Heat exchanger and thermal management system

Abstract

The application discloses a heat exchange device and a heat management system. The heat exchange device comprises a throttling assembly, a gas-liquid separation assembly, a first connecting block and a heat exchange assembly. The throttling assembly is connected with the gas-liquid separation assembly through the first connecting block, and the gas-liquid separation assembly is fixedly connected with the heat exchange assembly. The first connecting block comprises a flow-through cavity. The throttling assembly has a first port. The gas-liquid separation assembly comprises a shell which is an integral structure with the first connecting block. The gas-liquid separation assembly has a first inlet, a first outlet and a second outlet. The communication channel of the heat exchange assembly has a first port and a second port. The first port can be communicated with the first inlet through the flow-through cavity of the first connecting block. The first outlet is communicated with the first port. The second outlet is communicated with the second port. The heat exchange device has a first connecting port. The first connecting port is located at one of the first connecting block and the throttling assembly. In this way, the structure of the heat exchange device is relatively simple and compact, and the integration degree of the heat exchange device can be improved.

Description

Technical Field

[0001] This invention relates to the field of fluid control, and more specifically to a heat exchange device and a thermal management system. Background Technology

[0002] Electric or hybrid vehicles generate a lot of heat during vehicle operation. Increased battery temperature is detrimental to battery use and can easily reduce battery life. Therefore, heat exchange devices are installed in the system to cool the battery.

[0003] Typically, the components of a heat exchanger are connected by pipes, which results in a large number of pipes, a relatively large and complex structure, and a low degree of integration. Summary of the Invention

[0004] The purpose of this invention is to provide a heat exchange device and a thermal management system. The heat exchange device has a relatively simple and compact structure, which can improve the integration level of the heat exchange device.

[0005] On one hand, embodiments of the present invention provide a heat exchange device, including a throttling component, a gas-liquid separation component, a first connecting block, and a heat exchange component. The throttling component is connected to the gas-liquid separation component via the first connecting block, and the gas-liquid separation component is fixedly connected to the heat exchange component. The first connecting block has a flow cavity, the throttling component has a first port, the gas-liquid separation component includes a shell, the shell and the first connecting block are integrally formed, the gas-liquid separation component has a first inlet, a first outlet, and a second outlet, the first inlet, the first outlet, and the second outlet communicate with the flow cavity, a liquid working medium can leave the inner cavity of the gas-liquid separation component from the first outlet, and a gaseous working medium can leave the inner cavity of the gas-liquid separation component from the second outlet. The heat exchange component has a communicating channel, the communicating channel has a first port and a second port, the first port can communicate with the first inlet through the flow cavity of the first connecting block, the first outlet communicates with the first port, and the second outlet communicates with the second port. The heat exchange device has a first connecting port that allows the working medium to flow into the heat exchange device, the first connecting port being located in either the first connecting block or the throttling component.

[0006] On the other hand, embodiments of the present invention provide a thermal management system, including a compressor, a condenser, and the heat exchange device described above. The outlet of the compressor is connected to the inlet of the condenser, the outlet of the condenser is connected to the first connection port of the heat exchange device, and the second outlet of the gas-liquid separation component and the second port of the heat exchange component are respectively connected to the inlet of the compressor.

[0007] According to the heat exchange device and thermal management system provided in the embodiments of the present invention, the heat exchange device includes a throttling component, a gas-liquid separation component, a first connecting block, and a heat exchange component. Both the throttling component and the gas-liquid separation component are connected to the first connecting block. The gas-liquid separation component is connected to the heat exchange component, and the first inlet of the gas-liquid separation component can communicate with the first outlet of the throttling component through the flow cavity of the first connecting block. The first connection port of the heat exchange device is located on one of the first connecting block and the throttling component, allowing the working medium entering the heat exchange device to flow through the first connection port, the first outlet, and the flow cavity of the first connecting block into the first inlet of the gas-liquid separation component, and then into the heat exchange component from the first outlet of the gas-liquid separation component. This allows the heat exchange component to exchange heat with heat sources such as batteries. This relatively reduces the number of pipelines between the gas-liquid separation component, the throttling component, and the heat exchange component, simplifying the heat exchange device and improving its integration level. Attached Figure Description

[0008] Figure 1 This is a schematic block diagram of the connection of a thermal management system provided in one embodiment of the present invention;

[0009] Figure 2 This is a schematic diagram of the heat exchange device provided in the first embodiment of the present invention from a first perspective;

[0010] Figure 3 This is a schematic diagram of the heat exchange device provided in the first embodiment of the present invention from a second perspective;

[0011] Figure 4 This is a partial cross-sectional schematic diagram of the heat exchange device provided in the first embodiment of the present invention;

[0012] Figure 5 This is a schematic diagram of the assembly structure of the throttling component, the gas-liquid separation component, and the first connecting block provided in the first embodiment of the present invention;

[0013] Figure 6 This is a cross-sectional schematic diagram of the assembly structure of the throttling component, the gas-liquid separation component, and the first connecting block provided in the first embodiment of the present invention;

[0014] Figure 7 This is a cross-sectional schematic diagram of the housing and the first connecting block of the gas-liquid separation component provided in the first embodiment of the present invention;

[0015] Figure 8 This is a schematic diagram of the assembly structure of the throttling component, the gas-liquid separation component, and the first connecting block provided in the second embodiment of the present invention;

[0016] Figure 9 This is a schematic diagram of the assembly structure of the throttling component, the gas-liquid separation component, and the first connecting block provided in the third embodiment of the present invention;

[0017] Figure 10 This is a cross-sectional schematic diagram of the assembly structure of the throttling component, the gas-liquid separation component, and the first connecting block provided in the third embodiment of the present invention;

[0018] Figure 11 This is a cross-sectional schematic diagram of the heat exchange device provided in the second embodiment of the present invention;

[0019] Figure 12 yes Figure 11 A schematic diagram of the third connecting block from a first-view perspective;

[0020] Figure 13 yes Figure 11 A schematic diagram of the third connecting block from a second-view perspective;

[0021] Figure 14 This is a partial structural schematic diagram of the heat exchange device provided in the first embodiment of the present invention from a third perspective;

[0022] Figure 15 yes Figure 14 A schematic diagram of the cross-section at point AA. Detailed Implementation

[0023] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1This invention provides a thermal management system 1, including a compressor 201, a condenser 202, and a heat exchange device 100. The heat exchange device 100 includes a throttling component 10, a gas-liquid separation component 20, and a heat exchange assembly 70. The throttling component 10 can throttle the working medium entering the heat exchange device 100 so that the working medium exiting the throttling component 10 is in a gas-liquid two-phase state. The gas-liquid separation component 20 can separate the gas-liquid two-phase working medium entering the gas-liquid separation component 20 into a gas phase working medium and a liquid phase working medium. The working medium enters the heat exchange assembly 70 to exchange heat with heat sources such as batteries. The heat exchange device 100 has a first connection port E1 and a second connection port E2. The working medium can flow into the heat exchange device 100 through the first connection port E1 and exit through the second connection port E2. The outlet of the compressor 201 is connected to the inlet of the condenser 202, the outlet of the condenser 202 is connected to the first connection port E1 of the heat exchange device 100, and the second connection port E2 of the heat exchange device 100 is connected to the inlet of the compressor 201. Through the thermal management system 1 of this embodiment, the working medium such as refrigerant can circulate in the thermal management system 1 and cool heat sources such as batteries through the heat exchange device 100. The heat source can be a battery in an electric vehicle, and the working medium can be a refrigerant. In the following description, the heat source is described as a battery and the working medium is described as a refrigerant.

[0025] When the thermal management system 1 of the present invention is in battery cooling mode, the compressor 201 can compress the refrigerant into a superheated gaseous refrigerant with high temperature and high pressure, and discharge the high temperature and high pressure gaseous refrigerant into the condenser 202. The condenser 202 cools the superheated gaseous refrigerant gas compressed in the compressor 201 by releasing heat to the outside atmosphere, thereby condensing (liquefying). The liquefied refrigerant flows to the throttling component 10, which causes the high pressure liquid refrigerant to expand. At this time, the refrigerant is in the gas-liquid two-phase region. The gas-liquid two-phase refrigerant discharged from the throttling component 10 enters the gas-liquid separation component 20, where the gaseous refrigerant and liquid refrigerant are separated. The gaseous refrigerant flows to the compressor, and the liquid refrigerant flows to the heat exchange component 70. After heat exchange with the heat source in the heat exchange component 70, the liquid refrigerant flows out of the heat exchange component 70 and flows to the compressor. Optionally, the heat exchange assembly 70 can be a direct-cooling plate, which is in direct or indirect contact with a heat source such as a battery to cool the heat source. Optionally, the condenser 202 can include a channel for refrigerant flow and heat sinks, which can enhance heat exchange between the refrigerant and the air surrounding the condenser 202. The refrigerant discharged from the heat exchange assembly 70 can enter the compressor 201 to circulate the refrigerant in the thermal management system.

[0026] When the thermal management system 1 of this embodiment is applied to a vehicle, the thermal management system 1 may further include an air conditioning heat exchanger 204 and a regulating valve 203. The air conditioning heat exchanger 204 can cool or heat the passenger compartment. The refrigerant passage formed by the regulating valve 203 and the air conditioning heat exchanger 204 is connected in parallel with the refrigerant passage formed by the heat exchange device 100. That is, the working medium discharged from the outlet of the condenser 202 is divided into two paths, one of which flows into the refrigerant passage formed by the heat exchange device 100, and the other flows into the refrigerant passage formed by the air conditioning heat exchanger 204 and the regulating valve 203. Figure 1 The thermal management system 1 shown can achieve cooling of the battery by the heat exchange device 100 and cooling of the passenger cabin by the air conditioning heat exchanger 204.

[0027] To simplify the structure of the thermal management system 1 and improve its integration level, such as... Figures 2 to 10 This invention provides a heat exchange device 100, which includes a throttling component 10, a gas-liquid separation component 20, a first connecting block 30, and a heat exchange component 70. Both the throttling component 10 and the gas-liquid separation component 20 are connected to the first connecting block 30. The throttling component 10 can be connected to the gas-liquid separation component 20 via the first connecting block 30. The gas-liquid separation component 20 is fixedly connected to the heat exchange component 70. The gas-liquid separation component 20 includes a housing 21, and the first connecting block 30 and the housing 21 are integrally formed. In specific implementations, the housing 21 of the gas-liquid separation component 20 can be integrally formed with the first connecting block 30 or fixedly connected as an integral structure by welding or other methods. The gas-liquid separation component 20 can be fixedly and sealed to the heat exchange component 70. Specifically, when the first connecting block 30 is integrally formed with the housing 21, both the first connecting block 30 and the housing 21 of the gas-liquid separation component 20 can be fixedly connected to the heat exchange component 70. When the first connecting block 30 and the housing 21 are fixedly connected as an integral structure by welding or other means, the housing 21 of the gas-liquid separation component 20 is fixedly connected to the heat exchange component 70, or both the first connecting block 30 and the housing 21 are fixedly connected to the heat exchange component 70. To achieve a seal between the heat exchange component 70 and the gas-liquid separation component 20, the heat exchange component 70 can be fixed to the housing 21 of the gas-liquid separation component 20 by brazing, or a sealing gasket can be provided on both the heat exchange component 70 and the gas-liquid separation component 20, and the two can be assembled and fixed by fasteners.

[0028] like Figures 4 to 10The first connecting block 30 includes a flow cavity in which the working medium can flow. The throttling component 10 includes a first inlet 11, and the gas-liquid separation component 20 includes a first inlet 22, a first outlet 23, and a second outlet 24. The first inlet 22, the first outlet 23, and the second outlet 24 are connected to the flow cavity of the first connecting block 30. The gas-liquid two-phase working medium discharged from the throttling component 10 enters the inner cavity of the gas-liquid separation component through the first inlet 22, the liquid phase working medium leaves the inner cavity of the gas-liquid separation component through the first outlet 23, and the gas phase working medium leaves the inner cavity of the gas-liquid separation component through the second outlet 24. In specific implementations, the first inlet 22, the first outlet 23, and the second outlet 24 can be located on the housing 21 of the gas-liquid separation component 20, or they can be located on a structural component assembled with the housing 21. This invention does not limit this. The heat exchange assembly 70 has a communication channel with a first port E3 and a second port E4. The first connecting block 30 includes a second cavity 32. The first port 11 of the throttling assembly 10 can communicate with the first inlet 22 through the second cavity 32 of the first connecting block 30, so that the working medium flowing out of the first port 11 of the throttling assembly 10 can flow into the inner cavity of the gas-liquid separation assembly 20 through the first inlet 22. The first outlet 23 of the gas-liquid separation assembly 20 is connected to the first port E3 of the heat exchange assembly 70, so that the liquid working medium discharged from the first outlet 23 can enter the interior of the heat exchange assembly 70 through the first port E3. The second outlet 24 and the second port E4 of the gas-liquid separation assembly 20 are both connected to the inlet of the compressor 201. Of course, the working medium passing through the second outlet 24 and the working medium passing through the second port E4 can also merge and communicate with the inlet of the compressor 201, so that the gaseous working medium discharged from the second outlet 24 of the gas-liquid separation assembly 20 and the working medium discharged from the second port E4 of the heat exchange device 100 can merge and flow into the compressor 201. To further reduce the piping in the heat exchanger 100 and improve the integration of the heat exchanger 100, the first connection port E1 may optionally be located in either the first connection block 30 or the throttling component 10.

[0029] like Figure 2 , Figure 6 and Figure 7As shown, in some embodiments, the first connection port E1 is located in the first connecting block 30. The first connecting block 30 has a first cavity 31, a second cavity 32, and a mounting cavity 33. One end of the first cavity 31 is formed with the first connection port E1, or the first cavity 31 communicates with the first connection port E1. The first cavity 31 communicates with the mounting cavity 33, and the extending direction of the first cavity 31 intersects with the extending direction of the mounting cavity 33. The first cavity 31 and the mounting cavity 33 intersect at a connection port, which communicates with the first port 11 of the throttling component 10. At least a portion of the throttling component 10 is located in the mounting cavity 33. The second cavity 32 of the first connecting block 30 communicates with the first inlet 22 of the gas-liquid separation component 20. In a set mode, the first cavity 31 can communicate with one end of the second cavity 32 through the first port 11, and the other end of the second cavity 32 communicates with the first inlet 22 of the gas-liquid separation component 20. At this time, the flow cavity of the first connecting block 30 includes the second cavity 32 and may also include the first cavity 31. Figure 6 The housing 21 of the gas-liquid separation component 20 can be integrally formed with the first connecting block 30. In this case, the housing 21 is part of the first connecting block 30, or the first connecting block 30 is part of the housing 21; or the housing 21 can be fixedly connected with the first connecting block 30 to form an integral structure by welding process. The housing 21 has a receiving cavity 27, and the first inlet 22 communicates with the receiving cavity 27. In this case, part of the outer surface of the first connecting block 30 forms the wall of the receiving cavity 27.

[0030] Based on this, when the working medium is discharged from the outlet of the condenser 202, it enters the first cavity 31 of the first connecting block 30 through the first connection port E1, and then enters the second cavity 32 through the connection port between the first cavity 31 and the mounting cavity 33 and the first port 11. After that, it flows through the second cavity 32 to the first inlet 22 of the gas-liquid separation component 20. This eliminates the need for the pipeline between the gas-liquid separation component 20 and the throttling component 10, thereby making the structure of the heat exchange device 100 simple and compact and improving the integration level of the heat exchange device 100.

[0031] Further reading Figure 6 and Figure 7The throttling assembly 10 includes a throttling valve, which includes a first valve core 12. At least a portion of the first valve core 12 is located within the mounting cavity 33 of the first connecting block 30, in which case the first connecting block 30 can serve as the valve body of the throttling valve. Alternatively, the throttling valve may also include a valve body, with at least a portion of the first valve core 12 located within the valve body. To facilitate a fixed and sealed connection between the throttling valve and the first connecting block 30, one side of the mounting cavity 33 of the first connecting block 30 may include a first socket end. The throttling valve has a first insert that matches the first socket end. The first insert and the first socket end can be nested together to achieve a sealed connection between the first connecting block 30 and the throttling valve. Alternatively, the first connecting block 30 includes a first insert, and the throttling valve has a first socket end that matches the first insert. The throttling valve and the first connecting block 30 are connected and sealed through the nested engagement of the first insert and the first socket end. See also Figure 6 The throttle valve also includes a drive unit 13, which enables the first valve core 12 to move toward or away from the first port 11, thereby throttling the fluid entering the second chamber 32. Specifically, the first valve core 12 includes a valve needle 121, a nut assembly, and a lead screw. The threads on the nut assembly engage with the threads on the lead screw. During the rotation of the lead screw driven by the drive unit 13, a linear displacement is generated between the nut assembly and the lead screw, which in turn causes the nut assembly to drive the valve needle 121 to move toward or away from the first port 11. During the process of the first valve core 12 moving toward or away from the first port 11, the flow cross-sectional area of ​​the fluid at the first port 11 changes, thereby creating throttling at the first port 11, that is, the opening degree of the first port 11 changes, thus throttling at the first port 11. Optionally, this throttle valve can be an electronic expansion valve (EXV).

[0032] like Figure 9 and Figure 10 As shown, in order to achieve the throttling effect of the throttling assembly 10, in some embodiments, the throttling assembly 10 includes a throttling tube 14. Along the extending direction of the throttling tube 14, the inner diameter of the throttling tube 14 varies. A first connection port E1 is formed on the throttling tube 14 and located at one end of the throttling tube 14. A first port 11 is located within the inner cavity of the throttling tube 14. Optionally, the first port 11 can be located at the other end of the throttling tube 14. For example... Figure 9 and Figure 10 The throttling tube 14 can be a capillary tube, and it can be spiral or other shapes. When the throttling assembly 10 includes the throttling tube 14, the working medium flowing through the throttling assembly 10 can be throttled by changing the diameter of the inner cavity of the throttling tube 14. Figure 10In the process, the first connecting block 30 has an inner cavity, and the housing 21 of the gas-liquid separation component 20 has a conductive cavity 211. The conductive cavity 211 can be located on the side wall of the housing 21. The conductive cavity 211 communicates with the inner cavity of the first connecting block 30. One end of the conductive cavity 211 forms a first inlet 22 or one end of the conductive cavity 211 communicates with the first inlet 22.

[0033] Please refer to further information. Figure 6 and Figure 10 In some embodiments, the gas-liquid separation assembly 20 includes a sleeve 25 and a baffle 26 spaced apart along the axial direction of the gas-liquid separation assembly 20. The housing 21 of the gas-liquid separation assembly 20 has a receiving cavity 27, and the sleeve 25 and the baffle 26 are located in the receiving cavity 27. Along the height direction of the gas-liquid separation assembly 20, the orthographic projection of the sleeve 25 onto the baffle 26 is located inside the baffle 26. There is a gap between the outer peripheral surface of the baffle 26 and the inner surface of the housing 21. The sleeve 25 has a channel 251 extending through the sleeve 25 axially. One end of the channel 251 communicates with a second outlet 24, or one end of the channel 251 forms the second outlet 24. The other end of the channel 251 communicates with the receiving cavity 27. Along the height direction of the gas-liquid separation assembly 20, the interface between the channel 251 and the receiving cavity 27 is located between a first outlet 23 and a first inlet 22. The baffle 26 is located between the sleeve 25 and the first outlet 23. Figure 9 In the gas-liquid separation assembly 20 of this embodiment, the working medium entering the gas-liquid two-phase system from the first inlet 22 has a relatively high velocity and moves downward along the gap between the outer surface of the sleeve 25 and the shell 21. Due to the different densities of the gas phase working medium and the liquid phase working medium, they gradually separate during the movement. The gas phase working medium moves along the orifice 251 to the second outlet 24 and is discharged through the second outlet 24, while the liquid phase working medium flows from the gap between the baffle 26 and the inner surface of the shell 21 to the first outlet 23. The gas-liquid separation assembly 20 provided in this embodiment has a simple and compact structure, which can reduce the space occupied by the heat exchange device 100.

[0034] like Figure 8 In some embodiments, the gas-liquid separation assembly 20 further includes a connector 28 fixedly connected to the baffle 26. The baffle 26 may be integrally formed with the connector 28, or welded together by a welding process, or the connector 28 may be fixed to the baffle by an interference fit. The end of the connector 28 away from the baffle 26 includes a limiting part, and the housing 21 includes a mating part. The limiting part may be fitted into the mating part and interference fit with the mating part to achieve the fixed limiting of the connector 28 and the housing 21, thereby achieving the fixation of the baffle 26.

[0035] like Figure 4As shown, in some embodiments, the heat exchange device 100 further includes a second connecting block 40, which is connected to the heat exchange assembly 70. Specifically, the second connecting block 40 is sealed to the heat exchange assembly 70. The heat exchange device 100 also has a connecting pipe 60, which is connected to the first connecting block 30 and the second connecting block 40. A second connecting port E2 is located at one end of the connecting pipe 60. The inner cavity of the connecting pipe 60 communicates with the second connecting port E2, the second outlet 24, and the second port E4, respectively, so that the gaseous working medium discharged from the second outlet 24 and the working medium discharged from the second port E4 can converge through the inner cavity of the connecting pipe 60 and flow to the second connecting port E2, and be discharged from the second connecting port E2. It can be understood that, in order to facilitate stable communication between the connecting pipe 60 and the second outlet 24 and the second port E4, a connection structure can be provided between the gas-liquid separation assembly 20 and the connecting pipe 60, and between the second connecting block 40 and the connecting pipe 60, to improve the connection strength between the connecting pipe 60 and the gas-liquid separation assembly 20 and the second connecting block 40.

[0036] Or, such as Figures 11 to 13 As shown, in some embodiments, the heat exchange device 100 further includes a third connecting block 50 and a connecting pipe 60. The third connecting block 50 is sealed to the heat exchange assembly 70. The third connecting block 50 includes a first interface 51, a second interface 52, and a third interface 53. The first interface 51 communicates with the second outlet 24 of the gas-liquid separation assembly 20 through the inner cavity of the connecting pipe 60. The second interface 52 is adjacent to and communicates with the second port E4 of the heat exchange assembly 70. The second connection port E2 of the heat exchange device 100 is located in the third connecting block 50 and communicates with the third interface 53. Optionally, as shown... Figure 11 As shown, the second connection port E2 can be the third interface 53 of the third connection block 50.

[0037] In some embodiments, such as Figure 11 and Figure 13 The third connecting block 50 includes a first protrusion, and the second interface 52 is located on the first protrusion. The heat exchange assembly 70 includes a second recess corresponding to the position of the first protrusion, and the second port E4 is located on the second recess. The first protrusion is fitted onto the inner surface of the second recess, thereby increasing the connection stability between the third connecting block 50 and the heat exchange assembly 70, and also increasing the sealing performance between the third connecting block 50 and the heat exchange assembly 70. Or as... Figure 4 The third connecting block 50 includes a first protrusion, and the second interface 52 is located on the first protrusion. The heat exchange assembly 70 includes a second protrusion corresponding to the position of the first protrusion. The second protrusion extends from the outer surface of the heat exchange plate 71 in a direction away from the flow channel plate 72. The second port E4 is located on the second protrusion, and the first protrusion is sleeved on the inner surface of the second protrusion.

[0038] To achieve heat exchange between the heat exchanger assembly 70 and heat sources such as batteries, please refer to further details. Figure 2 , Figure 3 , Figure 14 and Figure 15 In some embodiments, the heat exchange assembly 70 includes a heat exchange plate 71 and a flow channel plate 72 that are disposed opposite to each other and sealed together. A refrigerant transport passage 73 is formed between the heat exchange plate 71 and the flow channel plate 72. The refrigerant transport passage 73 includes a first interface segment 731, a second interface segment 732, and a connecting segment 733 connecting the first interface segment 731 and the second interface segment 732. A first port E3 is located in one of the first interface segment 731 and the second interface segment 732, and a second port E4 is located in the other of the first interface segment 731 and the second interface segment 732. In this embodiment of the invention, the first port E3 is located in the first interface segment 731, and the second port E4 is located in the second interface segment 732. Port E4 is located in the second interface segment 732. The heat exchange plate 71 includes a first groove 711, which corresponds to the position of the first interface segment 731 and / or the second interface segment 732. In this case, the first interface segment 731 includes a portion of the cavity of the first groove 711, and / or the second interface segment 732 includes a portion of the cavity of the first groove 711. The flow channel plate 72 includes a second groove 721, which corresponds to the position of the first interface segment 731 and the second interface segment 732. In this case, the first interface segment 731 includes a portion of the cavity of the second groove 721, and the second interface segment 732 includes a portion of the cavity of the second groove 721. Optionally, when the first interface segment 731 includes a portion of the cavity of the first groove 711 and a portion of the cavity of the second groove 721, such as... Figure 15 As shown, the first groove 711 and the corresponding second groove 721 are arranged opposite to each other and their respective cavities are connected.

[0039] In practical implementation, the heat exchange plate 71 is provided with a first groove 711 at the position corresponding to the first interface section 731 and the second interface section 732. The first groove 711 is arranged opposite to the second groove 721 on the flow channel plate 72 and their corresponding cavities are connected. This can increase the flow area of ​​the working medium and reduce the flow resistance. It can be understood that when the heat exchange plate 71 is provided with the first groove 711, when cooling the battery, the battery can be arranged to avoid the first groove 711 so that the battery can make better contact with the heat exchange plate 71.

[0040] In summary, according to the heat exchange device 100 and thermal management system 1 provided in the embodiments of the present invention, the heat exchange device 100 includes a throttling component 10, a gas-liquid separation component 20, a first connecting block 30, and a heat exchange component 70. The throttling component 10 is connected to the gas-liquid separation component 20 via the first connecting block 30, and the gas-liquid separation component 20 is connected to the heat exchange component 70. The first inlet 22 of the gas-liquid separation component 20 can communicate with the first port 11 of the throttling component 10 through the flow cavity of the first connecting block 30. The first connection port E1 of the heat exchange device 100 is located between the first connecting block 30 and the throttling component 10. Firstly, this allows the working medium entering the heat exchanger 100 to flow through the flow chamber of the first connection port E1, the first port 11, and the first connection block 30 into the first inlet 22 of the gas-liquid separation component 20, and then into the heat exchanger 70 from the first outlet 23 of the gas-liquid separation component 20, so that the heat exchanger 70 can exchange heat with heat sources such as batteries, for example, to cool the batteries. In this way, the piping between the gas-liquid separation component 20, the throttling component 10, and the heat exchanger 70 can be relatively reduced, which helps to simplify the heat exchanger 100, improve the integration level of the heat exchanger 100, and facilitate its widespread application.

[0041] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A heat exchange device, characterized in that, It includes a throttling component, a gas-liquid separation component, a first connecting block, and a heat exchange component. The throttling component is connected to the gas-liquid separation component through the first connecting block, and the gas-liquid separation component is fixedly connected to the heat exchange component. The first connecting block has a flow cavity, the throttling component has a first port, the gas-liquid separation component includes a housing, the housing and the first connecting block are integrally formed, the gas-liquid separation component has a first inlet, a first outlet and a second outlet, the first inlet, the first outlet and the second outlet are connected to the flow cavity, the liquid working medium can leave the inner cavity of the gas-liquid separation component from the first outlet, the gas working medium can leave the inner cavity of the gas-liquid separation component from the second outlet, the heat exchange component has a communication channel, the communication channel has a first port and a second port, the first port can communicate with the first inlet through the flow cavity of the first connecting block, the first outlet is connected with the first port, and the second outlet is connected with the second port; The heat exchange device has a first connection port that allows the working medium to flow into the heat exchange device, and the first connection port is located in one of the first connecting block and the throttling component; The heat exchange device further includes a second connecting block connected to the heat exchange assembly. The heat exchange device also has a connecting pipe and a second connecting port that allows the working medium to flow out of the heat exchange device. The second connecting port is located in the connecting pipe. The connecting pipe is connected to the first connecting block and the second connecting block, and the inner cavity of the connecting pipe communicates with the second connecting port, the second outlet, and the second port.

2. The heat exchange device according to claim 1, characterized in that, The first connection port is located in the first connection block. The flow cavity of the first connection block includes a first cavity and a second cavity. The first connection block also has a mounting cavity. One end of the first cavity is connected to the first connection port or one end of the first cavity forms the first connection port. The other end of the first cavity is connected to the mounting cavity. The extension direction of the first cavity intersects the extension direction of the mounting cavity and the first cavity and the mounting cavity intersect at the connection port. The second cavity is connected to the first inlet. At least a portion of the throttling component is located in the mounting cavity, and the first port of the throttling component is connected to the connection port. In the set mode, the first cavity can be connected to the second cavity through the first port.

3. The heat exchange device according to claim 2, characterized in that, The throttling assembly includes a throttling valve, which includes a first valve core that is movable toward or away from the first port to change the flow cross-sectional area of ​​the first port.

4. The heat exchange device according to claim 1, characterized in that, The throttling assembly includes a throttling tube, and the inner diameter of the throttling tube varies along its extension direction. The first connection port is formed in the throttling tube and located at one end of the throttling tube, and the first port is located in the inner cavity of the throttling tube.

5. The heat exchange device according to any one of claims 1 to 4, characterized in that, The gas-liquid separation assembly includes a sleeve and a baffle spaced apart along the axial direction of the gas-liquid separation assembly. The housing of the gas-liquid separation assembly has a receiving cavity, and the sleeve and the baffle are located in the receiving cavity. Along the axial direction of the gas-liquid separation assembly, the orthographic projection of the sleeve onto the baffle is located inside the baffle. The sleeve has a channel that extends through the sleeve along the axial direction, the channel being connected to a second outlet or one end of the channel forming the second outlet, and the baffle being located between the sleeve and the first outlet.

6. The heat exchange device according to any one of claims 1 to 4, characterized in that, The heat exchange device further includes a third connecting block and a connecting pipe. The third connecting block is connected to the heat exchange component. The third connecting block includes a first interface, a second interface and a third interface that are interconnected. The first interface is connected to the second outlet of the gas-liquid separation component through the connecting pipe. The second interface is connected to the second port of the heat exchange component. The heat exchange device also has a second connection port that allows the working medium to flow out of the heat exchange device. The second connection port is located in the third connection block and communicates with the third interface.

7. The heat exchange device according to any one of claims 1 to 4, characterized in that, The heat exchange assembly includes a heat exchange plate and a flow channel plate that are disposed opposite to each other and sealed together. A refrigerant transport path is formed between the heat exchange plate and the flow channel plate. The refrigerant transport path includes a first interface segment and a second interface segment. The first port is located in one of the first interface segment and the second interface segment, and the second port is located in the other of the first interface segment and the second interface segment. The heat exchange plate includes a first groove, the first interface segment includes a cavity in part of the first groove, and / or the second interface segment includes a cavity in part of the first groove. The flow channel plate includes a second groove, the first interface segment includes a cavity of a portion of the second groove, and / or the second interface segment includes a cavity of a portion of the second groove.

8. A thermal management system, characterized in that, The device includes a compressor, a condenser, and a heat exchange device as described in any one of claims 1 to 7, wherein the outlet of the compressor is connected to the inlet of the condenser, the outlet of the condenser is connected to the first connection port of the heat exchange device, the second outlet of the gas-liquid separation assembly is connected to the inlet of the compressor, and the second port of the heat exchange assembly is connected to the inlet of the compressor.

9. The thermal management system according to claim 8, characterized in that, The thermal management system is applied to a vehicle, and the heat exchange device can regulate the temperature of the vehicle battery. The thermal management system also includes a regulating valve and an air conditioning heat exchanger, wherein the working medium passage formed by the regulating valve and the air conditioning heat exchanger is connected in parallel with the working medium passage formed by the heat exchange device.

10. A heat exchange device, characterized in that, It includes a throttling component, a gas-liquid separation component, a first connecting block, and a heat exchange component. The throttling component is connected to the gas-liquid separation component through the first connecting block, and the gas-liquid separation component is fixedly connected to the heat exchange component. The first connecting block has a flow cavity, the throttling component has a first port, the gas-liquid separation component includes a housing, the housing and the first connecting block are integrally formed, the gas-liquid separation component has a first inlet, a first outlet and a second outlet, the first inlet, the first outlet and the second outlet are in communication with the flow cavity, the first inlet is located on the side wall of the housing, along the height direction of the heat exchange device, there is a height difference between the first inlet and the first outlet, the heat exchange component has a communication channel, the communication channel has a first port and a second port, the first port can communicate with the first inlet through the flow cavity of the first connecting block, the first outlet is in communication with the first port, and the second outlet is in communication with the second port; The heat exchange device has a first connection port that allows the working medium to flow into the heat exchange device, and the first connection port is located in one of the first connecting block and the throttling component; The heat exchange device further includes a second connecting block connected to the heat exchange assembly. The heat exchange device also has a connecting pipe and a second connecting port that allows the working medium to flow out of the heat exchange device. The second connecting port is located in the connecting pipe. The connecting pipe is connected to the first connecting block and the second connecting block, and the inner cavity of the connecting pipe communicates with the second connecting port, the second outlet, and the second port.

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