CN117117235A - Thermal management system - Google Patents
Thermal management system Download PDFInfo
- Publication number
- CN117117235A CN117117235A CN202311118434.7A CN202311118434A CN117117235A CN 117117235 A CN117117235 A CN 117117235A CN 202311118434 A CN202311118434 A CN 202311118434A CN 117117235 A CN117117235 A CN 117117235A
- Authority
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- Prior art keywords
- heat exchange
- heat
- pipeline
- heat exchanger
- cooling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 39
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 34
- 239000002826 coolant Substances 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000017525 heat dissipation Effects 0.000 claims description 10
- 230000002528 anti-freeze Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical group [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001897 terpolymer Polymers 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
- H01M8/04052—Storage of heat in the fuel cell system
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—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
- H01M8/04029—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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Automation & Control Theory (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to a heat management system, which is used for controlling and managing heat of a fuel cell system and a lithium battery system, and comprises circulating pipelines respectively arranged between the fuel cell system and a heat exchanger and between the lithium battery system and the heat exchanger, wherein the circulating pipelines are connected with the heat exchanger, and heat exchange medium in the heat exchange pipelines exchanges heat in cooling medium in the circulating pipelines in the heat exchanger; the output end of the heat exchange pipeline is provided with a liquid storage pool; the circulating pipeline is provided with a temperature control valve, a motor pump and a temperature sensor which are connected with the controller circuit; the controller can control the power of the motor pump and the opening of the temperature control valve according to the temperature signal fed back by the temperature sensor so as to adjust the flow of the cooling medium of the circulating pipeline. The invention can store the heat generated in the operation of the fuel cell system and the lithium battery system, and the corresponding cooling strategy is implemented by monitoring the temperature of the cooling medium.
Description
Technical Field
The invention relates to the technical field of parallel connection use of fuel cells and lithium batteries, in particular to a thermal management system for preventing thermal runaway of a fuel cell system and a lithium battery system.
Background
The fuel cell is a novel power generation device capable of converting chemical energy of hydrogen into electric energy, and has the advantages of high energy conversion rate, no pollution and the like. As a new generation of power generation technology and the requirements of different application scenes, the fuel cell can be widely applied to the fields of electric automobiles, distributed power generation, transportation and the like. With the continuous provision of the technology maturity of fuel cells, the fuel cells are used as power sources and applied to the scenes of vehicles, fixed power stations and the like.
The fuel cell refers to a device which converts chemical energy of hydrogen into electric energy and generates heat at the same time by taking hydrogen or purified reformed gas as fuel and taking air or pure oxygen as oxidant in a proton exchange membrane fuel cell, and the recommended maximum working temperature of the fuel cell is generally 70-80 ℃. Beyond temperature, the life of the fuel cell is greatly affected and the electrical performance of the fuel cell is affected. In a normal state, the fuel cell uses wind or liquid as a medium and then dissipates heat in an air cooling mode, so that the temperature control purpose can be achieved, but the heat is not utilized, and the overall conversion efficiency of chemical energy is reduced.
The lithium battery is a lithium iron phosphate battery or a terpolymer lithium battery which is widely used at present. The optimal working temperature recommended currently for the lithium battery is 10-40 ℃, and the temperature difference inside the battery pack is allowed to be 5-8 ℃, so that the performance and the service life of the lithium battery have a good index. The lithium battery heat dissipation mode includes natural cooling, air cooling, liquid cooling, refrigerant refrigeration and the like.
When the fuel cell and the lithium battery are matched together for use, the independent temperature control mode of the fuel cell system and the lithium battery system can cause the defects of low conversion efficiency, higher initial construction cost, complex maintenance and the like of the power supply system.
Disclosure of Invention
In order to solve the above problems, the present invention proposes a thermal management system for controlling and managing heat of a fuel cell system and a lithium cell system, comprising:
a heat exchanger;
a first circulation line disposed between the fuel cell system and the heat exchanger;
the second circulating pipeline is arranged between the lithium battery system and the heat exchanger;
the heat exchange pipeline is connected with the heat exchanger, and a heat exchange medium in the heat exchanger exchanges heat with cooling mediums in the first circulation pipeline and the second circulation pipeline in the heat exchanger; the output end of the heat exchange pipeline is provided with a liquid storage tank which is used for storing heat exchange media subjected to heat exchange in the heat exchange pipeline;
the first circulating pipeline and the second circulating pipeline are respectively provided with a temperature control valve, a motor pump and a temperature sensor which are connected with a controller circuit;
the controller can control the power of the corresponding motor pump and the opening of the corresponding temperature control valve according to the temperature signal fed back by the temperature sensor so as to adjust the flow of the cooling medium of the corresponding circulating pipeline.
Preferably, the thermo valve is a three-way valve having two inlets and one outlet;
the outlet of the temperature control valve positioned in the first circulating pipeline is connected with the cooling inlet of the fuel cell system, and the two inlets are respectively connected with the heat exchange outlet of the heat exchanger and the cooling outlet of the fuel cell system;
and an outlet of the temperature control valve positioned in the second circulation pipeline is connected with a cooling inlet of the lithium battery system, and the two inlets are respectively connected with a heat exchange outlet of the heat exchanger and a cooling outlet of the lithium battery system.
Preferably, the heat exchange medium in the heat exchange pipeline is water or antifreeze.
Preferably, the output end of the liquid storage tank is connected with a discharge pipeline, and the heat exchange medium is output outwards through the discharge pipeline.
Preferably, an air-cooled radiator is arranged on the discharge pipeline, and the heat exchange medium of the discharge pipeline is radiated through the air-cooled radiator;
the output end of the discharge pipeline is connected with the liquid storage tank and used for conveying the heat exchange medium subjected to heat dissipation of the air-cooled radiator back to the liquid storage tank.
Preferably, the liquid storage tank is connected with the input end of the heat exchange pipeline, and the heat exchange medium after heat dissipation, which is returned to the liquid storage tank, enters the heat exchange pipeline.
Preferably, the input end of the heat exchange pipeline is connected with a liquid supply system for providing heat exchange medium, and the liquid supply system is the liquid storage tank or an external water supply device.
Preferably, a liquid level meter is arranged on the liquid storage tank.
Preferably, the heat exchanger comprises: the first heat exchanger is connected with the first circulating pipeline, and the second heat exchanger is connected with the second circulating pipeline.
The beneficial effects of the invention are as follows:
the invention can store the heat generated in the operation of the fuel cell system and the lithium cell system, and use the stored heat under proper conditions; and by monitoring the temperature of the cooling medium and implementing a corresponding cooling strategy, the cooling modes of the fuel cell system and the lithium battery system can be independently controlled.
Drawings
FIG. 1 is a schematic diagram of a thermal management system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a thermal management system according to another embodiment of the present invention.
Detailed Description
A thermal management system in accordance with the present invention is described in further detail below with reference to the drawings and detailed description.
Referring to fig. 1 and 2, a thermal management system according to the present invention includes: a first circulation line arranged between the fuel cell system 1 and the heat exchanger 3, a second circulation line arranged between the lithium cell system 2 and the heat exchanger 3, a heat exchange line connected with the heat exchanger 3, an output end of which is provided with a liquid reservoir 4, and a controller (not shown in the figure). The heat in the fuel cell system 1 and the lithium cell system 2 is respectively subjected to heat exchange with the heat exchange medium in the heat exchange pipeline through the cooling medium in the first circulation pipeline and the second circulation pipeline, the heat exchange medium after heat exchange is output to the liquid storage tank 4, and the liquid storage tank 4 has a heat preservation function and is used for storing the heat exchange medium after heat exchange; the first circulating pipeline and the second circulating pipeline are respectively provided with a temperature control valve, a motor pump and a temperature sensor which are connected with the controller circuit; the controller can control the power of the corresponding motor pump and the opening of the corresponding temperature control valve according to the temperature signal fed back by the temperature sensor so as to adjust the flow of the cooling medium in the corresponding circulating pipeline.
The heat exchanger 3 comprises a first heat exchanger 31 and a second heat exchanger 32, wherein the first heat exchanger 31 is connected with a first circulation pipeline, and the second heat exchanger 32 is connected with a second circulation pipeline. The first circulation line is provided with a first motor pump 11, a first temperature sensor 12 and a first thermo valve 13. The first circulation pipeline is used for providing heat dissipation for the fuel cell system 1, and can take away heat generated by the fuel cell system 1 during operation, so as to prevent the internal temperature of the fuel cell system 1 from being too high. The first temperature sensor 12 is installed at the cooling inlet 72 of the fuel cell system 1, the first temperature sensor 12 can feed back the temperature of the cooling medium in the first circulation line to the controller, and the controller can control the opening of the first circulation line according to the real-time temperature to adjust the opening of the first temperature control valve 13 and control the working efficiency (power) of the first motor pump 11, thereby adjusting the flow rate of the cooling medium in the first circulation line. Likewise, the second circulation line is provided with a second motor pump 21, a second temperature sensor 22, and a second thermo valve 23. The second circulation pipeline is used for providing heat dissipation for the lithium battery system 2 and taking away heat generated by the lithium battery system 2 during operation, so that the internal temperature of the lithium battery system 2 is prevented from being too high. The second temperature sensor 22 is installed at the cooling inlet 82 of the lithium battery system 2, the second temperature sensor 22 is in circuit connection with the controller, and the controller can control the second temperature control valve 23 to adjust the opening of the second circulation pipeline and control the working efficiency (power) of the second motor pump 21 according to the real-time temperature of the cooling medium in the second circulation pipeline detected by the second temperature sensor 22, so as to adjust the flow rate of the cooling medium in the second circulation pipeline.
The first temperature control valve 13 and the second temperature control valve 23 are three-way valves, and each temperature control valve has two cooling medium inlets and one cooling medium outlet; the controller may control both inlets to be opened simultaneously, or to open one of the inlets separately. The outlet OUT1 of the first thermo valve 13 IN the first circulation line is connected to the cooling inlet 72 of the fuel cell system 1, one inlet IN11 is connected to the cooling outlet 71 of the fuel cell system and simultaneously to the heat exchanging inlet 73 of the first heat exchanger 31, and the other inlet IN12 is connected to the heat exchanging outlet 74 of the first heat exchanger 31. When the inlet IN11 is opened alone (i.e., when the inlet IN12 is closed), the cooling medium IN the first circulation line passes through the first thermo valve 13 from the cooling outlet 71 of the fuel cell system 1 to the cooling inlet 72, which is referred to as a small cycle at this time, and the cooling medium IN the first circulation line does not pass through the first heat exchanger 31 to exchange heat, so that the small cycle is suitable for use IN a case where the amount of heat dissipation is small. When the inlet IN12 is opened independently (i.e., when the inlet IN11 is closed), the cooling medium of the first circulation line enters the heat exchange inlet 73 of the first heat exchanger 31 from the cooling outlet 71 of the fuel cell system 1, brings heat IN the fuel cell system 1 into the first heat exchanger 31, exchanges heat with the heat exchange line IN the first heat exchanger 31, and the cooling medium subjected to heat exchange is discharged from the heat exchange outlet 74 through the first thermostatic valve 13 into the cooling inlet 72, which is referred to as a large cycle at this time, and the cooling medium is entirely subjected to heat exchange through the first heat exchanger 31, so that the large cycle is suitable for use IN a case where the heat dissipation capacity is large. When the inlet IN11 and the inlet IN12 are simultaneously opened, the cooling medium portion exchanges heat through the first heat exchanger 31, which is called a medium cycle, and thus the medium cycle is suitable for use IN a case where heat dissipation is medium.
Similarly, the outlet OUT2 of the second thermo valve 23 located IN the second circulation line is connected to the cooling inlet 82 of the lithium battery system 2, the cooling outlet 81 of the lithium battery system 2 is connected to the heat exchanging inlet 83 of the second heat exchanger 32 and the inlet IN21 of the second thermo valve 23, and the other inlet IN22 of the second thermo valve 23 is connected to the heat exchanging outlet 84 of the second heat exchanger. The two inlets IN21 and IN22 of the second thermo valve 23 are simultaneously opened to be medium circulation, the inlet IN21 is separately opened to be small circulation, the inlet IN22 is separately opened to be large circulation, and the circulation route and the heat dissipation effect of the relevant cooling medium are the same as those of the first circulation pipeline.
Part of the functions of the controller are to control the opening and closing states of two inlets of the three-way valve IN the circulation pipeline according to the temperature of the circulation pipeline, when the temperature of the cooling medium IN the circulation pipeline is high, the three-way valve is controlled to independently open the inlets connected with the heat exchanger 3, such as the inlet IN12 and the inlet IN22, when the temperature of the cooling medium is low, the three-way valve is controlled to open the inlets disconnected with the heat exchanger 3, such as the inlet IN11 and the inlet IN21, and when the temperature of the cooling medium is between low and high, the three-way valve is controlled to simultaneously open the two inlets. In the fuel cell system 1 and the lithium battery system 2 described above, the controller can switch between the small cycle, the large cycle, and the medium cycle based on the temperature feedback from the first temperature sensor 12 and the second temperature sensor 22, respectively, and can control the opening of the temperature control valve in real time. And controlling the working efficiency of the motor pump according to the temperature feedback of the temperature sensor, and when the temperature is high, improving the working efficiency of the motor pump, accelerating the circulation of the cooling medium, namely improving the flow of the cooling medium. The larger the flow rate is, the higher the heat radiation efficiency is, and the temperature of the cooling medium entering the fuel cell system 1 and the lithium battery system 2 can be controlled in real time, so that thermal runaway is prevented. For example, when the temperature fed back by the first temperature sensor 12 is too high, the controller may increase the operation efficiency of the first motor pump 11 and/or increase the opening degree of the first thermo valve 13 to decrease the temperature of the cooling medium, and conversely when the temperature fed back by the first temperature sensor 12 is too low, the controller may decrease the operation efficiency of the first motor pump 11 and/or decrease the opening degree of the first thermo valve 13.
After the cooling medium in the first circulation line and the second circulation line exchanges heat with the heat exchange medium in the heat exchange line, the temperature of the heat exchange medium increases and is discharged into the liquid reservoir 4. Referring to fig. 1, the liquid storage tank 4 in this embodiment has two inlets 91 and 92 connected to heat exchange pipes, and an outlet 93 connected to a discharge pipe, which can discharge the heat exchange medium with high temperature for direct use. Wherein the discharge line is provided with a first flowmeter 62, a third motor pump 61 and a first ball valve 63. The third motor pump 61 is used for pumping the heat exchange medium out of the liquid storage tank 4, the first flowmeter 62 is used for measuring the flow rate of the heat exchange medium, and the first ball valve 63 can control the on-off of the discharge pipeline. When the heat exchange medium is water, the water can be municipal water, enters the heat exchanger through the heat exchange pipeline, exchanges heat with the cooling medium, is discharged into the liquid storage tank 4, and then outputs hot water outwards through the discharge pipeline.
Referring to fig. 2, in a preferred embodiment, the reservoir 4 has two outlets 93, 95, wherein the outlet 93 is connected to a discharge line and the other outlet 95 is connected to an input of a heat exchange line for providing the heat exchange line with a recyclable heat exchange medium, which may be a water-based antifreeze solution. The third motor pump 61 and the air-cooled radiator 64 are arranged on the discharge pipeline, and the air-cooled radiator 64 can output hot air outwards, cool down the recyclable heat exchange medium and re-discharge the recyclable heat exchange medium into the liquid storage tank 4 through the heat exchange medium inlet 94.
It should be noted that the input end of the heat exchange pipeline is connected to a liquid supply system for providing the heat exchange medium, where the liquid supply system may be a municipal water supply system in the example of fig. 1 or a liquid storage tank 4 in the example of fig. 2. A filter 52, a fourth motor pump 51 and a second flowmeter 54 are arranged between the input end of the heat exchange pipeline and the liquid supply system. The fourth motor pump 51 is used for delivering heat exchange medium to the heat exchange line, the second flowmeter 62 is used for metering the flow of heat exchange medium, and the filter 52 is used for filtering the heat exchange medium entering the heat exchange line. When the heat exchange medium is municipal water, a second ball valve 53 can also be installed at the municipal water interface to control whether municipal water is connected or not. After the heat exchange medium enters the heat exchange pipeline, the heat exchange medium is divided into two paths through an inlet IN3 of the third three-way valve 55, wherein one path of outlet OUT31 enters the first heat exchanger 31, and the other path of outlet OUT enters the second heat exchanger 32.
Further, a third temperature sensor 41, a liquid level meter 42 and an air-permeable valve 43 are arranged on the liquid storage tank 4. The third temperature sensor 41 is used for monitoring the temperature in the liquid storage tank 4, the liquid level meter 42 is used for observing the liquid level height in the liquid storage tank 4, and the air permeable valve 43 is used for balancing the pressure in the liquid storage tank 4, so that the sealing effect can be achieved.
In summary, the invention can store the heat generated in the operation of the fuel cell system and the lithium cell system, and use the stored heat under proper conditions; and by monitoring the temperature of the cooling medium and implementing a corresponding cooling strategy, the cooling modes of the fuel cell system and the lithium battery system can be independently controlled.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (9)
1. A thermal management system for thermal control and management of a fuel cell system and a lithium cell system, comprising:
a heat exchanger;
a first circulation line provided between the fuel cell system and the heat exchanger, in which a cooling medium is provided;
the second circulation pipeline is arranged between the lithium battery system and the heat exchanger, and a cooling medium is arranged in the second circulation pipeline;
the heat exchange pipeline is connected with the heat exchanger, and a heat exchange medium arranged in the heat exchanger exchanges heat with cooling mediums in the first circulation pipeline and the second circulation pipeline in the heat exchanger; the output end of the heat exchange pipeline is provided with a liquid storage tank which is used for storing heat exchange media subjected to heat exchange in the heat exchange pipeline;
the first circulating pipeline and the second circulating pipeline are respectively provided with a temperature control valve, a motor pump and a temperature sensor which are connected with a controller circuit;
the controller can control the power of the corresponding motor pump and the opening of the corresponding temperature control valve according to the temperature signal fed back by the temperature sensor so as to adjust the flow of the cooling medium of the corresponding circulating pipeline.
2. The thermal management system of claim 1, wherein said thermo valve is a three-way valve having two inlets and one outlet;
the outlet of the temperature control valve positioned in the first circulating pipeline is connected with the cooling inlet of the fuel cell system, and the two inlets are respectively connected with the heat exchange outlet of the heat exchanger and the cooling outlet of the fuel cell system;
and an outlet of the temperature control valve positioned in the second circulation pipeline is connected with a cooling inlet of the lithium battery system, and the two inlets are respectively connected with a heat exchange outlet of the heat exchanger and a cooling outlet of the lithium battery system.
3. The thermal management system of claim 1, wherein the heat exchange medium in the heat exchange line is water or antifreeze.
4. A thermal management system according to claim 3, wherein the outlet of the reservoir is connected to a discharge line through which the heat exchange medium is discharged.
5. The thermal management system of claim 4, wherein the exhaust pipe is provided with an air-cooled radiator, and the heat exchange medium in the exhaust pipe is radiated by the air-cooled radiator;
the output end of the discharge pipeline is connected with the liquid storage tank and used for conveying the heat exchange medium subjected to heat dissipation of the air-cooled radiator back to the liquid storage tank.
6. The thermal management system of claim 5, wherein said reservoir is connected to an input of said heat exchange conduit, and said heat-dissipating heat exchange medium returned to said reservoir enters said heat exchange conduit.
7. The thermal management system of claim 1, wherein the heat exchange conduit has an input connected to a liquid supply system providing a heat exchange medium, the liquid supply system being the liquid reservoir or an external water supply.
8. The thermal management system of claim 7, wherein a level gauge is disposed on the reservoir.
9. The thermal management system of claim 1, wherein the heat exchanger comprises: the first heat exchanger is connected with the first circulating pipeline, and the second heat exchanger is connected with the second circulating pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311118434.7A CN117117235A (en) | 2023-08-31 | 2023-08-31 | Thermal management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311118434.7A CN117117235A (en) | 2023-08-31 | 2023-08-31 | Thermal management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117117235A true CN117117235A (en) | 2023-11-24 |
Family
ID=88798052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311118434.7A Pending CN117117235A (en) | 2023-08-31 | 2023-08-31 | Thermal management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117117235A (en) |
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2023
- 2023-08-31 CN CN202311118434.7A patent/CN117117235A/en active Pending
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