11 is a water exhaust electromagnetic valve, 12 is a three-way regulating valve, 13 is a heater, 14 is a hydrogen inlet, 15 is a hydrogen outlet, 16 is a cooling liquid inlet, 17 is a cooling liquid outlet, 18 is a hydrogen outlet pipeline, 19 is an exhaust pipeline, 20 is a hydrogen return pipeline, 21 is a hydrogen exhaust pipeline, 22 is a heat preservation pipe sleeve, 23 is a hydrogen inlet pipeline, 24 is a waste hydrogen pipeline, 25 is a water discharge pipeline, 26 is a cooling liquid inlet pipeline, 27 is a cooling liquid outlet pipeline, and 28 is a cooling liquid return pipeline.
Detailed Description
Unless otherwise defined, technical or scientific terms used herein in the specification and claims should have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. All numerical values recited herein as between the lowest value and the highest value are intended to mean all values between the lowest value and the highest value in increments of one unit when there is more than two units difference between the lowest value and the highest value.
While specific embodiments of the invention will be described below, it should be noted that in the course of the detailed description of these embodiments, in order to provide a concise and concise description, all features of an actual implementation may not be described in detail. Modifications and substitutions to the embodiments of the present invention may be made by those skilled in the art without departing from the spirit and scope of the present invention, and the resulting embodiments are within the scope of the present invention.
Examples
The following will describe in detail the embodiments of the present invention, which are implemented on the premise of the technical solution of the present invention, and the detailed embodiments and the specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The structure of the heat preservation and heating device for supplying and returning hydrogen of the fuel cell is shown in figure 1, a galvanic pile 8 of the fuel cell comprises a hydrogen inlet 14, a hydrogen outlet 15, a cooling liquid inlet 16 and a cooling liquid outlet 17, wherein the hydrogen inlet 14 is connected with a hydrogen inlet pipeline 23, and a hydrogen inlet pressure regulating valve 1, a heat exchanger 2, a hydrogen inlet electromagnetic valve 3, a safety valve 4, an ejector 5, a pressure sensor 6 and a temperature sensor 7 are sequentially arranged on the hydrogen inlet pipeline 23. The hydrogen outlet 15 is connected with the water-gas separator 9 through a hydrogen outlet pipeline 18, the top of the water-gas separator 9 is connected with an exhaust pipeline 19, then the exhaust pipeline 19 is divided into a hydrogen return pipeline 20 and a hydrogen discharge pipeline 21, the hydrogen return pipeline 20 is connected with the ejector 5, the tail end of the hydrogen discharge pipeline 21 is provided with a hydrogen discharge electromagnetic valve 10, and the hydrogen discharge electromagnetic valve 10 is connected with a hydrogen recovery device (not shown in the figure) through a waste hydrogen pipeline 24. And heat-insulating pipe sleeves 22 are arranged outside the hydrogen outlet pipeline 18, the water-gas separator 9, the exhaust pipeline 19 and the hydrogen return pipeline 20. The bottom of the water-gas separator 9 is connected with a water discharge pipeline 25, and a water discharge electromagnetic valve 11 is arranged on the water discharge pipeline 25.
The coolant inlet 16 is connected to a coolant inlet pipe 26, and a heater 13 is provided on the coolant inlet pipe 26. The cooling liquid outlet 17 is connected with a cooling liquid outlet pipeline 27, the other end of the cooling liquid outlet pipeline 27 is provided with a three-way regulating valve 12, one outlet of the three-way regulating valve 12 is communicated with the heat preservation pipe sleeve 22 outside the hydrogen outlet pipeline 18, and the other outlet of the three-way regulating valve 12 is connected with a cooling liquid recovery device (not shown in the figure) through a cooling liquid recovery pipeline 28. The heat-preserving pipe sleeve 22 outside the hydrogen return pipeline 20 is connected with a heat source inlet of the heat exchanger 2, and a heat source outlet of the heat exchanger 2 is connected with a cooling liquid recovery device (not shown in the figure) through a cooling liquid recovery pipeline 28.
With the device of the embodiment, through actual operation, various data are monitored as follows:
hydrogen source temperature: 20.5 deg.C
Temperature of hydrogen source entering ejector: 40.3 deg.C
Temperature at hydrogen inlet: 49.3 deg.C
Dew point at the hydrogen inlet: 42.8 deg.C
Temperature at the hydrogen outlet: 66.6 deg.C
Temperature of hydrogen return to the eductor: 68.2 deg.C
Inlet temperature of cooling liquid: 67.1 deg.C
Outlet temperature of cooling liquid: 74.9 deg.C
Hydrogen gas circulation reflux ratio: 1.5.
therefore, the device can not only keep the temperature of the hydrogen (even slightly raised), but also heat the hydrogen of the hydrogen source, so that the hydrogen entering the galvanic pile is higher than the dew point temperature, the condensation of water vapor is avoided, and the occurrence of the flooding problem is reduced.
The embodiments described above are intended to facilitate the understanding and appreciation of the application by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present application is not limited to the embodiments herein, and those skilled in the art who have the benefit of this disclosure will appreciate that many modifications and variations are possible within the scope of the present application without departing from the scope and spirit of the present application.
Claims (8)
1. A fuel cell hydrogen supply and hydrogen return heat preservation heating device is characterized in that the heat preservation heating device comprises a heat preservation unit and a heating unit, wherein the heat preservation unit is arranged between a cooling liquid outlet pipeline and a hydrogen outlet pipeline, and the cooling liquid in the cooling liquid outlet pipeline is used for preserving heat of hydrogen in the hydrogen outlet pipeline; the heating unit is arranged between the cooling liquid outlet pipeline and the hydrogen inlet pipeline, and heats the hydrogen in the hydrogen inlet pipeline by using the cooling liquid in the cooling liquid outlet pipeline.
2. The heat-insulating and heating device for supplying and returning hydrogen to and from a fuel cell as claimed in claim 1, wherein the hydrogen inlet pipeline is sequentially provided with a hydrogen inlet pressure regulating valve, a hydrogen inlet solenoid valve and an ejector, the hydrogen outlet pipeline is provided with a moisture separator, the bottom of the moisture separator is provided with a water discharge pipeline, the water discharge pipeline is provided with a water discharge solenoid valve, the top of the moisture separator is provided with an exhaust pipeline, the exhaust pipeline is divided into a hydrogen discharge pipeline and a hydrogen return pipeline, the hydrogen discharge pipeline is provided with a hydrogen discharge solenoid valve, and the hydrogen return pipeline is circularly communicated with the ejector.
3. The heat-insulating heating device for supplying and returning hydrogen to the fuel cell as claimed in claim 2, wherein heat-insulating sleeves are disposed outside the hydrogen outlet pipeline, the moisture separator, the exhaust pipeline and the hydrogen return pipeline, all of the heat-insulating sleeves are sequentially communicated with each other, the heat-insulating sleeve outside the hydrogen outlet pipeline is connected with the coolant outlet pipeline, and the heat-insulating sleeve is filled with the coolant in the coolant outlet pipeline.
4. A thermal insulation heating device for supplying and returning hydrogen to a fuel cell as claimed in claim 3, wherein the cooling liquid outlet pipeline is provided with a three-way regulating valve, one outlet of the three-way regulating valve is connected with the cooling liquid recovery device, and the other outlet of the three-way regulating valve is communicated with the thermal insulation pipe sleeve.
5. A heat-insulating heating device for supplying and returning hydrogen to a fuel cell as claimed in claim 3, wherein the heating unit comprises a heat exchanger, a cold source inlet of the heat exchanger is connected with an outlet of the hydrogen inlet pressure regulating valve, a cold source outlet of the heat exchanger is connected with an inlet of the hydrogen inlet electromagnetic valve, a heat source inlet of the heat exchanger is connected with an outlet of the heat-insulating sleeve, and a heat source outlet of the heat exchanger is connected with the cooling liquid recovery device.
6. A fuel cell hydrogen supply and return thermal insulation heating device as claimed in claim 2, wherein the hydrogen inlet pressure regulating valve is one or more of a mechanical pressure reducing valve, a proportional valve and a hydrogen injector.
7. The fuel cell hydrogen supply and return thermal insulation heating device according to claim 2, wherein a safety valve is provided between the hydrogen inlet electromagnetic valve and the ejector.
8. A fuel cell hydrogen supply and return thermal insulation heating device as claimed in claim 1, wherein a temperature sensor and a pressure sensor are provided at the hydrogen gas inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011580406.3A CN112582642A (en) | 2020-12-28 | 2020-12-28 | Heat preservation heating device for hydrogen supply and hydrogen return of fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011580406.3A CN112582642A (en) | 2020-12-28 | 2020-12-28 | Heat preservation heating device for hydrogen supply and hydrogen return of fuel cell |
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| Publication Number | Publication Date |
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| CN112582642A true CN112582642A (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011580406.3A Pending CN112582642A (en) | 2020-12-28 | 2020-12-28 | Heat preservation heating device for hydrogen supply and hydrogen return of fuel cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114566673A (en) * | 2022-01-13 | 2022-05-31 | 上海杰宁新能源科技发展有限公司 | Temperature-controllable heat-preservation heating device for hydrogen supply and hydrogen return of fuel cell |
| CN116936869A (en) * | 2023-09-15 | 2023-10-24 | 北京英博新能源有限公司 | Hydrogen fuel cell ejector and hydrogen circulation system |
-
2020
- 2020-12-28 CN CN202011580406.3A patent/CN112582642A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114566673A (en) * | 2022-01-13 | 2022-05-31 | 上海杰宁新能源科技发展有限公司 | Temperature-controllable heat-preservation heating device for hydrogen supply and hydrogen return of fuel cell |
| CN114566673B (en) * | 2022-01-13 | 2023-11-21 | 上海杰宁新能源科技发展有限公司 | Temperature-controllable heat-preserving and heating device for hydrogen supply and hydrogen return of fuel cell |
| CN116936869A (en) * | 2023-09-15 | 2023-10-24 | 北京英博新能源有限公司 | Hydrogen fuel cell ejector and hydrogen circulation system |
| CN116936869B (en) * | 2023-09-15 | 2024-01-16 | 北京英博新能源有限公司 | Hydrogen fuel cell ejector and hydrogen circulation system |
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Effective date of registration: 20220407 Address after: 361026 unit d0214, unit 611, No. 9-1, Xiayang South Road, Haicang District, Xiamen City, Fujian Province Applicant after: Xiamen NEXEN Energy Technology Co.,Ltd. Address before: No.2303 Taihu Avenue, Changxing Economic Development Zone, Huzhou City, Zhejiang Province Applicant before: NEKSON POWER TECHNOLOGY Co.,Ltd. |