Control method and device of automobile heating system, computer device and storage medium

Abstract

The application discloses a control method and device of a vehicle heating system, computer equipment and a storage medium, and comprises the following steps: determining a first compressor speed interval when the heating efficiency of a heat pump device in the vehicle heating system is higher than the heating efficiency of a PTC heater under the current ambient temperature of the vehicle heating system; determining a second compressor speed interval corresponding to each gear of a blower according to the masking effect of the blower on the compressor noise under each gear of the vehicle heating system and a resonance speed interval that is not allowed for the whole vehicle; determining an optimal compressor speed interval according to the intersection of the first compressor speed interval and the second compressor speed interval; and controlling the speed of the compressor of the vehicle heating system to run in the optimal compressor speed interval, so that the temperature in the vehicle reaches a preset target temperature. The application can improve the heating energy efficiency while taking into account the NVH performance in the vehicle, thereby meeting the needs of users for low noise and rapid heating.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile air conditioning, and particularly to a control method and device of an automobile heating system, a computer device and a storage medium. BACKGROUND

[0002] In the prior art, an automobile heat pump system usually adopts heat pump and water heating PTC heater to jointly heat, a target COPCR compressor speed range of the heat pump system is pre-calibrated, in the range, the heat pump efficiency is higher than that of the PTC; if the target COPCR compressor speed cannot meet the heating demand, the water heating PTC is used to heat, the heat pump compressor speed and the water heating PTC are coupled to control, so as to improve the energy efficiency. However, the heating control method of the system has the following problems: in order to improve the energy efficiency, the compressor works at a too high speed, which causes a large noise and vibration in the vehicle, NVH problem exists in the vehicle, and the heating rate of the water heating PTC heater is slow, which cannot bring better thermal comfort experience to the user in the scene requiring fast heating. SUMMARY

[0003] Embodiments of the present application provide a control method and device of an automobile heating system, a computer device and a storage medium, to solve the problem that the existing automobile heating system improves the energy efficiency while causing a large noise and vibration in the vehicle, NVH problem exists in the vehicle, and the user's demand for low noise and fast heating cannot be met.

[0004] A control method of an automobile heating system, comprising:

[0005] determining a first compressor speed range when a heating efficiency of a heat pump device in the automobile heating system is higher than that of a PTC heater under a current ambient temperature of the automobile heating system;

[0006] determining a second compressor speed range corresponding to each gear of a blower according to a masking effect of the blower on the compressor noise and a resonance speed range not allowed by the whole vehicle;

[0007] determining an optimal compressor speed range according to an intersection of the first compressor speed range and the second compressor speed range;

[0008] controlling a speed of a compressor of the automobile heating system to run in the optimal compressor speed range, so that the temperature in the vehicle reaches a preset target temperature.

[0009] A control device of an automobile heating system, comprising:

[0010] The first rotation speed calculation module is configured to determine a first compressor rotation speed interval when a heating efficiency of a heat pump device in the automobile heating system is higher than a heating efficiency of a PTC heater under a current ambient temperature of the automobile heating system.

[0011] The second rotation speed calculation module is configured to determine a second compressor rotation speed interval corresponding to each gear of the air blower according to a masking effect of the air blower on the compressor noise under each gear of the automobile heating system and a resonance rotation speed interval that is not allowed by the whole vehicle.

[0012] The optimal rotation speed calculation module is configured to determine an optimal compressor rotation speed interval according to an intersection of the first compressor rotation speed interval and the second compressor rotation speed interval.

[0013] The rotation speed regulation module is configured to control a rotation speed of the compressor of the automobile heating system to run in the optimal compressor rotation speed interval, so that an indoor temperature reaches a preset target temperature.

[0014] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the control method of the automobile heating system when executing the computer program.

[0015] A computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the control method of the automobile heating system.

[0016] The control method, device, computer device, and storage medium of the automobile heating system determine a first compressor rotation speed interval for representing that the heating efficiency of the compressor is higher than the heating efficiency of the PTC heater and a second compressor rotation speed interval for representing that the noise and vibration of the vehicle do not affect the comfort of the vehicle when the compressor works, obtain an optimal compressor rotation speed interval by taking an intersection of the intervals, and then control the compressor to work in the interval, so that the heating efficiency is improved while the NVH performance of the vehicle is considered, thereby meeting the demand of the user for low noise and rapid heating. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is a schematic diagram of an application environment of the control method of the automobile heating system in an embodiment of the present application.

[0019] Figure 2 is a flow chart of a control method of a vehicle heating system in an embodiment of the present application;

[0020] Figure 3 is a graph of a heating capacity variation curve and a power consumption variation curve of a heat pump device in an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of a control device of a vehicle heating system in an embodiment of the present application;

[0022] Figure 5 is a schematic diagram of a computer device in an embodiment of the present application;

[0023] Figure 6 is a schematic diagram of a vehicle heating system in an embodiment of the present application;

[0024] Symbol explanation:

[0025] 1, electric compressor; 2, air heating PTC heater; 3, indoor condenser; 4, evaporator; 5, air blower; 6, electromagnetic valve; 7, first electronic expansion valve; 8, gas-liquid separator; 9, three-way valve; 10, fan; 11, outdoor condenser; 12, second electronic expansion valve.

[0026] Symbol explanation:

[0027] 1, electric compressor; 2, air heating PTC heater; 3, indoor condenser; 4, evaporator; 5, air blower; 6, electromagnetic valve; 7, first electronic expansion valve; 8, gas-liquid separator; 9, three-way valve; 10, fan; 11, outdoor condenser; 12, second electronic expansion valve. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] The control method of the vehicle heating system provided by the embodiments of the present application can be applied in the application environment as shown in Figure 1 . Specifically, the control method of the vehicle heating system is applied in a vehicle heating system, which includes a heat pump device and a PCT heater as shown in Figure 1 , and the heat pump device and the PTC heater respectively communicate with a controller for realizing control of a compressor of the heat pump device and the PTC heater, so as to take into account the energy efficiency and the in-vehicle NVH performance.

[0030] In an embodiment, as shown in Figure 2 , a control method of an automobile heating system is provided, which is described by taking the automobile heating system in Figure 1 as an example, and includes the following steps.

[0031] S201. Determine a first compressor speed interval when the heating efficiency of a heat pump device in the automobile heating system is higher than that of a PTC heater at a current ambient temperature of the automobile heating system.

[0032] Since the automobile heating system is provided with the heat pump device and the PTC heater, the heating effect can be achieved by setting the compressor in the heat pump device to work or the PTC heater to work. In order to ensure a high heating efficiency, the compressor needs to work in different speed ranges, the heating efficiency of the compressor at different speeds is measured, and compared with the heating efficiency of the PTC heater, and the high-energy-efficiency speed range when the heating efficiency of the heat pump device is greater than that of the PTC heater is selected as the first compressor speed interval.

[0033] S202. Determine a second compressor speed interval corresponding to each gear of a blower according to the masking effect of the blower on the noise of the compressor and the resonance speed interval not allowed by the whole vehicle.

[0034] The masking effect of the blower on the noise of the compressor refers to that when the blower and the compressor are controlled to work, the noise generated by the blower working at the corresponding gear can mask a part of the noise generated by the compressor working at a certain speed interval, and the noise value of the masked part is less than or equal to the noise value generated by the blower working. The resonance speed interval not allowed by the whole vehicle refers to a certain speed interval that needs to be avoided by the compressor to avoid resonance of the whole vehicle.

[0035] Since the noise of the compressor working in the second compressor speed interval is masked by the noise generated by the blower working at the same time, and the vehicle will not produce resonance phenomenon, it can be ensured that the vehicle will not produce large noise and vibration.

[0036] S203. Determine an optimal compressor speed interval according to the intersection of the first compressor speed interval and the second compressor speed interval.

[0037] The first compressor speed interval is used to represent the speed range of the compressor when the heating energy efficiency is higher than the heating energy efficiency of the PCT heater, and the second compressor speed interval is used to represent the speed range of the compressor when the noise and vibration of the vehicle do not affect the comfort of the vehicle when the compressor is working. Therefore, the intersection of the two speed intervals can obtain the optimal compressor speed interval considering the energy efficiency and the NVH performance of the vehicle.

[0038] In S204, the speed of the compressor of the automobile heating system is controlled to run in the optimal compressor speed interval, so that the temperature in the vehicle reaches the preset target temperature.

[0039] Since the compressor can achieve the purpose of rapid heating at any speed in the optimal compressor speed interval, and the higher the speed of the compressor, the lower the NVH performance of the vehicle, a lower speed can be selected in the optimal compressor speed interval to control the compressor to run, so that the temperature in the vehicle reaches the preset target temperature.

[0040] The control method of the automobile heating system of the embodiment determines the first compressor speed interval representing the working speed of the compressor when the heating energy efficiency is higher than the heating energy efficiency of the PCT heater, and the second compressor speed interval representing the working speed of the compressor when the noise and vibration of the vehicle do not affect the comfort of the vehicle, and obtains the optimal compressor speed interval by taking the intersection of the intervals. Then, the compressor can be controlled to work in the interval, so that the NVH performance in the vehicle is considered while improving the heating energy efficiency, thereby meeting the needs of users for low noise and rapid heating.

[0041] In an embodiment, in S201, the first compressor speed interval is determined when the heating efficiency of the heat pump device in the automobile heating system is higher than the heating efficiency of the PTC heater at the current environmental temperature of the automobile heating system, and specifically includes:

[0042] In S301, the heating capacity and power consumption of the heat pump device at different compressor speeds are obtained at the current environmental temperature of the automobile heating system.

[0043] The heating capacity and power consumption of the heat pump device at different compressor speeds can be measured by experiments on the actual vehicle.

[0044] In S302, the heating capacity variation and power consumption variation of the heat pump device at the preset N compressor speed variables are determined according to the heating capacity and power consumption of the heat pump device at different compressor speeds, and N≥2.

[0045] Wherein, N compressor speed variables can be set, such as a variable for the first compressor speed rising to the second compressor speed, a variable for the second compressor speed rising to the third compressor speed, and so on. Then, the difference between the heating capacity and the power consumption of the heat pump device before and after the compressor speed changes respectively is calculated to obtain the heating capacity variation and the power consumption variation of the heat pump device.

[0046] S303, determining the heating efficiency of the heat pump device at the preset N compressor speed variables according to the heating capacity variation and the power consumption variation of the heat pump device at the preset N compressor speed variables.

[0047] Wherein, the heating efficiency of the heat pump device can be measured by the ratio of the heating capacity variation and the power consumption variation of the heat pump device. The heating efficiency of the heat pump device at the N compressor speed variables can be obtained by the heating capacity variation and the power consumption variation of the heat pump device at the N compressor speed variables.

[0048] S304, obtaining the heating efficiency of the PTC heater in the automobile heating system, and determining N1 compressor speed variables when the heating efficiency of the heat pump device is greater than the heating efficiency of the PTC heater, N1 < N, thereby determining the first compressor speed interval.

[0049] Wherein, the heating efficiency of the PTC heater can be measured by a component test. After determining the heating efficiency of the heat pump device at the N compressor speed variables when the vehicle is at a certain ambient temperature, and the heating efficiency of the PTC heater, the heating efficiency of the PTC heater is compared with the heating efficiency of the heat pump device at each compressor speed variable, and N1 compressor speed variables are screened from the N compressor speed variables, so that the heating efficiency of the heat pump device at the N1 compressor speed variables is greater than the heating efficiency of the PTC heater, and finally the first compressor speed interval is determined by the N1 compressor speed variables.

[0050] The control method of the automobile heating system of the embodiment defines the heating efficiency of the heat pump device, and determines the heating efficiency of the heat pump device at different compressor speed variables by the heating capacity and the power consumption of the heat pump device at different compressor speeds, and compares the heating efficiency of the heat pump device with the heating efficiency of the PTC heater, thereby determining the first compressor speed interval with higher heating energy efficiency.

[0051] In an embodiment, in step S303, determining the heating efficiency of the heat pump device at the preset N compressor speed variables according to the heating capacity variation and the power consumption variation of the heat pump device at the preset N compressor speed variables, comprises:

[0052] S401, determine the heat pump equipment heating capacity change curve and power consumption change curve under the preset N compressor speed variable;

[0053] S402, according to the heating capacity change curve and power consumption change curve, calculate the ratio of the heating capacity change and power consumption change of the heat pump equipment under the preset N compressor speed variable, obtain the heating efficiency of the heat pump equipment under the preset N compressor speed variable.

[0054] In step S401, according to the heating capacity change and power consumption change of the heat pump equipment under the preset N compressor speed variable, the heating capacity change curve and the power consumption change curve of the heat pump equipment are drawn; wherein, the heating capacity change curve is used to represent the curve of the heating capacity change with the compressor speed change, and the power consumption change curve is used to represent the curve of the power consumption change with the compressor speed change, as shown in Figure 3 .

[0055] As Figure 3 It can be seen that according to the heating efficiency calculation method of the heat pump equipment in step S402, the heating efficiency δ of the preset PTC heater is 1, when the compressor speed is less than or equal to 4000r / min, the heating efficiency COPEQ of the heat pump equipment is greater than or equal to δ, that is, when the ambient temperature is 0℃, the compressor speed is within 4000rpm, which is the high efficiency speed interval of the heat pump equipment, that is, the first compressor speed interval.

[0056] In an embodiment, in step S202, the second compressor speed interval corresponding to each gear of the blower is determined according to the masking effect of the blower on the compressor noise under each gear of the automobile heating system, and the resonance speed interval not allowed by the whole vehicle, comprising:

[0057] S501, obtain the noise value of the blower under each gear of the automobile heating system, and the in-vehicle noise value generated by the compressor under each speed of the automobile heating system;

[0058] S502, determine the compressor speed range corresponding to each gear of the blower when the in-vehicle noise value is less than or equal to the noise value of the blower under each gear;

[0059] S503, remove the preset resonance speed interval that needs to be avoided by the whole vehicle from the compressor speed range corresponding to each gear of the blower, to obtain the second compressor speed interval corresponding to each gear of the blower.

[0060] In step S502, the compressor speed range allowed in each air blower gear can be determined according to the masking effect of the noise of the air blower on the noise of the compressor. The compressor speed range can be the compressor speed range corresponding to each gear of the air blower when the noise in the vehicle is smaller than the noise of the air blower in each gear by a preset noise deviation (for example, 5 db), or the compressor speed range corresponding to each gear of the air blower when the noise in the vehicle is equal to the noise of the air blower in each gear.

[0061] In step S503, the resonance speed range that needs to be avoided by the whole vehicle is the resonance speed range (i.e., the frequency avoidance range) that needs to be avoided by the compressor when the steering wheel, the seat, and the vehicle body resonate. For example, when the steering wheel mode is 40 Hz and the compressor speed is about 2400 r / min, the steering wheel resonates and needs to avoid 2200 r / min-2600 r / min. According to the noise and vibration performance in the vehicle, the optimal NVH speed range (i.e., the second compressor speed range) of the compressor is shown in Table 1.

[0062] Table 1: Optimal NVH speed range of the compressor in each air blower gear

[0063]

[0064] According to step S203, the first compressor speed range determined in step S203 and the second compressor speed range determined in Table 1 are intersected, and thus the compressor speed range (i.e., the optimal compressor speed range) that takes into account the energy efficiency and the NVH performance of the compressor in each air blower gear when the ambient temperature is 0℃ is shown in Table 2. Figure 3

[0065] Table 2: Compressor speed range that takes into account the optimal energy efficiency and the NVH performance

[0066]

[0067] The control method of the automobile heating system in this embodiment uses the masking effect of the noise of the air blower on the noise of the compressor to link the air blower gear and the compressor speed, and determines the resonance speed range that needs to be avoided according to the vibration of the steering wheel, the seat, and other components in the vehicle at each compressor speed. Finally, the compressor speed range allowed in each air volume gear is determined, and the speed range is intersected with the high-efficiency speed range of the heat pump device that is set in advance to obtain the optimal compressor speed range based on the optimal energy efficiency and the NVH performance. When the passenger compartment is heated, the compressor always works in the optimal compressor speed range.

[0068] ​In an embodiment, the step S204, i.e. controlling the compressor of the automobile heating system to operate at a speed within the optimal compressor speed range, so as to make the temperature in the vehicle reach the preset target temperature, comprises the following speed increasing adjustment steps:

[0069] S601, first control the compressor of the automobile heating system to operate at the lowest speed within the optimal compressor speed range, monitor the real-time temperature in the vehicle, and when the real-time temperature is less than the preset target temperature, gradually increase the speed on the basis of the lowest speed within the optimal compressor speed range to obtain a requested first target speed, and control the compressor of the automobile heating system to operate at the first target speed until the real-time temperature is not less than the preset target temperature.

[0070] The lowest speed within the optimal compressor speed range is a lower speed at which the compressor can start to operate, for example, it can be 20 r / min, 40 r / min or 60 r / min, etc., which can be set according to the situation. When the compressor is controlled to operate at the lowest speed, the temperature in the vehicle and the target temperature are monitored. If the temperature in the vehicle is less than or equal to the target temperature, the speed of the compressor is requested to be increased, otherwise the current speed is maintained.

[0071] In an embodiment, the speed increasing adjustment step further comprises:

[0072] S602, when the first target speed is within the resonance speed range, the compressor of the automobile heating system is controlled to operate at the upper limit speed of the resonance speed range;

[0073] S603, when the first target speed exceeds the highest speed within the optimal compressor speed range, the compressor of the automobile heating system is controlled to operate at the highest speed.

[0074] When the first target speed requested in the above step S601 is continuously increased and the first target speed reaches the resonance speed range for the first time, in order to maximize the NVH performance in the vehicle, the compressor needs to be controlled to operate at the upper limit speed of the resonance speed range. For example, operate at the upper limit speed 2600 r / min of the resonance speed range in Table 2.

[0075] In an embodiment, the control method further comprises the following speed decreasing adjustment step:

[0076] S701, after controlling the compressor of the automobile heating system to operate at the highest speed, if it is detected that the real-time temperature is less than the target temperature, the air warming PTC heater of the automobile heating system is started to work, so that the real-time temperature is not less than the target temperature;

[0077] For example, according to Table 2, assuming that the blower is set to 3 gears, if the requested compressor speed is between 2400 r / min and 2600 r / min, the compressor is controlled to operate at 2600 r / min, and if the requested compressor speed exceeds the 3-gear limit of 3600 r / min in Table 2, the compressor is controlled to operate at 3600 r / min, and at this time, if the real-time temperature in the vehicle is still lower than the target temperature, the warm air PTC heater is started to supplement heating until the temperature in the vehicle reaches the target temperature.

[0078] S702, when it is detected that the real-time temperature is greater than the target temperature, if the warm air PTC heater is in a started state, the warm air PTC heater is controlled to reduce the output power or the warm air PTC heater is turned off;

[0079] S703, when the real-time temperature is again detected to be greater than the target temperature, the current speed of the compressor is gradually reduced to obtain a second target speed, and the compressor of the automobile heating system is controlled to operate at the second target speed until the real-time temperature is not greater than the target temperature.

[0080] The control method of the automobile heating system of the embodiment controls the compressor to always operate in the optimal compressor speed range during passenger compartment heating, and cooperatively controls the warm air PTC heater, and takes the temperature in the vehicle as the target for closed-loop control, preferentially uses the heat pump equipment of the automobile heating system for air conditioning heating, and when the heat pump equipment cannot meet the heating demand, the warm air PTC heater is started immediately. Since the heat pump equipment has the characteristics of high energy efficiency, and the warm air PTC heater has the characteristics of fast heating, the energy saving, NVH performance and thermal comfort can be optimally balanced.

[0081] In an embodiment, the control method further comprises:

[0082] According to the real-time temperature and the target temperature, the speed-up adjustment step and the speed-down adjustment step are repeated to realize coupled closed-loop control of the compressor and the warm air PTC heater.

[0083] The control method of the automobile heating system of the embodiment takes the temperature in the vehicle as the control target, and performs coupled control between the heat pump equipment of the automobile heating system and the warm air PTC heater, ensures good thermal comfort experience, optimally controls the compressor speed in the heat pump equipment, maximizes the energy efficiency and NVH performance without increasing the cost, and improves the endurance and comfort.

[0084] It should be understood that the size of the serial number of each step in the above embodiment does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0085] In an embodiment, the control method in any of the above embodiments can also be applied to a car heating system as shown in Figure 6 The system comprises a heating circuit formed by a sequence of communication of an electric compressor 1, an indoor condenser 3, a first electronic expansion valve 7, an outdoor condenser 11, a three-way valve 9, and a gas-liquid separator 8, wherein both ends of the first electronic expansion valve 7 are connected to an electromagnetic valve 6, a fan 10 is arranged near the outdoor condenser 11, one port of the three-way valve 9 is connected to one port of a second electronic expansion valve 12 through a pipeline, the other port of the electronic expansion valve 12 is connected to one port of an evaporator 4 through a pipeline, and the other port of the evaporator 4 is connected to an inlet port of the gas-liquid separator 8 and an outlet port of the three-way valve 9 through a pipeline. A wind-warming PTC heater 2 is arranged near the indoor condenser 3, and a blower 5 is arranged near the evaporator 4. The control method of the car heating system described above can be applied to the car heating system in Figure 6 The control method obtains relevant parameters of the electric compressor 1, the wind-warming PTC heater 2, the blower 5, and other devices in the system to control the operation of the compressor 1 and the wind-warming PTC heater.

[0086] In an embodiment, a control device for a car heating system is provided, which corresponds to the control method of the car heating system in the above embodiments. As shown in Figure 4 The control device comprises a first rotation speed calculation module 41, a second rotation speed calculation module 42, an optimal rotation speed calculation module 43, and a rotation speed control module 44. The functions of each module are described in detail as follows:

[0087] The first rotation speed calculation module 41 is configured to determine a first compressor rotation speed interval when the heating efficiency of a heat pump device in the car heating system is higher than the heating efficiency of a PTC heater at a current ambient temperature of the car heating system.

[0088] The second rotation speed calculation module 42 is configured to determine a second compressor rotation speed interval corresponding to each gear of a blower in the car heating system according to the masking effect of the blower on the noise of the compressor at each gear, and a resonance rotation speed interval that is not allowed in the whole vehicle.

[0089] The optimal rotation speed calculation module 43 is configured to determine an optimal compressor rotation speed interval according to the intersection of the first compressor rotation speed interval and the second compressor rotation speed interval.

[0090] The rotation speed control module 44 is configured to control the rotation speed of the compressor of the car heating system within the optimal compressor rotation speed interval, so that the temperature in the vehicle reaches a preset target temperature.

[0091] Optionally, the first rotation speed calculation module 41 comprises:

[0092] The acquisition sub-module is configured to acquire the heating capacity and the power consumption of the heat pump device at different compressor rotating speeds under the current ambient temperature of the automobile heating system;

[0093] The variable calculation sub-module is configured to determine the heating capacity variation and the power consumption variation of the heat pump device at the preset N compressor rotating speed variables according to the heating capacity and the power consumption of the heat pump device at the different compressor rotating speeds, where N is greater than or equal to 2;

[0094] The efficiency calculation sub-module is configured to determine the heating efficiency of the heat pump device at the preset N compressor rotating speed variables according to the heating capacity variation and the power consumption variation of the heat pump device at the preset N compressor rotating speed variables.

[0095] The first rotating speed calculation sub-module is configured to acquire the heating efficiency of the PTC heater in the automobile heating system, determine N1 compressor rotating speed variables when the heating efficiency of the heat pump device is greater than the heating efficiency of the PTC heater, where N1 is less than N, and determine a first compressor rotating speed interval.

[0096] Optionally, the efficiency calculation sub-module includes:

[0097] The curve calculation unit is configured to determine the heating capacity variation curve and the power consumption variation curve of the heat pump device at the preset N compressor rotating speed variables.

[0098] The heating efficiency calculation unit is configured to calculate the ratio of the heating capacity variation and the power consumption variation of the heat pump device at the preset N compressor rotating speed variables according to the heating capacity variation curve and the power consumption variation curve, and obtain the heating efficiency of the heat pump device at the preset N compressor rotating speed variables.

[0099] Optionally, the second rotating speed calculation module 42 includes:

[0100] The noise value sub-module is configured to acquire the noise value of the blower at each gear in the automobile heating system, and the noise value of the compressor in the automobile heating system at each rotating speed.

[0101] The rotating speed scanning sub-module is configured to determine the compressor rotating speed range corresponding to each gear of the blower when the noise value in the automobile is less than or equal to the noise value of the blower at each gear.

[0102] The second rotating speed calculation sub-module is configured to remove the resonance rotating speed interval that needs to be avoided by the whole vehicle from the compressor rotating speed range corresponding to each gear of the blower, and obtain a second compressor rotating speed interval corresponding to each gear of the blower.

[0103] Optionally, the rotation speed regulation module 44 comprises:

[0104] A first speed-up regulation sub-module is configured to control the compressor of the automotive heating system to work at the lowest rotation speed in the optimal compressor rotation speed range, monitor the real-time temperature in the vehicle, and gradually increase the rotation speed on the basis of the lowest rotation speed in the optimal compressor rotation speed range when the real-time temperature is less than the preset target temperature to obtain a requested first target rotation speed, and control the compressor of the automotive heating system to work at the first target rotation speed until the real-time temperature is not less than the preset target temperature.

[0105] Optionally, the rotation speed regulation module 44 further comprises:

[0106] A second speed-up regulation sub-module is configured to control the compressor of the automotive heating system to work at the upper limit rotation speed of the resonance rotation speed range when the first target rotation speed is in the resonance rotation speed range.

[0107] A third speed-up regulation sub-module is configured to control the compressor of the automotive heating system to work at the highest rotation speed in the optimal compressor rotation speed range when the first target rotation speed exceeds the highest rotation speed in the optimal compressor rotation speed range.

[0108] Optionally, the rotation speed regulation module 44 further comprises:

[0109] A first heater control sub-module is configured to control the compressor of the automotive heating system to work at the highest rotation speed, and if it is detected that the real-time temperature is less than the target temperature, start the air-warming PTC heater of the automotive heating system to work so that the real-time temperature is not less than the target temperature.

[0110] A second heater control sub-module is configured to, if it is detected that the real-time temperature is greater than the target temperature, control the air-warming PTC heater to reduce the output power or turn off the air-warming PTC heater when the air-warming PTC heater is in the started state.

[0111] A speed-down regulation sub-module is configured to, if it is detected again that the real-time temperature is greater than the target temperature, gradually reduce the rotation speed on the basis of the current rotation speed of the compressor to obtain a requested second target rotation speed, and control the compressor of the automotive heating system to work at the second target rotation speed until the real-time temperature is not greater than the target temperature.

[0112] Optionally, the speed control module 44 is further configured to repeat the steps in the first speed-increasing adjustment submodule, the second speed-increasing adjustment submodule, the third speed-increasing adjustment submodule, the first heater control submodule, the second heater control submodule, and the speed-reducing adjustment submodule according to the real-time temperature and the target temperature, so as to realize the coupled closed-loop control of the compressor and the air-heated PTC heater.

[0113] Specific limitations regarding the control device for an automotive heating system can be found in the above description of the control method for automotive heating systems, and will not be repeated here. Each module in the aforementioned control device for an automotive heating system can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware or independent of the processor in a computer device, or stored in software in the memory of a computer device, so that the processor can call and execute the corresponding operations of each module.

[0114] In one embodiment, Figure 5 This is a schematic diagram of the structure of a computer device provided in Embodiment 4 of the present invention. Figure 5 As shown, the computer device of this embodiment includes: at least one processor ( Figure 5 Only one is shown in the diagram), a memory, and a computer program stored in the memory and executable on at least one processor, which, when executed by the processor, implements the steps in any of the above-described health prediction method embodiments.

[0115] This computer device may include, but is not limited to, a processor and memory. Those skilled in the art will understand that... Figure 5 The examples of computer devices are merely examples and do not constitute a limitation on computer devices. Computer devices may include more or fewer components than shown in the illustration, or combinations of certain components, or different components, such as network interfaces, displays, and input devices.

[0116] The processor referred to can be a CPU, but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0117] The memory includes a readable storage medium, an internal memory, etc., wherein the internal memory can be a memory of the computer device, and the internal memory provides an environment for running of the operating system and the computer-readable instructions in the readable storage medium. The readable storage medium can be a hard disk of the computer device, and in other embodiments, can also be an external storage device of the computer device, for example, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. Further, the memory can include both an internal storage unit of the computer device and an external storage device. The memory is used to store an operating system, an application program, a BootLoader, data, and other programs, such as program codes of computer programs, etc. The memory can also be used to temporarily store data that has been output or will be output.

[0118] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be realized in the form of hardware or software functional unit. In addition, the specific name of each functional unit and module is only for easy distinction, and does not limit the protection scope of the present application. The specific working process of the unit and module in the above-mentioned device can refer to the corresponding process in the foregoing method embodiments, which will not be described here. If the integrated unit is realized in the form of software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the present application realizes all or part of the processes in the above-mentioned embodiment methods, which can be completed by a computer program to instruct related hardware. The computer program can be stored in a computer readable storage medium, and when the processor executes the computer program, the steps of the above-mentioned method embodiments can be realized. The computer program includes computer program code, which can be in the form of source code, object code, executable file or some intermediate form. The computer readable medium at least includes any entity or device capable of carrying computer program code, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium. For example, U disk, mobile hard disk, magnetic disk or optical disk, etc. In some jurisdictions, according to legislation and patent practice, the computer readable medium cannot be electrical carrier signal and telecommunication signal.

[0119] The present application realizes all or part of the processes in the above-mentioned embodiment methods, which can also be completed by a computer program product. When the computer program product runs on the computer device, it makes the computer device execute the steps in the above-mentioned method embodiments.

[0120] In the above-mentioned embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in detail in a certain embodiment can be referred to the related description of other embodiments.

[0121] In an embodiment, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program. When the computer program is executed by a processor, the control method of the automobile heating system in the above-mentioned embodiments is realized, for exampleFigure 2 The S201-S204 shown, to avoid repetition, hereinafter will not be described. Alternatively, the computer program is executed by the processor to realize the functions of each module / unit in the above-mentioned embodiment of the control device of the automobile heating system, for example Figure 4 The control functions of the automobile heating system shown, to avoid repetition, hereinafter will not be described.

[0122] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments of each method. Any reference to memory, storage, database or other medium used in the embodiments provided by the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM) and the like.

[0123] The present application can also be implemented by a computer program product when the computer program product is run on a computer device, so that the computer device can realize the steps in the above-mentioned method embodiments.

[0124] In the above-mentioned embodiments, the description of each embodiment has its own focus, and the parts not described or recorded in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0125] Those skilled in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0126] In the embodiments of the present application, it should be understood that the disclosed apparatus / computer device and method can be implemented in other manners. For example, the embodiments of the apparatus / computer device described above are merely schematic; for example, the division of the modules or units can not be strict, and some modules or units can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the modules or units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0127] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0128] The above-described embodiments are merely used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A control method for an automotive heating system, characterized in that, The control method includes the following steps: At the current ambient temperature of the vehicle heating system, determine the first compressor speed range when the heating efficiency of the heat pump device in the vehicle heating system is higher than that of the PTC heater; According to the masking effect of the blower on the compressor noise at each gear in the vehicle heating system and the resonance speed range not allowed for the whole vehicle, determine the second compressor speed range corresponding to each gear of the blower; Determine the optimal compressor speed range according to the intersection of the first compressor speed range and the second compressor speed range; Control the speed of the compressor in the vehicle heating system to operate within the optimal compressor speed range, so as to make the temperature inside the vehicle reach the preset target temperature; including the following speed increase adjustment steps: First, control the compressor in the vehicle heating system to work at the lowest speed within the optimal compressor speed range, monitor the real-time temperature inside the vehicle. When the real-time temperature is less than the preset target temperature, gradually increase the speed based on the lowest speed within the optimal compressor speed range to obtain the requested first target speed, and control the compressor in the vehicle heating system to work according to the first target speed until the real-time temperature is not less than the preset target temperature.

2. The control method for an automotive heating system according to claim 1, characterized in that, The step of determining the first compressor speed range when the heating efficiency of the heat pump device in the vehicle heating system is higher than that of the PTC heater at the current ambient temperature of the vehicle heating system includes: At the current ambient temperature of the vehicle heating system, obtain the heat output and power consumption of the heat pump device in the vehicle heating system at different compressor speeds; According to the heat output and power consumption of the heat pump device in the vehicle heating system at different compressor speeds, determine the heat output change amount and power consumption change amount of the heat pump device at N preset compressor speed variables, N≥2; According to the heat output change amount and power consumption change amount of the heat pump device at the N preset compressor speed variables, determine the heating efficiency of the heat pump device at the N preset compressor speed variables; Obtain the heating efficiency of the PTC heater in the vehicle heating system, determine N1 compressor speed variables when the heating efficiency of the heat pump device is greater than that of the PTC heater, N1<N, so as to determine the first compressor speed range.

3. The control method for an automotive heating system according to claim 2, characterized in that, According to the heat output change amount and power consumption change amount of the heat pump device at the N preset compressor speed variables, determining the heating efficiency of the heat pump device at the N preset compressor speed variables includes: Determine the heat output change amount curve and power consumption change amount curve of the heat pump device at the N preset compressor speed variables; According to the heat output change amount curve and power consumption change amount curve, calculate the ratio of the heat output change amount and power consumption change amount of the heat pump device at the N preset compressor speed variables to obtain the heating efficiency of the heat pump device at the N preset compressor speed variables.

4. The control method for an automotive heating system according to claim 1, characterized in that, Based on the masking effect of the blower on compressor noise at each speed setting in the automotive heating system, and the unacceptable resonance speed range for the entire vehicle, a second compressor speed range corresponding to each speed setting of the blower is determined, including: The noise levels of the blower in the automotive heating system at each gear position and the in-vehicle noise levels generated by the compressor in the automotive heating system at each speed are obtained. Determine the compressor speed range corresponding to each gear of the blower when the in-vehicle noise value is less than or equal to the noise value of the blower at each gear. By removing the preset resonance speed range that the entire vehicle needs to avoid from the compressor speed range corresponding to each gear of the blower, a second compressor speed range corresponding to each gear of the blower is obtained.

5. The control method for an automotive heating system according to claim 1, characterized in that, The speed adjustment steps also include: When the first target speed is within the resonant speed range, the compressor of the vehicle heating system is controlled to operate at the upper limit speed of the resonant speed range. When the first target speed exceeds the highest speed within the optimal compressor speed range, the compressor of the vehicle heating system is controlled to operate at the highest speed.

6. The control method for an automotive heating system according to claim 5, characterized in that, The control method further includes the following deceleration adjustment steps: After the compressor of the vehicle heating system is controlled to operate at the maximum speed, if the real-time temperature is detected to be lower than the target temperature, the air-heated PTC heater of the vehicle heating system is started to operate, so that the real-time temperature is not lower than the target temperature. When the real-time temperature is detected to be greater than the target temperature, if the air-heated PTC heater is in the start state, the air-heated PTC heater is controlled to reduce its output power or be turned off. When the real-time temperature is detected to be greater than the target temperature again, the compressor speed is gradually reduced based on the current speed to obtain the requested second target speed. The compressor of the vehicle heating system is then controlled to operate at the second target speed until the real-time temperature is not greater than the target temperature.

7. The control method for an automotive heating system according to claim 6, characterized in that, The control method further includes: Based on the real-time temperature and the target temperature, the speed increase adjustment step and the speed decrease adjustment step are repeated to achieve coupled closed-loop control of the compressor and the PTC heater.

8. A control device for an automotive heating system, characterized in that, include: The first speed calculation module is used to determine the first compressor speed range when the heating efficiency of the heat pump equipment in the vehicle heating system is higher than the heating efficiency of the PTC heater, under the current ambient temperature of the vehicle heating system. The second speed calculation module is used to determine the second compressor speed range corresponding to each gear of the blower based on the masking effect of the blower on the compressor noise in each gear of the vehicle heating system and the resonance speed range that the whole vehicle is not allowed to resonate. The optimal speed calculation module is used to determine the optimal compressor speed range based on the intersection of the first compressor speed range and the second compressor speed range; The speed control module is used to control the compressor of the vehicle heating system to operate within the optimal compressor speed range, so that the interior temperature reaches the preset target temperature. The speed control module includes a first speed increase adjustment submodule, which is used to first control the compressor of the vehicle heating system to operate at the lowest speed within the optimal compressor speed range, monitor the real-time temperature inside the vehicle, and when the real-time temperature is less than the preset target temperature, gradually increase the speed based on the lowest speed within the optimal compressor speed range to obtain the requested first target speed, and control the compressor of the vehicle heating system to operate at the first target speed until the real-time temperature is not less than the preset target temperature.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the control method for the automotive heating system according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the control method of the automobile heating system according to any one of claims 1 to 7.

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