CN114590102B - Control method and device for automobile air conditioner - Google Patents
Control method and device for automobile air conditioner Download PDFInfo
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- CN114590102B CN114590102B CN202210144899.9A CN202210144899A CN114590102B CN 114590102 B CN114590102 B CN 114590102B CN 202210144899 A CN202210144899 A CN 202210144899A CN 114590102 B CN114590102 B CN 114590102B
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- 239000003570 air Substances 0.000 claims description 164
- 230000001133 acceleration Effects 0.000 claims description 46
- 238000005057 refrigeration Methods 0.000 claims description 45
- 230000000630 rising effect Effects 0.000 claims description 42
- 239000012080 ambient air Substances 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 17
- 238000004590 computer program Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 10
- 239000000725 suspension Substances 0.000 description 9
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- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011217 control strategy 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
- B60H1/00642—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
- B60H1/00764—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 the input being a vehicle driving condition, e.g. speed
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
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Abstract
The invention discloses a control method and a device of an automobile air conditioner, wherein the control method comprises the following steps: acquiring the current power working condition of the vehicle; determining whether the current power working condition is a target working condition according to the parameter information of the current power working condition, wherein the target working condition is a working condition that the engine load of the vehicle is larger than the normal load; if yes, controlling the automobile air conditioner of the vehicle to stop refrigerating, and recovering refrigerating after the preset condition is met. According to the control method, when the current power working condition of the vehicle is determined to be the target working condition that the load of the engine of the vehicle is larger than the normal load, the air conditioner of the vehicle is controlled to stop refrigerating so as to drive more power to drive the vehicle to run, the power performance requirement of the vehicle is met, refrigerating is resumed after the preset condition is met, the discomfort of temperature rise caused by the air conditioner of the vehicle after the air conditioner is stopped refrigerating can be effectively relieved, the comfort of the whole vehicle is improved, and the power performance and the comfort of the vehicle are further considered.
Description
Technical Field
The application relates to the technical field of automobile air conditioner control, in particular to a control method and device of an automobile air conditioner.
Background
The automobile air conditioner of the existing fuel oil vehicle is used as a standard configuration, the torque (power) consumption of the existing fuel oil vehicle is usually borne by an engine of the vehicle, and the dynamic property of the whole vehicle is more obviously weakened in the hot weather due to the intervention of the load of the automobile air conditioner under the working condition of larger load. Some manufacturers ensure the dynamic performance by cutting off the control strategy of the air conditioner of the automobile, which is very easy to influence the temperature balance in the automobile, difficult to consider the dynamic performance and the comfort of the automobile and easy to cause complaints of after-market users.
Therefore, how to combine the dynamic performance and the comfort performance of the vehicle is a technical problem to be solved at present.
Disclosure of Invention
In view of the above technical problems, the invention provides a control method and a device for an automobile air conditioner, which take the dynamic property and the comfort property of a vehicle into consideration.
The embodiment of the invention provides the following scheme:
in a first aspect, an embodiment of the present invention provides a control method for an automotive air conditioner, including:
acquiring the current power working condition of the vehicle;
determining whether the current power working condition is a target working condition according to the parameter information of the current power working condition, wherein the target working condition is a working condition that the engine load of the vehicle is larger than the normal load;
if yes, controlling the automobile air conditioner of the vehicle to stop refrigerating, and recovering refrigerating after the preset condition is met.
In an optional embodiment, the determining, according to the parameter information of the current power condition, whether the current power condition is a target condition includes:
acquiring the parameter information of the current power working condition, wherein the parameter information comprises a current gear, a current accelerator opening and a current acceleration;
acquiring an accelerator opening threshold and an acceleration threshold according to the current gear;
judging whether the current accelerator opening is not smaller than the accelerator opening threshold value or not and whether the current acceleration is not smaller than the acceleration threshold value or not;
and if yes, determining the current power working condition as the target working condition.
In an alternative embodiment, the recovering refrigeration after meeting the preset condition includes:
acquiring the total pause time and the total rising temperature in the process of pausing refrigeration of the automobile air conditioner;
acquiring a preset pause time threshold and a first temperature rise threshold;
judging whether the total pause time is greater than the pause time threshold and/or whether the total rising temperature is greater than the first rising temperature threshold;
and if one of the judging results is yes, controlling the automobile air conditioner to recover refrigeration.
In an alternative embodiment, the pause time threshold is 3-5s and the first temperature rise threshold is 2-4 ℃. Preferably, the pause time threshold is 4s, and the first temperature rise threshold is 3 ℃.
In an alternative embodiment, the automotive air conditioner is a variable displacement air conditioner, and the recovering refrigeration after meeting the preset condition includes:
acquiring a total temperature rise and a preset second temperature rise threshold value in the process of suspending refrigeration of the automobile air conditioner;
judging whether the total rising temperature is greater than the second rising temperature threshold;
if yes, determining the target power of the automobile air conditioner according to the current temperature of the automobile, and controlling the automobile air conditioner to recover refrigeration according to the target power.
In an alternative embodiment, the determining the target power of the air conditioner according to the current temperature of the vehicle includes:
acquiring a power curve graph of the automobile air conditioner and the target temperature for recovering refrigeration;
and determining the target power in the power curve graph according to the current temperature and the target temperature.
In an alternative embodiment, before the controlling the vehicle air conditioner to suspend cooling, the method further includes:
acquiring the external ambient air pressure, the internal environment temperature and the current gear of the vehicle;
judging whether the temperature in the vehicle is not less than a temperature threshold in the vehicle;
if yes, controlling an automobile air conditioner of the vehicle to continuously refrigerate;
if not, controlling the automobile air conditioner to stop refrigerating according to the external ambient air pressure and the current gear.
In an alternative embodiment, the controlling the vehicle air conditioner to suspend cooling according to the external ambient air pressure and the current gear includes:
acquiring an air inlet pressure threshold value and a current accelerator opening of the engine;
judging whether the external ambient air pressure is not greater than the intake air pressure threshold value;
if yes, controlling the automobile air conditioner to stop refrigerating;
if not, controlling the automobile air conditioner to stop refrigerating when the current gear is larger than a gear threshold and the current accelerator opening is larger than a preset opening threshold.
In a second aspect, an embodiment of the present invention further provides a control device for an automotive air conditioner, including:
the first acquisition module is used for acquiring the current power working condition of the vehicle;
the determining module is used for determining whether the current power working condition is a target working condition according to the parameter information of the current power working condition, wherein the target working condition is a working condition that the engine load of the vehicle is larger than the normal load;
and the first control module is used for controlling the automobile air conditioner of the vehicle to stop refrigerating when the current power working condition is the target working condition and recovering the refrigerating after the preset condition is met.
In an alternative embodiment, the determining module includes:
the first acquisition sub-module is used for acquiring the parameter information of the current power working condition, wherein the parameter information comprises a current gear, a current accelerator opening and a current acceleration;
the first obtaining submodule is used for obtaining an accelerator opening threshold value and an acceleration threshold value according to the current gear;
the first judging submodule is used for judging whether the current accelerator opening is not smaller than the accelerator opening threshold value and whether the current acceleration is not smaller than the acceleration threshold value;
and the first determining submodule is used for determining the current power working condition as the target working condition when the current accelerator opening is not smaller than the accelerator opening threshold and the current acceleration is not smaller than the acceleration threshold.
In an alternative embodiment, the first control module includes:
the second acquisition submodule is used for acquiring the total pause duration and the total rising temperature in the process of pausing refrigeration of the automobile air conditioner;
the third acquisition sub-module is used for acquiring a preset pause time threshold and a first temperature rise threshold;
a second judging sub-module, configured to judge whether the total pause duration is greater than the pause time threshold, and/or whether the total rising temperature is greater than the first rising temperature threshold;
and the first control submodule is used for controlling the automobile air conditioner to recover refrigeration when one of the judging results is yes.
In an alternative embodiment, the vehicle air conditioner is a variable displacement air conditioner, and the first control module includes:
a fourth obtaining submodule, configured to obtain a total temperature rise and a preset second temperature rise threshold in a process of suspending refrigeration of the automotive air conditioner;
a third judging sub-module, configured to judge whether the total rising temperature is greater than the second rising temperature threshold;
and the second control submodule is used for determining the target power of the automobile air conditioner according to the current temperature of the vehicle when the total rising temperature is greater than the second rising temperature threshold value, and controlling the automobile air conditioner to recover refrigeration with the target power.
In an alternative embodiment, the second control sub-module includes:
the acquisition unit is used for acquiring a power curve graph of the automobile air conditioner and the target temperature for recovering refrigeration;
and the determining unit is used for determining the target power in the power curve graph according to the current temperature and the target temperature.
In an alternative embodiment, the control device further comprises:
the second acquisition module is used for acquiring the external ambient air pressure, the internal ambient temperature and the current gear of the vehicle;
the judging module is used for judging whether the environment temperature in the vehicle is not less than the temperature threshold value in the vehicle;
the second control module is used for controlling the vehicle air conditioner of the vehicle to continuously refrigerate when the temperature in the vehicle is not less than the temperature threshold value in the vehicle;
and the third control module is used for controlling the automobile air conditioner to stop refrigerating according to the external ambient air pressure and the current gear when the temperature in the automobile is smaller than the temperature threshold in the automobile.
In an alternative embodiment, the third control module includes:
a fifth acquisition sub-module, configured to acquire an intake air pressure threshold and a current accelerator opening of the engine;
a fourth judging sub-module, configured to judge whether the external ambient air pressure is not greater than the intake air pressure threshold;
the third control sub-module is used for controlling the automobile air conditioner to stop refrigerating when the external ambient air pressure is not greater than the inlet air pressure threshold value;
and the fourth control submodule is used for controlling the air conditioner of the automobile to stop refrigerating when the current gear is larger than the gear threshold and the current accelerator opening is larger than the preset opening threshold when the external ambient air pressure is larger than the air inlet air pressure threshold.
In a third aspect, embodiments of the present invention also provide an electronic device comprising a processor and a memory coupled to the processor, the memory storing instructions that, when executed by the processor, cause the electronic device to perform the steps of the method of any of the first aspects.
In a fourth aspect, embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, implements the steps of the method according to any of the first aspects.
Compared with the prior art, the control method and the device for the automobile air conditioner provided by the invention have the following advantages:
according to the invention, by acquiring the current power working condition of the vehicle, when the current power working condition is determined to be the target working condition that the load of the engine of the vehicle is larger than the normal load, the vehicle air conditioner of the vehicle is controlled to stop refrigerating, so that more power is used for driving the vehicle to run, the power performance requirement of the vehicle is met, and refrigerating is resumed after the preset condition is met, so that the discomfort of temperature rise caused by the suspension of the vehicle air conditioner can be effectively relieved, the comfort of the whole vehicle is improved, and the power performance and the comfort of the vehicle are further considered.
Drawings
In order to more clearly illustrate the embodiments of the present description or the technical solutions in the prior art, the drawings that are required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present description, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a control method of an automotive air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a connection structure of each control unit according to an embodiment of the present invention;
fig. 3 is a schematic step diagram of a control method of an automotive air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic diagram of another step of the control method of the air conditioner for an automobile according to the embodiment of the invention;
fig. 5 is a schematic structural diagram of a control device for an automotive air conditioner according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the embodiments of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a control method of an automotive air conditioner according to an embodiment of the present invention, including:
s11, acquiring the current power working condition of the vehicle.
Specifically, the power condition of the vehicle in the driving process can continuously change along with the driving road condition and control, for example, a steep slope or a hollow road section is larger in required engine power output compared with a flat road section, and the power condition can change along with the control of a driver. Thus, the current power output state of the vehicle can be known by acquiring the current power condition. And after the current power working condition is acquired, the step S12 is carried out.
S12, determining whether the current power working condition is a target working condition according to the parameter information of the current power working condition, wherein the target working condition is a working condition that the engine load of the vehicle is larger than the normal load.
Specifically, the parameter information may be a load factor of the vehicle, that is, a ratio of power output by the engine at the current rotation speed to maximum power that may be emitted by the engine at the current rotation speed, expressed as a percentage. From this parameter information it is known whether the engine of the vehicle is in an overload operating state, which indicates that there may be an insufficient power output of the vehicle engine. It should be noted that the target working condition may be a sudden acceleration working condition, where more power output is required for vehicle acceleration; of course, the vehicle may be driven on a steep slope. The target working condition can be defined according to the type and the displacement of the vehicle engine as a reference, and the working condition that the engine load is larger than the normal load can be determined as the target working condition.
In a specific embodiment, determining whether the current power condition is a target condition according to the parameter information of the current power condition includes:
acquiring parameter information of a current power working condition, wherein the parameter information comprises a current gear, a current accelerator opening and a current acceleration; acquiring an accelerator opening threshold and an acceleration threshold according to the current gear; judging whether the current accelerator opening is not less than an accelerator opening threshold value or not, and judging whether the current acceleration is not less than an acceleration threshold value or not; and if yes, determining the current power working condition as the target working condition.
Specifically, in the running process of the vehicle, corresponding relations exist among gears, accelerator opening and acceleration, for example, under the working conditions of rapid acceleration in forward gears D1, D2 and D3, different gears correspond to different accelerator opening, and a fitting relation exists among acceleration. Therefore, the accelerator opening threshold and the acceleration threshold of the target working condition can be correspondingly obtained according to the current gear, and in general, the higher the gear is, the smaller the corresponding accelerator opening threshold is. When the current accelerator opening is not smaller than the accelerator opening threshold value and the current acceleration is not smaller than the acceleration threshold value, the driver is informed that the driver adopts a larger accelerator opening to perform acceleration operation in the current gear, the current acceleration in the acceleration operation is not smaller than the acceleration threshold value, and the current power working condition is truly the target working condition when the rapid acceleration working condition is reached. After determining the current power condition, the process proceeds to step S13.
And S13, if yes, controlling the automobile air conditioner of the vehicle to stop refrigerating, and recovering the refrigerating after the preset condition is met.
Specifically, the vehicle is a target working condition, which indicates that the vehicle needs more power for driving the vehicle to accelerate, and the vehicle air conditioner is controlled to stop refrigerating so as to relieve the consumption of the power of the engine in the refrigerating process of the vehicle air conditioner for ensuring the output of the power. The preset condition can be determined according to the current power working condition of the vehicle, for example, an engine load threshold can be set, the engine load is larger than the normal load under the target working condition, after the automobile air conditioner pauses refrigeration, the engine load can be gradually reduced to be normal along with the continuous output of the engine power, the preset condition is determined to be met after the engine power is lower than the engine load threshold, and then the automobile air conditioner is controlled to resume refrigeration, so that the power performance and the comfort of the vehicle are considered.
It should be noted that, the suspension and resumption of cooling of the air conditioner of the automobile may be accomplished based on the control system of the automobile. Referring to fig. 2, a control system of a vehicle includes an air conditioner control unit, an engine control unit, a gearbox control unit, and an ESC (Electronic Stability control) unit, and the control units are communicatively connected to transmit interactive data. The engine control unit can acquire basic parameter information such as gear, accelerator opening, vehicle speed, ambient temperature, ambient pressure, in-vehicle temperature and the like sent by other control units, and after the engine control unit judges through internal logic, the engine control unit confirms whether the current power working condition is a target working condition or not so as to carry out subsequent instruction output such as air conditioner cutting-off, torque control and the like. The air conditioner control unit outputs parameters such as the temperature in the vehicle and the temperature outside the vehicle to the engine control unit through a self-contained temperature sensor; meanwhile, an air conditioner cut-off control instruction is received, and the suspension refrigeration of the automobile air conditioner is realized by adjusting the on-off state of the clutch of the air conditioner compressor. The clutch switch is opened, the compressor and the air conditioner do not work any more, namely, the refrigeration is stopped, and the temperature in the vehicle can be gradually increased; the clutch switch is closed, the compressor and the air conditioner recover the refrigeration, namely the refrigeration is recovered, and the temperature in the vehicle can be gradually reduced. And the gearbox control unit outputs gear parameter information and assists in confirming the rapid acceleration working condition. The ESC control unit outputs parameter information such as vehicle speed, acceleration and the like to the engine electronic control unit through a vehicle speed sensor.
In a specific embodiment, recovering refrigeration after a preset condition is met comprises:
acquiring total pause time and total rising temperature in the process of pausing refrigeration of an automobile air conditioner; acquiring a preset pause time threshold and a first temperature rise threshold; judging whether the total pause time is greater than a pause time threshold and/or whether the total rising temperature is greater than a first temperature rising threshold; and if one of the judging results is yes, controlling the automobile air conditioner to recover refrigeration.
Specifically, the total suspension time is the total time from the suspension of the cooling of the air conditioner to the current time, the total rising temperature is the rising temperature of the internal environment of the vehicle in the total suspension time, the suspension time threshold can be set to 3-5s, and the first rising temperature threshold can be set to 2-4 ℃. When the total pause time is not greater than the pause time threshold and/or the total rising temperature is not greater than the first rising temperature threshold, the rising temperature of the internal environment of the vehicle is smaller, and the pause refrigeration state of the automobile air conditioner is continuously maintained so as to enhance the output of power; when the total pause time is greater than the pause time threshold and/or the total rise in temperature is greater than the first rise in temperature threshold, it is indicated that the rise in temperature of the vehicle interior environment may have an impact on occupant comfort. Therefore, when one of the judgment results is yes, the automobile air conditioner is controlled to recover refrigeration in order to ensure the comfort of drivers and passengers. It should be further noted that, through multiple verifications of existing vehicles, the pause time threshold is preferably 4s, the first temperature rise threshold is preferably 3 ℃, and the dynamics and comfort of the vehicle are balanced appropriately.
Referring to fig. 3, during the running process of the vehicle in D/M gear (or referred to as forward gear), the actual accelerator opening and the actual longitudinal acceleration are obtained in real time, the actual accelerator opening is not less than the accelerator opening threshold, and when the actual longitudinal acceleration is not less than the acceleration threshold, the vehicle is determined to be in a sudden acceleration working condition, and is determined to be in a sudden acceleration working condition mark position 1, so that the vehicle air conditioner is cut off at the mark position 1, the clutch switch of the vehicle air conditioner compressor is opened, and the vehicle air conditioner is controlled to stop refrigerating. And comparing the actual temperature in the automobile with the initial temperature before cutting off, and if the temperature rise in the automobile is not greater than a first temperature rise threshold (delta T ℃), and the cutting-off time is not greater than a pause time threshold (N seconds), determining that the automobile air conditioner cuts off the no-power request.
In a specific embodiment, the automotive air conditioner is a variable displacement air conditioner, and resumes refrigeration after a preset condition is satisfied, including:
acquiring a total temperature rise and a preset second temperature rise threshold value in the process of suspending refrigeration of the automobile air conditioner; judging whether the total rising temperature is greater than a second rising temperature threshold; if yes, determining the target power of the automobile air conditioner according to the current temperature of the automobile, and controlling the automobile air conditioner to recover refrigeration with the target power.
Specifically, the variable displacement air conditioner can automatically adjust working displacement, reduce refrigerating capacity and power loss, and the second temperature rise threshold can be set to be 3 ℃. Similarly, referring to fig. 4, when the total rising temperature is not greater than the second rising temperature threshold, it is indicated that the rising of the internal environment temperature of the vehicle is smaller, and the suspension refrigeration state can be maintained; when the total rising temperature is greater than the second rising temperature threshold, the fact that the rising of the internal environment temperature of the vehicle possibly affects the comfort of drivers and passengers is indicated, the target power of the automobile air conditioner is determined according to the current temperature, and refrigeration is recovered. The target power can be a variable quantity, and can be determined according to experience of a technician or calibration tests, and the power required by refrigeration gradually decreases along with gradual decrease of the internal environment of the vehicle in the refrigeration process. Therefore, the refrigeration is restored through the mode, and the refrigeration power consumption can be reduced to the greatest extent while the comfort is met.
In a specific embodiment, determining the target power of the air conditioner of the automobile according to the current temperature of the vehicle comprises:
acquiring a power curve graph of an automobile air conditioner and recovering a refrigerating target temperature; and determining the target power in the power curve graph according to the current temperature and the target temperature.
Specifically, the target temperature can be the initial temperature when refrigerating is suspended, and of course, the target temperature can also be other temperature values which can meet the comfort of drivers and passengers, corresponding power graphs (or power maps) exist for variable displacement automobile air conditioners of different models, and the target power can be determined rapidly and accurately through the power graphs.
In practical applications, driving environments with different air pressures have an influence on the power performance of the vehicle, for example, in a high altitude area with smaller ambient air pressure, the vehicle is further under-powered due to the thin air, so that the influence of the factors on the comfort and the power performance of the vehicle needs to be balanced.
In an alternative embodiment, before controlling the vehicle air conditioner to suspend cooling, the method further comprises:
acquiring the external ambient air pressure, the internal ambient temperature and the current gear of the vehicle; judging whether the temperature in the vehicle is not less than the temperature threshold in the vehicle; if yes, controlling an automobile air conditioner of the vehicle to continuously refrigerate; if not, controlling the automobile air conditioner to stop refrigerating according to the external ambient air pressure and the current gear.
Specifically, the external ambient air pressure may be obtained from a vehicle based on an air pressure sensor on the vehicle, and the in-vehicle temperature threshold may be set based on an upper temperature limit required for occupant comfort. The environment temperature in the automobile is not less than the temperature threshold in the automobile, which indicates that the current temperature in the automobile has influence on the comfort of drivers and passengers, the comfort requirement needs to be met preferentially, the automobile air conditioner is forbidden to be used for suspending refrigeration, and the automobile air conditioner is controlled to continuously refrigerate until the environment temperature in the automobile is less than the temperature threshold in the automobile; the temperature of the environment in the automobile is smaller than the temperature threshold value in the automobile, so that the current temperature in the automobile has no influence on the comfort of drivers and passengers, the power performance requirement is preferentially met, and after the current working condition is determined to be the target working condition, the automobile air conditioner is controlled to stop refrigerating by integrating the factors of the external environment air pressure and the current gear.
In an alternative embodiment, controlling the vehicle air conditioner to suspend cooling according to the external ambient air pressure and the current gear comprises:
acquiring an air inlet pressure threshold value and a current accelerator opening of an engine; judging whether the external ambient air pressure is not more than an air inlet air pressure threshold value; if yes, controlling the automobile air conditioner to stop refrigerating; if not, controlling the air conditioner of the automobile to stop refrigerating when the current gear is larger than the gear threshold and the current accelerator opening is larger than the preset opening threshold.
Specifically, the intake air pressure threshold may be determined based on a basic intake air parameter of the engine intake type, such as a minimum value that is met by the turbocharged engine and naturally aspirated engine with normal intake air pressure. The temperature of the environment in the automobile is smaller than the temperature threshold value in the automobile, the air pressure of the external environment is not larger than the air pressure threshold value, and the condition that the temperature of the environment in the automobile meets the comfort requirement is indicated, but the power output is possibly insufficient due to the air pressure of the external environment, and the air conditioner of the automobile is controlled to stop refrigerating so as to use more power for driving the automobile. The gear threshold value may be determined based on the matching relationship between the gear and the vehicle speed, for example, in a six-speed transmission, normally the forward gears D1 and D2 are used for starting and running at a low speed, and the forward gear D3 and above are used for the conditions of overtaking and acceleration running, and thus, the gear threshold value may be set as the forward gear D2. When the ambient temperature in the vehicle is smaller than the temperature threshold in the vehicle and the external ambient air pressure is larger than the air inlet air pressure threshold, the condition that the external ambient air pressure meets the target working condition (such as rapid acceleration) is indicated, and when the current gear is larger than the gear threshold and the current accelerator opening is larger than the preset opening threshold, the air conditioner of the vehicle is controlled to stop refrigerating so as to use more power for driving the vehicle to accelerate; the current gear is not larger than the gear threshold value, so that the vehicle is in a low-speed state, and unnecessary suspension of refrigeration of an automobile air conditioner is avoided.
Based on the same inventive concept as the control method, the embodiment of the invention further provides a control device of an automobile air conditioner, referring to fig. 5, including:
a first obtaining module 501, configured to obtain a current power condition of a vehicle;
a determining module 502, configured to determine, according to the parameter information of the current power condition, whether the current power condition is a target condition, where the target condition is a condition that an engine load of the vehicle is greater than a normal load;
and the first control module 503 is configured to control the vehicle air conditioner of the vehicle to suspend cooling when the current power condition is the target condition, and resume cooling after a preset condition is satisfied.
In an alternative embodiment, the determining module includes:
the first acquisition sub-module is used for acquiring the parameter information of the current power working condition, wherein the parameter information comprises a current gear, a current accelerator opening and a current acceleration;
the first obtaining submodule is used for obtaining an accelerator opening threshold value and an acceleration threshold value according to the current gear;
the first judging submodule is used for judging whether the current accelerator opening is not smaller than the accelerator opening threshold value and whether the current acceleration is not smaller than the acceleration threshold value;
and the first determining submodule is used for determining the current power working condition as the target working condition when the current accelerator opening is not smaller than the accelerator opening threshold and the current acceleration is not smaller than the acceleration threshold.
In an alternative embodiment, the first control module includes:
the second acquisition submodule is used for acquiring the total pause duration and the total rising temperature in the process of pausing refrigeration of the automobile air conditioner;
the third acquisition sub-module is used for acquiring a preset pause time threshold and a first temperature rise threshold;
a second judging sub-module, configured to judge whether the total pause duration is greater than the pause time threshold, and/or whether the total rising temperature is greater than the first rising temperature threshold;
and the first control submodule is used for controlling the automobile air conditioner to recover refrigeration when one of the judging results is yes.
In an alternative embodiment, the vehicle air conditioner is a variable displacement air conditioner, and the first control module includes:
a fourth obtaining submodule, configured to obtain a total temperature rise and a preset second temperature rise threshold in a process of suspending refrigeration of the automotive air conditioner;
a third judging sub-module, configured to judge whether the total rising temperature is greater than the second rising temperature threshold;
and the second control submodule is used for determining the target power of the automobile air conditioner according to the current temperature of the vehicle when the total rising temperature is greater than the second rising temperature threshold value, and controlling the automobile air conditioner to recover refrigeration with the target power.
In an alternative embodiment, the second control sub-module includes:
the acquisition unit is used for acquiring a power curve graph of the automobile air conditioner and the target temperature for recovering refrigeration;
and the determining unit is used for determining the target power in the power curve graph according to the current temperature and the target temperature.
In an alternative embodiment, the control device further comprises:
the second acquisition module is used for acquiring the external ambient air pressure, the internal ambient temperature and the current gear of the vehicle;
the judging module is used for judging whether the environment temperature in the vehicle is not less than the temperature threshold value in the vehicle;
the second control module is used for controlling the vehicle air conditioner of the vehicle to continuously refrigerate when the temperature in the vehicle is not less than the temperature threshold value in the vehicle;
and the third control module is used for controlling the automobile air conditioner to stop refrigerating according to the external ambient air pressure and the current gear when the temperature in the automobile is smaller than the temperature threshold in the automobile.
In an alternative embodiment, the third control module includes:
a fifth acquisition sub-module, configured to acquire an intake air pressure threshold and a current accelerator opening of the engine;
a fourth judging sub-module, configured to judge whether the external ambient air pressure is not greater than the intake air pressure threshold;
the third control sub-module is used for controlling the automobile air conditioner to stop refrigerating when the external ambient air pressure is not greater than the inlet air pressure threshold value;
and the fourth control submodule is used for controlling the air conditioner of the automobile to stop refrigerating when the current gear is larger than the gear threshold and the current accelerator opening is larger than the preset opening threshold when the external ambient air pressure is larger than the air inlet air pressure threshold.
Based on the same inventive concept as the control method, an embodiment of the invention further provides an electronic device comprising a processor and a memory coupled to the processor, the memory storing instructions which, when executed by the processor, cause the electronic device to perform the steps of any one of the control methods.
Based on the same inventive concept as the control method, the embodiments of the present invention also provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of any one of the control methods.
The technical scheme provided by the embodiment of the invention has at least the following technical effects or advantages:
by acquiring the current power working condition of the vehicle, when the current power working condition is determined to be the target working condition that the load of the engine of the vehicle is larger than the normal load, the air conditioner of the vehicle is controlled to stop refrigerating so as to drive more power to drive the vehicle to run, the power requirement of the vehicle is met, refrigerating is resumed after the preset condition is met, the discomfort of temperature rise brought by the air conditioner after the air conditioner is stopped refrigerating can be effectively relieved, the comfort of the whole vehicle is improved, and the power and the comfort of the vehicle are further considered.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (modules, systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A control method of an automotive air conditioner, characterized by comprising:
acquiring the current power working condition of the vehicle;
determining whether the current power working condition is a target working condition according to the parameter information of the current power working condition, wherein the target working condition is a working condition that the engine load of the vehicle is larger than the normal load;
if yes, controlling an automobile air conditioner of the vehicle to stop refrigerating, and recovering the refrigerating after a preset condition is met;
the automobile air conditioner is a variable displacement air conditioner, and the automobile air conditioner resumes refrigeration after meeting preset conditions, and comprises:
acquiring a total temperature rise and a preset second temperature rise threshold value in the process of suspending refrigeration of the automobile air conditioner;
judging whether the total rising temperature is greater than the second rising temperature threshold;
if yes, determining the target power of the automobile air conditioner according to the current temperature of the automobile, and controlling the automobile air conditioner to recover refrigeration according to the target power.
2. The method for controlling an air conditioner of a vehicle according to claim 1, wherein the determining whether the current power condition is a target condition according to the parameter information of the current power condition includes:
acquiring the parameter information of the current power working condition, wherein the parameter information comprises a current gear, a current accelerator opening and a current acceleration;
acquiring an accelerator opening threshold and an acceleration threshold according to the current gear;
judging whether the current accelerator opening is not smaller than the accelerator opening threshold value or not and whether the current acceleration is not smaller than the acceleration threshold value or not;
and if yes, determining the current power working condition as the target working condition.
3. The control method of an automotive air conditioner according to claim 1, characterized in that the determining the target power of the automotive air conditioner according to the current temperature of the vehicle includes:
acquiring a power curve graph of the automobile air conditioner and the target temperature for recovering refrigeration;
and determining the target power in the power curve graph according to the current temperature and the target temperature.
4. The control method of an automotive air conditioner according to claim 1, characterized by further comprising, before the automotive air conditioner that controls the vehicle suspends cooling:
acquiring the external ambient air pressure, the internal environment temperature and the current gear of the vehicle;
judging whether the temperature in the vehicle is not less than a temperature threshold in the vehicle;
if yes, controlling an automobile air conditioner of the vehicle to continuously refrigerate;
if not, controlling the automobile air conditioner to stop refrigerating according to the external ambient air pressure and the current gear.
5. The control method of an automotive air conditioner according to claim 4, wherein said controlling the automotive air conditioner to suspend cooling according to the external ambient air pressure and the current gear comprises:
acquiring an air inlet pressure threshold value and a current accelerator opening of the engine;
judging whether the external ambient air pressure is not greater than the intake air pressure threshold value;
if yes, controlling the automobile air conditioner to stop refrigerating;
if not, controlling the automobile air conditioner to stop refrigerating when the current gear is larger than a gear threshold and the current accelerator opening is larger than a preset opening threshold.
6. A control device of an automotive air conditioner, characterized by comprising:
the first acquisition module is used for acquiring the current power working condition of the vehicle;
the determining module is used for determining whether the current power working condition is a target working condition according to the parameter information of the current power working condition, wherein the target working condition is a working condition that the engine load of the vehicle is larger than the normal load;
the first control module is used for controlling the automobile air conditioner of the vehicle to stop refrigerating when the current power working condition is a target working condition and recovering refrigerating after the preset condition is met;
the vehicle air conditioner is variable displacement air conditioner, a first control module includes:
a fourth obtaining submodule, configured to obtain a total temperature rise and a preset second temperature rise threshold in a process of suspending refrigeration of the automotive air conditioner;
a third judging sub-module, configured to judge whether the total rising temperature is greater than the second rising temperature threshold;
and the second control submodule is used for determining the target power of the automobile air conditioner according to the current temperature of the vehicle when the total rising temperature is greater than the second rising temperature threshold value, and controlling the automobile air conditioner to recover refrigeration with the target power.
7. An electronic device comprising a processor and a memory coupled to the processor, the memory storing instructions that, when executed by the processor, cause the electronic device to perform the steps of the method of any of claims 1-5.
8. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the method according to any one of claims 1-5.
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| EP3725574A1 (en) * | 2017-12-15 | 2020-10-21 | Nio Nextev Limited | Method and system for controlling comfort of in-vehicle environment, and vehicle, controller and storage medium |
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