Control method and device of thermal management system, vehicle and medium

Abstract

The invention provides a control method and device for a thermal management system, a vehicle and a medium, and the method comprises the steps: obtaining first temperature data, and determining an operation mode according to the first temperature data; wherein the first temperature data comprises temperature data of the vehicle part; if the operation mode indicates to cool the target vehicle part, determining a target channel corresponding to the target vehicle part; and an electromagnetic valve of the target channel is controlled, and a compressor and / or a first air conditioning system are / is controlled, so that a refrigerant passes through the target channel, a first condenser and a first evaporator to cool the target vehicle part. According to the invention, the stability and reliability of the thermal management system can be effectively improved, the energy efficiency can be improved, and the lightweight design requirement of the vehicle can be met.

Description

Technical Field

[0001] This invention relates to the field of vehicle electrical system technology, and in particular to control methods and devices for thermal management systems, vehicles, and media. Background Technology

[0002] As the automotive industry transforms towards electrification and intelligence, the design of efficient thermal management systems has gradually become one of the key issues in the industry.

[0003] The thermal management system is a crucial component of a vehicle, used to regulate the temperature of various parts to ensure they operate at their optimal condition. This role is even more critical in new energy vehicles, as the thermal management system must not only manage the temperature of the battery, motor, and electronic control systems but also ensure passenger comfort.

[0004] In the thermal management systems of related technologies, different components have different cooling requirements, necessitating additional water cooling for components such as motors and electronic control systems. However, this approach increases the complexity of wiring and component layout, leading not only to increased design and production costs and poor stability of the thermal management system, but also to increased vehicle weight due to components such as water pumps. Summary of the Invention

[0005] In view of the above problems, a control method, apparatus, vehicle, and medium for a thermal management system are proposed to overcome or at least partially solve the above problems, including: A control method for a thermal management system applied to a vehicle, the thermal management system comprising: multiple vehicle components; a first air conditioning system including a first evaporator; a compressor, wherein the refrigerant outlet of the compressor is connected to one end of a first condenser, the other end of the first condenser is connected to one end of each of the vehicle components, and one end of the first evaporator is connected via different channels, each channel being equipped with a solenoid valve; the other end of each vehicle component is connected to the other end of the first evaporator and to the refrigerant inlet of the compressor; the method comprising: Acquire first temperature data and determine the operating mode based on the first temperature data; wherein, the first temperature data includes the temperature data of the vehicle components; If the operating mode indicates cooling a target vehicle component, determine the target channel corresponding to the target vehicle component; The solenoid valve of the target channel is controlled, and the compressor and / or the first air conditioning system are controlled, so that the refrigerant cools the target vehicle component through the target channel, the first condenser and the first evaporator.

[0006] A control device for a vehicle's thermal management system, applied to a vehicle, the thermal management system comprising: a plurality of vehicle components; a first air conditioning system including a first evaporator; a compressor, wherein the refrigerant outlet of the compressor is connected to one end of a first condenser, the other end of the first condenser is respectively connected to one end of each of the vehicle components, and one end of the first evaporator is connected through different channels, each channel being provided with a solenoid valve; the other end of each of the vehicle components is connected to the other end of the first evaporator and to the refrigerant inlet of the compressor; the device includes: An operating mode determination module is used to acquire first temperature data and determine the operating mode based on the first temperature data; wherein, the first temperature data includes the temperature data of the vehicle components; The target channel determination module is used to determine the target channel corresponding to the target vehicle component if the operating mode indicates cooling the target vehicle component. The solenoid valve of the target channel is controlled, and the compressor and / or the first air conditioning system are controlled, so that the refrigerant cools the target vehicle component through the target channel, the first condenser and the first evaporator.

[0007] A vehicle includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the control method of the thermal management system described above.

[0008] A computer-readable storage medium storing a computer program that, when executed by a processor, implements the control method of the thermal management system described above.

[0009] The embodiments of the present invention have the following advantages: by controlling the compressor and / or the first air conditioning system, the target vehicle components are cooled by refrigerant, and / or the target vehicle components are directly cooled by refrigerant through the corresponding target channel, the cooling requirements of the target vehicle components can be met even without the water cooling system. The wiring of the thermal management system is simplified, which not only improves the reliability and stability of the thermal management system, but also meets the requirements of lightweight vehicle design by eliminating components such as water pumps. Moreover, the operating mode is determined based on the first temperature data to cool the target vehicle components with different needs, which can also improve the overall energy efficiency of the thermal management system and avoid energy waste. Attached Figure Description

[0010] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a flowchart illustrating the steps of a control method for a thermal management system according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a thermal management system provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of another thermal management system provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the refrigerant flow direction in a driving mode provided by an embodiment of the present invention; Figure 5 This is a schematic diagram of the refrigerant flow direction in a direct battery cooling mode according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the refrigerant flow direction in an air conditioning cooling mode according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the refrigerant flow direction in a hybrid mode of air conditioning refrigeration and battery direct cooling provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the refrigerant flow direction in a first motor and battery cooling hybrid mode provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the refrigerant flow direction in a low-load cooling mode according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the refrigerant flow direction in a rapid acceleration and deceleration test mode provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the refrigerant flow direction in a high-load cooling mode according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the refrigerant flow direction in a heat pump mode provided by an embodiment of the present invention; Figure 13 This is a schematic diagram of the refrigerant flow direction in a heat recovery mode provided by an embodiment of the present invention; Figure 14 This is a schematic diagram of the refrigerant flow direction in a heat pump and heat recovery hybrid mode provided by an embodiment of the present invention; Figure 15 This is a schematic diagram of the refrigerant flow direction for high-temperature defrosting and demisting provided in an embodiment of the present invention; Figure 16 This is a schematic diagram of the refrigerant flow direction for low-temperature defrosting and demisting provided in an embodiment of the present invention; Figure 17 This is a structural block diagram of a control device for a thermal management system provided in an embodiment of the present invention. Detailed Implementation

[0012] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0013] Reference Figure 1 This diagram illustrates a flowchart of a control method for a thermal management system according to an embodiment of the present invention. The method is applied to a vehicle. The thermal management system includes: multiple vehicle components; a first air conditioning system including a first evaporator; a compressor, wherein the refrigerant outlet of the compressor is connected to one end of a first condenser, the other end of the first condenser is connected to one end of each of the vehicle components, and one end of the first evaporator is connected via different channels, each channel being equipped with a solenoid valve; the other end of each vehicle component is connected to the other end of the first evaporator and to the refrigerant inlet of the compressor. The method may specifically include the following steps: Step 101: Obtain first temperature data and determine the operating mode based on the first temperature data; wherein, the first temperature data includes the temperature data of the vehicle components; Step 102: If the operating mode indicates cooling the target vehicle component, determine the target channel corresponding to the target vehicle component; Step 103: Control the solenoid valve of the target channel and control the compressor and / or the first air conditioning system to allow refrigerant to cool the target vehicle component through the target channel, the first condenser and the first evaporator.

[0014] In this embodiment, as Figure 2 The diagram shows a schematic of a thermal management system, which includes: multiple vehicle components (taking two vehicle components as an example, including vehicle component 1 and vehicle component 2); a first air conditioning system, including a first evaporator; a compressor, the refrigerant outlet of which is connected to one end of a first condenser, the other end of which is connected to one end of each vehicle component, and one end of the first evaporator is connected through different channels, each channel being equipped with a solenoid valve; the other end of each vehicle component is connected to the other end of the first evaporator and to the refrigerant inlet of the compressor.

[0015] The first condenser is used for heat exchange with the refrigerant released from the compressor's refrigerant outlet, absorbing heat from the high-temperature, high-pressure gaseous refrigerant to convert it into a liquid state. In practical applications, the first condenser can be a non-subcooling condenser, meaning the temperature of the gaseous refrigerant is reduced to its saturation temperature to convert it into a liquid state without further cooling the liquid refrigerant.

[0016] The first evaporator is used to exchange heat with the liquid refrigerant, releasing heat to convert the liquid refrigerant into a gaseous state, thereby lowering the outside temperature.

[0017] Vehicle components refer to various parts inside a vehicle that require heat dissipation to ensure normal operation, such as the engine and battery.

[0018] The primary temperature data refers to various temperature data, both inside and outside the vehicle, including the temperature data of vehicle components, to determine whether cooling of these components is necessary. In practical applications, the primary temperature data may also include ambient temperature data outside the vehicle and ambient temperature data inside the vehicle.

[0019] Operating mode refers to the operating mode of the thermal management system. The thermal management system controls various equipment in different ways according to the instructions of different operating modes. Operating modes can be predefined or dynamically generated according to preset rules, such as cooling mode (cooling vehicle components through air conditioning), direct cooling mode (directly cooling vehicle components through refrigerant), and a hybrid mode of direct cooling and cooling.

[0020] Refrigerant, a medium used for heat transfer and heat exchange, can be gaseous, liquid, or two-phase (gas-liquid mixture) and its circulation is controlled by a controller. In practical applications, R454C refrigerant can be used, providing approximately 15kW of cooling capacity to meet the cooling or refrigeration needs of various vehicle components.

[0021] In step 101, the operating mode is determined based on the first temperature data. For example, when the first temperature data indicates that the temperature of one or more vehicle components exceeds a threshold, the operating mode is determined to be direct cooling mode.

[0022] In practical applications, if it is further determined that the difference between the ambient temperature inside the vehicle and the ambient temperature outside the vehicle exceeds a threshold, the operating mode can be determined to be a hybrid mode of direct cooling and refrigeration to improve the cooling effect.

[0023] In step 102, if the operating mode indicates cooling the target vehicle component, and the target vehicle component is a vehicle component that needs to be cooled, then the target channel corresponding to the target vehicle component is determined.

[0024] In some examples, the other end of the first condenser is connected to the first evaporator via channel 1, to vehicle component 1 via channel 2, and to vehicle component 2 via channel 3. When vehicle component 1 is the target vehicle component that needs to be cooled, channel 2 corresponding to vehicle component 1 is determined as the target channel.

[0025] In step 103, once the target channel is determined, the solenoid valve corresponding to the target channel is controlled to adjust the opening of the target channel, thereby regulating the refrigerant flow. The solenoid valves for other channels can be controlled according to actual needs.

[0026] Continuing with the example above, if vehicle component 1 is determined to be the target vehicle component, then the solenoid valve of control channel 2 is partially or fully opened. For the solenoid valve of channel 1, if the operating mode is a mixed cooling and direct cooling mode, and the first air conditioning system needs to be controlled for cooling, then the solenoid valve of channel 1 is opened; otherwise, the solenoid valve of channel 1 is kept closed or controlled to be closed. For the solenoid valve of channel 3, if it is in the closed state, it remains closed; if it is not in the closed state, then the solenoid valve of channel 2 is closed to shut down channel 2.

[0027] Furthermore, the compressor and / or the first air conditioning system are controlled to allow refrigerant to cool the target vehicle components through the target passage, the first condenser, and the first evaporator.

[0028] Specifically, by controlling the compressor, the refrigerant is circulated, so that the refrigerant first passes through the first condenser to lower its temperature, and then directly cools the target vehicle components through the target channel, and / or provides refrigerant to the first evaporator of the first air conditioning system. By controlling the first air conditioning system to perform cooling, the ambient temperature inside the vehicle is lowered, thereby cooling the vehicle components.

[0029] Following the example above, if the operating mode is direct cooling mode, the solenoid valve of channel 2 is opened and the solenoid valves of channels 1 and 3 are closed, controlling the compressor to drive the refrigerant circulation, so that the refrigerant directly cools vehicle component 1 through the first condenser and channel 2; if the operating mode is indicated as a direct cooling and refrigeration mixed mode, then based on the above direct cooling mode, the solenoid valve of channel 1 is opened to provide refrigerant to the first evaporator of the first air conditioning system, and the temperature inside the vehicle is reduced by controlling the first air conditioning system, thereby cooling the vehicle components.

[0030] In some embodiments of the present invention, the vehicle component includes a first motor and a battery cooling component. The other end of the first condenser is connected to one end of the first evaporator via a first channel, to one end of the first motor via a second channel, and to one end of the battery cooling component via a third channel. The step of controlling the solenoid valve of the target channel and controlling the compressor and / or the first air conditioning system includes: When the target vehicle component is the first motor, the solenoid valves of the first channel and the second channel are controlled to adjust the opening degree of the first channel and the second channel; The compressor and the first air conditioning system are controlled so that the refrigerant cools the first motor through the first channel, the first evaporator, and the second channel; When the target vehicle component is the battery cooling component, the solenoid valve of the third channel is controlled to adjust the opening degree of the third channel; The compressor is controlled so that the refrigerant cools the battery cooling component through the third channel.

[0031] Battery cooling components, such as battery direct cooling plates, are used to cool the vehicle's battery. The first motor is used to provide driving force for the vehicle. When it gets very hot during operation, it needs to be cooled to ensure performance and stability. In this embodiment, when the operating mode indicates that the first motor needs to be cooled, the solenoid valves of the first channel and the third channel are controlled to adjust the opening of the corresponding channels, and the first air conditioning system is controlled to use the refrigerant that enters the first evaporator through the first channel for cooling to reduce the ambient temperature and cool the motor. In addition, the compressor is controlled to allow the refrigerant that passes through the first condenser and the second channel to directly cool the first motor to ensure the cooling effect of the first motor. When the operating mode indicates that the battery cooling components need to be cooled, the solenoid valve of the third channel is controlled to adjust the opening of the third channel, and the compressor is controlled to drive the refrigerant circulation, so that the refrigerant passes through the first condenser and the third channel to directly cool the battery cooling plate to meet the battery cooling requirements.

[0032] In some embodiments of the present invention, the thermal management system further includes a second air conditioning system, the second air conditioning system including a second evaporator, one end of the second evaporator being connected to the other end of the first condenser via a fourth channel; the vehicle components further include a charger, a second motor and a domain controller, one end of the second motor being connected to the other end of the first condenser via a fifth channel, the other end of the second motor being connected to the other end of the second evaporator and connected to the refrigerant inlet; the charger is connected to the first motor, and the domain controller is connected to the second motor.

[0033] The second air conditioning system is another air conditioning system used to assist in cooling or heating the vehicle interior in order to meet higher thermal management requirements. The second motor enhances the vehicle's driving force and improves vehicle performance by adding an extra motor; it releases heat during its operation. A charger is used to convert electrical energy to charge a vehicle, such as an OBC (On-Board Charger). Chargers also release heat during operation, and their temperature needs to be controlled within a certain level to ensure safety and stability. Domain controllers are used to control components within a vehicle's functional domains. They require processing complex data to perform corresponding controls, thus generating significant heat. Therefore, cooling is essential to ensure proper operation. Domain controllers can be domain master controllers (DMCs), and they often incorporate intelligent driving modules to process intelligent driving data and control relevant vehicle components.

[0034] In some examples, such as Figure 3 The thermal management system shown has a front motor three-in-one unit (three-in-one refers to the integration of motor, motor controller, and reducer into one unit) as the first motor, a rear motor three-in-one unit as the second motor, a battery direct cooling plate as the battery cooling component, a non-subcooled condenser as the first condenser, a front HVAC (Heating, Ventilation, and Air Conditioning) system as the first air conditioning system, and an evaporator within the first air conditioning system as the first evaporator. The rear HVAC system as the second air conditioning system, and an evaporator within the second air conditioning system as the second evaporator. One end of the non-subcooled condenser is connected to the refrigerant inlet of the compressor, and the other end is connected to the first evaporator via a first channel (equipped with solenoid valve EXV1), to the front motor three-in-one unit via a second channel (equipped with solenoid valve EXV4), to the battery direct cooling plate via a third channel (equipped with solenoid valve EXV2), to the second evaporator via a fourth channel (equipped with solenoid valve EXV6), and to the rear motor three-in-one unit via a fifth channel (equipped with solenoid valve EXV5). The DCDC+OBC (DC-DC converter on-board charger) is the charger, connected in series with the front motor; the DMC (Intelligent Driving Module) is the domain controller, connected in series with the rear motor.

[0035] In practical applications, the diameter of EXV1 can be configured to 2.5mm, the diameter of EXV2 can be configured to 3.5mm, the diameter of EXV6 can be configured to 1.65mm, and EXV3 and EXV7 can be configured as fully open valves (EXV3 and EXV7 can also be combined into a proportional valve).

[0036] In some embodiments, such as Figure 3 As shown, the heating module of the second air conditioning system can use an air-cooled PTC (Positive Temperature Coefficient) heater for auxiliary heating, avoiding excessively long heat pipes and poor heat pump performance due to environmental influences.

[0037] In some embodiments, the second air conditioning system, the second motor, and the corresponding channels, solenoid valves, etc., are configurable components.

[0038] In some examples, if the operating mode indicates that cooling of the first motor and the second motor is required, such as in driving mode, then... Figure 4 As shown, solenoid valves EXV1, EXV4, EXV5, and EXV6 are opened to open their corresponding channels, and solenoid valve EXV3 between the compressor and the non-subcooled condenser is opened; the other solenoid valves are closed. This controls the compressor to drive the refrigerant circulation, causing the refrigerant to travel along... Figure 4 The solid arrows indicate the direction of the refrigerant flow through the corresponding components. The refrigerant flows through the first evaporator to cool the first air conditioning system, then through the first motor, second motor, charger, and domain controller for cooling, and finally enters the compressor through the refrigerant inlet for recirculation. In driving mode, the air conditioning system requires less refrigerant, but even at its lowest compressor speed, there is still excess cooling capacity. Therefore, this excess cooling capacity can be used to cool the first motor and related electric drive systems, improving energy efficiency and avoiding energy waste.

[0039] In some examples, if the operating mode indicates that the battery needs cooling, such as direct battery cooling mode, then... Figure 5 As shown, opening solenoid valves EXV2 and EXV3 and closing other solenoid valves controls the compressor to push the refrigerant circulation, causing the refrigerant to flow along... Figure 5 The solid arrows shown flow through the corresponding components, directly cooling the battery cooling components.

[0040] In some examples, the operating mode indicator may only provide cooling functionality, such as an air conditioning cooling operating mode. Figure 6 As shown, opening solenoid valves EXV1, EXV3, and EXV6 and closing other solenoid valves controls the compressor to push the refrigerant circulation, causing the refrigerant to flow along... Figure 6 The solid arrows indicate that the refrigerant flows through the corresponding components and finally enters the compressor through the refrigerant inlet for circulation. This provides refrigerant to the first and second evaporators and controls the cooling operation of the first and second air conditioning systems.

[0041] In some examples, if the operating mode indicates the need for both cooling and cooling of battery cooling components, such as a mixed mode of air conditioning cooling and direct battery cooling, as... Figure 7 As shown, opening solenoid valves EXV1, EXV2, EXV3, and EXV6, and closing other solenoid valves controls the compressor to push the refrigerant circulation, causing the refrigerant to flow along... Figure 7The solid arrows indicate that the refrigerant flows through the corresponding components and finally enters the compressor through the refrigerant inlet for circulation. The refrigerant supplies refrigerant to the first and second evaporators, controls the first air conditioning system for cooling, and is directly cooled by the battery cooling components.

[0042] In some examples, the operating mode cools both the first motor and the battery cooling components, such as a hybrid mode for cooling both the first motor and the battery. Figure 8 As shown, opening solenoid valves EXV2, EXV3, and EXV4 and closing other solenoid valves controls the compressor to push the refrigerant circulation, causing the refrigerant to flow along... Figure 8 The solid arrows indicate that the refrigerant flows through the corresponding components and finally enters the compressor through the refrigerant inlet for circulation. The refrigerant is directly cooled by the first motor, the second motor, the domain controller, the charger, and the battery cooling components.

[0043] In some examples, if the operating mode indicates cooling of the second motor, such as a low-load cooling mode, then... Figure 9 As shown, open solenoid valves EXV3, EXV1, and EXV5 to allow the refrigerant to flow along... Figure 9 The solid arrows indicate that the refrigerant flows through the corresponding components and finally enters the compressor through the refrigerant inlet for circulation. The refrigerant passes through the first evaporator to provide cooling for the first air conditioning system, and then passes through the second motor and domain controller for direct cooling.

[0044] In some examples, the operating mode may indicate that the first and second motors are cooled, but not refrigerated (the air conditioning system is not working), such as in a rapid acceleration / deceleration test mode. Figure 10 As shown, open solenoid valves EXV3, EXV4, EXV5, and EXV2 to allow the refrigerant to flow along... Figure 10 The solid arrows indicate that the refrigerant flows through the corresponding components and finally enters the compressor through the refrigerant inlet for circulation. The refrigerant is directly cooled by the first motor, charger, second motor, and domain controller.

[0045] In some examples, the operating mode indicates cooling of the first motor, the second motor, and battery cooling components, such as a high-load cooling mode. Figure 11 As shown, open solenoid valves EXV3, EXV1, EXV4, EXV5, and EXV2 to allow the refrigerant to flow along... Figure 11 The solid arrows indicate that the refrigerant flows through the corresponding components and finally enters the compressor through the refrigerant inlet for circulation. The refrigerant passes through the first evaporator and the second evaporator to provide refrigerant cooling for the first and second air conditioning systems, and is directly cooled by the first motor, charger, second motor, and domain controller.

[0046] In some embodiments of the present invention, the other end of each vehicle component is connected to a second connector and is connected to the refrigerant inlet through the second connector, and a coaxial tube is provided between the refrigerant inlet and the second connector.

[0047] Connectors are used to connect the channels through which the refrigerant flows; A coaxial tube is a structure consisting of two concentrically fitted inner and outer tubes used for heat exchange of refrigerant.

[0048] In some examples, such as Figure 3 As shown, the first evaporator, the first motor, the second motor, and the battery cooling component are connected to the second connector. A coaxial tube 1 is provided between the second connector and the refrigerant inlet of the compressor. The coaxial tube 1 can be used to exchange the heat of the refrigerant to the outside before it enters the compressor.

[0049] In this embodiment, by setting a coaxial tube between the refrigerant inlet and the second connector, the refrigerant can dissipate heat before entering the compressor, which can accelerate the refrigerant circulation and improve the operating efficiency of the thermal management system.

[0050] In practical applications, coaxial tubes can be added to the battery cooling components. The refrigerant absorbs heat through the coaxial tube and becomes superheated, existing as a two-phase refrigerant (a mixture of gaseous and liquid states) within the battery pack, thus facilitating uniform heat control of the battery. For example... Figure 3 As shown, a coaxial tube 2 can be installed on the battery direct cooling plate. The length of coaxial tube 1 is >250mm, and the length of coaxial tube 2 is 150~250mm; In some embodiments of the present invention, the first air conditioning system further includes a second condenser, the refrigerant outlet is connected to one end of the first condenser via a first connector, and is also connected to one end of the second condenser; the other end of the second condenser is connected to one end of a third condenser, and the other end of the third condenser is connected to the refrigerant inlet, wherein the third condenser is an evaporative condenser, and the method further includes: If the operating mode indicates heating, the compressor and the first air conditioning system are controlled to allow refrigerant to pass through the second condenser and the third condenser to heat the vehicle.

[0051] The second condenser is used in the first air conditioning system to generate heat by absorbing heat from the refrigerant; The third condenser is an evaporative condenser, used to evaporate the refrigerant to further heat the environment.

[0052] In some examples, such as Figure 3As shown, the refrigerant outlet is connected to one end of the non-subcooled condenser (first condenser) via a first connector, and to one end of the internal cooling condenser (second condenser) within the first air conditioning system. The other end of the internal cooling condenser is connected to one end of the evaporative condenser (third condenser) via a one-way valve, a liquid receiver, and other components. The evaporative condenser is connected to the refrigerant inlet of the compressor and is also equipped with a fan. A solenoid valve EXV7 is also installed between the refrigerant outlet and the internal cooling condenser.

[0053] If the operating mode is indicated as heating, such as heat pump mode, then... Figure 12 As shown, EXV3 is turned off and EXV7 is turned on, controlling the compressor to push the refrigerant circulation, causing the refrigerant to travel along... Figure 12 The solid arrows indicate that the refrigerant flows through the corresponding components and finally enters the compressor through the refrigerant inlet for circulation. The refrigerant passes through the internal cooling condenser to control the first air conditioning system for heating; furthermore, the refrigerant evaporates through the evaporative condenser, releasing heat to the outside to heat the vehicle, thus achieving pure air source heat pump heating.

[0054] In some embodiments of the present invention, the other end of each of the vehicle components is also connected to a different air pressure and temperature sensor, and the solenoid valve controlling the target channel includes: The second temperature data and pressure data of the refrigerant are obtained through the air pressure and temperature sensor connected to the target vehicle component. Based on the second temperature data and the air pressure data, the solenoid valve of the target channel is controlled to adjust the opening degree of the target channel.

[0055] A pressure-temperature sensor (PT sensor) is a sensor that can collect pressure and temperature data simultaneously or separately. The pressure-temperature sensor connected to the other end of each vehicle component can collect the pressure data and the second temperature data of the refrigerant flowing through that vehicle component.

[0056] In practice, the opening degree of the solenoid valve in the target channel can be determined by the air pressure data and the second temperature data, thereby controlling the solenoid valve in the target channel, adjusting the opening degree of the target channel, and thus adjusting the refrigerant flow rate.

[0057] In some examples, the saturation temperature of the refrigerant at saturation pressure can be calculated using the refrigerant's gas pressure data and second temperature data. Then, the superheat of the refrigerant can be calculated, and the opening of the solenoid valve can be determined based on the superheat. If the superheat is too large, the opening of the solenoid valve in the target channel can be increased to increase the opening of the target channel, thereby increasing the refrigerant flow and accelerating the thermal cycle.

[0058] In some examples, such as Figure 3As shown, the thermal management system is equipped with PT sensors PT1, PT2, PT3, and PT4. Data acquired by PT1 is used to control solenoid valve EXV7, data acquired by PT2 is used to control solenoid valves EXV1 and EXV4, data acquired by PT3 is used to control solenoid valves EXV5 and EXV6, and data acquired by PT4 is used to control solenoid valve EXV2. EXV1 and EXV4 share sensor PT2, while EXV5 and EXV6 share sensor PT4, which saves on air conditioning piping. The first and second air conditioning systems use different sensors because the two systems operate intermittently. Under normal driving conditions, the cooling demand of the front air conditioning and the rear motor is relatively high; therefore, using separate PT sensors facilitates precise control.

[0059] In practical applications, the PT sensor can measure air pressure within the following ranges: high pressure ≥ 3.5 MPa, low pressure ≤ 0.01 MPa.

[0060] In this embodiment, the electromagnetic control of the target channel is performed based on the refrigerant pressure data and the second temperature data. This allows for precise control of the refrigerant flow rate, ensuring that the refrigerant flow rate matches the load requirements, improving the refrigerant cooling effect on vehicle components, and enhancing the stability and reliability of the thermal management system.

[0061] In some embodiments of the present invention, the first air conditioning system further includes a second condenser, the refrigerant outlet is connected to one end of the first condenser via a first connector and to one end of the second condenser, the other end of the second condenser is connected to the first motor via a second channel, and the method further includes: If the operating mode indicates heat recovery, control the solenoid valve of the second channel to adjust the opening of the second channel; The compressor and the first air conditioning system are controlled so that the refrigerant recovers the heat generated by the first motor through the second condenser and the second channel.

[0062] In this embodiment, if the operating mode indicates heat recovery, that is, the waste heat of the first motor is recovered for heating or other purposes.

[0063] In some examples, such as Figure 13 As shown, if the operating mode indicates heat recovery from the first and second motors, such as heat recovery mode, the solenoid valves EXV7, EXV4, and EXV5 between the refrigerant outlet and the internal condenser are opened, controlling the compressor to drive the refrigerant circulation, causing the refrigerant to flow along... Figure 13 The solid arrows indicate that the refrigerant flows through the corresponding components and finally enters the compressor through the refrigerant inlet for circulation. The refrigerant passes through the internal cooling condenser, the first motor, and the second motor, recovering heat from the first and second motors.

[0064] In some examples, if the operating mode indicates both heating and heat recovery, such as a mixed mode of heat pump and heat recovery, like... Figure 14 As shown, open solenoid valves EXV7, EXV4, EXV5, and EXV8, and close the other solenoid valves to control the compressor to drive the refrigerant circulation, allowing the refrigerant to travel along... Figure 14 The solid arrows indicate that the refrigerant flows through the corresponding components and finally enters the compressor through the refrigerant inlet for circulation. The refrigerant recovers heat from the first and second motors. The first air conditioning system uses refrigerant for heating through the internal cooling condenser and releases heat through the evaporative condenser.

[0065] In practical applications, a first condenser, a second condenser, and a third condenser can also be used for defrosting and demisting.

[0066] In some examples, if the operating mode indicates defrosting and defogging in a high-temperature environment (outside temperature is higher than the interior temperature), such as a high-temperature defrosting and defogging mode, then... Figure 15 As shown, opening solenoid valves EXV3, EXV7, and EXV1 controls the compressor to push the refrigerant circulation, causing the refrigerant to flow along... Figure 15 The solid arrows indicate that the refrigerant flows through the corresponding components and finally enters the compressor through the refrigerant inlet for circulation. The refrigerant passes through the internal cooling condenser and the first evaporator of the first air conditioning system, controlling the first air conditioning system to raise the temperature inside the vehicle, reducing or eliminating the temperature difference between the inside and outside of the vehicle. The first evaporator then lowers the temperature, achieving defrosting and defogging.

[0067] In some examples, the operating mode indicates defrosting and defogging in low-temperature environments (outside temperature is lower than the vehicle interior temperature), such as a low-temperature defrosting and defogging mode. Figure 16 As shown, opening solenoid valves EXV3, EXV7, and EXV1, and closing other solenoid valves controls the compressor to push the refrigerant circulation, causing the refrigerant to flow along... Figure 15 The solid arrows indicate that the refrigerant flows through the corresponding components and finally enters the compressor through the refrigerant inlet for circulation. The refrigerant passes through the internal cooling condenser, the first evaporator, and the evaporative condenser of the first air conditioning system, controlling the first air conditioning system to lower the temperature inside the vehicle, reducing or eliminating the temperature difference between the inside and outside of the vehicle. Then, by controlling the heating function of the first air conditioning system and the evaporative condenser to evaporate the refrigerant, the temperature inside the vehicle is raised, achieving defrosting and defogging.

[0068] The embodiments of the present invention have the following advantages: by controlling the compressor and / or the first air conditioning system, the target vehicle components are cooled by refrigerant, and / or the target vehicle components are directly cooled by refrigerant through the corresponding target channel, the cooling requirements of the target vehicle components can be met even without the water cooling system. The wiring of the thermal management system is simplified, which not only improves the reliability and stability of the thermal management system, but also meets the requirements of lightweight vehicle design by eliminating components such as water pumps. Moreover, the operating mode is determined based on the first temperature data to cool the target vehicle components with different needs, which can also improve the overall energy efficiency of the thermal management system and avoid energy waste.

[0069] It should be noted that, for the sake of simplicity, the method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0070] Reference Figure 17 This diagram illustrates a structural schematic of a control device for a vehicle's thermal management system according to an embodiment of the present invention. The device is applied to a vehicle. The thermal management system includes: multiple vehicle components; a first air conditioning system including a first evaporator; a compressor, wherein the refrigerant outlet of the compressor is connected to one end of a first condenser, the other end of the first condenser is connected to one end of each of the vehicle components, and one end of the first evaporator is connected via different channels, each channel being equipped with a solenoid valve; the other end of each vehicle component is connected to the other end of the first evaporator and to the refrigerant inlet of the compressor. Specifically, the device may include the following modules: The operating mode determination module 1701 is used to acquire first temperature data and determine the operating mode based on the first temperature data; wherein, the first temperature data includes the temperature data of the vehicle components; The target channel determination module 1702 is used to determine the target channel corresponding to the target vehicle component if the operating mode indicates cooling the target vehicle component. The cooling control module 1703 is used to control the solenoid valve of the target channel and control the compressor and / or the first air conditioning system to cool the target vehicle component through the target channel, the first condenser and the first evaporator.

[0071] In some embodiments of the present invention, the vehicle component includes a first motor and a battery cooling component. The other end of the first condenser is connected to one end of the first evaporator via a first channel, to one end of the first motor via a second channel, and to one end of the battery cooling component via a third channel. The cooling control module 1703 includes: The first solenoid valve control submodule is used to control the solenoid valves of the first channel and the second channel when the target vehicle component is the first motor, so as to adjust the opening degree of the first channel and the second channel. The first motor cooling submodule is used to control the compressor and the first air conditioning system so that the refrigerant cools the first motor through the first channel, the first evaporator and the second channel; The second solenoid valve control submodule is used to control the solenoid valve of the third channel to adjust the opening degree of the third channel when the target vehicle component is the battery cooling component. A battery cooling component cooling submodule is used to control the compressor so that the refrigerant cools the battery cooling component through the third channel.

[0072] In some embodiments of the present invention, the first air conditioning system further includes a second condenser, wherein the refrigerant outlet is connected to one end of the first condenser via a first connector and to one end of the second condenser; the other end of the second condenser is connected to one end of a third condenser, and the other end of the third condenser is connected to the refrigerant inlet; the third condenser is an evaporative condenser, and the device further includes: A heating control module is used to control the compressor and the first air conditioning system if the operating mode indicates heating, so that the refrigerant passes through the second condenser and the third condenser to heat the vehicle.

[0073] In some embodiments of the present invention, the first air conditioning system further includes a second condenser, the refrigerant outlet is connected to one end of the first condenser via a first connector and to one end of the second condenser, the other end of the second condenser is connected to the first motor via a second channel, and the device further includes: A heat recovery control module is used to control the solenoid valve of the second channel to adjust the opening degree of the second channel if the operating mode indicates heat recovery. The compressor and the first air conditioning system are controlled so that the refrigerant recovers the heat generated by the first motor through the second condenser and the second channel.

[0074] In some embodiments of the present invention, the other end of each of the vehicle components is also connected to different air pressure and temperature sensors, and the cooling control module 1703 further includes: The temperature data acquisition submodule is used to acquire the second temperature data and pressure data of the refrigerant through the air pressure and temperature sensor connected to the target vehicle component; The third solenoid valve control submodule is used to control the solenoid valve of the target channel according to the second temperature data and the air pressure data, so as to adjust the opening degree of the target channel.

[0075] In some embodiments of the present invention, the other end of each vehicle component is connected to a second connector and is connected to the refrigerant inlet through the second connector, and a coaxial tube is provided between the refrigerant inlet and the second connector.

[0076] In some embodiments of the present invention, the thermal management system further includes a second air conditioning system, the second air conditioning system including a second evaporator, one end of the second evaporator being connected to the other end of the first condenser via a fourth channel; the vehicle components further include a charger, a second motor and a domain controller, one end of the second motor being connected to the other end of the first condenser via a fifth channel, the other end of the second motor being connected to the other end of the second evaporator and connected to the refrigerant inlet; the charger is connected to the first motor, and the domain controller is connected to the second motor.

[0077] Some embodiments of the present invention also provide a vehicle that may include a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the control method of the above thermal management system.

[0078] Some embodiments of the present invention also provide an electronic device, which may include a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, it implements the control method of the above-mentioned thermal management system.

[0079] Some embodiments of the present invention also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the control method of the above-mentioned thermal management system.

[0080] Some embodiments of the present invention also provide a computer program product, including a computer program that, when executed by a processor, implements the control method of the above-mentioned thermal management system.

[0081] As the device embodiment is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0082] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0083] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0084] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0085] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the aforementioned element.

[0086] The control method, device, vehicle, and medium of the provided thermal management system have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A control method for a thermal management system, characterized in that, Applied to vehicles, the thermal management system includes: multiple vehicle components; a first air conditioning system including a first evaporator; a compressor, wherein the refrigerant outlet of the compressor is connected to one end of a first condenser, the other end of the first condenser is connected to one end of each of the vehicle components, and one end of the first evaporator is connected through different channels, each channel being equipped with a solenoid valve; the other end of each vehicle component is connected to the other end of the first evaporator and to the refrigerant inlet of the compressor; the method includes: Acquire first temperature data and determine the operating mode based on the first temperature data; wherein, the first temperature data includes the temperature data of the vehicle components; If the operating mode indicates cooling a target vehicle component, determine the target channel corresponding to the target vehicle component; The solenoid valve of the target channel is controlled, and the compressor and / or the first air conditioning system are controlled, so that the refrigerant cools the target vehicle component through the target channel, the first condenser and the first evaporator.

2. The method according to claim 1, characterized in that, The vehicle components include a first motor and a battery cooling component. The other end of the first condenser is connected to one end of the first evaporator via a first channel, to one end of the first motor via a second channel, and to one end of the battery cooling component via a third channel. The solenoid valve controlling the target channel, and controlling the compressor and / or the first air conditioning system, includes: When the target vehicle component is the first motor, the solenoid valves of the first channel and the second channel are controlled to adjust the opening degree of the first channel and the second channel; The compressor and the first air conditioning system are controlled so that the refrigerant cools the first motor through the first channel, the first evaporator, and the second channel; When the target vehicle component is the battery cooling component, the solenoid valve of the third channel is controlled to adjust the opening degree of the third channel; The compressor is controlled so that the refrigerant cools the battery cooling component through the third channel.

3. The method according to claim 1, characterized in that, The first air conditioning system further includes a second condenser. The refrigerant outlet is connected to one end of the first condenser via a first connector and to one end of the second condenser. The other end of the second condenser is connected to one end of a third condenser, and the other end of the third condenser is connected to the refrigerant inlet. The third condenser is an evaporative condenser. The method further includes: If the operating mode indicates heating, the compressor and the first air conditioning system are controlled to allow refrigerant to pass through the second condenser and the third condenser to heat the vehicle.

4. The method according to claim 2, characterized in that, The first air conditioning system further includes a second condenser. The refrigerant outlet is connected to one end of the first condenser via a first connector and to one end of the second condenser. The other end of the second condenser is connected to the first motor via a second channel. The method further includes: If the operating mode indicates heat recovery, control the solenoid valve of the second channel to adjust the opening of the second channel; The compressor and the first air conditioning system are controlled so that the refrigerant recovers the heat generated by the first motor through the second condenser and the second channel.

5. The method according to claim 1, characterized in that, The other end of each of the vehicle components is also connected to a different air pressure and temperature sensor, and the solenoid valve controlling the target channel includes: The second temperature data and pressure data of the refrigerant are obtained through the air pressure and temperature sensor connected to the target vehicle component. Based on the second temperature data and the air pressure data, the solenoid valve of the target channel is controlled to adjust the opening degree of the target channel.

6. The method according to any one of claims 1-5, characterized in that, The other end of each vehicle component is connected to a second connector and is connected to the refrigerant inlet via the second connector, and a coaxial tube is provided between the refrigerant inlet and the second connector.

7. The method according to claim 2 or 4, characterized in that, The thermal management system further includes a second air conditioning system, which includes a second evaporator. One end of the second evaporator is connected to the other end of the first condenser via a fourth channel. The vehicle components also include a charger, a second motor, and a domain controller. One end of the second motor is connected to the other end of the first condenser via a fifth channel, and the other end of the second motor is connected to the other end of the second evaporator and to the refrigerant inlet. The charger is connected to the first motor, and the domain controller is connected to the second motor.

8. A control device for a vehicle's thermal management system, characterized in that, Applied to vehicles, the thermal management system includes: multiple vehicle components; a first air conditioning system including a first evaporator; a compressor, wherein the refrigerant outlet of the compressor is connected to one end of a first condenser, the other end of the first condenser is connected to one end of each of the vehicle components, and one end of the first evaporator is connected via different channels, each channel being equipped with a solenoid valve; the other end of each vehicle component is connected to the other end of the first evaporator and to the refrigerant inlet of the compressor; the device includes: An operating mode determination module is used to acquire first temperature data and determine the operating mode based on the first temperature data; wherein, the first temperature data includes the temperature data of the vehicle components; The target channel determination module is used to determine the target channel corresponding to the target vehicle component if the operating mode indicates cooling the target vehicle component. A cooling control module is used to control the solenoid valve of the target channel and control the compressor and / or the first air conditioning system to cool the target vehicle components through the target channel, the first condenser and the first evaporator.

9. A vehicle, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the control method of the thermal management system as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, which, when executed by a processor, implements the control method of the thermal management system as described in any one of claims 1 to 7.

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