Temperature control method, temperature control engine, equipment and medium for quick charging of electric vehicle

Abstract

The invention relates to the technical field of electric automobiles, and discloses a temperature control method, a temperature control engine, equipment and a medium for fast charging of an electric automobile. The method comprises the steps that a vehicle control unit obtains the battery remaining capacity of a current battery in the state that a temperature control starting instruction is received, and the battery remaining capacity of the current battery is obtained on the basis of the type of the temperature control starting instruction and the battery remaining capacity; sending a battery temperature control adjustment starting request to a battery management system; wherein the priority of the active starting temperature control instruction is higher than that of the passive starting temperature control instruction; the battery management system receives the battery temperature control adjustment starting request, and sends a battery temperature control operation starting request to the thermal management system when it is determined that the current battery needs thermal management adjustment; and the thermal management system adjusts the temperature of the current battery according to the battery temperature control operation starting request, so that the temperature of the current battery meets a preset target temperature. According to the technical scheme, the temperature control function can be accurately controlled.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to a temperature control method, temperature control engine, equipment and medium for fast charging of electric vehicles. Background Art

[0002] With the rapid development of the new energy vehicle market, the penetration rate of electric vehicles continues to increase, but the charging speed is greatly affected by temperature, especially in winter and summer, when extreme temperatures can cause battery performance degradation and significantly slow down the charging speed. The charging efficiency of the battery is closely related to temperature. Too low or too high a temperature can affect the diffusion of lithium ions and the speed of chemical reactions. In order to address this issue, new energy vehicle manufacturers and battery manufacturers are strengthening the research and development of thermal management systems to keep the battery within the optimal temperature range during the charging process.

[0003] However, the current temperature control system relies on a passive triggering function, which only starts the vehicle temperature control system by navigating to the charging station. This may cause false triggering and unnecessary energy waste, and the temperature control function cannot be accurately controlled. Summary of the invention

[0004] The present application provides a temperature control method, temperature control engine, equipment and medium for fast charging of electric vehicles, achieving the technical effect of accurately controlling the temperature control function.

[0005] In order to achieve the above objectives, the main technical solutions adopted in this application include: In a first aspect, an embodiment of the present application provides a temperature control method for fast charging of an electric vehicle, the method being applied to a temperature control engine, the temperature control engine comprising a vehicle controller, a battery management system and a thermal management system; wherein: When the vehicle controller receives the start temperature control instruction, it obtains the remaining battery power of the current battery, and sends a start battery temperature control adjustment request to the battery management system based on the type of the start temperature control instruction and the remaining battery power; wherein the start temperature control instruction includes an active start temperature control instruction actively triggered by a user and a passive start temperature control instruction passively triggered by a user, and the priority of the active start temperature control instruction is higher than the priority of the passive start temperature control instruction; The battery management system receives the start-up battery temperature control adjustment request, and sends a start-up battery temperature control operation request to the thermal management system when determining that the current battery requires thermal management adjustment; The thermal management system adjusts the temperature of the current battery according to the startup battery temperature control operation request so that the temperature of the current battery meets a preset target temperature.

[0006] The temperature control method for fast charging of electric vehicles provided in this embodiment obtains the remaining battery power according to the start-up temperature control instruction through the vehicle controller, and responds according to the priority of active and passive start-up instructions. The battery management system can intelligently adjust the temperature control strategy to ensure that the battery operates at the optimal operating temperature. Specifically, by accurately determining whether temperature control operation is required, the thermal management system is only started when necessary, thereby improving system efficiency and avoiding energy waste. In addition, the system effectively maintains the battery temperature within the ideal range through rapid response and precise control, prevents overheating or overcooling, extends battery life and improves overall performance. Overall, the intelligent temperature control management solution of this embodiment not only improves battery safety and service life, but also optimizes the energy efficiency of the system and improves user experience.

[0007] In one embodiment, the sending a startup battery temperature control adjustment request to the battery management system based on the type of the startup temperature control instruction and the remaining battery power includes: Determine a target power consumption that matches the type of the startup temperature control instruction, and send the startup battery temperature control adjustment request to the battery management system when the remaining battery power is greater than or equal to the target power consumption.

[0008] This embodiment achieves intelligent, energy-saving and efficient temperature control operation through precise battery temperature control management. The system calculates the target power consumption according to different types of startup temperature control instructions, and determines whether the remaining battery power is sufficient to ensure that temperature control is started only when the battery has sufficient power. This precise battery temperature control management effectively avoids excessive consumption of battery power and keeps the battery in the optimal operating temperature range, thereby extending battery life and improving energy efficiency. At the same time, the system can dynamically adjust the temperature control operation according to the real-time battery power and temperature control requirements, which improves the system's intelligent decision-making ability and avoids unnecessary energy waste. In the end, users can enjoy stable battery performance while also getting longer battery life, thereby improving the overall user experience.

[0009] In one embodiment, when the type of the start temperature control instruction is the active start temperature control instruction, determining the target power consumption matching the type of the start temperature control instruction includes: Acquiring a current temperature of the current battery, and determining a difference between the current temperature and the preset target temperature; determining battery power consumption based on the current temperature and the difference; The average value of the driving power consumption in the specified time period is determined as the first driving power consumption; A first target power consumption matching the type of the startup temperature control instruction is determined according to the battery power consumption and the first driving power consumption.

[0010] This embodiment monitors the battery temperature in real time and calculates the temperature difference to determine the battery power consumption required during use. By combining historical driving data to predict energy demand, it is possible to more accurately estimate the battery energy consumption during temperature control and driving, thereby determining a safety margin to ensure that even in the worst case, the battery has enough power to complete the fast charging process while maintaining the health of the battery and extending its life.

[0011] In one embodiment, when the type of the start temperature control instruction is the passive start temperature control instruction, determining the target power consumption matching the type of the start temperature control instruction includes: Acquiring a current temperature of the current battery, and determining a difference between the current temperature and the preset target temperature; determining battery power consumption based on the current temperature and the difference; Determine the power consumption of the second trip based on the remaining time to reach the fast charging station and the average discharge power of the battery; A second target power consumption matching the type of the startup temperature control instruction is determined according to the battery power consumption and the second driving power consumption.

[0012] This embodiment can monitor the temperature status of the battery in real time by obtaining the current battery temperature and comparing it with the difference of the target temperature, and provide a basis for temperature control operation to avoid overheating or overcooling of the battery, thereby extending the service life. Based on the temperature difference, the battery energy required for temperature control can also be accurately calculated to ensure the efficiency of temperature control operation and the rational use of battery energy, avoiding unnecessary power consumption. At the same time, combined with the remaining driving time and the average discharge power of the battery, the power demand of the vehicle before arriving at the charging station can be predicted, thereby determining a safety boundary to ensure that even in the worst case, the battery has enough power to complete the fast charging process, while maintaining the health of the battery and extending its life.

[0013] In one embodiment, after sending the request to start the battery temperature control operation to the thermal management system, the method further includes: In response to the remaining power of the battery being greater than or equal to a preset remaining power threshold, sending the start-up battery temperature control operation request to the thermal management system; In response to the remaining power of the battery being less than the preset remaining power threshold, a battery temperature control stop operation request is sent to the thermal management system, so that the thermal management system stops temperature regulation of the current battery according to the battery temperature control stop operation request.

[0014] This embodiment can intelligently control the temperature control operation according to the remaining battery power, so as to achieve the purpose of improving energy efficiency, extending battery life and optimizing battery use. During the execution of the temperature control operation, the current remaining battery power will be monitored. When the remaining battery power is greater than or equal to the remaining power threshold, the temperature control operation will be controlled to execute normally. When the remaining battery power is lower than the remaining power threshold, a request to stop the battery temperature control operation will be sent to the thermal management system to avoid unnecessary power consumption, extend the vehicle's cruising range, and protect the battery from over-discharge.

[0015] In one embodiment, the method further comprises: When the vehicle controller receives the instruction to exit navigation to the fast charging station, it obtains the last charging time difference, and after the charging time difference, sends a request to stop battery temperature control adjustment to the battery management system; wherein the charging time difference represents the time interval from getting off the vehicle to starting charging; The battery management system sends a request to stop the battery temperature control operation to the thermal management system according to the received request to stop the battery temperature control adjustment; The thermal management system stops temperature regulation of the current battery according to the request to stop the battery temperature control operation.

[0016] The vehicle controller of this embodiment optimizes the timing of battery temperature control by obtaining the time difference between the exit navigation to the fast charging station instruction and the last charging time, thereby avoiding unnecessary energy waste. The precise coordination between the battery management system BMS and the thermal management system TMS ensures the accurate execution of temperature control operations and avoids system conflicts and redundant control. Furthermore, when the temperature control operation is stopped, the battery remains within the optimal charging temperature range, which improves charging efficiency, reduces battery loss, and extends battery life.

[0017] In one embodiment, the method further comprises: When the vehicle controller receives the stop temperature control instruction, it sends a request to stop battery temperature control adjustment to the battery management system; wherein the stop temperature control instruction includes an active stop temperature control instruction actively triggered by a user and a passive stop temperature control instruction passively triggered by a user, and the priority of the active stop temperature control instruction is higher than the priority of the passive stop temperature control instruction; The battery management system sends a request to stop the battery temperature control operation to the thermal management system according to the received request to stop the battery temperature control adjustment; The thermal management system stops temperature regulation of the current battery according to the request to stop the battery temperature control operation.

[0018] After receiving the instruction to stop temperature control, the vehicle controller of this embodiment quickly passes the request to the battery management system, and the battery management system further sends a request to stop the battery temperature control operation to the thermal management system to ensure that the system can respond to the temperature control stop demand in real time and avoid unnecessary heating or cooling operations, thereby reducing energy waste. At the same time, through a clear instruction priority mechanism, the system can give priority to temperature control stop requests according to user needs, ensure that the battery is always in a safe temperature range, and improve the battery life. In addition, the intelligent control logic makes the temperature control operation more sophisticated and automated, reduces the complexity of user operations, and improves the overall user experience. Ultimately, the system achieves efficient energy management and precise temperature control adjustment, ensuring the safety of the battery, energy utilization efficiency and stability of vehicle operation.

[0019] In a second aspect, an embodiment of the present application provides a temperature control engine, wherein the temperature control engine includes a vehicle controller, a battery management system, and a thermal management system; wherein: The vehicle controller is used to obtain the remaining battery power of the current battery when receiving the start-up temperature control instruction, and send a start-up battery temperature control adjustment request to the battery management system based on the type of the start-up temperature control instruction and the remaining battery power; wherein the start-up temperature control instruction includes an active start-up temperature control instruction actively triggered by a user and a passive start-up temperature control instruction passively triggered by a user, and the priority of the active start-up temperature control instruction is higher than the priority of the passive start-up temperature control instruction; the battery management system is used to receive the start-up battery temperature control adjustment request, and send a start-up battery temperature control operation request to the thermal management system when determining that the current battery requires thermal management adjustment; The thermal management system is used to adjust the temperature of the current battery according to the startup battery temperature control operation request so that the temperature of the current battery meets a preset target temperature.

[0020] In a third aspect, an embodiment of the present application provides a computer device, including: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the above-mentioned temperature control method for fast charging of an electric vehicle by executing the computer instructions.

[0021] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which computer instructions are stored, and the computer instructions are used to enable a computer to execute the above-mentioned temperature control method for fast charging of an electric vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 1 ; Figure 2 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 2 ; Figure 3 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 3 ; Figure 4 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 4 ; Figure 5 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 5 ; Figure 6 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 6 ; Figure 7 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 7 ; Figure 8 A block diagram of a temperature control engine provided in an embodiment of the present application; Fig. 9 A schematic diagram of the structure of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0025] With the rapid development of the new energy vehicle market, new energy vehicle retail sales have reached 50.84%, and the penetration rate of electric vehicles continues to increase. However, electric vehicles still face a series of technical challenges, one of the most prominent of which is the charging speed, especially in winter and summer, because the battery performance is greatly affected by temperature, the charging speed is significantly slowed down. This problem has become a key difficulty for new energy vehicle manufacturers, battery manufacturers and related technology developers to solve.

[0026] The essence of charging an electric vehicle is to convert electrical energy into chemical energy stored in the battery, and the efficiency of the chemical reaction is significantly affected by temperature. Changes in temperature directly affect the diffusion rate of lithium ions and the speed of chemical reactions in the battery, which in turn determines the efficiency of charging. Due to China's vast territory and large climate differences, the lowest temperature in the northeast can be close to -30°C, while the summer surface temperature in Hainan Province in the south may exceed 40°C. The optimal charging and discharging temperature range of the battery is 20°C to 35°C. Therefore, temperature fluctuations under extreme weather conditions often seriously affect the battery's charging and discharging capabilities, resulting in slower charging speeds and even battery performance degradation.

[0027] To address this issue, new energy vehicle manufacturers and battery technology companies are stepping up research on battery thermal management systems, striving to keep the battery in the optimal operating temperature range (20-35°C) during the charging process. Through the on-board thermal management system (such as heating or cooling equipment), the temperature of the battery can be adjusted before or during charging, thereby improving the charging efficiency of the battery. Current solutions generally rely on the system automatically starting the temperature control function when navigating to the charging pile. However, this approach has some limitations. For example, the user cannot automatically trigger this function without navigation, or mistakenly triggers the temperature control function when there is no clear need, resulting in energy waste. In addition, the existing control interfaces are mostly set in relatively hidden locations, which may make it difficult for some users to quickly find and turn on related options, making it impossible to fully utilize the temperature control system to improve the charging experience.

[0028] In order to solve the above technical problems, according to an embodiment of the present application, a temperature control method embodiment of electric vehicle fast charging is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0029] In this embodiment, a temperature control method for fast charging of an electric vehicle is provided. Figure 1 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 1 ,like Figure 1 As shown, the process includes the following steps: Step S1, when the vehicle controller receives the start temperature control instruction, it obtains the remaining battery power of the current battery, and sends a start battery temperature control adjustment request to the battery management system based on the type of the start temperature control instruction and the remaining battery power; wherein the start temperature control instruction includes an active start temperature control instruction actively triggered by the user and a passive start temperature control instruction passively triggered by the user, and the priority of the active start temperature control instruction is higher than the priority of the passive start temperature control instruction.

[0030] Among them, the vehicle control unit (VCU) is the core control unit of the new energy vehicle, responsible for the control strategy of the whole vehicle and the coordinated management of each subsystem. The battery management system (BMS) is used to monitor and manage the electronic system of the battery unit or battery pack, responsible for protecting the battery from damage, extending the battery life, and ensuring that the battery operates within a safe temperature and voltage range. The start temperature control command is a command issued by the vehicle controller to start or adjust the temperature control strategy of the battery. Among them, the active start temperature control command is triggered by the user, usually through the central control switch or voice control. For example, the user instructs the vehicle to preheat or precool the battery through the central control system to ensure that the battery can work normally under extreme temperature conditions. Since this is the direct intention of the user and has a clear demand, the active start temperature control command has a higher priority. The passive start temperature control command is usually automatically triggered by the system based on other conditions. For example, when it is detected that the vehicle is about to go to a fast charging station, it automatically determines that the battery temperature is low, and it will start the temperature control adjustment so that the battery has a suitable temperature for charging when it arrives at the charging station. This command is automatically initiated by the system based on preset conditions such as the vehicle's driving path, current battery temperature, etc. It usually does not directly reflect the user's real-time needs, so the priority of the passive start temperature control command is low. The remaining battery power refers to the remaining power stored in the battery. The start battery temperature control adjustment request is a command sent by the vehicle controller to the battery management system, indicating that the battery temperature needs to be adjusted to keep the battery within the optimal operating temperature range.

[0031] Specifically, after receiving the instruction to start temperature control, the VCU will first query the remaining battery power of the current battery. Because battery temperature control adjustment requires a certain amount of power, if the battery power is insufficient, starting temperature control may affect the normal use of the battery, or even cause the battery power to run out. Therefore, the VCU must ensure that the battery power is sufficient before starting the temperature control operation. If the battery power is sufficient and the temperature control instruction is an active start temperature control instruction, the VCU will give priority to sending a request to start temperature control adjustment to the BMS. This is because the active instruction is a clear demand of the user, and the VCU will execute it according to the user's wishes.

[0032] If the battery power is low, the VCU will cancel the temperature control request and provide a reminder to the user. For example, a pop-up message will appear on the central control display: "Battery power is low, this function cannot be turned on." This can prevent the temperature control from failing to start normally or further battery discharge due to low battery power.

[0033] If the temperature control command is passively initiated, the VCU's behavior also depends on the remaining battery power. If the battery power is sufficient, the VCU will execute the temperature control adjustment request; but if the battery power is insufficient, the VCU may postpone or cancel the command and give a corresponding battery power reminder.

[0034] Step S3, the battery management system receives a request to start battery temperature control adjustment, and when it is determined that the current battery requires thermal management adjustment, sends a request to start battery temperature control operation to the thermal management system.

[0035] Among them, the thermal management system (TMS) is responsible for controlling and adjusting the temperature of the battery pack to ensure that they work within the optimal temperature range to ensure the safety of electric vehicles. For example, the battery will generate a lot of heat during the charging and discharging process, especially during high-power charging or high-power discharging. The heat accumulation can easily lead to excessive temperature, affecting battery performance and even causing safety problems. Therefore, TMS can cool the battery and keep the battery temperature within a safe range. In a cold environment, the temperature of the battery may be too low, affecting the charging efficiency and battery performance. At this time, TMS will increase the battery temperature by heating to ensure that it can work normally.

[0036] Specifically, the BMS will determine whether thermal management adjustment is needed based on the current battery status, such as temperature. If the battery temperature is too high or too low, the BMS will assume that the battery needs to be heated or cooled. Once the BMS confirms that the battery temperature needs to be adjusted, it will send a request to start the battery temperature control operation to the TMS. This request may include heating, cooling, or other temperature control strategies, depending on the temperature status of the battery. This request indicates that the TMS needs to start working to adjust the battery temperature.

[0037] Step S5: the thermal management system adjusts the temperature of the current battery according to the request to start the battery temperature control operation, so that the temperature of the current battery meets the preset target temperature.

[0038] The target temperature refers to the optimal temperature for battery charging and discharging, which can be 20-35°C.

[0039] Specifically, TMS decides to take heating or cooling measures based on the difference between the current battery temperature and the target temperature. This may include starting the PTC heater, adjusting the coolant circulation, using phase change materials or other heating / cooling technologies. Specifically, if the battery temperature is lower than the target temperature, TMS will start the heating system (such as a PTC heater) to increase the battery temperature. If the battery temperature is too high, TMS will start the cooling system (such as a liquid cooling system) to lower the battery temperature. During the adjustment process, TMS continuously monitors the battery temperature and adjusts the intensity of heating or cooling based on real-time data to ensure that the battery temperature is stably close to the target temperature.

[0040] The temperature control method for fast charging of electric vehicles provided in this embodiment obtains the remaining battery power according to the start-up temperature control instruction through the vehicle controller, and responds according to the priority of active and passive start-up instructions. The battery management system can intelligently adjust the temperature control strategy to ensure that the battery operates at the optimal operating temperature. Specifically, by accurately determining whether temperature control operation is required, the thermal management system is only started when necessary, thereby improving system efficiency and avoiding energy waste. In addition, the system effectively maintains the battery temperature within the ideal range through rapid response and precise control, prevents overheating or overcooling, extends battery life and improves overall performance. Overall, the intelligent temperature control management solution of this embodiment not only improves battery safety and service life, but also optimizes the energy efficiency of the system and improves user experience.

[0041] Figure 2 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 2 , the process may include the following steps: Step S11, determining a target power consumption that matches the type of the start temperature control instruction, and sending a start battery temperature control adjustment request to a battery management system when the remaining battery power is greater than or equal to the target power consumption.

[0042] The target power consumption refers to the power consumption required to adjust the battery from the current temperature to the preset target temperature.

[0043] Specifically, the target power consumption required will vary depending on the type of temperature control start instruction. For example, the energy required for battery heating and cooling operations will be quite different. The VCU needs to calculate the target power consumption that matches the instruction type based on the instruction type, combined with historical data and statistical analysis. After receiving the temperature control start instruction, the VCU will immediately obtain the remaining battery power of the current battery and compare it with the target power consumption. If the remaining battery power is greater than or equal to the target power consumption, the VCU believes that the current battery has sufficient power to support the temperature control operation, and thus decides whether to start the battery temperature control adjustment request. When the VCU confirms that the remaining battery power is sufficient, it will send a request to start the battery temperature control adjustment to the BMS to adjust the battery temperature to ensure that the battery is in the optimal operating temperature range.

[0044] This embodiment achieves intelligent, energy-saving and efficient temperature control operation through precise battery temperature control management. The system calculates the target power consumption according to different types of startup temperature control instructions, and determines whether the remaining battery power is sufficient to ensure that temperature control is started only when the battery has sufficient power. This precise battery temperature control management effectively avoids excessive consumption of battery power and keeps the battery in the optimal operating temperature range, thereby extending battery life and improving energy efficiency. At the same time, the system can dynamically adjust the temperature control operation according to the real-time battery power and temperature control requirements, which improves the system's intelligent decision-making ability and avoids unnecessary energy waste. In the end, users can enjoy stable battery performance while also getting longer battery life, thereby improving the overall user experience.

[0045] Figure 3 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 3 In the case where the type of the start temperature control instruction is an active start temperature control instruction, the process of determining the target power consumption matching the type of the start temperature control instruction may include the following steps: Step S1111, obtaining the current temperature of the current battery, and determining the difference between the current temperature and a preset target temperature.

[0046] Specifically, in the case of actively starting the temperature control command, the user can start the temperature control operation through the central control switch or voice control, and know the route of the charging station or navigate through the mobile phone navigation application scenario. When the user performs these operations, the BMS monitors the current temperature of the battery in real time through the built-in temperature sensor. These temperature sensors can provide accurate battery cell temperature or battery pack temperature, which is critical to the safety and performance of the battery. By obtaining the current temperature of the battery, any temperature anomalies can be detected in time, thereby avoiding damage to the battery caused by excessively high or low temperatures. Once the current temperature is obtained, the system will compare it with the preset target temperature. The preset target temperature is usually based on the optimal operating temperature range of the battery (usually between 20-35°C). If the current temperature is lower or higher than the target temperature, the system needs to calculate the difference △T between the current temperature and the target temperature, that is, the temperature difference.

[0047] Step S1113, determining the battery power consumption based on the current temperature and the difference.

[0048] The battery power consumption refers to the battery power consumed during the use of the battery.

[0049] Specifically, the BMS can calculate the battery power consumption required to adjust the battery temperature based on the battery's specific heat capacity (C), mass (M) and temperature difference (△T). This can be calculated based on the formula (C×M×△T) / η=battery power consumption, where C is the battery's specific heat capacity, M is the battery's mass, △T is the difference between the current temperature and the preset target temperature, and η is the battery's thermal efficiency factor, which is used to indicate the efficiency of thermal energy conversion, usually between 0.7-0.8. This factor takes into account thermal energy losses, such as energy losses that may occur during battery heating or cooling.

[0050] The battery power consumption required for battery temperature control operation is calculated by the above formula. This value reflects the battery power consumed to adjust the battery temperature. If the temperature difference is large, more power is required to heat or cool the battery.

[0051] Step S1115: determining the average value of the driving power consumption in the specified time period as the first driving power consumption.

[0052] The first driving power consumption refers to the driving power consumption consumed by the vehicle during driving.

[0053] Specifically, driving power consumption is affected by many factors, such as driving speed, driving habits, road conditions, vehicle load, weather conditions, etc. In order to determine the first driving power consumption, the BMS needs to calculate the average driving power consumption in a specified time period (such as the past week or month) based on historical data, and determine the calculated average driving power consumption as the first driving power consumption. For example, the power consumption of a vehicle may vary when driving under different environmental conditions. Assuming that the average driving power consumption in the past week is 30kWh, the first driving power consumption is 30kWh.

[0054] Step S1117, determining a first target power consumption that matches the type of the start temperature control instruction according to the battery power consumption and the first driving power consumption.

[0055] Specifically, the role of the first target power consumption is to provide a benchmark for starting the temperature control adjustment operation when the temperature control command is actively started, ensuring that the battery has sufficient power. By adding the battery power consumption to the first driving power consumption, a safety margin can be calculated, which is the total power required by the battery under normal driving and temperature control operations. Ensure that even under adverse conditions (such as extreme temperature changes or long-term temperature control requirements), the battery still has enough power to complete fast charging and avoid insufficient power due to temperature control operations. It should be noted that in the absence of any specific statistical data, the initial value of the system defaults to 20%, which assumes that at least 20% of the power is required to meet the needs of driving and temperature control.

[0056] This embodiment monitors the battery temperature in real time and calculates the temperature difference to determine the battery power consumption required during use. By combining historical driving data to predict energy demand, it is possible to more accurately estimate the battery energy consumption during temperature control and driving, thereby determining a safety margin to ensure that even in the worst case, the battery has enough power to complete the fast charging process while maintaining the health of the battery and extending its life.

[0057] Figure 4 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 4 In the case where the type of the start temperature control instruction is a passive start temperature control instruction, the process of determining the target power consumption matching the type of the start temperature control instruction may include the following steps: Step S1131, obtaining the current temperature of the current battery, and determining the difference between the current temperature and a preset target temperature.

[0058] Specifically, in the case of passively starting the temperature control instruction, for example, when the navigation signal points to the fast charging station, the system will automatically request to start the active temperature control of the battery. When the user uses the map navigation to go to the fast charging station, the central control system will prompt the user whether the battery temperature control is required. If the user does not make a choice, the temperature control is started by default to go to the fast charging station. If the user only stops for a short rest, you can choose to cancel the temperature control. When the system performs these operations, the BMS monitors the current temperature of the battery in real time through the built-in temperature sensor. These temperature sensors can provide accurate battery cell temperature or battery pack temperature, which is critical to the safety and performance of the battery. By obtaining the current temperature of the battery, any temperature anomalies can be detected in time, thereby avoiding damage to the battery caused by excessively high or low temperatures. Once the current temperature is obtained, the system will compare it with the preset target temperature. The preset target temperature is usually based on the optimal operating temperature range of the battery (usually between 20-35°C). If the current temperature is lower or higher than the target temperature, the system needs to calculate the difference ΔT between the current temperature and the target temperature, that is, the temperature difference.

[0059] Step S1133, determining the battery power consumption based on the current temperature and the difference.

[0060] The battery power consumption refers to the battery power consumed during the use of the battery.

[0061] Specifically, the BMS can calculate the battery power consumption required to adjust the battery temperature based on the battery's specific heat capacity (C), mass (M) and temperature difference (△T). This can be calculated based on the formula (C×M×△T) / η=battery power consumption, where C is the battery's specific heat capacity, M is the battery's mass, △T is the difference between the current temperature and the preset target temperature, and η is the battery's thermal efficiency factor, which is used to indicate the efficiency of thermal energy conversion, usually between 0.7-0.8. This factor takes into account thermal energy losses, such as energy losses that may occur during battery heating or cooling.

[0062] The battery power consumption required for battery temperature control operation is calculated by the above formula. This value reflects the battery power consumed to adjust the battery temperature. If the temperature difference is large, more power is required to heat or cool the battery.

[0063] Step S1135, determining the second driving power consumption based on the remaining time to reach the fast charging station and the average discharge power of the battery.

[0064] Among them, the second driving power consumption refers to the power consumption required for the vehicle to travel during the process of navigating to the fast charging station.

[0065] Specifically, according to the remaining time to reach the fast charging station provided by the navigation system and the average discharge power of the battery in the period before driving, the power consumption in the remaining driving time is calculated. The average discharge power in the first 30 minutes is usually used for calculation. With these two parameters, the required driving power consumption of the vehicle in the remaining driving time can be estimated. The calculation formula can be simplified as: The second driving power consumption (kilowatt-hour, kWh) = remaining driving time (hours) × average discharge power (kilowatt, kW). It should be noted that in the absence of any specific statistical data, the initial value of the system defaults to 20%, which assumes that at least 20% of the power is required to meet the needs of driving and temperature control.

[0066] Step S1137, determining a second target power consumption that matches the type of the start temperature control instruction according to the battery power consumption and the second driving power consumption.

[0067] Specifically, the second target power consumption is used to provide a benchmark for starting the temperature control adjustment operation in the case of a passive start temperature control command, ensuring that the battery has sufficient power. By adding the battery power consumption to the second driving power consumption, a safety margin can be calculated, which is the total power required by the battery under normal driving and temperature control operation. This ensures that even under adverse conditions (such as extreme temperature changes or long-term temperature control requirements), the battery still has enough power to complete fast charging and avoid insufficient power due to temperature control operations.

[0068] This embodiment can monitor the temperature status of the battery in real time by obtaining the current battery temperature and comparing it with the difference of the target temperature, and provide a basis for temperature control operation to avoid overheating or overcooling of the battery, thereby extending the service life. Based on the temperature difference, the battery energy required for temperature control can also be accurately calculated to ensure the efficiency of temperature control operation and the rational use of battery energy, avoiding unnecessary power consumption. At the same time, combined with the remaining driving time and the average discharge power of the battery, the power demand of the vehicle before arriving at the charging station can be predicted, thereby determining a safety boundary to ensure that even in the worst case, the battery has enough power to complete the fast charging process, while maintaining the health of the battery and extending its life.

[0069] Figure 5 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 5 , the process may include the following steps: Step S41, in response to the battery remaining power being greater than or equal to a preset remaining power threshold, sending a request to start a battery temperature control operation to a thermal management system.

[0070] Among them, the remaining power threshold refers to the minimum limit of the remaining battery power, which is usually set to 5%. This is to ensure that when the remaining battery power is too low, too much energy will not be consumed for temperature control, thereby avoiding affecting the normal use of the battery.

[0071] Specifically, when the BMS detects that the remaining battery power is greater than or equal to a remaining power threshold, it indicates that the current battery still has enough power for temperature control operation, and will not affect the normal driving of the vehicle or the protection of the battery. After the remaining battery power meets the remaining power threshold condition, the BMS sends a request to start the battery temperature control operation to the TMS so that the TMS can adjust the battery temperature to the optimal operating range.

[0072] Step S43, in response to the battery remaining power being less than a preset remaining power threshold, sending a battery temperature control stop operation request to the thermal management system, so that the thermal management system stops temperature regulation of the current battery according to the battery temperature control stop operation request.

[0073] Specifically, when the BMS detects that the remaining battery power is less than the preset remaining power threshold, it means that the remaining battery power is already in a critical state. Continuing the temperature control operation may accelerate power consumption, affect the vehicle's endurance, and may even cause the battery to be unable to maintain sufficient power to complete the journey. To protect the battery, the BMS sends a request to stop the battery temperature control operation to the TMS, requiring the TMS to immediately stop adjusting the battery temperature. This can avoid continuing to consume battery power for temperature control, thereby ensuring that the vehicle has enough power for normal driving. The TMS then stops adjusting the battery temperature.

[0074] In addition, each time the vehicle is powered off (turned off), the temperature control function is turned off by default. This is to prevent the temperature control operation from continuing to run and consuming battery power when the vehicle is not in use (i.e. "power off" state). Therefore, when the battery power is too low, stopping the temperature control operation is a protection mechanism for the battery, avoiding excessive power consumption by the temperature control operation when the battery power is low and affecting the remaining battery power, ensuring that the battery is not over-discharged and protecting the long-term health of the battery.

[0075] This embodiment can intelligently control the temperature control operation according to the remaining battery power, so as to achieve the purpose of improving energy efficiency, extending battery life and optimizing battery use. During the execution of the temperature control operation, the current remaining battery power will be monitored. When the remaining battery power is greater than or equal to the remaining power threshold, the temperature control operation will be controlled to execute normally. When the remaining battery power is lower than the remaining power threshold, a request to stop the battery temperature control operation will be sent to the thermal management system to avoid unnecessary power consumption, extend the vehicle's cruising range, and protect the battery from over-discharge.

[0076] Figure 6 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 6 , the process may include the following steps: Step S711, when the vehicle controller receives the instruction to exit navigation to the fast charging station, it obtains the last charging time difference, and after the charging time difference, sends a request to stop battery temperature control to the battery management system; wherein the charging time difference represents the time interval from getting off the vehicle to starting charging.

[0077] Specifically, after receiving the instruction to exit navigation to the fast charging station, the VCU will obtain the most recent charging time difference, which is the time interval from the user getting off the car to the start of charging. The charging time difference is to determine a suitable time delay to ensure that the battery reaches the optimal temperature condition before arriving at the charging station and starting charging. Therefore, after the charging time difference, the VCU will send a request to stop temperature control to the BMS. This means that determining the time to stop the temperature control operation based on the actual charging time difference can avoid the battery temperature not meeting the standard due to stopping the temperature control too early, and can also avoid energy waste caused by stopping the temperature control too late.

[0078] Step S713 : the battery management system sends a request to stop the battery temperature control operation to the thermal management system according to the received request to stop the battery temperature control regulation.

[0079] Specifically, after receiving the request to stop battery temperature control regulation sent by the VCU, the BMS will process the request, and the BMS will send a request to stop the battery temperature control operation to the TMS.

[0080] Step S715 : the thermal management system stops temperature regulation of the current battery according to the request to stop the battery temperature control operation.

[0081] Specifically, once the TMS receives the request to stop the battery temperature control operation sent by the BMS, the TMS will stop the battery temperature adjustment operation according to the current battery temperature, and both the heating and cooling processes will end. This operation means that the battery will no longer perform additional temperature control adjustments during the subsequent charging process.

[0082] The vehicle controller of this embodiment optimizes the timing of battery temperature control by obtaining the time difference between the exit navigation to the fast charging station instruction and the last charging time, thereby avoiding unnecessary energy waste. The precise coordination between the battery management system BMS and the thermal management system TMS ensures the accurate execution of temperature control operations and avoids system conflicts and redundant control. Furthermore, when the temperature control operation is stopped, the battery remains within the optimal charging temperature range, which improves charging efficiency, reduces battery loss, and extends battery life.

[0083] Figure 7 The process of an embodiment of the temperature control method for fast charging of an electric vehicle provided in the embodiment of the present application Figure 7, the process may include the following steps: Step S731, when the vehicle controller receives the stop temperature control instruction, it sends a request to stop battery temperature control adjustment to the battery management system; wherein the stop temperature control instruction includes an active stop temperature control instruction actively triggered by the user and a passive stop temperature control instruction passively triggered by the user, and the priority of the active stop temperature control instruction is higher than the priority of the passive stop temperature control instruction; Step S733, the battery management system sends a request to stop the battery temperature control operation to the thermal management system according to the received request to stop the battery temperature control adjustment; Step S735 : the thermal management system stops temperature regulation of the current battery according to the request to stop the battery temperature control operation.

[0084] Among them, the active temperature control stop command refers to the user actively triggering the command through manual means such as central control switch, voice control, etc. This command directly reflects the user's needs or wishes, requiring the system to stop temperature control, and has the highest priority. For example, when the user feels that the battery has reached the ideal temperature, or wants to stop temperature control at the end of charging, the user will directly issue the command. The passive temperature control stop command refers to the system being triggered according to external environment or conditions, such as charging is completed, the battery is too low to shut down, or the navigation ends. Although the user did not intervene directly, this situation still represents the stop of temperature control. The priority is relatively low. For example, the system can automatically trigger the command when the user's vehicle reaches the destination or the navigation system ends.

[0085] Specifically, after the VCU receives the stop temperature control instruction, the VCU sends a stop battery temperature control adjustment request to the BMS. After the BMS receives the stop battery temperature control adjustment request sent by the VCU, the BMS sends a stop battery temperature control operation request to the TMS. After the TMS receives the stop battery temperature control operation request sent by the BMS, the TMS stops temperature adjustment for the current battery, that is, stops heating or cooling operations. Please refer to Table 1 for the VCU signal output table to the BMS in different scenarios.

[0086] Table 1

[0087] After receiving the instruction to stop temperature control, the vehicle controller of this embodiment quickly passes the request to the battery management system, and the battery management system further sends a request to stop the battery temperature control operation to the thermal management system to ensure that the system can respond to the temperature control stop demand in real time and avoid unnecessary heating or cooling operations, thereby reducing energy waste. At the same time, through a clear instruction priority mechanism, the system can give priority to temperature control stop requests according to user needs, ensure that the battery is always in a safe temperature range, and improve the battery life. In addition, the intelligent control logic makes the temperature control operation more sophisticated and automated, reduces the complexity of user operations, and improves the overall user experience. Ultimately, the system achieves efficient energy management and precise temperature control adjustment, ensuring the safety of the battery, energy utilization efficiency and stability of vehicle operation.

[0088] Accordingly, please refer to Figure 8 The block diagram of a temperature control engine provided in an embodiment of the present application includes a vehicle controller 101, a battery management system 103 and a thermal management system 105; wherein, The vehicle controller 101 is used to obtain the remaining battery power of the current battery when receiving the start temperature control instruction, and send a start battery temperature control adjustment request to the battery management system based on the type of the start temperature control instruction and the remaining battery power; wherein the start temperature control instruction includes an active start temperature control instruction actively triggered by a user and a passive start temperature control instruction passively triggered by a user, and the priority of the active start temperature control instruction is higher than the priority of the passive start temperature control instruction; The battery management system 103 is used to receive a start-up battery temperature control adjustment request, and when it is determined that the current battery needs thermal management adjustment, send a start-up battery temperature control operation request to the thermal management system; The thermal management system 105 is used to adjust the temperature of the current battery according to the request to start the battery temperature control operation, so that the temperature of the current battery meets the preset target temperature.

[0089] In some optional implementations, the vehicle controller 101 includes: Determine a target power consumption that matches the type of the startup temperature control instruction, and send a startup battery temperature control adjustment request to the battery management system when the remaining battery power is greater than or equal to the target power consumption.

[0090] In some optional implementations, when the type of the start temperature control instruction is an active start temperature control instruction, determining a target power consumption matching the type of the start temperature control instruction includes: Obtain the current temperature of the current battery and determine the difference between the current temperature and a preset target temperature; Based on the current temperature and the difference, determine the battery consumption; The average value of the driving power consumption in the specified time period is determined as the first driving power consumption; A first target power consumption matching the type of the startup temperature control instruction is determined according to the battery power consumption and the first driving power consumption.

[0091] In some optional implementations, when the type of the start temperature control instruction is a passive start temperature control instruction, determining a target power consumption matching the type of the start temperature control instruction includes: Obtain the current temperature of the current battery and determine the difference between the current temperature and a preset target temperature; Based on the current temperature and the difference, determine the battery consumption; Determine the power consumption of the second trip based on the remaining time to reach the fast charging station and the average discharge power of the battery; A second target power consumption matching the type of the startup temperature control instruction is determined according to the battery power consumption and the second driving power consumption.

[0092] In some optional implementations, after sending the request to start the battery temperature control operation to the thermal management system, the method further includes: In response to the battery remaining power being greater than or equal to a preset remaining power threshold, sending a request to start a battery temperature control operation to the thermal management system; In response to the battery remaining power being less than a preset remaining power threshold, a battery temperature control stop operation request is sent to the thermal management system, so that the thermal management system stops temperature regulation of the current battery according to the battery temperature control stop operation request.

[0093] In some optional embodiments, the temperature control engine further includes: When the vehicle controller receives the instruction to exit navigation to the fast charging station, it obtains the last charging time difference, and sends a request to stop battery temperature control to the battery management system after the charging time difference has passed; wherein the charging time difference represents the time interval from getting off the vehicle to starting charging; The battery management system sends a request to stop the battery temperature control operation to the thermal management system according to the received request to stop the battery temperature control adjustment; The thermal management system stops temperature regulation of the current battery according to the request to stop the battery temperature control operation.

[0094] In some optional embodiments, the temperature control engine further includes: When the vehicle controller receives the stop temperature control instruction, it sends a request to stop battery temperature control adjustment to the battery management system; wherein the stop temperature control instruction includes an active stop temperature control instruction triggered by the user and a passive stop temperature control instruction triggered by the user, and the priority of the active stop temperature control instruction is higher than the priority of the passive stop temperature control instruction; The battery management system sends a request to stop the battery temperature control operation to the thermal management system according to the received request to stop the battery temperature control adjustment; The thermal management system stops temperature regulation of the current battery according to the request to stop the battery temperature control operation.

[0095] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0096] See also Fig. 9 , Fig. 9 A schematic diagram of the structure of a computer device provided in an embodiment of the present application is shown in FIG. Fig. 9 As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Fig. 9 A processor 10 is taken as an example.

[0097] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0098] The memory 20 stores instructions executable by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0099] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0100] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0101] The computer device further comprises a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0102] The embodiment of the present application also provides a computer-readable storage medium. The above method according to the embodiment of the present application can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0103] The methods and temperature control engines described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

[0104] For the convenience of description, the above device is described in various units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0105] Those skilled in the art should understand that the embodiments of the present application can be provided as methods or temperature control engines. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0106] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices, and temperature control engines according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the process in the flowchart. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0107] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0108] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0109] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0110] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the temperature control engine embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0111] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0112] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A temperature control method for fast charging of electric vehicles, characterized in that: The method is applied to a temperature control engine, which includes a vehicle controller, a battery management system and a thermal management system; wherein, When the vehicle controller receives the start temperature control instruction, it obtains the remaining battery power of the current battery, and sends a start battery temperature control adjustment request to the battery management system based on the type of the start temperature control instruction and the remaining battery power; wherein the start temperature control instruction includes an active start temperature control instruction actively triggered by a user and a passive start temperature control instruction passively triggered by a user, and the priority of the active start temperature control instruction is higher than the priority of the passive start temperature control instruction; The battery management system receives the start-up battery temperature control adjustment request, and sends a start-up battery temperature control operation request to the thermal management system when determining that the current battery requires thermal management adjustment; The thermal management system adjusts the temperature of the current battery according to the startup battery temperature control operation request so that the temperature of the current battery meets a preset target temperature.

2. The method according to claim 1, characterized in that The sending a startup battery temperature control adjustment request to the battery management system based on the type of the startup temperature control instruction and the remaining battery power includes: Determine a target power consumption that matches the type of the startup temperature control instruction, and send the startup battery temperature control adjustment request to the battery management system when the remaining battery power is greater than or equal to the target power consumption.

3. The method according to claim 2, characterized in that In a case where the type of the start temperature control instruction is the active start temperature control instruction, determining a target power consumption matching the type of the start temperature control instruction includes: Acquiring a current temperature of the current battery, and determining a difference between the current temperature and the preset target temperature; determining battery power consumption based on the current temperature and the difference; The average value of the driving power consumption in the specified time period is determined as the first driving power consumption; A first target power consumption matching the type of the startup temperature control instruction is determined according to the battery power consumption and the first driving power consumption.

4. The method according to claim 2, characterized in that: In a case where the type of the startup temperature control instruction is the passive startup temperature control instruction, determining a target power consumption matching the type of the startup temperature control instruction includes: Acquiring a current temperature of the current battery, and determining a difference between the current temperature and the preset target temperature; determining battery power consumption based on the current temperature and the difference; Determine the power consumption of the second trip based on the remaining time to reach the fast charging station and the average discharge power of the battery; A second target power consumption matching the type of the startup temperature control instruction is determined according to the battery power consumption and the second driving power consumption.

5. The method according to claim 1, characterized in that After sending a request to start the battery temperature control operation to the thermal management system, the method further includes: In response to the remaining power of the battery being greater than or equal to a preset remaining power threshold, sending the start-up battery temperature control operation request to the thermal management system; In response to the remaining power of the battery being less than the preset remaining power threshold, a battery temperature control stop operation request is sent to the thermal management system, so that the thermal management system stops temperature regulation of the current battery according to the battery temperature control stop operation request.

6. The method according to claim 1, characterized in that The method further comprises: When the vehicle controller receives the instruction to exit navigation to the fast charging station, it obtains the last charging time difference, and after the charging time difference, sends a request to stop battery temperature control adjustment to the battery management system; wherein the charging time difference represents the time interval from getting off the vehicle to starting charging; The battery management system sends a request to stop the battery temperature control operation to the thermal management system according to the received request to stop the battery temperature control adjustment; The thermal management system stops temperature regulation of the current battery according to the request to stop the battery temperature control operation.

7. The method according to claim 1, characterized in that The method further comprises: When the vehicle controller receives the stop temperature control instruction, it sends a request to stop battery temperature control regulation to the battery management system; wherein the stop temperature control instruction includes an active stop temperature control instruction actively triggered by a user and a passive stop temperature control instruction passively triggered by a user, and the priority of the active stop temperature control instruction is higher than the priority of the passive stop temperature control instruction; the battery management system sends a stop battery temperature control operation request to the thermal management system according to the received stop battery temperature control regulation request; The thermal management system stops temperature regulation of the current battery according to the request to stop the battery temperature control operation.

8. A temperature-controlled engine, characterized in that: The temperature control engine includes a vehicle controller, a battery management system and a thermal management system; wherein, The vehicle controller is used to obtain the remaining battery power of the current battery when receiving the start-up temperature control instruction, and send a start-up battery temperature control adjustment request to the battery management system based on the type of the start-up temperature control instruction and the remaining battery power; wherein the start-up temperature control instruction includes an active start-up temperature control instruction actively triggered by a user and a passive start-up temperature control instruction passively triggered by a user, and the priority of the active start-up temperature control instruction is higher than the priority of the passive start-up temperature control instruction; the battery management system is used to receive the start-up battery temperature control adjustment request, and send a start-up battery temperature control operation request to the thermal management system when determining that the current battery requires thermal management adjustment; The thermal management system is used to adjust the temperature of the current battery according to the startup battery temperature control operation request so that the temperature of the current battery meets a preset target temperature.

9. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the temperature control method for fast charging of an electric vehicle according to any one of claims 1 to 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the temperature control method for fast charging of an electric vehicle according to any one of claims 1 to 7.

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