Parking air conditioner control method and parking air conditioner

Abstract

The invention relates to the technical field of air conditioning equipment, particularly provides a control method of a parking air conditioner and the parking air conditioner, and aims to solve the problems that the normal use of other electric equipment of a vehicle is affected due to the fact that an existing parking air conditioner is high in power consumption and is used under the condition that the electric quantity of a storage battery is too low and the storage battery is lack of electricity. And the service life of the storage battery is shortened. In order to achieve the purpose, the parking air conditioner is installed on a vehicle, the vehicle comprises an engine and a storage battery, the storage battery can supply power to the parking air conditioner, and the control method comprises the steps that when a control instruction for starting the parking air conditioner is received, whether the engine is in a starting state or a stopping state is judged; obtaining the electric quantity of a battery; and selectively starting the parking air conditioner according to the judgment result and the electric quantity. Through the arrangement, the parking air conditioner can be reasonably started and operated under different states of the engine, feed or power failure of the storage battery is prevented, normal use of other electric equipment of a vehicle is guaranteed, and the service life of the storage battery is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and specifically provides a control method for a parking air conditioner and a parking air conditioner. Background Art

[0002] In recent years, in order to improve comfort on the road, large cargo vehicles and RVs are equipped with parking air conditioners to adjust the temperature and humidity in the car when parking for rest. At present, such vehicles generally use lithium batteries instead of lead-acid batteries to power parking air conditioners and other electrical equipment. Since lithium batteries have self-undervoltage protection function, and high-power electrical equipment such as car air conditioners, headlights, inverters, wipers, etc. are used simultaneously during driving, the generator's power generation is insufficient for high-power electrical equipment, and there is no excess power to charge the battery, causing the battery to be in a feeding state for a long time, or even protective power off, which not only affects the normal use of electrical equipment, but also affects the service life of the lithium battery.

[0003] In summary, the existing parking air conditioner consumes a lot of power. If used when the battery power is too low, it is easy to cause the battery to run out of power, affecting the normal use of other electrical equipment in the vehicle and shortening the service life of the battery.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Summary of the invention

[0005] The present invention aims to solve the above technical problem, that is, to solve the problem that the existing parking air conditioner has a large power consumption and is easily used when the battery power is too low, causing the battery to run out of power, affecting the normal use of other electrical equipment in the vehicle and shortening the service life of the battery.

[0006] In a first aspect, the present invention provides a control method for a parking air conditioner, wherein the parking air conditioner is installed on a vehicle, the vehicle includes an engine and a battery, the battery can supply power to the parking air conditioner, and the control method includes: upon receiving a control instruction to turn on the parking air conditioner, determining whether the engine is in a start state or a stop state; obtaining the power level of the battery; and selectively turning on the parking air conditioner based on the determination result and the power level.

[0007] In the preferred technical solution of the above control method, the step of "selectively turning on the parking air conditioner according to the judgment result and the power amount" specifically includes: if it is determined that the engine is in the starting state, comparing the power amount with a first preset power amount; and selectively turning on the parking air conditioner according to the comparison result.

[0008] In the preferred technical solution of the above control method, the step of "selectively turning on the parking air conditioner according to the comparison result" specifically includes: if the power level is not less than the first preset power level, turning on the parking air conditioner; and / or if the power level is less than the first preset power level, not turning on the parking air conditioner.

[0009] In a preferred technical solution of the above control method, after "turning on the parking air conditioner", the control method of the present invention further includes: if the power level is less than the first preset power level, turning off the parking air conditioner.

[0010] In the preferred technical solution of the above control method, after "turning off the parking air conditioner", the control method of the present invention also includes: if the power is greater than a second preset power, turning on the parking air conditioner again; wherein the first preset power is less than the second preset power.

[0011] In the preferred technical solution of the above control method, in the case where "the power is less than the first preset power", the control method of the present invention further includes: sending a prompt signal to remind the user to prohibit the use of the air conditioner.

[0012] In the preferred technical solution of the above control method, the step of "selectively turning on the parking air conditioner according to the working state and the power" also includes: if it is determined that the engine is in a shutdown state, comparing the power with a third preset power, wherein the third preset power is less than the first preset power; and selectively turning on the parking air conditioner according to the comparison result.

[0013] In the preferred technical solution of the above control method, the step of "selectively turning on the parking air conditioner according to the comparison result" specifically includes: if the power is not less than the third preset power, turning on the parking air conditioner; and / or if the power is less than the third preset power, not turning on the parking air conditioner.

[0014] In the preferred technical solution of the above control method, the step of "determining whether the engine is in the start-up state or the stop-down state" specifically includes: obtaining the speed of the engine; comparing the speed with the preset speed; if the speed is not less than the preset speed, determining that the engine is in the start-up state; if the speed is less than the preset speed, determining that the engine is in the stop-down state.

[0015] In a second aspect, the present invention provides a parking air conditioner, the parking air conditioner comprising a controller, the controller being configured to be able to execute the above control method.

[0016] In the case of adopting the above technical solution, the parking air conditioner of the present invention is installed on a vehicle, and the vehicle includes an engine and a battery, and the battery can supply power to the parking air conditioner. The control method of the present invention includes: upon receiving a control instruction to turn on the parking air conditioner, judging whether the engine is in a start state or a stop state; obtaining the power of the battery; and selectively turning on the parking air conditioner according to the judgment result and the power. Through such a setting, the starting and operation of the parking air conditioner when the engine and battery of the vehicle are in different states are more reasonable and intelligent, preventing the unreasonable use of the parking air conditioner from causing the battery to feed or enter a protection mode, ensuring the normal use of other electrical equipment in the vehicle, and protecting the battery, thereby extending the service life of the battery.

[0017] Furthermore, the control method of the present invention further includes: if it is determined that the engine is in the starting state, comparing the power with the first preset power; and selectively turning on the parking air conditioner according to the comparison result. Through such a setting, the turning-on condition of the parking air conditioner can be controlled when the engine is in the starting state, preventing the battery from being in the feeding state for a long time and affecting the battery life.

[0018] Furthermore, the control method of the present invention further includes: if the power is not less than the first preset power, the parking air conditioner is turned on; and / or if the power is less than the first preset power, the parking air conditioner is not turned on. Through such a setting, the critical power of the battery entering the feeding state can be calibrated using the first preset power when the engine is in the starting state, thereby setting a safe power for the parking air conditioner to be started, preventing the parking air conditioner from starting when the battery power is low and causing the battery to be in the feeding state, thereby extending the service life of the battery.

[0019] Furthermore, after "turning on the parking air conditioner", the control method of the present invention further includes: if the power is less than the first preset power, turning off the parking air conditioner. Through such a setting, by turning off the parking air conditioner in time, it is possible to prevent the parking air conditioner from continuing to run and consuming power, and avoid the battery from entering a feeding state.

[0020] Furthermore, after "turning off the parking air conditioner", the control method of the present invention further includes: if the power is greater than the second preset power, turning on the parking air conditioner again; wherein the first preset power is less than the second preset power. Through such a setting, on the one hand, the parking air conditioner can be automatically restarted after the battery power is replenished to the safe power, thereby improving the intelligence level of the parking air conditioner; on the other hand, making the first preset power less than the second preset power, that is, the restart power of the parking air conditioner is higher than the safe power for the first start, can prevent the battery power from quickly dropping to the first preset power after the parking air conditioner is restarted, thereby avoiding the parking air conditioner from frequently starting and stopping due to power fluctuations, thereby affecting the stability of the parking air conditioner.

[0021] Furthermore, in the case where the power level is less than the first preset power level, the control method of the present invention further includes: sending a prompt signal to remind the user to prohibit the use of the air conditioner. Through such a setting, on the one hand, it can prevent the user from forcibly turning on the parking air conditioner manually, further improving safety; on the other hand, it can remind the user of the specific reason why it cannot be turned on, preventing the user from misjudging it as an air conditioner failure.

[0022] Furthermore, the control method of the present invention further includes: if it is determined that the engine is in a stopped state, comparing the power with a third preset power, wherein the third preset power is less than the first preset power; and selectively turning on the parking air conditioner according to the comparison result. Through such a setting, the turning-on condition of the parking air conditioner can be controlled when the engine is in a stopped state, preventing the battery from entering a protection mode due to power loss.

[0023] Furthermore, the control method of the present invention further includes: if the power is not less than a third preset power, the parking air conditioner is turned on; and / or if the power is less than the third preset power, the parking air conditioner is not turned on. Through such a setting, the third preset power can be used to calibrate the critical power of the battery entering the protection mode when the engine is stopped, thereby setting a safe power that allows the parking air conditioner to start, preventing the parking air conditioner from being started rashly when the battery power is low, causing the battery to lose power and enter the protection mode.

[0024] Furthermore, the step of "determining whether the engine is in the start state or the stop state" specifically includes: obtaining the engine speed; comparing the speed with the preset speed; if the speed is not less than the preset speed, determining that the engine is in the start state; if the speed is less than the preset speed, determining that the engine is in the stop state. Through such a setting, the determination method is simple and easy to implement, and the determination result is accurate and reliable.

[0025] In addition, the parking air conditioner further provided by the present invention on the basis of the above-mentioned control method has the technical effect possessed by the above-mentioned control method due to the adoption of the above-mentioned control method. Compared with the parking air conditioner before the improvement, the parking air conditioner of the present invention sets the start-up conditions so that it can be started and operated more reasonably when the vehicle's engine and battery are in different states, preventing the battery from being powered on or off, ensuring the normal use of other electrical equipment in the vehicle, and helping to extend the service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0027] Figure 1 is a flow chart of a method for controlling a parking air conditioner according to the present invention;

[0028] Figure 21 is a flow chart of an embodiment of a method for controlling a parking air conditioner according to the present invention. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0030] It should be noted that, in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, and those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific circumstances. In addition, the terms "first", "second", and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] Based on the problem pointed out in the background technology that the existing parking air conditioner has a large power consumption, it is easy to cause the battery to run out of power when used when the battery power is too low, affecting the normal use of other electrical equipment in the vehicle and shortening the service life of the battery. The present invention provides a control method and a parking air conditioner for a parking air conditioner, which enables the parking air conditioner, a mobile control terminal and a vehicle controller to communicate and connect, so that the parking air conditioner can obtain the control instructions from the mobile control terminal and the working status of the engine and battery of the vehicle in real time, and decide whether to execute the power-on instruction sent by the mobile control terminal according to the working status of the engine and the battery, so as to prevent the battery from running out of power and extend the battery life, thereby ensuring the normal use of other electrical equipment.

[0032] Specifically, the parking air conditioner of the present invention is installed on a vehicle. The vehicle includes an engine and a battery. The battery can supply power to the parking air conditioner and electrical equipment of the vehicle.

[0033] Exemplarily, the control module of the parking air conditioner is connected to the vehicle controller and the mobile control terminal using CAN communication, so that the control module of the parking air conditioner can receive control instructions sent by the mobile control terminal in real time, and can also share data with the vehicle controller to obtain the operating status of the vehicle's engine, battery and other equipment in real time. Users can remotely control the parking air conditioner through the APP on the mobile control terminal (such as mobile phones, watches and other devices), and can also view the operating status, faults and maintenance reminders of the parking air conditioner and the engine, battery and other equipment in real time, greatly improving the user's convenience.

[0034] It should be noted that in addition to being controlled by a mobile control terminal, the parking air conditioner can also be controlled by a traditional remote control and control panel, ensuring the diversity and reliability of control.

[0001] Preferably, if Figure 1As shown, based on the structure and principle of the parking air conditioner, the control method provided by the present invention includes:

[0002] S100: upon receiving a control command to start the parking air conditioner, determining whether the engine is in a start state or a stop state;

[0003] S200: obtaining the battery power;

[0004] S300: Selectively turn on the parking air conditioner based on the judgment result and the power level.

[0005] Since the parking air conditioner consumes a lot of power and all the electrical equipment in the vehicle needs to be powered by the battery, when the parking air conditioner is started or operated when the battery power is too low, it will cause rapid consumption of power. The lithium batteries commonly used in vehicles now have an undervoltage protection function, that is, the battery will be protected when the power is lower than a certain value. In this case, when the battery power is lower than 5%, it will enter the protection mode, which will not only affect the normal use of other electrical equipment in the vehicle (such as headlights, inverters, wipers, etc.), but also cause the battery to frequently enter the protection mode, affecting the battery's service life.

[0006] Therefore, the control method of the present invention can construct a protection mechanism for the battery to prevent the battery from being in a feeding state for a long time or frequently entering a protection mode.

[0007] In addition, since the engine will drive the generator to charge the battery when it is started, when the power consumption of the electrical equipment is constant, the battery power decrease rate is different when the engine is started and stopped. Obviously, the power decrease rate is slower when the engine is started. Although it will not enter the protection mode quickly, the problem of the battery being in the power feeding state for a long time needs to be considered. This also determines that the minimum safe power set for the battery is different in different states of the engine, so different control logic needs to be set for the battery in different states of the engine.

[0008] Specifically, after receiving the start control command sent by the user, the parking air conditioner of the present invention will not directly turn on the parking air conditioner, but will first determine the working status of the engine and obtain the battery power. Based on these two pieces of information, it is comprehensively determined whether the parking air conditioner meets the conditions for being allowed to be turned on. It will only choose to turn on if the start conditions are met, and it will not turn on if the start conditions are not met.

[0009] By setting different start-up conditions for the parking air conditioner when the engine is started and stopped, the start-up and operation of the parking air conditioner in different engine states are made more reasonable and intelligent, preventing the unreasonable use of the parking air conditioner from causing the battery to be fed or even enter the protection mode, ensuring the normal use of other electrical equipment in the vehicle, protecting the battery, and extending the battery life.

[0010] Preferably, if Figure 2 As shown, the steps of “selectively turning on the parking air conditioner according to the judgment result and the power” specifically include:

[0011] S310: If it is determined that the engine is in the starting state, comparing the power level with a first preset power level;

[0012] S311: Selectively turning on the parking air conditioner according to the comparison result.

[0013] For example, when the engine is in the starting state, the engine will drive the generator to continuously charge the battery. If the vehicle's electrical equipment and parking air conditioner are turned on at this time, although the battery power decreases relatively slowly, the electrical equipment and parking air conditioner can keep running for a period of time, but because the power generation is not enough to offset the power consumption, the power in the battery cannot be restored, causing the battery to be in a feeding state for a long time, which will also affect the battery's service life.

[0014] Based on this, when the engine is in the starting state, the minimum safe power (first preset power) needs to be set slightly higher. In this case, it is preferably set to 20%. When the power is lower than 20%, the parking air conditioner is not allowed to start, ensuring that the power generated by the generator can be stored in the battery to prevent the battery from being in a power feeding state for a long time.

[0015] If it is determined that the engine is in a stopped state, in a first preferred embodiment of the present invention, the parking air conditioner can be directly started until the power level is lower than the protection power level and enters the protection state.

[0016] Preferably, if Figure 2 As shown, the step of “selectively turning on the parking air conditioner according to the comparison result” specifically includes:

[0017] S312: If the power level is not less than the first preset power level, turning on the parking air conditioner; and / or

[0018] S313: If the power level is less than the first preset power level, the parking air conditioner is not turned on.

[0019] Since the parking air conditioner consumes a large amount of electricity and whether it is turned on or not will not affect the driving performance and safety of the vehicle, when the power is less than the first preset power, turning on the parking air conditioner will be prohibited first.

[0020] The first preset power level can be used to calibrate the critical power level of the battery entering the power feeding state when the engine is started, thereby setting a safe power level for the parking air conditioner to be started when the battery power is low, preventing the parking air conditioner from being started when the battery power is low and causing the battery to be in the power feeding state for a long time, thereby extending the service life of the battery.

[0021] Preferably, if Figure 2As shown, after “turning on the parking air conditioner”, the control method of the present invention further includes:

[0022] S400: If the power level is less than the first preset power level, turn off the parking air conditioner.

[0023] As the parking air conditioner runs, the power in the battery gradually decreases. When the power drops below a first preset power, the control module immediately turns off the parking air conditioner so that the power generated by the generator can be stored in the battery to prevent the battery from entering a feeding state.

[0024] By turning off the parking air conditioner in time, you can prevent the parking air conditioner from continuing to run and causing the power to continue to decrease, and avoid the battery entering the feeding state and damaging the battery.

[0025] like Figure 2 As shown, after “turning off the parking air conditioner”, the control method of the present invention further includes:

[0026] S500: If the power level is greater than the second preset power level, turning on the parking air conditioner again;

[0027] The first preset power level is smaller than the second preset power level.

[0028] Exemplarily, as the generator continues to charge the battery, the battery power gradually recovers. When the power is greater than the second preset power, the system will directly restart the parking air conditioner, or issue a prompt to remind the user to restart the parking air conditioner.

[0029] The control method of the present invention makes the second preset power greater than the first preset power, and preferably sets the second preset power to 25%. In this way, when the parking air conditioner is started again, the power will not drop below 20% quickly and shut down the parking air conditioner, thereby preventing the air conditioner from being frequently started and stopped.

[0030] Through such a setting, on the one hand, the parking air conditioner can be automatically restarted after the battery power is replenished to a safe power level, thereby improving the intelligence level of the parking air conditioner; on the other hand, the first preset power level is made smaller than the second preset power level, that is, the restart power level of the parking air conditioner is higher than the safe power level for the first startup, which can prevent the battery power from quickly dropping to the first preset power level after the parking air conditioner is restarted, thereby avoiding the parking air conditioner from frequently starting and stopping due to power fluctuations, affecting the stability of the parking air conditioner.

[0031] Preferably, in the case where “the power is less than the first preset power”, the control method of the present invention further includes:

[0032] Send out a warning signal to remind users not to use the air conditioner.

[0033] For example, in actual applications, the prompt signal can be flexibly set to various forms such as voice broadcast, beep or text message, as long as the user can receive it.

[0034] By sending a prompt signal, on the one hand, it can prevent users from forcibly turning on the parking air conditioner manually, further improving safety; on the other hand, it can remind users of the specific reasons why they cannot turn it on, preventing users from misjudging it as an air conditioning failure.

[0035] like Figure 2 As shown, the step of "selectively turning on the parking air conditioner according to the working state and the power" also includes:

[0036] S320: If it is determined that the engine is in a shutdown state, comparing the power level with a third preset power level, wherein the third preset power level is less than the first preset power level;

[0037] S321: Selectively turning on the parking air conditioner according to the comparison result.

[0038] That is, if it is determined that the engine is in a shutdown state, in the second preferred embodiment of the present invention, the battery power at this time will also be determined, because it is possible that the vehicle has consumed a lot of power before shutdown, resulting in the battery power being too low. If the parking air conditioner is turned on, the battery will quickly enter the protection mode.

[0039] Therefore, it is preferred to set the third preset power level to 10%, so as to set a safe power level for the battery to turn on the parking air conditioner when the engine is in the stopped state (usually the parking state), and prohibit the parking air conditioner from starting before the power drops to the protection power of 5%, to prevent the battery from entering the protection mode due to rapid power consumption, thereby avoiding affecting the use of other electrical appliances or even the vehicle being unable to ignite.

[0040] Preferably, if Figure 2 As shown, the step of “selectively turning on the parking air conditioner according to the comparison result” specifically includes:

[0041] S322: If the power level is not less than the third preset power level, turning on the parking air conditioner; and / or

[0042] S323: If the power level is less than the third preset power level, the parking air conditioner is not turned on.

[0043] The third preset power level can be used to calibrate the critical power level of the battery approaching the protection mode when the engine is stopped, and then set a safe power level for the parking air conditioner to be started, preventing the parking air conditioner from being started rashly when the battery power is low and causing the battery to run out of power, thereby preventing the battery from entering the protection mode.

[0044] Preferably, the step of "determining whether the engine is in a started state or a stopped state" specifically includes:

[0045] Get the engine speed;

[0046] comparing the rotation speed with a preset rotation speed;

[0047] If the speed is not less than the preset speed, it is determined that the engine is in the starting state;

[0048] If the speed is less than the preset speed, it is determined that the engine is in a stopped state.

[0049] For example, in actual applications, various sensors (such as speed sensors, intake sensors, voltage sensors or oxygen sensors, etc.) can be used to determine whether the engine is in the start-up state or the stop state. This case does not make specific restrictions. It is preferred to adopt the method of detecting the engine speed, which is simple and easy to implement and the judgment result is accurate and reliable.

[0050] In addition, the parking air conditioner further provided by the present invention on the basis of the above-mentioned control method has the technical effect possessed by the above-mentioned control method due to the adoption of the above-mentioned control method. Compared with the parking air conditioner before the improvement, the parking air conditioner of the present invention sets the start-up conditions so that it can be started and operated more reasonably when the vehicle's engine and battery are in different states, preventing the battery from being powered on or off, ensuring the normal use of other electrical equipment in the vehicle, and helping to extend the service life of the battery.

[0051] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A control method for a parking air conditioner, wherein the parking air conditioner is installed on a vehicle, the vehicle comprises an engine and a battery, the battery can supply power to the parking air conditioner, characterized in that: The control method comprises: Upon receiving a control command to start the parking air conditioner, determining whether the engine is in a started state or a stopped state; Obtaining the power of the battery; The parking air conditioner is selectively turned on according to the judgment result and the power.

2. The control method according to claim 1, characterized in that: The step of "selectively turning on the parking air conditioner according to the judgment result and the power" specifically includes: If it is determined that the engine is in the starting state, comparing the electric quantity with a first preset electric quantity; The parking air conditioner is selectively turned on according to the comparison result.

3. The control method according to claim 2, characterized in that: The step of "selectively turning on the parking air conditioner according to the comparison result" specifically includes: If the power is not less than the first preset power, turning on the parking air conditioner; and / or If the power level is less than the first preset power level, the parking air conditioner is not turned on.

4. The control method according to claim 3, characterized in that: After "turning on the parking air conditioner", the control method of the present invention further includes: If the power level is less than the first preset power level, the parking air conditioner is turned off.

5. The control method according to claim 4, characterized in that: After "turning off the parking air conditioner", the control method of the present invention further includes: If the power level is greater than a second preset power level, turning on the parking air conditioner again; Wherein, the first preset power is less than the second preset power.

6. The control method according to claim 3, characterized in that: In the case where "the electric quantity is less than the first preset electric quantity", the control method of the present invention further includes: Send out a warning signal to remind users not to use the air conditioner.

7. The control method according to claim 2, characterized in that: The step of "selectively turning on the parking air conditioner according to the working state and the power" also includes: If it is determined that the engine is in a stopped state, comparing the power level with a third preset power level, wherein the third preset power level is less than the first preset power level; The parking air conditioner is selectively turned on according to the comparison result.

8. The control method according to claim 7, characterized in that: The step of "selectively turning on the parking air conditioner according to the comparison result" specifically includes: If the power is not less than the third preset power, turning on the parking air conditioner; and / or If the power level is less than the third preset power level, the parking air conditioner is not turned on.

9. The control method according to any one of claims 1 to 8, characterized in that: The step of "determining whether the engine is in a started state or a stopped state" specifically includes: Obtaining the rotation speed of the engine; comparing the rotation speed with a preset rotation speed; If the rotation speed is not less than the preset rotation speed, it is determined that the engine is in the starting state; If the rotation speed is less than the preset rotation speed, it is determined that the engine is in a stopped state.

10. A parking air conditioner, characterized in that: The parking air conditioner includes a controller configured to execute the control method according to any one of claims 1 to 9.

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