Vehicle thermal management system and transportation refrigeration vehicle

Abstract

The invention provides a vehicle thermal management system and a transportation refrigeration vehicle. The air conditioning system is provided with a compressor, a first three-way valve, a first outdoor heat exchanger, an indoor heat exchanger, a regulating valve, an intermediate heat exchanger, a first throttling element, a second throttling element and a third throttling element, all of which are connected through pipelines, and the first throttling element, the second throttling element and the third throttling element have a cut-off function; and the battery cooling system is provided with a second outdoor heat exchanger, a battery cooling device and a second three-way valve which are connected through a pipeline. According to the vehicle heat management system, the vehicle battery can be cooled during refrigeration of the air conditioning system, the vehicle battery can be cooled during heating of the air conditioning system, meanwhile, the independent cooling function of the vehicle battery is not affected, and it can be guaranteed that the vehicle battery is always in a proper temperature range during operation.

Description

Technical Field

[0001] The present invention relates to the field of temperature regulation of transport vehicles, and more particularly to a vehicle thermal management system and a transport refrigeration vehicle. Background Art

[0002] In new energy electric vehicles or hybrid electric vehicles, power batteries, as energy carriers, play an important role in the normal driving of new energy electric vehicles or hybrid electric vehicles. The performance of power batteries, such as output power and service life, are closely related to the performance and life of the vehicle.

[0003] Power batteries must be within a certain temperature range when working to achieve optimal performance and ensure energy output. Under high temperature conditions, the power battery generates a lot of heat due to the large current it operates at. At the same time, the power battery is a relatively closed environment. If the heat is not discharged in time, the power battery will experience thermal runaway, shorten its life, and be damaged. Therefore, the power battery needs to be cooled when it is running. Summary of the invention

[0004] The present invention aims to provide a vehicle thermal management system and a transport refrigeration vehicle to at least partially solve or alleviate the problems existing in the prior art.

[0005] To achieve at least one purpose of the present invention, according to one aspect of the present invention, a vehicle thermal management system is provided, comprising:

[0006] An air conditioning system, which is provided with a compressor, a first three-way valve, a first outdoor heat exchanger, an indoor heat exchanger, a regulating valve, an intermediate heat exchanger, and a first throttling element, a second throttling element, and a third throttling element having a cut-off function, connected by pipelines, wherein the first three-way valve has a first port for communicating with the exhaust port of the compressor, a second port for communicating with the first end of the first outdoor heat exchanger, and a third port for communicating with the first end of the indoor heat exchanger; the second end of the first outdoor heat exchanger is connected to the first end of the indoor heat exchanger via the first throttling element, and the second end of the first outdoor heat exchanger is connected to the suction port of the compressor via the second throttling element and the intermediate heat exchanger; the second end of the indoor heat exchanger is connected to the suction port of the compressor via the regulating valve, and the second end of the indoor heat exchanger is connected to the suction port of the compressor via the third throttling element and the intermediate heat exchanger; and

[0007] A battery cooling system is provided with a second outdoor heat exchanger, a battery cooling device and a second three-way valve connected by pipelines, wherein the second three-way valve has a first port for communicating with the outlet of the battery cooling device, a second port for communicating with the intermediate heat exchanger and a third port for communicating with the first end of the second outdoor heat exchanger; the inlet of the battery cooling device and the second end of the second outdoor heat exchanger are simultaneously connected to the intermediate heat exchanger.

[0008] In addition to one or more of the above features, or as an alternative, in another embodiment, the regulating valve is a stepless regulating valve.

[0009] In addition to one or more of the above features, or as an alternative, in another embodiment, the vehicle thermal management system includes a controller that communicates with the regulating valve, the first throttle element, the second throttle element, the third throttle element, or any combination thereof.

[0010] In addition to one or more of the above features, or as an alternative, in another embodiment, the vehicle thermal management system includes: a cabin cooling and battery cooling mode, wherein the controller commands the opening of the first throttling element, the second throttling element, the first port and the second port of the first three-way valve, and the regulating valve, and closes the third throttling element and the third port of the first three-way valve so that the first throttling element and the second throttling element play a throttling role, so that a first part of the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the first throttling element, the indoor heat exchanger, the regulating valve and the suction port of the compressor in sequence; and at the same time, a second part of the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the second throttling element, the intermediate heat exchanger and the suction port of the compressor in sequence; and

[0011] The controller commands to open the first port and the second port of the second three-way valve and close the third port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the second port of the second three-way valve, the intermediate heat exchanger and the inlet of the battery cooling device in sequence.

[0012] In addition to one or more of the above features, or as an alternative, in another embodiment, the vehicle thermal management system includes: a cabin heating and battery cooling mode, wherein the controller commands the opening of the third throttling element, the first port and the third port of the first three-way valve, and the closing of the first throttling element, the second throttling element, the second port of the first three-way valve and the regulating valve so that the third throttling element plays a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the third port of the first three-way valve, the indoor heat exchanger, the third throttling element, the intermediate heat exchanger and the suction port of the compressor in sequence; and

[0013] The controller commands to open the first port and the second port of the second three-way valve and close the third port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the second port of the second three-way valve, the intermediate heat exchanger and the inlet of the battery cooling device in sequence.

[0014] In addition to one or more of the above features, or as an alternative, in another embodiment, the vehicle thermal management system includes: a cabin cooling and battery natural cooling mode, wherein the controller commands the opening of the first throttling element, the first port and the second port of the first three-way valve, and the regulating valve, and closes the second throttling element, the third throttling element, and the third port of the first three-way valve so that the first throttling element plays a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the first throttling element, the indoor heat exchanger, the regulating valve, and the suction port of the compressor in sequence; and

[0015] The controller commands to open the first port and the third port of the second three-way valve and close the second port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the third port of the second three-way valve, the second outdoor heat exchanger and the inlet of the battery cooling device in sequence.

[0016] To achieve at least one purpose of the present invention, according to another aspect of the present invention, a vehicle thermal management system is provided, comprising:

[0017] An air conditioning system, which is provided with a compressor, a first three-way valve, a first outdoor heat exchanger, an indoor heat exchanger, a regulating valve, an intermediate heat exchanger, a first non-return valve, a second non-return valve, and a first throttling element and a second throttling element having a cut-off function, which are connected by pipelines, wherein the first three-way valve has a first port for communicating with the exhaust port of the compressor, a second port for communicating with the first end of the first outdoor heat exchanger, and a third port for communicating with the first end of the indoor heat exchanger; the second end of the first outdoor heat exchanger is connected to the first end of the indoor heat exchanger via the first throttling element, and the second end of the first outdoor heat exchanger is connected to the suction port of the compressor via the first non-return valve, the second throttling element and the intermediate heat exchanger; the second end of the indoor heat exchanger is connected to the suction port of the compressor via the regulating valve, and the second end of the indoor heat exchanger is connected to the suction port of the compressor via the second non-return valve, the second throttling element and the intermediate heat exchanger; and

[0018] A battery cooling system is provided with a second outdoor heat exchanger, a battery cooling device and a second three-way valve connected by pipelines, wherein the second three-way valve has a first port for communicating with the outlet of the battery cooling device, a second port for communicating with the intermediate heat exchanger and a third port for communicating with the first end of the second outdoor heat exchanger; the inlet of the battery cooling device and the second end of the second outdoor heat exchanger are simultaneously connected to the intermediate heat exchanger.

[0019] In addition to one or more of the above features, or as an alternative, in another embodiment, the regulating valve is a stepless regulating valve.

[0020] In addition to or as an alternative to one or more of the above features, in another embodiment, the vehicle thermal management system includes a controller that communicates with the regulating valve, the first throttle element, the second throttle element, or any combination thereof.

[0021] In addition to one or more of the above features, or as an alternative, in another embodiment, the vehicle thermal management system includes: a cabin cooling and battery cooling mode, wherein the controller commands the opening of the first throttling element, the second throttling element, the first port and the second port of the first three-way valve, and the regulating valve, and closes the third port of the first three-way valve so that the first throttling element and the second throttling element play a throttling role, so that a first part of the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the first throttling element, the indoor heat exchanger, the regulating valve, and the air intake port of the compressor in sequence; and at the same time, a second part of the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the first one-way valve, the second throttling element, the intermediate heat exchanger, and the air intake port of the compressor in sequence; and

[0022] The controller commands to open the first port and the second port of the second three-way valve and close the third port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the second port of the second three-way valve, the intermediate heat exchanger and the inlet of the battery cooling device in sequence.

[0023] In addition to one or more of the above features, or as an alternative, in another embodiment, the vehicle thermal management system includes: a cabin heating and battery cooling mode, wherein the controller commands the opening of the second throttling element, the first port and the third port of the first three-way valve, and closes the first throttling element, the second port of the first three-way valve and the regulating valve to make the second throttling element play a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the third port of the first three-way valve, the indoor heat exchanger, the second one-way valve, the second throttling element, the intermediate heat exchanger and the suction port of the compressor in sequence; and

[0024] The controller commands to open the first port and the second port of the second three-way valve and close the third port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the second port of the second three-way valve, the intermediate heat exchanger and the inlet of the battery cooling device in sequence.

[0025] In addition to one or more of the above features, or as an alternative, in another embodiment, the vehicle thermal management system includes: a cabin cooling and battery natural cooling mode, wherein the controller commands the opening of the first throttling element, the first port and the second port of the first three-way valve, and the regulating valve, and closes the second throttling element and the third port of the first three-way valve to make the first throttling element play a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the first throttling element, the indoor heat exchanger, the regulating valve, and the suction port of the compressor in sequence; and

[0026] The controller commands to open the first port and the third port of the second three-way valve and close the second port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the third port of the second three-way valve, the second outdoor heat exchanger and the inlet of the battery cooling device in sequence.

[0027] To achieve at least one objective of the present invention, according to another aspect of the present invention, a transport refrigeration vehicle is provided, comprising the above-mentioned vehicle thermal management system.

[0028] It can be understood that the vehicle thermal management system according to the present invention can cool the vehicle battery when the air conditioning system is cooling, and can also cool the vehicle battery when the air conditioning system is heating, while also not affecting the independent cooling function of the vehicle battery, which is beneficial to ensure that the vehicle battery is always within a suitable temperature range during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In addition, similar numbers in the figures are used to represent similar components, among which:

[0030] Figure 1 A schematic structural diagram showing a first embodiment of a vehicle thermal management system according to the present invention; and

[0031] Figure 2 A schematic structural diagram of a second embodiment of a vehicle thermal management system according to the present invention is shown. DETAILED DESCRIPTION

[0032] The present invention will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. However, it should be understood that the present invention can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided here to make the disclosure of the present invention more complete and similar, and to fully convey the concept of the present invention to those skilled in the art.

[0033] See also Figure 1 , which presents an embodiment of a vehicle thermal management system. The vehicle thermal management system 100 includes an air conditioning system 110 and a battery cooling system 120. Taking a transport vehicle as an example, the air conditioning system 110 is mainly used to store goods or to cool or heat each compartment of the cab, while the battery cooling system 120 is mainly used to cool the vehicle battery.

[0034] Specifically, the air conditioning system 110 is provided with a compressor 111, a first three-way valve 112, a first outdoor heat exchanger 113, an indoor heat exchanger 114, a regulating valve 115, an intermediate heat exchanger 116, and a first throttling element 117, a second throttling element 118 and a third throttling element 119 with a cut-off function, which are connected by pipelines. The first three-way valve 112 has a first port 112a for communicating with the exhaust port 111a of the compressor 111, a second port 112b for communicating with the first end of the first outdoor heat exchanger 113, and a third port 112c for communicating with the first end of the indoor heat exchanger 114; the second end of the first outdoor heat exchanger 113 is connected to the first end of the indoor heat exchanger 114 via the first throttling element 117, and the second end of the first outdoor heat exchanger 113 is connected to the intake port 111b of the compressor 111 via the second throttling element 118 and the intermediate heat exchanger 116; the second end of the indoor heat exchanger 114 is connected to the intake port 111b of the compressor 111 via the regulating valve 115, and the second end of the indoor heat exchanger 114 is connected to the intake port 111b of the compressor 111 via the third throttling element 119 and the intermediate heat exchanger 116.

[0035] The battery cooling system 120 is provided with a second outdoor heat exchanger 121, a battery cooling device 122 and a second three-way valve 123 connected by pipelines, wherein the second three-way valve 123 has a first port 123a for communicating with the outlet 122a of the battery cooling device 122, a second port 123b for communicating with the intermediate heat exchanger 116 and a third port 123c for communicating with the first end of the second outdoor heat exchanger 121; the inlet 122b of the battery cooling device 122 and the second end of the second outdoor heat exchanger 121 are simultaneously connected to the intermediate heat exchanger 116.

[0036] In this arrangement of the vehicle thermal management system 100, heat exchange between the refrigerant of the air conditioning system 110 and the coolant of the battery cooling system 120 is achieved through the intermediate heat exchanger 116, so that the air conditioning system 110 can cool the vehicle battery while providing cooling and heating.

[0037] The following will introduce various possible modifications of the vehicle thermal management system in conjunction with the accompanying drawings. In addition, in order to further improve the energy efficiency or reliability of the system, some additional components may be added, which are also exemplarily explained below. For example, the regulating valve 115 is a stepless regulating valve. For another example, the vehicle thermal management system 100 further includes a controller (not shown), which communicates with the regulating valve 115, the first throttling element 117, the second throttling element 118, the third throttling element 119 or any combination thereof. For another example, the battery cooling system 120 is provided with a pumping device 124 for providing power for the coolant.

[0038] The vehicle thermal management system 100 can realize the cabin cooling and battery cooling modes. Figure 1 To give an exemplary illustration.

[0039] Continue to see Figure 1 Specifically, when the cabin cooling and battery cooling modes are executed, the controller commands the opening of the first throttling element 117, the second throttling element 118, the first port 112a and the second port 112b of the first three-way valve 112, and the regulating valve 115, and closes the third throttling element 119 and the third port 112c of the first three-way valve 112 so that the first throttling element 117 and the second throttling element 118 play a throttling role; and the controller commands the opening of the first port 123a and the second port 123b of the second three-way valve 123, and closes the third port 123c of the second three-way valve 123.

[0040] On the air conditioning system side, the refrigerant of the air conditioning system 110 first enters the compressor 111 to achieve gas phase compression, and then the first part of the refrigerant flows from the exhaust port 111a of the compressor 111 through the first port 112a of the first three-way valve 112 and the second port 112b of the first three-way valve 112 into the first outdoor heat exchanger 113 for condensation and heat dissipation. The refrigerant then flows through the first throttling element 117 and flows into the indoor heat exchanger 114, and can enter the indoor heat exchanger 114 to evaporate and absorb heat after throttling expansion in the first throttling element 117, thereby providing cooling for the vehicle cabin. When the refrigerant returns to the air intake port 111b of the compressor 111 after passing through the regulating valve 115, the cycle is completed.

[0041] At the same time, the second part of the refrigerant flows from the exhaust port 111a of the compressor 111 through the first port 112a of the first three-way valve 112 and the second port 112b of the first three-way valve 112 into the first outdoor heat exchanger 113 for condensation and heat dissipation. The refrigerant then flows through the second throttling element 118 into the intermediate heat exchanger 116, and can enter the intermediate heat exchanger 116 after throttling expansion in the second throttling element 118, thereby allowing the refrigerant to exchange heat with the coolant of the battery cooling system 120. After the refrigerant exchanges heat with the coolant of the battery cooling system 120, it returns to the suction port 111b of the compressor 111, thereby completing the cycle.

[0042] On the battery cooling system side, the coolant of the battery cooling system 120 flows from the outlet 122a of the battery cooling device 122 through the first port 123a of the second three-way valve 123 and the second port 123b of the second three-way valve 123 into the intermediate heat exchanger 116, thereby exchanging heat between the coolant and the refrigerant of the air conditioning system 110, further reducing the temperature of the coolant. Subsequently, the coolant that has undergone heat exchange returns to the inlet 122b of the battery cooling device 122, thereby cooling the battery cooling device 122, thereby completing the cycle.

[0043] It should be known that the first throttling element 117, the second throttling element 118 and the third throttling element 119 can all play the role of throttling expansion, but two of them can also be completely closed, and the opening of the other one can be adjusted to play the role of throttling expansion.

[0044] For example, the vehicle thermal management system 100 can also realize the cabin heating and battery cooling modes. Figure 1 To give an exemplary illustration.

[0045] Continue to see Figure 1 Specifically, when the cabin heating and battery cooling modes are executed, the controller commands the opening of the third throttling element 119, the first port 112a and the third port 112c of the first three-way valve 112, and the closing of the first throttling element 117, the second throttling element 118, the second port 112b of the first three-way valve 112 and the regulating valve 115 so that the third throttling element 119 plays a throttling role; and the controller commands the opening of the first port 123a and the second port 123b of the second three-way valve 123, and the closing of the third port 123c of the second three-way valve 123.

[0046] On the air conditioning system side, the refrigerant of the air conditioning system 110 first enters the compressor 111 to achieve gas phase compression, and then the refrigerant flows from the exhaust port 111a of the compressor 111 through the first port 112a of the first three-way valve 112 and the third port 112c of the first three-way valve 112 into the indoor heat exchanger 114 for condensation and heat dissipation, thereby providing heating for the vehicle compartment. The refrigerant then flows through the third throttling element 119 into the intermediate heat exchanger 116, and can enter the intermediate heat exchanger 116 after throttling expansion in the third throttling element 119, thereby allowing the refrigerant to exchange heat with the coolant of the battery cooling system 120. After the refrigerant exchanges heat with the coolant of the battery cooling system 120, it returns to the air intake port 111b of the compressor 111, thereby completing the cycle.

[0047] On the battery cooling system side, the coolant of the battery cooling system 120 flows from the outlet 122a of the battery cooling device 122 through the first port 123a of the second three-way valve 123 and the second port 123b of the second three-way valve 123 into the intermediate heat exchanger 116, thereby exchanging heat between the coolant and the refrigerant of the air conditioning system 110, further reducing the temperature of the coolant. Subsequently, the coolant that has undergone heat exchange returns to the inlet 122b of the battery cooling device 122, thereby cooling the battery cooling device 122, thereby completing the cycle.

[0048] For another example, the vehicle thermal management system 100 can also realize the cabin cooling and battery natural cooling modes. Figure 1 To give an exemplary illustration.

[0049] Continue to see Figure 1 Specifically, when the cabin cooling and battery natural cooling modes are executed, the controller commands the opening of the first throttling element 117, the first port 112a and the second port 112b of the first three-way valve 112, and the regulating valve 115, and closes the second throttling element 118, the third throttling element 119, and the third port 112c of the first three-way valve 112 so that the first throttling element 117 plays a throttling role; and the controller commands the opening of the first port 123a and the third port 123c of the second three-way valve 123, and the closing of the second port 123b of the second three-way valve 123.

[0050] On the air conditioning system side, the refrigerant of the air conditioning system 110 first enters the compressor 111 to achieve gas phase compression, and then the refrigerant flows from the exhaust port 111a of the compressor 111 through the first port 112a of the first three-way valve 112 and the second port 112b of the first three-way valve 112 into the first outdoor heat exchanger 113 for condensation and heat dissipation. The refrigerant then flows through the first throttling element 117 and flows into the indoor heat exchanger 114, and can enter the indoor heat exchanger 114 to evaporate and absorb heat after throttling expansion in the first throttling element 117, thereby providing cooling for the vehicle compartment. When the refrigerant returns to the air intake port 111b of the compressor 111 after passing through the regulating valve 115, the cycle is completed.

[0051] On the battery cooling system side, the coolant of the battery cooling system 120 flows from the outlet 122a of the battery cooling device 122 through the first port 123a of the second three-way valve 123 and the third port 123c of the second three-way valve 123 into the second outdoor heat exchanger 121, thereby exchanging heat between the coolant and the air through air cooling and other methods, further reducing the temperature of the coolant. Subsequently, the coolant that has undergone heat exchange returns to the inlet 122b of the battery cooling device 122, thereby cooling the battery cooling device 122, thereby completing the cycle.

[0052] See also Figure 2 , which presents another embodiment of a vehicle thermal management system. The vehicle thermal management system 200 includes an air conditioning system 210 and a battery cooling system 220. Figure 2 The functions and principles of the air conditioning system 210 and the battery cooling system 220 in the illustrated embodiment may refer to the aforementioned embodiments and will not be described in detail herein.

[0053] Specifically, the air conditioning system 210 is provided with a compressor 211, a first three-way valve 212, a first outdoor heat exchanger 213, an indoor heat exchanger 214, a regulating valve 215, an intermediate heat exchanger 216, a first throttling element 217 and a second throttling element 218 with a cut-off function, a first one-way valve 219A and a second one-way valve 219B connected by pipelines. The first three-way valve 212 has a first port 212a for communicating with the exhaust port 211a of the compressor 211, a second port 212b for communicating with the first end of the first outdoor heat exchanger 213, and a third port 212c for communicating with the first end of the indoor heat exchanger 214; the second end of the first outdoor heat exchanger 213 is connected to the first end of the indoor heat exchanger 214 via the first throttling element 217, and the second end of the first outdoor heat exchanger 213 is connected to the suction port 211b of the compressor 211 via the first one-way valve 219A, the second throttling element 218 and the intermediate heat exchanger 216; the second end of the indoor heat exchanger 214 is connected to the suction port 211b of the compressor 211 via the regulating valve 215, and the second end of the indoor heat exchanger 214 is connected to the suction port 211b of the compressor 211 via the second one-way valve 219B, the second throttling element 218 and the intermediate heat exchanger 216.

[0054] The battery cooling system 220 is provided with a second outdoor heat exchanger 221, a battery cooling device 222 and a second three-way valve 223 connected by pipelines, wherein the second three-way valve 223 has a first port 223a for communicating with the outlet 222a of the battery cooling device 222, a second port 223b for communicating with the intermediate heat exchanger 216 and a third port 223c for communicating with the first end of the second outdoor heat exchanger 221; the inlet 222b of the battery cooling device 222 and the second end of the second outdoor heat exchanger 221 are simultaneously connected to the intermediate heat exchanger 216.

[0055] In this arrangement of the vehicle thermal management system 200, heat exchange between the refrigerant of the air conditioning system 210 and the coolant of the battery cooling system 220 is achieved through the intermediate heat exchanger 216, so that the air conditioning system 210 can cool the vehicle battery while providing cooling and heating.

[0056] The following will introduce various possible modifications of the vehicle thermal management system in conjunction with the accompanying drawings. In addition, in order to further improve the energy efficiency or reliability of the system, some additional components may be added, as shown below. For example, the regulating valve 215 is a stepless regulating valve. For another example, the vehicle thermal management system 200 further includes a controller (not shown), which communicates with the regulating valve 215, the first throttling element 217, the second throttling element 218 or any combination thereof. For another example, the battery cooling system 220 is provided with a pumping device 224 for providing power for the coolant.

[0057] The vehicle thermal management system 200 can realize the cabin cooling and battery cooling modes. Figure 2 To give an exemplary illustration.

[0058] Continue to see Figure 2 Specifically, when the cabin cooling and battery cooling modes are executed, the controller commands the opening of the first throttling element 217, the second throttling element 218, the first port 212a and the second port 212b of the first three-way valve 212, and the regulating valve 215, and closes the third port 212c of the first three-way valve 212 so that the first throttling element 217 and the second throttling element 218 play a throttling role; and the controller commands the opening of the first port 223a and the second port 223b of the second three-way valve 223, and closes the third port 223c of the second three-way valve 223.

[0059] On the air conditioning system side, the refrigerant of the air conditioning system 210 first enters the compressor 211 to achieve gas phase compression, and then the first part of the refrigerant flows from the exhaust port 211a of the compressor 211 through the first port 212a of the first three-way valve 212 and the second port 212b of the first three-way valve 212 into the first outdoor heat exchanger 213 for condensation and heat dissipation. The refrigerant then flows through the first throttling element 217 and flows into the indoor heat exchanger 214, and can enter the indoor heat exchanger 214 to evaporate and absorb heat after throttling expansion in the first throttling element 217, thereby providing cooling for the vehicle cabin. When the refrigerant returns to the air intake port 211b of the compressor 211 after passing through the regulating valve 215, the cycle is completed.

[0060] At the same time, the second part of the refrigerant flows from the exhaust port 211a of the compressor 211 through the first port 212a of the first three-way valve 212 and the second port 212b of the first three-way valve 212 into the first outdoor heat exchanger 213 for condensation and heat dissipation. The refrigerant then flows through the first check valve 219A into the second throttling element 218, and can enter the intermediate heat exchanger 216 after throttling expansion in the second throttling element 218, thereby allowing the refrigerant to exchange heat with the coolant of the battery cooling system 220. After the refrigerant exchanges heat with the coolant of the battery cooling system 220, it returns to the suction port 211b of the compressor 211, thereby completing the cycle.

[0061] On the battery cooling system side, the coolant of the battery cooling system 220 flows from the outlet 222a of the battery cooling device 222 through the first port 223a of the second three-way valve 223 and the second port 223b of the second three-way valve 223 into the intermediate heat exchanger 216, thereby exchanging heat between the coolant and the refrigerant of the air conditioning system 210, further reducing the temperature of the coolant. Subsequently, the coolant that has undergone heat exchange returns to the inlet 222b of the battery cooling device 222, thereby cooling the battery cooling device 222, thereby completing the cycle.

[0062] It should be known that both the first throttling element 217 and the second throttling element 218 can play the role of throttling expansion, but one of them can also be completely closed, and the other one can be adjusted to play the role of throttling expansion.

[0063] For example, the vehicle thermal management system 200 can also realize the cabin heating and battery cooling modes. Figure 2 To give an exemplary illustration.

[0064] Continue to see Figure 2 Specifically, when the cabin heating and battery cooling modes are executed, the controller commands the opening of the second throttling element 218, the first port 212a and the third port 212c of the first three-way valve 212, and the closing of the first throttling element 217, the second port 212b of the first three-way valve 212 and the regulating valve 215 so that the second throttling element 218 plays a throttling role; and the controller commands the opening of the first port 223a and the second port 223b of the second three-way valve 223, and the closing of the third port 223c of the second three-way valve 223.

[0065] On the air conditioning system side, the refrigerant of the air conditioning system 210 first enters the compressor 211 to achieve gas phase compression, and then the refrigerant flows from the exhaust port 211a of the compressor 211 through the first port 212a of the first three-way valve 212 and the third port 212c of the first three-way valve 212 into the indoor heat exchanger 214 for condensation and heat dissipation, thereby providing heating for the vehicle compartment. The refrigerant then flows through the second one-way valve 219B and the second throttling element 218 into the intermediate heat exchanger 216, and can enter the intermediate heat exchanger 216 after throttling expansion occurs in the second throttling element 218, thereby allowing the refrigerant to exchange heat with the coolant of the battery cooling system 220. After the refrigerant exchanges heat with the coolant of the battery cooling system 220, it returns to the air intake port 211b of the compressor 211, thereby completing the cycle.

[0066] On the battery cooling system side, the coolant of the battery cooling system 220 flows from the outlet 222a of the battery cooling device 222 through the first port 223a of the second three-way valve 223 and the second port 223b of the second three-way valve 223 into the intermediate heat exchanger 216, thereby exchanging heat between the coolant and the refrigerant of the air conditioning system 210, further reducing the temperature of the coolant. Subsequently, the coolant that has undergone heat exchange returns to the inlet 222b of the battery cooling device 222, thereby cooling the battery cooling device 222, thereby completing the cycle.

[0067] For another example, the vehicle thermal management system 200 can also realize the cabin cooling and battery natural cooling mode. Figure 2 To give an exemplary illustration.

[0068] Continue to see Figure 2 Specifically, when the cabin cooling and battery natural cooling modes are executed, the controller commands the opening of the first throttling element 217, the first port 212a and the second port 212b of the first three-way valve 212, and the regulating valve 215, and closes the second throttling element 218 and the third port 212c of the first three-way valve 212 so that the first throttling element 217 plays a throttling role; and the controller commands the opening of the first port 223a and the third port 223c of the second three-way valve 223, and the closing of the second port 223b of the second three-way valve 223.

[0069] On the air conditioning system side, the refrigerant of the air conditioning system 210 first enters the compressor 211 to achieve gas phase compression, and then the refrigerant flows from the exhaust port 211a of the compressor 211 through the first port 212a of the first three-way valve 212 and the second port 212b of the first three-way valve 212 into the first outdoor heat exchanger 213 for condensation and heat dissipation. The refrigerant then flows through the first throttling element 217 and flows into the indoor heat exchanger 214, and can enter the indoor heat exchanger 214 to evaporate and absorb heat after throttling expansion in the first throttling element 217, thereby providing cooling for the vehicle compartment. When the refrigerant returns to the air intake port 211b of the compressor 211 after passing through the regulating valve 215, the cycle is completed.

[0070] On the battery cooling system side, the coolant of the battery cooling system 220 flows from the outlet 222a of the battery cooling device 222 through the first port 223a of the second three-way valve 223 and the third port 223c of the second three-way valve 223 into the second outdoor heat exchanger 221, thereby exchanging heat between the coolant and the air through air cooling and other methods, further reducing the temperature of the coolant. Subsequently, the coolant that has undergone heat exchange returns to the inlet 222b of the battery cooling device 222, thereby cooling the battery cooling device 222, thereby completing the cycle.

[0071] In addition, although not shown in the figure, an embodiment of a transport refrigeration vehicle is also provided herein. The transport refrigeration vehicle may be a new energy electric vehicle or a hybrid electric vehicle, and includes the vehicle thermal management system in any of the aforementioned embodiments or a combination thereof, and accordingly also has its technical effects, which will not be described in detail herein.

[0072] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly defined and specified, the terms "connection", "communication" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] The above examples mainly illustrate the vehicle thermal management system and transport refrigeration vehicle of the present invention. Although only some of the embodiments of the present invention are described, it should be understood by those skilled in the art that the present invention can be implemented in many other forms without departing from its spirit and scope. Therefore, the examples and embodiments shown are regarded as illustrative rather than restrictive, and the present invention may cover various modifications and substitutions without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A vehicle thermal management system, characterized in that: include: An air conditioning system, which is provided with a compressor, a first three-way valve, a first outdoor heat exchanger, an indoor heat exchanger, a regulating valve, an intermediate heat exchanger, and a first throttling element, a second throttling element, and a third throttling element having a cut-off function, connected by pipelines, wherein the first three-way valve has a first port for communicating with the exhaust port of the compressor, a second port for communicating with the first end of the first outdoor heat exchanger, and a third port for communicating with the first end of the indoor heat exchanger; the second end of the first outdoor heat exchanger is connected to the first end of the indoor heat exchanger via the first throttling element, and the second end of the first outdoor heat exchanger is connected to the suction port of the compressor via the second throttling element and the intermediate heat exchanger; the second end of the indoor heat exchanger is connected to the suction port of the compressor via the regulating valve, and the second end of the indoor heat exchanger is connected to the suction port of the compressor via the third throttling element and the intermediate heat exchanger; and A battery cooling system is provided with a second outdoor heat exchanger, a battery cooling device and a second three-way valve connected by pipelines, wherein the second three-way valve has a first port for communicating with the outlet of the battery cooling device, a second port for communicating with the intermediate heat exchanger and a third port for communicating with the first end of the second outdoor heat exchanger; the inlet of the battery cooling device and the second end of the second outdoor heat exchanger are simultaneously connected to the intermediate heat exchanger.

2. The vehicle thermal management system according to claim 1, characterized in that: The regulating valve is a stepless regulating valve.

3. The vehicle thermal management system according to claim 2, characterized in that: A controller is included that communicates with the regulating valve, the first throttling element, the second throttling element, the third throttling element, or any combination thereof.

4. The vehicle thermal management system according to claim 3, characterized in that: include: A cabin cooling and battery cooling mode, wherein the controller commands the opening of the first throttling element, the second throttling element, the first port and the second port of the first three-way valve, and the regulating valve, and closes the third throttling element and the third port of the first three-way valve so that the first throttling element and the second throttling element play a throttling role, so that a first part of the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the first throttling element, the indoor heat exchanger, the regulating valve, and the air intake port of the compressor in sequence; and at the same time, a second part of the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the second throttling element, the intermediate heat exchanger, and the air intake port of the compressor in sequence; and The controller commands to open the first port and the second port of the second three-way valve and close the third port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the second port of the second three-way valve, the intermediate heat exchanger and the inlet of the battery cooling device in sequence.

5. The vehicle thermal management system according to claim 3, characterized in that: include: a cabin heating and battery cooling mode, wherein the controller commands the opening of the third throttling element, the first port and the third port of the first three-way valve, and the closing of the first throttling element, the second throttling element, the second port of the first three-way valve, and the regulating valve so that the third throttling element plays a throttling role, so that the refrigerant of the air conditioning system flows sequentially through the exhaust port of the compressor, the first port of the first three-way valve, the third port of the first three-way valve, the indoor heat exchanger, the third throttling element, the intermediate heat exchanger, and the suction port of the compressor; and The controller commands to open the first port and the second port of the second three-way valve and close the third port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the second port of the second three-way valve, the intermediate heat exchanger and the inlet of the battery cooling device in sequence.

6. The vehicle thermal management system according to claim 3, characterized in that: include: a cabin cooling and battery natural cooling mode, wherein the controller commands the opening of the first throttling element, the first port and the second port of the first three-way valve, and the regulating valve, and closes the second throttling element, the third throttling element, and the third port of the first three-way valve so that the first throttling element plays a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the first throttling element, the indoor heat exchanger, the regulating valve, and the air intake port of the compressor in sequence; and The controller commands to open the first port and the third port of the second three-way valve and close the second port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the third port of the second three-way valve, the second outdoor heat exchanger and the inlet of the battery cooling device in sequence.

7. A vehicle thermal management system, characterized in that: include: An air conditioning system, which is provided with a compressor, a first three-way valve, a first outdoor heat exchanger, an indoor heat exchanger, a regulating valve, an intermediate heat exchanger, a first non-return valve, a second non-return valve, and a first throttling element and a second throttling element having a cut-off function, which are connected by pipelines, wherein the first three-way valve has a first port for communicating with the exhaust port of the compressor, a second port for communicating with the first end of the first outdoor heat exchanger, and a third port for communicating with the first end of the indoor heat exchanger; the second end of the first outdoor heat exchanger is connected to the first end of the indoor heat exchanger via the first throttling element, and the second end of the first outdoor heat exchanger is connected to the suction port of the compressor via the first non-return valve, the second throttling element and the intermediate heat exchanger; the second end of the indoor heat exchanger is connected to the suction port of the compressor via the regulating valve, and the second end of the indoor heat exchanger is connected to the suction port of the compressor via the second non-return valve, the second throttling element and the intermediate heat exchanger; and A battery cooling system is provided with a second outdoor heat exchanger, a battery cooling device and a second three-way valve connected by pipelines, wherein the second three-way valve has a first port for communicating with the outlet of the battery cooling device, a second port for communicating with the intermediate heat exchanger and a third port for communicating with the first end of the second outdoor heat exchanger; the inlet of the battery cooling device and the second end of the second outdoor heat exchanger are simultaneously connected to the intermediate heat exchanger.

8. The vehicle thermal management system according to claim 7, characterized in that: The regulating valve is a stepless regulating valve.

9. The vehicle thermal management system according to claim 8, characterized in that: A controller is included that communicates with the regulating valve, the first throttling element, the second throttling element, or any combination thereof.

10. The vehicle thermal management system according to claim 9, characterized in that: include: A cabin cooling and battery cooling mode, wherein the controller commands the opening of the first throttling element, the second throttling element, the first port and the second port of the first three-way valve, and the regulating valve, and closes the third port of the first three-way valve so that the first throttling element and the second throttling element play a throttling role, so that a first part of the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the first throttling element, the indoor heat exchanger, the regulating valve, and the air intake port of the compressor in sequence; and at the same time, a second part of the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the first one-way valve, the second throttling element, the intermediate heat exchanger, and the air intake port of the compressor in sequence; and The controller commands to open the first port and the second port of the second three-way valve and close the third port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the second port of the second three-way valve, the intermediate heat exchanger and the inlet of the battery cooling device in sequence.

11. The vehicle thermal management system according to claim 9, characterized in that: include: a cabin heating and battery cooling mode, wherein the controller commands the opening of the second throttling element, the first port and the third port of the first three-way valve, and closes the first throttling element, the second port of the first three-way valve, and the regulating valve to make the second throttling element play a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the third port of the first three-way valve, the indoor heat exchanger, the second one-way valve, the second throttling element, the intermediate heat exchanger, and the suction port of the compressor in sequence; and The controller commands to open the first port and the second port of the second three-way valve and close the third port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the second port of the second three-way valve, the intermediate heat exchanger and the inlet of the battery cooling device in sequence.

12. The vehicle thermal management system according to claim 9, characterized in that: include: a cabin cooling and battery natural cooling mode, wherein the controller commands the opening of the first throttling element, the first port and the second port of the first three-way valve, and the regulating valve, and closes the second throttling element and the third port of the first three-way valve so that the first throttling element plays a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the first three-way valve, the second port of the first three-way valve, the first outdoor heat exchanger, the first throttling element, the indoor heat exchanger, the regulating valve, and the air intake port of the compressor in sequence; and The controller commands to open the first port and the third port of the second three-way valve and close the second port of the second three-way valve, so that the coolant of the battery cooling system flows through the outlet of the battery cooling device, the first port of the second three-way valve, the third port of the second three-way valve, the second outdoor heat exchanger and the inlet of the battery cooling device in sequence.

13. A transport refrigeration vehicle, characterized in that: include: A vehicle thermal management system according to any one of claims 1 to 12.

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