CN108461777B - Heat treatment system for fuel cell stack - Google Patents
Heat treatment system for fuel cell stack Download PDFInfo
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- CN108461777B CN108461777B CN201810216165.0A CN201810216165A CN108461777B CN 108461777 B CN108461777 B CN 108461777B CN 201810216165 A CN201810216165 A CN 201810216165A CN 108461777 B CN108461777 B CN 108461777B
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- circulation loop
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- fuel cell
- pipeline
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- 239000000446 fuel Substances 0.000 title claims abstract description 87
- 238000010438 heat treatment Methods 0.000 title claims abstract description 32
- 230000017525 heat dissipation Effects 0.000 claims abstract description 61
- 239000000110 cooling liquid Substances 0.000 claims abstract description 17
- 239000002918 waste heat Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 4
- 230000002528 anti-freeze Effects 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 description 13
- 238000009434 installation Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a heat treatment system for a fuel cell stack, which comprises a first heat dissipation circulation loop, a second heat dissipation circulation loop and a third heat dissipation circulation loop, wherein the first heat dissipation circulation loop is communicated with the second heat dissipation circulation loop through a first heat exchanger, the second heat dissipation circulation loop is communicated with the third heat dissipation circulation loop through a second heat exchanger, and the first heat dissipation circulation loop is communicated with the fuel cell stack; cooling liquid is arranged in the first heat dissipation circulation loop and the second heat dissipation circulation loop, and is special antifreeze for the fuel cell stack and used for recovering waste heat generated by the fuel cell stack; the third heat dissipation circulation loop comprises a radiator which is a fan and is used for heating by utilizing waste heat recovered through the first heat dissipation circulation loop and the second heat dissipation circulation loop. The heat treatment system optimizes the cold start consumption and the cold start time, and greatly improves the utilization rate of heat energy generated during the operation of the fuel cell.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a heat treatment system for a fuel cell stack.
Background
The fuel cell engine is used as a novel green power energy source, and is widely applied to the field of automobiles due to the advantages of zero pollution, high efficiency, long endurance mileage and the like. In the operation process of the fuel cell engine, the fuel cell engine needs to be quickly connected and disconnected with an external waterway.
The fuel cell stack can generate a large amount of heat energy which accounts for about 50% of the chemical energy of the fuel in the operation process, and takes a fuel cell stack with the output of 100kW as an example, the fuel cell stack can generate about 100kW of heat, so that the temperature of the fuel cell stack is increased, the membranes can be dried at an excessively high temperature, the performance of the membranes is reduced, the service life of the membranes is shortened, and the performance and the service life of the fuel cell stack are further reduced; at the same time, electrical devices such as power management systems of fuel cells also generate a large amount of heat.
The prior art relates to heat treatment systems for fuel cell stacks, such as: patent number: 201010266526.6 provides a cooling system for a fuel cell vehicle comprising an integral radiator frame having stacked radiator and electric drive train radiator arranged in series on a single plane, which can be achieved by a relatively simple configuration and assembly process. Patent number: 200810113785.8 provides a heat pump air conditioning system utilizing the waste heat of a fuel cell engine, which can simultaneously meet the requirements of refrigeration and heating, reduce the consumption of the air conditioning system and improve the dynamic property and the economical efficiency of the vehicle.
The prior art researches find that the research on the fuel cell for the vehicle is mainly focused on how to realize effective cooling of the fuel cell stack, an efficient comprehensive heat treatment optimizing system is not formed, and meanwhile, heat generated by the fuel cell stack, tail gas, electric accessories and the like in the operation process of the fuel cell stack is not effectively utilized, so that the problem of heat energy resource waste is caused to a certain extent, and the operation cost of the fuel cell for the vehicle is increased.
For this reason, a heat treatment system for a fuel cell stack is desired that can effectively solve the problem of waste heat waste of the existing fuel cell stack.
Disclosure of Invention
The invention aims to solve the problems and provides a technical scheme for improving the prior art, so as to provide a heat treatment system for a fuel cell stack, which can effectively solve the problem of waste heat of the prior fuel cell engine stack.
The invention aims at achieving the following technical scheme.
One embodiment of the present invention provides a heat treatment system for a fuel cell stack, wherein the system includes a first heat-radiating circulation loop, a second heat-radiating circulation loop, and a third heat-radiating circulation loop, the first heat-radiating circulation loop being in communication with the second heat-radiating circulation loop through a first heat exchanger, the second heat-radiating circulation loop being in communication with the third heat-radiating circulation loop through a second heat exchanger, and the first heat-radiating circulation loop being in communication with the fuel cell stack;
the first heat dissipation circulation loop and the second heat dissipation circulation loop are internally provided with cooling liquid which is special antifreezing solution for the fuel cell stack and is used for recovering waste heat generated by the fuel cell stack;
the third heat dissipation circulation loop comprises a radiator for heating by utilizing waste heat recovered through the first heat dissipation circulation loop and the second heat dissipation circulation loop.
According to the heat treatment system for the fuel cell stack provided by the embodiment of the invention, the first heat exchanger is a plate heat exchanger, the second heat exchanger is a tube heat exchanger, and the radiator is a fan.
A heat treatment system for a fuel cell stack according to the above-described one embodiment of the present invention, wherein the first heat dissipation circulation loop includes a solenoid valve, an expansion tank, a water pump, a PTC heater, and a temperature sensor, and a plurality of pipes;
one end of the water pump is communicated with the fuel cell stack through a pipeline, and the other end of the water pump is communicated with the plate heat exchanger through a pipeline;
one end of the electromagnetic valve is communicated with one end of the expansion water tank through a pipeline, the other end of the electromagnetic valve is communicated between the fuel cell stack and the water pump through a pipeline, and the other end of the expansion water tank is communicated between the water pump and the plate heat exchanger through a pipeline;
one end of the PTC heater is communicated with the fuel cell stack through a pipeline, and the other end of the PTC heater is communicated with the plate heat exchanger through a pipeline; and
the temperature sensor is disposed on a pipe line between the fuel cell stack and the PTC heater.
A heat treatment system for a fuel cell stack according to the above-described one embodiment of the present invention, wherein the second heat dissipation circulation loop includes an expansion tank, a water pump, a PTC heater, a solenoid valve, a temperature sensor, a radiator, a solenoid valve, and a plurality of pipes;
one end of the water pump is communicated with the plate heat exchanger through a pipeline, the other end of the water pump is communicated with one end of the PTC heater through a pipeline, the other end of the PTC heater is communicated with one end of the tubular heat exchanger through a pipeline, the other end of the tubular heater is communicated with one end of the radiator through a pipeline, and the other end of the radiator is communicated with the plate heat exchanger through a pipeline;
one end of the electromagnetic valve is communicated between the water pump and the PTC heater through a pipeline, and the other end of the electromagnetic valve is communicated between the tubular radiator and the radiator through a pipeline;
one end of the expansion water tank is communicated between the plate heat exchanger and the water pump through a pipeline, and the other end of the expansion water tank is communicated between the water pump and the PTC heater through a pipeline;
the temperature sensor is arranged on a pipeline between the PTC heater and the tubular heat exchanger; and
one end of the electromagnetic valve is communicated between the tubular heat exchanger and the radiator through a pipeline, and the other end of the electromagnetic valve is communicated between the radiator and the plate heat exchanger through a pipeline.
A heat treatment system for a fuel cell stack according to the above-described one embodiment of the present invention is provided, wherein the third heat dissipation circulation loop further includes a temperature sensor and an air inlet pipe and an air outlet pipe;
the air heating device is communicated with the tubular heat exchanger through the air inlet pipeline and the air outlet pipeline respectively; and
the temperature sensor is arranged on the air outlet pipeline between the air heating device and the tubular heat exchanger.
The invention has the beneficial technical effects that:
(1) The heat treatment system for the fuel cell stack comprises a first heat dissipation circulation loop A, a second heat dissipation circulation loop B and a third heat dissipation circulation loop C, wherein the three heat dissipation circulation loops and a fuel cell engine form an integral system, so that the cold starting consumption and the cold starting time are optimized, meanwhile, the heat energy generated during the operation of the fuel cell is fully utilized, and the energy conversion rate of the fuel cell is improved.
(2) The heat treatment system for the fuel cell stack, disclosed by the invention, has the advantages that the first heat dissipation circulation loop A can be completely packaged in the fuel cell engine and is directly communicated with the fuel cell stack, so that the engine can finish the filling of the antifreeze when leaving the factory, the installation of a user is convenient, the installation space is saved, and the installation steps are simplified; in addition, the electromagnetic valve 1 is arranged in the first heat dissipation circulation loop A, so that the cold start time can be saved.
(3) The electromagnetic valve 8 is arranged in the second heat radiation circulation loop B, and whether the heat exchange of the warm air water tank is needed or not can be judged according to a preset temperature threshold; the PTC heater 7 is arranged, and whether the cooling liquid needs to be heated or not can be judged according to a preset temperature threshold value; the electromagnetic valve 14 is arranged, so that whether the radiator integrated parts are required to work or not can be judged according to a preset temperature threshold value, and the power consumption of the fan during work is saved.
Drawings
The present disclosure will become more readily understood with reference to the accompanying drawings. As will be readily appreciated by those skilled in the art: the drawings are only for illustrating the technical scheme of the present invention and are not intended to limit the scope of the present invention. In the figure:
fig. 1 is a schematic diagram of a heat treatment system for a fuel cell stack according to one embodiment of the present invention.
Detailed Description
Fig. 1 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. In order to teach the technical solution of the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations or alternatives derived from these embodiments that fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Thus, the invention is not limited to the following alternative embodiments, but only by the claims and their equivalents.
Fig. 1 is a schematic diagram of a heat treatment system for a fuel cell stack according to one embodiment of the present invention. As shown in fig. 1, one embodiment of the present invention provides a heat treatment system for a fuel cell stack, which includes a first heat radiation circulation loop a, a second heat radiation circulation loop B, and a third heat radiation circulation loop C, wherein the first heat radiation circulation loop a communicates with the second heat radiation circulation loop B through a first heat exchanger plate heat exchanger 4, the second heat radiation circulation loop B communicates with the third heat radiation circulation loop C through a second heat exchanger tube heat exchanger 10, and the first heat radiation circulation loop a communicates with a fuel cell stack 37. The first heat dissipation circulation loop a and the second heat dissipation circulation loop B are respectively provided with a cooling liquid, and the cooling liquid is an antifreezing solution special for the fuel cell and is used for recovering waste heat generated by the fuel cell stack 37. The third heat dissipation circulation loop C is a warm air loop, and includes a radiator 36, where the radiator 36 may be a fan, and is configured to perform heating by using waste heat recovered through the first heat dissipation circulation loop a and the second heat dissipation circulation loop B. The fuel cell stack 37 is a core component in the fuel cell engine 23, and the fuel cell stack 37 is used to supply electric power and generate heat energy for the operation of the fuel cell engine 23.
The first heat radiation cycle a includes a solenoid valve 1, an expansion tank 2, a water pump 3, a PTC heater 12, and a temperature sensor 13, and a plurality of pipes 16 to 22. One end of the water pump 3 is communicated with the fuel cell stack 37 through a pipeline 19, and the other end of the water pump 3 is communicated with the plate heat exchanger 4 through a pipeline 20. One end of the solenoid valve 1 communicates with a line 19 through a line 16, the other end of the solenoid valve 1 communicates with one end of the expansion tank 2 through a line 17, and the other end of the expansion tank 2 communicates with a line 20 through a line 18. One end of the PTC heater 12 communicates with the fuel cell stack 37 through a pipe 21, the other end of the PTC heater 12 communicates with the plate heat exchanger 4 through a pipe 22, and the temperature sensor 13 is provided on the pipe 21.
The second heat radiation circulation loop B includes an expansion tank 5, a water pump 6, a PTC heater 7, a solenoid valve 8, a temperature sensor 9, a radiator 11, a solenoid valve 14, and a plurality of pipes 24 to 34. Wherein, one end of the water pump 6 is communicated with the plate heat exchanger 4 through a pipeline 24, the other end of the water pump 6 is communicated with one end of the PTC heater 7 through a pipeline 25, and the other end of the PTC heater 7 is communicated with the tubular heat exchanger 10 through a pipeline 26. One end of the solenoid valve 8 communicates with the line 25 via the line 27, and the other end of the solenoid valve 8 communicates with the first port 290 of the line 29 via the line 28. One end of the radiator 11 is connected to the tube heat exchanger 10 via a pipe 29, and the other end of the radiator 11 is connected to the plate heat exchanger 4 via a pipe 32. One end of the solenoid valve 14 communicates with the second port 291 of the line 29 via the line 30, and the other end of the solenoid valve 14 communicates with the port 320 of the line 32 via the line 31. One end of the expansion tank 5 communicates with the second port 251 of the line 25 via the line 34, and the other end of the expansion tank 5 communicates with the line 24 via the line 33. The temperature sensor 9 is arranged on the line 26.
The third heat radiation cycle C includes a radiator 36, a temperature sensor 15, an air outlet pipe 38, and an air inlet pipe 39. Wherein two interfaces (not shown) of the radiator 36 are in communication with two interfaces (not shown) of the tubular heat exchanger 10 and the outlet line 38 via the inlet line 39, respectively. The temperature sensor 15 is arranged on the outlet line 38.
When the above heat treatment system is in operation and the temperature displayed by the temperature sensor 13 is lower than the cold start set temperature threshold value M1, the electromagnetic valve 1 is closed to reduce the volume of cold start coolant, and the PTC heater 12 starts to operate until the temperature in the coolant (not shown) is equal to or higher than the set temperature threshold value M2. With the start-up of the fuel cell stack 37 in the fuel cell engine 23, the coolant (not shown) in the first heat dissipation circulation loop a rises to a suitable operating temperature of the fuel cell stack 37, for example, 60-70 ℃. When it is higher than the temperature threshold M3 set at the inlet of the fuel cell stack 37, the second heat radiation cycle B starts to operate. The cooling liquid (not shown) in the second heat dissipation circulation loop B exchanges heat with the cooling liquid (not shown) in the first heat dissipation circulation loop A through the plate heat exchanger 4, when the ambient temperature is lower than the threshold value N1, the electromagnetic valve 8 is closed, the electromagnetic valve 14 is opened, the cooling liquid exchanges heat with air, and warm air is provided for the interior of the vehicle through the third heat dissipation circulation loop C. When the temperature of the temperature sensor 15 is lower than the threshold value N2, the PTC heater 7 is started to heat the cooling liquid, the temperature of the air is guaranteed to be raised to the required temperature threshold value N3, the temperature of the temperature sensor 9 is always lower than the temperature of the temperature sensor 13 in the process, and otherwise, the electromagnetic valve 14 is closed to ensure that the heat dissipation capacity of the fuel cell stack 37 is timely met.
As described above, the heat treatment system for a fuel cell stack according to the present invention includes the first heat dissipation circulation loop a, the second heat dissipation circulation loop B, and the third heat dissipation circulation loop C, which form an integral system with the fuel cell engine, so as to optimize the cold start amount and cold start time, and simultaneously, fully utilize the heat energy generated when the fuel cell is operated, and improve the energy conversion rate of the fuel cell. The first heat dissipation circulation loop A can be completely encapsulated in the fuel cell engine and is directly communicated with the fuel cell stack, so that the engine can be filled with the antifreeze when leaving the factory, the installation of a user is convenient, the installation space is saved, and the installation steps are simplified; in addition, the electromagnetic valve 1 is arranged in the first heat dissipation circulation loop A, so that the cold start time can be saved. The electromagnetic valve 8 is arranged in the second heat dissipation circulation loop B, and whether the heat exchange of the warm air water tank is needed or not can be judged according to a preset temperature threshold value; the PTC heater 7 is arranged, and whether the cooling liquid needs to be heated or not can be judged according to a preset temperature threshold value; the electromagnetic valve 14 is arranged, so that whether the radiator integrated parts are required to work or not can be judged according to a preset temperature threshold value, and the power consumption of the fan during work is saved.
It will of course be realised that while the foregoing has been given by way of illustrative example of this invention, such and other modifications and variations thereto as would be apparent to persons skilled in the art are deemed to fall within the broad scope and ambit of this invention as is herein set forth. Thus, although the invention has been described with reference to preferred embodiments, it is not intended to be limited thereby to the novel apparatus, but, on the contrary, it is intended to cover various modifications and equivalent arrangements included within the broad scope of the foregoing disclosure, and the appended claims.
Claims (1)
1. A heat treatment system for a fuel cell stack, characterized by: the fuel cell stack comprises a first heat dissipation circulation loop, a second heat dissipation circulation loop and a third heat dissipation circulation loop, wherein the first heat dissipation circulation loop is communicated with the second heat dissipation circulation loop through a first heat exchanger (4), the second heat dissipation circulation loop is communicated with the third heat dissipation circulation loop through a second heat exchanger (10), and the first heat dissipation circulation loop is communicated with a fuel cell stack (37);
the first heat dissipation circulation loop and the second heat dissipation circulation loop are internally provided with cooling liquid which is special antifreezing solution for the fuel cell stack (37) and is used for recovering waste heat generated by the fuel cell stack (37);
the third heat-dissipating circulation loop includes a radiator (36) for heating with waste heat recovered through the first heat-dissipating circulation loop and the second heat-dissipating circulation loop;
the first heat exchanger (4) is a plate heat exchanger, the second heat exchanger (10) is a tubular heat exchanger, and the radiator (36) is a fan;
the first heat dissipation circulation loop comprises an electromagnetic valve (1), an expansion water tank (2), a water pump (3), a PTC heater (12), a temperature sensor (13) and a plurality of pipelines;
one end of the water pump (3) is communicated with the fuel cell stack (37) through a pipeline, and the other end of the water pump (3) is communicated with the first heat exchanger (4) through a pipeline;
one end of the electromagnetic valve (1) is communicated with one end of the expansion water tank (2) through a pipeline, the other end of the electromagnetic valve (1) is communicated between the fuel cell stack (37) and the water pump (3) through a pipeline, and the other end of the expansion water tank (2) is communicated between the water pump (3) and the first heat exchanger (4) through a pipeline;
one end of the PTC heater (12) is communicated with the fuel cell stack (37) through a pipeline, and the other end of the PTC heater (12) is communicated with the first heat exchanger (4) through a pipeline; and the temperature sensor (13) is provided on a pipe line between the fuel cell stack (37) and the PTC heater (12);
the second heat dissipation circulation loop comprises an expansion water tank (5), a water pump (6), a PTC heater (7), an electromagnetic valve (8), a temperature sensor (9), a radiator (11), an electromagnetic valve (14) and a plurality of pipelines;
one end of the water pump (6) is communicated with the first heat exchanger (4) through a pipeline, the other end of the water pump (6) is communicated with one end of the PTC heater (7) through a pipeline, the other end of the PTC heater (7) is communicated with one end of the second heat exchanger (10) through a pipeline, the other end of the second heat exchanger (10) is communicated with one end of the radiator (11) through a pipeline, and the other end of the radiator (11) is communicated with the first heat exchanger (4) through a pipeline;
one end of the electromagnetic valve (8) is communicated between the water pump (6) and the PTC heater (7) through a pipeline, and the other end of the electromagnetic valve (8) is communicated between the second heat exchanger (10) and the radiator (11) through a pipeline;
one end of the expansion water tank (5) is communicated between the first heat exchanger (4) and the water pump (6) through a pipeline, and the other end of the expansion water tank (5) is communicated between the water pump (6) and the PTC heater (7) through a pipeline;
the temperature sensor (9) is arranged on a pipeline between the PTC heater (7) and the second heat exchanger (10); and
one end of the electromagnetic valve (14) is communicated between the second heat exchanger (10) and the radiator (11) through a pipeline, and the other end of the electromagnetic valve (14) is communicated between the radiator (11) and the first heat exchanger (4) through a pipeline;
the third heat dissipation circulation loop further comprises a temperature sensor (15), an air inlet pipeline and an air outlet pipeline;
wherein the air heating device is communicated with the second heat exchanger (10) through the air inlet pipeline and the air outlet pipeline respectively; and
the temperature sensor (15) is arranged on the air outlet pipeline between the air heating device and the second heat exchanger (10);
when the heat treatment system works, when the temperature displayed by the temperature sensor (13) is lower than a cold start set temperature threshold value M1, the electromagnetic valve (1) is closed to reduce the volume of cold start cooling liquid, and the PTC heater (12) starts to work until the temperature in the cooling liquid is more than or equal to a set temperature threshold value M2; with the start-up of the fuel cell stack (37) in the fuel cell engine (23), the coolant in the first heat-dissipating circulation loop is raised to a suitable operating temperature of the fuel cell stack (37); when the temperature is higher than a temperature threshold M3 set by an inlet of the fuel cell stack (37), the second heat dissipation circulation loop starts to work; the cooling liquid in the second heat dissipation circulation loop exchanges heat with the cooling liquid in the first heat dissipation circulation loop through the first heat exchanger (4), when the ambient temperature is lower than a threshold value N1, the electromagnetic valve (8) is closed, the electromagnetic valve (14) is opened, the cooling liquid exchanges heat with air, and warm air is provided for the interior of the vehicle through the third heat dissipation circulation loop; when the temperature of the temperature sensor (15) is lower than the threshold value N2, the PTC heater (7) is started to heat the cooling liquid, the temperature of the air is guaranteed to be raised to a required temperature threshold value N3, the temperature of the temperature sensor (9) is guaranteed to be always lower than the temperature of the temperature sensor (13) in the process, and otherwise, the electromagnetic valve (14) is closed to ensure that the heat dissipation capacity of the fuel cell stack (37) is timely met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810216165.0A CN108461777B (en) | 2018-03-16 | 2018-03-16 | Heat treatment system for fuel cell stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810216165.0A CN108461777B (en) | 2018-03-16 | 2018-03-16 | Heat treatment system for fuel cell stack |
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| CN108461777A CN108461777A (en) | 2018-08-28 |
| CN108461777B true CN108461777B (en) | 2024-03-22 |
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| CN201810216165.0A Active CN108461777B (en) | 2018-03-16 | 2018-03-16 | Heat treatment system for fuel cell stack |
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