Thermal management system, vehicle, vehicle thermal management method and readable storage medium

Abstract

The invention provides a thermal management system, a vehicle, a vehicle thermal management method and a readable storage medium. The heat management system comprises a low-temperature cooling loop, an air conditioner loop, a switching assembly, a first radiator set and a second radiator set. The switching assembly is used for connecting any two radiators in the first radiator set and the second radiator set in series according to working parameters of the heat management system and connecting the radiators into a low-temperature cooling loop, and connecting the other radiators into an air conditioner loop. According to the switching mode of the switching assembly, the heat dissipation effect can be optimized according to the actual working condition and the heat dissipation requirement of the vehicle, the energy efficiency of the whole vehicle is improved, and therefore the heat dissipation requirements of different scenes are met.

Description

Technical Field

[0001] The present application relates to the field of vehicle thermal management technology, and in particular to a thermal management system, a vehicle, a vehicle thermal management method, and a readable storage medium. Background Art

[0002] The primary function of a vehicle's thermal management system is to ensure that all vehicle systems (air conditioning, engine, air boost, transmission, and hydraulic systems) operate within an optimal temperature range. Due to the varying operating modes and environmental conditions of the vehicle, the heat exchange requirements of these systems vary significantly. Currently, using a single radiator to integrate these various systems only provides complementary cooling capacity, resulting in a single solution that cannot meet diverse scenarios. Summary of the Invention

[0003] The present application provides a thermal management system, a vehicle, a vehicle thermal management method, and a readable storage medium that are conducive to meeting the heat dissipation requirements of different scenarios.

[0004] In a first aspect, an embodiment of the present application provides a thermal management system, which includes a low-temperature cooling circuit, an air-conditioning circuit, a switching component, a first radiator group, and a second radiator group; the switching component is used to connect any two radiators in the first radiator group and the second radiator group in series and connect them to the low-temperature cooling circuit according to the operating parameters of the low-temperature cooling circuit and the air-conditioning circuit, and connect the remaining radiators to the air-conditioning circuit.

[0005] According to the first aspect, in a possible implementation, the thermal management system includes a first air duct and a second air duct that are independent of each other, the first radiator group includes a first radiator and a second radiator that are spaced apart in the first air duct along a direction away from the air inlet side, and the second radiator group includes a third radiator and a fourth radiator that are spaced apart in the second air duct along a direction away from the air inlet side.

[0006] According to the first aspect, in a possible implementation, the switching assembly includes a first switching valve, which is used to connect the first radiator and the second radiator, and to connect the third radiator and the fourth radiator; or the first switching valve is used to connect the first radiator and the third radiator, and to connect the second radiator and the fourth radiator.

[0007] According to the first aspect, in a possible implementation, the switching component also includes a second switching valve and a third switching valve, the second switching valve being used to connect the first radiator with one of the low-temperature cooling circuit and the air-conditioning circuit, and to connect the fourth radiator with the other of the low-temperature cooling circuit and the air-conditioning circuit; the third switching valve being used to connect the second radiator with one of the low-temperature cooling circuit and the air-conditioning circuit, and to connect the third radiator with the other of the low-temperature cooling circuit and the air-conditioning circuit.

[0008] According to the first aspect, in a possible implementation, an active grille is provided on the air inlet side of the first air duct and / or the second air duct, and the active grille is used to open or close the first air duct or the second air duct.

[0009] According to the first aspect, in a possible implementation, a first fan is provided on the air outlet side of the first air duct, and the first fan is used to adjust the airflow velocity of the first air duct; a second fan is provided on the air outlet side of the second air duct, and the second fan is used to adjust the airflow velocity of the second air duct.

[0010] In a second aspect, an embodiment of the present application further provides a vehicle, comprising the thermal management system described in the first aspect.

[0011] In a third aspect, embodiments of the present application further provide a vehicle thermal management method, which is applied to the thermal management system described in the first aspect, and includes:

[0012] Obtain operating parameters of low-temperature cooling circuit and air conditioning circuit;

[0013] According to the working parameters, the switching component is controlled to connect two radiators in the first radiator group and the second radiator group in series and connect them to the low-temperature cooling circuit, and the remaining radiators are connected to the air-conditioning circuit.

[0014] According to the third aspect, in one possible implementation, the thermal management system includes a first air duct and a second air duct that are independent of each other, the first radiator group includes a first radiator and a second radiator spaced apart in the first air duct in a direction away from an air inlet side, and the second radiator group includes a third radiator and a fourth radiator spaced apart in the second air duct in a direction away from an air inlet side; the operating parameter of the low-temperature cooling circuit includes the temperature of the coolant in the low-temperature cooling circuit;

[0015] The controlling the switching component according to the working parameters to connect two radiators in the first radiator group and the second radiator group in series and connect them to the low-temperature cooling circuit, and connecting the remaining radiators to the air-conditioning circuit includes:

[0016] When the temperature of the coolant in the low-temperature cooling circuit is lower than a preset temperature, the switching component is controlled to connect the first radiator and the third radiator in series and connect them to the air-conditioning circuit, and to connect the second radiator and the fourth radiator in series and connect them to the low-temperature cooling circuit;

[0017] When the temperature of the coolant in the low-temperature cooling circuit is greater than or equal to a preset temperature, the switching component is controlled to connect the first radiator and the third radiator in series and connect them to the low-temperature cooling circuit, and to connect the second radiator and the fourth radiator in series and connect them to the air-conditioning circuit.

[0018] According to the third aspect, in one possible implementation, a first fan is provided on the air outlet side of the first air duct, and a second fan is provided on the air outlet side of the second air duct; the operating parameters of the air conditioning circuit include the temperature of the coolant in the air conditioning circuit; and controlling the switching component according to the operating parameters to connect two radiators in the first radiator group and the second radiator group in series and connect them to the low-temperature cooling circuit, and to connect the remaining radiators to the air conditioning circuit further includes:

[0019] obtaining a first fan speed according to the temperature of the coolant in the low-temperature cooling circuit; obtaining a second fan speed according to the temperature of the coolant in the air-conditioning circuit;

[0020] When the difference between the first fan speed and the second fan speed is greater than a first threshold, the switching component is controlled to connect the first radiator and the second radiator in series and connect them to the air-conditioning circuit, and to connect the third radiator and the fourth radiator in series and connect them to the low-temperature cooling circuit.

[0021] According to the third aspect, in one possible implementation, an active grille is provided on the air inlet side of the first air duct; controlling the switching component to connect the first radiator and the second radiator in series and connect them to the air conditioning circuit, and connecting the third radiator and the fourth radiator in series and connect them to the low-temperature cooling circuit includes:

[0022] When the vehicle air conditioner is turned off, the active grille and the first fan in the first air duct are closed.

[0023] According to the third aspect, in a possible implementation, after controlling the switching component to connect the first radiator and the second radiator in series and connect them to the air-conditioning circuit, and to connect the third radiator and the fourth radiator in series and connect them to the low-temperature cooling circuit, the method further includes:

[0024] When the first radiator or the second radiator is frosted, the switching component is controlled to switch the first radiator and the second radiator to the low-temperature cooling circuit, and the third radiator and the fourth radiator to the air-conditioning circuit.

[0025] In a fourth aspect, an embodiment of the present application further provides a readable storage medium, wherein the readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the vehicle thermal management method described in the third aspect are implemented.

[0026] In the thermal management system, vehicle, vehicle thermal management method, and readable storage medium provided herein, a switching component can connect any two radiators in the first and second radiator groups in series and connect them to the low-temperature cooling circuit, while simultaneously connecting the remaining radiators to the air conditioning circuit. This flexible switching method optimizes the cooling effect and improves the energy efficiency of the entire vehicle based on the vehicle's actual operating conditions and cooling requirements, thereby meeting the cooling needs of different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the implementation methods or the description of the prior art. Obviously, the drawings described below are only 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.

[0028] Figure 1 is a schematic diagram of an embodiment of the thermal management system in this application;

[0029] Figure 2 It is a structural schematic diagram of one state of the first example of the thermal management system in this application;

[0030] Figure 3 is a structural schematic diagram of another state of the first example of the thermal management system in this application;

[0031] Figure 4 is a structural diagram of a second example of a thermal management system in this application;

[0032] Figure 5 is a schematic structural diagram of a third example of a thermal management system in this application;

[0033] Figure 6 It is a structural diagram of the hardware operating environment involved in this application solution;

[0034] Figure 7 This is a flow chart of a first embodiment of the vehicle thermal management method provided by the present application;

[0035] Figure 8 is a flow chart of a second embodiment of the vehicle thermal management method provided by the present application;

[0036] Figure 9 It is a flow chart of the third embodiment of the vehicle thermal management method provided in this application.

[0037] Reference numerals:

[0038] 100-thermal management system; 10-low-temperature cooling circuit; 11-low-temperature cooling water pump; 12-all-in-one controller; 13-motor; 20-air conditioning circuit; 21-air conditioning cooling water pump; 22-water-cooled condenser; 30-switching component; 31-first switching valve; 32-second switching valve; 33-third switching valve; 41-first radiator group; 411-first radiator; 412-second radiator; 42-second radiator group; 421-third radiator; 422-fourth radiator; 51-first air duct; 52-second air duct; 61-active grille; 621-first fan; 622-second fan; 1001-controller; 1002-communication bus; 1003-user interface; 1004-network interface; 1005-memory. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be an intermediate component. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be an intermediate component.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used in this application includes any and all combinations of one or more of the relevant listed items.

[0042] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0043] This application provides a vehicle that includes a thermal management system. The thermal management system primarily cools the engine, motor, engine oil, lubricants, charge air, fuel, electronic devices, and exhaust gas recirculation (EGR), while also controlling the temperature of the engine compartment and cab. Through effective cooling and temperature control, the system ensures that all vehicle components operate within the optimal operating temperature range, thereby improving the performance and reliability of the entire vehicle.

[0044] See also Figure 1 The thermal management system 100 includes a low-temperature cooling circuit 10, an air conditioning circuit 20, a switching assembly 30, a first radiator group 41, and a second radiator group 42. The low-temperature cooling circuit 10 is primarily responsible for cooling key components in the vehicle, such as the electric drive system and battery. The low-temperature cooling circuit 10 dissipates the significant heat generated by these components during operation to the external environment, ensuring they operate within a suitable temperature range. The air conditioning circuit 20 is primarily responsible for regulating the interior temperature of the vehicle, providing a comfortable riding environment for passengers. It automatically adjusts the cooling or heating function based on the temperature difference between the interior and exterior of the vehicle, as well as the passenger's settings, to maintain a constant interior temperature. The switching assembly 30 intelligently switches the radiator connection method based on the operating parameters of the low-temperature cooling circuit 10 and the air conditioning circuit 20. Specifically, the switching assembly 30 can connect any two radiators in the first radiator group 41 and the second radiator group 42 in series and connect them to the low-temperature cooling circuit 10, while simultaneously connecting the remaining radiators to the air conditioning circuit 20. This flexible switching method optimizes heat dissipation based on the vehicle's actual operating conditions and heat dissipation requirements, improving the vehicle's energy efficiency and meeting the heat dissipation needs of different scenarios.

[0045] Furthermore, the heat sinks in the first heat sink group 41 and the heat sinks in the second heat sink group 42 can have different heat dissipation performance to meet the heat dissipation requirements of different components or under different operating conditions. By flexibly configuring the switching assembly 30, it is possible to ensure that each heat sink can operate at its optimal working state, thereby improving the efficiency of the entire thermal management system 100.

[0046] Among them, the low-temperature cooling circuit 10 is provided with a low-temperature cooling water pump 11, an all-in-one controller 12 and a motor 13. The low-temperature cooling water pump 11 is used to provide power for the coolant in the low-temperature cooling circuit 10. Through the operation of the low-temperature cooling water pump 11, the coolant can circulate continuously and stably in the low-temperature cooling circuit 10, thereby achieving a cooling effect on the system or equipment. The all-in-one controller 12 is used to achieve temperature control, flow control, etc., to ensure that the system or equipment can operate within a suitable temperature range, which helps to prevent the equipment from overheating or overcooling, thereby ensuring stable operation of the equipment and extending its service life. A channel is formed on the housing of the motor 13, and the coolant flows through the channel on the housing to cool the motor 13. The coolant can promptly take away the heat generated by the motor 13 during operation, thereby ensuring that the motor 13 operates within a suitable temperature range. It helps to improve the operating efficiency of the motor 13 and reduce performance degradation or damage caused by overheating.

[0047] The air conditioning circuit 20 is equipped with an air conditioning cooling water pump 21 and a water-cooled condenser 22. The water-cooled condenser 22 is used to exchange heat with the air conditioning refrigerant circulation, while the air conditioning cooling water pump 21 is used to drive the coolant circulation in the air conditioning circuit 20. When the air conditioning system is operating, the coolant needs to circulate continuously to remove the heat generated by the air conditioning refrigerant circulation. The air conditioning cooling water pump 21 provides power to ensure a stable and continuous flow of coolant, thereby achieving effective heat transfer and dissipation. The water-cooled condenser 22 is used to exchange heat with the air conditioning refrigerant circulation. In the air conditioning system, the refrigerant absorbs and releases heat through circulation, thereby achieving a cooling or heating effect. As the refrigerant flows through the water-cooled condenser 22, it exchanges heat with the coolant. The coolant absorbs the heat released by the refrigerant, removes it, and discharges it to the external environment. This allows the refrigerant to maintain a low temperature, allowing it to continue to circulate and exchange heat effectively.

[0048] In some embodiments, the thermal management system 100 includes a first air duct 51 and a second air duct 52 that are independent of each other. The first air duct 51 and the second air duct 52 serve as airflow channels that can effectively guide the airflow to exchange heat with the internal radiator. The first radiator group 41 includes a first radiator 411 and a second radiator 412 that are spaced apart in the first air duct 51 in a direction away from the air inlet side, which can ensure that the airflow can sequentially exchange heat when passing through the first radiator 411 and the second radiator 412, thereby improving the efficiency of the radiator; at the same time, it can also reduce mutual interference between the radiators, so that each radiator can exert its heat dissipation performance. Similarly, the second radiator group 42 includes a third radiator 421 and a fourth radiator 422 that are spaced apart in the second air duct 52 in a direction away from the air inlet side, ensuring that the airflow can effectively exchange heat with the two radiators to achieve the purpose of heat dissipation.

[0049] By placing multiple heat sinks in two separate air ducts, the thermal management system 100 can flexibly adjust to the cooling requirements of different components. For critical components that generate a lot of heat, the system can place their corresponding heat sinks closer to the air inlet to dissipate heat more quickly. For components with less heat dissipation requirements, their corresponding heat sinks can be placed further away from the air inlet to balance the cooling effect of the entire system.

[0050] An active grille 61 may be provided on the air intake side of the first air duct 51, and an active grille 61 may be provided on the air intake side of the second air duct 52. The active grille 61 may control the opening or closing of the air duct to participate in the thermal management of the vehicle. Specifically, the active grille 61 is usually located at the head of the vehicle and is integrated with the center grille on the front bumper of the vehicle. The engine / motor 13 needs to heat up quickly to achieve optimal working conditions. At this time, the active grille 61 will close to reduce the entry of external cold air into the engine compartment, helping the engine / motor 13 to heat up quickly. When the vehicle temperature is too high, such as in a high temperature environment or after a long period of high-load operation, the engine / motor 13 needs to effectively dissipate heat to prevent overheating. At this time, the active grille 61 will actively open, increase the air intake, improve the heat dissipation effect, and ensure that the engine / motor 13 operates within a safe temperature range. When the vehicle is traveling at high speed, by partially or completely closing the active grille 61, the wind resistance of the vehicle when moving forward can be reduced, thereby reducing energy consumption.

[0051] The air outlet side of the first air duct 51 can be provided with a first fan 621, and the air outlet side of the second air duct 52 can be provided with a second fan 622. Each fan (the first fan 621 and the second fan 622) can be independently controlled to adjust the fan speed according to the heat dissipation requirements and external conditions in the air duct. When the radiator needs more cooling airflow, the fan can speed up the rotation, increase the airflow rate, and thus increase the heat dissipation. On the contrary, when the heat dissipation demand is low or the external temperature is low, the fan can reduce the speed, reduce the airflow rate, and reduce the heat dissipation. By precisely controlling the speed and wind direction of the fan, it is also possible to achieve uniform distribution of airflow in the air duct, avoiding insufficient or excessive heat dissipation in certain areas. This helps to improve the overall efficiency of the radiator and extend its service life.

[0052] Based on the above examples, please refer to Figure 1 and Figure 2The switching assembly 30 includes a first switching valve 31, a second switching valve 32 and a third switching valve 33. The first switching valve 31 is used to adjust the connection relationship between multiple radiators; specifically, the first switching valve 31 has two connecting positions. In the first connecting position, the first radiator 411 and the second radiator 412 are connected in series, and the third radiator 421 and the fourth radiator 422 are connected in series. The two radiators in series are in the same air duct. When one of the circuits is not started, the corresponding air duct can be closed, thereby reducing the wind resistance of the car during driving and reducing the energy consumption of the entire vehicle. In the second connection position, the first radiator 411 and the third radiator 421 are connected in series, and the second radiator 412 and the fourth radiator 422 are connected in series. Since the first radiator 411 and the third radiator 421 are close to the air inlet side, when the airflow flows through the first air duct 51 and the second air duct 52, the first radiator 411 and the third radiator 421 are positioned further forward, and the airflow can exchange heat with the first radiator and the third radiator 421 earlier, thereby improving the heat dissipation efficiency, increasing the heat exchange capacity of the circuit where the first radiator and the third radiator 421 are located, and meeting the different heat exchange requirements of the circuits.

[0053] The second and third switching valves 32 and 33 are responsible for connecting the radiators to different cooling circuits. Specifically, the second switching valve 32 connects the first radiator 411 to either the low-temperature cooling circuit 10 or the air conditioning circuit 20, and connects the fourth radiator 422 to the other of these two circuits. The third switching valve 33 connects the second radiator 412 to either the low-temperature cooling circuit 10 or the air conditioning circuit 20, and connects the third radiator 421 to the other of these two circuits. The radiator can be connected to the most appropriate circuit based on the vehicle's operating conditions and cooling requirements to achieve optimal cooling.

[0054] The first switching valve 31 , the second switching valve 32 and the third switching valve 33 may be four-way valves or two-position three-way valves or other electromagnetic valves capable of switching the communication relationship, and this application does not impose any limitation on this.

[0055] In the first example of the above implementation, Figure 2 As shown, the first radiator 411 and the third heat exchanger are connected in series and connected to the air conditioning circuit 20, and the second radiator 412 and the fourth radiator 422 are connected in series and connected to the low-temperature cooling circuit 10. When the low-temperature cooling system is satisfied, the first radiator 411 and the third radiator 421 are used as air conditioning radiators, and the second radiator 412 and the fourth radiator 422 are used as low-temperature radiators. Since the air conditioning radiators are close to the air inlet side, the heat exchange capacity of the air conditioning system can be increased, the pressure of the air conditioning system can be reduced, and the energy consumption of the air conditioning system can be reduced. When the temperature of the coolant in the low-temperature cooling circuit 10 is higher than the preset temperature, as shown in FIG. Figure 3As shown, by adjusting the second switching valve 32 and the third switching valve 33, the first radiator 411 and the third radiator 421 can be switched in series and connected to the low-temperature cooling circuit 10, and the second radiator 412 and the fourth radiator 422 can be switched in series and connected to the air-conditioning circuit 20, so as to timely cool the coolant in the low-temperature cooling circuit 10 to meet the heat dissipation requirements of the low-temperature cooling system.

[0056] In the second example of the above embodiment, when the heat sinks in a single air duct are connected in series to meet the heat dissipation requirements of two systems, the heat sinks in the same air duct are connected in series. Figure 4 As shown, the first radiator 411 and the second radiator 412 in the first air duct 51 can be connected in series as an air conditioning radiator, and the third radiator 421 and the fourth radiator 422 in the second air duct 52 can be connected in series as a low-temperature radiator. According to the heat dissipation requirements of different systems, the fan of the corresponding air duct is controlled to open or adjust the speed to adapt to the energy-saving control requirements of the entire vehicle. In addition, when the air conditioning system is not in use, the fan and active grille 61 of the air duct corresponding to the air conditioning circuit are turned off to reduce the wind resistance and energy consumption of the entire vehicle. At the same time, the fan and active grille 61 corresponding to the low-temperature cooling circuit 10 are adjusted according to the cooling requirements of the low-temperature cooling circuit 10.

[0057] In the third example of the above embodiment, when the vehicle is in heat pump mode, the air conditioner radiator acts as an outdoor heat exchanger to absorb heat from the air. By adjusting the first switching valve 31, the radiators of the same air duct are connected in series, such as Figure 4 As shown, the first radiator 411 and the second radiator 412 in the first air duct 51 are connected in series as an external heat exchanger. The third radiator 421 and the fourth radiator 422 in the second air duct 52 serve as low-temperature radiators. If frost is detected on the first radiator 411 or the second radiator 412, the active grille 61 and the fan of the first air duct 51 are turned off until the performance of the air conditioning system drops to a certain limit. Figure 5 As shown, the mode is switched by the second switching valve 32 and the third switching valve 33, and the third radiator 421 and the fourth radiator 422 are used as air-conditioning radiators, and the first radiator 411 and the second radiator 412 are used as low-temperature radiators. For the first radiator 411 or the second radiator 412 that has frosted, the heat of the coolant in the low-temperature cooling circuit 10 is used to defrost. During the radiator defrosting stage, the active grilles 61 and fans of the two air ducts are closed to reduce the wind resistance and energy consumption of the entire vehicle. Since there is no frost when the third radiator 421 and the fourth radiator 422 are used as air-conditioning radiators, the heat pump system can be guaranteed to continue to operate normally. If the third radiator 421 and the fourth radiator 422 are frosted again, the same measures can be used to defrost.

[0058] In other embodiments, the thermal management system 100 may further include more heat exchange circuits, and correspondingly, may further include a third radiator group and a fourth radiator group, each of which may include three, four, or even more radiators. This application does not limit this.

[0059] See also Figure 6 The thermal management system 100 includes a controller 1001, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 is mainly used for users to interact with data. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and optionally the user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 is mainly used for data communication with a network server. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface).

[0060] The controller 1001 is used to call computer instructions to execute the seat belt control method. The controller 1001 can be a central processing unit (CPU). The controller 1001 can also be other general controllers, digital signal controllers (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0061] The memory 1005 is used to store computer instructions. The memory 1005 can be a volatile memory 1005 or a non-volatile memory 1005, or can include both volatile and non-volatile memories 1005. The non-volatile memory 1005 can be a read-only memory 1005 (ROM), a programmable read-only memory 1005 (PROM), an erasable programmable read-only memory 1005 (EPROM), an electrically erasable programmable read-only memory 1005 (EEPROM), or a flash memory. The volatile memory 1005 can be a random access memory 1005 (RAM), which is used as an external cache memory. By way of example and not limitation, many forms of RAM are available, such as static random access memory 1005 (SRAM), dynamic random access memory 1005 (DRAM), synchronous dynamic random access memory 1005 (SDRAM), double data rate synchronous dynamic random access memory 1005 (DDR SDRAM), enhanced synchronous dynamic random access memory 1005 (ESDRAM), synchronous link dynamic random access memory 1005 (SLDRAM) and direct RAM bus random access memory 1005 (DRRAM).

[0062] It should be noted that when the controller 1001 is a general controller, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory 1005 (storage module) is integrated into the controller 1001.

[0063] It should be noted that the memory 1005 described herein is intended to include, but is not limited to, these and any other suitable types of memory 1005 .

[0064] In addition to the data bus, the bus may also include a power bus, a control bus, a status signal bus, etc. However, for the sake of clarity, various buses are labeled as buses in the figure.

[0065] The present application also proposes a storage medium on which a thermal management program is stored. The thermal management program is executed by a controller to implement a vehicle thermal management method so that the thermal management system 100 meets the heat dissipation requirements of different scenarios.

[0066] The vehicle thermal management method provided by this application will be described in detail below.

[0067] Please refer to Figure 7 , Figure 7 This is a flow chart of a first embodiment of the vehicle thermal management method provided by this application. In this embodiment, the vehicle thermal management method includes the following steps:

[0068] S10, obtaining operating parameters of the low-temperature cooling circuit and the air-conditioning circuit;

[0069] The low-temperature cooling circuit is used to cool key vehicle components, such as the engine and battery. This circuit dissipates the significant heat generated by these components during operation to the external environment, ensuring they operate within a suitable temperature range. The low-temperature cooling circuit is equipped with a low-temperature cooling water pump, an all-in-one controller, and a motor. The low-temperature cooling water pump provides power for the coolant within the low-temperature cooling circuit, while the all-in-one controller controls temperature and flow. The motor housing is formed with channels through which coolant flows, cooling the motor.

[0070] The operating parameters of the low-temperature cooling circuit include the temperature of the coolant in the circuit. A temperature sensor can be installed at the outlet of the low-temperature cooling water pump to detect the temperature before heat exchange, and a temperature sensor can also be installed at the outlet of the channel on the motor housing to detect the temperature after heat exchange. The operating parameters of the low-temperature cooling circuit also include motor temperature and ambient temperature. Which parameters should be used to determine whether the series connection within a single duct can meet the heat dissipation requirements?

[0071] The air conditioning circuit regulates the vehicle's interior temperature, providing a comfortable ride for passengers. It automatically adjusts cooling and heating based on the temperature difference between inside and outside the vehicle, as well as the passenger's preferences, to maintain a constant interior temperature. The air conditioning circuit is equipped with a cooling water pump and a water-cooled condenser. The water-cooled condenser exchanges heat with the air conditioning refrigerant, while the cooling water pump circulates the coolant within the circuit.

[0072] The operating parameters of the air conditioning circuit include the temperature of the coolant in the circuit. A temperature sensor can be installed at the outlet of the cooling water pump to detect the temperature before heat exchange, and a temperature sensor can be installed at the outlet of the water-cooled condenser to detect the temperature after heat exchange. The operating parameters of the low-temperature cooling circuit also include the temperature of the refrigerant flowing through the water-cooled condenser.

[0073] S20 , controlling the switching component according to the working parameters to connect two radiators in the first radiator group and the second radiator group in series and connect them to the low-temperature cooling circuit, and connect the remaining radiators to the air-conditioning circuit.

[0074] The radiators in the first and second radiator groups can have different cooling performances to accommodate the cooling requirements of different components or operating conditions. A switching component can connect any two radiators in series to the low-temperature cooling circuit, while simultaneously connecting the remaining radiators to the air conditioning circuit. This flexible switching method optimizes cooling performance based on the vehicle's actual operating conditions and cooling requirements, improving overall vehicle energy efficiency and meeting cooling requirements in diverse scenarios.

[0075] Please refer to Figure 8 , Figure 8 This is a flow chart of a second embodiment of the vehicle thermal management method provided by this application. In this embodiment, step S20 includes:

[0076] S21. When the temperature of the coolant in the low-temperature cooling circuit is lower than a preset temperature, controlling the switching component to connect the first radiator and the third radiator in series and connect them to the air-conditioning circuit, and to connect the second radiator and the fourth radiator in series and connect them to the low-temperature cooling circuit;

[0077] While meeting the heat dissipation requirements of the low-temperature cooling system, the first radiator and the third heat exchanger are used as air-conditioning radiators, and the second radiator and the fourth radiator are used as low-temperature radiators. Since the air-conditioning radiator is close to the air inlet side, the heat exchange capacity of the air-conditioning system can be increased, the pressure of the air-conditioning system can be reduced, and the energy consumption of the air-conditioning system can be reduced.

[0078] S22. When the temperature of the coolant in the low-temperature cooling circuit is greater than or equal to a preset temperature, control the switching component to connect the first radiator and the third radiator in series and connect them to the low-temperature cooling circuit, and connect the second radiator and the fourth radiator in series and connect them to the air-conditioning circuit.

[0079] When the heat dissipation requirements of the low-temperature cooling system cannot be met, the first radiator and the third heat exchanger are used as low-temperature radiators, and the second radiator and the fourth radiator are used as air-conditioning radiators. Since the low-temperature radiator is close to the air inlet side, the coolant in the low-temperature cooling circuit is cooled in time to meet the heat dissipation requirements of the low-temperature cooling system.

[0080] For example, the preset temperature can be 62°C. When the coolant temperature in the low-temperature cooling circuit is less than 62°C, the first radiator and the third heat exchanger are used as air-conditioning radiators, and the second radiator and the fourth radiator are used as low-temperature radiators; when the coolant temperature in the low-temperature cooling circuit is less than 62°C, the first radiator and the third heat exchanger are used as low-temperature radiators, and the second radiator and the fourth radiator are used as air-conditioning radiators.

[0081] It is understandable that the preset temperature can be set according to actual needs, and this application does not limit this.

[0082] In this embodiment, the temperature of the coolant in the low-temperature cooling circuit is used as the judgment basis to timely adjust the position of the radiator connected to the low-temperature cooling circuit. On the premise of meeting the low-temperature cooling and heat dissipation requirements, the heat exchange capacity of the air-conditioning system is increased, the pressure of the air-conditioning system is reduced, and the overall energy consumption is reduced.

[0083] Please refer to Figure 9 , Figure 9 This is a flow chart of the third embodiment of the vehicle thermal management method provided by this application. In this embodiment, step S20 further includes:

[0084] S23, obtaining a first fan speed according to the temperature of the coolant in the low-temperature cooling circuit; obtaining a second fan speed according to the temperature of the coolant in the air-conditioning circuit;

[0085] The first fan speed required for the radiator connected to the low-temperature cooling circuit can be calculated according to the temperature of the coolant in the low-temperature cooling circuit; the second fan speed required for the radiator connected to the low-temperature cooling circuit can be calculated according to the temperature of the coolant in the air-conditioning circuit.

[0086] S24. When the difference between the first fan speed and the second fan speed is greater than a first threshold, control the switching component to connect the first radiator and the second radiator in series and connect them to the air-conditioning circuit, and connect the third radiator and the fourth radiator in series and connect them to the low-temperature cooling circuit.

[0087] For example, the first threshold value can be 30%. When the difference between the duty cycle of the first fan speed and the duty cycle of the second fan speed is greater than 30%, it means that there is a risk of overcooling of the low-temperature cooling circuit or the air-conditioning circuit when two radiators of different radiators are used in series. At this time, the first radiator and the second radiator are used as air-conditioning radiators, and the third radiator and the fourth radiator are used as low-temperature radiators. The first fan and the second fan can be controlled independently. According to the heat dissipation requirements of different systems, the opening or speed adjustment of the fans of the corresponding air ducts can be controlled to adapt to the energy-saving control requirements of the entire vehicle.

[0088] An active grille is provided on the air inlet side of the first air duct, and a first fan is provided on the air outlet side; an active grille is provided on the air inlet side of the second air duct, and a second fan is provided on the air outlet side.

[0089] When the radiators in a single air duct are connected in series to meet the cooling requirements of both systems, the radiators in the same air duct can be used in series. The first and second radiators in the first air duct can be connected in series as an air conditioning radiator, and the third and fourth radiators in the second air duct can be connected in series as a low-temperature radiator. According to the cooling requirements of different systems, the fan of the corresponding air duct is controlled to open or adjust the speed to adapt to the energy-saving control requirements of the entire vehicle. And when the vehicle's air conditioning system is turned off, the active grille and the first fan in the first air duct are turned off. Reduce the wind resistance and fan energy consumption of the entire vehicle. At the same time, the fan and active grille of the low-temperature cooling system are adjusted according to the cooling requirements of the system.

[0090] After step S24, the following steps are also included:

[0091] When the first radiator or the second radiator is frosted, the switching component is controlled to switch the first radiator and the second radiator to the low-temperature cooling circuit, and the third radiator and the fourth radiator to the air-conditioning circuit.

[0092] When the vehicle is operating in heat pump mode, the air conditioning radiator acts as an outdoor heat exchanger, absorbing heat from the air. By adjusting the first switching valve, radiators in the same duct can be connected in series. For example, the first and second radiators in the first duct can be connected in series to function as an outdoor heat exchanger. The third and fourth radiators in the second duct function as low-temperature radiators. If frost is detected on either the first or second radiator, the active grilles and fan in the first duct are shut down until air conditioning system performance drops below a certain threshold. The second and third switching valves then switch modes, switching the third and fourth radiators to air conditioning radiators and the first and second radiators to low-temperature radiators. If frosted first or second radiators are defrosted, heat from the low-temperature system is used to defrost them. During the defrosting phase, the active grilles and fans in both ducts are shut down, reducing vehicle windage and fan energy consumption. Since the third and fourth radiators are not frosted when functioning as air conditioning radiators, the heat pump system maintains continuous operation. If frost appears on the third and fourth radiators again, the same measures can be used to defrost them.

[0093] It should be noted that the first air duct, the second air duct, the first radiator, the second radiator, the third radiator and the fourth radiator in this application are only for the convenience of distinction and do not limit their positions.

[0094] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" are based on the orientation or positional relationship described in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0095] The above disclosure is only a preferred embodiment of the present application, and certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present application are still within the scope covered by the present application.

Claims

1. A thermal management system, characterized in that: The thermal management system includes a low-temperature cooling circuit, an air-conditioning circuit, a switching component, a first radiator group and a second radiator group; the switching component is used to connect any two radiators in the first radiator group and the second radiator group in series and connect them to the low-temperature cooling circuit according to the operating parameters of the low-temperature cooling circuit and the air-conditioning circuit, and connect the remaining radiators to the air-conditioning circuit.

2. The thermal management system according to claim 1, characterized in that The thermal management system includes a first air duct and a second air duct that are independent of each other. The first radiator group includes a first radiator and a second radiator that are spaced apart in the first air duct along a direction away from the air inlet side. The second radiator group includes a third radiator and a fourth radiator that are spaced apart in the second air duct along a direction away from the air inlet side.

3. The thermal management system according to claim 2, characterized in that: The switching assembly includes a first switching valve, which is used to connect the first radiator and the second radiator, and to connect the third radiator and the fourth radiator; or the first switching valve is used to connect the first radiator and the third radiator, and to connect the second radiator and the fourth radiator.

4. The thermal management system according to claim 2, characterized in that: The switching assembly also includes a second switching valve and a third switching valve, the second switching valve being used to connect the first radiator with one of the low-temperature cooling circuit and the air-conditioning circuit, and to connect the fourth radiator with the other of the low-temperature cooling circuit and the air-conditioning circuit; the third switching valve being used to connect the second radiator with one of the low-temperature cooling circuit and the air-conditioning circuit, and to connect the third radiator with the other of the low-temperature cooling circuit and the air-conditioning circuit.

5. The thermal management system according to claim 2, characterized in that: An active grille is provided on the air inlet side of the first air duct and / or the second air duct, and the active grille is used to open or close the first air duct or the second air duct.

6. The thermal management system according to claim 2, characterized in that: A first fan is provided on the air outlet side of the first air duct, and the first fan is used to adjust the air flow velocity of the first air duct; A second fan is provided on the air outlet side of the second air duct, and the second fan is used to adjust the air flow rate of the second air duct.

7. A vehicle, characterized in that: The vehicle comprises a thermal management system according to any one of claims 1 to 6.

8. A vehicle thermal management method, characterized in that: The vehicle thermal management method is applied to the thermal management system according to any one of claims 1 to 6, and the vehicle thermal management method includes: Obtain operating parameters of low-temperature cooling circuit and air conditioning circuit; According to the working parameters, the switching component is controlled to connect two radiators in the first radiator group and the second radiator group in series and connect them to the low-temperature cooling circuit, and the remaining radiators are connected to the air-conditioning circuit.

9. The vehicle thermal management method according to claim 8, characterized in that: The thermal management system includes a first air duct and a second air duct that are independent of each other, the first radiator group includes a first radiator and a second radiator spaced apart in the first air duct in a direction away from the air inlet side, and the second radiator group includes a third radiator and a fourth radiator spaced apart in the second air duct in a direction away from the air inlet side; the operating parameter of the low-temperature cooling circuit includes the temperature of the coolant in the low-temperature cooling circuit; The controlling the switching component according to the working parameters to connect two radiators in the first radiator group and the second radiator group in series and connect them to the low-temperature cooling circuit, and connecting the remaining radiators to the air-conditioning circuit includes: When the temperature of the coolant in the low-temperature cooling circuit is lower than a preset temperature, the switching component is controlled to connect the first radiator and the third radiator in series and connect them to the air-conditioning circuit, and to connect the second radiator and the fourth radiator in series and connect them to the low-temperature cooling circuit; When the temperature of the coolant in the low-temperature cooling circuit is greater than or equal to a preset temperature, the switching component is controlled to connect the first radiator and the third radiator in series and connect them to the low-temperature cooling circuit, and to connect the second radiator and the fourth radiator in series and connect them to the air-conditioning circuit.

10. The vehicle thermal management method according to claim 9, characterized in that: A first fan is provided on the air outlet side of the first air duct, and a second fan is provided on the air outlet side of the second air duct; the operating parameters of the air conditioning circuit include the temperature of the coolant in the air conditioning circuit; and the method of controlling the switching component according to the operating parameters to connect two radiators in the first radiator group and the second radiator group in series and connect them to the low-temperature cooling circuit, and to connect the remaining radiators to the air conditioning circuit further includes: obtaining a first fan speed according to the temperature of the coolant in the low-temperature cooling circuit; obtaining a second fan speed according to the temperature of the coolant in the air-conditioning circuit; When the difference between the first fan speed and the second fan speed is greater than a first threshold, the switching component is controlled to connect the first radiator and the second radiator in series and connect them to the air-conditioning circuit, and to connect the third radiator and the fourth radiator in series and connect them to the low-temperature cooling circuit.

11. The vehicle thermal management method according to claim 10, characterized in that: An active grille is provided on the air inlet side of the first air duct; and controlling the switching component to connect the first radiator and the second radiator in series and connect them to the air conditioning circuit, and to connect the third radiator and the fourth radiator in series and connect them to the low-temperature cooling circuit comprises: When the vehicle air conditioner is turned off, the active grille and the first fan in the first air duct are closed.

12. The vehicle thermal management method according to claim 10, characterized in that: After controlling the switching component to connect the first radiator and the second radiator in series and connect them to the air conditioning circuit, and connect the third radiator and the fourth radiator in series and connect them to the low-temperature cooling circuit, the method further includes: When the first radiator or the second radiator is frosted, the switching component is controlled to switch the first radiator and the second radiator to the low-temperature cooling circuit, and the third radiator and the fourth radiator to the air-conditioning circuit.

13. A readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the vehicle thermal management method according to any one of claims 8 to 12 are implemented.

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