CN106532083B - Fuel cell connection module with water-containing thermal management structure design - Google Patents
Fuel cell connection module with water-containing thermal management structure design Download PDFInfo
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- CN106532083B CN106532083B CN201611161410.XA CN201611161410A CN106532083B CN 106532083 B CN106532083 B CN 106532083B CN 201611161410 A CN201611161410 A CN 201611161410A CN 106532083 B CN106532083 B CN 106532083B
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- intercooler
- preheater
- fuel cell
- module
- hydrogen
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Classifications
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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
-
- 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
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
-
- 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
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
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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 discloses a fuel cell connection module with a water-containing thermal management structure design, wherein a fluid distribution hole and a water thermal management component are arranged on the fuel cell connection module; namely, the intercooler and the preheater are provided with fins in the air cavity of the intercooler and the lamination in the hydrogen cavity of the preheater to increase the heat exchange area and enhance the heat exchange effect because the heat exchange coefficient of the cooling liquid is higher than that of air and hydrogen. Compared with the traditional fuel cell system, the structure of the invention does not need to divide the branch from the cooling circulation path for intercooling and preheating; thereby further reducing the number of functional parts, reducing the consumption of the heat transfer medium coolant, reducing the volume and weight occupied by the parts and reducing the energy consumption of the system. Effectively integrates resources and reduces heat loss and fluid resistance loss caused by the auxiliary pipelines. And also increases the tolerance of the fuel cell system to severe dynamic changes.
Description
Technical Field
The present invention relates to the field of fuel cells, and more particularly, to a fuel cell connection module with an aqueous thermal management structure design.
Background
In the face of energy bottlenecks, the development of new energy automobiles is a trend. In order to protect the environment and reduce the atmospheric pollution in cities, devices powered by PEMFC (proton exchange membrane fuel cells) are receiving increasing attention, which can achieve a true "zero" emission when PEMFC is fuelled with pure hydrogen. At present, PEMFCs are applied to the fields of traffic, communication and the like. The cathode side is increased along with the operation pressure, and the gas temperature is greatly increased and even reaches more than 100 ℃ during gas delivery and compression, so that the air in the low-temperature proton exchange membrane fuel cell needs to be pre-cooled and is provided with an intercooler; the hydrogen at the anode side is conveyed to the PEMFC from the hydrogen storage tank in a decompression way, the temperature is low, frost can be formed even on a pipeline, most of the design can preheat the hydrogen, and a preheater is arranged; finally, the input fluid characteristics of the fuel cell stack are basically consistent, so that the service life of the low-temperature proton exchange membrane fuel cell is prolonged. The intercooler and the pre-cooler are relatively mature products in industry, in the new search, the intercooler and the pre-cooler are mostly arranged independently in a fuel cell system, and the combination of the intercooler and the pre-cooler into one device is also introduced (patent number: CN104201404B, CN 103474686B), but the new structure design of the intercooler and the pre-cooler on a fuel cell connection module is not achieved.
Disclosure of Invention
In order to solve the above technical problems, the present invention performs module integration processing on a fuel cell to solve the technical problems of large fuel cell occupation space, poor expansibility and portability, and the like, and the modularized fuel cell system comprises: the pile module assembly is formed by sequentially combining and stacking a rear end (blind end) end plate, an insulating plate, a current collecting plate, a battery pack (comprising a multi-layer membrane electrode and a bipolar plate) and a front end plate according to requirements; the connecting module is arranged at one side of the pile module assembly; the auxiliary machine module assembly is arranged on the other side of the connecting module opposite to the pile module assembly; the electric module assembly is arranged on the other side of the electric pile module assembly opposite to the connecting module; the outer packaging assembly comprises a pile module packaging box and an auxiliary machine module packaging box, wherein the pile module packaging box and the auxiliary machine module packaging box are fixedly connected through the connecting module and are respectively used for accommodating the pile module assembly, the electric module assembly and an accommodating space of the auxiliary machine module assembly; the electric pile module assembly, the auxiliary machine module assembly and the electric module assembly are packaged through the outer packaging assembly to form an independent fuel cell system with a preset sealing grade; a system control unit (ECU) is fixed to the side of the auxiliary machine packaging box which is closely spaced from the system line.
Wherein the connecting module has the functions of medium flow channel conversion, distribution capacity and the like, can provide reliable connection and fixation for a plurality of related elements,
the invention further combines the needs of the PEMFC for the vehicle, and couples the intercooler and the preheater on the fuel cell connection module, namely the fuel cell connection module with the water-containing thermal management structure design, which not only meets the mechanical strength, but also respectively connects the electric pile module assembly and the auxiliary machine module assembly, and simultaneously adds the functions of intercooling and preheating to the newly added fluid distribution function. The number of the functional parts is further reduced, the consumption of the heat transfer medium coolant is reduced, the volume and weight occupied by the parts are reduced, and the energy consumption of the system is reduced.
Specifically, the fuel cell connection module includes: a main board of the connection module, and an intercooler and a preheater (namely, a water heat management component, namely, an air intercooler and a hydrogen preheater) arranged on the main board; the intercooler and the preheater are arranged on one side close to the auxiliary machine module assembly, wherein:
the intercooler
The electric pile module comprises an intercooler sealing end cover, an intercooler air inlet arranged on the intercooler sealing end cover, and an intercooler air outlet arranged on a connecting module main board, wherein the intercooler air outlet is connected with an air inlet of the electric pile module assembly;
the intercooler cooling device further comprises an intercooler coolant inlet arranged on the intercooler sealing end cover; an intercooler coolant outlet arranged on the connecting module main board and connected with the coolant inlet of the electric pile module assembly;
the pipelines corresponding to the intercooler coolant inlet and the intercooler coolant outlet are used for conveying intercooler coolant;
the space surrounded by the intercooler air inlet, the intercooler air outlet and the intercooler sealing end cover is an intercooler air cavity and is an air conveying channel, heat exchange plates are arranged in the channel, and the heat exchange plates are of a fin type or lamination type structure;
the air intercooler is integrated on the fuel cell connection module, cold fluid of the air intercooler is cooling fluid entering the galvanic pile module assembly, and hot fluid is air at the outlet of the air compressor.
The air intercooler is designed to preferentially heat fluid volume.
The preheater
The hydrogen inlet of the preheater is arranged on the sealing end cover of the preheater, and the hydrogen outlet of the preheater is arranged on the main board of the connecting module and is connected with the hydrogen inlet of the galvanic pile module assembly;
the system also comprises a pre-heater coolant inlet arranged on the connecting module main board, wherein the pre-heater coolant inlet is connected with a cooling outlet of the pile module assembly; and a preheater coolant outlet disposed on the preheater sealing end cap;
the space enclosed by the hydrogen inlet of the preheater, the hydrogen outlet of the preheater and the sealing end cover of the preheater is a hydrogen cavity of the preheater and is a hydrogen conveying channel, heat exchange plates are arranged in the channel, and the heat exchange plates are of a fin type or lamination type structure;
the reducing pipeline enclosed between the inlet of the cooling agent of the preheater and the outlet of the cooling agent of the preheater is a conveying channel of the cooling agent of the preheater; the pipeline shape and position of the conveying channel need to meet the requirement that the positions of the conveying channel cannot interfere with other pipelines, and in the embodiment of the invention, the design of the reducing pipeline is adopted, and the purposes of setting the reducing pipeline and designing the inlet and outlet of the cooling agent of the preheater as eccentric circles are also the same.
The outer wall of the conveying channel of the preheater coolant is also provided with a component for fixing the heat exchange lamination;
in order to ensure the tightness of the inner spaces of the intercooler and the preheater, sealing glue lines are respectively arranged at the joints of the sealing end covers of the preheater and the intercooler and the connecting module main board.
Further, for the technical scheme, the main board material of the fuel cell connection module is a material with good heat conduction; the main body material of the fuel cell connection module selected in the embodiment of the invention is aluminum.
The hydrogen preheater is integrated on the fuel cell connection module, cold fluid of the hydrogen preheater is cold hydrogen of the in-cell stack module assembly, and hot fluid of the hydrogen preheater is cooling fluid of the out-cell stack module assembly;
the hydrogen preheater is designed to preferentially cool the fluid volume.
The invention has the innovative characteristics that:
1. according to the invention, the intercooler is organically combined with the preheater, and compared with a traditional fuel cell system, the intercooler and the preheater do not need to be subjected to intercooling and preheating by a branch circuit of a cooling circulation path; thereby further reducing the number of functional parts, reducing the consumption of the heat transfer medium coolant, reducing the volume and weight occupied by the parts and reducing the energy consumption of the system.
2. The invention further adds the function of the fuel cell connection module, reduces the number of functional parts, effectively integrates resources, and reduces heat loss and fluid resistance loss caused by the auxiliary pipeline.
3. In the process of intercooling heat exchange and preheating heat exchange, the invention also takes into account the design of the buffer cavity (namely the heat exchange cavity which has larger volume than the original pipeline and can play a role in buffering) of the air and the hydrogen entering the galvanic pile module assembly, and increases the tolerance of the severe dynamic change of the fuel cell system.
Drawings
FIG. 1 is an assembled schematic view of a prior art pile module assembly, auxiliary machine module assembly and connection module;
FIG. 2 is an elevation view of a connection module without the intercooler seal end cap and the preheater seal end cap removed;
FIG. 3 is an elevation view of a connection module with intercooler and preheater seal caps removed;
wherein: i: pile module assembly, II: connection module, III: an auxiliary machine module assembly; 1: a main board connected with the module II; 101: charge air cooler air inlet, 102: outlet intercooler air outlet, 201: entering the preheater hydrogen inlet, 202: exiting the preheater hydrogen outlet, 301: into the preheater coolant inlet, 302: exiting the preheater coolant outlet, 401: charge air cooler coolant inlet, 402: outlet intercooler coolant outlet, 501: is a heat exchange lamination; 502: is a heat exchange fin; 6: a sealant line; 7: fastening the sealing screw hole; 801: a preheater sealing end cover; 802: the intercooler seals the end cover.
Detailed Description
The following non-limiting examples will enable those of ordinary skill in the art to more fully understand the invention and are not intended to limit the invention in any way. It is intended that all those skilled in the art can make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof within the technical scope of the present invention disclosed in the present invention.
Example 1
Take a 25kW engine system as an example. The fuel cell connection module II is characterized in that one side of the fuel cell connection module II is connected with the electric pile module I, one side of the fuel cell connection module II is connected with the auxiliary machine module III, the fuel cell connection module II is provided with a fluid distribution hole and simultaneously contains a water heat management component, the main material of the fuel cell connection module II is aluminum, as shown in the attached figures 2 and 3, the structures of an intercooler and a preheater on the fuel cell connection module II are mainly marked, and as the heat exchange coefficient of cooling liquid is higher than that of air and hydrogen, fins are designed in an air cavity of the intercooler, and a lamination is designed in a hydrogen cavity of the preheater to enlarge the heat exchange area and enhance the heat exchange effect. Wherein:
namely, the fuel cell connection module II with the water-containing thermal management structure design of the invention not only meets the mechanical strength, but also is respectively connected with the electric pile module assembly I and the auxiliary machine module assembly III, and the newly added fluid distribution function is added with the functions of intercooling and preheating. Specifically, the fuel cell connection module II includes: a main board 1 of the connection module II and an intercooler and a preheater arranged on the main board; the intercooler and the preheater are arranged on one side close to the auxiliary machine module assembly, wherein:
the intercooler
The electric pile module comprises an intercooler sealing end cover 802, an intercooler air inlet 101 arranged on the intercooler sealing end cover 802, and an intercooler air outlet 102 arranged on a connecting module II main board 1, wherein the intercooler air outlet 102 is connected with an air inlet of the electric pile module assembly I;
further comprising an intercooler coolant inlet 401 disposed on the intercooler seal end cap 802; an intercooler coolant outlet 402 disposed on the connection module motherboard, the intercooler coolant outlet 402 being connected to the stack module assembly I coolant inlet;
the pipelines corresponding to the intercooler coolant inlet 401 and the intercooler coolant outlet 402 are used for conveying intercooler coolant;
the space surrounded by the intercooler air inlet 101, the intercooler air outlet 102 and the intercooler sealing end cover 802 is an intercooler air cavity, and is an air conveying channel, and heat exchange fins 502 are arranged in the channel;
the air intercooler is integrated on the fuel cell connection module II, cold fluid of the air intercooler is cooling fluid entering the electric pile module assembly, and hot fluid is air at the outlet of the air compressor.
The air intercooler is designed to preferentially heat fluid volume.
The preheater
The hydrogen inlet and outlet device comprises a preheater sealing end cover 801, a preheater hydrogen inlet 201 arranged on the preheater sealing end cover 801, and a preheater hydrogen outlet 202 arranged on a connecting module II main board 1, wherein the preheater hydrogen outlet 202 is connected with a hydrogen inlet of a galvanic pile module assembly II;
the system further comprises a pre-heater coolant inlet 301 arranged on the connection module II main board 1, wherein the pre-heater coolant inlet 301 is connected with a cooling outlet of the pile module assembly; and a preheater coolant outlet 302 provided on the preheater seal end cap 801;
the space enclosed by the hydrogen inlet 201 of the preheater, the hydrogen outlet 202 of the preheater and the sealing end cover 801 of the preheater is a hydrogen cavity of the preheater and is a hydrogen conveying channel, and heat exchange laminations 501 are arranged in the channel;
the reducing pipeline enclosed between the inlet 301 and the outlet 302 is a conveying channel of the preheater coolant, and the inlet 301 and the outlet 302 are eccentric circles; the shape and position of the pipeline of the conveying channel are satisfied that the position of the conveying channel does not interfere with other pipelines.
The outer wall of the delivery channel of the preheater coolant is also provided with a component for fixing the heat exchange lamination 501;
in order to ensure tightness of the inner spaces of the intercooler and the preheater, sealant lines 6 are also respectively arranged at the joints of the connecting module main board 1 and the intercooler sealing end covers 801 and 802 along the preheater.
The hydrogen preheater is integrated on the fuel cell connection module, the cold fluid of the hydrogen preheater is cold hydrogen of the in-cell stack module assembly I, and the hot fluid is cooling fluid of the out-cell stack module assembly I;
the hydrogen preheater is designed to preferentially cool the fluid volume.
1. Comparison of intercooling and preheating effects: compared with the traditional 25kW fuel cell system, the structure of the invention has basically consistent intercooling and preheating effects, and intercooling and preheating are not needed to be carried out by branching a branch from a cooling circulation path;
2. comparison by weight: the traditional 25kW fuel cell system fuel cell connection module weighs 5kg, the air intercooler weighs 3.5kg, and the hydrogen preheater weighs 1kg; a total of 9.5kg (without considering the connecting line weight), whereas the 25kW fuel cell system fuel cell connection module of this example weighs 8kg;
3. comparison in terms of volume: the total volume of the traditional fuel cell connection module and the hydrogen preheater is the same as that of the fuel cell connection module of the embodiment, so that the volume of the air intercooler and the connection pipeline is saved in the embodiment.
Claims (8)
1. The utility model provides a fuel cell connection module of hydrous thermal management structural design which connects pile module assembly and auxiliary engine module assembly respectively, its characterized in that: the fuel cell connection module includes: the main board of the connection module and the intercooler and the preheater arranged on the main board, wherein the intercooler and the preheater are arranged on one side close to the auxiliary machine module assembly, and the auxiliary machine module assembly comprises:
the intercooler
The electric pile module comprises an intercooler sealing end cover, an intercooler air inlet arranged on the intercooler sealing end cover, and an intercooler air outlet arranged on a connecting module main board, wherein the intercooler air outlet is connected with an air inlet of the electric pile module assembly;
the intercooler cooling device further comprises an intercooler coolant inlet arranged on the intercooler sealing end cover; an intercooler coolant outlet arranged on the connecting module main board and connected with the coolant inlet of the electric pile module assembly;
the pipelines corresponding to the intercooler coolant inlet and the intercooler coolant outlet are used for conveying intercooler coolant;
the space surrounded by the intercooler air inlet, the intercooler air outlet and the intercooler sealing end cover is an intercooler air cavity, and heat exchange plates are arranged in the intercooler air cavity;
the preheater
The hydrogen inlet of the preheater is arranged on the sealing end cover of the preheater, and the hydrogen outlet of the preheater is arranged on the main board of the connecting module and is connected with the hydrogen inlet of the galvanic pile module assembly;
the system also comprises a pre-heater coolant inlet arranged on the connecting module main board, wherein the pre-heater coolant inlet is connected with a cooling outlet of the pile module assembly; and a preheater coolant outlet disposed on the preheater sealing end cap;
the space enclosed by the hydrogen inlet of the preheater, the hydrogen outlet of the preheater and the sealing end cover of the preheater is a hydrogen cavity of the preheater, and heat exchange plates are arranged in the hydrogen cavity of the preheater.
2. The aqueous thermal management structured fuel cell connection module of claim 1, wherein: the main board material of the fuel cell connection module is a material with good heat conduction.
3. The aqueous thermal management structured fuel cell connection module of claim 1, wherein: the air intercooler is integrated on the fuel cell connection module, cold fluid of the air intercooler is cooling fluid entering the galvanic pile module assembly, and hot fluid is air at the outlet of the air compressor.
4. The aqueous thermal management structured fuel cell connection module of claim 1, wherein: the hydrogen preheater is integrated on the fuel cell connection module, the cold fluid of the hydrogen preheater is cold hydrogen of the in-cell stack module assembly, and the hot fluid is cooling fluid of the out-cell stack module assembly.
5. The aqueous thermal management structured fuel cell connection module of claim 1, wherein: the air intercooler is designed to preferentially heat the volume of the fluid; the hydrogen preheater is designed to preferentially cool the fluid volume.
6. The aqueous thermal management structured fuel cell connection module of claim 1, wherein: the outer wall of the conveying channel of the preheater coolant is also provided with a component for fixing the heat exchange lamination.
7. The aqueous thermal management structured fuel cell connection module of claim 1, wherein: and sealing glue lines are respectively arranged at the joints of the preheater sealing end cover or the intercooler sealing end cover and the connecting module main board.
8. The aqueous thermal management structured fuel cell connection module of claim 1, wherein: the heat exchange plates are fin type or lamination type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611161410.XA CN106532083B (en) | 2016-12-15 | 2016-12-15 | Fuel cell connection module with water-containing thermal management structure design |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611161410.XA CN106532083B (en) | 2016-12-15 | 2016-12-15 | Fuel cell connection module with water-containing thermal management structure design |
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| CN106532083A CN106532083A (en) | 2017-03-22 |
| CN106532083B true CN106532083B (en) | 2023-07-28 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978822B (en) * | 2017-12-20 | 2023-09-22 | 新源动力股份有限公司 | Fuel cell system structure with hydrogen circulation and heat exchange functions |
| CN110233278A (en) * | 2019-07-17 | 2019-09-13 | 新源动力股份有限公司 | A kind of galvanic pile module of fuel cell fluid-dispensing structure |
| CN112825361A (en) * | 2019-11-21 | 2021-05-21 | 上海德威明兴新能源科技有限公司 | Water/heat balance method for fuel cell |
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| CN106532083A (en) | 2017-03-22 |
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