CN119078492A - Vehicle thermal management system control method, device, hybrid vehicle and storage medium - Google Patents
Vehicle thermal management system control method, device, hybrid vehicle and storage medium Download PDFInfo
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- CN119078492A CN119078492A CN202411586616.1A CN202411586616A CN119078492A CN 119078492 A CN119078492 A CN 119078492A CN 202411586616 A CN202411586616 A CN 202411586616A CN 119078492 A CN119078492 A CN 119078492A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
- F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/16—Other apparatus for heating fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
- F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03118—Multiple tanks, i.e. two or more separate tanks
- B60K2015/03157—Multiple tanks, i.e. two or more separate tanks for supply different types of fuel to the motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
- B60K2015/03355—Arrangements or special measures related to fuel tanks or fuel handling for supplying different types of fuel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT 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
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
- B60K2015/03427—Arrangements or special measures related to fuel tanks or fuel handling for heating fuel, e.g. to avoiding freezing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
本发明属于混动车辆技术领域，公开了车辆热管理系统控制方法、装置、混动车辆及存储介质，该车辆热管理系统控制方法中，获取环境温度并比较环境温度与第一预设温度的大小；若环境温度小于第一预设温度，则控制电池工作，并控制电池热管理水循环管路与副油箱连通，以加热副油箱中的油液；获取副油箱的油液温度并比较副油箱的油液温度与第二预设温度的大小；若副油箱的油液温度不小于第二预设温度，则启动发动机，且副油箱为发动机供油，控制发动机冷却水循环管路与主油箱连通，以加热主油箱中的油液；获取主油箱的油液温度并比较主油箱的油液温度与第三预设温度的大小；若主油箱的油液温度不小于第三预设温度，则切换至主油箱为发动机供油。
The present invention belongs to the technical field of hybrid vehicles, and discloses a vehicle thermal management system control method, device, hybrid vehicle and storage medium. In the vehicle thermal management system control method, the ambient temperature is obtained and compared with a first preset temperature; if the ambient temperature is lower than the first preset temperature, the battery is controlled to operate, and the battery thermal management water circulation pipeline is controlled to be connected with an auxiliary tank to heat the oil in the auxiliary tank; the oil temperature of the auxiliary tank is obtained and compared with a second preset temperature; if the oil temperature of the auxiliary tank is not lower than the second preset temperature, the engine is started, and the auxiliary tank supplies oil to the engine, and the engine cooling water circulation pipeline is controlled to be connected with a main tank to heat the oil in the main tank; the oil temperature of the main tank is obtained and compared with a third preset temperature; if the oil temperature of the main tank is not lower than the third preset temperature, the main tank is switched to supply oil to the engine.
Description
Technical Field
The present invention relates to the field of hybrid vehicles, and in particular, to a method and apparatus for controlling a thermal management system of a vehicle, a hybrid vehicle, and a storage medium.
Background
In a very low temperature environment, diesel oil may solidify, resulting in an engine that cannot be started normally. Therefore, in some vehicles, a main tank and an auxiliary tank are simultaneously arranged, the main tank and the auxiliary tank can supply oil for an engine, the main tank is generally filled with diesel oil with a higher condensation point, such as No. 0 diesel oil, and the auxiliary tank is generally filled with diesel oil with a lower condensation point, such as No. 20 diesel oil. However, if the vehicle is required to run in an extremely low temperature environment, diesel oil having a lower condensation point needs to be filled in the secondary fuel tank, which leads to an increase in running cost.
In this regard, the prior art is generally provided with a heater, which is turned on to heat the diesel oil when the ambient temperature is extremely low, so that the oil temperature rises above the condensation point as soon as possible. However, this solution requires an additional heater, which is complex in overall structure, and in addition, the heater is usually driven by an electric power system, and the energy consumed by the heater can only be used for heating the oil, so that energy waste is caused.
Disclosure of Invention
According to one aspect of the invention, the invention provides a control method of a vehicle thermal management system, which solves the problems that the whole structure is complex, and the energy consumed by a heater can only be used for heating oil, so that the energy waste is caused.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The control method of the vehicle thermal management system comprises a battery thermal management water circulation pipeline and an engine cooling water circulation pipeline, wherein the battery thermal management water circulation pipeline is connected with a battery, water in the battery thermal management water circulation pipeline can exchange heat with the battery, the engine cooling water circulation pipeline is connected with an engine, and water in the engine cooling water circulation pipeline can exchange heat with the engine;
the vehicle thermal management system control method includes:
Acquiring an ambient temperature, and comparing the ambient temperature with a first preset temperature;
If the ambient temperature is smaller than the first preset temperature, controlling the battery to work in a low-temperature current limiting mode, and controlling the battery heat management water circulation pipeline to be communicated with the auxiliary oil tank;
acquiring the oil temperature of the auxiliary oil tank, and comparing the oil temperature of the auxiliary oil tank with a second preset temperature;
If the oil temperature of the auxiliary oil tank is not less than the second preset temperature, starting the engine, controlling the auxiliary oil tank to supply oil to the engine, and controlling the engine cooling water circulation pipeline to be communicated with the main oil tank;
Acquiring the oil temperature of the main oil tank, and comparing the oil temperature of the main oil tank with a third preset temperature, wherein the third preset temperature is greater than the second preset temperature;
and if the oil temperature of the main oil tank is not less than the third preset temperature, switching to the main oil tank to supply oil to the engine.
As a preferable scheme of the control method of the vehicle thermal management system, if the ambient temperature is not less than the first preset temperature, comparing the magnitude of the ambient temperature with a fourth preset temperature, wherein the fourth preset temperature is greater than the first preset temperature;
and if the ambient temperature is smaller than the fourth preset temperature, starting the engine, controlling the auxiliary oil tank to supply oil to the engine, and controlling the engine cooling water circulation pipeline to be communicated with the main oil tank.
As a preferable mode of the control method of the vehicle thermal management system, if the ambient temperature is not less than the fourth preset temperature, the engine is started, and the main oil tank is controlled to supply oil to the engine.
As a preferable scheme of the control method of the vehicle thermal management system, if the oil temperature of the auxiliary oil tank is smaller than the second preset temperature, returning to obtain the oil temperature of the auxiliary oil tank, and comparing the oil temperature of the auxiliary oil tank with the second preset temperature.
As a preferable scheme of the control method of the vehicle thermal management system, if the oil temperature of the main oil tank is smaller than the third preset temperature, returning to obtain the oil temperature of the main oil tank, and comparing the oil temperature of the main oil tank with the third preset temperature.
As a preferable mode of the control method of the vehicle thermal management system, the first preset temperature and the second preset temperature have the same value.
According to another aspect of the present invention, there is provided a vehicle thermal management system control apparatus, the thermal management system including a battery thermal management water circulation line connected to a battery, and water in the battery thermal management water circulation line being capable of heat-exchanging with the battery, and an engine cooling water circulation line connected to an engine, and water in the engine cooling water circulation line being capable of heat-exchanging with the engine;
the vehicle thermal management system control device includes:
The first comparison module is used for acquiring the ambient temperature and comparing the ambient temperature with a first preset temperature;
The auxiliary oil tank heating control module is used for controlling the battery to perform low-temperature current limiting work when the ambient temperature is smaller than the first preset temperature, and controlling the battery heat management water circulation pipeline to be communicated with the auxiliary oil tank;
the second comparison module is used for acquiring the oil temperature of the auxiliary oil tank and comparing the oil temperature of the auxiliary oil tank with a second preset temperature;
The engine starting module is used for starting the engine when the oil temperature of the auxiliary oil tank is not less than the second preset temperature, controlling the auxiliary oil tank to supply oil to the engine, and controlling the engine cooling water circulation pipeline to be communicated with the main oil tank;
The third comparison module is used for acquiring the oil temperature of the main oil tank and comparing the oil temperature of the main oil tank with a third preset temperature, and the third preset temperature is greater than the second preset temperature;
and the main oil tank switching module is used for switching to the main oil tank to supply oil to the engine when the oil temperature of the main oil tank is not less than the third preset temperature.
According to yet another aspect of the present invention, there is provided a hybrid vehicle including a battery, an engine, a main tank, a sub-tank, and a thermal management system including a battery thermal management water circulation line that is connected to the battery and in which water can exchange heat with the battery, and an engine cooling water circulation line that is connected to the engine and in which water can exchange heat with the engine;
the hybrid vehicle further includes:
A controller;
the first temperature sensor is used for acquiring the ambient temperature and sending the acquired ambient temperature to the controller;
The second temperature sensor is used for acquiring the oil temperature of the auxiliary oil tank and sending the acquired oil temperature of the auxiliary oil tank to the controller;
The third temperature sensor is used for acquiring the oil temperature of the main oil tank and sending the acquired oil temperature of the main oil tank to the controller;
a memory for storing one or more programs;
The one or more programs, when executed by the controller, cause the controller to control the hybrid vehicle to implement the vehicle thermal management system control method described above.
As a preferable scheme of the hybrid vehicle, the hybrid vehicle further comprises a battery heat management water tank and an engine cooling water tank;
the battery thermal management water circulation pipeline comprises a first water inlet pipeline and a first circulation pipeline, the first water inlet pipeline is provided with a first three-way valve, three connecting ends of the first three-way valve are respectively connected with the battery thermal management water tank, the battery and the auxiliary oil tank, and the first circulation pipeline is simultaneously connected with the battery and the battery thermal management water tank;
The engine cooling water circulation pipeline comprises a second water inlet pipeline and a second circulation pipeline, the second water inlet pipeline is provided with a second three-way valve, three connecting ends of the second three-way valve are respectively connected with the engine cooling water tank, the engine and the main oil tank, and the second circulation pipeline is simultaneously connected with the engine and the engine cooling water tank.
According to still another aspect of the present invention, there is provided a storage medium having stored thereon a computer program which, when executed by a controller, implements the above-described vehicle thermal management system control method.
The beneficial effects of the invention are as follows:
The invention provides a control method, a device, a hybrid vehicle and a storage medium of a vehicle thermal management system, wherein in the control method of the vehicle thermal management system, the environment temperature is acquired and compared with a first preset temperature, if the environment temperature is smaller than the first preset temperature, the environment temperature is extremely low, the oil in a secondary oil tank can be solidified, and a battery cannot work completely and normally, so that the low-temperature current limiting work of the battery is controlled, a battery thermal management water circulation pipeline is controlled to be communicated with the secondary oil tank, a small amount of heat is generated when the battery works, the heat exchange is generated with water in the battery thermal management water circulation pipeline, and the oil in the secondary oil tank is heated through the water in the battery thermal management water circulation pipeline. If the oil temperature of the auxiliary oil tank is not less than the second preset temperature, the auxiliary oil tank is started to supply oil to the engine, an engine cooling water circulation pipeline is controlled to be communicated with the main oil tank, a large amount of heat is generated after the engine is started, the temperature is also quickly increased after heat exchange is carried out between engine cooling water and the engine, and the oil in the main oil tank is further heated by the engine cooling water. And if the oil temperature of the main oil tank is not less than the third preset temperature, the temperature of the main oil tank can meet the normal use, and the oil in the auxiliary oil tank with a lower condensation point is not used at the moment but is switched to the main oil tank to supply oil to the engine. According to the control method of the vehicle thermal management system, a small amount of heat can be generated by controlling the low-temperature current-limiting operation of the battery under the extremely low-temperature environment, the oil in the auxiliary oil tank is heated by water in the battery thermal management water circulation pipeline, and the oil with a higher condensation point can be filled in the auxiliary oil tank, so that the quality requirement of the oil required to be filled in the auxiliary oil tank is reduced, and the operation cost is saved.
Drawings
FIG. 1 is a flowchart of a method for controlling a thermal management system of a vehicle according to an embodiment of the present invention;
FIG. 2 is a second flowchart of a method for controlling a thermal management system of a vehicle according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a control device of a thermal management system of a vehicle according to an embodiment of the present invention;
Fig. 4 is a schematic view of a vehicle according to an embodiment of the present invention.
In the figure:
300. a first comparison module; 310, a secondary fuel tank heating control module, 320, a second comparison module, 330, an engine starting module, 340, a third comparison module, 350, a main fuel tank switching module;
10. a battery thermal management water tank; 11, a first three-way valve, 12, a battery, 13, a first water inlet pipeline;
20. an engine cooling water tank; 21, a second three-way valve, 22, an engine, 23, a second water inlet pipeline;
31. a secondary oil tank 32, a main oil tank;
40. 41, a memory;
51. first temperature sensor, 52, second temperature sensor, 53, third temperature sensor.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Example 1
A part of vehicles can be provided with a main oil tank and an auxiliary oil tank at the same time, the main oil tank is generally filled with diesel oil with a higher condensation point, and the auxiliary oil tank is generally filled with diesel oil with a lower condensation point, but if the vehicles need to run in an extremely low-temperature environment, the diesel oil with a lower condensation point needs to be filled in the auxiliary oil tank, so that the running cost is increased. In this regard, the prior art is generally provided with a heater, which is turned on to heat the diesel oil when the ambient temperature is extremely low, so that the oil temperature rises above the condensation point as soon as possible. However, this solution requires an additional heater, which is complex in overall structure, and in addition, the heater is usually driven by an electric power system, and the energy consumed by the heater can only be used for heating the oil, so that energy waste is caused.
In view of the above problems, the present embodiment provides a control method for a thermal management system of a vehicle, so as to solve the problems that the overall structure of the prior art is complex, and the energy consumed by a heater can only be used for heating oil, so that the energy is wasted, and the control method can be used in the technical field of hybrid vehicles.
The control method of the vehicle thermal management system is implemented through a thermal management system, wherein the thermal management system comprises a battery thermal management water circulation pipeline and an engine cooling water circulation pipeline, the battery thermal management water circulation pipeline is connected with a battery, water in the battery thermal management water circulation pipeline can exchange heat with the battery, the engine cooling water circulation pipeline is connected with an engine, water in the engine cooling water circulation pipeline can exchange heat with the engine, the engine is simultaneously connected with a main oil tank and an auxiliary oil tank, the condensation point temperature of oil in the auxiliary oil tank is smaller than that of oil in the main oil tank, for example, no. 0 diesel oil can be filled in the main oil tank, the oil filled in the auxiliary oil tank needs to be determined according to actual environment and use requirements, and the oil can be No. 10 diesel oil, no. 20 diesel oil or No. 35 diesel oil.
The vehicle thermal management system control method provided in the embodiment may be implemented by a vehicle thermal management system control device, which may be implemented by software and/or hardware and integrated in a hybrid vehicle. Referring to fig. 1, the method for controlling a thermal management system of a vehicle according to the present embodiment includes the following steps.
S100, acquiring the ambient temperature, and comparing the ambient temperature with a first preset temperature.
If the ambient temperature is less than the first preset temperature, step S110 is performed.
S110, controlling the low-temperature current limiting operation of the battery, and controlling the heat management water circulation pipeline of the battery to be communicated with the auxiliary oil tank.
If the ambient temperature is lower than the first preset temperature, the vehicle is in an extremely low temperature environment, and the ambient temperature is lower than the first preset temperature, so that the oil in the main oil tank and the auxiliary oil tank cannot be normally used at the moment. In addition, the first preset temperature is generally less than the temperature at which the battery can normally operate, so that the battery needs to operate in a low-temperature current-limiting state when the ambient temperature is less than the first preset temperature.
When the battery works, a small amount of heat is generated, the heat exchange is carried out with water in the battery heat management water circulation pipeline, and the oil in the auxiliary oil tank is heated through the water in the battery heat management water circulation pipeline.
S120, acquiring the oil temperature of the auxiliary oil tank, and comparing the oil temperature of the auxiliary oil tank with a second preset temperature.
If the oil temperature of the auxiliary oil tank is not less than the second preset temperature, step S130 is performed.
The second preset temperature is the lowest temperature of the oil in the auxiliary oil tank which can be normally used, and is generally equal to or slightly higher than the condensation point of the oil in the auxiliary oil tank.
Optionally, the purpose of comparing the ambient temperature with the first preset temperature and comparing the oil temperature of the auxiliary oil tank with the second preset temperature is to determine whether the oil of the auxiliary oil tank can be normally used, so in this embodiment, the values of the first preset temperature and the second preset temperature are the same.
And S130, starting the engine, controlling the auxiliary oil tank to supply oil to the engine, and controlling the cooling water circulation pipeline of the engine to be communicated with the main oil tank.
If the oil temperature of the auxiliary oil tank is not less than the second preset temperature, the oil temperature of the auxiliary oil tank can meet the starting requirement, and the engine can be started at the moment.
After the engine is started, a large amount of heat is generated, and after the engine cooling water exchanges heat with the engine, the temperature can be quickly increased, so that the oil in the main oil tank is heated through the engine cooling water.
And S140, acquiring the oil temperature of the main oil tank, and comparing the oil temperature of the main oil tank with a third preset temperature, wherein the third preset temperature is greater than the second preset temperature.
If the oil temperature of the main oil tank is not less than the third preset temperature, step S150 is executed.
The third preset temperature is the lowest temperature of the main oil tank, which can be normally used, and is generally equal to or slightly higher than the condensation point of the oil in the main oil tank.
S150, switching to the main oil tank to supply oil for the engine.
If the oil temperature of the main oil tank is not less than the third preset temperature, the temperature of the main oil tank can meet the requirement of normal use, and the oil in the auxiliary oil tank with a lower condensation point is not used at the moment, but is switched to the main oil tank to supply oil for the engine.
According to the control method of the vehicle thermal management system, a small amount of heat can be generated by controlling the low-temperature current-limiting operation of the battery under the extremely low-temperature environment, the oil in the auxiliary oil tank is heated by the water in the battery thermal management water circulation pipeline, the oil with a higher condensation point can be filled in the auxiliary oil tank, so that the quality requirement of the oil required to be filled in the auxiliary oil tank is reduced, and the operation cost is saved.
Example two
Referring to fig. 2, the present embodiment provides another control method of a thermal management system for a vehicle, which is embodied on the basis of the first embodiment described above. The vehicle thermal management system control method includes the following steps.
S200, acquiring the ambient temperature, and comparing the ambient temperature with a first preset temperature.
If the ambient temperature is less than the first preset temperature, step S210 is performed, and if the ambient temperature is not less than the first preset temperature, step S260 is performed.
And S210, controlling the low-temperature current limiting operation of the battery, and controlling the heat management water circulation pipeline of the battery to be communicated with the auxiliary oil tank.
S220, acquiring the oil temperature of the auxiliary oil tank, and comparing the oil temperature of the auxiliary oil tank with a second preset temperature.
If the temperature of the oil in the auxiliary oil tank is not less than the second preset temperature, step S230 is executed, and if the temperature of the oil in the auxiliary oil tank is less than the second preset temperature, step S220 is returned.
If the oil temperature of the auxiliary oil tank is less than the second preset temperature, it indicates that the oil temperature of the auxiliary oil tank is still lower at this time, and thus step S220 is re-executed, i.e. the oil temperature of the auxiliary oil tank is re-acquired, and the oil temperature of the auxiliary oil tank is compared with the second preset temperature.
And S230, starting the engine, controlling the auxiliary oil tank to supply oil to the engine, and controlling the cooling water circulation pipeline of the engine to be communicated with the main oil tank.
S240, acquiring the oil temperature of the main oil tank, and comparing the oil temperature of the main oil tank with a third preset temperature.
If the oil temperature of the main oil tank is not less than the third preset temperature, executing step S250, and if the oil temperature of the main oil tank is less than the third preset temperature, returning to step S240.
If the oil temperature of the main oil tank is less than the third preset temperature, it indicates that the oil temperature of the main oil tank is still lower at this time, and thus step S240 is re-executed, that is, the oil temperature of the main oil tank is obtained, and the oil temperature of the main oil tank is compared with the third preset temperature.
S250, switching to the main oil tank to supply oil to the engine.
S260, comparing the ambient temperature with a fourth preset temperature, wherein the fourth preset temperature is larger than the first preset temperature;
If the ambient temperature is less than the fourth preset temperature, step S230 is performed, and if the ambient temperature is not less than the fourth preset temperature, step S270 is performed.
If the ambient temperature is not less than the first preset temperature, the ambient temperature is slightly higher, the oil in the auxiliary oil tank can be normally started in the temperature environment, or the oil in the auxiliary oil tank is lower than the ambient temperature, but the temperature of the auxiliary oil tank can be gradually increased at the temperature, and in either case, the battery is not required to be controlled to work and the oil in the auxiliary oil tank is not required to be heated, but whether the ambient temperature can meet the temperature requirement of the oil in the main oil tank is required to be judged.
If the fourth preset temperature is greater than the first preset temperature, the environment temperature is lower than the fourth preset temperature, which indicates that the environment where the hybrid vehicle is located has a lower environment temperature, and indicates that the vehicle is in a low-temperature environment, and the oil in the main oil tank cannot be normally used, so that step S230 is executed, the engine is started, the auxiliary oil tank is controlled to supply oil for the engine, and the cooling water circulation pipeline of the engine is controlled to be communicated with the main oil tank, so that the oil in the main oil tank is heated.
And S270, starting the engine, and controlling the main oil tank to supply oil to the engine.
If the ambient temperature is not less than the fourth preset temperature, the ambient temperature is higher, and the oil in the main oil tank can be normally started in the temperature environment, or the oil in the main oil tank is lower than the ambient temperature, but the temperature of the main oil tank is gradually increased in the temperature. At this time, the oil in the main oil tank is not required to be heated.
Example III
The present embodiment provides a vehicle thermal management system control apparatus for executing the vehicle thermal management system control method in the above embodiment. The heat management system comprises a battery heat management water circulation pipeline and an engine cooling water circulation pipeline, wherein the battery heat management water circulation pipeline is connected with a battery, water in the battery heat management water circulation pipeline can exchange heat with the battery, the engine cooling water circulation pipeline is connected with an engine, water in the engine cooling water circulation pipeline can exchange heat with the engine, the engine is simultaneously connected with a main oil tank and an auxiliary oil tank, and the condensation point temperature of oil in the auxiliary oil tank is smaller than that of oil in the main oil tank.
Referring to fig. 3, the vehicle thermal management system control apparatus includes a first comparison module 300, a secondary tank heating control module 310, a second comparison module 320, an engine starting module 330, a third comparison module 340, and a primary tank switching module 350.
The first comparison module 300 is configured to obtain an ambient temperature and compare the ambient temperature with a first preset temperature, the auxiliary tank heating control module 310 is configured to control the battery to perform low-temperature current limiting operation and control the battery to perform thermal management on the water circulation pipeline to communicate with the auxiliary tank when the ambient temperature is less than the first preset temperature, the second comparison module 320 is configured to obtain an oil temperature of the auxiliary tank and compare the oil temperature of the auxiliary tank with a second preset temperature, the engine starting module 330 is configured to start the engine when the oil temperature of the auxiliary tank is not less than the second preset temperature, control the auxiliary tank to supply oil to the engine and control the engine cooling water circulation pipeline to communicate with the main tank, the third comparison module 340 is configured to obtain an oil temperature of the main tank and compare the oil temperature of the main tank with a third preset temperature, the third preset temperature is greater than the second preset temperature, and the main tank switching module 350 is configured to switch to the main tank to supply oil to the engine when the oil temperature of the main tank is not less than the third preset temperature.
The vehicle thermal management system control device provided by the embodiment obtains the ambient temperature through the first comparison module 300 and compares the ambient temperature with the first preset temperature, controls the low-temperature current limiting operation of the battery through the auxiliary tank heating control module 310 and controls the communication of the battery thermal management water circulation pipeline with the auxiliary tank when the ambient temperature is smaller than the first preset temperature, obtains the oil temperature of the auxiliary tank through the second comparison module 320 and compares the oil temperature of the auxiliary tank with the second preset temperature, starts the engine through the engine starting module 330 and controls the auxiliary tank to supply oil to the engine and controls the communication of the engine cooling water circulation pipeline with the main tank when the oil temperature of the auxiliary tank is not smaller than the second preset temperature, obtains the oil temperature of the main tank through the third comparison module 340 and compares the oil temperature of the main tank with the third preset temperature, and switches to the main tank to supply oil to the engine through the main tank switching module 350 when the oil temperature of the main tank is not smaller than the third preset temperature. The control device of the vehicle thermal management system can generate a small amount of heat by controlling the low-temperature current-limiting operation of the battery under the extremely low-temperature environment, and heat the oil in the auxiliary oil tank through the water in the battery thermal management water circulation pipeline, so that the oil with a higher condensation point can be filled in the auxiliary oil tank, the quality requirement of the oil required to be filled in the auxiliary oil tank is reduced, and the operation cost is saved.
Example IV
The present embodiment provides a hybrid vehicle, referring to fig. 4, the hybrid vehicle includes a battery 12, an engine 22, a main oil tank 32, a sub-oil tank 31, and a thermal management system including a battery thermal management water circulation line and an engine cooling water circulation line, the battery thermal management water circulation line being connected to the battery 12, and water in the battery thermal management water circulation line being capable of heat exchanging with the battery 12, the engine cooling water circulation line being connected to the engine 22, and water in the engine cooling water circulation line being capable of heat exchanging with the engine 22, the engine 22 being connected to both the main oil tank 32 and the sub-oil tank 31, a condensation point of oil in the sub-oil tank 31 being smaller than that in the main oil tank 32.
The hybrid vehicle further includes a controller 40, a first temperature sensor 51, a second temperature sensor 52, a third temperature sensor 53, and a memory 41, wherein the first temperature sensor 51, the second temperature sensor 52, the third temperature sensor 53, and the memory 41 are all connected to the controller 40.
Specifically, the first temperature sensor 51 is used for acquiring an ambient temperature and transmitting the acquired ambient temperature to the controller 40, the second temperature sensor 52 is used for acquiring an oil temperature of the auxiliary oil tank and transmitting the acquired oil temperature of the auxiliary oil tank to the controller 40, and the third temperature sensor 53 is used for acquiring an oil temperature of the main oil tank and transmitting the acquired oil temperature of the main oil tank to the controller 40.
The memory 41 is a computer readable storage medium that can be used to store a software program, a computer executable program, and modules, such as program instructions/modules corresponding to the vehicle thermal management system control method in the embodiment of the present invention. The controller 40 executes various functional applications of the vehicle and data processing by running software programs, instructions and modules stored in the memory 41, that is, implements the vehicle thermal management system control method of the above-described embodiment.
The memory 41 mainly includes a storage program area which can store an operating system, application programs required for at least one function, and a storage data area which can store data created according to the use of the terminal, and the like. In addition, memory 41 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, the memory 41 may further include a memory 41 remotely located relative to the controller 40, which may be connected to the vehicle via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Optionally, the hybrid vehicle further includes a battery thermal management water tank 10 and an engine coolant tank 20. The battery thermal management water circulation pipeline comprises a first water inlet pipeline 13 and a first circulation pipeline (not shown in the figure), the first water inlet pipeline 13 is provided with a first three-way valve 11, and three connecting ends of the first three-way valve 11 are respectively connected with the battery thermal management water tank 10, the battery 12 and the auxiliary oil tank 31 and are used for enabling cooling mediums such as water to enter the battery 12 or the auxiliary oil tank 31 from the battery thermal management water tank 10. The first circulation line is connected to both the battery 12 and the battery thermal management water tank 10, and is used to return a cooling medium such as water to the battery thermal management water tank 10 after heat exchange with the battery 12. The engine cooling water circulation pipeline comprises a second water inlet pipeline 23 and a second circulation pipeline (not shown in the figure), the second water inlet pipeline 23 is provided with a second three-way valve 21, and three connecting ends of the second three-way valve 21 are respectively connected with the engine cooling water tank 20, the engine 22 and the main oil tank 32 and are used for enabling cooling mediums such as water to enter the engine 22 or the main oil tank 32 from the engine cooling water tank 20, and in the control method of the vehicle thermal management system provided by the embodiment, the engine cooling water circulation pipeline is controlled to be communicated with the main oil tank 32 through the communication state of the second three-way valve 21. The second circulation line is connected to both the engine 22 and the engine coolant tank 20, and is configured to return a coolant such as water to the engine coolant tank 20 after heat exchange with the engine 22.
Alternatively, the controller 40 specifically includes a BMS for controlling the start of the battery 12 and monitoring the state of the battery 12, a thermal management controller for controlling the states of the first three-way valve 11 and the second three-way valve 21, and an engine ECU for controlling the start of the engine 22 and controlling the operation state of the engine 22.
The vehicle provided in the fourth embodiment of the present invention belongs to the same inventive concept as the vehicle thermal management system control method provided in the above embodiment, and technical details not described in detail in the present embodiment can be seen in the above embodiment, and the present embodiment has the same advantages of executing the vehicle thermal management system control method.
Example five
A fifth embodiment of the present invention also provides a storage medium having a computer program stored thereon, which when executed by a controller, implements the vehicle thermal management system control method according to the above embodiment of the present invention.
Of course, the storage medium containing the computer executable instructions provided by the embodiment of the invention is not limited to the operations in the vehicle thermal management system control method, but can also execute the related operations in the vehicle thermal management system control device provided by the embodiment of the invention, and has corresponding functions and beneficial effects.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk, or an optical disk of a computer, etc., and include several instructions for causing a computer device (which may be a robot, a personal computer, a server, or a network device, etc.) to execute the method for controlling the thermal management system of the vehicle according to the embodiments of the present invention.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. The control method of the vehicle thermal management system comprises a battery thermal management water circulation pipeline and an engine cooling water circulation pipeline, wherein the battery thermal management water circulation pipeline is connected with a battery, water in the battery thermal management water circulation pipeline can exchange heat with the battery, the engine cooling water circulation pipeline is connected with an engine, and water in the engine cooling water circulation pipeline can exchange heat with the engine;
the vehicle thermal management system control method is characterized by comprising the following steps:
Acquiring an ambient temperature, and comparing the ambient temperature with a first preset temperature;
If the ambient temperature is smaller than the first preset temperature, controlling the battery to work in a low-temperature current limiting mode, and controlling the battery heat management water circulation pipeline to be communicated with the auxiliary oil tank;
acquiring the oil temperature of the auxiliary oil tank, and comparing the oil temperature of the auxiliary oil tank with a second preset temperature;
If the oil temperature of the auxiliary oil tank is not less than the second preset temperature, starting the engine, controlling the auxiliary oil tank to supply oil to the engine, and controlling the engine cooling water circulation pipeline to be communicated with the main oil tank;
Acquiring the oil temperature of the main oil tank, and comparing the oil temperature of the main oil tank with a third preset temperature, wherein the third preset temperature is greater than the second preset temperature;
and if the oil temperature of the main oil tank is not less than the third preset temperature, switching to the main oil tank to supply oil to the engine.
2. The vehicle thermal management system control method according to claim 1, wherein if the ambient temperature is not less than the first preset temperature, comparing the magnitude of the ambient temperature with a fourth preset temperature, the fourth preset temperature being greater than the first preset temperature;
and if the ambient temperature is smaller than the fourth preset temperature, starting the engine, controlling the auxiliary oil tank to supply oil to the engine, and controlling the engine cooling water circulation pipeline to be communicated with the main oil tank.
3. The control method of the vehicle thermal management system according to claim 2, wherein if the ambient temperature is not less than the fourth preset temperature, the engine is turned on, and the main tank is controlled to supply oil to the engine.
4. The method according to claim 1, wherein if the oil temperature of the auxiliary oil tank is less than the second preset temperature, the oil temperature of the auxiliary oil tank is obtained in a returning manner, and the oil temperature of the auxiliary oil tank is compared with the second preset temperature.
5. The method according to claim 1, wherein if the oil temperature of the main oil tank is less than the third preset temperature, the oil temperature of the main oil tank is obtained, and the oil temperature of the main oil tank is compared with the third preset temperature.
6. The vehicle thermal management system control method according to claim 1, wherein the first preset temperature is the same as the second preset temperature in value.
7. The vehicle heat management system control device comprises a battery heat management water circulation pipeline and an engine cooling water circulation pipeline, wherein the battery heat management water circulation pipeline is connected with a battery, water in the battery heat management water circulation pipeline can exchange heat with the battery, the engine cooling water circulation pipeline is connected with an engine, and water in the engine cooling water circulation pipeline can exchange heat with the engine;
the vehicle thermal management system control device is characterized by comprising:
The first comparison module is used for acquiring the ambient temperature and comparing the ambient temperature with a first preset temperature;
The auxiliary oil tank heating control module is used for controlling the battery to perform low-temperature current limiting work when the ambient temperature is smaller than the first preset temperature, and controlling the battery heat management water circulation pipeline to be communicated with the auxiliary oil tank;
the second comparison module is used for acquiring the oil temperature of the auxiliary oil tank and comparing the oil temperature of the auxiliary oil tank with a second preset temperature;
The engine starting module is used for starting the engine when the oil temperature of the auxiliary oil tank is not less than the second preset temperature, controlling the auxiliary oil tank to supply oil to the engine, and controlling the engine cooling water circulation pipeline to be communicated with the main oil tank;
The third comparison module is used for acquiring the oil temperature of the main oil tank and comparing the oil temperature of the main oil tank with a third preset temperature, and the third preset temperature is greater than the second preset temperature;
and the main oil tank switching module is used for switching to the main oil tank to supply oil to the engine when the oil temperature of the main oil tank is not less than the third preset temperature.
8. The hybrid vehicle comprises a battery, an engine, a main oil tank, an auxiliary oil tank and a thermal management system, wherein the thermal management system comprises a battery thermal management water circulation pipeline and an engine cooling water circulation pipeline, the battery thermal management water circulation pipeline is connected with the battery, water in the battery thermal management water circulation pipeline can exchange heat with the battery, the engine cooling water circulation pipeline is connected with the engine, and water in the engine cooling water circulation pipeline can exchange heat with the engine;
the hybrid vehicle is characterized by further comprising:
A controller;
the first temperature sensor is used for acquiring the ambient temperature and sending the acquired ambient temperature to the controller;
The second temperature sensor is used for acquiring the oil temperature of the auxiliary oil tank and sending the acquired oil temperature of the auxiliary oil tank to the controller;
The third temperature sensor is used for acquiring the oil temperature of the main oil tank and sending the acquired oil temperature of the main oil tank to the controller;
a memory for storing one or more programs;
the one or more programs, when executed by the controller, cause the controller to control a hybrid vehicle to implement the vehicle thermal management system control method of any one of claims 1-6.
9. The hybrid vehicle of claim 8, further comprising a battery thermal management water tank and an engine cooling water tank;
the battery thermal management water circulation pipeline comprises a first water inlet pipeline and a first circulation pipeline, the first water inlet pipeline is provided with a first three-way valve, three connecting ends of the first three-way valve are respectively connected with the battery thermal management water tank, the battery and the auxiliary oil tank, and the first circulation pipeline is simultaneously connected with the battery and the battery thermal management water tank;
The engine cooling water circulation pipeline comprises a second water inlet pipeline and a second circulation pipeline, the second water inlet pipeline is provided with a second three-way valve, three connecting ends of the second three-way valve are respectively connected with the engine cooling water tank, the engine and the main oil tank, and the second circulation pipeline is simultaneously connected with the engine and the engine cooling water tank.
10. A storage medium having a computer program stored thereon, wherein the program, when executed by a controller, implements the vehicle thermal management system control method according to any one of claims 1 to 6.
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| CN104884777A (en) * | 2013-02-25 | 2015-09-02 | 雷诺股份公司 | Method and device for heating fuel for an internal combustion engine |
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