CN110341427B - Control method of parking air conditioner - Google Patents

Control method of parking air conditioner Download PDF

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Publication number
CN110341427B
CN110341427B CN201910695588.XA CN201910695588A CN110341427B CN 110341427 B CN110341427 B CN 110341427B CN 201910695588 A CN201910695588 A CN 201910695588A CN 110341427 B CN110341427 B CN 110341427B
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compressor
air conditioner
parking air
inner fan
control method
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CN110341427A (en
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陆晨
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Qingdao Highly Electric Co ltd
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Qingdao Highly Electric Co ltd
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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
    • B60H1/00371—Air-conditioning arrangements specially adapted for particular vehicles for vehicles carrying large numbers of passengers, e.g. buses
    • 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
    • B60H1/00378—Air-conditioning arrangements specially adapted for particular vehicles for tractor or load vehicle cabins
    • 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
    • B60H1/00421—Driving arrangements for parts of a vehicle air-conditioning
    • B60H1/00428—Driving arrangements for parts of a vehicle air-conditioning electric
    • 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
    • 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
    • B60H1/00807—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 specific way of measuring or calculating an air or coolant temperature
    • 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
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
    • 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
    • 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
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention relates to the technical field of parking air conditioners, in particular to a control method of a parking air conditioner. The invention aims to solve the problem that the existing parking air conditioner is unreasonable in operation mode. To this end, the control method of the parking air conditioner of the present invention includes: detecting the output voltage U and the outdoor ambient temperature T of the batteryao(ii) a Comparing outdoor ambient temperature TaoThe temperature is equal to the preset temperature T; comparing the output voltage U with the rated operation voltage U of the compressornThe size of (d); determining the operation frequency f of the compressor and the operation rotating speed r of the inner fan based on the comparison result; and controlling the compressor and the inner fan to operate according to the operating frequency f and the operating rotating speed r respectively. Through the control mode, the control method of the parking air conditioner can reasonably adjust the operation mode of the parking air conditioner based on the outdoor environment temperature and the voltage of the storage battery, and controls the transportation cost of the vehicle.

Description

Control method of parking air conditioner
Technical Field
The invention relates to the technical field of parking air conditioners, in particular to a control method of a parking air conditioner.
Background
Along with the development of the transportation industry, the parking air conditioner is installed on a transport truck, a motor home, a bus and the like, and compared with the traditional automobile air conditioner, the parking air conditioner is not required to be started by a vehicle engine but is directly driven by a vehicle-mounted storage battery, so that the parking air conditioner can be operated in an automobile flameout state, and is an air conditioner which is more energy-saving and environment-friendly.
However, the number of times of charging and discharging the battery is limited, and the battery needs to be charged with extra fuel during driving, and if the parking air conditioner is frequently used, not only the service life of the battery is affected, but also the transportation cost is increased due to the consumption of the fuel. Therefore, how to control the parking air conditioner to operate more reasonably is very important to save transportation cost.
Accordingly, there is a need in the art for a new control method of a parking air conditioner to solve the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the existing parking air conditioner has an unreasonable operation mode, the invention provides a control method of a parking air conditioner, wherein the parking air conditioner is installed on a vehicle, the vehicle is provided with a storage battery, the parking air conditioner comprises a compressor and an inner fan, and the storage battery is simultaneously connected with the compressor and the inner fan so as to supply power to the compressor and the inner fan; the control method comprises the following steps:
detecting the output voltage U and the outdoor ambient temperature T of the batteryao；
Comparing the outdoor ambient temperature TaoThe temperature is equal to the preset temperature T;
comparing the output voltage U with a rated operation voltage U of the compressornThe size of (d);
determining an operating frequency f of the compressor and an operating speed r of the inner fan based on the comparison result;
and controlling the compressor and the inner fan to operate according to the operating frequency f and the operating rotating speed r respectively.
In a preferred embodiment of the control method of the parking air conditioner, the step of determining the operating frequency f of the compressor and the operating speed r of the inner fan based on the comparison result further includes:
when T isaoMore than or equal to T and U more than or equal to UnDetermining the operating frequency f as a reference frequency feThe running speed r is a reference speed re；
Wherein the reference frequency feAnd the reference rotation speed reBased on the outdoor ambient temperature.
In a preferred embodiment of the control method of the parking air conditioner, the step of determining the operating frequency f of the compressor and the operating speed r of the inner fan based on the comparison result further includes:
when T isaoNot less than T and axUn≤U＜UnWhen determining the operating frequency f ═ a × feThe running speed r is re/a；
Wherein a is less than 1.
In a preferred embodiment of the control method of the parking air conditioner, the step of determining the operating frequency f of the compressor and the operating speed r of the inner fan based on the comparison result further includes:
when T isaoMore than or equal to T and U is less than a multiplied by UnWhen determining the operating frequency f ═ fminThe running speed r is rmax；
Wherein f isminIs the minimum operating frequency of the compressor, rmaxThe maximum rotating speed of the inner fan.
In a preferred embodiment of the control method of the parking air conditioner, the step of determining the operating frequency f of the compressor and the operating speed r of the inner fan based on the comparison result further includes:
when T isaoLess than T and U is more than or equal to UnWhen determining the operating frequency f ═ T (T)ao/T)×feThe running rotating speed r is re;
wherein f iseIs the reference frequency of the compressor, reFor the reference rotation speed of the inner fan, the reference frequency feAnd the reference rotation speed reBased on the outdoor ambient temperature.
In a preferred embodiment of the control method of the parking air conditioner, the step of determining the operating frequency f of the compressor and the operating speed r of the inner fan based on the comparison result further includes:
when T isao< T and a × Un≤U＜UnDetermining the operating frequency f ═ a × (T)aoT) × fe, the operating speed r ═ re/(Tao/T)；
Wherein a is less than 1.
In a preferred embodiment of the control method of the parking air conditioner, the step of determining the operating frequency f of the compressor and the operating speed r of the inner fan based on the comparison result further includes:
when T isao< T and U < a × UnWhen determining the operating frequency f ═ fminThe running speed r is rmax；
Wherein f isminIs the minimum operating frequency of the compressor, rmaxThe maximum rotating speed of the inner fan.
In a preferable aspect of the control method of the parking air conditioner, the control method further includes:
when the compressor is at the minimum operating frequency fminDetecting the output voltage U' of the storage battery during operation;
judging the output voltage U' and the voltage U required by the vehicle ignitionstThe size of (a);
and selectively controlling the vehicle to send out an under-voltage alarm signal based on the comparison result.
In a preferred embodiment of the control method of the parking air conditioner, the step of "selectively issuing the warning signal based on the comparison result" further includes:
when U' < UstAnd controlling the vehicle to send out an under-voltage alarm signal.
In a preferred embodiment of the control method of the parking air conditioner, after the step of "controlling the vehicle to emit the under-voltage alarm signal", the control method further includes:
counting the duration of the under-voltage alarm signal;
and when the duration time is greater than the preset time, controlling the parking air conditioner to stop running.
As can be understood by those skilled in the art, in the preferred technical scheme of the invention, the parking air conditioner is installed on a vehicle, the vehicle is provided with a storage battery, the parking air conditioner comprises a compressor and an inner fan, and the storage battery is simultaneously connected with the compressor and the inner fan so as to supply power to the compressor and the inner fan; the control method comprises the following steps: detecting the output voltage U and the outdoor ambient temperature T of the batteryao(ii) a Comparing outdoor ambient temperature TaoThe temperature is equal to the preset temperature T; comparing the output voltage U with the rated operation voltage U of the compressornThe size of (d); determining the operation frequency f of the compressor and the operation rotating speed r of the inner fan based on the comparison result; and controlling the compressor and the inner fan to operate according to the operating frequency f and the operating rotating speed r respectively.
Through the control mode, the control method of the parking air conditioner can reasonably adjust the operation mode of the parking air conditioner based on the outdoor environment temperature and the voltage of the storage battery, and controls the transportation cost of the vehicle. Particularly, the operating frequency of the parking air conditioner and the operating rotating speed of the inner fan are determined based on the combined comparison result of the outdoor environment temperature, the preset temperature and the output voltage of the storage battery and the rated operating voltage of the compressor.
Drawings
The control method of the parking air conditioner of the present invention will be described below with reference to the accompanying drawings in conjunction with a delivery truck. In the drawings:
fig. 1 is a flowchart of a control method of a parking air conditioner of the present invention;
FIG. 2 is a system diagram of a delivery truck of the present invention;
fig. 3 is a logic diagram of a control method of a parking air conditioner of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the present embodiment is described in connection with a delivery truck, this is not intended to limit the application scenario of the present application, and a person skilled in the art may apply the control method of the present application to other vehicles as long as the vehicle has a parking air conditioner without departing from the principles of the present invention. For example, the control method of the present application may also be applied to a motor home or a bus.
First, a control method of a parking air conditioner of the present invention will be described with reference to fig. 1. Fig. 1 is a flowchart of a control method of a parking air conditioner according to the present invention.
In order to solve the problem that an existing parking air conditioner is unreasonable in operation mode, the application provides a control method of the parking air conditioner, wherein the parking air conditioner comprises an outdoor unit and an indoor unit, a compressor is arranged in the outdoor unit, an inner fan is arranged in the indoor unit, the parking air conditioner is installed on a transport truck, a storage battery is configured on the transport truck, and the storage battery is connected with the compressor and the inner fan simultaneously so as to supply power to the compressor and the inner fan. As shown in fig. 1, the control method of the parking air conditioner includes:
s100, detecting output voltage U and outdoor environment temperature T of storage batteryao(ii) a For example, the outdoor ambient temperature T is obtained by a temperature sensor provided in the outdoor unitaoThe output voltage U of the storage battery is detected by arranging a voltage detection component such as a voltage sensor.
S200, comparing the outdoor environment temperature TaoThe temperature is equal to the preset temperature T; for example, the preset temperature is 28 ℃, and the outdoor environment temperature T is obtainedaoThen, the outdoor environment temperature T is measuredaoComparing the current outdoor environment temperature with the preset temperature T equal to 28 ℃, and obtaining the current outdoor environment temperature; such as comparing the magnitudes of the two by calculating whether the difference is greater than 0 or comparing the magnitudes of the two by calculating whether the ratio is greater than 1.
S300, comparing the output voltage U with the rated operation voltage U of the compressornThe size of (d); for example, after the output voltage U of the storage battery is obtained, the magnitude of the difference between the two is calculated to determine whether the current electric quantity of the storage battery is sufficient or not, and whether the ratio of the two is greater than 1 or not is calculated.
S400, determining the running frequency f of the compressor and the running rotating speed r of the inner fan based on the comparison result; for example, at outdoor ambient temperature TaoMore than 28 ℃, and the voltage U of the storage battery is more than UnAnd the operation frequency f of the compressor and the operation speed r of the inner fan can be properly increased to meet the current operation environment and achieve the purpose of quickly cooling the cab.
S500, controlling the compressor and the inner fan to operate according to the operation frequency f and the operation rotating speed r respectively; for example, after determining the operating frequency f and the operating speed r, the controller controls the parking air conditioner to operate according to the operating parameters.
In the present embodiment, the controller may be an existing controller of the vehicle, an existing controller of the parking air conditioner, a controller specially configured to execute the method of the present invention, or a functional module or functional unit of a general vehicle controller. For example, when the vehicle is an electric vehicle, the control module of the present application may be a Vehicle Control Unit (VCU), and when the vehicle is a non-electric vehicle, the control module may be an Electronic Control Unit (ECU), and the like.
Through the control mode, the control method of the parking air conditioner can reasonably adjust the operation mode of the parking air conditioner based on the outdoor environment temperature and the voltage of the storage battery, and controls the transportation cost of the transport truck. Particularly, the operating frequency of the parking air conditioner and the operating rotating speed of the inner fan are determined based on the combined comparison result of the outdoor environment temperature, the preset temperature and the output voltage of the storage battery and the rated operating voltage of the compressor.
The present application will now be described in detail with reference to fig. 2 and 3, in connection with a preferred embodiment. Wherein fig. 2 is a system schematic of a transport truck of the present invention; fig. 3 is a logic diagram of a control method of a parking air conditioner of the present invention.
In one possible embodiment, as shown in fig. 2, the delivery truck is equipped with a battery, a lighter device and a generator, the battery being capable of being charged by the generator or an external charging base station. The storage battery is connected with the ignition device, so that the automobile engine is started by driving the ignition device to drive the generator to work. The storage battery is connected with a main control board (such as a vehicle control unit or an electronic control unit) of the vehicle, and the main control board controls the drive board to supply power to a compressor and an inner fan of the parking air conditioner, so that the parking air conditioner is started and operated. The storage battery is also provided with a voltage detection device, and the main control board detects the output voltage U of the storage battery through controlling the voltage detection device. The outside of the transportation truck is also provided with a temperature sensor, such as a vehicle roof or an air conditioner shell, and the temperature sensor is connected with the main control panel to receive the control of the main control panel to detect the outdoor environment temperature.
Referring to fig. 2 and 3, in one possible control process, the driver of the transport truck activates the parking air conditioner in a key-off state, and the main control panel controls the temperature sensor and the voltage detection device to respectively detect the outdoor ambient temperature TaoAnd the output voltage U of the accumulator, then the outdoor ambient temperature TaoComparing the output voltage U of the accumulator with the rated operating voltage U of the compressornAnd comparing and determining the running frequency of the compressor and the running speed of the inner fan based on the comparison result. The specific determination and control process is as follows:
1) first, T is determinedaoWhether or not T is satisfied, if T is greater than TaoWhen the temperature is more than or equal to T, the fact that the outdoor environment temperature is higher at the moment is proved, and the comfort degree in the cab can be guaranteed only when the compressor and the inner fan of the parking air conditioner need to operate under higher operation parameters. At this time, the output voltage U of the storage battery and the rated operation voltage U of the compressor are further judgednThe size of the storage battery is determined to determine whether the storage battery can support the compressor and the inner fan of the parking air conditioner to keep higher operation parameters, namely, U is judged to be more than or equal to UnWhether or not this is true.
2) When U is more than or equal to UnWhen the condition is met, the electric quantity of the storage battery is proved to be enough for the compressor to operate at a higher frequency, so that both the compressor and the inner fan can operate according to the reference parameters. Specifically, the operating frequency f of the compressor is controlled in accordance with a reference frequency feThe operation of the inner fan is carried out according to the reference rotating speed reThe operation is carried out to ensure the operation effect of the parking air conditioner and improve the user experience. Wherein the reference frequency feAnd a reference rotational speed reBased on the outdoor ambient temperature.
E.g. in one possible embodiment, the reference frequency feAnd a reference rotational speed reThe following formula can be used for calculation:
fe＝a1×Tao+b1 (1)
re＝a2×Tao+b2 (2)
in the formula (1), feIs the reference frequency of the compressor; a is1Is a coefficient; t isaoIs the outdoor ambient temperature; b1Is a constant. Wherein, a1And b1Fitting can be done based on experimental data. For example, a parking air conditioner is subjected to a plurality of operation experiments for different outdoor ambient temperatures. In multiple experiments, the operating parameters of the parking air conditioner are set so that the temperature and the humidity of the air in the cab reach a better level, and at the moment, the operating frequency of the compressor under each outdoor environment temperature is recorded respectively, so that the linear relation between the reference frequency and the outdoor environment temperature is established.
In the formula (2), reThe reference rotating speed of the inner fan is set; a is2Is a coefficient; t isaoIs the outdoor ambient temperature; b2Is a constant. Wherein, a2And b2And can also be obtained based on experimental data fitting, and the obtaining mode is similar to the formula (1), and is not described in detail herein.
Of course, the reference frequency/reference rotation speed may also be determined based on other relationships between the outdoor ambient temperature and the reference frequency/reference rotation speed, such as a fixed correspondence between the outdoor ambient temperature and the reference frequency/reference rotation speed. If a relation comparison table between the outdoor environment temperature and the reference frequency/the reference rotating speed is determined based on tests and stored in the parking air conditioner, the reference frequency/the reference rotating speed corresponding to the outdoor environment temperature can be determined by using the comparison table.
3) When U is more than or equal to UnIf the frequency is not satisfied, the electric quantity of the storage battery is proved to be insufficient to support the compressor to operate at the reference frequency, and the condition that U is more than or equal to a multiplied by U is further judged at the momentnWhere a < 1, e.g., a ═ 0.9, etc., the values may be determined experimentally or empirically. If U is greater than or equal to a multiplied by UnIt is established that the output voltage U of the battery is lower than the rated voltage U of the parking air conditionernBut not much smaller, the voltage value can still drive the parking air conditioner to operate. However, since the voltage is low at this time, the compressor is operatedAs the main power consuming components, it is necessary to operate according to a standard lower than a reference parameter. Specifically, the operating frequency f is a × f according to feThe operation of the internal fan is carried out according to the operation rotating speed of r ═ reAnd a, operating to adapt to the current condition that the voltage is lower, and keeping the comfort level in the cab as far as possible under the condition of ensuring that the influence on the operation effect of the parking air conditioner is small. Wherein the reference frequency feAnd a reference rotational speed reThe determination method is the same as the above embodiment, and is not described herein again.
4) If U is greater than or equal to a multiplied by UnIf this is not true, it is proved that the battery voltage is low and the compressor is not suitable for operation at the above-mentioned frequency. At this time, the compressor, which is a main energy consuming part, is controlled to have a minimum frequency fminOperating and controlling the fan in the non-main energy consumption part to rotate at the maximum speed rmaxThe operation to under the relatively poor condition of refrigeration effect, guarantee driver's experience through improving interior fan rotational speed.
5) If T isaoAnd if the temperature is not higher than T, the outdoor environment temperature is proved to be not very high, and the comfort level in the cab can be ensured without operating the compressor and the inner fan of the parking air conditioner under higher operating parameters. At this time, the output voltage U of the storage battery and the rated operation voltage U of the compressor are further judgednThe operating frequency of the compressor and the operating speed of the inner fan are further determined. Namely, judging that U is more than or equal to UnWhether or not this is true.
6) When U is more than or equal to UnWhen the air conditioner is in use, the electric quantity of the storage battery is proved to be enough for the compressor to run at normal frequency, and in addition, the outdoor environment temperature is not very high, so that the compressor can run in a frequency reduction mode on the basis of the reference frequency, the electric quantity of the storage battery is saved on the premise of ensuring the air conditioning effect, the influence of the inner fan on the electric quantity of the storage battery is small, and the compressor can run according to the reference parameters. Specifically, the control operation frequency f ═ T (T)ao/T)×feThe operation of the inner fan is carried out according to the reference rotating speed reAnd (5) operating. Wherein the reference frequency feAnd a reference rotational speed reThe determination based on the outdoor environment temperature is the same as the above embodiment, and is not described herein again.
7) When U is more than or equal to UnIf the state is not satisfied, the battery capacity is proved to be deficient, and then further judgment is made that U is more than or equal to a multiplied by UnWhere a < 1, e.g., a ═ 0.9, etc., the values may be determined experimentally or empirically. If U is greater than or equal to a multiplied by UnIt is established that the output voltage U of the battery is lower than the rated voltage U of the parking air conditionernBut not much smaller, the voltage value can still drive the parking air conditioner to operate. However, at this time, the voltage is low, and the outdoor environment temperature is not very high, so that the compressor can be used as a main power consumption component and can be operated according to a standard lower than a reference parameter, and the internal fan has small influence on the electric quantity of the storage battery, so that the operation rotating speed can be properly increased. Specifically, the operating frequency f is defined as f ═ a × (T)ao/T)×feThe operation of the internal fan is carried out according to the operation rotating speed of r ═ re/(Taoand/T) operation to adapt to the current condition that the voltage is lower, and under the condition of ensuring that the influence on the operation effect of the parking air conditioner is small, the comfort degree in the cab is kept as much as possible by improving the operation rotating speed of the inner fan. Wherein the reference frequency feAnd a reference rotational speed reThe determination method is the same as the above embodiment, and is not described herein again.
8) If U is greater than or equal to a multiplied by UnIf this is not true, it is proved that the battery voltage is low and the outdoor ambient temperature is not so high, so that the compressor is not suitable for operating at the above-mentioned frequency. At this time, the compressor, which is a main energy consuming part, is controlled to have a minimum frequency fminOperating and controlling the fan in the non-main energy consumption part to rotate at the maximum speed rmaxThe operation to under the relatively poor condition of refrigeration effect, guarantee driver's experience through improving interior fan rotational speed.
9) At minimum frequency f of compressorminOperation, inner fan with maximum speed rmaxDuring operation, the output voltage U' of the battery is continuously monitored and compared with the voltage U required for starting the vehicle to strike a firestThe size of (a); if U' < UstIt is proved that if the vehicle is started, the pressure is too low to ignite and start the vehicle, so the vehicle is controlled at the momentRelevant spare part send under-voltage alarm signal to remind the car owner to close the parking air conditioner before starting the vehicle, ensure that the vehicle starts normally. Wherein, the undervoltage alarm signal can be the flashing of pilot lamp, warning sound, text message or voice message etc..
10) After sending out the undervoltage alarm signal, counting the duration t of the undervoltage alarm signal, if the duration is greater than the preset time t1And at the moment, the power supply of the storage battery is forcibly cut off so as to ensure that the electric quantity of the storage battery can start the vehicle and prevent the electric quantity of the storage battery from being too low. Wherein the preset time t1The fixed value can be set manually or can be determined in real time based on the current output voltage, and the determination principle is to at least ensure that the residual capacity of the storage battery can start the vehicle. Such as t1May be set to 1min, etc.
It should be noted that the above preferred embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention. Without departing from the principles of the present invention, those skilled in the art can adjust the setting manner described above, so that the present invention can be applied to more specific application scenarios.
For example, although the foregoing embodiments describe the steps as being in the above sequential order, those skilled in the art will understand that, in order to achieve the effect of the present embodiments, the different steps need not be executed in such an order, and they may be executed simultaneously (in parallel) or in reverse order, and these simple variations are within the scope of the present invention. For example, although the above embodiment is described in conjunction with detecting the output voltage U of the battery and detecting the outdoor ambient temperature TaoThe description has been made but it is obvious that the acquisition of the two parameters may also be performed non-simultaneously, without departing from the principle of the invention. For example, outdoor ambient temperature T can also be detectedaoAnd compares the outdoor ambient temperature TaoAfter the preset temperature T is reached, the output voltage U of the storage battery is detected and the rated operation voltage U of the compressor is detectednPerform comparisons, etc.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (6)

1. The control method of the parking air conditioner is characterized in that the parking air conditioner is installed on a vehicle, the vehicle is provided with a storage battery, the parking air conditioner comprises a compressor and an inner fan, and the storage battery is simultaneously connected with the compressor and the inner fan so as to supply power to the compressor and the inner fan; the control method comprises the following steps:
detecting the output voltage U and the outdoor ambient temperature T of the batteryao；
Comparing the outdoor ambient temperature TaoThe temperature is equal to the preset temperature T;
comparing the output voltage U with a rated operation voltage U of the compressornThe size of (d);
determining an operating frequency f of the compressor and an operating speed r of the inner fan based on the comparison result;
controlling the compressor and the inner fan to operate according to the operating frequency f and the operating rotating speed r respectively;
the step of determining the operating frequency f of the compressor and the operating speed r of the inner fan based on the comparison result further includes:
when T isaoLess than T and U is more than or equal to UnWhen determining the operating frequency f ═ T (T)ao/T)×feThe running speed r is re ；
Wherein f iseIs the reference frequency of the compressor, reFor the reference rotation speed of the inner fan, the reference frequency feAnd the reference rotation speed reDetermining based on the outdoor ambient temperature;
the step of determining the operating frequency f of the compressor and the operating speed r of the inner fan based on the comparison result further includes:
when T isao< T and a × Un≤U＜UnDetermining the operating frequency f ═ a × (T)ao/T)×feThe running speed r is re/(Tao/T)；
Wherein a is less than 1;
the step of determining the operating frequency f of the compressor and the operating speed r of the inner fan based on the comparison result further includes:
when T isao< T and U < a × UnWhen determining the operating frequency f ═ fminThe running speed r is rmax；
Wherein f isminIs the minimum operating frequency of the compressor, rmaxThe maximum rotating speed of the inner fan.
2. The control method of a parking air conditioner according to claim 1, wherein the step of determining the operating frequency f of the compressor and the operating rotation speed r of the inner fan based on the comparison result further comprises:
when T isaoMore than or equal to T and U more than or equal to UnDetermining the operating frequency f as a reference frequency feThe running speed r is a reference speed re；
Wherein the reference frequency feAnd the reference rotation speed reBased on the outdoor ambient temperature.
3. The control method of a parking air conditioner according to claim 2, wherein the step of determining the operating frequency f of the compressor and the operating rotation speed r of the inner fan based on the comparison result further comprises:
when T isaoNot less than T and axUn≤U＜UnWhen determining the operating frequency f ═ a × feThe running speed r is re/a；
Wherein a is less than 1.
4. The control method of a parking air conditioner according to claim 1, characterized by further comprising:
when the compressor is at the minimum operating frequency fminDetecting the output voltage U' of the storage battery during operation;
judging the output voltage U' and the voltage U required by the vehicle ignitionstThe size of (a);
and selectively controlling the vehicle to send out an under-voltage alarm signal based on the comparison result.
5. The control method of a parking air conditioner according to claim 4, wherein the step of selectively issuing a warning signal based on the comparison result further comprises:
when U' < UstAnd controlling the vehicle to send out an under-voltage alarm signal.
6. The control method of a parking air conditioner according to claim 5, characterized in that after the step of controlling the vehicle to issue an under-voltage alarm signal, the control method further comprises:
counting the duration of the under-voltage alarm signal;
and when the duration time is greater than the preset time, controlling the parking air conditioner to stop running.
CN201910695588.XA 2019-07-30 2019-07-30 Control method of parking air conditioner Active CN110341427B (en)

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CN111645485A (en) * 2020-05-29 2020-09-11 奇瑞汽车股份有限公司 Automobile air conditioner starting control method and system
CN112032934A (en) * 2020-08-20 2020-12-04 Tcl空调器(中山)有限公司 Air conditioner energy saving method and system, storage medium and air conditioner
CN114083959B (en) * 2021-11-15 2024-05-24 广东美的制冷设备有限公司 Control method and device of parking air conditioner, parking air conditioner and storage medium

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