Fluid management devices and thermal management systems

Abstract

The fluid management device and thermal management system provided in the embodiments of the present application include a block having a first cavity and a second cavity therein, the block including a heat exchange portion, the first wall of the heat exchange portion facing the first cavity, the second wall of the heat exchange portion facing the second cavity, the connecting piece having a housing cavity for accommodating a throttling unit, and the connecting piece having a fourth opening facing the first channel on the connecting wall. In this way, the connecting piece includes the block, the block includes the heat exchange portion, the structure of the connecting piece is simple, easy to process, and easy to integrate with the throttling unit and the first heat exchange unit. Accordingly, the thermal management system is also relatively simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid management, and in particular to a fluid management device and a thermal management system. Background Art

[0002] The thermal management system includes a heat exchanger, which is used for heat exchange of fluids in different flow channels. For example, a plate heat exchanger is made up of multiple stacked plates, and adjacent plates are welded and fixed. The welding requirements are relatively high, and it is not convenient to integrate with other functional components in the thermal management system. Summary of the Invention

[0003] The purpose of this application is to provide a fluid management device and a thermal management system to help solve the above problems.

[0004] One embodiment of the present application provides a fluid management device, including a first heat exchange unit and a connector, the connector having a first flow channel and a second flow channel, the first flow channel including a first cavity, the second flow channel including a second cavity, the connector including a block, the first cavity and the second cavity being located within the block, the connector including a heat exchange portion, at least a portion of the heat exchange portion being integrally structured with the block, the heat exchange portion including a first wall and a second wall, the first wall facing the first cavity, the walls forming the first cavity including the first wall, the second wall facing the second cavity, the walls forming the second cavity including the second wall;

[0005] The fluid management device has a first port and a second port, the first port being in communication with the first cavity;

[0006] The connecting member is fixedly connected or positionally connected to the first heat exchange unit, the first heat exchange unit has a first channel, a second channel and an inter-plate channel, the first channel and the second channel are connected through the inter-plate channel;

[0007] The connecting member has a third port and a fourth port. The third port and the fourth port are in communication with the second cavity. The fourth port is located on the connecting wall of the connecting member. At least a portion of the fourth port is arranged opposite to the first channel.

[0008] Another embodiment of the present application provides a fluid management device, including a throttling unit and a connector, the connector having a first flow channel and a second flow channel, the first flow channel including a first cavity, the second flow channel including a second cavity, the connector including a block, the first cavity and the second cavity being located within the block, the connector including a heat exchange portion, at least a portion of the heat exchange portion being integrally structured with the block, the heat exchange portion including a first wall and a second wall, the first wall facing the first cavity, the walls forming the first cavity including the first wall, the second wall facing the second cavity, the walls forming the second cavity including the second wall;

[0009] The block includes a housing portion having a housing cavity, at least a portion of the throttling unit is located in the housing cavity, and the throttling unit is fixedly connected or positionally connected to the housing portion; the fluid management device has a first port and a second port, the first port is in communication with the first cavity, and the first cavity can be in communication with the second port through the throttling unit;

[0010] The connecting member has a third port and a fourth port. The third port and the fourth port are in communication with the second cavity. The fourth port is located on the connecting wall of the connecting member. At least a portion of the fourth port is arranged opposite to the first channel.

[0011] Yet another embodiment of the present application provides a fluid management device, including a connector, the connector having a first flow channel and a second flow channel, the first flow channel including a first cavity, the second flow channel including a second cavity, the connector including a block, the first cavity and the second cavity being located within the block, the connector including a heat exchange portion, at least a portion of the heat exchange portion being integrally structured with the block, the heat exchange portion including a first wall and a second wall, the first wall facing the first cavity, the walls forming the first cavity including the first wall, the second wall facing the second cavity, the walls forming the second cavity including the second wall;

[0012] The fluid management device has a first port and a second port, and the first port is connected to the first cavity; the connecting piece has a third port and a fourth port, and the third port and the fourth port are connected to the second cavity. The fourth port is located on the connecting wall of the connecting piece, and at least a portion of the fourth port is arranged opposite to the first channel.

[0013] Another embodiment of the present application provides a thermal management system, including a compressor, a condenser and a fluid management device, wherein the fluid management device is the above-mentioned fluid management device, the outlet of the compressor can be connected to the first flow channel of the fluid management device through the condenser, and the second flow channel of the fluid management device is connected to the inlet of the compressor.

[0014] The fluid management device and thermal management system provided in the embodiments of the present application include a connector, which includes a block having a first cavity and a second cavity. The block includes a heat exchange portion, the first wall of the heat exchange portion facing the first cavity, and the second wall of the heat exchange portion facing the second cavity. The connector has a fourth port on the connecting wall facing the first channel. Thus, the connector includes the block and the heat exchange portion, and the structure of the connector is simple and easy to process. When the fluid management device includes a throttling unit or a first heat exchange unit, the connector has a cavity for accommodating the throttling unit and a port communicating with the heat exchange unit. This facilitates integration with the throttling unit and the first heat exchange unit, and accordingly, the thermal management system is relatively simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic perspective structural diagram of a first embodiment of a connector in a fluid management device;

[0016] Figure 2 yes Figure 1 A schematic diagram of an exploded structure of a connector from one perspective;

[0017] Figure 3 yes Figure 1 Schematic diagram of the exploded structure of the connector from another perspective;

[0018] Figure 4 yes Figure 1 A schematic diagram of the structure of the connecting part from one perspective;

[0019] Figure 5 yes Figure 4 A schematic cross-sectional view of the first embodiment along AA;

[0020] Figure 6 yes Figure 4 A schematic cross-sectional view of the second embodiment along AA;

[0021] Figure 7 yes Figure 4 A schematic cross-sectional view of a third embodiment along AA;

[0022] Figure 8 is a schematic perspective structural diagram of a second embodiment of a connector in a fluid management device;

[0023] Figure 9 yes Figure 8 A schematic diagram of an exploded structure of a connector from one perspective;

[0024] Figure 10 yes Figure 8 A schematic cross-sectional view of a connecting member;

[0025] Figure 11 It is a structural schematic diagram of a fluid management device;

[0026] Figure 12 is another structural schematic diagram of a fluid management device;

[0027] Figure 13 yes Figure 4 A schematic cross-sectional view of a fourth embodiment along AA;

[0028] Figure 14 is a connection diagram of a first embodiment of a thermal management system;

[0029] Figure 15 is a connection diagram of a second embodiment of the thermal management system;

[0030] Figure 16 2 is a connection diagram of a third embodiment of a thermal management system. DETAILED DESCRIPTION

[0031] The fluid management device and thermal management system of the technical solution of the present invention can have multiple implementation modes, at least one of which can be applied to a vehicle thermal management system, and at least one of which can be applied to other thermal management systems such as a household thermal management system or a commercial thermal management system. The following is an explanation using the fluid management device and thermal management system applied to a vehicle thermal management system as an example with reference to the accompanying drawings. The fluid is a refrigerant, including R134a or CO2 or other forms of refrigerant.

[0032] See also Figures 1-13 One embodiment of the present application further provides a fluid management device 3, comprising a connector 100 and a throttling unit 200. In this embodiment, the connector 100 includes a housing 105. In a specific embodiment, the connector includes a block, which includes the housing 105. The housing 105 has a housing cavity 106. At least a portion of the throttling unit 200 is located in the housing cavity 106. The throttling unit 200 is fixedly connected or positionally connected to the housing 105. The fluid management device 3 has a first port 1011 and a second port 1012. The first port 1011 communicates with the first cavity 103. The first cavity 103 can communicate with the second port 1012 through the throttling unit 200. In this embodiment, the first port 1011 is an inlet of the fluid management device 3, and the second port 1012 is an outlet of the fluid management device. The throttling unit 200 is integrated with the connector 100, which helps prevent refrigerant leakage and miniaturizes the fluid management device 3.

[0033] See also Figure 12. Another embodiment of the present application also provides a fluid management device 3, which includes a connector and a first heat exchange unit 32. The connector 100 is fixedly connected or positionally connected to the first heat exchange unit 32, and the connection method includes welding, bonding or bolting. In this embodiment, the first heat exchange unit 32 includes a plurality of stacked plates, and the first heat exchange unit has a first channel 321, a second channel 322 and an inter-plate channel, wherein the first channel 321 can be connected to the second channel 322 through the inter-plate channel. The connector has a third port 1021 and a fourth port 1022, and the third port 1021 and the fourth port 1022 are connected to the second cavity 104. The fourth port 1022 is located on the connecting wall of the connector, and the connecting wall of the connector faces the first heat exchange unit 32, and is used to connect to the first heat exchange unit 32. At least part of the fourth port 1022 is arranged opposite to the first channel 321, and the fourth port 1022 is connected to the first channel 321. In this embodiment, after the refrigerant exchanges heat in the first heat exchange unit 32, it enters the connector through the fourth port 1022 and finally flows out through the third port 1021. The third port 1021 is an outlet of the fluid management device 3; in other embodiments, the third port 1021 can also be an inlet of the fluid management device 3.

[0034] Furthermore, the fluid management device 3 also includes a throttling unit 200, the connecting part includes a accommodating portion 105, the accommodating portion has an accommodating cavity 106, at least part of the throttling unit 200 is located in the accommodating cavity 106, the throttling unit 200 is fixedly connected or limit-connected to the accommodating portion 105, and the first cavity 103 can be connected to the second port 1012 through the throttling unit 200, which will not be described in detail.

[0035] The fluid management device 3 can be applied to a thermal management system. When the thermal management system is working, the first heat exchange unit can serve as an evaporator. Specifically, the high-temperature and high-pressure refrigerant discharged from the compressor enters the first cavity 103 from the first port 1011 after releasing heat in the condenser. The throttling unit 200 throttles and reduces the pressure before entering the second channel of the first heat exchange unit. The refrigerant absorbs heat in the inter-plate flow channel and then enters the second cavity 104 from the first channel. Finally, the third port 1021 discharges the fluid management device and enters the inlet of the compressor 1. At this time, the fluid in the first cavity 103 and the fluid in the second cavity 104 can exchange heat.

[0036] See also Figures 1-10The connector 100 has at least a first flow channel 101 and a second flow channel 102. The first flow channel 101 includes a first cavity 103, and the second flow channel 102 includes a second cavity 104. The connector 100 includes a block 100', and the first cavity 103 and the second cavity 104 are located inside the block 100'. The block 100' described here can be of regular shape or irregular shape, and can be square, flat, plate-shaped or other shapes. The connector includes a heat exchange part 130, at least part of the heat exchange part 130 and the block 100' are an integral structure, and the heat exchange part 130 includes a first wall 131 and a second wall 132, the first wall 131 faces the first cavity 103, and the second wall 132 faces the second cavity 104. When the connector 100 is working, the fluid in the first flow channel 101 and the fluid in the second flow channel 102 can be the same medium or different media. The extension direction of the first flow channel or the second flow channel is defined as a first direction. A first surface is defined, the first surface being perpendicular to the first direction. The intersection of the first surface and the heat exchange portion is defined as a first cross-section. The width of the first cross-section is greater than or equal to 1 mm and less than or equal to 5 mm. In this embodiment, the fluid in the first flow channel 101 and the fluid in the second flow channel 102 are refrigerants. The fluid in the second flow channel 102 is a low-pressure fluid, and the fluid in the first flow channel 101 is a high-pressure fluid. The fluid in the first cavity 103 contacts the first wall 131, and the fluid in the second cavity 104 contacts the second wall 132. The fluid in the first cavity 103 and the fluid in the second cavity 104 can exchange heat through the heat exchange portion 130. The thickness of the heat exchange portion 130 can be in the range of 1 mm to 5 mm, and of course, the thickness of the heat exchange portion 130 can also be less than 1 mm or greater than 5 mm. The first cavity 103 and the second cavity 104 are located within the block 100', and the fluid in the first cavity 103 and the fluid in the second cavity 104 can exchange heat. The first cavity 103 and the second cavity 104 can extend in a straight or serpentine shape. Figure 5-Figure 7 In this embodiment, connector 100 includes a block 100', within which are formed a first cavity 103 and a second cavity 104 for heat exchange. The block includes a heat exchange portion 130, with a first wall 131 facing the first cavity 103 and a second wall 132 facing the second cavity 104. This connector 100 has a relatively simple structure and is easy to manufacture. Furthermore, the block structure of connector 100 facilitates integration with valves or other types of heat exchangers.

[0037] The connector 100 has a first port 1011, a second port 1012, a third port 1021, and a fourth port 1022. The first port 1011 and the second port 1012 are in communication with the first flow channel 101. One of the first port 1011 and the second port 1012 serves as a first inlet of the connector 100, while the other serves as a first outlet of the connector 100. The third port 1021 and the fourth port 1022 are in communication with the second flow channel 102. One of the third port 1021 and the fourth port 1022 serves as a second inlet of the connector 100, while the other serves as a second outlet of the connector 100. In this embodiment, the first port 1011 serves as a first inlet, the second port 1012 serves as a first outlet, the third port 1021 serves as a second inlet, and the fourth port 1022 serves as a second outlet. The first port 1011, the second port 1012, the third port 1021, and the fourth port 1022 can be formed in the block 100', or in a tube or block structure that is positionally connected or fixedly connected to the block 100'. In other embodiments, the connector can include two or more first flow channels, or two or more second flow channels, and the connector 100 can also have five or more ports, which will not be described in detail.

[0038] See also Figure 1-Figure 5The block 100' includes a first block 110 and a second block 120. The first block 110 includes a first connecting wall 111, and the second block 120 includes a first matching wall 121. The first connecting wall 111 and the first matching wall 121 are sealed. The first connecting wall 111 and the first matching wall 121 can be welded or bonded. In addition, the first block 110 and the second block 120 can also be fixed with bolts. In this case, a seal is set between the first connecting wall 111 and the first matching wall 121 to enhance the seal. The first block 110 includes a first hole portion 112 and a second hole portion 113, the first wall 131 is located in the first hole portion 112, the second wall 132 is located in the second hole portion 113, the first hole portion 112 has a first hole 1120, the second hole portion 113 has a second hole 1130, the first hole 1120 includes a first orifice 1121, the first orifice 1121 is located in the first connecting wall 111, or in other words, the first connecting wall 111 is distributed circumferentially along the first orifice 1121, and the first orifice 1121 faces the second block 120. The second hole 1130 includes a second opening 1131. The second opening 1131 is located in the first connecting wall 111, or in other words, the wall of the first connecting wall 111 is distributed circumferentially along the second opening 1131. The second opening 1131 faces the second block 120. The first opening 1121 is located on one side of the heat exchange portion 130, and the second opening 1131 is located on the opposite side of the heat exchange portion 130. The first block 110 and the second block 120 cooperate to form the first cavity 103 and the second cavity 104. In other embodiments, part of the heat exchange portion 130 is located in the first block 110, and another part of the heat exchange portion 130 is located in the second block 120. Accordingly, part of the first cavity 103 is formed in the second block 120, and part of the second cavity 104 is formed in the second block 120.

[0039] In this embodiment, the first hole portion 112 and the second hole portion 113 are holes with bottom walls. Specifically, the first hole portion 112 includes a first bottom wall 1122, and the second hole portion 113 includes a second bottom wall 1132. The first bottom wall 1122 faces the first orifice 1121, and the second bottom wall 1132 faces the second orifice 1131. Along the axial direction of the first orifice 1121, the first wall 131 is closer to the second block 120 than the first bottom wall 1122, or in other words, the first wall 131 is the side wall of the first hole portion 112, and the second wall 132 is closer to the second block 120 than the second bottom wall 1132, or in other words, the second wall 132 is the side wall of the second hole portion 113.

[0040] See also Figures 8-10The heat exchange portion 130 is distributed circumferentially along the second hole 1130, and the first hole 1120 is distributed circumferentially along the heat exchange portion 130. In the radial direction of the second hole 1130, the heat exchange portion 130 is closer to the first hole 1120 than the second hole 1130. Thus, the first chamber 103 has a first path 1031 and a second path 1032. The heat exchange portion 130 is annular, which relatively increases the heat exchange surface and helps improve heat exchange efficiency. The second hole portion 113 includes a second bottom wall 1132. The first block 110 includes a first through hole 115 and a second through hole 1166. The first through hole 115 and the second through hole 116 each have an opening in the second bottom wall 1132. One of the first through hole 115 and the second through hole 116 communicates with the inlet of the second flow channel 102, and the other communicates with the outlet of the second flow channel 102.

[0041] See also Figure 10 The connector 100 further includes a protrusion 1123, which is located in at least one of the first hole portion 112 and the second hole portion 113. The protrusion located in the first hole portion 112 protrudes relative to the first wall 131, and the protrusion located in the second hole portion 113 protrudes relative to the second wall 132. In this embodiment, the protrusion 1123 of the connector 100 is located on the first wall 131. The provision of the protrusion 1123 on the connector 100 can enhance the heat exchange efficiency of the connector 100. In another specific embodiment, the connector 100 includes a recessed portion, which is located in at least one of the first hole portion 112 and the second hole portion 113. The recessed portion located in the first hole portion 112 is recessed relative to the first wall 131, and the recessed portion located in the second hole portion 113 is recessed relative to the second wall 132. The provision of the recessed portion on the connector 100 can enhance the heat exchange efficiency of the connector 100.

[0042] In addition, the block may further include a third block (not shown). In this case, the first block 110 includes a second connecting wall, the third block includes a second mating wall, the second connecting wall is sealed and fixed to the second mating wall, the first hole includes a third orifice, the third orifice is located in the second connecting wall, or in other words, the second connecting wall is distributed circumferentially along the third orifice, and the third orifice faces the third block. The second hole includes a fourth orifice, the fourth orifice is located in the second connecting wall, or in other words, the second connecting wall is distributed circumferentially along the fourth orifice, and the fourth orifice faces the third block. In this embodiment, the first cavity 103 and the second cavity 104 are formed by the first block 110, the second block 120 and the third block cooperating with each other. Along the axial direction of the first orifice 1121, the third block is located on one side of the first block 110, and the second block 120 is located on the other side of the first block 110. The block may further comprise more blocks. In this case, at least one of the first bottom wall 1122 and the second bottom wall 1132 is located in a third block. The third block comprises a second mating wall. The block adjacent to the third block comprises a second connecting wall, which is sealed against the second mating wall. The first hole portion 112 comprises a third opening, which is located in the second connecting wall and faces the third block. The second hole portion 113 comprises a fourth opening, which is located in the second connecting wall and faces the third block. The block may also be a one-piece structure, formed by machining or casting.

[0043] For other implementations, see Figure 13 The block 100' includes a first block 110 and a second block 120. The first cavity 103 is located in the first block 110, and the second cavity 104 is located in the second block 120. The heat exchange portion 130 includes two parts, wherein the first sub-portion 133 of the heat exchange portion 130 is located in the first block 110, and the second sub-portion 134 of the heat exchange portion 130 is located in the second block 120. At least a portion of the first connecting wall 111 is located in the first sub-portion 133, and at least a portion of the first matching wall 121 is located in the second sub-portion. The first sub-portion 133 and the second sub-portion 134 are welded together. Of course, the heat exchange portion 130 can also be located entirely in the first block 110 or the second block 120, which will not be described in detail. The above-mentioned connector includes a block, which facilitates the integration of the connector with other components.

[0044] See also Figure 14One embodiment of the present application further provides a thermal management system, which includes a compressor 1, a condenser 2, a throttling unit 200, the aforementioned connector 100, and an evaporator 4. When the thermal management system is operating, the outlet of the compressor 1 is connected to the first flow channel 101 of the connector 100 through the condenser 2. The refrigerant flowing out of the first flow channel 101 is throttled and reduced in pressure by the throttling unit 200 before entering the evaporator. After evaporating and absorbing heat in the evaporator 4, the refrigerant enters the second flow channel 102 of the connector 100 and finally enters the inlet of the compressor 1 to participate in the next cycle. In this embodiment, the connector 100 serves as an intermediate connector 100 in the thermal management system, which can improve the performance of the thermal management system. The connector 100 is a block, which facilitates the connection of the connector 100 to the pipeline and the integration of the connector 100 with other components in the thermal management system. The other components mentioned here include valves, connecting pipes, and evaporators. For example, the connector 100 and the throttling unit 200 are integrated to form a fluid management device 3, and the connector is integrated with the evaporator 4 to form a fluid management device 3. The fluid management device 3 can also be applied to the thermal management system, such as Figure 15 and Figure 16 , no further description will be given.

[0045] 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 this specification has described the present invention in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fluid management device, comprising a first heat exchange unit and a connector, the connector having a first flow channel and a second flow channel, the first flow channel including a first cavity, the second flow channel including a second cavity, the connector including a block, the first cavity and the second cavity being located within the block, the connector including a heat exchange portion, at least a portion of the heat exchange portion being integrally formed with the block, the heat exchange portion including a first wall and a second wall, the first wall facing the first cavity, the walls forming the first cavity including the first wall, the second wall facing the second cavity, the walls forming the second cavity including the second wall; The fluid management device has a first port and a second port, wherein the first port and the second port are in communication with the first cavity; The connecting member is fixedly connected or positionally connected to the first heat exchange unit, the first heat exchange unit has a first channel, a second channel and an inter-plate channel, the first channel and the second channel are connected through the inter-plate channel; The connecting member has a third port and a fourth port. The third port and the fourth port are in communication with the second cavity. The fourth port is located on the connecting wall of the connecting member. At least a portion of the fourth port is arranged opposite to the first channel.

2. A fluid management device, comprising a throttling unit, a first heat exchange unit, and a connector, the connector having a first flow channel and a second flow channel, the first flow channel including a first cavity, the second flow channel including a second cavity, the connector including a block, the first cavity and the second cavity being located within the block, the connector including a heat exchange portion, at least a portion of which is integrally formed with the block, the heat exchange portion including a first wall and a second wall, the first wall facing the first cavity, the walls forming the first cavity including the first wall, the second wall facing the second cavity, the walls forming the second cavity including the second wall; The block includes a housing portion having a housing cavity, at least a portion of the throttling unit is located in the housing cavity, and the throttling unit is fixedly connected or positionally connected to the housing portion; the fluid management device has a first port and a second port, the first port is in communication with the first cavity, and the first cavity can be in communication with the second port through the throttling unit; The connecting member has a third port and a fourth port, the third port and the fourth port are connected to the second cavity, the fourth port is located on the connecting wall of the connecting member, the first heat exchange unit includes a first channel, and at least part of the fourth port is arranged opposite to the first channel.

3. A fluid management device, comprising a connector and a first heat exchange unit, the connector having a first flow channel and a second flow channel, the first flow channel including a first cavity, the second flow channel including a second cavity, the connector including a block, the first cavity and the second cavity being located within the block, the connector including a heat exchange portion, at least a portion of the heat exchange portion being integrally formed with the block, the heat exchange portion including a first wall and a second wall, the first wall facing the first cavity, the walls forming the first cavity including the first wall, the second wall facing the second cavity, the walls forming the second cavity including the second wall; The fluid management device has a first port and a second port, and the first port and the second port are connected to the first cavity; the connecting piece has a third port and a fourth port, and the third port and the fourth port are connected to the second cavity, and the fourth port is located on the connecting wall of the connecting piece; the first heat exchange unit includes a first channel, and at least part of the fourth port is arranged opposite to the first channel.

4. The fluid management device according to any one of claims 1 to 3, characterized in that: Define the extension direction of the first flow channel or the second flow channel as a first direction, define a first surface, the first surface is perpendicular to the first direction, and the intersection of the first surface and the heat exchange part is defined as a first cross-section, and the width of the first cross-section is greater than or equal to 1 mm and less than or equal to 5 mm.

5. The fluid management device according to claim 4, characterized in that The block includes a first block and a second block, the first block includes a first connecting wall and at least a portion of the heat exchange portion, the second block includes a first matching wall, and the first connecting wall and the first matching wall are sealed; The first block includes a first hole portion and a second hole portion, at least a portion of the first wall is located in the first hole portion, and at least a portion of the second wall is located in the second hole portion; the first hole portion has a first hole, the first cavity includes the first hole, the first hole portion has a first opening, the first opening is located in the first connecting wall, and the first opening faces the second block; The second hole portion has a second hole, the second cavity includes the second hole, the second hole portion has a second opening, the second opening is located in the first connecting wall, and the second opening faces the second block.

6. The fluid management device according to claim 5, characterized in that The first hole portion includes a first bottom wall, the second hole portion includes a second bottom wall, the first bottom wall faces the first opening, and the second bottom wall faces the second opening; Along the axial direction of the first hole, the first wall is closer to the second block than the first bottom wall, and the second wall is closer to the second block than the second bottom wall.

7. The fluid management device according to claim 6, characterized in that The block includes a third block, and along the axis direction of the first orifice, the third block is located on one side of the first block, and the second block is located on the other side of the first block, at least one of the first bottom wall and the second bottom wall is located on the third block, the third block includes a second matching wall, and the block adjacent to the third block includes a second connecting wall, and the second connecting wall is sealed with the second matching wall; The first hole portion has a third opening, the third opening is located in the second connecting wall, and the third opening faces the third block. The second hole portion has a fourth opening, the fourth opening is located in the second connecting wall, and the fourth opening faces the third block.

8. The fluid management device according to claim 6 or 7, characterized in that: The heat exchange portion is distributed along the circumference of the second hole, the first holes are distributed along the circumference of the heat exchange portion, and along the radial direction of the second hole, the heat exchange portion is closer to the second hole than the first holes.

9. The fluid management device according to claim 8, characterized in that The first hole portion includes the first bottom wall, and the second hole portion includes the second bottom wall; the block has a first through hole and a second through hole, and the first through hole and the second through hole respectively have openings in the second bottom wall, and one of the first through hole and the second through hole is connected to the inlet of the second flow channel, and the other is connected to the outlet of the second flow channel.

10. The fluid management device according to claim 9, characterized in that At least one of the first hole portion and the second hole portion includes a convex portion, the convex portion protruding relative to the first wall and the convex portion protruding relative to the second wall; Alternatively, at least one of the first hole portion and the second hole portion includes a recessed portion, the recessed portion being recessed relative to the first wall and the recessed portion being recessed relative to the second wall.

11. A thermal management system comprising a compressor, a condenser and a fluid management device, wherein the fluid management device is a fluid management device according to any one of claims 1 to 10, wherein the outlet of the compressor can be connected to a first flow channel of the fluid management device through the condenser, and the second flow channel of the fluid management device is connected to an inlet of the compressor.

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