CN113823814A - Ejector integrated with temperature control function and hydrogen side system architecture of fuel cell - Google Patents

Ejector integrated with temperature control function and hydrogen side system architecture of fuel cell Download PDF

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Publication number
CN113823814A
CN113823814A CN202010563245.0A CN202010563245A CN113823814A CN 113823814 A CN113823814 A CN 113823814A CN 202010563245 A CN202010563245 A CN 202010563245A CN 113823814 A CN113823814 A CN 113823814A
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China
Prior art keywords
temperature control
cavity
hydrogen
ejector
control function
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Pending
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CN202010563245.0A
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Chinese (zh)
Inventor
闪念
张国强
丁铁新
刘园园
杨绍军
张禾
贾能铀
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Beijing Sinohytec Co Ltd
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Beijing Sinohytec Co Ltd
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Priority to CN202010563245.0A priority Critical patent/CN113823814A/en
Publication of CN113823814A publication Critical patent/CN113823814A/en
Pending legal-status Critical Current

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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
    • H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
    • H01M8/04268—Heating of fuel cells during the start-up of the fuel cells
    • 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
    • H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
    • 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
    • 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
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04126—Humidifying
    • 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
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • 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
    • H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
    • H01M8/04253—Means for solving freezing problems
    • 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
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0432—Temperature; Ambient temperature
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel Cell (AREA)

Abstract

The application provides an integrated control by temperature change function's ejector and fuel cell hydrogen side system architecture includes: the gas inlet part, the temperature control part and the gas outlet part, wherein one end of the gas inlet part is connected with one end of the temperature control part, the other end of the temperature control part is connected with one end of the gas outlet part, the temperature control part comprises a flow introduction port, a jet flow inlet, a backflow cavity, a fresh hydrogen cavity and a mixing cavity, and a heating module is arranged between the backflow cavity and the fresh hydrogen cavity. The ejector integrating the temperature control function and the hydrogen side system architecture of the fuel cell solve the problems that the existing ejector product has no temperature control function, is easy to freeze in the cold start process, and the system performance is abnormal due to the fact that the pile hydrogen pile entering humidity is difficult to control, and have the advantages of being capable of monitoring and controlling the temperature in real time, not easy to freeze, being properly controllable in the pile entering process and the like.

Description

Ejector integrated with temperature control function and hydrogen side system architecture of fuel cell
Technical Field
The invention relates to the field of ejectors, in particular to an ejector integrating a temperature control function and a fuel cell hydrogen side system framework.
Background
The fuel cell system has the core that hydrogen reacts with oxygen to generate water, chemical energy is converted into electric energy to be utilized, and the fuel cell system has the advantages of environmental protection, high efficiency, quick response, stable operation, low noise and the like. The hydrogen supply system of the fuel cell for the current vehicle adopts a hydrogen circulation mode, namely, hydrogen is excessively supplied to the electric pile, and residual hydrogen after reaction consumption is recirculated to the electric pile, so that the utilization rate of the hydrogen can be improved, the humidity of the hydrogen side of the electric pile is improved, and the working efficiency of the electric pile is improved. The operating performance of the circulation device in the hydrogen circulation system directly affects the fuel cell system performance.
Currently, a relatively common circulation system is driven by a hydrogen circulation pump or an ejector. The hydrogen circulating pump needs additional power supply, the ejector does not need external energy supply, no moving part is needed, the hydrogen circulating pump has the advantages of simple structure, low cost and the like, and the hydrogen circulating pump is applied more and more in a fuel cell hydrogen circulating system.
"Cold start" is one of the challenges of fuel cell systems. In a low-temperature environment, moisture contained in the reflux mixed gas in the hydrogen circulation system exists in the form of liquid condensed water or solid ice. The caliber of the jet throat of the ejector is very small, and the small deviation of the caliber can cause great fluctuation of the hydrogen supply quantity. The throat of the ejector is close to the backflow cavity, the airflow in the backflow cavity contains a large proportion of liquid water, the fuel supply channel can be blocked after icing, and even if the throat covers a thin ice layer, the hydrogen supply amount can be obviously influenced, so that the performance of the fuel cell system is reduced.
The humidity of the hydrogen side of the stack has a large influence on the performance of the stack, and the humidity of the hydrogen side is sensitive to the temperature influence. Particularly in a low-temperature environment, the temperature of fresh supply hydrogen and return hydrogen is low, liquid water is easy to separate out, and the humidity of the hydrogen entering the reactor is difficult to control. The temperature of the backflow gas is increased, the separation of liquid water can be reduced, and the pile-entering humidity of the hydrogen of the galvanic pile is improved.
Disclosure of Invention
In order to solve the above problem, the present application provides an ejector with an integrated temperature control function and a hydrogen side system architecture of a fuel cell, including: the gas inlet part, the temperature control part and the gas outlet part, wherein one end of the gas inlet part is connected with one end of the temperature control part, the other end of the temperature control part is connected with one end of the gas outlet part, the temperature control part comprises a flow introduction port, a jet flow inlet, a backflow cavity, a fresh hydrogen cavity and a mixing cavity, and a heating module is arranged between the backflow cavity and the fresh hydrogen cavity.
Further, the heating module includes a heating unit, a heat conductive layer, a sealing layer, and a temperature sensor.
Furthermore, one end of the fresh hydrogen cavity is provided with a drainage inlet, the other end of the fresh hydrogen cavity is connected with one end of the mixing cavity, and the other end of the mixing cavity is connected with the diffusion cavity.
Further, the backflow cavity is connected with both the fresh hydrogen cavity and the mixing cavity.
Furthermore, a drainage inlet is arranged on the reflux cavity.
Further, one end of the temperature control part far away from the mixing cavity is provided with a temperature sensor.
Furthermore, one end of the temperature control part, which is far away from the mixing cavity, is provided with a temperature sensor, and the top end of the temperature sensor is provided with a heating module.
Further, one end, far away from the heating module, of the temperature sensor is provided with a sensor wiring port.
Further, a fuel cell hydrogen side system architecture includes an ejector incorporating temperature control functionality according to various embodiments.
The ejector integrating the temperature control function and the hydrogen side system architecture of the fuel cell solve the problems that the existing ejector product has no temperature control function, is easy to freeze in the cold start process, and the system performance is abnormal due to the fact that the pile hydrogen pile entering humidity is difficult to control, and have the advantages of being capable of monitoring and controlling the temperature in real time, not easy to freeze, being properly controllable in the pile entering process and the like.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic diagram of the architecture of the hydrogen side system of the fuel cell of the present invention.
Fig. 2 shows a side view of the ejector (without temperature control function).
Fig. 3 shows a cross-sectional view of the ejector (without temperature control function).
Fig. 4 illustrates a side view of an injector embodiment incorporating temperature control functionality in accordance with a preferred embodiment of the present invention.
Fig. 5 illustrates a cross-sectional view of an embodiment of an eductor incorporating temperature control functionality in accordance with a preferred embodiment of the present invention.
Fig. 6 illustrates a side view of an eductor embodiment incorporating temperature control functionality in accordance with a preferred embodiment of the present invention.
FIG. 7 illustrates a two-sectional view of an embodiment of an eductor incorporating temperature control functionality in accordance with a preferred embodiment of the present invention
Wherein the figures include the following reference numerals:
1. hydrogen storage means (hydrogen bottle); 2. a pressure reducing valve; 3. a hydrogen control valve (hydrogen injection); 4. a hydrogen control valve (bypass); 5. a galvanic pile; 6. a water diversion device; 7. a check valve; 8. a tail discharge valve; 9. an ejector; 9a, a jet inlet; 9b, a drainage inlet, 9c, an ejector outlet, 9d and a heating unit; 9e, a heat conducting layer; 9f, sealing layer; 9g, heating a wiring port; 9h, a temperature sensor; 9i, a sensing wiring port; 9A, an ejector end cover; 9B, an ejector main body; i, a reflux cavity; II, a fresh hydrogen cavity; III, a mixing cavity; IV, expanding the pressure cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates 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 unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those 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 invention is further described below with reference to fig. 1 to 7:
in order to solve the above problem, the present application provides an ejector with an integrated temperature control function and a hydrogen side system architecture of a fuel cell, including: the gas inlet part, the temperature control part and the part of giving vent to anger, the one end of the part of admitting air is connected with the one end of temperature control part, and the other end of temperature control part is connected with the one end of the part of giving vent to anger, and the temperature control part includes drainage entry 9b, efflux entry 9a, backward flow chamber I, fresh hydrogen gas chamber II and mixes the chamber III, is provided with heating module between backward flow chamber I and the fresh hydrogen gas chamber II. An annular heating unit 9d is arranged in the throat wall of the ejector, and the heating unit can adopt structures such as a ceramic electric heating pipe and an electric heating ring according to the structural space. And the heat conducting layers 9e are arranged on two sides of the heating unit, so that the contact thermal resistance can be reduced, and the heat is uniformly conducted. And a temperature sensor 9h is arranged near the heating unit and can monitor the temperature of the measuring point. The top of the heating unit 9d is provided with a sealing layer 9f which is isolated and sealed with the gas in the cavity to avoid the leakage of the hydrogen in the cavity
According to a preferred embodiment of the present invention, the heating module includes a heating unit 9d, a heat conductive layer 9e, a sealing layer 9f, and a temperature sensor 9 h.
And setting the target temperature according to the environmental conditions and the requirements of the humidity of the galvanic pile. Through temperature feedback of the measuring point, when the temperature of the measuring point is lower than a target temperature low value, a certain heating current is provided for heating; and when the temperature of the measuring point is higher than the target temperature high value, the current of the heating unit is cut off.
An electric control heating unit is arranged in the throat wall of the ejector, the heating unit and the heat conduction layer are in contact heat exchange to enable the throat wall surface to be heated, and the heated throat wall surface is used for heating the fresh hydrogen cavity and the reflux cavity simultaneously to improve the temperature of gas entering the galvanic pile. In order to reduce the contact thermal resistance, the ejector 9 needs to be made of aluminum alloy or copper alloy with good thermal conductivity.
According to a preferred embodiment of the invention, one end of the fresh hydrogen cavity is provided with a drainage inlet 9b, the other end of the fresh hydrogen cavity II is connected with one end of the mixing cavity III, and the other end of the mixing cavity III is connected with the diffusion cavity IV.
According to a preferred embodiment of the invention, the return chamber I is connected to both the fresh hydrogen chamber II and the mixing chamber III.
According to a preferred embodiment of the invention, the reflux cavity I is provided with a drainage inlet 9 b.
According to a preferred embodiment of the invention, the end of the temperature-controlled section remote from the mixing chamber III is provided with a temperature sensor 9 h.
According to a preferred embodiment of the invention, one end of the temperature control part far away from the mixing cavity III is provided with a temperature sensor 9h, and the top end of the temperature sensor 9h is provided with a heating module.
According to a preferred embodiment of the present invention, a sensor wiring port 9i is provided at an end of the temperature sensor 9h remote from the heating module. This scheme is shown in fig. 7: the groove is arranged on the outer side of the end cover of the ejector, and is not communicated with gas in the cavity, so that the leakage risk is avoided. A heating unit, a heat conduction layer and a temperature sensor are arranged in the wall of the throat opening of the ejector, the temperature control function of the ejector is realized, and the gap of the groove is sealed after arrangement.
According to a preferred embodiment of the invention, a fuel cell hydrogen side system architecture comprises the ejector with integrated temperature control function according to various embodiments, a hydrogen backflow is driven by the ejector 9, a jet inlet 9a supplies fresh hydrogen, negative pressure is generated by high-speed flow at the nozzle, hydrogen (containing water vapor and liquid water) which is not consumed by the electric pile is sucked from the return inlet 9b, after being mixed in the mixing cavity III, the pressure is recovered through the pressure expansion cavity IV and is conveyed to the galvanic pile 6 through the outlet 9c of the ejector, the specific structure is shown in figure 1, the hydrogen reflux is driven by the ejector 9, the jet inlet 9a supplies fresh hydrogen, high-speed flow at the nozzle generates negative pressure, hydrogen (containing water vapor and liquid water) which is not consumed by the electric pile is sucked from the return inlet 9b, after being mixed in the mixing cavity III, the pressure is recovered through the diffusion cavity IV, and the mixed gas is conveyed to the galvanic pile 6 through the ejector outlet 9 c. .
The ejector integrating the temperature control function and the hydrogen side system architecture of the fuel cell solve the problems that the existing ejector product has no temperature control function, is easy to freeze in the cold start process, and the system performance is abnormal due to the fact that the pile hydrogen pile entering humidity is difficult to control, and have the advantages of being capable of monitoring and controlling the temperature in real time, not easy to freeze, being properly controllable in the pile entering process and the like.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these directional terms do not indicate and imply that the device or element being referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides an integrated control by temperature change function's ejector which characterized in that includes: the temperature control device comprises an air inlet part, a temperature control part and an air outlet part, wherein one end of the air inlet part is connected with one end of the temperature control part, the other end of the temperature control part is connected with one end of the air outlet part, the temperature control part comprises a flow introduction port, a jet flow inlet, a backflow cavity, a fresh hydrogen cavity and a mixing cavity, and a heating module is arranged between the backflow cavity and the fresh hydrogen cavity.
2. The integrated temperature control function injector of claim 1, wherein the heating module comprises a heating unit, a heat conductive layer, a sealing layer, and a temperature sensor.
3. The ejector integrating the temperature control function as claimed in claim 1, wherein the drainage inlet is disposed at one end of the fresh hydrogen chamber, the other end of the fresh hydrogen chamber is connected with one end of the mixing chamber, and the other end of the mixing chamber is connected with a diffusion chamber.
4. The ejector with integrated temperature control function as claimed in claim 1, wherein the backflow cavity is connected to both the fresh hydrogen cavity and the mixing cavity.
5. The ejector with integrated temperature control function as claimed in claim 1, wherein the drainage inlet is disposed on the backflow cavity.
6. The injector with integrated temperature control function as claimed in claim 1, wherein a temperature sensor is disposed at an end of the temperature control part away from the mixing chamber.
7. The injector with integrated temperature control function as claimed in claim 1, wherein a temperature sensor is disposed at an end of the temperature control part away from the mixing chamber, and the heating module is disposed at a top end of the temperature sensor.
8. The injector as claimed in claim 7, wherein the temperature sensor is provided with a sensor wiring port at an end thereof remote from the heating module.
9. A fuel cell hydrogen side system architecture, characterized in that it comprises an injector with integrated temperature control function according to any one of claims 1 to 8.
CN202010563245.0A 2020-06-19 2020-06-19 Ejector integrated with temperature control function and hydrogen side system architecture of fuel cell Pending CN113823814A (en)

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CN202010563245.0A CN113823814A (en) 2020-06-19 2020-06-19 Ejector integrated with temperature control function and hydrogen side system architecture of fuel cell

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114439782A (en) * 2022-04-07 2022-05-06 北京亿华通科技股份有限公司 Hydrogen ejector for fuel cell
CN114458640A (en) * 2022-04-12 2022-05-10 北京亿华通科技股份有限公司 Fuel cell injector with ice protection adjustable working nozzle
CN114483670A (en) * 2022-04-06 2022-05-13 北京亿华通科技股份有限公司 Ejector high-pressure nozzle for fuel cell and hydrogen ejector
CN114497635A (en) * 2022-04-15 2022-05-13 北京亿华通科技股份有限公司 Anti-icing hydrogen ejector
CN114899451A (en) * 2022-05-05 2022-08-12 烟台东德实业有限公司 Cyclone water separator and ejector integrated hydrogen circulation system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114483670A (en) * 2022-04-06 2022-05-13 北京亿华通科技股份有限公司 Ejector high-pressure nozzle for fuel cell and hydrogen ejector
CN114439782A (en) * 2022-04-07 2022-05-06 北京亿华通科技股份有限公司 Hydrogen ejector for fuel cell
CN114458640A (en) * 2022-04-12 2022-05-10 北京亿华通科技股份有限公司 Fuel cell injector with ice protection adjustable working nozzle
CN114497635A (en) * 2022-04-15 2022-05-13 北京亿华通科技股份有限公司 Anti-icing hydrogen ejector
CN114899451A (en) * 2022-05-05 2022-08-12 烟台东德实业有限公司 Cyclone water separator and ejector integrated hydrogen circulation system
CN114899451B (en) * 2022-05-05 2023-03-31 烟台东德实业有限公司 Cyclone water separator and ejector integrated hydrogen circulation system

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