Fluid management device

Abstract

A fluid management device includes a control assembly, at least two block portions and at least two spool assemblies, the at least two block portions are sealingly connected to the same control assembly, the spool assemblies are electrically connected to the control assembly; each block portion includes a body portion having a mounting channel, one spool assembly has a portion located in an inner cavity of the control assembly and another portion located in the mounting channel, and a gap is provided between adjacent two body portions. In the present application, the block portions are sealingly connected to the same control assembly, one spool assembly has a portion located in an inner cavity of the control assembly and another portion located in the mounting channel of the body portion, and a gap is provided between adjacent two body portions, and the body portion is separated from the body portion, thereby reducing the possibility of heat transfer and reducing the harmful heat loss of the fluid management device.

Description

Technical Field

[0001] This application relates to the field of fluid management technology, and more particularly to a fluid management device. Background Technology

[0002] The thermal management system includes components such as a compressor, an internal heat exchanger, and an external heat exchanger. These components are connected by pipelines, and the refrigerant circulates in the pipelines. Heat exchange is achieved through changes in the temperature and pressure of the refrigerant, thereby realizing the cooling or refrigeration function within the space. Valves, such as expansion valves and solenoid valves, are installed at various locations on the pipelines to control the opening and closing of the pipelines and the direction of refrigerant flow.

[0003] In related technologies, to reduce the space occupied by valve components, multiple valve cores are installed on the same valve seat and connected through channels inside the valve seat. Because these channels are close together, the fluids in different channels conduct heat, resulting in significant harmful heat loss. Alternatively, related technologies install multiple valve cores on adjacent valve body sections of a flow channel plate. Since the valve body sections of the flow channel plate are directly connected, the fluids in adjacent valve body sections conduct heat to each other through the flow channel plate, causing mutual interference. Summary of the Invention

[0004] In view of the above-mentioned problems in the related technologies, this application provides a fluid management device that can reduce harmful heat loss.

[0005] To achieve the above objectives, this application adopts the following technical solution: a fluid management device, comprising: a control component, at least two block portions and at least two valve core assemblies, wherein the at least two block portions are sealed to the same control component, and the valve core assemblies are electrically connected to the control component; each block portion includes a body portion having a mounting channel, one valve core assembly having a portion located in the inner cavity of the control component and another portion located in the mounting channel, and a gap between adjacent two body portions.

[0006] In this application, the block part is sealed to the same control component, a valve core assembly has part located in the inner cavity of the control component and another part located in the mounting channel of the body part, there is a gap between two adjacent body parts, the body parts are separated from each other, reducing the possibility of heat transfer, thereby reducing the harmful heat loss of the fluid management device. Attached Figure Description

[0007] Figure 1 This is a perspective view of an embodiment of the fluid management device of this application;

[0008] Figure 2 This is an exploded view of an embodiment of the fluid management device of this application;

[0009] Figure 3 This is a further exploded schematic diagram of an embodiment of the fluid management device of this application;

[0010] Figure 4 This is a cross-sectional schematic diagram of an embodiment of the fluid management device of this application;

[0011] Figure 5 This is a cross-sectional schematic diagram of an embodiment of the block portion of this application;

[0012] Figure 6 This is a cross-sectional schematic diagram of another embodiment of the block portion of this application;

[0013] Figure 7 This is a cross-sectional schematic diagram of another embodiment of the block portion of this application;

[0014] Figure 8 This is a perspective view of another embodiment of the fluid management device of this application;

[0015] Figure 9 This is an exploded schematic diagram of another embodiment of the fluid management device of this application. Detailed Implementation

[0016] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0017] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0018] It should be understood that the terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one; "multiple" indicates two or more. Unless otherwise stated, terms such as "front," "rear," "lower," and / or "upper" are for illustrative purposes only and are not limited to a location or spatial orientation. Terms such as "comprising" or "including" indicate that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including" and their equivalents, but do not exclude other elements or objects.

[0019] The fluid management device of an exemplary embodiment of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations may complement or combine with each other.

[0020] According to one embodiment of the fluid management device of this application, referring to Figures 1 to 6 The fluid management device includes a control component 1, at least two block sections 2, and at least two valve core assemblies 4. Each valve core assembly 4 corresponds one-to-one with a block section 2. The block sections 2 are separately arranged, and each block section 2 is installed and sealed to the same control component 1. A portion of each valve core assembly 4 is located within the cavity of the control component 1, and another portion is located within the cavity of each block section 2. The valve core assembly 4 is installed and fixed by at least one of the control component 1 and the block sections 2. The number of block sections 2 and valve core assemblies 4 is determined according to system requirements.

[0021] The control assembly 1 includes a first housing 11, a second housing 12, and a circuit board 13. The first housing 11 and the second housing 12 are mounted together. The control assembly 1 has an assembly cavity 10 located between the first housing 11 and the second housing 12. The circuit board 13 is located in the assembly cavity 10 and is electrically connected to the valve core assembly 4. Optionally, both the first housing 11 and the second housing 12 are made of plastic, which has the advantages of being lightweight, easy to shape, and having good insulation.

[0022] In this application, the valve core assembly 4 is a standardized component, and the structure of each valve core assembly 4 is roughly the same, but the detailed structure can be adjusted according to specific needs. Each valve core assembly 4 includes a connecting part 401 and a valve core part 402. The valve core part 402 includes a housing part 403 and a valve needle 404. The housing part 403 is fixedly disposed, and the connecting part 401 is fixed and electrically connected to the circuit board 13. The connecting part 401 is fixed and electrically connected to the housing part 403. The valve needle 404 is located in the inner cavity of the housing part 403, and the valve needle 404 can move along the axial direction of the valve core assembly 4, so that the end part of the valve needle 404 approaches or moves away from the block part 2.

[0023] The housing 403 includes a stator assembly and a rotor assembly. The stator assembly is sleeved on the outside of the rotor assembly, with a gap between them. The valve needle 404 is located inside the rotor assembly. When the stator assembly is energized, it generates a magnetic field. This magnetic field causes some components of the rotor assembly to rotate, and these rotating components drive the valve needle 404 to move up and down. The stator assembly is located in the assembly cavity 10 and is fixed to the second housing 12. The connecting part 401 is fixed to and electrically connected to the stator assembly. Part of the rotor assembly is located in the assembly cavity 10, and another part is located in the mounting channel 20. The rotor assembly is fixed to the block part 2.

[0024] During assembly, the stator assembly is assembled with the second housing 12, the rotor assembly is assembled with the block part 2, and the block part 2 and the first housing 11 are respectively assembled with the second housing 12.

[0025] In this application, the valve core assembly 4 includes mechanical parts but not electrical control parts. The electrical control parts that control the movement of the valve core assembly 4 are all located on the control assembly 1. In some embodiments, the connection parts 401 of all valve core assemblies 4 are fixed and electrically connected to the same circuit board 13, and the electrical control parts corresponding to all valve core assemblies 4 are located on the same circuit board 13. Controlling all valve core assemblies 4 through the circuit on a single circuit board 13 can improve integration, facilitate the miniaturization of the control assembly 1, and optimize the control logic.

[0026] It should be understood that the control component 1, a valve core component 4, and a block part 2 together can realize the function of an expansion valve or a solenoid valve. The structure of the valve needle 404 corresponding to the expansion valve and the solenoid valve is different, and the corresponding valve needle 404 structure can be selected according to the system requirements.

[0027] The first housing 11 or the second housing 12 includes a plug-in portion 121, which is used to cooperate with other plug-in structures to realize electrical connection between the control component 1 and other components outside the fluid management device. The fluid management device is provided with a plurality of pins 122, which are fixedly connected to the plug-in portion 121, fixedly connected to the circuit board 13, and also in contact with and electrically connected to other components outside the fluid management device.

[0028] The circuit board 13 includes a board body 131, a plurality of first holes 132, and a plurality of second holes 133. The cavities of the first holes 132 and the second holes 133 penetrate the board body 131 along its thickness direction. The control chip and other electronic components are disposed on the board body 131. The connecting portion 401 of the valve core assembly 4 is partially located in the cavity of the first hole 132, and the connecting portion 401 is fixedly connected to the first hole 132. The first hole 132 and the connecting portion 401 correspond one-to-one. The pin 122 of the plug-in portion 121 is partially located in the cavity of the second hole 133, and the pin 122 is fixedly connected to the first hole 132. Optionally, the board body 131 is a single piece, and all connecting portions 401 of the valve core assembly 4 are fixedly and electrically connected to the board body 131.

[0029] In this application, the block portion 2 is a standardized component. In this embodiment, the structure of each block portion 2 is generally the same, but the detailed structure can be adjusted according to specific needs. Each block portion 2 includes a body portion 201 and at least one interface portion 202. The body portion 201 and the interface portion 202 are connected. The interface portion 202 has an interface channel for connecting to a pipeline, and the interface channel communicates with the cavity of the pipeline. The body portion 201 has a mounting channel 20, and a portion of the housing portion 403 of the valve core assembly 4 is located in the mounting channel 20. In some embodiments, along the axial direction of the valve core assembly 4, one end of the housing portion 403 abuts against the circuit board 13, and the other end of the housing portion 403 abuts against the hole wall located on the periphery of the mounting channel 20. The circuit board 13 is fixedly disposed with the first housing 11 or the second housing 12, and the block portion 2 is fixedly connected with the second housing 12, thereby achieving the limiting and fixing of the housing portion 403 in the axial direction of the valve core assembly 4. In some other embodiments, the shell portion 403 may be limited only by the second shell 12, as long as the shell portion 403 can be limited and fixed, this application does not impose any restrictions. Optionally, the block portion 2 is a single piece.

[0030] In some embodiments, each block portion 2 includes an extension 203, which extends outward from the periphery of the body portion 201 near the second shell 12 and is sealingly connected to the second shell 12. The extension 203 is generally annular and surrounds the body portion 201. The extension 203 is generally plate-shaped, and the extension 203 and the second shell 12 are in surface-to-surface contact, which can improve the assembly reliability between the block portion 2 and the second shell 12. Optionally, the extension 203 is provided with a groove for receiving a sealing ring, which can improve the sealing performance between the extension 203 and the second shell 12.

[0031] In some embodiments, the block portion 2 has two interfaces, as shown in the reference. Figure 5The block portion 2 includes a first interface portion 204 and a second interface portion 205. The first interface portion 204 is located on the side of the block portion 2 away from the control component 1, and the second interface portion 205 is located on the periphery of the block portion 2. Both the first interface portion 204 and the second interface portion 205 protrude outward from the body portion 201. Both the first interface portion 204 and the second interface portion 205 are connected to the body portion 201. The first interface portion 204 has a first interface channel 40, and the second interface portion 205 has a second interface channel 50. The body portion 201 has a connecting channel 30, and the second interface channel 50 communicates with the connecting channel 30.

[0032] In some embodiments, the block portion 2 has two interfaces, as shown in the reference. Figure 6 The block portion 2 includes a first interface portion 204, which is located on the side of the block portion 2 away from the control component 1 and protrudes outward from the body portion 201. The first interface portion 204 is connected to the body portion 201 and has a first interface channel 40 and a third interface channel 60, which are not connected within the first interface portion 204. The body portion 201 has a connecting channel 30, and the third interface channel 60 is connected to the connecting channel 30.

[0033] In some embodiments, the block portion 2 has three interfaces, as shown in the reference. Figure 6 The block portion 2 includes a first interface portion 204 and a second interface portion 205. The first interface portion 204 is located on the side of the block portion 2 away from the control component 1, and the second interface portion 205 is located on the periphery of the block portion 2. Both the first interface portion 204 and the second interface portion 205 protrude outward from the body portion 201. Both the first interface portion 204 and the second interface portion 205 are connected to the body portion 201. The first interface portion 204 has a first interface channel 40 and a third interface channel 60, and the second interface portion 205 has a second interface channel 50. The body portion 201 has a connecting channel 30, and both the second interface channel 50 and the third interface channel 60 communicate with the connecting channel 30.

[0034] In some embodiments, the block portion 2 has three interfaces, as shown in the reference. Figure 7 The block portion 2 includes a first interface portion 204 and a second interface portion 205. The first interface portion 204 is located on the side of the block portion 2 away from the control component 1, and the second interface portion 205 is located on the periphery of the block portion 2. Both the first interface portion 204 and the second interface portion 205 protrude outward from the body portion 201. Both the first interface portion 204 and the second interface portion 205 are connected to the body portion 201. The first interface portion 204 has a first interface channel 40, and the second interface portion 205 has two second interface channels 50. The body portion 201 has a connecting channel 30, and each second interface channel 50 communicates with the connecting channel 30.

[0035] In some embodiments, the block portion 2 has four interfaces, as shown in the reference. Figure 7 The block portion 2 includes a first interface portion 204 and a second interface portion 205. The first interface portion 204 is located on the side of the block portion 2 away from the control component 1, and the second interface portion 205 is located on the periphery of the block portion 2. Both the first interface portion 204 and the second interface portion 205 protrude outward from the body portion 201. Both the first interface portion 204 and the second interface portion 205 are connected to the body portion 201. The first interface portion 204 has a first interface channel 40 and a third interface channel 60, and the second interface portion 205 has at least two second interface channels 50. The body portion 201 has a connecting channel 30, and the third interface channel 60 and each second interface channel 50 are connected to the connecting channel 30.

[0036] When the block part 2 has three or more interfaces, the block part 2 has the function of a multi-pass component. The block part 2 can divert the fluid flowing out of the first interface channel 40 to the second interface channel 50 and / or the third interface channel 60, or can make the fluid flowing out of the second interface channel 50 and / or the third interface channel 60 converge to the first interface channel 40.

[0037] In the aforementioned block part 2, when the valve core assembly 4 is in the first state, the valve needle 404 abuts against the first interface part 204, and the valve needle 404 blocks one end of the first interface channel 40. The first interface channel 40 and the connecting channel 30 are isolated from each other at the valve needle 404. When the valve core assembly 4 is in the second state, the valve needle 404 is spaced a certain distance from the first interface part 204, and the first interface channel 40 is connected to the connecting channel 30, thereby realizing the function of an expansion valve or a solenoid valve.

[0038] Depending on the system requirements, the block part 2 may only have the first interface part 204, or it may have both the first interface part 204 and the second interface part 205. By setting the number of the second interface channel 50 and the third interface channel 60, the function of the multi-channel component can be realized.

[0039] In this application, the use of standardized valve core assembly 4 and block part 2 facilitates product standardization, reduces the number of molds required, lowers costs, simplifies product structure, facilitates manufacturing, and reduces assembly difficulty. The interface parts 202 are arranged in the same direction, which is beneficial for pipeline layout design, reduces space occupation, and facilitates integration.

[0040] Reference Figure 3 The two adjacent block parts 2 are set separately, each block part 2 is formed independently, and then each is installed and fixed to the same control component 1, with a gap between the adjacent body parts 201. This arrangement can reduce the possibility of heat transfer between the body parts 201 while achieving integration, reducing harmful heat loss and improving system performance. Optionally, the second shell 12 is a single piece.

[0041] The main body 201 is a hollow cylindrical structure with a roughly annular cross-section. This allows it to occupy as little space as possible while maintaining maximum strength, which is beneficial for miniaturizing the fluid management device.

[0042] The fluid management device includes several pipe fittings 3, each pipe fitting 3 being a hollow cylindrical structure. One end of each pipe fitting 3 is sealed to an interface 202 of one block portion 2, and the other end is sealed to an interface 202 of another block portion 2. The inner cavity of the pipe fitting 3 enables communication between the inner cavities of the two block portions 2. For example, see... Figure 4 One end of the pipe fitting 3 is sealed to the first interface portion 204 of a block portion 2, and the other end of the same pipe fitting 3 is sealed to the first interface portion 204 of another block portion 2. The inner cavity of the pipe fitting 3 connects the first interface channel 40 of one block portion 2 and the third interface channel 60 of another block portion 2. Alternatively, one end of the pipe fitting 3 can be sealed to the first interface portion 204 of one block portion 2, and the other end of the pipe fitting 3 can be sealed to the second interface portion 205 of another block portion 2. The inner cavity of the pipe fitting 3 connects the first interface channel 40 of one block portion 2 and the second interface channel 50 of another block portion 2. The block portions 2 are connected by the pipe fitting 3. Compared with setting channels in a large, one-piece molded block structure, this can reduce weight and heat loss. Furthermore, the pipe fitting 3 is a standardized component, and only a suitable length of the pipe fitting 3 needs to be selected, which can reduce manufacturing difficulty.

[0043] Taking a fluid management device comprising two valve core assemblies 4, two block parts 2, and a pipe fitting 3 as an example, such as Figures 1 to 4 As shown, the fluid management device includes a control component 1, a first valve core assembly 41, a second valve core assembly 42, a first block portion 21, a second block portion 22, and a first pipe fitting 31. The first block portion 21 and the second block portion 22 are both installed and fixed to the second housing 12 of the control component 1. The extension 203 of the first block portion 21 and the extension 203 of the second block portion 22 are both sealed and connected to the second housing 12.

[0044] like Figure 3 and Figure 4 As shown, the extension 203 of the first block portion 21 and the extension 203 of the second block portion 22 are fitted together, but there is a gap between the main body portion 201 of the first block portion 21 and the main body portion 201 of the second block portion 22, and they do not contact each other. By providing the extension 203, the connection reliability between the block portion 2 and the second shell 12 can be improved, and the distance between two adjacent block portions 2 can be limited, reducing the installation difficulty and improving the assembly accuracy.

[0045] The first valve core assembly 41 is partially located in the assembly cavity 10 of the control assembly 1, and the other part is located in the mounting channel 20 of the first block portion 21. The second valve core assembly 42 is partially located in the assembly cavity 10 of the control assembly 1, and the other part is located in the mounting channel 20 of the second block portion 22. The connecting portion 401 of the first valve core assembly 41 and the connecting portion 401 of the second valve core assembly 42 are both fixed and electrically connected to the circuit board 13, and the board body 131 of the circuit board 13 is an integral structure. The first valve core assembly 41 and the second valve core assembly 42 are spaced apart from each other in the assembly cavity 10. The first valve core assembly 41 is fixed to at least one of the second shell 12 and the first block portion 21, and the second valve core assembly 42 is fixed to at least one of the second shell 12 and the second block portion 22.

[0046] Control component 1, first valve core assembly 41, and first block portion 21 together can realize the function of an expansion valve or a solenoid valve. Control component 1, second valve core assembly 42, and second block portion 22 together can realize the function of an expansion valve or a solenoid valve. In this embodiment, the first valve core assembly 41 and the second valve core assembly 42 have basically the same structure, and the valve needle 404 can be set to achieve different functions according to system requirements. The first block portion 21 and the second block portion 22 have basically the same structure, and the interface portion 202 can be set to facilitate the connection of pipelines according to system requirements.

[0047] In some other embodiments, the fluid management device may further include valve core assemblies 4, block portions 2, and pipe fittings 3. For example... Figure 3 and 4 As shown, the fluid management device may include seven valve core assemblies 4, seven block sections 2, and six pipe fittings 3. The control component 1 includes a circuit board 13. The seven valve core assemblies 4 are a first valve core assembly 41, a second valve core assembly 42, a third valve core assembly 43, a fourth valve core assembly 44, a fifth valve core assembly 45, a sixth valve core assembly 46, and a seventh valve core assembly 47. The seven block sections 2 are a first block section 21, a second block section 22, a third block section 23, a fourth block section 24, a fifth block section 25, a sixth block section 26, and a seventh block section 27. The six pipe fittings 3 are a first pipe fitting 31, a second pipe fitting 32, a third pipe fitting 33, a fourth pipe fitting 34, a fifth pipe fitting 35, and a sixth pipe fitting 36. The seven block sections 2 are all separately arranged and are respectively sealed and connected to the second shell 12. The structures of the seven block sections 2 are generally the same, and the extensions 203 of two adjacent block sections 2 are in contact with each other. The connecting parts 401 of the seven valve core assemblies 4 are all fixed and electrically connected to the same circuit board 13, and the two ends of each tube 3 are respectively connected to two adjacent block parts 2. According to the function of the valve core assembly 4 in the system, a suitable valve needle 404 structure is selected; according to whether the block part 2 needs to have a multi-port function, the number of second interface channels 50 and third interface channels 60 is selected.

[0048] In this embodiment, refer to Figure 3 Seven valve core assemblies 4 are arranged in a line along the length of the control assembly 1. Correspondingly, seven block sections 2 are also arranged in a line along the length of the control assembly 1. The valve core assemblies 4 are placed as close as possible to each other, and the structure of the block sections 2 is kept as simple as possible, making the structure of the fluid management device more compact. This also shortens the length of the system piping and improves the system's response time and performance. Six pipe fittings 3 are all connected to the first interface section 204. All pipe fittings 3 are located on the same side of the fluid management device, and each pipe fitting 3 is approximately U-shaped, which facilitates pipe connection. The body sections 201 of adjacent block sections 2 are separated, which helps to reduce harmful heat loss and improve performance. Integrating the valves together saves space for the overall vehicle layout, while improving installation efficiency and reducing costs.

[0049] In one possible embodiment, refer to Figure 8 and Figure 9 Multiple valve core assemblies 4 can be arranged in two rows or in a matrix. The multiple valve core assemblies 4 and multiple block parts 2 are staggered to make the space occupied smaller, or the pipe fittings 3 are arranged more reasonably, etc.

[0050] In one possible embodiment, refer to Figure 8 and Figure 9 The structure of block part 2 is completely standardized, and the structure of all block parts 2 is completely identical. Block part 2 is provided with a first interface part 204, which has a first interface channel 40 and a third interface channel 60. Block part 2 is not provided with a second interface part 205.

[0051] In this embodiment, the fluid management device includes several pipe fittings 3, several multi-port components 5, and several connecting blocks 6. The connecting blocks 6 are generally block-shaped and are used for connecting and communicating with pipelines outside the fluid management device. The multi-port components 5 are also generally block-shaped and have at least three interfaces, each interface connecting to one pipe fitting 3, for connecting and communicating between the pipe fittings 3. The connecting blocks 6 and multi-port components 5 are small in size, achieving both connection and communication functions with a smaller structure, reducing space occupation and improving integration. Optionally, all interfaces of the connecting blocks 6 face the same direction to facilitate connection with external pipelines.

[0052] The inner cavities of any two block parts 2 are connected by pipe fittings 3 and multi-way components 5. The inner cavity of block part 2 is connected to the inner cavity of connecting block 6 by pipe fittings 3 and multi-way components 5. The connection relationship between each block part 2, the number of block parts 2, the number of connecting blocks 6, the number of pipe fittings 3, and the number of multi-way components 5 can be selected according to the system design requirements.

[0053] It should be understood that the accompanying drawings of this application are merely illustrative and should not be construed as meaning that the components in the fluid management device can only be arranged as shown in the figures, nor should they be construed as only having the shapes shown in the figures.

[0054] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A fluid management device, characterized in that, include: The control component, at least two block parts, and at least two valve core assemblies, wherein the at least two block parts are sealed to the same control component, and the valve core assemblies are electrically connected to the control component; The two adjacent block parts are separately arranged, each block part includes a body part, the body part has a mounting channel, a valve core assembly has a portion located in the inner cavity of the control assembly, and another portion located in the mounting channel, and there is a gap between the two adjacent body parts.

2. The fluid management device as described in claim 1, characterized in that, The control component includes a first shell, a second shell, and a circuit board. The first shell and the second shell are sealed together. The control component has an assembly cavity located between the first shell and the second shell. The circuit board is located in the assembly cavity. The at least two block parts are connected to the second shell, which is a single piece. The valve core assembly is partially located in the assembly cavity. The valve core assembly is electrically connected to the circuit board. The control assembly includes a control chip mounted on the circuit board. The control chip is used to control the movement of the valve core assembly. The control chip includes an electronic control part for controlling the movement of the valve core assembly. The circuit board includes a board body, and the at least two valve core assemblies are electrically connected to the board body, which is a single piece.

3. The fluid management device as described in claim 2, characterized in that, Each valve core assembly includes a connecting portion and a valve core portion, the connecting portion being fixed and electrically connected to the circuit board, and the connecting portion being fixed and electrically connected to the valve core portion; Along the axial direction of the valve core assembly, one end of the valve core portion engages with the circuit board or the second housing, and the other end of the valve core portion engages with the block portion.

4. The fluid management device as described in claim 3, characterized in that, Each valve core includes a housing and a valve needle. One end of the housing engages with the circuit board or the second housing, and the other end of the housing engages with the block portion. The valve needle is at least partially located within the cavity of the housing and is movable along the axial direction of the valve core assembly.

5. The fluid management device as described in claim 4, characterized in that, The block portion includes at least one interface portion, the body portion is connected to the interface portion, the body portion has a connecting channel, a portion of the shell portion is located in the mounting channel, the interface portion has an interface channel, and the connecting channel can communicate with the interface channel.

6. The fluid management device as described in claim 5, characterized in that, The at least one interface portion includes a first interface portion located on the side of the block portion away from the control component, the first interface portion being connected to the body portion, and the first interface portion having a first interface channel; When the valve core assembly is in the first state, the valve needle abuts against the first interface portion, the valve needle blocks one end of the first interface channel, and the connecting channel is isolated from the first interface channel at the valve needle; when the valve core assembly is in the second state, the valve needle is spaced a certain distance from the first interface portion, and the connecting channel is connected to the first interface channel.

7. The fluid management device as described in claim 5 or 6, characterized in that, The at least one interface portion includes a second interface portion, the second interface portion is located on the periphery of the block portion, the second interface portion is connected to the body portion, and the second interface portion has at least one second interface channel, the second interface channel being connected to the communication channel.

8. The fluid management device as claimed in claim 6, characterized in that, The first interface portion has at least one third interface channel, which is connected to the communication channel.

9. The fluid management device as claimed in claim 1, characterized in that, The fluid management device includes at least one pipe fitting, one end of which is sealed to one of the block portions, and the other end of the same pipe fitting is sealed to another block portion. The inner cavity of one pipe fitting communicates with the inner cavities of any two of the block portions.

10. The fluid management device as claimed in claim 1, characterized in that, The block portion includes an extension portion that extends from the side of the main body portion near the control component toward the periphery, and the extension portion is sealed to the control component; the block portion is a single piece.

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