Control method of thermal management system, vehicle and storage medium

Abstract

The invention discloses a control method of a thermal management system, a vehicle and a storage medium. The method comprises the following steps: acquiring a user driving demand corresponding to a vehicle and a state parameter of at least one target device on the vehicle; determining an operation mode of a thermal management system on the vehicle based on the user driving demand and the state parameter; constructing a loop control instruction of at least one thermal management loop in the thermal management system based on the operation mode and the user driving demand; and controlling the thermal management loop to operate based on the loop control instruction so as to control the thermal management system to operate. The technical problem that a heat management system in the related technology is low in heat energy utilization rate is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle engineering, and in particular, to a control method of a thermal management system, a vehicle and a storage medium. BACKGROUND

[0002] With the rapid development of electric vehicle technology, electric vehicles have shown significant advantages in environmental protection and energy conservation, and have gradually become the mainstream trend of the global automobile industry. However, the endurance and heating efficiency of electric vehicles in low-temperature environments have always been major challenges faced by the industry. The current thermal management system of electric vehicles has a low utilization rate of energy, which leads to a high energy consumption of electric vehicles in order to meet the thermal management needs of users, thereby reducing the endurance of electric vehicles.

[0003] In view of the above problems, no effective solution has been proposed so far. SUMMARY

[0004] The embodiments of the present application provide a control method of a thermal management system, a vehicle and a storage medium, to at least solve the technical problem of low utilization rate of thermal energy of the thermal management system in the related art.

[0005] According to an aspect of an embodiment of the present application, a control method of a thermal management system is provided, comprising: obtaining a user driving demand corresponding to a vehicle, and a state parameter of at least one target device on the vehicle, wherein the target device is used to perform a driving action corresponding to the user driving demand, and the state parameter is used to reflect a current thermodynamic state of the target device; determining an operation mode of a thermal management system on the vehicle based on the user driving demand and the state parameter, wherein the thermal management system is used to adjust the thermodynamic state of the target device; constructing a loop control instruction of at least one thermal management loop in the thermal management system based on the operation mode and the user driving demand; and controlling the thermal management loop to operate based on the loop control instruction, so as to control the thermal management system to operate.

[0006] Further, determining the operation mode of the thermal management system on the vehicle based on the user driving demand and the state parameter comprises: determining a target thermodynamic state of the target device based on the user driving demand, wherein the target thermodynamic state is used to represent a thermodynamic state that the target device needs to reach; matching the state parameter with the target thermodynamic state to obtain a first matching result, wherein the first matching result is used to reflect a difference between the current thermodynamic state of the target device and the target thermodynamic state; and inputting the first matching result into a mode determination model to determine the operation mode by using the mode determination model.

[0007] Further, the mode determination model comprises a priority determination module and a mode determination module; the first matching result is input into the mode determination model, and the operation mode is determined by using the mode determination model, comprising: based on the first matching result, the control priority of the target device is determined by using the priority determination module, wherein the control priority is used to reflect the demand degree of the target device for thermal energy; based on the control priority and the state parameter, the operation mode is determined by using the mode determination module.

[0008] Further, based on the operation mode and the user driving demand, the loop control instruction of at least one heat management loop in the heat management system is constructed, comprising: based on the operation mode and the user driving demand, the first device and the second device are determined from the target device, wherein the first device is used to process the thermal energy generated by any one target device through the heat management loop, and the second device is used to represent the device capable of receiving or dissipating thermal energy through the heat management loop; the user driving demand is analyzed to obtain the first control demand of the first device and the second control demand of the second device; based on the first control demand and the second control demand, the loop control instruction is constructed.

[0009] Further, based on the operation mode and the user driving demand, the first device and the second device are determined from the target device, comprising: based on the operation mode, the target device is evaluated to obtain a device evaluation result, wherein the device evaluation result is used to represent the ability of the target device to process heat; based on the device evaluation result, the first device is selected from the target device; based on the user driving demand, the importance of the target device is evaluated to obtain an importance evaluation result, wherein the importance evaluation result is used to represent the importance of the target device in meeting the user driving demand; based on the importance evaluation result, the second device is selected from the target device.

[0010] Further, based on the operation mode, the target device is evaluated to obtain a device evaluation result, comprising: in response to the operation mode being a multi-thermal-source heating mode, the quality of the thermal energy generated by the target device is evaluated to obtain a quality evaluation result; wherein the multi-thermal-source heating mode is used to represent a mode in which the second device is heated by using the thermal energy generated by the first device when the ambient temperature of the environment in which the vehicle is located is less than a first preset temperature, and the quality evaluation result is used to represent the conversion efficiency between the thermal energy generated by the target device and other driving energy, and the quality evaluation result belongs to the device evaluation result.

[0011] Further, based on the operation mode, the target device is evaluated to obtain a device evaluation result, including: in response to the operation mode being a heat storage and defrosting mode, a heat capacity of the target device is evaluated to obtain a heat capacity evaluation result; wherein the heat storage and defrosting mode is used to represent a mode in which heat energy generated by the first device is stored when the vehicle is in a preset scene, and the stored heat energy is used to defrost the second device, the preset scene is used to represent that the second device needs to be defrosted, and the heat capacity evaluation result is used to represent the efficiency of the target device in storing generated heat, and the heat capacity evaluation result belongs to the device evaluation result.

[0012] Further, based on the operation mode, the target device is evaluated to obtain a device evaluation result, including: in response to the operation mode being a heat storage and defrosting mode, a heat capacity of the target device is evaluated to obtain a heat capacity evaluation result; wherein the heat storage and defrosting mode is used to represent a mode in which heat energy generated by the first device is stored when the vehicle is in a preset scene, and the stored heat energy is used to defrost the second device, the preset scene is used to represent that the second device needs to be defrosted, and the heat capacity evaluation result is used to represent the efficiency of the target device in storing generated heat, and the heat capacity evaluation result belongs to the device evaluation result.

[0013] Further, based on the operation mode, the target device is evaluated to obtain a device evaluation result, including: in response to the operation mode being a heat storage and defrosting mode, a heat capacity of the target device is evaluated to obtain a heat capacity evaluation result; wherein the heat storage and defrosting mode is used to represent a mode in which heat energy generated by the first device is stored when the vehicle is in a preset scene, and the stored heat energy is used to defrost the second device, the preset scene is used to represent that the second device needs to be defrosted, and the heat capacity evaluation result is used to represent the efficiency of the target device in storing generated heat, and the heat capacity evaluation result belongs to the device evaluation result.

[0014] According to another aspect of the embodiment of the present application, a control device of a thermal management system is also provided, including: a first acquisition module, configured to acquire a user driving demand corresponding to a vehicle and a state parameter of at least one target device on the vehicle, wherein the target device is configured to perform a driving action corresponding to the user driving demand, and the state parameter is configured to reflect a current thermodynamic state of the target device; a first determination module, configured to determine an operation mode of a thermal management system on the vehicle based on the user driving demand and the state parameter, wherein the thermal management system is configured to adjust the thermodynamic state of the target device; a first construction module, configured to construct a loop control instruction of at least one thermal management loop in the thermal management system based on the operation mode and the user driving demand; and a first control module, configured to control the thermal management loop to operate based on the loop control instruction, so as to control the thermal management system to operate.

[0015] According to another aspect of the embodiments of the present application, a vehicle is also provided, comprising a memory storing an executable program; and a processor configured to execute the program, wherein the program, when executed, performs the method in the embodiments of the present application.

[0016] According to another aspect of the embodiments of the present application, a computer readable storage medium is also provided, comprising a stored executable program, wherein the executable program, when executed, controls a device in which the computer readable storage medium is located to perform the method in the embodiments of the present application.

[0017] According to another aspect of the embodiments of the present application, a computer program product is also provided, comprising a computer program which, when executed by a processor, implements the method in the embodiments of the present application.

[0018] According to another aspect of the embodiments of the present application, a computer program product is also provided, comprising a non-volatile computer readable storage medium storing a computer program which, when executed by a processor, implements the method in the embodiments of the present application.

[0019] According to another aspect of the embodiments of the present application, a computer program is also provided which, when executed by a processor, implements the method in the embodiments of the present application.

[0020] In the embodiments of the present application, the user driving demand corresponding to the vehicle and the state parameters of at least one target device on the vehicle are acquired; the operation mode of the thermal management system on the vehicle is determined based on the user driving demand and the state parameters; the loop control instruction of at least one thermal management loop in the thermal management system is constructed based on the operation mode and the user driving demand; and the thermal management loop is controlled to operate based on the loop control instruction, so as to control the operation of the thermal management system. In this way, by collecting the instant demand of the user for the vehicle and the state parameters of the target device, a data basis is provided for the thermal management decision, and the operation mode of the thermal management system is determined based on the user driving demand and the state parameters, so that the operation mode can meet the user driving demand and conform to the actual state of the target device. Once the operation mode is determined, the control system generates a fine loop control instruction based on the characteristics of the determined operation mode and the user driving demand, and controls the thermal management loop to operate based on the loop control instruction, so as to ensure that the entire thermal management system can operate strictly according to the determined operation mode, realize precise management of thermal energy, and achieve the purpose of improving the thermal management efficiency and energy utilization rate of the thermal management system under various working conditions, thereby solving the technical problem of low utilization rate of thermal energy of the thermal management system in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0022] Figure 1 is a flow chart of a control method of a thermal management system according to an embodiment of the application;

[0023] Figure 2 is a schematic diagram of an optional thermal management system operation mode selection process according to an embodiment of the application;

[0024] Figure 3 is a working flow chart of an optional extremely cold multi-heat source collaborative heating mode according to an embodiment of the application;

[0025] Figure 4 is a working flow chart of an optional intelligent heat storage and lossless defrosting mode according to an embodiment of the application;

[0026] Figure 5 is a working flow chart of an optional waste heat priority heating mode according to an embodiment of the application;

[0027] Figure 6 is a working flow chart of an optional enhanced refrigeration mode according to an embodiment of the application;

[0028] Figure 7 is a schematic diagram of a control device of a thermal management system according to an embodiment of the application. DETAILED DESCRIPTION

[0029] In order to enable persons skilled in the art to better understand the application scheme, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by persons skilled in the art without creative labor should fall within the protection scope of the application.

[0030] It is to be understood that the terms "first", "second", and the like used in the description and the claims of the present application as well as the above-described drawings are used to distinguish similar objects, and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the present application described herein are capable of operation in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprise", "comprising", "include", "including", and the like used herein are specifically intended to be construed in an inclusive sense and not in an exclusive sense unless otherwise indicated.

[0031] According to an embodiment of the present application, an embodiment of a control method of a thermal management system is provided. It is to be understood that the steps shown in the flowcharts of the drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowcharts, in some cases, the steps shown or described herein can be executed in an order different from that shown herein.

[0032] Figure 1 is a flowchart of a control method of a thermal management system according to an embodiment of the present application, as shown in Figure 1 the method comprises the following steps:

[0033] In step S102, a user driving demand corresponding to a vehicle is obtained, and a state parameter of at least one target device on the vehicle is obtained, wherein the target device is used to execute a driving action corresponding to the user driving demand, and the state parameter is used to reflect a current thermodynamic state of the target device.

[0034] The user driving demand can be a specific expectation or instruction of a driver or other passenger on the operation of the vehicle. For example, the user driving demand can be acceleration, deceleration, steering, parking, maintaining a constant speed, or comfort demand (such as air conditioning temperature adjustment), but is not limited thereto. In the thermal management system, the user driving demand can be more inclined to the comfort and performance requirements of the vehicle environment.

[0035] The target device can refer to a vehicle component or system directly involved in executing the user driving demand. For example, the target device can include at least one or more of the following: an air conditioning system, a battery management system, a motor control system, etc., but is not limited thereto.

[0036] The state parameter can be a parameter used to describe the current operating condition of the target device. For example, the state parameter can include at least one or more of the following: temperature, pressure, humidity, temperature and flow rate of cooling liquid, charging and discharging efficiency of the battery, output power and operating temperature of the motor, etc., but is not limited thereto.

[0037] The driving action can be an action performed by the vehicle in response to the user driving demand, for example, the driving action can include at least one or more of the following: accelerating by pressing the accelerator, decelerating by pressing the brake, changing direction by turning the steering wheel, and operating the thermal management system, but not limited thereto.

[0038] In an optional embodiment, it is considered that analyzing the user driving demand can help the system to predict the upcoming load change, so as to adjust the thermal management strategy in advance. The state parameter of the target device can reflect the thermodynamic state of the target device in real time, which not only helps to detect whether the target device is running normally in real time, but also adjusts the thermal management process according to the current working state of the target device. Therefore, in order to realize more efficient and accurate energy management and distribution, the control system (hereinafter referred to as the control system) of the thermal management system can obtain the user driving demand corresponding to the vehicle, and the state parameter of at least one device on the vehicle for performing the driving action corresponding to the user driving demand, that is, the state parameter of the target device.

[0039] For example, the control system can receive the operation instruction of the user for the vehicle through the touch screen or the voice recognition system on the vehicle, so as to analyze the user driving demand. At the same time, the control system can also use the sensor pre-deployed in the target device to obtain the state parameter of the at least one target device.

[0040] For another example, the user presets the future departure time through the mobile phone application, and before the departure time arrives, the control system can obtain the state parameter of the at least one target device to complete the preparation work before controlling the thermal management system, thereby improving the working efficiency of the control system.

[0041] Step S104, determining the running mode of the thermal management system on the vehicle based on the user driving demand and the state parameter, wherein the thermal management system is used to adjust the thermodynamic state of the target device.

[0042] The running mode can be a mode for the vehicle to adapt to different environmental conditions and user driving demands, so as to improve energy utilization and improve driving experience. For example, the running mode can include at least one or more of the following: extreme cold multi-heat source cooperative heating mode, intelligent heat accumulation and loss-free defrosting mode, waste heat priority heating mode, enhanced refrigeration mode, and standard refrigeration or heating mode, but not limited thereto.

[0043] In an optional embodiment, considering that the thermal load and heat source characteristics of the vehicle will change significantly under different environments and working conditions, for example, in cold weather, the battery needs to be quickly heated to maintain good charge and discharge performance, while in hot summer, efficient cooling becomes the primary task. Therefore, the control system can intelligently select the operating mode of the thermal management system based on the user driving demand and state parameters obtained in the foregoing steps, so as to realize the accurate characteristics of the thermodynamic state of the above-mentioned target equipment, and thus improve the performance of the thermal management system, so that the thermal management system meets the needs of the driver while ensuring the rational use of energy.

[0044] For example, in the scenario of winter city commuting, the above-mentioned user driving demand can be to quickly heat the battery and heat the passenger compartment. At this time, the control system can combine the above-mentioned user driving demand with the above-mentioned state parameters obtained to determine the above-mentioned operating mode. For example, if the above-mentioned state parameters indicate that the temperature of the battery pack is too low, the control system can determine the above-mentioned operating mode as a working mode that can preferentially improve the temperature of the battery pack, and after the above-mentioned battery pack temperature recovers to a safe temperature range, the control system can determine the above-mentioned operating mode as a working mode that can quickly raise the temperature of the passenger compartment.

[0045] For another example, in the scenario of summer highway driving, the above-mentioned user driving demand can be to efficiently cool the passenger compartment, and the above-mentioned state parameters indicate that the temperature of the battery pack does not exceed the high temperature threshold, at this time, the control system can determine the above-mentioned operating mode as a working mode that can quickly reduce the temperature of the passenger compartment.

[0046] Step S106, based on the operating mode and the user driving demand, constructing a loop control instruction of at least one thermal management loop in the thermal management system.

[0047] The above-mentioned loop control instruction can be a specific command issued by the control system for guiding and adjusting the working state and parameters of each thermal management loop to meet different operating modes and user driving demands. For example, the above-mentioned loop control instruction can include at least one or more of the following: valve control instruction, pump speed control instruction, compressor control instruction, expansion valve opening degree control instruction, and fan speed control instruction, but not limited thereto.

[0048] In an optional embodiment, it is considered that the above-mentioned thermal management system not only ensures that key components such as the battery, motor and electronic control run at a suitable temperature, but also meets the comfort needs of the passenger cabin. This requires the above-mentioned control system to accurately regulate the working state of each thermal management loop inside the thermal management system according to different operating conditions and user driving needs. Therefore, the control system can generate loop control instructions for controlling the above-mentioned thermal management loop based on the above-mentioned operating mode and user driving needs, to effectively utilize the heat in the above-mentioned thermal management loop, thereby improving the energy efficiency of the thermal management system, prolonging the battery life and the overall cruising ability of the vehicle while ensuring passenger comfort.

[0049] For example, when the ambient temperature is extremely low, the above-mentioned user driving needs can be to improve the temperature of the passenger cabin, the above-mentioned operating mode can be a multi-heat source cooperative heating mode, and the control system can prioritize using the waste heat generated by the motor and electronic control to heat the battery, and then use the remaining heat for passenger cabin heating. At this time, the above-mentioned loop control instructions can include: activating the motor and electronic control waste heat recovery device, opening the valve to the three-medium heat exchanger, adjusting the opening of the electronic expansion valve to control the flow of refrigerant, and ensuring that enough heat can be transferred to the battery thermal management loop. At the same time, the control system can timely adjust the amount of refrigerant flowing to the in-vehicle heat exchanger according to the recovery of the battery temperature to maintain the comfortable temperature of the passenger cabin.

[0050] For another example, in a relatively mild low-temperature environment, the above-mentioned user driving needs can be to maintain the temperature of the passenger cabin, the above-mentioned operating mode can be a waste heat priority heating mode, and the control system can intelligently select to use the waste heat of the motor and electronic control system as a supplemental heat source for the heat pump system to reduce the dependence on the air source heat pump. At this time, the above-mentioned loop control instructions can include: monitoring the temperature of the motor coolant, when the temperature is higher than the ambient temperature, controlling the multi-way valve system to guide the coolant to flow through the motor and electronic control waste heat recovery device, thereby improving the energy efficiency ratio of the heat pump system.

[0051] Step S108, controlling the thermal management loop to operate based on the loop control instructions to control the thermal management system to operate.

[0052] In an optional embodiment, since the above-mentioned loop control instructions are constructed by comprehensively considering the user driving needs and the operating mode, the control system can further control the thermal management system to operate by using the above-mentioned loop control instructions to control the above-mentioned thermal management loop to operate, so that the thermal management system can not only be in a more suitable operating mode under different environmental conditions, ensuring the activity of the battery and the comfort of the passengers, but also realize the optimal allocation and utilization of energy, significantly improving the energy utilization efficiency of the vehicle and the driving experience.

[0053] In the embodiments of the present application, the user driving demand corresponding to the vehicle and the state parameters of at least one target device on the vehicle are acquired; the operation mode of the thermal management system on the vehicle is determined based on the user driving demand and the state parameters; the loop control instruction of at least one thermal management loop in the thermal management system is constructed based on the operation mode and the user driving demand; and the thermal management loop is controlled to operate based on the loop control instruction, so as to control the operation mode of the thermal management system. By collecting the instant demand of the user for the vehicle and the state parameters of the target device, a data basis is provided for the thermal management decision. Based on the above-mentioned user driving demand and state parameters, the operation mode of the thermal management system is determined, which can make the above-mentioned operation mode meet the user driving demand and conform to the actual state of the target device. Once the above-mentioned operation mode is determined, the control system will generate a fine loop control instruction according to the characteristics of the determined operation mode and in combination with the user driving demand. Based on the above-mentioned loop control instruction, the thermal management loop is controlled to operate, which can ensure that the entire thermal management system can strictly operate according to the determined operation mode, realize precise management of thermal energy, and achieve the purpose of improving the thermal management efficiency and energy utilization rate of the thermal management system under various working conditions, thereby solving the technical problem of low utilization rate of thermal energy of the thermal management system in the related art.

[0054] Further, based on the user driving demand and the state parameters, the operation mode of the thermal management system on the vehicle is determined, including: based on the user driving demand, determining a target thermodynamic state of the target device, wherein the target thermodynamic state is used to represent the thermodynamic state that the target device needs to reach; matching the state parameters with the target thermodynamic state to obtain a first matching result, wherein the first matching result is used to reflect the difference between the current thermodynamic state of the target device and the target thermodynamic state; and inputting the first matching result into a mode determination model to determine the operation mode by using the mode determination model.

[0055] The above-mentioned target thermodynamic state can refer to an ideal thermodynamic condition that the above-mentioned target device is expected to reach in the above-mentioned thermal management system according to the above-mentioned user driving demand or vehicle operating condition. For example, the above-mentioned target thermodynamic state can include at least one or more of the following: specific values or ranges of physical quantities such as temperature, pressure, entropy, etc., but is not limited thereto. For example, under low-temperature starting conditions, the target thermodynamic state of the battery pack can be to require the battery temperature to rise to a certain range to ensure the chemical reaction rate and energy output efficiency. And during high-speed driving, the target thermodynamic state of the engine can be to require to be kept in the high-efficiency heat operation interval to avoid overheating.

[0056] The above-mentioned first matching result can be a result obtained by comparing and analyzing the real-time monitored state parameters with the above-mentioned target thermodynamic state in the above-mentioned thermal management system. The above-mentioned first matching result can reflect the deviation degree between the current state of the above-mentioned target device and the required ideal state.

[0057] The mode determination model can be a model for intelligently selecting a suitable operation mode in the thermal management system according to different scenarios, state parameters, and target thermodynamic states. For example, the mode determination model can include a complex mathematical formula, a machine learning algorithm, or a pre-set logical rule, but is not limited thereto. The mode determination model can output a recommended operation mode by comprehensively considering the input parameters.

[0058] In an optional embodiment, the user driving demand can cover various situations, and each user driving demand has different thermodynamic state requirements for the target device. Therefore, the control system can determine the thermodynamic state that the target device needs to achieve based on the user driving demand, thereby obtaining the target thermodynamic state. The setting of the target thermodynamic state is the starting point of the operation of the thermal management system, which ensures that the operation of the thermal management system is closely related to the user demand and avoids unnecessary energy waste. Further, the matching of the state parameters and the target thermodynamic state is an important means to evaluate the difference between the current system state and the user demand. By matching the state parameters and the target thermodynamic state, the difference between the current thermodynamic state of the target device and the target thermodynamic state can be obtained, thereby constructing a first matching result. The construction of the first matching result helps the control system to quickly identify whether the current thermodynamic state of the target device has reached the target thermodynamic state and the size of the gap between the current thermodynamic state and the target thermodynamic state, which is the basis for determining the next control strategy. After obtaining the first matching result, the control system can input the first matching result into the mode determination model and determine the operation mode of the thermal management system by using the mode determination model. Through the above steps, the thermal management system can intelligently respond to the user demand and the vehicle state, realize efficient use of energy, prolong the endurance of the electric vehicle, and at the same time ensure the comfort and safety during driving.

[0059] For example, the user driving demand described above can be that the user starts the vehicle in the winter morning, plans to travel immediately, and the control system detects that both the external environment temperature and the battery temperature are low. At this time, the control system can determine the target thermodynamic state according to the user driving demand described above, that is, the battery temperature is raised to the target battery temperature A degrees, to ensure that the battery operates at a more suitable temperature to improve power output efficiency and safety, and at the same time, the control system can determine the target passenger compartment temperature as B to provide a comfortable driving environment. Then, the control system compares the current battery temperature, the passenger compartment temperature, and the target battery temperature, the target passenger compartment temperature to obtain the first matching result. The first matching result shows that both the battery and the passenger compartment need a large amount of heat, and the air source heat pump efficiency is poor, so the control system can further input the first matching result into the mode determination model. The mode determination model determines to use the multi-heat source cooperative heating mode after analyzing the first matching result.

[0060] Further, the mode determination model includes a priority determination module and a mode determination module; inputting the first matching result into the mode determination model, and determining the operation mode by using the mode determination model, including: determining the control priority of the target device by using the priority determination module based on the first matching result, wherein the control priority is used to reflect the demand degree of the target device for heat energy; determining the operation mode by using the mode determination module based on the control priority and the state parameter.

[0061] The priority determination module described above can be a module for analyzing and determining the importance of the demand for heat energy of each target device in the system. The priority determination module described above can calculate the control priority of each target device according to the state parameter and the preset strategy, to ensure that the control system can preferentially meet the temperature demand of the more critical target device. The determination of the priority can be based on the comprehensive consideration of the urgency and importance of the demand for heat energy.

[0062] The mode determination module described above can be a module for determining the specific operation mode of the thermal management system based on the control priority output by the priority determination module and the current system state parameter. The design purpose of the mode determination module is to select a more effective thermal management scheme according to the current condition, to improve the energy utilization efficiency, and at the same time, to meet the temperature control demand of the key components of the vehicle.

[0063] The control priority can be a parameter reflecting the urgency of the thermal energy demand of the target devices in the thermal management system at different times. The control priority of each target device can dynamically change under different environmental conditions and vehicle operating states. For example, at extremely low temperatures, the heating control priority of the battery can be higher than the heating demand of the passenger compartment, because maintaining the activity of the battery is more critical. The determination of the control priority directly affects the decision of the mode determination module, thereby guiding the control system to efficiently allocate and manage energy.

[0064] In an optional embodiment, considering that the demand for thermal energy of different components is dynamically changing when the vehicle is in operation, and the quality and quantity of available heat sources are also fluctuating. Through the first matching result, i.e., real-time analysis of the state parameters and the availability of each heat source, the control system can intelligently determine which thermal energy demand is more urgent and which heat source is more suitable to meet these demands. Therefore, based on the first matching result, the control system can determine the degree of demand for thermal energy of different target devices using the priority determination module, thereby constructing the control priority of the target devices. The setting of the control priority ensures that the control system can first meet the target devices with higher degree of demand for thermal energy. Subsequently, the control system can determine the operating mode based on the control priority and the state parameters using the mode determination module, so that the operating mode can preferentially meet the thermal energy demand of the target devices with higher control priority, preventing potential risks caused by improper energy allocation.

[0065] For example, the priority determination module can pre-set a set of weight systems to determine the weight of the thermal energy demand of different target devices. The weight system can be adaptively adjusted according to the change of the season or the external environment. In application, the control system can calculate the control priority of each target device by weighted average, and input the control priority and the state parameters to the mode determination module to select the corresponding operating mode using the mode determination module, so that the current operating mode can preferentially meet the thermal energy demand of the target devices with higher control priority, and after the target devices with higher control priority obtain sufficient thermal energy, the operating mode can sequentially meet the operating demand of other target devices.

[0066] For another example, the priority determination module can define a fuzzy set, and map the first matching result to the fuzzy set to determine the control priority of each target device using fuzzy logic rules. Subsequently, the mode determination module can match the control priority and the state parameters with the pre-set operating modes to select an operating mode that better meets the overall state of the current thermal management system.

[0067] Further, based on the operation mode and the user driving demand, a loop control instruction of at least one heat management loop in the heat management system is constructed, including: determining a first device and a second device from the target device based on the operation mode and the user driving demand, wherein the first device is a device for processing heat energy generated by any one target device through the heat management loop, and the second device is a device capable of receiving or dissipating heat energy through the heat management loop; analyzing the user driving demand to obtain a first control demand of the first device and a second control demand of the second device; and constructing the loop control instruction based on the first control demand and the second control demand.

[0068] The first device can be a device capable of actively controlling heat transfer in the heat management system. For example, the first device can include at least one or more of a compressor of a heat pump system, an electronic expansion valve, a four-way reversing valve, a three-medium heat exchanger, or a motor electric control waste heat recovery device, but is not limited thereto. The first device can directly affect the absorption, compression, distribution, and release of heat energy by changing the working state or parameters (such as speed, opening degree, direction, etc.), thereby processing the heat of the target device.

[0069] The second device can be a device capable of receiving or dissipating heat energy in the heat management system, and the second device can be a terminal or a starting point of heat transfer. For example, the second device can include at least one or more of a battery pack, an air conditioning box of a passenger cabin, a motor radiator, etc., but is not limited thereto. The second device does not actively control heat, but its state (such as temperature, flow rate, etc.) will change according to the control of the first device, thereby affecting the efficiency and effect of the entire heat management system.

[0070] The first control demand can be a control demand for the first device, i.e., a requirement for devices that actively control heat transfer. For example, the first control demand can include at least one or more of starting or stopping the device, adjusting the working parameters of the device, switching the working mode of the device, etc., but is not limited thereto. The first control demand can be determined based on the operation mode of the heat management system and the user driving demand, aiming to improve the heat energy utilization efficiency and thereby improve the operation efficiency of the heat management system.

[0071] The second control demand can be a control demand for the second device, i.e., a requirement for devices that receive or dissipate heat energy. For example, the second control demand can include at least one or more of controlling the flow of the cooling liquid, adjusting the rate of heat energy reception or dissipation, etc., but is not limited thereto. The second control demand can also be determined based on the operation mode of the heat management system and the user driving demand, but the second control demand can focus more on achieving accurate distribution or discharge of heat to meet the temperature control requirements of different components.

[0072] In an alternative embodiment, considering that the first device is responsible for directly handling the thermal energy generated by the target device, by determining the first device, the control system can accurately control the conversion and utilization of thermal energy according to the current operating mode and the specific needs of the user, avoiding energy waste or excessive consumption. While the second device is both the source and the destination of thermal energy, identifying the second device helps the control system understand which components need to be cooled and which components need to be heated, or how to coordinate the distribution and exchange of thermal energy between these devices in different modes. Therefore, the control system can first determine the first device for handling the thermal energy generated by any target device through the thermal management circuit and the second device capable of receiving or dissipating thermal energy through the thermal management circuit based on the operating mode and the user driving needs. After determining the first device and the second device, in order to clarify the control requirements of the first device and the second device and achieve accurate control of the thermal management system, the control system can analyze the user driving needs to obtain the first control requirements of the first device and the second control requirements of the second device. Subsequently, the control system can generate accurate circuit control instructions based on the first control requirements and the second control requirements, such as adjusting the position of the electromagnetic valve, changing the circulation path of the cooling liquid, or controlling the working efficiency of the heat exchanger, which can ensure that the energy in the thermal management system is effectively transmitted and converted between circuits. Through the above steps, the control system can intelligently analyze the current state of the vehicle, the user's preferences, and the environmental conditions, and then accurately control the working state of the first device and the second device to effectively manage and distribute thermal energy.

[0073] For example, in extremely cold environments, the first device can be a motor and electric control waste heat recovery device, as it can use the waste heat of the motor and electric control system as a heat source, and the second device can be a battery pack and an in-vehicle heat exchanger, which are used to store and release heat to the passenger compartment, respectively. The control system can analyze that the heating demand is high according to the user-set passenger compartment temperature target and the preheating requirement of the battery pack. Based on this, the control system can determine that the first control requirement of the first device is to activate the motor and electric control waste heat recovery device, increase the flow of the motor water pump, and increase the temperature of the motor cooling liquid to enable the cooling liquid to fully exchange heat with the refrigerant in the motor and electric control waste heat recovery device. The control system can determine that the second control requirement of the second device is to control the four-way valve in the refrigerant circuit to be in the heating mode, and adjust the opening of the electronic expansion valve to ensure that the refrigerant is distributed between the three-medium heat exchanger and the in-vehicle heat exchanger in an optimal ratio, first meeting the heating requirement of the battery pack, and then providing heat to the passenger compartment. Subsequently, the control system can integrate the first control requirement and the second control requirement to construct the circuit control instructions.

[0074] For example, when the defrosting is about to be performed, the first device can be a battery pack for storing heat, and the second device can be an external heat exchanger requiring defrosting. By analyzing the user driving demand, the control system can determine that the user expects the temperature in the vehicle cabin to remain stable during defrosting and avoid cold wind impact. Based on this, the control system can determine the first control requirement as follows: activate the heat storage function of the battery pack in advance before the defrosting starts, and direct part of the high-temperature refrigerant to the inside of the battery pack through the battery water pump, and use the battery pack as a heat storage pool. The control system can determine the second control requirement as follows: when the defrosting signal is triggered, immediately switch the four-way reversing valve to the defrosting mode, and control the cooling liquid of the battery pack to release the heat stored in the battery pack through the in-vehicle heat exchanger to continuously heat the passenger cabin until the defrosting is completed. Similarly, the control system can integrate the first control requirement and the second control requirement to generate the loop control instruction.

[0075] Further, based on the operating mode and the user driving demand, the first device and the second device are determined from the target device, including: based on the operating mode, evaluating the target device to obtain a device evaluation result, wherein the device evaluation result is used to represent the ability of the target device to process heat; based on the device evaluation result, selecting the first device from the target device; based on the user driving demand, evaluating the importance of the target device to obtain an importance evaluation result, wherein the importance evaluation result is used to represent the importance of the target device in meeting the user driving demand; and based on the importance evaluation result, selecting the second device from the target device.

[0076] The device evaluation result can be a quantitative evaluation result of the ability of the target device to process heat in different operating modes. For example, the evaluation can be based on factors such as the thermal efficiency, heat conversion ability, performance parameters under current environmental conditions, etc. of the target device, but is not limited thereto. For example, for a heat exchanger in a heat pump system, the device evaluation result can include the heat exchange efficiency of the heat exchanger at different temperatures, the heating or cooling ability of the heat exchanger in different operating modes, etc. but is not limited thereto. The device evaluation result helps the control system to intelligently select a more suitable target device for heat processing in different operating modes, and ensures that the operating efficiency of the thermal management system is maintained at a high level.

[0077] The importance evaluation result can be an evaluation result of the importance of the target device to meeting the user driving demand. For example, the evaluation can mainly consider the role of the target device in ensuring driving safety, improving driving experience, saving energy, and the like, but is not limited thereto. For example, in a low-temperature winter environment, the importance evaluation result of the battery thermal management system can be high because it is directly related to the battery performance and vehicle endurance. In a hot summer, the importance evaluation result of the passenger cabin air conditioning system can be higher because it directly affects the comfort of the driver and passengers. The importance evaluation result helps the control system to prioritize the operation of key devices under different conditions to better meet the user demand.

[0078] In an optional embodiment, considering that in a multi-heat-source coupling system, different operating modes have different requirements for heat energy and processing capabilities, the control system needs to determine the capabilities of different target devices for processing heat, so as to help the control system to select a first device that can better meet the user driving demand under the current operating mode. Specifically, the control system can evaluate the target devices based on the operating mode to determine the capabilities of the target devices for processing heat, thereby constructing the device evaluation result. After obtaining the device evaluation result, the control system can select the first device based on the device evaluation result. This decision-making process ensures that the first device can be a high-quality and suitable heat energy supply point, thereby achieving efficient transfer and utilization of energy. Similarly, the control system can also evaluate the importance of the target devices based on the user driving demand to determine the importance of the target devices in meeting the user driving demand, thereby constructing the importance evaluation result. The importance evaluation result ensures that under the premise of meeting the user demand, the control system can prioritize the processing of target devices that have a greater impact on the user driving experience. Subsequently, the control system can select the second device from the target devices based on the importance evaluation result. By identifying and prioritizing the processing of the second device, the control system can provide immediate and effective responses on the performance points that the user cares about (such as battery endurance and passenger comfort), thereby further improving the user experience.

[0079] For example, in the high-speed cruising state, the control system can evaluate the target device based on the above-mentioned operating mode, determine that the battery and the motor will generate more waste heat, so that the motor electric control cooling circuit shows higher thermal management efficiency, and therefore the control system can select the motor electric control cooling circuit as the first device. Further, the user driving demand can be to ensure comfort during long-distance driving. After evaluating the target device according to the user driving demand, the control system can determine that the passenger compartment heating circuit is crucial to providing a comfortable driving environment for the passenger compartment, and therefore the control system can determine the passenger compartment heating circuit as the second device.

[0080] Further, based on the operating mode, the target device is evaluated to obtain a device evaluation result, including: in response to the operating mode being a multi-heat-source heating mode, evaluating the quality of the thermal energy generated by the target device to obtain a quality evaluation result; wherein the multi-heat-source heating mode is used to represent a mode in which the thermal energy generated by the first device is used to heat the second device when the ambient temperature of the environment in which the vehicle is located is less than a first preset temperature, and the quality evaluation result is used to represent the conversion efficiency between the thermal energy generated by the target device and other energy during driving. The quality evaluation result belongs to the device evaluation result.

[0081] The multi-heat-source heating mode can be an operating mode started when the vehicle is in an extremely low-temperature environment. The multi-heat-source heating mode is characterized by comprehensive utilization of multiple heat sources (such as waste heat generated by the motor, the electric control system, the battery, etc.) inside the vehicle to improve the heating performance of the heat pump system. The operating goal of the multi-heat-source heating mode is to ensure efficient recovery and utilization of heat through intelligent control, to preferentially meet the demand for temperature increase of the battery, and then to use the waste heat to heat the passenger compartment to reduce additional power consumption and extend the cruising range of the vehicle in low-temperature conditions.

[0082] The quality evaluation result can be a key indicator of the conversion efficiency of the target device. Specifically, the quality evaluation result reflects the conversion efficiency between the thermal energy generated by the target device and other energy in the thermal management system, i.e., the quality and efficiency of the thermal energy output by the target device per unit energy input. The higher the quality evaluation result, the better the conversion and utilization efficiency of thermal energy, which is of great significance to improving energy utilization efficiency and reducing energy consumption.

[0083] The first preset temperature can be an ambient temperature threshold for determining whether the multi-heat source heating mode needs to be started. When the ambient temperature is lower than the first preset temperature, the control system can identify that the current environment is a low-temperature environment to trigger the start of the multi-heat source heating mode. The first preset temperature is set at a lower temperature point to ensure that when the ambient temperature of the vehicle is too low and the heating efficiency of the air source heat pump is reduced, the waste heat recovery and multi-heat source collaborative heating can be timely enabled to ensure the normal temperature requirement of the battery and the passenger cabin, and the efficiency of energy utilization is improved.

[0084] In an optional embodiment, when the ambient temperature of the environment where the vehicle is located is less than the first preset temperature, the control system needs to use the heat energy generated by the first device to heat the second device. At this time, the operation mode is the multi-heat source heating mode. In the multi-heat source heating mode, the control system can use the heat energy generated by the first device to heat the second device, thereby reducing the dependence on the heater or other high-energy-consumption heating devices. The control system needs to determine the degree of effective utilization of the waste heat generated by the first device and the efficiency of converting the waste heat into usable heat energy, which helps the control system to select the first device with high conversion efficiency between the heat energy generated and other energy for driving among different target devices to improve the operation efficiency of the thermal management system. Therefore, when the operation mode is the multi-heat source heating mode, the control system can evaluate the quality of the heat energy generated by the target device to determine the conversion efficiency between the heat energy generated by the target device and other energy for driving, obtain the quality evaluation result, and use the quality evaluation result as the device evaluation result.

[0085] For example, in the multi-heat source heating mode, the control system can first measure the coolant temperature of the target device and the ambient humidity. Subsequently, the control system can use a preset temperature-humidity curve to calculate the conversion efficiency of the heat energy generated by different target devices to obtain the device evaluation result.

[0086] For another example, in the multi-heat source heating mode, the control system can collect the real-time temperature of the coolant of the target device and obtain the external humidity through an environmental sensor, and input the two parameters into a pre-constructed conversion efficiency model. The model can consider the influence of temperature and humidity on heat energy conversion to output the conversion efficiency value of the heat energy, i.e., the quality evaluation result.

[0087] Further, based on the operation mode, the target device is evaluated to obtain a device evaluation result, including: in response to the operation mode being a heat storage and defrosting mode, a heat capacity of the target device is evaluated to obtain a heat capacity evaluation result; wherein the heat storage and defrosting mode is used to represent a mode in which heat energy generated by the first device is stored when the vehicle is in a preset scene, and the stored heat energy is used to defrost the second device, the preset scene is used to represent that the second device needs to be defrosted, and the heat capacity evaluation result is used to represent the efficiency of the target device in storing generated heat, and the heat capacity evaluation result belongs to the device evaluation result.

[0088] The heat storage and defrosting mode described above can be an operation mode of the vehicle in a low-temperature environment. In the heat storage and defrosting mode described above, the control system can store heat in advance in devices that do not need to be used immediately, which is called heat storage. When the surface of the key heat exchange device (such as the second device described above) is frosted, resulting in a decrease in the efficiency of the heat pump system, the control system can switch to the defrosting mode to melt the frost layer using the heat stored in the target device in advance, and restore the normal working state of the heat exchange device, while avoiding the negative impact of directly using refrigerant defrosting on the temperature in the passenger compartment.

[0089] The heat capacity evaluation result described above can refer to a quantitative evaluation of the ability of the target device to store and release heat. The heat capacity evaluation result can represent how much heat the target device can absorb or release under different temperature changes. In the heat storage and defrosting mode, the heat capacity evaluation result is directly related to the efficiency of the target device as a heat energy storage device, that is, how much heat can be effectively stored in a certain period of time, and whether this heat is sufficient for the subsequent defrosting process. A higher heat capacity evaluation result means that the performance of the target device as a heat energy storage device is excellent, and it can quickly and efficiently store and release heat.

[0090] The preset scene described above can refer to environmental conditions or vehicle operating states that are pre-set when designing and evaluating the thermal management system. In the heat storage and defrosting mode, the preset scene can involve low-temperature environments, the temperature state of the battery pack when the vehicle is stationary or traveling at low speed, and the conditions under which the external heat exchanger begins to frost. When the control system detects that these preset conditions are met, that is, the second device needs to be defrosted, the control system switches the operation mode of the thermal management system to the heat storage and defrosting mode, and uses the heat energy of the first device for defrosting to maintain the operation efficiency of the entire thermal management system and the comfort of the passengers.

[0091] In an optional embodiment, when the vehicle is in a preset scenario, the control system needs to store the heat energy generated by the first device and use the stored heat energy to defrost the second device. At this time, the above operation mode is the above heat storage and defrosting mode. Considering that in the heat storage and defrosting mode, the control system needs to store heat energy in the target device before defrosting starts for subsequent defrosting. Therefore, evaluating the heat capacity of the target device can ensure that the target device can effectively store enough heat when needed, thereby improving the heat storage effect. Based on this, when the above operation mode is the heat storage and defrosting mode, the control system can evaluate the heat capacity of the target device to determine the efficiency of the target device in storing generated heat, thereby constructing the above heat capacity evaluation result, and the above heat capacity evaluation result can be used as the above device evaluation result.

[0092] For example, the control system can collect temperature data through multiple temperature sensors installed around the target device. The temperature sensors can monitor the temperature change of the target device in real time. When the control system detects that the second device needs to be defrosted, a part of high-temperature refrigerant can be directed to the target device to start the heat storage process. Subsequently, the control system can use the temperature difference before and after heat storage, combined with the physical properties of the target device, to evaluate the heat capacity of the target device through a preset heat capacity calculation formula, thereby obtaining the above heat capacity evaluation result.

[0093] For another example, the control system can record operation parameters in multiple heat storage and defrosting processes, and use these parameters to train a machine learning model. The model can be a neural network, a decision tree or other prediction model to predict the heat capacity efficiency under different operation parameters. When the thermal management system enters the heat storage and defrosting mode again, the control system can input the current operation parameters into the trained model in real time, and use the model to obtain the above heat capacity evaluation result.

[0094] Further, based on the operation mode, the target device is evaluated to obtain a device evaluation result, including: in response to the operation mode being a waste heat heating mode, evaluating a total amount of heat energy generated by the target device to obtain a first evaluation result; wherein the waste heat heating mode is used to represent a mode in which the first device generates heat energy greater than a preset threshold, and the first device generates heat energy for the second device. The first evaluation result is used to represent the efficiency of the target device in generating heat within a preset time period, and the first evaluation result belongs to the device evaluation result.

[0095] The above waste heat heating mode can be an operation mode enabled when the heat energy generated by the above first device during operation exceeds the above preset threshold. In the above waste heat heating mode, the thermal management system automatically uses the excess heat energy of the first device to heat the second device to improve energy utilization and device operation efficiency.

[0096] The first evaluation result can be a quantitative evaluation of the total amount of heat energy generated by the target device in the waste heat heating mode within a preset time period. The first evaluation result can include the efficiency of the target device in generating heat, which helps to evaluate the efficiency of energy recovery and utilization in the current operating mode and the contribution to the overall performance of the thermal management system.

[0097] The preset threshold value can refer to the value that the heat energy generated by the first device needs to exceed to trigger the thermal management system to enter the waste heat heating mode. The preset threshold value can be set based on system design, energy management, and thermodynamic efficiency considerations, ensuring that the waste heat heating mode is activated only when the heat energy generated by the first device is sufficient and can be effectively utilized.

[0098] The preset time period can be a time reference for evaluating the efficiency of heat energy generation. The first evaluation result is obtained within the preset time period to compare the performance of the target device under different operating modes or different environmental conditions. The selection of the preset time period should meet the actual application requirements, for example, the preset time period can be several minutes, several hours, or longer, depending on the characteristics of the thermal management system and the evaluation purpose.

[0099] In an optional embodiment, when the heat energy generated by the first device is greater than the preset threshold value, the control system needs to use the heat energy generated by the first device to heat the second device, at which time the operating mode is the waste heat heating mode. Considering that in the waste heat heating mode, the control system aims to utilize the waste heat generated by the first device to heat the second device. Evaluating the heat generation performance of the target device can ensure that the thermal management system operates as expected. Based on this, when the operating mode is the waste heat heating mode, the control system can evaluate the total amount of heat energy generated by the target device to determine the efficiency of the target device in generating heat within a preset time period, thereby constructing the first evaluation result, and the first evaluation result can be used as the device evaluation result.

[0100] For example, the control system can install high-precision temperature sensors in critical areas of the target device, such as near the motor winding and the electronic control chip, to monitor the operating temperature of the target device in real time. Subsequently, the control system can calculate the total amount of heat energy generated by the first device in real time based on the data collected by the temperature sensors and the pre-calibrated temperature-heat conversion coefficient. Then, the control system can obtain the first evaluation result by calculating the ratio of the total amount of heat energy generated by the first device to the preset threshold value.

[0101] For example, the control system can record the energy consumption of the first device in a preset time period. Meanwhile, the control system can measure the heat transferred by the target device to the thermal management system through the heat flow meter. Subsequently, the control system can calculate the efficiency of the target device in generating heat in the preset time period by using the ratio of the energy consumption data of the first device and the heat generation data, thereby obtaining the first evaluation result.

[0102] Further, based on the operating mode, the target device is evaluated to obtain a device evaluation result, including: in response to the operating mode being a reinforced refrigeration mode, the total amount of heat dissipated by the target device is evaluated to obtain a second evaluation result; wherein the reinforced refrigeration mode is used to represent a mode of dissipating heat energy generated by the second device using the first device in the case that the ambient temperature of the environment where the vehicle is located is greater than a second preset temperature, the second preset temperature is greater than the first preset temperature, and the second evaluation result is used to represent the efficiency of the target device in dissipating heat in a preset time period, and the second evaluation result belongs to the device evaluation result.

[0103] The reinforced refrigeration mode can be an operating mode automatically activated by the thermal management system when the ambient temperature of the vehicle exceeds the second preset temperature. In the reinforced refrigeration mode, the control system prioritizes ensuring the cooling effect of the key components of the vehicle (such as the drive motor and the electronic control system) to maintain the normal working performance of these components in a high-temperature environment. For example, in the reinforced refrigeration mode, the control system can take measures such as increasing the circulation speed of the cooling liquid, adjusting the valve opening degree, or using additional heat dissipation devices to strengthen the dissipation of heat energy, thereby improving the refrigeration efficiency of the air conditioning system and the cooling speed of the passenger compartment.

[0104] The second evaluation result can be a quantitative indicator of the heat dissipation performance of the target device in the reinforced refrigeration mode. The second evaluation result can be used to evaluate the ability of the target device to transfer a certain proportion or amount of heat from the key components of the vehicle to the environment in a preset time period, which is a key parameter for measuring the efficiency of the thermal management system under high-temperature working conditions. The second evaluation result can be obtained through experimental testing, for example, the second evaluation result can include at least one or more of the following data: heat flow rate, heat exchange efficiency, heat sink surface temperature change rate, etc., but is not limited thereto, to ensure that the heat dissipation effect of the target device in this mode meets the vehicle operation requirements.

[0105] The second preset temperature can be a temperature threshold for triggering the enhanced refrigeration mode. When the temperature of the environment in which the vehicle is located reaches or exceeds the second preset temperature, the thermal management system can automatically identify and enter the enhanced refrigeration mode to cope with the challenge of high temperature environment to the performance of the vehicle cooling system. The specific value of the second preset temperature can be determined comprehensively according to the design requirements of the vehicle, the working temperature limit of the key components, and the heat exchange capacity of the cooling system, etc., to ensure that the vehicle can still maintain a safe and stable operating state under adverse environmental conditions.

[0106] In an optional embodiment, when the ambient temperature of the environment in which the vehicle is located is greater than the second preset temperature (the second preset temperature is greater than the first preset temperature), the control system needs to dissipate the heat energy generated by the second device using the first device. At this time, the operating mode is the enhanced refrigeration mode. Considering that in the enhanced refrigeration mode, due to the high ambient temperature, the heat dissipation demand of the target device increases, therefore, it is important to evaluate the total amount of heat dissipated by the target device, which enables the control system to adjust the refrigeration intensity according to the actual heat generation condition, thereby ensuring that the target device will not overheat and affect the performance or service life, while avoiding energy waste. Based on this, when the operating mode is the enhanced refrigeration mode, the total amount of heat dissipated by the target device is evaluated to determine the efficiency of heat dissipation of the target device within a preset time period, thereby constructing the second evaluation result, and the second evaluation result can be used as the device evaluation result.

[0107] For example, the control system can deploy multiple temperature sensors on the surface and internal key positions of the motor electronic control system or the battery system to ensure comprehensive coverage. The temperature sensors can record temperature data within a preset time period, and the control system can use time series analysis method to analyze the temperature change trend of the target device over time based on the sensor data, thereby calculating the temperature rise slope. Subsequently, the control system can estimate the total amount of heat dissipated by the target device within a preset time period according to the heat capacity coefficient of the target device and the temperature rise slope, thereby obtaining the second evaluation result.

[0108] For ease of understanding, Figure 2 is a schematic diagram of an optional thermal management system operating mode selection process according to an embodiment of the present application, as Figure 2 shown, after the system is started, sensor data is received and transmitted to the intelligent control unit, and then the intelligent control unit makes a mode decision. The decision result is divided into four operating modes, which are the extremely cold multi-heat source cooperative heating mode, the intelligent heat storage and lossless defrosting mode, the waste heat priority heating mode and the enhanced refrigeration mode. After completing the mode decision, the thermal management system executes the corresponding mode process.

[0109] Figure 3is a working flow chart of an optional extreme cold multi-heat source collaborative heating mode according to an embodiment of the present application, as shown in Figure 3 After the mode is started, if the ambient temperature is less than or equal to a first preset temperature and the battery temperature is low, the control system controls the motor three-way valve to switch to the waste heat recovery path. Then the control system controls the battery three-way valve to switch to the battery heating path. Then, the control system sets the four-way valve to the heating state. Next, the refrigerant preferentially absorbs motor waste heat, is compressed, limits battery heating, and then passenger cabin heating. If the ambient temperature is greater than the first preset temperature or the battery temperature is high, the current mode is maintained. Finally, the mode ends or switches.

[0110] Figure 4 is a working flow chart of an optional intelligent heat accumulation and loss-free defrosting mode according to an embodiment of the present application, as shown in Figure 4 After the mode is started, if the frost on the vehicle exterior heat exchanger reaches a threshold value, three-stage control of the thermal management system is performed. In the first stage, heat accumulation, the control system adjusts the valves to direct part of the high-temperature refrigerant to the battery pack for battery pack heating and energy accumulation. In the second stage, defrosting, the control system switches the four-way valve to the defrosting state, and the high-temperature refrigerant flows to the vehicle exterior heat exchanger for defrosting. In the third stage, heating, the control system starts the battery water pump to continuously heat the passenger cabin through the vehicle interior heat exchanger using the energy stored in the battery. If the frost on the vehicle exterior heat exchanger does not reach the threshold value, the normal heating mode is returned. Finally, the mode ends or switches.

[0111] Figure 5 is a working flow chart of an optional waste heat priority heating mode according to an embodiment of the present application, as shown in Figure 5 After the mode is started, if the ambient temperature is greater than a first preset temperature and the motor cooling temperature is greater than the ambient temperature, the control system controls the motor three-way valve to switch to the waste heat recovery path. Then, the control system sets the four-way valve to the heating state. Then, the control system determines that the refrigerant preferentially absorbs heat in the motor electric control waste heat recovery device. If the ambient temperature is less than or equal to the first preset temperature, or the motor cooling temperature is less than or equal to the ambient temperature, switch to other modes, such as a pure air source heat pump mode. Finally, the mode ends or switches.

[0112] Figure 6 is a working flow chart of an optional enhanced refrigeration mode according to an embodiment of the present application, as shown in Figure 6As shown, after the mode is started, if the ambient temperature is greater than the second preset temperature and maximum cooling is requested, the control system controls the motor three-way valve to switch to the full-power heat dissipation path. Subsequently, the control system sets the four-way valve to the refrigeration state. Then, the control system turns on the electronic expansion valve. Next, the control system determines that the refrigerant is in a normal refrigeration cycle, and the motor radiator is working at full power, thereby reducing the cabin ambient temperature. If the ambient temperature is less than or equal to the second preset temperature, or maximum cooling is not requested, the standard refrigeration mode is maintained. Finally, the mode ends or switches.

[0113] According to an embodiment of the present application, an embodiment of a control device of a thermal management system is provided. It should be noted that the device can be used to execute the above-mentioned control method of the thermal management system. The specific implementation and application scenarios are the same as those of the above-mentioned embodiment, and will not be repeated here. Figure 7 is a schematic diagram of a control device of a thermal management system according to an embodiment of the present application, as shown, the device comprises: Figure 7

[0114] The first acquisition module 702 is configured to acquire a user driving demand corresponding to a vehicle and a state parameter of at least one target device on the vehicle, wherein the target device is configured to perform a driving action corresponding to the user driving demand, and the state parameter is configured to reflect a current thermodynamic state of the target device.

[0115] The first determination module 704 is configured to determine an operation mode of a thermal management system on the vehicle based on the user driving demand and the state parameter, wherein the thermal management system is configured to adjust the thermodynamic state of the target device.

[0116] The first construction module 706 is configured to construct a loop control instruction of at least one thermal management loop in the thermal management system based on the operation mode and the user driving demand.

[0117] The first control module 708 is configured to control the thermal management loop to operate based on the loop control instruction, so as to control the thermal management system to operate.

[0118] Further, the first determination module is further configured to: determine a target thermodynamic state of the target device based on the user driving demand, wherein the target thermodynamic state is configured to represent a thermodynamic state that the target device needs to reach; match the state parameter with the target thermodynamic state to obtain a first matching result, wherein the first matching result is configured to reflect a difference between the current thermodynamic state of the target device and the target thermodynamic state; and input the first matching result into a mode determination model, and determine the operation mode by using the mode determination model.

[0119] ​Further, the mode determination model comprises: a priority determination module and a mode determination module; the first determination module is further configured to: determine, by using the priority determination module, a control priority of the target device based on the first matching result, wherein the control priority is used to reflect a degree of demand of the target device for thermal energy; and determine, by using the mode determination module, the operation mode based on the control priority and the state parameter.

[0120] Further, the first construction module is further configured to: determine, based on the operation mode and the user driving demand, the first device and the second device from the target device, wherein the first device is used to process thermal energy generated by any one of the target devices through the thermal management loop, and the second device is used to represent a device capable of receiving or dissipating thermal energy through the thermal management loop; analyze the user driving demand to obtain a first control demand of the first device and a second control demand of the second device; and construct the loop control instruction based on the first control demand and the second control demand.

[0121] Further, the first construction module is further configured to: evaluate, based on the operation mode, the target device to obtain a device evaluation result, wherein the device evaluation result is used to represent a processing capability of the target device for heat; select the first device from the target device based on the device evaluation result; evaluate, based on the user driving demand, an importance of the target device to obtain an importance evaluation result, wherein the importance evaluation result is used to represent an importance degree of the target device in meeting the user driving demand; and select the second device from the target device based on the importance evaluation result.

[0122] Further, the first construction module is further configured to: in response to the operation mode being a multi-thermal-source heating mode, evaluate a quality of the thermal energy generated by the target device to obtain a quality evaluation result; wherein the multi-thermal-source heating mode is used to represent a mode of using the thermal energy generated by the first device to heat the second device in a case where an ambient temperature of an environment in which the vehicle is located is less than a first preset temperature, and the quality evaluation result is used to represent a conversion efficiency between the thermal energy generated by the target device and other driving energy, and the quality evaluation result belongs to the device evaluation result.

[0123] Further, the first construction module is further configured to: in response to the operation mode being a heat storage and defrosting mode, evaluate a heat capacity of the target device to obtain a heat capacity evaluation result; wherein the heat storage and defrosting mode is used to represent a mode of storing the thermal energy generated by the first device and using the stored thermal energy to defrost the second device in a preset scenario, the preset scenario is used to represent that the second device needs to be defrosted, and the heat capacity evaluation result is used to represent an efficiency of the target device in storing generated heat, and the heat capacity evaluation result belongs to the device evaluation result.

[0124] Further, the first constructing module is further configured to: in response to the operation mode being a waste heat heating mode, evaluate a total amount of heat energy generated by the target device to obtain a first evaluation result; wherein the waste heat heating mode is used to represent a mode in which the first device generates heat energy for heating the second device when the heat energy generated by the first device is greater than a preset threshold, and the first evaluation result is used to represent an efficiency of the target device in generating heat within a preset time period, and the first evaluation result belongs to the device evaluation result.

[0125] Further, the first constructing module is further configured to: in response to the operation mode being a waste heat heating mode, evaluate a total amount of heat energy generated by the target device to obtain a first evaluation result; wherein the waste heat heating mode is used to represent a mode in which the first device generates heat energy for heating the second device when the heat energy generated by the first device is greater than a preset threshold, and the first evaluation result is used to represent an efficiency of the target device in generating heat within a preset time period, and the first evaluation result belongs to the device evaluation result.

[0126] Embodiments of the present application also provide a vehicle, comprising: a memory storing an executable program; and a processor configured to execute the program, wherein the program is configured to execute the method in any of the embodiments of the present application.

[0127] Embodiments of the present application also provide a computer readable storage medium, comprising a stored executable program, wherein the executable program is configured to control a device in which the computer readable storage medium is located to execute the method in any of the embodiments of the present application when the executable program is executed.

[0128] Embodiments of the present application also provide a computer program product, comprising a computer program, wherein the computer program is configured to implement the method in any of the embodiments of the present application when executed by a processor.

[0129] Embodiments of the present application also provide a computer program product, comprising a non-volatile computer readable storage medium configured to store a computer program, wherein the computer program is configured to implement the method in any of the embodiments of the present application when executed by a processor.

[0130] Embodiments of the present application also provide a computer program, wherein the computer program is configured to implement the method in any of the embodiments of the present application when executed by a processor.

[0131] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0132] In several embodiments provided in the present application, it should be understood that the disclosed technology can be implemented by other means. Among them, the above-mentioned device embodiments are only schematic, for example, the division of the units can be a logical function division, and actual implementation can have another division mode, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be through some interface, indirect coupling or communication connection between units or modules, which can be electrical or other forms.

[0133] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed to multiple units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0134] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically, or two or more units can be integrated into one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0135] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0136] The above is only the preferred embodiment of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A control method of a thermal management system, characterized by, The method comprises: obtaining a user driving demand corresponding to a vehicle and a state parameter of at least one target device on the vehicle, wherein the target device is used to perform a driving action corresponding to the user driving demand, and the state parameter is used to reflect a current thermodynamic state of the target device; determining an operation mode of a thermal management system on the vehicle based on the user driving demand and the state parameter, wherein the thermal management system is used to adjust the thermodynamic state of the target device; constructing a loop control instruction of at least one thermal management loop in the thermal management system based on the operation mode and the user driving demand; controlling the thermal management loop to operate based on the loop control instruction, so as to control the thermal management system to operate.

2. The method of claim 1, wherein, The method comprises: determining a target thermodynamic state of the target device based on the user driving demand, wherein the target thermodynamic state is used to represent a thermodynamic state that the target device needs to reach; matching the state parameter with the target thermodynamic state to obtain a first matching result, wherein the first matching result is used to reflect a difference degree between the current thermodynamic state of the target device and the target thermodynamic state; inputting the first matching result into a mode determination model, and determining the operation mode by using the mode determination model.

3. The method of claim 2, wherein, The mode determination model comprises a priority determination module and a mode determination module, and the method comprises: determining a control priority of the target device by using the priority determination module based on the first matching result, wherein the control priority is used to reflect a demand degree of the target device for thermal energy; determining the operation mode by using the mode determination module based on the control priority and the state parameter.

4. The method of claim 1, wherein, The method comprises: determining a first device and a second device from the target device based on the operation mode and the user driving demand, wherein the first device is used to process thermal energy generated by any one target device through the thermal management loop, and the second device is used to represent a device capable of receiving or dissipating thermal energy through the thermal management loop; analyzing the user driving demand to obtain a first control demand of the first device and a second control demand of the second device; constructing the loop control instruction based on the first control demand and the second control demand.

5. The method of claim 4, wherein, The method comprises: evaluating the target device based on the operation mode to obtain a device evaluation result, wherein the device evaluation result is used to represent an ability of the target device to process heat; selecting the first device from the target device based on the device evaluation result. based on the user driving demand, the importance of the target device is evaluated, and an importance evaluation result is obtained, wherein the importance evaluation result is used to represent the importance of the target device in the process of meeting the user driving demand; based on the importance evaluation result, the second device is selected from the target device.

6. The method of claim 5, wherein, based on the running mode, the target device is evaluated, and a device evaluation result is obtained, including: in response to the running mode being a multi-heat source heating mode, the quality of the heat energy generated by the target device is evaluated, and a quality evaluation result is obtained; wherein the multi-heat source heating mode is used to represent a mode in which the heat energy generated by the first device is used to heat the second device when the ambient temperature of the environment in which the vehicle is located is less than a first preset temperature, the quality evaluation result is used to represent the conversion efficiency between the heat energy generated by the target device and other driving energy, and the quality evaluation result belongs to the device evaluation result.

7. The method of claim 5, wherein, based on the running mode, the target device is evaluated, and a device evaluation result is obtained, including: in response to the running mode being a heat storage and defrosting mode, the heat capacity of the target device is evaluated, and a heat capacity evaluation result is obtained; wherein the heat storage and defrosting mode is used to represent a mode in which the heat energy generated by the first device is stored, and the stored heat energy is used to defrost the second device when the vehicle is in a preset scenario, the preset scenario is used to represent that the second device needs to be defrosted, and the heat capacity evaluation result is used to represent the efficiency of the target device in storing generated heat, and the heat capacity evaluation result belongs to the device evaluation result.

8. The method of claim 5, wherein, based on the running mode, the target device is evaluated, and a device evaluation result is obtained, including: in response to the running mode being a waste heat heating mode, the total amount of heat energy generated by the target device is evaluated, and a first evaluation result is obtained; wherein the waste heat heating mode is used to represent a mode in which the heat energy generated by the first device is used to heat the second device when the heat energy generated by the first device is greater than a preset threshold, the first evaluation result is used to represent the efficiency of the target device in generating heat within a preset time period, and the first evaluation result belongs to the device evaluation result.

9. The method of claim 5, wherein, based on the running mode, the target device is evaluated, and a device evaluation result is obtained, including: in response to the running mode being a reinforced refrigeration mode, the total amount of heat energy dissipated by the target device is evaluated, and a second evaluation result is obtained; wherein the reinforced refrigeration mode is used to represent a mode in which the heat energy generated by the first device is used to dissipate heat from the second device when the ambient temperature of the environment in which the vehicle is located is greater than a second preset temperature, the second preset temperature is greater than the first preset temperature, the second evaluation result is used to represent the efficiency of the target device in dissipating heat within a preset time period, and the second evaluation result belongs to the device evaluation result.

10. A vehicle characterized by comprising: including: a memory storing an executable program; A processor configured to execute the program, wherein the program performs the method of any one of claims 1-9 when executed.

11. A computer readable storage medium, characterized in that, The computer readable storage medium comprises a stored executable program, wherein the executable program controls a device in which the storage medium is located to perform the method of any one of claims 1-9 when executed.

12. A computer program product, characterised in that, A computer program that, when executed by a processor, implements the method of any one of claims 1-9.

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