Thermal management system and electric vehicle

Abstract

The application relates to the technical field of automobile thermal management, in particular to a thermal management system and an electric automobile. The thermal management system comprises a refrigerant circulation system, a water circuit integrated regulation and control device and multiple terminal loads. Multiple refrigerant circulation loops are formed in the refrigerant circulation device. The water circuit integrated regulation and control device comprises multiple water pumps, a multi-way valve and a water circuit integrated plate. The water circuit integrated plate is integrated with heat exchange pipelines in communication with a condensing heat exchanger, two evaporating heat exchangers and load pipelines in communication with the water circuits of the terminal loads. The multi-way valve has multiple interfaces for the communication of the heat exchange pipelines and the load pipelines. By dynamically controlling the multi-way valve, the conduction between different interfaces and different heat exchange pipelines and / or different load pipelines is completed, and the refrigeration or heating of the multiple terminal loads is realized in cooperation with the water pumps and the refrigerant circulation loops. Through comprehensive regulation and control, the application can realize the fine utilization of the energy of multiple terminal loads of an electric heavy truck.

Description

Technical Field

[0001] This application relates to the field of automotive thermal management technology, and in particular to a thermal management system and an electric vehicle. Background Technology

[0002] As people's awareness of environmental protection continues to increase, new energy vehicles are attracting more and more attention due to their energy-saving and environmentally friendly characteristics.

[0003] Meanwhile, with the maturity of battery technology, electric heavy-duty trucks are experiencing rapid development, and the overall thermal management of new energy vehicles has become increasingly important. This requires not only ensuring passenger compartment comfort through temperature control, but also managing battery cooling during fast charging, battery heating during low-temperature charging, and electric drive cooling. However, current thermal management systems for electric heavy-duty trucks are relatively independent. Passenger compartment air conditioning systems use a single cooling system plus WPTC (Power Wrapper Temperature Control), battery cooling uses a separate refrigeration system, battery heating uses an electric heating film, and the energy of the electric drive cooling system cannot be effectively utilized. These systems have limited functionality, lack coordinated operation, have numerous components, high costs, and the refrigerants used are facing gradual phase-out due to policy regulations.

[0004] Electric truck batteries have 5-10 times the energy of passenger car batteries. The cooling or heating requirements for charging them differ significantly from those of air conditioning. Therefore, simple all-in-one integrated thermal management systems are not suitable. Summary of the Invention

[0005] In view of this, this application provides a thermal management system and an electric vehicle to solve the problem of low energy utilization rate of existing electric heavy-duty trucks with multiple end loads.

[0006] A first aspect of this application provides a thermal management system applied to an electric heavy-duty truck, the thermal management system comprising:

[0007] A refrigerant circulation system includes a compressor, a condensing heat exchanger, a first throttling element, a second throttling element, a first evaporating heat exchanger, a second evaporating heat exchanger, and a gas-liquid separator, all connected by refrigerant fluid. The first evaporating heat exchanger and the first throttling element form a first series pipeline, and the second evaporating heat exchanger and the second throttling element form a second series pipeline. The first series pipeline and the second series pipeline are connected in parallel and in series with the condensing heat exchanger to form multiple refrigerant circulation loops.

[0008] A water circuit integrated control device includes multiple water pumps, multi-way valves and a water circuit integrated plate. The water circuit integrated plate integrates multiple heat exchange pipelines that are respectively connected to the water circuits of the condensing heat exchanger, the first evaporating heat exchanger and the second evaporating heat exchanger.

[0009] Multiple end loads, the water circuit integration board integrates multiple load pipes that are respectively connected to the water circuits of each end load;

[0010] The multi-way valve has multiple interfaces connecting the heat exchange pipelines and the load pipelines, so as to achieve the connection between different interfaces of the multi-way valve and different heat exchange pipelines and / or different load pipelines by dynamically controlling the multi-way valve, and to cooperate with multiple water pumps and multiple refrigerant circulation loops to realize the cooling or heating of the multiple terminal loads.

[0011] In some embodiments, the condensing heat exchanger is a condensing plate heat exchanger;

[0012] Both the first evaporative heat exchanger and the second evaporative heat exchanger are evaporative plate heat exchangers;

[0013] Both the first throttling element and the second throttling element are electronic expansion valves.

[0014] In some embodiments, the plurality of end loads include a first external heat exchanger and a second external heat exchanger;

[0015] The load lines of the first external heat exchanger and the second external heat exchanger are connected to different interfaces of the multi-way valve to form various external heat exchange circulation loops.

[0016] In some embodiments, the first external heat exchanger and the second external heat exchanger are both liquid-cooled heat exchangers and are connected in parallel;

[0017] Furthermore, the first external heat exchanger and the second external heat exchanger share the same external fan;

[0018] The external fan is an external fan installed on an electric heavy-duty truck.

[0019] In some embodiments, each external heat exchange loop of the first external heat exchanger and the second external heat exchanger can be operated simultaneously under control, and during the simultaneous controlled operation, they cooperate with the first evaporative heat exchanger and the second evaporative heat exchanger.

[0020] In some embodiments, the plurality of end loads include a first in-vehicle heat exchanger and a second in-vehicle heat exchanger;

[0021] The load lines of the first and second in-vehicle heat exchangers are connected to different interfaces of the multi-way valve to form in-vehicle heat exchange circulation loops.

[0022] In some embodiments, the first in-vehicle heat exchanger and the second in-vehicle heat exchanger are both liquid-cooled heat exchangers and are connected in parallel;

[0023] Furthermore, the first in-vehicle heat exchanger and the second in-vehicle heat exchanger share the same internal fan;

[0024] The internal fan is an internal fan installed on an electric heavy-duty truck.

[0025] In some embodiments, each in-vehicle heat exchange loop of the first in-vehicle heat exchanger and the second in-vehicle heat exchanger operates simultaneously and collaboratively with the first evaporative heat exchanger and the second evaporative heat exchanger during controlled operation.

[0026] In some embodiments, when the first and second in-vehicle heat exchangers are used in conjunction with the multi-way valve, the two in-vehicle heat exchangers can simultaneously operate in a cooling mode, simultaneously operate in a heating mode, or operate in a cooling-heating mode.

[0027] In some embodiments, the plurality of end loads further include a battery module and an electric drive module;

[0028] The battery module is used to provide power to the electric heavy-duty truck. The battery module is connected to different interfaces of the multi-way valve to form a battery heat exchange circulation loop.

[0029] The electric drive module is used to drive and control the operation of the electric heavy truck. The electric drive module is connected to different interfaces of the multi-way valve to form each electric drive heat exchange loop.

[0030] In the controlled operation, the battery heat exchange circulation loop of the battery module and the electric drive heat exchange circulation loop of the electric drive module work together with the first evaporator heat exchanger and the second evaporator heat exchanger.

[0031] In some embodiments, when the electric heavy-duty truck is in normal driving, one of the first external heat exchanger and the second external heat exchanger can be used to dissipate heat for the condenser heat exchanger, and the other external heat exchanger can be used to dissipate heat for the electric drive module.

[0032] or,

[0033] When the electric heavy-duty truck is charging, the first external heat exchanger and the second external heat exchanger can work together to dissipate heat from the condenser heat exchanger.

[0034] A second aspect of this application provides an electric vehicle that includes a thermal management system as described in the first aspect;

[0035] The electric vehicle in question is an electric heavy-duty truck.

[0036] Compared with the prior art, the main advantages of this application are:

[0037] This application relates to a thermal management system and an electric vehicle. The thermal management system, applied to an electric heavy-duty truck, includes a refrigerant circulation system, a water circuit integrated control device, and multiple terminal loads. The refrigerant circulation system includes a compressor, a condensing heat exchanger, a first throttling element, a second throttling element, a first evaporating heat exchanger, a second evaporating heat exchanger, and a gas-liquid separator, all connected by refrigerant fluid. The first evaporating heat exchanger and the first throttling element form a first series pipeline, and the second evaporating heat exchanger and the second throttling element form a second series pipeline. The first and second series pipelines are connected in parallel and in series with the condensing heat exchanger to form multiple refrigerant circulation loops. The water circuit integrated control device includes multiple water pumps, a multi-way valve, and a water circuit integrated plate. The system integrates multiple heat exchange pipes that are respectively connected to the water circuits of a condensing heat exchanger, a first evaporating heat exchanger, and a second evaporating heat exchanger; the water circuit integration plate integrates multiple load pipes that are respectively connected to the water circuits of each terminal load; wherein, the multi-way valve has interfaces connecting multiple heat exchange pipes and multiple load pipes, so as to achieve the conduction between different interfaces of the multi-way valve and different heat exchange pipes and / or different load pipes by dynamically controlling the multi-way valve, and to cooperate with multiple water pumps and multiple refrigerant circulation loops to realize the cooling or heating of multiple terminal loads. In this application, through the comprehensive control of the water circuit integrated control device, the refined utilization of energy of multiple terminal loads of electric heavy-duty trucks can be realized. Attached Figure Description

[0038] To more clearly illustrate the embodiments of this application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0039] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0040] Figure 1 This is a schematic diagram of a thermal management system according to an embodiment of this application;

[0041] Figure 2 This is a schematic diagram of the refrigerant circulation system in a thermal management system according to an embodiment of this application;

[0042] Figure 3 This is a schematic diagram of the structure of an integrated control device for refrigerant circulation system and water circuit in a thermal management system according to an embodiment of this application;

[0043] Figure 4 This is a schematic diagram of the dynamic control of the passenger cabin air conditioning during cooling in a thermal management system according to an embodiment of this application;

[0044] Figure 5 This is a schematic diagram of the dynamic control of battery charging and cooling in a thermal management system according to an embodiment of this application;

[0045] Figure 6 This is a schematic diagram illustrating the dynamic control of air conditioning cooling, battery cooling, and electric drive heat dissipation in a thermal management system according to an embodiment of this application;

[0046] Figure 7 This is a schematic diagram of dynamic control during waste heat recovery of electric drive and battery modules in a thermal management system according to an embodiment of this application;

[0047] Figure 8 This is a schematic diagram of the dynamic control of the passenger cabin air conditioning during heating in a thermal management system according to an embodiment of this application.

[0048] Figure label:

[0049] 100. Thermal management system; 110. Compressor; 210. Gas-liquid separator; 310. First throttling element; 320. Second throttling element; 410. Condensing heat exchanger; 420. First evaporating heat exchanger; 430. Second evaporating heat exchanger; 500. Multi-way valve; 610. First external heat exchanger; 620. Second external heat exchanger; 630. First internal heat exchanger; 640. Second internal heat exchanger; 650. Battery module; 660. Electric drive module. Detailed Implementation

[0050] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “said,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0052] It should be understood that the term "and / or" used 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, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0053] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0054] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, but should not be construed as limiting this application.

[0055] like Figures 1 to 8 As shown, an exemplary embodiment of this application provides a thermal piping system. This thermal management system is applied in an electric heavy-duty truck for fine-grained control of the capabilities of multiple end loads in the electric heavy-duty truck. The thermal management system includes: a refrigerant circulation system, a water circuit integrated control device, and multiple end loads.

[0056] The refrigerant circulation system includes a compressor 110, a condenser heat exchanger 410, a first throttling element 310, a second throttling element 320, a first evaporator heat exchanger 420, a second evaporator heat exchanger 430, and a gas-liquid separator 210, all connected by refrigerant fluid.

[0057] The first evaporator heat exchanger 420 and the first throttling element 310 form a first series pipeline, and the second evaporator heat exchanger 430 and the second throttling element 320 form a second series pipeline. The first series pipeline and the second series pipeline are connected in parallel and connected in series with the condenser heat exchanger 410 to form multiple refrigerant circulation loops.

[0058] The condenser heat exchanger 410 is a condenser plate heat exchanger. The first evaporator heat exchanger 420 and the second evaporator heat exchanger 430 are both evaporator plate heat exchangers. The first throttling element 310 and the second throttling element 320 are both electronic expansion valves.

[0059] Specifically, the discharge port of compressor 110 is connected to the refrigerant inlet of condenser heat exchanger 410, one end of the refrigerant outlet of condenser heat exchanger 410 is connected to the first throttling element 310, the other end of the first throttling element 310 is connected to the refrigerant inlet of first evaporator heat exchanger 420, the refrigerant outlet of first evaporator heat exchanger 420 is connected to one end of gas-liquid separator 210, the other end of the refrigerant outlet of condenser plate heat exchanger 410 is connected to the second throttling element 320, the other end of the second throttling element 320 is connected to the refrigerant inlet of second evaporator heat exchanger 430, the refrigerant outlet of second evaporator heat exchanger 430 is connected to one end of gas-liquid separator 210, and the other end of gas-liquid separator 210 is connected to the suction port of compressor 110.

[0060] The water circuit integrated control device includes multiple water pumps, a multi-way valve 500, and a water circuit integrated plate. The water circuit integrated plate integrates multiple heat exchange pipelines that are respectively connected to the water circuits of the condensing heat exchanger 410, the first evaporating heat exchanger 420, and the second evaporating heat exchanger 430.

[0061] The system includes multiple terminal loads, with the water circuit integration board integrating multiple load pipelines connected to the water circuits of each terminal load. The multi-way valve 500 has multiple interfaces connecting to heat exchange pipelines and multiple load pipelines. By dynamically controlling the multi-way valve 500, the system can establish connections between different interfaces of the multi-way valve 500 and different heat exchange pipelines and / or different load pipelines. Furthermore, in conjunction with multiple water pumps and multiple refrigerant circulation loops, it can achieve cooling or heating for multiple terminal loads.

[0062] It should be noted that the water circuit integration board can be equipped with multiple water circuit connection structures, each of which is set independently to facilitate connection with various functional components (such as heat exchangers and terminal loads).

[0063] Specifically, the water inlet and outlet of the condenser heat exchanger 410 are connected to the two interfaces of the multi-way valve 500 through a water circuit integration board; the water inlet and outlet of the first evaporator heat exchanger 420 are connected to the two interfaces of the multi-way valve 500 through a water circuit integration board; the water inlet and outlet of the second evaporator heat exchanger 430 are connected to the two interfaces of the multi-way valve 500 through a water circuit integration board; the first external heat exchanger 610 is connected to the two interfaces of the multi-way valve 500 through a water pipe; the second external heat exchanger 620 is connected to the two interfaces of the multi-way valve 500 through a water pipe; the first internal heat exchanger 630 is connected to the two interfaces of the multi-way valve 500 through a water pipe; the second internal heat exchanger 640 is connected to the two interfaces of the multi-way valve 500 through a water pipe; the battery module 650 is connected to the two interfaces of the multi-way valve 500 through a water pipe; and the electric drive module 660 is connected to the two interfaces of the multi-way valve 500 through a water pipe.

[0064] In other words, the multi-way valve 500 has at least eighteen structures, meaning that the multi-way valve 500 can adopt the eighteen-way valve in the prior art. The structure of the eighteen-way valve will not be described in detail here.

[0065] like Figures 1 to 8 As shown, in some embodiments, the multiple end loads include a first external heat exchanger 610 and a second external heat exchanger 620.

[0066] The load lines of the first external heat exchanger 610 and the second external heat exchanger 620 are connected to different interfaces of the multi-way valve 500 to form external heat exchange circulation loops.

[0067] The first external heat exchanger 610 and the second external heat exchanger 620 are both liquid-cooled heat exchangers and are connected in parallel.

[0068] Furthermore, the first external heat exchanger 610 and the second external heat exchanger 620 share the same external fan. The external fan is the one installed on the electric heavy-duty truck.

[0069] Each external heat exchange loop of the first external heat exchanger 610 and the second external heat exchanger 620 can be operated simultaneously under control, and during the simultaneous controlled operation, they cooperate with the first evaporative heat exchanger 420 and the second evaporative heat exchanger 430.

[0070] like Figures 1 to 8 As shown, in some embodiments, multiple end loads include a first in-vehicle heat exchanger 630 and a second in-vehicle heat exchanger 640. The load lines of the first in-vehicle heat exchanger 630 and the load lines of the second in-vehicle heat exchanger 640 are both connected to different interfaces of the multi-way valve 500 to form each in-vehicle heat exchange circulation loop.

[0071] Both the first and second in-vehicle heat exchangers 630 and 640 are liquid-cooled heat exchangers and are connected in parallel. Furthermore, the first and second in-vehicle heat exchangers 630 and 640 share the same internal fan, which is the same internal fan installed on the electric heavy-duty truck.

[0072] During controlled operation, the in-vehicle heat exchange circulation loops of the first in-vehicle heat exchanger 630 and the second in-vehicle heat exchanger 640 operate simultaneously and collaboratively with the first evaporative heat exchanger 420 and the second evaporative heat exchanger 430.

[0073] like Figures 1 to 8 As shown, in some embodiments, the multiple end loads also include a battery module 650 and an electric drive module 660.

[0074] The battery module 650 is used to provide power to the electric heavy-duty truck. The battery module 650 is connected to different interfaces of the multi-way valve 500 to form a battery heat exchange circulation loop.

[0075] The electric drive module 660 is used to drive and control the operation of electric heavy-duty trucks. The electric drive module 660 is connected to different interfaces of the multi-way valve 500 to form various electric drive heat exchange circulation loops.

[0076] In the controlled operation, the battery heat exchange circulation loop of the battery module 650 and the electric drive heat exchange circulation loop of the electric drive module 660 work together with the first evaporator heat exchanger 420 and the second evaporator heat exchanger 430.

[0077] Specifically, Figure 4 The diagram shows the air conditioning system of the passenger compartment. The high-temperature and high-pressure refrigerant discharged from the compressor 110 enters the condenser plate heat exchanger 410 for cooling and heat release. After being throttled by the first throttling device 310 and the second throttling device 320, it enters the first evaporator heat exchanger 420 and the second evaporator heat exchanger 430 for heat absorption and then enters the gas-liquid separator 210. Finally, the low-temperature and low-pressure refrigerant enters the compressor 110 for intake.

[0078] The first water pump in the multi-way valve 500 provides power so that the refrigerant after releasing heat in the first external heat exchanger 610 is regulated by the multi-way valve 500 and enters the condenser plate heat exchanger 410 to absorb heat. After absorbing heat, it returns to the multi-way valve 500 and is regulated by the multi-way valve 500 to enter the second external heat exchanger 620. The second external heat exchanger 620 releases heat to the external environment through the external fan for the first heat release and then returns to the multi-way valve 500 to enter the first external heat exchanger 610. The first external heat exchanger 610 releases heat to the external environment through the external fan for the second heat release.

[0079] The second water pump in the multi-way valve 500 provides power so that the refrigerant after absorbing heat in the first in-vehicle heat exchanger 630 is regulated by the multi-way valve 500 and enters the first evaporative heat exchanger 420 to release heat. After releasing heat, it returns to the multi-way valve 500 and enters the first in-vehicle heat exchanger 630 through the multi-way valve 500. The first in-vehicle heat exchanger 630 absorbs heat from the vehicle interior environment by blowing air through the interior fan.

[0080] The third water pump in the multi-way valve 500 provides power so that the refrigerant after absorbing heat in the second in-vehicle heat exchanger 640 is regulated by the multi-way valve 500 and enters the second evaporative heat exchanger 430 to release heat. After releasing heat, it returns to the multi-way valve 500 and enters the second in-vehicle heat exchanger 640 through the multi-way valve 500. The second in-vehicle heat exchanger 640 absorbs heat from the vehicle interior environment by blowing air through the interior fan.

[0081] Figure 5 The diagram shows a battery charging and cooling system. The high-temperature and high-pressure refrigerant discharged from the compressor 110 enters the condenser plate heat exchanger 410 for cooling and heat release. After being throttled by the first throttling element 310 and the second throttling element 320, it enters the first evaporator heat exchanger 420 and the second evaporator heat exchanger 430 for heat absorption and then enters the gas-liquid separator 210. Finally, the low-temperature and low-pressure refrigerant enters the compressor 110 for intake.

[0082] The first water pump in the multi-way valve 500 provides power so that the refrigerant after releasing heat in the first external heat exchanger 610 is regulated by the multi-way valve 500 and enters the condenser plate heat exchanger 410 to absorb heat. After absorbing heat, it returns to the multi-way valve 500 and is regulated by the multi-way valve 500 to enter the second external heat exchanger 620. The second external heat exchanger 620 releases heat to the external environment through the external fan for the first heat release. It then returns to the multi-way valve 500 and is regulated to enter the first external heat exchanger 610. The first external heat exchanger 610 releases heat to the external environment through the external fan for the second heat release.

[0083] The second and third water pumps in the multi-way valve 500 provide power so that the refrigerant after absorbing heat in the battery module 650 is regulated by the multi-way valve 500 to enter the first evaporative heat exchanger 420 and the second evaporative heat exchanger 430 to release heat and then return to the multi-way valve 500. After being regulated by the multi-way valve 500, it enters the battery module 650 to absorb the heat generated by the battery charging.

[0084] Figure 6 The diagram shows an air conditioning refrigeration + battery cooling + electric drive heat dissipation system. The high-temperature and high-pressure refrigerant discharged from the compressor 110 enters the condenser plate heat exchanger 410 for cooling and heat release. After being throttled by the first throttling device 310 and the second throttling device 320, it enters the first evaporator heat exchanger 420 and the second evaporator heat exchanger 430 for heat absorption and then enters the gas-liquid separator 210. Finally, the low-temperature and low-pressure refrigerant enters the compressor 110 for intake.

[0085] The first water pump in the multi-way valve 500 provides power so that the refrigerant after releasing heat in the first external heat exchanger 610 enters the condenser plate heat exchanger 410 through the multi-way valve 500 to absorb heat and then returns to the multi-way valve 500. After being regulated by the multi-way valve 500, it enters the first external heat exchanger 610. The first external heat exchanger 610 dissipates the heat to the external environment through the external fan.

[0086] The second water pump in the multi-way valve 500 provides power so that after the first in-vehicle heat exchanger 630 absorbs heat, it returns to the multi-way valve 500. After being regulated by the multi-way valve 500, it enters the first evaporative heat exchanger 420 to release heat and then returns to the multi-way valve 500. After being regulated by the multi-way valve 500, it enters the first in-vehicle heat exchanger 630 and is blown by the in-vehicle fan to absorb heat from the in-vehicle environment.

[0087] The third water pump in the multi-way valve 500 provides power so that the refrigerant, after absorbing heat in the battery module 650, enters the second evaporator heat exchanger 430 to release heat and then returns to the multi-way valve 500. After being regulated by the multi-way valve 500, it enters the battery module 650 to absorb the heat generated by the battery.

[0088] The fourth water pump in the multi-way valve 500 provides power so that the refrigerant after absorbing heat in the electric drive module 660 enters the second external heat exchanger 620 through the multi-way valve 500. The second external heat exchanger 620 dissipates heat to the external environment through the external fan. After heat dissipation, the refrigerant returns to the multi-way valve 500 and enters the electric drive module 660 through the multi-way valve 500 to absorb the heat generated during electric drive operation.

[0089] Figure 7 The diagram shows a drive + battery waste heat recovery system. The high-temperature and high-pressure refrigerant discharged from the compressor 110 enters the condenser plate heat exchanger 410 for cooling and heat release. After being throttled by the first throttling element 310 and the second throttling element 320, it enters the first evaporator heat exchanger 420 and the second evaporator heat exchanger 430 for heat absorption and then enters the gas-liquid separator 210. Finally, the low-temperature and low-pressure refrigerant enters the compressor 110 for intake.

[0090] The first water pump in the multi-way valve 500 provides power so that the refrigerant after releasing heat in the first in-vehicle heat exchanger 630 is regulated by the multi-way valve 500 to enter the condenser plate heat exchanger 410 to absorb heat and then return to the multi-way valve 500. After being regulated by the multi-way valve 500, it enters the second in-vehicle heat exchanger 640. The second in-vehicle heat exchanger 640 releases heat to the in-vehicle environment by blowing air through the interior fan. After the first heat release is completed, it returns to the first in-vehicle heat exchanger 630 by regulating the multi-way valve 500. The first in-vehicle heat exchanger 630 releases heat to the in-vehicle environment by blowing air through the interior fan.

[0091] The second water pump in the multi-way valve 500 provides power so that after absorbing heat in the electric drive module 660, it returns to the multi-way valve 500. After being regulated by the multi-way valve 500, it enters the first evaporative heat exchanger 420 to release heat and then returns to the multi-way valve 500. After being regulated by the multi-way valve 500, it enters the electric drive module 660 to absorb the heat generated by the electric drive.

[0092] The third water pump in the multi-way valve 500 provides power so that the refrigerant, after absorbing heat in the battery module 650, enters the second evaporator heat exchanger 430 to release heat and then returns to the multi-way valve 500. After being regulated by the multi-way valve 500, it enters the battery module 650 to absorb the heat generated by the battery.

[0093] Figure 8 The diagram shows the passenger cabin air conditioning heating system. The high-temperature and high-pressure refrigerant discharged from the compressor 110 enters the condenser plate heat exchanger 410 for cooling and heat release. After being throttled by the first throttling device 310 and the second throttling device 320, it enters the first evaporator heat exchanger 420 and the second evaporator heat exchanger 430 for heat absorption and then enters the gas-liquid separator 210. Finally, the low-temperature and low-pressure refrigerant enters the compressor 110 for intake.

[0094] The first water pump in the multi-way valve 500 provides power so that the refrigerant after releasing heat in the first in-vehicle heat exchanger 630 enters the condenser plate heat exchanger 410 through the multi-way valve 500 to absorb heat and then returns to the multi-way valve 500. After being regulated by the multi-way valve 500, it enters the first in-vehicle heat exchanger 630. The first in-vehicle heat exchanger 630 dissipates the heat into the vehicle interior environment through the air blown by the interior fan.

[0095] The second water pump in the multi-way valve 500 provides power so that the refrigerant after absorbing heat in the first external heat exchanger 610 is regulated by the multi-way valve 500 and enters the first evaporative heat exchanger 420 to release heat. After releasing heat, it returns to the multi-way valve 500 and enters the first external heat exchanger 610 through the multi-way valve 500. The first external heat exchanger 610 absorbs heat from the external environment by blowing air from the external fan.

[0096] The third water pump in the multi-way valve 500 provides power so that the refrigerant after absorbing heat in the second external heat exchanger 620 is regulated by the multi-way valve 500 and enters the second evaporative heat exchanger 430 to release heat. After releasing heat, it returns to the multi-way valve 500 and enters the second external heat exchanger 620 through the multi-way valve 500. The second external heat exchanger 620 absorbs heat from the external environment by being blown by the external fan.

[0097] It should be noted that the multi-way valve 500 can be equipped with eighteen ports, which can be connected to the water passages of the aforementioned components to form various circulation loops.

[0098] In some embodiments, the end load may also include more functional modules, such as radiant heat exchangers, seat heat exchangers, etc., which can be uniformly controlled by a multi-way valve 500 with more interfaces, thereby optimizing the allocation and utilization of energy at various locations of the electric heavy-duty truck.

[0099] like Figures 1 to 8 As shown, an exemplary embodiment of this application provides an electric vehicle that includes the thermal management system of any of the above embodiments. The electric vehicle may be an electric heavy-duty truck.

[0100] Among them, the electric truck vehicle thermal management system is designed to address the large load and multiple thermal management terminals of electric trucks. Through the integrated load linkage system design, it integrates the three major thermal management systems of electric trucks into one, reduces the cost and components of the thermal management system, and achieves refined utilization of the vehicle's energy.

[0101] The electric truck's load capacity can be comprehensively adjusted by regulating the 18-way water valve 500. Since the heat exchangers inside and outside the vehicle are all liquid-cooled, the heat exchangers can maximize the utilization of heat exchange with the inside and outside environment of the vehicle.

[0102] Two evaporative plate heat exchangers simultaneously meet the dual temperature requirements of air conditioning cooling and battery cooling.

[0103] The in-vehicle dual liquid-cooled heat exchanger, combined with an 18-way water valve for regulation, can achieve three modes: simultaneous cooling, simultaneous heating, and cooling-heating compatibility. This meets the vehicle's air conditioning requirements. When simultaneously cooling or heating, it effectively increases the heat exchanger area, improving the heat transfer coefficient and heat transfer capacity. Under the same load demand, it effectively reduces system power consumption and improves system energy efficiency. In other words, when the first in-vehicle heat exchanger 630 and the second in-vehicle heat exchanger 640 are used in conjunction with the multi-way valve 500, the two in-vehicle heat exchangers can simultaneously operate in cooling mode, simultaneously operate in heating mode, or operate in a cooling-heating mode.

[0104] The external dual liquid-cooled heat exchanger, combined with an 18-way water valve for regulation, allows for series, parallel, and individual use of the two external liquid-cooled heat exchangers (i.e., the first external heat exchanger 610 and the second external heat exchanger 620), maximizing their rational utilization. Specifically, when the electric heavy-duty truck is in normal operation, one of the external heat exchangers 610 and 620 can be used to dissipate heat from the condenser heat exchanger 410, transferring heat generated by the in-vehicle air conditioning and battery module 650, while the other external heat exchanger can be used to dissipate heat from the electric drive module 660. Alternatively, when the electric heavy-duty truck is charging, the first and second external heat exchangers 610 and 620 can work together to dissipate heat from the condenser heat exchanger 410, improving heat exchange efficiency, reducing condensation pressure, and lowering system operating power consumption.

[0105] The serial numbers in the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0106] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0107] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0108] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0109] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0110] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0111] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A thermal management system applied to electric heavy-duty trucks, characterized in that, include: A refrigerant circulation system includes a compressor (110), a condensing heat exchanger (410), a first throttling element (310), a second throttling element (320), a first evaporating heat exchanger (420), a second evaporating heat exchanger (430), and a gas-liquid separator (210) connected by refrigerant fluid. The first evaporating heat exchanger (420) and the first throttling element (310) form a first series pipeline, and the second evaporating heat exchanger (430) and the second throttling element (320) form a second series pipeline. The first series pipeline and the second series pipeline are connected in parallel and in series with the condensing heat exchanger (410) to form multiple refrigerant circulation loops. The water circuit integrated control device includes multiple water pumps, a multi-way valve (500) and a water circuit integrated plate. The water circuit integrated plate is equipped with multiple heat exchange pipelines that are respectively connected to the water circuits of the condensing heat exchanger (410), the first evaporating heat exchanger (420) and the second evaporating heat exchanger (430). Multiple end loads, the water circuit integration board integrates multiple load pipes that are respectively connected to the water circuits of each end load; The multi-way valve (500) has multiple interfaces connecting the heat exchange pipelines and the load pipelines, so as to achieve the connection between different interfaces in the multi-way valve (500) and different heat exchange pipelines and / or different load pipelines by dynamically controlling the multi-way valve (500), and to cooperate with multiple water pumps and multiple refrigerant circulation loops to realize the cooling or heating of the multiple terminal loads.

2. The thermal management system according to claim 1, characterized in that, The condensing heat exchanger (410) is a condensing plate heat exchanger; Both the first evaporative heat exchanger (420) and the second evaporative heat exchanger (430) are evaporative plate heat exchangers; Both the first throttling element (310) and the second throttling element (320) are electronic expansion valves.

3. The thermal management system according to claim 1, characterized in that, The plurality of end loads include a first external heat exchanger (610) and a second external heat exchanger (620); The load lines of the first external heat exchanger (610) and the load lines of the second external heat exchanger (620) are connected to different interfaces of the multi-way valve (500) to form various external heat exchange circulation loops.

4. The thermal management system according to claim 3, characterized in that, The first external heat exchanger (610) and the second external heat exchanger (620) are both liquid-cooled heat exchangers and are connected in parallel; Furthermore, the first external heat exchanger (610) and the second external heat exchanger (620) share the same external fan; The external fan is an external fan installed on an electric heavy-duty truck.

5. The thermal management system according to claim 3, characterized in that, Each external heat exchange loop of the first external heat exchanger (610) and the second external heat exchanger (620) can be operated simultaneously under control, and during the simultaneous controlled operation, they cooperate with the first evaporative heat exchanger (420) and the second evaporative heat exchanger (430).

6. The thermal management system according to claim 3, characterized in that, The plurality of end loads include a first in-vehicle heat exchanger (630) and a second in-vehicle heat exchanger (640); The load lines of the first in-vehicle heat exchanger (630) and the load lines of the second in-vehicle heat exchanger (640) are connected to different interfaces of the multi-way valve (500) to form each in-vehicle heat exchange circulation loop.

7. The thermal management system according to claim 6, characterized in that, The first in-vehicle heat exchanger (630) and the second in-vehicle heat exchanger (640) are both liquid-cooled heat exchangers and are connected in parallel; Furthermore, the first in-vehicle heat exchanger (630) and the second in-vehicle heat exchanger (640) share the same internal fan; The internal fan is an internal fan installed on an electric heavy-duty truck.

8. The thermal management system according to claim 6, characterized in that, During controlled operation, each in-vehicle heat exchange loop of the first in-vehicle heat exchanger (630) and the second in-vehicle heat exchanger (640) operates simultaneously in cooperation with the first evaporative heat exchanger (420) and the second evaporative heat exchanger (430).

9. The thermal management system according to claim 6, characterized in that, When the first in-vehicle heat exchanger (630) and the second in-vehicle heat exchanger (640) are used in conjunction with the multi-way valve (500), the two in-vehicle heat exchangers can simultaneously be in cooling mode, simultaneously in heating mode, or in a cooling-heating mode.

10. The thermal management system according to any one of claims 3 to 9, characterized in that, The plurality of end loads also include a battery module (650) and an electric drive module (660); The battery module (650) is used to provide power support for electric heavy-duty trucks. The battery module (650) is connected to different interfaces of the multi-way valve (500) to form a battery heat exchange circulation loop. The electric drive module (660) is used to drive and control the operation of the electric heavy truck. The electric drive module (660) is connected to different interfaces of the multi-way valve (500) to form each electric drive heat exchange loop. In the controlled operation, the battery heat exchange circulation loop of the battery module (650) and the electric drive heat exchange circulation loop of the electric drive module (660) work together with the first evaporator heat exchanger (420) and the second evaporator heat exchanger (430).

11. The thermal management system according to claim 10, characterized in that, When the electric heavy truck is in normal driving, one of the first external heat exchanger (610) and the second external heat exchanger (620) can be used to dissipate heat for the condenser heat exchanger (410), and the other external heat exchanger can be used to dissipate heat for the electric drive module (660). or, When the electric heavy-duty truck is in a charging state, the first external heat exchanger (610) and the second external heat exchanger (620) can work together to dissipate heat from the condenser heat exchanger (410).

12. An electric vehicle, characterized in that, Includes the thermal management system as described in any one of claims 1 to 11; The electric vehicle in question is an electric heavy-duty truck.

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