CN108501689A - Thermal management algorithm, system and the vehicle of vehicle high-voltage attachment - Google Patents

Thermal management algorithm, system and the vehicle of vehicle high-voltage attachment Download PDF

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Publication number
CN108501689A
CN108501689A CN201710114156.6A CN201710114156A CN108501689A CN 108501689 A CN108501689 A CN 108501689A CN 201710114156 A CN201710114156 A CN 201710114156A CN 108501689 A CN108501689 A CN 108501689A
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China
Prior art keywords
water pump
vehicle
duty ratio
current temperatures
coolant liquid
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CN201710114156.6A
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CN108501689B (en
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陈磊
贺庆书
刘喜明
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00Arrangement in connection with cooling of propulsion units
    • B60K11/02Arrangement in connection with cooling of propulsion units with liquid cooling
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • G05D23/20Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The present invention provides a kind of thermal management algorithm, system and the vehicle of vehicle high-voltage attachment, this method includes:Obtain the Current Temperatures of coolant liquid in the cooling system of vehicle, wherein the cooling system includes water pump and fan;Judge whether the Current Temperatures of the coolant liquid are more than the first temperature threshold;If the Current Temperatures of the coolant liquid are more than the first temperature threshold, the water pump is started with maximum duty cycle, and the running speed of the fan is controlled according to the Current Temperatures of the coolant liquid.The method of the present invention controls the operating status of water pump and fan according to high pressure attachment radiating requirements, avoids providing excessive heat-sinking capability to reduce power consumption, and then promote course continuation mileage.

Description

Thermal management algorithm, system and the vehicle of vehicle high-voltage attachment
Technical field
The present invention relates to automobile technical field, more particularly to a kind of thermal management algorithm, system and the vehicle of vehicle high-voltage attachment .
Background technology
It compares and conventional fuel oil car, pure electric vehicle uses power battery to drive completely, and vehicle-mounted attachment is all by power electric Pond powers.In the case of battery technology bottleneck, reducing attachment energy consumption becomes the main stream approach for promoting continual mileage.
In the related technology, start vehicle-mounted radiator according to radiating requirements to radiate to the high pressure attachment of vehicle, in order to Meet demand usually provides excessive power consumption, continual mileage is caused to reduce.
Invention content
In view of this, the present invention is directed to propose a kind of control method of Electron pressurizing unit, this method can meet high pressure Under the premise of the radiating requirements of attachment, saves electric energy and promote course continuation mileage.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way:
A kind of thermal management algorithm of vehicle high-voltage attachment, includes the following steps:Obtain coolant liquid in the cooling system of vehicle Current Temperatures, wherein the cooling system includes water pump and fan;Judge whether the Current Temperatures of the coolant liquid are more than the One temperature threshold;If the Current Temperatures of the coolant liquid are more than the first temperature threshold, the water is started with maximum duty cycle It pumps, and controls the running speed of the fan according to the Current Temperatures of the coolant liquid.
Further, further include:When the Current Temperatures of the coolant liquid are less than or equal to first temperature threshold, obtain The sum of the heating power of the high pressure attachment of the vehicle;It is obtained from preset water pump duty ratio-coolant temperature calibration table Water pump duty ratio corresponding with the sum of the heating power;According to the water pump duty ratio corresponding with the sum of the heating power Control the operating status of the water pump.
Further, further include:If the Current Temperatures of the coolant liquid are more than second temperature threshold value, with maximum duty Than starting the water pump, and controls the fan and run with maximum (top) speed;Wherein, the second temperature threshold value is more than the first temperature Threshold value.
Further, the preset water pump duty ratio-coolant temperature calibration table includes the first default water pump duty Than-coolant temperature demarcates table and the second default water pump duty ratio-coolant temperature demarcates table, wherein described first is pre- If water pump duty ratio-coolant temperature calibration table is used to provide the fever work(of the high pressure attachment of the vehicle in the charge state Correspondence value between the sum of rate water pump duty ratio, the second default water pump duty ratio-coolant temperature demarcate table Pair between the sum of the heating power of high pressure attachment for providing the vehicle under the non-charged state water pump duty ratio Answer value.
Compared with the existing technology, the thermal management algorithm of vehicle high-voltage attachment of the present invention has the advantage that:
The thermal management algorithm of vehicle high-voltage attachment of the present invention controls water pump and wind according to high pressure attachment radiating requirements The operating status of fan avoids providing excessive heat-sinking capability to reduce power consumption, and then promotes course continuation mileage.
It is another object of the present invention to propose that a kind of heat management system of vehicle high-voltage attachment, the system can be full Under the premise of the radiating requirements of sufficient high pressure attachment, saves electric energy and promote course continuation mileage.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way:
A kind of heat management system of vehicle high-voltage attachment, including:Coolant temperature acquisition module, for obtaining the cold of vehicle But in system coolant liquid Current Temperatures, wherein the cooling system includes water pump and fan;Control module, the control mould Block is used to judge whether the Current Temperatures of the coolant liquid to be more than the first temperature threshold, and big in the Current Temperatures of the coolant liquid When the first temperature threshold, then the water pump is started with maximum duty cycle, and institute is controlled according to the Current Temperatures of the coolant liquid State the running speed of fan.
Further, the control module is additionally operable to be less than or equal to first temperature when the Current Temperatures of the coolant liquid When threshold value, the sum of the heating power of the high pressure attachment of the vehicle is obtained, and from preset water pump duty ratio-coolant temperature mark Determine to obtain water pump duty ratio corresponding with the sum of the heating power in table, and then according to the sum of described and described heating power The operating status of water pump described in corresponding water pump Duty ratio control.
Further, the control module is additionally operable to be more than second temperature threshold value when the Current Temperatures of the coolant liquid, then Start the water pump with maximum duty cycle, and control the fan and run with maximum (top) speed, wherein the second temperature threshold value is big In the first temperature threshold.
Further, the preset water pump duty ratio-coolant temperature calibration table includes the first default water pump duty Than-coolant temperature demarcates table and the second default water pump duty ratio-coolant temperature demarcates table, wherein described first is pre- If water pump duty ratio-coolant temperature calibration table is used to provide the fever work(of the high pressure attachment of the vehicle in the charge state Correspondence value between the sum of rate water pump duty ratio, the second default water pump duty ratio-coolant temperature demarcate table Pair between the sum of the heating power of high pressure attachment for providing the vehicle under the non-charged state water pump duty ratio Answer value.
Further, the high pressure attachment of the vehicle includes DC power supply, micro-control unit, motor and onboard charger.
The thermal management algorithm of the heat management system of the vehicle high-voltage attachment and above-mentioned vehicle high-voltage attachment relative to Advantage possessed by the prior art is identical, and details are not described herein.
It is another object of the present invention to propose a kind of vehicle, which can be in the radiating requirements for meeting high pressure attachment Under the premise of, it saves electric energy and promotes course continuation mileage.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way:
A kind of vehicle is provided with the heat management system of the vehicle high-voltage attachment as described in above-described embodiment.
The heat management system of the vehicle and above-mentioned vehicle high-voltage attachment compared with the existing technology possessed by advantage Identical, details are not described herein.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the thermal management algorithm of the vehicle high-voltage attachment described in the embodiment of the present invention;
Fig. 2 is the functional block diagram of the thermal management algorithm of the vehicle high-voltage attachment described in the embodiment of the present invention;
Fig. 3 is the structure diagram of the heat management system of the vehicle high-voltage attachment described in the embodiment of the present invention.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is the flow chart of the thermal management algorithm of vehicle high-voltage attachment according to an embodiment of the invention.
As shown in Figure 1, the thermal management algorithm of vehicle high-voltage attachment according to an embodiment of the invention, including walk as follows Suddenly:
S1:Obtain the Current Temperatures of coolant liquid in the cooling system of vehicle.Wherein, cooling system includes water pump and fan.
In one embodiment of the invention, cooling system can be acquired by the way that temperature sensor is arranged in a cooling system In coolant liquid Current Temperatures, temperature sensor is by the temperature information real-time delivery of acquisition to control unit, such as vehicle control Device processed.
S2:Judge whether the Current Temperatures of coolant liquid are more than the first temperature threshold.
Specifically, the first temperature threshold is used to judge whether to start fan and radiate to the high pressure attachment of vehicle, according to The specific performance structural parameters of vehicle set corresponding temperature threshold.
S3:If the Current Temperatures of coolant liquid are more than the first temperature threshold, with maximum duty cycle startup water pump, and according to The running speed of the Current Temperatures control fan of coolant liquid.
Specifically, when the Current Temperatures of coolant liquid are more than the first temperature threshold, expression is individually to carry out cooling not with water pump The cooling requirement of high pressure attachment can be reached, start water pump at this time and fan radiates to high pressure attachment.To high pressure attachment into When row heat dissipation, the running speed of fan is adjusted according to the Current Temperatures of coolant liquid, to ensure to meet the radiating requirements of high pressure attachment, In the case of ensureing high pressure attachment normal operation, battery power consumption is saved, to promote the course continuation mileage of vehicle.
Fig. 2 is the functional block diagram of the thermal management algorithm of the vehicle high-voltage attachment of the embodiment of the present invention.As shown in Fig. 2, at this In one embodiment of invention, the thermal management algorithm of vehicle high-voltage attachment further includes:
S3A-1:When the Current Temperatures of coolant liquid are less than or equal to the first temperature threshold, the hair of the high pressure attachment of vehicle is obtained The sum of thermal power.
In one embodiment of the invention, high pressure attachment include DC power supply DCDC, micro-control unit MCU, motor and Onboard charger OBC.Entire car controller acquires the power of high pressure attachment, by calibration, is multiplied by the power of each high pressure attachment Corresponding coefficient is converted to heating power and sums.
S3A-2:It is obtained from preset water pump duty ratio-coolant temperature calibration table corresponding with the sum of heating power Water pump duty ratio.
In one embodiment of the invention, preset water pump duty ratio-coolant temperature calibration table includes first pre- If water pump duty ratio-coolant temperature calibration table and the second default water pump duty ratio-coolant temperature demarcate table, wherein First default water pump duty ratio-coolant temperature calibration table is used to provide the fever of the high pressure attachment of vehicle in the charge state Correspondence value between the sum of power water pump duty ratio, the second default water pump duty ratio-coolant temperature calibration table is for carrying For the correspondence value between the sum of heating power of high pressure attachment of vehicle water pump duty ratio under non-charged state.
Specifically, according to vehicle operating mode, whether differentiation is divided into two in charging is demarcated tables, i.e. vehicle high pressure in charging Parts are in the only DCDC and OBC of work, and not in charging, high voltage parts are then without OBC.Entire car controller is according to vehicle Whether the duty ratio of corresponding water pump duty ratio-coolant temperature calibration table control water pump is selected in charging process.
S3A-3:According to the operating status of water pump Duty ratio control water pump corresponding with the sum of heating power.The present invention's In one example, the duty ratio for setting water pump is more than calibration threshold value (such as 10%) water pump enabler flags position is then arranged as 1, is less than It is 0 equal to calibration threshold value water pump enabler flags position.The period of water pump duty cycle control signal then use definite value (such as 10ms)。
In one embodiment of the invention, the thermal management algorithm of vehicle high-voltage attachment further includes:
S3B:If the Current Temperatures of coolant liquid are more than second temperature threshold value, water pump is started with maximum duty cycle, and control Fan processed is run with maximum (top) speed.Wherein, second temperature threshold value is more than the first temperature threshold.
Specifically, second temperature threshold value is used to indicate that COOLANT TEMPERATURE, high pressure attachment need utmostly to cool down, this When water pump started with maximum duty cycle, and control fan and run with maximum (top) speed, so that high pressure attachment fast cooling.
The thermal management algorithm of vehicle high-voltage attachment according to the ... of the embodiment of the present invention controls water according to high pressure attachment radiating requirements The operating status of pump and fan avoids providing excessive heat-sinking capability to reduce power consumption, and then promotes course continuation mileage.
Fig. 3 is the structure diagram of the heat management system of vehicle high-voltage attachment according to an embodiment of the invention.Such as Fig. 3 institutes Show, the heat management system of vehicle high-voltage attachment according to an embodiment of the invention, including:Coolant temperature acquisition module 310 With control module 320.
Wherein, coolant temperature acquisition module 310 is used to obtain the Current Temperatures of coolant liquid in the cooling system of vehicle, In, cooling system includes water pump and fan.Control module 320 is used to judge whether the Current Temperatures of coolant liquid to be more than the first temperature Threshold value, and when the Current Temperatures of coolant liquid are more than the first temperature threshold, then water pump is started with maximum duty cycle, and according to cooling The running speed of the Current Temperatures control fan of liquid.
The heat management system of vehicle high-voltage attachment according to the ... of the embodiment of the present invention controls water according to high pressure attachment radiating requirements The operating status of pump and fan avoids providing excessive heat-sinking capability to reduce power consumption, and then promotes course continuation mileage.
In one embodiment of the invention, control module 320 is additionally operable to be less than or equal to the when the Current Temperatures of coolant liquid When one temperature threshold, the sum of the heating power of the high pressure attachment of vehicle is obtained, and from preset water pump duty ratio-coolant temperature It demarcates and obtains water pump duty ratio corresponding with the sum of heating power in table, and then according to water pump corresponding with the sum of heating power The operating status of Duty ratio control water pump.
In one embodiment of the invention, control module 320 is additionally operable to be more than the second temperature when the Current Temperatures of coolant liquid Threshold value is spent, then water pump is started with maximum duty cycle, and control fan and run with maximum (top) speed, wherein second temperature threshold value is more than First temperature threshold.
In one embodiment of the invention, preset water pump duty ratio-coolant temperature calibration table includes first pre- If water pump duty ratio-coolant temperature calibration table and the second default water pump duty ratio-coolant temperature demarcate table, wherein First default water pump duty ratio-coolant temperature calibration table is used to provide the fever of the high pressure attachment of vehicle in the charge state Correspondence value between the sum of power water pump duty ratio, the second default water pump duty ratio-coolant temperature calibration table is for carrying For the correspondence value between the sum of heating power of high pressure attachment of vehicle water pump duty ratio under non-charged state.
In one embodiment of the invention, the high pressure attachment of vehicle includes DC power supply, micro-control unit, motor and vehicle Carry charger.
It should be noted that the specific implementation of the heat management system of the vehicle high-voltage attachment of the embodiment of the present invention and sheet The specific implementation of the thermal management algorithm of the vehicle high-voltage attachment of inventive embodiments is similar, specifically refers to retouching for method part It states, in order to reduce redundancy, is not repeated herein.
Further, embodiment of the invention discloses that a kind of vehicle, is provided with as in any one above-mentioned embodiment The heat management system of vehicle high-voltage attachment.The vehicle can save electric energy under the premise of meeting the radiating requirements of high pressure attachment Promote course continuation mileage.
In addition, other compositions of vehicle according to the ... of the embodiment of the present invention and effect are for those of ordinary skill in the art For be all known, in order to reduce redundancy, be not repeated herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.

Claims (10)

1. a kind of thermal management algorithm of vehicle high-voltage attachment, which is characterized in that include the following steps:
Obtain the Current Temperatures of coolant liquid in the cooling system of vehicle, wherein the cooling system includes water pump and fan;
Judge whether the Current Temperatures of the coolant liquid are more than the first temperature threshold;
If the Current Temperatures of the coolant liquid are more than the first temperature threshold, the water pump, and root are started with maximum duty cycle The running speed of the fan is controlled according to the Current Temperatures of the coolant liquid.
2. the thermal management algorithm of vehicle high-voltage attachment according to claim 1, which is characterized in that further include:
When the Current Temperatures of the coolant liquid are less than or equal to first temperature threshold, the high pressure attachment of the vehicle is obtained The sum of heating power;
Water pump corresponding with the sum of the heating power is obtained from preset water pump duty ratio-coolant temperature calibration table to account for Empty ratio;
According to the operating status of water pump described in the water pump Duty ratio control corresponding with the sum of the heating power.
3. the thermal management algorithm of vehicle high-voltage attachment according to claim 1, which is characterized in that further include:
If the Current Temperatures of the coolant liquid are more than second temperature threshold value, the water pump is started with maximum duty cycle, and control The fan is made to run with maximum (top) speed;
Wherein, the second temperature threshold value is more than the first temperature threshold.
4. the thermal management algorithm of vehicle high-voltage attachment according to claim 2, which is characterized in that the preset water pump accounts for Empty ratio-coolant temperature calibration table includes the first default water pump duty ratio-coolant temperature calibration table and the second default water It pumps duty ratio-coolant temperature and demarcates table, wherein the first default water pump duty ratio-coolant temperature calibration table is used Correspondence between providing the sum of heating power of high pressure attachment of vehicle water pump duty ratio in the charge state takes Value, the second default water pump duty ratio-coolant temperature calibration table is for providing the vehicle under non-charged state Correspondence value between the sum of the heating power of the high pressure attachment water pump duty ratio.
5. a kind of heat management system of vehicle high-voltage attachment, which is characterized in that including:
Coolant temperature acquisition module, the Current Temperatures of coolant liquid in the cooling system for obtaining vehicle, wherein the cooling System includes water pump and fan;
Control module, the control module are used to judge whether the Current Temperatures of the coolant liquid to be more than the first temperature threshold, and When the Current Temperatures of the coolant liquid are more than the first temperature threshold, then the water pump is started with maximum duty cycle, and according to institute The Current Temperatures for stating coolant liquid control the running speed of the fan.
6. the heat management system of vehicle high-voltage attachment according to claim 5, which is characterized in that the control module is also used In when the Current Temperatures of the coolant liquid are less than or equal to first temperature threshold, the hair of the high pressure attachment of the vehicle is obtained The sum of thermal power, and the sum of acquisition and the heating power pair from preset water pump duty ratio-coolant temperature calibration table The water pump duty ratio answered, and then according to the fortune of water pump described in the water pump Duty ratio control corresponding with the sum of the heating power Row state.
7. the heat management system of vehicle high-voltage attachment according to claim 5, which is characterized in that the control module is also used It is more than second temperature threshold value in the Current Temperatures when the coolant liquid, then the water pump is started with maximum duty cycle, and control institute It states fan to run with maximum (top) speed, wherein the second temperature threshold value is more than the first temperature threshold.
8. according to the control system of claim 6 any one of them Electron pressurizing unit, which is characterized in that the preset water pump Duty ratio-coolant temperature calibration table includes that the first default water pump duty ratio-coolant temperature calibration table and second are default Water pump duty ratio-coolant temperature demarcates table, wherein the first default water pump duty ratio-coolant temperature demarcates table Correspondence between the sum of the heating power of high pressure attachment for the providing the vehicle in the charge state water pump duty ratio Value, the second default water pump duty ratio-coolant temperature calibration table is for providing the vehicle under non-charged state The sum of the heating power of the high pressure attachment water pump duty ratio between correspondence value.
9. the heat management system of vehicle high-voltage attachment according to claim 6, which is characterized in that the high pressure of the vehicle is attached Part includes DC power supply, micro-control unit, motor and onboard charger.
10. a kind of vehicle, which is characterized in that the heat pipe just like claim 5-9 any one of them vehicle high-voltage attachmentes is arranged Reason system.
CN201710114156.6A 2017-02-28 2017-02-28 Thermal management method and system for vehicle high-voltage accessory and vehicle Active CN108501689B (en)

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CN111376710A (en) * 2018-12-28 2020-07-07 长城汽车股份有限公司 Vehicle heat dissipation control method and system
CN111376709A (en) * 2018-12-28 2020-07-07 长城汽车股份有限公司 Vehicle heat dissipation control method and system
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CN112498091A (en) * 2020-12-09 2021-03-16 庆铃汽车(集团)有限公司 Pure electric vehicle control method, terminal, medium and vehicle based on NEDC working condition
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CN111376710B (en) * 2018-12-28 2021-11-26 长城汽车股份有限公司 Vehicle heat dissipation control method and system
CN111376710A (en) * 2018-12-28 2020-07-07 长城汽车股份有限公司 Vehicle heat dissipation control method and system
CN111376709A (en) * 2018-12-28 2020-07-07 长城汽车股份有限公司 Vehicle heat dissipation control method and system
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CN113623062A (en) * 2020-05-06 2021-11-09 长城汽车股份有限公司 Self-cleaning control method and device for engine thermal management module
CN113147365A (en) * 2020-08-07 2021-07-23 长城汽车股份有限公司 Cooling control method and device for vehicle, storage medium and electronic device
CN112498091A (en) * 2020-12-09 2021-03-16 庆铃汽车(集团)有限公司 Pure electric vehicle control method, terminal, medium and vehicle based on NEDC working condition
CN112498091B (en) * 2020-12-09 2023-02-28 庆铃汽车(集团)有限公司 Pure electric vehicle control method, terminal, medium and vehicle based on NEDC working condition
CN115023095A (en) * 2021-03-03 2022-09-06 观致汽车有限公司 Motor controller cooling method, storage medium, vehicle, and cooling device
CN114043841A (en) * 2021-11-12 2022-02-15 上汽通用五菱汽车股份有限公司 Automobile thermal management method and device and computer readable storage medium
CN114991934A (en) * 2022-06-10 2022-09-02 上海源悦汽车电子股份有限公司 Engine coolant temperature control method and system and readable storage module
CN114991934B (en) * 2022-06-10 2024-02-06 上海源悦汽车电子股份有限公司 Engine coolant temperature control method, system and readable storage module

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