WO2019219007A1 - 一种驻车空调控制方法和驻车空调 - Google Patents

一种驻车空调控制方法和驻车空调 Download PDF

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Publication number
WO2019219007A1
WO2019219007A1 PCT/CN2019/086855 CN2019086855W WO2019219007A1 WO 2019219007 A1 WO2019219007 A1 WO 2019219007A1 CN 2019086855 W CN2019086855 W CN 2019086855W WO 2019219007 A1 WO2019219007 A1 WO 2019219007A1
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Prior art keywords
control module
temperature
air conditioner
indoor control
parking air
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PCT/CN2019/086855
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English (en)
French (fr)
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王祯祯
张建雄
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青岛海尔空调器有限总公司
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Publication of WO2019219007A1 publication Critical patent/WO2019219007A1/zh

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression

Definitions

  • the invention relates to the technical field of air conditioning equipment, in particular to a parking air conditioning control method and a parking air conditioner.
  • Parking air conditioners are air conditioners used for parking and rest. They are usually installed on trucks and vans, and drivers can use them during long-distance driving.
  • the traditional parking air conditioner includes the following forms: the first is to drive the compressor through the diesel generator, and further to drive the refrigerant in the sealed refrigeration system through the compressor, the diesel generator uses water as the cooling medium; The same is still driven by a diesel generator to drive the compressor, but using flowing air as the cooling medium; the third is to drive the compressor through the gasoline generator; the fourth is to drive the compressor through the DC power supply.
  • the output power of the air conditioner since it is necessary to comprehensively judge the required temperature of the installation operation and the temperature inside the vehicle, the output power of the air conditioner, especially the compressor output power adjustment value, is corrected, that is, it is required Repeated correction of a variable, so in the outdoor unit, a control module for controlling the output power of the compressor needs to be provided, and a drive module for driving the compressor, the fan and other refrigeration components, an indoor control module and
  • the outdoor control module uses a feedback control method for two-way communication. On the one hand, the control cost of the equipment is increased. On the other hand, due to the unstable operating environment of the parking air conditioner, the control module may need to work in a humid environment for a long time, and the possibility of communication failure is very high. In the event of a communication failure, a complicated process is required in the prior art to determine the point of failure and perform maintenance, and the actual use is not effective.
  • the invention discloses a control method for a parking air conditioner, which aims to improve the endurance capability and practicability of the parking air conditioner.
  • a parking air conditioning control method includes the following steps:
  • the indoor control module samples the ambient temperature of the vehicle
  • the indoor control module determines whether the ambient temperature of the vehicle meets the power-on condition; if the ambient temperature of the vehicle meets the power-on condition, the indoor control module outputs a power-on control signal to the outdoor drive module through the first signal path, and the outdoor drive The module drives the compressor to start;
  • the indoor control module continues to determine the temperature gear interval to which the ambient temperature of the vehicle belongs, and outputs a corresponding gear position control signal to the outdoor drive module through the second signal path, and the outdoor drive module drives the compressor to correspond to the gear position control signal.
  • the indoor control module determines whether the ambient temperature of the vehicle meets the shutdown condition; if the ambient temperature of the vehicle meets the shutdown condition, the indoor control module outputs a shutdown control signal to the outdoor drive module through the first signal path, and the outdoor drive The module drives the compressor to stop.
  • the method further includes the following steps:
  • the indoor control module samples a set temperature and invokes at least one reference temperature
  • the indoor control module calculates a sum of a set temperature and the reference temperature
  • the indoor control module sets the sum value as a lower limit threshold of a higher temperature range of the two consecutive temperature range sections, and sets the sum value as a lower temperature range of the two consecutive temperature range sections The upper threshold of the bit interval.
  • the indoor control module samples the set temperature and invokes a first reference temperature
  • the indoor control module calculates a sum of the set temperature and the first reference temperature
  • the indoor control module sets the sum value as a lower limit threshold of the first temperature range, and is an upper threshold of the second temperature range;
  • the indoor control module When the indoor environment temperature belongs to the first temperature range, the indoor control module outputs a first level signal to the outdoor driving module through the second signal path, and the outdoor driving module drives the compressor according to the first Frequency operation; when the ambient temperature of the vehicle belongs to the second temperature range, the indoor control module outputs a second level signal to the outdoor driving module through the second signal path, and the outdoor driving module drives the compressor according to the Two frequency operation; wherein the first frequency is higher than the second frequency.
  • the first level signal is a high level signal
  • the second level signal is a low level signal
  • the indoor control module samples a set temperature and invokes a second reference temperature
  • the indoor control module calculates a difference between the set temperature and the second reference temperature
  • the indoor control module sets the difference to be a lower threshold of the second temperature range.
  • the indoor control module samples the set temperature and invokes a third reference temperature
  • the indoor control module calculates a difference between the set temperature and the third reference temperature
  • the indoor control module sets a difference between the set temperature and the third reference temperature as a lower threshold of the power-on condition, and sets a difference between the set temperature and a third reference temperature as the shutdown condition Upper threshold
  • the third reference temperature is less than or equal to the second reference temperature.
  • the outdoor driving module receives the power-on control signal
  • the outdoor fan is simultaneously driven to start and operates according to the set speed
  • the indoor control module simultaneously drives the indoor fan to operate according to the set speed
  • the outdoor driving module receives the shutdown control signal, the outdoor fan is simultaneously driven to stop.
  • the first timer in the indoor control module is started, and when the timing parameter of the first timer satisfies the first duration condition, The indoor control module outputs a power-on control signal to the outdoor drive module through the first signal path.
  • the compressor of the parking air conditioner can work in different gear positions according to different working conditions, so that the parking air conditioner has the purpose of fast response speed, energy saving and environmental protection, and improves the endurance capability of the DC power source.
  • the control module is no longer set in the outdoor unit, and the indoor control module and the outdoor drive module are unidirectionally communicated, which greatly reduces the probability of occurrence of communication failure, so that the maintenance cycle and service life of the parking air conditioner are longer, and the utility is more practical. it is good.
  • a parking air conditioner which adopts a parking air conditioner control method, and the parking air conditioner control method comprises the following steps:
  • the indoor control module samples the ambient temperature of the vehicle
  • the indoor control module determines whether the ambient temperature of the vehicle meets the power-on condition; if the ambient temperature of the vehicle meets the power-on condition, the indoor control module outputs a power-on control signal to the outdoor drive module through the first signal path, and the outdoor drive The module drives the compressor to start;
  • the indoor control module continues to determine the temperature gear interval to which the ambient temperature of the vehicle belongs, and outputs a corresponding gear position control signal to the outdoor drive module through the second signal path, and the outdoor drive module drives the compressor to correspond to the gear position control signal.
  • the indoor control module determines whether the ambient temperature of the vehicle meets the shutdown condition; if the ambient temperature of the vehicle meets the shutdown condition, the indoor control module outputs a shutdown control signal to the outdoor drive module through the first signal path, and the outdoor drive The module drives the compressor to stop.
  • the parking air conditioner disclosed by the invention has the advantage of being practical.
  • FIG. 1 is a flow chart of a first embodiment of a parking air conditioner control method according to the present invention
  • FIG. 2 is a flow chart of a second specific embodiment of a parking air conditioning control method according to the present invention.
  • FIG. 3 is a schematic block diagram showing the structure of a parking air conditioner disclosed in the present invention.
  • FIG. 4 is a schematic block diagram showing the structure of an indoor control module of the parking air conditioner disclosed in the present invention.
  • FIG. 5 is a flowchart of another specific embodiment of a parking air conditioning control method according to the present invention.
  • FIG. 6 is a flow chart of still another specific embodiment of the parking air conditioning control method disclosed in the present invention.
  • FIG. 1 is a flow chart of a specific embodiment of a parking air conditioning control method disclosed in the present invention.
  • the parking air conditioner is powered by a 24V DC power supply.
  • the parking air conditioner is turned on, as shown in Figure 1, the control method specifically includes the following steps:
  • step S100 the indoor control module samples the ambient temperature of the vehicle.
  • the temperature sensor for detecting the ambient temperature of the vehicle is preferably disposed on the return air port of the parking air conditioner indoor unit.
  • step S201 the indoor control module determines whether the sampled interior temperature of the vehicle satisfies the power-on condition.
  • the power-on conditions can be set according to the model of the parking air conditioner and the specific working conditions after the vehicle is installed.
  • the indoor control module is an MCU.
  • Step S202 If the sampled interior temperature meets the power-on condition, the indoor control module outputs a power-on control signal to the outdoor drive module through the first signal path.
  • Step S203 the outdoor driving module drives the compressor to start after receiving the power-on control signal.
  • the external driving module may be an IPM (Intelligent Power Module), that is, an intelligent power control module and its peripheral circuits, and may be a similar driving circuit or a driving chip, which is not limited herein.
  • Step S301 after the outdoor driving module drives the compressor to start, the indoor control module further determines a temperature gear interval to which the ambient temperature of the vehicle belongs.
  • the temperature range can be set according to the model of the parking air conditioner and the specific working conditions after the vehicle is installed.
  • Each temperature gear position corresponds to an independent gear position control signal.
  • Step S302 after determining the temperature gear interval to which the vehicle interior temperature belongs, the indoor control module outputs a corresponding gear position control signal to the outdoor drive module through the second signal path.
  • step S303 the outdoor driving module drives the compressor to operate according to the frequency corresponding to the gear position control signal, and maintains the corresponding frequency unchanged.
  • step S401 the indoor control module continues to determine whether the ambient temperature in the vehicle meets the shutdown condition.
  • the shutdown condition can also be set according to the model of the parking air conditioner and the specific working conditions after the vehicle is installed.
  • Step S402 if the shutdown condition is met, the indoor control module outputs a shutdown control signal to the outdoor drive module through the first signal path.
  • Step S403 the outdoor driving module controls the compressor to stop after receiving the shutdown control signal.
  • the compressor of the parking air conditioner can work in different gear positions according to different working conditions, so that the parking air conditioner has the purpose of fast response speed, energy saving and environmental protection, and improves the endurance capability of the DC power source.
  • the control module is no longer set in the outdoor unit, and the indoor control module and the outdoor drive module are unidirectionally communicated, which greatly reduces the probability of occurrence of communication failure, so that the maintenance cycle and service life of the parking air conditioner are longer, and the utility is more practical. it is good.
  • At least one reference temperature is stored in the indoor control module.
  • the reference temperature can be an empirical value, but preferably, the reference temperature can be based on big data calculations based on different vehicle models, different geographic parameters, and usage environment.
  • the indoor control module can call the reference temperature at any time.
  • the user inputs the set temperature to the indoor control module through the human-computer interaction system according to actual needs.
  • the indoor control module sets a plurality of consecutive temperature gear intervals according to the set temperature, and each temperature gear interval corresponds to a corresponding gear control signal.
  • the compressor operating frequency and the temperature range corresponding to the plurality of gear control signals are in a monotonic relationship. That is to say, when the threshold of the temperature range is higher, the compressor operating frequency is higher.
  • the indoor control module calculates the sum of the set temperature and the reference temperature.
  • the indoor control module further sets the sum value to a lower limit threshold of a higher temperature range of the two consecutive temperature range sections, and sets the sum value to a lower temperature range of the two consecutive temperature range sections.
  • Upper threshold is
  • the control method includes the following steps:
  • step S400 the indoor control module samples the set temperature and invokes the first reference temperature.
  • step S401 the indoor control module calculates a sum of the set temperature and the first reference temperature.
  • Step S402 the indoor control module sets the sum value as a lower limit threshold value of the first temperature gear position interval, and sets the sum value as an upper limit threshold value of the second temperature gear position interval. That is to say, if the indoor environment temperature is higher than the lower limit threshold of the first temperature range, it belongs to the first temperature range. And if the ambient temperature of the vehicle is lower than the upper threshold of the second temperature range and meets the power-on condition, it belongs to the second temperature range. In this way, since the set temperature is set according to the user's use requirement, the first temperature range and the second temperature range are also changed according to the user's use requirements, and therefore, the operating state of the compressor Close contact with user needs, parking air conditioning can quickly respond to user needs and achieve good cooling results.
  • the control method further includes: step S502, the indoor control module further calls the second reference temperature. Wherein the second reference temperature is less than the first reference temperature.
  • Step S504 the indoor control module calculates a difference between the set temperature and the second reference temperature, and in step S506, sets the difference to be a lower threshold of the second temperature range. If the indoor environment temperature is lower than the upper limit threshold of the second temperature range and higher than the lower threshold of the second temperature range, the second temperature range is included. Independently setting the lower limit threshold of the second temperature range can reduce the influence caused by the deviation of the internal temperature detection accuracy of the vehicle and avoid the occurrence of false stoppage of the compressor.
  • control method further includes:
  • step S4031 the indoor control module determines that the interior temperature of the vehicle belongs to the first temperature range.
  • Step S4041 the indoor control module outputs the first level signal to the outdoor driving module through the second signal path.
  • the first level signal is a high level signal.
  • Step S4051 After receiving the high level signal through the second signal path, the input port of the outdoor driving module drives the compressor to operate according to the first frequency, that is, operates in the high frequency gear position.
  • step S4032 the indoor control module determines that the in-vehicle ambient temperature belongs to the second temperature range.
  • Step S4042 the indoor control module outputs the second level signal to the outdoor driving module through the second signal path.
  • the second level signal is a low level signal.
  • Step S4052 After receiving the low level signal through the second signal path, the input port of the outdoor driving module drives the compressor to operate according to the second frequency, and the second frequency is smaller than the first frequency, that is, operates in the low frequency position.
  • the indoor control module calls a plurality of reference temperatures, a temperature range with more gradients can be formed.
  • the indoor control module determines that the ambient temperature of the vehicle falls into any one of the temperature range, the independent gear control signal is output through the independent signal path, and the compressor is controlled to operate according to the corresponding frequency. In this way, a more precise control of the compressor can be achieved.
  • control method further comprises the following steps:
  • Step S602 the indoor control module samples the set temperature and invokes the third reference temperature.
  • Step S604 the indoor control module calculates a difference between the set temperature and the third reference temperature.
  • Step S606 the indoor control module sets the difference between the set temperature and the third reference temperature as the lower limit threshold of the power-on condition, and sets the difference between the set temperature and the third reference temperature as the upper limit threshold of the shutdown condition. That is to say, when the indoor environment temperature is greater than the lower limit threshold of the power-on condition, the indoor control module outputs a power-on control signal to the outdoor drive module through the first signal path, and the outdoor drive module drives the compressor to start. When the ambient temperature of the vehicle is less than the upper limit threshold of the shutdown condition, the indoor control module outputs a shutdown control signal through the second signal path, and the outdoor drive module drives the compressor to stop.
  • the third reference temperature is less than the second reference temperature, and the margin of the determination condition is large to avoid false start or false stoppage caused by the internal temperature detection error of the vehicle. If the accuracy of the ambient temperature detection in the vehicle is high, the second reference temperature and the third reference temperature may be set equal.
  • the first reference temperature is 5 degrees Celsius and the second reference temperature is 3 degrees Celsius.
  • the outdoor driving module receives the power-on control signal
  • the outdoor fan is driven to start and operates according to the set speed
  • the indoor control module simultaneously drives the indoor fan to operate according to the set speed.
  • the outdoor drive module receives the stop control signal
  • the outdoor fan is driven to stop at the same time, and the indoor control module drives the indoor fan to keep running according to the set speed, while maintaining energy comfort while maintaining the interior comfort.
  • the first timer 10-5 in the indoor control module is activated.
  • the indoor control module outputs the power-on control signal to the outdoor driving module through the first signal path.
  • the first duration condition is 60 seconds.
  • the parking air conditioner since the parking air conditioner adopts 24V DC power supply, it is usually used for power supply of the battery.
  • the above control method can make the compressor start and stop according to the user demand corresponding to the set temperature, or work differently.
  • the frequency gear position effectively reduces the energy consumption of the compressor; on the other hand, the internal structure of the outdoor unit is simplified, the control board of the outdoor unit is no longer set, the two-way communication is simplified to one-way communication, and the probability of communication failure is reduced.
  • the invention also discloses a parking air conditioner, which adopts a parking air conditioner control method as disclosed in the above.
  • a parking air conditioner control method as disclosed in the above.
  • the parking air conditioner specifically includes an indoor control module 10 and an outdoor drive module 20.
  • the two input terminals of the indoor control module 10 respectively receive the detected values of the ambient temperature in the vehicle and the set temperature.
  • At least one output end of the indoor control module 10 outputs an indoor fan control signal, a speed control signal, and the like to the indoor fan 50.
  • the indoor control module 10 and the outdoor drive module 20 communicate one-way communication, and the indoor control module 10 outputs a power-on control signal and/or a shutdown control signal to the outdoor drive module 20 through the first signal path 10-3, and the outdoor drive module 20 drives the compressor. 30 perform the corresponding work.
  • the indoor control module 10 outputs a gear position control signal to the outdoor drive module 20 through the second signal path 10-4, and the outdoor drive module 20 drives the compressor 30 to operate according to the frequency corresponding to the gear position.
  • the outdoor drive module 20 also drives the operation of the outdoor fan 40.
  • Power supply paths 10-1, 10-2 are also disposed between the indoor control module 10 and the outdoor drive module 20.
  • the first signal path and the second signal path are independently set to ensure the signal transmission rate on the one hand, and to locate the fault point on the other hand, which is beneficial to the subsequent maintenance of the parking air conditioner.

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

Abstract

一种驻车空调控制方法，包括以下步骤：室内控制模块采样车内环境温度（S100）；室内控制模块判定车内环境温度是否满足开机条件（S201）；若满足则室内控制模块通过第一信号通路输出开机控制信号至室外驱动模块（S202），室外驱动模块驱动压缩机启动（S203）；室内控制模块继续判定车内环境温度所属的温度档位区间（S301），并通过第二信号通路输出对应的档位控制信号至室外驱动模块（S302），驱动压缩机按照档位控制信号对应的频率工作（S303）；室内控制模块判定车内环境温度是否满足停机条件（S401）；若满足则室内控制模块通过第一信号通路输出停机控制信号至室外驱动模块（S402），室外驱动模块驱动压缩机停机（S403）。还公开了一种驻车空调。这样的驻车空调控制方法和驻车空调提高了驻车空调的续航能力，降低出现通信故障的概率，提高了驻车空调的实用性。

Description

一种驻车空调控制方法和驻车空调 技术领域
本发明涉及空气调节设备技术领域，尤其涉及一种驻车空调控制方法和驻车空调。
背景技术
驻车空调是指停车等候及休息时使用的空调，通常安装在卡车和厢式货车上，司机可以在长途驾驶中使用。传统的驻车空调包括以下几种形式：第一种是通过柴油发电机驱动压缩机运行，进一步通过压缩机驱动制冷剂在密封的制冷系统中循环，柴油发电机采用水作为冷却介质；第二种同样还是通过柴油发电机驱动压缩机运行，但是采用流动的空气作为冷却介质；第三种是通过汽油发电机驱动压缩机运行；第四种通过直流电源驱动压缩机运行。
不难看出，在前三种方式中，均需要燃油作为动力来源，因此，运行的驻车空调将会明显增加车辆的油耗。而且，无论是用水作为冷却介质还是用空气作为冷却介质，发电机本身的使用寿命均很难满足实际使用需要，维护成本较高。如果疏于维护，还会造成发电机不可逆的损坏。而采用直流电源作为动力来源可以有效地解决上述问题，中国专利申请《一种汽车及其驻车空调系统》(授权公告号CN206374503U)中公开了一种汽车的驻车空调系统，驻车空调系统“包括设置于车体上，由独立于发动机之外的能源所驱动且用于对车内环境进行温度调节的空调装置。”上述专利申请进一步公开了以下技术内容，参见说明书第[0031]段“还增加了温度检测模块…用于检测车内环境温度，从而结合设置操作的所需温度与车内温度进行综合判断，进而对空调装置的输出功率调节值进行修正。”
在上述专利所公开的技术方案中，由于需要结合设置操作的所需温度与车内温度进行综合判断，进而对空调装置的输出功率，尤其是压缩机输出功率调节值进行修正，也就是说需要对一个变量进行反复修正，所以在室外机中需要设置一个用于控制压缩机输出功率的控制模块，还需要设置一个用于驱动压缩机、风机及其它制冷元件的驱动模块，室内的控制模块和室外的控制模块采用双向通信的反馈控制方式。一方面增加了设备的控制成本，另一方面，由于驻车空调的运行环境不稳定，控制模块可能需要长期工作在潮湿的环境中，发生通信故障的可能性非常高。而一旦发生通信故障，现有技术 中需要一个复杂的流程才能确定故障点并进行维修，实际使用的效果不佳。
发明内容
本发明公开了一种驻车空调的控制方法，旨在提高驻车空调的续航能力和实用性。
一种驻车空调控制方法，包括以下步骤：
室内控制模块采样车内环境温度；
室内控制模块判定所述车内环境温度是否满足开机条件；若所述车内环境温度满足所述开机条件，则所述室内控制模块通过第一信号通路输出开机控制信号至室外驱动模块，室外驱动模块驱动压缩机启动；
室内控制模块继续判定所述车内环境温度所属的温度档位区间，并通过第二信号通路输出对应的档位控制信号至室外驱动模块，室外驱动模块驱动压缩机按照所述档位控制信号对应的频率工作；
室内控制模块判定所述车内环境温度是否满足停机条件；若所述车内环境温度满足所述停机条件，则所述室内控制模块通过第一信号通路输出停机控制信号至室外驱动模块，室外驱动模块驱动压缩机停机。
进一步的，还包括以下步骤：
所述室内控制模块采样设定温度并调用至少一个参考温度；
所述室内控制模块计算设定温度和所述参考温度的和值；
所述室内控制模块设定所述和值为连续两个温度档位区间中较高温度档位区间的下限阈值，并设定所述和值为连续两个温度档位区间中较低温度档位区间的上限阈值。
更进一步的，所述室内控制模块采样所述设定温度并调用第一参考温度；
所述室内控制模块计算所述设定温度和所述第一参考温度的和值；
所述室内控制模块设定所述和值为第一温度档位区间的下限阈值，为第二温度档位区间的上限阈值；
当所述车内环境温度属于所述第一温度档位区间时，所述室内控制模块通过第二信号通路输出第一电平信号至室外驱动模块，所述室外驱动模块驱动压缩机按照第一频率工作；当所述车内环境温度属于第二温度档位区间时，所述室内控制模块通过第二信号通路输出第二电平信号至室外驱动模 块，所述室外驱动模块驱动压缩机按照第二频率工作；其中所述第一频率高于第二频率。
优选的，所述第一电平信号为高电平信号，所述第二电平信号为低电平信号。
更进一步的，还包括以下步骤：
所述室内控制模块采样设定温度并调用第二参考温度；
所述室内控制模块计算所述设定温度和所述第二参考温度的差值；
所述室内控制模块设定所述差值为所述第二温度档位区间的下限阈值。
更进一步的，还包括以下步骤：
所述室内控制模块采样设定温度并调用第三参考温度；
所述室内控制模块计算所述设定温度和所述第三参考温度的差值；
所述室内控制模块设定所述设定温度和第三参考温度的差值为所述开机条件的下限阈值，并设定所述设定温度和第三参考温度的差值为所述停机条件的上限阈值；
所述第三参考温度小于等于第二参考温度。
更进一步的，当所述室外驱动模块接收所述开机控制信号时，同时驱动室外风机启动并按照设定速度运行；室内控制模块同时驱动室内风机按照设定速度运行。
为保证空调的舒适性，当所述室外驱动模块接收所述停机控制信号时，同时驱动室外风机停机。
为保护压缩机，若所述车内环境温度满足所述开机条件，则所述室内控制模块中的第一计时器启动，当所述第一计时器的计时参数满足第一时长条件时，所述室内控制模块通过第一信号通路输出开机控制信号至室外驱动模块。
通过本发明所公开的驻车空调控制方法，驻车空调的压缩机可以根据不同工况工作在不同档位，使得驻车空调兼具响应速度快和节能环保的目的，提高直流电源的续航能力，同时，在室外机中不再设置控制模块，室内控制模块和室外驱动模块单向通信，大幅度降低了通信故障的发生概率，使得驻车空调的维修周期和使用寿命更长，实用性更好。
同时还公开一种驻车空调，采用驻车空调控制方法，驻车空调控制方法包括以下步骤：
室内控制模块采样车内环境温度；
室内控制模块判定所述车内环境温度是否满足开机条件；若所述车内环境温度满足所述开机条件，则所述室内控制模块通过第一信号通路输出开机控制信号至室外驱动模块，室外驱动模块驱动压缩机启动；
室内控制模块继续判定所述车内环境温度所属的温度档位区间，并通过第二信号通路输出对应的档位控制信号至室外驱动模块，室外驱动模块驱动压缩机按照所述档位控制信号对应的频率工作；
室内控制模块判定所述车内环境温度是否满足停机条件；若所述车内环境温度满足所述停机条件，则所述室内控制模块通过第一信号通路输出停机控制信号至室外驱动模块，室外驱动模块驱动压缩机停机。
本发明所公开的驻车空调具有实用性好的优点。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明所公开的驻车空调控制方法第一种具体实施例的流程图；
图2为本发明所公开的驻车空调控制方法第二种具体实施例的流程图；
图3为本发明所公开的驻车空调的结构示意框图；
图4为本发明所公开的驻车空调的室内控制模块的结构示意框图；
图5为本发明所公开的驻车空调控制方法另一种具体实施例的流程图；
图6为本发明所公开的驻车空调控制方法又一种具体实施例的流程图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
如图1所示为本发明所公开的驻车空调控制方法一种具体实施例的流程图。驻车空调采用24V直流电源供电。驻车空调开机，如图1所示，控制方 法具体包括以下步骤：
步骤S100，室内控制模块采样车内环境温度。用于检测车内环境温度的温度传感器优选设置在驻车空调室内机的回风口上。
步骤S201，室内控制模块判定采样到的车内环境温度是否满足开机条件。开机条件可以根据驻车空调的型号，以及在车辆上安装完毕后的具体工况进行设置。其中，室内控制模块为一颗MCU。
步骤S202，如果采样到的车内环境温度满足开机条件，则室内控制模块通过第一信号通路输出开机控制信号至室外驱动模块。
步骤S203，室外驱动模块在接收到开机控制信号后，驱动压缩机启动。室外驱动模块可以是IPM(Intelligent Power Module)，即智能功率控制模块及其外围电路，也可以是类似的驱动电路或驱动芯片，在此不作限定。
步骤S301，室外驱动模块驱动压缩机启动后，室内控制模块进一步判定车内环境温度所属的温度档位区间。温度档位区间可以根据驻车空调的型号，以及在车辆上安装完毕后的具体工况进行设置。每一个温度档位区间对应一个独立的档位控制信号，当室外驱动模块接收到来自室内控制模块的档位控制信号后，自动驱动压缩机按照档位控制信号对应的频率运行。
步骤S302，在判定出车内环境温度所属的温度档位区间后，室内控制模块通过第二信号通路输出对应的档位控制信号至室外驱动模块。
步骤S303，室外驱动模块驱动压缩机按照档位控制信号对应的频率工作，并维持在对应的频率保持不变。
步骤S401，室内控制模块继续判定车内环境温度是否满足停机条件。类似的，停机条件也可以根据驻车空调的型号，以及在车辆上安装完毕后的具体工况进行设定。
步骤S402，如果满足停机条件，室内控制模块通过第一信号通路输出停机控制信号至室外驱动模块。
步骤S403，室外驱动模块在接收到停机控制信号后，控制压缩机停机。
通过本发明所公开的驻车空调控制方法，驻车空调的压缩机可以根据不同工况工作在不同档位，使得驻车空调兼具响应速度快和节能环保的目的，提高直流电源的续航能力，同时，在室外机中不再设置控制模块，室内控制模块和室外驱动模块单向通信，大幅度降低了通信故障的发生概率，使得驻车空调的维修周期和使用寿命更长，实用性更好。
为了适应不同工况和用户的实际需求，优化驻车空调压缩机启停和工作档位，以下介绍一种优选的设定温度档位区间的方法。
具体来说，在室内控制模块中存储有至少一个参考温度。参考温度可以是一个经验值，但优选的，参考温度可以基于大数据根据不同车型、不同地理参数及使用环境的运算得到。室内控制模块可以随时调用所述参考温度。
用户根据实际需要通过人机交互系统输入设定温度至室内控制模块。室内控制模块根据设定温度设定多个连续的温度档位区间，每一个温度档位区间和一个对应的档位控制信号对应。多个档位控制信号对应的压缩机运行频率和温度档位区间是一个单调关系。也就是说，当温度档位区间的阈值越高时，压缩机运行频率越高。
室内控制模块计算设定温度和参考温度的和值。室内控制模块进一步将和值设定为连续两个温度档位区间中较高温度档位区间的下限阈值，并设定所述和值为连续两个温度档位区间中较低温度档位区间的上限阈值。
如图2所示，以设定两个温度档位区间为例，具体来说，控制方法包括以下步骤：
步骤S400，室内控制模块采样设定温度并调用第一参考温度。
步骤S401，室内控制模块计算设定温度和第一参考温度的和值。
步骤S402，室内控制模块设定所述和值为第一温度档位区间的下限阈值，并设定所述和值为第二温度档位区间的上限阈值。也就是说，如果所述车内环境温度高于第一温度档位区间的下限阈值，则属于第一温度档位区间。而如果所述车内环境温度低于第二温度档位区间的上限阈值且满足开机条件，则属于第二温度档位区间。通过这种方式，由于设定温度是根据用户的使用需求设定的，所以第一温度档位区间，第二温度档位区间也是根据用户的使用需求而变化的，因此，压缩机的运行状态与用户需求形成密切的联系，驻车空调可以快速响应用户需求，实现良好的制冷效果。
为了实现更精确的压缩机控制，参见图5，控制方法还包括：步骤S502，室内控制模块还调用第二参考温度。其中，第二参考温度小于第一参考温度。步骤S504，室内控制模块计算设定温度和第二参考温度的差值，步骤S506，设定所述差值为第二温度档位区间的下限阈值。如果所述车内环境温度低于第二温度档位区间的上限阈值且高于所述第二温度档位区间的下限阈值时，则属于第二温度档位区间。独立设置第二温度档位区间的下限阈值，可以降 低由于车内环境温度检测精度偏差所造成的影响，避免压缩机出现误停机的情况。
继续参见图2，控制方法还包括：
步骤S4031，室内控制模块判定所述车内环境温度属于第一温度档位区间。
步骤S4041，室内控制模块通过第二信号通路输出第一电平信号至室外驱动模块。优选的，第一电平信号为高电平信号。
步骤S4051，室外驱动模块的输入端口通过第二信号通路接收到高电平信号后，驱动压缩机按照第一频率工作，即工作在高频档位。
类似的，在步骤S4032中，室内控制模块判定所述车内环境温度属于第二温度档位区间。
步骤S4042，室内控制模块通过第二信号通路输出第二电平信号至室外驱动模块。优选的，第二电平信号为低电平信号。
步骤S4052，室外驱动模块的输入端口通过第二信号通路接收到低电平信号后，驱动压缩机按照第二频率工作，第二频率小于第一频率，即工作在低频档位。
可以理解的是，如果室内控制模块调用多个参考温度，则可以形成具有更多梯度的温度档位区间。当室内控制模块判定车内环境温度落入其中任意一个温度档位区间时，则通过独立的信号通路输出独立的档位控制信号，控制压缩机按照对应的频率运行。这样，可以实现对压缩机更为精确地控制。
为了实现对压缩机启停的精确控制，参见图6，控制方法还包括以下步骤：
步骤S602，室内控制模块采样设定温度并调用第三参考温度。
步骤S604，室内控制模块计算设定温度和第三参考温度的差值。
步骤S606，室内控制模块将设定温度和第三参考温度的差值设定为开机条件的下限阈值，并将设定温度和第三参考温度的差值设定为停机条件的上限阈值。也就是说，当车内环境温度大于开机条件的下限阈值时，室内控制模块通过第一信号通路输出开机控制信号至室外驱动模块，室外驱动模块驱动压缩机启动。当车内环境温度小于停机条件的上限阈值时，室内控制模块通过第二信号通路输出停机控制信号，室外驱动模块驱动压缩机停机。优选的，第三参考温度小于第二参考温度，判定条件的余量较大，以避免车内 环境温度检测误差造成误启动或误停机。如果车内环境温度检测精度较高，也可以设定第二参考温度和第三参考温度相等。可选的，第一参考温度为5摄氏度，第二参考温度为3摄氏度。
为了提高驻车空调的使用舒适性，室外驱动模块接收开机控制信号时，同时驱动室外风机启动并按照设定速度运行，室内控制模块同时驱动室内风机按照设定速度运行。当室外驱动模块接收停机控制信号时，同时驱动室外风机停机，室内控制模块驱动室内风机保持按照设定速度运行，在节能的同时保持车内的舒适性。
为形成对压缩机的保护，优选的，如果车内环境温度满足开机条件，则室内控制模块中的第一计时器10-5启动。当第一计时器10-5的计时参数满足第一时长条件时，室内控制模块通过第一信号通路输出开机控制信号至室外驱动模块。优选的，第一时长条件为60秒。
与普通分体式空调不同，由于驻车空调采用24V的直流电源，通常为蓄电池进行供电，采用上述的控制方式，一方面可以使得压缩机根据设定温度对应的用户需求启停，或工作在不同的频率档位，有效地降低压缩机的能耗；另一方面简化了室外机的内部结构，不再设置室外机的控制板，将双向通信简化为单向通信，降低出现通信故障的概率，提高驻车空调的响应速率，使其具有更好的用户体验。在整个运行过程中，无需启动车辆的发动机，同时避免了增加车辆油耗。
本发明同时公开了一种驻车空调，采用如以上具体公开的驻车空调控制方法。驻车空调控制方法的具体步骤参见上述实施例的详细描述和说明书附图的详细描绘，在此不再赘述。采用上述控制方法的驻车空调可以实现同样的技术效果。
如图3和图4所示，驻车空调具体包括室内控制模块10和室外驱动模块20。室内控制模块10的两个输入端分别接收车内环境温度的检测值以及设定温度。室内控制模块10的至少一个输出端输出室内风机控制信号、调速信号等至室内风机50。室内控制模块10和室外驱动模块20之间单向通信，室内控制模块10通过第一信号通路10-3输出开机控制信号和/或停机控制信号至室外驱动模块20，室外驱动模块20驱动压缩机30执行相应的工作。室内控制模块10通过第二信号通路10-4输出档位控制信号至室外驱动模块20，室外驱动模块20驱动压缩机30按照档位对应的频率动作。室外驱动模 块20还驱动室外风机40的运行。室内控制模块10和室外驱动模块20之间还设置有电源通路10-1，10-2。独立设置的第一信号通路和第二信号通路，一方面可以确保信号的传输速率，另一方面便于定位故障点，利于驻车空调的后续维护。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (10)

  1. 一种驻车空调控制方法，包括以下步骤：
    室内控制模块采样车内环境温度；
    室内控制模块判定所述车内环境温度是否满足开机条件；若所述车内环境温度满足所述开机条件，则所述室内控制模块通过第一信号通路输出开机控制信号至室外驱动模块，室外驱动模块驱动压缩机启动；
    室内控制模块继续判定所述车内环境温度所属的温度档位区间，并通过第二信号通路输出对应的档位控制信号至室外驱动模块，室外驱动模块驱动压缩机按照所述档位控制信号对应的频率工作；
    室内控制模块判定所述车内环境温度是否满足停机条件；若所述车内环境温度满足所述停机条件，则所述室内控制模块通过第一信号通路输出停机控制信号至室外驱动模块，室外驱动模块驱动压缩机停机。
  2. 根据权利要求1所述的驻车空调控制方法，还包括以下步骤：
    所述室内控制模块采样设定温度并调用至少一个参考温度；
    所述室内控制模块计算设定温度和所述参考温度的和值；
    所述室内控制模块设定所述和值为连续两个温度档位区间中较高温度档位区间的下限阈值，并设定所述和值为连续两个温度档位区间中较低温度档位区间的上限阈值。
  3. 根据权利要求2所述的驻车空调控制方法，其中：
    所述室内控制模块采样所述设定温度并调用第一参考温度；
    所述室内控制模块计算所述设定温度和所述第一参考温度的和值；
    所述室内控制模块设定所述和值为第一温度档位区间的下限阈值，为第二温度档位区间的上限阈值；
    当所述车内环境温度属于所述第一温度档位区间时，所述室内控制模块通过第二信号通路输出第一电平信号至室外驱动模块，所述室外驱动模块驱动压缩机按照第一频率工作；当所述车内环境温度属于第二温度档位区间时，所述室内控制模块通过第二信号通路输出第二电平信号至室外驱动模块，所述室外驱动模块驱动压缩机按照第二频率工作；其中所述第一频率高于第二频率。
  4. 根据权利要求3所述的驻车空调控制方法，其中，所述第一电平信号为高电平信号，所述第二电平信号为低电平信号。
  5. 根据权利要求4所述的驻车空调控制方法，还包括以下步骤：
    所述室内控制模块采样设定温度并调用第二参考温度；
    所述室内控制模块计算所述设定温度和所述第二参考温度的差值；
    所述室内控制模块设定所述差值为所述第二温度档位区间的下限阈值。
  6. 根据权利要求5所述的驻车空调控制方法，还包括以下步骤：
    所述室内控制模块采样设定温度并调用第三参考温度；
    所述室内控制模块计算所述设定温度和所述第三参考温度的差值；
    所述室内控制模块设定所述设定温度和第三参考温度的差值为所述开机条件的下限阈值，并设定所述设定温度和第三参考温度的差值为所述停机条件的上限阈值；
    所述第三参考温度小于等于第二参考温度。
  7. 根据权利要求6所述的驻车空调控制方法，其中，当所述室外驱动模块接收所述开机控制信号时，同时驱动室外风机启动并按照设定速度运行；室内控制模块同时驱动室内风机按照设定速度运行。
  8. 根据权利要求7所述的驻车空调控制方法，其中，当所述室外驱动模块接收所述停机控制信号时，同时驱动室外风机停机。
  9. 根据权利要求8所述的驻车空调控制方法，其中，若所述车内环境温度满足所述开机条件，则所述室内控制模块中的第一计时器启动，当所述第一计时器的计时参数满足第一时长条件时，所述室内控制模块通过第一信号通路输出开机控制信号至室外驱动模块。
  10. 一种驻车空调，其中，所述驻车空调采用如权利要求1至9任一项所述的驻车空调控制方法。
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