CN111775654A - Control method and device of vehicle-mounted air conditioner and vehicle-mounted air conditioning system - Google Patents
Control method and device of vehicle-mounted air conditioner and vehicle-mounted air conditioning system Download PDFInfo
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- CN111775654A CN111775654A CN202010578431.1A CN202010578431A CN111775654A CN 111775654 A CN111775654 A CN 111775654A CN 202010578431 A CN202010578431 A CN 202010578431A CN 111775654 A CN111775654 A CN 111775654A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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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
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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Abstract
The invention provides a control method and a control device of a vehicle-mounted air conditioner and a vehicle-mounted air conditioner system, wherein the method comprises the following steps: acquiring the charging times of the storage battery after the engine is flamed out and the voltage of the storage battery; determining a voltage threshold value of the storage battery allowed to operate under voltage according to the charging times; and controlling the running state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the comparison result of the voltage and the voltage threshold. The embodiment of the invention can control the storage battery to avoid operating in a serious undervoltage state, charge the storage battery in time and prolong the service life of the storage battery.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and device of a vehicle-mounted air conditioner and a vehicle-mounted air conditioning system.
Background
With the social development and the upgrading of consumption, the requirement of consumers on the comfort of products is higher and higher. Taking a long-distance truck as an example, the long-distance truck is a main force army in the transportation industry, and in order to improve driving comfort in hot weather, a parking air conditioner is additionally arranged on the basis of the original vehicle air conditioner, and the parking air conditioner is generally driven by a storage battery of the truck. In the running process, an engine drives an original vehicle air conditioner to refrigerate; in the parking process, the cost for driving the original vehicle air conditioner at the idle speed is high, and the storage battery is used for driving the parking air conditioner to refrigerate.
When using battery drive parking air conditioner, the control mode of current parking air conditioner is long in the operation of considering heavily to prolong parking air conditioner, neglects whether the battery is in insufficient voltage state, and is in insufficient voltage state for a long time and can lead to charge capacity to reduce, shortens battery life greatly.
Disclosure of Invention
The invention solves the problem that the service life of a storage battery is short due to the control mode of the existing parking air conditioner.
In order to solve the above problems, the present invention provides a method for controlling a vehicle-mounted air conditioner, the vehicle-mounted air conditioner being powered by a storage battery, the method comprising: acquiring the charging times of the storage battery after the engine is shut down and the voltage of the storage battery; determining a voltage threshold value of the storage battery allowed to operate under voltage according to the charging times; the number of charges is positively correlated with the voltage threshold; and controlling the running state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the comparison result of the voltage and the voltage threshold.
The invention expresses the once undervoltage operation times of the storage battery through the charging times, and determines the corresponding voltage threshold value through the charging times, thereby being capable of controlling the storage battery to avoid operating in a serious undervoltage state, charging the storage battery in time and prolonging the service life of the storage battery.
Optionally, the number of charges is positively correlated with the voltage threshold.
The invention provides the relation between the charging times and the voltage threshold, and the larger the charging times, the higher the voltage threshold is correspondingly set, thereby avoiding operating in a serious undervoltage state.
Optionally, the controlling the operating state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the comparison result of the voltage and the voltage threshold includes: if the charging times are less than or equal to a first time threshold value, judging whether the voltage is less than a first voltage threshold value; if not, controlling the vehicle-mounted air conditioner to operate at a first refrigeration speed; if so, judging whether the voltage is greater than or equal to a second voltage threshold value, wherein the second voltage threshold value is smaller than the first voltage threshold value; if the voltage is greater than or equal to the second voltage threshold value, controlling the vehicle-mounted air conditioner to operate at a second refrigeration speed; the second cooling speed is less than the first cooling speed; and if the voltage is smaller than the second voltage threshold, controlling a power generation device to charge the storage battery.
The invention provides a feasible way for controlling the charging of the vehicle-mounted air conditioner or the storage battery, which can prevent the storage battery from operating in a serious undervoltage state and prolong the service life of the storage battery.
Optionally, the controlling the operating state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the comparison result of the voltage and the voltage threshold includes: if the charging times are larger than the first time threshold value, judging whether the voltage is smaller than a third voltage threshold value; the third voltage threshold is greater than the first voltage threshold; if not, controlling the vehicle-mounted air conditioner to operate at a third refrigeration speed; if so, judging whether the voltage is smaller than a fourth voltage threshold, wherein the fourth voltage threshold is smaller than the third voltage threshold, and the fourth voltage threshold is larger than the second voltage threshold; if the voltage is greater than or equal to the fourth voltage threshold value, controlling the vehicle-mounted air conditioner to operate at a fourth refrigeration speed; the fourth cooling speed is less than the third cooling speed; and if the voltage is smaller than the fourth voltage threshold, controlling a power generation device to charge the storage battery.
The invention provides another feasible way for controlling the charging of the vehicle-mounted air conditioner or the storage battery, which can prevent the storage battery from running in a serious undervoltage state again and prolong the service life of the storage battery.
Optionally, the method further comprises: and if the voltage is smaller than the fourth voltage threshold, controlling the vehicle-mounted air conditioner to stop.
When the storage battery operates in a severe undervoltage state for multiple times, the shutdown protection of the vehicle-mounted air conditioner can be executed, so that the storage battery is protected.
Optionally, the method further comprises: and if the voltage is smaller than the fourth voltage threshold, controlling the engine to charge the storage battery.
When the storage battery operates in a severe undervoltage state for many times, the invention can start the engine to charge and can reduce energy consumption.
Optionally, the method further comprises: and if a forced starting operation input by a user is received, clearing the charging times, and controlling the running state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the cleared charging times and the cleared voltage.
The invention also provides a forced starting mechanism, and the user experience is improved.
Optionally, the method further comprises: and if the voltage is smaller than the second voltage threshold or smaller than the fourth voltage threshold, outputting a storage battery under-voltage prompt.
The invention also provides a storage battery under-voltage prompting mechanism, which is convenient for users to know the use state of the storage battery.
Optionally, the method further comprises: and under the condition of controlling the vehicle-mounted air conditioner to stop, outputting a prompt that the charging and discharging times of the storage battery are excessive and/or outputting a vehicle-mounted air conditioner stop protection prompt.
The invention also provides a storage battery discharge frequency prompting and shutdown protection prompting mechanism, which is convenient for users to know the use state of the storage battery.
The invention provides a control device of a vehicle-mounted air conditioner, wherein the vehicle-mounted air conditioner is powered by a storage battery, and the method comprises the following steps: the acquisition module is used for acquiring the charging times of the storage battery after the engine is shut down and the voltage of the storage battery; the determining module is used for determining a voltage threshold value of the storage battery allowed to operate under voltage according to the charging times; and the control module is used for controlling the running state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the comparison result of the voltage and the voltage threshold.
The invention provides a vehicle-mounted air conditioning system which comprises a computer readable storage medium and a processor, wherein a computer program is stored in the computer readable storage medium, and when the computer program is read and run by the processor, the control method of the vehicle-mounted air conditioner is realized.
The invention provides a computer-readable storage medium which stores a computer program, and when the computer program is read and executed by a processor, the control method of the vehicle-mounted air conditioner is realized.
The control device of the vehicle-mounted air conditioner and the vehicle-mounted air conditioner system can achieve the same technical effect as the control method of the vehicle-mounted air conditioner.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic flowchart of a control method of an in-vehicle air conditioner in an embodiment of the present invention;
fig. 2 is a schematic flowchart of a control method of a parking air conditioner in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control device of an in-vehicle air conditioner according to an embodiment of the present invention.
Description of reference numerals:
301-an obtaining module; 302-a determination module; 303-control module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
If the accumulator is in a state of insufficient voltage for a long time, the polar plate will be slowly vulcanized, and the chronic vulcanization will make the charge capacity of the accumulator continuously reduced until the accumulator is started without force, thus greatly shortening the service life of the accumulator. In order to reduce active substances on a storage battery plate in time, reduce the chronic vulcanization of the plate, improve the charge capacity of the storage battery and prolong the service life of the storage battery, the storage battery on a vehicle needs to be periodically recharged.
Fig. 1 is a schematic flowchart of a control method of an in-vehicle air conditioner, which may be applied to an in-vehicle air conditioner or an in-vehicle air conditioning system, the in-vehicle air conditioner being powered by a battery, in an embodiment of the present invention, and the method includes:
s102, acquiring the charging times of the storage battery after the engine is flamed out and the voltage of the storage battery;
wherein, whether the engine stalls can be determined by detecting the start-stop state of the engine, for example, the start-stop state of the engine is periodically detected by a preset detection device. The period may be set to 30 s. When the starting and stopping state of the engine is detected to be a stopping state, the charging frequency of the storage battery after the flameout at this time is recorded to be zero, and one is added to the charging frequency every time the storage battery is charged.
After the engine is turned off, the voltage of the battery may be detected. Whether the storage battery is in an undervoltage state or not can be determined through the voltage of the storage battery, and the vehicle-mounted air conditioner and the power generation device are controlled based on the undervoltage state.
And S104, determining a voltage threshold value of the storage battery for allowing undervoltage operation according to the charging times.
It can be understood that, generally, in the case that the voltage of the storage battery is far lower than the rated voltage, the charging device is controlled to charge the storage battery, so that the number of times of charging the storage battery after the engine is turned off can represent the number of times of undervoltage of the storage battery. Alternatively, if the number of times of undervoltage of the battery is larger, the voltage threshold of the battery that can allow the undervoltage operation is higher, thereby extending the life of the battery.
The number of charging times is positively correlated with the voltage threshold, that is, the voltage threshold is higher as the number of charging times is larger, for example, the voltage threshold is increased every time the number of charging times is increased once, or the voltage threshold is increased every time the number of charging times is increased N times, which is not limited in this embodiment.
The power generation device charges the storage battery once every pair, which indicates that the vehicle-mounted air conditioner has been seriously undervoltage operated once, and the voltage of the storage battery is not allowed to be reduced to the same status when the vehicle-mounted air conditioner is operated next time, namely the voltage threshold value of the storage battery allowed to undervoltage operate is increased. If the voltage threshold value is set at the same low level, the storage battery can operate again in a serious undervoltage state, and the service life of the storage battery can be shortened by the operation mode according to the use characteristics of the storage battery. In order to prolong the service life of the storage battery, the vehicle-mounted air conditioner is not allowed to have overlong running time under a severe undervoltage state.
And S106, controlling the running state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the comparison result of the voltage and the voltage threshold.
If the voltage of the storage battery is lower than the voltage threshold, the vehicle-mounted air conditioner can be controlled to operate in a low power consumption mode, and the refrigeration speed is reduced, for example, the frequency of a compressor, the rotating speed of an internal machine, the rotating speed of an external machine or the power of other loads in the air conditioner is reduced; if the voltage of the storage battery is lower than the voltage threshold value, the power generation device can be controlled to charge the storage battery, and the power generation device can be an on-vehicle generator or an engine.
It should be noted here that a plurality of different voltage thresholds may be determined according to the number of times of charging, and the operating state of the in-vehicle air conditioner or the state of charge of the storage battery may be controlled based on the result of comparison between the voltage and the plurality of different voltage thresholds.
The control method of the vehicle-mounted air conditioner provided by the embodiment can acquire the charging times of the storage battery after the engine is shut down and the voltage of the storage battery, determine the voltage threshold value of the storage battery for allowing under-voltage operation according to the charging times, and then control the operation state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the comparison result of the voltage and the voltage threshold value. The charging times can indicate the times of the once undervoltage operation of the storage battery, and the corresponding voltage threshold value is determined through the charging times, so that the storage battery can be controlled to avoid the operation in a serious undervoltage state, the storage battery can be charged in time, and the service life of the storage battery is prolonged.
And the running state of the vehicle-mounted air conditioner can be controlled or the storage battery can be charged in time by combining the voltage threshold corresponding to the charging times and the voltage of the storage battery. As an embodiment, the S106 includes:
a1, if the number of times of charging is less than or equal to the first time threshold, determining whether the voltage is less than the first voltage threshold.
When the number of times of charging is smaller than a first time threshold value, which may be any value of 1 to 3, for example, the number of times of undervoltage operation of the battery is indicated to be small. In the following steps, the voltage of the battery may be periodically detected, and the detection period may take any value from 15min to 40min, for example.
And A2, if the voltage of the storage battery is greater than or equal to the first voltage threshold value, controlling the vehicle-mounted air conditioner to operate at a first cooling speed.
If the voltage of the storage battery is larger than or equal to the first voltage threshold value, the electric quantity of the storage battery is sufficient, the vehicle-mounted air conditioner can refrigerate at the fastest speed according to the temperature set by a user, and the operation efficiency of the air conditioner is improved. The vehicle-mounted air conditioner is controlled to run at a first refrigerating speed, specifically, the frequency of a compressor of the vehicle-mounted air conditioner can be controlled, and/or the rotating speed of a fan of the vehicle-mounted air conditioner can be controlled.
A3, if the voltage of the battery is less than the first voltage threshold, determining whether the voltage is greater than or equal to a second voltage threshold.
Wherein the second voltage threshold is smaller than the first voltage threshold. And if the voltage of the storage battery is smaller than the first voltage threshold, continuously judging whether the voltage is larger than or equal to a second voltage threshold.
And A4, if the voltage is greater than or equal to the second voltage threshold value, controlling the vehicle-mounted air conditioner to operate at a second cooling speed.
Wherein the second cooling speed is less than the first cooling speed. If the voltage of the storage battery is between the second voltage threshold and the first voltage threshold, the electric quantity of the storage battery is insufficient, the vehicle-mounted air conditioner reduces the refrigerating speed, so that the electric quantity consumption is reduced, and the running time of the vehicle-mounted air conditioner is prolonged. The vehicle-mounted air conditioner can reduce the refrigeration speed specifically by reducing the frequency of a compressor of the vehicle-mounted air conditioner and/or reducing the rotating speed of a fan of the vehicle-mounted air conditioner. Alternatively, the reduced frequency of the compressor may be obtained by multiplying the maximum frequency of the compressor by a voltage coefficient, which is a ratio of the current voltage of the battery to the rated voltage.
And A5, if the voltage is less than the second voltage threshold, controlling the power generation device to charge the storage battery.
If the voltage of the storage battery is smaller than the second voltage threshold value, the storage battery is indicated to be operated under voltage, and the storage battery needs to be charged in time. In order to remind the user, under the condition, the storage battery under-voltage prompt can be output at the same time.
When the number of times of charging is increased, the operating state of the vehicle-mounted air conditioner is controlled or the storage battery is charged in time based on a higher voltage threshold. In another embodiment, S106 includes:
b1, if the number of times of charging is greater than the first time threshold, determining whether the voltage is less than a third voltage threshold. Wherein the third voltage threshold is greater than the first voltage threshold. As the number of charges increases, the respective voltage thresholds also increase.
And B2, if the voltage is larger than or equal to the third voltage threshold value, controlling the vehicle-mounted air conditioner to operate at a third cooling speed.
B3, if the voltage is smaller than the third voltage threshold, determining whether the voltage is smaller than the fourth voltage threshold. Wherein the fourth voltage threshold is smaller than the third voltage threshold, and the fourth voltage threshold is larger than the second voltage threshold.
And B4, if the voltage is larger than or equal to the fourth voltage threshold value, controlling the vehicle-mounted air conditioner to operate at a fourth cooling speed. Wherein the fourth cooling speed is less than the third cooling speed. By reducing the refrigeration speed of the vehicle-mounted air conditioner, the electric quantity consumption can be reduced, and the running time of the vehicle-mounted air conditioner can be prolonged. As compared with the above-described embodiment, the third cooling speed may be equal to or less than the first cooling speed, and the fourth cooling speed may be equal to or less than the second cooling speed.
B5, if the voltage is less than the fourth voltage threshold, controlling the power generator to charge the battery. In order to remind the user, under the condition, the under-voltage prompt of the storage battery can be output at the same time, so that the user can know the use state of the storage battery conveniently.
In the present embodiment, if the number of times of charging is increased as compared with the number of times of charging in the above embodiment, accordingly: the third voltage threshold is greater than the first voltage threshold, the fourth voltage threshold is greater than the second voltage threshold, and the two voltage thresholds are increased, so that the storage battery can be prevented from operating in a serious undervoltage state again, and the service life of the storage battery is prolonged. It should be noted that, specific contents of this embodiment may refer to the specific contents in the foregoing embodiment, and are not described herein again.
In this embodiment, if the number of charging times continues to increase to reach the allowable number of charging and discharging times, the method may further include, in order to protect the storage battery, controlling the in-vehicle air conditioner shutdown protection: and if the voltage is less than the fourth voltage threshold, controlling the vehicle-mounted air conditioner to stop. In this case, the generator may be selected to charge the battery, rather than the generator. In order to remind a user, under the condition of controlling the shutdown of the vehicle-mounted air conditioner, a prompt that the charging and discharging times of the storage battery are excessive can be output, and/or a shutdown protection prompt of the vehicle-mounted air conditioner is output.
When the vehicle runs and the storage battery is charged through the generator, the only function of the generator is to convert the internal energy Q of the fuel oil into the electric energy P1, and the energy conversion rate is low; when the battery is charged by the engine, the energy is mainly used in that the internal energy Q of the fuel oil is converted into mechanical energy W of the truck, and the secondary purpose is to convert the electric energy P2. Since (P2+ W)/Q is more than P1/Q, the energy consumption can be reduced by charging the storage battery by using the generator as less as possible.
After the shutdown protection of the vehicle-mounted air conditioner, if a user still needs to start the vehicle-mounted air conditioner, the forced start can be carried out through a forced start key, and the method can further comprise the following steps: and if receiving a forced starting operation input by a user, resetting the charging times, and controlling the running state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the reset charging times and voltage. It can be understood that, after the user forcibly starts the vehicle-mounted air conditioner, the charging number may be cleared, and the above-described step of controlling the operating state of the vehicle-mounted air conditioner or the charging state of the storage battery may be re-executed.
According to the control method of the vehicle-mounted air conditioner, the charging of the storage battery, the running time of the vehicle-mounted air conditioner and the refrigerating speed of the power generation device are controlled by detecting the flameout state of the truck engine, the voltage of the storage battery and the charging times of the storage battery, and the running time of the vehicle-mounted air conditioner and the service life of the storage battery can be considered at the same time.
In the following embodiments, taking the parking air conditioner of a truck as an example, the voltage of the storage battery is expressed as a percentage of the current voltage to the rated voltage. Referring to a schematic flowchart of a control method of a parking air conditioner shown in fig. 2, including:
s201, detecting whether the engine is shut down.
The parking air conditioner can detect whether the engine is flamed out through the detection device. If not, wait for t0And then once more (t)0May take 30s) until an engine stall is detected. At this time, the parking air conditioner records that the number of times of charging the battery, that is, the number of times n of operation of the generator is 0.
S202, detecting the voltage U of the storage battery0。
S203, judging whether U is more than or equal to 70 percent0Less than or equal to 100 percent. If yes, executing S204; if not, go to S205.
And S204, controlling the compressor to run at the maximum frequency for 30 min.
When the voltage of the storage battery U0Meet the condition that U is more than or equal to 70 percent0When the temperature is less than or equal to 100%, the compressor can run at the maximum frequency, so that the refrigeration is carried out at the fastest speed according to the temperature set by a user, and the running efficiency of the air conditioner is improved. And detecting the voltage after the condition of operation for 30min is met, periodically detecting and judging, and repeatedly operating the logic.
S205, judging whether U is more than or equal to 50%0Less than or equal to 70 percent. If yes, go to S206; if not, go to S207.
And S206, controlling the compressor to run at the first frequency for 30 min.
When the voltage of the storage battery U0Satisfies the condition that the U is more than or equal to 50 percent0When the frequency is less than or equal to 70%, the compressor runs at a medium and low frequency, the voltage is detected after the condition of running for 30min is met, the logic is periodically detected and judged, and the logic is run in a reciprocating mode, wherein the first frequency f is a × fmaxWherein a ═ U0/U，U＝24V。
And S207, outputting an under-voltage prompt, starting the vehicle-mounted generator to charge the storage battery, and recording the running frequency n of the generator as n + 1.
The display panel of the internal unit of the parking air conditioner can display the under-voltage prompt and prompt a user by voice. And starting the vehicle-mounted generator, starting to charge the storage battery, and recording the running frequency n of the generator as n + 1.
S208, charging T of the vehicle-mounted generatornThe charging was stopped after 1.5 h.
S209, judging whether n is less than or equal to 3. If yes, executing S202; if not, go to S210.
S210, detecting the voltage U of the storage battery0。
S211, judging whether U is more than or equal to 80%0Less than or equal to 100 percent. If yes, go to step S212; if not, S213 is executed.
And S212, controlling the compressor to run at the maximum frequency for 30 min.
When the voltage of the storage battery U0Meet the condition that U is more than or equal to 80 percent0When the temperature is less than or equal to 100%, the compressor can run at the maximum frequency, so that the refrigeration is carried out at the fastest speed according to the temperature set by a user, and the running efficiency of the air conditioner is improved. And detecting the voltage after the condition of operation for 30min is met, periodically detecting and judging, and repeatedly operating the logic.
S213, judging whether U is more than or equal to 60 percent0Less than or equal to 80 percent. If yes, go to S214; if not, go to S215.
And S214, controlling the compressor to run at the second frequency for 30 min.
When the voltage of the storage battery U0Meet the condition that U is more than or equal to 60 percent0When the frequency is less than or equal to 80%, the compressor runs at a medium and low frequency, the voltage is detected again after the condition of running for 30min is met, the logic is periodically detected and judged, and the logic is run in a reciprocating mode, wherein the second frequency f is a × fmaxWherein a ═ U0/U，U＝24V。
And S215, outputting an under-voltage prompt, starting the vehicle-mounted generator to charge the storage battery, and recording the running frequency n of the generator as n + 1.
The display panel of the internal unit of the parking air conditioner can display the under-voltage prompt and prompt a user by voice. And starting the vehicle-mounted generator, starting to charge the storage battery, and recording the running frequency n of the generator as n + 1.
S216, judging whether n is less than or equal to 6. If yes, go to S210; if not, go to S217.
S217, detecting the voltage U of the storage battery0。
S218, judging whether U is more than or equal to 85%0Less than or equal to 100 percent. If yes, go to step S212; if not, S213 is executed.
And S219, controlling the compressor to run at the maximum frequency for 30 min.
When the voltage of the storage battery U0Meet the condition that U is more than or equal to 85 percent0When the temperature is less than or equal to 100%, the compressor can run at the maximum frequency, so that the refrigeration is carried out at the fastest speed according to the temperature set by a user, and the running efficiency of the air conditioner is improved. And detecting the voltage after the condition of operation for 30min is met, periodically detecting and judging, and repeatedly operating the logic.
S220, judging whether U is more than or equal to 65 percent0Less than or equal to 85 percent. If yes, go to S221; if not, go to step S222.
And S221, controlling the compressor to operate at the third frequency and the internal machine to operate at the first rotating speed for 30 min.
When the voltage of the storage battery U0Satisfies the condition that U is more than or equal to 65 percent0When the speed is less than or equal to 85 percent, the compressor runs at low frequency, and the internal machine runs at medium and low rotating speed. And detecting the voltage after the condition of operation for 30min is met, periodically detecting and judging, and repeatedly operating the logic. The third frequency f ═ fmin(ii) a The first rotation speed V ═ Vm×U0/U, wherein VmIs the maximum set rotation speed.
It should be noted that, the operation duration of the compressor and the detection period of the battery voltage in each step can be flexibly determined according to the actual use condition.
And S222, parking air conditioner stop protection is carried out, and an engine is started to charge a storage battery.
If not, U is more than or equal to 65 percent0Less than or equal to 85 percent, the generator stops working, the panel displays the shutdown protection mark to remind a user that the charging and discharging times are too much, and the parking air conditioner performs shutdown protection. The engine begins charging the battery until U0The engine stops operating 24V.
And S223, receiving a forced starting operation input by a user.
If the user still wants to start the air conditioner, the user can forcibly start the air conditioner through the forced start button, clear the charging frequency of the storage battery, and re-execute the step S202.
The embodiment provides a control method of a parking air conditioner, which is characterized in that whether an engine is started or not, the voltage percentage of a storage battery and the charging times of the storage battery are detected to control a vehicle-mounted generator to charge the storage battery, the operation time of the parking air conditioner, the frequency of a compressor and the rotating speed of a fan, so that the maximum operation time of the parking air conditioner is prolonged, and the service life of the storage battery is prolonged.
Fig. 3 is a schematic structural diagram of a control device of an in-vehicle air conditioner according to an embodiment of the present invention, the control device of the in-vehicle air conditioner including:
an obtaining module 301, configured to obtain the number of times the battery is charged after an engine is turned off and a voltage of the battery;
a determining module 302, configured to determine a voltage threshold of the storage battery allowed to operate under voltage according to the number of charging times;
and the control module 303 is configured to control an operation state of the vehicle-mounted air conditioner or a charging state of the storage battery according to a comparison result between the voltage and the voltage threshold.
The control device of the vehicle-mounted air conditioner provided by the embodiment can acquire the charging frequency of the storage battery after the engine is shut down and the voltage of the storage battery, determine the voltage threshold value of the storage battery for allowing the undervoltage operation according to the charging frequency, and then control the operation state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the comparison result of the voltage and the voltage threshold value. The charging times can indicate the times of once undervoltage operation of the storage battery, and the corresponding voltage threshold value can be determined through the charging times, so that the storage battery can be controlled to avoid operating in a serious undervoltage state, the storage battery can be charged in time, and the service life of the storage battery is prolonged.
Optionally, as an embodiment, the number of times of charging is positively correlated with the voltage threshold.
Optionally, as an embodiment, the control module is specifically configured to: if the charging times are less than or equal to a first time threshold value, judging whether the voltage is less than a first voltage threshold value; if not, controlling the vehicle-mounted air conditioner to operate at a first refrigeration speed; if so, judging whether the voltage is greater than or equal to a second voltage threshold value, wherein the second voltage threshold value is smaller than the first voltage threshold value; if the voltage is greater than or equal to the second voltage threshold value, controlling the vehicle-mounted air conditioner to operate at a second refrigeration speed; the second cooling speed is less than the first cooling speed; and if the voltage is smaller than the second voltage threshold, controlling a power generation device to charge the storage battery.
Optionally, as an embodiment, the control module is specifically configured to: if the charging times are larger than the first time threshold value, judging whether the voltage is smaller than a third voltage threshold value; the third voltage threshold is greater than the first voltage threshold; if not, controlling the vehicle-mounted air conditioner to operate at a third refrigeration speed; if so, judging whether the voltage is smaller than a fourth voltage threshold, wherein the fourth voltage threshold is smaller than the third voltage threshold, and the fourth voltage threshold is larger than the second voltage threshold; if the voltage is greater than or equal to the fourth voltage threshold value, controlling the vehicle-mounted air conditioner to operate at a fourth refrigeration speed; the fourth cooling speed is less than the third cooling speed; and if the voltage is smaller than the fourth voltage threshold, controlling a power generation device to charge the storage battery.
Optionally, as an embodiment, the control module is further configured to: and if the voltage is smaller than the fourth voltage threshold, controlling the vehicle-mounted air conditioner to stop.
Optionally, as an embodiment, the control module is further configured to: and if the voltage is smaller than the fourth voltage threshold, controlling the engine to charge the storage battery.
Optionally, as an embodiment, the apparatus further includes a forced start module, configured to: and if a forced starting operation input by a user is received, clearing the charging times, and controlling the running state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the cleared charging times and the cleared voltage.
Optionally, as an embodiment, the apparatus further includes an under-voltage prompt module, configured to: and if the voltage is smaller than the second voltage threshold or smaller than the fourth voltage threshold, outputting a storage battery under-voltage prompt.
Optionally, as an embodiment, the under-voltage prompt module is further configured to: and under the condition of controlling the vehicle-mounted air conditioner to stop, outputting a prompt that the charging and discharging times of the storage battery are excessive and/or outputting a vehicle-mounted air conditioner stop protection prompt.
The control device of the vehicle-mounted air conditioner provided in this embodiment can implement each process in the above-described embodiment of the control method of the vehicle-mounted air conditioner, and is not described here again to avoid repetition.
The embodiment also provides a vehicle-mounted air conditioning system, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium stores a computer program, and the computer program is read by the processor and runs to realize the control method of the vehicle-mounted air conditioner.
The invention provides a computer-readable storage medium, which stores a computer program, and when the computer program is read and executed by a processor, the control method of the vehicle-mounted air conditioner is realized
The processes of the embodiment can achieve the same technical effect, and are not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The control device and the vehicle-mounted air conditioning system of the vehicle-mounted air conditioner disclosed by the embodiment correspond to the control method of the vehicle-mounted air conditioner disclosed by the embodiment, so that the description is simple, and relevant parts can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. A control method of a vehicle-mounted air conditioner is characterized in that the vehicle-mounted air conditioner is powered by a storage battery, and the method comprises the following steps:
acquiring the charging times of the storage battery after the engine is shut down and the voltage of the storage battery;
determining a voltage threshold value of the storage battery allowed to operate under voltage according to the charging times;
and controlling the running state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the comparison result of the voltage and the voltage threshold.
2. The method according to claim 1, wherein the number of charges is positively correlated with the voltage threshold.
3. The control method of the vehicle air conditioner according to claim 1, wherein the controlling of the operating state of the vehicle air conditioner or the state of charge of the storage battery according to the result of comparing the voltage with the voltage threshold includes:
if the charging times are less than or equal to a first time threshold value, judging whether the voltage is less than a first voltage threshold value;
if not, controlling the vehicle-mounted air conditioner to operate at a first refrigeration speed;
if yes, judging whether the voltage is larger than or equal to a second voltage threshold value; the second voltage threshold is less than the first voltage threshold;
if the voltage is greater than or equal to the second voltage threshold value, controlling the vehicle-mounted air conditioner to operate at a second refrigeration speed; the second cooling speed is less than the first cooling speed;
and if the voltage is smaller than the second voltage threshold, controlling a power generation device to charge the storage battery.
4. The control method of the vehicle air conditioner according to claim 3, wherein the controlling of the operating state of the vehicle air conditioner or the state of charge of the storage battery according to the result of comparing the voltage with the voltage threshold value includes:
if the charging times are larger than the first time threshold value, judging whether the voltage is smaller than a third voltage threshold value; the third voltage threshold is greater than the first voltage threshold;
if not, controlling the vehicle-mounted air conditioner to operate at a third refrigeration speed;
if yes, judging whether the voltage is smaller than a fourth voltage threshold value; the fourth voltage threshold is less than the third voltage threshold, the fourth voltage threshold being greater than the second voltage threshold;
if the voltage is greater than or equal to the fourth voltage threshold value, controlling the vehicle-mounted air conditioner to operate at a fourth refrigeration speed; the fourth cooling speed is less than the third cooling speed;
and if the voltage is smaller than the fourth voltage threshold, controlling a power generation device to charge the storage battery.
5. The control method of the vehicle air conditioner according to claim 4, characterized by further comprising:
and if the voltage is smaller than the fourth voltage threshold, controlling the vehicle-mounted air conditioner to stop.
6. The control method of the vehicle air conditioner according to claim 4, characterized by further comprising:
and if the voltage is smaller than the fourth voltage threshold, controlling the engine to charge the storage battery.
7. The control method of the vehicle air conditioner according to claim 5, characterized by further comprising:
and if a forced starting operation input by a user is received, clearing the charging times, and controlling the running state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the cleared charging times and the cleared voltage.
8. The control method of the vehicle air conditioner according to any one of claims 3 to 6, characterized by further comprising:
and before controlling the power generation device to charge the storage battery, outputting a storage battery under-voltage prompt.
9. The control method of the vehicle air conditioner according to claim 5, characterized by further comprising:
and under the condition of controlling the vehicle-mounted air conditioner to stop, outputting a prompt that the charging and discharging times of the storage battery are excessive and/or outputting a vehicle-mounted air conditioner stop protection prompt.
10. A control apparatus of an in-vehicle air conditioner, characterized in that the in-vehicle air conditioner is powered by a storage battery, the method comprising:
the acquisition module is used for acquiring the charging times of the storage battery after the engine is shut down and the voltage of the storage battery;
the determining module is used for determining a voltage threshold value of the storage battery allowed to operate under voltage according to the charging times;
and the control module is used for controlling the running state of the vehicle-mounted air conditioner or the charging state of the storage battery according to the comparison result of the voltage and the voltage threshold.
11. An in-vehicle air conditioning system characterized by comprising a processor and a computer-readable storage medium storing a computer program which is read and executed by the processor, and implementing the control method of the in-vehicle air conditioner according to any one of claims 1 to 9.
12. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when read and executed by a processor, implements the control method of the in-vehicle air conditioner according to any one of claims 1 to 8.
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| CN111775654B (en) | 2022-07-08 |
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