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

Abstract

The invention discloses a control method and device of an automobile heating system, computer equipment and a storage medium, and the control method comprises the steps that at the current environment temperature of the automobile heating system, a first compressor rotating speed interval when the heating efficiency of heat pump equipment in the automobile heating system is higher than the heating efficiency of a PTC heater is determined; determining a second compressor rotating speed interval corresponding to each gear of the air blower according to the masking effect of the air blower on the noise of the compressor under each gear in the automobile heating system and a resonance rotating speed interval not allowed by the whole automobile; determining an optimal compressor rotating speed interval according to the intersection of the first compressor rotating speed interval and the second compressor rotating speed interval; and a compressor of the automobile heating system is controlled to operate at the rotating speed within the optimal compressor rotating speed interval, so that the temperature in the automobile reaches the preset target temperature. While the heating energy efficiency is improved, the NVH performance in the automobile is considered, and therefore the requirements of a user for low noise and rapid heating are met.

Description

Technical Field

[0001] The present invention relates to the field of automobile air conditioning, and in particular to a control method, device, computer equipment and storage medium for an automobile heating system. Background Art

[0002] The automotive heat pump system in the prior art usually uses a heat pump and a water-heating PTC heater for heating. The target COPCR compressor speed range of the heat pump system is pre-calibrated. Within this range, the heat pump efficiency is higher than the PTC energy efficiency. If the heating demand cannot be met within the target COPCR compressor speed, the water-heating PTC heating is enabled. The heat pump compressor speed and the water-heating PTC are coupled and controlled to achieve the purpose of improving energy efficiency. However, the shortcoming of the heating control method of this system is that, in order to improve energy efficiency, the speed of the compressor is controlled too high, resulting in greater noise and vibration in the car, and there are NVH problems in the car. At the same time, the heating rate of the water-heating PTC heater is also slow. For scenes that require rapid heating, it cannot provide users with a better thermal comfort experience. Summary of the invention

[0003] The embodiments of the present invention provide a control method, device, computer equipment and storage medium for an automobile heating system to solve the problem that the existing automobile heating system, while improving energy efficiency, causes large noise and vibration in the vehicle, has NVH problems in the vehicle, and cannot meet the user's needs for low noise and rapid heating.

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

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

[0006] According to the masking effect of the blower on the compressor noise at each gear position in the automobile heating system and the resonance speed range not allowed by the whole vehicle, determining the second compressor speed range corresponding to each gear position of the blower;

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

[0008] The compressor of the automobile heating system is controlled to operate at a speed within the optimal compressor speed range, so that the temperature inside the vehicle reaches a preset target temperature.

[0009] A control device for a vehicle heating system, comprising:

[0010] A first speed calculation module, for determining, under the current ambient temperature of the automobile heating system, a first compressor speed interval when the heating efficiency of the heat pump device in the automobile heating system is higher than the heating efficiency of the PTC heater;

[0011] A second speed calculation module is used to determine a second compressor speed range corresponding to each gear of the blower according to the masking effect of the blower on the compressor noise at each gear in the automobile heating system and the resonance speed range not allowed by the whole vehicle;

[0012] an optimal speed calculation module, configured to determine an optimal compressor speed interval according to an intersection of the first compressor speed interval and the second compressor speed interval;

[0013] The speed control module is used to control the speed of the compressor of the automobile heating system to operate within the optimal compressor speed range, so that the temperature inside the vehicle reaches a preset target temperature.

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

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

[0016] The control method, device, computer equipment and storage medium of the above-mentioned automobile heating system determine a first compressor speed range for the operation of the compressor when the heating energy efficiency is higher than the heating energy efficiency of the PCT heater, and a second compressor speed range for the operation of the compressor when the noise and vibration of the vehicle do not affect the riding comfort. The intersection of the ranges is taken to obtain the optimal compressor speed range, and then the compressor can be controlled to operate within the range, so that the NVH performance in the vehicle is taken into account while improving the heating energy efficiency, thereby meeting the user's needs for low noise and rapid heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0018] Figure 1 is a schematic diagram of an application environment of a control method for an automobile heating system in one embodiment of the present invention; Figure 2 is a flow chart of a method for controlling a vehicle heating system in one embodiment of the present invention; Figure 3 is a graph showing a heating capacity variation curve and a power consumption variation curve of a heat pump device in one embodiment of the present invention; Figure 4 is a schematic diagram of a control device for a vehicle heating system according to an embodiment of the present invention; Figure 5 is a schematic diagram of a computer device in one embodiment of the present invention; Figure 6 is a schematic diagram of a vehicle heating system in one embodiment of the present invention; Explanation of symbols: 1. Electric compressor; 2. Air-heating PTC heater; 3. In-vehicle condenser; 4. Evaporator; 5. Blower; 6. Solenoid valve; 7. First electronic expansion valve; 8. Gas-liquid separator; 9. Three-way valve; 10. Fan; 11. Out-vehicle condenser; 12. Second electronic expansion valve.

[0023] Explanation of symbols:

[0024] 1. Electric compressor; 2. Air-heating PTC heater; 3. In-vehicle condenser; 4. Evaporator; 5. Blower; 6. Solenoid valve; 7. First electronic expansion valve; 8. Gas-liquid separator; 9. Three-way valve; 10. Fan; 11. Out-vehicle condenser; 12. Second electronic expansion valve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The control method of the automobile heating system provided by the embodiment of the present invention can be applied as follows: Figure 1 Specifically, the control method of the automobile heating system is applied in the automobile heating system, and the automobile heating system includes: Figure 1 The heat pump device and PCT heater shown communicate with the controller respectively to achieve control of the compressor of the heat pump device and the PCT heater to take into account both energy efficiency and in-vehicle NVH performance.

[0027] In one embodiment, if Figure 2As shown, a control method for a vehicle heating system is provided, and the method is applied in Figure 1 The automobile heating system in FIG. 1 is taken as an example to illustrate, and the steps are as follows:

[0028] S201, under the current ambient temperature of the automobile heating system, determining a first compressor speed interval when the heating efficiency of the heat pump device in the automobile heating system is higher than the heating efficiency of the PTC heater;

[0029] Among them, since the automobile heating system is equipped with a heat pump device and a 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, it is necessary to control the compressor to work in different speed ranges, measure the heating efficiency of the compressor at different speeds, and compare it with the heating efficiency of the PTC heater, and select the high-efficiency speed range when the heating efficiency of the heat pump device is greater than the heating efficiency of the PTC heater as the first compressor speed range.

[0030] S202, determining a second compressor speed range corresponding to each gear of the blower according to the masking effect of the blower on the compressor noise at each gear in the automobile heating system and a resonance speed range not allowed by the whole vehicle;

[0031] Among them, the masking effect of the blower on the compressor noise means that when the automobile heating system controls the blower and the compressor to work, the noise generated by the blower working in the corresponding gear can mask a part of the noise generated by the compressor working in a certain speed range, and the masked noise value is less than or equal to the noise value generated by the blower. The unallowed resonance speed range of the whole vehicle refers to a speed range that the compressor needs to avoid in order to avoid resonance of the whole vehicle.

[0032] When the compressor operates within the second compressor speed range, its noise will be masked by the noise generated by the blower operating simultaneously, and will not cause resonance in the vehicle, thereby ensuring that the vehicle will not generate large noise and vibration.

[0033] S203, determining an optimal compressor speed range according to the intersection of the first compressor speed range and the second compressor speed range;

[0034] Among them, the first compressor speed range is used to characterize the compressor operating speed range when the heating energy efficiency is higher than the heating energy efficiency of the PCT heater, and the second compressor speed range is used to characterize the compressor speed range when the noise and vibration of the vehicle do not affect the riding comfort when the compressor is working. Therefore, by taking the intersection of the two speed ranges, the optimal compressor speed range that takes into account both energy efficiency and vehicle NVH performance can be obtained.

[0035] S204, controlling the compressor of the automobile heating system to operate at a speed within the optimal compressor speed range, so that the temperature inside the vehicle reaches a preset target temperature.

[0036] Among them, since any speed of the compressor within the optimal compressor speed range can achieve the purpose of rapid heating, and the higher the speed of the compressor, the correspondingly lower the NVH performance of the vehicle; therefore, a lower speed can be selected within the optimal compressor speed range to control the compressor operation so that the temperature inside the vehicle reaches the preset target temperature.

[0037] The control method of the automobile heating system of this embodiment determines a first compressor speed range for the operation of the compressor when the heating energy efficiency is higher than the heating energy efficiency of the PCT heater, and a second compressor speed range for the operation of the compressor when the noise and vibration of the vehicle do not affect the riding comfort. The intersection of the ranges is taken to obtain the optimal compressor speed range, and the compressor can be controlled to operate within the range, so that the NVH performance in the vehicle is taken into account while improving the heating energy efficiency, thereby meeting the user's needs for low noise and rapid heating.

[0038] In one embodiment, in step S201, that is, under the current ambient temperature of the automobile heating system, determining the first compressor speed interval when the heating efficiency of the heat pump device in the automobile heating system is higher than the heating efficiency of the PTC heater specifically includes:

[0039] S301, obtaining the heating capacity and power consumption of the heat pump device at different compressor speeds under the current ambient temperature of the automobile heating system;

[0040] Among them, the heating capacity and power consumption of the heat pump equipment at various speeds of the compressor can be measured through actual vehicle experiments.

[0041] S302, determining a change in heating capacity and a change in power consumption of the heat pump device under N preset compressor speed variables according to the heating capacity and power consumption of the heat pump device under different compressor speeds, where N≥2;

[0042] Among them, N compressor speed variables can be set, such as a variable where the first compressor speed increases to a second compressor speed, a variable where the second compressor speed increases to a third compressor speed, etc. Then, the heating capacity difference and power consumption difference of the heat pump device corresponding to the compressor speed before and after the change are calculated to obtain the heating capacity change and power consumption change of the heat pump device.

[0043] S303, determining the heating efficiency of the heat pump device under the preset N compressor speed variables according to the heating amount change and the power consumption change of the heat pump device under the preset N compressor speed variables;

[0044] Among them, the heating efficiency of the heat pump device can be measured by the ratio of the change in the heating capacity to the change in the power consumption of the heat pump device. For the change in the heating capacity and the change in the power consumption of the heat pump device under N compressor speed variables, the heating efficiency of the heat pump device under N compressor speed variables can be obtained.

[0045] S304. Obtain the heating efficiency of the PTC heater in the vehicle heating system, and determine N1 compressor speed variables when the heating efficiency of the heat pump device is greater than that of the PTC heater, where N1 < N, so as to determine the first compressor speed range.

[0046] Among them, the heating efficiency of the PTC heater can be measured through component tests. After determining the heating efficiency of the heat pump device and the heating efficiency of the PTC heater under N compressor speed variables at a certain ambient temperature of the vehicle, the heating efficiency of the PTC heater is compared with the heating efficiency of the heat pump device under each compressor speed variable respectively. N1 compressor speed variables are selected from the N compressor speed variables such that the heating efficiency of the heat pump device under these N1 compressor speed variables is greater than that of the PTC heater. Finally, the first compressor speed range is determined through these N1 compressor speed variables.

[0047] The control method of the vehicle heating system in this embodiment defines the heating efficiency of the heat pump device, and determines the heating efficiency of the heat pump device under different compressor speed variables through the heating capacity and power consumption of the heat pump device at different compressor speeds, and compares it with the heating efficiency of the PTC heater, so as to determine the first compressor speed range with higher heating energy efficiency.

[0048] In one embodiment, in step S303, that is, according to the change in the heating capacity and the change in the power consumption of the heat pump device under the preset N compressor speed variables, determining the heating efficiency of the heat pump device under the preset N compressor speed variables includes:

[0049] S401. Determine the curve of the change in the heating capacity and the curve of the change in the power consumption of the heat pump device under the preset N compressor speed variables;

[0050] S402. According to the curve of the change in the heating capacity and the curve of the change in the power consumption, calculate the ratio of the change in the heating capacity to the change in the power consumption of the heat pump device under the preset N compressor speed variables, and obtain the heating efficiency of the heat pump device under the preset N compressor speed variables.

[0051] In step S401, a heating amount change curve and a power consumption change curve of the heat pump device are drawn according to the heating amount change and the power consumption change of the heat pump device under the preset N compressor speed variables; wherein the heating amount change curve is used to represent the curve of the heating amount change with the compressor speed, and the power consumption change curve is used to represent the curve of the power consumption change with the compressor speed, such as Figure 3 shown.

[0052] like 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 PTC heater is preset to 1. When the compressor speed is ≤4000r / min, the heating efficiency COPEQ of the heat pump equipment is ≥δ, that is, when the ambient temperature is 0°C, the compressor speed within 4000rpm is the high-efficiency speed range of the heat pump equipment, that is, the first compressor speed range.

[0053] In one embodiment, in step S202, according to the masking effect of the blower on the compressor noise at each gear position in the automobile heating system and the resonance speed range not allowed by the whole vehicle, determining the second compressor speed range corresponding to each gear position of the blower includes:

[0054] S501, obtaining the noise value of the blower at each gear in the automobile heating system, and the in-vehicle noise value generated by the compressor at each speed in the automobile heating system;

[0055] S502, determining a 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;

[0056] S503, removing the resonance speed range that the preset vehicle needs to avoid from the compressor speed range corresponding to each gear of the blower, to obtain a second compressor speed range corresponding to each gear of the blower.

[0057] In the above step S502, the compressor speed range allowed in the gear can be determined according to the masking effect of the blower noise in each gear on the compressor noise. The compressor speed range can be the compressor speed range corresponding to each gear of the blower when the noise value in the vehicle is less than the noise value of the blower in each gear by a preset noise deviation value (for example, 5db), or it can be the compressor speed range corresponding to each gear of the blower when the noise value in the vehicle is equal to the noise value of the blower in each gear.

[0058] In the above step S503, the resonant speed range that the whole vehicle needs to avoid is the resonant speed range (i.e., frequency avoidance range) that the compressor needs to avoid when the steering wheel, seat, and body resonate. For example, when the steering wheel mode is 40Hz and the compressor speed is around 2400r / min, the steering wheel resonates and needs to avoid 2200r / min-2600r / min. Based on the noise and vibration performance inside the vehicle, the optimal NVH speed range of the compressor (i.e., the second compressor speed range) is obtained as shown in Table 1.

[0059] Table 1 Optimal NVH speed range of compressor under each blower gear

[0060]

[0061] According to the above step S203, Figure 3 The intersection of the first compressor speed range determined in and the second compressor speed range determined in Table 1 is taken, from which it can be concluded that when the external ambient temperature is 0°C, under each blower gear, the compressor speed range that takes into account both energy efficiency and NVH (i.e., the optimal compressor speed range) is as shown in Table 2.

[0062] Table 2 Compressor speed range that takes into account both optimal energy efficiency and NVH performance

[0063]

[0064] The control method of the automobile heating system of the present embodiment uses the masking effect of the blower noise on the compressor noise in the heat pump equipment according to the noise levels of the various gears of the blower in the car, and controls the blower gear and the compressor speed in a linkage manner. The resonance speed range that needs to be avoided is determined according to the vibration conditions of the steering wheel, seats and other components in the car at various compressor speeds, and finally the compressor speed range allowed at each air volume gear is obtained. Finally, the speed range is intersected with the pre-set high-efficiency speed range of the heat pump equipment to obtain the optimal compressor speed range based on optimal energy efficiency and NVH performance. When heating the passenger compartment, the compressor is controlled to always operate in the above-mentioned optimal compressor speed range.

[0065] In one embodiment, step S204, i.e., controlling the compressor of the automobile heating system to operate at a speed within the optimal compressor speed range so that the temperature inside the vehicle reaches a preset target temperature, includes the following speed adjustment steps:

[0066] 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 car, and when the real-time temperature is lower 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 automobile heating system to operate at the first target speed until the real-time temperature is not lower than the preset target temperature.

[0067] The lowest speed in the optimal compressor speed range is a lower speed that can start the compressor, such as 20r / min, 40r / min or 60r / min, etc., which can be set according to the situation. When the compressor is controlled to run at the lowest speed, the vehicle interior temperature and the target temperature are monitored. If the vehicle interior temperature is ≤ the target temperature, the compressor is requested to increase the speed, otherwise, the current speed is maintained.

[0068] In one embodiment, the speed increasing step further comprises:

[0069] S602, when the first target speed is within the resonance speed range, controlling the compressor of the vehicle heating system to operate at an upper limit speed of the resonance speed range;

[0070] S603: When the first target speed exceeds the highest speed in the optimal compressor speed range, the compressor of the automobile heating system is controlled to operate at the highest speed.

[0071] Among them, when the first target speed requested in the above step S601 is continuously increased, and the first target speed reaches the resonant speed range for the first time, in order to maximize the NVH performance in the vehicle, it is necessary to control the compressor to operate at the upper limit speed of the resonant speed range. For example, the compressor operates at the upper limit speed of 2600r / min of the resonant speed range in Table 2.

[0072] In one embodiment, the control method further includes the following speed reduction adjustment step:

[0073] S701, after controlling the compressor of the automobile heating system to operate at the maximum speed, if it is detected that the real-time temperature is lower than the target temperature, starting the air-heating PTC heater of the automobile heating system to operate, so that the real-time temperature is not lower than the target temperature;

[0074] For example, according to Table 2, assuming that the blower is set to gear 3, if the requested compressor speed is between 2400r / min-2600r / min, the compressor is controlled to operate at 2600r / min. If the requested compressor speed exceeds the gear 3 speed limit of 3600r / min in Table 2, the compressor is controlled to operate at 3600r / min. At this time, if the real-time temperature in the car is still lower than the target temperature, the air-heating PTC heater is started for supplementary heating until the temperature in the car reaches the target temperature.

[0075] S702, when it is detected that the real-time temperature is greater than the target temperature, if the air-heating PTC heater is in the start-up state, controlling the air-heating PTC heater to reduce the output power or turning off the air-heating PTC heater;

[0076] S703, when it is detected again that the real-time temperature is greater than the target temperature, the speed is gradually reduced based on the current speed of the compressor to obtain the requested second target speed, and the compressor of the vehicle heating system is controlled to operate at the second target speed until the real-time temperature is no greater than the target temperature.

[0077] The control method of the automobile heating system of this embodiment controls the compressor to always operate in the optimal compressor speed range when heating the passenger compartment, and cooperates with the air-heating PTC heater to perform closed-loop control with the temperature inside the vehicle as the target, and preferentially uses the heat pump equipment of the automobile heating system for air-conditioning heating. When the heat pump equipment cannot meet the heating demand, the air-heating PTC heater is immediately started. Since the heat pump equipment has the characteristics of high energy efficiency and the air-heating PTC heater has fast heating, it can achieve the best balance between energy saving, NVH performance and thermal comfort.

[0078] In one embodiment, the control method further includes:

[0079] According to the real-time temperature and the target temperature, the speed increase adjustment step and the speed decrease adjustment step are repeated to implement coupled closed-loop control of the compressor and the air-heating PTC heater.

[0080] The control method of the automobile heating system of the present embodiment takes the in-car temperature as the control target and performs coupling control between the heat pump device and the air-heating PTC heater of the automobile heating system. While ensuring a good thermal comfort experience, the compressor speed in the heat pump device is optimized and controlled. Without increasing costs, it can maximize the balance between energy efficiency and NVH performance, thereby improving endurance and comfort.

[0081] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0082] In one embodiment, the control method in any of the above embodiments can also be applied to Figure 6 The automobile heating system shown includes: a heating circuit formed by an electric compressor 1, an in-car condenser 3, a first electronic expansion valve 7, an out-of-car condenser 11, a three-way valve 9, and a gas-liquid separator 8 connected in sequence, wherein both ends of the first electronic expansion valve 7 are connected to the solenoid valve 6 at the same time, a fan 10 is arranged near the out-of-car condenser 11, one port of the three-way valve 9 is connected to one port of the second electronic expansion valve 12 through a pipeline, the other port of the electronic expansion valve 12 is connected to one port of the evaporator 4 through a pipeline, and the other port of the evaporator 4 is connected to the inlet port of the gas-liquid separator 8 and the outlet port of the three-way valve 9 through a pipeline. The air-heating PTC heater 2 is arranged near the in-car condenser 3, and the blower 5 is arranged near the evaporator 4. The aforementioned control method of the automobile heating system can be applied Figure 6 The automobile heating system in the system obtains relevant parameters of the electric compressor 1, the air-heating PTC heater 2, the blower 5 and other devices in the system to control the operation of the compressor 1 and the air-heating PTC heater.

[0083] In one embodiment, a control device for a vehicle heating system is provided, and the control device corresponds one-to-one with the control method for the vehicle heating system in the above embodiment. Figure 4 As shown, the control device includes a first speed calculation module 41, a second speed calculation module 42, an optimal speed calculation module 43 and a speed control module 44. The detailed description of each functional module is as follows:

[0084] A first speed calculation module 41 is used to determine, under the current ambient temperature of the automobile heating system, a first compressor speed interval when the heating efficiency of the heat pump device in the automobile heating system is higher than the heating efficiency of the PTC heater;

[0085] A second speed calculation module 42 is used to determine a second compressor speed range corresponding to each gear of the blower according to the masking effect of the blower on the compressor noise at each gear in the automobile heating system and the resonance speed range not allowed by the whole vehicle;

[0086] An optimal speed calculation module 43, configured to determine an optimal compressor speed interval according to an intersection of the first compressor speed interval and the second compressor speed interval;

[0087] The speed control module 44 is used to control the speed of the compressor of the automobile heating system to operate within the optimal compressor speed range, so that the temperature inside the vehicle reaches a preset target temperature.

[0088] Optionally, the first speed calculation module 41 includes:

[0089] A collection sub-module, configured to obtain the heat output and power consumption of the heat pump device at different compressor speeds under the current ambient temperature of the vehicle heating system;

[0090] A variable calculation sub-module, configured to determine the change in heat output and the change in power consumption of the heat pump device under N preset compressor speed variables according to the heat output and power consumption of the heat pump device at different compressor speeds, where N≥2;

[0091] An efficiency calculation sub-module, configured to determine the heating efficiency of the heat pump device under N preset compressor speed variables according to the change in heat output and the change in power consumption of the heat pump device under N preset compressor speed variables;

[0092] A first speed calculation sub-module, configured to obtain the heating efficiency of the PTC heater in the vehicle heating system, and determine N1 compressor speed variables when the heating efficiency of the heat pump device is greater than the heating efficiency of the PTC heater, where N1<N, so as to determine the first compressor speed range.

[0093] Optionally, the above efficiency calculation sub-module includes:

[0094] A curve calculation unit, configured to determine the curve of the change in heat output and the curve of the change in power consumption of the heat pump device under N preset compressor speed variables;

[0095] A heating efficiency calculation unit, configured to calculate the ratio of the change in heat output and the change in power consumption of the heat pump device under N preset compressor speed variables according to the curve of the change in heat output and the curve of the change in power consumption, so as to obtain the heating efficiency of the heat pump device under N preset compressor speed variables.

[0096] Optionally, the above second speed calculation module 42 includes:

[0097] A noise value sub-module, configured to obtain the noise values of the blowers at each gear in the vehicle heating system, and the in-vehicle noise values generated by the compressor in the vehicle heating system at each speed;

[0098] A speed scanning sub-module, configured to determine the compressor speed ranges corresponding to each gear of the blower when the in-vehicle noise value is less than or equal to the noise values of the blowers at each gear;

[0099] A second speed calculation sub-module, configured to remove the preset resonance speed ranges that need to be avoided by the whole vehicle from the compressor speed ranges corresponding to each gear of the blower, so as to obtain the second compressor speed ranges corresponding to each gear of the blower.

[0100] Optionally, the speed control module 44 includes:

[0101] The first speed increasing regulating submodule is used for first controlling the compressor of the automobile heating system to operate at the lowest speed within the optimal compressor speed range, monitoring the real-time temperature in the vehicle, and when the real-time temperature is lower than the preset target temperature, gradually increasing the speed based on the lowest speed within the optimal compressor speed range to obtain the requested first target speed, and controlling the compressor of the automobile heating system to operate at the first target speed until the real-time temperature is no lower than the preset target temperature.

[0102] Optionally, the speed control module 44 further includes:

[0103] a second speed increasing regulating submodule, configured to control the compressor of the automobile heating system to operate at an upper speed limit of the resonance speed interval when the first target speed is within the resonance speed interval;

[0104] The third speed increasing regulating submodule is used for controlling the compressor of the automobile heating system to operate at the maximum speed when the first target speed exceeds the maximum speed within the optimal compressor speed range.

[0105] Optionally, the speed control module 44 further includes:

[0106] a first heater control submodule, configured to control the compressor of the automobile heating system to operate at the maximum speed, and if it is detected that the real-time temperature is lower than the target temperature, start the air-heating PTC heater of the automobile heating system to operate, so that the real-time temperature is not lower than the target temperature;

[0107] A second heater control submodule is used for controlling the air-heating PTC heater to reduce output power or turn off the air-heating PTC heater when it is detected that the real-time temperature is greater than the target temperature and if the air-heating PTC heater is in a startup state;

[0108] The speed reduction regulation submodule is used to gradually reduce the speed based on the current speed of the compressor to obtain the requested second target speed when it is detected again that the real-time temperature is greater than the target temperature, and control the compressor of the vehicle heating system to operate at the second target speed until the real-time temperature is no greater than the target temperature.

[0109] Optionally, the speed control module 44 is also used to repeat the steps in the first speed increasing regulation submodule, the second speed increasing regulation submodule, the third speed increasing regulation submodule, the first heater control submodule, the second heater control submodule and the speed reduction regulation 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-heating PTC heater.

[0110] The specific definition of the control device of the automobile heating system can be found in the definition of the control method of the automobile heating system above, which will not be repeated here. Each module in the above-mentioned control device of the automobile heating system can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0111] 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), a memory, and a computer program stored in the memory and executable on at least one processor, wherein when the processor executes the computer program, the steps in any of the above-mentioned health prediction method embodiments are implemented.

[0112] The computer device may include, but is not limited to, a processor and a memory. Those skilled in the art will appreciate that Figure 5 This is merely an example of a computer device and does not constitute a limitation on the computer device. The computer device may include more or fewer components than those shown in the figure, or a combination of certain components, or different components. For example, it may also include a network interface, a display screen, and an input device.

[0113] The processor may be a CPU, or other general-purpose processors, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0114] The memory includes a readable storage medium, an internal memory, etc., wherein the internal memory may be the memory of a computer device, and the internal memory provides an environment for the operation of an operating system and computer-readable instructions in the readable storage medium. The readable storage medium may be a hard disk of a computer device, and in other embodiments may also be an external storage device of a computer device, for example, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on a computer device. Further, the memory may also include both an internal storage unit of a computer device and an external storage device. The memory is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as program codes of computer programs, etc. The memory may also be used to temporarily store data that has been output or is to be output.

[0115] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, 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. The functional units and modules in the embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention. The specific working process of the units and modules in the above-mentioned device can refer to the corresponding process in the above-mentioned method embodiment, which will not be repeated here. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned method embodiment can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device capable of carrying computer program code, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0116] The present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by a computer program product. When the computer program product runs on a computer device, the computer device can implement the steps in the above-mentioned method embodiment when executing.

[0117] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0118] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the control method of the automobile heating system in the above embodiment is implemented, for example Figure 2 S201-S204 shown are not described here in detail to avoid repetition. Alternatively, when the computer program is executed by the processor, the functions of each module / unit in the embodiment of the control device for the automobile heating system are realized, for example Figure 4 The control functions of the automobile heating system shown are not described here in detail to avoid repetition.

[0119] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and 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 embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), 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).

[0120] The present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by a computer program product. When the computer program product runs on a computer device, the computer device can implement the steps in the above-mentioned method embodiment when executing.

[0121] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0122] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0123] In the embodiments provided by the present invention, it should be understood that the disclosed devices / computer equipment and methods can be implemented in other ways. For example, the device / computer equipment embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0124] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0125] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for controlling a vehicle 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 that the temperature inside the vehicle reaches the preset target temperature.

2. The control method of the automobile 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 and power consumption change of the heat pump device at N preset compressor speed variables, N≥2; According to the heat output change and power consumption change 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 of the automobile heating system according to claim 2, characterized in that: According to the heat output change and power consumption change 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 curve and power consumption change curve of the heat pump device at the N preset compressor speed variables; According to the heat output change curve and power consumption change curve, calculate the ratio of the heat output change and power consumption change 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 of the automobile heating system according to claim 1, characterized in that: 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, determining the second compressor speed range corresponding to each gear of the blower includes: Obtain the noise value of the blower at each gear in the vehicle heating system and the in-vehicle noise value generated by the compressor in the vehicle heating system at each speed; 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; The resonance speed range that the preset vehicle needs to avoid is removed from the compressor speed range corresponding to each gear position of the blower to obtain a second compressor speed range corresponding to each gear position of the blower.

5. The control method of the automobile heating system according to claim 4, characterized in that: Controlling the compressor of the automobile heating system to operate at a speed within the optimal compressor speed range so that the temperature inside the vehicle reaches a preset target temperature includes the following speed adjustment steps: First, the compressor of the automobile heating system is controlled to operate at the lowest speed within the optimal compressor speed range, and the real-time temperature in the vehicle is monitored. When the real-time temperature is lower than the preset target temperature, the speed is gradually increased based on the lowest speed within the optimal compressor speed range to obtain the requested first target speed, and the compressor of the automobile heating system is controlled to operate at the first target speed until the real-time temperature is no lower than the preset target temperature.

6. The control method of the automobile heating system according to claim 5, characterized in that: The speed increasing adjustment step further comprises: When the first target speed is within the resonance speed range, the compressor of the automobile heating system is controlled to operate at an upper limit speed of the resonance speed range; When the first target speed exceeds the highest speed in the optimal compressor speed range, the compressor of the vehicle heating system is controlled to operate at the highest speed.

7. The control method of the automobile heating system according to claim 6, characterized in that: The control method further comprises the following speed reduction adjustment step: After controlling the compressor of the automobile heating system to operate at the maximum speed, if it is detected that the real-time temperature is lower than the target temperature, the air-heating PTC heater of the automobile heating system is started to operate, so that the real-time temperature is not lower than the target temperature; When it is detected that the real-time temperature is greater than the target temperature, if the air-heating PTC heater is in the start-up state, the air-heating PTC heater is controlled to reduce the output power or turn off the air-heating PTC heater; When it is detected again that the real-time temperature is greater than the target temperature, the speed is gradually reduced based on the current speed of the compressor to obtain the requested second target speed, and the compressor of the vehicle heating system is controlled to operate at the second target speed until the real-time temperature is no greater than the target temperature.

8. The control method of the automobile heating system according to claim 7, characterized in that: The control method further comprises: According to the real-time temperature and the target temperature, the speed increase adjustment step and the speed decrease adjustment step are repeated to implement coupled closed-loop control of the compressor and the air-heating PTC heater.

9. A control device for a vehicle heating system, characterized in that: include: A first speed calculation module, for determining, under the current ambient temperature of the automobile heating system, a first compressor speed interval when the heating efficiency of the heat pump device in the automobile heating system is higher than the heating efficiency of the PTC heater; A second speed calculation module is used to determine a second compressor speed range corresponding to each gear of the blower according to the masking effect of the blower on the compressor noise at each gear in the automobile heating system and the resonance speed range not allowed by the whole vehicle; an optimal speed calculation module, configured to determine an optimal compressor speed interval according to an intersection of the first compressor speed interval and the second compressor speed interval; The speed control module is used to control the speed of the compressor of the automobile heating system to operate within the optimal compressor speed range, so that the temperature inside the vehicle reaches a preset target temperature.

10. 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, the control method of the automobile heating system according to any one of claims 1 to 9 is implemented.

11. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the control method of the automobile heating system according to any one of claims 1 to 8 is implemented.

Images