Vehicle thermal management control method, vehicle thermal management control system, and vehicle

Abstract

The application provides a vehicle thermal management control method, a vehicle thermal management control system and a vehicle. The vehicle thermal management control method comprises the following steps: obtaining travel information of a next trip of the vehicle; determining a preheating target according to the travel information, the preheating target comprising at least one of reducing a cold start duration of a thermal management system and reducing an operating power of the thermal management system; determining a thermal management strategy according to the preheating target, the thermal management strategy comprising allocating a heat storage amount among the thermal management system of the vehicle, an electric drive system of the vehicle and a battery system of the vehicle; and when the vehicle is connected to a charging device, controlling the thermal management system, the electric drive system and the battery system to receive electric energy of the charging device and executing the thermal management strategy. In this way, the thermal management system, the electric drive system and the battery system all participate in heat storage; and the thermal management strategy is adjusted according to different travel information, so that the vehicle thermal management control method is suitable for various vehicle travel scenarios.

Description

Technical Field

[0001] This application relates to the field of vehicle thermal management, and more particularly to a vehicle thermal management control method, a vehicle thermal management control system, and a vehicle. Background Technology

[0002] The energy consumption of vehicle thermal management systems is a key focus of current energy consumption optimization for new energy vehicles, especially in low-temperature environments. Balancing energy consumption and comfort in thermal management systems has always been a key research and development priority. While heat pump systems improve thermal management energy consumption compared to PTC (positive temperature coefficient) heating systems, they still account for over 30% of total vehicle energy consumption at low temperatures. During the cold start phase, the energy consumption of the thermal management system can reach over 40% of the total vehicle energy consumption.

[0003] Furthermore, in low-temperature environments, the thermal management system relies on the vehicle's battery system for heat generation. During vehicle startup, the thermal management system cannot absorb heat from the outside, and it takes time for the system to start up and build up its heating capacity. In low-temperature environments, the rate of cabin warming is limited, resulting in poor vehicle range and comfort in cold conditions. Summary of the Invention

[0004] This application provides a vehicle thermal management control method, a vehicle thermal management control system, and a vehicle that improves the vehicle's range and comfort in low-temperature environments.

[0005] In a first aspect, this application provides a vehicle thermal management control method, comprising: Obtain the travel information for the vehicle's next trip; Based on the travel information, a preheating target is determined, which includes at least one of reducing the cold start time of the thermal management system and reducing the operating power of the thermal management system; Based on the preheating target, a thermal management strategy is determined, which includes the distribution of heat storage among the vehicle's thermal management system, the vehicle's electric drive system, and the vehicle's battery system. When the vehicle is connected to a charging device, the thermal management system, the electric drive system, and the battery system are controlled to receive electrical energy from the charging device and execute the thermal management strategy.

[0006] Optionally, the preheating objective includes reducing the cold start time of the thermal management system, and the thermal management strategy includes allocating at least some heat storage capacity to the thermal management system.

[0007] Optionally, the preheating objective includes reducing the operating power of the thermal management system, and the thermal management strategy includes allocating at least some heat storage to the battery system.

[0008] Optionally, the travel information includes travel data, which includes at least one of travel duration, travel distance, and the energy consumption required for the vehicle to travel from the origin to the destination.

[0009] Optionally, determining the preheating target based on the travel information includes: When the travel data is less than the first set value, the preheating target is determined to include at least reducing the cold start time of the thermal management system; When the travel data is greater than or equal to the first set value and less than the second set value, the preheating target is determined to be to reduce the cold start time of the thermal management system and reduce the operating power of the thermal management system. When the travel data is greater than or equal to the second set value, the preheating target is determined to include at least reducing the operating power of the thermal management system; wherein the first set value is less than the second set value.

[0010] Optionally, determining the thermal management strategy based on the preheating target includes: Based on the preheating target, the user's preferred temperature in the vehicle's cabin, and the ambient temperature of the vehicle, determine the required heat storage for the vehicle's next trip, the minimum cold start heat storage of the thermal management system, and the maximum allowable heat storage of the thermal management system. Based on the required heat storage capacity, the minimum heat storage capacity for cold start, and the maximum allowable heat storage capacity, determine the target heat storage temperature for each of the thermal management system, the electric drive system, and the battery system; Based on the target heat storage temperatures of the thermal management system, the electric drive system, and the battery system, the thermal management strategy is determined to distribute the heat storage among the vehicle's thermal management system, the vehicle's electric drive system, and the vehicle's battery system, so that the thermal management system, the electric drive system, and the battery system respectively store heat to their respective target heat storage temperatures.

[0011] Optionally, the travel information also includes travel driving data, which includes at least one of travel duration, travel distance, and the energy consumption required for the vehicle to travel from the origin to the destination. The step of determining the target heat storage temperature for the thermal management system, the electric drive system, and the battery system based on the required heat storage, the minimum cold start heat storage, and the maximum allowable heat storage includes: When the travel data is greater than or equal to a first set value, and when the maximum allowable heat storage is greater than or equal to the required heat storage, the target heat storage temperature of the thermal management system, the electric drive system, and the battery system is determined based on the required heat storage.

[0012] Optionally, if the travel data is greater than or equal to the first set value, when the maximum allowable heat storage is less than the required heat storage, the total power consumption of the thermal management system during vehicle travel is estimated under multiple heat storage conditions between the minimum cold start heat storage and the maximum allowable heat storage. The target heat storage temperature of the thermal management system, the electric drive system, and the battery system is determined based on the heat storage corresponding to the minimum value under multiple total power consumption.

[0013] Optionally, determining the preheating target based on the travel information includes: When the temperature of at least one of the ambient temperature at the vehicle's departure point and the ambient temperature at its destination is less than or equal to a set temperature, a preheating target is determined based on the travel information.

[0014] Optionally, before determining the preheating target based on the travel information, the method further includes: Obtain the electrical connection status between the vehicle and the charging device; When the electrical connection status indicates that the vehicle is electrically connected to the charging device, the maximum allowable charging power of the charging device and the requested charging power of the vehicle are obtained; The step of determining the pre-heating target based on the travel information includes: When the maximum allowable charging power of the charging device minus the requested charging power of the vehicle is greater than the start-up power of the thermal management system, a preheating target is determined based on the travel information.

[0015] Secondly, this application provides a vehicle thermal management control system for a vehicle, the vehicle thermal management control system being used to execute the vehicle thermal management control method as described in the first aspect.

[0016] Thirdly, this application provides a vehicle, including: Battery system; Electric drive system; A thermal management system is connected to the battery system and the electric drive system; and The vehicle thermal management control system as described in the second aspect is connected to the battery system, the electric drive system, and the thermal management system.

[0017] This application controls the thermal management system, electric drive system, and battery system to store heat using electrical energy input from the charging device before the user departs. Because of the heat storage in the battery and electric drive systems, the low-pressure side of the thermal management system has higher low-pressure and temperature. By increasing the temperature of the battery and electric drive systems, the frequency of active heating requests from these systems during vehicle use is reduced, improving heat recovery efficiency and further reducing driving energy consumption. Simultaneously, it reduces the electrical energy consumed by the thermal management system in low-temperature environments, thus benefiting the vehicle's range and driving range. When the vehicle is in a low-temperature environment and requires a cold start, there is no need to heat the heat pump system, electric drive system, or battery system after the vehicle is started, thereby reducing cold start time and enabling rapid warming of the passenger compartment after starting the vehicle, thus improving vehicle comfort.

[0018] Furthermore, after obtaining the vehicle's next trip information, the corresponding preheating target is determined based on the trip information. Different trip information can yield different preheating targets, which in turn distributes the stored heat among the vehicle's thermal management system, electric drive system, and battery system. This comprehensive coordination of the vehicle's thermal management system, electric drive system, and battery system during the heat storage process before the vehicle's departure adapts to different travel conditions. As a result, the thermal management strategy can be adjusted for different trip information, making the vehicle thermal management control method applicable to various vehicle travel scenarios. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0020] Figure 1 The diagram shown is a flowchart of one embodiment of the vehicle thermal management control method of this application.

[0021] Figure 2 The flowchart shown is a detailed breakdown of the steps in the vehicle thermal management control method of this application.

[0022] Figure 3 The flowchart shown is a detailed breakdown of the steps in the vehicle thermal management control method of this application.

[0023] Figure 4 The flowchart shown is a detailed breakdown of the steps in the vehicle thermal management control method of this application.

[0024] Figure 5 The flowchart shown is a detailed breakdown of the steps in the vehicle thermal management control method of this application.

[0025] Figure 6The diagram shown is a schematic representation of an embodiment of the vehicle thermal management control system of this application.

[0026] Explanation of reference numerals in the attached figures: 10, Vehicle thermal management control system; 11, Processor; 12, Storage medium; 13, Memory; 14, Interface. Detailed Implementation

[0027] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0028] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0029] This application provides a vehicle thermal management control method, a vehicle thermal management control system, and a vehicle. The vehicle thermal management control method, vehicle thermal management control system, and vehicle of this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0030] This application provides a vehicle, specifically a pure electric vehicle or a hybrid vehicle. The vehicle includes an electric drive system, a battery system, a thermal management system, and a vehicle thermal management control system. In some embodiments, the thermal management system is a water source heat pump system, and the thermal management system includes a cabin circuit, an electric drive circuit, and a battery circuit. The thermal management system includes a flowing heat transfer medium, which, by heating or cooling, enables heat exchange between the heat transfer medium and the cabin circuit, electric drive circuit, and battery circuit. The thermal management system is connected to the battery system and the electric drive system, and the cabin circuit, electric drive circuit, and battery circuit can be interconnected, thereby facilitating the heating of the cabin circuit by recovering the heat generated by the electric drive system and battery system during operation. The electric drive circuit is located within the electric drive system for heating or cooling the electric drive system; the battery circuit is located within the battery system for heating or cooling the battery system; and the cabin circuit is located within the vehicle's cabin for heating or cooling the passenger compartment. The vehicle thermal management control system is connected to the battery system, electric drive system, and thermal management system to control the heating and cooling of the battery system, electric drive system, and thermal management system, as well as the heat exchange process between the battery system, electric drive system, and thermal management system.

[0031] See Figure 1 As shown, the vehicle thermal management control method includes steps S10, S20, S30 and S40.

[0032] In step S10, the travel information for the vehicle's next trip is obtained.

[0033] The next trip is the most recent trip the vehicle will be making. Trip information can indicate details of the next trip, such as travel time, distance, destination, ambient temperature, etc. Get the next trip's travel information before you travel.

[0034] In step S20, a preheating target is determined based on the travel information. The preheating target includes at least one of reducing the cold start time of the thermal management system and reducing the operating power consumption of the thermal management system.

[0035] In some embodiments, the preheating target can be to reduce the cold start time of the heat pipe system, or to reduce the cold start time and power consumption of the thermal management system, or to reduce the power consumption of the thermal management system. Appropriate preheating targets can be determined based on travel information. The preheating targets can differ depending on the specific travel information, allowing for the adoption of appropriate preheating targets for different travel scenarios.

[0036] In step S30, a thermal management strategy is determined based on the preheating target. The thermal management strategy includes the distribution of stored heat among the vehicle's thermal management system, electric drive system, and battery system.

[0037] Thermal management strategies can allocate heat storage separately to the thermal management system, the electric drive system, or the battery system, or simultaneously to two or all of the three systems. The amount of heat storage can be distributed among the vehicle's thermal management system, electric drive system, and battery system. Different thermal management strategies can be adopted when preheating targets differ; for example, different systems can be used for heat storage, or the amount of heat storage in each system can be adjusted.

[0038] In step S40, when the vehicle is connected to the charging device, the thermal management system, electric drive system and battery system are controlled to receive electrical energy from the charging device and execute thermal management strategies.

[0039] The charging device can be a charging station or a wireless charging device, which charges the vehicle. When the vehicle is charging, each system receives electrical energy from the charging device and distributes the stored heat among the systems.

[0040] By controlling the thermal management system, electric drive system, and battery system to store heat using electrical energy input from the charging device before the user departs, the thermal management system achieves higher low-pressure and temperature levels on its low-pressure side due to the heat storage in the battery and electric drive systems. This increased temperature reduces the frequency of active heating requests from the battery and electric drive systems during vehicle use, improving heat recovery efficiency and further reducing energy consumption. Simultaneously, it reduces the electrical energy consumed by the thermal management system in low-temperature environments, thus benefiting the vehicle's range and driving range. When the vehicle is in a low-temperature environment and requires a cold start, there is no need to heat the heat pump system, electric drive system, or battery system after the vehicle is started, reducing cold start time and enabling rapid warming of the passenger cabin after starting the vehicle, thereby improving vehicle comfort.

[0041] Furthermore, after obtaining the vehicle's next trip information, the corresponding preheating target is determined based on the trip information. Different trip information can yield different preheating targets, which in turn distributes the stored heat among the vehicle's thermal management system, electric drive system, and battery system. This comprehensive coordination of the vehicle's thermal management system, electric drive system, and battery system during the heat storage process before the vehicle's departure adapts to different travel conditions. As a result, the thermal management strategy can be adjusted for different trip information, making the vehicle thermal management control method applicable to various vehicle travel scenarios.

[0042] In an optional embodiment, the preheating objective includes reducing the cold start time of the thermal management system, and the thermal management strategy includes allocating at least some heat storage to the thermal management system.

[0043] By allocating heat storage capacity to the thermal management system, heat is stored in the system before vehicle departure, causing its temperature to rise. After vehicle startup, the thermal management system's temperature is higher than the ambient temperature, eliminating the need for heating via the battery system. This reduces cold start time and enables rapid heating of the passenger compartment after vehicle startup, improving comfort. Furthermore, the thermal management system can provide heat to the battery and electric drive systems, allowing them to quickly reach operating temperatures after vehicle startup.

[0044] Optionally, preheating objectives include reducing the operating power of the thermal management system, and thermal management strategies include allocating at least some heat storage to the battery system.

[0045] By allocating heat storage to the battery system, heat is stored in the thermal management system before the vehicle departs, at least raising the battery system temperature. This increased battery system temperature reduces the frequency of active heating requests during vehicle use, improving heat recovery efficiency and further reducing energy consumption. Furthermore, the heat generated by the battery operation provides heat to the thermal management system, reducing its operating power and achieving the preheating goal, thus contributing to improved vehicle range and driving range.

[0046] In an optional embodiment, the travel information includes travel data, which includes at least one of travel duration, travel distance, and the energy consumption required for the vehicle to travel from the origin to the destination.

[0047] Trip data can include one or more of the following: trip duration, trip distance, and the energy consumption required for the vehicle to travel from its origin to its destination. Users can input their next trip information into the vehicle in advance via wireless transmission on their devices, such as providing navigation information from their mobile phones or through the vehicle's interactive panel. Specifically, users can input the destination of their next trip, and the vehicle can calculate the trip duration and distance. Furthermore, the vehicle can also calculate the energy consumption required for the trip from its origin to its destination.

[0048] Thus, after acquiring the vehicle's next trip information, the vehicle thermal management control system can determine the corresponding preheating target based on different trip information. This allows the vehicle thermal management control method to adjust the thermal management strategy according to at least one of the following: trip duration, trip distance, and the energy consumption required for the vehicle to travel from the origin to the destination, making the vehicle thermal management control method applicable to various vehicle travel scenarios.

[0049] In an optional embodiment, see Figure 2As shown, step S20, based on travel information, determines the preheating target, including steps S211, S212 and S213.

[0050] In step S211, when the travel data is less than the first set value, the preheating target is determined to include at least reducing the cold start time of the thermal management system.

[0051] In step S212, when the travel data is greater than or equal to the first set value and less than the second set value, the preheating target is determined to be to reduce the cold start time of the thermal management system and reduce the operating power of the thermal management system.

[0052] In step S213, when the travel data is greater than or equal to the second set value, the preheating target is determined to include at least reducing the operating power of the thermal management system. The first set value is less than the second set value.

[0053] In some embodiments, the travel data is the travel duration, with a first set value being a first set duration and a second set value being a second set duration. For example, the first set duration could be set to 2 hours and the second set duration could be set to 4 hours. In other embodiments, the travel data is the travel distance, with a first set value being a first set distance and a second set value being a second set distance. For example, the first set duration could be set to 100 kilometers and the second set duration could be set to 300 kilometers. In still other embodiments, the travel data is the energy consumption required for the vehicle to travel from its origin to its destination, and this energy consumption could be the required battery energy consumption. The first set value is the first set energy consumption, and the second set value is the second set energy consumption. For example, the first set duration could be set to 40% of the total battery energy consumption, and the second set duration could be set to 80% of the total battery energy consumption. This application does not impose specific limitations on the travel data and the corresponding first and second set values.

[0054] Thus, based on travel data, the vehicle's next trip is categorized as short-distance, medium-to-long-distance, and long-distance. When the travel data is less than a first preset value, the next trip is determined to be a short-distance trip. The energy stored in the vehicle's battery is sufficient to meet the vehicle's internal heating needs while completing the trip. The preheating goal is to reduce the cold start time of the thermal management system and determine the thermal management strategy to achieve rapid warming of the passenger cabin after the vehicle starts, thereby improving vehicle comfort. When the travel data is greater than or equal to the first preset value and less than a second preset value, the next trip is determined to be a medium-to-long-distance trip. The preheating goal is to reduce the cold start time of the thermal management system and reduce the operating power of the thermal management system, thereby coordinating the energy stored in the battery to meet the vehicle's internal heating needs while completing the trip, ensuring that the battery power can be maintained until the vehicle reaches its destination, while also reducing the cold start time of the thermal management system and achieving rapid warming of the passenger cabin after the vehicle starts, thereby improving vehicle comfort. When the travel data is greater than or equal to a second preset value, it is determined that the vehicle's next trip will be a long-distance journey. The battery system's electrical energy may be insufficient to simultaneously meet the vehicle's needs to reach its destination and maintain the heating / cooling requirements of the vehicle's thermal management system. Therefore, the preheating objective includes at least reducing the operating power of the thermal management system to prioritize meeting the vehicle's needs to reach its destination, thereby improving the vehicle's range during long-distance travel. In some embodiments, the preheating objective can be reducing the operating power of the thermal management system and reducing the cold start time of the thermal management system.

[0055] In an optional embodiment, see Figure 3 As shown, step S30 involves determining the thermal management strategy based on the preheating target, including steps S31, S32, and S33.

[0056] In step S31, based on the preheating target, the user's usual temperature in the vehicle's cabin, and the ambient temperature of the vehicle, the required heat storage for the vehicle's next trip, the minimum cold start heat storage for the thermal management system, and the maximum allowable heat storage for the thermal management system are determined.

[0057] User-preferred temperatures can be set manually by the user, or by referencing the temperature set during the vehicle's most recent trip, or determined based on multiple historical temperatures within the cabin. The ambient temperature of the vehicle can be obtained through temperature sensors installed within the vehicle, or the vehicle's intelligent management system can proactively acquire temperature data from the vehicle's current location, destination, and areas traversed throughout the journey. In other embodiments, further information such as weather conditions at the next destination, including ambient temperature, humidity, and wind speed, can be used to determine the required heat storage for the next trip, the minimum cold-start heat storage for the thermal management system, and the maximum permissible heat storage for the thermal management system.

[0058] In step S32, the target heat storage temperature of the thermal management system, electric drive system and battery system is determined based on the required heat storage, the minimum heat storage for cold start and the maximum allowable heat storage.

[0059] In step S33, based on the target heat storage temperatures of the thermal management system, electric drive system, and battery system, the thermal management strategy is determined to distribute the heat storage among the vehicle's thermal management system, electric drive system, and battery system, so that the thermal management system, electric drive system, and battery system respectively store heat to their respective target heat storage temperatures.

[0060] Based on the preheating target, the user's preferred temperature inside the vehicle's cabin, and the ambient temperature, the required heat storage for the vehicle's next trip, the minimum cold-start heat storage for the thermal management system, and the maximum permissible heat storage for the thermal management system are determined. This ensures that after the vehicle is started, the thermal management system can quickly warm the passenger cabin to the user's preferred temperature, thereby improving vehicle comfort. Furthermore, based on the required heat storage, minimum cold-start heat storage, and maximum permissible heat storage, the target heat storage temperatures for the thermal management system, electric drive system, and battery system are determined. These systems are then configured to store heat to their respective target temperatures. This reduces the power consumption of the thermal management system and more accurately ensures that the battery has sufficient charge to reach the vehicle's destination, thus improving the vehicle's range for long-distance travel.

[0061] In an optional embodiment, see Figure 4 As shown, step S32 determines the target heat storage temperature of the thermal management system, electric drive system and battery system based on the required heat storage, the minimum heat storage for cold start and the maximum allowable heat storage, including steps S321, S322 and S323.

[0062] In step S321, when the travel data is greater than or equal to the first set value, and when the maximum allowable heat storage is greater than or equal to the required heat storage, the target heat storage temperature of the thermal management system, electric drive system and battery system is determined based on the required heat storage.

[0063] In step S322, when the travel data is greater than or equal to the first set value, and when the maximum allowable heat storage is less than the required heat storage, the total power consumption of the thermal management system during vehicle travel is estimated for multiple heat storage values ​​between the minimum cold start heat storage and the maximum allowable heat storage.

[0064] In step S323, the target heat storage temperature of the thermal management system, electric drive system and battery system is determined based on the heat storage corresponding to the minimum value under multiple total power consumption.

[0065] Specifically, the calculation can be performed as follows: Starting from the minimum heat storage capacity during cold start, determine multiple heat storage capacity steps up to the maximum allowable heat storage capacity. Further, determine the total electricity consumption of the battery system supplying the thermal management system under the aforementioned heat storage capacity during vehicle operation. Take the heat storage capacity corresponding to the minimum total electricity consumption to determine the target heat storage temperature for the thermal management system, electric drive system, and battery system.

[0066] When the travel data is greater than or equal to the first set value, it indicates a medium-to-long-distance or long-distance trip. When the maximum allowable heat storage is greater than or equal to the required heat storage, the energy stored in the vehicle's power battery is sufficient to meet the vehicle's cold start requirements and provide enough energy for both the trip and interior heating. The target heat storage temperatures for the heat pump system, electric drive system, and battery system can be determined based on the required heat storage. When the maximum allowable heat storage is less than the required heat storage, the energy stored in the power battery needs to be coordinated to meet the vehicle's interior heating needs while completing the trip, ensuring the battery charge is sufficient until the vehicle reaches its destination. When the maximum allowable heat storage is less than the required heat storage, the heat storage of the thermal management system, electric drive system, and battery system is allocated based on the above calculations to minimize the total power consumption of the thermal management system. Priority is given to ensuring the battery charge is sufficient until the vehicle reaches its destination, while simultaneously meeting the energy requirements for interior heating as much as possible. This reduces the cold start time of the thermal management system and enables rapid warming of the vehicle's cabin after startup, thereby improving vehicle comfort and range.

[0067] In an optional embodiment, step S20, determining the preheating target based on travel information, includes step S22.

[0068] In step S22, when at least one of the ambient temperature at the vehicle's departure point and the ambient temperature at the destination is less than or equal to a set temperature, a preheating target is determined based on the travel information.

[0069] If at least one of the ambient temperatures at the departure point and the destination is less than or equal to the set temperature (e.g., 0°C), it indicates a low ambient temperature. In low temperatures, a preheating target is determined based on travel information, and heat is stored in advance. When the temperature is high, a preheating target does not need to be determined based on travel information, and therefore preheating is not required before departure. Thus, given a known vehicle destination, a preheating target can be predictively determined based on vehicle driving needs, reducing the cold start time of the thermal management system. This allows for rapid warming of the vehicle's cabin after startup, improving vehicle comfort and range.

[0070] In an optional embodiment, see Figure 5 As shown, before determining the preheating target based on travel information in step S20, the method also includes steps S50 and S60.

[0071] In step S50, the electrical connection status between the vehicle and the charging device is obtained.

[0072] The electrical connection status between the vehicle and the charging device can be determined by the current and voltage of the charging gun, thus determining whether the vehicle is charging. In some embodiments, it can be determined whether the thermal management system needs to be activated for heating. This can be determined based on whether at least one of the ambient temperature at the vehicle's origin and destination is less than or equal to a set temperature. If so, it is then determined whether the vehicle and the charging device are electrically connected. In other embodiments, the determination steps can be reversed: first determining whether there is an electrical connection, then determining whether heating is needed.

[0073] In step S60, when the electrical connection status indicates that the vehicle is electrically connected to the charging device, the maximum allowable charging power of the charging device and the requested charging power of the vehicle are obtained.

[0074] Step S20, determining the preheating target based on travel information, includes step S23.

[0075] In step S23, when the maximum allowable charging power of the charging device minus the vehicle's requested charging power is greater than the starting power of the thermal management system, a preheating target is determined based on the travel information.

[0076] When the maximum permissible charging power of the charging device minus the vehicle's requested charging power is greater than the activation power of the thermal management system, it ensures that the maximum permissible charging power of the charging device can meet the vehicle's charging power for the battery system. Simultaneously, the charging device can provide electrical energy to the thermal management system, controlling the thermal management system, electric drive system, and battery system to execute thermal management strategies. In this way, the vehicle avoids interfering with the charging process of the battery system while executing its thermal management strategies.

[0077] In some embodiments, when the vehicle's next departure time is determined, the required heating time for this trip can be obtained by referring to historical heating time information, and the required heating time can be further adjusted according to the ambient temperature of the vehicle's departure location. The activation time of the thermal management strategy is calculated based on the next departure time and the required heating time, and the vehicle's thermal management control system is activated at this activation time to execute the thermal management strategy.

[0078] Figure 6 This is a schematic diagram of a vehicle thermal management control system 10 provided in one embodiment of this application. The vehicle thermal management control system 10 includes a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements a vehicle thermal management control method.

[0079] exist Figure 6 In the illustrated embodiment, the vehicle thermal management control system 10 may include a storage medium 12, which may store a program that can be called by the processor 11, and may include a non-volatile storage medium. In some embodiments, the vehicle thermal management control system 10 may include memory 13 and an interface 14. In some embodiments, the vehicle thermal management control system 10 may also include other hardware depending on the actual application.

[0080] The storage medium 12 stores a program that, when executed, implements a vehicle thermal management control method. In some embodiments, it may take the form of a computer program product implemented on one or more storage media 12 containing program code (including but not limited to disk storage, CD-ROM, optical storage, etc.). The storage medium 12 includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. The information may be computer-readable instructions, data structures, program modules, or other data. Examples of storage media 12 include, but are not limited to: phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information that can be accessed by a computing device.

[0081] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A vehicle thermal management control method, characterized in that, include: Obtain the travel information for the vehicle's next trip; Based on the travel information, a preheating target is determined, which includes at least one of reducing the cold start time of the thermal management system and reducing the operating power of the thermal management system; Based on the preheating target, a thermal management strategy is determined, which includes the distribution of heat storage among the vehicle's thermal management system, the vehicle's electric drive system, and the vehicle's battery system. When the vehicle is connected to the charging device, the thermal management system, the electric drive system, and the battery system are controlled to receive electrical energy from the charging device and execute the thermal management strategy. The step of determining the thermal management strategy based on the preheating target includes: Based on the preheating target, the user's preferred temperature in the vehicle's cabin, and the ambient temperature of the vehicle, determine the required heat storage for the vehicle's next trip, the minimum cold start heat storage of the thermal management system, and the maximum allowable heat storage of the thermal management system. Based on the required heat storage capacity, the minimum heat storage capacity for cold start, and the maximum allowable heat storage capacity, determine the target heat storage temperature for each of the thermal management system, the electric drive system, and the battery system; Based on the target heat storage temperatures of the thermal management system, the electric drive system, and the battery system, the thermal management strategy is determined to distribute the heat storage among the vehicle's thermal management system, the vehicle's electric drive system, and the vehicle's battery system, so that the thermal management system, the electric drive system, and the battery system respectively store heat to their respective target heat storage temperatures.

2. The vehicle thermal management control method according to claim 1, characterized in that, The preheating objective includes reducing the cold start time of the thermal management system, and the thermal management strategy includes allocating at least some heat storage capacity to the thermal management system; and / or The preheating objective includes reducing the operating power of the thermal management system, and the thermal management strategy includes allocating at least some heat storage capacity to the battery system.

3. The vehicle thermal management control method according to claim 1, characterized in that, The travel information includes travel data, which includes at least one of travel duration, travel distance, and the energy consumption required for the vehicle to travel from the origin to the destination.

4. The vehicle thermal management control method according to claim 3, characterized in that, The step of determining the pre-heating target based on the travel information includes: When the travel data is less than the first set value, the preheating target is determined to include at least reducing the cold start time of the thermal management system; When the travel data is greater than or equal to the first set value and less than the second set value, the preheating target is determined to be to reduce the cold start time of the thermal management system and reduce the operating power of the thermal management system. When the travel data is greater than or equal to the second set value, the preheating target is determined to include at least reducing the operating power of the thermal management system; wherein the first set value is less than the second set value.

5. The vehicle thermal management control method according to claim 1, characterized in that, The travel information also includes travel data, which includes at least one of travel duration, travel distance, and the energy consumption required for the vehicle to travel from the origin to the destination. The step of determining the target heat storage temperature for the thermal management system, the electric drive system, and the battery system based on the required heat storage, the minimum cold start heat storage, and the maximum allowable heat storage includes: If the travel data is greater than or equal to a first preset value, and the maximum allowable heat storage is greater than or equal to the required heat storage, the target heat storage temperature for the thermal management system, the electric drive system, and the battery system is determined based on the required heat storage; and / or When the travel data is greater than or equal to the first set value, and when the maximum allowable heat storage is less than the required heat storage, the total power consumption of the thermal management system during vehicle travel is estimated at multiple heat storage levels between the minimum cold start heat storage and the maximum allowable heat storage. The target heat storage temperature of the thermal management system, the electric drive system, and the battery system is determined based on the heat storage corresponding to the minimum value under multiple total power consumption.

6. The vehicle thermal management control method according to claim 1, characterized in that, The step of determining the pre-heating target based on the travel information includes: When the temperature of at least one of the ambient temperature at the vehicle's departure point and the ambient temperature at its destination is less than or equal to a set temperature, a preheating target is determined based on the travel information.

7. The vehicle thermal management control method according to claim 1, characterized in that, Before determining the preheating target based on the travel information, the method further includes: Obtain the electrical connection status between the vehicle and the charging device; When the electrical connection status indicates that the vehicle is electrically connected to the charging device, the maximum allowable charging power of the charging device and the requested charging power of the vehicle are obtained; The step of determining the pre-heating target based on the travel information includes: When the maximum allowable charging power of the charging device minus the requested charging power of the vehicle is greater than the start-up power of the thermal management system, a preheating target is determined based on the travel information.

8. A vehicle thermal management control system for a vehicle, characterized in that, The vehicle thermal management control system is used to execute the vehicle thermal management control method as described in any one of claims 1-7.

9. A vehicle, characterized in that, include: Battery system; Electric drive system; A thermal management system connected to the battery system and the electric drive system; and The vehicle thermal management control system as described in claim 8 is connected to the battery system, the electric drive system, and the thermal management system.

Images