Compressor control method and device, electronic equipment and vehicle

Abstract

The invention relates to the technical field of compressor control, in particular to a compressor control method and device, electronic equipment and a vehicle. The method comprises the steps that a power limiting instruction sent by a vehicle control unit is received; wherein the power limiting instruction carries target limiting power of the compressor; when it is detected that the current first operation power of the compressor is larger than the target limiting power, according to the power limiting instruction, the compressor is controlled to reduce the rotating speed at a preset descending speed value, and the operation power of the compressor is detected in real time; and under the condition that the current second operation power of the compressor is not larger than the target limiting power, the compressor is controlled to stop reducing the rotating speed. The control stability of the compressor and the comfort of passengers in the vehicle can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of compressor control, and in particular to a compressor control method, device, electronic equipment, and vehicle. Background Art

[0002] Heat pump air conditioning systems, thanks to their energy-saving and environmentally friendly advantages, have become a key application in new energy vehicles. The compressor is a crucial core component in air conditioning systems. With the increasing use of heat pump air conditioning systems in new energy vehicles, the compressor is increasingly exposed to a wide range of operating conditions, including high and low temperatures. During this process, vehicle power limits are common, and compressor speed control must be adjusted based on the vehicle's power limit. This can lead to unstable compressor speed control, prone to shutdowns or repeated starts and stops, and impacting passenger comfort. Summary of the Invention

[0003] In order to solve the above technical problems, the present disclosure provides a compressor control method, device, electronic equipment and vehicle.

[0004] According to one aspect of the present disclosure, a compressor control method is provided, the method comprising: receiving a power limit instruction sent by a vehicle controller; wherein the power limit instruction carries a target limit power of the compressor; When it is detected that the current first operating power of the compressor is greater than the target limit power, the compressor is controlled to reduce its speed at a preset decreasing speed value according to the power limit instruction, and the operating power of the compressor is detected in real time; When the current second operating power of the compressor is not greater than the target limit power, the compressor is controlled to stop reducing the rotation speed.

[0005] According to another aspect of the present disclosure, a compressor control device is provided, the device comprising: A limit instruction receiving module is used to receive a power limit instruction sent by a vehicle controller; wherein the power limit instruction carries a target limit power of the compressor; a speed reduction module, configured to control the compressor to reduce its speed at a preset decreasing speed value according to the power limit instruction when detecting that the current first operating power of the compressor is greater than the target limit power, and to detect the operating power of the compressor in real time; The rotation speed reduction stopping module is configured to control the compressor to stop reducing the rotation speed when the current second operating power of the compressor is not greater than the target limit power.

[0006] According to another aspect of the present disclosure, an electronic device is provided, comprising: processor; a memory for storing instructions executable by the processor; The processor is configured to read the executable instructions from the memory and execute the instructions to implement the above method.

[0007] According to another aspect of the present disclosure, a vehicle is further provided, comprising: the compressor control device as described above or the electronic device as described above.

[0008] According to another aspect of the present disclosure, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and the computer program is used to execute the above method.

[0009] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art: The technical solution provided by the embodiment of the present disclosure includes: receiving a power limit instruction sent by a vehicle controller; wherein the power limit instruction carries a target limit power of the compressor; when it is detected that the current first operating power of the compressor is greater than the target limit power, controlling the compressor to reduce the speed at a preset descent speed value according to the power limit instruction, and detecting the operating power of the compressor in real time; when the current second operating power of the compressor is not greater than the target limit power, controlling the compressor to stop reducing the speed.

[0010] This solution, upon receiving a power limit instruction and the compressor's current first operating power exceeding the target power limit, smoothly and controllably controls the compressor to reduce its speed at a preset speed reduction rate. During this process, the compressor's operating power is monitored in real time. Once it is no longer above the target power limit, the speed reduction is immediately stopped, stabilizing the system at a new equilibrium point. This not only meets the vehicle's power limit requirements, but also effectively mitigates sudden power fluctuations by smoothly and controllably controlling the compressor's speed reduction at a preset speed reduction rate, ensuring a smooth and controllable decrease in power with speed. This avoids problems such as shutdowns or repeated starts and stops caused by sudden power fluctuations. By monitoring the compressor's operating power in real time and stopping the speed reduction when it reaches the target, the vehicle's power limit requirements are met while preventing problems such as excessive compressor speed reduction leading to shutdowns and insufficient cooling or heating performance. Therefore, this embodiment, through the target power limit, balances the vehicle's power limit requirements with the cooling / heating comfort of the compressor in the air conditioning system, reducing compressor shutdowns or repeated starts and stops during power limit conditions, and improving compressor control stability and passenger comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0013] Figure 1 A compressor speed change schematic diagram according to an embodiment of the present disclosure; Figure 2 A compressor operating power change schematic diagram according to an embodiment of the present disclosure; Figure 3 A flowchart of a compressor control method according to an embodiment of the present disclosure; Figure 4 A compressor speed and operating power change schematic diagram in a compressor control process according to an embodiment of the present disclosure; Figure 5 A flowchart of another compressor control method according to an embodiment of the present disclosure; Figure 6 A structure schematic diagram of a compressor control device according to an embodiment of the present disclosure; Figure 7 A structure schematic diagram of an electronic device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0015] In the following description, many specific details are set forth in order to provide a thorough understanding of the present disclosure. However, the present disclosure can be practiced without the specific details. It is apparent that the examples described in the specification are only a part of the embodiments of the present disclosure, not all the embodiments.

[0016] For new energy vehicles, when the vehicle's power is limited, the compressor speed control needs to be adjusted according to the vehicle's power limit, resulting in unstable compressor speed control, prone to shutdown or repeated start-stop situations, affecting the comfort of passengers in the car. For example, in the air-conditioning circulation loop, when the compressor is operating under high-temperature conditions, the vehicle's power will suddenly decrease under conditions such as sudden acceleration, climbing a slope, or vehicle abnormalities. According to traditional control logic, after receiving the vehicle's power limit signal, the compressor will usually take a direct switching or cliff-like drop method to limit the compressor's normal operating power, causing people in the cab to feel abnormal temperatures. Therefore, the control of the compressor is particularly critical. Refer to the following two specific examples.

[0017] Example 1: Direct setting of the speed. Figure 1 and Figure 2 As shown, from t0 to t1, the compressor is operating normally. At t1, the compressor receives the vehicle power limit signal, and the vehicle controller or air conditioning controller directly adjusts the compressor speed from a higher value (corresponding to the current cooling / heating demand, for example) based on a simple mapping relationship. Figure 1 The red line in the middle shows 8000 rps / s) and is instantly set to a lower value (corresponding to the target power limit, e.g. Figure 1 The black line in the middle represents 800rps / s).

[0018] Reference Figure 2 This speed change causes a precipitous drop in operating power, rapidly falling from the normal operating power of 5000W (shown by the red line). Due to compressor inertia, power typically overshoots, momentarily falling below the target power limit (e.g., below 2000W, shown by the black line). After reaching time t2, the compressor power may rebound slightly, fluctuate, and stabilize at a lower value.

[0019] At t3, the vehicle power limit is lifted, and the compressor speed instantly jumps back to its original level. Accordingly, the compressor power recovers rapidly from t3 and returns to its original level in a relatively short time (t4).

[0020] Example 2: On-off control. In some simpler control systems, a near-on-off control approach might even be used; once the vehicle power exceeds a preset power limit, the compressor is completely shut down; when it detects that there is sufficient vehicle power, the compressor is restarted at a higher speed.

[0021] The above-mentioned traditional deceleration method will bring a series of problems that seriously affect comfort and system stability. Among them, (1) the instantaneous and significant reduction in the compressor speed will cause a sharp decrease in the refrigerant circulation volume of the air conditioning system. This causes the temperature of the air outlet to change drastically in a short period of time. For example, when cooling, the air with a temperature that is not low enough will suddenly be blown out, and when heating, the air will suddenly be blown out. The passengers in the car will obviously feel the abnormal temperature, the cooling / heating effect will change suddenly, and the comfort and experience will be very poor. (2) The sudden change in speed will cause huge pressure shock and flow shock to the refrigerant in the air conditioning pipeline. If this continues for a long time, it will accelerate the wear of key components such as the compressor and expansion valve, affecting the life and reliability of the system. (3) It is easy to cause the compressor to start and stop repeatedly, which is one of the most serious problems. When the speed is instantly reduced, the cooling / heating capacity of the air conditioning system may not be able to meet the needs of the car, causing the temperature in the car to deviate from the set value quickly. In order to recover the temperature, the air conditioning controller will request the compressor to increase the speed quickly, but this may trigger the power limit of the whole vehicle again. In this cycle, the compressor will switch repeatedly between high speed, limitation, low speed, insufficient demand, and high speed, that is, repeated start and stop. This state not only makes passengers feel the continuous alternation of hot and cold, which is extremely uncomfortable, but also causes repeated current shocks to the compressor motor and battery system.

[0022] Based on this, the embodiments of the present disclosure provide a compressor control method, device, electronic device, and vehicle. This technical solution can be applied to various vehicle operation scenarios, such as dynamic power distribution scenarios for the entire vehicle (such as high power demand, abnormal protection), transition scenarios of power limitation and release, and scenarios that require balancing the cooling / heating effect of the compressor with the power constraints of the entire vehicle. It is particularly adaptable to new energy vehicles and fuel vehicles that focus on power management. This technical solution dynamically adjusts the speed of the compressor to adapt to the power constraints of the entire vehicle, ensuring stable operation of the compressor and balancing comfort in power-constrained scenarios.

[0023] Figure 3 A flowchart of a compressor control method provided in an embodiment of the present disclosure is provided. The method can be executed by a compressor control device configured on the vehicle side. The device can be implemented using software and / or hardware, such as an electronic device. The electronic device can include a vehicle-mounted host, an air-conditioning controller, a tablet computer, a desktop computer, a laptop computer, a smart phone, and other devices with communication functions.

[0024] like Figure 3 As shown, a compressor control method may include the following steps S102-S106.

[0025] S102, receiving a power limit instruction sent by a vehicle controller; wherein the power limit instruction carries a target limit power of the compressor.

[0026] In some operating scenarios, vehicle power can suddenly drop. These scenarios are prone to power reduction, such as sudden acceleration, climbing a slope, vehicle anomalies, or when the compressor in the air conditioning circuit operates at high temperatures. When power is reduced, the compressor's normal operating power is limited, causing the cabin to feel abnormally hot. If the compressor power limit is unstable, this can affect driver comfort.

[0027] Therefore, in this embodiment, when the vehicle power is reduced in the above scenario, the vehicle controller can send a power limit instruction to an electronic device (such as an EAC). This power limit instruction includes the target power limit of the compressor and is used to instruct the compressor to limit the operating power by reducing the speed so that it operates within a range not exceeding the target power limit.

[0028] S104 , when it is detected that the current first operating power of the compressor is greater than the target limit power, the compressor is controlled to reduce its speed at a preset decreasing speed value according to the power limit instruction, and the operating power of the compressor is detected in real time.

[0029] In this embodiment, after receiving the rear power limitation instruction, the current first operating power of the compressor may be detected first.

[0030] It is understood that the air conditioner load determines the compressor's operating power. In actual applications, when a power limit instruction is received, the air conditioner load may be low, causing the compressor's current first operating power to be less than or equal to the target power limit. In this case, there is no need to control the compressor to reduce its speed at a preset descent speed. Instead, the compressor can be controlled to maintain its current speed. During subsequent operation, the compressor's operating power will be monitored according to the power limit instruction to ensure that its operating power does not exceed the target power limit.

[0031] Accordingly, when it is detected that the current first operating power of the compressor is greater than the target limit power, the compressor is controlled to reduce its speed at a preset decreasing speed value (for example, 100 rpm / s) according to the power limit instruction, and the operating power of the compressor is detected in real time. When it is detected that the operating power of the compressor is no greater than the target limit power, it indicates that the compressor has met the power limit requirement of the entire vehicle, and the compressor can be controlled to stop further reducing its speed.

[0032] S106 : When the current second operating power of the compressor is not greater than the target limited power, control the compressor to stop reducing the rotation speed.

[0033] In this embodiment, the compressor is controlled to continuously reduce the speed at a preset decreasing speed value, and the operating power of the compressor is detected in real time; until it is detected that the current second operating power of the compressor is not greater than the target limit power, it is determined to control the compressor to stop reducing the speed.

[0034] Specific as Figure 4 For example, at time t1, a power limit instruction sent by the vehicle controller is received; when it is detected that the current first operating power of the compressor (such as 5000W) is greater than the target limit power (such as 2000W), the compressor is controlled to smoothly and orderly reduce the speed from the current operating speed (such as 8000rpm / s) at a preset reduction speed value (such as 100rpm / s) according to the power limit instruction, and the operating power of the compressor is detected in real time.

[0035] When it is detected at time t2 that the operating power of the compressor is not greater than the target limit power, it means that the compressor has met the power limit requirement of the entire vehicle, so the compressor can be controlled to stop and continue to reduce the speed; for example, at time t2, the operating speed of the compressor drops to 800 rpm / s.

[0036] Furthermore, it is understandable that Figure 4 The t1 and t2 moments in Figure 1 and Figure 2 The time t1 and time t2 are not the same time, but are only used to illustrate the different times when the time change occurs.

[0037] The compressor control method provided in this embodiment includes: receiving a power limit instruction sent by a vehicle controller; wherein the power limit instruction carries a target limit power of the compressor; when it is detected that the current first operating power of the compressor is greater than the target limit power, controlling the compressor to reduce the speed at a preset descent speed value according to the power limit instruction, and detecting the operating power of the compressor in real time; when the current second operating power of the compressor is not greater than the target limit power, controlling the compressor to stop reducing the speed.

[0038] When a power limit instruction is received and the compressor's current first operating power exceeds the target power limit, this embodiment does not directly set a target speed or shut down the compressor, as in related solutions. Instead, the compressor speed is smoothly and controllably reduced at a preset speed reduction rate. During this process, the compressor's operating power is monitored in real time. Once the power limit is no longer than the target power limit, the speed reduction is immediately stopped, allowing the system to stabilize at a new equilibrium point. This approach not only meets the vehicle's power limit requirements, but also effectively mitigates sudden power fluctuations by smoothly and controllably reducing the power with the speed, thereby avoiding shutdowns or repeated starts and stops caused by sudden power fluctuations. By monitoring the compressor's operating power in real time and stopping the speed reduction when the target power is reached, the vehicle's power limit requirements can be met while preventing problems such as excessive compressor speed reduction leading to shutdowns and insufficient cooling or heating performance. Specifically, related solutions (such as on-off control or direct speed setting) can completely interrupt the cooling / heating function, resulting in a sudden drop in cooling / heating capacity, causing passengers to experience drastic temperature fluctuations and poor comfort. In comparison, the compressor of the present application smoothly reduces the speed at a preset descent speed value, which means that the refrigerant flow and pressure of the air-conditioning system also change smoothly, so that the change of the air outlet temperature is very soft and slow. The passengers in the car can hardly feel the sudden change of the air-conditioning effect caused by the power limitation of the whole vehicle, realizing seamless power switching and significantly improving the riding experience.

[0039] Therefore, this embodiment can accurately stabilize the operating power of the compressor at the upper limit of the target limit power required by the entire vehicle through real-time power detection and closed-loop control. On the premise of meeting the power limit of the entire vehicle, the cooling / heating capacity of the air conditioner is retained to the maximum extent, and the optimal balance between energy consumption and comfort is better maintained. That is, the vehicle power limit requirement and the cooling / heating comfort effect of the compressor in the air-conditioning system are balanced, the phenomenon of compressor shutdown or repeated start and stop when power is limited is reduced, and the stability of compressor control and the comfort of passengers in the vehicle are improved.

[0040] In this embodiment, the compressor continuously reduces its speed. If the speed of the compressor is lower than expected, the minimum speed protection mechanism will be triggered. Based on this, the compressor control method may further include: During the process of controlling the compressor to reduce its speed at a preset decreasing speed value, it is determined whether the speed of the compressor is higher than a preset minimum speed value; if not, the compressor is controlled to stop running.

[0041] Specifically, while controlling the compressor to reduce speed, the electronic device detects the current speed of the compressor in real time and compares it with a preset minimum speed value for the compressor. This minimum speed value is typically calibrated based on the mechanical characteristics of the compressor. Speeds below this minimum speed value may result in insufficient lubrication or a sudden drop in cooling / heating efficiency. This minimum speed value is, for example, 800 rpm.

[0042] If the current speed of the compressor is not higher than the minimum speed value, it means that the cooling / heating effect of the air conditioner can no longer be met. At this time, it is meaningless to continue to maintain the operation of the compressor. Therefore, the compressor can be directly controlled to stop running.

[0043] According to this embodiment, a compressor control method may be provided as follows: Figure 5 As shown, the following steps are included.

[0044] S202, receiving a power limit instruction sent by a vehicle controller; wherein the power limit instruction carries a target limit power of the compressor.

[0045] S204 , when it is detected that the current first operating power of the compressor is greater than the target limited power, the compressor is controlled to reduce its rotation speed at a preset decreasing speed value according to the power limiting instruction.

[0046] S206 , in the process of controlling the compressor to reduce its speed at a preset decreasing speed value, determining whether the speed of the compressor is higher than a preset minimum speed value.

[0047] S208: If the current speed of the compressor is not higher than the minimum speed value, the compressor is controlled to stop running.

[0048] In which case, when the current rotation speed of the compressor is not higher than the minimum rotation speed value, the compressor can be directly controlled to stop running regardless of whether the current second operating power of the compressor is greater than the target limit power.

[0049] S210: If the current rotation speed of the compressor is higher than the minimum rotation speed value, determine whether the second operating power of the compressor is higher than the target limit power.

[0050] Specifically, if the current compressor speed is higher than the minimum speed value, it indicates that the compressor speed still has room to decrease to meet the power limit requirement. Next, a determination is made as to whether the compressor's second operating power is greater than the target power limit. If so, step S212 is executed to control the compressor to continue decreasing its speed. If not, step S214 is executed to stop the compressor.

[0051] S212: If the second operating power is greater than the target limit power and the speed of the compressor is higher than the minimum speed value, the speed of the compressor is controlled to decrease at a preset decreasing speed value.

[0052] In this embodiment, when the second operating power is greater than the target limit power and the rotational speed of the compressor is higher than the minimum rotational speed value, the rotational speed of the compressor is continuously controlled to be reduced at the preset decreasing speed value.

[0053] S214: If the second operating power is not greater than the target limited power and the speed of the compressor is higher than the minimum speed value, the compressor is controlled to stop reducing the speed.

[0054] In this embodiment, if the second operating power is not greater than the target power limit and the compressor speed is greater than the minimum speed value, this indicates that the compressor's current second operating power can meet the vehicle's power limit requirements, and the compressor speed is greater than the minimum speed value, thus supporting the air conditioner's cooling / heating effect. In this case, the compressor is controlled to stop reducing its speed. Thereafter, the compressor can be controlled to maintain the current speed or, provided it is not greater than the target power limit, to increase the compressor speed appropriately, thereby improving the air conditioner's cooling / heating effect.

[0055] Based on the above embodiments, it is considered that, under the condition that the compressor's real-time operating efficiency is no greater than the target power limit, the closer it is to the target power limit, the better the cooling / heating effect on the air conditioner. Therefore, after reducing the compressor's speed so that the current second operating power of the compressor is no greater than the target power limit, this embodiment can also appropriately increase the compressor's speed to ensure that the compressor's actual operating power is no greater than, but as close as possible to, the target power limit, thereby achieving a better cooling / heating effect and improving cabin comfort. The following embodiments are provided for controlling the compressor's speed increase process.

[0056] In one embodiment, after controlling the compressor to stop reducing the speed, the compressor control method may include: Determine a first power difference between the second operating power and the target limit power; when the first power difference is greater than a preset first power threshold, control the compressor to increase the speed with a preset first increasing speed value; wherein the first increasing speed value is less than the decreasing speed value.

[0057] In a specific embodiment, after the compressor is controlled to stop and reduce speed, the power difference detection and compressor speed increase attempt phase may begin. During this phase, a first power difference between the compressor's current second operating power and the target power limit is detected in real time. The purpose of detecting the first power difference is to ensure that the compressor's real-time operating power is as close to the target power limit as possible.

[0058] The first power difference is then compared with a preset first power threshold (e.g., 300W). If the first power difference is greater than the first power threshold, the trigger condition for increasing the compressor speed to adjust the operating power is met. In this case, a preset first increasing speed value (e.g., 50 rpm / s) can be read from the system parameter library. This first increasing speed value is typically lower than the decreasing speed value (100 rpm / s) to prevent the compressor speed and operating power from rapidly increasing beyond the target power limit.

[0059] At the same time, the electronic device performs a comprehensive check of the compressor's current status, including motor temperature (ensuring it's within the normal operating range), electromagnetic clutch status, and CAN bus communication status (ensuring there are no data transmission anomalies), ensuring a safe and reliable speed increase. Once these checks are complete, the electronic device sends a speed increase command to the compressor driver module via a PWM signal. This command explicitly includes a first speed increase value. Upon receiving the command, the driver module begins controlling the compressor to gradually increase speed at the first speed increase value.

[0060] For example, the target power limit is 2000W, and the current second operating power of the compressor is 1500W. The first power difference between the second operating power and the target power limit is 500W, which is greater than the preset first power threshold of 300W. Then, the compressor is controlled to gradually increase its speed at a first increasing speed value of 50 rpm / s.

[0061] It is understood that as the compressor speed increases, it must still meet the vehicle power limit requirements. In this case, this embodiment may further include: detecting the compressor's current third operating power during the process of controlling the compressor speed to increase; and controlling the compressor to stop increasing its speed if a second power difference between the third operating power and the target power limit is less than a preset second power threshold.

[0062] In this embodiment, when controlling the compressor to increase its speed, the compressor's real-time third operating power gradually increases as the speed increases. To prevent the compressor from exceeding the target power limit, a second power difference between the compressor's current third operating power and the target power limit can be detected in real time to determine whether it is less than a preset second power threshold.

[0063] Among them, the second power threshold is less than the above-mentioned first power threshold. The second power threshold can be a pre-set fixed value, or it can also be determined according to the first rising speed value. An example method of determining the second power threshold according to the first rising speed value includes: based on the compressor increasing the speed according to the first rising speed value, calculating the operating power required by the compressor after the speed is increased for a preset time, and using the required operating power as the second power threshold. The above-mentioned preset time, such as 1 second, 3 seconds, etc., can be understood as the buffer time between the current actual operating power and the target limit power according to the first rising speed value of the compressor.

[0064] If the second power difference is detected to be less than the second power threshold, the compressor's actual operating power is close to the target power limit, achieving maximum operating efficiency within the target power limit. Further speed increases at this point could potentially exceed the target power limit. Consequently, the compressor can be controlled to stop increasing speed and maintain the current stable speed to avoid speed overshoot caused by inertia.

[0065] Through the above embodiment, when the first power difference is greater than the first power threshold, the compressor is controlled to increase its speed at a preset first rising speed value. Furthermore, during the speed increase process, if the second power difference between the third operating power of the compressor and the target power limit is detected to be less than a preset second power threshold, the compressor is controlled to stop increasing its speed. The above process demonstrates the refinement and intelligence of the entire control strategy, ensuring that the control of the compressor's speed and operating power is not a simple "on / off" or "range" control, but rather achieves precise and tailored control of the speed and operating power limits. This ensures that the compressor's actual operating power does not exceed the target power limit, meeting the vehicle's power limit requirements, while also ensuring the cooling / heating comfort of the air conditioner.

[0066] In another embodiment, after controlling the compressor to stop reducing the speed, the compressor control method may include: Record the duration during which the second operating power is not greater than the target limit power; when the duration is greater than a preset duration threshold, control the compressor to increase the speed with a preset second increasing speed value; wherein the second increasing speed value is less than the decreasing speed value; the second increasing speed value is the same as or different from the first increasing speed value.

[0067] In a specific embodiment, after the compressor is controlled to stop reducing the speed, a duration monitoring and compressor speed increase attempt phase may be entered. In this phase, the duration of the second operating power not being greater than the target limit power is recorded.

[0068] If the duration of this operation exceeds the preset threshold, the compressor maintains stable operation for an extended period within the target power limit. This indicates a significant difference between the compressor's current real-time operating power and the target power limit. This persistent power difference indicates that the compressor is not yet fully utilizing the vehicle's target power limit under the current operating conditions. This means that the compressor has the potential to further increase operating power through reasonable adjustments without exceeding the target power limit, and this unused power can be exploited by optimizing the speed.

[0069] Furthermore, in this embodiment, when the duration is greater than a preset duration threshold, the compressor speed is controlled to increase at a preset second increasing speed value. The specific implementation of controlling the compressor speed to increase at the preset second increasing speed value can refer to the implementation of controlling the compressor speed to increase at the preset first increasing speed value in the above embodiment, and will not be further described here.

[0070] Similar to the previous embodiment, as the compressor speed increases, it must still meet the vehicle power limit requirement. In this case, this embodiment may further include: detecting the compressor's current third operating power during the process of controlling the compressor speed to increase; and controlling the compressor to stop increasing its speed if a second power difference between the third operating power and the target power limit is less than a preset second power threshold.

[0071] In this embodiment, the compressor control method may further include the following steps: Receive a power limit release command sent by the vehicle controller; determine the current available operating power of the compressor based on the power limit release command; and control the compressor to operate within a range not exceeding the available operating power.

[0072] Specifically, after the vehicle has completed an abnormal operating condition such as rapid acceleration, overtaking, or climbing a hill, the vehicle's power system regains sufficient power and can enter the recovery phase after the power limit is lifted. During this phase, the vehicle controller can send a power limit release command to the electronic equipment; this power limit release command instructs the air conditioner compressor to remove the power limit and operate at the actual required operating power.

[0073] The power limit release command does not mean the compressor can instantly resume full power. The electronic equipment must determine the vehicle's available discharge power based on the vehicle's current operating status and the battery's discharge power. It then determines the available operating power allocated to the compressor based on the vehicle's available discharge power and the air conditioning load, controlling the compressor's operation within the available operating power range. This approach carefully establishes a safe, usable power ceiling for the compressor to avoid a secondary impact on the vehicle, which has just returned to normal operation.

[0074] To control the compressor to operate within a range not exceeding the available operating power, this embodiment may include: The required operating power of the air-conditioning load is determined within a range not higher than the available operating power; when the current third operating power of the compressor is less than the required operating power of the air-conditioning load, the compressor is controlled to increase the speed at a preset third increasing speed value until the operating power of the compressor reaches the required operating power of the air-conditioning load, and the compressor is controlled to stop increasing the speed.

[0075] In order to restore the operating efficiency of the compressor more quickly, the preset third increasing speed value is generally larger, for example, 2000 rpm / s.

[0076] This embodiment achieves rapid recovery of the compressor operating efficiency after the power limit is released, that is, rapid recovery of the air conditioning cooling / heating effect, taking into account both regulation efficiency and system safety.

[0077] Furthermore, if the compressor's current third operating power is not less than the air conditioning load's required operating power, the compressor currently has sufficient power to support the air conditioning load and no further efficiency improvement is required. In this case, no adjustments to the compressor control are required. Alternatively, to conserve energy, the compressor speed can be appropriately reduced so that the compressor's operating power meets the air conditioning load's required operating power.

[0078] In summary, the compressor control method provided in the embodiment of the present disclosure, after receiving the power limit instruction, controls the compressor to reduce the speed with a decreasing speed value, and detects the operating power of the compressor in real time. It can adapt to the power limit requirements of the entire vehicle, while avoiding problems such as shutdown or repeated start and stop caused by sudden changes in compressor power, thereby ensuring the stability of the compressor operation.

[0079] Furthermore, after the compressor stops reducing the speed, under the premise that the current second operating power of the compressor is not greater than the target limit power, the compressor can be dynamically controlled to increase the speed based on the first power difference or duration, so as to maximize the power potential of the compressor and reduce the problem of insufficient air conditioning cooling / heating effect.

[0080] Also, after receiving the power limit release instruction, the current available operating power of the compressor is determined, and the compressor is controlled to operate within a range not exceeding the available operating power, so that the compressor can quickly recover and meet the operating requirements of the air-conditioning load, avoiding temperature fluctuations that affect comfort.

[0081] Therefore, for the scenario of vehicle power limitation, the present disclosure can better realize the active control of the operating power of the compressor in the running state by controlling the speed of the compressor, ensuring that the compressor performs stable power control according to the power limitation requirements of the vehicle.

[0082] Figure 6 This is a structural block diagram of a compressor control device provided in an embodiment of the present disclosure, which can be used to implement the compressor control method provided in the above embodiment. Figure 6 As shown, the compressor control device 300 may include: The limiting instruction receiving module 310 is configured to receive a power limiting instruction sent by the vehicle controller; wherein the power limiting instruction carries a target limiting power of the compressor; a speed reduction module 320 for controlling the compressor to reduce its speed at a preset decreasing speed value according to the power limit instruction when detecting that the current first operating power of the compressor is greater than the target limit power, and detecting the operating power of the compressor in real time; The rotation speed reduction stopping module 330 is configured to control the compressor to stop reducing the rotation speed when the current second operating power of the compressor is not greater than the target limit power.

[0083] In one embodiment, the compressor control device 300 further includes: During the process of controlling the compressor to reduce its speed at a preset decreasing speed value, determining whether the speed of the compressor is higher than a preset minimum speed value; If it is not higher than, the compressor is controlled to stop running.

[0084] In one embodiment, after controlling the compressor to stop reducing the speed, the compressor control device 300 further includes: determining a first power difference between the second operating power and the target limit power; When the first power difference is greater than a preset first power threshold, the compressor is controlled to increase its speed at a preset first increasing speed value; wherein the first increasing speed value is less than the decreasing speed value.

[0085] In one embodiment, after controlling the compressor to stop reducing the speed, the compressor control device 300 further includes: Recording a duration during which the second operating power is not greater than the target limit power; When the duration is longer than a preset duration threshold, the compressor is controlled to increase its speed at a preset second increasing speed value; wherein the second increasing speed value is smaller than the decreasing speed value.

[0086] In one embodiment, the compressor control device 300 further includes: In the process of controlling the compressor to increase the speed, detecting a current third operating power of the compressor; When a second power difference between the third operating power and the target limit power is smaller than a preset second power threshold, the compressor is controlled to stop increasing the rotation speed.

[0087] In one embodiment, the compressor control device 300 further includes: Receive the power limit release command sent by the vehicle controller; determining the current available operating power of the compressor according to the power limit release instruction; The compressor is controlled to operate within a range not higher than the available operating power.

[0088] In one embodiment, the compressor control device 300 further includes: determining the required operating power of the air conditioning load within a range not exceeding the available operating power; When the current third operating power of the compressor is less than the required operating power of the air-conditioning load, the compressor is controlled to increase the speed at a preset third increasing speed value until the operating power of the compressor reaches the required operating power of the air-conditioning load, and then the compressor is controlled to stop increasing the speed.

[0089] The compressor control device provided in this embodiment, upon receiving a power limit instruction and the compressor's current first operating power exceeding the target power limit, does not directly set a target speed or shut down the compressor, as in related solutions. Instead, it smoothly and controllably reduces the compressor speed at a preset speed reduction rate. During this process, it monitors the compressor's operating power in real time. Once the power limit is no longer than the target power limit, the speed reduction is immediately stopped, stabilizing the system at a new equilibrium point. This not only meets the vehicle's power limit requirements, but also effectively mitigates sudden power fluctuations by smoothly and controllably reducing the power with the speed, thereby avoiding shutdowns or repeated starts and stops caused by sudden power fluctuations. By monitoring the compressor's operating power in real time and stopping the speed reduction when the target power is reached, the vehicle's power limit requirements can be met while preventing excessive compressor speed reduction, which could lead to shutdowns and insufficient cooling or heating performance. Specifically, related solutions (such as on-off control or direct speed setting) can completely interrupt the cooling / heating function, resulting in a sudden drop in cooling / heating capacity, causing passengers to experience drastic temperature fluctuations and poor comfort. In comparison, the compressor of the present application smoothly reduces the speed at a preset descent speed value, which means that the refrigerant flow and pressure of the air-conditioning system also change smoothly, so that the change of the air outlet temperature is very soft and slow. The passengers in the car can hardly feel the sudden change of the air-conditioning effect caused by the power limitation of the whole vehicle, realizing seamless power switching and significantly improving the riding experience.

[0090] Therefore, by real-time power detection and closed-loop control, the running power of the compressor can be accurately stabilized at the upper limit of the target limit power required by the whole vehicle, the refrigeration / heating capacity of the air conditioner is maximally reserved under the premise of meeting the power limit of the whole vehicle, the optimal balance between energy consumption and comfort is better maintained, that is, the power limit demand of the vehicle and the comfort effect of the compressor in the air conditioning system are balanced, the phenomenon of compressor shutdown or repeated start-stop under power limit is reduced, and the stability of the compressor control and the comfort of the passengers in the vehicle are improved.

[0091] The device provided in the embodiment has the same implementation principle and technical effects as the method provided in the foregoing embodiment, and for brief description, the part not mentioned in the device embodiment can be referred to the corresponding content in the foregoing method embodiment.

[0092] Figure 7 A structural schematic diagram of an electronic device is provided in the embodiment of the disclosure. As shown in the figure, Figure 7 The electronic device 400 includes one or more processors 401 and a memory 402.

[0093] The processor 401 can be a central processing unit (CPU) or other forms of processing units having data processing and / or instruction execution capabilities, and can control other components in the electronic device 400 to perform desired functions.

[0094] The memory 402 can include one or more computer program products, which can include various forms of computer readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may, for example, include random access memory (RAM), cache memory, and the like. The non-volatile memory may, for example, include read-only memory (ROM), hard disk, flash memory, and the like. One or more computer program instructions can be stored on the computer readable storage medium, and the processor 401 can run the program instructions to implement the compressor control method of the embodiment of the disclosure described above and / or other desired functions. Various contents such as input signals, signal components, noise components, and the like can also be stored in the computer readable storage medium.

[0095] In one example, the electronic device 400 can further include an input device 403 and an output device 404, which are interconnected through a bus system and / or other forms of connection mechanism (not shown).

[0096] In addition, the input device 403 can also include, for example, a keyboard, a mouse, and the like.

[0097] The output device 404 can output various information to the outside, including determined distance information, direction information, etc. The output device 404 can include, for example, a display, a speaker, a printer, a communication network and its connected remote output device, etc.

[0098] Of course, to simplify, Figure 7 Only some of the components related to the present disclosure in the electronic device 400 are shown, and components such as buses, input / output interfaces, etc. are omitted. In addition, the electronic device 400 may further include any other appropriate components according to specific application scenarios.

[0099] Furthermore, this embodiment also provides a vehicle, which includes: the compressor control device as described above or the electronic device as described above.

[0100] Furthermore, this embodiment also provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program is used to execute the above-mentioned compressor control method.

[0101] The embodiments of the present disclosure provide a compressor control method, device, electronic device, and vehicle computer program product, including a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods described in the previous method embodiments. For specific implementation, please refer to the method embodiments and will not be repeated here.

[0102] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0103] The foregoing description is intended only to provide specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A compressor control method, characterized in that: The method comprises: receiving a power limit instruction sent by a vehicle controller; wherein the power limit instruction carries a target limit power of the compressor; When it is detected that the current first operating power of the compressor is greater than the target limit power, the compressor is controlled to reduce its speed at a preset decreasing speed value according to the power limit instruction, and the operating power of the compressor is detected in real time; When the current second operating power of the compressor is not greater than the target limit power, the compressor is controlled to stop reducing the rotation speed.

2. The method according to claim 1, characterized in that The method further comprises: During the process of controlling the compressor to reduce its speed at a preset decreasing speed value, determining whether the speed of the compressor is higher than a preset minimum speed value; If it is not higher than, the compressor is controlled to stop running.

3. The method according to claim 1, characterized in that After controlling the compressor to stop reducing the speed, the method further includes: determining a first power difference between the second operating power and the target limit power; When the first power difference is greater than a preset first power threshold, the compressor is controlled to increase its speed at a preset first increasing speed value; wherein the first increasing speed value is less than the decreasing speed value.

4. The method according to claim 1, wherein After controlling the compressor to stop reducing the speed, the method further comprises: Recording a duration during which the second operating power is not greater than the target limit power; When the duration is longer than a preset duration threshold, the compressor is controlled to increase its speed at a preset second increasing speed value; wherein the second increasing speed value is smaller than the decreasing speed value.

5. The method according to claim 3 or 4, characterized in that The method further comprises: In the process of controlling the compressor to increase the speed, detecting a current third operating power of the compressor; When a second power difference between the third operating power and the target limit power is smaller than a preset second power threshold, the compressor is controlled to stop increasing the rotation speed.

6. The method according to claim 1, characterized in that The method further comprises: Receive the power limit release command sent by the vehicle controller; determining the current available operating power of the compressor according to the power limit release instruction; The compressor is controlled to operate within a range not higher than the available operating power.

7. The method according to claim 6, characterized in that The controlling the compressor to operate within a range not higher than the available operating power comprises: determining the required operating power of the air conditioning load within a range not exceeding the available operating power; When the current third operating power of the compressor is less than the required operating power of the air-conditioning load, the compressor is controlled to increase the speed at a preset third increasing speed value until the operating power of the compressor reaches the required operating power of the air-conditioning load, and then the compressor is controlled to stop increasing the speed.

8. A compressor control device, characterized in that: The device comprises: A limit instruction receiving module is used to receive a power limit instruction sent by a vehicle controller; wherein the power limit instruction carries a target limit power of the compressor; a speed reduction module, configured to control the compressor to reduce its speed at a preset decreasing speed value according to the power limit instruction when detecting that the current first operating power of the compressor is greater than the target limit power, and to detect the operating power of the compressor in real time; The rotation speed reduction stopping module is configured to control the compressor to stop reducing the rotation speed when the current second operating power of the compressor is not greater than the target limit power.

9. An electronic device, characterized in that: The electronic device comprises: processor; a memory for storing instructions executable by the processor; The processor is configured to read the executable instructions from the memory and execute the instructions to implement the method according to any one of claims 1 to 7.

10. A vehicle, characterized in that: The vehicle includes: the compressor control device according to claim 8 or the electronic device according to claim 9.

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