Automobile thermal management system

Abstract

The invention relates to the technical field of new energy automobiles, and provides an automobile thermal management system which comprises a power management subsystem, an air conditioner management subsystem and a driving management subsystem. The power management subsystem is used for monitoring temperature information of a power module and adjusting transmission heat output by the power module through a heat dissipation channel according to the temperature information, and the power module comprises a battery pack, a motor and a motor controller. And the air conditioner management subsystem is used for acquiring the transmission heat and adjusting the working mode of the cabin air conditioner according to the transmission heat. And the driving management subsystem is used for acquiring the target temperature data of the power management subsystem and adjusting the working mode of a driving element according to the target temperature data. According to the technical scheme provided by one or more embodiments, the safety of the new energy automobile power system can be guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of new energy vehicles, and in particular to an automobile thermal management system. Background Art

[0002] As the global energy crisis and environmental pollution become increasingly severe, new energy vehicles, with their low-carbon, environmentally friendly, energy-saving and high-efficiency characteristics, are gradually becoming an important direction for the future development of the automotive industry.

[0003] In the process of performance improvement and popularization of new energy vehicles, they also face many technical challenges, among which thermal management is particularly prominent. The thermal management system of a car can be responsible for regulating the temperature of the entire vehicle and ensuring that all key components work within a suitable temperature range, thereby ensuring vehicle performance, extending service life and improving passenger comfort.

[0004] However, the thermal management system of traditional fuel vehicles mainly focuses on engine cooling, while the thermal management requirements of new energy vehicles are more complex due to changes in the power system. Summary of the invention

[0005] In view of this, one or more embodiments of the present disclosure provide an automotive thermal management system that can ensure the safety of a new energy vehicle power system.

[0006] The present disclosure provides an automobile thermal management system, which includes a power management subsystem, an air-conditioning management subsystem and a drive management subsystem; the power management subsystem is used to monitor the temperature information of a power module, and adjust the transmission heat output by the power module through a heat dissipation channel according to the temperature information, and the power module includes a battery pack, a motor and a motor controller; the air-conditioning management subsystem is used to obtain the transmission heat and adjust the working mode of the cabin air-conditioning according to the transmission heat; the drive management subsystem is used to obtain target temperature data of the power management subsystem, and adjust the working mode of the drive element according to the target temperature data.

[0007] In one embodiment, the power management subsystem includes a temperature sensor, a control module, the power module, and the heat dissipation channel; the temperature sensor is arranged in the heat dissipation area of ​​the power module, for monitoring the temperature information of the power module and sending the temperature information to the control module; the control module is used to determine the current temperature value according to the temperature information, and adjust the heat dissipation mode of the power module based on the current temperature value; the power module uses a liquid cooling plate and a cooling fan to dissipate heat to form the transferred heat; the heat dissipation channel is used to collect and output the transferred heat.

[0008] In one embodiment, adjusting the heat dissipation mode of the power module based on the current temperature value includes: if the current temperature value is higher than a high temperature threshold, adjusting the speed of the cooling fan to a first speed, and adjusting the flow rate of the coolant in the liquid cooling plate to a first flow rate; if the current temperature value is lower than a low temperature threshold, adjusting the speed of the cooling fan to a second speed, restoring the flow rate of the coolant to an initial flow rate, and heating the coolant.

[0009] In one embodiment, the control module is further used to predict the temperature trend according to the temperature information, and adjust the heat dissipation mode of the power module based on the temperature trend.

[0010] In one embodiment, adjusting the heat dissipation mode of the power module based on the temperature trend includes: if the temperature trend indicates that the temperature of the power module continues to rise during a first time period, adjusting the speed of the cooling fan to a third speed, and adjusting the flow rate of the coolant in the liquid cooling plate to a second flow rate; if the temperature trend indicates that the temperature of the power module continues to drop during a second time period, adjusting the speed of the cooling fan to a fourth speed, and adjusting the flow rate of the coolant to the third flow rate.

[0011] In one embodiment, the power management subsystem further includes heat dissipation fins, which are arranged in a heat dissipation region of the power module to increase a heat dissipation area of ​​the power module.

[0012] In one embodiment, a temperature averaging plate or a temperature averaging tube is disposed inside the heat dissipation channel for conducting the transfer heat.

[0013] In one embodiment, the acquiring the transferred heat and adjusting the operating mode of the cabin air conditioner according to the transferred heat includes: when the cabin temperature is lower than a first preset temperature, detecting the channel air temperature of the heat dissipation channel; if the channel air temperature is higher than the cabin temperature, acquiring the transferred heat from the heat dissipation channel to increase the cabin temperature; if the channel air temperature is lower than the cabin temperature, or the increased cabin temperature is still lower than the first preset temperature, turning on the heating mode of the cabin air conditioner.

[0014] In one embodiment, the acquiring the transferred heat and adjusting the operating mode of the cabin air conditioner according to the transferred heat includes: when the cabin temperature is greater than a second preset temperature, detecting the channel air temperature of the heat dissipation channel; if the channel air temperature is lower than the cabin temperature, acquiring the transferred heat from the heat dissipation channel to lower the cabin temperature; if the channel air temperature is higher than the cabin temperature, or the cabin temperature after being lowered is still greater than the second preset temperature, turning on the cooling mode of the cabin air conditioner.

[0015] In one embodiment, adjusting the working mode of the driving element according to the target temperature data includes: determining whether the target temperature data is greater than a warning value; if the target temperature data is greater than the warning value, reducing the power of the driving element.

[0016] The technical solution provided by one or more embodiments of the present disclosure realizes the comprehensive optimization of the thermal efficiency of the whole vehicle by integrating the three subsystems of the power management subsystem, the air conditioning management subsystem and the drive management subsystem. Among them, the power management subsystem can focus on the operating temperature of the power modules of new energy vehicles such as battery packs, motors and motor controllers, and can adjust the operating temperature of the power modules to a reasonable range, thereby ensuring the safety of the power system of new energy vehicles. In addition, the air conditioning management subsystem can effectively utilize the output heat of the power management subsystem and save energy. The drive management subsystem can obtain the target temperature data of the power management subsystem, assist in adjusting the working mode of the drive element, and protect the drive element more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The features and advantages of the embodiments of the present disclosure will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the present disclosure in any way. In the accompanying drawings:

[0018] Figure 1 A schematic diagram of the system composition of an automobile thermal management system in one embodiment of the present disclosure is shown;

[0019] Figure 2 A schematic diagram of a vehicle including a vehicle thermal management system in one embodiment of the present disclosure is shown;

[0020] Figure 3 A schematic diagram showing the functional composition of an automotive thermal management system in one embodiment of the present disclosure is shown;

[0021] Figure 4 A schematic diagram of the working process of an automobile thermal management system in one embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0023] See also Figure 1An automotive thermal management system provided by one embodiment of the present disclosure may include a power management subsystem, an air conditioning management subsystem, and a drive management subsystem.

[0024] The power management subsystem can be used to monitor the temperature information of the power module and adjust the transmission heat output by the power module through the heat dissipation channel according to the temperature information. The power module includes a battery pack, a motor and a motor controller.

[0025] The air conditioning management subsystem can be used to obtain the transmitted heat and adjust the working mode of the cabin air conditioning according to the transmitted heat.

[0026] The drive management subsystem can be used to obtain the target temperature data of the power management subsystem and adjust the working mode of the drive element according to the target temperature data.

[0027] In this embodiment, the power management subsystem may include a temperature sensor, a heat dissipation channel, a heat dissipation fin, an intelligent control module, a battery pack, a motor, and a motor controller. The power management subsystem is mainly used to ensure that the operating temperature of the power module is within a reasonable range, and to avoid the operating temperature of the power module being too high or too low, thereby affecting the safety of the new energy vehicle power system.

[0028] In this embodiment, the thermal management of the power system of new energy vehicles is one of the key links in the thermal management of the whole vehicle. For pure electric vehicles, the power battery is the main energy source, and its performance and safety are directly affected by temperature. The power battery will generate a lot of heat during the charging and discharging process. If the heat cannot be dissipated in time, the battery temperature will rise, which will affect the battery performance, shorten the cycle life, and may even cause safety problems such as thermal runaway. Therefore, effective thermal management of power batteries is a necessary means to ensure their performance, safety, etc.

[0029] In this embodiment, the air conditioning management subsystem may include a cabin temperature sensor and a humidity sensor, which are mainly used to detect cabin temperature and humidity and determine the working mode of the cabin air conditioning. The air conditioning management subsystem may obtain the transmission heat output by the heat dissipation channel, and use the transmission heat to adjust the cabin temperature before determining the working mode of the cabin air conditioning. In this way, energy can be saved for new energy vehicles.

[0030] In this embodiment, the drive management subsystem can adjust the working mode of various drive components in the new energy vehicle to prevent these drive components from being in a high temperature state for a long time, thereby preventing the performance of the drive components from being reduced or the life of the drive components from being shortened. The drive components include but are not limited to inverters, voltage converters, vehicle controllers, and power semiconductor devices.

[0031] In some embodiments, the power management subsystem includes a temperature sensor, a control module, the power module, and the heat dissipation channel; the temperature sensor is arranged in the heat dissipation area of ​​the power module, for monitoring the temperature information of the power module and sending the temperature information to the control module; the control module is used to determine the current temperature value according to the temperature information, and adjust the heat dissipation mode of the power module based on the current temperature value; the power module uses a liquid cooling plate and a cooling fan to dissipate heat to form the transferred heat; the heat dissipation channel is used to collect and output the transferred heat.

[0032] Specifically, temperature sensors can be respectively arranged in the key heat dissipation areas of the battery pack, motor and motor controller to monitor the temperature changes of each component in real time. As the energy supply unit of new energy vehicles, the battery pack can be equipped with a liquid cooling plate inside or outside. The coolant circulates in the liquid cooling plate, which can effectively take away the heat generated by the battery during the charging and discharging process, ensuring that the battery pack operates within a safe temperature range. As the power output and control unit of new energy vehicles, the heat dissipation areas of the motor and motor controller can be connected to the heat dissipation channel. The heat dissipation channel can optimize the heat dissipation path of the power management subsystem and improve the heat dissipation efficiency of the power management subsystem through reasonable layout design and size design.

[0033] Furthermore, in order to make the heat dissipation channel more effectively guide the flow of coolant or air, thereby improving the heat dissipation efficiency, the heat dissipation channel can be optimized. For example, the shape, size, number or arrangement of the heat dissipation channel can be changed, and more efficient heat dissipation materials can be used. In new energy vehicles, optimizing the heat dissipation channel can significantly improve the heat dissipation performance of the motor and motor controller, thereby extending its service life and improving reliability.

[0034] It should be noted that the entire power module can be assisted in heat dissipation by a cooling fan, and the generated transferred heat can be connected to the heat dissipation channel.

[0035] In some embodiments, adjusting the heat dissipation mode of the power module based on the current temperature value includes: if the current temperature value is higher than a high temperature threshold, adjusting the speed of the cooling fan to a first speed, and adjusting the flow rate of the coolant in the liquid cooling plate to a first flow rate; if the current temperature value is lower than a low temperature threshold, adjusting the speed of the cooling fan to a second speed, restoring the flow rate of the coolant to an initial flow rate, and heating the coolant.

[0036] In a practical application example, if the temperature sensor detects that the current overall temperature of the power module is higher than the preset high temperature threshold (for example, 60°C), the power management subsystem can start the cooling strategy. For example, the speed of the cooling fan is adjusted to 3000RPM and the coolant flow rate is increased to 8 liters per minute.

[0037] In a practical application example, if the temperature sensor detects that the current overall temperature of the power module is lower than the preset low temperature threshold (e.g., 0°C), the power management subsystem can start the heating strategy. For example, the speed of the cooling fan is adjusted to 500RPM, the coolant flow is restored to the initial level, and the coolant is heated.

[0038] In some embodiments, the control module is further used to predict a temperature trend according to the temperature information, and adjust a heat dissipation mode of the power module based on the temperature trend.

[0039] Specifically, the temperature sensor can monitor the temperature information of the power module, update the temperature data in real time, and continuously monitor the temperature status of each component. Then, the intelligent algorithm can be used to analyze the historical temperature data within a certain period and predict the future temperature trend. According to the predicted results of the temperature trend, the heat dissipation strategy of the power module can be adjusted in advance to optimize the energy consumption and performance of the power management subsystem.

[0040] After adjusting the heat dissipation strategy, the temperature sensor continuously monitors the temperature data of the power module to ensure that the temperature of the power module remains within the optimal operating range. If the temperature of the power module still deviates from the normal range, the heat dissipation strategy is adjusted again according to the real-time monitored temperature data until the ideal temperature control effect is achieved.

[0041] It should be noted that intelligent algorithms (such as PID control, fuzzy logic control, model predictive control, etc.) are used to analyze the data monitored in real time by the temperature sensor to predict the temperature trend in the future. The prediction content may include the temperature change rate and temperature change direction.

[0042] In some embodiments, adjusting the heat dissipation mode of the power module based on the temperature trend includes: if the temperature trend indicates that the temperature of the power module continues to rise during a first time period, adjusting the speed of the cooling fan to a third speed, and adjusting the flow rate of the coolant in the liquid cooling plate to a second flow rate; if the temperature trend indicates that the temperature of the power module continues to drop during a second time period, adjusting the speed of the cooling fan to a fourth speed, and adjusting the flow rate of the coolant to the third flow rate.

[0043] In a practical application example, if the intelligent algorithm predicts that the temperature of the power module will continue to rise in the future (e.g., 5 minutes, 10 minutes, half an hour, etc.), and may exceed the normal operating temperature range of the power module, the following measures are taken: increase the speed of the cooling fan, for example, from the current 2000RPM to 2500RPM to increase the heat dissipation; increase the flow rate of the coolant, for example, from 5 liters per minute to 7 liters per minute, to take away the heat faster. In addition, if the power management subsystem is equipped with a temperature plate or a temperature tube, adjust its working state to improve the uniformity of temperature distribution.

[0044] In a practical application example, if the intelligent algorithm predicts that the temperature of the power module will continue to drop within a period of time in the future (e.g., 5 minutes, 10 minutes, half an hour, etc.), and may be lower than the normal operating temperature range of the power module, the following measures are taken: reduce the speed of the cooling fan, for example, from the current 2000RPM to 1500RPM to reduce the heat dissipation; reduce the flow rate of the coolant, for example, from 5 liters per minute to 3 liters per minute to slow down the heat loss. In addition, if the power management subsystem is equipped with a heating system, the heating function is started to maintain the power module working within a suitable temperature range.

[0045] In some embodiments, adjusting the heat dissipation mode of the power module based on the temperature trend includes: if the temperature trend indicates that the temperature of the power module increases during a third time period, and the rate of increase exceeds the first rate, adjusting the speed of the cooling fan to a fifth speed, and adjusting the flow rate of the coolant in the liquid cooling plate to a fourth flow rate; if the temperature trend indicates that the temperature of the power module decreases during a fourth time period, and the rate of decrease exceeds the second rate, adjusting the speed of the cooling fan to a sixth speed, and adjusting the flow rate of the coolant to the fifth flow rate.

[0046] In a practical application example, if the intelligent algorithm predicts that the rising rate of the power module exceeds the first rate (e.g., 1 degree Celsius per minute, 1.5 degrees Celsius per minute, 2 degrees Celsius per minute, etc.) within a period of time in the future (e.g., 5 minutes, 10 minutes, half an hour, etc.), and may exceed the normal operating temperature range of the power module, the following measures are taken: Increase the speed of the cooling fan, for example, from the current 2000RPM to 2800RPM to increase the heat dissipation; increase the flow rate of the coolant, for example, from 5 liters per minute to 7.5 liters per minute, to take away the heat faster. In addition, if the power management subsystem is equipped with a temperature plate or a temperature tube, adjust its working state to improve the uniformity of temperature distribution.

[0047] In a practical application example, if the intelligent algorithm predicts that the decline rate of the power module exceeds the second rate (e.g., 1 degree Celsius per minute, 1.5 degrees Celsius per minute, 2 degrees Celsius per minute, etc.) within a period of time in the future (e.g., 5 minutes, 10 minutes, half an hour, etc.), and may be lower than the normal operating temperature range of the power module, the following measures are taken: reduce the speed of the cooling fan, for example, from the current 2000RPM to 1000RPM to reduce heat dissipation; reduce the flow rate of the coolant, for example, from 5 liters per minute to 2 liters per minute to slow down heat loss. In addition, if the power management subsystem is equipped with a heating system, the heating function is started to maintain the power module working within a suitable temperature range.

[0048] In some embodiments, the power management subsystem further includes heat dissipation fins, which are disposed in a heat dissipation region of the power module to increase a heat dissipation area of ​​the power module.

[0049] Specifically, the heat sink fins are usually designed as metal sheets to improve the heat dissipation efficiency by increasing the surface area. On the motors and motor controllers of new energy vehicles, the heat sink fins can be directly installed or integrated into the heat dissipation system to dissipate heat more efficiently. The number, shape and arrangement of the heat sink fins will affect the heat dissipation effect and can be adjusted according to the actual application scenario, which is not limited here.

[0050] In some embodiments, a temperature averaging plate or a temperature averaging tube is disposed inside the heat dissipation channel to conduct the transfer heat.

[0051] Specifically, the temperature plate or temperature tube is a new type of efficient thermal conductive material that uses the phase change of the working medium to quickly transfer heat. They are usually designed as flat sheets or tubular structures, filled with condensate and capillary structures. When the heating element generates heat, the condensate inside the temperature plate or temperature tube evaporates due to the heat. Under the action of the pressure difference, the steam diffuses to the area with lower temperature, condenses into liquid again, and releases heat. This process is repeated continuously, which can achieve rapid conduction and dissipation of heat.

[0052] In some embodiments, the acquiring of the transferred heat and adjusting the operating mode of the cabin air conditioner according to the transferred heat include: when the cabin temperature is less than a first preset temperature, detecting the channel air temperature of the heat dissipation channel; if the channel air temperature is higher than the cabin temperature, acquiring the transferred heat from the heat dissipation channel to increase the cabin temperature; if the channel air temperature is lower than the cabin temperature, or the increased cabin temperature is still less than the first preset temperature, turning on the heating mode of the cabin air conditioner.

[0053] In some embodiments, the acquiring the transferred heat and adjusting the operating mode of the cabin air conditioner according to the transferred heat includes: when the cabin temperature is greater than a second preset temperature, detecting the channel air temperature of the heat dissipation channel; if the channel air temperature is lower than the cabin temperature, acquiring the transferred heat from the heat dissipation channel to lower the cabin temperature; if the channel air temperature is higher than the cabin temperature, or the cabin temperature after being lowered is still greater than the second preset temperature, turning on the cooling mode of the cabin air conditioner.

[0054] Specifically, in the present application, the air conditioning management subsystem can effectively utilize the output heat of the power management subsystem. The air conditioning management subsystem can obtain the air in the heat dissipation channel, balance the air in the heat dissipation channel with the cabin air, and then combine it with the conventional air conditioning working mode to save the energy consumption of the air conditioning management subsystem.

[0055] When the actual cabin temperature is lower than the user's preset temperature, the air conditioning management subsystem needs to further determine the air temperature in the heat dissipation channel. If the air temperature in the heat dissipation channel is higher than the actual cabin temperature, the air conditioning management subsystem will first introduce the hot air in the heat dissipation channel into the cabin to increase the temperature. When the cabin temperature is equal to the air temperature in the heat dissipation channel and still cannot meet the customer's preset temperature, the air conditioning management subsystem will turn on the heating device to further increase the cabin temperature.

[0056] When the actual cabin temperature is greater than the user's preset temperature, the air conditioning management subsystem needs to further determine the air temperature in the heat dissipation channel. If the air temperature in the heat dissipation channel is lower than the actual cabin temperature, the air conditioning management subsystem will first introduce the cold air (relatively) in the heat dissipation channel into the cabin to reduce the temperature. When the cabin temperature is equal to the air temperature in the heat dissipation channel and still cannot meet the customer's preset temperature, the air conditioning management subsystem will turn on the cooling device to further reduce the temperature.

[0057] In some embodiments, adjusting the working mode of the driving element according to the target temperature data includes: determining whether the target temperature data is greater than a warning value; if the target temperature data is greater than the warning value, reducing the power of the driving element.

[0058] Specifically, the drive management subsystem can obtain shared data from the power management subsystem to obtain the temperature data of the motor controller, that is, the target temperature data. Then, based on the target temperature data, the drive management subsystem can make a reference judgment to determine the temperature status of various types of drive electronic components in new energy vehicles. For example, if the power management subsystem learns that the current temperature of the motor controller has exceeded 60 degrees, it can indirectly indicate that the operating temperatures of various types of drive electronic components are relatively high. At this time, the drive electronic components must be protected, such as reducing the power of the inverter and reducing the current consumption on the voltage conversion link.

[0059] See also Figure 2 and Figure 3 The automotive thermal management system provided in one embodiment of the present disclosure can integrate three subsystems: power system thermal management, cabin air conditioning thermal management, and drive control thermal management, so as to optimize the thermal efficiency of the entire vehicle and improve the passenger comfort.

[0060] In this embodiment, the power system thermal management includes a temperature sensor 1, a power module 2, a heat dissipation channel 3, a heat dissipation fin 4, and an intelligent control system 5. The power module 2 may include a battery pack, a motor, and a motor controller.

[0061] Power system thermal management can be applied to pure electric vehicles and hybrid vehicles. For pure electric vehicles, power system thermal management mainly focuses on the temperature control of power batteries and their subsystems. Power batteries are the main energy source for new energy vehicles, and their normal operating temperature range is usually between 15 and 40°C. When the battery is working in a low temperature environment, the charge / discharge performance will deteriorate. When working in a high temperature environment, the cycle life of the battery will be shortened, and may even cause safety problems such as combustion and explosion due to thermal runaway. Therefore, effective thermal management of power batteries is a necessary means to ensure their performance and safety.

[0062] For hybrid vehicles, in addition to the power battery, the thermal management of the power system also needs to focus on the thermal management of the engine system. The thermal management method of this part is similar to that of traditional fuel vehicles, but may vary depending on the model and technology.

[0063] In this embodiment, the temperature sensors 1 can be precisely arranged in the key heat dissipation areas of the battery pack, the motor and the controller, such as the tabs of the battery pack, the windings of the motor and the vicinity of the power semiconductor module of the controller. These sensors can monitor the temperature changes of each component in real time and feed back the data to the intelligent control system 5.

[0064] As the "heart" of new energy vehicles, the battery pack can be equipped with cold plate liquid cooling technology inside or outside. The coolant circulates in the cold plate, which can effectively remove the heat generated by the battery during the charging and discharging process, ensuring that the battery pack operates within a safe temperature range.

[0065] The motor and controller serve as power output and control units, and their heat dissipation areas can be designed with heat dissipation fins 4 and / or heat dissipation channels 3. The heat dissipation fins 4 can increase the heat dissipation area, and the heat dissipation channels 3 can optimize the heat dissipation path and improve the heat dissipation efficiency.

[0066] The heat dissipation channel 3 is optimized to ensure that the heat can be discharged quickly and evenly. A temperature averaging plate or a temperature averaging tube can also be configured in the heat dissipation channel 3 to further improve the uniformity of temperature distribution and reduce the performance loss caused by the temperature gradient.

[0067] It should be noted that introducing a temperature averaging plate or a temperature averaging tube into the battery pack can transfer heat from the high-temperature area of ​​the battery pack to the low-temperature area, thereby achieving uniform temperature distribution in the battery pack and reducing performance loss caused by temperature gradient.

[0068] The heat dissipation fins 4 can be added to the heat dissipation area of ​​the motor and the controller to significantly improve the heat dissipation performance and reduce the temperature of the components of the motor and the controller.

[0069] In this embodiment, a coolant can be used as a heat transfer medium, and the coolant flows inside the liquid cooling plate to effectively remove heat through the contact between the cold plate and the heat dissipation component. This method has the characteristics of high thermal conductivity, adjustability and high heat dissipation efficiency.

[0070] In this embodiment, the intelligent control system 5 can receive real-time temperature data from the temperature sensor 1 and use advanced intelligent algorithms to accurately predict the temperature trend. According to the prediction results, the intelligent control system 5 can automatically adjust the heat dissipation strategy, such as adjusting the coolant flow rate, fan speed, etc., to achieve accurate temperature control. The intelligent control system 5 can also have continuous monitoring and feedback functions, and can update temperature data in real time to ensure that the thermal management system is always in the optimal working state.

[0071] In this embodiment, the cabin air conditioning thermal management includes a temperature sensor and a humidity sensor in the cabin. These sensors can monitor the temperature and humidity changes in the cabin in real time and provide an accurate adjustment basis for the air conditioning system.

[0072] The air-conditioning system can automatically adjust the output of cold and heat sources, air volume and wind direction according to the cabin temperature, humidity and comfort parameters set by the passengers to create a suitable cabin environment. In addition, the cabin air-conditioning thermal management can also have an air purification function, which can filter out particles and harmful gases in the air to provide passengers with a healthy cabin environment.

[0073] In this embodiment, the drive control thermal management includes temperature monitoring and heat dissipation design for the electronic components of the drive system (such as inverters, DC-DC converters, etc.). These electronic components will generate a lot of heat during operation, so effective heat dissipation design is required to ensure their normal operation.

[0074] Through the coordinated control of the intelligent control system 5, information sharing and coordinated control can be achieved between the power system thermal management, cabin air conditioning thermal management and drive control thermal management, further improving the thermal management efficiency of the entire vehicle.

[0075] It should be noted that multiple cooling loops of the automotive thermal management system can be combined into a large circulation loop to reduce system complexity and maintenance costs. At the same time, by optimizing the system layout and pipeline design, the energy consumption and noise of the automotive thermal management system can be reduced.

[0076] See also Figure 4 The automotive thermal management system provided by one embodiment of the present disclosure may have the following working process.

[0077] First, the new energy vehicle is started and the thermal management system is initialized.

[0078] Subsequently, the temperature of key components such as the battery pack, motor and controller is monitored through temperature sensors to determine whether the temperature of each component is within the normal range.

[0079] No: Perform temperature anomaly processing. According to the type of temperature anomaly (too high or too low), start the corresponding heat dissipation or heating strategy, and adjust the parameters such as the cooling fan speed and coolant flow rate. Further improve the heat dissipation efficiency through optimized heat dissipation structure. For example, use cold plate liquid cooling technology for the battery pack and optimize the cold plate layout; add heat dissipation fins to the motor and controller; optimize the heat dissipation channel; introduce a temperature averaging plate or temperature averaging tube to improve the uniformity of temperature distribution.

[0080] Yes: Continuous monitoring. Update temperature data in real time, continue to monitor the temperature status of each component, and then use intelligent algorithms to analyze temperature data and predict future temperature trends. Based on the prediction results, adjust the cooling strategy in advance to optimize energy consumption and performance.

[0081] Finally, the new energy vehicle is turned off and the thermal management system is shut down.

[0082] The technical solution provided by one or more embodiments of the present disclosure realizes the comprehensive optimization of the thermal efficiency of the whole vehicle by integrating the three subsystems of the power management subsystem, the air conditioning management subsystem and the drive management subsystem. Among them, the power management subsystem can focus on the operating temperature of the power modules of new energy vehicles such as battery packs, motors and motor controllers, and can adjust the operating temperature of the power modules to a reasonable range, thereby ensuring the safety of the power system of new energy vehicles. In addition, the air conditioning management subsystem can effectively utilize the output heat of the power management subsystem and save energy. The drive management subsystem can obtain the target temperature data of the power management subsystem, assist in adjusting the working mode of the drive element, and protect the drive element more accurately.

[0083] 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 embodiments of the device, equipment, and storage medium, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0084] 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.

[0085] Although the embodiments of the present disclosure 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 disclosure, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An automotive thermal management system, characterized in that: The automobile thermal management system includes a power management subsystem, an air conditioning management subsystem and a drive management subsystem; The power management subsystem is used to monitor the temperature information of the power module and adjust the transmission heat output by the power module through the heat dissipation channel according to the temperature information, wherein the power module includes a battery pack, a motor and a motor controller; The air conditioning management subsystem is used to obtain the transmitted heat and adjust the working mode of the cabin air conditioning according to the transmitted heat; The drive management subsystem is used to obtain the target temperature data of the power management subsystem and adjust the working mode of the drive element according to the target temperature data.

2. The system according to claim 1, characterized in that The power management subsystem includes a temperature sensor, a control module, the power module, and the heat dissipation channel; The temperature sensor is arranged in the heat dissipation area of ​​the power module, and is used to monitor the temperature information of the power module and send the temperature information to the control module; The control module is used to determine a current temperature value according to the temperature information, and adjust a heat dissipation mode of the power module based on the current temperature value; The power module uses a liquid cooling plate and a cooling fan to dissipate heat to form the transferred heat; The heat dissipation channel is used to collect and output the transferred heat.

3. The system according to claim 2, characterized in that The adjusting the heat dissipation mode of the power module based on the current temperature value includes: If the current temperature value is higher than the high temperature threshold, adjusting the rotation speed of the cooling fan to a first rotation speed, and adjusting the flow rate of the coolant in the liquid cooling plate to a first flow rate; If the current temperature value is lower than the low temperature threshold, the rotation speed of the cooling fan is adjusted to a second rotation speed, the flow rate of the coolant is restored to an initial flow rate, and the coolant is heated.

4. The system according to claim 2, characterized in that The control module is further used to predict the temperature trend according to the temperature information, and adjust the heat dissipation mode of the power module based on the temperature trend.

5. The system according to claim 4, characterized in that The adjusting the heat dissipation mode of the power module based on the temperature trend includes: If the temperature trend indicates that the temperature of the power module continues to rise within the first period, adjusting the speed of the cooling fan to a third speed, and adjusting the flow rate of the coolant in the liquid cooling plate to a second flow rate; If the temperature trend indicates that the temperature of the power module continues to decrease during the second time period, the rotation speed of the cooling fan is adjusted to a fourth rotation speed, and the flow rate of the coolant is adjusted to a third flow rate.

6. The system according to claim 2, characterized in that The power management subsystem further includes heat dissipation fins, which are arranged in a heat dissipation region of the power module to increase a heat dissipation area of ​​the power module.

7. The system according to any one of claims 1 to 6, characterized in that: A temperature averaging plate or a temperature averaging tube is disposed inside the heat dissipation channel for conducting the transmission heat.

8. The system according to any one of claims 1 to 6, characterized in that: The obtaining of the transferred heat and adjusting the working mode of the cabin air conditioner according to the transferred heat includes: When the cabin temperature is lower than a first preset temperature, detecting the channel air temperature of the heat dissipation channel; If the channel air temperature is higher than the cabin temperature, the transferred heat is obtained from the heat dissipation channel to increase the cabin temperature; If the duct air temperature is lower than the cabin temperature, or the increased cabin temperature is still lower than the first preset temperature, the heating mode of the cabin air conditioner is turned on.

9. The system according to any one of claims 1 to 6, characterized in that: The obtaining of the transferred heat and adjusting the working mode of the cabin air conditioner according to the transferred heat includes: When the cabin temperature is greater than a second preset temperature, detecting the channel air temperature of the heat dissipation channel; If the channel air temperature is lower than the cabin temperature, the transferred heat is obtained from the heat dissipation channel to reduce the cabin temperature; If the channel air temperature is higher than the cabin temperature, or the cabin temperature after being lowered is still greater than the second preset temperature, the cooling mode of the cabin air conditioner is turned on.

10. The system according to any one of claims 1 to 6, characterized in that: The step of adjusting the working mode of the driving element according to the target temperature data includes: Determine whether the target temperature data is greater than a warning value; If the target temperature data is greater than the warning value, the power of the driving element is reduced.

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