CN109686999A - The device and method of low-temperature cool starting - Google Patents
The device and method of low-temperature cool starting Download PDFInfo
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- CN109686999A CN109686999A CN201811600982.2A CN201811600982A CN109686999A CN 109686999 A CN109686999 A CN 109686999A CN 201811600982 A CN201811600982 A CN 201811600982A CN 109686999 A CN109686999 A CN 109686999A
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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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
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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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04268—Heating of fuel cells during the start-up of the 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
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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The present invention provides a kind of device and method of low-temperature cool starting, cooling system and heater are arranged between the cooling liquid outlet of fuel cell pile and cooling liquid inlet in the device, cooling system and fuel cell pile form the main circulation loop of coolant liquid, heater and fuel cell pile form the secondary circulation loop of coolant liquid, switching device is set in main circulation loop and secondary circulation loop respectively, and be arranged and switching device, the control device of heater connection, low-temperature cool starting state is in fuel battery engines, it controls switching device and the circulation loop of coolant liquid is switched to secondary circulation loop by main circulation loop, and it controls heater and only the coolant liquid in secondary circulation loop is heated.Only a small amount of coolant liquid existing in secondary circulation loop is heated using heater, by constantly recycling, the temperature of fuel cell pile quickly can have been risen into heap temperature, shortens the cold start-up time.
Description
Technical field
The invention belongs to field of fuel cell technology more particularly to a kind of device and methods of low-temperature cool starting.
Background technique
A variety of advantages such as fuel cell has power density high, and switching capability is good, but its low-temperature cool starting performance is poor.
In the prior art in order to solve the problems, such as that fuel cell low-temperature cool starting performance is poor, using the cooling in fuel cell
A heater is added in system first operates cooling system in the low-temperature cool starting stage, forms the circulation loop of coolant liquid,
The coolant liquid in circulation loop is heated by the heater of addition, so that the temperature of coolant liquid rises to combustion in circulation loop
That expects battery plays heap temperature.
This heating method needs the long period that the coolant liquid in entire circulation loop could be heated to fuel cell electricity
Heap plays heap temperature.Cause the low-temperature cool starting time long.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of device and method of low-temperature cool starting, to solve existing skill
The problem of art low-temperature cool starting time length.
Technical solution is as follows:
The present invention provides a kind of device of low-temperature cool starting, is applied to fuel battery engine system, comprising:
It is set in fuel battery engine system between the cooling liquid outlet and cooling liquid inlet of fuel cell pile
Cooling system, the cooling system and the fuel cell pile form the main circulation loop of coolant liquid；
The heater being set between the cooling liquid outlet and cooling liquid inlet of the fuel cell pile, the heater
The secondary circulation loop of coolant liquid is formed with the fuel cell pile；
Switching device is respectively arranged on the main circulation loop and the secondary circulation loop；
The control device connecting with the heater, switching device, the control device are used in fuel battery engines
In low-temperature cool starting state, the switching device is controlled by the circulation loop of coolant liquid, secondary circulation is switched to by main circulation loop
Circuit simultaneously controls the heater and heats to coolant liquid.
Preferably, the switching device is triple valve, wherein on the main circulation loop and the secondary circulation loop respectively
Being provided with switching device includes:
First triple valve is set at the cooling liquid outlet of the fuel cell pile；The input terminal of first triple valve
The cooling liquid outlet of the fuel cell pile is connected, the first output end of first triple valve connects the cooling system
The second output terminal of first end, first triple valve connects the first end of the heater；
Second triple valve is set at the cooling liquid inlet of the fuel cell pile；The input terminal of second triple valve
The cooling liquid inlet of the fuel cell pile is connected, the first output end of second triple valve connects the cooling system
The second output terminal of second end, first triple valve connects the second end of the heater.
Preferably, the switching device is switch valve；
Wherein, being respectively arranged with switching device on the main circulation loop and the secondary circulation loop includes:
A switch valve is respectively set at the cooling system both ends of the main circulation loop；
A switch valve is respectively set at the heater both ends of the secondary circulation loop.
Preferably, further includes:
It is arranged at the cooling liquid outlet or cooling liquid outlet position of the fuel cell pile, connects with the control device
The temperature sensor connect；
The temperature sensor is used to detect the temperature of the fuel cell pile, and is sent to the control device, makes
It obtains the control device and determines whether the fuel battery engines are in low temperature cold according to the temperature of the fuel cell pile
Starting state.
Preferably, the control device is also used to:
Determining that the fuel battery engines are not at low-temperature cool starting state, then controlling the switching device will cool down
The circulation loop of liquid is switched to main circulation loop by secondary circulation loop.
Preferably, the cooling system includes:
The radiator being set on the main circulation loop, and the swelling water for main circulation loop supplement coolant liquid
Case.
The present invention also provides a kind of low-temperature cool starting methods based on device described above, comprising:
In fuel battery engines starting, determine whether fuel battery engines are in low-temperature cool starting state；
If it is determined that the fuel battery engines are in low-temperature cool starting state, then control by the circulation loop of coolant liquid by
Main circulation loop is switched to secondary circulation loop and controls heater and heats to coolant liquid.
Preferably, the circulation loop of coolant liquid is switched to secondary circulation loop by main circulation loop by the control, comprising:
Switching device on control main circulation loop disconnects the connection for the cooling system connecting with fuel cell pile both ends；
Control the connection for the heater that the switching device conducting on secondary circulation loop is connect with fuel cell pile both ends.
Preferably, the circulation loop of coolant liquid is switched to secondary circulation loop and is controlled and added by the control by main circulation loop
After hot device heats coolant liquid further include:
Determine that fuel battery engines are not at low-temperature cool starting state, then the switching device controlled on main circulation loop is led
The connection of the logical cooling system being connect with fuel cell pile both ends, and control the switching device on secondary circulation loop and disconnect and combustion
Expect the connection of the heater of battery stack both ends connection；
The cooling system is controlled to cool down the coolant liquid in the main circulation loop.
Preferably, whether the determining fuel battery engines are in low-temperature cool starting state and include:
Detect the temperature of fuel cell pile；
Judge whether the temperature of fuel cell pile is less than preset temperature；
If the temperature of fuel cell pile is less than preset temperature, it is determined that fuel battery engines are in low-temperature cool starting shape
State.
Compared with prior art, above-mentioned technical proposal provided by the invention has the advantages that
From above-mentioned technical proposal it is found that cooling system and heater are arranged at the cold of fuel cell pile in the application
But between liquid outlet and cooling liquid inlet, the main circulation loop of cooling system and fuel cell pile formation coolant liquid, heater
The secondary circulation loop of coolant liquid is formed with fuel cell pile, respectively the setting switching dress in main circulation loop and secondary circulation loop
It sets, and the control device connecting with switching device, heater is set, be in low-temperature cool starting state in fuel battery engines,
It controls switching device and the circulation loop of coolant liquid is switched to secondary circulation loop by main circulation loop, and control heater only to pair
Coolant liquid heating in circulation loop.Due to the coolant liquid in secondary circulation loop and it is not passed through cooling system, cooling system
In radiator will not cool down again to the coolant liquid after heating, and the expansion tank in cooling system will not be recycled back to for pair
Road supplements coolant liquid, will not reduce the temperature of coolant liquid in secondary circulation loop since the temperature for the coolant liquid newly supplemented is low, because
This, only heats a small amount of coolant liquid existing in secondary circulation loop using heater, by constantly recycling, can quickly by
The temperature of fuel cell pile has risen to heap temperature, shortens the cold start-up time.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of fuel cell low-temperature cool starting device in the prior art；
Fig. 2 is a kind of structural schematic diagram of low-temperature cool starting device provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another low-temperature cool starting device provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of low-temperature cool starting method provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the prior art, in order to solve the problems, such as that cold boot of fuel cell performance is poor, using the cooling system in fuel cell
A heater is added in system, it is shown in Figure 1, for the knot of the low-temperature cool starting device of fuel battery engines in the prior art
Structure schematic diagram；Including the cooling system being made of radiator and expansion tank；It is arranged between radiator and expansion tank, one
End is connect with radiator, the heater of the cooling liquid inlet connection of the other end and fuel cell pile.
Fuel battery engines are in low-temperature cool starting state, first cooling system are made to start running, and form following for coolant liquid
Loop back path heats the coolant liquid in circulation loop by the heater of addition, coolant liquid circulation to fuel cell pile
Afterwards, the temperature of fuel cell pile is promoted to have reached heap temperature, so that fuel cell pile at low temperatures can
Quick start.But due to including the device to cool down to coolant liquid, such as radiator in cooling system, so that heater pair
Radiator cools down to coolant liquid while coolant liquid heats, therefore system power dissipation is big and coolant liquid heating is slow, when leading to cold start-up
Between it is long.
And the device including supplement coolant liquid in cooling system, such as expansion tank, after supplementing coolant liquid for cooling circuit, by
It is low compared to the coolant temperature in cooling circuit where heater in the coolant temperature newly supplemented, therefore, aggravate heating
The workload of device causes the cold start-up time long.
In view of this, present embodiments providing a kind of device of low-temperature cool starting, it is applied in fuel battery engine system,
It include at least one fuel cell pile, referring to fig. 2, the dress of low-temperature cool starting in the present embodiment in fuel cell system of transmitters
It sets and includes:
It is set in fuel cell system of transmitters between the cooling liquid outlet and cooling liquid inlet of fuel cell pile 1
Cooling system 2；
The both ends of cooling system 2 are connect with the cooling liquid outlet of fuel cell pile 1 and cooling liquid inlet respectively, from cooling
Liquid exports derived coolant liquid and flows into fuel cell pile 1 after the cooling of cooling system 2, then through cooling liquid inlet, right
Fuel cell pile 1 cools down, and avoids generating amount of heat in 1 course of work of fuel cell pile and leading to fuel cell pile 1
Temperature increases.
The circulation loop for the coolant liquid being made of fuel cell pile 1 and cooling system 2 is known as main circulation loop.
In the present embodiment, cooling system 2 includes the radiator being set on main circulation loop, and returns for the major cycle
The expansion tank of road supplement coolant liquid.Radiator is for cooling down to coolant liquid.Wherein, radiator is fan radiator.
Coolant liquid can be the mixed liquor of ethylene glycol and deionized water, or water.
The heater 3 being set between the cooling liquid outlet and cooling liquid inlet of fuel cell pile 1；
In the present embodiment, 3 both ends of heater also connect with the cooling liquid outlet of fuel cell pile 1 and cooling liquid inlet respectively
It connects, realizes that heater 3 is arranged in parallel with cooling system 2.
Coolant liquid is after the heating of heater 3 derived from the cooling liquid outlet of fuel cell pile 1, then passes through fuel electricity
The cooling liquid inlet of pond pile 1 flows into fuel cell pile 1, heats up to fuel cell pile 1, so that fuel cell pile 1
The heap temperature from rising to low temperature, so that fuel cell pile at low temperatures being capable of quick start.
The circulation loop for the coolant liquid being made of fuel cell pile 1 and heater 3 is known as secondary circulation loop.
In the present embodiment, heater 3 for heating the coolant liquid for flowing through heater, the heater 3 of use can with it is existing
The heater model being added in technology cooling system is identical, to reduce system hardware cost.
It is, of course, also possible to the concrete model of heater 3 is not limited using the heater of other models in the present embodiment,
As long as can be realized the heating to coolant liquid.
Switching device 4a is provided on the pair circulation loop；
Switching device 4b is provided on the main circulation loop；
The control device 5 being connect with heater 3, switching device 4a and switching device 4b；
Control device 5 is used to be in low-temperature cool starting state in fuel battery engines, controls switching device 4a and switching
The circulation loop of coolant liquid is switched to secondary circulation loop by main circulation loop and controls heater 3 and carried out to coolant liquid by device 4b
Heating.
Two circulation loops can be formed in the device of the low-temperature cool starting of the present embodiment, one is by fuel cell pile
1 and cooling system 2 constitute main circulation loop, another is that the pair being made of fuel cell pile 1 with heater 3 is recycled back to
Road.
Optionally, the device of low-temperature cool starting further includes connecting with the cooling liquid outlet of fuel cell pile 1 in the present embodiment
The electrodynamic pump 6 connect.
Using the swabbing action of electrodynamic pump 6, coolant liquid is extracted from the cooling liquid outlet of fuel cell pile 1, so that extracting
Coolant liquid out, which flows through, enters fuel cell from the cooling liquid inlet of fuel cell pile 1 after main circulation loop or secondary circulation loop
Pile 1.
Main circulation loop and secondary circulation loop do not work at the same time, and realize two by switching device 4a and switching device 4b
Switching between circulation loop.
Specifically, being in low-temperature cool starting state in fuel battery engines, the circulation loop of coolant liquid is by fuel cell
The main circulation loop that pile and cooling system are constituted switches to the secondary circulation loop being made of fuel cell pile and heater, benefit
The coolant liquid in secondary circulation loop is only heated with heater 3.
Due to the coolant liquid in secondary circulation loop and it is not passed through the cooling system in main circulation loop, in cooling system
Radiator will not cool down again to the coolant liquid after heating, and the expansion tank in cooling system will not be secondary circulation loop
It supplements coolant liquid, and then the temperature of coolant liquid in secondary circulation loop will not be reduced since the temperature for the coolant liquid newly supplemented is low,
Therefore, only a small amount of coolant liquid existing in secondary circulation loop is heated using heater, it, can be quick by constantly recycling
The temperature of fuel cell pile has been risen into heap temperature, has reduced the cold start-up time.
And the coolant liquid in secondary circulation loop is being heated using heater, and make the temperature of fuel cell pile
It increases, after being not at low-temperature cool starting state, controls what the circulation loop of coolant liquid was made of fuel cell pile and heater
Secondary circulation loop switches to the main circulation loop being made of fuel cell pile and cooling system.
Optionally, switching device can be and be made of triple valve in the present embodiment, be also possible to be made of switch valve.
Be described below switching device be different form when, the structure of the device of low-temperature cool starting；
The first, switching device is made of two triple valves.
First triple valve is set at the cooling liquid outlet of fuel cell pile 1；The input terminal of first triple valve connects
The cooling liquid outlet of the fuel cell pile is connect, the first output end of first triple valve connects the of the cooling system
One end, the first end of the second output terminal connection heater 3 of first triple valve；
Second triple valve is set at the cooling liquid inlet of the fuel cell pile；The input terminal of second triple valve
The cooling liquid inlet of the fuel cell pile is connected, the first output end of second triple valve connects the cooling system
Second end, the second end of the second output terminal connection heater 3 of first triple valve.
It is in low-temperature cool starting state in fuel battery engines, input terminal and the second output terminal of the first triple valve are led
It is logical, meanwhile, the input terminal of the second triple valve is connected with second output terminal；The circulation loop of coolant liquid is from fuel cell electricity at this time
The cooling liquid outlet of heap flows out, and after flowing through heater, then flows into from the coolant inlet of fuel cell pile.
After being heated coolant liquid so that fuel battery engines are not at low-temperature cool starting state using heater, first
The input terminal of triple valve is connected with the first output end, meanwhile, the input terminal of the second triple valve is connected with the first output end；It is cold at this time
But the circulation loop of liquid is to flow out from the cooling liquid outlet of fuel cell pile, after flowing through cooling system, then it is electric from fuel cell
The coolant inlet of heap flows into.
In practical applications, using the switching of control device control the first triple valve and the second triple valve, and then master is controlled
Switching between circulation loop and secondary circulation loop.
Optionally, control device can use entire car controller or engine controller, be also possible to low-temperature cool starting
The controller being arranged in device.
Second, switching device is made of four switch valves, is respectively set at the heater both ends of the secondary circulation loop
A switch valve is respectively set at the cooling system both ends of the main circulation loop in one switch valve.Switch valve can be electromagnetism
Valve.
It is shown in Figure 3, it is the device for the low-temperature cool starting that switching device is made of four switch valves in the present embodiment
Structural schematic diagram.
The first end of one end connection heater 3 of first switch valve 41, the other end connection fuel electricity of first switch valve 41
The cooling liquid outlet of pond pile 1；
The second end of one end connection heater 3 of second switch valve 42, the other end connection fuel electricity of second switch valve 42
The cooling liquid inlet of pond pile 1；
The first end of one end connection cooling system 2 of third switch valve 43, the other end of third switch valve 43 connect fuel
The cooling liquid outlet of battery stack 1；
The second end of one end connection cooling system 2 of 4th switch valve 44, the other end of the 4th switch valve 44 connect fuel
The cooling liquid inlet of battery stack 1.
Utilize the temperature sensor at the cooling liquid outlet for being set to fuel cell pile or cooling hot entrance location, detection
The temperature of fuel cell pile；The temperature for the fuel cell pile that will test is sent to control device；
The temperature of control device fuel cell pile determines whether fuel battery engines are in low-temperature cool starting rank
Section.
When determining that fuel battery engines are in low-temperature cool starting state, control device controls first switch valve 41 and the
The conducting of two switch valves 42, third switch valve 43 and the 4th switch valve 44 disconnect, while starting heater 3；Coolant liquid is followed at this time
Loop back path is to flow out from the cooling liquid outlet of fuel cell pile, after flowing through heater, then from the coolant liquid of fuel cell pile
Entrance flows into.
When being heated coolant liquid so that fuel battery engines are not at low-temperature cool starting state using heater, control
Device controls third switch valve 43 and the conducting of the 4th switch valve 44, and first switch valve 41 and second switch valve 42 are disconnected, opened simultaneously
Dynamic cooling system 2；The circulation loop of coolant liquid is to flow out from the cooling liquid outlet of fuel cell pile at this time, flows through cooling system
Afterwards, then from the cooling liquid inlet of fuel cell pile it flows into.
Referring to Fig. 3 it is found that the path for the secondary circulation loop being made of fuel cell pile and heater is less than by fuel electricity
The path for the main circulation loop that pond pile and cooling system are constituted, and then the volume of the coolant liquid flowed in secondary circulation loop is less than
The volume of the coolant liquid flowed in main circulation loop, therefore, only to coolant liquid fewer in secondary circulation loop in the present embodiment
Heated, compared to the prior art in coolant liquid more in main circulation loop is heated, can quickly increase cooling
The temperature of liquid, and then shorten the low-temperature cool starting time.
From above-mentioned technical proposal it is found that cooling system and heater are arranged at fuel cell pile in the present embodiment
Between cooling liquid outlet and cooling liquid inlet, the main circulation loop of cooling system and fuel cell pile formation coolant liquid, heating
Device and fuel cell pile form the secondary circulation loop of coolant liquid, and switching is arranged in main circulation loop and secondary circulation loop respectively
Device, and the control device connecting with switching device is set, in low-temperature cool starting stage control switching device following coolant liquid
Loop back path is switched to secondary circulation loop by main circulation loop, is only heated to the coolant liquid in secondary circulation loop using heater.By
Coolant liquid in secondary circulation loop is simultaneously not passed through cooling system, therefore radiator will not be to the cooling after heating in cooling system
Liquid cools down again, and expansion tank will not supplement coolant liquid for secondary circulation loop in cooling system, will not be due to newly supplementing
The temperature of coolant liquid is low and reduces the temperature of coolant liquid in secondary circulation loop, therefore, using heater only in secondary circulation loop
Existing a small amount of coolant liquid is heated, and by constantly recycling, the temperature of fuel cell pile quickly can have been risen to heap temperature
Degree shortens the cold start-up time.
A kind of method of low-temperature cool starting is additionally provided in the present embodiment, based on Fig. 2, low-temperature cool starting shown in Fig. 3
Device, it is shown in Figure 4, the embodiment the following steps are included:
S401, fuel battery engines starting when, determine whether fuel battery engines are in low-temperature cool starting state；
If it is determined that the fuel battery engines are in low-temperature cool starting state, S402 is thened follow the steps；
A kind of implementation is by being arranged at the cooling liquid inlet or cooling liquid outlet position of fuel cell pile
Temperature sensor detects the temperature of fuel cell pile, judges whether the temperature of fuel cell pile is less than preset temperature；If combustion
Expect that the temperature of battery stack is less than preset temperature, it is determined that fuel battery engines are in low-temperature cool starting state.
Another implementation are as follows: the letter of current fuel cell engine status is obtained from engine controller
Breath, according to the information of the fuel battery engines status got, determines whether fuel battery engines are in low temperature cold
Starting state.
It is, of course, also possible to the information of current fuel cell engine status be obtained from entire car controller, according to obtaining
The information for the fuel battery engines status got, determines whether fuel battery engines are in low-temperature cool starting state.
The circulation loop of coolant liquid is switched to secondary circulation loop by main circulation loop and controls heater pair by S402, control
Coolant liquid is heated.
If it is determined that fuel battery engines are in low-temperature cool starting state, then the switching device controlled on main circulation loop is disconnected
The connection for the cooling system connecting with fuel cell pile both ends is opened, meanwhile, control the switching device conducting on secondary circulation loop
The connection for the heater being connect with fuel cell pile both ends；And it controls heater and the coolant liquid on secondary circulation loop is added
Heat.
In the present embodiment, coolant liquid is heated by heater so that fuel battery engines are not at low temperature cold and open
After dynamic state, i.e., starting fluid battery engine will generate big calorimetric in such cases in fuel cell pile operational process
Amount.The connection for the cooling system that switching device conducting on control main circulation loop is connect with fuel cell pile both ends, and control
Make the connection that the switching device on secondary circulation loop disconnects the heater connecting with fuel cell pile both ends；And it controls described cold
But system cools down the coolant liquid in the main circulation loop, to realize to generating in fuel cell pile operational process
The purpose of amount of heat heat dissipation.
From above-mentioned technical proposal it is found that being in low-temperature cool starting state in fuel battery engines in the present embodiment, disconnect
The connection for the cooling system being connect with fuel cell pile both ends, and the heater connecting with fuel cell pile both ends is connected
Connection heats coolant liquid in the circulation loop being made of the fuel cell pile and the heater using heater.By
Coolant liquid in circulation loop only circulates between fuel cell pile and heater, without flowing through cooling system,
Therefore the radiator in cooling system will not cool down again to the coolant liquid after heating, and the expansion tank in cooling system is not yet
Coolant liquid can be supplemented for circulation loop, coolant liquid in circulation loop will not be reduced since the temperature for the coolant liquid newly supplemented is low
Temperature, and then only a small amount of coolant liquid existing in previous cycle circuit is heated using heater, it, can by constantly recycling
The temperature of fuel cell pile has quickly been risen to heap temperature, the cold start-up time is shortened.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.The device provided for embodiment
For, since it is corresponding with the method that embodiment provides, so being described relatively simple, related place is said referring to method part
It is bright.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute
State in the process, method, article or equipment of element that there is also other identical elements.
The foregoing description of the disclosed embodiments can be realized those skilled in the art or using the present invention.To this
A variety of modifications of a little embodiments will be apparent for a person skilled in the art, and the general principles defined herein can
Without departing from the spirit or scope of the present invention, to realize in other embodiments.Therefore, the present invention will not be limited
It is formed on the embodiments shown herein, and is to fit to consistent with the principles and novel features disclosed in this article widest
Range.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of device of low-temperature cool starting, which is characterized in that be applied to fuel battery engine system, comprising:
It is set to the cooling in fuel battery engine system between the cooling liquid outlet and cooling liquid inlet of fuel cell pile
System, the cooling system and the fuel cell pile form the main circulation loop of coolant liquid；
The heater being set between the cooling liquid outlet and cooling liquid inlet of the fuel cell pile, the heater and institute
State the secondary circulation loop that fuel cell pile forms coolant liquid；
Switching device is respectively arranged on the main circulation loop and the secondary circulation loop；
The control device connecting with the heater, switching device, the control device in fuel battery engines for being in
Low-temperature cool starting state controls the switching device for the circulation loop of coolant liquid and is switched to secondary circulation loop by main circulation loop
And it controls the heater and coolant liquid is heated.
2. the apparatus according to claim 1, which is characterized in that the switching device is triple valve, wherein the major cycle
Being respectively arranged with switching device on circuit and the secondary circulation loop includes:
First triple valve is set at the cooling liquid outlet of the fuel cell pile；The input terminal of first triple valve connects
First output end of the cooling liquid outlet of the fuel cell pile, first triple valve connects the first of the cooling system
End, the second output terminal of first triple valve connect the first end of the heater；
Second triple valve is set at the cooling liquid inlet of the fuel cell pile；The input terminal of second triple valve connects
First output end of the cooling liquid inlet of the fuel cell pile, second triple valve connects the second of the cooling system
End, the second output terminal of first triple valve connect the second end of the heater.
3. the apparatus according to claim 1, which is characterized in that the switching device is switch valve；
Wherein, being respectively arranged with switching device on the main circulation loop and the secondary circulation loop includes:
A switch valve is respectively set at the cooling system both ends of the main circulation loop；
A switch valve is respectively set at the heater both ends of the secondary circulation loop.
4. device according to claim 1 to 3, which is characterized in that further include:
It is arranged at the cooling liquid outlet or cooling liquid outlet position of the fuel cell pile, is connect with the control device
Temperature sensor；
The temperature sensor is used to detect the temperature of the fuel cell pile, and is sent to the control device, so that institute
It states control device and determines whether the fuel battery engines are in low-temperature cool starting according to the temperature of the fuel cell pile
State.
5. device according to claim 4, which is characterized in that the control device is also used to:
It is determining that the fuel battery engines are not at low-temperature cool starting state, is then controlling the switching device for coolant liquid
Circulation loop is switched to main circulation loop by secondary circulation loop.
6. device according to claim 1 to 3, which is characterized in that the cooling system includes:
The radiator being set on the main circulation loop, and the expansion tank for main circulation loop supplement coolant liquid.
7. a kind of low-temperature cool starting method based on claim 1-6 any one described device characterized by comprising
In fuel battery engines starting, determine whether fuel battery engines are in low-temperature cool starting state；
If it is determined that the fuel battery engines are in low-temperature cool starting state, then control is followed the circulation loop of coolant liquid by master
Loop back path is switched to secondary circulation loop and controls heater and heats to coolant liquid.
8. the method according to the description of claim 7 is characterized in that the control is returned the circulation loop of coolant liquid by major cycle
Road is switched to secondary circulation loop, comprising:
Switching device on control main circulation loop disconnects the connection for the cooling system connecting with fuel cell pile both ends；
Control the connection for the heater that the switching device conducting on secondary circulation loop is connect with fuel cell pile both ends.
9. method according to claim 7 or 8, which is characterized in that the control is followed the circulation loop of coolant liquid by master
Loop back path is switched to secondary circulation loop and controls after heater heats coolant liquid further include:
Determine that fuel battery engines are not at low-temperature cool starting state, then control on main circulation loop switching device conducting with
The connection of the cooling system of fuel cell pile both ends connection, and control the switching device on secondary circulation loop and disconnect and fuel electricity
The connection of the heater of pond pile both ends connection；
The cooling system is controlled to cool down the coolant liquid in the main circulation loop.
10. according to the method described in claim 9, it is characterized in that, whether the determining fuel battery engines are in low temperature
Cold start includes:
Detect the temperature of fuel cell pile；
Judge whether the temperature of fuel cell pile is less than preset temperature；
If the temperature of fuel cell pile is less than preset temperature, it is determined that fuel battery engines are in low-temperature cool starting state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811600982.2A CN109686999A (en) | 2018-12-26 | 2018-12-26 | The device and method of low-temperature cool starting |
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| CN201811600982.2A CN109686999A (en) | 2018-12-26 | 2018-12-26 | The device and method of low-temperature cool starting |
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| CN109686999A true CN109686999A (en) | 2019-04-26 |
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| CN201811600982.2A Pending CN109686999A (en) | 2018-12-26 | 2018-12-26 | The device and method of low-temperature cool starting |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110911715A (en) * | 2019-10-31 | 2020-03-24 | 浙江高成绿能科技有限公司 | Cold start method for fuel cell stack |
| CN111725536A (en) * | 2020-06-30 | 2020-09-29 | 上海捷氢科技有限公司 | System and method for rapid pre-cooling and auxiliary heating of fuel cell |
| CN112928303A (en) * | 2021-02-24 | 2021-06-08 | 上海捷氢科技有限公司 | Fuel cell thermal management system and fuel cell system |
| CN113097529A (en) * | 2021-04-01 | 2021-07-09 | 上海恒劲动力科技有限公司 | Fuel cell and internal circulation system thereof |
| CN113140749A (en) * | 2021-03-26 | 2021-07-20 | 苏州弗尔赛能源科技股份有限公司 | Low-temperature quick start control method and system for fuel cell |
| CN113140759A (en) * | 2021-04-15 | 2021-07-20 | 一汽解放汽车有限公司 | Hydrogen fuel cell cold start system and control method thereof |
| CN113285090A (en) * | 2021-04-08 | 2021-08-20 | 东风汽车集团股份有限公司 | Fuel cell thermal management system and control method thereof |
| CN114497625A (en) * | 2022-01-24 | 2022-05-13 | 广东国鸿氢能科技有限公司 | Heat circulation system of fuel cell |
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| CN113140759A (en) * | 2021-04-15 | 2021-07-20 | 一汽解放汽车有限公司 | Hydrogen fuel cell cold start system and control method thereof |
| CN114497625A (en) * | 2022-01-24 | 2022-05-13 | 广东国鸿氢能科技有限公司 | Heat circulation system of fuel cell |
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