CN110395143A - On-vehicle fuel heat management system and control method with cold start function - Google Patents
On-vehicle fuel heat management system and control method with cold start function Download PDFInfo
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- CN110395143A CN110395143A CN201810381424.5A CN201810381424A CN110395143A CN 110395143 A CN110395143 A CN 110395143A CN 201810381424 A CN201810381424 A CN 201810381424A CN 110395143 A CN110395143 A CN 110395143A
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- 239000000446 fuel Substances 0.000 title claims abstract description 194
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 78
- 239000002826 coolant Substances 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 23
- 239000000498 cooling water Substances 0.000 claims description 18
- 239000000110 cooling liquid Substances 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 7
- 238000005183 dynamical system Methods 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 230000005855 radiation Effects 0.000 abstract description 3
- 239000002918 waste heat Substances 0.000 abstract description 3
- 210000004027 cell Anatomy 0.000 description 142
- 230000001276 controlling effect Effects 0.000 description 13
- 230000007246 mechanism Effects 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 230000003197 catalytic effect Effects 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 238000007710 freezing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 5
- 239000012809 cooling fluid Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229920000557 Nafion® Polymers 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000003862 health status Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
- B60H1/06—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant directly from main radiator
-
- 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
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Fuel Cell (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of on-vehicle fuel heat management system with cold start function comprising powertrain platform thermal management unit, fuel cell main body thermal management unit and thermal management controller；The thermal management controller is connect with powertrain platform thermal management unit, fuel cell main body thermal management unit respectively, and the powertrain platform thermal management unit is connected with fuel cell main body thermal management unit；Also disclose a kind of control method.The present invention using fuel cell car under pure electric drive driving cycle DC/DC in powertrain platform, power control unit PCU, waste heat is that the fuel cell pile of cold-starting is needed to preheat caused by driving motor, not only reduce the radiation energy consumption of powertrain platform critical component, auxiliary electrical heater energy consumption necessary to heating up for fuel cell pile is also evaded, to effectively increase the utilization rate of electrical of power battery, the continual mileage of fuel cell car is extended.
Description
Technical field
The present invention relates to fuel cell power system thermal management technology field, and in particular to a kind of with cold start function
On-vehicle fuel heat management system and control method.
Background technique
Current auto industry Faced In Sustainable Development the double challenge of the severe energy and environment, develop new-energy automobile
It has been the common recognition in the whole world.New-energy automobile mainstream route includes pure electric automobile and fuel cell car.Wherein, fuel cell vapour
Vehicle is because with Zero-discharge non-pollution, energy density is high, course continuation mileage and orthodox car are suitable, fueling (compression hydrogen) time
The advantages that short, is unanimously considered in the industry the ultimate aim of auto industry.
In order to operate normally fuel cell car and keep the comfort taken, effective heat management is carried out very to vehicle
Necessity, and the heat management of fuel cell power system is then its key point.Fuel cell heat management system mainly includes fuel
Battery thermal management (predominantly fuel cell main body) and powertrain platform heat management (driving motor, power control unit PCU,
DC/DC) two parts.Wherein, the heat management one side temperature of fuel cell of fuel cell main body is lower, most heats
(~95%) needs coolant liquid to take away；On the other hand need to provide heat for fuel cell also in cold low temperature environment to assist
Its cold-starting.And cold boot of fuel cell problem has become one of the key technology bottleneck for hindering commercializing fuel cells,
It is the ultimate challenge of fuel cell car winter operation.
It is anti-when fuel cell starts in the low temperature environment lower than 0 DEG C when not taking any safeguard measure
Water caused by answering first can in Catalytic Layer inner icing, cause Catalytic Layer reactivity site capped and oxygen transmission by
There is rapid drawdown in resistance, voltage；When Catalytic Layer completely by ice cover and stack temperature do not rise to 0 DEG C or more also then can be in diffusion layer and stream
Freezing in road causes cold start-up to fail.On the other hand, the freezing process of Catalytic Layer will lead to catalyst layer and proton exchange membrane it
Between there is gap, while freezing/thawing circulation can cause platinum in the avalanche and densification and Catalytic Layer of Catalytic Layer microcellular structure
The roughening of particle causes electrochemical active surface to reduce and is difficult to restore, to cause permanently to fuel cell power generation performance
Property damage, and the cycle-index the how cold that open temperature lower bigger to cell damage.
The resolution policy of cold boot of fuel cell is divided into two classes at present: one kind be when pile is shut down using gas purging come
The water content of fuel cell membrane electrode is reduced, so that the formation of solid ice is reduced, but when stack temperature does not rise to 0 DEG C or more
As long as starting pile, which generates water, to freeze, and is that the position contacted on platinum grain surface with Nafion resin generates first
Ice leads to irreversible electrification once the ice-out that temperature is warmed to room temperature platinum and the interface Nafion will result in the disengaging at interface
Learn the loss of active area；It is another kind of be by the modes such as external power supply electric heating or hydrogen catalytic combustion heat release to pile and its
Both inner pad and membrane electrode are preheated, such mode not only system complex but also can generate larger energy consumption, shorten fuel
The course continuation mileage of battery car.
Summary of the invention
Aiming at the shortcomings in the prior art, the purpose of the present invention is to provide a kind of onboard fuels with cold start function
Battery thermal management system and control method.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
The embodiment of the present invention provides a kind of on-vehicle fuel heat management system with cold start function comprising power
System platform thermal management unit, fuel cell main body thermal management unit and thermal management controller；The thermal management controller difference
It is connect with powertrain platform thermal management unit, fuel cell main body thermal management unit, the powertrain platform heat management list
Member is connected with fuel cell main body thermal management unit；
The powertrain platform thermal management unit includes the first water pump, cooling-water temperature transmitter before DC/DC entrance, straight
Temperature sensor, heat exchange behind stream-DC converter DC/DC, power control unit PCU, driving motor, driving motor outlet
One output end of device, the first radiator, the heat exchanger passes sequentially through radiator, the first water pump, DC-DC converter
DC/DC, power control unit PCU, driving motor are connected to corresponding input terminal；First water pump and DC-dc conversion
Cooling-water temperature transmitter before setting DC/DC entrance, is arranged driving between device DC/DC between the driving motor and heat exchanger
Temperature sensor behind motor outlet.
In above scheme, the fuel cell main body thermal management unit includes the second water pump, the first temperature sensor, fuel
Battery stack, second temperature sensor, three-way magnetic valve, the second radiator；The cooling liquid outlet of the fuel cell pile is logical
It crosses after three-way magnetic valve and is connected to the input terminal of the second radiator all the way, another way is connected to another input terminal of heat exchanger, and
Fuel cell electricity is connected to through the second water pump after the remittance simultaneously of the output end of output end corresponding with the input terminal and second radiator
The cooling liquid inlet of heap；First temperature sensor be arranged in the second water pump and fuel cell pile cooling liquid inlet it
Between, the second temperature sensor is arranged between the cooling liquid outlet of fuel cell pile and three-way magnetic valve.
In above scheme, the powertrain platform thermal management unit further includes the first expansion tank, first expansion
Water tank is by piping connection at the both ends of the first water pump.
In above scheme, the fuel cell main body thermal management unit further includes the second expansion tank, second expansion
Water tank is by piping connection at the both ends of the second water pump.
In above scheme, first water pump, the first radiator, the second water pump, three-way magnetic valve, the second radiator are logical
It crosses route to connect with thermal management controller, temperature passes behind cooling-water temperature transmitter, driving motor outlet before the DC/DC entrance
Sensor, the first temperature sensor, second temperature sensor pass through route and connect with thermal management controller.
The embodiment of the present invention also provide it is a kind of using as described in any one of above scheme have cold start function
The control method of on-vehicle fuel heat management system, which is characterized in that this method is in the cold start mode as follows
It realizes:
Step (101), when the thermal management controller detects the coolant temperature T of the fuel cell pileF< T1
When, signal is sent to entire car controller by CAN line；The entire car controller determines fuel cell from TFIt is warming up to T1Required energy
Measure Q1, then obtain the state-of-charge SOC value of lithium-ion-power cell and determine the power battery driving garage with current SOC
Sail heat Q caused by powertrain platform when being down to pre-determined lower limit to SOC2, and compare Q1And Q2Between size；If Q1
> Q2, then needing external charge facility is power battery charging；If Q1< Q2, the entire car controller then transmits the information
To the thermal management controller；
Step (102), the entire car controller start lithium-ion-power cell to high direct voltage line conveying electric energy with pure electricity
Mode activated fuel cell car traveling；The thermal management controller gets Q1< Q2Afterwards, start the fuel cell main body heat
Administrative unit carries out pile heating to fuel cell pile；Meanwhile the thermal management controller closes the powertrain platform
The heat sinking function of thermal management unit；
Step (103), the thermal management controller receive the coolant liquid by the powertrain platform thermal management unit
Temperature TDIt is worth and compares TDWith second threshold temperature T2Size: if TD< T2, then make the powertrain platform heat management list
The heat sinking function of member continues to remain off；If TD> T2, then the heat dissipation of the powertrain platform thermal management unit is opened
Function, and temperature control is carried out by powertrain platform thermal management unit described in PWM modulation.
In above scheme, the first threshold temperature T1It is set as between -4 DEG C~0 DEG C；The second threshold temperature T2If
It is set between 60 DEG C~70 DEG C.
The embodiment of the present invention also provide it is a kind of using as described in any one of above scheme have cold start function
The control method of on-vehicle fuel heat management system, which is characterized in that this method is under normal heat management mode by as follows
Step is realized:
Step (201), when the thermal management controller detects the coolant temperature T of the fuel cell pileF> T1
When, signal is sent to entire car controller by CAN line, the entire car controller starting fluid battery stack is defeated to high direct voltage line
Power transmission can be to drive fuel cell car to travel and charge to lithium-ion-power cell；
Step (202), the thermal management controller is by the coolant liquid of the fuel cell pack via the fuel cell sheet
The radiator of body heat administrative unit enters fuel cell pile；Meanwhile the thermal management controller closes the fuel cell sheet
The heat sinking function of body heat administrative unit；
Step (203), the thermal management controller receive the coolant temperature T by the fuel cellFIt is worth and compares TF
With third threshold temperature T3Size: if T1< TF< T3, then make the heat sinking function of the fuel cell main body thermal management unit
Continue to remain off；If TF> T3, then the heat sinking function of the fuel cell main body thermal management unit is opened, and pass through
Fuel cell main body thermal management unit described in PWM modulation carries out temperature control.
In above scheme, the first threshold temperature T1It is set as between -4 DEG C~0 DEG C；The second threshold temperature T2If
It is set between 60 DEG C~70 DEG C；The third threshold temperature T3It is set as between 70 DEG C~80 DEG C.
Compared with prior art, the present invention utilizes fuel cell car powertrain platform under pure electric drive driving cycle
Middle DC/DC, power control unit PCU, waste heat is that the fuel cell pile of cold-starting is needed to preheat caused by driving motor,
The radiation energy consumption of powertrain platform critical component is not only reduced, it is auxiliary necessary to fuel cell pile heating for also having evaded
Electric heating energy consumption is helped, to effectively increase the utilization rate of electrical of power battery, extends the continual mileage of fuel cell car；
Moreover, heat management control method of the invention will start fuel cell pile only just when stack temperature rises to above freezing
To effectively prevent starting fluid battery stack at low ambient temperatures to pile core component (especially membrane electrode) can not
Inverse damage, and then ensure that the normal work and health status (SOH) of fuel cell, also therefore improve the durable of fuel cell
Property.
Detailed description of the invention
Fig. 1 is a kind of knot of the on-vehicle fuel heat management system with cold start function provided in an embodiment of the present invention
Composition.
Fig. 2 is in a kind of on-vehicle fuel heat management system with cold start function provided in an embodiment of the present invention
Fuel cell power system structural schematic diagram.
Fig. 3 is a kind of control of the on-vehicle fuel heat management system with cold start function provided in an embodiment of the present invention
Method flow diagram processed.
Specific embodiment
The embodiment that it will be convenient to further describe the present invention with respect to the accompanying drawings, the advantages and features of the present invention will be with describing
And it is apparent.But embodiment be only it is exemplary, it is not intended to limit the scope of the present invention in any way.Those skilled in the art
Member it should be understood that without departing from the spirit and scope of the invention can details to technical solution of the present invention and form into
Row modifications or substitutions, but these modifications and replacement are fallen within the protection scope of the present invention.
In addition, in order to better illustrate the present invention, numerous details is given in specific embodiment below.
It will be understood by those skilled in the art that without these details, the present invention equally be can be implemented.In other embodiments,
Known method, process, element and circuit are not described in detail, in order to highlight purport of the invention.
The embodiment of the present invention provides a kind of on-vehicle fuel heat management system with cold start function, as shown in Figure 1,
It includes powertrain platform thermal management unit 1, fuel cell main body thermal management unit 2 and thermal management controller 3；The heat pipe
Reason controller 3 is connect with powertrain platform thermal management unit 1, fuel cell main body thermal management unit 2 respectively, the dynamical system
System platform thermal management unit 1 and fuel cell main body thermal management unit 2 connect；
The powertrain platform thermal management unit 1 includes cooling-water temperature transmitter before the first water pump 12, DC/DC entrance
13, temperature sensing behind DC-DC converter DC/DC14, power control unit PCU15, driving motor 16, driving motor outlet
One output end of device 17, heat exchanger 18, the first radiator 19, the heat exchanger 18 passes sequentially through radiator 19, first
Water pump 12, DC-DC converter DC/DC14, power control unit PCU15, driving motor 16 are connected to corresponding input terminal；
Cooling-water temperature transmitter 13 before setting DC/DC entrance between first water pump 12 and DC-DC converter DC/DC14,
Temperature sensor 17 after driving motor exports is set between the driving motor 16 and heat exchanger 18.
The powertrain platform thermal management unit 1 is for controlling DC-DC converter DC/DC14, dynamic Control list
The heat that the operating temperature of first PCU15 and driving motor 16 and when above-mentioned three big device is worked by heat exchanger 18 generate passes
Pass the preheating before fuel cell pile 24 is cold-started；
The fuel cell main body thermal management unit 2 is used to control the operating temperature of fuel cell and receives dynamical system and puts down
Pile before the heat that platform thermal management unit 1 passes over is cold-started preheats；
The thermal management controller 3 is for receiving powertrain platform thermal management unit 1 and fuel cell main body heat management
The temperature signal of coolant liquid and water pump, radiator, electromagnetic valve transmission switch into above-mentioned two big heat management systems in unit 2
Instruction and the revolving speed for regulating and controlling pump motor and radiator fan motor by PWM controlling mechanism；Additionally by CAN line with it is whole
Vehicle controller carries out information transmission and exchange.
Further, in powertrain platform thermal management unit 1, the cooling liquid outlet and heat of the driving motor 16 are handed over
The tube side inlet of parallel operation 18 is connected by pipeline, and the inlet of the tube side liquid outlet of heat exchanger 18 and the first radiator 19 connects
It connects, the liquid outlet of the first radiator 19 is connect with the inlet of the first water pump 12, the liquid outlet and DC-DC of the first water pump 12
The inlet of the cooling line of converter DC/DC14 connects, the liquid outlet of the cooling line of DC-DC converter DC/DC14
It is connect with the inlet of the cooling line of power control unit PCU15, the liquid outlet of the cooling line of power control unit PCU15
It is connect with the inlet of the cooling line of driving motor 16, so that the coolant liquid for forming powertrain platform thermal management unit 1 is followed
Loop back path；
The heat exchanger 18 of the powertrain platform thermal management unit 1 be shell-and-tube or bushing type, material be 316L not
Become rusty steel.
The fuel cell main body thermal management unit 2 includes the second water pump 22, the first temperature sensor 23, fuel cell electricity
Heap 24, second temperature sensor 25, three-way magnetic valve 26, the second radiator 27；The coolant liquid of the fuel cell pile 24 goes out
Mouthful by being connected to the input terminal of the second radiator 27 after three-way magnetic valve 26 all the way, another way is connected to another of heat exchanger 18
Input terminal, and the output end of output end corresponding with the input terminal and second radiator 27 connects after converging simultaneously through the second water pump 22
In the cooling liquid inlet of fuel cell pile 24；The setting of first temperature sensor 23 is in the second water pump 22 and fuel cell electricity
Between the cooling liquid inlet of heap 24, the cooling liquid outlet and three of fuel cell pile 24 is arranged in the second temperature sensor 25
Between three-way electromagnetic valve 26.
In the fuel cell main body thermal management unit 2, the cooling liquid outlet and threeway electromagnetism of fuel cell pile 24
The inlet of valve 26 is connected by pipeline, and the first liquid outlet and the second liquid outlet of the three-way magnetic valve 26 are dissipated with second respectively
The shell side inlet of heat exchanger 18 is connected by pipeline in the inlet of hot device 27, powertrain platform thermal management unit 1, the
The shell side liquid outlet of heat exchanger 18 passes through pipeline in the liquid outlet and powertrain platform thermal management unit 1 of second radiator 27
The inlet of the second water pump 22 is connected to after converging simultaneously, the liquid outlet of the second water pump 22 passes through pipeline and connects fuel cell pile 24
Cooling liquid inlet, to form the coolant liquid circulation loop of fuel cell main body thermal management unit 2.
The powertrain platform thermal management unit 1 further includes the first expansion tank 11, and first expansion tank 11 is logical
Piping connection is crossed at the both ends of the first water pump 12；First expansion tank 11 is used for level pressure fluid infusion.
The fuel cell main body thermal management unit 2 further includes the second expansion tank 21, and second expansion tank 21 is logical
Piping connection is crossed at the both ends of the second water pump 22；Second expansion tank 21 is used for level pressure fluid infusion.
First water pump 12, the first radiator 19, the second water pump 22, three-way magnetic valve 26, the second radiator 27 are logical
It crosses route to connect with thermal management controller 3, temperature behind cooling-water temperature transmitter 13, driving motor outlet before the DC/DC entrance
Degree sensor 17, the first temperature sensor 23, second temperature sensor 25 are connect by route with thermal management controller 3.
The first water pump 12,22 in the powertrain platform thermal management unit 1 and fuel cell main body thermal management unit 2
The electric water pump and electric fan of PWM controlling mechanism are all made of with the fan of radiator 19,27.
Thermal management controller 3 passes through low-voltage signal line and powertrain platform thermal management unit 1 and fuel cell main body heat
The 17, first temperature of temperature sensor behind cooling-water temperature transmitter 13, driving motor outlet before DC/DC entrance in administrative unit 2
Sensor 23, the connection of second temperature sensor 25 are spent, the temperature signal of temperature sensor is received；By low tension switch control line with
Three-way magnetic valve 26 in fuel cell main body thermal management unit 2 connects, and is sent to it the instruction for opening direction；It is opened by low pressure
Close the first water pump 12, second in control line and powertrain platform thermal management unit 1 and fuel cell main body thermal management unit 2
Water pump 22 and the first radiator 19, the connection of the second radiator 27, send switch order to the fan of water pump and radiator and pass through
PWM controlling mechanism is sent to it pulse-width signal to regulate and control the revolving speed of pump motor and radiator fan motor；Also pass through CAN
Line is connected with entire car controller to carry out information transmission and exchanges.
The work of thermal management controller 3 is in cold start mode and normal heat management mode:
In the cold start mode, first in the closing of the thermal management controller 3 powertrain platform thermal management unit 1 dissipates
The fan of hot device 19 opens the second valve of three-way magnetic valve 26 in fuel cell main body thermal management unit 2, starts dynamical system
The first water pump 12, the second water pump 22 in platform thermal management unit 1 and fuel cell main body thermal management unit 2.In this way, dynamical system
Cooling fluid path running track in system platform thermal management unit 1 are as follows: coolant temperature senses before first water pump 12 → DC/DC entrance
Temperature behind 13 → DC-DC converter of device DC/DC14 → power control unit PCU15 → 16 → driving motor of driving motor outlet
17 → heat exchanger of sensor, 18 tube side → first radiator, 19 → the first water pump 12 is spent, to constitute powertrain platform heat pipe
The complete energy for managing unit 1 transmits circuit；The cooling fluid path running track of fuel cell main body thermal management unit 2 are as follows: the second water
Cooling-water temperature transmitter 23 → fuel cell pile, 24 → fuel cell pile exports before pumping 22 → fuel cell pile entrance
25 → three-way magnetic valve of cooling-water temperature transmitter, 26 → heat exchanger, 18 shell side → second water pump 22 afterwards, to constitute fuel electricity
The complete energy of pond ontology thermal management unit 2 transmits circuit.Above-mentioned two energy transmission circuit carries out heat by heat exchanger 18
Interaction, by fuel cell car in the pure electric drive driving process of lithium-ion-power cell high temperature caused by powertrain platform
The low-temperature fuel cell pile that energy transmission is cold-started to needs makes its heating realize the normal starting under low temperature environment.
Under normal heat management mode, the thermal management controller 3 opens threeway in fuel cell main body thermal management unit 2
First valve of solenoid valve 26 starts the in powertrain platform thermal management unit 1 and fuel cell main body thermal management unit 2
One radiator 19, the radiator fan of the second radiator 27 and the first water pump 12, the second water pump 22.In this way, powertrain platform
Cooling fluid path running track in thermal management unit 1 are as follows: cooling-water temperature transmitter 13 before first water pump 12 → DC/DC entrance →
Temperature sensing behind DC-DC converter DC/DC14 → power control unit PCU15 → 16 → driving motor of driving motor outlet
17 → heat exchanger of device, 18 tube side → first radiator, 19 → the first water pump 12, to constitute powertrain platform thermal management unit
1 complete energy transmits circuit；The cooling fluid path running track of fuel cell main body thermal management unit 2 are as follows: the second water pump 22 →
It is cooling behind the outlet of 23 → fuel cell pile of cooling-water temperature transmitter, 24 → fuel cell pile before fuel cell pile entrance
25 → three-way magnetic valve of liquid temperature sensor, 26 → the second radiator, 27 → the second water pump 22, to constitute fuel cell main body heat
The complete energy of administrative unit 2 transmits circuit.Above-mentioned two energy transmission circuit is independent mutually, and thermal management controller 3 passes through PWM
Controlling mechanism respectively the first water pump 12 into powertrain platform thermal management unit 1 and fuel cell main body thermal management unit 2,
The fan of second water pump 22 and the first radiator 19, the second radiator 27 sends pulse-width signal to regulate and control pump motor and dissipate
The revolving speed of hot device fan motor is to control the temperature of powertrain platform and fuel cell pile.
The thermal management controller 3 using cooling-water temperature transmitter 13 before DC/DC entrance, the first temperature sensor 23 or
Temperature sensor 17, the coolant temperature of second temperature sensor 25 are subsequent as reference temperature progress behind the outlet of person's driving motor
Compare and handles.
The thermal management controller 3 can also be using cooling-water temperature transmitter 13, the first temperature sensing before DC/DC entrance
Device 23 and driving motor outlet after temperature sensor 17, second temperature sensor 25 coolant temperature as reference temperature progress
Subsequent comparison and processing.For example, by the average value of the coolant temperature of inlet temperature sensor 13 and outlet temperature sensor 17
And the average value of the coolant temperature of inlet temperature sensor 23 and outlet temperature sensor 25 is as subsequent comparison and processing
Parameter.
Temperature sensor 17 is cold after cooling-water temperature transmitter 13 or/and driving motor export before the DC/DC entrance
But liquid reference temperature is referred to as " powertrain platform coolant temperature TD", the first temperature sensor 23 or/and second temperature pass
The coolant liquid reference temperature of sensor 25 is referred to as " fuel cell pile coolant temperature TF”。
The thermal management controller 3 reads first threshold temperature T1, second threshold temperature T2With third threshold temperature T3,
In, first threshold temperature T1Less than second threshold temperature T2, second threshold temperature T2Less than third threshold temperature T3, i.e. T1< T2<
T3.Wherein, first threshold temperature T1A temperature being set as in -4 DEG C~0 DEG C section；Second threshold temperature T2It is set as 60 DEG C
The optimum temperature that a temperature in~70 DEG C of sections, i.e. powertrain platform work normally；Third threshold temperature T3It is set as
The optimum temperature that a temperature in 70 DEG C~80 DEG C sections, i.e. fuel cell pile 24 work normally.
The fuel cell pile coolant temperature T of thermal management controller 3FWith first threshold temperature T1.Work as TF< T1
When, thermal management controller 3 enters cold start mode；Work as TF> T1When, thermal management controller 3 enters normal heat management mode.
The thermal management controller 3 powertrain platform coolant temperature TDWith second threshold temperature T2.Work as TD
< T2When, thermal management controller 3 closes the fan of the radiator 19 of powertrain platform thermal management unit 1, is only controlled by PWM
First water pump 12 of the mechanism into powertrain platform thermal management unit 1 sends pulse-width signal to regulate and control 12 electricity of the first water pump
The revolving speed of machine is to control the temperature of powertrain platform；Work as TD> T2When, thermal management controller 3 turns on the power system platform heat pipe
The fan for managing the first radiator 19 of unit 1, through PWM controlling mechanism respectively into powertrain platform thermal management unit 1
First water pump 12 and the first radiator 19 send pulse-width signal to regulate and control 19 fan of the first water pump 12 and the first radiator
Motor speed is to control the temperature of powertrain platform, so that the operating temperature of powertrain platform be kept to stablize in second threshold
Temperature T2。
The fuel cell pile coolant temperature T of thermal management controller 3FWith third threshold temperature T3.Work as T1< TF
< T3When, thermal management controller 3 closes the fan of the second radiator 27 of fuel cell main body thermal management unit 2, only passes through PWM
Second water pump 22 of the controlling mechanism into fuel cell main body thermal management unit 2 sends pulse-width signal to regulate and control the second water pump
The revolving speed of 22 motors is to control the temperature of fuel cell pile；Work as TF> T3When, thermal management controller 3 opens fuel cell main body
The fan of second radiator 27 of thermal management unit 2, by PWM controlling mechanism respectively to fuel cell main body thermal management unit 2
In the second water pump 22 and the second radiator 27 send pulse-width signal and regulate and control 27 wind of the second water pump 22 and the second radiator
The motor speed of fan is to control the temperature of fuel cell pile 24, so that the operating temperature of fuel cell pile 24 be kept to stablize
Third threshold temperature T3。
The embodiment of the present invention also provides a kind of on-vehicle fuel heat management system control method with cold start function,
As shown in Figure 2,3, this method is achieved by the steps of:
In step 300, the coolant temperature T that the detection of thermal management controller 3 passes through the fuel cell pile 24F
Value；Detect before the fuel cell pile entrance second temperature sensor 25 after first sensor 23 and fuel cell pile outlet
Coolant temperature numerical value, and thereby determine that the coolant temperature T by the fuel cell pile 24FValue；Then, compare institute
State fuel cell pile coolant temperature TFWith first threshold temperature T1Size and enter step 310.
In the step 310, when the thermal management controller 3 detects the coolant temperature T of the fuel cell pile 24F
< T1When, then enter step 311.
In step 311, as shown in Fig. 2, the thermal management controller 3 sends T to entire car controller by CAN lineF< T1
Signal, entire car controller starts to calculate fuel cell from TFIt is warming up to T1Required energy Q1, then obtain lithium-ion-power cell
State-of-charge SOC value and calculate described dynamic when being down to pre-determined lower limit to SOC with the power battery of current SOC driving running car
Heat Q caused by Force system platform (DC/DC, power control unit PCU and driving motor)2, and compare Q1And Q2Between it is big
It is small, subsequently into step 312.In one embodiment, the lithium-ion-power cell uses the lithium titanate of low temperature performance excellent
One of battery (as shown in Figure 2), all-solid lithium-ion battery, lithium manganate battery, ternary lithium ion battery are a variety of.
Specifically, the pre-determined lower limit can be down to 10% for SOC.
In step 312, as the Q that the entire car controller is calculated1> Q2When, then enter step 313, i.e. lithium ion
Power battery needs external charge facility to charge for it；As the Q that the entire car controller is calculated1< Q2When, entire car controller
The information is then fed back into the thermal management controller 3 and enters step 314 immediately.
In a step 314, the entire car controller starts lithium-ion-power cell to high direct voltage line conveying electric energy with pure
Power mode drives fuel cell car traveling；The thermal management controller 3 gets Q1< Q2Afterwards, start the fuel cell sheet
Second water pump 22 of body heat administrative unit 2 and the second valve of three-way magnetic valve 26, make the cooling of the fuel cell pile 24
Liquid stream through the shell side pipeline of the heat exchanger 18 obtains heat that 18 tube side of heat exchanger is passed over and described
Enter fuel cell pile 24 under the driving of second water pump 22 of fuel cell main body thermal management unit 2 for pile heating；Then
310 real-time monitoring T of return stepFWith T1Size variation and enter step 315 simultaneously, i.e., the thermal management controller 3 closes institute
19 fan of the first radiator of powertrain platform thermal management unit 1 is stated to improve heat utilization rate；Subsequently enter step 316.
In step 316, the coolant temperature T that the detection of thermal management controller 3 passes through the powertrain platformD
Value；In one embodiment, detect before the DC/DC entrance that temperature passes after cooling-water temperature transmitter 13 and driving motor outlet
The coolant temperature numerical value of sensor 17, and thereby determine that the coolant temperature T by the powertrain platformDValue；Then, than
The coolant temperature T of the powertrain platformDWith second threshold temperature T2Size.Subsequently enter step 317.
In step 317, when the thermal management controller 3 detects the coolant temperature T of the powertrain platformD>
T2When, then enter step 318；In step 318, the thermal management controller 3 opens the powertrain platform heat management list
19 fan of the first radiator of member 1, and pass through first of PWM controlling mechanism respectively into powertrain platform thermal management unit 1
Water pump 12 and the first radiator 19 send pulse-width signal to regulate and control the motor of 19 fan of the first water pump 12 and the first radiator
Revolving speed is to control the temperature of powertrain platform, so that the operating temperature of powertrain platform be kept to stablize in second threshold temperature
T2, to guarantee that powertrain platform works in optimum working temperature.
In step 317, when the thermal management controller 3 detects the coolant temperature T of the powertrain platformD<
T2When, then it is back to step 315, even if 19 fan of the first radiator of the powertrain platform thermal management unit 1 is after continuation of insurance
Closed state is held, only the first water pump 12 by PWM controlling mechanism into powertrain platform thermal management unit 1 sends pulsewidth tune
Signal processed regulates and controls the revolving speed of 12 motor of the first water pump to control the temperature of powertrain platform, to guarantee that powertrain platform exists
It works in optimum working temperature.
In the step 310, when the thermal management controller 3 detects the coolant temperature T of the fuel cell pile 24F
> T1When, then enter step 320.
In step 320, as shown in Fig. 2, the thermal management controller 3 passes through CAN line for TF> T1Signal be sent to it is whole
Vehicle controller, entire car controller starting fluid battery stack 24 is to high direct voltage line conveying electric energy to drive fuel cell car row
It sails and charges to lithium-ion-power cell.Subsequently into step 321.
In step 321, the thermal management controller 3 starts (when normal heat management mode) or keeps (cold start mode
When, i.e., when being back to step 310 from step 314) the second water pump 22 of the fuel cell main body thermal management unit 2 runs and opens
The first valve for opening the three-way magnetic valve 26 of the fuel cell main body thermal management unit 2 makes the fuel cell pile 24
Coolant liquid enters fuel cell pile 24 via the second radiator 27 of the fuel cell main body thermal management unit 2.While into
Enter step 322, i.e., the described thermal management controller 3 closes 27 wind of the second radiator of the fuel cell main body thermal management unit 2
Fan.Subsequently into step 323.
In step 323, the thermal management controller 3 detects the coolant temperature T for passing through the fuel cell pile 24F
It is worth and compares TFWith third threshold temperature T3Size.Subsequently enter step 324.
In step 324, when the thermal management controller 3 detects the coolant temperature T of the fuel cell pileF>
T3When, then enter step 325.In step 325, the thermal management controller 3 opens the fuel cell main body heat management list
The fan of second radiator 27 of member 2, and pass through second of PWM controlling mechanism respectively into material battery body thermal management unit 2
Water pump 22 and the second radiator 27 send pulse-width signal to regulate and control the motor of 27 fan of the second water pump 22 and the second radiator
Revolving speed is to control the temperature of fuel cell pile 24, so that the operating temperature of fuel cell pile be kept to stablize in third threshold value temperature
Spend T3, to guarantee that fuel cell pile works in optimum working temperature.
In step 324, when the thermal management controller 3 detects the coolant temperature T of the fuel cell pile1<
TF< T3When, then be back to step 322, even if the fan of the second radiator 27 of the fuel cell main body thermal management unit 2 after
Continuous to remain off, only the second water pump 22 by PWM controlling mechanism into fuel cell main body thermal management unit 2 sends arteries and veins
Wide modulated signal come regulate and control the second water pump 22 motor revolving speed to control the temperature of fuel cell pile 24, to guarantee fuel electricity
Pond pile works in optimum working temperature.
The present invention DC/DC, power control in powertrain platform under pure electric drive driving cycle using fuel cell car
Waste heat caused by unit PCU processed, driving motor is that the fuel cell pile of cold-starting is needed to preheat, and not only reduces power
The radiation energy consumption of system platform critical component has also evaded auxiliary electrical heater energy consumption necessary to heating up for fuel cell pile,
To effectively increase the utilization rate of electrical of power battery, the continual mileage of fuel cell car is extended.Moreover, of the invention
Heat management control method makes fuel cell pile only just will start effectively to avoid when stack temperature rises to above freezing
Irreversible damage of the starting fluid battery stack to pile core component (especially membrane electrode) at low ambient temperatures, Jin Erbao
The normal work and health status (SOH) of fuel cell have been demonstrate,proved, the durability of fuel cell is also therefore improved.
The embodiment of the present invention content is disclosed above, however the present embodiment is not intended to limit the invention the range of implementation,
Simple equivalent changes and modifications made by claims according to the present invention and description, still fall within the technology of the present invention side
In the range of case.
Claims (9)
1. a kind of on-vehicle fuel heat management system with cold start function, which is characterized in that it includes that dynamical system is flat
Platform thermal management unit, fuel cell main body thermal management unit and thermal management controller；The thermal management controller respectively with power
System platform thermal management unit, the connection of fuel cell main body thermal management unit, the powertrain platform thermal management unit and combustion
Expect the connection of battery body thermal management unit；
The powertrain platform thermal management unit includes cooling-water temperature transmitter, direct current-before the first water pump, DC/DC entrance
Temperature sensor, heat exchanger, the behind DC converter DC/DC, power control unit PCU, driving motor, driving motor outlet
One output end of one radiator, the heat exchanger passes sequentially through radiator, the first water pump, DC-DC converter DC/
DC, power control unit PCU, driving motor are connected to corresponding input terminal；First water pump and DC-DC converter
Cooling-water temperature transmitter before setting DC/DC entrance between DC/DC, setting driving electricity between the driving motor and heat exchanger
Temperature sensor behind machine outlet.
2. the on-vehicle fuel heat management system according to claim 1 with cold start function, which is characterized in that institute
Stating fuel cell main body thermal management unit includes the second water pump, the first temperature sensor, fuel cell pile, second temperature sensing
Device, three-way magnetic valve, the second radiator；The cooling liquid outlet of the fuel cell pile is connected to all the way after passing through three-way magnetic valve
The input terminal of second radiator, another way are connected to another input terminal of heat exchanger, and output end corresponding with the input terminal
The cooling liquid inlet of fuel cell pile is connected to after converging simultaneously with the output end of second radiator through the second water pump；Described first
Temperature sensor is arranged between the second water pump and the cooling liquid inlet of fuel cell pile, the second temperature sensor setting
Between the cooling liquid outlet and three-way magnetic valve of fuel cell pile.
3. the on-vehicle fuel heat management system according to claim 1 or 2 with cold start function, feature exist
In the powertrain platform thermal management unit further includes the first expansion tank, and first expansion tank passes through piping connection
At the both ends of the first water pump.
4. the on-vehicle fuel heat management system according to claim 3 with cold start function, which is characterized in that institute
Stating fuel cell main body thermal management unit further includes the second expansion tank, and second expansion tank is by piping connection second
The both ends of water pump.
5. the on-vehicle fuel heat management system according to claim 4 with cold start function, which is characterized in that institute
It states the first water pump, the first radiator, the second water pump, three-way magnetic valve, the second radiator and passes through route and thermal management controller
Connection, temperature sensor behind cooling-water temperature transmitter, driving motor outlet before the DC/DC entrance, the first temperature sensor,
Second temperature sensor passes through route and connect with thermal management controller.
6. a kind of on-vehicle fuel heat management system with cold start function using as described in claim 1-5 any one
The control method of system, which is characterized in that this method is achieved by the steps of in the cold start mode:
Step (101), when the thermal management controller detects the coolant temperature T of the fuel cell pileF< T1When, lead to
It crosses CAN line and sends signal to entire car controller；The entire car controller determines fuel cell from TFIt is warming up to T1Required energy Q1,
Then it obtains the state-of-charge SOC value of lithium-ion-power cell and determines with the power battery driving running car of current SOC extremely
Heat Q caused by powertrain platform when SOC is down to pre-determined lower limit2, and compare Q1And Q2Between size；If Q1> Q2,
Then needing external charge facility is power battery charging；If Q1< Q2, the entire car controller then transmits this information to described
Thermal management controller；
Step (102), the entire car controller start lithium-ion-power cell to high direct voltage line conveying electric energy with pure power mode
Drive fuel cell car traveling；The thermal management controller gets Q1< Q2Afterwards, start the fuel cell main body heat management
Unit carries out pile heating to fuel cell pile；Meanwhile the thermal management controller closes the powertrain platform heat pipe
Manage the heat sinking function of unit；
Step (103), the thermal management controller receive the coolant temperature T by the powertrain platform thermal management unitD
It is worth and compares TDWith second threshold temperature T2Size: if TD< T2, then make dissipating for the powertrain platform thermal management unit
Heat function continues to remain off；If TD> T2, then the heat sinking function of the powertrain platform thermal management unit is opened,
And temperature control is carried out by powertrain platform thermal management unit described in PWM modulation.
7. the control method of the on-vehicle fuel heat management system according to claim 6 with cold start function,
It is characterized in that, the first threshold temperature T1It is set as between -4 DEG C~0 DEG C；The second threshold temperature T2Be set as 60 DEG C~
Between 70 DEG C.
8. a kind of on-vehicle fuel heat management system with cold start function using as described in claim 1-5 any one
The control method of system, which is characterized in that this method is achieved by the steps of under normal heat management mode:
Step (201), when the thermal management controller detects the coolant temperature T of the fuel cell pileF> T1When, lead to
It crosses CAN line and sends signal to entire car controller, the entire car controller starting fluid battery stack conveys electricity to high direct voltage line
It can be to drive fuel cell car to travel and charge to lithium-ion-power cell；
Step (202), the thermal management controller is by the coolant liquid of the fuel cell pack via the fuel cell main body heat
The radiator of administrative unit enters fuel cell pile；Meanwhile the thermal management controller closes the fuel cell main body heat
The heat sinking function of administrative unit；
Step (203), the thermal management controller receive the coolant temperature T by the fuel cellFIt is worth and compares TFWith
Three threshold temperature T3Size: if T1< TF< T3, then continue the heat sinking function of the fuel cell main body thermal management unit
It remains off；If TF> T3, then the heat sinking function of the fuel cell main body thermal management unit is opened, and pass through PWM tune
It makes the fuel cell main body thermal management unit and carries out temperature control.
9. the control method of the on-vehicle fuel heat management system according to claim 8 with cold start function,
It is characterized in that, the first threshold temperature T1It is set as between -4 DEG C~0 DEG C；The second threshold temperature T2Be set as 60 DEG C~
Between 70 DEG C；The third threshold temperature T3It is set as between 70 DEG C~80 DEG C.
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