CN103982289B - The fan rotational frequency control method and system of automobile cooling system - Google Patents
The fan rotational frequency control method and system of automobile cooling system Download PDFInfo
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- CN103982289B CN103982289B CN201310049281.5A CN201310049281A CN103982289B CN 103982289 B CN103982289 B CN 103982289B CN 201310049281 A CN201310049281 A CN 201310049281A CN 103982289 B CN103982289 B CN 103982289B
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Abstract
The present invention provides a kind of fan rotational frequency control method of automobile cooling system.This method includes：The first rotating speed of cooling fan under normal operating mode is obtained according to ECT signal, GES, A/C pressure sensor signal；The second rotating speed of cooling fan under normal operating mode is obtained according to electronic cooling system coolant temperature signal, GES, A/C pressure sensor signal；The 3rd rotating speed of cooling fan under normal operating mode is obtained according to battery coolant system coolant temperature signal, GES, A/C pressure sensor signal；And compare the first rotating speed, the second rotating speed and the 3rd rotating speed, and using maximum therein as cooling fan under normal operating mode final rotating speed.The present invention also provides corresponding control system.
Description
Technical field
The present invention relates to the rotating speed control of automobile cooling system, more particularly to the cooling fan of automobile cooling system.
Background technology
Traditional petrol and diesel oil automobile cooling system, it is cold that its critical piece includes cooling fan, engine radiator, engine
But the engine-cooling system such as water and engine water channel.Air-conditioned traditional petrol and diesel oil automobile is configured, its cooling system then includes
Engine-cooling system and the condensers such as cooling fan, engine radiator, engine cooling water and engine water channel, condensation
Agent, expansion valve, the air-conditioning system such as evaporator.The cooling system of electric automobile includes air-conditioning system, motor and electric machine controller
Electronic cooling system, battery cooling system etc..The cooling system of hybrid vehicle includes engine-cooling system, air-conditioning system
The electronic cooling system of system, motor and electric machine controller, battery cooling system etc..In above-mentioned all types of power cars, cooling
The heat of system is dissipated eventually through the mode that heat exchange is carried out with air.At this stage, as emerging automobile species electricity
The cooling strategy of dynamic and hybrid vehicle is in Rapid development stage.
The content of the invention
The present invention provides a kind of fan rotational frequency control method of automobile cooling system.This method includes：Detect that engine is cold
But the coolant temperature of system；Detect the coolant temperature of electronic cooling system；Detect the coolant temperature of battery cooling system；
If the coolant temperature of the engine-cooling system detected is in the minimum design temperature of engine coolant and engine cool
Between liquid maximum design temperature, according to speed, the sensing signal of A/C pressure sensor and the engine cool liquid temperature detected
Degree obtains the first rotating speed of cooling fan under normal operating mode；If the coolant temperature of the power driven system detected is electronic
Between coolant minimum design temperature and the maximum design temperature of electronic coolant, according to speed, the sensing of A/C pressure sensor
The coolant temperature of signal and electronic cooling system obtains the second rotating speed of cooling fan under normal operating mode；If detected
Battery cooling system coolant temperature the minimum design temperature of battery coolant and the maximum design temperature of battery coolant it
Between, according to speed, A/C pressure sensor signal and battery coolant system coolant temperature TBObtain under normal operating mode
3rd rotating speed of cooling fan；And it regard the maximum in the first rotating speed, the second rotating speed and the 3rd rotating speed as normal operation mould
The final rotating speed of cooling fan under formula.
Preferably, the fan rotational frequency control method of automobile cooling system of the present invention also includes：Detect other cooling systems
The coolant temperature of system；If the coolant temperature of other cooling systems detected is in other systems coolant minimum setting temperature
Between the maximum design temperature of degree and other systems coolant, then according to speed, the sensing signal of A/C pressure sensor and other
The coolant temperature of cooling system obtains the 4th rotating speed of cooling fan under normal operating mode；By the first rotating speed, the second rotating speed,
Maximum in 3rd rotating speed and the 4th rotating speed as the cooling fan under normal operating mode final rotating speed.
Preferably, in the fan rotational frequency control method of automobile cooling system of the present invention, other described cooling system bags
Include cooling system for speed changing box and/or charge air cooler cooling system.
Preferably, in the fan rotational frequency control method of automobile cooling system of the present invention, when the engine detected is cold
But the power driven system coolant temperature that the coolant temperature of system is less than the minimum design temperature of engine coolant or detected is small
It is less than battery coolant most in the coolant temperature of the minimum design temperature of engine coolant or the battery cooling system detected
During small design temperature, the fan running of cooling system maintains its original state.
Preferably, in the fan rotational frequency control method of automobile cooling system of the present invention, when the engine detected is cold
But the power driven system coolant temperature that liquid temperature degree is more than the maximum design temperature of engine coolant or detected is more than electronic cooling
The temperature of liquid maximum design temperature or the battery cooling system coolant detected is more than the maximum design temperature of battery coolant
When, the fan running of cooling system is in protected mode.
The present invention also provides a kind of fan rotary speed control system of automobile cooling system, and the system includes：For detecting hair
The ECT detection module of the coolant temperature of motivation cooling system；Cooling for detecting electronic cooling system
The electronic coolant temperature detection module of liquid temperature degree；For the battery coolant for the coolant temperature for detecting battery coolant system
Temperature detecting module；First rotating speed acquisition module, it is used for the coolant temperature in the engine-cooling system detected in hair
Between motivation coolant minimum design temperature and the maximum design temperature of engine coolant, according to speed, A/C pressure sensor
Sensing signal and the ECT that is detected obtain the first rotating speed of cooling fan under normal operating mode；Second
Rotating speed acquisition module, it is used for the coolant temperature in the power driven system detected in the minimum design temperature of electronic coolant and electricity
Between the dynamic maximum design temperature of coolant, according to the cold of speed, the sensing signal of A/C pressure sensor and electronic cooling system
But liquid temperature degree obtains the second rotating speed of cooling fan under normal operating mode；3rd rotating speed acquisition module, it is used to detected
Battery cooling system coolant temperature the minimum design temperature of battery coolant and the maximum design temperature of battery coolant it
Between, according to speed, A/C pressure sensor signal and battery coolant system coolant temperature TBObtain under normal operating mode
3rd rotating speed of cooling fan；And processing module, it is used to turn the maximum in the first rotating speed, the second rotating speed and the 3rd rotating speed
The fast final rotating speed as cooling fan under normal operating mode.
Preferably, the fan rotary speed control system of automobile cooling system of the present invention also includes other systems detection mould
Block, the coolant temperature for detecting other cooling systems；And the 4th rotating speed acquisition module, its be used for detected other
The coolant temperature of cooling system is in the minimum design temperature of other systems coolant and the maximum design temperature of other systems coolant
Between, then normal fortune is obtained according to the coolant temperature of speed, the sensing signal of A/C pressure sensor and other cooling systems
4th rotating speed of cooling fan under rotary-die type；In the case, the processing module by the first rotating speed, the second rotating speed, the 3rd turn
Speed and the 4th rotating speed in maximum (top) speed as cooling fan under normal operating mode final rotating speed.
Preferably, in the fan rotary speed control system of automobile cooling system of the present invention, other described cooling systems
Including cooling system for speed changing box and/or charge air cooler cooling system.
The fan rotational frequency control method or system of automobile cooling system of the present invention, can be applicable to different types of car
, and on the basis of various types of vehicles cooling system cooling safety is met, it is possible to decrease vehicle energy consumption.
Brief description of the drawings
Fig. 1 shows the flow chart of the fan rotational frequency control method of automobile cooling system of the present invention.
Fig. 2 is illustrated that to be selected to illustrate according to the control signal of method of the present invention.
Fig. 3 is the signal flow schematic diagram according to control method or signal of the invention.
Fig. 4 illustrates the fan rotary speed control system of an exemplary automobile cooling system according to the present invention.
Embodiment
The present invention is further illustrated in conjunction with accompanying drawing.One of skill in the art will understand that, simply combine below specific
Embodiment carries out non-limitative illustration to the purport of the present invention, and the scope that the present invention is advocated is true by appended claim
Fixed, any modification for not departing from spirit of the present invention, change should all be covered by the claim of the present invention.
The cooling fan rotation speed control method of automobile cooling system of the present invention can be applicable to petrol and diesel oil, electronic and mixed
In the cooling system for closing power vehicle.Fig. 1 shows the stream of the fan rotational frequency control method of automobile cooling system of the present invention
Cheng Tu.As illustrated, in step 100, detecting engine-cooling system coolant temperature.In step 102, electronic cooling system is detected
System coolant temperature.In step 104, battery cooling system coolant temperature is detected.In step 106, if that is detected starts
Machine cooling system coolant temperature between the minimum design temperature of engine coolant and the maximum design temperature of engine coolant,
Normal fortune is then obtained based on current vehicle speed, the sensing signal of A/C pressure sensor and the ECT detected
First rotating speed of cooling fan under rotary-die type；Wherein, current vehicle speed is had by conventional vehicle speed sensor or other vehicles
Related sensor combine required processing and obtain, and the acquisition of A/C pressure sensor signal is also by existing sky in vehicle
Pressure regulation force snesor is obtained.In step 108, if the electronic cooling system coolant temperature detected is minimum in electronic coolant
Between the maximum design temperature of design temperature and electronic coolant, then the sensing signal based on current vehicle speed, A/C pressure sensor
And the electronic cooling system coolant temperature detected obtains the second rotating speed of cooling fan under normal operating mode.In step
110, if the battery cooling system coolant temperature detected in the minimum design temperature of battery coolant and battery coolant most
Between big design temperature, then based on current vehicle speed, the sensing signal of A/C pressure sensor and the battery coolant system detected
Coolant temperature of uniting obtains the 3rd rotating speed of cooling fan under normal operating mode.In step 112, compare the first rotating speed, second
Rotating speed and the 3rd rotating speed, and using maximum therein as cooling fan under normal operating mode final rotating speed.
Exemplarily, as the engine-cooling system coolant temperature T detectedESet less than engine coolant minimum
Temperature TEMINWhen, then do not apply for that cooling fan is operated；As the ECT T detectedEMore than engine coolant most
Small design temperature TEMIN, and less than the maximum design temperature T of engine coolantEMAXWhen, cooling fan is in normal operating mode,
And as shown in step 106, obtain first rotating speed of the fan under normal operating mode；As ECT signal TEGreatly
In the maximum design temperature T of engine coolantEMAXWhen, cooling fan is in protection operation mode PCF。
Exemplarily, as the electronic cooling system coolant temperature T detectedPIt is minimum less than electronic cooling system coolant
Design temperature TPMINWhen, then do not apply for that cooling fan is operated；As electronic cooling system coolant temperature TPMore than electronic cooling system
Coolant minimum design temperature TPMIN, and less than the maximum design temperature T of electronic cooling system coolantPMAXWhen, cooling fan is in
Normal operating mode, and as shown at step 1 08 as, obtain normal operating mode under the second rotating speed；When the electricity detected
Dynamic cooling system coolant temperature TPDesign temperature T maximum more than electronic cooling system coolantPMAXWhen, cooling fan, which is in, protects
Ship sth. under guard rotary-die type PCF。
Exemplarily, as the battery cooling system coolant temperature T detectedBIt is minimum less than battery cooling system coolant
Design temperature TBMINWhen, then do not apply for that cooling fan is operated；As the battery cooling system coolant temperature T detectedBMore than battery
Cooling system coolant minimum design temperature TBMIN, and less than the maximum design temperature T of battery cooling system coolantBMAXWhen, cooling
Fan is in normal operating mode, and as shown at step 110, obtains the 3rd rotating speed；When the battery cooling system cooling detected
Liquid temperature degree TBDesign temperature T maximum more than battery cooling system coolantBMAXWhen, cooling fan is in protection operation mode PCF。
Exemplarily, as other cooling system coolant temperatures S detectedOIt is minimum less than other cooling system coolants
Design temperature SOMINWhen, then do not apply for that cooling fan is operated；As other cooling system coolant temperatures SOMore than other cooling systems
Coolant minimum design temperature SOMIN, and less than the maximum design temperature S of other cooling system coolantsOMAXWhen, cooling fan is in
Normal operating mode；As other cooling system coolant temperatures SODesign temperature S maximum more than other cooling system coolantsOMAX
When, cooling fan is in protection operation mode PCF。
Wherein, the first rotating speed is for example obtained as follows：It is cold with the engine-cooling system detected according to respectively
But liquid temperature degree TE, vehicle velocity V, the sensing signal P of A/C pressure sensorhThe three-dimensional scaling curve map formed by X, Y, Z coordinate axle
MAPEVDraw the demand rotating speed R of cooling fan under normal operating modeEV1.The demand rotating speed of cooling fan under normal operating mode
REV1It is multiplied by with environment temperature TAFor the modifying factor C of variableAEAfterwards, the first rotating speed R is obtainedEVA1。
Wherein, the second rotating speed is for example obtained as follows：Cooled down according to respectively with the electronic cooling system detected
Liquid temperature degree TP, vehicle velocity V, the sensing signal P of A/C pressure sensorhThe three-dimensional scaling curve map formed by X, Y, Z coordinate axle
MAPPVDraw the demand rotating speed R of cooling fan under normal operating modePV1.The demand rotating speed of cooling fan under normal operating mode
RPV1It is multiplied by with ambient temperature signal TAFor the modifying factor C of variableAPAfterwards, the second rotating speed R is obtainedPVA1。
Wherein, the 3rd rotating speed is for example obtained according to following manner：Cooled down according to respectively with the battery cooling system detected
Liquid temperature degree TB, GES V, A/C pressure sensor signal PhThe three-dimensional scaling curve map M formed by X, Y, Z coordinate axleAPBV
Draw the demand rotating speed R of cooling fan under normal operating modeBV1.The demand rotating speed R of cooling fan under normal operating modeBV1Multiply
With with ambient temperature signal TAFor the modifying factor C of variableABAfterwards, the 3rd rotating speed R is obtainedBVA1。
Alternatively, considering other cooling systems, for example, for other cooling systems is obtained according to following manner
Four rotating speeds：Other cooling system coolant temperatures S according to respectively to be detectedO, GES V, A/C pressure sensor letter
Number PhThe three-dimensional scaling curve map M formed by X, Y, Z coordinate axleAPOVShow that the demand of cooling fan under normal operating mode turns
Fast ROV1.The demand rotating speed R of cooling fan under normal operating modeOV1It is multiplied by with ambient temperature signal TAFor the modifying factor of variable
CAOAfterwards, the 4th rotating speed R is obtainedOVA1。
As shown in step 112, by the first rotating speed REVA1,Second rotating speed RPVA1 And the 3rd rotating speed RBVA1In
Maximal rate as cooling fan under normal operating mode rotating speed.In the case where considering other cooling systems, by first
Rotating speed REVA1,Second rotating speed RPVA1 3rd rotating speed RBVA1And the 4th rotating speed ROVA1In maximal rate be used as normal operating mode
The rotating speed of lower cooling fan.
Fig. 2 is illustrated that to be selected to illustrate according to the control signal of the method for the invention.As shown in Figure 2, it is necessary to coolant
Pump provides the cooling system that coolant operates power, only when coolant pump is operated, and its coolant temperature signal effectively, is cooled down
When liquid pump is not operated, its coolant temperature invalidating signal.Specifically for example, when electronic cooling system coolant pump is operated（Pp=
1）, electronic cooling system coolant temperature TP2Effectively；When electronic cooling system coolant pump is not operated（Pp=0）, electronic cooling
System coolant temperature TP2It is invalid.When battery cooling system coolant pump is operated（PB=1）, battery cooling system coolant temperature
TB2Effectively；When battery cooling system coolant pump is not operated（PB=0）, battery cooling system coolant temperature TB2It is invalid.Other
When cooling system coolant pump is operated（Po=1）, its cooling system coolant temperature So2Effectively；Other cooling system coolant pumps
When not operating（Po=0）, its cooling system coolant temperature So2It is invalid.
If petrol and diesel oil, each cooling system of electronic, hybrid vehicle be not with above-mentioned signal or for above-mentioned parameter
Signal, then the signal or the signal for the parameter are defaulted as 0.In addition, in above in association with the method shown in Fig. 1, Mou Xiexin
Number or can use substitution value as follows for the signal of some parameters：The sensing signal P of A/C pressure sensorh1Can not
Lean on or failure (FPh≠ 0, wherein FPhIt is A/C pressure sensor failure whether sign signal, air conditioning pressure is represented equal to 0
Sensor fault) when, the sensing signal of A/C pressure sensor takes substitution value Phd, the sense of the A/C pressure sensor so exported
Survey signal is Ph；For the GES V of speed1Unreliable or failure (Fv1≠ 0, wherein Fv1It is the portion for obtaining speed
Part failure whether sign signal, the unit failure for obtaining speed is represented equal to 0) when, then the signal for speed, which takes, replaces
Generation value Vd, the signal for speed so exported is V；For the signal T of environment temperatureA1Unreliable or failure (FTA≠ 0,
Wherein FTAIt is environment temperature sensor failure whether sign signal, environment temperature sensor failure is represented equal to 0) when, for
The signal of environment temperature takes substitution value TAd, in this way, the signal for environment temperature of output is TA；For engine-cooling system
Coolant temperature signal TE1Unreliable or failure (FTE≠ 0, wherein FTEIt is that engine-cooling system coolant temperature is passed
Sensor failure whether sign signal, ECTS failure is represented equal to 0) when, for engine cool
The signal of liquid temperature degree takes substitution value TEd, the ECT signal so exported is TE；It is cold for electronic cooling system
But the signal T of liquid temperature degreeP1Unreliable or failure (FTP≠ 0, wherein FTPIt is electronic cooling system cooling-water temperature transmitter event
The sign signal whether hindered, electronic cooling-water temperature transmitter failure is represented equal to 0) when, for electronic cooling system coolant
The signal of temperature takes substitution value TPd, the signal for electronic cooling system coolant temperature so exported is TP；For battery
The signal T of cooling system coolant temperatureB1Unreliable or failure (FTB≠ 0, wherein FTBIt is battery cooling system cooling liquid temperature
Sensor fault whether sign signal is spent, battery cooling-water temperature transmitter failure is represented equal to 0) when, cooled down for battery
The signal of system coolant temperature takes substitution value TBd, the temperature signal for electronic cooling system coolant so exported is
TB；For the signal So1 of other cooling system coolant temperatures is unreliable or failure (Fso ≠ 0, wherein Fso are other coolings
System cooling-water temperature transmitter failure whether sign signal, other cooling system cooling-water temperature transmitters are represented equal to 0
Failure) when, the signal takes substitution value Sod, in this way, the signal for electronic cooling system coolant temperature of output is So.
Fig. 3 is the signal flow schematic diagram of the control method according to the present invention.Other cooling systems are considered in the example.
As illustrated, in the first rotating speed REVA1, the second rotating speed RPVA1, the 3rd rotating speed RBVA1And the 4th rotating speed ROVA1Take after maximum, draw
Cooling fan rotation speed R under normal operating modeCFN。
In protected mode signal PCFIn the case of effective, the cooling fan rotation speed R under selection protected modeCFPAs final
Cooling fan operating rotating speed RCF, cooling fan rotation speed R is selected under normal operating modeCFNTurn as the operating of final cooling fan
Fast RCF。
Petrol and diesel oil, electronic, each cooling system of hybrid vehicle does not have signal as described above, is replaced with 0, concrete example
Such as：
（1）Traditional petrol and diesel oil automobile cooling system only includes engine-cooling system, so except engine-cooling system
Coolant temperature signal TE, GES V, ambient temperature signal TA, modifying factor CAE, engine-cooling system coolant minimum
Design temperature TEMIN, engine coolant maximum design temperature TEMAXOutside, other each input signals are replaced with 0；
（2）Air-conditioned traditional petrol and diesel oil automobile is configured comprising engine-cooling system and air-conditioning system, therefore except starting
The coolant temperature signal T of machine cooling systemE, GES V, ambient temperature signal TA, modifying factor CAE, engine coolant
Minimum design temperature TEMIN, the maximum design temperature T of engine coolantEMAX, A/C pressure sensor signal PhOutside, other systems
The variable signal of input is replaced with 0；
（3）Hybrid vehicle also comprising in electronic cooling system and battery cooling system, therefore the above method only other
Signal SOCorrelative Po, So1, Sod, Fso, SOMIN, SOMAX, CAO, SOReplaced Deng signal with 0；
（4）Electric automobile includes air-conditioning system, electronic cooling system and battery cooling system, so engine-cooling system
Coolant temperature signal TE, modifying factor CAE, the minimum design temperature T of engine-cooling system coolantEMIN, engine cool
System coolant maximum design temperature TEMAXAnd other signals SoCorrelative Po, So1, Sod, Fso, SOMIN, SOMAX, CAO, SODeng letter
Number with 0 replace；
（5）If more complicated automotive system includes more cooling systems, other increased cooling systems are as upper
State other signals S of methodOCorrelative Po, So1, Sod, Fso, SOMIN, SOMAX, CAO, SODeng signal input.
Involved MAP in Fig. 3EV、MAPPV、MAPBVAnd MAPOVIt is that the vehicle for being directed to particular type is calibrated respectively
Be related to engine-cooling system, be related to electronic cooling system, be related to battery cooling system and be related to other cooling systems
Curve.
Fig. 4 illustrates the fan rotary speed control system of an exemplary automobile cooling system according to the present invention.The control
System processed includes ECT detection module 40, electronic coolant temperature detection module 41, battery coolant temperature
Detection module 42, the first rotating speed acquisition module 43, the second rotating speed acquisition module 44, the 3rd rotating speed acquisition module 45, processing module
47, and alternatively, it may include the 4th rotating speed acquisition module 46.
ECT detection module 40 detects the coolant temperature of engine-cooling system.Electronic cooling liquid temperature
Degree detection module 41 detects the coolant temperature of electronic cooling system.The detection battery cooling of battery coolant temperature detection module 42
The coolant temperature of system.First rotating speed acquisition module 43 is used to exist in the coolant temperature of the engine-cooling system detected
Between engine coolant minimum design temperature and the maximum design temperature of engine coolant, sensed according to speed, air conditioning pressure
The sensing signal of device and the ECT detected obtain the first rotating speed of cooling fan under normal operating mode.The
Two rotating speed acquisition modules 44 the power driven system detected coolant temperature in the minimum design temperature of electronic coolant and electronic
Between coolant maximum design temperature, according to the cooling of speed, the sensing signal of A/C pressure sensor and electronic cooling system
Liquid temperature degree obtains the second rotating speed of cooling fan under normal operating mode.3rd rotating speed acquisition module 45 is cold in the battery detected
But the coolant temperature of system is between the minimum design temperature of battery coolant and the maximum design temperature of battery coolant, according to car
Speed, A/C pressure sensor signal and battery coolant system coolant temperature TBObtain cooling fan under normal operating mode
3rd rotating speed.Processing module 47 regard the maximum (top) speed in the first rotating speed, the second rotating speed and the 3rd rotating speed as normal operating mode
The final rotating speed of lower cooling fan.
In the case where considering other cooling systems, the fan rotary speed control system of automobile cooling system is also including other
The system rotating speed acquisition module 48 of detection module 46 and the 4th, other systems detection module 46 detects the cooling liquid temperature of other cooling systems
Degree, the 4th rotating speed acquisition module 48 is set in the coolant temperature of other cooling systems detected in other systems coolant minimum
Between the maximum design temperature of constant temperature degree and other systems coolant, then according to speed, the sensing signal of A/C pressure sensor and
The coolant temperature of other cooling systems obtains the 4th rotating speed of cooling fan under normal operating mode.Obtaining the 4th rotating speed
In the case of, processing module 47 is using the maximum (top) speed in the first rotating speed, the second rotating speed, the 3rd rotating speed and the 4th rotating speed as normal
The final rotating speed of cooling fan under operation mode.
As in the system of fig. 4, current vehicle speed is by conventional vehicle speed sensor or the existing phase of other vehicles
Close sensor and combine required processing acquisition, and the acquisition of A/C pressure sensor signal is also by existing air-conditioning pressure in vehicle
Force snesor is obtained.
Exemplarily, when the engine-cooling system coolant temperature that ECT detection module 40 is detected
TEDesign temperature T minimum less than engine coolantEMINWhen, then operating of the processing module 47 not to cooling fan carries out any control
System, the operating of cooling fan maintains its original state.When the engine that ECT detection module 40 is detected is cold
But liquid temperature degree TEDesign temperature T minimum more than engine coolantEMIN, and less than the maximum design temperature T of engine coolantEMAX
When, cooling fan is in normal operating mode, and obtains fan under normal operating mode by the first rotating speed acquisition module 43
First rotating speed.The ECT signal T detected when ECT detection module 40EMore than engine
Coolant maximum design temperature TEMAXWhen, processing module 47 makes cooling fan be in protection operation mode PCF。
Exemplarily, as the electronic cooling system coolant temperature T that electronic coolant temperature detection module 41 is detectedPIt is small
In the minimum design temperature T of electronic cooling system coolantPMINWhen, then processing module 47 not to the operating of cooling fan at
Reason, makes it maintain previous operating condition.When electronic coolant temperature detection module 41 detects electronic cooling system cooling
Liquid temperature degree TPDesign temperature T minimum more than electronic cooling system coolantPMIN, and set less than electronic cooling system coolant maximum
Constant temperature degree TPMAXWhen, cooling fan is in normal operating mode, and the second rotating speed acquisition module 44 obtains normal operating mode
Under the second rotating speed；The electronic cooling system coolant temperature T detected when electronic coolant temperature detection module 41PMore than electricity
The dynamic maximum design temperature T of cooling system coolantPMAXWhen, processing module 47 makes cooling fan be in protection operation mode PCF。
Exemplarily, as the battery cooling system coolant temperature T that battery coolant temperature detection module 43 is detectedBIt is small
In the minimum design temperature T of battery cooling system coolantBMINWhen, then cooling fan maintains its previous operating condition.When battery is cold
But the battery cooling system coolant temperature T that liquid temperature detecting module 43 is detectedBIt is minimum more than battery cooling system coolant
Design temperature TBMIN, and less than the maximum design temperature T of battery cooling system coolantBMAXWhen, cooling fan is in normal operation mould
Formula, and the 3rd rotating speed is obtained by the 3rd rotating speed acquisition module 45.The battery detected when battery coolant temperature detection module 43
Cooling system coolant temperature TBDesign temperature T maximum more than battery cooling system coolantBMAXWhen, then processing module 47 makes cold
But fan is in protection operation mode PCF。
Exemplarily, as other cooling system coolant temperatures S that other systems detection module 46 is detectedOLess than other
Cooling system coolant minimum design temperature SOMINWhen, then the operating of cooling fan keeps its original state.When other systems inspection
Survey other cooling system coolant temperatures S that module 46 is detectedOMore than the minimum design temperature of other cooling system coolants
SOMIN, and less than the maximum design temperature S of other cooling system coolantsOMAXWhen, cooling fan is in normal operating mode, and
4th rotating speed acquisition module 48 obtains the 4th rotating speed.When other systems detection module 46 detects the coolant of other cooling systems
Temperature SOMore than the maximum design temperature S of other cooling system coolantsOMAXWhen, processing module 47 makes cooling fan be in protection
Operation mode PCF。
Wherein, the first rotating speed acquisition module 43 for example obtains the first rotating speed as follows：According to respectively to be detected
Engine-cooling system coolant temperature TE, vehicle velocity V, the sensing signal P of A/C pressure sensorhFor X, Y, Z coordinate axle institute shape
Into three-dimensional scaling curve map MAPEVDraw the demand rotating speed R of cooling fan under normal operating modeEV1.Under normal operating mode
The demand rotating speed R of cooling fanEV1It is multiplied by with environment temperature TAFor the modifying factor C of variableAEAfterwards, the first rotating speed R is obtainedEVA1。
Wherein, the second rotating speed acquisition module 44 for example obtains the second rotating speed as follows：According to respectively to be detected
Electronic cooling system coolant temperature TP, vehicle velocity V, the sensing signal P of A/C pressure sensorhFormed by X, Y, Z coordinate axle
Three-dimensional scaling curve map MAPPVDraw the demand rotating speed R of cooling fan under normal operating modePV1.It is cold under normal operating mode
But the demand rotating speed R of fanPV1It is multiplied by with ambient temperature signal TAFor the modifying factor C of variableAPAfterwards, the second rotating speed R is obtainedPVA1。
Wherein, the 3rd rotating speed acquisition module 45 for example obtains the 3rd rotating speed according to following manner：According to respectively to be detected
Battery cooling system coolant temperature TB, GES V, A/C pressure sensor signal PhFormed by X, Y, Z coordinate axle
Three-dimensional scaling curve map MAPBVDraw the demand rotating speed R of cooling fan under normal operating modeBV1.Cooled down under normal operating mode
The demand rotating speed R of fanBV1It is multiplied by with ambient temperature signal TAFor the modifying factor C of variableABAfterwards, the 3rd rotating speed R is obtainedBVA1。
Alternatively, other cooling systems are being considered, the 4th rotating speed acquisition module 48 is for example obtained according to following manner and is directed to
4th rotating speed of other cooling systems：Other cooling system coolant temperatures S according to respectively to be detectedO, GES
V, A/C pressure sensor signal PhThe three-dimensional scaling curve map M formed by X, Y, Z coordinate axleAPOVDraw normal operating mode
The demand rotating speed R of lower cooling fanOV1.The demand rotating speed R of cooling fan under normal operating modeOV1It is multiplied by with ambient temperature signal
TAFor the modifying factor C of variableAOAfterwards, the 4th rotating speed R is obtainedOVA1。
For the system shown in Fig. 4, wherein, the selection of control signal as discussed above concerning Fig. 2 description, and in the system
Signal flow illustrates the description as discussed above concerning Fig. 3, does not just repeat herein.
In each example described above, other cooling systems include cooling system for speed changing box and/or charge air cooler cooling system
System etc..
In addition, in above-mentioned each system, term " signal for being directed to certain parameter " is the signal for characterizing the parameter, such as temperature
The signal of degree is the signal for characterizing temperature, and in some explanations herein, parameter can be according to context with the signal for certain parameter
It is substituted for each other.
Perform method of the present invention and/or use system of the present invention, vehicle motor, air-conditioning system can be met
The cooling requirement of the system such as system and motor.Due to protected mode, therefore this method and/or system can be protected farthest
The cooling requirement of each system is protected, and the validity to each desired signal is set（Such as taking substitution value under certain conditions）Ensure
The cooling requirement of each system.
Claims (3)
1. a kind of fan rotational frequency control method of automobile cooling system, it is characterised in that methods described includes：
Detect the coolant temperature of engine-cooling system；
Detect the coolant temperature of electronic cooling system；
Detect the coolant temperature of battery cooling system；
If the coolant temperature of the engine-cooling system detected is in the minimum design temperature of engine coolant and engine
Between coolant maximum design temperature, according to speed, the sensing signal of A/C pressure sensor and the engine cool detected
Liquid temperature degree obtains the first rotating speed of cooling fan under normal operating mode；
If the coolant temperature of the power driven system detected is maximum in the minimum design temperature of electronic coolant and electronic coolant
Between design temperature, obtained according to the coolant temperature of speed, the sensing signal of A/C pressure sensor and electronic cooling system
Second rotating speed of cooling fan under normal operating mode；
If the coolant temperature of the battery cooling system detected is in the minimum design temperature of battery coolant and battery coolant
Between maximum design temperature, according to speed, A/C pressure sensor signal and battery coolant system coolant temperature TBObtain
3rd rotating speed of cooling fan under normal operating mode；And
It regard the maximum in the first rotating speed, the second rotating speed and the 3rd rotating speed as the final of the cooling fan under normal operating mode
Rotating speed；
Detect the coolant temperature of other cooling systems；
If the coolant temperature of other cooling systems detected is with other in the minimum design temperature of other systems coolant
Between the maximum design temperature of coolant of uniting, then according to speed, the sensing signal of A/C pressure sensor and other cooling systems
Coolant temperature obtains the 4th rotating speed of cooling fan under normal operating mode；
It regard the maximum in the first rotating speed, the second rotating speed, the 3rd rotating speed and the 4th rotating speed as the cooling under normal operating mode
The final rotating speed of fan；
Wherein, other described cooling systems include cooling system for speed changing box and/or charge air cooler cooling system, and work as detected hair
The coolant temperature of motivation cooling system is less than the minimum design temperature of engine coolant or the power driven system coolant detected
Temperature is less than the minimum design temperature of engine coolant or the coolant temperature of the battery cooling system detected is cold less than battery
But during liquid minimum design temperature, the fan running of cooling system maintains its original state.
2. the method as described in claim 1, it is characterised in that when the ECT detected is cold more than engine
But the maximum design temperature of liquid or the power driven system coolant temperature detected are more than the maximum design temperature of electronic coolant or institute
When the temperature of the battery cooling system coolant of detection is more than battery coolant maximum design temperature, the fan running of cooling system
In protected mode.
3. a kind of fan rotary speed control system of automobile cooling system, it is characterised in that the system includes：
For the ECT detection module for the coolant temperature for detecting engine-cooling system；
For the electronic coolant temperature detection module for the coolant temperature for detecting electronic cooling system；
For the battery coolant temperature detection module for the coolant temperature for detecting battery cooling system；
First rotating speed acquisition module, it is used for the coolant temperature in the engine-cooling system detected in engine coolant
Between the maximum design temperature of minimum design temperature and engine coolant, according to speed, the sensing signal of A/C pressure sensor
And the ECT detected obtains the first rotating speed of cooling fan under normal operating mode；
Second rotating speed acquisition module, it is used to set in electronic coolant minimum in the coolant temperature of the power driven system detected
Between temperature and the maximum design temperature of electronic coolant, according to speed, the sensing signal of A/C pressure sensor and electronic cooling
The coolant temperature of system obtains the second rotating speed of cooling fan under normal operating mode；
3rd rotating speed acquisition module, it is used for the coolant temperature in the battery cooling system detected in battery coolant minimum
Between design temperature and the maximum design temperature of battery coolant, according to speed, A/C pressure sensor signal and battery coolant
System coolant temperature TBObtain the 3rd rotating speed of cooling fan under normal operating mode；And
Processing module, it is used to regard the maximum (top) speed in the first rotating speed, the second rotating speed and the 3rd rotating speed as normal operating mode
The final rotating speed of lower cooling fan；
Other systems detection module, the coolant temperature for detecting other cooling systems；And
4th rotating speed acquisition module, it is used for the coolant temperature in other cooling systems detected in other systems coolant
Between minimum design temperature and the maximum design temperature of other systems coolant, then according to speed, the sensing of A/C pressure sensor
The coolant temperature of signal and other cooling systems obtains the 4th rotating speed of cooling fan under normal operating mode；
In the case, the processing module is by the maximum (top) speed in the first rotating speed, the second rotating speed, the 3rd rotating speed and the 4th rotating speed
It is used as the final rotating speed of cooling fan under normal operating mode；
Wherein, other described cooling systems include cooling system for speed changing box and/or charge air cooler cooling system.
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| KR101755849B1 (en) * | 2015-09-24 | 2017-07-19 | 현대자동차주식회사 | Control device and method for cooling battery of vehicle |
| US10141618B2 (en) | 2015-07-15 | 2018-11-27 | Hyundai Motor Company | System and method of cooling high voltage battery |
| CN108397274A (en) * | 2018-03-06 | 2018-08-14 | 北京长安汽车工程技术研究有限责任公司 | Automobile fan control method |
| CN110985430B (en) * | 2019-12-25 | 2021-02-19 | 宜宾凯翼汽车有限公司 | Control method of automobile cooling fan |
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| JPS6357812A (en) * | 1986-08-28 | 1988-03-12 | Nippon Radiator Co Ltd | Control device of electromotor-driven cooling fan |
| US20090095462A1 (en) * | 2007-10-12 | 2009-04-16 | Ford Global Technologies, Llc | Method and system for controlling cooling fans in a vehicle |
| CN102362053B (en) * | 2009-03-24 | 2013-07-17 | 株式会社小松制作所 | Cooling fan driving device and fan rotation speed control method |
| IT1404232B1 (en) * | 2010-12-16 | 2013-11-15 | Gate Srl | ROTATION SPEED CONTROL SYSTEM OF AN ELECTRIC FAN ASSOCIATED WITH HEAT EXCHANGERS OF A MOTOR VEHICLE |
| CN102862473B (en) * | 2011-07-06 | 2015-11-25 | 上海汽车集团股份有限公司 | A kind of axial fan method for controlling number of revolution and motor vehicle driven by mixed power |
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