CN113471475B - Fuel cell and method for cooling fuel cell - Google Patents
Fuel cell and method for cooling fuel cell Download PDFInfo
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- CN113471475B CN113471475B CN202110593322.1A CN202110593322A CN113471475B CN 113471475 B CN113471475 B CN 113471475B CN 202110593322 A CN202110593322 A CN 202110593322A CN 113471475 B CN113471475 B CN 113471475B
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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
- H01M8/04044—Purification of heat exchange media
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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
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
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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
- H01M8/04358—Temperature; Ambient temperature of the coolant
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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
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04417—Pressure; Ambient pressure; Flow of the coolant
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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
- H01M8/0444—Concentration; Density
- H01M8/04485—Concentration; Density of the coolant
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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
- H01M8/04723—Temperature of the coolant
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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
- H01M8/04746—Pressure; Flow
- H01M8/04768—Pressure; Flow of the coolant
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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
- H01M8/04955—Shut-off or shut-down of 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention discloses a fuel cell and a cooling method of the fuel cell, the fuel cell comprises an electric pile and a cooling system, the cooling system comprises a main liquid inlet pipeline, a main liquid outlet pipeline, an adjustable shunt part, a first temperature regulating branch for improving the temperature of cooling liquid and a second temperature regulating branch for reducing the temperature of the cooling liquid, one end of the main liquid inlet pipeline and one end of the main liquid outlet pipeline are respectively communicated with the electric pile, the adjustable shunt part is communicated with the other end of the main liquid outlet pipeline, and the first temperature regulating branch and the second temperature regulating branch are connected between the other end of the main liquid inlet pipeline and the adjustable shunt part in parallel. When the fuel cell operates at a low temperature, the first temperature adjusting branch is communicated with the main liquid inlet pipeline and the main liquid outlet pipeline by the adjustable flow dividing piece and heats the cooling liquid, and when the fuel cell operates at a high temperature, the second temperature adjusting branch is communicated with the main liquid inlet pipeline and the main liquid outlet pipeline by the adjustable flow dividing piece and cools the cooling liquid, so that the fuel cell is maintained at the optimal working temperature, the performance of the fuel cell is ensured, and the service life of the fuel cell is prolonged.
Description
Technical Field
The present invention relates to the field of fuel cell technology, and in particular, to a fuel cell and a cooling method for the fuel cell.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
The stack generates a large amount of heat during operation of the fuel cell, and the increase in the amount of heat generated by the stack adversely affects the performance and the service life of the fuel cell. In the prior art, a cooling system is usually arranged on a fuel cell, and the cooling system is used for cooling an electric pile through heat exchange with the electric pile so as to ensure the formation and the service life of the fuel cell.
However, the optimal operating temperature of the stack is 70 ℃ to 80 ℃, and when the fuel cell is started at a low temperature or operates in a low-temperature environment, the cooling system has a function of cooling the stack, so that the stack cannot be maintained at the optimal operating temperature, and the performance of the fuel cell is affected.
Disclosure of Invention
The object of the present invention is to at least solve the problem of how to maintain the fuel cell at an optimum operating temperature. The purpose is realized by the following technical scheme:
a first aspect of the present invention proposes a fuel cell comprising:
a galvanic pile;
cooling system, cooling system is including main liquid inlet pipe way, main liquid outlet pipe way, adjustable reposition of redundant personnel piece, the first branch road that adjusts the temperature that is used for improving the coolant liquid temperature, the second branch road that adjusts the temperature that is used for reducing the coolant liquid temperature, main liquid inlet pipe way one end with main liquid outlet pipe way one end respectively with the galvanic pile intercommunication, adjustable reposition of redundant personnel piece with main liquid outlet pipe way other end intercommunication, first branch road that adjusts the temperature with the second branch road that adjusts the temperature is parallelly connected main liquid inlet pipe way the other end with between the adjustable reposition of redundant personnel piece.
According to the fuel cell of the invention, a first temperature regulating branch and a second temperature regulating branch in a cooling system are respectively connected in parallel between a main liquid inlet pipeline and a main liquid outlet pipeline, an adjustable shunt part is arranged on the main liquid outlet pipeline, the temperature regulating branch flowing out from the main liquid outlet pipeline is controlled to return to the main liquid inlet pipeline through which temperature regulating branch the cooling liquid flows out, when the fuel cell is in low-temperature operation or low-temperature start, the adjustable shunt part respectively communicates the first temperature regulating branch with the main liquid inlet pipeline and the main liquid outlet pipeline, the first temperature regulating branch is used for heating the cooling liquid, when the fuel cell is in a high-temperature operation environment (including room temperature), the adjustable shunt part respectively communicates the second temperature regulating branch with the main liquid inlet pipeline and the main liquid outlet pipeline, the cooling liquid is cooled by using the second temperature regulating branch, and the cooperation of the adjustable shunt part, the first temperature regulating branch and the second temperature regulating branch, the fuel cell is effectively maintained at the optimal working temperature, the performance of the fuel cell is ensured, and the service life of the fuel cell is prolonged.
In addition, the fuel cell according to the present invention may have the following additional technical features:
in some embodiments of the invention, the cooling system further comprises:
the driving piece is respectively communicated with the other end of the main liquid inlet pipeline, the first temperature regulating branch and the second temperature regulating branch and is used for driving cooling liquid to circulate;
and the filtering piece is arranged on the main liquid inlet pipeline and is used for filtering cooling liquid.
In some embodiments of the present invention, the first temperature regulating branch comprises:
one end of the first branch pipeline is communicated with the adjustable flow dividing piece, and the other end of the first branch pipeline is communicated with the driving piece;
and the heating element is arranged on the first branch pipeline and used for heating the cooling liquid passing through the first branch pipeline.
In some embodiments of the present invention, the second temperature regulating branch comprises:
one end of the second branch pipeline is communicated with the adjustable flow dividing piece, and the other end of the second branch pipeline is communicated with the driving piece;
and the cooling part is arranged on the second branch pipeline and used for cooling the cooling liquid passing through the second branch pipeline.
In some embodiments of the invention, the cooling system further comprises:
a control module electrically connected to the adjustable shunt member, the heating member, and the cooling member, respectively;
the temperature acquisition module is electrically connected with the control module and is used for acquiring the temperature of the cooling liquid;
the pressure acquisition module is electrically connected with the control module and is used for acquiring the pressure of the cooling liquid;
the flow acquisition module is electrically connected with the control module and is used for acquiring the flow of the cooling liquid;
and the concentration acquisition module is electrically connected with the control module and is used for acquiring the concentration of ions in the cooling liquid.
In some embodiments of the invention, the temperature acquisition module comprises:
the first temperature sensor is arranged on the main liquid inlet pipeline and used for collecting the temperature of the cooling liquid passing through the main liquid inlet pipeline;
the second temperature sensor is arranged on the main liquid outlet pipeline and used for collecting the temperature of the cooling liquid passing through the main liquid outlet pipeline;
and/or the pressure acquisition module comprises:
the first pressure sensor is arranged on the main liquid inlet pipeline and used for collecting the pressure of the cooling liquid passing through the main liquid inlet pipeline;
the second pressure sensor is arranged on the main liquid outlet pipeline and used for collecting the pressure of the cooling liquid passing through the main liquid outlet pipeline;
and/or the flow collecting module is a flowmeter which is arranged on the main liquid inlet pipeline;
and/or the concentration acquisition module is a conductivity meter which is arranged on the main liquid outlet pipeline.
In some embodiments of the invention, the cooling system further comprises:
a communication member, which is arranged on the second branch in a communication manner and is positioned between the driving member and the cooling member;
one end of the first supply pipe is communicated with the communicating piece;
the supply tank is communicated with the other end of the first supply pipe and is used for storing cooling liquid;
the first control valve is arranged on the first supply pipe, is electrically connected with the control module and is used for controlling the on-off of the first supply pipe.
In some embodiments of the invention, the cooling system further comprises:
a second supply pipe, one end of which is communicated with the supply tank;
a supply device, which is communicated with the other end of the second supply pipe and is used for supplying cooling liquid to the supply tank;
and the second control valve is arranged on the second supply pipe, is electrically connected with the control module and is used for controlling the on-off of the second supply pipe.
A second aspect of the present invention proposes a cooling method of a fuel cell, the cooling method of a fuel cell being implemented according to the fuel cell as described above, the cooling method of a fuel cell comprising:
acquiring the current temperature of the cooling liquid;
controlling the adjustable flow dividing piece to communicate the main liquid outlet pipeline with the first temperature adjusting branch circuit according to the condition that the current temperature of the cooling liquid is lower than a first preset temperature;
controlling the adjustable flow dividing piece to be kept in a current state according to the fact that the current temperature of the cooling liquid is greater than or equal to a first preset temperature and the current temperature of the cooling liquid is less than or equal to a second preset temperature, wherein the second preset temperature is greater than the first preset temperature;
and controlling the adjustable flow dividing piece to communicate the main liquid outlet pipeline with the second temperature adjusting branch according to the fact that the current temperature of the cooling liquid is higher than the second preset temperature.
According to the cooling method of the fuel cell, the control module compares the acquired current temperature with the first preset temperature and the second preset temperature, so as to judge the working environment of the cooling liquid.
When the current temperature of the fuel cell is lower than a first preset temperature (the fuel cell is in a low-temperature running or low-temperature starting state), the control module controls the adjustable flow dividing piece to respectively communicate the first temperature adjusting branch with the main liquid inlet pipeline and the main liquid outlet pipeline, and the first temperature adjusting branch is used for heating the cooling liquid; when the current temperature of the fuel cell is higher than a second preset temperature (the fuel cell is in a high-temperature running state), the control module controls the adjustable shunt part to respectively communicate the second temperature adjusting branch with the main liquid inlet pipeline and the main liquid outlet pipeline, and the second temperature adjusting branch is used for cooling the cooling liquid; when the current temperature of the fuel cell is lower than a first preset temperature (the fuel cell is in a low-temperature running or low-temperature starting state), the control module controls the adjustable flow dividing piece to respectively communicate the first temperature adjusting branch with the main liquid inlet pipeline and the main liquid outlet pipeline, and the first temperature adjusting branch is used for heating the cooling liquid; when the current temperature of the fuel cell is greater than or equal to a first preset temperature and less than or equal to a second preset temperature, the control module controls the adjustable shunt part to be kept in the current state (at the moment, the first temperature adjusting branch and/or the second temperature adjusting branch operate).
Through the cooperation of adjustable reposition of redundant personnel piece, first branch road and the second branch road that adjusts the temperature, effectively maintain fuel cell at optimum operating temperature, guaranteed fuel cell's performance, prolonged fuel cell's life.
In addition, the fuel cell according to the present invention may have the following additional technical features:
in some embodiments of the invention, the cooling method of the fuel cell further comprises:
acquiring the current flow of cooling liquid entering the galvanic pile;
controlling a first control valve to be opened according to the condition that the current flow of the cooling liquid is less than or equal to the preset flow;
obtaining the current liquid level of the cooling liquid in the supply tank;
controlling a second control valve to be opened according to the condition that the liquid level of the cooling liquid is less than or equal to a first preset value;
and controlling a second control valve to close according to the liquid level of the cooling liquid being more than or equal to a second preset value, wherein the second preset value is more than the first preset value.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
fig. 1 schematically shows a schematic structural view of a fuel cell according to an embodiment of the invention (only a partial structure is shown, and black arrows indicate the flow direction of a coolant);
fig. 2 is a schematic view of the structure of the fuel cell shown in fig. 1 in a first temperature-adjusting bypass circuit (only a part of the structure is shown, and black arrows indicate the flow direction of the coolant);
fig. 3 is a schematic view of the fuel cell shown in fig. 1 in a second temperature-adjusting bypass circuit (only a part of the structure is shown, and black arrows indicate the flow direction of the coolant);
fig. 4 schematically shows a flow chart of a cooling method of a fuel cell according to an embodiment of the invention.
The reference numbers are as follows:
100 is a fuel cell;
10 is a galvanic pile;
20 is a cooling system;
201 is a main liquid inlet pipeline;
202 is a main liquid outlet pipeline;
203 is an adjustable shunt;
204 is a first temperature regulating branch;
2041 is a heating element, 2042 is a first branch pipeline;
205 is a second temperature regulating branch;
2051 is a second branch pipe, 2052 is a cooling piece;
206 is a driving member;
207 is a filter element;
208 is a control module;
209 is a temperature acquisition module;
2091 is a first temperature sensor, 2092 is a second temperature sensor;
210 is a pressure acquisition module;
2101 is a first pressure sensor, 2102 is a second pressure sensor;
211 is a flow meter;
212 is a conductivity meter;
213 is a communicating piece;
214 is a first control valve;
215 is a supply tank;
216 is a second control valve;
217 is a supply device.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 4, according to an embodiment of the present invention, there is provided a fuel cell 100, the fuel cell 100 including: the cooling system 20 comprises a main liquid inlet pipeline 201, a main liquid outlet pipeline 202, an adjustable shunt part 203, a first temperature adjusting branch 204 for improving the temperature of cooling liquid and a second temperature adjusting branch 205 for reducing the temperature of the cooling liquid, wherein one end of the main liquid inlet pipeline 201 and one end of the main liquid outlet pipeline 202 are respectively communicated with the stack 10, the adjustable shunt part 203 is communicated with the other end of the main liquid outlet pipeline 202, and the first temperature adjusting branch 204 and the second temperature adjusting branch 205 are connected between the other end of the main liquid inlet pipeline 201 and the adjustable shunt part 203 in parallel.
Specifically, a first temperature-adjusting branch 204 and a second temperature-adjusting branch 205 in the cooling system 20 are respectively connected in parallel between the main liquid inlet pipe 201 and the main liquid outlet pipe 202, the adjustable flow-dividing member 203 is disposed on the main liquid outlet pipe 202, the temperature-adjusting branch 201 and the main liquid outlet pipe 202 through which the cooling liquid flowing out from the main liquid outlet pipe 202 is returned to the main liquid inlet pipe 201 is controlled by adjusting the adjustable flow-dividing member 203, when the fuel cell 100 is in low-temperature operation or low-temperature start-up, the adjustable flow-dividing member 203 connects the first temperature-adjusting branch 204 with the main liquid inlet pipe 201 and the main liquid outlet pipe 202, the cooling liquid is heated by the first temperature-adjusting branch 204, when the fuel cell 100 is in a high-temperature operation environment (including room temperature), the adjustable flow-dividing member 203 connects the second temperature-adjusting branch 205 with the main liquid inlet pipe 201 and the main liquid outlet pipe 202, the cooling liquid is cooled by the second temperature-adjusting branch 205, and the cooling liquid is cooled by the adjustable flow-dividing member 203, The cooperation of the first temperature regulating branch 204 and the second temperature regulating branch 205 effectively maintains the fuel cell 100 at the optimal operating temperature, ensures the performance of the fuel cell 100, and prolongs the service life of the fuel cell 100.
It should be noted that, after the fuel cell 100 is started, the air intake amounts of air and hydrogen are adjusted according to the power required by the stack 10, when the fuel cell is in operation, the current temperature of the coolant is obtained, and the current temperature of the coolant is used for judgment, when the current temperature of the coolant is lower than a first preset temperature, the stack 10 is judged to be in a low-temperature operation state, at this time, the stack 10 needs to be heated, and the adjustable shunt member 203 is controlled, so that the main liquid outlet pipeline 202 is communicated with the main liquid inlet pipeline 201 through the first temperature adjusting branch 204, and when the coolant passes through the first temperature adjusting pipeline, the first temperature adjusting pipeline raises the temperature of the coolant in a heating manner and enters the stack 10 through the main liquid inlet pipeline 201, so as to raise the temperature of the stack 10; when the current temperature of the cooling liquid is higher than a second preset temperature, the galvanic pile 10 is judged to be in a high-temperature running state, at this time, the galvanic pile 10 needs to be cooled, the adjustable flow dividing piece 203 is controlled, so that the main liquid outlet pipeline 202 is communicated with the main liquid inlet pipeline 201 through the second temperature adjusting branch 205, when the cooling liquid passes through the second temperature adjusting pipeline, the second temperature adjusting pipeline reduces the temperature of the cooling liquid in a cooling mode and enters the galvanic pile 10 through the main liquid inlet pipeline 201, and the temperature of the galvanic pile 10 is reduced; when the current temperature of the cooling liquid is greater than or equal to the first preset temperature and the current temperature of the cooling liquid is less than or equal to the second preset temperature, it is determined that the galvanic pile 10 is in the optimal operation state, the temperature of the galvanic pile 10 does not need to be adjusted, and the current state of the adjustable shunt member 203 is maintained.
In addition, in the present invention, the adjustable flow dividing member 203 is a three-way proportional valve, which can communicate the main liquid outlet pipe 202 with the first temperature adjusting branch 204 (at this time, the first temperature adjusting branch 204 is in a starting state), can communicate the main liquid outlet pipe 202 with the second temperature adjusting branch 205 (at this time, the second temperature adjusting branch 205 is in a starting state), and can communicate the main liquid outlet pipe 202 with both the first temperature adjusting branch 204 and the second temperature adjusting branch 205 (at this time, both the first temperature adjusting branch 204 and the second temperature adjusting branch 205 are in a starting state).
It is further understood that the cooling system 20 further includes a driving member 206 and a filtering member 207, the driving member 206 is respectively communicated with the other end of the main liquid inlet pipe 201, the first temperature adjusting branch 204 and the second temperature adjusting branch 205 and is used for driving the cooling liquid to circulate, and the filtering member 207 is disposed on the main liquid inlet pipe 201 and is used for filtering the cooling liquid. Specifically, the driving element 206 and the filtering element 207 are both disposed on the main liquid inlet pipe 201, the filtering element 207 is disposed between the driving element 206 and the stack 10, the driving element 206 is respectively communicated with the first temperature adjusting branch 204 and the second temperature adjusting branch 205, and the driving element 206 is utilized to drive the cooling liquid, so that the cooling liquid circulates in the cooling system 20, the temperature adjustment of the stack 10 is realized, and the stable operation of the fuel cell 100 is further ensured. In addition, the filtering member 207 is used for filtering impurities in the cooling water to ensure the smoothness of the flow of the cooling water, and further ensure the cooling effect of the cooling water on the stack 10, so that the operation stability of the fuel cell 100 is ensured.
It should be noted that, in the present invention, the filter 207 is a filter, the driving element 206 is a driving pump, and the driving pump has a simple structure and a good driving effect, and can effectively provide a driving force for the cooling liquid, thereby further ensuring the circulation of the cooling liquid to maintain the stack 10 in an optimal operating state.
Further, first branch pipeline 204 that adjusts temperature includes first branch pipeline 2042 and heating member 2041, and the one end and the adjustable reposition of redundant personnel 203 intercommunication of first branch pipeline 2042, the other end and the driving piece 206 intercommunication of first branch pipeline 2042, heating member 2041 sets up on first branch pipeline 2042 for the coolant liquid through first branch pipeline 2042 is heated. Specifically, the first branch pipe 2042 is respectively communicated with the adjustable shunt part 203 and the driving part 206, the heating part 2041 is arranged on the first branch pipe 2042, when the temperature of the cooling liquid needs to be raised, the adjustable shunt part 203 is controlled to communicate the main liquid outlet pipe 202 with the first branch pipe 2042, the cooling liquid flowing out from the main liquid outlet pipe 202 enters the first branch pipe 2042 through the adjustable shunt part 203, when the cooling liquid passes through the heating part 2041, the heating part 2041 heats the cooling liquid through heat exchange, the temperature of the cooling liquid is raised, the raised cooling liquid circulates to the inside of the cell stack 10 through the driving part 206, the filtering part 207 and the main liquid inlet pipe 201 and exchanges heat with the cell stack 10, the temperature of the cell stack 10 is raised to the optimal working temperature, and the cell stack 10 is kept in the optimal working state.
It should be noted that, in the present invention, the heating element 2041 is a PTC (Positive Temperature Coefficient thermistor), when the cooling liquid is heated, the PTC is turned on to heat the cooling liquid, the heating power is controlled according to the difference between the target Temperature and the actual Temperature by using a PID algorithm, and the PTC is used to heat the cooling liquid passing through the first branch pipe 2042, so as to facilitate the Temperature control and effectively improve the control accuracy.
Further, the second temperature-adjusting branch 205 includes a second branch pipe 2051 and a cooling element 2052, one end of the second branch pipe 2051 is communicated with the adjustable flow divider 203, the other end of the second branch pipe 2051 is communicated with the driving element 206, and the cooling element 2052 is disposed on the second branch pipe 2051 and is used for cooling the cooling liquid passing through the second branch pipe 2051. Specifically, the second branch pipe 2051 is respectively communicated with the adjustable shunt part 203 and the driving part 206, the cooling part 2052 is arranged on the second branch pipe 2051, when cooling liquid needs to be cooled, the adjustable shunt part 203 is controlled to communicate the main liquid outlet pipe 202 with the second branch pipe 2051, the cooling liquid flowing out from the main liquid outlet pipe 202 enters the second branch pipe 2051 through the adjustable shunt part 203, when the cooling liquid passes through the cooling part 2052, the cooling part 2052 cools the cooling liquid through heat exchange, so that the temperature of the cooling liquid is reduced, the cooled cooling liquid circulates to the inside of the cell stack 10 through the driving part 206, the filtering part 207 and the main liquid inlet pipe 201 and exchanges heat with the cell stack 10, so that the temperature of the cell stack 10 is reduced to the optimal working temperature, and the cell stack 10 is kept in the optimal working state.
It should be noted that, in the present invention, the cooling element 2052 includes a coil and a fan, wherein two sections of the coil are respectively communicated with the second branch pipe 2051, when cooling liquid needs to be cooled, the fan is started, the adjustable shunt element 203 communicates the main liquid outlet pipe 202 with the second branch pipe 2051, when the cooling liquid flows through the coil through the second branch pipe 2051, the running fan blows air to the coil, so as to cool the cooling liquid flowing through the coil by using air convection, in addition, the number of the fans is multiple, and the number of the fans to be started can be determined according to the cooling requirement.
Further, the cooling system 20 further includes a control module 208, a temperature acquisition module 209, a pressure acquisition module 210, a flow acquisition module and a concentration acquisition module, the control module 208 is respectively electrically connected with the adjustable shunt member 203, the heating member 2041 and the cooling member 2052, the temperature acquisition module 209 is electrically connected with the control module 208 for acquiring the temperature of the cooling liquid, the pressure acquisition module 210 is electrically connected with the control module 208 for acquiring the pressure of the cooling liquid, the flow acquisition module is electrically connected with the control module 208 for acquiring the flow of the cooling liquid, and the concentration acquisition module is electrically connected with the control module 208 for acquiring the ion concentration in the cooling liquid. Specifically, the current temperature of the cooling liquid is collected by the temperature collection module 209, the current pressure of the cooling liquid is collected by the pressure collection module 210, the current flow of the cooling liquid is collected by the flow collection module, the current concentration of ions in the cooling liquid is collected by the concentration collection module, the controller respectively receives information of collection points of the collection modules, and the collected information is displayed in real time by the display module, so that field personnel can intuitively and accurately master the current condition of the cooling system 20 in time, in addition, the control module 208 respectively controls the cooling system 20 according to the collected information, thereby reducing errors of manual control, improving the control precision, and ensuring stable and efficient operation of the fuel cell 100.
Further, the temperature acquisition module 209 includes a first temperature sensor 2091 and a second temperature sensor 2092, the first temperature sensor 2091 is disposed on the main liquid inlet pipe 201 and is configured to acquire the temperature of the cooling liquid passing through the main liquid inlet pipe 201, and the second temperature sensor 2092 is disposed on the main liquid outlet pipe 202 and is configured to acquire the temperature of the cooling liquid passing through the main liquid outlet pipe 202. Specifically, the first temperature sensor 2091 is disposed on the main liquid inlet pipe 201, the second temperature sensor 2092 is disposed on the main liquid outlet pipe 202, and the temperature information collected by the first temperature sensor 2091 and the second temperature sensor 2092 is utilized to effectively determine the current temperature of the cooling liquid and also determine the current operating environment of the electric pile 10, so that the control module 208 can further control the cooling system 20 according to the temperature, and the control accuracy of the cooling system 20 is further ensured.
It should be appreciated that the high accuracy of the temperature sensor improves the accuracy of the temperature sensing, resulting in further improved control of the cooling system 20.
It should be noted that, in order to further improve the accuracy of the temperature measurement, a plurality of temperature sensors may be further provided, for example, the temperature sensors are provided on the first temperature adjusting branch 204 and/or the second temperature adjusting branch 205, which is not described herein again, and those skilled in the art may perform adaptive setting and adjustment according to actual needs.
Further, the pressure collecting module 210 includes a first pressure sensor 2101 and a second pressure sensor 2102, the first pressure sensor 2101 is disposed on the main liquid inlet pipe 201 and is configured to collect the pressure of the cooling liquid passing through the main liquid inlet pipe 201, and the second pressure sensor 2102 is disposed on the main liquid outlet pipe 202 and is configured to collect the pressure of the cooling liquid passing through the main liquid outlet pipe 202. Specifically, the first pressure sensor 2101 is arranged on the main liquid inlet pipeline 201, the second pressure sensor 2102 is arranged on the main liquid outlet pipeline 202, and the current pressure of the cooling liquid is effectively judged by using the pressure information acquired by the first pressure sensor 2101 and the second pressure sensor 2102, and the current operating environment of the electric pile 10 can be judged, so that the control module 208 can further control the cooling system 20 according to the temperature, and the control accuracy of the cooling system 20 is further ensured.
It should be appreciated that the high accuracy of the pressure sensor improves the accuracy of the pressure sensing, resulting in further improved control of the cooling system 20.
It should be noted that, in order to further improve the accuracy of the pressure measurement, a plurality of pressure sensors may be further provided, for example, the pressure sensors are provided on the first temperature adjusting branch 204 and/or the second temperature adjusting branch 205, and the detailed description of the present invention is omitted, and a person skilled in the art may perform adaptive setting and adjustment according to actual needs.
Further, the flow rate collecting module is a flow meter 211, and the flow meter 211 is disposed on the main liquid inlet pipe 201. Specifically, the flow rate of the cooling liquid entering the stack 10 is obtained in real time through the flow meter 211, so that the current amount of the cooling liquid can be known conveniently, and when the amount of the cooling liquid is insufficient, the cooling liquid can be effectively replenished, so that the stack 10 is maintained at the optimal working temperature, and the operation stability of the fuel cell 100 is further ensured.
It should be appreciated that the accuracy of the flow meter 211 is high, which improves the accuracy of the flow detection, and further improves the control of the cooling system 20.
Further, the concentration acquisition module is a conductivity meter 212, and the conductivity meter 212 is disposed on the main liquid outlet pipeline 202. Specifically, the conductivity meter 212 is used to detect the ion concentration in the cooling liquid, so as to eliminate the adverse effect on the cell stack 10 caused by the fact that the ion concentration is too high and the cooling liquid cannot be replaced in time.
Further, the cooling system 20 further includes a communication member 213, a first supply pipe, a supply tank 215, and a first control valve 214, wherein the communication member 213 is disposed on the second branch and located between the driving member 206 and the cooling member 2052, one end of the first supply pipe is communicated with the communication member 213, the supply tank 215 is communicated with the other end of the first supply pipe for storing the cooling liquid, and the first control valve 214 is disposed on the first supply pipe and electrically connected to the control module 208 for controlling on/off of the first supply pipe. Specifically, when the current flow of the coolant collected by the flow collection module cannot meet the temperature regulation requirement of the stack 10, the control module 208 controls the first control valve 214 to open, the coolant in the supply tank 215 enters the second branch (the side of the second branch far away from the cooling part 2052) through the first supply pipe and the communication part 213, and the driving part 206 enters the main liquid inlet pipeline 201, so as to realize supply of the coolant, and meanwhile, the gas generated in the coolant can enter the supply tank 215 through the communication part 213, the first supply pipe and the first control valve 214, so as to realize discharge of the gas in the coolant. Automatic supply of the cooling liquid is realized by providing the communication member 213, the first supply pipe, the supply tank 215, and the first control valve 214, so that the number of steps of manual operation is reduced, and the temperature-efficient operation of the fuel cell 100 is further ensured.
In addition, the concentration of ions in the cooling liquid can be effectively reduced by supplying the cooling liquid, so that the adverse effect on the electric pile 10 caused by the concentration of the ions can be avoided.
It should be noted that, in the present invention, the communication member 213 is a three-way joint, and the first control valve 214 is a first electromagnetic valve.
Further, the cooling system 20 further includes a second supply pipe, a second control valve 216, and a supply device 217, one end of the second supply pipe is communicated with the supply tank 215, the supply device 217 is communicated with the other end of the second supply pipe for supplying the supply tank 215 with the cooling liquid, and the second control valve 216 is disposed on the second supply pipe and electrically connected to the control module 208 for controlling on/off of the second supply pipe. Specifically, when the liquid level of the cooling liquid in the makeup tank 215 is less than or equal to a first preset value, the control module 208 opens the second control valve 216 and activates the supply device 217, the supply device 217 supplies the cooling liquid to the makeup tank 215 through the second supply pipe, and when the liquid level of the cooling liquid in the makeup tank 215 is greater than or equal to a second preset value, the control module 208 closes the second control valve 216 and the supply device 217 to prevent the cooling liquid from overflowing. The continuous supply of the coolant is further ensured by the second supply pipe, the second control valve 216, and the supply device 217 to avoid adverse effects on the fuel cell 100 due to insufficient coolant.
It should be noted that, in the present invention, the second control valve 216 is a second electromagnetic valve, the coolant is deionized water, the driving member 206 is a water pump, and the supply device 217 is a water purifier, and the water purifier is connected to the water supply line, so that the coolant can be continuously supplied to the cooling system 20.
In addition, a liquid level sensor electrically connected with the control module 208 is arranged in the supply tank 215, and the liquid level of the cooling liquid in the supply tank 215 is acquired in real time by using the liquid level sensor, so that the fuel cell 100 is prevented from being adversely affected by the absence of the cooling liquid.
As shown in fig. 1 to 4, the present invention also proposes a cooling method of a fuel cell 100, the cooling method of the fuel cell 100 being implemented according to the fuel cell 100 as above, the cooling method of the fuel cell 100 comprising: s1: acquiring the current temperature of the cooling liquid, S2: controlling the adjustable flow dividing piece 203 to communicate the main liquid outlet pipeline 202 with the first temperature adjusting branch 204 according to the fact that the current temperature of the cooling liquid is lower than a first preset temperature, and S3: according to the fact that the current temperature of the cooling liquid is greater than or equal to the first preset temperature and the current temperature of the cooling liquid is less than or equal to the second preset temperature, the adjustable flow divider 203 is controlled to be kept in the current state, and the second preset temperature is greater than the first preset temperature, S4: and controlling the adjustable flow dividing piece 203 to communicate the main liquid outlet pipe 202 with the second temperature adjusting branch 205 according to the fact that the current temperature of the cooling liquid is higher than the second preset temperature.
According to the cooling method of the fuel cell 100 of the present invention, the control module 208 compares the acquired current temperature with the first preset temperature and the second preset temperature, thereby determining in which working environment the coolant is.
When the current temperature of the fuel cell 100 is lower than a first preset temperature (the fuel cell 100 is in a low-temperature operation state or a low-temperature start state), the control module 208 controls the adjustable flow dividing member 203 to respectively communicate the first temperature adjusting branch 204 with the main liquid inlet pipeline 201 and the main liquid outlet pipeline 202, and the first temperature adjusting branch 204 is used for heating the cooling liquid; when the current temperature of the fuel cell 100 is higher than a second preset temperature (the fuel cell 100 is in a high-temperature operation state), the control module 208 controls the adjustable flow dividing member 203 to respectively communicate the second temperature adjusting branch 205 with the main liquid inlet pipeline 201 and the main liquid outlet pipeline 202, and the second temperature adjusting branch 205 is used for cooling the cooling liquid; when the current temperature of the fuel cell 100 is lower than a first preset temperature (the fuel cell 100 is in a low-temperature operation state or a low-temperature start state), the control module 208 controls the adjustable flow dividing member 203 to respectively communicate the first temperature adjusting branch 204 with the main liquid inlet pipeline 201 and the main liquid outlet pipeline 202, and the first temperature adjusting branch 204 is used for heating the cooling liquid; when the current temperature of the fuel cell 100 is greater than or equal to the first preset temperature and less than or equal to the second preset temperature, the control module 208 controls the adjustable current dividing member 203 to maintain the current state (at this time, the first temperature adjusting branch 204 and/or the second temperature adjusting branch 205 operate).
Through the cooperation of the adjustable shunt member 203, the first temperature regulating branch 204 and the second temperature regulating branch 205, the fuel cell 100 is effectively maintained at the optimal operating temperature, the performance of the fuel cell 100 is ensured, and the service life of the fuel cell 100 is prolonged.
Further, the cooling method of the fuel cell 100 further includes: s5: acquiring the current flow of the cooling liquid entering the galvanic pile 10; s6: controlling the first control valve 214 to open according to the current flow rate of the cooling liquid being less than or equal to the preset flow rate; s7: obtaining a current level of cooling fluid within the makeup tank 215; s8: controlling the second control valve 216 to open according to the liquid level of the cooling liquid being less than or equal to a first preset value; s9: and controlling the second control valve 216 to close according to the liquid level of the cooling liquid being greater than or equal to a second preset value, wherein the second preset value is greater than the first preset value.
In the present invention, the first preset temperature is 60 ℃, the second preset temperature is 90 ℃, and the following description is specifically made in combination with specific use conditions:
(1) low temperature start-up
After the system is powered on, the water pump is started, deionized water enters the galvanic pile 10 after passing through the filter, the flow meter 211, the temperature sensor and the pressure sensor on the main liquid inlet pipeline 201 monitor the flow, the temperature and the pressure of the deionized water before entering the galvanic pile 10 in real time, and corresponding voltage signals are output to the system. Because the system is cold-started, the temperature of the deionized water entering the galvanic pile 10 is low, and the temperature of the water monitored by the temperature sensor does not reach about 60 ℃, the system gives a voltage signal to the three-way proportional valve to control the shunt of the three-way proportional valve, so that the deionized water coming out of the galvanic pile 10 flows to the PTC, the PTC works to heat the deionized water, and the heated deionized water enters the water pump.
(1.1) operation at ambient temperature
At room temperature, after the deionized water exits the cell stack 10, the temperature sensors, the pressure sensors, and the conductivity meter 212 on the cooling water paths (the main liquid inlet pipeline 201, the main liquid outlet pipeline 202, the first branch pipeline 2042, and the second branch pipeline 2051) collect the temperature, the pressure, and the ion concentration of the deionized water in real time and output corresponding voltage signals to the control system. The system gives a voltage signal to the three-way proportional valve and controls the shunt of the three-way proportional valve, so that the high-temperature deionized water from the galvanic pile 10 enters the cooling piece 2052, and simultaneously, the system gives a voltage signal to the cooling piece 2052 to control the work of the cooling piece, and at the moment, the PTC does not work.
(1.2) operation in Low-temperature Environment
In a low-temperature environment, because the external temperature is too low, the temperature of deionized water is too low after a cooling water path is cooled in the low-temperature environment, the temperature acquired by a temperature sensor is lower than the water inlet temperature required by the galvanic pile 10, the temperature sensor gives a voltage signal to a system, the system gives a voltage signal to the PTC, the PTC is controlled to start working, and simultaneously gives a voltage signal to the three-way proportional valve, the three-way proportional valve is controlled to shunt, so that the deionized water coming out of the galvanic pile 10 is directly heated by the PTC without passing through a supercooling device, and simultaneously gives a voltage signal to the cooling part 2052, and the cooling part 2052 is controlled not to work.
(2) Automatic water making and supplementing
When the system is running, the first electromagnetic valve under the supply tank 215 is opened to replenish the cooling water path (the main liquid inlet line 201, the main liquid outlet line 202, the first branch line 2042, and the second branch line 2051) (deionized water in the cooling water path is reduced due to the running of the cooling system 20), and at the same time, air generated due to the reduction of deionized water in the cooling water path is exhausted into the replenishing tank through the three-way joint.
When the level of the deionized water in the replenishment tank is lower than a certain limited level (a first preset value), the level sensor in the replenishment tank 215 outputs a voltage signal to the system, the system outputs a voltage signal to the water purifier to control the water purifier to start producing deionized water, and simultaneously the voltage system outputs a signal to the second electromagnetic valve to control the second electromagnetic valve to be opened, so that the deionized water produced by the water purifier is replenished into the replenishment tank.
While the invention has been described with reference to specific preferred embodiments, 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 as defined in the following claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A fuel cell, characterized in that the fuel cell comprises:
a galvanic pile;
a cooling system, the cooling system comprising:
a main liquid inlet pipeline;
one end of the main liquid inlet pipeline and one end of the main liquid outlet pipeline are respectively communicated with the galvanic pile;
the adjustable flow dividing piece is communicated with the other end of the main liquid outlet pipeline;
the first temperature adjusting branch is used for increasing the temperature of the cooling liquid and comprises a first branch pipeline and a heating element;
the second temperature adjusting branch is used for reducing the temperature of the cooling liquid and comprises a second branch pipeline and a cooling part;
the driving piece is communicated with the other end of the main liquid inlet pipeline, the first temperature regulating branch and the second temperature regulating branch respectively and is used for driving cooling liquid to circulate;
the filter element is arranged on the main liquid inlet pipeline and is used for filtering cooling liquid;
one end of the first branch pipeline is communicated with the adjustable flow dividing piece, and the other end of the first branch pipeline is communicated with the driving piece; the heating element is arranged on the first branch pipeline and used for heating the cooling liquid passing through the first branch pipeline; one end of the second branch pipeline is communicated with the adjustable flow dividing piece, and the other end of the second branch pipeline is communicated with the driving piece; the cooling part is arranged on the second branch pipeline and used for cooling the cooling liquid passing through the second branch pipeline;
the first temperature regulating branch and the second temperature regulating branch are connected between the other end of the main liquid inlet pipeline and the adjustable flow dividing piece in parallel;
a control module electrically connected to the adjustable shunt member, the heating member, and the cooling member, respectively;
the temperature acquisition module is electrically connected with the control module and is used for acquiring the temperature of the cooling liquid;
the pressure acquisition module is electrically connected with the control module and is used for acquiring the pressure of the cooling liquid;
the flow acquisition module is electrically connected with the control module and is used for acquiring the flow of the cooling liquid;
the concentration acquisition module is electrically connected with the control module and is used for acquiring the concentration of ions in the cooling liquid;
a communication member, which is arranged on the second branch in a communication manner and is positioned between the driving member and the cooling member;
one end of the first supply pipe is communicated with the communicating piece;
the supply tank is communicated with the other end of the first supply pipe and is used for storing cooling liquid;
the first control valve is arranged on the first supply pipe, is electrically connected with the control module and is used for controlling the on-off of the first supply pipe.
2. The fuel cell of claim 1, wherein the temperature acquisition module comprises:
the first temperature sensor is arranged on the main liquid inlet pipeline and used for collecting the temperature of the cooling liquid passing through the main liquid inlet pipeline;
the second temperature sensor is arranged on the main liquid outlet pipeline and used for collecting the temperature of the cooling liquid passing through the main liquid outlet pipeline;
and/or the pressure acquisition module comprises:
the first pressure sensor is arranged on the main liquid inlet pipeline and used for collecting the pressure of the cooling liquid passing through the main liquid inlet pipeline;
the second pressure sensor is arranged on the main liquid outlet pipeline and used for collecting the pressure of the cooling liquid passing through the main liquid outlet pipeline;
and/or the flow collecting module is a flowmeter which is arranged on the main liquid inlet pipeline;
and/or the concentration acquisition module is a conductivity meter which is arranged on the main liquid outlet pipeline.
3. The fuel cell according to claim 1, wherein the cooling system further comprises:
a second supply pipe, one end of which is communicated with the supply tank;
a supply device, which is communicated with the other end of the second supply pipe and is used for supplying cooling liquid to the supply tank;
and the second control valve is arranged on the second supply pipe, is electrically connected with the control module and is used for controlling the on-off of the second supply pipe.
4. A cooling method of a fuel cell, which is implemented according to the fuel cell of any one of claims 1 to 3, characterized by comprising:
acquiring the current temperature of the cooling liquid;
controlling the adjustable flow dividing piece to communicate the main liquid outlet pipeline with the first temperature adjusting branch circuit according to the condition that the current temperature of the cooling liquid is lower than a first preset temperature;
controlling the adjustable flow dividing piece to be kept in a current state according to the fact that the current temperature of the cooling liquid is greater than or equal to a first preset temperature and the current temperature of the cooling liquid is less than or equal to a second preset temperature, wherein the second preset temperature is greater than the first preset temperature;
and controlling the adjustable flow dividing piece to communicate the main liquid outlet pipeline with the second temperature adjusting branch according to the fact that the current temperature of the cooling liquid is higher than the second preset temperature.
5. The cooling method of a fuel cell according to claim 4, characterized by further comprising:
obtaining the current flow of the cooling liquid entering the galvanic pile;
controlling a first control valve to be opened according to the condition that the current flow of the cooling liquid is less than or equal to the preset flow;
obtaining the current liquid level of the cooling liquid in the supply tank;
controlling a second control valve to be opened according to the condition that the liquid level of the cooling liquid is less than or equal to a first preset value;
and controlling a second control valve to close according to the liquid level of the cooling liquid being more than or equal to a second preset value, wherein the second preset value is more than the first preset value.
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| TWI385847B (en) * | 2009-01-16 | 2013-02-11 | Asia Pacific Fuel Cell Tech | Stage fuel cell system for loading system components and methods thereof |
| CN108232234A (en) * | 2016-12-22 | 2018-06-29 | 郑州宇通客车股份有限公司 | A kind of fuel cell system and fuel cell car |
| CN107014110B (en) * | 2017-03-24 | 2020-01-14 | 西安交通大学 | Distributed water vapor cold-heat-electricity combined supply device and method |
| CN109244505B (en) * | 2018-09-25 | 2023-08-11 | 吉林大学 | Vehicle fuel cell thermal management system and control method thereof |
| CN211320222U (en) * | 2020-01-20 | 2020-08-21 | 风氢扬科技(杭州)有限公司 | Fuel cell and hydrogen heating water circulation system thereof |
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