Integrated thermal management system and method

Abstract

The application discloses an integrated thermal management system and method, which comprises a cab refrigeration pipeline, a battery refrigeration pipeline, a battery circulation pipeline, an engine intake pipeline, a intercooler circulation pipeline, a battery, a battery heat exchanger and a water-cooled intercooler. The battery is arranged on the battery circulation pipeline. The battery refrigeration pipeline is connected in parallel with part of the cab refrigeration pipeline. The battery heat exchanger is arranged on the battery refrigeration pipeline and the battery circulation pipeline, and is used for heat exchange between a refrigerant working medium in the battery refrigeration pipeline and cooling liquid in the battery circulation pipeline. The water-cooled intercooler is arranged on the engine intake pipeline and the intercooler circulation pipeline, and is used for heat exchange between air entering the engine intake pipeline and the cooling liquid in the intercooler circulation pipeline. The application further comprises a first connection control assembly, which is used for controlling the connection or disconnection of the battery circulation pipeline and the intercooler circulation pipeline. By using the application, the engine intake temperature of the hybrid vehicle can be effectively controlled, the engine power can be improved, and the energy consumption can be reduced.

Description

Technical Field

[0001] This invention relates to the field of hybrid power technology, and more specifically to an integrated thermal management system and method. Background Technology

[0002] Hybrid Electric Vehicles (HEVs) are vehicles that utilize two or more power sources simultaneously, typically referring to gasoline-electric hybrid vehicles. These vehicles use both gasoline and electric power for propulsion. Their advantages include the electric motor driving the vehicle during start-up and stop, with the engine only engaging when a certain speed is reached. This allows the engine to operate at its optimal condition, resulting in good power performance. Furthermore, the combined operation of the electric motor and the engine improves fuel efficiency and reduces emissions. The electricity is generated entirely by the engine, requiring only refueling; the battery does not need external charging, as it is recharged through engine and regenerative braking. The key to hybrid vehicles is the hybrid powertrain, whose performance directly affects the overall vehicle performance. Currently, hybrid powertrain assemblies have evolved from a discrete structure of engine and electric motor to an integrated structure of engine, electric motor, and transmission—the integrated hybrid powertrain system.

[0003] Engines can be categorized based on their intake method, including turbocharged, supercharged, and naturally aspirated engines. Regardless of the type, higher intake air temperatures reduce engine power and increase fuel consumption, especially during hot summer months. Therefore, effectively reducing the intake air temperature of hybrid vehicle engines is a crucial issue that the industry needs to address. Summary of the Invention

[0004] This invention provides an integrated thermal management system and method to effectively control the intake air temperature of a hybrid vehicle engine, improve engine power, and reduce energy consumption.

[0005] On one hand, embodiments of the present invention provide an integrated thermal management system, the system comprising: a cab cooling pipeline, a battery cooling pipeline, a battery circulation pipeline, an engine intake pipeline, an intercooler circulation pipeline, a battery, a battery heat exchanger, and a water-cooled intercooler; the battery is disposed on the battery circulation pipeline; The battery cooling pipeline is connected in parallel with part of the cab cooling pipeline; The battery heat exchanger is installed on the battery cooling pipeline and the battery circulation pipeline to enable heat exchange between the refrigerant in the battery cooling pipeline and the coolant in the battery circulation pipeline. The water-cooled intercooler is installed on the engine intake pipe and the intercooler circulation pipe, and is used to allow the air entering the engine intake pipe to exchange heat with the coolant in the intercooler circulation pipe. Also includes: The first connection control component is used to control the connection or disconnection of the battery circulation pipeline and the intercooler circulation pipeline.

[0006] Optionally, the first connection control component includes: First connecting pipe, second connecting pipe, first three-way valve, second three-way valve; The first three-way valve is installed on the battery circulation pipeline; the second three-way valve is installed on the intercooler circulation pipeline; One end of the first connecting pipe is connected to the first three-way valve, and the other end of the first connecting pipe is connected to the intercooler circulation pipeline; One end of the second connecting pipe is connected to the second three-way valve, and the other end of the second connecting pipe is connected to the battery circulation pipeline.

[0007] Optionally, the first connection control component includes a four-way valve simultaneously disposed on the circulation lines of the battery heat exchanger and the intercooler.

[0008] Optionally, an intercooler radiator is provided on the intercooler circulation pipeline; the system further includes: a second connection control component, used to control whether the coolant circulation process in the intercooler circulation pipeline flows through or does not flow through the intercooler radiator.

[0009] Optionally, the second connection control component includes: a fourth connecting pipe and a fourth three-way valve; The fourth three-way valve is installed on the intercooler circulation pipeline; One end of the fourth three-way valve is connected to the second three-way valve, and the other end of the fourth three-way valve is connected to the water-cooled intercooler.

[0010] Optionally, the system further includes: a third connecting pipe, a battery radiator, and a third three-way valve; The battery heat sink is mounted on the third connecting pipe. The third three-way valve is installed on the battery circulation pipeline; One end of the third connecting tube is connected to the battery, and the other end of the third connecting tube is connected to the third three-way valve; The third three-way valve is used to control whether the coolant in the battery circulation pipeline flows through or not through the battery heat exchanger.

[0011] Optionally, a five-way valve may be used instead of the four-way valve and the third three-way valve.

[0012] Optionally, an intercooler radiator is provided on the intercooler circulation pipeline; The first connection control component includes: a six-way valve simultaneously disposed on the battery circulation pipeline and the intercooler circulation pipeline; The system further includes: a third connecting pipe and a fourth connecting pipe; one end of the third connecting pipe is connected to the six-way valve, and the other end of the third connecting pipe is connected to the battery; one end of the fourth connecting pipe is connected to the six-way valve, and the other end of the fourth connecting pipe is connected to the water-cooled intercooler. The first connection control component is also used to control whether the coolant circulation process in the battery circulation pipeline flows through the battery heat exchanger, and to control whether the coolant circulation process in the intercooler circulation pipeline flows through the intercooler radiator.

[0013] Optionally, the driver's cab refrigeration pipeline is connected in series with a compressor, an outdoor condenser, a first expansion valve, and an evaporator in sequence along the refrigerant flow direction; A second expansion valve is installed on the battery cooling pipeline; Both the first expansion valve and the second expansion valve are electronic expansion valves.

[0014] Optionally, a heater is provided on the battery circulation pipeline, and the heater is a PTC heater.

[0015] On the other hand, embodiments of the present invention also provide an integrated thermal management method based on the integrated thermal management system, the method comprising: Real-time acquisition of engine intake air temperature; Determine whether it is necessary to cool the engine intake air based on the engine intake air temperature. If it is necessary to cool the engine intake air, the battery circulation line and the intercooler circulation line are connected, and the battery cooling line is connected to the cab air conditioning system, so as to use the cab air conditioning system to cool the engine intake air. If cooling of the engine intake air is not required, the battery circulation line and the intercooler circulation line are disconnected.

[0016] Optionally, the method further includes: when using the cab air conditioning system to cool the engine intake air, controlling the cab cooling pipes to disconnect or connect to the cab air conditioning system.

[0017] Optionally, the method further includes: Real-time battery temperature monitoring; If the battery temperature is greater than the first threshold T1, the battery cooling pipe is connected to the cab air conditioning system, the battery circulation pipe is connected, and the cab air conditioning system is used to cool the battery. If the battery temperature is greater than the second threshold T2 and less than or equal to the first threshold T1, then the cab air conditioning system is turned off and / or the connection between the battery cooling pipe and the cab air conditioning system is disconnected, the battery circulation pipe is disconnected, and the battery is cooled by the radiator. If the battery temperature is less than the third threshold T3, the cab air conditioning system is turned off and the connection between the battery cooling line and the cab air conditioning system is disconnected. The battery is then heated using a heater installed on the battery circulation line. <T2<T1。

[0018] Compared with the prior art, the technical solution of the embodiments of the present invention has the following beneficial effects: The integrated thermal management system and method provided in this invention, targeting the existing air conditioning system and heat exchanger of hybrid vehicles, builds upon the existing battery circulation pipeline and intercooler circulation management. Through a simple structural design, it not only enables the cabin air conditioning system to cool the cabin and battery, ensuring battery performance, but also cools the engine intake air when the intake temperature is high after engine boost, thereby improving engine power. Furthermore, it can meet the personalized cooling temperature needs of different users in the cabin. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of an integrated thermal management system provided in an embodiment of the present invention; Figure 2 This is another structural schematic diagram of the integrated thermal management system provided in an embodiment of the present invention; Figure 3 This is another structural schematic diagram of the integrated thermal management system provided in an embodiment of the present invention; Figure 4 This is another structural schematic diagram of the integrated thermal management system provided in an embodiment of the present invention; Figure 5 This is another structural schematic diagram of the integrated thermal management system provided in an embodiment of the present invention; Figure 6 This is another structural schematic diagram of the integrated thermal management system provided in an embodiment of the present invention; Figure 7 This is another structural schematic diagram of the integrated thermal management system provided in an embodiment of the present invention; Figure 8 This is a flowchart of an integrated thermal management method provided in an embodiment of the present invention.

[0021] Icon labels: 2. Compressor; 3. Outdoor condenser; 5. Evaporator; 18. Battery radiator; 24. Heater; 30. Air filter; 31. Compressor; 32. Throttle valve; 33. Engine. 1. Cab cooling piping; 6. Battery cooling piping; 9. Battery circulation piping; 12. Intercooler circulation piping; 16. Engine intake piping; 20. First connecting pipe, 21. Second connecting pipe, 17. Third connecting pipe, 25. Fourth connecting pipe, 10. First water pump; 13. Second water pump; 4. First expansion valve; 7. Second expansion valve; 22. First three-way valve; 23. Second three-way valve; 19. Third three-way valve; 26. Fourth three-way valve; 27. Four-way valve; 28. Five-way valve; 29. ​​Six-way valve; 11. Battery; 8. Battery heat exchanger; 14. Water-cooled intercooler; 15. Intercooler radiator; 40. First connection control component. Detailed Implementation

[0022] To make the above-mentioned objects, features, and beneficial effects of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] It should be noted that in the description of the embodiments of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0024] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] It should also be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] This invention provides an integrated thermal management system and method for hybrid electric vehicles that have both gasoline and electric drive capabilities. Under different external environments and different operating conditions of the engine and battery, the system fully utilizes the cabin air conditioning system to cool the engine intake air.

[0027] like Figure 1 The diagram shown is a structural schematic of an integrated thermal management system provided in an embodiment of the present invention.

[0028] The integrated thermal management system includes: cab cooling pipe 1, battery cooling pipe 6, battery circulation pipe 9, engine intake pipe 16, intercooler circulation pipe 12, battery 11, battery heat exchanger 8, and water-cooled intercooler 14; battery 11 is installed on battery circulation pipe 9.

[0029] Typically, a compressor 2, an outdoor condenser 3, a first expansion valve 4, and an evaporator 5 can be connected in series along the refrigerant flow direction L1 on the cab refrigeration line 1; and a second expansion valve 7 and a battery heat exchanger 8 can be connected in series along the refrigerant flow direction L2 on the battery refrigeration line 6.

[0030] The battery cooling line 6 is connected in parallel with part of the cab cooling line 1 to divert the refrigerant in the cab cooling line 1. For example... Figure 1 As shown, the inlet of the battery cooling pipe 6 is connected to the cab cooling pipe 1 between the outdoor condenser 3 and the first expansion valve 4, and the outlet of the battery cooling pipe 6 is connected to the cab cooling pipe 1 between the compressor 2 and the evaporator 5.

[0031] A first water pump 10, a battery heat exchanger 8, and a battery 11 can be connected in series along the coolant flow direction L3 on the battery circulation pipeline 9.

[0032] In this embodiment, the battery heat exchanger 8 is installed on the battery cooling pipeline 6 and the battery circulation pipeline 9 to enable heat exchange between the refrigerant in the battery cooling pipeline 6 and the coolant in the battery circulation pipeline 9, thereby achieving cooling of the battery 11 using the cab air conditioning system and avoiding the impact of high temperature environment on the normal operation of the battery 11.

[0033] In some non-limiting embodiments, a heater 24 may also be provided on the battery circulation line 9 between the battery heat exchanger 8 and the battery 11. The heater 24 may be, for example, a PTC (Positive Temperature Coefficient) heater or other types of heaters suitable for vehicle battery systems, and this embodiment of the invention is not limited thereto.

[0034] In low-temperature environments, the heater 24 can be controlled to heat the coolant in the battery circulation pipeline 9, thereby avoiding the impact of low-temperature environments on the performance of the battery 11 and ensuring the battery 11's range.

[0035] A second water pump 13, a water-cooled intercooler 14, and an intercooler radiator 15 are connected in series along the coolant flow direction L4 on the intercooler circulation pipe 12.

[0036] An air filter 30, a compressor 31, a water-cooled intercooler 14, and a throttle valve 32 are connected in series along the intake direction L5 on the engine intake pipe 16. The outlet of the engine intake pipe 16 is connected to the intake port of the engine 33. The throttle valve 32 can regulate the airflow into the engine 33, thereby affecting the engine 33's power output, fuel economy, and emissions performance.

[0037] In this embodiment, the water-cooled intercooler 14 is installed on the engine intake pipe 16 and the intercooler circulation pipe 12 to allow the air entering the engine intake pipe 16 to exchange heat with the coolant in the intercooler circulation pipe 12.

[0038] like Figure 1 As shown, the integrated thermal management system also includes: a first connection control component 40, which controls the connection or disconnection of the battery circulation pipeline 9 and the intercooler circulation pipeline 12. Specifically: When it is necessary to use the cab air conditioning system to cool the air in the intake pipe 16, the first connection control component 40 connects the battery circulation pipe 9 and the intercooler circulation pipe 12, thus connecting them in series. Correspondingly, the compressor 2 operates, the coolant temperature in the battery cooling pipe 6 decreases, and through heat exchange with the battery heat exchanger 8, the coolant temperature in the battery circulation pipe 9 and the intercooler circulation pipe 12 decreases. Through heat exchange with the water-cooled intercooler 14, the air in the engine intake pipe 16 is cooled.

[0039] When it is not necessary to use the cab air conditioning system to cool the air in the intake pipe 16, the first connection control component 40 is controlled to disconnect the battery circulation pipe 9 and the intercooler circulation pipe 12. The battery circulation pipe 9 and the intercooler circulation pipe 12 are two independent circulation pipes. The battery circulation pipe 9 can cool or heat the battery 11.

[0040] In some cases, only the engine needs to drive the vehicle. In such cases, if the cabin air conditioning system needs to cool the air in the intake pipe 16, the battery circulation pipe 9 and the intercooler circulation pipe 12 can be connected in series through the first connection control component 40 to cool the engine intake air flowing through the water-cooled intercooler 14 using the air conditioning system.

[0041] It should be noted that when it is necessary to heat up the battery 11, the cab air conditioning system can be turned off and the heater 24 can be controlled to work, so that the coolant in the battery circulation pipe 9 is heated up, thereby increasing the ambient temperature of the battery 11.

[0042] In specific implementation, the first connection control component 40 can be implemented in various ways, which will be illustrated with examples below.

[0043] like Figure 2 The diagram shown is another structural schematic of the integrated thermal management system provided in an embodiment of the present invention.

[0044] In this embodiment, Figure 1 The first connection control component 40 may include: a first connecting pipe 20, a second connecting pipe 21, a first three-way valve 22, and a second three-way valve 23. Wherein: The first three-way valve 22 is installed on the battery circulation pipeline 9; the second three-way valve 23 is installed on the intercooler circulation pipeline 12; One end of the first connecting pipe 20 is connected to the first three-way valve 22, and the other end of the first connecting pipe 20 is connected to the intercooler circulation pipe 12, such as... Figure 2 As shown, it can be connected to the intercooler circulation pipeline 12 between the second three-way valve 23 and the second water pump 13.

[0045] One end of the second connecting pipe 21 is connected to the battery circulation pipe 9, such as Figure 2 As shown, it can be connected to the battery circulation pipeline 9 between the battery heat exchanger 8 and the first three-way valve 22. The other end of the second connecting pipe 21 is connected to the second three-way valve 23. like Figure 2 As shown, in some embodiments, the integrated thermal management system may further include: a third connecting pipe 17, a battery radiator 18, and a third three-way valve 19. The third three-way valve 19 is connected in series on the battery circulation pipeline 9 between the first three-way valve 22 and the first water pump 10; one port of the third connecting pipe 17 is connected to the third three-way valve 19, and the other port of the third connecting pipe 17 is connected to the battery 11. Specifically, as shown... Figure 2 As shown, the other port of the third connecting pipe 17 is connected to the battery circulation pipe 9 between the battery heat exchanger 8 and the battery 11. The battery radiator 18 is mounted on the third connecting pipe 17.

[0046] In this embodiment, the third three-way valve 19 is used to control whether the coolant in the battery circulation pipeline 9 flows through or not through the battery heat exchanger 8.

[0047] The integrated thermal management system of this embodiment can have the following operating modes: When the engine intake air temperature after passing through the water-cooled intercooler 14 in the engine intake pipe 16 is low, the battery circulation pipe 9 and the intercooler circulation pipe 12 can be disconnected by controlling the first three-way valve 22 and the second three-way valve 23. In this case, the coolant in the intercooler circulation pipe 12 undergoes a small circulation: passing sequentially through the second water pump 13, the water-cooled intercooler 14, the intercooler radiator 15, and the second three-way valve 23, and then flowing back to the second water pump 13. The coolant flowing through the water-cooled intercooler 14 cools the air compressed by the compressor 27, and then dissipates heat through the intercooler radiator 15.

[0048] When the engine intake air temperature is high after flowing through the water-cooled intercooler 14 in the engine intake pipe 16, the battery circulation pipe 9 and the intercooler circulation pipe 12 can be connected in series by controlling the first three-way valve 22, the second three-way valve 23, and the third three-way valve 19. In this case, the coolant in the series pipes undergoes a large circulation: passing sequentially through the first water pump 10, the third three-way valve 19, the first three-way valve 22, the second water pump 13, the water-cooled intercooler 14, the intercooler radiator 15, the second three-way valve 23, the battery heat exchanger 8, the heater 24, and the battery 11. At the same time, compressor 2 starts, first expansion valve 4 closes, second expansion valve 7 opens, and air conditioning refrigeration system cools the coolant in the series pipeline of battery circulation pipeline 9 and intercooler circulation pipeline 12 through battery heat exchanger 8. The cooled coolant first cools battery 11, and then flows through third three-way valve 19, first three-way valve 22, first connecting pipe 20, and second water pump 13 to cool the engine intake air flowing through water-cooled intercooler 14.

[0049] When the battery temperature is low, the air conditioning system is not required for cooling. Under the control of the third three-way valve 19, the coolant flows sequentially through the first water pump 10, the third three-way valve 19, the battery radiator 18, and the battery 11. The battery 11 dissipates heat through the battery radiator 18.

[0050] When the battery temperature is high, the air conditioning system is required for cooling. Controlled by the third three-way valve 19 and the first three-way valve 22, the coolant in the battery circulation line 9 passes sequentially through the first water pump 10, the third three-way valve 19, the first three-way valve 22, the battery heat exchanger 8, the heater 24, and the battery 11. Simultaneously, the compressor 2 starts, the first expansion valve 4 closes, and the second expansion valve 7 opens. The air conditioning system then cools the coolant in the battery circulation line 9 through the battery heat exchanger 8, thereby cooling the battery 11.

[0051] When the temperature inside the cab is relatively high, but the battery temperature is low and the air conditioning system is not needed, the compressor 2 can be started, the first expansion valve 4 can be opened, and the second expansion valve 7 can be closed, so that the air conditioning system only cools the cab.

[0052] When the temperature inside the cab and the battery temperature are both relatively high, the first expansion valve 4 and the second expansion valve 7 can be opened simultaneously to cool the cab through the evaporator 5 and cool the battery 11 through the battery heat exchanger 8.

[0053] In winter, when the battery 11 needs to be heated, the connection between the intercooler circulation pipe 12 and the battery circulation pipe 9 can be disconnected by controlling the first three-way valve 22, the second three-way valve 23 and the third three-way valve 19. At the same time, the third connecting pipe 17 is disconnected from the battery circulation pipe 9, and the heater 21 is controlled to heat the coolant in the battery circulation pipe 9, thereby raising the temperature of the battery 11.

[0054] It should be noted that, in practical implementation, corresponding temperature sensors can be set to sense the temperature of the battery 11 and the air intake of the engine 33, and corresponding temperature thresholds can be set to determine whether cooling or heating needs to be activated, thereby achieving automatic temperature control. Similarly, for the temperature control of the cab, corresponding temperature sensors can be set in the cab to sense the temperature inside the cab, and corresponding temperature thresholds can be set for automatic temperature control.

[0055] In addition, considering that different people have different tolerances to high and low temperatures and different levels of physical comfort, the control of the cab temperature and the temperature threshold can be set to be manually controlled by the user, and personalized temperature thresholds can be freely set to meet the needs of different users.

[0056] The integrated thermal management system provided by the embodiments of the present invention can flexibly set a variety of different control methods according to actual application needs, and the embodiments of the present invention do not limit this.

[0057] like Figure 3 The diagram shown is another structural schematic of the integrated thermal management system provided in an embodiment of the present invention.

[0058] In this example, Figure 1The first connection control component 40 may include a four-way valve 27 simultaneously installed on both the battery heat exchanger 8 and the intercooler circulation pipe 12. Two ports of the four-way valve 27 are connected to the battery circulation pipe 9 between the battery heat exchanger 8 and the third three-way valve 19, and the other two ports of the four-way valve 27 are connected to the intercooler circulation pipe 12 between the second water pump 13 and the intercooler radiator 15. By controlling the four-way valve 27, the connection or disconnection of the two cooling pipes, the battery circulation pipe 9 and the intercooler circulation pipe 12, can be achieved.

[0059] like Figure 4 The diagram shown is another structural schematic of the integrated thermal management system provided in an embodiment of the present invention.

[0060] and Figure 2 The difference in the illustrated embodiment is that, Figure 4 In the illustrated embodiment, the integrated thermal management system further includes a second connection control component for controlling whether the coolant circulation process in the intercooler circulation pipe 12 flows through or does not flow through the intercooler radiator 15.

[0061] Figure 4 In the example shown, the second connection control component includes a fourth connecting pipe 25 and a fourth three-way valve 26. The fourth three-way valve 26 is disposed on the intercooler circulation pipe 12, specifically connected in series between the second three-way valve 23 and the intercooler radiator 15. One end of the fourth connecting pipe 25 is connected to the fourth three-way valve 26, and the other end of the fourth connecting pipe 25 is connected to the intercooler circulation pipe 12 between the water-cooled intercooler 14 and the intercooler radiator 15.

[0062] In this embodiment, when the ambient temperature is relatively high, and the air conditioning system is used to cool the engine intake air in the engine intake pipe 16, the coolant flowing through the water-cooled intercooler 14 can be controlled by the first three-way valve 22, the second three-way valve 23, the third three-way valve 19, and the fourth three-way valve 26 to bypass the intercooler radiator 15 and flow directly into the battery circulation pipe 9 through the fourth connecting pipe 25, the fourth three-way valve 26, the second three-way valve 23, and the first connecting pipe 21. This prevents the atmospheric environment from heating the coolant flowing through the intercooler radiator 15, allowing the engine intake air to quickly reach the required temperature and improving the engine intake air temperature regulation efficiency.

[0063] like Figure 5 As shown, in some embodiments, Figure 4The functions of the first connecting pipe 20, the second connecting pipe 21, the first three-way valve 22, and the second three-way valve 23 can also be replaced by the four-way valve 27. Two ports of the four-way valve 27 are connected to the battery circulation pipeline 9 between the battery heat exchanger 8 and the third three-way valve 19, and the other two ports of the four-way valve 27 are connected to the intercooler circulation pipeline 12 between the second water pump 13 and the fourth three-way valve 26. By controlling the four-way valve 27, the battery circulation pipeline 9 and the intercooler circulation pipeline 12 can be connected in series or disconnected.

[0064] like Figure 6 The diagram shown is another structural schematic of the integrated thermal management system provided in an embodiment of the present invention.

[0065] Figure 6 The illustrated embodiment is in Figure 5 Based on the embodiment shown, the functions of the third three-way valve 19 and the four-way valve 27 are replaced by the five-way valve 28. The five-way valve 28 has two ports connected to the battery circulation pipeline 9 between the first water pump 10 and the battery heat exchanger 8, two ports connected to the intercooler circulation pipeline 12 between the second water pump 13 and the fourth three-way valve 26, and one port connected to the third connecting pipe 17.

[0066] In this embodiment, the five-way valve 28 controls the connection or disconnection of the battery circulation pipe 9 and the intercooler circulation pipe 12, as well as the operation mode of whether the coolant flows through the battery radiator 18. The control of the five-way valve 28 under different operating modes can be determined according to the cooling requirements of the engine 33, battery 11, and cab, and the corresponding coolant circulation path. For details, please refer to... Figure 1 The descriptions in the illustrated embodiments will not be repeated here.

[0067] like Figure 7 The diagram shown is another structural schematic of the integrated thermal management system provided in an embodiment of the present invention.

[0068] Compared to Figure 1 In the illustrated embodiment, Figure 7 The illustrated embodiment can be considered as being in Figure 1 The first connection control component 40 includes a six-way valve 29 simultaneously disposed on both the battery circulation line 9 and the intercooler circulation line 12. Simultaneously relative to… Figure 1 A third connecting pipe 17 and a fourth connecting pipe 25 were also added; one end of the third connecting pipe 17 is connected to the six-way valve 29, and the other end of the third connecting pipe 17 is connected to the battery 11; one end of the fourth connecting pipe 25 is connected to the six-way valve 29, and the other end of the fourth connecting pipe 25 is connected to the water-cooled intercooler 14.

[0069] Compared to Figure 1In the embodiment shown, the first connection control component 40 is further configured to control whether the coolant circulation process in the battery circulation pipeline 9 flows through the battery heat exchanger 8 and whether the coolant circulation process in the intercooler circulation pipeline 12 flows through the intercooler radiator 15.

[0070] In this embodiment, the six-way valve 29 controls the connection or disconnection of the battery circulation pipe 9 and the intercooler circulation pipe 12, as well as the operation mode of whether the coolant flows through the battery radiator 18. The control of the six-way valve 29 under different operating modes can be determined according to the cooling requirements of the engine 33, battery 11, and cab, and the corresponding coolant circulation path. For details, please refer to... Figure 1 The descriptions in the illustrated embodiments will not be repeated here.

[0071] It should be noted that, Figure 7 In the embodiments, it can also be seen as... Figure 6 The functions of the fourth three-way valve 26 and the five-way valve 28 are replaced by the six-way valve 29. The six-way valve 29 has two ports connected to the battery circulation pipeline 9 between the first water pump 10 and the battery heat exchanger 8, two ports connected to the intercooler circulation pipeline 12 between the second water pump 13 and the intercooler radiator 15, one port connected to the third connecting pipe 17, and another port connected to the fourth connecting pipe 25.

[0072] The six-way valve 29 is used to control the connection of pipelines under different operating modes of the integrated thermal management system. While meeting the requirements of insufficient operating modes, it further simplifies the pipeline design and saves system space.

[0073] It should be noted that in the above embodiments, the first expansion valve 4 and the second expansion valve 7 can be electronic expansion valves, which facilitates the control of the cab cooling pipe 1 and the battery cooling pipe 6.

[0074] The integrated thermal management system provided in this embodiment of the invention has a simple design. Through the design of control valves and pipelines, it can make full use of the cab air conditioning system to regulate the temperature of the battery and engine intake air, ensuring the working performance of the battery and improving engine efficiency.

[0075] Accordingly, based on the above-described integrated thermal management system, embodiments of the present invention also provide an integrated thermal management method, such as... Figure 8 The diagram shown is a flowchart of this method, which includes the following steps: Step 801: Obtain the engine intake air temperature in real time.

[0076] Step 802: Determine whether the engine intake air needs to be cooled based on the engine intake air temperature. If yes, proceed to step 803; otherwise, proceed to step 804.

[0077] Step 803: Connect the battery circulation pipeline and the intercooler circulation pipeline, and connect the battery cooling pipeline to the cab air conditioning system to cool the engine intake air.

[0078] Step 804: Disconnect the battery circulation pipeline and the intercooler circulation pipeline.

[0079] To meet the different comfort requirements of users regarding cab temperature, in some embodiments, when using the cab air conditioning system to cool the engine intake air, the cab cooling pipes can be controlled to be disconnected or connected to the cab air conditioning system. When the cab cooling pipes are disconnected from the cab air conditioning system, only the battery cooling pipes are connected to the air conditioning system to cool the engine intake air; when the cab cooling pipes are connected to the cab air conditioning system, the air conditioning system can be used to cool the cab.

[0080] It should be noted that, for step 802 above, which determines whether the engine intake air needs to be cooled based on the engine intake air temperature, a corresponding temperature threshold can be preset based on the test. If the engine intake air temperature is greater than the temperature threshold, it is determined that the engine intake air needs to be cooled; otherwise, it is determined that the engine intake air does not need to be cooled.

[0081] In some embodiments, the battery temperature can also be acquired in real time; based on the battery temperature, it can be determined whether the battery needs to be cooled and the method of cooling the battery, as follows: If the battery temperature is greater than the first threshold T1, the battery cooling pipe is connected to the cab air conditioning system, the battery circulation pipe is connected, and the cab air conditioning system is used to cool the battery. If the battery temperature is greater than the second threshold T2 and less than or equal to the first threshold T1, then the cab air conditioning system is turned off and / or the connection between the battery cooling pipe and the cab air conditioning system is disconnected, the battery circulation pipe is disconnected, and the battery is cooled by the radiator. If the battery temperature is below the third threshold T3, the cab air conditioning system is shut off and the battery cooling line is disconnected from the cab air conditioning system. The battery is then heated using a heater installed on the battery circulation line. T3 <T2<T1。

[0082] In other words, when the battery temperature is too high, the cabin air conditioning system can be used to cool the battery; when the battery temperature is high, the radiator can be used to cool the battery without turning on the air conditioning system; when the battery temperature is low, the radiator can be turned on to raise the battery temperature, so that the battery can work in a suitable temperature environment, ensure battery performance, and effectively extend battery life.

[0083] It should be noted that the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion.

[0084] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article indicates that the preceding and following related objects have an "or" relationship.

[0085] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. Furthermore, the system embodiments described above are merely illustrative. The modules and units described as separate components may or may not be physically separate; that is, they may be located on a single network unit or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0086] While this application discloses the above information, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this application; therefore, the scope of protection of this application shall be determined by the scope defined in the claims.

Claims

1. An integrated thermal management system, characterized in that, The system includes: cab cooling pipe (1), battery cooling pipe (6), battery circulation pipe (9), engine intake pipe (16), intercooler circulation pipe (12), battery (11), battery heat exchanger (8) and water-cooled intercooler (14); the battery (11) is installed on the battery circulation pipe (9); The battery cooling pipeline (6) is connected in parallel with part of the cab cooling pipeline (1); The battery heat exchanger (8) is installed on the battery cooling pipeline (6) and the battery circulation pipeline (9) to enable the refrigerant in the battery cooling pipeline (6) to exchange heat with the coolant in the battery circulation pipeline (9). The water-cooled intercooler (14) is installed on the engine intake pipe (16) and the intercooler circulation pipe (12) to allow the air entering the engine intake pipe (16) to exchange heat with the coolant in the intercooler circulation pipe (12). It also includes: a first connection control component for controlling the connection or disconnection of the battery circulation pipeline (9) and the intercooler circulation pipeline (12); The first connection control component includes: First connecting pipe (20), second connecting pipe (21), first three-way valve (22), second three-way valve (23); The first three-way valve (22) is installed on the battery circulation pipeline (9); the second three-way valve (23) is installed on the intercooler circulation pipeline (12); One end of the first connecting pipe (20) is connected to the first three-way valve (22), and the other end of the first connecting pipe (20) is connected to the intercooler circulation pipe (12); One end of the second connecting pipe (21) is connected to the second three-way valve (23), and the other end of the second connecting pipe (21) is connected to the battery circulation pipeline (9).

2. The integrated thermal management system according to claim 1, characterized in that, The first connection control component includes a four-way valve (27) simultaneously installed on the battery heat exchanger (8) and the intercooler circulation pipeline (12).

3. The integrated thermal management system according to claim 1, characterized in that, An intercooler radiator (15) is installed on the intercooler circulation pipe (12); the system also includes: The second connection control component is used to control the circulation process of the coolant in the intercooler circulation pipe (12) to flow through or not flow through the intercooler radiator (15).

4. The integrated thermal management system according to claim 3, characterized in that, The second connection control component includes: a fourth connecting pipe (25) and a fourth three-way valve (26); The fourth three-way valve (26) is installed on the intercooler circulation pipeline (12); One end of the fourth three-way valve (26) is connected to the second three-way valve (23), and the other end of the fourth three-way valve (26) is connected to the water-cooled intercooler (14).

5. The integrated thermal management system according to claim 2, characterized in that, The system also includes: a third connecting pipe (17), a battery radiator (18), and a third three-way valve (19). The battery heat sink (18) is mounted on the third connecting pipe (17). The third three-way valve (19) is installed on the battery circulation pipeline (9); One end of the third connecting pipe (17) is connected to the battery (11), and the other end of the third connecting pipe (17) is connected to the third three-way valve (19); The third three-way valve (19) is used to control whether the coolant in the battery circulation pipeline (9) flows through the battery heat exchanger (8).

6. The integrated thermal management system according to claim 5, characterized in that, The four-way valve (27) and the third three-way valve (19) are replaced by a five-way valve (28).

7. The integrated thermal management system according to claim 1, characterized in that, An intercooler radiator (15) is installed on the intercooler circulation pipe (12). The first connection control component includes a six-way valve (29) simultaneously disposed on the battery circulation pipeline (9) and the intercooler circulation pipeline (12). The system further includes: a third connecting pipe (17) and a fourth connecting pipe (25); one end of the third connecting pipe (17) is connected to the six-way valve (29), and the other end of the third connecting pipe (17) is connected to the battery (11); one end of the fourth connecting pipe (25) is connected to the six-way valve (29), and the other end of the fourth connecting pipe (25) is connected to the water-cooled intercooler (14); The first connection control component is also used to control whether the coolant circulation process in the battery circulation pipeline (9) flows through the battery heat exchanger (8) or not, and to control whether the coolant circulation process in the intercooler circulation pipeline (12) flows through the intercooler radiator (15).

8. The integrated thermal management system according to any one of claims 1 to 7, characterized in that, The driver's cab refrigeration pipeline (1) is connected in series with a compressor (2), an outdoor condenser (3), a first expansion valve (4), and an evaporator (5) along the refrigerant flow direction. A second expansion valve (7) is provided on the battery cooling pipeline (6). Both the first expansion valve (4) and the second expansion valve (7) are electronic expansion valves.

9. The integrated thermal management system according to claim 1, characterized in that, A heater (24) is provided on the battery circulation pipeline (9), and the heater (24) is a PTC heater.

10. An integrated thermal management method based on the integrated thermal management system according to any one of claims 1 to 9, characterized in that, The method includes: Real-time acquisition of engine intake air temperature; Determine whether it is necessary to cool the engine intake air based on the engine intake air temperature. If it is necessary to cool the engine intake air, the battery circulation line and the intercooler circulation line are connected, and the battery cooling line is connected to the cab air conditioning system, so as to use the cab air conditioning system to cool the engine intake air. If cooling of the engine intake air is not required, the battery circulation line and the intercooler circulation line are disconnected.

11. The integrated thermal management method according to claim 10, characterized in that, The method further includes: When using the cab air conditioning system to cool the engine intake air, the cab cooling pipes are controlled to be disconnected or connected to the cab air conditioning system.

12. The integrated thermal management method according to claim 10 or 11, characterized in that, The method further includes: Real-time battery temperature monitoring; If the battery temperature is greater than the first threshold T1, the battery cooling pipe is connected to the cab air conditioning system, the battery circulation pipe is connected, and the cab air conditioning system is used to cool the battery. If the battery temperature is greater than the second threshold T2 and less than or equal to the first threshold T1, then the cab air conditioning system is turned off and / or the connection between the battery cooling pipe and the cab air conditioning system is disconnected, the battery circulation pipe is disconnected, and the battery is cooled by the radiator. If the battery temperature is less than the third threshold T3, the cab air conditioning system is turned off and the connection between the battery cooling line and the cab air conditioning system is disconnected. The battery is then heated using a heater installed on the battery circulation line. <T2<T1。

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