CN111775654A - A vehicle air conditioner control method, device and vehicle air conditioner system - Google Patents

Abstract

The invention provides a control method, device and vehicle air conditioning system for a vehicle air conditioner. The method includes: obtaining the charging times of the battery after the engine is turned off and the voltage of the battery; determining the voltage threshold of the battery allowing undervoltage operation according to the charging times; The comparison result between the voltage and the voltage threshold controls the running state of the vehicle air conditioner or the charging state of the battery. The embodiment of the present invention can control the storage battery to avoid running in a serious undervoltage state, and charge the storage battery in time to prolong the service life of the storage battery.

Description

A vehicle air conditioner control method, device and vehicle air conditioner system

technical field

The present invention relates to the technical field of air conditioners, and in particular, to a control method and device of a vehicle air conditioner and a vehicle air conditioner system.

Background technique

With social development and consumption upgrading, consumers have higher and higher requirements for product comfort. Taking long-distance trucks as an example, they are the main force in the transportation industry. In order to improve the driving comfort in hot weather, most of the parking air conditioners are additionally installed on the basis of the original air conditioners. Battery powered. During driving, the original vehicle air conditioner is driven by the engine for cooling; during parking, the cost of idling the original vehicle air conditioner is relatively high, and the battery is used to drive the parking air conditioner for cooling.

When using the battery to drive the parking air conditioner, the existing control method of the parking air conditioner focuses on extending the operating time of the parking air conditioner, ignoring whether the battery is in a power-deficient state. battery life.

SUMMARY OF THE INVENTION

The problem solved by the present invention is that the existing control mode of the parking air conditioner leads to a short service life of the battery.

In order to solve the above problem, the present invention provides a control method for a vehicle-mounted air conditioner. The vehicle-mounted air conditioner is powered by a battery, and the method includes: obtaining the charging times of the battery after the engine is turned off and the voltage of the battery; determining according to the charging times. The voltage threshold for the battery to allow under-voltage operation; the number of charging times is positively related to the voltage threshold; according to the comparison result between the voltage and the voltage threshold, the operating state of the vehicle air conditioner or the charging of the battery is controlled state.

In the invention, the number of times of charging indicates the number of times the battery has been operated under voltage, and the corresponding voltage threshold is determined by the number of times of charging, so that the battery can be controlled to avoid running in a serious undervoltage state, and the battery can be charged in time to prolong the service life of the battery.

Optionally, the number of times of charging is positively correlated with the voltage threshold.

The present invention provides the relationship between the number of charging times and the voltage threshold. The greater the number of charging times, the higher the correspondingly set voltage threshold, so as to avoid running in a severe undervoltage state.

Optionally, the controlling the operating state of the vehicle air conditioner or the charging state of the battery according to the comparison result between the voltage and the voltage threshold includes: if the number of times of charging is less than or equal to a first threshold of times, Then judge whether the voltage is less than the first voltage threshold; if not, control the vehicle air conditioner to run at the first cooling speed; if so, judge whether the voltage is greater than or equal to the second voltage threshold, and the second voltage threshold is less than the first voltage threshold; if the voltage is greater than or equal to the second voltage threshold, the vehicle air conditioner is controlled to operate at a second cooling speed; the second cooling speed is less than the first cooling speed; if the When the voltage is less than the second voltage threshold, the power generation device is controlled to charge the battery.

The invention provides a feasible way to control the vehicle air conditioner or the charging of the battery, which can prevent the battery from running in a serious undervoltage state and prolong the service life of the battery.

Optionally, the controlling the operating state of the vehicle air conditioner or the charging state of the battery according to the comparison result between the voltage and the voltage threshold includes: if the number of times of charging is greater than the first number of times threshold , then judge whether the voltage is less than the third voltage threshold; the third voltage threshold is greater than the first voltage threshold; if not, control the vehicle air conditioner to run at the third cooling speed; if so, judge the voltage Whether it is less than a fourth voltage threshold, the fourth voltage threshold is less than the third voltage threshold, and the fourth voltage threshold is greater than the second voltage threshold; if the voltage is greater than or equal to the fourth voltage threshold, control The vehicle air conditioner operates at a fourth cooling speed; the fourth cooling speed is lower than the third cooling speed; if the voltage is lower than the fourth voltage threshold, the power generation device is controlled to charge the battery.

The invention provides another feasible way to control the vehicle air conditioner or the battery charging, which can prevent the battery from running in a serious undervoltage state again and prolong the service life of the battery.

Optionally, the method further includes: if the voltage is less than the fourth voltage threshold, controlling the vehicle air conditioner to stop.

The invention can perform the shutdown protection of the vehicle air conditioner when the battery runs in a serious under-voltage state for many times, so as to protect the battery.

Optionally, the method further includes: if the voltage is less than the fourth voltage threshold, controlling the engine to charge the battery.

The invention can start the engine to charge when the storage battery runs in a serious undervoltage state for many times, and can reduce the energy consumption.

Optionally, the method further includes: if a forced start operation input by a user is received, clearing the charging times, and controlling the on-board air conditioner according to the charging times and the voltage after clearing. The operating state or the state of charge of the battery.

The present invention also provides a forced start mechanism, which improves user experience.

Optionally, the method further includes: if the voltage is less than the second voltage threshold or less than the fourth voltage threshold, outputting a battery undervoltage prompt.

The invention also provides a battery undervoltage prompting mechanism, which is convenient for the user to know the use state of the battery.

Optionally, the method further includes: in the case of controlling the on-board air conditioner to stop, outputting a prompt that the number of times of battery charging and discharging is too many, and/or outputting a prompt to protect the on-board air conditioner from being shut down.

The invention also provides a reminder mechanism for the number of battery discharges and a shutdown protection reminder mechanism, which is convenient for users to know the use state of the battery.

The invention provides a control device for a vehicle-mounted air conditioner. The vehicle-mounted air conditioner is powered by a battery. The method includes: an acquisition module, used for acquiring the charging times of the battery after the engine is turned off and the voltage of the battery; The number of times of charging determines the voltage threshold of the battery allowing under-voltage operation; the control module is configured to control the running state of the vehicle air conditioner or the charging state of the battery according to the comparison result between the voltage and the voltage threshold.

The present invention provides an in-vehicle air conditioner system, comprising a computer-readable storage medium storing a computer program and a processor, and when the computer program is read and run by the processor, the above-mentioned control method of an in-vehicle air conditioner is implemented.

The present invention provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is read and executed by a processor, the above-mentioned control method of an on-board air conditioner is implemented.

The control device of the vehicle air conditioner and the vehicle air conditioner system of the present invention can achieve the same technical effect as the above-mentioned control method of the vehicle air conditioner.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

1 is a schematic flow chart of a method for controlling a vehicle-mounted 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 a vehicle air conditioner in an embodiment of the present invention.

Description of reference numbers:

301-acquiring module; 302-determining module; 303-controlling module.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

If the battery is in a state of power loss for a long time, the plates will slowly vulcanize. This chronic vulcanization will continuously reduce the charge capacity of the battery until it fails to start, which greatly shortens the service life of the battery. In order to reduce the active substances on the battery plate in time, reduce the chronic vulcanization of the plate, increase the charge capacity of the battery, and prolong its service life, it is necessary to regularly replenish the battery of the vehicle in use.

1 is a schematic flow chart of a method for controlling a vehicle-mounted air conditioner in an embodiment of the present invention, which can be applied to a vehicle-mounted air conditioner or a vehicle-mounted air-conditioning system, where the vehicle-mounted air conditioner is powered by a battery, and the method includes:

S102, obtaining the charging times of the battery after the engine is turned off and the voltage of the battery;

Wherein, whether the engine is turned off 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 can be set to 30s. When it is detected that the start-stop state of the engine is a stop state, the number of charging times of the battery after the current flameout is recorded as zero, and one is added to the above-mentioned charging times for each charging time.

After the engine is turned off, the voltage of the battery can be detected. It can be determined whether it is in an undervoltage state through the voltage of the battery, and based on this undervoltage state, the vehicle air conditioner and power generation device can be controlled.

S104: Determine a voltage threshold of the battery allowing under-voltage operation according to the above-mentioned charging times.

It can be understood that generally, when the voltage of the battery is much lower than the rated voltage, the charging device is controlled to charge the battery, so the number of times the battery is charged after the engine is turned off can represent the number of undervoltages of the battery. Optionally, if the battery has more undervoltage times, the voltage threshold of the battery that can allow undervoltage operation is higher, thereby prolonging the life of the battery.

The above-mentioned charging times are positively related to the voltage threshold, that is, the more charging times, the higher the voltage threshold. For example, the voltage threshold is increased every time the charging times increase, or the voltage threshold is increased every N times that the charging times are increased. This is not limited.

Each time the power generation device charges the battery, it means that the on-board air conditioner has been operated under severe undervoltage once, and the voltage of the battery is not allowed to decrease to the same level in the next operation, that is, the voltage threshold of the battery to allow undervoltage operation is increased. If the voltage threshold is set at the same low level, the battery will run again in a severe undervoltage state. According to the characteristics of the battery, the above-mentioned operation mode will reduce the service life of the battery. In order to prolong the service life of the battery, the on-board air conditioner is not allowed to run for too long in a serious undervoltage state.

S106, according to the comparison result between the voltage and the voltage threshold, control the running state of the vehicle air conditioner or the charging state of the battery.

If the voltage of the battery is lower than the voltage threshold, the on-board air conditioner can be controlled to operate in a low power consumption mode to reduce the cooling speed, such as reducing the frequency of the compressor, the speed of the internal unit, the speed of the external unit or the power of other loads in the air conditioner, etc.; If the voltage of the battery is lower than the voltage threshold, the power generation device can also be controlled to charge the battery, and the power generation device can be a vehicle-mounted generator or an engine.

It should be noted here that multiple different voltage thresholds can be determined according to the number of charging times, and based on the comparison result between the voltage and the multiple different voltage thresholds, the operating state of the vehicle air conditioner or the charging state of the battery can be controlled.

The control method of the vehicle air conditioner provided in this embodiment can obtain the charging times of the battery after the engine is turned off and the voltage of the battery, and determine the voltage threshold of the battery to allow under-voltage operation according to the charging times, and then according to the comparison result between the voltage and the voltage threshold, Control the running status of the vehicle air conditioner or the charging status of the battery. Since the number of charging times can indicate the number of times the battery has been under-voltage running, the corresponding voltage threshold is determined by the number of charging times, so that the battery can be controlled to avoid running in a serious under-voltage state, and the battery can be charged in time to prolong the service life of the battery.

Combined with the voltage threshold corresponding to the number of charging times and the voltage of the battery, the running state of the vehicle air conditioner can be controlled or the battery can be charged in time. As an embodiment, the above S106 includes:

A1, if the number of times of charging is less than or equal to the first times threshold, determine whether the voltage is less than the first voltage threshold.

When the number of charging times is less than the first number of times threshold, it indicates that the number of times of battery under-voltage operation is small, and the first number of times threshold can take any value from 1 to 3, for example. In the following steps, the voltage of the battery can be periodically detected, and the detection period can take any value from 15min to 40min, for example.

A2, if the voltage of the battery is greater than or equal to the first voltage threshold, control the vehicle-mounted air conditioner to run at the first cooling speed.

If the voltage of the battery is greater than or equal to the first voltage threshold, it indicates that the battery has sufficient power, and the vehicle air conditioner can cool at the fastest speed according to the temperature set by the user, thereby improving the operating efficiency of the air conditioner. The on-board air conditioner is controlled to run at the first cooling speed, specifically, by controlling the frequency of the on-board air conditioner compressor and/or by controlling the rotational speed of the on-board air conditioner fan.

A3, if the voltage of the battery is less than the first voltage threshold, determine whether the voltage is greater than or equal to the second voltage threshold.

Wherein, the second voltage threshold is smaller than the above-mentioned first voltage threshold. If the voltage of the battery is less than the first voltage threshold, continue to determine whether the voltage is greater than or equal to the second voltage threshold.

A4, if the voltage is greater than or equal to the second voltage threshold, control the vehicle-mounted air conditioner to operate at the second cooling speed.

Wherein, the second cooling speed is lower than the above-mentioned first cooling speed. If the voltage of the battery is between the second voltage threshold and the first voltage threshold, indicating that the battery power is insufficient, the on-board air conditioner reduces the cooling speed, thereby reducing power consumption and extending the operating time of the on-board air conditioner. The reduction of the cooling speed of the vehicle air conditioner can specifically be achieved by reducing the frequency of the vehicle air conditioner compressor and/or reducing the rotational speed of the vehicle air conditioner fan. Optionally, the reduced frequency of the compressor can be obtained by multiplying the maximum frequency of the compressor by a voltage coefficient, where the voltage coefficient is the ratio of the current voltage of the battery to the rated voltage.

A5, if the voltage is less than the second voltage threshold, control the power generation device to charge the battery.

If the voltage of the battery is less than the second voltage threshold, it means that the battery has been running under voltage, and the battery needs to be charged in time. In order to remind the user, in this case, the battery undervoltage prompt can be output at the same time.

When the number of charging times increases, the operating state of the vehicle air conditioner is controlled or the battery is charged in time based on a higher voltage threshold. As another implementation manner, the above S106 includes:

B1, if the number of times of charging is greater than the threshold of the first number of times, determine whether the voltage is less than the third voltage threshold. Wherein, the third voltage threshold is greater than the above-mentioned first voltage threshold. As the number of charges increases, the respective voltage thresholds also increase.

B2, if the voltage is greater than or equal to the third voltage threshold, control the vehicle-mounted air conditioner to operate at the third cooling speed.

B3, if the voltage is less than the third voltage threshold, determine whether the voltage is less than the fourth voltage threshold. The fourth voltage threshold is smaller than the third voltage threshold, and the fourth voltage threshold is greater than the second voltage threshold.

B4, if the voltage is greater than or equal to the fourth voltage threshold, control the vehicle-mounted air conditioner to operate at the fourth cooling speed. Wherein, the fourth cooling speed is lower than the third cooling speed. By reducing the cooling speed of the on-board air conditioner, power consumption can be reduced and the operating time of the on-board air conditioner can be extended. Compared with the above-mentioned embodiment, the third cooling speed may be equal to or lower than the first cooling speed, and the fourth cooling speed may be equal to or lower than the second cooling speed.

B5, if the voltage is less than the fourth voltage threshold, control the power generation device to charge the battery. In order to remind the user, in this case, the battery undervoltage prompt can be output at the same time, so that the user can understand the use status of the battery.

In this embodiment, the number of times of charging is increased compared with the times of charging in the above-mentioned embodiment, and accordingly: the third voltage threshold is greater than the first voltage threshold, and the fourth voltage threshold is greater than the second voltage threshold. By increasing the above two voltage thresholds A voltage threshold can prevent the battery from running in a serious undervoltage state again and prolong the service life of the battery. It should be noted that, for the specific content of this embodiment, reference may be made to the specific content in the foregoing embodiment, and details are not repeated here.

In this embodiment, if the number of charging times continues to increase to reach the allowable number of charging and discharging times, in order to protect the battery, the on-board air conditioner can be controlled for shutdown protection. The method further includes: if the voltage is less than a fourth voltage threshold, controlling the on-board air conditioner to shut down . In this case, the generator may be selected to charge the battery, rather than the generator being selected to charge the battery. In order to remind the user, in the case of controlling the shutdown of the on-board air conditioner, a prompt of excessive battery charge and discharge times can be output, and/or a prompt of the shutdown protection of the on-board air conditioner can be output.

During the driving process of the vehicle, when the battery is charged by the generator, the only function of the generator is to convert the internal energy Q of the fuel into electrical energy P1, and the energy conversion rate is relatively low; when the battery is charged by the engine, the main use of energy is fuel. The internal energy Q of the truck is converted into the mechanical energy W of the truck, and the secondary purpose is to convert the electrical energy P2. Since (P2+W)/Q>P1/Q, using the generator to charge the battery as little as possible can reduce energy consumption.

After the on-board air conditioner is shut down for protection, if the user still wants to start the on-board air conditioner, the forced start button can be used to force the start. According to the charging times and voltage after clearing, it controls the running status of the vehicle air conditioner or the charging status of the battery. It can be understood that, after the user forcibly starts the on-board air conditioner, the number of times of charging can be reset to zero, and the above steps of controlling the running state of the on-board air conditioner or the charging state of the battery can be performed again.

The method for controlling the vehicle air conditioner provided in this embodiment controls the charging of the battery by the power generating device, the running time and the cooling speed of the vehicle air conditioner by detecting the engine flameout state of the truck, the voltage of the battery, and the number of times of charging the battery, which can take into account the operating time and the cooling speed of the vehicle air conditioner. battery life.

In the following embodiments, taking the parking air conditioner of a truck as an example, the voltage of the battery is expressed as the percentage of the current voltage to the rated voltage. Referring to a schematic flow chart of a method for controlling a parking air conditioner shown in FIG. 2 , it includes:

S201, it is detected whether the engine is turned off.

The parking air conditioner can detect whether the engine is turned off through the detection device. If it is not turned off, wait for t ₀ and then check again (t ₀ can be taken as 30s) until it is detected that the engine is turned off. At this time, the parking air conditioner records the charging times of the battery, that is, the running times of the generator n=0.

S202, the battery voltage U ₀ is detected.

S203, it is judged whether 70%≤U ₀ ≤100% is satisfied. If yes, execute S204; if not, execute S205.

S204, control the compressor to run at the maximum frequency for 30 minutes.

When the battery voltage U ₀ satisfies 70%≤U ₀ ≤100%, the compressor can run at the maximum frequency, thereby cooling at the fastest speed according to the temperature set by the user and improving the operating efficiency of the air conditioner. After the 30min running conditions are met, the voltage is detected, periodically detected and judged, and the logic is run back and forth.

S205, determine whether 50%≤U ₀ ≤70% is satisfied. If yes, execute S206; if not, execute S207.

S206, the compressor is controlled to run at the first frequency for 30 minutes.

When the battery voltage U ₀ satisfies 50%≤U ₀ ≤70%, the compressor operates at medium and low frequency. After the 30min running conditions are met, the voltage is detected, periodically detected and judged, and the logic is run back and forth. The first frequency f=a×f _max , where a=U ₀ /U, U=24V.

S207, output the undervoltage prompt, start the on-board generator to charge the battery, and record the generator running times n=n+1.

The under-voltage reminder can be displayed on the indoor unit display panel of the parking air conditioner, and the user will be voiced. Start the on-board generator, start charging the battery, and record the number of times the generator runs at this time n=n+1.

S208, stop charging after the on-board generator is charged for T _n =1.5h.

S209, determine whether n≤3 is satisfied. If yes, execute S202; if not, execute S210.

S210, the battery voltage U ₀ is detected.

S211, it is judged whether 80% _≤U0≤100 % is satisfied. If yes, execute S212; if not, execute S213.

S212, control the compressor to run at the maximum frequency for 30 minutes.

When the battery voltage U ₀ satisfies 80%≤U ₀ ≤100%, the compressor can run at the maximum frequency, thereby cooling at the fastest speed according to the temperature set by the user and improving the operating efficiency of the air conditioner. After the 30min running conditions are met, the voltage is detected, periodically detected and judged, and the logic is run back and forth.

S213, determine whether 60%≤U ₀ ≤80% is satisfied. If yes, execute S214; if not, execute S215.

S214, control the compressor to run at the second frequency for 30 minutes.

When the battery voltage U ₀ satisfies 60%≤U ₀ ≤80%, the compressor operates at medium and low frequency. After the 30min running conditions are met, the voltage is detected, periodically detected and judged, and the logic is run back and forth. The second frequency f=a×f _max , where a=U ₀ /U, U=24V.

S215 , output an undervoltage prompt, start the on-board generator to charge the battery, and record the generator running times n=n+1.

The under-voltage reminder can be displayed on the indoor unit display panel of the parking air conditioner, and the user will be voiced. Start the on-board generator, start charging the battery, and record the number of times the generator runs at this time n=n+1.

S216, determine whether n≤6 is satisfied. If yes, execute S210; if not, execute S217.

S217, the battery voltage U ₀ is detected.

S218, determine whether 85%≤U ₀ ≤100% is satisfied. If yes, execute S212; if not, execute S213.

S219, control the compressor to run at the maximum frequency for 30 minutes.

When the battery voltage U ₀ satisfies 85%≤U ₀ ≤100%, the compressor can run at the maximum frequency, thereby cooling at the fastest speed according to the temperature set by the user, and improving the operating efficiency of the air conditioner. After the 30min running conditions are met, the voltage is detected, periodically detected and judged, and the logic is run back and forth.

S220, determine whether 65%≤U ₀ ≤85% is satisfied. If yes, execute S221; if not, execute S222.

S221, control the compressor to run at the third frequency and the internal unit to run at the first rotational speed for 30 minutes.

When the battery voltage U ₀ satisfies 65%≤U ₀ ≤85%, the compressor runs at low frequency and the internal unit runs at medium and low speed. After the 30min running conditions are met, the voltage is detected, periodically detected and judged, and the logic is run back and forth. The third frequency f=f _min ; the first rotational speed v=V _m ×U ₀ /U, where V _m is the maximum set rotational speed.

It should be noted that, in each of the above steps, the running time of the compressor and the detection period of the battery voltage can be flexibly determined according to the actual usage.

S222, the parking air conditioner is stopped for protection, and the engine is started to charge the battery.

If it does not satisfy 65% _≤U0≤85 %, the generator will stop working, the panel will display the shutdown protection sign, reminding the user that the number of charging and discharging has been too many, and the parking air conditioner will be shut down for protection. The engine starts charging the battery until U ₀ =U=24V the engine stops working.

S223: Receive a forced start operation input by the user.

If the user still wants to start the air conditioner, it can be forced to start by pressing the forced start button to reset the battery charging times, and perform the above S202 again.

This embodiment provides a control method for a parking air conditioner. By detecting whether the engine is turned on or off, the voltage percentage of the battery, and the number of times of charging the battery, the on-board generator is used to control the charging of the battery, the running time of the parking air conditioner, and the frequency of the compressor. and fan speed, thereby extending the maximum operating time of the parking air conditioner and improving the service life of the battery.

3 is a schematic structural diagram of a control device for a vehicle-mounted air conditioner in an embodiment of the present invention, and the control device for the vehicle-mounted air conditioner includes:

an obtaining module 301, configured to obtain the charging times of the battery after the engine is turned off and the voltage of the battery;

A determination module 302, configured to determine a voltage threshold for allowing undervoltage operation of the battery according to the number of times of charging;

The control module 303 is configured to control the running state of the vehicle air conditioner or the charging state of the battery according to the comparison result between the voltage and the voltage threshold.

The control device of the vehicle-mounted air conditioner provided in this embodiment can obtain the charging times of the battery after the engine is turned off and the voltage of the battery, and determine the voltage threshold for the battery to allow under-voltage operation according to the charging times, and then according to the comparison result between the voltage and the voltage threshold, Control the running status of the vehicle air conditioner or the charging status of the battery. Since the number of charging times can indicate the number of times the battery has run under voltage, the corresponding voltage threshold can be determined through the number of charging times, so that the battery can be controlled to avoid running in a serious undervoltage state, and the battery can be charged in time to prolong the service life of the battery.

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 number of times of charging is less than or equal to a first times threshold, determine whether the voltage is less than a first voltage threshold; if not, control the The on-board air conditioner operates at the first cooling speed; if it is, it is judged whether the voltage is greater than or equal to a second voltage threshold, and the second voltage threshold is less than the first voltage threshold; if the voltage is greater than or equal to the second voltage threshold , the vehicle air conditioner is controlled to run at a second cooling speed; the second cooling speed is lower than the first cooling speed; if the voltage is lower than the second voltage threshold, the power generation device is controlled to charge the battery.

Optionally, as an embodiment, the control module is specifically configured to: if the number of times of charging is greater than the first number of times threshold, determine whether the voltage is less than a third voltage threshold; the third voltage threshold greater than the first voltage threshold; if not, control the vehicle air conditioner to run at the third cooling speed; if so, judge whether the voltage is less than the fourth voltage threshold, and the fourth voltage threshold is less than the third voltage threshold, the fourth voltage threshold is greater than the second voltage threshold; if the voltage is greater than or equal to the fourth voltage threshold, the vehicle air conditioner is controlled to operate at a fourth cooling speed; the fourth cooling speed is less than the the third cooling speed; if the voltage is less than the fourth voltage threshold, the power generation device is controlled to charge the battery.

Optionally, as an embodiment, the control module is further configured to: control the vehicle air conditioner to stop if the voltage is less than the fourth voltage threshold.

Optionally, as an embodiment, the control module is further configured to: if the voltage is less than the fourth voltage threshold, control the engine to charge the battery.

Optionally, as an embodiment, the device further includes a forced startup module, configured to: if a forced startup operation input by a user is received, reset the number of times of charging, and reset the number of times of charging according to the number of times of charging after clearing. and the voltage to control the running state of the vehicle air conditioner or the charging state of the battery.

Optionally, as an embodiment, the device further includes an undervoltage prompt module, configured to: output a battery undervoltage prompt if the voltage is less than the second voltage threshold or less than the fourth voltage threshold.

Optionally, as an embodiment, the undervoltage prompting module is further configured to: in the case of controlling the shutdown of the on-board air conditioner, output a prompt that the number of times the battery is charged and discharged is excessive, and/or output a prompt for the shutdown protection of the on-board air conditioner. .

The control device for a vehicle-mounted air conditioner provided in this embodiment can implement each process in the embodiments of the above-mentioned control method for a vehicle-mounted air conditioner, which is not repeated here to avoid repetition.

This embodiment also provides a vehicle-mounted air conditioner system, comprising a computer-readable storage medium storing a computer program and a processor, and when the computer program is read and run by the processor, the above-mentioned control method of the vehicle-mounted air conditioner is implemented.

The present invention provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is read and executed by a processor, the above-mentioned control method for a vehicle-mounted air conditioner is realized.

Each process of the embodiment can achieve the same technical effect, and to avoid repetition, it will not be repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

Of course, those skilled in the art can understand that the realization of all or part of the process in the method of the above embodiment can be completed by instructing the control device through a computer level, and the program can be stored in a computer-readable storage medium, so the When the program is executed, it may include the processes of the above-mentioned method embodiments, and the storage medium may be a memory, a magnetic disk, an optical disk, or the like.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be based on the scope defined by the claims.

Finally, it should also be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply these entities or that there is any such actual relationship or sequence between operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. For the vehicle air conditioner control device and vehicle air conditioner system disclosed in the embodiment, since it corresponds to the vehicle air conditioner control method disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method.

The above description of the disclosed embodiments enables 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 implemented in 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 battery, and the method comprises: Obtain the number of times of charging of the battery after the engine is turned off and the voltage of the battery; determining the voltage threshold of the battery allowing under-voltage operation according to the number of times of charging; According to the comparison result between the voltage and the voltage threshold, the operating state of the vehicle air conditioner or the charging state of the battery is controlled. 2 . The method for controlling a vehicle air conditioner according to claim 1 , wherein the number of times of charging is positively correlated with the voltage threshold. 3 . 3 . The control method of the vehicle air conditioner according to claim 1 , wherein, according to the comparison result between the voltage and the voltage threshold, the operation state of the vehicle air conditioner or the charging state of the battery is controlled, 3 . include: If the number of times of charging is less than or equal to the first times threshold, determine whether the voltage is less than the first voltage threshold; If not, controlling the vehicle air conditioner to run at the first cooling speed; If so, determine whether the voltage is greater than or equal to a second voltage threshold; the second voltage threshold is less than the first voltage threshold; If the voltage is greater than or equal to the second voltage threshold, the on-board air conditioner is controlled to operate at a second cooling speed; the second cooling speed is less than the first cooling speed; If the voltage is less than the second voltage threshold, the power generation device is controlled to charge the battery. 4 . The control method of the vehicle air conditioner according to claim 3 , wherein, according to the comparison result between the voltage and the voltage threshold, the operation state of the vehicle air conditioner or the charging state of the battery is controlled, 5 . include: If the number of charging times is greater than the first number of times threshold, determine whether the voltage is less than a third voltage threshold; the third voltage threshold is greater than the first voltage threshold; If not, controlling the vehicle air conditioner to operate at a third cooling speed; If so, determine whether the voltage is less than a fourth voltage threshold; the fourth voltage threshold is less than the third voltage threshold, and the fourth voltage threshold is greater than the second voltage threshold; If the voltage is greater than or equal to the fourth voltage threshold, the vehicle air conditioner is controlled to operate at a fourth cooling speed; the fourth cooling speed is less than the third cooling speed; If the voltage is less than the fourth voltage threshold, the power generating device is controlled to charge the battery. 5. The control method of a vehicle-mounted air conditioner according to claim 4, wherein the method further comprises: If the voltage is less than the fourth voltage threshold, the on-board air conditioner is controlled to stop. 6. The control method of the vehicle-mounted air conditioner according to claim 4, wherein the method further comprises: If the voltage is less than the fourth voltage threshold, the engine is controlled to charge the battery. 7. The control method of the vehicle-mounted air conditioner according to claim 5, wherein the method further comprises: If a forced start operation input by the user is received, the charging times are reset to zero, and the running state of the vehicle air conditioner or the charging state of the battery is controlled according to the reset charging times and the voltage. 8. The control method of the vehicle-mounted air conditioner according to any one of claims 3-6, wherein the method further comprises: Before controlling the power generation device to charge the battery, output a battery undervoltage prompt. 9. The control method of a vehicle-mounted air conditioner according to claim 5, wherein the method further comprises: In the case of controlling the shutdown of the vehicle air conditioner, output a prompt that the number of times the battery is charged and discharged is excessive, and/or output a shutdown protection prompt of the vehicle air conditioner. 10. A control device for a vehicle air conditioner, wherein the vehicle air conditioner is powered by a battery, the method comprising: an acquisition module, configured to acquire the charging times of the battery after the engine is turned off and the voltage of the battery; a determining module, configured to determine a voltage threshold for allowing undervoltage operation of the battery according to the number of times of charging; The control module is configured to control the running state of the vehicle air conditioner or the charging state of the battery according to the comparison result between the voltage and the voltage threshold. 11. A vehicle-mounted air-conditioning system, characterized in that it comprises a computer-readable storage medium and a processor stored with a computer program, and when the computer program is read and run by the processor, it realizes any of claims 1-9. The control method of the vehicle air conditioner described in one item. 12. A computer-readable storage medium, characterized in that, the computer-readable storage medium stores a computer program, and when the computer program is read and executed by a processor, the computer program can realize any one of claims 1-8. The control method of the vehicle air conditioner described above.

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