Fluid management device and thermal management system

Abstract

The fluid management device includes a connecting part, a valve unit, and a throttling unit. The valve unit and the throttling unit are assembled into a whole through the connecting part. The fluid management device is connected to the thermal management system as a whole, which is convenient for assembly with the thermal management system. By setting a connecting channel in the connecting part, the opening and closing of the connecting channel is controlled by the opening and closing of the valve unit, and the flow rate is regulated by the throttling unit. Since the connecting channel is formed inside the connecting part, the connection point of the connecting channel is inside the connecting part, which reduces the leakage of the fluid management device.

Description

Technical Field

[0001] This application relates to the field of fluid management, specifically to a fluid management device and a thermal management system. Background Technology

[0002] A thermal management system includes components such as a liquid storage unit, a heat exchange unit, and throttling components. These components are usually connected by multiple pipelines. As the complexity of the system increases, the number of components and connection points also increase, leading to an increased risk of leakage at the connection points and making assembly inconvenient. Summary of the Invention

[0003] The purpose of this application is to provide a fluid management device and a thermal management system that facilitates the assembly of the thermal management system and reduces leakage at the connection points.

[0004] One embodiment of this application adopts the following technical solution: a fluid management device, the fluid management device including a connecting part, a throttling unit, a heat exchange part and a liquid storage part, the heat exchange part including a first heat exchanger, the first heat exchanger having a first flow channel and a second flow channel, the first flow channel and the second flow channel being relatively non-communicating, the first heat exchanger being fixedly connected to or limited by the connecting part; the fluid management device having a liquid storage cavity, the connecting part including a mounting part, the mounting part including a first mounting part and a second mounting part, the first mounting part being fixedly connected to or limited by the liquid storage part, at least a portion of the liquid storage cavity being located within the liquid storage part, at least a portion of the throttling unit being located in the mounting hole of the second mounting part;

[0005] The connecting part has a first connecting channel, a second connecting channel, a third connecting channel and a fourth connecting channel. The first connecting channel has an opening formed in the wall of the first mounting part and communicates with the liquid storage chamber. The second connecting channel has an opening formed in the wall of the second mounting part. The first connecting channel communicates with the second connecting channel through the first flow channel. The third connecting channel communicates with the fourth connecting channel through the second flow channel.

[0006] Another embodiment of this application adopts the following technical solution: a thermal management system, including a compressor, a fluid management device, a fourth heat exchanger and a fifth heat exchanger, wherein the fluid management device includes the above-mentioned fluid management device, the fluid management device having a first inlet, a second inlet, a third inlet, a first outlet, a second outlet and a third outlet, the outlet of the compressor is connected to the first inlet, the inlet of the compressor is connected to the first outlet, the second outlet is connected to the second inlet through the fourth heat exchanger, and the third outlet is connected to the third inlet through the fifth heat exchanger.

[0007] The fluid management device and thermal management system of this application assemble the heat exchange section, liquid storage section and throttling unit into a whole through the connecting part. The fluid management device is connected to the thermal management system as a whole, which is convenient to assemble with the thermal management system. By setting a connecting channel in the connecting part, the flow rate is adjusted by the throttling unit. Since the connecting channel is formed in the connecting part and the connection point of the connecting channel is located inside the connecting part, the leakage of the fluid management device is reduced. Attached Figure Description

[0008] Figure 1 This is a perspective view of a first embodiment of the fluid management device of this application;

[0009] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the first embodiment of the fluid management device of this application;

[0010] Figure 3 yes Figure 1 An exploded structural diagram of a fluid management device from one perspective;

[0011] Figure 4 yes Figure 1 An exploded structural diagram of a fluid management device from another perspective;

[0012] Figure 5 yes Figure 1 A top view of the central connecting section;

[0013] Figure 6 yes Figure 5 A schematic diagram of the AA section structure of the connecting part;

[0014] Figure 7 yes Figure 5 A schematic diagram of the BB cross-section structure of the connecting part;

[0015] Figure 8 yes Figure 1 A structural schematic diagram of the mounting holes, channels, and connecting channels inside the middle connecting part;

[0016] Figure 9 This is a three-dimensional structural illustration of a second embodiment of the fluid management device of this application;

[0017] Figure 10 This is a three-dimensional structural illustration of a third embodiment of the fluid management device of this application;

[0018] Figure 11 This is a three-dimensional structural illustration of the fourth embodiment of the fluid management device of this application;

[0019] Figure 12 This is a connection diagram of a thermal management system. Detailed Implementation

[0020] The fluid management device of this application can be applied to a vehicle thermal management system, including new energy vehicles, where the fluid is a refrigerant, including R134a, CO2, or other forms of refrigerant. The invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] Please see Figures 1-11 The fluid management device 10 includes a connecting part 100, a throttling unit 400, a heat exchange part 500, and a liquid storage part 200. The heat exchange part 500 includes a first heat exchanger 510, which has a first flow channel 511 and a second flow channel 512. The first flow channel 511 and the second flow channel 512 are not connected to each other. The fluid in the first flow channel 511 and the fluid in the second flow channel 512 can exchange heat. In this embodiment, the first heat exchanger 510 includes a plurality of stacked plates. The fluid in the first flow channel 511 and the fluid in the second flow channel 512 are both refrigerants. The first heat exchanger 510 is fixedly connected to or limited to the connecting part 100. The connection mentioned here includes direct connection and indirect connection. Indirect connection means that an adapter is provided between the first heat exchanger 510 and the connecting part 100. The adapter can be a block or plate structure. The connection method includes welding, bonding, bolting, or other connection methods. The fluid management device 10 has a liquid storage chamber 107. The connecting portion 100 includes a mounting portion, which includes a first mounting portion 140 and a second mounting portion 150. The first mounting portion 140 is fixedly connected to or limitedly connected to the liquid storage portion 200 and is sealed at the connection. At least a portion of the liquid storage chamber 107 is located within the liquid storage portion 200. The second mounting portion 150 has a mounting hole that mates with a throttling unit 400. At least a portion of the throttling unit 400 is located within the mounting hole of the second mounting portion 150. The throttling unit 400 is capable of throttling and reducing the pressure of the fluid within the second mounting portion 150.

[0022] The connecting part 100 has a first connecting channel 111, a second connecting channel 112, a third connecting channel 113, and a fourth connecting channel 114. The first connecting channel 111 communicates with the liquid storage chamber 107. The first connecting channel 111 communicates with the second connecting channel 112 through a first flow channel 511. The second connecting channel 112 has an opening formed in the second mounting part 150 and communicates with the mounting hole of the second mounting part 150. The first connecting channel 111 is the outlet channel of the liquid storage chamber 107. The fluid in the liquid storage chamber 107 enters the first flow channel 511 of the first heat exchanger through the first connecting channel 111, and then enters the second connecting channel 112. After being throttled by the throttling unit 400, it flows out of the connecting part 100. The third connecting channel 113 communicates with the fourth connecting channel 114 through the second flow channel 512. The third connecting channel 113 is the inlet channel of the second flow channel 512 of the first heat exchanger, and the fourth connecting channel 114 is the outlet channel of the second flow channel 512.

[0023] The connecting part 100 can be a block, and the connecting channel and the mounting hole can be machined; the connecting part 100 can also be a casting, and the connecting channel and the mounting hole can be formed by casting or machining; the connecting part 100 can also be a forging, and two or more separate parts can be formed by forging and welding or bonding to form a connecting channel.

[0024] The fluid management device 10 assembles the liquid storage section 200, the throttling unit 400, and the heat exchange section 500 into a whole. The liquid storage section 200 and the throttling unit 400 are connected by a connecting channel provided in the connecting section 100. The connecting section 100 is provided with an inlet channel and an outlet channel of the first flow channel. The connecting section 100 is also provided with an inlet channel and an outlet channel of the second flow channel 512. Since the connecting channel is formed inside the connecting section 100, the connection point of the connecting channel is located inside the connecting section 100, which reduces external leakage of the connecting channel connection.

[0025] Please see Figures 1-4 The liquid storage section 200 includes a cylindrical body, a portion of which is located in the mounting hole of the first mounting section 140. The outer wall of the cylindrical body is welded and fixed to the inner wall of the first mounting section 140. Along the axial direction of the liquid storage section 200, or along the axial direction of the cylindrical body, at least a portion of the liquid storage section 200 is located on one side of the connecting section 100, and the first heat exchanger 510 is located on the opposite side of the connecting section 100; or, along the axial direction of the cylindrical body, at least a portion of the connecting section 100 is located between the liquid storage section 200 and the first heat exchanger 510. This arrangement ensures that the center of mass of the fluid management device 10 is located within or near the connecting section 100, which is beneficial to the structural stability of the fluid management device 10. The connecting section 100 includes a first wall portion 131 and a second wall portion 132. The first wall portion 131 faces the first heat exchanger 510, and the first wall portion 131 is directly or indirectly fixedly connected to the connecting wall portion 513 of the first heat exchanger. The first connecting channel 111, the second connecting channel 112, the third connecting channel 113, and the fourth connecting channel 114 all have openings facing the first heat exchanger 510 in the first wall portion 131. Correspondingly, the first flow channel 511 has two openings in the connecting wall portion 513 of the first heat exchanger. The two openings of the first flow channel 511 respectively cooperate with the openings of the first connecting channel 111 and the second connecting channel 112 in the first wall portion 131, thereby realizing the connection between the first flow channel 511 and the second connecting channel 112. Similarly, the second flow channel 512 has two openings in the connecting wall portion 513 of the first heat exchanger. The two openings of the second flow channel 512 respectively cooperate with the openings of the third connecting channel 113 and the fourth connecting channel 114 in the first wall portion 131, thereby realizing the connection between the second flow channel and the third connecting channel 113 and the fourth connecting channel 114.

[0026] The connecting portion 100 also includes a fifth connecting channel 115. The throttling unit 400 enables the second connecting channel 112 to communicate with the fifth connecting channel 115. In other words, the refrigerant in the second connecting channel 112 is throttled by the throttling unit and flows out of the connecting portion 100 through the fifth connecting channel 115. The fifth connecting channel 115 has an outlet in the connecting portion 100. In one specific embodiment, the fifth connecting channel 115 has an outlet in the first wall portion 131.

[0027] Please see Figure 3 , Figure 4 as well as Figure 8 The heat exchange section also includes a second heat exchanger 520. In this embodiment, the second heat exchanger 520 includes multiple stacked plates. The second heat exchanger 520 includes a refrigerant channel 521 and a coolant channel. The refrigerant in the refrigerant channel 521 and the coolant in the coolant channel of the second heat exchanger can exchange heat. The connecting wall portion 522 of the second heat exchanger 520 is directly or indirectly fixedly connected to the first wall portion 131. For example, the first wall portion 131 and the connecting wall portion 522 of the second heat exchanger can be welded and sealed. The refrigerant channel 521 of the second heat exchanger has two openings at its connecting portion 100. These two openings respectively cooperate with the opening of the fifth connecting channel 115 in the first wall portion 131 and the opening of the third connecting channel 113 in the first wall portion 131. Thus, the third connecting channel 113 communicates with the refrigerant channel 521 of the second heat exchanger, and the fifth connecting channel 115 communicates with the refrigerant channel 521 of the second heat exchanger. The refrigerant discharged from the liquid storage chamber 107 is throttled by the throttling unit, evaporates and absorbs heat in the second heat exchanger 520, and then enters the second flow channel of the first heat exchanger 510.

[0028] Please see Figure 1 , Figure 3 as well as Figure 8The fluid management device 10 is provided with two throttling units, namely a first throttling unit 410 and a second throttling unit 420. Correspondingly, the second mounting part 150 includes a first mounting hole part 151 and a second mounting hole part 152. The first mounting hole part 151 has a first mounting hole 1511, and the second mounting hole part 152 has a second mounting hole 1521. At least a portion of the first throttling unit 410 is located in the first mounting hole 1511, and at least a portion of the second throttling unit 420 is located in the second mounting hole 1521. In this embodiment, the second connecting channel 112 has an opening in the first mounting hole part 151, and thus the second connecting channel 112 communicates with the first mounting hole 1511. The connecting portion 100 has a first channel 121 and a second channel 122. The first channel 121 has an opening in both the first mounting hole 151 and the second mounting hole 152, thereby connecting the first mounting hole 1511 and the second mounting hole 1521. Alternatively, the second connecting channel 112 connects the first mounting hole 1511, the first channel 121, and the second mounting hole 1521. In other words, refrigerant in the second connecting channel 112 can enter the first mounting hole 1511 and the second mounting hole 1521. The first throttling unit 410 enables the second connecting channel 112 to connect with the fifth connecting channel 115, and the second throttling unit 420 enables the second connecting channel 112 to connect with the second channel 122. The second channel 122 has an outlet on the outer wall of the connecting portion 100. Thus, the refrigerant flowing out of the first flow channel 511 of the first heat exchanger 510 is divided into two paths. One path enters the second heat exchanger 520 through the first throttling unit 410 for evaporation and heat absorption, while the other path enters the second channel 122 through the second throttling unit 422, and finally flows out of the fluid management device 10 through the second channel 122. In other embodiments, the fluid management device 10 may also be equipped with the first throttling unit 410, and the fifth connecting channel 115 may have two openings at the connection portion 100. One opening communicates with the refrigerant flow channel 521 of the second heat exchanger, and the other opening is used to communicate with other components in the system, which will not be described in detail here.

[0029] Please see Figure 1 , Figure 3 as well as Figures 6-8The fluid management device 10 also includes valve units, which include a first valve unit 310 and a second valve unit 320. Correspondingly, the mounting portion includes a third mounting portion 160, which includes a third mounting hole portion 161 and a fourth mounting hole portion 162. The third mounting hole portion 161 has a third mounting hole 1611, and the fourth mounting hole portion 162 has a fourth mounting hole 1621. At least a portion of the first valve unit 310 is located in the third mounting hole 1611, and at least a portion of the second valve unit 320 is located in the fourth mounting hole 1621. The connecting portion 100 has a sixth connecting channel 116 and a third channel 123. The sixth connecting channel 116 connects to the third mounting hole 1611, and the third channel 123 connects to the fourth mounting hole 1621. The first valve unit 310 can connect the sixth connecting channel 116 to the liquid storage chamber 107, and the second valve unit 320 can connect the third channel 123 to the liquid storage chamber 107. The first valve unit 310 and the second valve unit 320 can be either on / off valves or check valves. In this embodiment, the first valve unit 310 and the second valve unit 320 are check valves. That is, the first valve unit 310 enables the sixth connecting channel 116 to communicate unidirectionally with the liquid storage chamber 107, and the second valve unit 320 enables the third channel 123 to communicate unidirectionally with the liquid storage chamber 107. In a specific embodiment, the connecting portion 10 has a sixth channel 126 and an eighth connecting channel 118. The eighth connecting channel 118 has an opening formed in the first mounting portion 140 and communicates with the liquid storage chamber 107. The sixth channel 126 has openings formed in the third mounting hole portion 161 and the fourth mounting hole portion 162. The sixth connecting channel 116 communicates with the fourth mounting hole 1621 through the third mounting hole 1611 and the sixth channel 126. The first valve unit 310 enables the sixth connecting channel 116 to connect with the eighth connecting channel 118, and the second valve unit 320 enables the third channel 123 to connect with the eighth connecting channel 118.

[0030] The liquid storage section 200 is closer to the throttling unit than the first valve unit 310 and the second valve unit 320. In other words, the liquid storage section 200 is located between the valve unit 300 and the throttling unit 400. This allows the fluid management device 10 to be more compact and rationally laid out. It can be seen that in the refrigerant flow direction, the first valve unit 310 and the second valve unit 320 are located upstream of the liquid storage section 200. The first valve unit 310 and the second valve unit 320 can control the two flow paths entering the liquid storage chamber 107.

[0031] Please see Figure 1 , Figure 3 as well as Figures 6-8The fluid pipe device 10 includes a third heat exchanger 530 and a third valve unit 330. The third mounting portion 160 includes a fifth mounting hole portion 163, which has a fifth mounting hole 1631. At least a portion of the third valve unit 330 is located in the fifth mounting hole 1631. The connecting portion 100 has a fourth channel 124, a fifth channel 125, and a seventh connecting channel 117. The fourth channel 124, the fifth channel 125, and the seventh connecting channel 117 have openings in the fifth mounting hole portion 163. The third valve unit 330 is capable of communicating with at least one of the fifth channel 125 and the seventh connecting channel 117 through the fourth channel 124. In this embodiment, the fourth channel 124 is the inlet channel of the connecting portion 100, and the fifth channel 125 and the seventh connecting channel 117 are the outlet channels of the connecting portion 100. In this embodiment, the third heat exchanger 530 includes multiple stacked plates. The third heat exchanger 530 has a refrigerant flow channel 531 and a coolant flow channel. The connecting wall portion 532 of the third heat exchanger is directly or indirectly fixedly connected to the first wall portion 131. The sixth connecting channel 116 and the seventh connecting channel 117 both have openings on the first wall portion 131 facing the connecting portion 100 of the third heat exchanger 530. The refrigerant flow channel 531 of the third heat exchanger has two openings on the connecting wall portion 532 of the third heat exchanger. These two openings cooperate with the openings of the sixth connecting channel 116 and the seventh connecting channel 117 on the first wall portion 131, thereby enabling the sixth connecting channel 116 to communicate with the refrigerant flow channel 531 of the third heat exchanger, and the seventh connecting channel 117 to communicate with the refrigerant flow channel 531 of the third heat exchanger. The refrigerant that enters the fluid management device 10 through the fifth channel 125 can flow out of the fluid management device 10 through the fourth channel 124 by controlling the third valve unit 330, or enter the refrigerant channel of the third heat exchanger 530 through the seventh connecting channel 117, and then enter the liquid storage chamber 107 through the sixth connecting channel 116 and the first valve unit 310.

[0032] Please see Figure 1 , Figure 3 as well as Figures 6-8The valve unit also includes a fourth valve unit 340. The third mounting portion 160 includes a sixth mounting hole portion 164, which has a sixth mounting hole 1641. At least a portion of the fourth valve unit 340 is located in the sixth mounting hole 1641. The connecting portion 100 has a seventh channel 127, which has an opening in the sixth mounting hole portion 164. A third connecting channel 113 also has an opening in the sixth mounting hole portion 164. The fourth valve unit 340 is capable of communicating between the seventh channel 127 and the third connecting channel 113. The fourth valve unit 340 can be a switch valve or a check valve. When the fourth valve unit 340 is a check valve, it allows the seventh channel 127 to unidirectionally connect to the third connecting channel 113. When the fluid management device 10 includes a fourth valve unit 340, the refrigerant entering the second flow channel 512 of the first heat exchanger comes from the refrigerant flow channel 521 and the seventh channel 127 of the second heat exchanger. The fourth valve unit 340 can prevent the refrigerant of the second heat exchanger 520 from entering the seventh channel 127.

[0033] In one specific embodiment, the connecting portion 100 includes a second wall portion 132. Along the axial direction of the liquid storage portion, the second wall portion 132 is located on the opposite side of the first wall portion 131. The mounting holes of the first mounting portion 140, the second mounting portion 150, and the third mounting portion 160 have mounting openings on the second wall portion 132. In this way, the valve unit 300, the throttling unit 400, and the liquid storage portion 200 of the fluid management device 10 are mounted on the same side of the connecting portion 100, which facilitates the assembly of the fluid management device 10 and makes the fluid management device 10 more compact. Of course, the above-mentioned mounting holes can also be provided on other walls of the connecting portion 100, which will not be described in detail here.

[0034] Please see Figure 1 , Figure 2 as well as Figure 8 The fluid management device 10 has a first inlet 101, a second inlet 103, a third inlet 105, a first outlet 102, a second outlet 104, and a third outlet 106. The inlets and outlets can be located on a pipe or block connected to the connecting portion 100. In this embodiment, the inlets and outlets are located on the connecting portion 100. The first inlet 101 communicates with the fifth channel 125, the first outlet 102 communicates with the fourth connecting channel 114, the second inlet 103 communicates with the third channel 123, the second outlet 104 communicates with the fourth channel 124, the third outlet 106 communicates with the second channel 122, and the third inlet 105 communicates with the seventh channel 127.

[0035] Please see Figure 10In a second embodiment of the fluid management device 10, the fluid management device 10 may also exclude the second heat exchanger 520. In this case, the opening formed by the fifth connecting channel 115 at the connecting portion 100 is an outlet of the fluid management device 10, and the opening formed by the third connecting channel 113 at the connecting portion 100 is an inlet of the fluid management device 10.

[0036] Please see Figure 11 In a third embodiment of the fluid management device 10, the fluid management device 10 may not include the third heat exchanger 530. In this case, the opening formed at the connection portion 100 by the sixth connecting channel 116 serves as an inlet for the fluid management device 10, and the opening formed at the connection portion 100 by the seventh connecting channel 117 serves as an outlet for the fluid management device 10. Of course, the fluid management device may also not include the second heat exchanger 520 and the third heat exchanger 530. Please refer to [link to relevant documentation]. Figure 9 , will not be described in detail.

[0037] Please see Figure 1 , Figure 2 as well as Figure 8 and Figure 12 This application also provides a thermal management system for use in a vehicle. The thermal management system includes a compressor 11, a fluid management device, a fourth heat exchanger 2, and a fifth heat exchanger 3. The fifth heat exchanger 3 is located in the vehicle's air conditioning unit. The outlet of the compressor 1 is connected to a first inlet 101, and the inlet of the compressor 1 is connected to a first outlet 102. The second outlet 104 is connected to a second inlet 103 via the fourth heat exchanger 22, and the third outlet 106 is connected to a third inlet 105 via the fifth heat exchanger 3. The fluid management device 10 integrates a heat exchange section, a valve unit, a throttling unit, and a liquid storage section 200, thus simplifying the connection of the thermal management system.

[0038] In the cooling mode of the thermal management system, the third valve unit 330 connects the first inlet 101 to the second outlet 104. High-temperature, high-pressure refrigerant releases heat in the fourth heat exchanger 2, and then the refrigerant enters the fluid management device 10 through the second inlet 103. The second valve unit 320 connects the second inlet 103 to the liquid storage chamber 107, allowing the relatively liquid refrigerant to enter the first flow channel 511 of the first heat exchanger 510. The refrigerant then passes through the first throttling unit 410 and enters the second heat exchanger 520 to evaporate and absorb heat, and / or the refrigerant passes through the second... The refrigerant from the throttling unit 420 enters the fifth heat exchanger 3 for evaporation and heat absorption. The refrigerant from the second heat exchanger 520 enters the second flow channel of the first heat exchanger 510 through the third connecting channel 113, and finally enters the inlet of the compressor 1 through the first outlet 102. The refrigerant from the fifth heat exchanger 3 enters the fluid management device 10 through the third inlet 105. The fourth valve unit 340 connects the third inlet 105 with the third connecting channel 113, and then enters the second flow channel of the first heat exchanger 510, and finally enters the inlet of the compressor 1 through the first outlet 102.

[0039] In the heating mode of the thermal management system, the third valve unit 330 connects the first inlet 101 with the refrigerant flow channel of the third heat exchanger 530. The high-temperature and high-pressure refrigerant releases heat in the third heat exchanger 530, and then the refrigerant enters the liquid storage chamber 107 through the first valve unit 310. The relatively liquid refrigerant enters the first flow channel of the first heat exchanger 510. The subsequent flow path of the refrigerant is consistent with the cooling mode of the thermal management system, and will not be described in detail.

[0040] 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 fluid management device, comprising a connecting portion, a throttling unit, a heat exchange portion, and a liquid storage portion, wherein the heat exchange portion includes a first heat exchanger having a first flow channel and a second flow channel, the first flow channel and the second flow channel being non-communicating, and the first heat exchanger being fixedly connected to or limited by the connecting portion; the fluid management device having a liquid storage cavity, the connecting portion including a mounting portion, the mounting portion including a first mounting portion and a second mounting portion, the first mounting portion being fixedly connected to or limited by the liquid storage portion, at least a portion of the liquid storage cavity being located within the liquid storage portion, and at least a portion of the throttling unit being located in a mounting hole of the second mounting portion; The connecting part has a first connecting channel, a second connecting channel, a third connecting channel and a fourth connecting channel. The first connecting channel has an opening formed in the wall of the first mounting part and communicates with the liquid storage chamber. The second connecting channel has an opening formed in the wall of the second mounting part. The first connecting channel communicates with the second connecting channel through the first flow channel. The third connecting channel communicates with the fourth connecting channel through the second flow channel.

2. The fluid management device according to claim 1, characterized in that, Along the axial direction of the liquid storage portion, at least a portion of the liquid storage portion is located on one side of the connecting portion, and the first heat exchanger is located on the opposite side of the connecting portion; the connecting portion includes a first wall portion, which is fixedly connected or limitedly connected to the first heat exchanger; the first connecting channel, the second connecting channel, the third connecting channel, and the fourth connecting channel all have openings on the first wall portion facing the first heat exchanger.

3. The fluid management device according to claim 2, characterized in that, The heat exchange section includes a second heat exchanger, which is fixedly connected or limited to the first wall of the connecting section. The connecting section includes a fifth connecting channel, which can be connected to the fifth connecting channel by adjusting the throttling unit. The fifth connecting channel has an opening in the first wall facing the second heat exchanger, and the fifth connecting channel is connected to the third connecting channel through the second heat exchanger.

4. The fluid management device according to claim 3, characterized in that, The throttling unit includes a first throttling unit and a second throttling unit. The second mounting portion includes a first mounting hole portion and a second mounting hole portion. The first mounting hole portion has a first mounting hole, and the second mounting hole portion has a second mounting hole. At least a portion of the first throttling unit is located in the first mounting hole, and at least a portion of the second throttling unit is located in the second mounting hole. The second communicating channel has an opening in the first mounting hole portion. The connecting part has a first channel and a second channel. The first channel has an opening in the first mounting hole and the second mounting hole. The second connecting channel communicates with the first mounting hole, the first channel and the second mounting hole. The first throttling unit enables the second connecting channel to communicate with the fifth connecting channel, and the second throttling unit enables the second connecting channel to communicate with the second channel.

5. The fluid management device according to any one of claims 2-4, characterized in that, The fluid management device includes valve units, which include a first valve unit and a second valve unit. The mounting portion includes a third mounting portion, which includes a third mounting hole portion and a fourth mounting hole portion. The third mounting hole portion has a third mounting hole, and the fourth mounting hole portion has a fourth mounting hole. At least a portion of the first valve unit is located in the third mounting hole, and at least a portion of the second valve unit is located in the fourth mounting hole. The liquid storage portion is closer to the throttling unit than the first valve unit and the second valve unit. The connecting part has a sixth connecting channel and a third channel. The sixth connecting channel is connected to the third mounting hole, and the third channel is connected to the fourth mounting hole. The first valve unit enables the sixth connecting channel to communicate with the liquid storage chamber, and the second valve unit enables the third channel to communicate with the liquid storage chamber.

6. The fluid management device according to claim 5, characterized in that, The fluid management device includes a third valve unit and a third heat exchanger. The third mounting portion includes a fifth mounting hole portion, the fifth mounting hole portion having a fifth mounting hole, and at least a portion of the third valve unit is located in the fifth mounting hole. The connecting portion has a fourth channel, a fifth channel, and a seventh connecting channel, and the fourth channel, the fifth channel, and the seventh connecting channel have openings formed in the fifth mounting hole portion. The third valve unit is capable of communicating with at least one of the fifth channel and the seventh connecting channel with the fourth channel. The third heat exchanger is directly or indirectly fixedly connected to the first wall portion. The sixth and seventh connecting channels each have an opening in the first wall portion facing the third heat exchanger. The sixth connecting channel is connected to the seventh connecting channel through the third heat exchanger.

7. The fluid management device according to claim 6, characterized in that, The connecting part has a sixth channel and an eighth connecting channel. The eighth connecting channel communicates with the liquid storage chamber. The sixth channel has an opening formed in the third mounting hole and the fourth mounting hole. The sixth connecting channel communicates with the fourth mounting hole through the third mounting hole and the sixth channel. The first valve unit enables the sixth connecting channel to connect with the eighth connecting channel, and the second valve unit enables the third channel to connect with the eighth connecting channel.

8. The fluid management device according to claim 7, characterized in that, The first mounting portion has a mounting hole, a portion of the liquid storage portion is located in the mounting hole formed by the first mounting portion, the eighth communicating channel has an opening in the wall of the first mounting portion, and the first communicating channel has an opening in the wall of the first mounting portion.

9. The fluid management device according to any one of claims 6-8, characterized in that, The valve unit further includes a fourth valve unit, the third mounting portion includes a sixth mounting hole portion, the sixth mounting hole portion has a sixth mounting hole, at least a portion of the fourth valve unit is located in the sixth mounting hole; the connecting portion has a seventh channel, the seventh channel has an opening formed in the wall of the sixth mounting hole portion, the third connecting channel has an opening formed in the sixth mounting hole portion, and the fourth valve unit is capable of communicating with the seventh channel and the third connecting channel.

10. The fluid management device according to claim 9, characterized in that, The connecting portion includes a second wall portion. Along the axial direction of the liquid storage portion, the first wall portion is located on one side of the connecting portion, and the second wall portion is located on the opposite side of the connecting portion. The mounting holes of the first mounting portion, the second mounting portion, and the third mounting portion form mounting openings in the second wall portion.

11. The fluid management device according to claim 10, characterized in that, The fluid management device has a first inlet, a second inlet, a third inlet, a first outlet, a second outlet, and a third outlet. The first inlet is connected to the fifth channel, the first outlet is connected to the fourth connecting channel, the second inlet is connected to the third channel, the second outlet is connected to the fourth channel, the third outlet is connected to the second channel of the connecting part, and the third inlet is connected to the seventh channel.

12. A thermal management system, comprising a compressor, a fluid management device, a fourth heat exchanger, and a fifth heat exchanger, wherein the fluid management device is the fluid management device as described in any one of claims 1-11, the fluid management device having a first inlet, a second inlet, a third inlet, a first outlet, a second outlet, and a third outlet, wherein the outlet of the compressor is connected to the first inlet, the inlet of the compressor is connected to the first outlet, the second outlet is connected to the second inlet via the fourth heat exchanger, and the third outlet is connected to the third inlet via the fifth heat exchanger.

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