CN210866371U - Fuel cell heating system - Google Patents
Fuel cell heating system Download PDFInfo
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- CN210866371U CN210866371U CN201920828395.2U CN201920828395U CN210866371U CN 210866371 U CN210866371 U CN 210866371U CN 201920828395 U CN201920828395 U CN 201920828395U CN 210866371 U CN210866371 U CN 210866371U
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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 utility model provides a fuel cell heating system, include: an air compressor; the first end of the first three-way electromagnetic valve is connected with the air outlet of the air compressor, and the second end of the first three-way electromagnetic valve is connected with the air inlet of the fuel cell through an air pipeline; the air inlet end of the radiator is connected with the third end of the first three-way electromagnetic valve, and the air outlet end of the radiator is connected with the air inlet of the fuel cell; the first end of the second three-way electromagnetic valve is connected with the air outlet of the radiator and the third end of the first three-way electromagnetic valve; the second end of the second three-way electromagnetic valve is connected with an air inlet of the fuel cell; and the air outlet end of the cooling liquid heating loop is connected with an air inlet of the fuel cell, so that the cold starting speed is increased.
Description
Technical Field
The utility model relates to an automobile battery technical field, concretely relates to vehicle-mounted fuel cell cold start heat recovery's fuel cell heating system.
Background
Proton Exchange Membrane Fuel Cells (PEMFCs) are an important development direction for new energy vehicles due to their advantages of low-temperature start, cleanliness, environmental protection, and high specific power. Currently, shortening the cold start time is one of the major research points of fuel cells. The fuel cell engine must work to make the temperature of the fuel cell stack reach a set value, and when the ambient temperature is low, the cooling water of the fuel cell engine needs to be heated, and the fuel cell stack is heated by the cooling water.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a fuel cell heating system in the prior art, which is composed of an air compressor, a radiator, a thermostat, a heater and a water pump;
the working principle of the existing galvanic pile cooling system is as follows:
when the temperature of the galvanic pile in the fuel cell does not meet the working temperature, the heater is started to work, and cooling water flows from a galvanic pile cooling water outlet, a water pump, a heater, a thermostat and a galvanic pile cooling water path inlet;
because the cooling water temperature is low, the thermostat only allows the cooling water path to circulate a little, and the cooling water does not pass through the radiator;
namely, the fuel cell stack cooling system completes the heating of cooling water under the action of the heater, so that the temperature of the stack is increased.
The thermostat is used for controlling the cooling water path not to pass through the radiator when the temperature of the cooling water is lower than a certain value; and when the temperature of the cooling water is higher than a certain value, controlling the cooling water path to pass through the radiator. The function of the thermostat is the same as that of the traditional thermostat for the engine.
The applicant finds that the heating time of the current heating and cooling water path through the heater is slow, and once the heater and related components of the heater fail, the cold start heating of the electric pile cannot be realized, so that the use of the engine is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above, embodiments of the present invention provide a fuel cell heating system to increase the cold start speed of the fuel cell.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
a fuel cell heating system comprising:
an air compressor;
the first end of the first three-way electromagnetic valve is connected with the air outlet of the air compressor, and the second end of the first three-way electromagnetic valve is connected with the air inlet of the fuel cell through an air pipeline;
the air inlet end of the radiator is connected with the third end of the first three-way electromagnetic valve, and the air outlet end of the radiator is connected with the air inlet of the fuel cell;
the second three-way electromagnetic valve is arranged in the air pipeline, and the first end of the second three-way electromagnetic valve is connected with the air outlet of the radiator and the third end of the first three-way electromagnetic valve; the second end of the second three-way electromagnetic valve is connected with an air inlet of the fuel cell;
the cooling liquid heating loop is used for carrying out heat exchange with a heat exchanger, the air inlet end of the cooling liquid heating loop is connected with the third end of the second three-way electromagnetic valve, and the air outlet end of the cooling liquid heating loop is connected with the air inlet of the fuel cell;
a heat exchanger located in a coolant loop in the fuel cell heating system for effecting heat exchange between a high temperature gas in the coolant heating loop and a coolant in the coolant loop.
Optionally, in the fuel cell heating system, the cooling liquid circuit further includes, in addition to the heat exchanger:
the water outlet end of the water inlet pipeline is connected with a cooling water inlet of the fuel cell, and the water inlet end of the water outlet pipeline is connected with a cooling water outlet of the fuel cell; the water outlet of the water outlet pipeline is connected with the first water inlet of the water inlet pipeline and the water inlet of the radiator, and the second water inlet of the water inlet pipeline is connected with the water outlet of the radiator;
the heat exchanger is arranged in the water inlet pipeline;
the water pump is arranged in the water outlet pipeline;
the heater is arranged at a first water inlet of the water inlet pipeline;
the thermostat is arranged in the water inlet pipeline, a first end of the thermostat is connected with a first water inlet of the water inlet pipeline, a second end of the thermostat is connected with a second water inlet of the radiator, and a third end of the thermostat is connected with a water inlet of the heat exchanger; the thermostat is used for controlling the conduction state between the first water inlet of the water inlet pipeline and the water outlet of the water inlet pipeline and the conduction state between the second water inlet of the water inlet pipeline and the water outlet of the water inlet pipeline.
Optionally, the fuel cell heating system further includes:
the output end of the vehicle control unit is connected with the control ends of the first three-way electromagnetic valve, the second three-way electromagnetic valve and the air compressor, and the output end of the vehicle control unit is used for providing control signals for controlling the working states of the first three-way electromagnetic valve, the second three-way electromagnetic valve and the air compressor.
Optionally, the fuel cell heating system further includes:
the air inlet end of the air return branch is connected to the exhaust branch of the fuel cell, and the air outlet end of the air return branch is connected with the air inlet end of the air compressor;
and the switch valve is used for controlling the conduction state between the air outlet end of the exhaust branch and the tail outlet of the fuel cell, and the conduction state between the air outlet end of the air return branch and the tail outlet.
Optionally, the fuel cell heating system further includes:
a filter and a gas mixing valve;
the filter is connected with the air compressor through the air mixing valve;
and the air return branch is connected with the air compressor through the air mixing valve.
Optionally, in the fuel cell heating system, the switching valve includes:
a first solenoid valve and a second solenoid valve;
the first electromagnetic valve is arranged on the exhaust branch, the second electromagnetic valve is arranged on the air return branch, and the air inlet end of the air return branch is connected to the exhaust branch between the first electromagnetic valve and the tail exhaust port of the fuel cell.
Optionally, in the fuel cell heating system, the switch valve is a third three-way valve, the third three-way valve is disposed at the air outlet end of the exhaust branch, a first port and a second port of the third three-way valve are disposed in the exhaust pipeline, and a third port of the third three-way valve is connected to the air inlet end of the air return branch.
Optionally, the fuel cell heating system further includes:
and the air outlet of the high-pressure air bottle is connected with the air inlet of the fuel cell.
Optionally, the fuel cell heating system further includes:
the high-pressure gas cylinder is a fuel cylinder for supplying combustible gas to a fuel cell or a brake cylinder for supplying braking energy to a vehicle braking system.
Based on among the above-mentioned technical scheme, when cold start state, through switching first three solenoid valve 2 and second three solenoid valve 4's state for the high-temperature gas of air compressor machine 1 output does not pass through radiator 3 cooling, introduces behind heat exchanger 7 the fuel cell content, and at this moment, its gas temperature that flows into the fuel cell inside is higher, simultaneously, when flowing through heat exchanger 7, has also increased the coolant temperature in the coolant liquid return circuit, thereby has improved the programming rate of fuel cell's galvanic pile, has improved cold start speed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a fuel cell heating system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a fuel cell heating system according to another embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a fuel cell heating system according to another embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a fuel cell heating system according to another embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a fuel cell heating system according to another embodiment of the present application;
fig. 6 is a schematic structural diagram of a fuel cell heating system according to another embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a fuel cell heating system according to another embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to solve the slow problem of fuel cell start-up speed among the prior art, the utility model provides a fuel cell heating system, this system can realize that the high temperature air that adopts 1 output of air compressor machine carries out the mode of heating to fuel cell among the fuel cell cold start-up process, heat the galvanic pile in the fuel cell, thereby the inside temperature rise of galvanic pile with higher speed, shorten the time of cold start, the icing of the inside diffusion layer (cathode region) of galvanic pile has been prevented, high potential when the start can effectively be restrained simultaneously, the reliability of membrane electrode has been improved. Specifically, referring to fig. 2, a fuel cell heating system disclosed in an embodiment of the present application includes:
when the air compressor 1 is started, external air flows into the air compressor 1 from an air inlet of the air compressor 1, and the air compressor 1 directly pressurizes the flowing gas, so that the pressurized air has higher temperature; specifically, the air compressor 1 is an air compressor 1 for a fuel cell: in order to meet the air intake requirement and improve the output power of the fuel cell engine, the air compressor 1 used by the fuel cell engine in the current market supplies power for high voltage, and the temperature of air compressed by the air compressor 1 can reach more than 150 ℃ after the operation, so that the compressed air needs to be subjected to inter-cooling when the fuel cell engine operates (an intercooler is generally arranged together with a radiator 3 for a stack). The patent uses high-temperature gas compressed by an air compressor 1 to heat a cooling water channel;
a first three-way electromagnetic valve 2, a first end of the first three-way electromagnetic valve 2 being connected to an air outlet of the air compressor 1, a second end of the first three-way electromagnetic valve 2 being connected to an air inlet of a fuel cell via an air line, the first three-way electromagnetic valve 2 being configured to, in a first state, introduce the gas output by the air compressor 1 into the radiator 3, and, in a second state, directly introduce the gas output by the air compressor 1 into the second three-way electromagnetic valve 4;
the air inlet end of the radiator 3 is connected with the third end of the first three-way electromagnetic valve 2, the air outlet end of the radiator 3 is connected with an air inlet of the fuel cell, an intercooler is arranged in the radiator 3, and the radiator 3 is specifically used for cooling high-temperature gas provided by the air compressor 1 and cooling coolant in the coolant loop;
the second three-way electromagnetic valve 4 is arranged in the air pipeline, and a first end of the second three-way electromagnetic valve 4 is connected with an air outlet of the radiator 3 and a third end of the first three-way electromagnetic valve 2; the second end of the second three-way electromagnetic valve 4 is connected with the air inlet of the fuel cell, and the second three-way electromagnetic valve 4 is used for introducing the gas flowing out from the outlet of the first three-way electromagnetic valve 2 or the radiator 3 into the air inlet of the fuel cell in a first state and is used for introducing the gas flowing into the second three-way electromagnetic valve 4 into the cooling liquid heating loop 5 in a second state;
a coolant heating loop 5, wherein the coolant heating loop 5 is used for exchanging heat with a heat exchanger 6, an air inlet end of the coolant heating loop 5 is connected with a third end of the second three-way electromagnetic valve 4, an air outlet end of the coolant heating loop 5 is connected with an air inlet of the fuel cell, in the coolant heating loop, gas flowing out of the second three-way electromagnetic valve 4 flows through the heat exchanger 6 through the coolant heating loop 5 and then enters the air inlet of the fuel cell, and exchanges heat with coolant in the coolant heating loop 6;
a heat exchanger 6, the heat exchanger 6 being located in a coolant loop in the fuel cell heating system, the heat exchanger 6 being for effecting heat exchange between high temperature gas in the coolant heating loop 5 and coolant in the coolant loop.
According to the scheme, the first three-way electromagnetic valve 2 can control high-temperature gas output by the air compressor 1 to directly flow into the second three-way electromagnetic valve 4 without passing through the radiator 3; when the fuel cell engine is in a non-cold starting state (when the fuel cell engine works normally), air in the air compressor 1 needs to be radiated through the radiator 3; when the cooling water needs to be heated in a cold starting state, the gas output by the air compressor 1 is introduced into the second three-way electromagnetic valve 4 through the first three-way electromagnetic valve 2, and the air does not pass through the radiator 3 any more to prevent heat dissipation.
The second three-way electromagnetic valve 4 can introduce the gas flowing into the second three-way electromagnetic valve 4 into the coolant heating circuit 5, thereby passing through the heat exchanger 7, and finally flowing into the air inlet of the fuel cell.
In a non-cold starting state (when a fuel cell engine works normally), air in the air compressor 1 directly enters the electric pile after being cooled by the radiator 3; when in a cold start state, the air temperature is higher and the temperature of the galvanic pile is lower, the air firstly enters the heat exchanger 7, and the air cooled by the heat exchanger 7 can further warm the galvanic pile in the galvanic pile so as to further utilize the heat in the air.
The heat exchanger 7 is arranged in the original cooling liquid circuit, and high-temperature air can heat cooling water after entering the device.
The working principle is as follows:
when the fuel cell engine state is a cold start state, the first three-way electromagnetic valve 2 is switched to a first state, so that the gas flowing out of the air compressor 1 enters the second three-way electromagnetic valve 4, and the second three-way electromagnetic valve 4 is switched to a second state, so that the gas flowing into the second three-way electromagnetic valve 4 flows into the coolant heating loop 5;
the air compressor 1 sets the self rotating speed according to the required rotating speed, wherein the required rotating speed refers to the rotating speed matched with the current temperature of the fuel cell stack and the temperature of the cooling liquid in the cooling liquid loop, after the air compressor 1 works, high-temperature gas output by the air compressor 1 flows into the second three-way electromagnetic valve 4 through the first three-way electromagnetic valve 2, flows into the second three-way electromagnetic valve 4 and then enters the cooling liquid heating loop 5, cooling water in the cooling liquid loop is heated through the heat exchanger 7, and the gas passing through the heat exchanger 7 enters the air inlet of the fuel cell and is finally discharged through the tail discharge port of the fuel cell;
when the engine state of the fuel cell is a normal starting state, the first three-way electromagnetic valve 2 is switched to a first state, so that the gas flowing out of the air compressor 1 enters the radiator 3, the gas flowing out of the radiator 3 flows through the second three-way electromagnetic valve 4, and the second three-way electromagnetic valve 4 directly introduces the gas flowing out of the radiator 3 into an air inlet of the fuel cell and finally discharges the gas through a tail discharge outlet of the fuel cell.
Through the scheme, when the cold start state is realized, the states of the first three-way electromagnetic valve 2 and the second three-way electromagnetic valve 4 are switched, so that the high-temperature gas output by the air compressor 1 is not cooled through the radiator 3 and is introduced into the fuel cell after passing through the heat exchanger 7, at the moment, the temperature of the gas flowing into the fuel cell is higher, and meanwhile, when the gas flows through the heat exchanger 7, the temperature of the cooling liquid in the cooling liquid loop is also increased, so that the temperature rise speed of the electric pile of the fuel cell is increased, and the cold start speed is increased.
Further, with reference to fig. 2, the cooling fluid circuit comprises, in addition to the heat exchanger 6:
the water outlet end of the water inlet pipeline is connected with a cooling water inlet of the fuel cell, and the water inlet end of the water outlet pipeline is connected with a cooling water outlet of the fuel cell; the water outlet of the water outlet pipeline is connected with the first water inlet of the water inlet pipeline and the water inlet of the radiator 3, and the second water inlet of the water inlet pipeline is connected with the water outlet of the radiator 3;
the heat exchanger 6 is arranged in the water inlet pipeline;
the water pump 7 is arranged in the water outlet pipeline;
the heater 5 is arranged at a first water inlet of the water inlet pipeline;
the thermostat 6 is arranged in the water inlet pipeline, a first end of the thermostat 6 is connected with a first water inlet of the water inlet pipeline, a second end of the thermostat 6 is connected with a second water inlet of the radiator 3, and a third end of the thermostat 6 is connected with a water inlet of the heat exchanger 6; the thermostat 6 is used for controlling the conduction state between the first water inlet of the water inlet pipeline and the water outlet of the water inlet pipeline and the conduction state between the second water inlet of the water inlet pipeline and the water outlet of the water inlet pipeline.
When the fuel cell is in a cold start state, the cooling liquid path in the cooling liquid loop is formed by the outlet of a stack cooling water path, a water pump 7, a heater 5, a thermostat 6, a heat exchanger 7 and the inlet of the stack cooling water path; when the fuel cell is in a normal starting state, the cooling liquid path in the cooling liquid loop is formed by the outlet of the stack cooling water path, the water pump 7, the radiator 3, the thermostat 6, the heat exchanger 7 and the inlet of the stack cooling water path.
The working states of the first three-way electromagnetic valve 2, the second three-way electromagnetic valve 4 and the air compressor 1 can be controlled by a controller, the controller can be a vehicle control unit HCU or other controllers, when the controller is a vehicle control unit, the output end of the vehicle control unit is connected with the control ends of the first three-way electromagnetic valve 2, the second three-way electromagnetic valve 4 and the proportional valve 16, and the output end of the vehicle control unit is used for providing control signals for controlling the working states of the first three-way electromagnetic valve 2, the second three-way electromagnetic valve 4 and the proportional valve 16 and controlling the first three-way electromagnetic valve and the second three-way electromagnetic valve 4 to switch the working states during cold start, so that the gas flowing out of the air compressor 1 flows into a fuel cell after not passing through the radiator 3 and the heat exchanger 7.
In addition, the exhaust gas output from the exhaust outlet of the fuel cell has a higher temperature, and in order to prevent heat waste, the heat of the part of gas can be recovered, so, referring to fig. 3, the above scheme may further include:
the air inlet end of the air return branch 9 is connected to the exhaust branch 10 of the fuel cell, and the air outlet end of the air return branch 9 is connected with the air inlet end of the air compressor 1; the inlet end of the air return branch 9 is connected to the exhaust branch 10, the outlet end of the air return branch 9 is connected to the inlet end of the air compressor 1, and the air return branch 9 is used for introducing the gas exhausted from the fuel cell into the air compressor 1 side, because the temperature of the exhaust gas exhausted from the fuel cell after the hot air output by the intercooler (the intercooler in the radiator 3) heats the electric stack in the fuel cell is still far higher than the temperature of the outside atmosphere, that is, the temperature is far higher than the temperature of the gas collected by the air compressor 1 from the external environment, in order to recycle the heat, in the scheme, the high-temperature exhaust gas exhausted from the fuel cell flows back to the front part of the air compressor 1 again, so that the high-temperature exhaust gas enters the electric stack after being compressed by the air compressor 1 again, and circulates in a reciprocating manner;
the switch valve 11 is used for controlling the conduction state between the air outlet end of the exhaust branch 10 and the first exhaust port and the conduction state between the air outlet end of the air return branch 9 and the first exhaust port; the setting form of the switch valve 11 can be set according to the user's requirement, as long as it is ensured that the waste gas of the fuel cell can be discharged out of the fuel cell heating system through the exhaust branch 103, and if necessary, the waste gas of the fuel cell can be controlled to enter the air compressor 1 through the return branch 9.
Further, referring to fig. 4, in order to filter the impurities in the air and prevent the impurities in the air from entering the fuel cell, in the technical solution disclosed in the above embodiment of the present application, the fuel cell heating system may further include: a filter 12 and a gas mixing valve 13;
the filter 12 is connected with the air compressor 1 through the air mixing valve 13, and after the air in the air flows through the filter 12, the filter 12 can filter out impurities such as solid particles and the like in the air;
the air return branch 9 is connected with the air compressor 1 through the air mixing valve 13, when the air return branch 9 is opened, high-temperature gas flowing out of the air return branch 9 is mixed with external air through the air mixing valve 13, and the mixed gas enters the air compressor 1 again, so that the gas quantity in the fuel cell can be controlled more accurately through the air compressor 1.
Referring to fig. 5, in the solution disclosed in the embodiment of the present application, the switching valve 11 may include:
a first solenoid valve 111 and a second solenoid valve 112, wherein the second solenoid valve 112 may be a back pressure valve;
the first electromagnetic valve 111 is arranged on the exhaust branch 10, the second electromagnetic valve 112 is arranged on the return air branch 9, the air inlet end of the return air branch 9 is connected to the exhaust branch 10 between the first electromagnetic valve 111 and the first exhaust port of the fuel cell, when the first electromagnetic valve 111 is opened and the second electromagnetic valve 112 is closed, the exhaust gas discharged by the fuel cell directly passes through the exhaust branch 10 to be discharged out of the fuel cell heating system, and when the first electromagnetic valve 111 is closed and the second electromagnetic valve 112 is opened, the exhaust gas discharged by the fuel cell directly passes through the return air branch 9 to flow into the air compressor 1 again.
Of course, referring to fig. 6, this application can also adopt a third three-way solenoid valve as switching valve 11, promptly switching valve 11 is the third three-way solenoid valve, the third three-way solenoid valve set up in exhaust branch 10's the end of giving vent to anger, the first port and the second port of third three-way solenoid valve set up in the exhaust pipe, the third port of third three-way solenoid valve with the inlet end of return air branch 9 links to each other, with the controller that third three-way solenoid valve links to each other can be controlled as required the conducting state between the first port of third three-way solenoid valve, second port and the third port.
Further, in order to realize the emergency purge of the fuel cell, referring to fig. 7, the foregoing solution may further include:
the gas outlet of the high-pressure gas cylinder 14 is connected with the air inlet of the fuel cell, an on-off valve 15 and a proportional valve 16 can be arranged between the high-pressure gas cylinder 14 and the air inlet of the fuel cell, the on-off valve 15 is used for controlling the on-off between the gas outlet of the high-pressure gas cylinder 14 and the air inlet of the fuel cell, the proportional valve 16 is used for controlling the gas flow and pressure of the high-pressure gas cylinder 14 flowing into the fuel cell, and the high-pressure gas cylinder 14 is a fuel cylinder for providing combustible gas for the fuel cell or a brake cylinder for providing brake energy for a vehicle brake system.
According to the scheme, when the air compressor 1 cannot work normally and needs to purge the fuel cell, the on-off valve 15 is controlled to be opened, the proportional valve 16 is opened, the flow of the combustible gas flowing into the fuel cell is adjusted by adjusting the opening of the proportional valve 16, and therefore the combustible cell is purged by the high-pressure combustible gas, moisture in the combustible cell is purged, and the emergency purging of the fuel cell is achieved.
According to the technical scheme disclosed by the embodiment of the application, the hot air output by the air compressor 1 is subjected to heat transfer with the catalyst layer (electric pile position) of the fuel cell by adopting the direct high-power large-flow pressurization technology of the air compressor 1, so that the heating time is shortened. And moreover, the heat is recovered by adopting a fuel cell tail gas recirculation structure, so that the energy is saved. And the monolithic voltage of the galvanic pile is controlled below 0.8V through the controller, so that the voltage during startup can be reduced while the rapid cold start is ensured, and the reliability of the membrane electrode is improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A fuel cell heating system, comprising:
an air compressor;
the first end of the first three-way electromagnetic valve is connected with the air outlet of the air compressor, and the second end of the first three-way electromagnetic valve is connected with the air inlet of the fuel cell through an air pipeline;
the air inlet end of the radiator is connected with the third end of the first three-way electromagnetic valve, and the air outlet end of the radiator is connected with the air inlet of the fuel cell;
the second three-way electromagnetic valve is arranged in the air pipeline, and the first end of the second three-way electromagnetic valve is connected with the air outlet of the radiator and the third end of the first three-way electromagnetic valve; the second end of the second three-way electromagnetic valve is connected with an air inlet of the fuel cell;
the cooling liquid heating loop is used for carrying out heat exchange with a heat exchanger, the air inlet end of the cooling liquid heating loop is connected with the third end of the second three-way electromagnetic valve, and the air outlet end of the cooling liquid heating loop is connected with the air inlet of the fuel cell;
a heat exchanger located in a coolant loop in the fuel cell heating system for effecting heat exchange between a high temperature gas in the coolant heating loop and a coolant in the coolant loop.
2. The fuel cell heating system of claim 1, wherein the coolant loop, in addition to the heat exchanger, further comprises:
the water outlet end of the water inlet pipeline is connected with a cooling water inlet of the fuel cell, and the water inlet end of the water outlet pipeline is connected with a cooling water outlet of the fuel cell; the water outlet of the water outlet pipeline is connected with the first water inlet of the water inlet pipeline and the water inlet of the radiator, and the second water inlet of the water inlet pipeline is connected with the water outlet of the radiator;
the heat exchanger is arranged in the water inlet pipeline;
the water pump is arranged in the water outlet pipeline;
the heater is arranged at a first water inlet of the water inlet pipeline;
the thermostat is arranged in the water inlet pipeline, a first end of the thermostat is connected with a first water inlet of the water inlet pipeline, a second end of the thermostat is connected with a second water inlet of the radiator, and a third end of the thermostat is connected with a water inlet of the heat exchanger; the thermostat is used for controlling the conduction state between the first water inlet of the water inlet pipeline and the water outlet of the water inlet pipeline and the conduction state between the second water inlet of the water inlet pipeline and the water outlet of the water inlet pipeline.
3. The fuel cell heating system according to claim 1, further comprising:
the output end of the vehicle control unit is connected with the control ends of the first three-way electromagnetic valve, the second three-way electromagnetic valve and the air compressor, and the output end of the vehicle control unit is used for providing control signals for controlling the working states of the first three-way electromagnetic valve, the second three-way electromagnetic valve and the air compressor.
4. The fuel cell heating system according to claim 1, further comprising:
the air inlet end of the air return branch is connected to the exhaust branch of the fuel cell, and the air outlet end of the air return branch is connected with the air inlet end of the air compressor;
and the switch valve is used for controlling the conduction state between the air outlet end of the exhaust branch and the tail outlet of the fuel cell, and the conduction state between the air outlet end of the air return branch and the tail outlet.
5. The fuel cell heating system according to claim 4, further comprising:
a filter and a gas mixing valve;
the filter is connected with the air compressor through the air mixing valve;
and the air return branch is connected with the air compressor through the air mixing valve.
6. The fuel cell heating system according to claim 4, wherein the on-off valve includes:
a first solenoid valve and a second solenoid valve;
the first electromagnetic valve is arranged on the exhaust branch, the second electromagnetic valve is arranged on the air return branch, and the air inlet end of the air return branch is connected to the exhaust branch between the first electromagnetic valve and the tail exhaust port of the fuel cell.
7. The fuel cell heating system according to claim 4, wherein the on-off valve is a third three-way valve, the third three-way valve is disposed at an air outlet end of the air exhaust branch, a first port and a second port of the third three-way valve are disposed in the air exhaust line, and a third port of the third three-way valve is connected to an air inlet end of the air return branch.
8. The fuel cell heating system according to claim 1, further comprising:
and the air outlet of the high-pressure air bottle is connected with the air inlet of the fuel cell.
9. The fuel cell heating system according to claim 8, further comprising:
the high-pressure gas cylinder is a fuel cylinder for supplying combustible gas to a fuel cell or a brake cylinder for supplying braking energy to a vehicle braking system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920828395.2U CN210866371U (en) | 2019-06-03 | 2019-06-03 | Fuel cell heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920828395.2U CN210866371U (en) | 2019-06-03 | 2019-06-03 | Fuel cell heating system |
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| CN210866371U true CN210866371U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920828395.2U Active CN210866371U (en) | 2019-06-03 | 2019-06-03 | Fuel cell heating system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659169A (en) * | 2021-08-18 | 2021-11-16 | 潍柴动力股份有限公司 | Fuel cell engine and cold start system and method thereof |
| WO2022135374A1 (en) * | 2020-12-25 | 2022-06-30 | 中国第一汽车股份有限公司 | System and method for controlling cold start of fuel cell of vehicle |
| CN114976110A (en) * | 2022-06-27 | 2022-08-30 | 中国第一汽车股份有限公司 | Fuel cell and low-temperature environment operation control method |
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2019
- 2019-06-03 CN CN201920828395.2U patent/CN210866371U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135374A1 (en) * | 2020-12-25 | 2022-06-30 | 中国第一汽车股份有限公司 | System and method for controlling cold start of fuel cell of vehicle |
| CN113659169A (en) * | 2021-08-18 | 2021-11-16 | 潍柴动力股份有限公司 | Fuel cell engine and cold start system and method thereof |
| CN114976110A (en) * | 2022-06-27 | 2022-08-30 | 中国第一汽车股份有限公司 | Fuel cell and low-temperature environment operation control method |
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