CN113506892A - Double-cooling intercooler for fuel cell - Google Patents
Double-cooling intercooler for fuel cell Download PDFInfo
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- CN113506892A CN113506892A CN202110855100.2A CN202110855100A CN113506892A CN 113506892 A CN113506892 A CN 113506892A CN 202110855100 A CN202110855100 A CN 202110855100A CN 113506892 A CN113506892 A CN 113506892A
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- cooling
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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
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of 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
- H01M8/04007—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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- 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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- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a double-cooling intercooler for a fuel cell, which at least comprises flow guide end covers, cooling cavities and radiating pipes, wherein the flow guide end covers are arranged at two sides of the intercooler; the cooling tube is located inside the intercooler, and the cooling tube runs through the air cooling chamber and the liquid cooling chamber, so that the cooling tube and the flow guide end cover form a flow field space inside the intercooler. The energy consumed by liquid cooling can be greatly reduced by the two cooling cavities of the air cooling cavity and the liquid cooling cavity and the pre-cooling of the high-temperature gas by using the waste gas of the humidifier, the parasitic power generated by air cooling from the air compressor is reduced, and the overall efficiency of the fuel cell system is improved; the load of a heat management system and the requirements of parts are reduced, the cost is reduced, and the system stability is also improved; the temperature of the waste gas discharged by the intercooler is greatly improved, is greatly higher than the system operation temperature, and is favorable for recycling the waste gas energy.
Description
Technical Field
The invention relates to the field of fuel cell systems, in particular to a double-cooling intercooler for a fuel cell.
Background
As a clean, environment-friendly and efficient energy conversion device, the fuel cell is more and more emphasized by various countries along with the gradual maturity of the fuel cell technology, and particularly, the fuel cell is rapidly developed in China, and the application range of the fuel cell is wider and wider. Proton Exchange Membrane Fuel Cells (PEMFC) have the advantages of environmental protection, high efficiency, high starting speed, high power density and the like, are one of the main competitors of future traffic power systems, and the fuel cells can obtain good working performance under the condition of proper humidity. Both fuel cell air and hydrogen feed gases need to be humidified to prevent dehydration of the proton exchange membrane from degrading cell performance and operating life, allowing efficient operation of the fuel cell. In many humidification technical routes, wet waste gas put by the membrane humidifier through the PEMFC is recycled for humidifying and heating reactants, and the membrane humidifier becomes a mainstream external humidification technical scheme at present due to the advantages of stable humidification, strong controllability, large humidification amount, no extra power consumption and the like. On the other hand, to create favorable stack operating conditions, air is typically pressurized, which is typically accompanied by a temperature increase via an air compressor, and is therefore typically cooled by an intercooler prior to entering the humidifier.
The use method of the existing intercooler comprises the following steps: the high-temperature compressed dry air from the air compressor is cooled by the intercooler, and then enters the humidifier for humidification and then enters the electric pile. There are a number of problems with this approach, such as:
(1) the existing intercooler is usually independent liquid cooling or air cooling, but no matter the cooling medium of the liquid cooling or the air cooling needs to be provided with power added from a system cooling water path, the added power needs to be a large amount of system power consumed by an electric water pump or an electric fan;
(2) the cooling technical route of the traditional use method is that dry gas is cooled by using cooling liquid, and the cooling liquid is cooled by a finished automobile radiator, so that the finished automobile needs to reserve the heat dissipation requirement of an intercooler, a large radiator and a high-power water pump are selected, and the heat dissipation space and the installation difficulty of the finished automobile are increased;
(3) the exhaust gas of the conventional fuel cell system is discharged from the wet outlet of the humidifier, and is usually close to the system operation temperature, and the temperature is usually low, which is not favorable for energy recovery.
Accordingly, those skilled in the art have endeavored to develop a dual cooling intercooler for a fuel cell to solve the above problems.
Disclosure of Invention
In view of the above-mentioned defects in the prior art, the present invention provides a dual-cooling intercooler for a fuel cell, which is provided with dual cooling cavities to pre-cool high-temperature dry air, thereby solving the problems in the prior art.
In order to solve the above problems, the present invention provides a dual-cooling intercooler for a fuel cell, at least comprising a flow guide end cap, a cooling cavity and a heat dissipation pipe, wherein the flow guide end cap is arranged at two sides of the intercooler for respectively performing high temperature gas inlet and cooled gas exhaust; the middle of the flow guide end covers on the two sides is provided with the cooling cavity in a communicating mode, and the cooling cavity at least comprises two cooling spaces of an air cooling cavity and a liquid cooling cavity which are arranged adjacently; the radiating pipe is located inside the intercooler, and the radiating pipe penetrates through the air cooling cavity and the liquid cooling cavity, so that a flow field space is formed between the radiating pipe and the flow guide end cover inside the intercooler, and high-temperature gas is cooled.
Further, a gas-liquid inlet and outlet is formed in the flow guide end cover, a high-temperature gas inlet is formed in one end of the flow guide end cover on one side and used for being connected with an external air compressor, so that high-temperature gas from the air compressor enters the intercooler to be cooled, and the other end of the flow guide end cover is connected with the cooling cavity to guide the high-temperature gas into the cooling cavity; and one end of the other side of the side flow end cover is communicated with the cooling cavity, and the other end of the side flow end cover is provided with a cooled gas outlet, so that the cooled gas in the cooling cavity is guided out to other equipment.
Further, the two cooling cavities in the cooling cavity are arranged at the following positions: the gas cooling cavity is located at the upper stream of the liquid cooling cavity, and the high-temperature gas introduced by the flow guide end cover firstly passes through the gas cooling cavity to be pre-cooled, then passes through the liquid cooling cavity to be supplemented and cooled, and finally is cooled to a proper temperature.
Furthermore, the cooling of air cooling chamber and liquid cooling chamber can adopt single the air cooling chamber cools down, works as when the cooling of air cooling chamber can not reach the fuel cell system requirement, through the supplementary cooling of liquid cooling chamber.
Further, flow field spaces inside the intercooler are flow field spaces for forming cooled gas in the diversion end cover and the radiating pipe respectively; the air cooling cavity and the outer side of the radiating pipe form a cooling air flow field space; the liquid cooling cavity and the outer side of the radiating pipe form a cooling liquid flow field space.
Furthermore, the medium in the cooling cavity comes from the inside of the fuel cell system, wherein the cooling medium in the air cooling cavity is gas, and waste gas discharged by a humidifier in the fuel cell is adopted; the cooling medium of the liquid cooling cavity is cooling liquid and comes from a system cooling circulation water path.
Furthermore, two ends of the gas cooling cavity and the liquid cooling cavity in the cooling cavity are respectively provided with a cooling medium inlet and a cooling medium outlet.
Further, the cooling cavity structure can adopt a tube array type or a flat tube fin type or a capillary flow channel type, and the radiating tube is arranged inside the intercooler based on the structure of the cooling cavity.
The double-cooling intercooler for the fuel cell provided by the invention has the following technical effects:
(1) according to the technical scheme, the cooling cavity is set into the air cooling cavity and the liquid cooling cavity, and the liquid cooling is reduced or even replaced by pre-cooling the high-temperature gas through the waste gas of the humidifier, so that the energy required by the liquid cooling can be greatly reduced, the parasitic power generated by air cooling from the air compressor is reduced, and the efficiency of the fuel cell system is improved;
(2) in the technical scheme, the temperature of the waste gas discharged by the intercooler is greatly increased, the system operation temperature is greatly increased, and the recovery of waste gas energy is facilitated;
(3) the technical scheme reduces the load of the heat management system and the requirements of parts, reduces the cost and also improves the stability of the system.
Drawings
The conception, the specific structure and the technical effects of the present invention will be further described in conjunction with the accompanying drawings so as to fully understand the objects, the features and the effects of the present invention:
FIG. 1 is a schematic diagram of a dual-cooling intercooler configuration in an embodiment of the present invention;
FIG. 2 is a schematic diagram of the shell and tube cooling chamber of FIG. 1;
FIG. 3 is a schematic structural view of the flat tube fin type cooling cavity in FIG. 2;
in the figure:
1. an intercooler; 10. a flow guide end cover; 100. a high temperature gas inlet; 101. cooling the gas to be discharged; 11. a cooling chamber; 12. a gas-cooled cavity; 120. a cooling gas inlet; 121. an exhaust gas outlet; 13. a liquid-cooled chamber; 130. a coolant inlet; 131. a coolant outlet; 14. a heat radiation pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solution of the present invention is described in detail below using examples.
As shown in fig. 1 and fig. 2-3, a dual-cooling intercooler 1 for a fuel cell at least includes a diversion end cap 10, a cooling cavity 11 and a heat dissipation pipe 14, wherein the diversion end cap 10 is disposed at two sides of the intercooler 1, and respectively performs high-temperature gas inlet and cooled gas outlet; the middle of the flow guide end covers 10 at the two sides is provided with a cooling cavity 11 in a communicating way, and the cooling cavity 11 at least comprises two cooling spaces of an air cooling cavity 12 and a liquid cooling cavity 13 which are arranged adjacently; the radiating pipe 14 is located inside the intercooler 1, and the radiating pipe 14 penetrates through the air cooling cavity 12 and the liquid cooling cavity 13, so that the radiating pipe 14 and the flow guide end cover 10 form a flow field space inside the intercooler 1 to complete cooling of high-temperature gas.
More specifically, a gas-liquid inlet and outlet is formed in the flow guide end cover 10, a high-temperature gas inlet 100 is formed in one end of the flow guide end cover 10 on one side and used for being connected with an external air compressor, so that high-temperature gas from the air compressor enters the intercooler 1 to be cooled, and the other end of the flow guide end cover is connected with the cooling cavity 11 to guide the high-temperature gas into the cooling cavity 11; one end of the other side of the side flow end cover 10 is communicated with the cooling cavity 11, and the other end of the side flow end cover is provided with a cooled gas outlet 101, so that gas cooled by the cooling cavity 11 is led out to other equipment.
The two cooling cavities 11 in the cooling cavity 11 are arranged at positions where the air cooling cavity 12 is located at the upstream of the liquid cooling cavity 13, that is, the introduced high-temperature gas of the flow guide end cover 10 is firstly pre-cooled by the air cooling cavity 12 of the cooling cavity 11, then is additionally cooled by the liquid cooling cavity 13 of the cooling cavity 11, and finally is cooled to a proper temperature.
The upper end and the lower end of the air cooling cavity 12 are respectively provided with a cooling gas inlet 120 and a waste gas outlet 121, and as the cooling medium of the air cooling cavity 12 is gas and waste gas discharged by a humidifier in a fuel cell is adopted, the cooling gas inlet 120 is communicated with the humidifier; the upper end and the lower end of the liquid cooling cavity 13 are respectively provided with a cooling liquid inlet 130 and a cooling liquid outlet 131, because the cooling medium of the liquid cooling cavity 13 is cooling liquid and comes from a cooling circulation water path of the fuel cell, the cooling liquid inlet 130 is communicated with the internal circulation water path of the system.
The air cooling cavity 12 and the liquid cooling cavity 13 can be cooled by adopting a single air cooling cavity 12, and when the temperature of the air cooling cavity 12 cannot meet the requirement of the fuel cell system, the liquid cooling cavity 13 is used for supplementing temperature reduction.
As shown in fig. 2-3, the cooling cavity 11 may be in a tubular structure, or a flat tube fin structure, or a capillary flow channel structure, and the heat dissipation pipe 14 is disposed inside the intercooler 1 based on the structure of the cooling cavity 11. The arrangement of the radiating pipe 14 enables a plurality of flow field spaces to be formed inside the intercooler 1, wherein the flow field spaces are respectively flow field spaces for forming cooled gas in the diversion end cover 10 and the radiating pipe 14; the air cooling cavity 12 and the outer side of the radiating pipe 14 form a cooling air flow field space; the liquid cooling chamber 13 and the outer side of the radiating pipe 14 form a cooling liquid flow field space, further enhancing the cooling effect. Through tests, for a 100kw fuel cell system, the heat load of the whole vehicle can be reduced by 5-10kw, which accounts for 10% of the heat load of the whole vehicle.
It should be added that, unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this invention belongs. The terms "connected" or "coupled" and the like as used in the description and claims of the present patent application are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "end", "side", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships are changed accordingly.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any uses or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the present invention is not limited to the structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. A double-cooling intercooler for a fuel cell is characterized by at least comprising a flow guide end cover, a cooling cavity and a radiating pipe, wherein the flow guide end cover is arranged on two sides of the intercooler and used for respectively carrying out high-temperature gas inlet and cooling and then discharging gas; the middle of the flow guide end covers on the two sides is provided with the cooling cavity in a communicating mode, and the cooling cavity at least comprises two cooling spaces of an air cooling cavity and a liquid cooling cavity which are arranged adjacently; the radiating pipe is located inside the intercooler, and the radiating pipe penetrates through the air cooling cavity and the liquid cooling cavity, so that a flow field space is formed between the radiating pipe and the flow guide end cover inside the intercooler, and high-temperature gas is cooled.
2. The dual-cooling intercooler for a fuel cell as claimed in claim 1, wherein the flow guide end cap is provided with a gas-liquid inlet and outlet, one end of the flow guide end cap is provided with a high temperature gas inlet for connecting an external air compressor so that high temperature gas from the air compressor enters the intercooler for cooling, and the other end of the flow guide end cap is connected with the cooling cavity so that high temperature gas is introduced into the cooling cavity; and one end of the other side of the side flow end cover is communicated with the cooling cavity, and the other end of the side flow end cover is provided with a cooled gas outlet, so that the cooled gas in the cooling cavity is guided out to other equipment.
3. The dual-cooling intercooler for a fuel cell according to claim 2, wherein two of the cooling chambers are provided at positions of: the gas cooling cavity is located at the upper stream of the liquid cooling cavity, and the high-temperature gas introduced by the flow guide end cover firstly passes through the gas cooling cavity to be pre-cooled, then passes through the liquid cooling cavity to be supplemented and cooled, and finally is cooled to a proper temperature.
4. The dual-cooling intercooler of claim 3, wherein the air-cooling chamber and the liquid-cooling chamber are cooled by a single air-cooling chamber, and when the air-cooling chamber is not cooled to meet the system requirement of the fuel cell, the liquid-cooling chamber is used for supplementary cooling.
5. The dual-cooling intercooler of claim 4, wherein the flow field space inside the intercooler is a flow field space for forming cooled gas in the diversion end cap and the heat dissipation pipe, respectively; the air cooling cavity and the outer side of the radiating pipe form a cooling air flow field space; the liquid cooling cavity and the outer side of the radiating pipe form a cooling liquid flow field space.
6. The dual cooling intercooler of claim 5, wherein the cooling medium in the cooling chamber is from inside the fuel cell system, wherein the cooling medium in the cooling chamber is gas, and the cooling medium is exhaust gas from a humidifier in the fuel cell; the cooling medium of the liquid cooling cavity is cooling liquid and comes from a system cooling circulation water path.
7. The dual-cooling intercooler for a fuel cell according to claim 6, wherein a cooling medium inlet and a cooling medium outlet are provided at both ends of the gas-cooling chamber and the liquid-cooling chamber in the cooling chamber, respectively.
8. The dual-cooling intercooler for a fuel cell as set forth in claim 7, wherein the cooling chamber structure may be a tube array type or a flat tube fin type or a capillary flow passage type, and the heat dissipating pipe is disposed inside the intercooler based on the cooling chamber structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110855100.2A CN113506892A (en) | 2021-07-26 | 2021-07-26 | Double-cooling intercooler for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110855100.2A CN113506892A (en) | 2021-07-26 | 2021-07-26 | Double-cooling intercooler for fuel cell |
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| CN113506892A true CN113506892A (en) | 2021-10-15 |
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| CN202110855100.2A Pending CN113506892A (en) | 2021-07-26 | 2021-07-26 | Double-cooling intercooler for fuel cell |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1745494A (en) * | 2003-01-31 | 2006-03-08 | 通用汽车公司 | Fuel cell system with regenerative heat exchanger |
| CN102163731A (en) * | 2010-02-19 | 2011-08-24 | 通用汽车环球科技运作有限责任公司 | Compressor system with a freewheeling expander |
| CN104247119A (en) * | 2012-02-27 | 2014-12-24 | 达纳加拿大公司 | Method and system for cooling charge air for a fuel cell, and three-fluid charge air cooler |
| CN215988855U (en) * | 2021-07-26 | 2022-03-08 | 天朤(江苏)氢能源科技有限公司 | Double-cooling intercooler for fuel cell |
-
2021
- 2021-07-26 CN CN202110855100.2A patent/CN113506892A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1745494A (en) * | 2003-01-31 | 2006-03-08 | 通用汽车公司 | Fuel cell system with regenerative heat exchanger |
| CN102163731A (en) * | 2010-02-19 | 2011-08-24 | 通用汽车环球科技运作有限责任公司 | Compressor system with a freewheeling expander |
| CN104247119A (en) * | 2012-02-27 | 2014-12-24 | 达纳加拿大公司 | Method and system for cooling charge air for a fuel cell, and three-fluid charge air cooler |
| CN215988855U (en) * | 2021-07-26 | 2022-03-08 | 天朤(江苏)氢能源科技有限公司 | Double-cooling intercooler for fuel cell |
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