CN110712496A - Thermal management system of fuel cell vehicle - Google Patents
Thermal management system of fuel cell vehicle Download PDFInfo
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- CN110712496A CN110712496A CN201911000978.7A CN201911000978A CN110712496A CN 110712496 A CN110712496 A CN 110712496A CN 201911000978 A CN201911000978 A CN 201911000978A CN 110712496 A CN110712496 A CN 110712496A
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- cooling liquid
- way valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2221—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating an intermediate liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
- B60L58/32—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load
- B60L58/34—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load by heating
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/00307—Component temperature regulation using a liquid flow
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The application provides a thermal management system of a fuel cell vehicle, which is used for enabling the thermal management system to be in a common working mode, a passenger compartment heating mode and a power battery heating mode by adjusting the conduction states of an air three-way valve, a first cooling liquid three-way valve and a second cooling liquid three-way valve, and achieving the purpose that the same thermal management system works in different working modes.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to a thermal management system of a fuel cell vehicle.
Background
At present, the heating of the fuel cell vehicle is mainly carried out by PTC or by utilizing the residual heat of the cooling liquid of the fuel cell, and the heating of the power cell is mainly carried out by PTC.
However, PTC heating, which directly converts high-quality electrical energy into low-quality thermal energy, is not economical.
The waste heat of the fuel cell cooling liquid is adopted, the temperature is not very high due to the working characteristics of the fuel cell, a large part of working conditions are about 70-80 ℃, the waste heat is directly used for heating, the temperature is not high enough, and PTC is often used for supplementing heating.
Disclosure of Invention
In view of the above, in order to solve the above problems, the present invention provides a thermal management system for a fuel cell vehicle, which has the following technical solutions:
a thermal management system for a fuel cell vehicle, the thermal management system comprising: the system comprises a water pump, a galvanic pile, a first water air cooler, an air compressor, an air three-way valve, a second water air cooler, a warm air core, a first cooling liquid three-way valve, a second cooling liquid three-way valve, a liquid-liquid heat exchanger and a power battery temperature management subsystem;
wherein the thermal management system is placed in a normal operation mode, a passenger compartment heating mode, and a power battery heating mode by adjusting the conduction states of the air three-way valve, the first coolant three-way valve, and the second coolant three-way valve.
Preferably, in the above thermal management system, the thermal management system further includes: a thermostat, a radiator and a cooling fan;
the thermostat is used for detecting temperature;
the radiator and the cooling fan are used for cooling treatment.
Preferably, in the above thermal management system, when the thermal management system is in the normal operation mode,
the water pump applies work to the cooling liquid, and the cooling liquid respectively flows into the galvanic pile and the first water air cooler to be subjected to heat dissipation treatment;
the cooling liquid with the increased temperature passes through the second cooling liquid three-way valve, and the conduction state of the second cooling liquid three-way valve is controlled, so that the cooling liquid enters the thermostat;
when the temperature of the cooling liquid is lower than a preset threshold value, the cooling liquid flows into the water pump;
when the temperature of the cooling liquid is higher than the preset threshold value, the cooling liquid flows into the radiator, is combined with the cooling fan to perform cooling treatment on the cooling liquid, and then flows into the water pump.
Preferably, in the above thermal management system, the thermal management system further includes: a blower and an auxiliary water pump;
wherein the blower operates when the thermal management system is in the passenger cabin heating mode;
the auxiliary water pump is used for pressurization treatment.
Preferably, in the above thermal management system, when the thermal management system is in the passenger compartment heating mode,
the water pump applies work to the cooling liquid, and the cooling liquid respectively flows into the galvanic pile and the first water air cooler to be subjected to heat dissipation treatment;
the cooling liquid with the increased temperature sequentially passes through the second cooling liquid three-way valve and the first cooling liquid three-way valve, and the conduction states of the second cooling liquid three-way valve and the first cooling liquid three-way valve are controlled, so that the cooling liquid enters the second water air cooler;
the air compressor passes the compressed air through the air three-way valve and controls the conduction state of the air three-way valve so that the compressed air enters the second water air cooler and further heats the cooling liquid;
and the cooling liquid after the temperature rise treatment enters the warm air core body, and air is forcibly blown through the warm air core body by combining with the blower and then enters the passenger compartment so as to heat the passenger compartment.
Preferably, in the above thermal management system, when the thermal management system is in the passenger compartment heating mode,
the cooling liquid passing through the warm air core body flows into the thermostat through the auxiliary water pump;
when the temperature of the cooling liquid is lower than a preset threshold value, the cooling liquid flows into the water pump;
when the temperature of the cooling liquid is higher than the preset threshold value, the cooling liquid flows into the radiator, is combined with the cooling fan to perform cooling treatment on the cooling liquid, and then flows into the water pump.
Preferably, in the above thermal management system, the power battery temperature management subsystem includes:
the system comprises a plate heat exchanger, a water heating PTC, a power battery cell and a power battery water pump.
Preferably, in the above thermal management system, when the thermal management system is in the power battery heating mode,
the water pump applies work to the cooling liquid, and the cooling liquid respectively flows into the galvanic pile and the first water air cooler to be subjected to heat dissipation treatment;
the cooling liquid with the increased temperature sequentially passes through the second cooling liquid three-way valve and the first cooling liquid three-way valve, and the conduction states of the second cooling liquid three-way valve and the first cooling liquid three-way valve are controlled, so that the cooling liquid enters the liquid-liquid heat exchanger;
the power battery water pump is used for pressurizing cooling liquid in the liquid-liquid heat exchanger and then enters the power battery cell for heating;
the plate heat exchanger is used for cooling the power battery core;
and the water heating PTC is used for carrying out auxiliary heating on the power battery core.
Preferably, in the above thermal management system, when the thermal management system is in the power battery heating mode,
the cooling liquid passing through the liquid-liquid heat exchanger flows into the thermostat through the auxiliary water pump;
when the temperature of the cooling liquid is lower than a preset threshold value, the cooling liquid flows into the water pump;
when the temperature of the cooling liquid is higher than the preset threshold value, the cooling liquid flows into the radiator, is combined with the cooling fan to perform cooling treatment on the cooling liquid, and then flows into the water pump.
Compared with the prior art, the invention has the following beneficial effects:
according to the thermal management system provided by the invention, the conduction states of the air three-way valve, the first cooling liquid three-way valve and the second cooling liquid three-way valve are adjusted, so that the thermal management system is in a common working mode, a passenger compartment heating mode and a power battery heating mode, and the purpose that the same thermal management system works in different working modes is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram of a thermal management system of a fuel cell vehicle according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a thermal management system of a fuel cell vehicle in a normal operation mode according to an embodiment of the present invention;
FIG. 3 is a schematic view of a thermal management system for a fuel cell vehicle in a passenger compartment heating mode according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a thermal management system of a fuel cell vehicle in a power battery heating mode according to an embodiment of the present invention.
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. 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.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, fig. 1 is a schematic diagram of a thermal management system of a fuel cell vehicle according to an embodiment of the present invention.
The thermal management system comprises: the system comprises a water pump 1, a galvanic pile 2, a first water air intercooler 3, an air compressor 4, an air three-way valve 5, a second water air intercooler 6, a warm air core 7, a first cooling liquid three-way valve 9, a second cooling liquid three-way valve 10, a liquid-liquid heat exchanger 14 and a power battery temperature management subsystem;
wherein the thermal management system is placed in a normal operation mode, a passenger compartment heating mode and a power battery heating mode by adjusting the conduction states of the air three-way valve 5, the first coolant three-way valve 9 and the second coolant three-way valve 10.
In this embodiment, the air circuit and the water circuit are controlled and switched by using one air three-way valve 5 and two coolant three-way valves, so that the same thermal management system can work in different working modes.
Further, based on the above-described embodiment of the present invention, as shown in fig. 1,
the thermal management system further comprises: a thermostat 11, a radiator 12, and a radiator fan 13;
the thermostat 11 is used for detecting temperature;
the heat sink 12 and the heat dissipation fan 13 are used for cooling.
In this embodiment, the thermostat 11, the radiator 12, and the cooling fan 13 are disposed at a terminal of a water loop of the thermal management system, and are configured to perform temperature detection on the coolant before the coolant flows back to the water pump 1, perform temperature reduction processing through the radiator 12 and the cooling fan 13 when the temperature exceeds a preset value, and then flow back the coolant to the water pump.
Further, referring to fig. 2 based on the above-mentioned embodiment of the present invention, fig. 2 is a schematic diagram of a thermal management system of a fuel cell vehicle in a normal operation mode according to an embodiment of the present invention.
When the thermal management system is in the normal operating mode,
the water pump 1 applies work to the cooling liquid, and the cooling liquid respectively flows into the electric pile 2 and the first water air intercooler 3 to be subjected to heat dissipation treatment;
the coolant with the increased temperature passes through the second coolant three-way valve 10, and the conduction state of the second coolant three-way valve 10 is controlled, so that the coolant enters the thermostat 11;
when the temperature of the cooling liquid is lower than a preset threshold value, the cooling liquid flows into the water pump 1;
when the temperature of the cooling liquid is higher than the preset threshold value, the cooling liquid flows into the radiator 12, is cooled by combining the cooling fan 13, and then flows into the water pump 1.
In this embodiment, when in the normal operation mode, the paths a and c of the air three-way valve 5 are communicated, and the path b is closed, so that the compressed air is cooled by the first water air cooler 3 and then enters the electric pile 2; the paths a and c of the first cooling liquid three-way valve 9 are communicated, and the path b is closed; the paths a and c of the second coolant three-way valve 10 are communicated, and the path b is closed.
At this time, the water pump 1 applies work to the coolant, the coolant flows into the electric pile 2 and the first water air cooler 3 respectively to perform heat dissipation treatment, and the coolant with increased temperature enters the thermostat 11 through paths a and c of the second coolant three-way valve 10.
If the temperature of the coolant is low, the coolant flows back to the water pump 1.
If the temperature of the cooling liquid is higher, the cooling liquid enters the radiator 12, heat is transferred to the air through the cooling fan 13, and the cooled cooling liquid flows back to the water pump 1.
In the above, the cycle of the whole ordinary operation mode is completed.
Further, according to the above embodiment of the present invention, as shown in fig. 1, the thermal management system further includes: a blower 8 and an auxiliary water pump 19;
wherein the blower 8 is operated when the thermal management system is in the passenger compartment heating mode;
the auxiliary water pump 19 is used for pressurization treatment.
Further, referring to fig. 3 based on the above-mentioned embodiment of the present invention, fig. 3 is a schematic diagram of a thermal management system of a fuel cell vehicle in a passenger compartment heating mode according to an embodiment of the present invention.
When the thermal management system is in the passenger compartment heating mode,
the water pump 1 applies work to the cooling liquid, and the cooling liquid respectively flows into the electric pile 2 and the first water air intercooler 3 to be subjected to heat dissipation treatment;
the coolant with the increased temperature sequentially passes through the second coolant three-way valve 10 and the first coolant three-way valve 9, and the conduction states of the second coolant three-way valve 10 and the first coolant three-way valve 9 are controlled, so that the coolant enters the second water air cooler 6;
the air compressor 4 controls the conduction state of the air three-way valve 5 by passing the compressed air through the air three-way valve 5, so that the compressed air enters the second water air cooler 6, and the temperature of the cooling liquid is further increased;
the heated cooling liquid enters the warm air core 7, and is combined with the blower 8 to forcibly blow air through the warm air core 7 and then enter the passenger compartment so as to heat the passenger compartment.
The coolant passing through the warm air core 7 flows into the thermostat 11 through the auxiliary water pump 19;
when the temperature of the cooling liquid is lower than a preset threshold value, the cooling liquid flows into the water pump 1;
when the temperature of the cooling liquid is higher than the preset threshold value, the cooling liquid flows into the radiator 12, is cooled by combining the cooling fan 13, and then flows into the water pump 1.
In this embodiment, in the passenger compartment heating mode, the a and b paths of the air three-way valve 5 are communicated, and the c path is closed; the paths a and c of the first cooling liquid three-way valve 9 are communicated, and the path b is closed; the paths a and b of the second coolant three-way valve 10 are communicated, and the path c is closed.
At this time, the water pump 1 applies work to the coolant, the coolant flows into the electric pile 2 and the first water air cooler 3 respectively, the heat dissipation treatment is performed on the coolant, and the coolant with increased temperature (about 70-80 ℃) enters the second water air cooler 6 through the paths a and b of the second coolant three-way valve 10 and the path c and a of the first coolant three-way valve 9.
On the air side, the air compressed by the air compressor 4 enters the second water air cooler 6 through paths a and b of the air three-way valve 5, and further heats the cooling liquid therein (which can be heated to 85-95 ℃).
The cooling liquid heated by the first water air intercooler 3 and the second water air intercooler 6 enters the warm air core body 7, air is forced to blow through the warm air core body 7 through the blower 8, and the heated air enters the passenger compartment for heating.
The cooling liquid after heat dissipation by the warm air core 7 continuously passes through the auxiliary water pump 19, the thermostat 11 and the radiator 12, and then enters the water pump again.
After entering the thermostat 11, if the temperature of the coolant is low, the coolant flows back to the water pump 1.
If the temperature of the cooling liquid is higher, the cooling liquid enters the radiator 12, heat is transferred to the air through the cooling fan 13, and the cooled cooling liquid flows back to the water pump 1.
The auxiliary water pump 19 is used for pressurizing the coolant.
In the above, the cycle of the entire passenger compartment heating mode is completed.
Further, according to the above embodiment of the present invention, as shown in fig. 1, the power battery temperature management subsystem includes:
the device comprises a plate heat exchanger 15, a water heating PTC16, a power battery cell 17 and a power battery water pump 18.
Further, referring to fig. 4 based on the above-mentioned embodiment of the present invention, fig. 4 is a schematic diagram of a thermal management system of a fuel cell vehicle in a power battery heating mode according to an embodiment of the present invention.
When the thermal management system is in the power cell heating mode,
the water pump 1 applies work to the cooling liquid, and the cooling liquid respectively flows into the electric pile 2 and the first water air intercooler 3 to be subjected to heat dissipation treatment;
the coolant with the increased temperature sequentially passes through the second coolant three-way valve 10 and the first coolant three-way valve 9, and the conduction states of the second coolant three-way valve 10 and the first coolant three-way valve 9 are controlled, so that the coolant enters the liquid-liquid heat exchanger 14;
the power battery water pump 18 is used for pressurizing the cooling liquid in the liquid-liquid heat exchanger 14, and then the cooling liquid enters the power battery cell 17 for heating;
the plate heat exchanger 15 is used for cooling the power battery cell 17;
the water heating PTC16 is used for auxiliary heating of the power battery cell 17.
The coolant passing through the liquid-liquid heat exchanger 14 flows into the thermostat 11 through the auxiliary water pump 19;
when the temperature of the cooling liquid is lower than a preset threshold value, the cooling liquid flows into the water pump 1;
when the temperature of the cooling liquid is higher than the preset threshold value, the cooling liquid flows into the radiator 12, is cooled by combining the cooling fan 13, and then flows into the water pump 1.
In this embodiment, when in the power battery heating mode, the paths a and c of the air three-way valve 5 are communicated, and the path b is closed, so that the compressed air is cooled by the first water air cooler 3 and then enters the electric pile 2; the paths c and b of the first cooling liquid three-way valve 9 are communicated, and the path a is closed; the paths a and b of the second coolant three-way valve 10 are communicated, and the path c is closed.
At this time, the water pump 1 applies work to the coolant, the coolant flows into the electric pile 2 and the first water air cooler 3 respectively, the heat dissipation treatment is performed on the coolant, and the coolant with increased temperature (about 70-80 ℃) enters the liquid-liquid heat exchanger 14 through the paths a and b of the second coolant three-way valve 10 and the paths c and b of the first coolant three-way valve 9.
The other side of the liquid-liquid heat exchanger 14 pressurizes the cooling liquid through a power battery water pump 18, and then enters a power battery cell 17 for heating.
And a refrigerant is introduced into one side of the plate heat exchanger 15, and a cooling liquid is introduced into the other side of the plate heat exchanger for cooling the power battery cell 17.
The water heating PTC16 is used to assist in heating the power battery cell 17 so that the power battery is in a suitable operating temperature range.
The coolant passing through the liquid-liquid heat exchanger 14 passes through the auxiliary water pump 19, the thermostat 11, and the radiator 12, and then enters the water pump 1 again.
After entering the thermostat 11, if the temperature of the coolant is low, the coolant flows back to the water pump 1.
If the temperature of the cooling liquid is higher, the cooling liquid enters the radiator 12, heat is transferred to the air through the cooling fan 13, and the cooled cooling liquid flows back to the water pump 1.
The auxiliary water pump 19 is used for pressurizing the coolant.
In the above, the cycle of the whole power battery heating mode is completed.
Based on all the embodiments of the invention, the thermal management system of the fuel cell vehicle provided by the invention utilizes the combination of the waste heat of the fuel cell stack and the waste heat of the compressed air of the air compressor to heat the passenger compartment, thereby achieving the purposes of energy conservation and emission reduction and solving the problem of low temperature of the waste heat of the fuel cell.
In addition, the waste heat of the electric pile is used for supplying heat to the power battery, and the purposes of energy conservation and emission reduction are also achieved.
Furthermore, one air three-way valve and two cooling liquid three-way valves are used for controlling and switching the air loop and the water loop, so that the purpose that the same thermal management system works in different working modes is achieved.
And the water heating PTC, the plate heat exchanger and the liquid-liquid heat exchanger are used for controlling the temperature of the power battery cell, so that the aims of energy conservation and emission reduction are also fulfilled.
Finally, the purpose of exchanging heat in different circulation paths is achieved by utilizing two water air coolers and one liquid-liquid heat exchanger, and comprehensive utilization of heat is achieved.
The foregoing detailed description of the thermal management system of a fuel cell vehicle according to the present invention is provided, and the principles and embodiments of the present invention are described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include or include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A thermal management system for a fuel cell vehicle, the thermal management system comprising: the system comprises a water pump, a galvanic pile, a first water air cooler, an air compressor, an air three-way valve, a second water air cooler, a warm air core, a first cooling liquid three-way valve, a second cooling liquid three-way valve, a liquid-liquid heat exchanger and a power battery temperature management subsystem;
wherein the thermal management system is placed in a normal operation mode, a passenger compartment heating mode, and a power battery heating mode by adjusting the conduction states of the air three-way valve, the first coolant three-way valve, and the second coolant three-way valve.
2. The thermal management system of claim 1, further comprising: a thermostat, a radiator and a cooling fan;
the thermostat is used for detecting temperature;
the radiator and the cooling fan are used for cooling treatment.
3. The thermal management system of claim 2, wherein when said thermal management system is in said normal mode of operation,
the water pump applies work to the cooling liquid, and the cooling liquid respectively flows into the galvanic pile and the first water air cooler to be subjected to heat dissipation treatment;
the cooling liquid with the increased temperature passes through the second cooling liquid three-way valve, and the conduction state of the second cooling liquid three-way valve is controlled, so that the cooling liquid enters the thermostat;
when the temperature of the cooling liquid is lower than a preset threshold value, the cooling liquid flows into the water pump;
when the temperature of the cooling liquid is higher than the preset threshold value, the cooling liquid flows into the radiator, is combined with the cooling fan to perform cooling treatment on the cooling liquid, and then flows into the water pump.
4. The thermal management system of claim 2, further comprising: a blower and an auxiliary water pump;
wherein the blower operates when the thermal management system is in the passenger cabin heating mode;
the auxiliary water pump is used for pressurization treatment.
5. The thermal management system of claim 4, wherein when the thermal management system is in the passenger cabin heating mode,
the water pump applies work to the cooling liquid, and the cooling liquid respectively flows into the galvanic pile and the first water air cooler to be subjected to heat dissipation treatment;
the cooling liquid with the increased temperature sequentially passes through the second cooling liquid three-way valve and the first cooling liquid three-way valve, and the conduction states of the second cooling liquid three-way valve and the first cooling liquid three-way valve are controlled, so that the cooling liquid enters the second water air cooler;
the air compressor passes the compressed air through the air three-way valve and controls the conduction state of the air three-way valve so that the compressed air enters the second water air cooler and further heats the cooling liquid;
and the cooling liquid after the temperature rise treatment enters the warm air core body, and air is forcibly blown through the warm air core body by combining with the blower and then enters the passenger compartment so as to heat the passenger compartment.
6. The thermal management system of claim 5, wherein when the thermal management system is in the passenger cabin heating mode,
the cooling liquid passing through the warm air core body flows into the thermostat through the auxiliary water pump;
when the temperature of the cooling liquid is lower than a preset threshold value, the cooling liquid flows into the water pump;
when the temperature of the cooling liquid is higher than the preset threshold value, the cooling liquid flows into the radiator, is combined with the cooling fan to perform cooling treatment on the cooling liquid, and then flows into the water pump.
7. The thermal management system of claim 4, wherein the power cell temperature management subsystem comprises:
the system comprises a plate heat exchanger, a water heating PTC, a power battery cell and a power battery water pump.
8. The thermal management system of claim 7, wherein when the thermal management system is in the power cell heating mode,
the water pump applies work to the cooling liquid, and the cooling liquid respectively flows into the galvanic pile and the first water air cooler to be subjected to heat dissipation treatment;
the cooling liquid with the increased temperature sequentially passes through the second cooling liquid three-way valve and the first cooling liquid three-way valve, and the conduction states of the second cooling liquid three-way valve and the first cooling liquid three-way valve are controlled, so that the cooling liquid enters the liquid-liquid heat exchanger;
the power battery water pump is used for pressurizing cooling liquid in the liquid-liquid heat exchanger and then enters the power battery cell for heating;
the plate heat exchanger is used for cooling the power battery core;
and the water heating PTC is used for carrying out auxiliary heating on the power battery core.
9. The thermal management system of claim 8, wherein when the thermal management system is in the power cell heating mode,
the cooling liquid passing through the liquid-liquid heat exchanger flows into the thermostat through the auxiliary water pump;
when the temperature of the cooling liquid is lower than a preset threshold value, the cooling liquid flows into the water pump;
when the temperature of the cooling liquid is higher than the preset threshold value, the cooling liquid flows into the radiator, is combined with the cooling fan to perform cooling treatment on the cooling liquid, and then flows into the water pump.
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