Control method, apparatus, vehicle, and storage medium for a vehicle's heat pump system

Abstract

A method, apparatus, vehicle, and storage medium for controlling a vehicle's heat pump system, wherein the method for controlling the vehicle's heat pump system (10) includes the steps of: obtaining the actual ambient temperature of the environment in which the vehicle is currently located; determining whether the actual ambient temperature is less than a preset cold start temperature; and, if it is less than a preset cold start temperature, obtaining at least one current cold start parameter of the vehicle, determining the optimal heating method for the vehicle based on at least one current cold start parameter, and controlling the heat pump system (10) to heat the vehicle using the optimal heating method.

Description

Technical Field

[0005] , , , ,

[0004] , ,

[0001] The present disclosure relates to the field of electric vehicle heating technology, and particularly relates to a control method, device, vehicle and storage medium for a vehicle heat pump system.

Background Art

[0002] How to reduce the heat management power consumption of the whole vehicle as much as possible during vehicle use and improve the cruising range of the whole vehicle is the main content of the research on electric drive vehicles.

[0003] In the related art, when the environmental temperature is lower than -10°C, the refrigerant based on the air conditioning system is basically difficult to meet the heating requirements of the system. The related art adopts a direct heat pump solution means, that is, when the environmental temperature is -10°C or lower, the PTC heater is used to heat the passenger compartment and the battery. When the environmental temperature is above -10°C, the passenger compartment absorbs external heat by the heat pump to heat the passenger compartment. When the heating power of the battery is large, it is heated by the PTC heater. Battery heating power When it is small, the battery is heated by the waste heat of electric drive.

[0004] However, in the related art, the heat management of each component of the vehicle is independent of each other, which is likely to cause energy waste, the overall power consumption is large, thereby affecting the cruising of the vehicle and reducing the driving experience of the user, and improvement is expected.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present disclosure provides a control method, device, vehicle and storage medium for a vehicle heat pump system. When the actual environmental temperature is lower than a preset cold start temperature, the optimal heating method is determined based on the current cold start parameters of the vehicle, and thus the optimal heating method is used. VehicleThe heat pump system can be controlled to heat the vehicle, taking into account the vehicle's integrated parameters and heating needs, saving heating power consumption, thereby improving the vehicle's range and enhancing the user's driving experience. [Means for solving the problem]

[0006] In a first embodiment, a method for controlling a vehicle's heat pump system is provided, the control method comprising the steps of: obtaining the actual ambient temperature of the environment in which the vehicle is currently located; determining whether the actual ambient temperature is less than a preset cold start temperature; and, if it is less than the preset cold start temperature, obtaining at least one current cold start parameter of the vehicle; determining the optimal heating method of the vehicle based on the at least one current cold start parameter; and Vehicle The method includes the step of controlling the heat pump system to heat the vehicle using the optimal heating method.

[0007] With the above technical solution, if the actual ambient temperature is lower than the preset cold start temperature, the optimal heating method is determined based on the vehicle's current cold start parameters, and the optimal heating method is used. Vehicle The heat pump system is controlled to heat the vehicle, taking into account the vehicle's integrated parameters and heating demands to conserve heating power, thereby improving the vehicle's range and enhancing the user's driving experience.

[0008] Referring to the first embodiment, in several possible realizations, the at least one current cold-start parameter is the current discharge power of the power battery, the chiller (chiller) This includes at least one of the current water outlet temperature and the current water temperature of the power battery.

[0009] Referring to the first embodiment, in several possible embodiments, the step of determining an optimal heating method for the vehicle based on the at least one current cold-start parameter includes the steps of determining whether the current battery discharge power of the vehicle is limited; if the current battery discharge power of the vehicle is limited, the optimal heating method being to respond to the heating demands of the passenger compartment and / or the battery; and if the current battery discharge power of the vehicle is not limited, the optimal heating method being to respond to the heating demands of the passenger compartment.

[0010] The above technical solution enables the current battery It is possible to determine whether the discharge power is limited or not, and currently battery If discharge power is limited, it responds to heating requests for the crew compartment and / or batteries; otherwise, it responds to heating requests for the crew compartment.

[0011] Referring to the first embodiment, in several possible embodiments, when responding to the heating requirements of the occupant compartment and / or the battery, Vehicle The step of controlling the heat pump system to heat the vehicle using the optimal heating method includes the step of determining whether the current water outlet temperature is greater than the actual ambient temperature, and if the current water outlet temperature is less than or equal to the actual ambient temperature, Vehicle A step of controlling the heat pump system to enter a first preset operating mode, and the current water outlet temperature is Actual If the current outlet temperature is greater than the ambient temperature, it is determined whether the current outlet temperature satisfies the first preset temperature condition, and if the current outlet temperature does not satisfy the first preset temperature condition, Vehicle The heat pump system is controlled to enter a second preset operating mode, otherwise the above VehicleThe process includes the step of controlling the heat pump system to enter a third preset operating mode, wherein the power consumption of the compressor in the first preset operating mode is greater than the power consumption of the compressor in the second preset operating mode, and the power consumption of the compressor in the second preset operating mode is greater than the power consumption of the compressor in the third preset operating mode.

[0012] With the above technical solution, the current battery When the discharge power is limited, based on parameters such as the current water outlet temperature and the actual ambient temperature Vehicle The operating mode of the heat pump system can be determined, thereby saving power consumption and ensuring range.

[0013] Referring to the first embodiment, in several possible implementations, when responding to the heating request of the crew compartment, Vehicle The step of controlling the heat pump system to heat the vehicle using the optimal heating method includes the step of determining whether the current water outlet temperature is greater than the actual ambient temperature, and if the current water outlet temperature is less than or equal to the actual ambient temperature, Vehicle The steps include controlling the heat pump system to enter a fourth preset operating mode, and if the current outlet water temperature is greater than the actual ambient temperature, determining whether the current outlet water temperature satisfies a second preset temperature condition, and if the current outlet water temperature does not satisfy the second preset temperature condition, Vehicle The heat pump system is controlled to enter a fifth preset operating mode, otherwise the above Vehicle The process includes the step of controlling the heat pump system to enter a third preset operating mode, wherein the power consumption of the compressor in the fifth preset operating mode is greater than the power consumption of the compressor in the fourth preset operating mode, and the power consumption of the compressor in the fourth preset operating mode is greater than the power consumption of the compressor in the third preset operating mode.

[0014] With the above technical solution, the current batteryWhen the discharge power is not limited, based on parameters such as the current outlet water temperature and the actual ambient temperature Vehicle the operation mode of the heat pump system can be determined, thereby saving power consumption and ensuring endurance.

[0015] Referring to the first aspect, in some possible embodiments, when responding to the Heating request in the passenger compartment, the step of controlling the heat pump system to heat the vehicle in the optimal heating method includes the step of Vehicle determining whether the current discharge power of the vehicle is limited when the current operation mode of the heat pump system is the fourth preset operation mode, and when the current Vehicle discharge power is battery , the step of controlling the heat pump system to enter the first preset operation mode. When limited the Vehicle It further includes.

[0016] By the above technical solution, during vehicle driving, the battery discharge power is monitored in real time, and when the battery discharge power is not limited but becomes limited, Vehicle the operation mode of the heat pump system can be switched.

[0017] Referring to the first aspect, in some possible embodiments, when responding to the Heating request in the passenger compartment, the step of controlling the heat pump system to heat the vehicle in the optimal heating method includes the step of Vehicle determining whether the current discharge power is Vehicle when the current operation mode of the heat pump system is the fifth preset operation mode, and when the current battery discharge power is Limited or not, and when the current battery discharge power is When limited , the step of controlling the heat pump system to enter the second preset operation mode. Vehicle It further includes.

[0018] With the above technical solution, the battery discharge power is monitored in real time while the vehicle is running, and when the battery discharge power is not limited, it becomes limited. Vehicle The operating mode of the heat pump system can be switched.

[0019] In a second embodiment, a control device for a vehicle's heat pump system is provided, the control device comprising: an acquisition module for acquiring the actual ambient temperature of the environment in which the vehicle is currently located; a determination module for determining whether the actual ambient temperature is lower than a preset cold start temperature; and, if it is lower than the preset cold start temperature, acquiring at least one current cold start parameter of the vehicle, determining the optimal heating method for the vehicle based on the at least one current cold start parameter, and the Vehicle Includes a control module for controlling the heat pump system to heat the vehicle in the optimal heating manner.

[0020] Referring to the second embodiment and the above-described embodiment, in several possible embodiments, the at least one current cold-start parameter is the current discharge power of the power battery, water cooler This includes at least one of the current water outlet temperature and the current water temperature of the power battery.

[0021] Referring to a second embodiment, in several possible embodiments, the control module includes: a first determination unit for determining whether the current battery discharge power of the vehicle is limited; a first response unit for determining the optimal heating method to respond to heating requests for the passenger compartment and / or battery when the current battery discharge power of the vehicle is limited; and a second response unit for determining the optimal heating method to respond to heating requests for the passenger compartment when the current battery discharge power of the vehicle is not limited.

[0022] Referring to the second embodiment, in several possible realizations, the control module includes a second determination unit for determining whether the current outlet temperature is greater than the actual ambient temperature, and if the current outlet temperature is less than or equal to the actual ambient temperature, Vehicle A first control unit for controlling the heat pump system to enter a first preset operating mode, and the current water outlet temperature is Actual If the current outlet temperature is greater than the ambient temperature, it is determined whether the current outlet temperature satisfies the first preset temperature condition, and if the current outlet temperature does not satisfy the first preset temperature condition, Vehicle The heat pump system is controlled to enter a second preset operating mode, otherwise the above Vehicle The system includes a second control unit for controlling the heat pump system to enter a third preset operating mode, wherein the power consumption of the compressor in the first preset operating mode is greater than the power consumption of the compressor in the second preset operating mode, and the power consumption of the compressor in the second preset operating mode is greater than the power consumption of the compressor in the third preset operating mode.

[0023] Referring to the second embodiment, in several possible realizations, the control module includes a third determination unit for determining whether the current outlet temperature is greater than the actual ambient temperature, and if the current outlet temperature is less than or equal to the actual ambient temperature, Vehicle A third control unit for controlling the heat pump system to enter a fourth preset operating mode, and if the current outlet water temperature is greater than the actual ambient temperature, it determines whether the current outlet water temperature satisfies a second preset temperature condition, and if the current outlet water temperature does not satisfy the second preset temperature condition, Vehicle The heat pump system is controlled to enter a fifth preset operating mode, otherwise the above VehicleThe system includes a fourth control unit for controlling the heat pump system to enter a third preset operating mode, wherein the power consumption of the compressor in the fifth preset operating mode is greater than the power consumption of the compressor in the fourth preset operating mode, and the power consumption of the compressor in the fourth preset operating mode is greater than the power consumption of the compressor in the third preset operating mode.

[0024] Referring to the second aspect, in several possible implementations, the control module is the Vehicle A fourth determination unit for determining whether the current battery discharge power of the vehicle is limited when the current operating mode of the heat pump system is the fourth preset operating mode, and the current battery Discharge power When limited , the above Vehicle The system further includes a fifth control unit for controlling the heat pump system to enter a first preset operating mode.

[0025] Referring to the second aspect, in several possible implementations, the control module is the Vehicle If the current operating mode of the heat pump system is the fifth preset operating mode, then the current battery Discharge power Limited A fifth judgment unit for determining whether or not, and the current battery Discharge power When limited , the above Vehicle The system further includes a sixth control unit for controlling the heat pump system to enter a second preset operating mode.

[0026] A third embodiment provides a vehicle comprising memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program and implements the method in either the first embodiment or any one of the possible implementations of the first embodiment.

[0027] A fourth aspect provides a computer-readable storage medium that stores a computer program and, when the program is executed by a processor, implements the method in either the first aspect or any one of the possible implementations of the first aspect. [Brief explanation of the drawing]

[0028] [Figure 1] This is a schematic diagram of the structure of a vehicle heat pump system according to one embodiment of the present disclosure. [Figure 2] This is a schematic diagram 1 of the principle of a vehicle heat pump system according to one embodiment of the present disclosure. [Figure 3] This is a schematic diagram of the principle of a vehicle heat pump system according to one embodiment of the present disclosure. [Figure 4] Figure 3 shows a schematic diagram of the principle of a vehicle heat pump system according to one embodiment of the present disclosure. [Figure 5] Figure 4 shows a schematic diagram of the principle of a vehicle heat pump system according to one embodiment of the present disclosure. [Figure 6] Figure 5 shows a schematic diagram of the principle of a vehicle heat pump system according to one embodiment of the present disclosure. [Figure 7] This is a flowchart of the control method for the heat pump system of a vehicle provided in the embodiments of this disclosure. [Figure 8] This is a flowchart of a control method for a vehicle heat pump system according to one embodiment of the present disclosure. [Figure 9] This is a schematic diagram of the structure of the control device for the heat pump system of a vehicle according to an embodiment of the present disclosure. [Figure 10] This is a schematic diagram of the structure of a vehicle according to an embodiment of the present disclosure. [Modes for carrying out the invention]

[0029] The technical solutions in this disclosure will be described clearly and in detail below with reference to the drawings. Herein, in the description of embodiments of this disclosure, unless otherwise specified, " / " means "or," for example A / B can mean A or B, and "and / or" in text only indicates a related relationship that describes related objects, and there may be three types of relationships, for example A and / or B can indicate three cases: A exists alone, A and B exist together, and B exists alone, and in the description of embodiments of this disclosure, "multiple" means two or more.

[0030] Hereafter, the terms “First” and “Second” are used for descriptive purposes only and should not be understood as implying the number of technical features that are suggested or indicated to be of relative importance. Thus, features designated as “First” or “Second” may explicitly or implicitly include one or more such features.

[0031] In related technologies, when the ambient temperature is below -10°C, the refrigerant in the air conditioning system is generally insufficient to fully meet the system's heating needs. Related technologies employ a direct heat pump solution: when the ambient temperature is below -10°C, the crew compartment and battery are heated by a PTC heater; when the ambient temperature is above -10°C, the crew compartment is heated by absorbing external heat via a heat pump; and when the battery heating power is high, it is heated by a PTC heater. battery heating power If the temperature is low, the battery is heated by electrically driven preheating.

[0032] However, in related technologies, the thermal management of each component of the vehicle is independent of each other, which easily leads to energy waste and high overall power consumption. This affects the vehicle's range and degrades the user's driving experience, so improvements are needed.

[0033] Therefore, this disclosure provides a method for controlling a vehicle's heat pump system, thereby solving the above problem.

[0034] Before describing the control method for the vehicle heat pump system described in the embodiments of this disclosure, the structure of the embodiments of this disclosure will be described.

[0035] As shown in Figure 1, when an embodiment of the present disclosure is applied, the heat pump system 10 of the vehicle employing it comprises an expansion pot 101, a heat radiator 102, an electric drive unit 103, a water-cooled condenser 104, a liquid storage tank 105, a compressor 106, a hot air core 107, an evaporator 108, a blower 109, and an internal / external circulation damper motor 110. water cooler 111 and battery 112, temperature sensor 201, pressure sensor 202 and pressure-temperature sensor 203, nine-way valve 301, three-way valve 302, check valve 303, four-way valve 304, battery water pump BCPM, electric drive circuit water pump EDCP, hot air water pump HCPM, manual on / off valve MV, expansion valve EXV It may include a first on-off valve SOV1, a second on-off valve SOV2, a third on-off valve SOV3, an evaporator expansion valve EEXV, and a battery cooling expansion valve BEXV.

[0036] In actual application, the vehicle's heat pump system 10 can switch between different operating modes in response to changes in ambient temperature and waterway temperature during vehicle operation.

[0037] Figures 2-6 teeth This is a schematic diagram illustrating the operating principle of the vehicle's heat pump system 10 in different operating modes.

[0038] Figure 2 teeth This is a first preset operating mode of the heat pump system 10 of the vehicle in the embodiment of the present disclosure.

[0039] In the first pre-set operating mode, the water circulation at this time may involve the electric drive unit 103 moving straight ahead to absorb heat from the electric drive unit 103 and the environment, where the water channel is represented by the thick dashed line, exiting from port 7 of the nine-way valve 301, going to the heat sink 102, passing through the water pump EDCP of the electric drive circuit, and returning to port 1, which is connected to port 3, and exiting from port 3, water cooler After passing through 111, the circuit returns from gate 5, and then proceeds from gate 5 to gate 7 to realize the heat absorption circuit.

[0040] Figure 3 teeth This is a second preset operating mode of the heat pump system 10 of the vehicle in the embodiment of the present disclosure.

[0041] In the second pre-set operating mode, the water circulation exits from outlet 9 of the nine-way valve 301, passes through the electric drive unit 103 and returns to outlet 1, and then proceeds from outlet 1 to outlet 3. water cooler It is also possible to return to port 5 via 111 and connect from port 5 to port 9. At this time, compressor 106 is started, and as shown by the thick line in Figure 3, after exiting compressor 106, it enters water-cooled condenser 104, and further enters battery-cooled expansion valve BEXV, water cooler After recovering the residual heat via 111, the system can return to the compressor 106.

[0042] Figure 4 teeth This is a third preset operating mode of the heat pump system 10 of the vehicle in the embodiment of the present disclosure.

[0043] In the third pre-set operating mode, the water circulation exits from port 9 of the nine-way valve 301, passes through the electric drive circuit water pump EDCP and electric drive unit 103, and exits from port 1. 112 It then goes from port 1 to port 2, port 2 goes through a check valve to port 8, port 8 is connected to port 6, goes through the battery water pump BCPM to the battery, then returns to port 4, goes from port 4 to port 3, and exits from port 3. water cooler The circuit may then return to port 5 via port 111, and port 5 may be connected to port 9. In this mode, the HCTV control valve only supplies warm air.

[0044] Figure 5 teeth This is a fourth preset operating mode of the heat pump system 10 of the vehicle in the embodiment of the present disclosure.

[0045] In the fourth pre-set operating mode, the water circulation process exits from port 7 of the nine-way valve 301, enters the heat sink 102 for heat absorption, passes through the electric drive circuit water pump EDCP to the electric drive unit 103 for heat absorption, returns to port 1, then connects port 1 to port 3, and exits from port 3. water cooler Enter 111, water cooler Alternatively, the system could exit from outlet 111, return to outlet 5, and then connect from outlet 5 to outlet 7, thereby achieving a complete waste heat recovery process.

[0046] Figure 6 teeth This is a fifth preset operating mode of the heat pump system 10 of the vehicle in the embodiment of the present disclosure.

[0047] In the fifth pre-set operating mode, the water circulation process exits from port 9 of the nine-way valve 301, passes through the electric drive circuit water pump EDCP to the electric drive unit 103, returns to port 1, then connects to port 2 via port 1, exits from port 2 and returns to port 8, then passes from port 8 through port 6, enters battery 112 from port 6, directly heats battery 112, returns to port 4 after heating, and port 4 is further connected to port 3. water cooler After 111 recovers residual heat to the chiller, it returns to port 5, and then connects from port 5 to port 9. At this time, the control valve HCTV may also be used to flow hot air through the core.

[0048] The embodiments of this disclosure employ the above-mentioned vehicle heat pump system 10 and a method of adding water cooling to the hot air core, enabling the integration of thermal management between the battery, electric drive, hot air core, and environment. This supports the control method of the vehicle heat pump system described in the embodiments of this disclosure, selecting a corresponding heating method based on changes in water channel temperature, saving power consumption of the thermal management system, and improving the overall driving range of the vehicle.

[0049] As an example, as shown in Figure 7, the control method for the vehicle's heat pump system includes the following steps:

[0050] In step S701, the actual ambient temperature of the environment in which the vehicle is currently located is obtained.

[0051] As can be understood, when the external ambient temperature of a vehicle is relatively low, the vehicle requires an extra operating process during startup compared to ambient temperature, for example, it may need to heat the power battery. Therefore, embodiments of this disclosure can use the vehicle's sensors to obtain the actual ambient temperature of the environment in which it is currently located, and determine the vehicle's starting policy based on the actual ambient temperature.

[0052] In step S702, it is determined whether the actual ambient temperature is lower than the preset cold-start temperature.

[0053] In actual operation, the embodiments of this disclosure can determine whether the acquired actual ambient temperature is lower than a preset cold-start temperature. That is, if the actual ambient temperature is lower than the preset cold-start temperature, the vehicle must enter cold-start mode when starting. Here, the preset cold-start temperature may be 0°C, and those skilled in the art may set it appropriately according to the actual circumstances, and are not specifically limited thereto.

[0054] In step S703, if the temperature is lower than a preset cold start temperature, at least one current cold start parameter of the vehicle is obtained, and the optimal heating method for the vehicle is determined based on at least one current cold start parameter. Vehicle The heat pump system is controlled to heat the vehicle using the optimal heating method, where at least one current cold start parameter is the current discharge power of the power battery. water cooler This includes at least one of the current water outlet temperature and the current water temperature of the power battery.

[0055] One possible implementation is that when the actual ambient temperature is lower than a preset cold start temperature, the vehicle enters cold start mode, acquires at least one cold start-related parameter of the vehicle in real time, and determines or switches the optimal heating method of the vehicle in response to the dynamic change of the cold start-related parameter, thereby using the optimal heating method. Vehicle The vehicle is heated by controlling the heat pump system.

[0056] Here, at least one current cold-start parameter is the current discharge power of the power battery. water cooler This can include the current outlet water temperature and the current water temperature of the power battery, thereby determining the internal water temperature state of the vehicle in real time based on the vehicle's current cold-start parameters, adjusting the water circulation to achieve heat transfer, and thereby reducing power consumption.

[0057] Optionally, in one embodiment of the present disclosure, the step of determining the optimal heating method for a vehicle based on at least one current cold-start parameter includes the steps of determining whether the vehicle's current battery discharge power is limited, if the vehicle's current battery discharge power is limited, the optimal heating method being to respond to the heating demands of the passenger compartment and / or the battery, and if the vehicle's current battery discharge power is not limited, the optimal heating method being to respond to the heating demands of the passenger compartment.

[0058] In some embodiments, it is possible to determine whether the current battery discharge power of the vehicle is limited based on parameters such as the current discharge power of the power battery, and if it is determined that the current battery discharge power is limited, for example, when the SOC (state of charge) is less than 40% and the battery discharge power limiting is triggered, the optimal heating method of the embodiments of the present disclosure is to respond to the heating requests of the passenger compartment and / or the battery. Conversely, if the current battery discharge power is not limited, for example, when the battery is fully charged and the power output is not limited, the embodiments of the present disclosure can ignore the heating requests of the battery and respond only to the heating requests of the passenger compartment.

[0059] Optionally, in one embodiment of the present disclosure, when responding to a heating request for the occupant compartment and / or battery, Vehicle The step of controlling the heat pump system to heat the vehicle using the optimal heating method includes determining whether the current outlet water temperature is higher than the actual ambient temperature, and if the current outlet water temperature is lower than or equal to the actual ambient temperature, Vehicle The steps include controlling the heat pump system to enter a first preset operating mode, and the current water outlet temperature ActualIf the current water outlet temperature is greater than the ambient temperature, it is determined whether the current water outlet temperature satisfies the first preset temperature condition, and if the current water outlet temperature does not satisfy the first preset temperature condition, Vehicle The heat pump system is controlled to enter a second preset operating mode, otherwise Vehicle The process includes the step of controlling the heat pump system to enter a third preset operating mode, wherein the power consumption of the compressor in the first preset operating mode is greater than the power consumption of the compressor in the second preset operating mode, and the power consumption of the compressor in the second preset operating mode is greater than the power consumption of the compressor in the third preset operating mode.

[0060] As one possible implementation, an embodiment of the present disclosure can determine whether the current outlet temperature is greater than the actual ambient temperature, and if the outlet temperature is Actual When the temperature is lower than the ambient temperature, the heat sink dissipates heat, and the embodiments of this disclosure Vehicle The heat pump system can be controlled to enter the first preset operating mode shown in Figure 2 of the above embodiment, thereby realizing a heat absorption circuit.

[0061] Outflow water temperature Actual If the temperature is higher than the ambient temperature, the embodiments of this disclosure Actual It is possible to determine how much higher the temperature is compared to the ambient temperature, that is, whether the current outlet water temperature meets the first preset temperature condition, and if the outlet water temperature Actual If the ambient temperature is higher than the battery temperature, the embodiments of this disclosure cannot directly heat the battery, and in this case, the embodiments of this disclosure Vehicle The heat pump system can be controlled to enter a second preset operating mode shown in Figure 3, where the difference between the first preset operating mode and the second preset operating mode is that the circulating water does not pass through the radiator, and in both the first and second preset operating modes, the control valve HCTV can adjust its ratio according to the battery temperature.

[0062] If the current water outlet temperature satisfies the first preset temperature condition, and the water outlet temperature is greater than 0°C AND 5°C greater than the water temperature of the battery, then the embodiment of this disclosure Vehicle The heat pump system can be controlled to enter a third preset operating mode shown in Figure 4, in which the heat of the water outlet is sufficient and higher than the water temperature of the battery, and the hot water can heat the battery 112.

[0063] In summary, the embodiments of this disclosure allow the vehicle heating process to be divided into three stages from the time the vehicle is started until it is running, depending on the changes in the water temperature at the outlet and the water temperature of the battery.

[0064] In the initial stages, the crew compartment is heated under heavy load to prioritize and ensure heating of the crew compartment, and the interior temperature is raised by external discharge of the batteries.

[0065] In the mid-term phase, with a moderate load on the crew compartment Heat Prioritizing the comfort of the crew compartment, the interior is heated by external discharge of the battery, plus by residual heat from the electric drive unit.

[0066] In the later stages, with low load on the crew compartment Heat , the battery is under heavy load Heat The heat pump absorbs the residual heat from the electric drive unit 103, while also ensuring comfort in the crew compartment and heating the battery.

[0067] With this control logic, the embodiments of the present disclosure can flexibly utilize the residual heat of the electric drive unit 103, reducing the heating load of the system at each stage and reducing the power consumption of the compressor.

[0068] Optionally, in one embodiment of the present disclosure, when responding to a heating request for the crew compartment, Vehicle The step of controlling the heat pump system to heat the vehicle using the optimal heating method includes determining whether the current outlet water temperature is higher than the actual ambient temperature, and if the current outlet water temperature is lower than or equal to the actual ambient temperature, VehicleThe steps include controlling the heat pump system to enter a fourth preset operating mode, and if the current outlet water temperature is greater than the actual ambient temperature, determining whether the current outlet water temperature satisfies the second preset temperature condition, and if the current outlet water temperature does not satisfy the second preset temperature condition, Vehicle Control the heat pump system to enter the fifth preset operating mode, otherwise Vehicle The process includes the step of controlling the heat pump system to enter a third preset operating mode, wherein the power consumption of the compressor in the fifth preset operating mode is greater than the power consumption of the compressor in the fourth preset operating mode, and the power consumption of the compressor in the fourth preset operating mode is greater than the power consumption of the compressor in the third preset operating mode.

[0069] In actual implementation, the embodiments of this disclosure, when the power output of the power battery is not limited, can determine whether the current water outlet temperature is higher than the actual ambient temperature.

[0070] For example, after a vehicle enters cold start mode, the electric drive unit has no residual heat. water cooler The outlet water temperature is Actual When the ambient temperature is lower than the actual ambient temperature, and the actual ambient temperature is -7°C or lower, the embodiments of this disclosure are Vehicle The heat pump system is controlled to enter the fourth preset operating mode shown in Figure 5, absorbing heat from the environment and the expansion valve EXV This can be turned on to improve the heat generation of the compressor.

[0071] For example, if the actual ambient temperature is -7°C or higher, the embodiments of this disclosure may default to not turning on the expansion valve EXV, thereby reducing the power consumption of the compressor. In this case, as the vehicle moves, the electric drive unit generates heat, water cooler The water outlet temperature is monitored, and if the water outlet temperature does not meet a second preset temperature condition, for example, if the water outlet temperature is higher than the actual ambient temperature but the water temperature of the battery does not exceed 5°C, the embodiments of this disclosure are used to prevent heat from the electric drive from dissipating into the environment. VehicleThe heat pump system can be controlled to enter the fifth preset operating mode shown in Figure 6. During this process, the battery continues to discharge to the outside, causing its own temperature to continue to rise, that is, after heat has been recovered, water cooler The temperature is sufficiently high, and at this time it is not necessary to increase the rotation speed of the compressor. First, the battery is heated, and water cooler The system recovers the heat through this mechanism, heating the crew compartment and reducing the compressor's rotation speed.

[0072] Furthermore, in the above case, due to external discharge of the battery and passive thermal management of the battery, the battery temperature rises to a high temperature. water cooler If the water outlet temperature is higher than 5°C and the water temperature of the battery does not exceed 5°C, the embodiment of this disclosure is Vehicle The heat pump system can be controlled to switch from the fifth preset operating mode to the second preset operating mode. At this time, the water discharged from the electric drive unit reaches the chiller directly. Vehicle It operates using a heat pump system, increasing the compressor's rotation speed to recover more heat from the chiller, which is then used to heat the crew compartment and batteries.

[0073] As the vehicle continues to run, the heating load in the passenger compartment decreases, the heat in the electric drive gradually increases, and the water outlet temperature of the electric drive gradually rises. water cooler If the water outlet temperature satisfies a second preset temperature condition, for example, higher than 5°C and 5°C higher than the water temperature of the battery, then the embodiment of the present disclosure Vehicle The heat pump system can be controlled to enter a third preset operating mode, at which point the water discharged from the electric drive unit first enters the battery, and further water cooler This allows the electric drive's hot water to directly heat the battery, reducing the compressor's power consumption.

[0074] It should be noted that this mode, in the embodiments of this disclosure, only passively heats the battery, and the battery Heating request It does not actively heat up in response to something.

[0075] Optionally, in one embodiment of the present disclosure, the crew compartment Heating request When responding to, Vehicle The step of controlling the heat pump system to heat the vehicle using the optimal heating method is: Vehicle If the current operating mode of the heat pump system is the fourth preset operating mode, the step is to determine whether the vehicle's current battery discharge power is limited, and if the vehicle's current battery discharge power is limited case , Vehicle The further step includes controlling the heat pump system to enter a first preset operating mode.

[0076] As can be understood, when a vehicle is in motion, it consumes electricity in the power battery, and the discharge power of the power battery changes from being unlimited to being limited. Vehicle The operating mode of the heat pump system also needs to be changed accordingly.

[0077] In some examples, Vehicle If the current operating mode of the heat pump system is the fourth preset operating mode, and the discharge power of the power battery is not limited, then the embodiment of this disclosure is Vehicle The heat pump system can be controlled to enter a first pre-set operating mode, reducing power consumption and extending the range.

[0078] Optionally, in one embodiment of the present disclosure, the crew compartment Heating request When responding to, Vehicle The step of controlling the heat pump system to heat the vehicle using the optimal heating method is: Vehicle If the current operating mode of the heat pump system is the fifth preset operating mode, the step is to determine whether the vehicle's current battery discharge power is limited, and if the vehicle's current battery discharge power is limited case , Vehicle The further step includes controlling the heat pump system to enter a second preset operating mode.

[0079] In some other examples, VehicleThe current operating mode of the heat pump system is 5 Pre-configured In the case of an operating mode where the discharge power of the power battery is not limited and becomes limited, the embodiments of this disclosure are Vehicle The heat pump system can be controlled to enter a second, pre-set operating mode, reducing power consumption and extending the range.

[0080] Next, the operating principle of the control method for the vehicle heat pump system of the embodiment of this disclosure will be described in detail with respect to one specific embodiment. Vehicle The heat pump system can enable the selection and switching of operating modes while the vehicle is in motion, and this may be specifically shown in Figure 8.

[0081] As shown in Figure 8, embodiments of this disclosure may include steps S801 to S816.

[0082] In step S801, the vehicle starts, the air conditioning is turned on, and the ambient temperature is below 0°C. It can be determined that the environment is low temperature (below 0°C), the vehicle has started, and the vehicle is in a cold-start state, and at this time the air conditioning switches on to heating.

[0083] In step S802, the heating request is activated.

[0084] In step S803, it is determined whether or not the discharge power of the power battery is limited. If the discharge power of the power battery is limited, proceed to S814; otherwise, proceed to S804.

[0085] In step S804, the system responds to a request for heating in the crew compartment. When the battery's State of Charge (SOC) is 100%, the battery is fully charged and therefore the power output is not limited. In this system control, the battery heating Ignoring the request, the crew cabin heating Respond only to requests.

[0086] In step S805, water coolerDetermine whether the current outlet water temperature is higher than the actual ambient temperature. If it is higher than the actual ambient temperature, proceed to S809; otherwise, proceed to S806.

[0087] In step S806, Vehicle The heat pump system is controlled to enter the fourth preset operating mode. The vehicle is cold-started, and the electric drive unit has no preheating, for example. Actual If the ambient temperature is below -7°C, Vehicle The heat pump system is controlled to enter a fourth preset operating mode, absorbing heat from the environment, turning on the expansion valve EXV, and increasing the heat generated by the compressor. Actual If the ambient temperature is -7°C or higher, the expansion valve EXV is set to not turn on by default, reducing the compressor's power consumption.

[0088] In step S807, it is determined whether or not the discharge power of the power battery is limited. If the discharge power of the power battery is limited, proceed to S808; otherwise, Vehicle Maintain the current operating mode of the heat pump system.

[0089] In step S808, Vehicle The heat pump system is controlled to switch to a first pre-set operating mode.

[0090] In step S809, water cooler The system determines whether the current water outlet temperature is higher than the actual ambient temperature and whether it is 5°C higher than the battery's water temperature. If it is higher than the actual ambient temperature and 5°C higher than the battery's water temperature, the system proceeds to S813; otherwise, it proceeds to S810.

[0091] In step S810, Vehicle The heat pump system is controlled to enter the fifth preset operating mode. As the vehicle moves, the electric drive unit generates heat. water cooler The outlet water temperature is monitored, and if it is higher than the actual ambient temperature, in order to prevent heat from the electric drive from dissipating into the environment, Vehicle The heat pump system is controlled to enter a fifth pre-set operating mode.

[0092] During this process, the battery continues to discharge to the outside, causing its own temperature to continuously rise.

[0093] In step S811, it is determined whether or not the discharge power of the power battery is limited. If the discharge power of the power battery is limited, proceed to S812; otherwise, Vehicle Maintain the current operating mode of the heat pump system.

[0094] In step S812, Vehicle The heat pump system is controlled to switch to a second, pre-configured operating mode.

[0095] In step S813, Vehicle The heat pump system is controlled to enter a third preset operating mode. The vehicle continues to run, the heating load in the passenger compartment decreases, the heat in the electric drive gradually increases, and the outlet water temperature of the electric drive gradually rises. water cooler If the water temperature at the outlet is higher than 5°C, and also higher than the water temperature of the battery, Vehicle The heat pump system is controlled to enter the third preset operating mode. At this time, the water discharged from the electric drive unit first goes into the battery, and then water cooler This allows the electric drive's hot water to directly heat the battery, reducing the compressor's power consumption.

[0096] In this mode, the embodiments of the present disclosure merely passively heat the battery, Heating request It does not actively heat up in response to external discharge. Previously, the battery temperature rose to a relatively high temperature due to external discharge of the battery and the current passive heat management.

[0097] If the chiller's water outlet temperature is higher than 5°C, and the battery's water temperature does not exceed 5°C, Vehicle The heat pump system is controlled to switch to a second preset operating mode, and at this time the water output from the electric drive unit is directly water cooler Reached, Vehicle It operates using a heat pump system, increasing the rotational speed of the compressor, water cooler More heat is recovered from the engine and used to heat the crew compartment and batteries.

[0098] In step S814, the system responds to the heating request for the crew compartment and / or the battery. This mode is already active for the battery. heating In response to the requirements, the battery inlet temperature can reach 40°C, rapidly increasing the battery temperature and improving discharge efficiency.

[0099] During this process, if the SOC is below 40%, power limiting of battery discharge is triggered. Vehicle The operating mode of the heat pump system switches based on the current waterway conditions.

[0100] In this control policy, the dynamic changes in the system's heating at each stage are as follows:

[0101] In the initial stages, the crew compartment is heated under heavy load to prioritize and ensure heating of the crew compartment, and the interior temperature is raised by external discharge of the batteries.

[0102] In the mid-term phase, with a moderate load on the crew compartment Heat Prioritizing the comfort of the crew compartment, the interior is heated by external discharge of the battery, plus by residual heat from the electric drive unit.

[0103] In the later stages, with low load on the crew compartment Heat , the battery is under heavy load Heat The heat pump absorbs the residual heat from the electric drive unit, while also ensuring comfort in the crew compartment and heating the batteries.

[0104] This control logic allows for flexible utilization of the residual heat of the electric drive, reducing the heating load of the system at each stage and lowering the power consumption of the compressor. The specific mode switching method is as follows:

[0105] In step S815, water coolerDetermine whether the current outlet water temperature is higher than the actual ambient temperature. If it is higher than the actual ambient temperature, proceed to S816; otherwise, proceed to S808.

[0106] In step S816, water cooler The system determines whether the current outlet water temperature is higher than the actual ambient temperature and whether it is 5°C higher than the battery water temperature. If it is higher than the actual ambient temperature and 5°C higher than the battery water temperature, the system proceeds to S813; otherwise, it proceeds to S812.

[0107] In summary, this disclosure determines the optimal heating method based on the vehicle's current cold-start parameters when the actual ambient temperature is lower than a preset cold-start temperature, and thereby uses the optimal heating method. Vehicle The heat pump system can be controlled to heat the vehicle, taking into account the vehicle's integrated parameters and heating demands, integrating thermal management between the battery, electric drive, hot air core, and environment, and achieving comprehensive thermal management throughout the entire operating process based on the dynamic parameter changes of the vehicle's movement. Vehicle By operating the heat pump system in an efficient range, heating power consumption is reduced, thereby improving the vehicle's range and enhancing the user's driving experience.

[0108] Figure 9 is a schematic block diagram of the control device for a vehicle heat pump system provided in an embodiment of the present disclosure.

[0109] As shown in Figure 9, the control device 90 of the vehicle's heat pump system includes an acquisition module 901, a decision module 902, and a control module 903.

[0110] Specifically, the acquisition module 901 is used to acquire the actual ambient temperature of the environment in which the vehicle is currently located, the determination module 902 is used to determine whether the actual ambient temperature is lower than a preset cold-start temperature, and the control module 903, if it is lower than the preset cold-start temperature, acquires at least one current cold-start parameter of the vehicle and determines the optimal heating method for the vehicle based on at least one current cold-start parameter. Vehicle It is used to control the heat pump system and heat the vehicle using the optimal heating method.

[0111] Optionally, in one embodiment of the present disclosure, at least one current cold-start parameter is the current discharge power of the power battery, water cooler This includes at least one of the current water outlet temperature and the current water temperature of the power battery.

[0112] Optionally, in one embodiment of the present disclosure, the control module 903 includes a first decision unit, a first response unit, and a second response unit.

[0113] Here, the first decision unit is used to determine whether the vehicle's current battery discharge power is limited, the first response unit is used to determine the optimal heating method to respond to the heating request of the passenger compartment and / or battery when the vehicle's current battery discharge power is limited, and the second response unit is used to determine the optimal heating method to respond to the heating request of the passenger compartment when the vehicle's current battery discharge power is not limited.

[0114] Optionally, in one embodiment of the present disclosure, the control module 903 includes a second decision unit, a first control unit, and a second control unit.

[0115] Here, the second decision unit is used to determine whether the current outlet water temperature is greater than the actual ambient temperature, and the first control unit, if the current outlet water temperature is less than or equal to the actual ambient temperature, VehicleThe second control unit is used to control the heat pump system and enter a first preset operating mode, and the current water outlet temperature is Actual If the current outlet temperature is higher than the ambient temperature, it is determined whether the current outlet temperature satisfies the first preset temperature condition, and if the current outlet temperature does not satisfy the first preset temperature condition, Vehicle The heat pump system is controlled to enter a second preset operating mode, otherwise Vehicle This is used to control the heat pump system to enter a third preset operating mode, where the power consumption of the compressor in the first preset operating mode is greater than the power consumption of the compressor in the second preset operating mode, and the power consumption of the compressor in the second preset operating mode is greater than the power consumption of the compressor in the third preset operating mode.

[0116] Optionally, in one embodiment of the present disclosure, the control module 903 includes a third decision unit, a third control unit, and a fourth control unit.

[0117] Here, the third decision unit is used to determine whether the current outlet water temperature is greater than the actual ambient temperature, and the third control unit, if the current outlet water temperature is less than or equal to the actual ambient temperature, Vehicle Used to control the heat pump system and enter a fourth preset operating mode, the fourth control unit determines whether the current outlet water temperature satisfies a second preset temperature condition if the current outlet water temperature is greater than the actual ambient temperature, and if the current outlet water temperature does not satisfy the second preset temperature condition, Vehicle Control the heat pump system to enter the fifth preset operating mode, otherwise Vehicle This is used to control the heat pump system to enter a third preset operating mode, where the power consumption of the compressor in the fifth preset operating mode is greater than the power consumption of the compressor in the fourth preset operating mode, and the power consumption of the compressor in the fourth preset operating mode is greater than the power consumption of the compressor in the third preset operating mode.

[0118] Optionally, in one embodiment of the present disclosure, the control module 903 further includes a fourth decision unit and a fifth control unit.

[0119] Here, the fourth decision unit is: Vehicle If the current operating mode of the heat pump system is the fourth preset operating mode, it is used to determine whether the vehicle's current battery discharge power is limited, and the fifth control unit is currently battery Discharge power Limited case, Vehicle It is used to control the heat pump system and enter a first preset operating mode.

[0120] Optionally, in one embodiment of the present disclosure, the control module 903 further includes a fifth decision unit and a sixth control unit.

[0121] Here, the fifth decision unit is: Vehicle If the current operating mode of the heat pump system is the fifth preset operating mode, Vehicle current battery Discharge power Limited Used to determine whether or not, the sixth control unit is currently battery Discharge power Limited case, Vehicle It is used to control the heat pump system and enter a second, pre-set operating mode.

[0122] Furthermore, the interpretation and explanation of the embodiment of the control method for the vehicle's heat pump system described above also applies to the control device for the vehicle's heat pump system in that embodiment, and therefore the explanation is omitted here.

[0123] In summary, this disclosure determines the optimal heating method based on the vehicle's current cold-start parameters when the actual ambient temperature is lower than a preset cold-start temperature, and thereby uses the optimal heating method. VehicleThe heat pump system can be controlled to heat the vehicle, taking into account the vehicle's integrated parameters and heating demands, integrating thermal management between the battery, electric drive, hot air core, and environment, and achieving comprehensive thermal management throughout the entire operating process based on the dynamic parameter changes of the vehicle's movement. Vehicle By operating the heat pump system in an efficient range, heating power consumption is reduced, thereby improving the vehicle's range and enhancing the user's driving experience.

[0124] Figure 10 is a schematic diagram of the structure of a vehicle according to an embodiment of the present disclosure. The vehicle is It may include memory 1001, a processor 1002, and a computer program stored in memory 1001 and executable by processor 1002.

[0125] When the processor 1002 executes the program, it realizes the control method for the vehicle's heat pump system provided in the above-described embodiment.

[0126] Furthermore, the vehicle further includes a communication interface 1003 for communication between the memory 1001 and the processor 1002, and a memory 1001 for storing computer programs executable by the processor 1002. The memory 1001 may include high-speed RAM (Random Access Memory) memory and may further include non-volatile memory such as at least one magnetic disk memory.

[0127] When the memory 1001, processor 1002, and communication interface 1003 are implemented independently, the communication interface 1003, memory 1001, and processor 1002 can be interconnected via a bus to complete communication between them. The bus is an ISA (Industry Standard Architecture) bus, PCI ( peripheral component interconnectThis may be a peripheral device connection bus, or an EISA (Extended Industry Standard Architecture) bus, etc. Buses can be divided into address buses, data buses, control buses, etc. For ease of illustration, Figure 10 shows only one thick line, but this does not mean that there is only one bus or only one type of bus.

[0128] If, optionally in a specific implementation, the memory 1001, processor 1002, and communication interface 1003 are integrated onto a single chip, then the memory 1001, processor 1002, and communication interface 1003 can complete communication with each other via an internal interface.

[0129] The processor 1002 may be a single CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to carry out the embodiments of this disclosure.

[0130] This embodiment further provides a computer-readable storage medium in which a computer program is stored that implements a method for controlling the heat pump system of the above-mentioned vehicle when executed by a processor.

[0131] Furthermore, the terms “first” and “second” are used solely for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly suggesting the number of designated technical features. Thus, features designated as “first” and “second” may explicitly or implicitly include at least one such feature. In the description of this disclosure, “plural” means at least two, such as two, three, etc., unless otherwise specified.

[0132] In this specification, the terms “one embodiment,” “several embodiments,” “example,” “specific example,” or “several examples” mean that the specific features, structures, materials, or properties described in combination with such embodiment or example are included in at least one embodiment or example of this disclosure. In this specification, a general description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials, or properties described may be combined in an appropriate manner in any one or more embodiments or examples. Also, a person skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described herein, provided that they are not inconsistent.

[0133] While the embodiments of this disclosure have been shown and described above, it should be understood that these embodiments are illustrative and should not be understood as limiting the disclosure, and those skilled in the art can modify, alter, substitute, and transform these embodiments within the scope of this disclosure.

[0134] This disclosure claims priority to the Chinese patent application filed on September 12, 2023, with application number 202311182649.5, titled "Method, apparatus, vehicle, and storage medium for controlling a vehicle's heat pump system," the entirety of which is incorporated herein by reference. [Explanation of Symbols]

[0135] 10- Vehicle heat pump system, 101- Expansion pot, 102- Radiator, 103- Electric drive unit, 104- Water-cooled condenser, 105- Liquid storage tank, 106- Compressor, 107- Hot air core, 108- Evaporator, 109- Blower, 110- Internal and external circulation damper motor, 111- water cooler 112-Battery, 201-Temperature Sensor, 202-Pressure Sensor, 203-Pressure-Temperature Sensor, 301-Nine-Way Valve, 302-Three-Way Valve, 303-Check Valve, 304-Four-Way Valve, BCPM-Battery Water Pump, EDCP-Electric Drive Circuit Water Pump, HCPM-Hot Air Water Pump, MV-Manual On / Off Valve, EXV- Expansion valve, SOV1 - First on / off valve, SOV2 - Second on / off valve, SOV3 - Third on / off valve, EEXV - Evaporator expansion valve, BEXV - Battery cooling expansion valve, HCTV - Control valve, 90 - Control of the vehicle's heat pump system, 901 - Acquisition module, 902 - Decision module, 903 - Control module.

Claims

1. A method for controlling a vehicle's heat pump system, The steps include obtaining the actual ambient temperature of the environment in which the vehicle is currently located, The steps include determining whether the actual ambient temperature is lower than a preset cold start temperature, The process includes the steps of: obtaining at least one current cold-start parameter of the vehicle if it is lower than the preset cold-start temperature; determining the optimal heating method for the vehicle based on the at least one current cold-start parameter; and controlling the heat pump system to heat the vehicle using the optimal heating method. A method for controlling a vehicle's heat pump system.

2. The at least one current cold-start parameter includes at least one of the current discharge power of the power battery, the current outlet water temperature of the chiller water cooler, and the current water temperature of the power battery. The method according to claim 1.

3. The step of determining the optimal heating method for the vehicle based on at least one current cold start parameter is: A step of determining whether the current battery discharge power of the vehicle is limited, If the current battery discharge power of the vehicle is limited, the optimal heating method is to respond to the heating requirements of the passenger compartment and / or the battery. The step of making the optimal heating method to respond to the heating request of the passenger compartment, provided that the current battery discharge power of the vehicle is not limited, The method according to claim 2.

4. In response to a heating request from the occupant compartment and / or the battery, the step of controlling the heat pump system to heat the vehicle in the optimal heating manner is: The steps include determining whether the current water outlet temperature is greater than the actual ambient temperature, If the current water outlet temperature is below the actual ambient temperature, the heat pump system is controlled to enter a first preset operating mode. The steps include: determining whether the current water outlet temperature satisfies a first preset temperature condition if the current water outlet temperature is greater than the ambient temperature, and if the current water outlet temperature does not satisfy the first preset temperature condition, controlling the heat pump system to enter a second preset operating mode; otherwise, controlling the heat pump system to enter a third preset operating mode; The power consumption of the compressor in the first preset operating mode is greater than the power consumption of the compressor in the second preset operating mode, and the power consumption of the compressor in the second preset operating mode is greater than the power consumption of the compressor in the third preset operating mode. The method according to claim 3.

5. In response to a heating request for the passenger compartment, the step of controlling the heat pump system to heat the vehicle using the optimal heating method is: The steps include determining whether the current water outlet temperature is greater than the actual ambient temperature, If the current water outlet temperature is below the actual ambient temperature, the heat pump system is controlled to enter a fourth preset operating mode. The process includes the step of determining whether the current water outlet temperature satisfies a second preset temperature condition if the current water outlet temperature is greater than the actual ambient temperature, and if the current water outlet temperature does not satisfy the second preset temperature condition, controlling the heat pump system to enter a fifth preset operating mode; otherwise, controlling the heat pump system to enter a third preset operating mode. The power consumption of the compressor in the fifth preset operating mode is greater than the power consumption of the compressor in the fourth preset operating mode, and the power consumption of the compressor in the fourth preset operating mode is greater than the power consumption of the compressor in the third preset operating mode. The method according to claim 3.

6. In response to a heating command for the passenger compartment, the step of controlling the heat pump system to heat the vehicle using the optimal heating method is: If the current operating mode of the heat pump system is the fourth preset operating mode, the step of determining whether the current battery discharge power of the vehicle is limited is: The further step includes controlling the heat pump system to enter a first preset operating mode if the current discharge power satisfies the preset battery management intervention conditions, The method according to claim 5.

7. In response to a heating command for the crew compartment, the step of controlling the heat pump system to heat the vehicle using the optimal heating method is: If the current operating mode of the heat pump system is the fifth preset operating mode, the step is to determine whether the current discharge power satisfies the preset battery management intervention conditions. The further step includes controlling the heat pump system to enter a second preset operating mode if the current discharge power satisfies the preset battery management intervention condition, The method according to claim 5.

8. A control device for a vehicle's heat pump system, An acquisition module for obtaining the actual ambient temperature of the environment in which the vehicle is currently located, A determination module for determining whether the actual ambient temperature is lower than a preset cold start temperature, A control module for obtaining at least one current cold-start parameter of the vehicle if it is lower than the preset cold-start temperature, determining the optimal heating method for the vehicle based on the at least one current cold-start parameter, and controlling the heat pump system to heat the vehicle using the optimal heating method, is included. Control device for a vehicle's heat pump system.

9. The system includes memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to realize a control method for a vehicle heat pump system according to any one of claims 1 to 7. vehicle.

10. A computer program for implementing a control method for a vehicle heat pump system according to any one of claims 1 to 7 is stored when executed by a processor. A computer-readable storage medium.

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