CN113879072A - Control method and device of vehicle-mounted air conditioning system - Google Patents
Control method and device of vehicle-mounted air conditioning system Download PDFInfo
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- CN113879072A CN113879072A CN202111286400.XA CN202111286400A CN113879072A CN 113879072 A CN113879072 A CN 113879072A CN 202111286400 A CN202111286400 A CN 202111286400A CN 113879072 A CN113879072 A CN 113879072A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 77
- 239000003507 refrigerant Substances 0.000 claims abstract description 37
- 239000000110 cooling liquid Substances 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
-
- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
-
- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
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- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Transportation (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The embodiment of the application provides a control method and a control device for a vehicle-mounted air conditioning system, wherein the method comprises the following steps: under the condition that the vehicle-mounted air conditioning system operates, acquiring the current temperature of a vehicle battery; if the current temperature is greater than or equal to a first preset temperature value, controlling the vehicle-mounted air conditioning system to enter a first mode; the first mode is that the vehicle-mounted air conditioning system is communicated with a battery cooling system of a vehicle, and an electric compressor of the vehicle-mounted air conditioning system conveys refrigerant to the battery cooling system so as to cool a battery of the vehicle. Like this, when the temperature of vehicle battery is greater than first preset temperature value, on-vehicle air conditioning system's electric compressor carries the refrigerant to battery cooling system to cool off the battery of vehicle, thereby improve the life of battery, reduce the change frequency.
Description
Technical Field
The application relates to the field of vehicle control, in particular to a control method and device of a vehicle-mounted air conditioning system.
Background
With the global shortage of energy and the increasing aggravation of the problem of environmental pollution, the research and development of new energy automobiles are in progress. The vehicle-mounted air conditioning system is used as an indispensable key system of a new energy vehicle type, and the riding comfort is influenced by the performance of the vehicle-mounted air conditioning system in the running process of the whole vehicle.
At present, under the condition that a vehicle-mounted air conditioning system operates, a battery needs to provide electric quantity required for ensuring normal operation of the vehicle-mounted air conditioning system, the temperature of the battery is continuously increased along with the increase of the load required by the vehicle-mounted air conditioning system, the service life of the battery is shortened, and the replacement frequency is high.
Disclosure of Invention
The embodiment of the application provides a control method and device of a vehicle-mounted air conditioning system, which can solve the problems of short service life and high replacement frequency of a battery.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, the present application provides a method for controlling a vehicle-mounted air conditioning system, including:
under the condition that the vehicle-mounted air conditioning system operates, acquiring the current temperature of a vehicle battery;
if the current temperature is greater than or equal to a first preset temperature value, controlling the vehicle-mounted air conditioning system to enter a first mode;
the first mode is that the vehicle-mounted air conditioning system is communicated with a battery cooling system of a vehicle, and an electric compressor of the vehicle-mounted air conditioning system conveys refrigerant to the battery cooling system so as to cool a battery of the vehicle.
In a second aspect, the present application provides a control device of an in-vehicle air conditioning system, comprising:
the first acquisition module is used for acquiring the current temperature of a vehicle battery under the condition that the vehicle-mounted air conditioning system is operated;
the first control module is used for controlling the vehicle-mounted air conditioning system to enter a first mode if the current temperature is greater than or equal to a first preset temperature value;
the first mode is that the vehicle-mounted air conditioning system is communicated with a battery cooling system of a vehicle, and an electric compressor of the vehicle-mounted air conditioning system conveys refrigerant to the battery cooling system so as to cool a battery of the vehicle.
In the embodiment of the application, under the condition that the vehicle-mounted air conditioning system runs, the current temperature of a vehicle battery is obtained; if the current temperature is greater than or equal to a first preset temperature value, controlling the vehicle-mounted air conditioning system to enter a first mode; the first mode is that the vehicle-mounted air conditioning system is communicated with a battery cooling system of a vehicle, and an electric compressor of the vehicle-mounted air conditioning system conveys refrigerant to the battery cooling system so as to cool a battery of the vehicle. Therefore, when the temperature of the vehicle battery is higher than the first preset temperature value, the electric compressor of the vehicle-mounted air conditioning system conveys the refrigerant to the battery cooling system so as to cool the battery of the vehicle, the service life of the battery is prolonged, and the replacement frequency is reduced.
Drawings
Fig. 1 is a schematic flowchart of a control method of a vehicle-mounted air conditioning system according to an embodiment of the present application;
fig. 2 is a schematic diagram of a control device of a vehicle air conditioning system according to an embodiment of the present disclosure;
fig. 3 is another schematic diagram of a control device of an on-vehicle air conditioning system according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
Referring to fig. 1, fig. 1 is a flowchart of a control method of a vehicle air conditioning system according to an embodiment of the present application, where the method includes:
the vehicle-mounted air conditioning system can control the running state of the vehicle to be turned on and turned off in the modes of physical keys, voice, gestures and the like arranged on the vehicle.
The current temperature of the vehicle battery is a real-time temperature value of the vehicle battery acquired through the temperature sensor, specifically, the suitable temperature of the battery core is 0-40 ℃, so the suitable working temperature of the vehicle battery is 0-40 ℃, the best power output and input, the maximum available energy and the longest cycle life of the vehicle can be realized, and the activity of the battery core can be influenced and irreversible damage can be caused when the temperature is too high or too low, and the service life of the battery core can be influenced.
the first mode is that the vehicle-mounted air conditioning system is communicated with a battery cooling system of a vehicle, and an electric compressor of the vehicle-mounted air conditioning system conveys refrigerant to the battery cooling system so as to cool a battery of the vehicle.
In specific implementation, the first preset temperature value may be a critical value when the battery enters a high-temperature interval from a middle-temperature interval, and when the current temperature of the battery is obtained to be greater than or equal to the critical value, the vehicle control system controls the vehicle-mounted air conditioning system to enter the first mode, that is, the electric compressor of the vehicle-mounted air conditioning system is communicated with the battery cooling system by opening the first electromagnetic valve, and at this time, the electric compressor of the vehicle-mounted air conditioning system delivers the refrigerant to the battery cooling system to cool the battery, so that the vehicle battery is located in an appropriate working temperature interval. For example: when the current temperature of the battery is greater than or equal to 40 degrees, the electric compressor of the vehicle air conditioning system delivers refrigerant to the battery cooling system to preferentially cool the battery.
In the embodiment of the application, the current temperature of the vehicle battery is obtained under the condition that the vehicle-mounted air conditioning system operates; if the current temperature is greater than or equal to a first preset temperature value, controlling the vehicle-mounted air conditioning system to enter a first mode; the first mode is that the vehicle-mounted air conditioning system is communicated with a battery cooling system of a vehicle, and an electric compressor of the vehicle-mounted air conditioning system conveys refrigerant to the battery cooling system so as to cool a battery of the vehicle. Therefore, when the temperature of the vehicle battery is higher than the first preset temperature value, the electric compressor of the vehicle-mounted air conditioning system conveys the refrigerant to the battery cooling system so as to cool the battery of the vehicle, the service life of the battery is prolonged, and the replacement frequency is reduced.
Optionally, the method further includes:
if the current temperature is lower than a second preset temperature value, controlling the vehicle-mounted air conditioning system to enter a second mode;
the second mode is that the electric compressor is disconnected with the vehicle-mounted air conditioning system, and the vehicle-mounted air conditioning system is independently operated in a refrigerating mode;
the first preset temperature value is greater than the second preset temperature value.
The second preset temperature value is a value smaller than the first preset temperature value, and the second preset temperature value can be determined according to whether the vehicle battery is in the efficient operation interval or not. When the current temperature of the battery is smaller than a second preset temperature value, the vehicle control system controls the vehicle-mounted air conditioning system to enter a second mode, namely the electric compressor of the vehicle-mounted air conditioning system is disconnected with the battery cooling system by closing the second electromagnetic valve, at the moment, the vehicle-mounted air conditioning system is disconnected with the electric compressor, and the vehicle-mounted air conditioning system independently performs refrigerating operation to adjust the temperature in the compartment, so that the riding comfort is improved. For example: when the current temperature of the battery is less than 30 ℃, the vehicle-mounted air conditioning system performs cooling operation so as to preferentially adjust the temperature in the compartment.
Optionally, before step 110, the method further includes:
acquiring the temperature of cooling liquid for cooling the battery;
generally, the cooling modes of the vehicle battery are mainly classified into three major categories, air cooling, liquid cooling, and direct cooling. The liquid cooling mode is used as the main flow of the cooling mode, namely, the battery adopts a cooling liquid cooling mode to exchange heat. By introducing the refrigerant of the vehicle-mounted air conditioning system, the refrigerant absorbs the heat transferred from the battery cooling loop in the evaporator and takes away the heat, so that the aim of cooling the power battery is fulfilled. The structure of the heat exchanger generally comprises a heat exchanger main body, an external evaporator, two cooling liquid inlet and outlet pipes (one inlet and one outlet), and two cooling medium pipes (one inlet and one outlet).
If the temperature of the cooling liquid is lower than a third preset temperature value, and the current temperature is higher than or equal to the first preset temperature value, controlling the vehicle-mounted air conditioning system to enter a third mode;
wherein the third mode is the electric compressor being stopped.
In a specific implementation, the temperature of the cooling liquid is obtained through a temperature sensor, wherein the third preset temperature value is a value smaller than the second preset temperature value, and the value is taken according to the appropriate temperature of the cooling liquid. When the temperature of the cooling liquid for cooling the battery is smaller than a third preset temperature value and the current temperature of the vehicle battery is larger than or equal to the first preset temperature value, the battery cooling system is judged to be in fault, the vehicle control system controls the vehicle-mounted air conditioning system to enter a third mode, namely, the electric compressor of the vehicle-mounted air conditioning system stops running, and therefore driving safety is guaranteed. For example: when the current temperature of the battery is 40 ℃ and the temperature of the battery cooling liquid is-10 ℃, the battery is judged to have a problem in heat exchange, and the battery needs to be replaced to ensure the driving safety.
Optionally, the method further includes:
if the current temperature is greater than or equal to the first preset temperature value and less than the second preset temperature value, controlling the vehicle-mounted air conditioning system to enter a fourth mode;
wherein the fourth mode is that the on-board air conditioning system is in communication with a battery cooling system of the vehicle, and the electric compressor delivers refrigerant to the battery cooling system of the vehicle and the on-board air conditioning system.
In specific implementation, when the current temperature of the vehicle battery is any value of a first preset temperature value and a second preset temperature value, the vehicle control system controls the vehicle-mounted air conditioning system to enter a fourth mode, namely, an electric compressor of the vehicle-mounted air conditioning system is communicated with the battery cooling system and the vehicle-mounted air conditioning system by opening a first electromagnetic valve and a second electromagnetic valve, at the moment, the vehicle-mounted air conditioning system is communicated with the battery cooling system, the required load of the vehicle-mounted air conditioning system is increased along with the increase of the operation time of the vehicle-mounted air conditioning system, so that the temperature of the battery is continuously increased, and the electric compressor conveys a refrigerant to the vehicle-mounted air conditioning system and the battery cooling system, so that the two systems operate simultaneously. For example: when the current temperature of the battery is greater than or equal to 30 degrees and less than 40 degrees, the electric compressor can deliver the amount of refrigerant required by the vehicle-mounted air conditioning system and the battery cooling system to the respective systems, so that the vehicle battery is cooled and the vehicle-mounted air conditioning system performs cooling operation. The electric compressor can preferentially convey the refrigerant required by battery cooling to the battery cooling system, and after the battery temperature is lower than a first preset temperature value, the residual refrigerant is conveyed to the vehicle-mounted air conditioning system to enable the vehicle-mounted air conditioning system to carry out refrigerating operation; the electric compressor respectively conveys the refrigerant quantity required by the battery cooling system and the refrigerant quantity required by the vehicle-mounted air conditioning system to respective systems, at the moment, the rotating speed of the electric compressor is increased, and the refrigerating effect of the vehicle-mounted air conditioning system can meet the expected requirement while the temperature of the vehicle battery is at the proper working temperature.
Optionally, the rotation speed of the electric compressor in the fourth mode is greater than the rotation speed of the electric compressor in the second mode;
or, the rotation speed of the electric compressor in the fourth mode is less than the rotation speed of the electric compressor in the first mode.
The rotating speed of the electric compressor is related to the refrigerating capacity required by the battery cooling system and the vehicle-mounted air conditioning system, specifically, when the vehicle-mounted air conditioning system is in the first mode, the vehicle-mounted air conditioning system is communicated with the battery cooling system, the electric compressor of the vehicle-mounted air conditioning system conveys the refrigerant to the battery cooling system to cool the vehicle battery, the amount of the refrigerant is the largest for the cooling efficiency, and the rotating speed of the electric compressor is the maximum value; when the vehicle-mounted air conditioning system is in the second mode, the electric compressor is disconnected with the vehicle-mounted air conditioning system, and at the moment, the rotating speed of the electric compressor is the minimum value; and when the vehicle-mounted air conditioning system is in the fourth mode, the vehicle-mounted air conditioning system is communicated with the battery cooling system, at the moment, the rotating speed of the electric compressor is determined according to the air-conditioning air outlet and the temperature of cooling liquid for cooling the battery, and at the moment, the rotating speed of the electric compressor is greater than that in the second mode or less than that in the first mode.
For a better understanding of the present application, the following examples are set forth to illustrate:
the first embodiment is as follows:
when a vehicle exposed to a high-temperature environment for a long time is started, the battery temperature of the vehicle is high, and the vehicle-mounted air conditioning system needs to be refrigerated;
when the battery temperature detected by the temperature sensor is greater than a first preset temperature value, for example: setting a first preset temperature value to be 40 ℃, controlling a first electromagnetic valve to be opened when the current temperature of the battery is greater than or equal to 40 ℃, communicating a vehicle-mounted air conditioning system with a battery cooling system, and conveying a refrigerant to the battery cooling system through a first electromagnetic valve by an electric compressor of the vehicle-mounted air conditioning system so as to cool the battery; in addition, the temperature of cooling liquid for cooling the battery is detected, when the temperature of the cooling liquid is smaller than a third preset temperature value, the battery cooling system is judged to be in fault, the battery has a heat exchange problem, and the electric compressor stops running;
when the battery temperature is detected to be less than a second preset temperature value, for example: setting a second preset temperature value to be 30 ℃, and when the current temperature of the battery is less than 30 ℃, controlling the second electromagnetic valve to be opened, disconnecting the vehicle-mounted air-conditioning system from the battery cooling system, and performing independent refrigeration operation on the vehicle-mounted air-conditioning system;
when it is detected that the battery temperature is greater than or equal to a second preset temperature value and less than a first preset temperature value, for example: when the current temperature of the battery is greater than or equal to 30 ℃ and less than 40 ℃, the first electromagnetic valve and the second electromagnetic valve are both opened, the vehicle-mounted air-conditioning system is communicated with the battery cooling system, the electric compressor respectively enables the refrigerant to pass through the first electromagnetic valve and the second electromagnetic valve, the refrigerant quantity required by the battery cooling system and the refrigerant quantity required by the vehicle-mounted air-conditioning system are respectively conveyed to respective systems, at the moment, the rotating speed of the electric compressor is increased, the temperature of the vehicle battery is cooled, the temperature of the vehicle battery is enabled to be at the proper working temperature, and meanwhile, the refrigerating effect of the vehicle-mounted air-conditioning system can also reach the expected requirement.
Example two:
in the long-time running process of the vehicle, under the condition that the vehicle-mounted air conditioning system runs, the temperature of a battery of the vehicle is continuously increased;
when the battery temperature detected by the temperature sensor is greater than a first preset temperature value, for example: setting a first preset temperature value to be 40 ℃, controlling a first electromagnetic valve to be opened when the current temperature of the battery is greater than or equal to 40 ℃, communicating a vehicle-mounted air conditioning system with a battery cooling system, and conveying a refrigerant to the battery cooling system through a first electromagnetic valve by an electric compressor of the vehicle-mounted air conditioning system so as to cool the battery;
after cooling for a period of time, when the battery temperature is greater than or equal to a second preset temperature value and less than a first preset temperature value, for example: when the current temperature of the battery is more than or equal to 30 ℃ and less than 40 ℃, the first electromagnetic valve and the second electromagnetic valve are both opened, the vehicle-mounted air-conditioning system is communicated with the battery cooling system, the electric compressor respectively passes through the first electromagnetic valve and the second electromagnetic valve to respectively convey the refrigerant quantity required by the battery cooling system and the refrigerant quantity required by the vehicle-mounted air-conditioning system to the respective systems, the required load is increased along with the increase of the operation time of the vehicle-mounted air-conditioning system, so that the temperature of the battery is continuously increased, the electric compressor preferably conveys the refrigerant quantity required by the battery cooling to the battery cooling system to maintain the temperature of the battery to be less than 40 ℃, and then conveys the residual refrigerant quantity to the vehicle-mounted air-conditioning system to enable the vehicle-mounted air-conditioning system to carry out refrigeration operation, at the moment, the rotating speed of the electric compressor is unchanged, and in order to ensure that the temperature of the vehicle battery is at the proper working temperature, the refrigeration effect of the vehicle-mounted air conditioning system is poor.
Referring to fig. 2, fig. 2 is a schematic diagram of a control device of a vehicle air conditioning system according to an embodiment of the present application, where the control device includes:
the first obtaining module 210 is configured to obtain a current temperature of a vehicle battery when the vehicle-mounted air conditioning system is running;
the first control module 220 is configured to control the vehicle-mounted air conditioning system to enter a first mode if the current temperature is greater than or equal to a first preset temperature value;
the first mode is that the vehicle-mounted air conditioning system is communicated with a battery cooling system of a vehicle, and an electric compressor of the vehicle-mounted air conditioning system conveys refrigerant to the battery cooling system so as to cool a battery of the vehicle.
Optionally, the apparatus further comprises:
the second control module 230 is configured to control the vehicle-mounted air conditioning system to enter a second mode if the current temperature is lower than a second preset temperature value;
the second mode is that the electric compressor is disconnected with the vehicle-mounted air conditioning system, and the vehicle-mounted air conditioning system is independently operated in a refrigerating mode;
the first preset temperature value is greater than the second preset temperature value.
Optionally, referring to fig. 3, fig. 3 is another schematic diagram of a control device of a vehicle air conditioning system according to an embodiment of the present application, where the device further includes:
a second obtaining module 240, configured to obtain a temperature of a cooling liquid for cooling the battery;
the third control module 250 is configured to control the vehicle-mounted air conditioning system to enter a third mode if the temperature of the coolant is less than a third preset temperature value and the current temperature is greater than or equal to the first preset temperature value;
wherein the third mode is the electric compressor being stopped.
Optionally, the apparatus further comprises:
the fourth control module 260 is configured to control the vehicle-mounted air conditioning system to enter a fourth mode if the current temperature is greater than or equal to the first preset temperature value and is less than the second preset temperature value;
wherein the fourth mode is that the on-board air conditioning system is in communication with a battery cooling system of the vehicle, and the electric compressor delivers refrigerant to the battery cooling system of the vehicle and the on-board air conditioning system.
Optionally, the rotation speed of the electric compressor in the fourth mode is greater than the rotation speed of the electric compressor in the second mode;
or, the rotation speed of the electric compressor in the fourth mode is less than the rotation speed of the electric compressor in the first mode.
It should be noted that this apparatus corresponds to the method for controlling the in-vehicle air conditioning system shown in fig. 1, and all the embodiments of the method for controlling the in-vehicle air conditioning system shown in fig. 1 are applicable to this apparatus embodiment and can achieve the same technical effects.
While the present embodiments have been described with reference to the accompanying drawings, the present embodiments are not limited to the above-described embodiments, which are merely illustrative and not restrictive, and it will be apparent to those of ordinary skill in the art that many more modifications and variations can be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A control method of a vehicle-mounted air conditioning system is characterized by comprising the following steps:
under the condition that the vehicle-mounted air conditioning system operates, acquiring the current temperature of a vehicle battery;
if the current temperature is greater than or equal to a first preset temperature value, controlling the vehicle-mounted air conditioning system to enter a first mode;
the first mode is that the vehicle-mounted air conditioning system is communicated with a battery cooling system of a vehicle, and an electric compressor of the vehicle-mounted air conditioning system conveys refrigerant to the battery cooling system so as to cool a battery of the vehicle.
2. The control method of the vehicle air conditioning system according to claim 1, characterized by further comprising:
if the current temperature is lower than a second preset temperature value, controlling the vehicle-mounted air conditioning system to enter a second mode;
the second mode is that the electric compressor is disconnected with the vehicle-mounted air conditioning system, and the vehicle-mounted air conditioning system is independently operated in a refrigerating mode;
the first preset temperature value is greater than the second preset temperature value.
3. The control method of the on-vehicle air conditioning system according to claim 1, characterized by further comprising, before acquiring the current temperature of the vehicle battery in the case where the on-vehicle air conditioning system is operating:
acquiring the temperature of cooling liquid for cooling the battery;
if the temperature of the cooling liquid is lower than a third preset temperature value, and the current temperature is higher than or equal to the first preset temperature value, controlling the vehicle-mounted air conditioning system to enter a third mode;
wherein the third mode is the electric compressor being stopped.
4. The control method of the vehicle air conditioning system according to claim 2, characterized by further comprising:
if the current temperature is greater than or equal to the first preset temperature value and less than the second preset temperature value, controlling the vehicle-mounted air conditioning system to enter a fourth mode;
wherein the fourth mode is that the on-board air conditioning system is in communication with a battery cooling system of the vehicle, and the electric compressor delivers refrigerant to the battery cooling system of the vehicle and the on-board air conditioning system.
5. The control method of the on-vehicle air conditioning system according to claim 4, characterized in that the rotational speed of the electric compressor in the fourth mode is greater than the rotational speed of the electric compressor in the second mode;
or, the rotation speed of the electric compressor in the fourth mode is less than the rotation speed of the electric compressor in the first mode.
6. A control device of a vehicle-mounted air conditioning system, characterized by comprising:
the first acquisition module is used for acquiring the current temperature of a vehicle battery under the condition that the vehicle-mounted air conditioning system is operated;
the first control module is used for controlling the vehicle-mounted air conditioning system to enter a first mode if the current temperature is greater than or equal to a first preset temperature value;
the first mode is that the vehicle-mounted air conditioning system is communicated with a battery cooling system of a vehicle, and an electric compressor of the vehicle-mounted air conditioning system conveys refrigerant to the battery cooling system so as to cool a battery of the vehicle.
7. The control device of the in-vehicle air conditioning system according to claim 6, characterized by further comprising:
the second control module is used for controlling the vehicle-mounted air conditioning system to enter a second mode if the current temperature is lower than a second preset temperature value;
the second mode is that the electric compressor is disconnected with the vehicle-mounted air conditioning system, and the vehicle-mounted air conditioning system is independently operated in a refrigerating mode;
the first preset temperature value is greater than the second preset temperature value.
8. The control device of the on-vehicle air conditioning system according to claim 6, characterized by further comprising, before the acquisition module:
the second acquisition module is used for acquiring the temperature of cooling liquid for cooling the battery;
the third control module is used for controlling the vehicle-mounted air conditioning system to enter a third mode if the temperature of the cooling liquid is less than a third preset temperature value and the current temperature is greater than or equal to the first preset temperature value;
wherein the third mode is the electric compressor being stopped.
9. The control device of the in-vehicle air conditioning system according to claim 7, characterized by further comprising:
the fourth control module is used for controlling the vehicle-mounted air conditioning system to enter a fourth mode if the current temperature is greater than or equal to the first preset temperature value and less than the second preset temperature value;
wherein the fourth mode is that the on-board air conditioning system is in communication with a battery cooling system of the vehicle, and the electric compressor delivers refrigerant to the battery cooling system of the vehicle and the on-board air conditioning system.
10. The control device of the on-vehicle air conditioning system according to claim 9, characterized in that the rotational speed of the electric compressor in the fourth mode is greater than the rotational speed of the electric compressor in the second mode;
or, the rotation speed of the electric compressor in the fourth mode is less than the rotation speed of the electric compressor in the first mode.
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| CN113879072B (en) | 2024-03-22 |
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