CN111933968A - Fuel cell cooling system and control method thereof - Google Patents
Fuel cell cooling system and control method thereof Download PDFInfo
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- CN111933968A CN111933968A CN202010650032.1A CN202010650032A CN111933968A CN 111933968 A CN111933968 A CN 111933968A CN 202010650032 A CN202010650032 A CN 202010650032A CN 111933968 A CN111933968 A CN 111933968A
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- temperature
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- cooling water
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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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- 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
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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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
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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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a fuel cell cooling system and a control method thereof, wherein the fuel cell cooling system comprises: the device comprises a water tank, a cooling water supply device, a heat exchange device, a control device, a first temperature sensor, a heat dissipation device, a second temperature sensor and a cooling water circulating device; the first temperature sensor, the second temperature sensor, the cooling water supply device, the heat dissipation device and the cooling water circulation device are respectively connected with the control device; a second water outlet of the heat exchange device is connected with a water inlet of the heat dissipation device, and a water outlet of the heat dissipation device is connected with a water inlet of the cooling water circulation device; the water outlet of the cooling water circulating device is connected with the second water inlet of the heat exchange device; the first temperature sensor is arranged on a pipeline between the heat exchange device and the heat dissipation device, and the second temperature sensor is arranged on a pipeline between the heat dissipation device and the cooling water circulation device. The embodiment of the invention can increase the control margin of the temperature of the fuel cell.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a fuel cell cooling system and a control method thereof.
Background
In the field of water-cooled fuel cell technology, the temperature of the fuel cell has a very important influence on the operating efficiency, the operating performance degradation, and the like of the fuel cell. In order to maintain the temperature of the fuel cell in the optimum temperature range, most of the current solutions use the following method: the cooling water circulation loop of the fuel cell cooling system exchanges heat with the outside to carry away heat generated by the fuel cell reaction. Specifically, the fuel cell cooling water transfers heat to a heat exchange loop through a heat exchanger, and the heat exchange loop dissipates heat through a radiator to realize temperature control of the fuel cell. The cooling system of the fuel cell has small heat which can be taken away, namely the control margin of the temperature of the fuel cell is small, and under extreme condition environments such as a high-temperature environment exceeding 45 ℃, the temperature control is easy to fail to achieve an ideal control effect, so that the automatic shutdown of the fuel cell or the low power generation rate are caused.
Disclosure of Invention
The invention aims to provide a fuel cell cooling system and a control method thereof, which aim to solve the technical problem that the existing fuel cell cooling system has small control margin on temperature so as to increase the control margin.
In order to solve the above technical problem, in a first aspect, an embodiment of the present invention provides a fuel cell cooling system, including:
the device comprises a water tank, a cooling water supply device, a heat exchange device, a control device, a first temperature sensor, a heat dissipation device, a second temperature sensor and a cooling water circulating device; the first temperature sensor, the second temperature sensor, the cooling water supply device, the heat dissipation device and the cooling water circulation device are respectively connected with a control device;
the water outlet of the water tank is connected with the water inlet of the galvanic pile, and the water outlet of the galvanic pile is connected with the water inlet of the cooling water supply device;
the cooling water supply device is connected with a first water inlet of the heat exchange device, and a first water outlet of the heat exchange device is connected with a water inlet of the water tank;
the second water outlet of the heat exchange device is connected with the water inlet of the heat dissipation device, and the water outlet of the heat dissipation device is connected with the water inlet of the cooling water circulation device;
the water outlet of the cooling water circulating device is connected with the second water inlet of the heat exchange device;
the first temperature sensor is arranged on a pipeline between the heat exchange device and the heat dissipation device, and the second temperature sensor is arranged on a pipeline between the heat dissipation device and the cooling water circulation device.
Preferably, the heat dissipation device is a heat sink.
Preferably, the cooling water circulation device is a water pump.
Preferably, the cooling water supply device is a water pump.
Preferably, the fuel cell cooling system further includes: the first end of the first temperature transmitter is connected with the first temperature sensor, and the second end of the first temperature transmitter is connected with the control device; and the first end of the second temperature transmitter is connected with the second temperature sensor, and the second end of the second temperature transmitter is connected with the control device.
In a second aspect, an embodiment of the present invention further provides a control method for the fuel cell cooling system described above, which is executed by the control device and includes:
when the temperature detected by the first temperature sensor is not equal to the first target temperature, the PID controls the cooling water circulating device until the temperature detected by the first temperature sensor is equal to the first target temperature;
when the temperature detected by the second temperature sensor is not equal to the second target temperature, the PID controls the heat sink until the temperature detected by the second temperature sensor is equal to the second target temperature.
Preferably, the first target temperature is calculated according to the rated power generation of the galvanic pile.
Preferably, the second target temperature is calculated according to the real-time power generation power of the galvanic pile.
In summary, the embodiment of the invention has the following beneficial effects:
the fuel cell cooling system provided by the embodiment of the invention comprises: the device comprises a water tank, a cooling water supply device, a heat exchange device, a control device, a first temperature sensor, a heat dissipation device, a second temperature sensor and a cooling water circulating device; the first temperature sensor, the second temperature sensor, the cooling water supply device, the heat dissipation device and the cooling water circulation device are respectively connected with a control device; the water outlet of the water tank is connected with the water inlet of the galvanic pile, and the water outlet of the galvanic pile is connected with the water inlet of the cooling water supply device; the cooling water supply device is connected with a first water inlet of the heat exchange device, and a first water outlet of the heat exchange device is connected with a water inlet of the water tank; the second water outlet of the heat exchange device is connected with the water inlet of the heat dissipation device, and the water outlet of the heat dissipation device is connected with the water inlet of the cooling water circulation device; the water outlet of the cooling water circulating device is connected with the second water inlet of the heat exchange device; the first temperature sensor is arranged on a pipeline between the heat exchange device and the heat dissipation device, and the second temperature sensor is arranged on a pipeline between the heat dissipation device and the cooling water circulation device. According to the embodiment of the invention, the temperature of the cooling water is controlled by the heat dissipation device and the cooling water circulation device, and compared with a mode of controlling the temperature of the cooling water only by a radiator, the control margin is greatly increased, so that the control margin of the temperature of the fuel cell is also greatly increased. In addition, the embodiment of the invention can reduce the volume of the heat dissipation device.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic composition diagram of a fuel cell cooling system according to an embodiment of the present invention.
Fig. 2 is a flowchart of a control method for the fuel cell cooling system of fig. 1 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.
Referring to fig. 1, the connection lines without arrows indicate the electrical connection, and the connection lines with arrows indicate the flow direction of water. An embodiment of the present invention provides a fuel cell cooling system, including:
the water tank 8, the cooling water supply device 2, the heat exchange device 3, the control device 9, the first temperature sensor 4, the heat dissipation device 5, the second temperature sensor 6 and the cooling water circulation device 7; the first temperature sensor 4, the second temperature sensor 6, the cooling water supply device 2, the heat sink 5, and the cooling water circulation device 7 are connected to a control device 9, respectively;
the water outlet of the water tank 8 is connected with the water inlet of the galvanic pile 1, and the water outlet of the galvanic pile 1 is connected with the water inlet of the cooling water supply device 2;
the cooling water supply device 2 is connected with a first water inlet of the heat exchange device 3, and a first water outlet of the heat exchange device 3 is connected with a water inlet of the water tank 8;
a second water outlet of the heat exchange device 3 is connected with a water inlet of the heat dissipation device 5, and a water outlet of the heat dissipation device 5 is connected with a water inlet of the cooling water circulation device 7;
the water outlet of the cooling water circulating device 7 is connected with the second water inlet of the heat exchange device 3;
the first temperature sensor 4 is arranged on a pipeline between the heat exchange device 3 and the heat dissipation device 5, and the second temperature sensor 6 is arranged on a pipeline between the heat dissipation device 5 and the cooling water circulation device 7.
In the embodiment of the present invention, the cooling water circulation device 7 is used for controlling the flow rate of the cooling water, and the heat dissipation device 5 is used for controlling the flow rate of the air so as to control the temperature of the cooling water, thereby controlling the temperature of the reaction environment of the stack 1 and further controlling the temperature of the fuel cell. Specifically, the control of the temperature of the cooling water is generally achieved by increasing the flow rate of the cooling water and increasing the flow rate of air, so as to achieve the temperature control of the reaction environment of the stack 1, and thus the temperature control of the fuel cell.
For ease of understanding, the following describes the working principle of embodiments of the present invention:
after the cooling water of the water tank 8 flows into the fuel cell of the electric pile 1, the cooling water absorbs the heat generated by the fuel cell reaction, the temperature of the cooling water rises, in order to reduce the temperature of the cooling water flowing out from the water outlet of the electric pile 1, the cooling water supply device 2 inputs the cooling water into the heat exchanging device 3, the heat radiating device 5 and the cooling water circulating device 7 to reduce the temperature of the cooling water, the control device 9 controls the cooling water circulating device 7 according to the temperature detected by one temperature sensor, and controls the temperature of the cooling water by controlling the heat radiating device 5 according to the temperature detected by the second temperature sensor 6, so that the temperature of the cooling water re-entering the electric pile 1 can be maintained at the optimum temperature for the electric pile 1 reaction, and the temperature of the fuel cell can be further maintained at the optimum temperature.
Compared with the prior art that the temperature of the cooling water is controlled only by the radiator 5, the control margin is greatly increased, and the control margin of the temperature of the fuel cell is also greatly increased.
In addition, the embodiment of the invention can reduce the volume of the heat dissipation device 5.
In one preferred embodiment, the heat sink 5 is a heat sink 5, and the heat sink 5 has a fan.
In one preferred embodiment, the cooling water circulation device 7 is a water pump. It should be understood that the cooling circulation device may be other devices besides the water pump, which can adjust the flow rate of the cooling water, and the embodiment of the present invention is not limited herein.
In one preferred embodiment, the cooling water supply device 2 is a water pump.
Preferably, the fuel cell cooling system further includes: the first end of the first temperature transmitter is connected with the first temperature sensor 4, and the second end of the first temperature transmitter is connected with the control device 9; the first end of the second temperature transmitter is connected with the second temperature sensor 6, and the second end of the second temperature transmitter is connected with the control device 9.
Referring to fig. 2, in a second aspect, an embodiment of the present invention further provides a control method for the fuel cell cooling system, which is executed by the control device 9, and includes:
when the temperature detected by the first temperature sensor 4 is not equal to the first target temperature, the PID controls the cooling water circulation device 7 until the temperature detected by the first temperature sensor 4 is equal to the first target temperature;
when the temperature detected by the second temperature sensor 6 is not equal to the second target temperature, the PID controls the heat sink 5 until the temperature detected by the second temperature sensor 6 is equal to the second target temperature.
In the embodiment of the present invention, the cooling water circulation device 7 is controlled until the temperature detected by the first temperature sensor 4 is equal to the first target temperature, and the heat sink 5 is controlled until the temperature detected by the second temperature sensor 6 is equal to the second target temperature, so that the control margin is greatly increased, and thus the control margin of the temperature of the fuel cell is also greatly increased, compared with the method in which the temperature of the cooling water is controlled only by the radiator 5. In addition, the embodiment of the invention can reduce the volume of the heat dissipation device 5.
As an example of the embodiment of the present invention, the first target temperature is calculated according to the rated power of the stack 1.
As an example of the embodiment of the present invention, the second target temperature is calculated according to the real-time generated power of the stack 1.
In the embodiment of the invention, the real-time performance and effectiveness of temperature control are improved by obtaining the second target temperature according to the real-time power generation power of the galvanic pile 1.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (8)
1. A fuel cell cooling system, comprising:
the device comprises a water tank, a cooling water supply device, a heat exchange device, a control device, a first temperature sensor, a heat dissipation device, a second temperature sensor and a cooling water circulating device; the first temperature sensor, the second temperature sensor, the cooling water supply device, the heat dissipation device and the cooling water circulation device are respectively connected with a control device;
the water outlet of the water tank is connected with the water inlet of the galvanic pile, and the water outlet of the galvanic pile is connected with the water inlet of the cooling water supply device;
the cooling water supply device is connected with a first water inlet of the heat exchange device, and a first water outlet of the heat exchange device is connected with a water inlet of the water tank;
the second water outlet of the heat exchange device is connected with the water inlet of the heat dissipation device, and the water outlet of the heat dissipation device is connected with the water inlet of the cooling water circulation device;
the water outlet of the cooling water circulating device is connected with the second water inlet of the heat exchange device;
the first temperature sensor is arranged on a pipeline between the heat exchange device and the heat dissipation device, and the second temperature sensor is arranged on a pipeline between the heat dissipation device and the cooling water circulation device.
2. The fuel cell cooling system according to claim 1, wherein the heat dissipation device is a radiator.
3. The cooling system for a fuel cell according to claim 1, wherein the cooling water circulation device is a water pump.
4. The cooling system for a fuel cell according to claim 1, wherein the cooling water supply device is a water pump.
5. The fuel cell cooling system according to claim 1, further comprising: the first end of the first temperature transmitter is connected with the first temperature sensor, and the second end of the first temperature transmitter is connected with the control device; and the first end of the second temperature transmitter is connected with the second temperature sensor, and the second end of the second temperature transmitter is connected with the control device.
6. A control method for a fuel cell cooling system according to any one of claims 1 to 5, executed by the control device, characterized by comprising:
when the temperature detected by the first temperature sensor is not equal to the first target temperature, the PID controls the cooling water circulating device until the temperature detected by the first temperature sensor is equal to the first target temperature;
when the temperature detected by the second temperature sensor is not equal to the second target temperature, the PID controls the heat sink until the temperature detected by the second temperature sensor is equal to the second target temperature.
7. The control method of a fuel cell cooling system according to claim 6, wherein the first target temperature is calculated from a rated power generation power of the stack.
8. The control method of a fuel cell cooling system according to claim 6, wherein the second target temperature is calculated from a real-time generated power of the stack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010650032.1A CN111933968B (en) | 2020-07-08 | 2020-07-08 | Fuel cell cooling system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010650032.1A CN111933968B (en) | 2020-07-08 | 2020-07-08 | Fuel cell cooling system and control method thereof |
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| CN111933968A true CN111933968A (en) | 2020-11-13 |
| CN111933968B CN111933968B (en) | 2023-10-03 |
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| CN202010650032.1A Active CN111933968B (en) | 2020-07-08 | 2020-07-08 | Fuel cell cooling system and control method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848349A (en) * | 2017-03-10 | 2017-06-13 | 同济大学 | A kind of distributed fuel cell heat management system |
| CN206574801U (en) * | 2017-03-10 | 2017-10-20 | 同济大学 | A kind of distributed fuel cell heat management system |
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2020
- 2020-07-08 CN CN202010650032.1A patent/CN111933968B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848349A (en) * | 2017-03-10 | 2017-06-13 | 同济大学 | A kind of distributed fuel cell heat management system |
| CN206574801U (en) * | 2017-03-10 | 2017-10-20 | 同济大学 | A kind of distributed fuel cell heat management system |
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| CN111933968B (en) | 2023-10-03 |
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