Air conditioner control method, controller, storage medium, air conditioner system and vehicle

Abstract

The invention discloses an air conditioner control method, a controller, a storage medium, an air conditioner system and a vehicle. The air conditioner control method comprises the steps that the indoor heat exchanger temperature and compressor power of an air conditioner are obtained; determining a target temperature adjustment demand of a temperature adjustment space of the air conditioner according to the indoor heat exchanger temperature and the compressor power; and controlling the rotating speed of the compressor according to the target temperature-adjusting demand. By adopting the method, the temperature in the vehicle can be regulated and controlled in time when the ambient temperature sensor or the connecting wire harness in and out of the vehicle breaks down, the problems of degradation and failure of the temperature regulation function of the air conditioner are avoided, and the production cost is low.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to an air-conditioning control method, a controller, a storage medium, an air-conditioning system and a vehicle. Background Art

[0002] Related technology, the existing air-conditioning temperature automatic adjustment method is to collect the indoor temperature and the outdoor ambient temperature by installing relevant temperature sensors, and the air-conditioning controller inputs the indoor temperature and the outdoor ambient temperature into the control algorithm to output the air-conditioning control amount to achieve the control of the indoor temperature, that is, the indoor temperature and the outdoor ambient temperature are compared with the user-set temperature to obtain the temperature deviation, and then the cooling power of the compressor and the speed of the blower are adjusted according to the temperature deviation to achieve the control of the indoor temperature. However, the air-conditioning controller in the above method has high resource requirements, and the vehicle needs to be installed with indoor and outdoor temperature sensors, which increases the cost. In addition, when the indoor and outdoor temperature sensors or the wiring harnesses connecting the sensors fail, the indoor temperature or the outdoor ambient temperature cannot be correctly obtained, so that the indoor temperature cannot be adjusted in time, and it may even cause the air-conditioning temperature adjustment function to be degraded or fail. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the first object of the present invention is to provide an air conditioning control method, which can timely adjust the temperature inside the vehicle when the indoor and outdoor temperature sensors or the connection wiring harnesses fail, avoid the degradation and failure of the air conditioning temperature adjustment function, and does not rely on the indoor and outdoor environment sensors.

[0004] A second objective of the present invention is to provide a controller.

[0005] A third objective of the present invention is to provide a non-volatile readable storage medium.

[0006] A fourth object of the present invention is to provide an air conditioning system.

[0007] A fifth object of the present invention is to provide a vehicle.

[0008] In order to solve the above problems, an embodiment of the first aspect of the present invention provides an air conditioning control method, including: obtaining the indoor heat exchanger temperature and compressor power of the air conditioner; determining the target temperature control requirement of the temperature control space of the air conditioner according to the indoor heat exchanger temperature and the compressor power; and controlling the compressor speed according to the target temperature control requirement.

[0009] According to the air-conditioning control method of an embodiment of the present invention, based on the relationship between the temperature control demand of the temperature control space and the target temperature of the indoor heat exchanger, the compressor speed is controlled according to the temperature control demand to change the heat exchange capacity of the indoor heat exchanger to adjust the temperature of the temperature control space, so that the temperature of the temperature control space where the air conditioner is located meets the target temperature control demand. Therefore, in this application, the target temperature control demand is obtained to indirectly realize the automatic adjustment of the temperature of the temperature control space, so that the temperature of the temperature control space where the air conditioner is located meets the target temperature control demand, and there is no need to set an indoor or outdoor ambient temperature sensor to collect the indoor temperature and the outdoor ambient temperature, which can reduce costs, and when the indoor or outdoor ambient temperature sensors or the connecting wiring harnesses fail, the indoor temperature can be timely adjusted to avoid degradation and failure of the air-conditioning temperature adjustment function.

[0010] In some embodiments, the target temperature control requirement is calculated based on a temperature conversion model, and the temperature conversion model uses the temperature change rate of the indoor heat exchanger temperature within a first preset time and the compressor power as input quantities.

[0011] In some embodiments, the temperature conversion model is expressed as:

[0012]

[0013] β is a conversion coefficient between the temperature change rate and the temperature change rate of the temperature adjustment space within the first preset time.

[0014] In some embodiments, during the first preset time, the compressor of the air conditioner operates at a preset target speed.

[0015] In some embodiments, the target temperature adjustment requirement is calculated periodically every second preset time.

[0016] In some embodiments, the cycle time of each cycle includes multiple first preset times; the target temperature control requirement of each cycle is an average value of multiple temperature control requirements of the temperature control space calculated within multiple first preset times of the cycle time.

[0017] In some embodiments, controlling the compressor speed according to the target temperature control requirement includes: obtaining an indoor heat exchanger target temperature according to the target temperature control requirement; and controlling the compressor speed according to the indoor heat exchanger target temperature.

[0018] In some embodiments, the indoor heat exchanger target temperature is obtained by querying a mapping relationship according to the target temperature adjustment demand, wherein the mapping relationship is a relationship satisfied between the temperature adjustment demand and the indoor heat exchanger temperature.

[0019] In some embodiments, the mapping relationship is expressed as: the greater the temperature adjustment requirement, the smaller the temperature of the indoor heat exchanger, or the smaller the temperature adjustment requirement, the greater the temperature of the indoor heat exchanger.

[0020] In some embodiments, the compressor speed is controlled according to the indoor heat exchanger target temperature, including: under cooling conditions, when the actual temperature of the indoor heat exchanger is greater than the indoor heat exchanger target temperature, increasing the compressor speed; or, when the actual temperature of the indoor heat exchanger is less than the indoor heat exchanger target temperature, reducing the compressor speed.

[0021] In some embodiments, the air conditioning control method further includes: before obtaining the indoor heat exchanger temperature and compressor power of the air conditioner, detecting that a temperature detection signal of a temperature sensor used to detect the ambient temperature inside and outside the temperature adjustment space is abnormal.

[0022] A second aspect of the present invention provides a controller, comprising: a processor; a memory connected to the processor in communication; the memory stores a computer program executable by the processor, and the processor implements the air conditioning control method described in the above embodiment when executing the computer program.

[0023] According to the controller of the embodiment of the present invention, by executing the air conditioning control method described in the above embodiment, the temperature inside the vehicle can be adjusted in time when the temperature sensors inside and outside the vehicle or the connecting wiring harness fail, thereby avoiding the degradation and failure of the air conditioning temperature adjustment function, and the production cost is relatively low.

[0024] A third aspect of the present invention provides a non-volatile readable storage medium having a computer program stored thereon, wherein the computer program, when executed, implements the air conditioning control method described in the above embodiment.

[0025] A fourth aspect of the present invention provides an air-conditioning system, comprising: an indoor heat exchanger and a compressor; a first temperature sensor for detecting the temperature of the indoor heat exchanger; and the controller described in the above embodiment, wherein the controller is connected to the first temperature sensor.

[0026] According to the air-conditioning system of the embodiment of the present invention, through the air-conditioning system of the above embodiment, the temperature inside the vehicle can be timely regulated when the temperature sensors inside and outside the vehicle or the connecting wiring harnesses fail, thereby avoiding the degradation and failure of the air-conditioning temperature regulation function, and the production cost is relatively low.

[0027] A fifth aspect of the present invention provides a vehicle, comprising the air conditioning system described in the above embodiment.

[0028] According to the vehicle of the embodiment of the present invention, through the air-conditioning system of the above embodiment, the temperature inside the vehicle can be timely regulated when the temperature sensors inside and outside the vehicle or the connecting wiring harnesses fail, thereby avoiding the degradation and failure of the air-conditioning temperature regulation function, and the production cost is relatively low.

[0029] In some embodiments, the controller of the air-conditioning system is a vehicle controller or a domain controller of the vehicle.

[0030] In some embodiments, the vehicle further includes: a second temperature sensor for detecting the ambient temperature inside the vehicle; and a third temperature sensor for detecting the ambient temperature outside the vehicle.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0033] Figure 1 is a flow chart of an air conditioning control method according to an embodiment of the present invention;

[0034] Figure 2 is a schematic diagram of air conditioning temperature adjustment according to an embodiment of the present invention;

[0035] Figure 3 is a flow chart of an air conditioning control method according to another embodiment of the present invention;

[0036] Figure 4 is a flow chart of an air conditioning control method according to another embodiment of the present invention;

[0037] Figure 5 is a structural block diagram of a controller according to an embodiment of the present invention;

[0038] Figure 6 is a structural block diagram of an air conditioning system according to an embodiment of the present invention;

[0039] Figure 7 is a structural block diagram of a vehicle according to an embodiment of the present invention.

[0040] Reference numerals:

[0041] Vehicle 100; controller 10; air conditioning system 20;

[0042] Processor 1; memory 2; first temperature sensor 3. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0044] In order to solve the above problems, an embodiment of the first aspect of the present invention provides an air-conditioning control method. This method can avoid the problem of inability to timely control the temperature inside the vehicle or degradation and failure of the air-conditioning temperature adjustment function due to failure of the indoor and outdoor temperature sensors or connecting wiring harnesses, and the production cost is low.

[0045] Reference below Figure 1 The air conditioning control method according to the embodiment of the present invention is described as follows: Figure 1 The method comprises: steps S1 to S4.

[0046] Step S1, obtaining the indoor heat exchanger temperature and compressor power of the air conditioner.

[0047] Specifically, a temperature sensor is installed on the indoor heat exchanger to collect the temperature of the indoor heat exchanger, and the temperature of the indoor heat exchanger is transmitted to the controller, thereby obtaining the temperature of the indoor heat exchanger, and the controller obtains the compressor power.

[0048] Step S2, determining a target temperature adjustment requirement of the temperature adjustment space of the air conditioner according to the indoor heat exchanger temperature and the compressor power.

[0049] Specifically, the controller calculates the target temperature control requirement of the temperature control space where the air conditioner is located based on the indoor heat exchanger temperature and the compressor power, wherein the temperature control space where the air conditioner is located can be a vehicle passenger compartment, and the temperature control requirement includes adjusting the temperature in the temperature control space to the user's required temperature, maintaining the temperature, enhancing the temperature control, or weakening the temperature control. When the air conditioner operates in cooling mode, the target temperature control requirement can be to lower the temperature in the temperature control space to the user's required temperature, weaken the temperature reduction, enhance the temperature reduction, or maintain the temperature.

[0050] Step S3, controlling the compressor speed according to the target temperature adjustment requirement.

[0051] Among them, the target temperature control demand is the indoor temperature demand, the compressor speed has an impact on the indoor temperature, and the temperature adjustment of the temperature control space is to meet the demand. Therefore, the relationship between the target temperature control demand and the compressor speed can be established. Accordingly, the compressor speed can be controlled based on the target temperature control demand to meet the indoor temperature demand and improve the user's physical comfort.

[0052] For example, the indoor heat exchanger target temperature is obtained according to the target temperature adjustment requirement, and the compressor speed is controlled according to the indoor heat exchanger target temperature.

[0053] Specifically, a corresponding relationship between the temperature adjustment requirement and the target temperature of the indoor heat exchanger is established in the controller, so that the corresponding target temperature of the indoor heat exchanger can be obtained through the target temperature adjustment requirement.

[0054] Since the higher the compressor speed, the higher the circulation speed of the refrigerant in the air-conditioning system, the circulation speed of the refrigerant in the air-conditioning system can be increased by increasing the compressor speed, so that the indoor heat exchanger can absorb the heat of the temperature-controlled space faster to lower the temperature of the temperature-controlled space, that is, the temperature of the temperature-controlled space is lowered by controlling the compressor speed, and under the cooling condition, the lower the temperature of the indoor heat exchanger, the greater the heat absorption capacity, which makes the temperature of the temperature-controlled space lower. Based on this, in the present application, the temperature of the temperature control space is adjusted by the target temperature control demand of the temperature control space, that is, first, the corresponding indoor heat exchanger target temperature is obtained by the target temperature control demand, that is, the heat exchange capacity of the indoor heat exchanger is determined by the temperature control demand, and then the compressor speed is controlled by the indoor heat exchanger target temperature, that is, the compressor speed is controlled by the indoor heat exchanger target temperature to change the heat exchange capacity of the indoor heat exchanger to adjust the temperature of the temperature control space, so that the temperature of the temperature control space where the air conditioner is located meets the target temperature control demand. Therefore, compared with the existing air conditioner that controls the indoor temperature by the indoor temperature and the outdoor ambient temperature, in the present application, the indoor heat exchanger target temperature corresponding to the target temperature control demand is obtained to indirectly realize the automatic adjustment of the temperature of the temperature control space, so that the temperature of the temperature control space where the air conditioner is located meets the target temperature control demand, and there is no need to set the indoor or outdoor ambient temperature sensor to collect the indoor temperature and the outdoor ambient temperature. Therefore, when the indoor and outdoor ambient temperature sensors or the connecting wiring harnesses fail, the indoor temperature can be timely adjusted to avoid degradation and failure of the air conditioner temperature adjustment function, and the indoor and outdoor ambient sensors can be saved, and the production cost is low.

[0055] For example, under cooling conditions, when the target temperature control demand is to enhance the temperature control intensity, the target temperature control demand corresponds to a lower indoor heat exchanger target temperature to improve the heat exchange capacity of the indoor heat exchanger, that is, the compressor speed is increased by controlling the indoor heat exchanger target temperature or the compressor speed is controlled to run at a higher speed. At this time, the increase in refrigerant flow will cause the heat exchange rate between the indoor heat exchanger and the air in the temperature-controlled space, that is, the heat exchange capacity of the indoor heat exchanger to increase, so that the indoor heat exchanger can absorb the heat of the temperature-controlled space faster, thereby enhancing the degree of temperature reduction in the temperature-controlled space; or, when the target temperature control demand is In order to weaken the temperature control intensity, the target temperature control demand corresponds to a higher indoor heat exchanger target temperature to weaken the heat exchange capacity of the indoor heat exchanger, that is, the compressor speed is controlled by the indoor heat exchanger target temperature to reduce the compressor speed and run at a lower speed. At this time, the reduction in refrigerant flow will cause the heat exchange rate between the indoor heat exchanger and the air in the temperature control space, that is, the heat exchange capacity of the indoor heat exchanger to be reduced, so that the indoor heat exchanger can slow down the absorption of heat from the temperature control space, thereby reducing the degree of temperature reduction in the temperature control space, thereby achieving the purpose of controlling the compressor speed based on the target temperature control demand and adjusting the temperature.

[0056] According to the air-conditioning control method of an embodiment of the present invention, the compressor speed is controlled based on the target temperature control demand of the temperature control space to change the heat exchange capacity of the indoor heat exchanger, so as to adjust the temperature of the temperature control space, so that the temperature of the temperature control space where the air conditioner is located meets the target temperature control demand. Therefore, in the present application, the target temperature control demand is obtained through the indoor heat exchanger temperature and the compressor power, and the compressor speed is controlled according to the target temperature control demand, so as to indirectly realize automatic adjustment of the temperature of the temperature control space, so that the temperature of the temperature control space where the air conditioner is located meets the target temperature control demand, and there is no need to set an indoor or outdoor ambient temperature sensor to collect the indoor temperature and the outdoor ambient temperature. Therefore, when the indoor or outdoor ambient temperature sensor or the connecting wiring harness fails, the indoor temperature can be timely adjusted to avoid the problem of degradation and failure of the air conditioning temperature adjustment function, and it does not rely on the indoor and outdoor ambient temperature sensors, and the production cost is low.

[0057] In some embodiments, the target temperature adjustment demand is calculated based on a temperature conversion model. The temperature conversion model uses the temperature change rate of the indoor heat exchanger temperature within the first preset time and the compressor power as inputs. That is, the temperature change rate α of the indoor heat exchanger temperature within the first preset time is calculated based on the temperature conversion model. Teva and compressor power P AC Input the temperature conversion model to calculate the temperature control demand Q, Q = f(P AC , α Teva ), exemplarily, the temperature conversion model can be a cooling capacity estimation model, and the temperature change rate of the indoor heat exchanger temperature within the first preset time and the compressor cooling power are input into the cooling capacity estimation model to calculate the temperature control demand, that is, the cooling demand.

[0058] The first preset time may be configured by calibration. The first preset time is preferably such that the temperature of the indoor heat exchanger can produce a temperature change under normal circumstances, so as to better obtain the temperature change rate of the indoor heat exchanger.

[0059] In some embodiments, the temperature conversion model is expressed as:

[0060]

[0061] Wherein, β is a conversion coefficient between the temperature change rate and the temperature change rate of the temperature adjustment space within the first preset time.

[0062] Specifically, since there is the following relationship between compressor power and target temperature control demand: compressor power = temperature control demand / air density*air specific heat capacity*(indoor heat exchanger inlet temperature-indoor heat exchanger outlet temperature), in this application, the difference between the indoor heat exchanger inlet temperature and the indoor heat exchanger outlet temperature is indirectly reflected by the temperature change rate of the indoor heat exchanger. Therefore, compressor power = temperature control demand / air density*air specific heat capacity*temperature change rate. The temperature control demand is expressed as a function of compressor power and temperature change rate. This function is used as a temperature conversion model. Based on this, the target temperature control demand can be calculated according to the compressor power and the temperature change rate.

[0063] In an embodiment, the compressor power and the temperature change rate in the temperature conversion model may be calibrated by a bench test method to improve the accuracy of the acquired temperature control requirements.

[0064] In addition, when the compressor power and the damper opening are constant, the higher the ambient temperature of the temperature-controlled space, the slower the temperature of the indoor heat exchanger drops. Conversely, the lower the ambient temperature of the temperature-controlled space, the faster the temperature of the indoor heat exchanger drops. Therefore, in this application, the rate of change of the indoor heat exchanger temperature is used to indirectly reflect the ambient temperature and internal temperature of the temperature-controlled space to calculate the cooling demand.

[0065] In some embodiments, within a first preset time, the compressor of the air conditioner is controlled to operate at a preset target speed, that is, the compressor is controlled to operate at a controllable preset target speed, and the temperature of the indoor heat exchanger is obtained, and the changes in the increase or decrease in the temperature of the indoor heat exchanger within the first preset time are monitored, that is, the temperature change of the indoor heat exchanger can be monitored, wherein the preset target speed can be any speed within the operating range of the compressor or the current operating speed of the compressor.

[0066] For example, the compressor operation is controlled at any speed within the compressor working range. Changes in the compressor speed will cause changes in the refrigerant circulation volume and temperature in the refrigeration cycle system, thereby causing changes in the temperature of the indoor heat exchanger. The temperature sensor at the indoor heat exchanger can monitor changes in the indoor heat exchanger temperature within the first preset time.

[0067] In some embodiments, since the temperature of the temperature control space environment, i.e., the temperature outside the temperature control space and the temperature inside the temperature control space, changes may cause the target temperature control demand to change, in an embodiment of the present invention, the target temperature control demand is calculated periodically. Figure 2As shown, the target temperature adjustment requirement is periodically calculated every second preset time, so that when the ambient temperature of the temperature adjustment space changes, the target temperature adjustment requirement that matches the ambient temperature can be calculated in time. Then, the indoor heat exchanger target temperature can be re-acquired according to the temperature adjustment requirement corresponding to the ambient temperature change, so that the temperature of the temperature adjustment space can be re-adjusted by controlling the compressor speed through the indoor heat exchanger target temperature, so that the temperature of the temperature adjustment space meets the target temperature adjustment requirement after the change, so as to achieve the best temperature adjustment effect, improve the comfort of the temperature adjustment space, and there is no need to manually adjust the set temperature when the environmental factors change, which improves the intelligence of the air conditioner temperature adjustment.

[0068] For example, taking the target temperature control demand as the cooling demand, when the external temperature of the temperature control space and the internal temperature of the temperature control space are high, the cooling demand is greater, and when the external temperature of the temperature control space or the internal temperature of the temperature control space decreases, the cooling demand decreases accordingly. Therefore, when the ambient temperature of the temperature control space where the air conditioner is located changes, the cooling demand matching the ambient temperature can be calculated in time, and the indoor heat exchanger target temperature can be re-obtained according to the cooling demand corresponding to the ambient temperature change, so as to control the compressor speed through the indoor heat exchanger target temperature to meet the changed cooling demand and achieve the best cooling effect.

[0069] In some embodiments, when the target temperature control requirement is periodically calculated, the cycle time of each cycle includes multiple first preset times; the target temperature control requirement of each cycle is the average value of multiple target temperature control requirements of the temperature control space calculated within the multiple first preset times of the cycle time. That is, the target temperature control requirements of multiple first preset times can be obtained according to the above method within the cycle time, and the average value of the multiple target temperature control requirements is calculated as the target temperature control requirement of the cycle. Since the average value of the target temperature control requirement can more accurately reflect the overall demand of the temperature control space in the cycle time, when the temperature of the temperature control space is adjusted by the average value of the target temperature control requirement, the stability and accuracy of the temperature control of the temperature control space can be improved, and the temperature fluctuation of the temperature control space can be reduced.

[0070] In some embodiments, the target temperature of the indoor heat exchanger is obtained by querying a mapping relationship based on a target temperature control demand, wherein the mapping relationship is the relationship satisfied between the temperature control demand and the indoor heat exchanger temperature, and the mapping relationship can be obtained through a bench test of the air conditioner. Since the temperature control demand and the indoor heat exchanger temperature are in a one-to-one correspondence in the mapping relationship, the target temperature of the indoor heat exchanger can be obtained by querying the target temperature control demand, thereby indirectly realizing automatic adjustment of the temperature of the temperature control space by obtaining the target temperature of the indoor heat exchanger corresponding to the target temperature control demand, so that the temperature of the temperature control space where the air conditioner is located meets the target temperature control demand.

[0071] In some embodiments, the mapping relationship is expressed as: the greater the temperature adjustment demand, the smaller the indoor heat exchanger temperature, or the smaller the temperature adjustment demand, the greater the indoor heat exchanger temperature.

[0072] For example, since cooling capacity = air mass m* air specific heat capacity C p *Air temperature changes Δt, so the greater the cooling capacity, the greater the air temperature change. Therefore, when the air conditioner damper opening is constant, the greater the cooling capacity, the lower the indoor heat exchanger outlet temperature, that is, the air conditioner needs to provide more cooling capacity to provide a lower indoor heat exchanger outlet temperature to reduce the temperature of the temperature-controlled space. In this application, the indoor heat exchanger outlet temperature is indirectly reflected by the indoor heat exchanger temperature. Therefore, when the temperature control demand is the cooling demand, the greater the temperature control demand, the smaller the indoor heat exchanger temperature. Conversely, the smaller the temperature control demand, the greater the indoor heat exchanger temperature. Therefore, the relationship between the temperature control demand and the indoor heat exchanger temperature, namely, the temperature conversion model, is established.

[0073] In some embodiments, the compressor speed is controlled according to the target temperature of the indoor heat exchanger, including: under cooling conditions, when the actual temperature of the indoor heat exchanger is greater than the target temperature of the indoor heat exchanger, increasing the compressor speed; or, when the actual temperature of the indoor heat exchanger is less than the target temperature of the indoor heat exchanger, reducing the compressor speed.

[0074] Specifically, when the air conditioner is in cooling condition and controls the compressor speed according to the indoor heat exchanger target temperature to adjust the temperature of the temperature-controlled space where the air conditioner is located, the detected actual temperature of the indoor heat exchanger is compared with the indoor heat exchanger target temperature to determine whether the temperature of the temperature-controlled space where the air conditioner is located reaches the temperature required by the user. When it is determined that the actual temperature of the indoor heat exchanger is greater than the indoor heat exchanger target temperature, it means that the temperature of the temperature-controlled space where the air conditioner is located is higher than the temperature required by the user, and the actual cooling capacity is insufficient. The compressor speed is increased to increase the refrigerant flow rate in the indoor heat exchanger so that the actual temperature of the indoor heat exchanger is reduced to near the indoor heat exchanger target temperature. On the contrary, when the actual temperature of the indoor heat exchanger is less than the indoor heat exchanger target temperature, it means that the temperature of the temperature-controlled space where the air conditioner is located is lower than the user required temperature. The compressor speed is reduced to reduce the refrigerant flow rate in the indoor heat exchanger so that the actual temperature of the indoor heat exchanger is increased to near the indoor heat exchanger target temperature. Therefore, in the present application, the actual temperature of the indoor heat exchanger is maintained near the indoor heat exchanger target temperature by adjusting the compressor speed, so that the temperature of the temperature-controlled space where the air conditioner is located meets the temperature control requirements.

[0075] Alternatively, the compressor speed can also be controlled by the difference between the actual temperature of the indoor heat exchanger and the target temperature of the indoor heat exchanger, wherein the preset difference is the allowable error range for maintaining the actual temperature of the indoor heat exchanger near the target temperature of the indoor heat exchanger, and the preset difference can be 0. If the difference is greater than the preset difference, the compressor speed is increased; if the difference is less than the preset difference, the compressor speed is reduced. Therefore, in the present application, the actual temperature of the indoor heat exchanger is maintained near the target temperature of the indoor heat exchanger by adjusting the compressor speed, so that the temperature of the temperature control space where the air conditioner is located meets the temperature control requirements.

[0076] In some embodiments, when an abnormality is detected in the temperature detection signal of a temperature sensor used to detect the ambient temperature inside and outside the temperature control space, the target temperature control requirement can be obtained according to the indoor heat exchanger temperature and the compressor power according to the above-mentioned method of an embodiment of the present invention, and then the compressor speed can be controlled according to the target temperature control requirement. For example, the indoor heat exchanger target temperature is obtained according to the target temperature control requirement, and the temperature of the temperature control space is adjusted according to the indoor heat exchanger target temperature so that the temperature of the temperature control space where the air conditioner is located meets the target temperature control requirement. Therefore, when the indoor and outdoor ambient temperature sensors or the connecting wiring harnesses fail, the temperature inside the vehicle can be timely controlled to avoid degradation and failure of the air conditioner temperature control function. The temperature detection signal abnormality may be an abnormality in the temperature sensor or an abnormality in the sensor connecting wiring harness.

[0077] Reference below Figure 3 The air conditioning control method according to the embodiment of the present invention is illustrated by way of example, and the specific contents are as follows.

[0078] Step S5, start.

[0079] Step S6, controlling the compressor of the air conditioner to operate at a preset target speed.

[0080] Step S7, collecting the temperature of the indoor heat exchanger.

[0081] Step S8, calculating the temperature change rate of the indoor heat exchanger temperature within the first preset time.

[0082] Step S9, calculating the compressor power.

[0083] Step S10: Input the temperature change rate of the indoor heat exchanger temperature within the first preset time and the compressor power into a temperature conversion model to calculate and obtain a target temperature adjustment requirement.

[0084] Step S11, end.

[0085] Reference below Figure 4 The air conditioning control method according to the embodiment of the present invention is illustrated by way of example, and the specific contents are as follows.

[0086] Step S12, start.

[0087] Step S13, calculating the target temperature control requirement of the temperature control space where the air conditioner is located.

[0088] Step S14, querying the mapping relationship between the temperature adjustment demand and the indoor heat exchanger temperature to obtain the indoor heat exchanger target temperature.

[0089] Step S15, determining whether the actual temperature of the indoor heat exchanger is greater than the target temperature of the indoor heat exchanger, if so, executing step S16, otherwise executing step S17.

[0090] Step S16, increase the compressor speed, and execute step S18.

[0091] Step S17, reduce the compressor speed and execute step S18.

[0092] Step S18, end.

[0093] Therefore, in the present application, the target temperature control demand is obtained based on the indoor heat exchanger temperature and the compressor power, and the compressor speed is controlled according to the target temperature control demand, and it does not rely on the ambient temperature sensor data inside and outside the vehicle. Specifically, based on the relationship between the temperature control demand of the temperature control space and the target temperature of the indoor heat exchanger, after the corresponding indoor heat exchanger target temperature is determined through the target temperature control demand, the compressor speed is controlled by the indoor heat exchanger target temperature to change the heat exchange capacity of the indoor heat exchanger to adjust the temperature of the temperature control space, that is, the automatic adjustment of the temperature of the temperature control space is indirectly achieved by obtaining the indoor heat exchanger target temperature corresponding to the temperature control demand, so that the temperature of the temperature control space where the air conditioner is located meets the target temperature control demand.

[0094] A second aspect of the present invention provides a controller, such as Figure 5 As shown, the controller 10 includes: a processor 1 and a memory 2 which is communicatively connected to the processor 1 .

[0095] The memory 2 stores a computer program that can be executed by the processor, and the air conditioning control method of the above embodiment is implemented when the processor 1 executes the computer program.

[0096] According to the controller of the embodiment of the present invention, by executing the air-conditioning control method described in the above embodiment, the temperature inside the vehicle can be adjusted in time when the temperature sensors inside and outside the vehicle or the connecting wiring harness fail, thereby avoiding degradation and failure of the air-conditioning temperature adjustment function, and the production cost is low.

[0097] A third aspect of the present invention provides a non-volatile readable storage medium having a computer program stored thereon, wherein the air conditioning control method of the above embodiment is implemented when the computer program is executed.

[0098] The fourth aspect of the present invention provides an air conditioning system, including: an indoor heat exchanger and a compressor. As shown in the figure, the air conditioning system 20 includes a first temperature sensor 3 and the controller 10 of the above embodiment.

[0099] The first temperature sensor 3 is used to detect the temperature of the indoor heat exchanger; Figure 6 As shown, the controller 10 is connected to the first temperature sensor 3 .

[0100] According to the air-conditioning system of the embodiment of the present invention, through the air-conditioning system of the above embodiment, the temperature inside the vehicle can be timely controlled when the temperature sensors inside and outside the vehicle or the connecting wiring harnesses fail, thereby avoiding degradation and failure of the air-conditioning temperature adjustment function, and the production cost is low.

[0101] A fifth aspect of the present invention provides a vehicle, such as Figure 7 As shown, the vehicle 100 includes the air conditioning system 20 of the above-mentioned embodiment.

[0102] According to the vehicle of the embodiment of the present invention, through the air-conditioning system of the above embodiment, the temperature inside the vehicle can be timely regulated when the temperature sensors inside and outside the vehicle or the connecting wiring harnesses fail, thereby avoiding degradation and failure of the air-conditioning temperature regulation function, and the production cost is relatively low.

[0103] In some embodiments, the controller of the air conditioning system is a vehicle controller or a domain controller of the vehicle, that is, the vehicle controller or the domain controller realizes the indoor heat exchanger temperature collection, data processing and calculation, compressor speed control and temperature adjustment control functions to save the vehicle cost. In addition, the vehicle can be a new energy vehicle.

[0104] In some embodiments, the vehicle further includes: a second temperature sensor and a third temperature sensor.

[0105] The second temperature sensor is used to detect the temperature of the vehicle interior environment; the third temperature sensor is used to detect the temperature of the vehicle exterior environment. Specifically, in the present application, the temperature of the vehicle interior environment detected by the second temperature sensor and the temperature of the vehicle exterior environment detected by the third temperature sensor are input into the control algorithm to output the air conditioning control amount to achieve the control of the vehicle interior temperature.

[0106] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0107] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioning control method, characterized in that: include: Get the indoor heat exchanger temperature and compressor power of the air conditioner; Determining a target temperature adjustment requirement of the temperature adjustment space of the air conditioner according to the indoor heat exchanger temperature and the compressor power; The compressor speed is controlled according to the target temperature adjustment requirement.

2. The air conditioning control method according to claim 1, characterized in that: The target temperature adjustment requirement is calculated based on a temperature conversion model, and the temperature conversion model uses the temperature change rate of the indoor heat exchanger temperature within a first preset time and the compressor power as input quantities.

3. The air conditioning control method according to claim 2, characterized in that: The temperature conversion model is expressed as: β is a conversion coefficient between the temperature change rate and the temperature change rate of the temperature adjustment space within the first preset time.

4. The air conditioning control method according to claim 2, characterized in that: During the first preset time, the compressor of the air conditioner operates at a preset target speed.

5. The air conditioning control method according to claim 2, characterized in that: The target temperature adjustment requirement is obtained by periodic calculation every second preset time.

6. The air conditioning control method according to claim 5, characterized in that: The cycle time of each cycle includes a plurality of the first preset times; The target temperature adjustment requirement of each cycle is an average value of multiple target temperature adjustment requirements of the temperature adjustment space calculated within multiple first preset times of the cycle time.

7. The air conditioning control method according to claim 1, characterized in that: Controlling the compressor speed according to the target temperature adjustment requirement includes: Obtaining a target temperature of the indoor heat exchanger according to the target temperature adjustment requirement; The compressor speed is controlled according to the indoor heat exchanger target temperature.

8. The air conditioning control method according to claim 7, characterized in that: The indoor heat exchanger target temperature is obtained by querying a mapping relationship according to the target temperature adjustment demand, wherein the mapping relationship is a relationship satisfied between the temperature adjustment demand and the indoor heat exchanger temperature.

9. The air conditioning control method according to claim 8, characterized in that: The mapping relationship is expressed as follows: the greater the temperature adjustment requirement, the smaller the temperature of the indoor heat exchanger, or the smaller the temperature adjustment requirement, the greater the temperature of the indoor heat exchanger.

10. The air conditioning control method according to claim 1, characterized in that: Controlling the compressor speed according to the indoor heat exchanger target temperature includes: In refrigeration conditions, When the actual temperature of the indoor heat exchanger is greater than the target temperature of the indoor heat exchanger, increasing the speed of the compressor; Alternatively, when the actual temperature of the indoor heat exchanger is lower than the target temperature of the indoor heat exchanger, the speed of the compressor is reduced.

11. The air conditioning control method according to claim 1, characterized in that: The air conditioning control method further includes: Before obtaining the indoor heat exchanger temperature and compressor power of the air conditioner, it is detected that the temperature detection signal of the temperature sensor used to detect the internal and external ambient temperatures of the temperature adjustment space is abnormal.

12. A controller, characterized in that: include: processor; a memory communicatively coupled to the processor; The memory stores a computer program that can be executed by the processor, and the processor implements the air conditioning control method according to any one of claims 1 to 11 when executing the computer program.

13. A non-volatile readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed, the air conditioning control method according to any one of claims 1 to 11 is implemented.

14. An air conditioning system, characterized in that: include: Indoor heat exchangers and compressors; A first temperature sensor, used to detect the temperature of the indoor heat exchanger; The controller of claim 12, wherein the controller is connected to the first temperature sensor.

15. A vehicle, characterized in that: Includes the air conditioning system as claimed in claim 14.

16. The vehicle according to claim 15, characterized in that The controller of the air conditioning system is a vehicle controller or a domain controller of the vehicle.

17. The vehicle according to claim 15, characterized in that The vehicle further comprises: A second temperature sensor is used to detect the ambient temperature inside the vehicle; The third temperature sensor is used to detect the ambient temperature outside the vehicle.

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