CN112248742B - Control method, device, equipment and medium for prolonging endurance time of vehicle-mounted air conditioner - Google Patents
Control method, device, equipment and medium for prolonging endurance time of vehicle-mounted air conditioner Download PDFInfo
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- CN112248742B CN112248742B CN202010997958.8A CN202010997958A CN112248742B CN 112248742 B CN112248742 B CN 112248742B CN 202010997958 A CN202010997958 A CN 202010997958A CN 112248742 B CN112248742 B CN 112248742B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000005494 condensation Effects 0.000 claims abstract description 34
- 238000009833 condensation Methods 0.000 claims abstract description 34
- 230000001276 controlling effect Effects 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 230000007423 decrease Effects 0.000 claims description 11
- 230000033228 biological regulation Effects 0.000 claims description 9
- 230000003247 decreasing effect Effects 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000004378 air conditioning Methods 0.000 description 15
- 238000005057 refrigeration Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000004904 shortening 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
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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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
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- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a control method for prolonging the endurance time of a vehicle-mounted air conditioner, which comprises the following steps of: detecting the current pressure value of the condensation end; detecting the pressure value of the next time period of the condensation end; calculating a pressure ratio delta P, wherein the pressure ratio delta P is the pressure value of the next time period of the condensation end/the current pressure value of the condensation end; and judging the load of the compressor according to the pressure ratio delta P, and regulating and controlling the running frequency of the compressor. According to the invention, the pressure ratio of the system is obtained, the difference value between the actually required cooling capacity and the actually output cooling capacity is judged through the pressure ratio, and the motion frequency of the compressor is regulated and controlled according to the difference value, so that the operation frequency of the compressor is suitable for the actually required cooling capacity, the electric quantity of the storage battery is prevented from being consumed too fast, and the endurance time of the storage battery is prolonged.
Description
Technical Field
The invention relates to the technical field of air conditioning systems, in particular to a control method for prolonging the endurance time of a vehicle-mounted air conditioning system powered by a storage battery.
Background
Generally, a vehicle is provided with an on-board air conditioning system to regulate the temperature in the vehicle cabin, and the on-board air conditioning system is usually powered by a storage battery. However, because the vehicle-mounted air conditioning system consumes a lot of energy, the storage battery is easy to consume the electric quantity in a short time, so that the comfort level of the user using the vehicle-mounted air conditioning system cannot be met, and the storage battery is easy to damage due to the electric quantity exhaustion of the storage battery, thereby shortening the service life of the storage battery.
In the prior art, in order to prolong the electric quantity consumption time of the storage battery and prolong the service life of the storage battery, the operation frequency of the air conditioning system under the electric quantity is obtained through real-time detection of the electric quantity of the storage battery, and the theoretical operation frequency of the air conditioning system under the set temperature at the moment is compared, so that the minimum operation frequency of the air conditioning system at the moment is determined, the electric quantity consumption control of the unit is realized, and the endurance time of the storage battery is prolonged. However, the battery capacity detection is limited by various conditions, such as: the detection of the electric quantity of the storage battery is not accurate due to the length of a power line, the material of an adapter and the like, so that the control method has large error influence factors.
Disclosure of Invention
The invention aims to overcome the problem of large error of the control method for prolonging the endurance time of the storage battery in the vehicle-mounted air conditioning system in the prior art, and provides the control method for prolonging the endurance time of the vehicle-mounted air conditioning system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a control method for prolonging the endurance time of a vehicle-mounted air conditioner comprises the following steps:
detecting the current pressure value of the condensation end;
detecting the pressure value of the next time period of the condensation end;
calculating a pressure ratio delta P, wherein the pressure ratio delta P is the pressure value of the next time period of the condensation end/the current pressure value of the condensation end;
and judging the load of the compressor according to the pressure ratio delta P, and regulating and controlling the running frequency of the compressor.
Further, the step of judging the load of the compressor according to the pressure ratio Δ P and regulating the operating frequency of the compressor comprises:
judging the relation between the pressure ratio delta P and a first preset value and a second preset value, wherein the first preset value is larger than the second preset value;
when the pressure ratio delta P is larger than the first preset value, controlling the compressor to operate according to the lowest operation frequency;
when the pressure ratio DeltaP is smaller than or equal to the first preset value and larger than the second preset value, reducing the running frequency of the compressor;
and when the pressure ratio delta P is smaller than or equal to the second preset value, controlling the compressor to operate according to the current operation frequency.
Further, when the pressure ratio Δ P is less than or equal to the first preset value and greater than the second preset value, the operating frequency of the compressor decreases in a stepwise manner as the pressure ratio Δ P decreases.
Further, when the pressure ratio Δ P is less than or equal to the first preset value and greater than the second preset value, comparing a magnitude relationship between the pressure ratio Δ P and a third preset value, where the third preset value is less than the first preset value and greater than the second preset value; if the pressure ratio delta P is larger than a third preset value, reducing the running frequency of the compressor by a first reduction value; if the pressure ratio delta P is smaller than a third preset value, the operating frequency of the compressor is reduced by a second reduction value, and the first reduction value is larger than the second reduction value.
Further, if the pressure ratio Δ P is smaller than a third preset value, comparing the pressure ratio Δ P with a fourth preset value, when the pressure ratio Δ P is larger than the fourth preset value, reducing the operating frequency of the compressor by a second reduction value, and when the pressure ratio Δ P is smaller than the fourth preset value, reducing the operating frequency of the compressor by a third reduction value, wherein the third reduction value is smaller than the second reduction value.
Further, the control method for prolonging the endurance time of the vehicle-mounted air conditioner further comprises the step of detecting the air inlet temperature of the condensation end, and when the air inlet temperature is larger than or equal to the preset temperature, judging the load of the compressor according to the pressure ratio delta P, and regulating and controlling the running frequency of the compressor.
The invention also provides a control device for prolonging the endurance time of the vehicle-mounted air conditioner, which comprises the following components:
a pressure detection unit: the device comprises a pressure sensor, a pressure sensor and a control circuit, wherein the pressure sensor is used for detecting the current pressure value of a condensation end and the pressure value of the next time period of the condensation end;
a calculation unit: the pressure ratio value delta P is used for calculating a pressure ratio value delta P, and the pressure ratio value delta P is a pressure value of the next time period of the condensation end/a current pressure value of the condensation end;
a regulation unit: and the controller is used for judging the load of the compressor according to the pressure ratio delta P and regulating and controlling the running frequency of the compressor.
The present invention also provides an electronic device, comprising: a memory storing executable program code; a processor coupled with the memory; the processor is used for executing the control method for prolonging the endurance time of the vehicle-mounted air conditioner by using the executable program codes stored in the memory.
The present invention also provides a computer-readable storage medium storing a computer program, wherein the computer program causes a computer to execute a control method of the present invention for extending a duration of a vehicle air conditioner.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the pressure ratio of the pressure value of the next time period of the condensation end to the current pressure value is obtained, the difference value between the actual required cooling capacity and the actual output cooling capacity is judged through the pressure ratio, and the motion frequency of the compressor is regulated and controlled according to the difference value, so that the operation frequency of the compressor is suitable for the actual required cooling capacity, the electric quantity of the storage battery is prevented from being consumed too fast, and the endurance time of the storage battery is prolonged.
Drawings
Fig. 1 is a schematic flow chart of a control method for prolonging the endurance time of a vehicle-mounted air conditioner in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a control device for prolonging the endurance time of a vehicle-mounted air conditioner according to embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to embodiment 3 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of the present invention.
It should be noted that the terms "first", "second", "third", "fourth", and the like in the description and the claims of the present invention are used for distinguishing different objects, and are not used for describing a specific order. The terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a control method for prolonging a endurance time of a vehicle air conditioner according to an embodiment of the present invention. As shown in fig. 1, the control method for prolonging the endurance time of the vehicle-mounted air conditioner comprises the following steps:
110. and detecting the current pressure value of the condensation end.
In the vehicle-mounted air conditioning system, when the vehicle-mounted air conditioning system operates in a refrigeration mode and performs indoor refrigeration, the condensation end is an outdoor heat exchanger. When the vehicle-mounted air conditioning system operates in a heating mode and heats indoors, the condensation end is an indoor heat exchanger. The pressure value can be detected and acquired by a pressure sensor.
120. And detecting the pressure value of the next time period of the condensation end.
The same pressure sensor may be used to detect the pressure value at the condensing end for the next time period.
130. The pressure ratio Δ P is calculated.
The pressure ratio deltap is the pressure value of the next time period of the condensation end/the current pressure value of the condensation end.
140. And judging the load of the compressor according to the pressure ratio delta P, and regulating and controlling the running frequency of the compressor. If the actual refrigeration demand is less than the actual refrigeration output, the pressure of the refrigeration system is too high (namely the pressure ratio delta P is too high), the operation frequency of the compressor is too high, and the electric quantity of the storage battery is too fast consumed. At this time, the operation frequency of the compressor is maintained and even decreased, so that the effect of prolonging the service time of the storage battery is achieved, and the safe operation of the air conditioning system is protected.
Illustratively, as a regulation and control method, the load of the compressor is judged according to the magnitude of the pressure ratio Δ P, and the specific step of regulating and controlling the operating frequency of the compressor includes:
judging the relation between the pressure ratio delta P and a first preset value and a second preset value, wherein the first preset value is larger than the second preset value;
when the pressure ratio delta P is larger than the first preset value, controlling the compressor to operate according to the lowest operation frequency;
when the pressure ratio DeltaP is smaller than or equal to the first preset value and larger than the second preset value, reducing the running frequency of the compressor;
and when the pressure ratio delta P is smaller than or equal to the second preset value, controlling the compressor to operate according to the current operation frequency.
Illustratively, as a regulation way, when the pressure ratio Δ P is less than or equal to the first preset value and greater than the second preset value, the operating frequency of the compressor is decreased in a stepwise manner as the pressure ratio Δ P is decreased.
Illustratively, as a regulation way, when the pressure ratio Δ P is smaller than or equal to the first preset value and larger than the second preset value, comparing the magnitude relation between the pressure ratio Δ P and a third preset value, wherein the third preset value is smaller than the first preset value and larger than the second preset value; if the pressure ratio delta P is larger than a third preset value, reducing the running frequency of the compressor by a first reduction value; if the pressure ratio delta P is smaller than a third preset value, the operating frequency of the compressor is reduced by a second reduction value, and the first reduction value is larger than the second reduction value.
Illustratively, as a regulation manner, if the pressure ratio Δ P is smaller than a third preset value, the pressure ratio Δ P is compared with a fourth preset value, when the pressure ratio Δ P is larger than the fourth preset value, the operating frequency of the compressor is decreased by a second decrease value, when the pressure ratio Δ P is smaller than the fourth preset value, the operating frequency of the compressor is decreased by a third decrease value, and the third decrease value is smaller than the second decrease value.
Illustratively, as a regulation and control mode, the control method for prolonging the endurance time of the vehicle-mounted air conditioner further comprises the steps of detecting the air inlet temperature of the condensation end, starting the regulation and control mode when the air inlet temperature is greater than or equal to a preset temperature, judging the load of the compressor according to the pressure ratio delta P, and regulating and controlling the operating frequency of the compressor.
Example 2
Referring to fig. 2, fig. 2 is a schematic structural diagram of a control device for prolonging the endurance time of a vehicle air conditioner according to an embodiment of the present invention. As shown in fig. 2, the control device for prolonging the endurance time of the vehicle-mounted air conditioner comprises:
the pressure detection unit 210: the device comprises a pressure sensor, a pressure sensor and a control circuit, wherein the pressure sensor is used for detecting the current pressure value of a condensation end and the pressure value of the next time period of the condensation end;
the calculation unit 220: the pressure ratio value delta P is used for calculating a pressure ratio value delta P, and the pressure ratio value delta P is a pressure value of the next time period of the condensation end/a current pressure value of the condensation end;
the regulation unit 230: and the controller is used for judging the load of the compressor according to the pressure ratio delta P and regulating and controlling the running frequency of the compressor.
Example 3
Referring to fig. 3, fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the disclosure. As shown in fig. 3, the electronic device may include:
a memory 310 storing executable program code;
a processor 320 coupled to the memory 310;
the processor 320 calls the executable program code stored in the memory 310 to execute part or all of the steps of the control method for prolonging the endurance time of the vehicle-mounted air conditioner in embodiment 1.
Example 4
The embodiment of the invention discloses a computer-readable storage medium which stores a computer program, wherein the computer program enables a computer to execute part or all of the steps of the control method for prolonging the endurance time of a vehicle-mounted air conditioner in any one of the embodiments 1.
The above description is only for the preferred embodiment of the present invention, but the present invention should not be limited to the embodiment and the disclosure of the drawings, and therefore, all equivalent or modifications that do not depart from the spirit of the present invention are intended to fall within the scope of the present invention.
Claims (9)
1. A control method for prolonging the endurance time of a vehicle-mounted air conditioner is characterized by comprising the following steps of:
detecting the current pressure value of the condensation end;
detecting the pressure value of the next time period of the condensation end;
calculating a pressure ratio delta P, wherein the pressure ratio delta P is the pressure value of the next time period of the condensation end/the current pressure value of the condensation end;
and judging the load of the compressor according to the pressure ratio delta P, and regulating and controlling the running frequency of the compressor.
2. The control method for prolonging the endurance time of the vehicle-mounted air conditioner according to claim 1, wherein the load of the compressor is judged according to the pressure ratio Δ P, and the step of regulating and controlling the operating frequency of the compressor comprises:
judging the relation between the pressure ratio delta P and a first preset value and a second preset value, wherein the first preset value is larger than the second preset value;
when the pressure ratio delta P is larger than the first preset value, controlling the compressor to operate according to the lowest operation frequency;
when the pressure ratio DeltaP is smaller than or equal to the first preset value and larger than the second preset value, reducing the running frequency of the compressor;
and when the pressure ratio delta P is smaller than or equal to the second preset value, controlling the compressor to operate according to the current operation frequency.
3. The control method for prolonging the endurance time of the vehicle air conditioner according to claim 2, wherein when the pressure ratio Δ Ρ is less than or equal to the first preset value and greater than the second preset value, the operating frequency of the compressor is decreased stepwise as the pressure ratio Δ Ρ decreases.
4. The control method for prolonging the endurance time of the vehicle-mounted air conditioner according to claim 3, wherein when the pressure ratio Δ P is smaller than or equal to the first preset value and larger than the second preset value, the pressure ratio Δ P is compared with a third preset value, and the third preset value is smaller than the first preset value and larger than the second preset value; if the pressure ratio delta P is larger than a third preset value, reducing the running frequency of the compressor by a first reduction value; if the pressure ratio delta P is smaller than a third preset value, the operating frequency of the compressor is reduced by a second reduction value, and the first reduction value is larger than the second reduction value.
5. The method as claimed in claim 4, wherein if the pressure ratio Δ P is less than a third predetermined value, the pressure ratio Δ P is compared with a fourth predetermined value, when the pressure ratio Δ P is greater than the fourth predetermined value, the operating frequency of the compressor is decreased by a second decrease value, when the pressure ratio Δ P is less than the fourth predetermined value, the operating frequency of the compressor is decreased by a third decrease value, and the third decrease value is less than the second decrease value.
6. The method as claimed in claim 1, further comprising detecting an intake air temperature at the condensation end, and when the intake air temperature is greater than or equal to a predetermined temperature, determining a load of the compressor according to the pressure ratio Δ P, and controlling an operating frequency of the compressor.
7. The utility model provides a control device of extension on-vehicle air conditioner duration which characterized in that includes:
a pressure detection unit: the device comprises a pressure sensor, a pressure sensor and a control circuit, wherein the pressure sensor is used for detecting the current pressure value of a condensation end and the pressure value of the next time period of the condensation end;
a calculation unit: the pressure ratio value delta P is used for calculating a pressure ratio value delta P, and the pressure ratio value delta P is a pressure value of the next time period of the condensation end/a current pressure value of the condensation end;
a regulation unit: and the controller is used for judging the load of the compressor according to the pressure ratio delta P and regulating and controlling the running frequency of the compressor.
8. An electronic device, comprising: a memory storing executable program code; a processor coupled with the memory; the processor is used for executing the control method for prolonging the endurance time of the vehicle-mounted air conditioner according to any one of claims 1 to 6 by using the executable program codes stored in the memory.
9. A computer-readable storage medium storing a computer program, wherein the computer program causes a computer to execute the control method for extending the duration of a vehicle air conditioner according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010997958.8A CN112248742B (en) | 2020-09-21 | 2020-09-21 | Control method, device, equipment and medium for prolonging endurance time of vehicle-mounted air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010997958.8A CN112248742B (en) | 2020-09-21 | 2020-09-21 | Control method, device, equipment and medium for prolonging endurance time of vehicle-mounted air conditioner |
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| CN112248742A CN112248742A (en) | 2021-01-22 |
| CN112248742B true CN112248742B (en) | 2022-02-22 |
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| US10486498B2 (en) * | 2016-02-23 | 2019-11-26 | Ford Global Technologies, Llc | Method and system for operating a heat pump of a vehicle |
| CN105757884A (en) * | 2016-03-02 | 2016-07-13 | 芜湖美智空调设备有限公司 | Control method of air conditioner |
| CN107576019B (en) * | 2017-10-12 | 2019-10-01 | 广东美的暖通设备有限公司 | Air-conditioning system and its pressure ratio control method and control device |
| CN111520894B (en) * | 2020-07-03 | 2020-11-27 | 宁波奥克斯电气股份有限公司 | Output control method and device for air conditioner compressor, air conditioner and storage medium |
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