Temperature control method of vehicle thermal management system with energy storage and vehicle

Abstract

The application provides a temperature control method of a vehicle thermal management system with energy storage and an automobile. The vehicle thermal management system comprises a cooling liquid circuit and a refrigerant circuit. The method comprises: receiving a temperature control request, and obtaining temperature information associated with the identifier of the sending end according to the identifier of the sending end in the temperature control request; determining whether to perform temperature control on the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system according to the temperature control request and the temperature information associated with the identifier of the sending end; when it is determined to perform temperature control on the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system, obtaining a matched temperature control mode, and performing corresponding temperature control processing in the matched temperature control mode. The vehicle thermal management system can be operated in a temperature control mode suitable for the current environment and driving state.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicles, in particular to a temperature control method of a vehicle thermal management system with energy storage and a vehicle. BACKGROUND

[0002] The existing thermal management system of a new energy vehicle cools or heats the passenger compartment according to a temperature control request of the passenger compartment, cools or heats the battery according to a temperature control request of the battery, and cools the electric drive module according to a temperature control request of the electric drive.

[0003] However, in actual application, there may be a demand for simultaneously controlling the temperature of the passenger compartment, the battery and / or the electric drive. Even when the temperature of the passenger compartment, the battery or the electric drive is controlled individually, there may be multiple temperature control modes due to different current environments and driving states. Controlling each cooling and heating unit separately makes the implementation of temperature control very complex, and even causes logical errors in the control of components in the system, making it difficult to achieve temperature control. In addition, few new energy vehicles are currently equipped with energy storage systems, so there is no reasonable temperature control method for vehicle thermal management systems with energy storage systems.

[0004] Therefore, there is an urgent need for a temperature control method for a vehicle thermal management system with energy storage, which can enable the vehicle thermal management system to operate in a temperature control mode suitable for the current environment and driving state. SUMMARY

[0005] The present application provides a temperature control method for a vehicle thermal management system with energy storage and a vehicle, to solve the problem that the existing new energy vehicles lack a control method for enabling the vehicle thermal management system to operate in a temperature control mode suitable for the current environment and driving state.

[0006] In a first aspect, the present application provides a temperature control method for a vehicle thermal management system with energy storage, the vehicle thermal management system comprising a cooling liquid circuit and a refrigerant circuit; wherein the method comprises: receiving a temperature control request and obtaining temperature information associated with the identifier of the sending end according to the identifier of the sending end in the temperature control request; determining whether to control the temperature of the battery, the passenger compartment and / or the electric drive module in the vehicle thermal management system according to the temperature control request and the temperature information associated with the identifier of the sending end; when it is determined to control the temperature of the battery, the passenger compartment and / or the electric drive module in the vehicle thermal management system, obtaining a matching temperature control mode and performing corresponding temperature control processing in the matching temperature control mode.

[0007] In an embodiment, when the identifier of the sending end is an electric drive identifier, the obtaining the temperature information associated with the identifier of the sending end comprises: obtaining an electric drive module temperature and an electric drive circuit cooling liquid temperature associated with the electric drive identifier; and the determining whether to perform temperature control on the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system according to the temperature control request and the temperature information associated with the identifier of the sending end comprises: when the temperature control request is a cooling request, the electric drive module temperature is greater than an electric drive temperature threshold, and the electric drive circuit cooling liquid temperature is greater than a first electric drive cooling liquid temperature threshold, determining to perform cooling on the electric drive module in the vehicle thermal management system.

[0008] In an embodiment, when the identifier of the sending end is a battery identifier, the obtaining the temperature information associated with the identifier of the sending end comprises: obtaining a battery temperature associated with the battery identifier; and the determining whether to perform temperature control on the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system according to the temperature control request and the temperature information associated with the identifier of the sending end comprises: when the temperature control request is a cooling request, and the battery temperature is greater than a first battery temperature threshold, determining to perform cooling on the battery in the vehicle thermal management system; and when the temperature control request is a heating request, and the battery temperature is less than a second battery temperature threshold, determining to perform heating on the battery in the vehicle thermal management system.

[0009] In an embodiment, when the identifier of the sending end is a passenger cabin identifier, the obtaining the temperature information associated with the identifier of the sending end comprises: obtaining an ambient temperature and a passenger cabin temperature associated with the passenger cabin identifier; and the determining whether to perform temperature control on the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system according to the temperature control request and the temperature information associated with the identifier of the sending end comprises: when the temperature control request is a cooling request, the ambient temperature is greater than a first ambient temperature threshold, and the passenger cabin temperature is greater than a first passenger cabin temperature threshold, determining to perform cooling on the passenger cabin in the vehicle thermal management system; when the temperature control request is a heating request, the ambient temperature is less than a second ambient temperature threshold, and the passenger cabin temperature is less than a second passenger cabin temperature threshold, determining to perform heating on the passenger cabin in the vehicle thermal management system; and when the temperature control request is a dehumidification request, the ambient temperature is greater than a second ambient temperature threshold, and the passenger cabin temperature is greater than a third passenger cabin temperature threshold, determining to perform dehumidification on the passenger cabin in the vehicle thermal management system.

[0010] In an embodiment, the obtaining the matched temperature control mode when determining temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: when determining refrigeration of the electric drive module in the vehicle thermal management system, obtaining a current ambient temperature, a battery coolant temperature and an electric drive circuit coolant temperature; when the current ambient temperature is greater than a first ambient temperature threshold, the electric drive circuit coolant temperature is greater than a first electric drive coolant temperature threshold, and the battery coolant temperature is greater than a first battery coolant temperature threshold, obtaining the matched temperature control mode as an electric drive refrigeration mode; when the current ambient temperature is greater than the first ambient temperature threshold, the electric drive circuit coolant temperature is greater than the first electric drive coolant temperature threshold, and the battery coolant temperature is less than the first battery coolant temperature threshold, obtaining the matched temperature control mode as a first electric drive mixed refrigeration mode.

[0011] In an embodiment, the obtaining the matched temperature control mode when determining temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: when determining refrigeration of the battery in the vehicle thermal management system, obtaining a current ambient temperature, a battery temperature, an electric drive module temperature and an electric drive circuit coolant temperature; when the current ambient temperature is greater than a first ambient temperature threshold, the battery temperature is greater than a first battery temperature threshold, the electric drive module temperature is less than an electric drive temperature threshold, and the electric drive circuit coolant temperature is less than a first electric drive coolant temperature threshold and greater than a second electric drive temperature threshold, obtaining the matched temperature control mode as a first battery refrigeration mode; when the current ambient temperature is greater than the first ambient temperature threshold, the battery temperature is greater than the first battery temperature threshold, the electric drive module temperature is less than the electric drive temperature threshold, and the electric drive circuit coolant temperature is less than a second electric drive coolant temperature threshold, obtaining the matched temperature control mode as a second battery refrigeration mode; when the current ambient temperature is greater than the first ambient temperature threshold, the battery temperature is greater than the first battery temperature threshold, the electric drive module temperature is less than the electric drive temperature threshold, and the electric drive circuit coolant temperature is less than the first electric drive coolant temperature threshold, obtaining the matched temperature control mode as a third battery refrigeration mode; when the current ambient temperature is greater than the first ambient temperature threshold, the battery temperature is greater than a third battery temperature threshold and less than a fourth battery temperature threshold, the electric drive module temperature is less than the electric drive temperature threshold, and the electric drive circuit coolant temperature is less than the second electric drive coolant temperature threshold, obtaining the matched temperature control mode as a fourth battery refrigeration mode.

[0012] In a specific embodiment, the acquiring a matched temperature control mode when determining temperature control on the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: when determining heating for the battery in the vehicle thermal management system, acquiring a current ambient temperature, a battery temperature, a passenger cabin temperature and an electric drive circuit coolant temperature; when the current ambient temperature is less than a second ambient temperature threshold, the battery temperature is less than a fifth battery temperature threshold, the electric drive circuit coolant temperature is greater than a third electric drive coolant temperature threshold, and the passenger cabin temperature is greater than a fourth passenger cabin temperature threshold, then acquiring a matched temperature control mode as a first battery heating mode; when the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, and the electric drive circuit coolant temperature is less than the third electric drive coolant temperature threshold, then acquiring a matched temperature control mode as a second battery heating mode; when the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, and the electric drive circuit coolant temperature is greater than a first electric drive coolant temperature threshold, then acquiring a matched temperature control mode as a third battery heating mode; when the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, the electric drive circuit coolant temperature is greater than the third electric drive coolant temperature threshold, and the passenger cabin temperature is less than the fourth passenger cabin temperature threshold, then acquiring a matched temperature control mode as a fourth battery heating mode.

[0013] In a specific embodiment, the acquiring a matched temperature control mode when determining temperature control on the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: when determining heating for the battery in the vehicle thermal management system, acquiring a current ambient temperature, a battery temperature, a passenger cabin temperature and an electric drive circuit coolant temperature; when the current ambient temperature is less than a second ambient temperature threshold, the battery temperature is less than a fifth battery temperature threshold, the electric drive circuit coolant temperature is greater than a third electric drive coolant temperature threshold, and the passenger cabin temperature is greater than a fourth passenger cabin temperature threshold, then acquiring a matched temperature control mode as a first battery heating mode; when the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, and the electric drive circuit coolant temperature is less than the third electric drive coolant temperature threshold, then acquiring a matched temperature control mode as a second battery heating mode; when the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, and the electric drive circuit coolant temperature is greater than a first electric drive coolant temperature threshold, then acquiring a matched temperature control mode as a third battery heating mode; when the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, the electric drive circuit coolant temperature is greater than the third electric drive coolant temperature threshold, and the passenger cabin temperature is less than the fourth passenger cabin temperature threshold, then acquiring a matched temperature control mode as a fourth battery heating mode.

[0014] In a specific embodiment, the obtaining the matched temperature control mode when determining temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: when determining heating of the passenger cabin in the vehicle thermal management system, obtaining a current ambient temperature, a battery temperature and an electric drive circuit coolant temperature; when the current ambient temperature is less than a second ambient temperature threshold, the battery temperature is greater than a sixth battery temperature threshold, and the electric drive circuit coolant temperature is less than a third electric drive coolant temperature threshold, obtaining the matched temperature control mode as a first passenger cabin heating mode; when the current ambient temperature is less than a fourth ambient temperature threshold, the battery temperature is greater than the sixth battery temperature threshold, and the electric drive circuit coolant temperature is less than the third electric drive coolant temperature threshold, obtaining the matched temperature control mode as a second passenger cabin heating mode; and when the current ambient temperature is less than the fourth ambient temperature threshold, the battery temperature is greater than the sixth battery temperature threshold, and the electric drive circuit coolant temperature is greater than a first electric drive coolant temperature threshold, obtaining the matched temperature control mode as a third passenger cabin heating mode.

[0015] In a specific embodiment, the obtaining the matched temperature control mode when determining temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: when determining dehumidification of the passenger cabin in the vehicle thermal management system, obtaining the matched temperature mode as a passenger cabin dehumidification mode.

[0016] In a specific embodiment, the obtaining the matched temperature control mode when determining temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: when determining cooling of the passenger cabin and the battery in the vehicle thermal management system, obtaining a current ambient temperature, a battery temperature and an electric drive circuit coolant temperature; when the current ambient temperature is greater than a first ambient temperature threshold, and the battery temperature is less than a first battery temperature threshold, obtaining the matched temperature control mode as a first passenger cabin mixed cooling mode; when the current ambient temperature is greater than a third ambient temperature threshold, the battery temperature is greater than the first battery temperature threshold, and the electric drive circuit coolant temperature is less than a first electric drive coolant temperature threshold and greater than a second electric drive coolant temperature threshold, obtaining the matched temperature control mode as a second passenger cabin mixed cooling mode; and when the current ambient temperature is greater than the third ambient temperature threshold, the battery temperature is greater than the first battery temperature threshold, and the electric drive circuit coolant temperature is less than the second electric drive coolant temperature threshold, obtaining the matched temperature control mode as a third passenger cabin mixed cooling mode.

[0017] In an embodiment, the obtaining the matched temperature control mode when determining temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: when determining refrigeration of the electric drive and the battery in the vehicle thermal management system, obtaining a current ambient temperature, a battery temperature and an electric drive circuit cooling liquid temperature; when the current ambient temperature is greater than a first ambient temperature threshold, the battery temperature is greater than a first battery temperature threshold, and the electric drive circuit cooling liquid temperature is greater than a first electric drive cooling liquid temperature threshold, obtaining the matched temperature control mode as a second electric drive mixed refrigeration mode.

[0018] In an embodiment, the obtaining the matched temperature control mode when determining temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: when determining refrigeration of the electric drive and the passenger cabin in the vehicle thermal management system, obtaining the matched temperature control mode as a third electric drive mixed refrigeration mode.

[0019] In an embodiment, the obtaining the matched temperature control mode when determining temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: when determining refrigeration of the electric drive, the passenger cabin and the battery in the vehicle thermal management system, obtaining the matched temperature control mode as a fourth electric drive mixed refrigeration mode.

[0020] In an embodiment, the obtaining the matched temperature control mode when determining temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: when determining heating of the passenger cabin and the battery in the vehicle thermal management system, obtaining a current ambient temperature and an electric drive circuit cooling liquid temperature; when the current ambient temperature is less than a second ambient temperature threshold and the electric drive circuit cooling liquid temperature is less than a third electric drive cooling liquid temperature threshold, obtaining the matched temperature control mode as a first mixed heating mode; when the current ambient temperature is less than the second ambient temperature threshold and the electric drive circuit cooling liquid temperature is greater than a first electric drive cooling liquid temperature threshold, obtaining the matched temperature control mode as a second mixed heating mode; when the current ambient temperature is less than the second ambient temperature threshold and the electric drive circuit cooling liquid temperature is greater than the third electric drive cooling liquid temperature threshold and less than the first electric drive cooling liquid temperature threshold, obtaining the matched temperature control mode as a third mixed heating mode.

[0021] In an embodiment, the method further comprises: obtaining a current vehicle thermal management state, a current ambient temperature, and a current battery temperature; determining whether to enter a heat storage or cold storage mode; when the current ambient temperature is greater than a first ambient temperature threshold, there is no cooling request for the passenger compartment, there is no cooling request for the battery, and the battery temperature is greater than a third battery temperature threshold, determining that the vehicle thermal management system enters a cold storage mode; when the current ambient temperature is less than a second ambient temperature threshold, there is no heating request for the passenger compartment, there is no heating request for the battery, and the battery temperature is less than a fifth battery temperature threshold, determining that the vehicle thermal management system enters a heat storage mode.

[0022] In an embodiment, the method further comprises: when the battery temperature reaches a battery target request temperature or the vehicle thermal management system receives a request to exit a battery cooling or heating state, exiting a current battery cooling mode or battery heating mode; when there is no cooling request for the electric drive or the electric drive circuit cooling liquid temperature reaches an electric drive target request temperature, exiting a current electric drive cooling mode; when the passenger compartment temperature reaches a passenger compartment target request temperature or the vehicle thermal management system receives a request to exit a passenger compartment cooling or heating state, exiting a current passenger compartment cooling mode or passenger compartment heating mode; when the battery temperature reaches a battery target request temperature and the battery cooler outlet cooling liquid temperature reaches a cooling liquid target request temperature, exiting a current cold storage mode or heat storage mode.

[0023] In a second aspect, the application provides an electronic control unit, comprising: a processor, a memory, and a communication interface; the memory is configured to store executable instructions of the processor; wherein the processor is configured to execute the temperature control method of the vehicle thermal management system with energy storage according to the first aspect by executing the executable instructions.

[0024] In a third aspect, the application provides a new energy vehicle, comprising: an electronic control unit according to the second aspect and a vehicle thermal management system with energy storage.

[0025] The application provides a temperature control method of a vehicle thermal management system with energy storage and an automobile, the vehicle thermal management system comprising: a cooling liquid circuit and a refrigerant circuit; the method comprising: receiving a temperature control request, and obtaining temperature information associated with the identifier of a sending end according to the identifier of the sending end in the temperature control request; determining whether to perform temperature control on a battery, a passenger cabin and / or an electric drive module in the vehicle thermal management system according to the temperature control request and the temperature information associated with the identifier of the sending end; when it is determined to perform temperature control on the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system, obtaining a matched temperature control mode, and performing corresponding temperature control processing in the matched temperature control mode. Compared with the temperature control of the existing thermal management system of a new energy automobile according to the refrigeration or heating request of the passenger cabin, the battery and the electric drive, when the temperature control request is received, the application determines whether to perform temperature control on the passenger cabin, the battery and / or the electric drive in combination with the temperature information associated with the identifier of the sending end, and then obtains a matched temperature control mode to perform corresponding temperature control processing, so that the vehicle thermal management system can operate in a temperature control mode suitable for the current environment and driving state. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0027] Figure 1 A structural schematic diagram of a vehicle thermal management system with energy storage provided by the application is provided.

[0028] Figure 2 A flowchart of a temperature control method embodiment one of a vehicle thermal management system with energy storage provided by the application is provided.

[0029] Figure 3 A flowchart of a temperature control method embodiment two of a vehicle thermal management system with energy storage provided by the application is provided.

[0030] Figure 4 A flowchart of a temperature control method embodiment three of a vehicle thermal management system with energy storage provided by the application is provided.

[0031] Figure 5 A flowchart of a temperature control method embodiment four of a vehicle thermal management system with energy storage provided by the application is provided.

[0032] Figure 6A structure schematic diagram of an electronic control unit is provided in the present application.

[0033] Reference signs:

[0034] 101: cooling liquid circuit; 102: refrigerant circuit; 103: water-cooled air cooler; 111: radiator; 121: integrated electric drive and electric control module; 131: first three-way water valve; 141: second three-way water valve; 151: third three-way water valve; 161: electric drive circuit water pump; 171: integrated charger module; 181: four-way valve; 112: external air cooler; 122: internal air cooler; 201: cooling liquid expansion pot; 202: battery circuit water pump; 203: battery; 204: manual exhaust valve; 205: fan; 206: battery cooling circuit; 301: compressor; 302: heat regenerator; 303: gas-liquid separator; 304: first stop valve; 305: second stop valve; 306: third stop valve; 307: battery cooler; 308: fourth stop valve; 309: fifth stop valve; 310: sixth stop valve; 311: battery cooler inlet electronic expansion valve; 312: evaporator inlet electronic expansion valve; 313: external air cooler outlet electronic expansion valve; 601: evaporator; 602: blower. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments made by those skilled in the art according to the inspiration of the embodiments of the present application are within the scope of protection of the present application.

[0036] The terms "first", "second", "third", "fourth" and the like (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0037] First, the terms involved in the present application are explained:

[0038] Battery cooler: Used in battery thermal management systems, it removes heat generated during battery operation through coolant or provides heat to the battery through coolant, keeping the battery within a suitable operating temperature range, thereby improving battery life.

[0039] In the existing technology, the thermal management system of existing new energy vehicles cools or heats the passenger compartment according to the temperature control request of the passenger compartment, cools or heats the battery according to the temperature control request of the battery, and cools the electric drive module according to the temperature control request of the electric drive.

[0040] However, in practical applications, there may be a need to simultaneously control the temperature of the passenger compartment, battery, and / or electric drive. Even when controlling the temperature of the passenger compartment, battery, or electric drive individually, multiple temperature control modes may exist depending on the current environment and driving conditions. Controlling each cooling and heating unit separately would make temperature control extremely complex, and could even lead to logical errors in the control of components within the system, making temperature control difficult to achieve. Furthermore, very few new energy vehicles are currently equipped with energy storage systems; therefore, there is currently no reasonable temperature control method for vehicle thermal management systems with energy storage systems.

[0041] Based on the above-mentioned technical problems, the technical conception process of this application is as follows: How to provide a temperature control method for a vehicle thermal management system with energy storage, which enables the vehicle thermal management system to operate in a temperature control mode suitable for the current environment and driving conditions.

[0042] The technical solution of this application will now be described in detail through specific embodiments. It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0043] Figure 1 This is a schematic diagram of a vehicle thermal management system provided in this application. Figure 1 As shown, the vehicle thermal management system includes: a coolant circuit 101, a refrigerant circuit 102, a water-cooled air cooler 103 for heat exchange between the coolant and the refrigerant, and a battery cooler 307 for energy storage.

[0044] like Figure 1As shown by solid lines, the cooling liquid circuit 101 includes a radiator 111, an integrated electric drive and electric control module 121, a first three-way water valve 131, a second three-way water valve 141, a third three-way water valve 151, an electric drive circuit water pump 161, an integrated charger module 171, a four-way valve 181, a cooling liquid expansion tank 201, a battery circuit water pump 202, a battery 203, a manual exhaust valve 204, and a fan 205. Only cooling liquid flows in the cooling liquid circuit 101, which is mainly used to cool the integrated electric drive and electric control module 121 and the integrated charger module 171, and cool the battery.

[0045] As shown by solid lines, the cooling liquid circuit 101 includes a radiator 111, an integrated electric drive and electric control module 121, a first three-way water valve 131, a second three-way water valve 141, a third three-way water valve 151, an electric drive circuit water pump 161, an integrated charger module 171, a four-way valve 181, a cooling liquid expansion tank 201, a battery circuit water pump 202, a battery 203, a manual exhaust valve 204, and a fan 205. Only cooling liquid flows in the cooling liquid circuit 101, which is mainly used to cool the integrated electric drive and electric control module 121 and the integrated charger module 171, and cool the battery. Figure 1 As shown by solid lines, the cooling liquid circuit 101 includes a radiator 111, an integrated electric drive and electric control module 121, a first three-way water valve 131, a second three-way water valve 141, a third three-way water valve 151, an electric drive circuit water pump 161, an integrated charger module 171, a four-way valve 181, a cooling liquid expansion tank 201, a battery circuit water pump 202, a battery 203, a manual exhaust valve 204, and a fan 205. Only cooling liquid flows in the cooling liquid circuit 101, which is mainly used to cool the integrated electric drive and electric control module 121 and the integrated charger module 171, and cool the battery.

[0046] As shown by solid lines, the cooling liquid circuit 101 includes a radiator 111, an integrated electric drive and electric control module 121, a first three-way water valve 131, a second three-way water valve 141, a third three-way water valve 151, an electric drive circuit water pump 161, an integrated charger module 171, a four-way valve 181, a cooling liquid expansion tank 201, a battery circuit water pump 202, a battery 203, a manual exhaust valve 204, and a fan 205. Only cooling liquid flows in the cooling liquid circuit 101, which is mainly used to cool the integrated electric drive and electric control module 121 and the integrated charger module 171, and cool the battery. Figure 1 As shown by solid lines, the cooling liquid circuit 101 includes a radiator 111, an integrated electric drive and electric control module 121, a first three-way water valve 131, a second three-way water valve 141, a third three-way water valve 151, an electric drive circuit water pump 161, an integrated charger module 171, a four-way valve 181, a cooling liquid expansion tank 201, a battery circuit water pump 202, a battery 203, a manual exhaust valve 204, and a fan 205. Only cooling liquid flows in the cooling liquid circuit 101, which is mainly used to cool the integrated electric drive and electric control module 121 and the integrated charger module 171, and cool the battery.

[0047] As shown by solid lines, the cooling liquid circuit 101 includes a radiator 111, an integrated electric drive and electric control module 121, a first three-way water valve 131, a second three-way water valve 141, a third three-way water valve 151, an electric drive circuit water pump 161, an integrated charger module 171, a four-way valve 181, a cooling liquid expansion tank 201, a battery circuit water pump 202, a battery 203, a manual exhaust valve 204, and a fan 205. Only cooling liquid flows in the cooling liquid circuit 101, which is mainly used to cool the integrated electric drive and electric control module 121 and the integrated charger module 171, and cool the battery. Figure 1 As shown by dashed lines, the refrigerant circuit 102 includes an external air cooler 112, an internal air cooler 122, a compressor 301, a regenerator 302, a gas-liquid separator 303, a first stop valve 304, a second stop valve 305, a third stop valve 306, a fourth stop valve 308, a fifth stop valve 309, a sixth stop valve 310, a battery cooler inlet electronic expansion valve 311, an evaporator inlet electronic expansion valve 312, an external air cooler outlet electronic expansion valve 313, an evaporator 601, and a blower 602. Only refrigerant flows in the refrigerant circuit 102, which is mainly used to cool or heat the passenger compartment or the battery cooler.

[0048] The vehicle thermal management system further includes a water-cooled air cooler 103, which includes passages for cooling liquid and refrigerant to flow through respectively, and the cooling liquid and the refrigerant can exchange heat in the water-cooled air cooler 103.

[0049] The vehicle thermal management system further includes a battery cooler 307. The cold energy generated in the refrigerant circuit 102 can be stored in the battery cooler 307 when the refrigerant flows through the battery cooler 307, and the cold energy in the cooling liquid circuit can be stored in the battery cooler 307 when the cooling liquid flows through the battery cooler 307. The cold energy stored in the battery cooler 307 can be used to cool or heat the battery 203 through the battery cooling circuit 206, or can be used to cool or heat the passenger compartment.

[0050] Figure 2 An embodiment of a temperature control method of a vehicle thermal management system with energy storage is provided. Referring to FIG. 1, the temperature control method based on the vehicle thermal management system includes the following steps: Figure 2

[0051] Step S201: Receive a temperature control request, and obtain temperature information associated with the identifier of the sending end according to the identifier of the sending end in the temperature control request.

[0052] In this embodiment, the sending end can be the electric drive, the battery, and the passenger compartment. When the sending end is the electric drive, the temperature control request can be a cooling request; when the sending end is the battery, the temperature control request can be a cooling request or a heating request; when the sending end is the passenger compartment, the temperature control request can be a cooling request, a heating request, or a dehumidification request.

[0053] In this embodiment, the temperature information associated with the identifier of the sending end can be the ambient temperature, the passenger compartment temperature, the battery temperature, the electric drive module temperature, and the electric drive circuit cooling liquid temperature, etc.

[0054] Step S202: Determine whether to perform temperature control on the battery, the passenger compartment, and / or the electric drive module in the vehicle thermal management system according to the temperature control request and the temperature information associated with the identifier of the sending end.

[0055] In this embodiment, whether to perform temperature control on the battery, the passenger compartment, and / or the electric drive module is determined according to the temperature control request and the temperature information associated with the identifier of the sending end. For example, according to the temperature control request "cooling request" sent by the passenger compartment and the associated temperature information "ambient temperature 30°C, passenger compartment temperature 35°C", it is determined to cool the passenger compartment.

[0056] Step S203: When it is determined to perform temperature control on the battery, the passenger compartment, and / or the electric drive module in the vehicle thermal management system, obtain a matching temperature control mode, and perform corresponding temperature control processing in the matching temperature control mode.

[0057] ​In the embodiment, when it is determined to perform temperature control on the battery, the passenger cabin and / or the electric drive module, a matched temperature control mode is acquired to perform corresponding temperature control processing.

[0058] Exemplarily, when it is determined to perform refrigeration on the passenger cabin, the matched temperature control mode is the first passenger cabin refrigeration mode. Then, in the first passenger cabin refrigeration mode, the first, fourth and sixth shut-off valves on the refrigerant circuit are turned on, the second, third and fifth shut-off valves are turned off, the battery cooler inlet electronic expansion valve is turned off, and the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degrees corresponding to the first passenger cabin refrigeration mode to perform refrigeration on the passenger cabin through the refrigerant circuit.

[0059] In the embodiment, a temperature control request is received, and temperature information associated with the identifier of the sending end in the temperature control request is acquired. Whether to perform temperature control on the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system is determined according to the temperature control request and the temperature information associated with the identifier of the sending end. When it is determined to perform temperature control on the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system, a matched temperature control mode is acquired, and corresponding temperature control processing is performed in the matched temperature control mode. Compared with the existing new energy vehicle thermal management system which performs temperature control according to the refrigeration or heating request of the passenger cabin, the battery and the electric drive, the present application determines whether to perform temperature control on the passenger cabin, the battery and / or the electric drive in combination with the temperature information associated with the identifier of the sending end when the temperature control request is received, and then acquires a matched temperature control mode to perform corresponding temperature control processing, so that the vehicle thermal management system can operate in a temperature control mode suitable for the current environment and driving state.

[0060] Figure 3 A flowchart of a temperature control method embodiment one of a vehicle thermal management system with energy storage provided by the present application is shown in the above Figure 2 Based on the above Figure 3 embodiment, the steps S201 to S202 specifically include the following steps:

[0061] Step S301: receiving a temperature control request.

[0062] Step S302: when the identifier of the sending end is the identifier of the electric drive, the electric drive module temperature and the electric drive circuit cooling liquid temperature associated with the identifier of the electric drive are acquired.

[0063] Step S303: When the temperature control request is a cooling request, the electric drive module temperature is greater than the electric drive temperature threshold, and the electric drive circuit coolant temperature is greater than the first electric drive coolant temperature threshold, it is determined to cool the electric drive module in the vehicle thermal management system. End.

[0064] In this embodiment, the vehicle thermal management system receives a cooling request sent by the electric drive, and the electric drive module temperature and the electric drive circuit coolant temperature are obtained. When the electric drive module temperature is greater than the electric drive temperature threshold, and the electric drive circuit coolant temperature is greater than the first electric drive coolant temperature threshold, it is determined to cool the electric drive module. Exemplarily, the electric drive temperature threshold is 100°C, and the first electric drive coolant temperature threshold is 60°C.

[0065] Step S304: When the identifier of the sending end is the identifier of the battery, the battery temperature associated with the identifier of the battery is obtained.

[0066] Step S305: When the temperature control request is a cooling request, and the battery temperature is greater than the first battery temperature threshold, it is determined to cool the battery in the vehicle thermal management system. End.

[0067] Step S306: When the temperature control request is a heating request, and the battery temperature is less than the second battery temperature threshold, it is determined to heat the battery in the vehicle thermal management system. End.

[0068] In this embodiment, the vehicle thermal management system receives a cooling request sent by the battery, and the battery temperature is obtained. When the battery temperature is greater than the first battery temperature threshold, it is determined to cool the battery. Exemplarily, the first battery temperature threshold is 38°C.

[0069] In this embodiment, the vehicle thermal management system receives a heating request sent by the battery, and the battery temperature is obtained. When the battery temperature is less than the second battery temperature threshold, it is determined to heat the battery. Exemplarily, the second battery temperature threshold is -10°C.

[0070] Step S307: When the identifier of the sending end is the identifier of the passenger compartment, the ambient temperature and the passenger compartment temperature associated with the identifier of the passenger compartment are obtained.

[0071] Step S308: When the temperature control request is a cooling request, the ambient temperature is greater than the first ambient temperature threshold, and the passenger compartment temperature is greater than the first passenger compartment temperature threshold, it is determined to cool the passenger compartment in the vehicle thermal management system. End.

[0072] Step S309: When the temperature control request is a heating request, the ambient temperature is less than the second ambient temperature threshold, and the passenger compartment temperature is less than the second passenger compartment temperature threshold, it is determined to heat the passenger compartment in the vehicle thermal management system. End.

[0073] Step S310: When the temperature control request is a dehumidification request, the ambient temperature is greater than the second ambient temperature threshold, and the passenger compartment temperature is greater than the third passenger compartment temperature threshold, it is determined to dehumidify the passenger compartment in the vehicle thermal management system. End.

[0074] In this embodiment, the vehicle thermal management system receives a cooling request sent by the passenger compartment, and the ambient temperature and the passenger compartment temperature are obtained at this time. When the ambient temperature is greater than the first ambient temperature threshold and the passenger compartment temperature is greater than the first passenger compartment temperature threshold, it is determined to cool the passenger compartment. Exemplarily, the first ambient temperature threshold is 30℃, and the first passenger compartment temperature threshold is 25℃.

[0075] In this embodiment, the vehicle thermal management system receives a heating request sent by the passenger compartment, and the ambient temperature and the passenger compartment temperature are obtained at this time. When the ambient temperature is less than the second ambient temperature threshold and the passenger compartment temperature is less than the second passenger compartment temperature threshold, it is determined to heat the passenger compartment. Exemplarily, the second ambient temperature threshold is 0℃, and the second passenger compartment temperature threshold is 10℃.

[0076] In this embodiment, the vehicle thermal management system receives a dehumidification request sent by the passenger compartment, and the ambient temperature and the passenger compartment temperature are obtained at this time. When the ambient temperature is greater than the second ambient temperature threshold and the passenger compartment temperature is greater than the third passenger compartment temperature threshold, it is determined to dehumidify the passenger compartment. Exemplarily, the second ambient temperature threshold is 0℃, and the third passenger compartment temperature threshold is 0℃.

[0077] In this embodiment, when receiving a temperature control request, the temperature information associated with the identifier of the sending end is obtained to determine whether to control the temperature of the passenger compartment, the battery and / or the electric drive, which provides a prerequisite for subsequent acquisition of a matched temperature control mode to provide corresponding temperature control processing, so that the vehicle thermal management system can run in a temperature control mode suitable for the current environment and driving state.

[0078] On the basis of the above Figure 2 to 3 On the basis of the above

[0079] When the current ambient temperature is greater than the first ambient temperature threshold, the electric drive circuit cooling liquid temperature is greater than the first electric drive cooling liquid temperature threshold, and the battery cooling liquid temperature is greater than the first battery cooling liquid temperature threshold, the matched temperature control mode is determined to be the electric drive cooling mode, and the corresponding temperature control processing is performed in the electric drive cooling mode. Exemplarily, the first ambient temperature threshold is 30℃, the first electric drive cooling liquid temperature threshold is 60℃, and the first battery cooling liquid temperature threshold is 30℃.

[0080] Specifically, the third passage of the four-way valve on the cooling liquid circuit is triggered to be conducted, the fourth passage of the four-way valve on the cooling liquid circuit is triggered to be conducted, the first passage of the second three-way water valve is triggered to be conducted, the first passage of the third three-way water valve is triggered to be conducted, and the second passage of the first three-way water valve is triggered to be conducted; the radiator on the cooling liquid circuit is used to cool and recycle the cooling liquid passing through the electric drive module, so as to realize the refrigeration of the electric drive through the cooling liquid circuit.

[0081] When the current environment temperature is greater than the first environment temperature threshold, the battery cooling liquid temperature is greater than the first battery cooling liquid temperature threshold, and the electric drive circuit cooling liquid temperature is less than the second electric drive cooling liquid temperature threshold, the matched temperature control mode is obtained as the second battery refrigeration mode, and the corresponding temperature control processing is performed in the second battery refrigeration mode. Exemplarily, the first environment temperature threshold is 30℃, the first battery cooling liquid temperature threshold is 30℃, and the second electric drive cooling liquid temperature threshold is 32℃.

[0082] Specifically, the first passage of the four-way valve on the cooling liquid circuit is triggered to be conducted, the second passage of the four-way valve on the cooling liquid circuit is triggered to be conducted, the first passage of the second three-way water valve is triggered to be conducted, the first passage of the third three-way water valve is triggered to be conducted, and the second passage of the first three-way water valve is triggered to be conducted; the radiator on the cooling liquid circuit is used to cool the cooling liquid passing through the electric drive module, so that the cooled cooling liquid refrigerates the battery on the battery cooling circuit.

[0083] On the basis of the above Figure 2 to 3 On the basis of the above

[0084] When the current environment temperature is greater than the first environment temperature threshold, the battery temperature is greater than the first battery temperature threshold, the electric drive module temperature is less than the electric drive temperature threshold, and the electric drive circuit cooling liquid temperature is less than the first electric drive cooling liquid temperature threshold and greater than the second electric drive temperature threshold, the matched temperature control mode is obtained as the first battery refrigeration mode, and the corresponding temperature control processing is performed in the first battery refrigeration mode. Exemplarily, the first environment temperature threshold is 30℃, the first battery temperature threshold is 38℃, the electric drive temperature threshold is 100℃, the first electric drive cooling liquid temperature threshold is 60℃, and the second electric drive cooling liquid temperature threshold is 32℃.

[0085] Specifically, the first channel and the second channel of the four-way valve on the cooling liquid circuit are triggered to be conducted, the first channel of the second three-way water valve is triggered to be conducted, the first channel of the third three-way water valve is triggered to be conducted, and the first channel of the first three-way water valve is triggered to be conducted; the compressor exhaust is cooled by the cooling liquid in the water-cooled air cooler on the cooling liquid circuit, and the cooling liquid passing through the water-cooled air cooler is cooled by the radiator, so that the cooled cooling liquid cools the battery on the battery cooling circuit; the first stop valve, the fourth stop valve and the sixth stop valve on the refrigerant circuit are triggered to be conducted, the second stop valve, the third stop valve and the fifth stop valve are closed, the evaporator inlet electronic expansion valve is closed, and the battery cooler inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the first battery cooling mode, so as to cool the battery by using the water-cooled air cooler, the radiator and the battery cooler. At the same time, the excess cooling in the vehicle thermal management system is also stored.

[0086] When the current environment temperature is greater than the first environment temperature threshold, the battery temperature is greater than the first battery temperature threshold, the electric drive module temperature is less than the electric drive temperature threshold, and the electric drive circuit cooling liquid temperature is less than the second electric drive cooling liquid temperature threshold, the matched temperature control mode is obtained as the second battery cooling mode, and the corresponding temperature control processing is performed in the second battery cooling mode. Exemplarily, the first environment temperature threshold is 30°C, the first battery temperature threshold is 38°C, the electric drive temperature threshold is 100°C, and the second electric drive cooling liquid temperature threshold is 32°C.

[0087] Specifically, the first channel and the second channel of the four-way valve on the cooling liquid circuit are triggered to be conducted, the third channel of the second three-way water valve is triggered to be conducted, the first channel of the third three-way water valve is triggered to be conducted, and the first channel of the first three-way water valve is triggered to be conducted; the cooling liquid in the cooling liquid circuit is divided into a first part of cooling liquid and a second part of cooling liquid by the second three-way water valve; the first part of cooling liquid in the water-cooled air cooler on the cooling liquid circuit is used to cool the compressor exhaust, and the first part of cooling liquid passing through the water-cooled air cooler is cooled by the radiator, so that the cooled first part of cooling liquid is used to cool the battery; the second part of cooling liquid is used to cool the battery after passing through the third channel of the second three-way water valve; the first stop valve, the fourth stop valve and the sixth stop valve on the refrigerant circuit are triggered to be conducted, the second stop valve, the third stop valve and the fifth stop valve are closed, the evaporator inlet electronic expansion valve is closed, and the battery cooler inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the second battery cooling mode, so as to divide the cooling liquid into two parts, one part of which cools the compressor exhaust, and the other part of which directly cools the battery, so as to fully cool the battery and avoid the part of the cooling liquid cooling the compressor exhaust from affecting the cooling effect of the battery.

[0088] When the current ambient temperature is greater than the first ambient temperature threshold, the battery temperature is greater than the first battery temperature threshold, the electric drive module temperature is less than the electric drive temperature threshold, and the electric drive circuit cooling liquid temperature is less than the first electric drive cooling liquid temperature threshold, a matched temperature control mode is obtained as the third battery refrigeration mode, and corresponding temperature control processing is performed in the third battery refrigeration mode. Exemplarily, the first ambient temperature threshold is 30°C, the first battery temperature threshold is 38°C, the electric drive temperature threshold is 100°C, and the first electric drive cooling liquid temperature threshold is 60°C.

[0089] Specifically, the third channel and the fourth channel of the four-way valve on the cooling liquid circuit are triggered to be conducted, the first channel of the second three-way water valve, the first channel of the third three-way water valve, and the first channel of the first three-way water valve are triggered to be conducted; the cooling liquid in the water-cooled air cooler on the cooling liquid circuit is used to cool the compressor exhaust, and the cooling liquid cooled by the water-cooled air cooler is cooled by the radiator and then recycled; the first stop valve, the fourth stop valve, and the sixth stop valve on the refrigerant circuit are triggered to be conducted, the second stop valve, the third stop valve, and the fifth stop valve are closed, the evaporator inlet electronic expansion valve is closed, and the battery cooler inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the third battery refrigeration mode. The cooling liquid in the cooling liquid circuit cools the compressor exhaust by using the water-cooled air cooler and the radiator. The battery cooler stores the excess heat in the vehicle thermal management system, and cools the battery by using the stored cold energy through the battery cooling circuit.

[0090] When the current ambient temperature is greater than the first ambient temperature threshold, the battery temperature is greater than the third battery temperature threshold and less than the fourth battery temperature threshold, the electric drive module temperature is less than the electric drive temperature threshold, and the electric drive circuit cooling liquid temperature is less than the second electric drive cooling liquid temperature threshold, a matched temperature control mode is obtained as the fourth battery refrigeration mode, and corresponding temperature control processing is performed in the fourth battery refrigeration mode. Exemplarily, the first ambient temperature threshold is 30°C, the third battery temperature threshold is 32°C, the fourth battery temperature threshold is 35°C, the electric drive temperature threshold is 100°C, and the second electric drive cooling liquid temperature threshold is 32°C.

[0091] Specifically, the first channel and the second channel of the four-way valve on the cooling liquid circuit are triggered to be conducted, the first channel of the second three-way water valve, the first channel of the third three-way water valve, and the first channel of the first three-way water valve are triggered to be conducted; the cooling liquid passing through the radiator is cooled by the cooling fan to cool the battery on the battery cooling circuit.

[0092] In the above Figure 2 to 3On the basis of the illustrated embodiment, when it is determined to heat the battery in the vehicle thermal management system, the current ambient temperature, the battery temperature, the passenger cabin temperature, and the electric drive loop coolant temperature are obtained.

[0093] When the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, the electric drive loop coolant temperature is greater than the third electric drive coolant temperature threshold, and the passenger cabin temperature is greater than the fourth passenger cabin temperature threshold, it is obtained that the matched temperature control mode is the first battery heating mode, and corresponding temperature control processing is performed in the first battery heating mode. Exemplarily, the second ambient temperature threshold is 0℃, the fifth battery temperature threshold is 20℃, the third electric drive coolant temperature threshold is 30℃, and the fourth passenger cabin temperature threshold is 28℃.

[0094] Specifically, the first channel conduction and the second channel conduction of the four-way valve on the coolant loop, the second channel conduction of the first three-way water valve, and the second channel conduction of the second three-way water valve are triggered; the electric drive waste heat generated by the electric drive module on the coolant loop is used to heat the coolant, so that the heated coolant heats the battery on the battery cooling loop; in this mode, the air blower does not work.

[0095] When the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, and the electric drive loop coolant temperature is less than the third electric drive coolant temperature threshold, it is obtained that the matched temperature control mode is the second battery heating mode, and corresponding temperature control processing is performed in the second battery heating mode. Exemplarily, the second ambient temperature threshold is 0℃, the fifth battery temperature threshold is 20℃, and the third electric drive coolant temperature threshold is 30℃.

[0096] Specifically, the second stop valve, the third stop valve, and the fifth stop valve on the refrigerant loop are triggered to be conductive, the first stop valve, the fourth stop valve, and the sixth stop valve are closed, the evaporator inlet electronic expansion valve is closed, and the battery cooler inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are conductive, so that the battery cooler stores heat in the refrigerant loop; the third channel conduction and the fourth channel conduction of the four-way valve on the coolant loop are triggered to be conductive, so that the battery cooler heats the battery through the battery cooling loop; in this mode, the air blower does not work.

[0097] When the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, and the electric drive loop coolant temperature is greater than the first electric drive coolant temperature threshold, it is obtained that the matched temperature control mode is the third battery heating mode, and corresponding temperature control processing is performed in the third battery heating mode. Exemplarily, the second ambient temperature threshold is 0℃, the fifth battery temperature threshold is 20℃, and the first electric drive coolant temperature threshold is 60℃.

[0098] Specifically, the third passage and the fourth passage of the four-way valve on the cooling liquid circuit are triggered to be conducted, the second passage of the first three-way water valve is triggered to be conducted, the first passage of the second three-way water valve is triggered to be conducted, and the second passage of the third three-way water valve is triggered to be conducted; the waste heat generated by the electric drive module on the cooling liquid circuit is used to heat the cooling liquid, so that the heated cooling liquid is recycled after heating the compressor suction gas in the water-cooled air cooler on the cooling liquid circuit; the second stop valve, the third stop valve and the fifth stop valve on the refrigerant circuit are triggered to be conducted, the first stop valve, the fourth stop valve and the sixth stop valve are closed, the evaporator inlet electronic expansion valve is closed, and the battery cooler inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are conducted, so that the battery cooler stores the heat in the refrigerant circuit and heats the battery through the battery cooling circuit; in this mode, the air blower does not work.

[0099] When the current environment temperature is less than the second environment temperature threshold, the battery temperature is less than the fifth battery temperature threshold, the electric drive circuit cooling liquid temperature is greater than the third electric drive cooling liquid temperature threshold, and the passenger cabin temperature is less than the fourth passenger cabin temperature threshold, the matched temperature control mode is obtained as the fourth battery heating mode, and the corresponding temperature control processing is performed in the fourth battery heating mode. Exemplarily, the second environment temperature threshold is 0℃, the fifth battery temperature threshold is 20℃, the third electric drive cooling liquid temperature threshold is 30℃, and the fourth passenger cabin temperature threshold is 28℃.

[0100] Specifically, the first passage and the second passage of the four-way valve on the cooling liquid circuit are triggered to be conducted, the second passage of the first three-way water valve is triggered to be conducted, and the second passage of the second three-way water valve is triggered to be conducted; the waste heat generated by the electric drive module on the cooling liquid circuit is used to heat the cooling liquid, so that the heated cooling liquid heats the battery on the battery cooling circuit; the second stop valve, the third stop valve and the fifth stop valve on the refrigerant circuit are triggered to be conducted, the first stop valve, the fourth stop valve and the sixth stop valve are closed, the evaporator inlet electronic expansion valve is closed, and the battery cooler inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are conducted, so that the battery cooler stores the heat in the refrigerant circuit and heats the battery through the battery cooling circuit; in this mode, the air blower does not work.

[0101] On the basis of the above Figure 2 to 3 On the basis of the above

[0102] When the current ambient temperature is greater than the first ambient temperature threshold and the battery coolant temperature is greater than the first battery coolant temperature threshold, the matched temperature control mode is obtained as the first passenger cabin refrigeration mode, and corresponding temperature control processing is performed in the first passenger cabin refrigeration mode. Exemplarily, the first ambient temperature threshold is 30℃, and the first battery coolant temperature threshold is 30℃.

[0103] Specifically, the first, fourth and sixth stop valves on the refrigerant circuit are triggered to be turned on, the second, third and fifth stop valves are turned off, the battery cooler inlet electronic expansion valve is turned off, and the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the first passenger cabin refrigeration mode. Through the refrigerant circuit, refrigeration of the passenger cabin is achieved.

[0104] When the current ambient temperature is greater than the first ambient temperature threshold and the battery coolant temperature is less than the first battery coolant temperature threshold, the matched temperature control mode is obtained as the second passenger cabin refrigeration mode, and corresponding temperature control processing is performed in the second passenger cabin refrigeration mode. Exemplarily, the first ambient temperature threshold is 30℃, and the first battery coolant temperature threshold is 30℃.

[0105] Specifically, the third and fourth channels of the four-way valve on the coolant circuit are triggered to be turned on, and the battery in the battery cooling circuit is refrigerated by the coolant in the battery cooling circuit; the first, fourth and sixth stop valves on the refrigerant circuit are triggered to be turned on, the second, third and fifth stop valves are turned off, and the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the second passenger cabin refrigeration mode. The refrigerant circuit simultaneously refrigerates the passenger cabin and the battery cooler, and the battery cooler stores the excess cold in the vehicle thermal management system.

[0106] When the current ambient temperature is greater than the first ambient temperature threshold, the battery coolant temperature is greater than the first battery coolant temperature threshold, and the electric drive circuit coolant temperature is less than the first electric drive coolant temperature threshold and greater than the second electric drive coolant temperature threshold, the matched temperature control mode is obtained as the third passenger cabin refrigeration mode, and corresponding temperature control processing is performed in the third passenger cabin refrigeration mode. Exemplarily, the first ambient temperature threshold is 30℃, the first battery coolant temperature threshold is 30℃, the first electric drive coolant temperature threshold is 60℃, and the second electric drive coolant temperature threshold is 32℃.

[0107] Specifically, the third passage and the fourth passage of the four-way valve on the cooling liquid circuit are triggered to be conducted, the first passage of the second three-way water valve is triggered to be conducted, the first passage of the third three-way water valve is triggered to be conducted, and the first passage of the first three-way water valve is triggered to be conducted; the cooling liquid in the water-cooled air cooler on the cooling liquid circuit is used to cool the compressor exhaust, and the radiator is used to cool the cooling liquid passing through the water-cooled air cooler and then recycle; the first stop valve, the fourth stop valve and the sixth stop valve on the refrigerant circuit are triggered to be conducted, the second stop valve, the third stop valve and the fifth stop valve are closed, the battery cooler inlet electronic expansion valve is closed, and the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the third passenger cabin refrigeration mode. The refrigerant circuit is used for passenger cabin refrigeration, and the cooling liquid in the cooling liquid circuit is used to cool the compressor exhaust by using the water-cooled air cooler and the radiator.

[0108] When the current environment temperature is greater than the first environment temperature threshold, the battery cooling liquid temperature is greater than the first battery cooling liquid temperature threshold, and the electric drive circuit cooling liquid temperature is less than the second electric drive cooling liquid temperature threshold, the matched temperature control mode is obtained as the fourth passenger cabin refrigeration mode, and the corresponding temperature control processing is performed in the fourth passenger cabin refrigeration mode. Exemplarily, the first environment temperature threshold is 30℃, the first battery cooling liquid temperature threshold is 30℃, and the second electric drive cooling liquid temperature threshold is 32℃.

[0109] The third passage and the fourth passage of the four-way valve on the cooling liquid circuit are triggered to be conducted, the third passage of the second three-way water valve is triggered to be conducted, the first passage of the third three-way water valve is triggered to be conducted, and the first passage of the first three-way water valve is triggered to be conducted; the cooling liquid in the cooling liquid circuit is divided into a first part of cooling liquid and a second part of cooling liquid by the second three-way water valve; the first part of cooling liquid in the water-cooled air cooler on the cooling liquid circuit is used to cool the compressor exhaust, and the radiator is used to cool the first part of cooling liquid passing through the water-cooled air cooler to recycle the cooled first part of cooling liquid; the second part of cooling liquid is triggered to recycle after passing through the third passage of the second three-way water valve; the first stop valve, the fourth stop valve and the sixth stop valve on the refrigerant circuit are triggered to be conducted, the second stop valve, the third stop valve and the fifth stop valve are closed, the battery cooler inlet electronic expansion valve is closed, and the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the fourth passenger cabin refrigeration mode.

[0110] On the basis of the above Figure 2 to 3 On the basis of the above

[0111] When the current ambient temperature is less than a second ambient temperature threshold, the battery temperature is greater than a sixth battery temperature threshold, and the electric drive loop coolant temperature is less than a third electric drive coolant temperature threshold, a matched temperature control mode is obtained as a first passenger cabin heating mode, and corresponding temperature control processing is performed in the first passenger cabin heating mode. The second ambient temperature threshold is 0°C, the sixth battery temperature threshold is 5°C, and the third electric drive coolant temperature threshold is 30°C.

[0112] Specifically, the third channel and the fourth channel of the four-way valve on the coolant loop are triggered to be conducted, respectively; the second stop valve and the fourth stop valve on the refrigerant loop are triggered to be conducted, and the first stop valve, the third stop valve, the fifth stop valve, and the sixth stop valve are closed, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are closed, and the battery cooler inlet electronic expansion valve is conducted, so that the battery cooler stores heat in the refrigerant loop and heats the passenger cabin.

[0113] When the current ambient temperature is less than a fourth ambient temperature threshold, the battery temperature is greater than a sixth battery temperature threshold, and the electric drive loop coolant temperature is less than a third electric drive coolant temperature threshold, a matched temperature control mode is obtained as a second passenger cabin heating mode, and corresponding temperature control processing is performed in the second passenger cabin heating mode. Exemplarily, the fourth ambient temperature threshold is -15°C, the sixth battery temperature threshold is 5°C, and the third electric drive coolant temperature threshold is 30°C.

[0114] Specifically, the third channel and the fourth channel of the four-way valve on the coolant loop are triggered to be conducted, respectively; the second stop valve, the third stop valve, and the fifth stop valve on the refrigerant loop are triggered to be conducted, and the first stop valve, the fourth stop valve, and the sixth stop valve are closed, the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve, and the external air cooler outlet electronic expansion valve are conducted, and the air blower is turned on, so that the refrigerant loop is used to heat the passenger cabin; the battery cooler stores heat in the refrigerant loop and heats the passenger cabin.

[0115] When the current ambient temperature is less than a fourth ambient temperature threshold, the battery temperature is greater than a sixth battery temperature threshold, and the electric drive loop coolant temperature is greater than a first electric drive coolant temperature threshold, a matched temperature control mode is obtained as a third passenger cabin heating mode, and corresponding temperature control processing is performed in the third passenger cabin heating mode. Exemplarily, the fourth ambient temperature threshold is -15°C, the sixth battery temperature threshold is 5°C, and the first electric drive coolant temperature threshold is 60°C.

[0116] Specifically, the third passage and the fourth passage of the four-way valve on the cooling liquid circuit are triggered to be conducted, the second passage of the first three-way water valve is triggered to be conducted, the first passage of the second three-way water valve is triggered to be conducted, and the second passage of the third three-way water valve is triggered to be conducted; the electric drive waste heat generated by the electric drive module on the cooling liquid circuit is used to heat the cooling liquid, so that the heated cooling liquid is recycled after heating the compressor suction in the air cooler on the cooling liquid circuit; the second stop valve, the third stop valve and the fifth stop valve on the refrigerant circuit are triggered to be conducted, the first stop valve, the fourth stop valve and the sixth stop valve are closed, the battery cooler inlet electronic expansion valve is closed, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are conducted, and the air blower is turned on, so as to use the refrigerant circuit to heat the passenger compartment.

[0117] On the basis of the above Figure 2 to 3 On the basis of the above

[0118] When the current passenger compartment temperature control request is a dehumidification request, the current environment temperature is greater than the second environment temperature threshold, and the current passenger compartment temperature is greater than the third passenger compartment temperature threshold, the matched temperature mode is obtained as the passenger compartment dehumidification mode, and the corresponding temperature control processing is performed in the passenger compartment dehumidification mode. Illustratively, the second environment temperature threshold is 0℃, and the third passenger compartment temperature threshold is 0℃.

[0119] Specifically, the second stop valve and the fourth stop valve on the refrigerant circuit are triggered to be conducted, the first stop valve, the third stop valve, the fifth stop valve and the sixth stop valve are closed, the evaporator inlet electronic expansion valve is conducted, and the battery cooler inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are closed, so that the internal air cooler is connected in parallel with the evaporator, to heat the passenger compartment by the internal air cooler and cool the passenger compartment by the evaporator, thereby achieving dehumidification of the passenger compartment. Illustratively, the opening degree of the evaporator inlet electronic expansion valve can be 20%.

[0120] On the basis of the above Figure 2 to 3 On the basis of the above

[0121] When the current environment temperature is greater than the first environment temperature threshold, and the battery temperature is less than the first battery temperature threshold, the matched temperature control mode is obtained as the first passenger compartment mixed refrigeration mode, and the corresponding temperature control processing is performed in the first passenger compartment mixed refrigeration mode. Illustratively, the first environment temperature threshold is 30℃, and the first battery temperature threshold is 38℃.

[0122] Specifically, the first shutoff valve, the fourth shutoff valve and the sixth shutoff valve on the refrigerant circuit are triggered to be turned on, the second shutoff valve, the third shutoff valve and the fifth shutoff valve are turned off, and the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the first passenger cabin hybrid refrigeration mode; the third channel and the fourth channel of the four-way valve on the cooling liquid circuit are triggered to be turned on, and the cooling liquid in the battery cooling circuit is cooled by the battery cooler, so that the cooled cooling liquid cools the battery on the battery cooling circuit.

[0123] When the current environment temperature is greater than the third environment temperature threshold, the battery temperature is greater than the first battery temperature threshold, and the electric drive circuit cooling liquid temperature is less than the first electric drive cooling liquid temperature threshold and greater than the second electric drive cooling liquid temperature threshold, the matched temperature control mode is obtained as the second passenger cabin hybrid refrigeration mode, and corresponding temperature control processing is performed in the second passenger cabin hybrid refrigeration mode. Exemplarily, the third environment temperature threshold is 40℃, the first battery temperature threshold is 38℃, the first electric drive cooling liquid temperature threshold is 60℃, and the second electric drive cooling liquid temperature threshold is 32℃.

[0124] Specifically, the third channel and the fourth channel of the four-way valve on the cooling liquid circuit are triggered to be turned on, the first channel of the second three-way water valve is turned on, the first channel of the third three-way water valve is turned on, and the first channel of the first three-way water valve is turned on; the cooling liquid in the water-cooled air cooler on the cooling liquid circuit is used to cool the compressor exhaust, and the cooling liquid cooled by the water-cooled air cooler is recirculated after being cooled by the radiator; the first shutoff valve, the fourth shutoff valve and the sixth shutoff valve on the refrigerant circuit are triggered to be turned on, the second shutoff valve, the third shutoff valve and the fifth shutoff valve are turned off, and the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the second passenger cabin hybrid refrigeration mode.

[0125] When the current environment temperature is greater than the third environment temperature threshold, the battery temperature is greater than the first battery temperature threshold, and the electric drive circuit cooling liquid temperature is less than the second electric drive cooling liquid temperature threshold, the matched temperature control mode is obtained as the third passenger cabin hybrid refrigeration mode, and corresponding temperature control processing is performed in the third passenger cabin hybrid refrigeration mode. Exemplarily, the third environment temperature threshold is 40℃, the first battery temperature threshold is 38℃, and the second electric drive cooling liquid temperature threshold is 32℃.

[0126] Specifically, the first passage of the four-way valve on the cooling liquid circuit is triggered to be conducted, the second passage of the four-way valve is triggered to be conducted, the third passage of the second three-way water valve is triggered to be conducted, the first passage of the third three-way water valve is triggered to be conducted, and the first passage of the first three-way water valve is triggered to be conducted; the cooling liquid in the cooling liquid circuit is divided into a first part of cooling liquid and a second part of cooling liquid by the second three-way water valve; the first part of cooling liquid in the water-cooled air cooler on the cooling liquid circuit is used to cool the compressor exhaust, and the first part of cooling liquid is cooled by the radiator to be used for battery cooling; the second part of cooling liquid is triggered to cool the battery after passing through the third passage of the second three-way water valve; the first stop valve, the fourth stop valve and the sixth stop valve on the refrigerant circuit are triggered to be conducted, the second stop valve, the third stop valve and the fifth stop valve are closed, and the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the third passenger cabin mixed refrigeration mode.

[0127] On the basis of the above Figure 2 to 3 On the basis of the above

[0128] When the current environment temperature is greater than the first environment temperature threshold, the battery temperature is greater than the first battery temperature threshold, and the electric drive circuit cooling liquid temperature is greater than the first electric drive cooling liquid temperature threshold, the matched temperature control mode is determined to be the second electric drive mixed refrigeration mode, and the corresponding temperature control processing is performed in the second electric drive mixed refrigeration mode. Exemplarily, the first environment temperature threshold is 30°C, the first battery temperature threshold is 38°C, and the first electric drive cooling liquid temperature threshold is 60°C.

[0129] Specifically, the third passage of the four-way valve on the cooling liquid circuit is triggered to be conducted, the fourth passage of the four-way valve is triggered to be conducted, the first passage of the second three-way water valve is triggered to be conducted, the first passage of the third three-way water valve is triggered to be conducted, and the second passage of the first three-way water valve is triggered to be conducted; the cooling liquid in the water-cooled air cooler on the cooling liquid circuit is used to cool the compressor exhaust, and the electric drive module and the water-cooled air cooler cooling liquid are cooled by the radiator to be recirculated after cooling; the first stop valve, the fourth stop valve and the sixth stop valve on the refrigerant circuit are triggered to be conducted, the second stop valve, the third stop valve and the fifth stop valve are closed, the evaporator inlet electronic expansion valve is closed, and the battery cooler inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the second electric drive mixed refrigeration mode.

[0130] On the basis of the above Figure 2 to 3On the basis of the embodiment shown, when it is determined to cool the electric drive and the passenger cabin in the vehicle thermal management system, the matched temperature control mode is obtained as the third electric drive mixed cooling mode, and corresponding temperature control processing is performed in the third electric drive mixed cooling mode.

[0131] Specifically, the third channel and the fourth channel of the four-way valve on the cooling liquid circuit are triggered to be conducted, the first channel of the second three-way water valve is triggered to be conducted, the first channel of the third three-way water valve is triggered to be conducted, and the second channel of the first three-way water valve is triggered to be conducted; the cooling liquid in the water-cooled air cooler on the cooling liquid circuit is used to cool the compressor exhaust, and the radiator is used to cool the cooling liquid passing through the electric drive module and the water-cooled air cooler, so that the cooled cooling liquid is recirculated after cooling; the first stop valve, the fourth stop valve and the sixth stop valve on the refrigerant circuit are triggered to be conducted, the second stop valve, the third stop valve and the fifth stop valve are closed, the battery cooler inlet electronic expansion valve is closed, and the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the third electric drive mixed cooling mode.

[0132] On the basis of the embodiment shown above Figure 2 to 3 On the basis of the embodiment shown, when it is determined to cool the electric drive, the passenger cabin and the battery in the vehicle thermal management system, the matched temperature control mode is obtained as the fourth electric drive mixed cooling mode, and corresponding temperature control processing is performed in the fourth electric drive mixed cooling mode.

[0133] Specifically, the third channel and the fourth channel of the four-way valve on the cooling liquid circuit are triggered to be conducted, the first channel of the second three-way water valve is triggered to be conducted, the first channel of the third three-way water valve is triggered to be conducted, and the second channel of the first three-way water valve is triggered to be conducted; the cooling liquid in the water-cooled air cooler on the cooling liquid circuit is used to cool the compressor exhaust, and the radiator is used to cool the cooling liquid passing through the electric drive module and the water-cooled air cooler, so that the cooled cooling liquid is recirculated after cooling; the first stop valve, the fourth stop valve and the sixth stop valve on the refrigerant circuit are triggered to be conducted, the second stop valve, the third stop valve and the fifth stop valve are closed, the evaporator inlet electronic, the battery cooler inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are adjusted according to the opening degree corresponding to the fourth electric drive mixed cooling mode.

[0134] On the basis of the embodiment shown above Figure 2 to 3 On the basis of the embodiment shown, when it is determined to heat the passenger cabin and the battery in the vehicle thermal management system, the current environment temperature and the electric drive circuit cooling liquid temperature are obtained.

[0135] When the current ambient temperature is less than the second ambient temperature threshold and the electric drive loop coolant temperature is less than the third electric drive coolant temperature threshold, a matched temperature control mode is obtained as the first hybrid heating mode, and corresponding temperature control processing is performed in the first hybrid heating mode. Exemplarily, the second ambient temperature threshold is 0℃, and the third electric drive coolant temperature threshold is 30℃.

[0136] Specifically, the second stop valve, the third stop valve and the fifth stop valve on the refrigerant loop are triggered to be turned on, the first stop valve, the fourth stop valve and the sixth stop valve are turned off, the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are turned on, and the air blower is turned on, so as to heat the passenger compartment by using the refrigerant loop; the battery cooler stores heat in the refrigerant loop; the third channel and the fourth channel of the four-way valve on the coolant loop are triggered to be turned on, so that the battery cooler heats the battery through the battery cooling loop.

[0137] When the current ambient temperature is less than the second ambient temperature threshold and the electric drive loop coolant temperature is greater than the first electric drive coolant temperature threshold, a matched temperature control mode is obtained as the second hybrid heating mode, and corresponding temperature control processing is performed in the second hybrid heating mode. Exemplarily, the second ambient temperature threshold is 0℃, and the first electric drive coolant temperature threshold is 60℃.

[0138] Specifically, the third channel and the fourth channel of the four-way valve on the coolant loop are triggered to be turned on, the second channel of the first three-way water valve is turned on, the first channel of the second three-way water valve is turned on, and the second channel of the third three-way water valve is turned on; the electric drive waste heat generated by the electric drive module on the coolant loop is used to heat the coolant, so that the heated coolant heats the compressor suction gas in the water-cooled air cooler on the coolant loop and then recirculates; the second stop valve, the third stop valve and the fifth stop valve on the refrigerant loop are triggered to be turned on, the first stop valve, the fourth stop valve and the sixth stop valve are turned off, the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are turned on, and the air blower is turned on, so as to heat the passenger compartment by using the refrigerant loop; the battery cooler stores heat in the refrigerant loop, and heats the battery through the battery cooling loop.

[0139] When the current ambient temperature is less than the second ambient temperature threshold and the electric drive loop coolant temperature is greater than the third electric drive coolant temperature threshold and less than the first electric drive coolant temperature threshold, a matched temperature control mode is obtained as the third hybrid heating mode, and corresponding temperature control processing is performed in the third hybrid heating mode. Exemplarily, the second ambient temperature threshold is 0℃, the first electric drive coolant temperature threshold is 60℃, and the third electric drive coolant temperature threshold is 30℃.

[0140] Specifically, the first passage of the four-way valve on the cooling liquid circuit is triggered to be conducted, the second passage of the four-way valve on the cooling liquid circuit is triggered to be conducted, the second passage of the first three-way water valve is triggered to be conducted, and the second passage of the second three-way water valve is triggered to be conducted; the electric drive waste heat generated by the electric drive module on the cooling liquid circuit is used to heat the cooling liquid, so that the heated cooling liquid heats the battery on the battery cooling circuit; the second stop valve, the third stop valve and the fifth stop valve on the refrigerant circuit are triggered to be conducted, the first stop valve, the fourth stop valve and the sixth stop valve are closed, the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are conducted, and the air blower is opened, so that the passenger compartment is heated by the refrigerant circuit.

[0141] The above Figure 2 to 3 Based on the embodiment shown in the above, the temperature control method based on the vehicle thermal management system further comprises: obtaining the current vehicle thermal management state, the current environment temperature and the current battery temperature, and determining whether to enter the heat storage or cold storage mode.

[0142] When the current environment temperature is greater than the first environment temperature threshold, there is no cooling request for the passenger compartment, there is no cooling request for the battery, and the battery temperature is greater than the third battery temperature threshold, it is determined that the vehicle thermal management system enters the cold storage mode.

[0143] Since the cold storage is to store the cold energy in the battery cooling liquid circuit in the vehicle thermal management system through the battery cooler, therefore, according to the current environment information and the current state information of the vehicle, the matched cold storage mode can be one of the first, second, third and fourth battery cooling modes.

[0144] When the current environment temperature is less than the second environment temperature threshold, there is no heating request for the passenger compartment, there is no heating request for the battery, and the battery temperature is less than the fifth battery temperature threshold, it is determined that the vehicle thermal management system enters the heat storage mode.

[0145] Since the heat storage is to store the heat in the battery cooling liquid circuit in the vehicle thermal management system through the battery cooler, therefore, according to the current environment information and the current state information of the vehicle, the matched heat storage mode can be one of the first, second, third and fourth battery heating modes.

[0146] Figure 4 A flowchart of a third embodiment of a temperature control method of a vehicle thermal management system with energy storage provided in the present application is shown in the above. Figure 4As shown: when the electric drive, the battery and the passenger compartment have cooling and / or heating requirements, the corresponding temperature control request is initiated to the vehicle thermal management system, and the vehicle thermal management system obtains the temperature information associated with the identifier of the sending end in the temperature control request. According to the temperature control request and the temperature information associated with the identifier of the sending end, it is determined whether to control the temperature of the battery, the passenger compartment and / or the electric drive module. When it is determined to control the temperature of the battery, the passenger compartment and / or the electric drive module, the matching temperature control mode is obtained, and the corresponding temperature control processing is carried out in the matching temperature control mode.

[0147] Exemplarily, when the electric drive has no cooling request and the electric drive has waste heat, the electric drive waste heat can be recycled, and when the battery has heating requirements, the electric drive waste heat can be used to heat the battery; When the passenger compartment has heating requirements, the electric drive waste heat can be used to heat the passenger compartment. When the electric drive has no cooling request and the electric drive has no waste heat, the vehicle thermal management system enters the electric drive heat balance mode.

[0148] When the battery and the passenger compartment both have heating requirements, the vehicle thermal management system enters the mixed heating mode of the battery and the passenger compartment heating simultaneously. When the battery has neither cooling requirements nor heating requirements, the vehicle thermal management system enters the battery heat balance mode.

[0149] When the passenger compartment has both heating requirements and cooling requirements, the vehicle thermal management system enters the passenger compartment dehumidification mode. When the passenger compartment has neither heating requirements nor cooling requirements, the vehicle thermal management system enters the ventilation mode.

[0150] On the basis of the above Figure 2 to 3 On the basis of the above

[0151] When the battery temperature reaches the battery target request temperature or the vehicle thermal management system receives a request to exit the battery cooling or heating state, the current battery cooling mode or battery heating mode is exited.

[0152] Specifically, the target request temperature in the battery heating mode is -4°C; the target request temperature in the battery cooling mode is 32°C.

[0153] When the electric drive has no cooling request or the electric drive circuit cooling liquid temperature reaches the electric drive target request temperature, the current electric drive cooling mode is exited.

[0154] Specifically, the electric drive target request temperature in the electric drive cooling mode is 100°C; the electric drive circuit cooling liquid target request temperature is 60°C.

[0155] When the passenger compartment temperature reaches the passenger compartment target request temperature or the vehicle thermal management system receives a request to exit the passenger compartment cooling or heating state, the current passenger compartment cooling mode or passenger compartment heating mode is exited.

[0156] Specifically, the target temperature for the crew cabin in cooling mode is 18°C; the target temperature for the crew cabin in heating mode is 28°C.

[0157] When the battery temperature reaches the target required battery temperature and the coolant temperature at the battery cooler outlet reaches the target required coolant temperature, exit the current cold storage mode or heat storage mode.

[0158] Specifically, in thermal storage mode, the target required temperature for the battery is 30°C, and the target required temperature for the battery circuit coolant is 40°C; in cold storage mode, the target required temperature for the battery is 15°C, and the target required temperature for the battery circuit coolant is 5°C.

[0159] Figure 5 This is a flowchart illustrating a fourth embodiment of a temperature control method for an automotive thermal management system with energy storage provided in this application.

[0160] like Figure 5 As shown, after the vehicle's thermal management system is powered on, it performs a status check, which involves self-checking its components, power-on status, and fault conditions. After the status check, the thermal management system performs an initialization reset, which restores each component to its preset initial position before entering standby mode.

[0161] The automotive thermal management system receives a temperature control request and, based on the sender's identifier, obtains the associated temperature information. Then, based on the temperature control request and the associated temperature information, it determines whether temperature control should be applied to the battery, passenger compartment, and / or electric drive module. If temperature control is determined for the battery, passenger compartment, and / or electric drive module, a matching temperature control mode is obtained, and appropriate temperature control processing is performed within that mode.

[0162] After entering the matched temperature control mode, the refrigerant circuit, coolant circuit, and air conditioning are controlled separately. Specifically, the control of the refrigerant circuit includes controlling the compressor speed, controlling the on / off state of each shut-off valve, and controlling the opening degree of each electronic expansion valve, so that each component in the refrigerant circuit performs corresponding actions to operate the matched temperature control mode, and exits the corresponding actions when the temperature control mode is ready to be exited.

[0163] Specifically, the control of the coolant circuit includes the control of the power of the electric drive module, the control of the speed of the electric drive circuit water pump and the speed of the battery circuit water pump, the on / off control of the four channels of the four-way water valve and the on / off and opening degree control of each three-way water valve, so that each component in the coolant circuit performs corresponding actions to run the matching temperature control mode, and exits the corresponding action when the temperature control mode is exited.

[0164] Specifically, the control of the air conditioner includes the control of the rotation speed of the air blower and the control of the opening of the mixed damper, so that each component in the air conditioning system performs corresponding actions to run a matched temperature control mode, and exits the corresponding actions when the exit condition of the temperature control mode is met.

[0165] Figure 6 A structural schematic diagram of an electronic control unit is provided in the present application. As shown in the figure, the electronic control unit 60 includes a processor 61, a memory 62, and a communication interface 63; the memory 62 is configured to store executable instructions of the processor 61; and the processor 61 is configured to execute the technical solutions in any of the preceding method embodiments by executing the executable instructions. Figure 6

[0166] Optionally, the memory 62 can be independent or integrated with the processor 61.

[0167] Optionally, when the memory 62 is independent of the processor 61, the electronic device 60 can further include a bus 64 for connecting the above-mentioned devices.

[0168] The electronic device is configured to execute the technical solutions in any of the preceding method embodiments, and has similar implementation principles and technical effects, which will not be described here again.

[0169] In the present embodiment, a new energy vehicle is also provided, which includes the electronic control unit as shown in the figure and a vehicle thermal management system with energy storage, which will not be described here again. Figure 6

[0170] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.​​

Claims

1. A temperature control method for a thermal management system with energy storage for vehicles, characterized in that, The vehicle thermal management system comprises a cooling liquid circuit and a refrigerant circuit; wherein the method comprises: receiving a temperature control request, and obtaining temperature information associated with the identifier of the sending end according to the identifier of the sending end in the temperature control request; determining whether to control the temperature of the battery, the passenger compartment and / or the electric drive module in the vehicle thermal management system according to the temperature control request and the temperature information associated with the identifier of the sending end; when it is determined to control the temperature of the battery, the passenger compartment and / or the electric drive module in the vehicle thermal management system, obtaining a matched temperature control mode, and performing corresponding temperature control processing under the matched temperature control mode; the obtaining of the matched temperature control mode when it is determined to control the temperature of the battery, the passenger compartment and / or the electric drive module in the vehicle thermal management system comprises: when it is determined to cool the electric drive module in the vehicle thermal management system, obtaining the current environment temperature, the battery cooling liquid temperature and the electric drive circuit cooling liquid temperature; when the current environment temperature is greater than a first environment temperature threshold, the electric drive circuit cooling liquid temperature is greater than a first electric drive cooling liquid temperature threshold, and the battery cooling liquid temperature is greater than a first battery cooling liquid temperature threshold, the matched temperature control mode is determined to be an electric drive cooling mode; when the current environment temperature is greater than a first environment temperature threshold, the electric drive circuit cooling liquid temperature is greater than a first electric drive cooling liquid temperature threshold, and the battery cooling liquid temperature is less than a first battery cooling liquid temperature threshold, the matched temperature control mode is determined to be a first electric drive mixed cooling mode.

2. The method of claim 1, wherein, when the identifier of the sending end is the identifier of the electric drive, the obtaining of the temperature information associated with the identifier of the sending end comprises: obtaining the electric drive module temperature and the electric drive circuit cooling liquid temperature associated with the identifier of the electric drive; the determination of whether to control the temperature of the battery, the passenger compartment and / or the electric drive module in the vehicle thermal management system according to the temperature control request and the temperature information associated with the identifier of the sending end comprises: when the temperature control request is a cooling request, the electric drive module temperature is greater than an electric drive temperature threshold, and the electric drive circuit cooling liquid temperature is greater than a first electric drive cooling liquid temperature threshold, it is determined to cool the electric drive module in the vehicle thermal management system.

3. The method according to claim 1 or 2, characterized in that, when the identifier of the sending end is the identifier of the battery, the obtaining of the temperature information associated with the identifier of the sending end comprises: obtaining the battery temperature associated with the identifier of the battery; the determination of whether to control the temperature of the battery, the passenger compartment and / or the electric drive module in the vehicle thermal management system according to the temperature control request and the temperature information associated with the identifier of the sending end comprises: when the temperature control request is a cooling request and the battery temperature is greater than a first battery temperature threshold, it is determined to cool the battery in the vehicle thermal management system; when the temperature control request is a heating request and the battery temperature is less than a second battery temperature threshold, it is determined to heat the battery in the vehicle thermal management system.

4. The method according to claim 1 or 2, characterized in that, when the identifier of the sending end is the identifier of the passenger compartment, the obtaining of the temperature information associated with the identifier of the sending end comprises: obtaining an ambient temperature and a passenger cabin temperature associated with the identification of the passenger cabin; determining whether to control the temperature of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system according to the temperature control request and the temperature information associated with the identification of the sending end, including: when the temperature control request is a cooling request, the ambient temperature is greater than a first ambient temperature threshold, and the passenger cabin temperature is greater than a first passenger cabin temperature threshold, determining to cool the passenger cabin in the vehicle thermal management system; when the temperature control request is a heating request, the ambient temperature is less than a second ambient temperature threshold, and the passenger cabin temperature is less than a second passenger cabin temperature threshold, determining to heat the passenger cabin in the vehicle thermal management system; when the temperature control request is a dehumidification request, the ambient temperature is greater than a second ambient temperature threshold, and the passenger cabin temperature is greater than a third passenger cabin temperature threshold, determining to dehumidify the passenger cabin in the vehicle thermal management system.

5. The method of claim 3, wherein, when it is determined to control the temperature of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system, obtaining a matched temperature control mode, including: when it is determined to cool the battery in the vehicle thermal management system, obtaining a current ambient temperature, a battery temperature, an electric drive module temperature and an electric drive circuit cooling liquid temperature; when the current ambient temperature is greater than a first ambient temperature threshold, the battery temperature is greater than a first battery temperature threshold, the electric drive module temperature is less than an electric drive temperature threshold, and the electric drive circuit cooling liquid temperature is less than a first electric drive cooling liquid temperature threshold and greater than a second electric drive temperature threshold, then the matched temperature control mode is a first battery cooling mode; when the current ambient temperature is greater than a first ambient temperature threshold, the battery temperature is greater than a first battery temperature threshold, the electric drive module temperature is less than an electric drive temperature threshold, and the electric drive circuit cooling liquid temperature is less than a second electric drive cooling liquid temperature threshold, then the matched temperature control mode is a second battery cooling mode; when the current ambient temperature is greater than a first ambient temperature threshold, the battery temperature is greater than a first battery temperature threshold, the electric drive module temperature is less than an electric drive temperature threshold, and the electric drive circuit cooling liquid temperature is less than a first electric drive cooling liquid temperature threshold, then the matched temperature control mode is a third battery cooling mode; when the current ambient temperature is greater than a first ambient temperature threshold, the battery temperature is greater than a third battery temperature threshold and less than a fourth battery temperature threshold, the electric drive module temperature is less than an electric drive temperature threshold, and the electric drive circuit cooling liquid temperature is less than a second electric drive cooling liquid temperature threshold, then the matched temperature control mode is a fourth battery cooling mode.

6. The method of claim 3, wherein, when it is determined to control the temperature of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system, obtaining a matched temperature control mode, including: when it is determined to heat the battery in the vehicle thermal management system, obtaining a current ambient temperature, a battery temperature, a passenger cabin temperature and an electric drive circuit cooling liquid temperature; when the current ambient temperature is greater than a first ambient temperature threshold, the battery temperature is greater than a first battery temperature threshold, the electric drive module temperature is less than an electric drive temperature threshold, and the electric drive circuit cooling liquid temperature is less than a first electric drive cooling liquid temperature threshold and greater than a second electric drive temperature threshold, then the matched temperature control mode is a first battery cooling mode; when the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, the electric drive loop coolant temperature is greater than the third electric drive coolant temperature threshold, and the passenger cabin temperature is greater than the fourth passenger cabin temperature threshold, the matched temperature control mode is determined to be the first battery heating mode; when the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, and the electric drive loop coolant temperature is less than the third electric drive coolant temperature threshold, the matched temperature control mode is determined to be the second battery heating mode; when the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, and the electric drive loop coolant temperature is greater than the first electric drive coolant temperature threshold, the matched temperature control mode is determined to be the third battery heating mode; when the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is less than the fifth battery temperature threshold, the electric drive loop coolant temperature is greater than the third electric drive coolant temperature threshold, and the passenger cabin temperature is less than the fourth passenger cabin temperature threshold, the matched temperature control mode is determined to be the fourth battery heating mode.

7. The method of claim 4, wherein, The method further includes: when the current ambient temperature is greater than the first ambient temperature threshold, and the battery coolant temperature is greater than the first battery coolant temperature threshold, the matched temperature control mode is determined to be the first passenger cabin cooling mode; when the current ambient temperature is greater than the first ambient temperature threshold, and the battery coolant temperature is less than the first battery coolant temperature threshold, the matched temperature control mode is determined to be the second passenger cabin cooling mode; when the current ambient temperature is greater than the first ambient temperature threshold, the battery coolant temperature is greater than the first battery coolant temperature threshold, and the electric drive loop coolant temperature is less than the first electric drive coolant temperature threshold and greater than the second electric drive coolant temperature threshold, the matched temperature control mode is determined to be the third passenger cabin cooling mode; when the current ambient temperature is greater than the first ambient temperature threshold, the battery coolant temperature is greater than the first battery coolant temperature threshold, and the electric drive loop coolant temperature is less than the second electric drive coolant temperature threshold, the matched temperature control mode is determined to be the fourth passenger cabin cooling mode. The method further includes:

8. The method of claim 4, wherein, when the current ambient temperature is less than the second ambient temperature threshold, the battery temperature is greater than the sixth battery temperature threshold, and the electric drive loop coolant temperature is less than the third electric drive coolant temperature threshold, the matched temperature control mode is determined to be the first passenger cabin heating mode; ​ ​ In a case where the current ambient temperature is less than the fourth ambient temperature threshold, the battery temperature is greater than the sixth battery temperature threshold, and the electric drive loop coolant temperature is less than the third electric drive coolant temperature threshold, the matched temperature control mode is obtained as the second passenger cabin heating mode. In a case where the current ambient temperature is less than the fourth ambient temperature threshold, the battery temperature is greater than the sixth battery temperature threshold, and the electric drive loop coolant temperature is greater than the first electric drive coolant temperature threshold, the matched temperature control mode is obtained as the third passenger cabin heating mode.

9. The method of claim 4, wherein, The obtaining of the matched temperature control mode in the determination of the temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: In the determination of the dehumidification of the passenger cabin in the vehicle thermal management system, the matched temperature mode is obtained as the passenger cabin dehumidification mode.

10. The method of claim 4, wherein, The obtaining of the matched temperature control mode in the determination of the temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: In the determination of the refrigeration of the passenger cabin and the battery in the vehicle thermal management system, the current ambient temperature, the battery temperature and the electric drive loop coolant temperature are obtained; In a case where the current ambient temperature is greater than the first ambient temperature threshold, and the battery temperature is less than the first battery temperature threshold, the matched temperature control mode is obtained as the first passenger cabin mixed refrigeration mode; In a case where the current ambient temperature is greater than the third ambient temperature threshold, the battery temperature is greater than the first battery temperature threshold, and the electric drive loop coolant temperature is less than the first electric drive coolant temperature threshold and greater than the second electric drive coolant temperature threshold, the matched temperature control mode is obtained as the second passenger cabin mixed refrigeration mode; In a case where the current ambient temperature is greater than the third ambient temperature threshold, the battery temperature is greater than the first battery temperature threshold, and the electric drive loop coolant temperature is less than the second electric drive coolant temperature threshold, the matched temperature control mode is obtained as the third passenger cabin mixed refrigeration mode.

11. The method of claim 3, wherein, The obtaining of the matched temperature control mode in the determination of the temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: In the determination of the refrigeration of the electric drive and the battery in the vehicle thermal management system, the current ambient temperature, the battery temperature and the electric drive loop coolant temperature are obtained; In a case where the current ambient temperature is greater than the first ambient temperature threshold, the battery temperature is greater than the first battery temperature threshold, and the electric drive loop coolant temperature is greater than the first electric drive coolant temperature threshold, the matched temperature control mode is obtained as the second electric drive mixed refrigeration mode.

12. The method of claim 4, wherein, The obtaining of the matched temperature control mode in the determination of the temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: In the determination of the refrigeration of the electric drive and the passenger cabin in the vehicle thermal management system, the matched temperature control mode is obtained as the third electric drive mixed refrigeration mode.

13. The method of claim 4, wherein, The obtaining of the matched temperature control mode in the determination of the temperature control of the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system comprises: In the determination of the refrigeration of the electric drive, the passenger cabin and the battery in the vehicle thermal management system, the matched temperature control mode is obtained as the fourth electric drive mixed refrigeration mode.

14. The method of claim 4, wherein, The method further comprises: In determining temperature control on the battery, the passenger cabin and / or the electric drive module in the vehicle thermal management system, a matched temperature control mode is obtained, comprising: In determining heating for the passenger cabin and the battery in the vehicle thermal management system, the current ambient temperature and the electric drive circuit cooling liquid temperature are obtained; When the current ambient temperature is less than the second ambient temperature threshold, and the electric drive circuit cooling liquid temperature is less than the third electric drive cooling liquid temperature threshold, the matched temperature control mode is the first mixed heating mode; When the current ambient temperature is less than the second ambient temperature threshold, and the electric drive circuit cooling liquid temperature is greater than the first electric drive cooling liquid temperature threshold, the matched temperature control mode is the second mixed heating mode; 15. The method of claim 1, wherein, When the current ambient temperature is less than the second ambient temperature threshold, and the electric drive circuit cooling liquid temperature is greater than the third electric drive cooling liquid temperature threshold and less than the first electric drive cooling liquid temperature threshold, the matched temperature control mode is the third mixed heating mode. The method further comprises: Obtain the current vehicle thermal management state, the current ambient temperature and the current battery temperature, and determine whether to enter the heat storage or cold storage mode; When the current ambient temperature is greater than the first ambient temperature threshold, the passenger cabin has no cooling request, the battery has no cooling request, and the battery temperature is greater than the third battery temperature threshold, it is determined that the vehicle thermal management system enters the cold storage mode; 16. The method of claim 1, wherein, When the current ambient temperature is less than the second ambient temperature threshold, the passenger cabin has no heating request, the battery has no heating request, and the battery temperature is less than the fifth battery temperature threshold, it is determined that the vehicle thermal management system enters the heat storage mode. The method further comprises: When the battery temperature reaches the battery target request temperature or the vehicle thermal management system receives a request to exit the battery cooling or heating state, exit the current battery cooling mode or battery heating mode; When the electric drive has no cooling request or the electric drive circuit cooling liquid temperature reaches the electric drive target request temperature, exit the current electric drive cooling mode; When the passenger cabin temperature reaches the passenger cabin target request temperature or the vehicle thermal management system receives a request to exit the passenger cabin cooling or heating state, exit the current passenger cabin cooling mode or passenger cabin heating mode; 17. An electronic control unit, characterized by When the battery temperature reaches the battery target request temperature, and the battery cooler outlet cooling liquid temperature reaches the cooling liquid target request temperature, exit the current cold storage mode or heat storage mode. Comprise: Processor, memory, communication interface; The memory is used to store executable instructions of the processor; 18. A new energy vehicle, characterized in that, Wherein, the processor is configured to execute the executable instructions to perform the temperature control method of the vehicle thermal management system with energy storage in any one of claims 1 to 16. Comprise: The electronic control unit and the vehicle thermal management system with energy storage of claim 17.

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