Thermal management system and vehicle

Abstract

The utility model relates to a heat management system and a vehicle, the heat management system comprises a compressor and a cold and warm box assembly, the compressor is at least used for being connected with a heat exchanger in a vehicle air conditioner, and the cold and warm box assembly comprises a cold and warm box body, a first heat exchange pipeline, a first flow valve and a second flow valve. The first heat exchange pipeline is connected with the compressor to form a cold and warm box heat exchange loop, and the first heat exchange pipeline is provided with a heat exchange section which is used for exchanging heat with the cold and warm box body; the first flow valve and the second flow valve are both arranged on the first heat exchange pipeline, and the heat exchange section is located between the first flow valve and the second flow valve. The heat management system can solve the technical problems that the temperature of an existing vehicle-mounted cooling and heating box is single during heating or cooling, and different heating or cooling requirements of users cannot be met.

Description

Technical Field

[0001] This application relates to the technical field of vehicle thermal management, and particularly to a thermal management system and a vehicle. Background Art

[0002] Some existing vehicles are equipped with a refrigerator to facilitate passengers in storing items that need to be kept at a specific temperature (such as food, medicine, cosmetics, etc.). However, the temperature during heating or cooling of the existing in-vehicle refrigerator is relatively single, unable to meet the different heating or cooling requirements of users, thus making the refrigerator inconvenient to use. Summary of the Utility Model

[0003] An embodiment of this application provides a thermal management system to solve the technical problem that the temperature during heating or cooling of the existing in-vehicle refrigerator is relatively single and cannot meet the different heating or cooling requirements of users.

[0004] To achieve the above object, according to the first aspect of this application, a thermal management system is provided, including a compressor and a refrigerator assembly. The compressor is at least used to connect with a heat exchanger in the vehicle air conditioner. The refrigerator assembly includes a refrigerator body, a first heat exchange pipeline, a first flow valve, and a second flow valve.

[0005] The first heat exchange pipeline is connected to the compressor to form a refrigerator heat exchange loop, and the first heat exchange pipeline has a heat exchange section for heat exchange with the refrigerator body. Both the first flow valve and the second flow valve are arranged on the first heat exchange pipeline, and the heat exchange section is located between the first flow valve and the second flow valve.

[0006] Optionally, in one embodiment, the first heat exchange pipeline is provided with a first pipe orifice and a second pipe orifice. The refrigerator heat exchange loop includes a refrigerator heating loop and a refrigerator cooling loop, and the refrigerator heating loop and the refrigerator cooling loop share the first heat exchange pipeline.

[0007] When the refrigerator body is heating, the refrigerant circulates in the refrigerator heating loop, and the refrigerant flows from the first pipe orifice to the second pipe orifice. When the refrigerator body is cooling, the refrigerant circulates in the refrigerator cooling loop, and the refrigerant flows from the second pipe orifice to the first pipe orifice.

[0008] Optionally, in one embodiment, the first flow valve is a throttle valve with variable orifice diameter and is located between the first pipe orifice and the refrigerator body, and the second flow valve is a two-way electronic expansion valve and is located between the second pipe orifice and the refrigerator body.

[0009] Optionally, in one embodiment, the first heat exchange pipeline is further provided with a first temperature and pressure sensor on a side of the cold and warm box body away from the second flow valve, and / or the first heat exchange pipeline is further provided with a first temperature sensor on a side of the cold and warm box body away from the first flow valve.

[0010] Optionally, in one embodiment, the compressor is provided with an air inlet and an air outlet, and the thermal management system further includes a first connection pipeline, a second connection pipeline, a third connection pipeline, and a fourth connection pipeline respectively provided with a switching valve;

[0011] The first connection pipeline is connected between the air outlet and the first pipe orifice, and the second connection pipeline is connected between the second pipe orifice and the air inlet to form a heating circuit of the cold and warm box;

[0012] The third connection pipeline is connected between the air outlet and the second pipe orifice, and the fourth connection pipeline is connected between the first pipe orifice and the air inlet to form a refrigeration circuit of the cold and warm box.

[0013] Optionally, in one embodiment, the thermal management system further includes a battery pack assembly, and the battery pack assembly includes a heat exchange plate, a second heat exchange pipeline, a third flow valve, and a fourth flow valve;

[0014] The second heat exchange pipeline is connected to the compressor to form a battery pack heat exchange circuit, and the second heat exchange pipeline is used for heat exchange with the heat exchange plate;

[0015] Both the third flow valve and the fourth flow valve are provided on the second heat exchange pipeline, and in the extending direction of the second heat exchange pipeline, the heat exchange plate is located between the third flow valve and the fourth flow valve.

[0016] Optionally, in one embodiment, the second heat exchange pipeline is provided with a third pipe orifice and a fourth pipe orifice, and the first connection pipeline is further connected between the air outlet and the third pipe orifice, and the second connection pipeline is further connected between the fourth pipe orifice and the air inlet to form a battery pack heating circuit;

[0017] The third connection pipeline is further connected between the air outlet and the fourth pipe orifice, and the fourth connection pipeline is further connected between the third pipe orifice and the air inlet to form a battery pack refrigeration circuit.

[0018] Optionally, in one embodiment, an in-vehicle air conditioner condenser and a first expansion valve are further connected to the third connection pipeline, and the first expansion valve is located on a side of the in-vehicle air conditioner condenser away from the compressor.

[0019] Optionally, in one embodiment, the thermal management system further includes a power assembly, the power assembly includes a power heat exchanger, and the power heat exchanger is thermally connected to the third connecting pipeline.

[0020] Optionally, in one embodiment, the third connecting pipeline includes a power heat exchange section and a first one-way section. The power heat exchange section is connected between the first expansion valve and the first one-way section. One end of the first one-way section away from the power heat exchange section is connected to the second pipe orifice and the fourth pipe orifice.

[0021] The second connecting pipeline includes a second one-way section and a reflux section. The second one-way section is connected to the second pipe orifice and the fourth pipe orifice, and the other end is connected to the power heat exchange section. One end of the reflux section is connected to the power heat exchange section, and the other end is connected to the air inlet.

[0022] A first one-way valve is provided on the first one-way section. The first one-way valve allows the refrigerant to flow from the power heat exchange section to the second pipe orifice and the fourth pipe orifice. A second one-way valve is provided on the second one-way section. The second one-way valve allows the refrigerant to flow from the second pipe orifice and the fourth pipe orifice to the power heat exchange section.

[0023] Optionally, in one embodiment, the switch valve is provided on the reflux section, and / or both the second connecting pipeline and the fourth connecting pipeline are further connected to the air inlet through a gas-liquid separator.

[0024] Optionally, in one embodiment, the cold and warm box assembly further includes an accumulator. The accumulator is used to absorb and store cold or heat from the first heat exchange pipeline, and the accumulator is used to release the stored cold or heat to the cold and warm box body.

[0025] Optionally, in one embodiment, the thermal management system further includes an external vehicle air-conditioning condenser and an evaporator. The external vehicle air-conditioning condenser, the evaporator and the compressor are connected to form an air-conditioning heat exchange loop.

[0026] According to a second aspect of the present application, a vehicle is provided. The vehicle includes the thermal management system according to any one of the above embodiments.

[0027] In the thermal management system according to the embodiments of the present application, by providing a first heat exchange pipeline which is used for heat exchange with the main body of the heating and cooling box, a first flow valve and a second flow valve are also provided. In the extending direction of the first heat exchange pipeline, the main body of the heating and cooling box is located between the first flow valve and the second flow valve. Thus, whether the refrigerant flows from the first flow valve to the second flow valve or from the second flow valve to the first flow valve, the flow rate of the refrigerant flowing through the main body of the heating and cooling box can be controlled by the first flow valve or the second flow valve. In this way, the temperature of the main body of the heating and cooling box during heating or cooling can be controlled more precisely, thereby meeting different heating or cooling requirements of users and making the on-vehicle heating and cooling box more convenient to use.

[0028] In addition, by providing the first flow valve and the second flow valve on both sides of the main body of the heating and cooling box, the residence time of the refrigerant between the first flow valve and the second flow valve can be controlled through the combined action of the first flow valve and the second flow valve. This is conducive to the full heat exchange between the refrigerant and the main body of the heating and cooling box, realizing the efficient utilization of the heat or cold of the refrigerant.

[0029] Other features and advantages of the present application will be described in detail in the following specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] In order to more fully understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, where the same reference numerals in the following description represent the same parts.

[0032] Figure 1 is a schematic structural diagram of an embodiment of the thermal management system of the present application;

[0033] Figure 2 is a schematic structural diagram of another embodiment of the thermal management system of the present application;

[0034] Figure 3 is a schematic diagram of the refrigerant flow direction in the first working condition of the thermal management system of the present application;

[0035] Figure 4 is a schematic diagram of the refrigerant flow direction in the second working condition of the thermal management system of the present application;

[0036] Figure 5 is a schematic diagram of the refrigerant flow direction in the third working condition of the thermal management system of the present application;

[0037] Figure 6 It is a schematic diagram of the refrigerant flow direction under Condition 4 of the thermal management system of this application;

[0038] Figure 7 It is a schematic diagram of the refrigerant flow direction under Condition 5 of the thermal management system of this application;

[0039] Figure 8 It is a schematic diagram of the refrigerant flow direction under Condition 6 of the thermal management system of this application;

[0040] Figure 9 It is a schematic diagram of the refrigerant flow direction under Condition 7 of the thermal management system of this application;

[0041] Figure 10 It is a schematic diagram of the refrigerant flow direction under Condition 8 of the thermal management system of this application;

[0042] Figure 11 It is a schematic diagram of the refrigerant flow direction under Condition 9 of the thermal management system of this application;

[0043] Figure 12 It is a schematic diagram of the refrigerant flow direction under Condition 10 of the thermal management system of this application.

[0044] Description of the reference numerals:

[0045] 100, thermal management system;

[0046] 10, compressor; 11, intake port; 12, outlet port; 13, third temperature sensor; 14, pressure sensor;

[0047] 20, cold and warm box assembly; 21, cold and warm box body; 22, first heat exchange pipeline; 221, first pipe orifice; 222, second pipe orifice; 23, first flow valve; 24, second flow valve; 25, first temperature and pressure sensor; 26, first temperature sensor; 27, accumulator;

[0048] 31, first connection pipeline; 32, second connection pipeline; 321, second one-way section; 322, return section; 33, third connection pipeline; 331, power heat exchange section; 332, first one-way section; 34, fourth connection pipeline;

[0049] 40, battery pack assembly; 41, heat exchange plate; 42, second heat exchange pipeline; 421, third pipe orifice; 422, fourth pipe orifice; 43, third flow valve; 44, fourth flow valve; 45, second temperature and pressure sensor; 46, second temperature sensor;

[0050] 51, in-vehicle air conditioner condenser; 52, first expansion valve; 53, out-of-vehicle air conditioner condenser; 54, evaporator; 55, second expansion valve; 56, liquid storage tank; 57, third temperature and pressure sensor; 58, PTC heater;

[0051] 60, Power assembly; 61, Power train; 62, Water pump; 63, Water tank; 64, Four-way valve; 65, Radiator; 66, Cooling fan; 67, Power heat exchanger;

[0052] 71, First switching valve; 72, Second switching valve; 73, Third switching valve; 74, Fourth switching valve; 75, First check valve; 76, Second check valve; 77, Third check valve;

[0053] 80, Gas-liquid separator. Detailed implementation

[0054] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0055] To solve the technical problem that the temperature of the existing in-vehicle cooling and heating box is relatively single during heating or cooling and cannot meet the different heating or cooling needs of users, according to the first aspect of the present application, as Figure 1 shown, a thermal management system 100 is provided, and the thermal management system 100 includes a compressor 10 and a cooling and heating box assembly 20.

[0056] Among them, the compressor 10 is at least used to connect with the heat exchanger in the vehicle air conditioner. Specifically, in this embodiment, the thermal management system 100 in the present application is applied to a vehicle. The vehicle includes an occupant compartment and an air conditioner for cooling or heating the occupant compartment. The compressor 10 in the present application is connected to the heat exchanger in the air conditioner (which can be a condenser or a heat exchanger). Further, the compressor 10 can provide refrigerant for the heat exchanger in the air conditioner. When the refrigerant flows through the heat exchanger in the vehicle air conditioner, the refrigerant exchanges heat with the air flow from the air conditioner heat exchanger. That is, the air flow from the air conditioner heat exchanger is cooled or heated and then flows into the occupant compartment, thereby cooling or heating the occupant compartment.

[0057] Regarding the connection method between the compressor 10 and the heat exchanger in the air conditioner, in one embodiment, as Figure 1As shown in the figure, the air-conditioning heat exchanger includes an in-vehicle air-conditioning condenser 51, an external air-conditioning condenser 53, and an evaporator 54. Among them, the in-vehicle air-conditioning condenser 51 is connected to the compressor 10 to form a heating circuit for the passenger compartment. When heating the passenger compartment, the refrigerant is compressed by the compressor 10 and flows out from the air outlet 12, then successively flows through the in-vehicle air-conditioning condenser 51, the first expansion valve 52, the power heat exchanger 67, the second connecting pipe 32, the gas-liquid separator 80, and finally flows back to the compressor 10 through the air inlet 11 of the compressor 10. When the refrigerant flows through the in-vehicle air-conditioning condenser 51, a blower can blow air to the in-vehicle air-conditioning condenser 51, and the air flow absorbs heat at the in-vehicle air-conditioning condenser 51 and flows into the passenger compartment, thereby heating the passenger compartment.

[0058] The external air-conditioning condenser 53, the evaporator 54, and the compressor 10 are connected to form a refrigeration circuit for the passenger compartment. When refrigerating the passenger compartment, the refrigerant is compressed by the compressor 10 and flows out from the air outlet 12, then successively flows through the external air-conditioning condenser 53, the liquid storage tank 56, the second expansion valve 55, the evaporator 54, the gas-liquid separator 80, and finally flows back to the compressor 10 through the air inlet 11 of the compressor 10. When the refrigerant flows through the evaporator 54, a blower can blow air to the in-vehicle air-conditioning condenser 51, and the air flow is absorbed by heat at the in-vehicle air-conditioning condenser 51 and flows into the passenger compartment, thereby refrigerating the passenger compartment.

[0059] As Figure 1 shown, in this embodiment, the cool-warm box assembly 20 includes a cool-warm box body 21, a first heat exchange pipe 22, a first flow valve 23, and a second flow valve 24. Among them, the cool-warm box body 21 is provided with a storage cavity for storing items (such as food, medicine, cosmetics, etc.). The first heat exchange pipe 22 is connected to the compressor 10 to form a heat exchange circuit for the cool-warm box, and the first heat exchange pipe 22 has a heat exchange section for exchanging heat with the cool-warm box body 21. That is, after flowing out from the compressor 10, the refrigerant can flow through the cool-warm box body 21 through the heat exchange circuit of the cool-warm box, so that the refrigerant can heat or cool the cool-warm box body 21, thereby realizing heating or refrigerating the items in the cool-warm box body 21.

[0060] In Figure 1 it, a section of the pipe of the first heat exchange pipe 22 passing through the cool-warm box body 21 is the heat exchange section. Here, it should be noted that in order to realize the heat exchange between the cool-warm box body 21 and the heat exchange section, the cool-warm box body 21 can be sleeved outside the heat exchange section, and then directly conduct heat contact with the first heat exchange pipe 22; or, a blower can also be set at the position corresponding to the cool-warm box body 21, and the blower blows the heat on the heat exchange section into the storage cavity of the cool-warm box body 21.

[0061] Here, it should be noted that the heat exchange section can extend linearly or bendedly when passing through the cool-warm box body 21.

[0062] As Figure 1 shown, in this embodiment, the first flow valve 23 and the second flow valve 24 are both arranged on the first heat exchange pipeline 22, and in the extending direction of the first heat exchange pipeline 22, the cold and warm box body 21 is located between the first flow valve 23 and the second flow valve 24. Specifically, in this embodiment, both the first flow valve 23 and the second flow valve 24 can control the flow rate of the refrigerant flowing through themselves, and thus control the flow rate of the refrigerant flowing through the cold and warm box body 21.

[0063] It can be understood that in this embodiment, by setting the first flow valve 23 and the second flow valve 24, and in the extending direction of the first heat exchange pipeline 22, the cold and warm box body 21 is located between the first flow valve 23 and the second flow valve 24. Thus, whether the flow direction of the refrigerant is from the first flow valve 23 to the second flow valve 24 or from the second flow valve 24 to the first flow valve 23, the flow rate of the refrigerant flowing through the cold and warm box body 21 can be controlled by the first flow valve 23 or the second flow valve 24. In this way, the temperature of the cold and warm box body 21 during heating or cooling can be controlled more precisely, and thus different heating or cooling requirements of users can be met, making the vehicle-mounted cold and warm box more convenient to use.

[0064] In addition, by arranging the first flow valve 23 and the second flow valve 24 on both sides of the cold and warm box body 21, the residence time of the refrigerant between the first flow valve 23 and the second flow valve 24 can be controlled through the joint cooperation of the first flow valve 23 and the second flow valve 24. Thus, it is beneficial for the refrigerant to fully exchange heat with the cold and warm box body 21, realizing the efficient utilization of the heat or cold of the refrigerant.

[0065] It should be noted here that the specific types of the first flow valve 23 and the second flow valve 24 are not limited. For example, they can be throttle valves, expansion valves, etc. The specific types can be flexibly selected according to needs, as long as they can control the flow rate of the refrigerant flowing through the cold and warm box body 21.

[0066] Optionally, in an embodiment, as Figure 1 shown, the first heat exchange pipeline 22 is provided with a first pipe orifice 221 and a second pipe orifice 222. The first pipe orifice 221 is located on the side of the first flow valve 23 away from the cold and warm box body 21, and the second pipe orifice 222 is located on the side of the second flow valve 24 away from the cold and warm box body 21. The cold and warm box heat exchange loop includes a cold and warm box heating loop and a cold and warm box cooling loop, and the cold and warm box heating loop and the cold and warm box cooling loop share the first heat exchange pipeline 22.

[0067] Among them, the cold and warm box heating loop can refer to Figure 5The refrigerant flow arrow in it indicates that when the cold and warm box body 21 is in heating mode, the refrigerant circulates in the cold and warm box heating circuit. After being compressed, the refrigerant flows out from the air outlet 12 of the compressor 10, then successively passes through the first pipe orifice 221, the first flow valve 23, the cold and warm box body 21, the second flow valve 24, the second pipe orifice 222, and finally flows back to the compressor 10 from the air inlet 11 of the compressor 10. That is to say, when the refrigerant circulates in the cold and warm box heating circuit, the flow direction of the refrigerant in the first heat exchange pipeline 22 is from the first pipe orifice 221 to the second pipe orifice 222.

[0068] The cold and warm box refrigeration circuit can refer to Figure 6 the refrigerant flow schematic diagram in it. When the cold and warm box body 21 is in cooling mode, the refrigerant circulates in the cold and warm box refrigeration circuit. After being compressed, the refrigerant flows out from the air outlet 12 of the compressor 10, then successively passes through the second pipe orifice 222, the second flow valve 24, the cold and warm box body 21, the first flow valve 23, the first pipe orifice 221, and finally flows back to the compressor 10 from the air inlet 11 of the compressor 10. That is to say, when the refrigerant circulates in the cold and warm box refrigeration circuit, the flow direction of the refrigerant in the first heat exchange pipeline 22 is from the second pipe orifice 222 to the first pipe orifice 221.

[0069] On this basis, the first flow valve 23 is a throttle valve with variable orifice and is located between the first pipe orifice 221 and the cold and warm box body 21. In this way, not only can the flow rate of the refrigerant flowing through the cold and warm box body 21 be adjusted by adjusting the orifice of the first flow valve 23, but also it can ensure that the refrigerant flowing from the first flow valve 23 to the cold and warm box body 21 is in a high-temperature and high-pressure state, so as to heat the cold and warm box body 21.

[0070] In addition, the second flow valve 24 is a two-way electronic expansion valve and is located between the second pipe orifice 222 and the cold and warm box body 21. The two-way electronic expansion valve itself not only has the function of adjusting the refrigerant flow rate, but also can convert the high-temperature and high-pressure refrigerant into a low-temperature and low-pressure refrigerant. In this way, not only can the flow rate of the refrigerant flowing through the cold and warm box body 21 be adjusted by the second flow valve 24, but also it can ensure that the refrigerant flowing from the second flow valve 24 to the cold and warm box body 21 is in a low-temperature and low-pressure state, so as to cool the cold and warm box body 21.

[0071] Optionally, in one embodiment, as Figure 1 shown, the first heat exchange pipeline 22 is also provided with a first temperature and pressure sensor 25 on the side of the cold and warm box body 21 away from the second flow valve 24. When the cold and warm box body 21 is in cooling mode, the first temperature and pressure sensor 25 can detect the temperature and pressure of the refrigerant flowing through the cold and warm box body 21, and can feedback the temperature and pressure of the refrigerant to the second flow valve 24, so as to control the flow rate of the refrigerant through the second flow valve 24 to meet the user's cooling requirements.

[0072] As Figure 1As shown, on the side of the first heat exchange pipeline 22 away from the first flow valve 23 of the cold and warm box body 21, a first temperature sensor 26 is further provided. When the cold and warm box body 21 is heating, the first temperature sensor 26 can detect the temperature of the refrigerant flowing through the cold and warm box body 21, and can feedback the temperature of the refrigerant to the first flow valve 23. Furthermore, the flow rate of the refrigerant can be controlled through the first flow valve 23 to meet the heating requirements of users.

[0073] It should be noted here that usually, the usage frequency and duration of the cold and warm box body 21 for refrigeration are greater than those for heating. Therefore, in this embodiment, when the cold and warm box body 21 is refrigerating, the first temperature sensor 26 is used to simultaneously detect the temperature and pressure of the refrigerant, so as to more accurately control the refrigerating capacity of the refrigerant and better meet the refrigeration requirements of users. When the cold and warm box body 21 is heating, the first temperature sensor 26 is used to detect the temperature of the refrigerant, which can reduce costs while feedbacking the refrigerant temperature.

[0074] Optionally, in one embodiment, as Figure 1 shown, the compressor 10 is provided with an air inlet 11 and an air outlet 12. The thermal management system 100 further includes a first connecting pipeline 31, a second connecting pipeline 32, a third connecting pipeline 33, and a fourth connecting pipeline 34, each provided with a switching valve.

[0075] Among them, the first connecting pipeline 31 is connected between the air outlet 12 and the first pipe orifice 221, and the second connecting pipeline 32 is connected between the second pipe orifice 222 and the air inlet 11 to form a heating circuit for the cold and warm box. In this way, after the refrigerant is compressed into a high-temperature and high-pressure state, it can flow into the first heat exchange pipeline 22 from the first pipe orifice 221 and flow through the cold and warm box body 21, thereby providing heat for the cold and warm box body 21 and enabling the cold and warm box body 21 to heat.

[0076] Among them, the third connecting pipeline 33 is connected between the air outlet 12 and the second pipe orifice 222, and the fourth connecting pipeline 34 is connected between the first pipe orifice 221 and the air inlet 11 to form a refrigeration circuit for the cold and warm box. In this way, after the refrigerant is compressed into a high-temperature and high-pressure state, it can flow into and pass through the second flow valve 24 (the second flow valve 24 is a two-way electronic expansion valve) from the second pipe orifice 222, and then be converted into a low-temperature and low-pressure refrigerant by the second flow valve 24, so as to be able to provide cold for the cold and warm box body 21 and enable the cold and warm box body 21 to refrigerate.

[0077] Optionally, in one embodiment, as Figure 2As shown, the thermal management system 100 further includes a battery pack assembly 40, which includes a heat exchange plate 41, a second heat exchange pipeline 42, a third flow valve 43, and a fourth flow valve 44. Among them, the battery pack assembly 40 is a component for supplying electrical energy to the vehicle. Generally, a plurality of batteries are included in the battery pack. The heat exchange plate 41 is a component in the battery pack for heating or cooling the batteries.

[0078] In this embodiment, the second heat exchange pipeline 42 is connected to the compressor 10 to form a battery pack heat exchange loop, and the second heat exchange pipeline 42 is used for heat exchange with the heat exchange plate 41. Specifically, the heat exchange plate 41 is communicated with the second heat exchange pipeline 42. The refrigerant flows into the heat exchange plate 41 through the second heat exchange pipeline 42 and then flows out of the second heat exchange pipeline 42. When the refrigerant flows into the heat exchange plate 41, the refrigerant can exchange heat with the batteries in the battery pack to heat or cool the batteries.

[0079] Crucially, in this embodiment, both the third flow valve 43 and the fourth flow valve 44 are provided on the second heat exchange pipeline 42, and in the extending direction of the second heat exchange pipeline 42, the heat exchange plate 41 is located between the third flow valve 43 and the fourth flow valve 44. Both the third flow valve 43 and the fourth flow valve 44 can control the flow rate of the refrigerant flowing through themselves, and thus control the flow rate of the refrigerant flowing through the heat exchange plate 41.

[0080] It can be understood that in this embodiment, by setting the third flow valve 43 and the fourth flow valve 44, and in the extending direction of the first heat exchange pipeline 22, the heat exchange plate 41 is located between the third flow valve 43 and the fourth flow valve 44. Thus, whether the flow direction of the refrigerant is from the third flow valve 43 to the fourth flow valve 44 or from the fourth flow valve 44 to the third flow valve 43, the flow rate of the refrigerant flowing through the heat exchange plate 41 can be controlled by the third flow valve 43 or the fourth flow valve 44. In this way, the temperature during heating or cooling of the heat exchange plate 41 can be controlled more precisely, thereby meeting different heating or cooling requirements of users and making the in-vehicle cooling and heating box more convenient to use.

[0081] In addition, by providing the third flow valve 43 and the fourth flow valve 44 on both sides of the heat exchange plate 41, the residence time of the refrigerant between the third flow valve 43 and the fourth flow valve 44 can be controlled through the cooperation of the third flow valve 43 and the fourth flow valve 44, which is conducive to the full heat exchange between the refrigerant and the heat exchange plate 41 and realizes the efficient utilization of the heat or cold of the refrigerant.

[0082] It should be noted here that the specific types of the third flow valve 43 and the fourth flow valve 44 are not limited. For example, they can be throttle valves, expansion valves, etc. The specific types can be flexibly selected according to needs, as long as they can control the flow rate of the refrigerant flowing through the heat exchange plate 41.

[0083] Optionally, in an embodiment, asFigure 2 As shown, a plurality of heat exchange plates 41 and a plurality of second heat exchange pipelines 42 are provided respectively. The plurality of heat exchange plates 41 and the plurality of second heat exchange pipelines 42 correspond one by one, and the plurality of second heat exchange pipelines 42 are connected in parallel. A third flow valve 43 and a fourth flow valve 44 are provided on each second heat exchange pipeline 42.

[0084] Specifically, in this embodiment, two heat exchange plates 41 and two second heat exchange pipelines 42 are provided respectively. One of the two heat exchange plates 41 can be used as the upper cold plate of the battery pack and is arranged above the battery pack, and the other half is used as the lower cold plate of the battery pack and is arranged below the battery pack. The two heat exchange pipelines correspond to the two heat exchange plates 41 one by one to exchange heat with the two heat exchange plates 41 respectively, and a third flow valve 43 and a fourth flow valve 44 are provided on each second heat exchange pipeline 42, so that the flow rate of the refrigerant flowing through each heat exchange plate 41 can be controlled, and then the battery pack can be heated or cooled to different degrees.

[0085] Optionally, in an embodiment, as Figure 2 shown, the second heat exchange pipeline 42 is provided with a third pipe orifice 421 and a fourth pipe orifice 422. The third pipe orifice 421 is located on the side of the third flow valve 43 away from the heat exchange plate 41, and the fourth pipe orifice 422 is located on the side of the fourth flow valve 44 away from the heat exchange plate 41. The battery pack heat exchange loop includes a battery pack heating loop and a battery pack cooling loop sharing the second heat exchange pipeline 42.

[0086] Among them, the battery pack heating loop can refer to Figure 7 the indication of the refrigerant flow direction arrow in. When the heat exchange plate 41 is heating, the refrigerant circulates in the battery pack heating loop. After being compressed, the refrigerant flows out from the air outlet 12 of the compressor 10, and then successively flows through the third pipe orifice 421, the third flow valve 43, the heat exchange plate 41, the fourth flow valve 44, the fourth pipe orifice 422, and finally flows back to the compressor 10 from the air inlet 11 of the compressor 10. That is, when the refrigerant circulates in the battery pack heating loop, the flow direction of the refrigerant in the second heat exchange pipeline 42 is from the third pipe orifice 421 to the fourth pipe orifice 422.

[0087] The battery pack cooling loop can refer to Figure 8 the indication of the refrigerant flow direction arrow in. When the heat exchange plate 41 is cooling, the refrigerant circulates in the battery pack cooling loop. After being compressed, the refrigerant flows out from the air outlet 12 of the compressor 10, and then successively flows through the fourth pipe orifice 422, the fourth flow valve 44, the heat exchange plate 41, the third flow valve 43, the third pipe orifice 421, and finally flows back to the compressor 10 from the air inlet 11 of the compressor 10. That is, when the refrigerant circulates in the battery pack cooling loop, the flow direction of the refrigerant in the second heat exchange pipeline 42 is that the refrigerant flows from the fourth pipe orifice 422 to the third pipe orifice 421.

[0088] On this basis, the third flow valve 43 is a throttle valve with variable orifice and is located between the first pipe orifice 221 and the heat exchange plate 41. In this way, not only can the flow rate of the refrigerant flowing through the heat exchange plate 41 be adjusted by adjusting the orifice of the third flow valve 43, but also it can be ensured that the refrigerant flowing from the third flow valve 43 to the heat exchange plate 41 is in a high-temperature and high-pressure state, so as to heat the battery pack.

[0089] In addition, the fourth flow valve 44 is a two-way electronic expansion valve and is located between the second pipe orifice 222 and the heat exchange plate 41. The two-way electronic expansion valve itself not only has the function of adjusting the refrigerant flow rate, but also can convert the high-temperature and high-pressure refrigerant into a low-temperature and low-pressure refrigerant. In this way, not only can the flow rate of the refrigerant flowing through the heat exchange plate 41 be adjusted by the fourth flow valve 44, but also it can be ensured that the refrigerant flowing from the second flow valve 24 to the heat exchange plate 41 is in a low-temperature and low-pressure state, so as to cool the battery pack.

[0090] Optionally, in an embodiment, as Figure 2 shown, a second temperature and pressure sensor 45 is further provided between the third pipe orifice 421 of the second heat exchange pipeline 42 and the heat exchange plate 41. When the battery pack is cooled, the second temperature and pressure sensor 45 can detect the temperature and pressure of the refrigerant flowing through the heat exchange plate 41, and can feedback the temperature and pressure of the refrigerant to the fourth flow valve 44, so as to control the flow rate of the refrigerant through the fourth flow valve 44 to meet the cooling requirement of the battery pack.

[0091] As Figure 2 shown, a second temperature sensor 46 is further provided between the fourth pipe orifice 422 of the second heat exchange pipeline 42 and the heat exchange plate 41. When the battery pack is heated, the second temperature sensor 46 can detect the temperature of the refrigerant flowing through the heat exchange plate 41, and can feedback the temperature of the refrigerant to the third flow valve 43, so as to control the flow rate of the refrigerant through the third flow valve 43 to meet the heating requirement of the battery pack.

[0092] Optionally, in an embodiment, as Figure 2 shown, the first connection pipeline 31 is further connected between the air outlet 12 and the third pipe orifice 421, and the second connection pipeline 32 is further connected between the fourth pipe orifice 422 and the air inlet 11 to form a battery pack heating circuit. In this way, after the refrigerant is compressed into a high-temperature and high-pressure state, it can flow into the second heat exchange pipeline 42 from the third pipe orifice 421 and flow through the heat exchange plate 41, so as to provide heat for the battery pack to heat the battery pack.

[0093] The third connecting pipeline 33 is also connected between the air outlet 12 and the fourth pipe orifice 422, and the fourth connecting pipeline 34 is also connected between the third pipe orifice 421 and the air inlet 11 to form a refrigeration circuit for the battery pack. After the refrigerant is compressed into a high-temperature and high-pressure state, it can flow in from the fourth pipe orifice 422 and pass through the fourth flow valve 44 (the fourth flow valve 44 is a two-way electronic expansion valve), and then is converted into a low-temperature and low-pressure refrigerant by the fourth flow valve 44, so as to be able to provide cooling capacity for the heat exchange plate 41 to cool the battery pack.

[0094] Optionally, in an embodiment, as Figure 2 shown, an in-vehicle air conditioner condenser 51 and a first expansion valve 52 are further connected to the third connecting pipeline 33. The first expansion valve 52 is located on the side of the in-vehicle air conditioner condenser 51 away from the compressor 10, and the first expansion valve 52 can be used as a switching valve on the third pipeline. Specifically, in this embodiment, the in-vehicle air conditioner condenser 51 is used for heating the passenger compartment. When the high-temperature and high-pressure refrigerant flows through the in-vehicle air conditioner condenser 51, a blower can blow air to the in-vehicle air conditioner condenser 51, and the air flow absorbs heat at the in-vehicle air conditioner condenser 51 and then flows into the passenger compartment, thereby realizing the heating of the passenger compartment. After the refrigerant flows through the first expansion valve 52, it is converted into a low-temperature and low-pressure state.

[0095] As described above (reference can be made to Figure 11 and Figure 12 ), when the cooling box body 21 or the battery pack is refrigerated, after the high-temperature and high-pressure refrigerant flows out of the compressor 10, it flows to the first heat exchange pipeline 22 or the second heat exchange pipeline 42 through the third connecting pipeline 33. Therefore, when the in-vehicle air conditioner condenser 51 and the first expansion valve 52 are further connected to the third connecting pipeline 33, the heating of the passenger compartment can be carried out while the cooling box body 21 is refrigerated or the battery pack is refrigerated.

[0096] It can be understood that in this embodiment, by connecting the in-vehicle air conditioner condenser 51 and the first expansion valve 52 to the third connecting pipeline 33, the integration of the cooling box heat exchange system, the battery pack heat exchange system and the vehicle air conditioning system can be realized, so that the integration degree of the thermal management system 100 is higher, and thus the structure of the vehicle is more compact.

[0097] Here, it should be noted that in order to realize the heating of the passenger compartment, as Figure 2 shown, a PTC heater 58 (Positive Temperature Coefficient, electric heater) can also be set. The PTC heater 58 converts electrical energy into heat energy, and then a blower can blow air to the PTC heater 58. The air flow absorbs heat at the PTC heater 58 and then flows into the passenger compartment, thereby realizing the heating of the passenger compartment.

[0098] Optionally, in an embodiment, as Figure 2As shown, the thermal management system 100 further includes a power assembly 60, which includes a power train 61, a water pump 62, a water tank 63, a four-way valve 64, a radiator 65, a cooling fan 66, and a power heat exchanger 67. The power assembly 60 is mainly used to provide power for the vehicle, and a large amount of heat will be generated during the operation of the power assembly 60. The power heat exchanger 67 is thermally connected to the third connecting pipe 33 so that the power heat exchanger 67 can exchange heat with the third connecting pipe 33, thereby cooling the power assembly 60.

[0099] It can be understood that in this embodiment, the refrigerant becomes a low-temperature and low-pressure state after flowing through the first expansion valve 52. At this time, because the power heat exchanger 67 is thermally connected to the third connecting pipe 33, the power heat exchanger 67 can exchange heat with the low-temperature and low-pressure refrigerant, thereby realizing the cooling of the power assembly 60 and the efficient utilization of the cooling capacity of the refrigerant.

[0100] Optionally, in one embodiment, as Figure 2 shown, the third connecting pipe 33 includes a power heat exchange section 331 and a first one-way section 332. The power heat exchange section 331 is connected between the first expansion valve 52 and the first one-way section 332. One end of the first one-way section 332 away from the power heat exchange section 331 is connected to the second pipe orifice 222 and the fourth pipe orifice 422. Then, when cooling the passenger compartment, cooling the main body 21 of the cooler or cooling the battery pack, after the refrigerant flows out of the air outlet 12 of the compressor 10, it sequentially flows through the in-vehicle air conditioner condenser 51, the first expansion valve 52, the power heat exchange section 331, and the first one-way section 332, and then flows into the second pipe orifice 222 and / or the fourth pipe orifice 422.

[0101] As Figure 2 shown, the second connecting pipe 32 includes a second one-way section 321 and a return section 322. The second one-way section 321 is connected to the second pipe orifice 222 and the fourth pipe orifice 422, and the other end is connected to the power heat exchange section 331; one end of the return section 322 is connected to the power heat exchange section 331, and the other end is connected to the air inlet 11. Then, when heating the main body 21 of the cooler or heating the battery pack, after the refrigerant flows out of the second pipe orifice 222 and / or the fourth pipe orifice 422, it sequentially flows through the second one-way section 321, the power heat exchange section 331, and the return section 322, and then flows back into the compressor 10 from the air inlet 11 of the compressor 10.

[0102] Among them, in order to prevent the refrigerant from flowing out through the first one-way section 332 after passing through the second pipe orifice 222 and / or the fourth pipe orifice 422 when the cold and warm box body 21 or the battery pack is heated, a first one-way valve 75 is provided in the first one-way section 332. The first one-way valve 75 allows the refrigerant to flow from the power heat exchange section 331 to the second pipe orifice 222 and the fourth pipe orifice 422, and does not allow the refrigerant to flow out through the first one-way section 332 after passing through the second pipe orifice 222 and / or the fourth pipe orifice 422. At the same time, in order to prevent the refrigerant from flowing from the power heat exchange section 331 to the second pipe orifice 222 and / or the fourth pipe orifice 422 through the second one-way section 321 when the cold and warm box body 21 or the battery pack is cooled, a second one-way valve 76 is provided on the second one-way section 321. The second one-way valve 76 allows the refrigerant to flow from the second pipe orifice 222 and the fourth pipe orifice 422 to the power heat exchange section 331, and does not allow the refrigerant to flow from the power heat exchange section 331 to the second pipe orifice 222 and / or the fourth pipe orifice 422 through the second one-way section 321.

[0103] Optionally, in one embodiment, as Figure 2 shown, a switching valve (i.e., the fourth switching valve 74) is provided on the reflux section 322. The switching valve can be used as the switching valve on the second connection pipeline 32, and the switching valve can open and close the reflux section 322. In this way, when it is necessary to simultaneously heat the passenger compartment and cool the cold and warm box or the battery pack, the switching valve on the reflux section 322 can close the reflux section 322, so that after the refrigerant flows through the vehicle air conditioner condenser 51, it first flows through the cold and warm box body 21 or the battery pack, and then flows back to the compressor 10.

[0104] When only heating the passenger compartment is required, the switching valve on the reflux section 322 can open the reflux section 322, and at the same time, the flow valves on the first heat exchange pipeline 22 and the second heat exchange pipeline 42 can close the first heat exchange pipeline 22 and the second heat exchange pipeline 42. In this way, after the refrigerant flows through the vehicle air conditioner condenser 51, it can directly flow back to the compressor 10 through the reflux section 322.

[0105] Optionally, in one embodiment, as Figure 2 shown, both the second connection pipeline 32 and the fourth connection pipeline 34 are also connected to the air inlet 11 through the gas-liquid separator 80. In this way, the liquid refrigerant can be filtered out by the gas-liquid separator 80 to avoid the situation of liquid slugging when the liquid refrigerant flows into the compressor 10, and the service life of the compressor 10 is ensured.

[0106] Optionally, in one embodiment, as Figure 1 or Figure 2As shown, the heating and cooling box assembly 20 further includes an accumulator 27. The accumulator 27 is used to absorb and store cold or heat from the first heat exchange pipeline 22, and the accumulator 27 is used to release the stored cold or heat to the heating and cooling box body 21. Specifically, in this embodiment, the accumulator 27 can be made of a phase change material, and the accumulator 27 can absorb and store cold or heat from the first heat exchange pipeline 22. After the compressor 10 stops operating, the accumulator 27 can release the stored cold or heat to the heating and cooling box body 21, so that the heating and cooling box body 21 can keep warm or cold, and further meet the user's heat preservation or cold preservation needs without starting the compressor 10.

[0107] Optionally, in one embodiment, as Figure 1 or Figure 2 shown, the thermal management system 100 further includes an external air conditioner condenser 53 and an evaporator 54. The external air conditioner condenser 53, the evaporator 54 and the compressor 10 are connected to form an air conditioner heat exchange circuit. The air conditioner heat exchange circuit specifically includes an air conditioner heating circuit and an air conditioner cooling circuit.

[0108] Among them, the refrigerant flow direction arrow indication in the air conditioner heating circuit can be referred to in Figure 3 . When the air conditioner is heating, the refrigerant flows out from the air outlet 12 of the compressor 10, and then successively flows through the in-vehicle air conditioner condenser 51, the first expansion valve 52, the power heat exchanger 67, the return section 322, the gas-liquid separator 80, and finally flows back to the compressor 10 through the air inlet 11 of the compressor 10.

[0109] The refrigerant flow direction arrow indication in the air conditioner cooling circuit can be referred to in Figure 4 . When the air conditioner is cooling, the refrigerant is discharged from the air outlet 12 of the compressor 10, and then successively flows through the external air conditioner condenser 53, the liquid storage tank 56, the second expansion valve 55, the evaporator 54, the gas-liquid separator 80, and finally flows back to the compressor 10 through the air inlet 11 of the compressor 10.

[0110] In summary, the thermal management system 100 of the present application at least includes the following working conditions:

[0111] Working condition 1: Only the passenger compartment is heated. As Figure 3 shown, the first expansion valve 52 and the fourth switching valve 74 are opened, and the first switching valve 71, the second switching valve 72, the first flow valve 23, the second flow valve 24, the third flow valve 43, the fourth flow valve 44 and the second expansion valve 55 are all closed. After the refrigerant flows out from the air outlet 12 of the compressor 10, it successively passes through the in-vehicle air conditioner condenser 51, the first expansion valve 52, the power heat exchanger 67, the fourth switching valve 74 and the gas-liquid separator 80, and finally flows back to the compressor 10 through the air inlet 11 of the compressor 10.

[0112] Working condition 2: Only the passenger compartment is cooled. As Figure 4As shown, the first switching valve 71 and the second expansion valve 55 are opened, and the second switching valve 72, the first expansion valve 52, the first flow valve 23, the second flow valve 24, the third flow valve 43, the fourth flow valve 44, the fourth switching valve 74, and the third switching valve 73 are all closed. After the refrigerant flows out of the outlet 12 of the compressor 10, it successively passes through the first switching valve 71, the vehicle external air conditioner condenser 53, the liquid storage tank 56, the third one-way valve 77, the second expansion valve 55, the evaporator 54, and the gas-liquid separator 80, and finally flows back to the compressor 10 from the inlet 11 of the compressor 10.

[0113] Operating condition three: Only the cold and warm box is heated, as Figure 5 As shown, the second switching valve 72, the first flow valve 23, the second flow valve 24, and the fourth switching valve 74 are all opened, and the first switching valve 71, the third switching valve 73, the third flow valve 43, the fourth flow valve 44, and the second expansion valve 55 are all closed. After the refrigerant flows out of the outlet 12 of the compressor 10, it successively flows through the second switching valve 72, the first flow valve 23, the cold and warm box body 21, the second flow valve 24, the second one-way valve 76, the power heat exchanger 67, the fourth switching valve 74, and the gas-liquid separator 80, and finally flows back to the compressor 10 from the inlet 11 of the compressor 10.

[0114] Operating condition four: Only the cold and warm box is cooled, as Figure 6 As shown, the first switching valve 71, the second flow valve 24, the first flow valve 23, and the third switching valve 73 are all opened, and the second switching valve 72, the third flow valve 43, the fourth flow valve 44, the fourth switching valve 74, and the second expansion valve 55 are all closed. After the refrigerant flows out of the outlet 12 of the compressor 10, it successively flows through the first switching valve 71, the vehicle external air conditioner condenser 53, the liquid storage tank 56, the third one-way valve 77, the first one-way valve 75, the second flow valve 24, the cold and warm box body 21, the first flow valve 23, the third switching valve 73, and the gas-liquid separator 80, and finally flows back to the compressor 10 from the inlet 11 of the compressor 10.

[0115] Operating condition five: Only the battery pack is heated, as Figure 7 As shown, the second switching valve 72, the third flow valve 43, the fourth flow valve 44, and the fourth switching valve 74 are all opened, and the first switching valve 71, the third switching valve 73, the first flow valve 23, the second flow valve 24, and the second expansion valve 55 are all closed. After the refrigerant flows out of the outlet 12 of the compressor 10, it successively flows through the second switching valve 72, the third flow valve 43, the heat exchange plate 41, the fourth flow valve 44, the second one-way valve 76, the power heat exchanger 67, the fourth switching valve 74, and the gas-liquid separator 80, and finally flows back to the compressor 10 from the inlet 11 of the compressor 10.

[0116] It should be noted here that when the battery pack assembly 40 includes a plurality of second heat exchange tubes and a plurality of heat exchange plates 41, by controlling the opening and closing of the third flow valve 43 and the fourth flow valve 44, it is possible to control all the second heat exchange tubes to heat the corresponding heat exchange plates 41, or control a part of the second heat exchange tubes to heat the corresponding heat exchange plates 41.

[0117] Condition six: Only the battery pack is cooled. As Figure 8 shown, the first switching valve 71, the fourth flow valve 44, the third flow valve 43, and the third switching valve 73 are all opened, and the second switching valve 72, the first flow valve 23, the second flow valve 24, the fourth switching valve 74, and the second expansion valve 55 are all closed. After the refrigerant flows out from the outlet 12 of the compressor 10, it successively flows through the first switching valve 71, the vehicle exterior air conditioner condenser 53, the liquid storage tank 56, the third one-way valve 77, the first one-way valve 75, the fourth flow valve 44, the heat exchange plate 41, the third flow valve 43, the third switching valve 73, and the gas-liquid separator 80, and finally flows back to the compressor 10 from the inlet 11 of the compressor 10.

[0118] It should be noted here that when the battery pack assembly 40 includes a plurality of second heat exchange tubes and a plurality of heat exchange plates 41, by controlling the opening and closing of the third flow valve 43 and the fourth flow valve 44, it is possible to control all the second heat exchange tubes to cool the corresponding heat exchange plates 41, or control a part of the second heat exchange tubes to cool the corresponding heat exchange plates 41.

[0119] In addition, by controlling the opening and closing of each valve, any combination of the above conditions one to six can be achieved. The following will list several combined embodiments for illustration:

[0120] Condition seven: The passenger compartment is heated and the cooler box is heated simultaneously (i.e., the combination of condition one and condition three). As Figure 9 shown, the first expansion valve 52, the second switching valve 72, the first flow valve 23, the second flow valve 24, and the fourth switching valve 74 are all opened, and the first switching valve 71, the third switching valve 73, the third flow valve 43, the fourth flow valve 44, and the second expansion valve 55 are all closed. After the refrigerant flows out from the outlet 12 of the compressor 10, a part of the refrigerant successively passes through the in-vehicle air conditioner condenser 51, the first expansion valve 52, the power heat exchanger 67, the fourth switching valve 74, and the gas-liquid separator 80, and finally flows back to the compressor 10 from the inlet 11 of the compressor 10. Another part of the refrigerant successively flows through the second switching valve 72, the first flow valve 23, the cooler box body 21, the second flow valve 24, the second one-way valve 76, the power heat exchanger 67, the fourth switching valve 74, and the gas-liquid separator 80, and finally flows back to the compressor 10 from the inlet 11 of the compressor 10.

[0121] Condition eight: The passenger compartment is heated and the battery pack is heated simultaneously (i.e., the combination of condition one and condition five). AsFigure 10 As shown, the first expansion valve 52, the second switching valve 72, the third flow valve 43, the fourth flow valve 44, and the fourth switching valve 74 are all open, while the first switching valve 71, the third switching valve 73, the first flow valve 23, the third flow valve 43, and the second expansion valve 55 are all closed. After the refrigerant flows out from the outlet 12 of the compressor 10, a part of the refrigerant successively passes through the in-vehicle air-conditioning condenser 51, the first expansion valve 52, the power heat exchanger 67, the fourth switching valve 74, and the gas-liquid separator 80, and finally flows back to the compressor 10 from the inlet 11 of the compressor 10. Another part of the refrigerant successively flows through the second switching valve 72, the third flow valve 43, the heat exchange plate 41, the fourth flow valve 44, the second check valve 76, the power heat exchanger 67, the fourth switching valve 74, and the gas-liquid separator 80, and finally flows back to the compressor 10 from the inlet 11 of the compressor 10.

[0122] It should be noted here that when the battery pack assembly 40 includes a plurality of second heat exchange tubes and a plurality of heat exchange plates 41, by controlling the opening and closing of the third flow valve 43 and the fourth flow valve 44, it is possible to control all the second heat exchange tubes to heat the corresponding heat exchange plates 41, or control a part of the second heat exchange tubes to heat the corresponding heat exchange plates 41.

[0123] Operating condition nine: simultaneously performing heating in the passenger compartment and refrigerating in the cooler (i.e., a combination of operating condition one and operating condition four), as Figure 11 shown, the first expansion valve 52, the second flow valve 24, the first flow valve 23, and the third switching valve 73 are all open, while the first switching valve 71, the second switching valve 72, the fourth flow valve 44, the third flow valve 43, the fourth switching valve 74, and the second expansion valve 55 are all closed. After the refrigerant flows out from the outlet 12 of the compressor 10, it successively flows through the in-vehicle air-conditioning condenser 51, the first expansion valve 52, the power heat exchanger 67, the first check valve 75, the second flow valve 24, the cooler body 21, the first flow valve 23, the third switching valve 73, and the gas-liquid separator 80, and finally flows back to the compressor 10 from the inlet 11 of the compressor 10.

[0124] Operating condition ten: simultaneously performing heating in the passenger compartment and refrigerating the battery pack (i.e., a combination of operating condition one and operating condition six), as Figure 12 shown, the first expansion valve 52, the fourth flow valve 44, the third flow valve 43, and the third switching valve 73 are all open, while the first switching valve 71, the second switching valve 72, the second flow valve 24, the first flow valve 23, the fourth switching valve 74, and the second expansion valve 55 are all closed. After the refrigerant flows out from the outlet 12 of the compressor 10, it successively flows through the in-vehicle air-conditioning condenser 51, the first expansion valve 52, the power heat exchanger 67, the first check valve 75, the fourth flow valve 44, the heat exchange plate 41, the third flow valve 43, the third switching valve 73, and the gas-liquid separator 80, and finally flows back to the compressor 10 from the inlet 11 of the compressor 10.

[0125] Of course, the thermal management system 100 of the present application can also perform heating of the passenger compartment, heating of the refrigerator, and heating of the battery pack simultaneously (i.e., the combination of operating conditions one, three, and five), or perform cooling of the passenger compartment, cooling of the refrigerator, and cooling of the battery pack simultaneously (i.e., the combination of operating conditions two, four, and six), or perform heating of the refrigerator and heating of the battery pack simultaneously (i.e., the combination of operating conditions three and five), or perform cooling of the refrigerator and cooling of the battery pack simultaneously (i.e., the combination of operating conditions four and six), etc. Specifically, it can be controlled according to actual needs.

[0126] According to a second aspect of the present application, there is provided a vehicle (not shown), which includes the thermal management system 100 of any one of the above embodiments. Therefore, the vehicle has all the beneficial effects of the above thermal management system 100, and details thereof are not described herein again.

[0127] It should be noted that the vehicle can be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and the present disclosure does not make specific limitations thereto.

[0128] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0129] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0130] Among the embodiments, embodiments, and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0131] The above are only the preferred embodiments of the present application, and do not impose any form of limitation on the present application. However, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A thermal management system, characterized in that: include: compressor; as well as, The cold and warm box assembly includes a cold and warm box body, a first heat exchange pipeline, a first flow valve and a second flow valve; The first heat exchange pipeline is connected to the compressor to form a heat exchange circuit for a cold and warm box, and the first heat exchange pipeline has a heat exchange section, and the heat exchange section is used to perform heat exchange with the cold and warm box body; The first flow valve and the second flow valve are both arranged on the first heat exchange pipeline, and the heat exchange section is located between the first flow valve and the second flow valve.

2. The thermal management system according to claim 1, characterized in that: The first heat exchange pipeline is provided with a first pipe opening and a second pipe opening, the cold and warm box heat exchange circuit comprises a cold and warm box heating circuit and a cold and warm box refrigeration circuit, and the cold and warm box heating circuit and the cold and warm box refrigeration circuit share the first heat exchange pipeline; When the cold / warm box body is heating, the refrigerant circulates in the heating circuit of the cold / warm box, and the refrigerant flows from the first pipe opening to the second pipe opening; when the cold / warm box body is cooling, the refrigerant circulates in the cooling circuit of the cold / warm box, and the refrigerant flows from the second pipe opening to the first pipe opening.

3. The thermal management system according to claim 2, characterized in that: The first flow valve is a throttle valve with a variable diameter and is located between the first pipe opening and the cooling and heating box body. The second flow valve is a two-way electronic expansion valve and is located between the second pipe opening and the cooling and heating box body.

4. The thermal management system according to claim 2, characterized in that: The first heat exchange pipeline is also provided with a first temperature and pressure sensor on the side of the cooling and heating box body away from the second flow valve, and / or the first heat exchange pipeline is also provided with a first temperature sensor on the side of the cooling and heating box body away from the first flow valve.

5. The thermal management system according to claim 2, characterized in that: The compressor is provided with an air inlet and an air outlet, and the thermal management system further comprises a first connecting pipeline, a second connecting pipeline, a third connecting pipeline and a fourth connecting pipeline, each of which is provided with a switch valve; The first connecting pipeline is connected between the air outlet and the first pipe port, and the second connecting pipeline is connected between the second pipe port and the air inlet to form a heating circuit for the cold and warm box; The third connecting pipeline is connected between the air outlet and the second pipe port, and the fourth connecting pipeline is connected between the first pipe port and the air inlet to form a refrigeration circuit of the cold and warm box.

6. The thermal management system according to claim 5, characterized in that: The thermal management system further includes a battery pack assembly, wherein the battery pack assembly includes a heat exchange plate, a second heat exchange pipeline, a third flow valve, and a fourth flow valve; The second heat exchange pipeline is connected to the compressor to form a battery pack heat exchange circuit, and the second heat exchange pipeline is used to perform heat exchange with the heat exchange plate; The third flow valve and the fourth flow valve are both arranged on the second heat exchange pipeline, and the heat exchange plate is located between the third flow valve and the fourth flow valve.

7. The thermal management system according to claim 6, characterized in that: The second heat exchange pipeline is provided with a third pipe opening and a fourth pipe opening; The first connecting pipeline is also connected between the air outlet and the third pipe port, and the second connecting pipeline is also connected between the fourth pipe port and the air inlet to form a battery pack heating circuit; The third connecting pipeline is also connected between the air outlet and the fourth pipe port, and the fourth connecting pipeline is also connected between the third pipe port and the air inlet to form a battery pack refrigeration circuit.

8. The thermal management system according to claim 7, characterized in that: The third connecting pipeline is also connected with an in-vehicle air-conditioning condenser and a first expansion valve, and the first expansion valve is located at a side of the in-vehicle air-conditioning condenser away from the compressor.

9. The thermal management system according to claim 8, characterized in that: The thermal management system further includes a power assembly, wherein the power assembly includes a power heat exchanger, and the power heat exchanger is thermally connected to the third connecting pipeline.

10. The thermal management system according to claim 9, characterized in that: The third connecting pipeline includes a power heat exchange section and a first one-way section, the power heat exchange section is connected between the first expansion valve and the first one-way section, and one end of the first one-way section away from the power heat exchange section is connected to the second pipe port and the fourth pipe port; The second connecting pipeline includes a second one-way section and a reflux section, the second one-way section is connected to the second pipe opening and the fourth pipe opening, and the other end is connected to the power heat exchange section; one end of the reflux section is connected to the power heat exchange section, and the other end is connected to the air inlet; The first one-way section is provided with a first one-way valve, which allows the refrigerant to flow from the power heat exchange section to the second pipe port and the fourth pipe port; the second one-way section is provided with a second one-way valve, which allows the refrigerant to flow from the second pipe port and the fourth pipe port to the power heat exchange section.

11. The thermal management system according to claim 10, characterized in that: The switch valve is provided on the reflux section, and / or the second connecting pipeline and the fourth connecting pipeline are both connected to the air inlet through a gas-liquid separator.

12. The thermal management system according to any one of claims 1 to 11, characterized in that: The cold and warm box assembly also includes an accumulator, which is used to absorb and store cold or heat from the first heat exchange pipeline, and the accumulator is used to release the stored cold or heat to the cold and warm box body.

13. The thermal management system according to any one of claims 1 to 11, characterized in that: The thermal management system further includes an outdoor air-conditioning condenser and an evaporator. The outdoor air-conditioning condenser, the evaporator and the compressor are connected to form an air-conditioning heat exchange loop.

14. A vehicle, characterized in that: A thermal management system comprising any one of claims 1-13.

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