Fluid control device and its manufacturing method, and drive unit

Abstract

The present invention discloses a fluid control device and a manufacturing method thereof, and a drive unit, the fluid control device including a drive unit and at least two fluid subunits, the drive unit having a first accommodating cavity, the drive unit including a first housing and a drive member, the drive member driving a corresponding fluid subunit to operate, the first housing including a bottom wall portion and a position limiting portion, the bottom wall portion forming a part of the wall portion of the first accommodating cavity, at least a part of the position limiting portion protruding from the bottom wall portion, at least one drive member including a stator unit, the drive member including the stator unit being defined as a first drive member, at least a part of the first drive member being connected to be positionally restricted within the position limiting portion, at least one other drive member being connected to be positionally restricted to the first housing, the at least one fluid subunit including a pump unit, the pump unit including a rotor unit, the magnetic unit of the rotor unit being located within the magnetic field range of the corresponding stator unit in an operating state, thereby making it possible to reduce the space occupied by the drive unit.

Description

[Technical field]

[0001] This application claims priority from the following three Chinese patent applications, the entire contents of which are incorporated herein by reference: 1. A Chinese patent application submitted to the China Patent Office on April 29, 2022, with application number 202210472213.9 and title of the invention "Fluid control device and manufacturing method thereof"; 2. A Chinese patent application submitted to the China Patent Office on April 29, 2022, with application number 202210472369.7 and an invention title of "Fluid Control Device"; 3. A Chinese patent application submitted to the China Patent Office on April 29, 2022, with application number 202210472396.4, and with the invention name "Fluid Control Device".

[0002] The present invention relates to the field of fluid control, and more particularly to a fluid control device and its manufacturing method, and a drive unit. [Background technology]

[0003] Generally, a thermal management system includes multiple fluid elements, which are controlled by individual driving elements, resulting in a large space occupied by the system. Therefore, a problem that needs to be improved is how to perform an integrated design for these driving elements in order to reduce the space occupied by the driving elements. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE PRESENTLY PREFERRED EMBODIMENTS The present invention provides a fluid control device, a manufacturing method thereof, and a drive unit, which reduces the space occupied by the drive unit in the fluid control device and improves the integration degree of the drive unit. [Means for solving the problem]

[0005] The present invention provides a fluid control device, the fluid control device including a drive unit and a fluid unit connected to each other, the fluid unit including at least two fluid subunits, the drive unit including a first housing and a drive member, the drive member being engaged with and arranged on a corresponding one of the fluid subunits, the first housing including a bottom wall portion connected to the bottom wall portion and a position limiting portion, at least a portion of the position limiting portion protruding from the bottom wall portion, at least one of the drive members including a stator unit is defined as a first drive member, at least a portion of the first drive member is connected to be positionally limited within the position limiting portion, and at least one other of the drive members is connected to be positionally limited to the first housing, At least one of the fluid subunits includes a pump unit, the pump unit including a rotor unit, the rotor unit including a magnetic unit located within a magnetic field range of the corresponding stator unit in an operational state.

[0006] According to another aspect, a method for manufacturing a fluid control device is provided, comprising: forming a drive unit, the step including the steps of: providing a first housing and at least two drive members, the first housing including a bottom wall portion and a position limiting portion, the first housing having a first receiving cavity, the bottom wall portion forming a part of a wall of the first receiving cavity, at least a part of the position limiting portion protruding from the bottom wall portion, at least one of the drive members including a stator unit; and connecting at least a part of the stator unit to positionally limit within the position limiting portion; providing at least two fluidic subunits, at least one of the fluidic subunits including a pump unit, the pump unit including a rotor unit; and engaging the drive unit and the pump unit such that a magnetic unit of the rotor unit is within a magnetic field range of the corresponding stator unit in an operational state.

[0007] According to another aspect, a drive unit is further provided, the drive unit including a first housing and a drive member, the first housing including a bottom wall portion and a position limiting portion connected thereto, at least a portion of the position limiting portion protruding from the bottom wall portion, at least one of the drive members including a stator unit, the drive member including the stator unit being defined as a first drive member, at least a portion of the first drive member being connected to be positionally restricted within the position limiting portion, and at least one other of the drive members being connected to be positionally restricted by the first housing. Effect of the Invention

[0008] According to the fluid control device, its manufacturing method, and drive unit of the present invention, the fluid control device includes a drive unit and at least two fluid subunits, the drive unit includes a drive member engaged with and arranged on a corresponding fluid subunit, whereby the drive unit drives to operate the corresponding fluid subunit, and at least one drive member includes a stator unit, at least a portion of the stator unit is connected to be positionally restricted within a position restricting portion of the first housing, thereby connecting the stator unit to be positionally restricted to the first housing, and at least another drive member is connected to be positionally restricted to the first housing, so that at least two drive members are integrated into one drive unit. Compared with disposing a separate driving device for each fluid sub-unit, the fluid control device of the present invention can reduce the space occupied by the driving unit and improve the integration degree of the driving unit. [Brief description of the drawings]

[0009] [Figure 1] 1 is an exploded view of a fluid control device provided by a first embodiment of the present invention. [Diagram 2] FIG. 2 is a three-dimensional diagram of the fluid control device according to FIG. [Diagram 3]FIG. 4 is an exploded view of the drive unit provided in this embodiment. [Figure 4] 3A and 3B show three-dimensional views of the drive unit according to FIG. [Diagram 5] FIG. 5 is a cross-sectional view of the drive unit according to FIG. [Figure 6] FIG. 4 is a partial cross-sectional view of a combined structure of a first housing and a driving member in the present embodiment. [Figure 7] FIG. 4 is a cross-sectional view of another drive unit of the present invention. [Figure 8] FIG. 4 is a cross-sectional view of another drive unit of the present invention. [Figure 9] FIG. 5 is a three-dimensional view of the stator unit according to FIG. [Figure 10] FIG. 2 is an exploded view of the fluid unit provided in this embodiment. [Figure 11] 11. Three-dimensional view of the fluidic unit according to FIG. [Figure 12] FIG. 12 is a cross-sectional view of the first fluid unit according to FIG. 11 in one position. [Figure 13] FIG. 4 is a partial cross-sectional view of a fluid unit provided by a second embodiment of the present invention. [Figure 14] FIG. 3 is a three-dimensional view of a main housing provided in this embodiment. [Figure 15] FIG. 15 is a cross-sectional view of the main housing according to FIG. [Figure 16] 14 is a cross-sectional view of one fluid unit according to FIG. 13. [Figure 17] 1 is a partial cross-sectional view of a fluid control device provided by a first embodiment of the present invention. [Figure 18] An enlarged view of part Q1 in Figure 17. [Figure 19] FIG. 4 is a partial cross-sectional view of a combined structure of a first drive unit and a fluid unit of the present invention. [Figure 20] FIG. 20 is a partially enlarged view of the combined structure of the drive unit and the hydraulic unit shown in FIG. 19. [Figure 21] FIG. 4 is a partial cross-sectional view of a combined structure of the second drive unit and the hydraulic unit of the present invention. [Figure 22] FIG. 13 is a partial cross-sectional view of a combined structure of the third driving unit and the fluid unit of the present invention. [Diagram 23]FIG. 13 is a partial cross-sectional view of a combined structure of the fourth drive unit and the hydraulic unit of the present invention. [Figure 24] FIG. 13 is a partial cross-sectional view of a combined structure of the fifth driving unit and fluid unit of the present invention. [Diagram 25] FIG. 13 is a partial cross-sectional view of a combined structure of the sixth drive unit and the fluid unit of the present invention. [Figure 26] FIG. 13 is a partial cross-sectional view of a combined structure of the seventh drive unit and the hydraulic unit of the present invention. [Figure 27] FIG. 4 is an exploded view of a fluid control device provided by a second embodiment of the present invention. [Figure 28] 28. A three-dimensional view of the fluid control device according to FIG. [Figure 29] Exploded view of the drive unit according to Figure 27. [Diagram 30] 30. A three-dimensional view of the drive unit according to FIG. [Diagram 31] FIG. 30 is a cross-sectional view of one of the drive units according to FIG. 29. [Diagram 32] FIG. 28 is an exploded view of one of the fluid units according to FIG. 27. [Diagram 33] 33A and 33B are schematic views of the fluidic unit according to FIG. [Diagram 34] FIG. 28 is a front view of the fluid control device according to FIG. [Diagram 35] 35 is a cross-sectional view of the fluid control device shown in FIG. 34 taken along line AA. [Diagram 36] 35 is a cross-sectional view of the fluid control device shown in FIG. 34 at a point BB. [Figure 37] 34 is a cross-sectional view of the fluidic unit according to FIG. 33 at one position. [Figure 38] 34 is a cross-sectional view of the fluidic unit according to FIG. 33 in another position. [Figure 39] Structural diagram of the fluid control device according to Figure 27. [Diagram 40] 28 is a cross-sectional view of the fluid control device according to FIG. 27 in another position. [Diagram 41] 28 is a schematic diagram of the connection of the first valve unit, the first pump unit and the second pump unit according to FIG. 27 in a first operating mode. [Diagram 42]28 is a schematic diagram of the connection of the first valve unit, the first pump unit and the second pump unit according to FIG. 27 in a second operating mode. [Diagram 43] 28. A schematic diagram of the connection of the first valve unit, the first pump unit and the second pump unit according to FIG. 27 in a third operating mode. [Diagram 44] 28. A schematic diagram of the connection of the first valve unit, the first pump unit and the second pump unit according to FIG. 27 in a fourth operating mode. [Diagram 45] 1 is a schematic diagram of a method for manufacturing a fluid control device provided by this embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention will now be further described with reference to the following figures and specific examples. It should be noted that in this specification, relational terms such as "first," "second," etc. are merely intended to distinguish between elements having the same name, and do not require or imply that any such actual relationship or order exists between these elements.

[0011] The fluid control device provided by the embodiment of the present invention is applicable to a thermal management system, for example, a vehicle thermal management system, and realizes the flow of fluid in the thermal management system by the fluid control device.

[0012] As shown in Figures 1 to 8, the fluid control device 1 of the present invention includes a drive unit 100 and a fluid unit 200 which are hermetically connected, and the entire drive unit 100 and the entire fluid unit 200 are assembled together, and a sealing member is disposed between the drive unit 100 and the fluid unit 200 to achieve a hermetically connected connection between the two.

[0013] The drive unit 100 includes at least two drive members 13, the drive members 13 including a stator unit 130, a motor 132, or a combination of the motor 132 and a gear unit 133, and the fluid unit 200 includes at least two fluid subunits LK, the fluid subunit LK including an actuating member and one or a combination of a valve unit 30 and a pump unit 20, the actuating member in the valve unit 30 including a valve body, and the actuating member in the pump unit 20 including a rotor unit. Furthermore, after being powered, the drive member 13 actuates the actuating member in the fluid subunit LK; for example, after being powered, the stator unit 130 generates a magnetic field, which causes the rotor unit to rotate, or when the motor 132 is powered, the output shaft of the motor 132 rotates to rotate the valve body in the valve unit 30. Preferably, the number of driving members 13 is the same as the number of fluid subunits LK and corresponds to each other, and after one driving member 13 is energized, it activates the operating member in one corresponding fluid subunit LK, and the operation of the fluid subunit LK in the fluid unit 200 enables fluid to flow within the fluid control device 1. Here, the number of driving members 13 may be different from the number of fluid subunits LK, for example, by making the number of driving members 13 less than the number of fluid subunits LK, one driving member 13 can drive at least two fluid subunits LK, for example, by a clutch mechanism, one driving member 13 can drive at least two fluid subunits LK. As shown in FIG. 1, the number of fluid subunits LK in this embodiment is five, and correspondingly, the number of driving members 13 is five, and these five driving members respectively correspond to the five fluid subunits LK. In other embodiments, the number of fluid subunits LK and the number of driving members 13 can be set according to the needs of the user, and may be more than two, three, four or six.

[0014] Furthermore, the present invention further provides a drive unit 100, and as shown in Figures 3 to 9, the drive unit 100 further includes a first housing 11 and a second housing 12, and the drive unit 100 has a first accommodating cavity 101, and the first housing 11 and the second housing 12 form at least a portion of the wall of the first accommodating cavity 101. The second housing 11 includes a top cap portion, and the top cap portion and the bottom wall portion 111 are arranged opposite each other along the height direction of the drive unit 100, and the first housing 11 and the second housing 12 form a first accommodating cavity 101 so as to be fitted together, and at least a portion of the at least two drive members 13 are located in the first accommodating cavity 101. As a result, at least two drive members 13 are all integrated into one drive unit 100, and compared to a case in which multiple drive units that control the fluid units are arranged separately, the number of lead wires can be reduced and the space occupied by the drive unit 100 can be made smaller. Preferably, all of the driving members 13 are connected to the first housing 11 so as to be positionally restricted, or some of the driving members 13 are connected to the first housing 11 so as to be positionally restricted, although the present invention is not limited thereto.

[0015] As shown in Figures 3 to 9, the first housing 11 in the drive unit 100 includes a bottom wall portion 111, a position limiting portion 112, and a peripheral side wall 113, and the peripheral side wall 113 is connected to the bottom wall portion 111, and the bottom wall portion 111 is connected to the position limiting portion 112. For example, the three components of the peripheral side wall 113, the bottom wall portion 111, and the position limiting portion 112 may be injection molded as an integral structure and fixed, or may be welded and fixedly connected, or may be connected so as to be positionally limited by fasteners or the like. At least a part of this position limiting portion 112 protrudes from the bottom wall portion 111 along the height direction of the drive unit 100, and the bottom wall portion 111 and the peripheral wall portion 113 form part of the wall portion of the first accommodating cavity 101, and at least one drive member 13 includes a stator unit 130, and the drive member including the stator unit 130 is defined as a first drive member, and at least a part of the first drive member is connected so as to be positionally restricted within the position limiting portion 112. As shown in Figures 3 to 8, at least a part of the stator unit 130 included in the first driving member is located within the position limiting portion 112, or the first driving member may further include a pump housing, and at least a part of the stator unit 130 is located within a cavity of the pump housing; for example, the stator unit 130 is fixed to the pump housing as an insert material by injection molding, or assembled within the cavity of the pump housing, and in this case, at least a part of the pump housing, or the entire pump housing and the stator unit 130, is located within the position limiting portion 112. In this specification, at least a portion of the stator unit 130 is connected to be positionally restricted within the position restricting portion 112, which will be understood as follows. That is, at least a portion of the first drive member is formed as an integral structure with the position limiting portion 112 by an injection molding process, whereby at least a portion of the first drive member is located within the position limiting portion 112; alternatively, the first drive member and the first housing 11 may be arranged as separate entities, the position limiting portion 112 having a cavity, and at least a portion of the first drive member being located within the cavity formed by the position limiting portion 112. By connecting at least a portion of the first driving member so as to restrict its position within the position limiting portion 112, at least two stator units 130 can be integrated into one driving unit 100, and compared to the arrangement of multiple driving devices, the fluid control device provided by the present invention reduces the space occupied by the driving unit 100 and improves the integration degree of the driving unit 100.

[0016] 1 to 9, the number of driving members 13 included in the driving unit 100 in this embodiment is five, and along the height direction of the driving unit 100, there are gaps between the orthogonal projections of the five driving members 13, and three of the driving members 13 include stator units 130, and the three stator units 130 are all connected to the corresponding position limiting portions 112 so as to be positionally restricted, and are located within the corresponding position limiting portions 112. Also, one driving member 13 of the driving unit 100 may include a stator unit 130, and another driving member may be a driving member such as a motor, thereby realizing the integration of different types of driving members 13.

[0017] In order to facilitate positional limitation of the stator unit 130, at least a portion of the position limiting portion 112 extends from the bottom wall portion 111 in a direction away from the first accommodating cavity 101, in which case, at least a portion of the position limiting portion 112 extends from the bottom wall portion 111 in a direction approaching the fluid subunit LK, and at least a portion of the position limiting portion 112 is arranged to protrude from the bottom wall portion 111 in a direction away from the second housing 12. Preferably, the stator unit 130 is fixed to the position limiting portion 112 in an injection molded manner, and the fixing by injection molding herein is injection molded as a one-piece structure. Specifically, the stator unit 130 is injection molded as an insert material integrally with the first housing 11, whereby the stator unit 130 and the position limiting portion 112 are injection molded as an integral structure. In this case, when injection molded, an electrical connection line is pulled out from the stator unit 130 and electrically connected to the control member via the electrical connection line, or, as shown in FIG. 7, the position limiting portion 112 includes an attachment cavity QS, at least a portion of the stator unit 130 is positioned in the attachment cavity QS, and the stator unit 130 is connected to the first housing 11 so as to be positionally limited by a fastener or the like. With this arrangement, the stator unit 130 is arranged so that its position is restricted by the position restricting portion 112 . When at least two driving members 13 each include a stator unit 130, all of the stator units 130 are injection molded as a single unit with the position limiting portion 112, or all of the stator units 130 are assembled within an attachment cavity QS formed from the position limiting portion 112, or some of the stator units 130 are injection molded as a single unit with the position limiting portion 112, and some other stator units 130 are injection molded as a single unit with the position limiting portion 112.

[0018] As shown in Figures 8 and 9, in order to realize the function of the drive unit, the drive unit of the present invention further includes a control member 15 which is a circuit board, and the drive member including the stator unit 130 is defined as a first drive member, and this first drive member further includes a pump housing 135, a transition terminal 134 connected to the pump housing 135, and a connection plate 136, and the stator unit 130 is arranged as a separate body from the first housing 11, and the stator unit 130 may be injection molded as an integral structure with the pump housing 135, or the stator unit 130 may be assembled within a cavity defined by the pump housing 135. In this case, the stator unit 130 and the pump housing 135 are both assembled in an installation cavity QS formed from the position limiting portion 112, at least a portion of the stator unit 130 and the connecting plate 136 are both positioned in the cavity of the pump housing 135, and the pump housing 135 is sealingly connected to the first housing 11. For example, as shown in FIG. 8, the pump housing 135 may be sealingly connected to the first housing 11 by a sealing ring, or the pump housing 135 may be injection molded as an integral structure with the position limiting portion 112 of the first housing 11. The stator unit 130 includes a coil winding 1303, and the coil winding 1303 is electrically connected to a connection pin in the transition terminal 134 by a conductive member in the connection plate 136, and a portion of the transition terminal 134 is located in the first accommodating cavity 101 through the bottom wall portion 111, and the transition terminal 134 is electrically connected to the control member 15. Here, the driving member in this specification includes a stator unit 130 or a motor 132, and the driving member may further include a lead wire structure or a terminal structure, by which the control member 15 is electrically connected to the stator unit 130 or the motor 132.

[0019] In order to realize an electrical connection between the stator unit 130 and the control member 15, the first housing 11 is provided with a metal conductive structure which is injection molded as a single unit with the first housing 11, thereby embedding the metal conductive structure within the first housing 11. Insulation displacement connectors (IDC) are used for the output terminals 1304 of the stator unit 130, with electrical connection to the control member 15 by IDC pins.

[0020] The drive unit 100 of this embodiment includes three stator units 130, each of which includes an insulating holder 1301, a stator core 1302, and a coil winding 1303, with a portion of the stator core 1302 fitted into the insulating holder 1301, and the coil winding 1303 wound around the insulating holder 1301. When current is applied, the coil winding 1303 generates a magnetic field, and the rotor unit 22 in the pump unit 20 is located within the magnetic field range of the corresponding stator unit 130. This enables the stator unit 130 to drive the rotor unit 22 to rotate. With such an arrangement, the stator unit 130 can be integrated into the drive unit 100 .

[0021] As shown in FIG. 24, the fluid control device further includes an isolation sleeve 23, a portion of which is located on the inner circumferential side of the stator unit 130, and preferably, the isolation sleeve 23 is injection molded as an integral structure with the first housing 11, for example, the isolation sleeve 23 is injection molded as an integral structure with the position limiting portion 112, in which case the stator unit 130 is injection molded as an integral structure with the position limiting portion 112 or is located within the mounting cavity QS of the position limiting portion 112. Preferably, as shown in Figures 19 to 24, the isolation sleeve 23 is injection molded as an integral structure with the stator unit 130, or at least a portion of the stator unit 130 is located within a cavity formed by the isolation sleeve 23, and the isolation sleeve 23 and the stator unit 130 are arranged separately from the first housing 11 as a whole and are hermetically connected to it, and a sealing ring is provided between the overall structure formed by the isolation sleeve 23 and the stator unit 130 and the first housing 11, and this sealing ring is arranged in a clamping manner to achieve a sealed arrangement between the overall structure and the first housing 11. By such an arrangement, a position limiting arrangement and a sealed connection between the isolation sleeve 23 and the first housing 11 can be achieved.

[0022] When the stator unit 130 and the position limiting portion 112 are injection molded as a one-piece structure, the isolation sleeve 23 and the first housing 11 are injection molded as a one-piece structure, or the isolation sleeve 23 and the first housing 11 are arranged as separate bodies and hermetically connected. When the stator unit 130 is assembled into the mounting cavity QS of the position limiting portion 112, the isolation sleeve 23 and the first housing 11 are injection molded as a single unit, or the isolation sleeve 23 and the first housing 11 are arranged as separate bodies and hermetically connected, or the isolation sleeve 23 and the stator unit 130 are injection molded as a single unit, and the isolation sleeve 23 and the stator unit 130 as a whole are arranged as separate bodies to the first housing 11 and hermetically connected. When the number of stator units 130 is at least two, the position limiting connection methods between different stator units 130 and the first housing 11 may be similar or different, and the connection methods between the isolation sleeves 23 corresponding to the different stator units 130 and the first housing 11 may be similar or different.

[0023] 10 to 15 for the fluid unit 200, which further includes a main housing 40 having a cavity, and at least a portion of the fluid subunit LK is located within the corresponding cavity. For example, the fluid subunit LK includes at least two pump units 20, each including a rotor unit 22, and a portion of one rotor unit 22 and a corresponding stator unit 130 are fitted together, so that when energized, the stator unit 130 can drive the rotor unit 22 to rotate, or the stator unit 130 and the rotor unit 22 may be a plate-like structure. One pump unit is defined as a first pump unit 20a and the other pump unit is defined as a second pump unit 20b, where the first pump unit 20a includes a first rotor unit 22a and the second pump unit 20b includes a second rotor unit 22b, where the first rotor unit 22a is located in the magnetic field range of the first stator unit 130a and the second rotor unit 22b is located in the magnetic field range of the second stator unit 130b. The number of pump units can be set according to the user's needs, for example, two, three, four or more. In this embodiment, the three fluid subunits LK all include a pump unit 20, and the three pump units 20 are a first pump unit 20a, a second pump unit 20b and a third pump unit 20c, respectively, and there are gaps between the three pump units. Such an arrangement allows integration of at least two pump units 20 and reduces the pipeline connections between the pump units 20 .

[0024] Alternatively, to realize multiple operating modes of the fluid control device, at least one fluid subunit LK includes a pump unit 20, and at least one fluid subunit LK includes a valve unit 30, which includes a valve body 31 and a valve body shaft 32, and the valve body 31 and the valve body shaft 32 may be injection molded as an integral structure or are connected by an interference fit or a connection key, and the valve body 31 is connected to the output shaft of a motor 132 by the valve body shaft 32 so as to transmit power, and rotates or moves in a translational manner under the power action of the motor 132. The valve element 31 in this embodiment can be rotated by being driven, thereby realizing a plurality of operation modes of the fluid control device 1. In this specification, a transmission connection between two members means a connection that can transmit a driving force between the two members, and the two members may be connected so as to transmit power directly or indirectly. Specifically, the valve body shaft 32 of the valve unit 30 may be directly connected to the motor 132 for transmission, or the drive unit 100 may further include a gear unit 133 through which the motor 132 is connected to the valve body shaft 32 of the valve body 31 for transmission. The number of valve units 30 can be set according to the user's needs. For example, as shown in FIG. 1, in this embodiment, two fluid subunits LK include valve units 30, and correspondingly, the drive unit 100 includes two motors 132, so that the motors 132 can be driven to operate the corresponding valve units 30.

[0025] Furthermore, as shown in FIGS. 3 to 16, the pump unit 20 includes a rotor unit 22, and an isolation sleeve 23 of the fluid control device is provided so as to cover the outer circumferential side of the rotor unit 22. The isolating sleeve 23 isolates the stator unit 130 and the corresponding rotor unit 22 from each other and prevents working fluid from entering the space in which the stator unit 130 resides.

[0026] In order to realize fluid flow within the fluid control device 1, at least a portion of the main housing 40 is located on the side of the first housing 11 away from the first accommodating cavity 101, and as shown in FIG. 1, at least a portion of the main housing 40 is located on the side of the first housing 11 away from the second housing 12, and the main housing 40 further includes a connecting pipe 41, which may be arranged along the circumferential direction of the main housing 40 or may be integrated on at least one mounting surface. As shown in Figures 11 to 17, in order to realize fluid flow in the pump unit 20, the main housing 40 has a first cavity 401, a first hole passage 404 and a second hole passage 405, and the first hole passage 404 and the second hole passage 405 are both connected to the first cavity 401. At least a portion of one pump unit 20 is located in one first cavity 401, and when the rotor unit 22 rotates, the fluid can be driven to flow through the first hole passage 404 and the second hole passage 405. Preferably, the rotor unit 22 includes an impeller unit 221 and a magnetic unit 223 , and the pump unit 20 further includes a positioning shaft 222 . The impeller unit 221 is fitted onto the outer periphery of the positioning shaft 222, and at least a part of it is located in the first cavity 401. At least a part of the first hole 404 and the impeller unit 221 are arranged along the height direction of the pump unit 20. The positions of the second hole 405 and the impeller unit 221 correspond to each other. Preferably, at least a part of the wall of the first hole 404 is arranged coaxially with the rotation axis of the impeller unit 221. The mouth of the second hole 405 is located at the circumferential edge of the impeller unit 221. The fluid enters the impeller unit 221 from the first hole 404 and is discharged from the second hole 405 by the action of the centrifugal force of the impeller unit 221. In this case, the first hole 404 may be the inlet hole of the pump unit 20, and the second hole 405 may be the outlet hole of the pump unit 20.

[0027] When at least one fluid subunit LK further includes a valve unit 30, the main housing 40 further includes a second cavity 402, the second cavity 402 and the first cavity 401 are arranged at a distance from each other, at least a part of one pump unit 20 is arranged in the first cavity 401 so as to be sealed, and at least a part of one valve body 31 is located in one second cavity 402, and preferably, a sealing member is provided between at least a part of one pump unit 20 and the main housing 40, or a part of the structure of the pump unit 20 is welded to the main housing 40 to achieve a sealed arrangement between the two; similarly, a sealing member may be provided between the valve body 31 and the main housing 40, or multiple parts of the main housing 40 arranged as separate bodies are welded, thereby disposing the valve body 31 in the second cavity 402 so as to be sealed. Furthermore, by integrating at least one pump unit 20 and at least one valve body 31 in one main housing 40 in this manner, the space occupied by the fluid unit 200 is reduced, and further the space occupied by the fluid control device 1 is reduced.

[0028] As shown in FIGS. 12 to 19, in order to realize exchange of fluids flowing through the pump unit 20 and the valve unit 30, the main housing 40 further includes a communication passage 407 and a plurality of flow paths 406, as well as a flow path plate 44 and a cavity housing 45. The cavity housing 45 and the flow path plate 44 are injection molded as an integral structure, the first cavity 401, the second cavity 402 and the flow path 406 are located in the cavity housing 45, the communicating passage 407 is located in the flow path plate 44, and at least a portion of the flow path plate 44 is connected between the two fluid subunits LK. For example, the flow path plate 44 may be connected between the pump unit 20 and the valve unit 30, or between two valve units 30, and by integrating the flow path plate 44 and the cavity housing 45 as a single unit, the number of pipe connections between each cavity housing 45 is reduced, thereby improving the integration of the fluid control device. Furthermore, the multiple flow paths 406 are distributed on the outer periphery of the second cavity 402, and one flow path 406 is connected to one of the first hole path 404 and the second hole path 405 by one connecting passage 407, and the valve body 31 includes a conductive cavity 311 that connects at least two flow paths 406, and the extension direction of the connecting passages 407 that are connected to each other and the extension direction of the flow paths 406 intersect with the extension direction of the first hole path 404 or the second hole path 405.

[0029] 1 to 19, the pump unit 20 includes a first pump unit 20a, a second pump unit 20b, and a third pump unit 20c, the valve unit 30 includes a first valve unit 30a and a second valve unit 30b, the first valve unit 30a includes a first valve body 31a and a first sealing member (not shown), the second valve unit 30b includes a second valve body 31b and a second sealing member (not shown), and the first pump unit 20a, the second pump unit 20b, the third pump unit 20c, and the second The valve unit 30b is distributed on the outer periphery of the first valve unit 30a, and the flow path 406 on the outer periphery of the first valve unit 30a is defined as a first flow path 4061, and the first flow path 4061 is located in the wall of the cavity in which the first valve unit 30a is located, and the number of the first flow paths 4061 may be at least eight, for example, eight, and the flow path on the outer periphery of the second valve unit 30b is defined as a second flow path 4062, and the second flow path 4062 is located in the wall of the cavity in which the second valve unit 30b is located. The number of the second flow paths 4062 may be at least three, for example, three, one of the first flow paths 4061 and one of the second flow paths 4062 being connected to each other, the first valve body 31a includes at least four conductive cavities 311, the conductive cavities 311 of the first valve body 31a connect two of the first flow paths 4061, and the conductive cavity of the second valve body 31b connects two or three of the second flow paths 4062. By rotating the first valve body 31a, communication and switching between at least two first flow paths 4061 can be achieved, and by rotating the second valve body 31b, communication between the second flow paths 4062, switching and flow rate adjustment can be achieved.

[0030] Based on this, the communication passage 407 of the main housing 40 includes a first communication passage 407a, a second communication passage 407b and a third communication passage 407c, the first cavity 401 includes a first sub-cavity A1, a second sub-cavity A2 and a third sub-cavity A3, the second cavity 402 includes a fourth sub-cavity A4 and a fifth sub-cavity A5, at least a part of the first pump unit 20a is located in the first sub-cavity A1, and at least a part of the second pump unit 20b is located in the second sub-cavity A2. is located in the second sub-cavity A2, at least a portion of the third pump unit 20c is located in the third sub-cavity A3, at least a portion of the first valve unit 30a is located in the fourth sub-cavity A4, and at least a portion of the second valve unit 30b is located in the fifth sub-cavity A5, and the first sub-cavity A1, the second sub-cavity A2 and the third sub-cavity A3 all communicate with the fourth sub-cavity A4, and the fifth sub-cavity A5 communicates with the fourth sub-cavity A4. The first hole path 404 includes a first sub-hole path 404a, a second sub-hole path 404b, and a third sub-hole path 404c, and the second hole path 405 includes a fourth sub-hole path 405a, a fifth sub-hole path 405b, and a sixth sub-hole path 405c, where the first sub-hole path 404a and the fourth sub-hole path 405a are both connected to the first sub-cavity A1, the second sub-hole path 404b and the fifth sub-hole path 405b are both connected to the second sub-cavity A2, and the third sub-hole path 404c and the sixth sub-hole path 405c are both connected to the third sub-cavity A3. The first communication passage 407a connects the first sub-cavity A1 and the fourth sub-cavity A4. Specifically, the first communication passage 407a connects the first sub-hole passage 404a and one of the first flow paths 4061 on the outer circumferential side of the first valve body 31a, and the fourth sub-hole passage 405a connects to the cavity of the connecting pipe 41. The second communication passage 407b connects the second sub-cavity A2 and the fourth sub-cavity A4. Specifically, the second communication passage 407b connects the second sub-hole passage 404b and another first flow path 4061 located on the outer circumferential side of the first valve body 31a, and the fifth sub-hole passage 405b connects to the cavity of the connecting pipe 41. The third communication passage 407c connects the third sub-cavity A3 and the fourth sub-cavity A4. Specifically, the third communication passage 407c connects the sixth sub-hole passage 405c and another first flow path 4061 located on the outer circumferential side of the first valve body 31a, and the third sub-hole passage 404c connects to the cavity of the connecting pipe 41.

[0031] Furthermore, the main housing 40 further includes a fourth communication passage 407d that communicates between the fifth sub-cavity A5 and the fourth sub-cavity A4. The first communication passage 407a, the second communication passage 407b, the third communication passage 407c and the fourth communication passage 407d are provided on the outer circumferential surface of the wall portion of the fourth sub-cavity A4. As shown in FIG. 15, at least a portion of the first communication passage 407a, at least a portion of the second communication passage 407b, at least a portion of the third communication passage 407c, and at least a portion of the fourth communication passage 407d are arranged at intervals along the circumferential direction of the wall portion of the fourth sub-cavity A4. The communication passages may be in other forms, for example, at least some of the communication passages are arranged along the height direction of the fluid control device. This arrangement allows the pump unit 20 and the valve unit 30 to work together to realize multiple operating modes of the fluid control device, which, when applied to a thermal management system, realizes multiple operating states of the thermal management system and further realizes functions such as cooling and temperature reduction for different heat sources.

[0032] The fluid control device provided by the present invention will now be described.

[0033] 1 to 26, each of the at least two drive members 13 includes a stator unit 130, each of the at least two fluid subunits LK includes a pump unit 20, one pump unit is defined as a first pump unit 20a and the other pump unit is defined as a second pump unit 20b, one stator unit is the first stator unit 130a and the other stator unit is the second stator unit 130b, the position limiting portion 112 includes a first position limiting portion 112a and a second position limiting portion 112b, and at least a portion of the first stator unit 130a is positionally limited within the first position limiting portion 112a. the first pump unit 20a includes a first rotor unit 22a and the second pump unit 20b includes a second rotor unit 22b, the first rotor unit 22a is located in a magnetic field range of the first stator unit 130a and the second rotor unit 22b is located in a magnetic field range of the second stator unit 130b, and preferably, a portion of the first rotor unit 22a is located inside the first stator unit 130a and a portion of the second rotor unit 22b is located inside the second stator unit 130b. With this arrangement, at least two stator units 130 can be integrated into one drive unit 100, thereby improving the integration degree of the drive unit 100 compared to when two stator units 130 are each provided in different drive units.

[0034] As shown in Figures 1 to 9, each of the three driving members 13 includes a stator unit 130, which is a first stator unit 130a, a second stator unit 130b, and a third stator unit 130c, respectively. Correspondingly, the first housing 11 includes a first position limiting portion 112a, a second position limiting portion 112b, and a third position limiting portion 112c, and the number of fluid subunits LK including the pump unit 20 may be two, three, four, or more. The fluid subunit LK in this embodiment includes three pump units 20, and the three pump units 20 are defined as a first pump unit 20a, a second pump unit 20b and a third pump unit 20c, respectively, a portion of the third rotor unit 22c is located inside the third stator unit 130c, and the third rotor unit 22c can be located in the magnetic field range of the third stator unit 130c, and preferably, the first stator unit 130a is injection molded as an integral structure with the first position limiting portion 112a, the second stator unit 130b is injection molded as an integral structure with the second position limiting portion 112b, the third stator unit 130c is injection molded as an integral structure with the third position limiting portion 112c, and the position limiting portion 112 is injection molded as an integral structure with the bottom wall portion 111.

[0035] At least one fluid subunit LK includes a pump unit 20, at least one fluid subunit LK includes a valve unit 30, at least one driving member 13 includes a stator unit 130, and at least one other driving member 13 includes a motor 132, the first housing 11 further includes a mounting portion 114 (see FIG. 6), the mounting portion 114 and the position limiting portion 112 are arranged at a distance from each other, the motor 132 is connected to the mounting portion 114 so as to be positionally limited, and at least a portion of it is located in the first accommodating cavity 101. Such an arrangement allows at least one stator unit 130 and at least one motor 132 to both be integrated into the same drive unit 100 . The valve unit 30 includes a valve body 31 and a valve body shaft 32, which may be injection molded as a single unit, or may be connected by an interference fit or a connection key. The valve body 31 is connected to the output shaft of a motor 132 by the valve body shaft 32 so as to transmit power thereto, and rotates or moves horizontally by the power action of the motor 132. In this embodiment, the valve body 31 can rotate when driven, thereby realizing multiple operating modes of the fluid control device 1. Specifically, the valve body shaft 32 of the valve unit 30 may be directly connected to the motor 132 for transmission, or the drive unit 100 may further include a gear unit 133 through which the motor 132 is connected to the valve body shaft 32 of the valve body 31 for transmission. With this arrangement, at least one stator unit 130 and at least one motor 132 can be integrated into the same drive unit 100, thereby reducing the space occupied by the drive unit 100. The number of valve units 30 and the number of motors 132 can be set according to the user's needs. For example, as shown in FIG. 1, in this embodiment, two fluid subunits LK include valve units 30, and correspondingly, the drive unit 100 includes two motors 132, so that the motors 132 can be driven to operate the corresponding valve units 30.

[0036] 1 to 26, the drive unit 100 includes five drive members 13, and three of the drive members 13 each include a stator unit 130. These three stator units 130 are defined as a first stator unit 130a, a second stator unit 130b, and a third stator unit 130c, respectively. The other two driving members 13 each include a transmission unit composed of a motor 132 and a gear unit 133. One set of transmission units includes a first motor 132a and a first gear unit 133a, and the other set of transmission units includes a second motor 132b and a second gear unit 133b. Accordingly, the fluid unit 200 includes five fluid subunits LK, three of which include pump units 20 and the other two of which include valve units 30, and the three pump units 20 are defined as a first pump unit 20a, a second pump unit 20b and a third pump unit 20c, respectively, one of the valve units 30 includes a first valve body 31a and the other valve unit 30 includes a second valve body 31b. The first stator unit 130a can drive the rotor unit in the first pump unit 20a to rotate, the second stator unit 130b can drive the rotor unit in the second pump unit 20b to rotate, the third stator unit 130c can drive the rotor unit in the third pump unit 20c to rotate, the first transmission unit consisting of the first motor 132a and the first gear unit 133a can drive the first valve body 31a to rotate, and the second transmission unit consisting of the second motor 132b and the second gear unit 133b can drive the second valve body 31b to rotate. Preferably, along the height direction of the fluid control device 1, the sides of the first pump unit 20a, the second pump unit 20b and the third pump unit 20c that are away from the main housing 40 are located at the same height, i.e., one end of the three pump units that approach the drive unit 100 is located at the same height and assembled with the three stator units in the drive unit 100, and preferably, the sides of the three stator units corresponding to the three pump units that are away from the main housing 40 may also be located at the same height, whereby, assembled with and electrically connected to the control member, a part of the valve unit 30 and a part of the pump unit 20 are located at the same height. Such an arrangement reduces the height of the fluid control device and allows the control members of the valve unit 30 and the pump unit 20 to both be integrated in the first housing and electrically connected to the same control members.

[0037] The operation modes of the fluid control device shown in Figs. 1 to 26 will be explained below. Seven of the first flow paths 4061 are defined as the first sub-flow path P1, the second sub-flow path P2, the third sub-flow path P3, the fourth sub-flow path P4, the sixth sub-flow path P6, the seventh sub-flow path P7, and the eighth sub-flow path P8, and two of the second flow paths 4062 are defined as the fifth sub-flow path P5 and the ninth sub-flow path P9, the conductive cavity of the first valve body 31a is defined as the first conductive cavity, and the conductive cavity of the second valve body 31b is defined as the second conductive cavity. The fluid control device of the present invention has at least one of the following modes of operation:

[0038] First operating mode: the first valve body 31a rotates to a first position, the first sub-flow passage P1 and the second sub-flow passage P2 are electrically connected via one first conductive cavity, the third sub-flow passage P3 and the fourth sub-flow passage P4 are electrically connected via another first conductive cavity, the sixth sub-flow passage P6 and the seventh sub-flow passage P7 are electrically connected via another first conductive cavity, and at least one of the fifth sub-flow passage P5 and the ninth sub-flow passage P9 and the eighth sub-flow passage P8 are electrically connected via another first conductive cavity, the fourth communication passage 407d, and the second conductive cavity.

[0039] Second operating mode: the first valve body 31a rotates to the second position, the third sub-flow passage P3 and the second sub-flow passage P2 are electrically connected via one first conductive cavity, at least one of the fifth sub-flow passage P5 and the ninth sub-flow passage P9 and the fourth sub-flow passage P4 are electrically connected via another first conductive cavity, the fourth communication passage 407d and the second conductive cavity, the seventh sub-flow passage P7 and the eighth sub-flow passage P8 are electrically connected via another first conductive cavity, and the sixth sub-flow passage P6 and the first sub-flow passage P1 are electrically connected via another first conductive cavity.

[0040] Third operating mode: the first valve body 31a rotates to a third position, the first sub-flow passage P1 and the eighth sub-flow passage P8 are electrically connected via one first conductive cavity, the third sub-flow passage P3 and the fourth sub-flow passage P4 are electrically connected via another first conductive cavity, at least one of the fifth sub-flow passage P5 and the ninth sub-flow passage P9 and the sixth sub-flow passage P6 are electrically connected via another first conductive cavity, the fourth communication passage 407d, and the second conductive cavity, and the second sub-flow passage P2 and the seventh sub-flow passage P7 are electrically connected via another first conductive cavity.

[0041] Fourth operating mode: the first valve body 31a rotates to a fourth position, the first sub-flow passage P1 and the second sub-flow passage P2 are electrically connected via one first conductive cavity, at least one of the fifth sub-flow passage P5 and the ninth sub-flow passage P9 and the fourth sub-flow passage P4 are electrically connected via another first conductive cavity, the fourth communication passage 407d and the second conductive cavity, the sixth sub-flow passage P6 and the seventh sub-flow passage P7 are electrically connected via another first conductive cavity, and the third sub-flow passage P3 and the eighth sub-flow passage P8 are electrically connected via another first conductive cavity.

[0042] Fifth operating mode: the first valve body 31a rotates to a fifth position, the third sub-flow passage P3 and the second sub-flow passage P2 are electrically connected via one first conductive cavity, the seventh sub-flow passage P7 and the eighth sub-flow passage P8 are electrically connected via another first conductive cavity, at least one of the fifth sub-flow passage P5 and the ninth sub-flow passage P9 and the sixth sub-flow passage P6 are electrically connected via another first conductive cavity, the fourth communication passage 407d, and the second conductive cavity, and the first sub-flow passage P1 and the fourth sub-flow passage P4 are electrically connected via another first conductive cavity.

[0043] Sixth operating mode: the first valve body 31a rotates to a sixth position, the first sub-flow passage P1 and the eighth sub-flow passage P8 are electrically connected via one first conductive cavity, the third sub-flow passage P3 and the fourth sub-flow passage P4 are electrically connected via another first conductive cavity, the sixth sub-flow passage P6 and the seventh sub-flow passage P7 are electrically connected via another first conductive cavity, and at least one of the fifth sub-flow passage P5 and the ninth sub-flow passage P9 and the second sub-flow passage P2 are electrically connected via another first conductive cavity, the fourth communication passage 407d, and the second conductive cavity.

[0044] Seventh operating mode: the first valve body 31a rotates to a seventh position, the first sub-flow passage P1 and the second sub-flow passage P2 are electrically connected via one first conductive cavity, the seventh sub-flow passage P7 and the eighth sub-flow passage P8 are electrically connected via another first conductive cavity, at least one of the fifth sub-flow passage P5 and the ninth sub-flow passage P9 and the fourth sub-flow passage P4 are electrically connected via another first conductive cavity, the fourth communication passage 407d, and the second conductive cavity, and the sixth sub-flow passage P6 and the third sub-flow passage P3 are electrically connected via another first conductive cavity.

[0045] Eighth operating mode: the first valve body 31a rotates to an eighth position, the first sub-flow passage P1 and the eighth sub-flow passage P8 are electrically connected via one first conductive cavity, the second sub-flow passage P2 and the third sub-flow passage P3 are electrically connected via another first conductive cavity, at least one of the fifth sub-flow passage P5 and the ninth sub-flow passage P9 and the sixth sub-flow passage P6 are electrically connected via another first conductive cavity, the fourth communication passage 407d, and the second conductive cavity, and the fourth sub-flow passage P4 and the seventh sub-flow passage P7 are electrically connected via another first conductive cavity.

[0046] Preferably, the second valve body 31b can be rotated to realize a conduction mode between different flow paths or a proportional adjustment between the passages corresponding to the second valve body 31b. Here, when the fluid control device has more flow paths or ports, the fluid control device may include three or more valve bodies to realize switching of the conduction mode between the multiple flow paths or ports, to which the present invention is not limited.

[0047] The first cavity 401 and the second cavity 402 both have openings located on the surface of the main housing 40, and in order to realize assembly of the pump unit 20 and the valve unit 30, the first mounting port K1 of the first cavity 401 and the second mounting port K2 of the second cavity 402 are respectively provided on different surfaces of the main housing 40. As shown in FIG. 1, the opening of the first cavity 401 and the opening of the second cavity 402 are provided on opposite sides in the height direction of the main housing 40, and the main housing 40 includes a cavity housing 45 and a bottom cap. The bottom cap and the cavity housing 45 can be hermetically connected by a process such as welding. For example, the bottom cap includes a first bottom cap 42 and a second bottom cap 43, and each flow path and cavity are both located in the cavity housing 45. The first bottom cap 42 and the second bottom cap 43 are both hermetically connected to the cavity housing 45, and the hermetically connected connection is realized by a method such as welding, adhesive, or a sealing ring.

[0048] The cavity housing 45 includes a cavity housing side wall and a cavity housing top wall, a portion of the cavity housing side wall and the cavity housing top wall form at least a portion of the wall of the first cavity 401, the cavity housing side wall and the cavity housing top wall are of an integral structure, and the cavity housing top wall and the first mounting port K1 are located on the same side of the main housing 40. This arrangement reduces assembly errors between the valve unit 30 and the corresponding drive member 13, improves the strength of the cavity housing 45, and positions the valve unit 30 and the drive member corresponding to the pump unit 20 on the same side of the main housing 40.

[0049] The main housing 40 includes a first end S1 and a second end S2 arranged opposite each other along the height direction of the main housing 40, with a first mounting opening K1 of the first cavity 401 located at the first end S1 and a second mounting opening K2 of the second cavity 402 located at the second end S2, and the drive unit 100 located on the side of the first end S1 away from the second end S2. With this arrangement, the pump unit 20 is assembled to the main housing 40 on one side of the main housing 40, and the valve unit 30 is assembled to the main housing 40 from the other side of the main housing 40, thereby realizing that the drive members of the drive pump unit 20 and the drive valve unit 30 are arranged on the same side, and further realizing the integration of multiple drive members. When the number of valve units 30 is at least two, all the valve units 30 are mounted on the same side of the main housing 40 to unify the assembly standard, and all the pump units 20 are mounted from the other side of the main housing 40 to reduce the assembly error and better realize the coaxiality between the at least two valve units 30 and the corresponding driving members 13. Here, the first mounting port K1 of the first cavity 401 and the second mounting port K2 of the second cavity 402 may be provided on the same side of the main housing 40, whereby the pump unit 20 and the valve unit 30 are both assembled from the same side of the main housing 40, although the present invention is not limited thereto.

[0050] 16 to 26, each pump unit 20 includes an isolation sleeve 23. When the isolation sleeve 23 is sealedly connected to the first housing 11, for example, the isolation sleeve 23 may be injection molded as an integral structure with the first housing 11 or provided separately from the first housing 11, the isolation sleeve 23 may be injection molded as an integral structure with the main housing 40. Alternatively, when the isolation sleeve 23 is injection molded as an integral structure with the first housing 11 or provided separately from the first housing 11, the isolation sleeve 23 is provided separately from the main housing 40, and one side of the isolation sleeve 23 in the thickness direction is sealedly connected to the main housing 40 by a sealing ring, which may be an O-shaped sealing ring or an X-shaped sealing ring. Such an arrangement allows positional limitation and a sealed connection between the isolation sleeve 23 and the main housing 40 to be achieved, in which case the stator unit 130 is either injection molded as an integral structure with the first housing 11 or provided separately from the first housing 11 and adapted to be assembled together.

[0051] When specifically implemented, in order to realize a sealed connection between the isolation sleeve 23 and the first housing 11 and the main housing 40, the fluid control device 1 includes a sealing ring, and when the isolation sleeve 23 is provided separately from the first housing 11, one sealing ring is sandwiched between one side of the isolation sleeve 23 in the thickness direction and the first housing 11, and when the isolation sleeve 23 is provided separately from the main housing 40, one sealing ring is sandwiched between the other side of the isolation sleeve 23 in the thickness direction and the main housing 40. This realizes the sealing performance of the fluid control device 1, reduces fluid leakage, and further reduces or prevents fluid from entering the stator unit, providing a protective effect for the stator unit.

[0052] 12 and 26, the pump unit 20 further includes a pump cap 24 sealingly connected to the isolation sleeve 23. Specifically, the pump cap 24 is welded and positioned on the isolation sleeve 23, the rotor unit 22 is located in a space formed between the pump cap 24 and the isolation sleeve 23, the pump cap 24 has a first port 241 and a second port 242, the rotor unit 22 can drive a fluid to flow between the first port 241 and the second port 242, at least a portion of the pump cap 24 is located in the first cavity 401, and the pump cap 24 is sealingly connected to the main housing 40, and the first port 241 is connected to the first hole 404 and the second port 242 is connected to the second hole 405. The pump unit 20 comprises a pump cavity 201, a first passage 202 and a second passage 203, the pump cap 24 forms at least a part of the wall of the pump cavity 201, the first passage 202 and the second passage 203 may be located in the pump cap 24, the first port 241 is located in the first passage and the second port 242 is located in the second passage, at least a part of the first passage 202 is located in the first hole 404, and at least a part of the second passage 203 is located in the second hole 405.

[0053] Furthermore, to achieve a sealed connection between the pump cap 24 and the main housing 40, a sealing ring is sandwiched between the pump cap 24 and the main housing 40, or the pump cap 24 and the main housing 40 are injection molded as a single unit, as shown in FIG. 26. As used herein, the two structural components may be formed as a unitary structure in an injection molding process or other process, to which the invention is not limited.

[0054] 1 to 8, in order to realize control of the driving member 13 in the driving unit 100, the fluid control device 1 further includes a control member 15 and a connection terminal 16, the control member includes some electronic components, the electronic components include resistors, capacitors, inductors or integrated circuits, etc., and the control member 15 is located in the first accommodating cavity 101. At least a portion of the connection terminal 16 is located outside the first accommodating cavity 101. For example, as shown in Figures 1 to 5, the connection terminal 16 is located on the side of the second housing 12 away from the first accommodating cavity 101 and is injection molded integrally with the second housing 12. The connection terminal 16 is electrically connected to the control member 15, and the at least two driving members 13 are all electrically connected to the control member 15. With this arrangement, a single control member 15 can be used to control at least two drive members 13, thereby saving space and reducing the cost of the drive unit 100, and communicating with external electrical equipment via a single connection terminal 16 simplifies the operation of the fluid control device 1. In order to control multiple driving members with one control member 15, at least a portion of the first stator unit 130a, at least a portion of the second stator unit 130b, at least a portion of the third stator unit 130c, at least a portion of the first motor 132a, and at least a portion of the second motor 132b are all located in the first accommodating cavity 101, and the first stator unit 130a, the second stator unit 130b, the third stator unit 130c, the first motor 132a, and the second motor 132b are all electrically connected to the control member 15. The connection terminal 16 is electrically connected to an external harness structure, so that the control member 15 can control the motor to rotate, thereby rotating the valve body in the valve unit, and further, the control member 15 can control the supply of power to the stator unit to be turned on / off. When the control member 15 controls the stator unit to be energized, the stator unit generates a magnetic field, the rotor unit rotates due to the action of the magnetic field, and the fluid flows into the first and second passages due to the action of the centrifugal force of the impeller unit, and further, the fluid is driven to flow into the valve unit, thereby realizing the function of changing the direction of the fluid and / or regulating the flow rate of the fluid by the valve unit.

[0055] As shown in FIG. 25, the driving member including the stator unit 130 is defined as the first driving member, and the first driving member further includes a pump housing 135, a transition terminal 134 connected to the pump housing 135, and a connecting plate 136, and the stator unit 130 is arranged separately from the first housing 11. At least a portion of the stator unit 130 and the connecting plate are both located in a cavity of the pump housing 135, and the pump housing 135 is sealingly connected to the first housing 11. For example, as shown in FIG. 25, the pump housing 135 may be sealingly connected to the first housing 11 by a sealing ring, or the pump housing 135 may be injection molded as an integral structure with the position limiting portion 112 of the first housing 11. The stator unit 130 includes a coil winding 1303, which is electrically connected to a connection pin in the transition terminal 134 by a conductive member in the connection plate 136, and a portion of the transition terminal 134 is located in the first accommodating cavity 101 through the bottom wall portion 111, and the transition terminal 134 is electrically connected to the control member 15. Here, the driving member in this specification includes the stator unit 130 or the motor 132, and may further include a lead structure or a terminal structure that electrically connects the stator unit 130 or the motor 132 to the control member 15.

[0056] 1 to 26, the fluid control device 1 further includes a position limiting unit 50 located in the fluid unit 200, and the pump unit 20 includes a rotor unit 22, a positioning shaft 222 and an isolation sleeve . At least a portion of the rotor unit 22 and the stator unit 130 are fitted together, the isolation sleeve 23 is arranged to cover a portion of the outer circumferential side of the rotor unit 22, and at least a portion of the isolation sleeve 23 is located between the stator unit 130 and the rotor unit 22, the positioning shaft 222 is fitted inside the rotor unit 22, a first axial side of the positioning shaft 222 is arranged so as to be positionally restricted by the isolation sleeve 23, and the position limiting unit 50 is arranged close to a second axial side of the positioning shaft 222 and so as to be positionally restricted by the rotor unit 22, for example, the position limiting unit 50 is abutted against the rotor unit 22. In this embodiment, the axial direction of the positioning shaft 222 and the height direction of the fluid control device are parallel to or overlap each other. With the above arrangement, both axial sides of the positioning shaft 222 are limited in position, improving the axial distortion of the positioning shaft 222, and further improving the axial distortion of the rotor unit 22, thereby reducing noise of the pump unit 20.

[0057] The rotor unit 22 includes a magnetic unit 223 and an impeller unit 221, and at least a portion of the impeller unit 221 and the magnetic unit 223 are arranged along the axial direction of the rotor unit 22, and at least a portion of the magnetic unit 223 is fitted into the inner surface of the stator unit 130. As a result, at least a portion of the magnetic unit 222 is located within the magnetic field range of the stator unit 130, the isolation sleeve 23 includes an end wall portion 231, a connection portion 232 and a peripheral wall portion 233, the extension direction of the end wall portion 231 intersects with the axial direction of the rotor unit 22, the end wall portion 231 is arranged close to the first housing 11, the peripheral wall portion 233 protrudes from the end wall portion 231, and along the radial direction of the rotor unit 22, at least a portion of the peripheral wall portion 233 is located between the rotor unit 22 and the stator unit 130, along the axial direction of the rotor unit 22, at least a portion of the connection portion 232 protrudes from the end wall portion 231 toward the rotor unit 22, one side of the positioning axis 222 is arranged to be positionally limited by the connection portion 232, and the magnetic unit 223 is located between the connection portion 232 and the position limiting unit 50.

[0058] As shown in FIG. 26, the pump unit 20 further includes a pump cap 24, at least a portion of which is located on the outer circumferential side of the impeller unit 221 and is located in the first cavity 401, and at least a portion of the position limiting unit 50 is located in the pump cap 24, the position limiting unit 50 having a groove 521, and the second side end of the positioning shaft 222 is located in the groove 521 and abuts against the bottom wall portion of the groove 521. With this arrangement, the isolation sleeve 23 and the pump cap 24 are engaged with each other to provide axial positional limiting for the rotor unit 22 . Preferably, the pump cap 24 is injection molded as a unitary structure with the main housing 40 or is provided separately from the main housing 40 and connected thereto in a positionally constrained manner. In this case, a sealing ring is provided between the pump cap 24 and the main housing 40 to achieve a seal between them.

[0059] As shown in Figures 18 to 25, when the pump cap 24 and the main housing 40 are injection molded as an integral structure, at least a portion of the impeller unit 221 is located in the first cavity 401, and the main housing 40 includes a first hole passage 404 and a second hole passage 405 communicating with the first cavity 401, and when the impeller unit 221 rotates, it can drive fluid to circulate between the first hole passage 404 and the second hole passage 405. The position limiting unit 50 includes a support part 52 and at least two connecting ribs 51, the connecting ribs 51 are connected to the peripheral wall of the first hole passage 404 and distributed on the outer circumferential side of the support part 52, the support part 52 is connected to the connecting ribs 51, a groove 521 is located in the support part 52, and one end of the positioning shaft 222 is inserted into the groove 521. With this arrangement, fluid flow within the first hole passage 404 can be achieved, and the position of the positioning shaft 222 in the axial direction can be limited.

[0060] As shown in FIG. 26, when the pump cap 24 and the main housing 40 are provided separately, the pump unit 20 has a pump cavity 201, a first passage 202 and a second passage 203, the pump cap 24 forms at least a part of the wall of the pump cavity 201, and the first passage 202 and the second passage 203 are both connected to the pump cavity 201, and when the position limiting unit 50 includes a support portion 52 and at least two connecting ribs 51, the connecting ribs 51 are connected to the peripheral wall of the first passage 202 of the pump cap 24 and distributed on the outer periphery of the support portion 52, the support portion 52 is connected to the connecting ribs 51, the groove 521 is located in the support portion 52, and one end of the positioning shaft 222 is fitted into the groove 521.

[0061] The rotor unit 22 includes a first bearing 251 and a second bearing 252 arranged along the axial direction of the rotor unit 22, and along the axial direction of the rotor unit 22, the first bearing 251 is located between the connection portion 232 of the isolation sleeve 23 and the magnetic unit 223, and the second bearing 252 is located between the magnetic unit 223 and the position limiting unit 50. Such an arrangement allows rotation of the magnetic element 223 and the impeller unit 221 in the rotor unit 22.

[0062] As shown in FIG. 26, the position limiting unit 50 includes a first gasket 53 and a pump cap 24 , and the first gasket 53 is abutted between the second bearing 252 and the pump cap 24 . The pump cap 24 includes a support portion 52 and at least two connecting ribs 51 , and a first gasket 53 is abutted between the second bearing 252 and the support portion 52 . Such an arrangement can reduce wear between the pump cap 24 and the second bearing 252. In addition, the positioning shaft 222 and the isolation sleeve 23 are injection molded as a single unit, and / or the magnetic unit 223, the impeller unit 221, the first bearing 251 and the second bearing 252 are injection molded as a single unit, thereby realizing a stable connection between each structural component and simplifying the assembly process of the fluid control device.

[0063] In some other embodiments, as shown in FIG. 22, the position limiting unit 50 includes a first position limiting member 541, a second gasket 542 and a third gasket 543, the first position limiting member 541 is fastened and connected to the positioning shaft 222, the second gasket 542 is abutted between the first bearing 251 and the connection portion 232 along the axial direction of the rotor unit 22, the first position limiting member 541 includes a first flange portion 5411 and a columnar portion 5412, and along the axial direction of the first position limiting member 541, at least a portion of the orthogonal projection of the columnar portion 5412 is located inside the orthogonal projection of the first flange portion 5411, and the third gasket 543 is positionally limited between the first flange portion 5411 and the second bearing 252. With this arrangement, when the electric pump device 20 is assembled to the main housing 40, the impeller unit 221 of the electric pump device 20 is arranged to face downward (in the vertical direction of the drawing), and at this time, the position of structures such as the impeller unit 221 is restricted by the position restricting unit 50, thereby enabling the assembly of the electric pump device 20 and the main housing 40. The positioning shaft 222 and the isolation sleeve 23 are injection molded as a single unit, and / or the magnetic unit 223, the impeller unit 221, the first bearing 251 and the second bearing 252 are injection molded as a single unit, thereby realizing a stable connection between each structural component and simplifying the assembly process of the fluid control device.

[0064] In order to realize a fastening connection between the first position limiting member 541 and the positioning shaft 222, the first position limiting member 541 has a first screw portion located on the columnar portion 5412, and the positioning shaft 222 has a second screw portion, and the first screw portion and the second screw portion are screw-connected. Alternatively, the first position limiting member 541 and the positioning shaft 222 may be connected by crimping.

[0065] In some other embodiments, as shown in FIG. 23 , at least a portion of the first bearing 251 is fitted between the outer circumferential side of the positioning shaft 222 and the connection portion 232 of the isolation sleeve 23, and along the axial direction of the rotor unit 22, the position limiting unit 50 is located between the magnetic unit 223 and the impeller unit 221 and includes a second position limiting member 551 and a fourth gasket 552, and the second position limiting member 551 is arranged to be positionally limited by the isolation sleeve 23 and is sealingly connected to the isolation sleeve 23. For example, the second position limiting member 551 is welded to the isolation sleeve 23 and is located on the side of the magnetic unit 223 away from the connection portion 232, the second bearing 252 is fitted between the outer circumferential side of the positioning shaft 222 and the second position limiting member 551, and the fourth gasket 552 is abutted between the second bearing 252 and the magnetic unit 223 along the axial direction of the rotor unit 22. Specifically, the second position limiting member 551 includes a second flange portion 5511 and a second columnar portion 5512, and along the axial direction of the second position limiting member 551, at least a portion of the orthogonal projection of the second columnar portion 5512 is located inside the orthogonal projection of the second flange portion 5511, and the second flange portion 5511 is sealingly connected to the isolation sleeve 23. Then, the positioning shaft 222 and the magnetic unit 223 are injection molded as a single unit, the isolation sleeve 23 and the first bearing 251 are injection molded as a single unit, and the impeller unit 221 and the positioning shaft 222 are assembled and connected. By such an arrangement, it is possible to realize axial position limiting of the rotor unit 22.

[0066] Furthermore, as shown in Figures 27 to 44, the fluid control device 1 provided in another embodiment of the present invention is similar in structure to the fluid control device of Figures 1 to 26, and the arrangement of the first housing 11, the stator unit 130, the rotor unit 22, the isolation sleeve 23, the positioning shaft 222 and the main housing 40 is all the same as or similar to the arrangement of Figures 1 to 26. The fluid control devices provided by the two embodiments have at least the following differences: the number of driving members 13 included in the driving unit 100 is four, two of which include stator units and the other two of which include motors; the number of fluid subunits LK provided by the embodiments of the present invention is four, two of which include pump units 20 and the other two of which include valve units 30.

[0067] Regarding the drive unit 100, by combining Figures 18 to 26, Figures 29 to 31, and Figures 34 to 36, the drive unit 100 further includes a first housing 11 and a second housing 12, and the drive unit 100 has a first accommodating cavity 101, and the first housing 11 and the second housing 12 form at least a portion of the wall of the first accommodating cavity 101, and in this embodiment, the second housing 12 includes a top cap portion, and the top cap portion and the bottom wall portion 111 are arranged opposite each other along the height direction of the drive unit 100, and the first housing 11 and the second housing 12 form the first accommodating cavity 101 so as to be fitted together, and at least a portion of the at least two drive members 13 are located in the first accommodating cavity 101. As a result, at least two drive members 13 are all integrated into one drive unit 100, and compared to a case in which multiple drive units are arranged separately, the number of lead wires can be reduced and the space occupied by the drive unit 100 can be made smaller. Preferably, all of the driving members 13 are connected to the first housing 11 so as to be positionally restricted, or some of the driving members 13 are connected to the first housing 11 so as to be positionally restricted, although the present invention is not limited thereto.

[0068] In the drive unit 100, the first housing 11 includes a bottom wall portion 111, a position limiting portion 112 and a peripheral side wall 113, and the peripheral side wall 113 and the bottom wall portion 111 are connected to the position limiting portion 112. For example, the peripheral side wall 113, the bottom wall portion 111 and the position limiting portion 112 are injection molded as an integral structure and fixed, or welded to be fixedly connected, or connected so as to be positionally limited by fasteners or the like. At least a portion of the position limiting portion 112 protrudes from the bottom wall portion 111 along the height direction of the drive unit 100, the bottom wall portion 111 and the peripheral side wall 113 form part of the wall portion of the first accommodating cavity 101, and at least one drive member 13 includes a stator unit 130, and the drive member including the stator unit 130 is defined as a first drive member, and at least a portion of this first drive member is connected so as to be positionally restricted within the position limiting portion 112. At least a portion of the stator unit 130 included in the first drive member is located within the position limiting portion 112, or the first drive member may further include a pump housing, with at least a portion of the stator unit 130 being located within a cavity of the pump housing. For example, the stator unit 130 may be fixed to the pump housing as an insert material, injection molded, or assembled within a cavity in the pump housing, with at least a portion of the pump housing, or the entire pump housing and stator unit 130, being located within the position limiting portion 112. By connecting at least a portion of the first drive member so as to restrict its position within the position limiting portion 112, at least two stator units 130 can be integrated into one drive unit 100. Compared to the arrangement of multiple drive devices, the fluid control device of the present invention reduces the space occupied by the drive unit 100 and improves the integration degree of the drive unit 100.

[0069] In this embodiment, the number of driving members 13 included in the driving unit 100 is four, and there are gaps between the orthogonal projections of these four driving members 13 along the height direction of the driving unit 100. Two driving members 13 include stator units 130, and these two stator units 130 are both connected to the corresponding position limiting portions 112 so as to be positionally limited, and are located within the corresponding position limiting portions 112. Or, in some other embodiments, one driving member 13 of the driving unit 100 may include a stator unit 130, and the other driving member may be a driving member such as a motor, thereby realizing the integration of different types of driving members 13.

[0070] In order to conveniently limit the position of the stator unit 130, at least a portion of the position limiting portion 112 extends from the bottom wall portion 111 in a direction away from the first accommodating cavity 101, in which case, at least a portion of the position limiting portion 112 extends from the bottom wall portion 111 in a direction approaching the fluid unit, and at least a portion of the position limiting portion 112 is arranged to protrude from the bottom wall portion 111 in a direction away from the second housing 12. Preferably, the stator unit 130 is fixed to the position limiting portion 112 so as to be injection molded, and the injection molding fixation in this specification means injection molding as an integral structure, specifically, injection molding the stator unit 130 as an insert material and integrally with the first housing 11. As a result, the stator unit 130 and the position limiting portion 112 are injection molded as an integral structure, in which case, when injection molded, electrical connection lines are pulled out from the stator unit 130 and electrically connected to the control member by the electrical connection lines, or the position limiting portion 112 includes an attachment cavity QS, at least a portion of the stator unit 130 is located in the attachment cavity QS, and the stator unit 130 is connected to the first housing 11 so as to be positionally limited by a method such as a fastener. With this arrangement, the stator unit 130 is arranged so that its position is restricted by the position restricting portion 112 . When at least two driving members 13 each include a stator unit 130, all of the stator units 130 are injection molded as a single unit with the position limiting portion 112, or all of the stator units 130 are assembled within an attachment cavity QS formed from the position limiting portion 112, or some of the stator units 130 are injection molded as a single unit with the position limiting portion 112, and some other stator units 130 are injection molded as a single unit with the position limiting portion 112.

[0071] Or, as shown in FIG. 29, in order to realize the function of the drive member, the drive unit of the present invention further includes a control member 15 which is a circuit board, and the drive member including the stator unit 130 is defined as the first drive member, and the first drive member further includes a pump housing 135, a transition terminal 134 connected to the pump housing 135, and a connecting plate 136, and the stator unit 130 is arranged separately from the first housing 11, in this case, the stator unit 130 is assembled in an installation cavity QS formed from the position limiting portion 112, and at least a portion of the stator unit 130 and the connecting plate 136 are both located in the cavity of the pump housing 135, and the pump housing 135 is sealed and connected to the first housing 11. For example, the pump housing 135 may be sealingly connected to the first housing 11 by a sealing ring, or the pump housing 135 may be injection molded as a single piece with the position limiting portion 112 of the first housing 11 . The stator unit 130 includes a coil winding 1303, which is electrically connected to a connection pin in the transition terminal 134 by a conductive member in the connection plate 136, and a portion of the transition terminal 134 is located in the first accommodating cavity 101 through the bottom wall portion 111, and the transition terminal 134 is electrically connected to the control member 15. Here, the driving member in this specification includes a stator unit 130 or a motor 132, and the driving member may further include a lead wire structure or a terminal structure, by which the control member 15 is electrically connected to the stator unit 130 or the motor 132.

[0072] In order to realize an electrical connection between the stator unit 130 and the control member 15, the first housing 11 is provided with a metal conductive structure which is injection molded as a single unit with the first housing 11 and which is embedded within the first housing 11. Insulation displacement connectors (IDC) may be used for the output terminals 1304 of the stator unit 130, with electrical connection to the control member 15 by IDC pins.

[0073] As shown in FIG. 36, the fluid control device further includes an isolation sleeve 23, a portion of which is located on the inner periphery of the stator unit 130, and preferably, the isolation sleeve 23 is injection molded as an integral structure with the first housing 11, in which case the stator unit 130 is injection molded as an integral structure with the position limiting portion 112 or is located within the mounting cavity QS of the position limiting portion 112. Alternatively, as shown in Figures 19 to 24, the isolation sleeve 23 is injection molded as an integral structure with the stator unit 130, or at least a portion of the stator unit 130 is located within a cavity formed by the isolation sleeve 23. In this case, the isolation sleeve 23 and the stator unit 130 are arranged separately from the first housing 11 as a whole and are hermetically connected to it, and a sealing ring is provided between the overall structure formed by the isolation sleeve 23 and the stator unit 130 and the first housing 11, and the sealing ring is clamped to achieve a sealed arrangement between the overall structure and the first housing 11. By such an arrangement, a position limiting arrangement and a sealed connection between the isolation sleeve 23 and the first housing 11 can be achieved.

[0074] Furthermore, when the stator unit 130 and the position limiting portion 112 are injection molded as an integral structure, the isolation sleeve 23 and the first housing 11 are injection molded as an integral structure, or the isolation sleeve 23 and the first housing 11 are arranged as separate bodies and are hermetically connected, and when the stator unit 130 is assembled into the mounting cavity QS of the position limiting portion 112, the isolation sleeve 23 and the first housing 11 are injection molded as an integral structure, or the isolation sleeve 23 and the first housing 11 are arranged as separate bodies and are hermetically connected, or the isolation sleeve 23 and the stator unit 130 are injection molded as an integral structure, and the isolation sleeve 23 and the stator unit 130 are, as a whole, arranged separately from the first housing 11 and hermetically connected. When the number of stator units 130 is at least two, the position limiting connection methods between different stator units 130 and the first housing 11 may be similar or different, and the connection methods between the isolation sleeves 23 corresponding to the different stator units 130 and the first housing 11 may be similar or different.

[0075] As shown in FIG. 25, a driving member including the stator unit 130 is defined as a first driving member, and the first driving member further includes a pump housing 135, a transition terminal 134 connected to the pump housing 135, and a connecting plate 136, the stator unit 130 is arranged separately from the first housing 11, at least a portion of the stator unit 130 and the connecting plate are both located in a cavity of the pump housing 135, and the pump housing 135 is sealedly connected to the first housing 11. For example, as shown in FIG. 13, the pump housing 135 may be sealingly connected to the first housing 11 by a sealing ring, or as shown in FIG. 14, the pump housing 135 is injection molded as a single unit with the position limiting portion 112 of the first housing 11. The stator unit 130 includes a coil winding 1303, which is electrically connected to a connection pin in the transition terminal 134 by a conductive member in the connection plate 136, and a portion of the transition terminal 134 is located in the first accommodating cavity 101 through the bottom wall portion 111, and the transition terminal 134 is electrically connected to the control member 15. Here, the driving member in this specification includes the stator unit 130 or the motor 132, and may further include a lead structure or a terminal structure that electrically connects the stator unit 130 or the motor 132 to the control member 15.

[0076] The fluid unit 200 includes a main housing 40, which includes a cavity housing 45 and a flow path plate 44, and the flow path plate 44 is connected between the two cavity housings 45. The main housing 40 has a first cavity 401, a second cavity 402, a first hole path 404, a second hole path 405, a plurality of flow paths 406, and a communicating passage 407, and the first hole path 404 and the second hole path 405 are both connected to the first cavity 401. At least a portion of the pump unit 20 is located in the first cavity 401, and at least a portion of the valve unit 30 is located in the second cavity 402. The first hole path 404 corresponding to one pump unit 20 is connected to one flow path 406 located on the outer periphery of one valve unit 30.

[0077] In order to realize fluid flow within the fluid control device 1, at least a portion of the main housing 40 is located on the side of the first housing 11 away from the first accommodating cavity 101, and as shown in FIG. 27, at least a portion of the main housing 40 is located on the side of the first housing 11 away from the second housing 12, and the main housing 40 further includes a connecting pipe 41, which may be arranged along the circumferential direction of the main housing 40 or may be integrated on at least one mounting surface.

[0078] The pump unit 20 in this embodiment includes a rotor unit 22 , and an isolation sleeve 23 of the fluid control device is provided to cover the outer periphery of the rotor unit 22 . The isolating sleeve 23 is disposed to isolate the stator unit 130 and the corresponding rotor unit 22 from each other and to prevent working fluid from entering the space in which the stator unit 130 resides. The rotor unit 22 includes an impeller unit 221 and a magnetic unit 223, the pump unit 20 further includes a positioning shaft 222, the impeller unit 221 is fitted on the outer periphery of the positioning shaft 222, and at least a part of the impeller unit 221 is located in the first cavity 401, at least a part of the first hole 404 and the impeller unit are arranged along the height direction of the pump unit 20, and the positions of the second hole 405 and the impeller unit 221 correspond to each other, and preferably At least a portion of the wall of the first hole passage 404 is arranged coaxially with the rotation axis of the impeller unit 221, and the mouth of the second hole passage 405 is located at the circumferential edge of the impeller unit 221, and the fluid enters the impeller unit 221 from the first hole passage 404 and is discharged from the second hole passage 405 by the action of the centrifugal force of the impeller unit 221. In this case, the first hole passage 404 may be an inlet hole passage of the pump unit 20, and the second hole passage 405 may be an outlet hole passage of the pump unit 20.

[0079] The main housing 40 comprises a flow path plate 44 and a cavity housing 45, the cavity housing 45 and the flow path plate 44 are injection molded as an integral structure, the first cavity 401, the second cavity 402 and the flow path 406 are located in the cavity housing 45, the communicating passage 407 is located in the flow path plate 44, and at least a portion of the flow path plate 44 is connected between the two fluid subunits LK. For example, the flow path plate 44 may be connected between the pump unit 20 and the valve unit 30, or between two valve units 30. In an embodiment of the present invention, the flow path plate 44 and the cavity housing 45 are integrated together to reduce the number of pipe connections between each cavity housing 45, thereby improving the integration of the fluid control device. Furthermore, the multiple flow paths 406 are distributed on the outer periphery of the second cavity 402, and one flow path 406 is connected to one of the first hole path 404 and the second hole path 405 by one connecting passage 407, and the valve body 30 includes a conductive cavity 311 that connects at least two flow paths 406, and the extension direction of the connecting hole paths 407 that communicate with each other, the extension direction of the flow paths 406, and the extension direction of the first hole path 404 or the second hole path 405 intersect.

[0080] Preferably, the pump unit 20 further includes a pump cap 24, which is sealingly connected to the isolation sleeve 23, specifically, the pump cap 24 is welded and arranged on the isolation sleeve 23, the rotor unit 22 is located in a space formed between the pump cap 24 and the isolation sleeve 23, the pump cap 24 has a first port 241 and a second port 242, the rotor unit 22 can drive a fluid to flow between the first port 241 and the second port 242, at least a portion of the pump cap 24 is located in the first cavity 401, and the pump cap 24 is sealingly connected to the main housing 40, and the first port 241 is connected to the first hole 404 and the second port 242 is connected to the second hole 405. The pump unit 20 comprises a pump cavity 201, a first passage 202 and a second passage 203, the pump cap 24 forms at least a part of the wall of the pump cavity 201, the first passage 202 and the second passage 203 may be located in the pump cap 24, the first port 241 is located in the first passage and the second port 242 is located in the second passage, at least a part of the first passage 202 is located in the first hole 404, and at least a part of the second passage 203 is located in the second hole 405.

[0081] To achieve a sealed connection between the pump cap 24 and the main housing 40, a sealing ring is sandwiched between the pump cap 24 and the main housing 40, or the pump cap 24 and the main housing 40 are injection molded as a unitary structure, as shown in FIG. 26. As used herein, the two structural components may be formed as a unitary structure in an injection molding process or other process, to which the invention is not limited.

[0082] In order to facilitate fluid communication within the main housing 40, the first cavity 401 includes a first sub-cavity A1 and a second sub-cavity A2, the second cavity 402 includes a third sub-cavity A3 and a fourth sub-cavity A4, the two pump units are defined as a first pump unit 20d and a second pump unit 20e, and the two valve units are defined as a first valve unit 30c and a second valve unit 30e, at least a portion of the first pump unit 20d is located in the first sub-cavity A1, at least a portion of the second pump unit 20e is located in the second sub-cavity A2, at least a portion of the first valve unit 30c is located in the third sub-cavity A3, and at least a portion of the second valve unit 30d is located in the fourth sub-cavity A4, and the first sub-cavity A1 and the second sub-cavity A3 are both communicated with the third sub-cavity A3. Such an arrangement provides fluid exchange between the two pump units and one valve unit within the main housing 40.

[0083] The first cavity 401 and the second cavity 402 both have openings on the surface of the main housing 40, and in order to realize assembly of the pump unit 20 and the valve unit 30, the first mounting port of the first cavity 401 and the second mounting port of the second cavity 402 are respectively provided on different surfaces of the main housing 40. As shown in FIG. 27, the opening of the first cavity 401 and the opening of the second cavity 402 are provided on opposite sides in the height direction of the main housing 40, and in this case, the main housing 40 includes a cavity housing 45 and a bottom cap, and the bottom cap and the cavity housing 45 can be hermetically connected by a process such as welding.

[0084] The cavity housing 45 includes a cavity housing side wall and a cavity housing top wall, a portion of the cavity housing side wall and the cavity housing top wall form at least a portion of the wall of the first cavity 401, the cavity housing side wall and the cavity housing top wall are of an integral structure, and the cavity housing top wall and the first mounting port are located on the same side of the main housing 40. This arrangement reduces assembly errors between the valve unit 30 and the corresponding drive member 13, improves the strength of the cavity housing 45, and positions the valve unit 30 and the drive member corresponding to the pump unit 20 on the same side of the main housing 40.

[0085] The main housing 40 includes a first end S1 and a second end S2 arranged opposite each other along the height direction of the main housing 40, with a first mounting opening of the first cavity 401 located at the first end S1 and a second mounting opening of the second cavity 402 located at the second end S2, and the drive unit 100 located on the side of the first end S1 away from the second end S2. With this arrangement, the pump unit 20 is assembled to the main housing 40 on one side of the main housing 40, and the valve unit 30 is assembled to the main housing 40 from the other side of the main housing 40, thereby realizing that the drive members of the drive pump unit 20 and the drive valve unit 30 are arranged on the same side, and further realizing the integration of multiple drive members. When the number of the valve units 30 is at least two, all the valve units 30 are attached to the same side of the main housing 40 to unify the assembly standard. And all the pump units 20 are mounted from the other side of the main housing 40 to reduce the assembly error and to better realize the coaxiality between the at least two valve units 30 and the corresponding driving members 13 . Here, the first mounting port of the first cavity 401 and the second mounting port of the second cavity 402 may be provided on the same side of the main housing 40, so that the pump unit 20 and the valve unit 30 are both assembled from the same side of the main housing, although the present invention is not limited thereto.

[0086] The valve body structures in the two valve units 30 provided in this embodiment are similar, and include a first valve unit 30c and a second valve unit 30d, one of which is defined as a first valve body 31c and the other valve body is defined as a second valve body 31d, and the number of flow paths 406 located on the outer periphery of the first valve body 31c is at least five, and the number of flow paths 406 located on the outer periphery of the second valve body 31d is at least five. Furthermore, one of the pump units 20 is defined as a first pump unit 20d, and the other is defined as a second pump unit 20e. The first hole passage 404d corresponding to the first pump unit 20d and the first hole passage 404e corresponding to the second pump unit 20e are both connected to the third sub-cavity A3 via a connecting passage 407. The flow passage 406 located on the outer periphery of the first valve body 31c is defined as a first flow passage 4061, which is located in the side wall of the third sub-cavity A3. The flow passage 406 located on the outer periphery of the second valve body 31d is defined as a second flow passage 4062, which is located in the side wall of the fourth sub-cavity A4. In this embodiment, the number of first flow paths 4061 is five, and the number of second flow paths 4062 is five. The numbers of first flow paths 4061 and second flow paths 4062 can be set according to the user's needs, for example, three, four, six, seven or more, and the numbers of first flow paths 4061 and second flow paths 4062 can be the same or different. With such an arrangement, one pump unit 20 and one valve unit 30 are engaged to provide fluid control.

[0087] In order to integrate each pump unit into the drive member of the valve unit, along the height direction of the fluid control device, the sides of the first pump unit 20d and the second pump unit 20e that are away from the main housing 40 are located at the same height and are assembled and attached to their corresponding stator units, and a part of the valve unit 30 and a part of the pump unit 20 are located at the same height, thereby reducing the axial height of the fluid control device. Specifically, a portion of the first valve unit 30c, a portion of the first pump unit 20d, and a portion of the second pump unit 20e may all be located at the same height.

[0088] Furthermore, the main housing 40 further includes a first communication passage 407d and a second communication passage 407e, the first communication passage 407d communicating between the first sub-cavity A1 and the third sub-cavity A3, and the second communication passage 407e communicating between the second sub-cavity A2 and the third sub-cavity A3, and at least a portion of the first communication passage 407d and at least a portion of the second communication passage 407e are arranged at intervals along the circumferential direction of the wall portion of the third sub-cavity A3.

[0089] In order to better realize fluid exchange between the pump unit 20 and the valve unit 30, as shown in Figures 36 and 37, the main housing 40 includes a first hole passage 404 and a second hole passage 405, where the first hole passage 404 is an inlet passage of the pump unit 20 and the second hole passage 405 is an outlet passage of the pump unit 20. In this embodiment, the first hole 404 includes a first sub-hole 404d and a second sub-hole 404e, the second hole 405 includes a third sub-hole 405d and a fourth sub-hole 405e, the first sub-hole 404d and the third sub-hole 405d are both connected to the first sub-cavity A1, the second sub-hole 404e and the fourth sub-hole 405e are both connected to the second sub-cavity A2, the first pump unit 20d includes a first impeller unit 221d, and the second pump unit 20e includes a second impeller unit 221c. The impeller unit 221e includes at least a portion of the wall of the first sub-hole 404d arranged coaxially with the rotation axis of the first impeller unit 221d, at least a portion of the mouth of the third sub-hole 405d located at a circumferential edge of the first impeller unit 221d, at least a portion of the wall of the second sub-hole 404e arranged coaxially with the rotation axis of the second impeller unit 221e, and at least a portion of the mouth of the fourth sub-hole 405e located at a circumferential edge of the second impeller unit 221e. The first sub-hole passage 404d communicates with the third sub-cavity A3 via a first communication passage 407d, and the second sub-hole passage 404e communicates with the third sub-cavity A3 via a second communication passage 407e.

[0090] Combining Figures 27 to 44, the first valve body 31c includes at least three conductive cavities, and the conductive cavities of the first valve body 31c connect at least two first flow paths 4061 and isolate at least one first flow path 4061, and the conductive cavity of the second valve body 31d connects at least two second flow paths 4062 and isolates at least one second flow path 4062. Such an arrangement allows for multiple operating modes of the fluid control device. In this specification, flow path isolation means that the flow path does not communicate with any other flow paths after passing through the corresponding valve disc.

[0091] The operation mode of the first valve unit 30c will be explained below. The first flow paths corresponding to the first valve unit 30c are defined as the first sub-flow path P1, the second sub-flow path P2, the third sub-flow path P3, the fourth sub-flow path P4, and the fifth sub-flow path P5, respectively, and the second sub-flow path P2 is connected to a hole path corresponding to the first pump unit 20d, and the fourth sub-flow path P4 is connected to a hole path corresponding to the second pump unit 20e. By adjusting the positions of the multiple first flow paths on the corresponding walls of the third sub-cavity A3 and the opening angles between the three conductive cavities of the first valve body 31c, the first valve unit 30c of the embodiment of the present invention has at least one of the following operation modes:

[0092] In a first operating mode, as shown in FIG. 41, the first valve body 31c is located in a first position, one conductive cavity of the first valve body 31c connects the first sub-flow path P1 and the fourth sub-flow path P4, another conductive cavity connects the second sub-flow path P2 and the third sub-flow path P3, and another conductive cavity isolates the fifth sub-flow path P5.

[0093] In the second operating mode, as shown in FIG. 42, the first valve body 31c is in a second position, one conductive cavity of the first valve body 31c connects the fifth sub-flow passage P5 and the fourth sub-flow passage P4, another conductive cavity connects the second sub-flow passage P2 and the third sub-flow passage P3, and another conductive cavity isolates the first sub-flow passage P1.

[0094] In a third operating mode, as shown in FIG. 43, the first valve body 31c is in a third position, one conductive cavity of the first valve body 31c connects the third sub-flow path P3 and the fourth sub-flow path P4, another conductive cavity connects the second sub-flow path P2 and the first sub-flow path P1, and another conductive cavity isolates the fifth sub-flow path P5.

[0095] In a fourth operating mode, as shown in FIG. 44, the first valve body 31c is in a fourth position, one conductive cavity of the first valve body 31c connects the third sub-flow path P3 and the fourth sub-flow path P4, another conductive cavity connects the second sub-flow path P2 and the fifth sub-flow path P5, and another conductive cavity isolates the first sub-flow path P1.

[0096] The corresponding operation mode of the second valve unit 30d provided in the embodiment of the present invention for opening the second flow path may be similar to the operation mode of the first valve unit 30c, and therefore will not be described in detail. The flow paths corresponding to the two valve units may communicate with each other through an external connecting pipe, or the flow paths may be arranged in the main housing 40, and the present invention does not specifically mention the same.

[0097] Furthermore, the drive unit 100 of the fluid control device 1 includes a first housing 11, a first stator unit 130d, a second stator unit 130e, a first motor 132c and a second motor 132d, the first pump unit 20d includes a first rotor unit 22d, and the second pump unit 20e includes a second rotor unit 22e. The first rotor unit 22d can be positioned in the magnetic field range of the first stator unit 130d, the second rotor unit 22e can be positioned in the magnetic field range of the second stator unit 130e, the first valve body 31c of the first valve unit 30c is connected to the first motor 132c for transmission, and the second valve body 31d of the second valve unit 30d is connected to the second motor 132d for transmission. The drive unit 100 has a first accommodating cavity 101, the first housing 11 forms at least a portion of the wall of the first accommodating cavity 101, and at least a portion of the first stator unit 130d, at least a portion of the second stator unit 130e, at least a portion of the first motor 132c, and at least a portion of the second motor 132d are all located in the first accommodating cavity 101.

[0098] In addition, the drive unit 100 further includes a control member 15 located in the first accommodating cavity 101, and the first stator unit 130d, the second stator unit 130e, the first motor 132c and the second motor 132d are all electrically connected to the control member 15. In order to reduce the area of ​​the control member 15, the first pump unit 20d, the first valve unit 30c, the second pump unit 20e and the second valve unit 30d are arranged at intervals along the outer circumferential direction of the fluid control device by combining FIG. 26, the drive unit 100 further includes a first gear unit 133c and a second gear unit 133d, the first motor 132c is connected to the first valve body 31c so as to transmit power by the first gear unit 133c, the second motor 132d is connected to the second valve body 31d so as to transmit power by the second gear unit 133d, and the first motor 132c and The second motor 132d is arranged along a first direction X, the first stator unit 130d and the second stator unit 130e are arranged along a second direction Y, the first direction X and the second direction Y intersect, a part of the first gear unit 133c and a part of the second gear unit 133d are located between the first motor 132c and the second motor 132d, thereby concentrating the control parts of the first motor 132c and the second motor 133d, and the output terminal of the first stator unit 130d and the output terminal of the second stator unit 130e are close to each other and are at an intermediate position of the drive unit 100. In this case, the control parts of the pump unit 20 and the control parts of the valve unit 30 may be arranged centrally, reducing the area of ​​the control member 15 .

[0099] Furthermore, as shown in FIG. 36, the fluid control device 1 further includes a position limiting unit 50 located in the fluid unit 200, and the pump unit 20 includes a rotor unit 22, a positioning shaft 222 and an isolation sleeve 23, at least a portion of the rotor unit 22 and the stator unit 130 are fitted together, the isolation sleeve 23 is arranged to cover a portion of the outer circumferential side of the rotor unit 22, and at least a portion of the isolation sleeve 23 is located between the stator unit 130 and the rotor unit 22, the positioning shaft 222 is fitted inside the rotor unit 22, and a first axial side of the positioning shaft 222 is arranged so as to be positionally restricted by the isolation sleeve 23, and the position limiting unit 50 is arranged close to a second axial side of the positioning shaft 222 and arranged so as to be positionally restricted by the rotor unit 22, for example, the position limiting unit 50 is abutted against the rotor unit 22. In this embodiment, the axial direction of the positioning shaft 222 and the height direction of the fluid control device are parallel to or overlap each other. With this arrangement, both axial sides of the positioning shaft 222 are limited in position, improving the axial distortion of the positioning shaft 222 and further improving the axial distortion of the rotor unit 22, thereby reducing noise of the pump unit 20.

[0100] The pump unit 20 further includes a pump cap 24, at least a portion of which is located on the outer circumferential side of the impeller unit 221 and is located in the first cavity 401, and at least a portion of the position limiting unit 50 is located in the pump cap 24, the position limiting unit 50 having a groove 521, and the second side end of the positioning shaft 222 is located in the groove 521 and abuts against the bottom wall portion of the groove 521. With this arrangement, the isolation sleeve 23 and the pump cap 24 are engaged with each other to provide axial positional limiting for the rotor unit 22 . Preferably, the pump cap 24 is injection molded as a single unit with the main housing 40, or is provided separately from the main housing 40 and connected to it so as to be positionally limited, in which case a sealing ring is provided between the pump cap 24 and the main housing 40 to achieve a seal between the two.

[0101] The rotor unit 22 includes a first bearing 251 and a second bearing 252 arranged along the axial direction of the rotor unit 22, and along the axial direction of the rotor unit 22, the first bearing 251 is located between the connection portion 232 of the isolation sleeve 23 and the magnetic unit 223, and the second bearing 252 is located between the magnetic unit 223 and the position limiting unit 50. Such an arrangement allows rotation of the magnetic element 223 and the impeller unit 221 in the rotor unit 22.

[0102] As shown in FIG. 26, the position limiting unit 50 includes a first gasket 53 and a pump cap 24 , and the first gasket 53 is abutted between the second bearing 252 and the pump cap 24 . Specifically, the pump cap 24 includes a support portion 52 and at least two connecting ribs 51 , and a first gasket 53 is abutted between the second bearing 252 and the support portion 52 . Such an arrangement can reduce wear between the pump cap 24 and the second bearing 252. The positioning shaft 222 and the isolation sleeve 23 are injection molded as a single unit, and / or the magnetic unit 223, the impeller unit 221, the first bearing 251 and the second bearing 252 are injection molded as a single unit, thereby realizing a stable connection between each structural component and simplifying the assembly process of the fluid control device.

[0103] In some other embodiments, as shown in FIG. 22, the position limiting unit 50 includes a first position limiting member 541, a second gasket 542 and a third gasket 543, the first position limiting member 541 is fastened and connected to the positioning shaft 222, the second gasket 542 is abutted between the first bearing 251 and the connection portion 232 along the axial direction of the rotor unit 22, the first position limiting member 541 includes a first flange portion 5411 and a columnar portion 5412, and along the axial direction of the first position limiting member 541, at least a portion of the orthogonal projection of the columnar portion 5412 is located inside the orthogonal projection of the first flange portion 5411, and the third gasket 543 is positionally limited between the first flange portion 5411 and the second bearing 252. With this arrangement, when the electric pump device 20 is assembled to the main housing 40, the impeller unit 221 of the electric pump device 20 is arranged to face downward (in the vertical direction of the drawing), and at this time, the position of structures such as the impeller unit 221 is restricted by the position restricting unit 50, thereby enabling the assembly of the electric pump device 20 and the main housing 40. In this embodiment, the positioning shaft 222 and the isolation sleeve 23 are injection molded as a single unit, and / or the magnetic unit 223, the impeller unit 221, the first bearing 251 and the second bearing 252 are injection molded as a single unit, thereby realizing a stable connection between each structural component and simplifying the assembly process of the fluid control device.

[0104] In order to realize a fastening connection between the first position limiting member 541 and the positioning shaft 222, the first position limiting member 541 has a first screw portion located on the columnar portion 5412, and the positioning shaft 222 has a second screw portion, and the first screw portion and the second screw portion are screw-connected. Alternatively, the first position limiting member 541 and the positioning shaft 222 may be connected by crimping.

[0105] In some other embodiments, as shown in FIG. 23 , at least a portion of the first bearing 251 is fitted between the outer circumferential side of the positioning shaft 222 and the connection portion 232 of the isolation sleeve 23, and along the axial direction of the rotor unit 22, the position limiting unit 50 is located between the magnetic unit 223 and the impeller unit 221 and includes a second position limiting member 551 and a fourth gasket 552, and the second position limiting member 551 is arranged to be positionally limited by the isolation sleeve 23 and is sealingly connected to it. For example, the second position limiting member 551 is welded to the isolation sleeve 23 and is located on the side of the magnetic unit 223 away from the connection portion 232, the second bearing 252 is fitted between the outer circumferential side of the positioning shaft 222 and the second position limiting member 551, and the fourth gasket 552 is abutted between the second bearing 252 and the magnetic unit 223 along the axial direction of the rotor unit 22. Specifically, the second position limiting member 551 includes a second flange portion 5511 and a second columnar portion 5512, and along the axial direction of the second position limiting member 551, at least a portion of the orthogonal projection of the second columnar portion 5512 is located inside the orthogonal projection of the second flange portion 5511, and the second flange portion 5511 is sealingly connected to the isolation sleeve 23. In this embodiment, the positioning shaft 222 and the magnetic unit 223 are injection molded as a single unit, the isolation sleeve 23 and the first bearing 251 are injection molded as a single unit, and the impeller unit 221 and the positioning shaft 222 are assembled and connected. By such an arrangement, it is possible to realize axial position limiting of the rotor unit 22.

[0106] As described above, according to the fluid control device 1 provided by the present invention, the fluid control device 1 includes a drive unit 100 and at least two fluid subunits LK, the drive unit 100 includes at least two drive members 13, at least one drive member 13 includes a stator unit 130, at least a portion of the stator unit 130 is connected to be positionally restricted within the position restricting portion 112 of the first housing 11, and at least one fluid subunit LK includes a pump unit 20, the pump unit 20 includes a rotor unit 22, the rotor unit 22 is disposed within the magnetic field range of the corresponding stator unit 130, and the drive member 13 drives the corresponding fluid subunit LK to operate, so that the drive unit 100 includes a drive member 13 that drives the at least two fluid subunits LK to operate, and compared to disposing a separate drive device for each fluid subunit LK, the fluid control device 1 provided by the embodiment of the present invention reduces the space occupied by the drive unit 100 and improves the degree of integration of the drive unit 100. Furthermore, at least two fluid subunits LK may be integrated into one main housing 40, thereby improving the integration degree of the fluid control device 1 and reducing the space occupied by the fluid control device 1. Furthermore, by providing the position limiting unit 50, it is possible to limit the axial position of the positioning shaft 222, and furthermore, it effectively exerts the effect of limiting the axial position of the rotor unit 22 and other structures.

[0107] According to another aspect, the embodiment of the present invention further provides an electric pump device, the electric pump device including a stator unit 130, a pump unit 20 and a position limiting unit 50, the pump unit 20 including a rotor unit 22, a positioning shaft 222, an isolation sleeve 23 and a pump cap 24, at least a portion of the rotor unit 22 and the stator unit 130 are fitted together, preferably, at least a portion of the rotor unit 22 is located inside the stator unit 130, the isolation sleeve 23 is provided to cover a portion of an outer circumferential side of the rotor unit 22, and at least a portion of the isolation sleeve 23 is located between the stator unit 130 and the rotor unit 22, the positioning shaft 222 is fitted inside the rotor unit 22, a first axial side of the positioning shaft 222 is arranged to be positionally limited by the isolation sleeve 23, and the position limiting unit 50 is arranged close to a second axial side of the positioning shaft 222 and abuts against the rotor unit 22. By such an arrangement, axial positional limits of the rotor unit 22 and the positioning shaft 222 are realized. In the embodiment of the present invention, the stator unit 130, the pump unit 20 and the position limiting unit 50 have the same or similar structures as the stator unit 130, the pump unit 20 and the position limiting unit 50 provided in any of the embodiments of Figures 1 to 27, so no detailed description will be given.

[0108] The rotor unit 22 includes a magnetic unit 223 and an impeller unit 221, at least a portion of the impeller unit 221 and the magnetic unit 223 are arranged along the axial direction of the rotor unit 22, at least a portion of the magnetic unit 223 is fitted into the inner surface side of the stator unit 130, the isolation sleeve 23 includes an end wall portion 231 and a connecting portion 232, and the extension direction of the end wall portion 231 intersects with the axial direction of the rotor unit 22, the rotor unit 22 includes a first bearing 251 and a second bearing 252, and the first bearing 251 and the second bearing 252 are arranged along the axial direction of the rotor unit 22, the first bearing 251 is located between the connecting portion 232 and the magnetic unit 223, and the second bearing 252 is located between the magnetic unit 223 and the position limiting unit 50. Such an arrangement realizes stable rotation of the rotor unit 22 and conveniently limits the axial position of the rotor unit 22 .

[0109] As shown in FIG. 22, the position limiting unit 50 includes a first position limiting member 541, a second gasket 542 and a third gasket 543, and the first position limiting member 541 is fastened and connected to the positioning shaft 222, and along the axial direction of the rotor unit 22, the second gasket 542 is abutted between the first bearing 251 and the connection portion 232, and the first position limiting member 541 includes a first flange portion 5411 and a columnar portion 5412, and along the axial direction of the first position limiting member 541, at least a portion of the orthogonal projection of the columnar portion 5412 is located inside the orthogonal projection of the first flange portion 5411, and the third gasket 543 is positionally limited between the first flange portion 5411 and the second bearing 252.

[0110] Alternatively, as shown in FIG. 23, the position limiting unit 50 is located between the magnetic unit 223 and the impeller unit 221, and includes a second position limiting member 551 and a fourth gasket 552, the second position limiting member 551 is arranged to be positionally limited by the isolation sleeve 23 and is sealed connected to the isolation sleeve 23, and is located on the side of the magnetic unit 223 away from the connection portion 232, the second bearing 252 is fitted between the outer circumferential side of the positioning shaft 222 and the second position limiting member 551, and the fourth gasket 552 is abutted between the second bearing 252 and the magnetic unit 223 along the axial direction of the rotor unit 22.

[0111] The electric pump device includes a pump housing, which is arranged to cover the outside of the stator unit and at least a portion of which is located on the side of the stator unit away from the rotor unit, and the positional restriction method between the pump housing and the stator unit is similar to the positional restriction method between the first housing 11 and the stator unit 130 mentioned in any of the above embodiments. For example, the stator unit 130 and the pump housing may be injection molded as a single unit, or the stator unit 130 may be located within a cavity of the pump housing. Furthermore, when the stator unit 130 and the pump housing are injection molded as an integral structure, the isolation sleeve 23 and the pump housing may be injection molded as an integral structure, or the isolation sleeve 23 and the pump housing are arranged as separate bodies and are hermetically connected, and when the stator unit 130 is assembled into the mounting cavity QS of the pump housing, the isolation sleeve 23 and the pump housing may be injection molded as an integral structure, or the isolation sleeve 23 and the pump housing are arranged as separate bodies and are hermetically connected, or the isolation sleeve 23 and the stator unit 130 are injection molded as an integral structure, and the isolation sleeve 23 and the stator unit 130 are arranged as separate bodies from the pump housing as a whole and are hermetically connected. When the number of stator units 130 is at least two, the position limiting connection methods between different stator units 130 and the first housing 11 may be similar or different, and the connection methods between the isolation sleeves 23 corresponding to the different stator units 130 and the first housing 11 may be similar or different.

[0112] According to another aspect, combining FIGS. 1 to 45, the present invention further provides a method 1000 for manufacturing a fluid control device, the method 1000 for manufacturing a fluid control device including the following steps.

[0113] Step S110: The driving unit 100 is formed.

[0114] Then, step S100 of forming the drive unit 100 includes a step of providing a first housing 11 and at least two drive members 13, where the first housing 11 has a first accommodating cavity 101, the first housing 11 includes a bottom wall portion 111 and a position limiting portion 112, the bottom wall portion 111 forms part of the wall portion of the first accommodating cavity 101, at least a part of the position limiting portion 112 protrudes from the bottom wall portion 111, and at least one drive member 13 includes a stator unit 130, and a step of connecting at least a part of the stator unit 130 so as to limit its position within the position limiting portion 112. The position limiting portion 112 protrudes from the bottom wall portion 112 along the height direction of the drive unit 100 and extends in a direction away from the first accommodating cavity 101.

[0115] The step of connecting at least a portion of the stator unit 130 so as to restrict its position within the position limiting portion 112 includes a step of using the stator unit 130 as an injection molding insert material and injection molding at least a portion of the stator unit 130 and the position limiting portion 112 as an integral structure by an injection molding process, or a step of the position limiting portion 112 including an attachment cavity QS and attaching at least a portion of the stator unit 130 to the attachment cavity QS and engaging with the position limiting portion 112 of the first housing 11 so as to restrict its position, whereby at least a portion of the output terminal 1304 in the stator unit 130 is positioned in the first accommodating cavity 101, whereby the output terminal 1304 is electrically connected to the control member 15 in the drive unit 100 or an external control member.

[0116] In some other embodiments, the fluid control device may include an isolation sleeve 23, in which case, after a step of connecting at least a portion of the stator unit 130 to restrict its position within the position limiting portion 112, the isolation sleeve 23 and the first housing 11 may be injection molded as a single structure, whereby a portion of the isolation sleeve 23 is located inside the stator unit 130. In this case, the isolation sleeve 23 is hermetically connected to the first housing 11, isolating the stator unit 130 from the outside, thereby preventing external water vapor and the like from affecting the stator unit 130.

[0117] Step S120: At least a part of the fluid unit 200 is formed.

[0118] In this embodiment, the step S300 of forming the fluidic unit 200 includes providing at least two fluidic subunits LK and a main housing 40.

[0119] In this embodiment, at least one fluid subunit LK includes a pump unit 20, and as shown in Figures 1 to 26, the number of fluid subunits LK in this embodiment is five, of which three fluid units include pump units 20 and the other two fluid units include valve units 30. In some other embodiments, the number of fluid subunits LK may be two, and both of the fluid subunits LK include a pump unit 20, or one of the fluid subunits LK includes a pump unit 20 and the other of the fluid subunits LK includes a valve unit 30. The number of fluid subunits LK may be set according to the needs of the user, and the number of pump units 20 and valve units 30 included may also be set according to the needs of the user.

[0120] The main housing 40 has a first cavity 401, a first hole passage 404 and a second hole passage 405 arranged at a distance from each other, and the first hole passage 404 and the second hole passage 405 are all connected to the first cavity 401. In this case, step S120 of forming at least a part of the fluid unit 200 further includes a step of assembling the pump unit 20 to the main housing 40 so that at least a part of the pump unit 20 is located in the first cavity 401, thereby driving the fluid to flow through the first hole passage 404 and the second hole passage 405 when the rotor unit 22 rotates. With such an arrangement, the pump unit 20 can be provided in the first cavity 401 .

[0121] When the at least two fluid subunits LK each include a pump unit 20, the multiple pump units 20 form at least a part of the fluid unit 200 after being assembled to the main housing. Specifically, the pump unit 20 includes an isolation sleeve 23 and a rotor unit 22, and in this case, before the step of assembling the pump unit 20 to the main housing 40, a step of forming the pump unit 20 is included, for example, by fitting the rotor unit 22 inside the isolation sleeve 23, assembling the isolation sleeve 23 and the rotor unit 22 into an overall structure to form the pump unit 20, and then assembling the overall structure to the main housing 40. Alternatively, when the pump unit 20 further includes the pump cap 24, the isolation sleeve 23, the rotor unit 22 and the pump cap 24 may be assembled into an entire structure. Alternatively, the step of assembling the pump unit 20 to the main housing 40 may include the steps of assembling the isolation sleeve 23 and the rotor unit 22 to the main housing 40, respectively, and then sealingly connecting the isolation sleeve 23 to the main housing 40. Alternatively, if the pump unit 20 further includes a position limiting unit 50, the position limiting unit 50 may be engaged with the positioning shaft 222 to limit the position of the entire structure, and then the entire structure may be assembled to the main housing 40; or, if the position limiting unit 50 is located in the main housing 40, the axial position limiting of structures such as the positioning shaft 222 and the rotor unit 22 may be realized after the pump unit 20 and the main housing 40 are assembled, and the present invention is not limited thereto.

[0122] And at least one fluid subunit LK includes a pump unit 20, and at least one fluid subunit LK includes a valve unit 30, and the valve unit 30 includes a valve body 31 and a valve body shaft 32, and at least one driving member 13 includes a motor 132, and the main housing 40 further includes a bottom cap and a cavity housing 45, and at this time, step S120 of forming at least a part of the fluid unit 200 includes the following steps.

[0123] Step 1: Provide a main housing 40, the main housing 40 having a first cavity 401, a second cavity 402, a first hole path 404, a second hole path 405 and a plurality of flow paths 406, the first cavity 401 and the second cavity 402 being spaced apart from each other, and the first hole path 404 and the second hole path 405 both communicating with the first cavity 401.

[0124] Step 2: The pump units 20 are assembled into the main housing 40 so that at least a portion of one pump unit 20 is positioned in one first cavity 401, and when the rotor unit 22 rotates, the fluid can be driven to flow through the first hole 404 and the second hole 405, thereby realizing the fluid driving function of the pump unit 20.

[0125] Step 3: Assemble at least a portion of the valve unit 30 into a corresponding cavity of the main housing 40, i.e., assemble at least a portion of one valve unit 30 into one second cavity 402 of the main housing 40, and connect the valve unit 30 to the main housing 40 in a position-restricting manner, so that the conductive cavity 311 of the valve body 31 can conduct at least two flow paths 406. Specifically, the valve body 31 and the valve body shaft 32 are assembled into the second cavity 402, and at least a portion of the valve body shaft 32 is connected to the output shaft of the motor 132 for transmission through the second cavity 402; or, if the drive unit 100 further includes a gear unit 133, the gear unit 133 is connected to the drive unit 100 for transmission, and at least a portion of the valve body shaft 32 is connected to the gear unit 133 for transmission through the second cavity 402.

[0126] Step 4: Sealingly connect the bottom cap to the main housing 40.

[0127] For example, a welding process is used to seal the bottom cap and the main housing, thereby realizing a position-limited connection between the valve unit 30 and the main housing 40 . The valve unit 30 includes a first valve unit 30a and a second valve unit 30b, and the main housing 40 includes a cavity housing 45, a first bottom cap 42 and a second bottom cap 43, where steps 2 and 3 may be performed simultaneously, or one of steps 2 and 3 may be performed first and then the other.

[0128] Step S130: The driving unit 100 and the hydraulic unit 200 are hermetically connected.

[0129] Then, the drive unit 100 and the pump unit 20 are engaged, for example, at least a portion of the rotor unit 22 of the pump unit 20 is positioned inside the corresponding stator unit 130, a portion of the isolation sleeve 23 is positioned between the stator unit 130 and the corresponding rotor unit 22, the rotor unit 22 is positioned within the magnetic field range of the corresponding stator unit 130, and when the coil windings in the stator unit 130 are energized, a magnetic field can be generated and the stator unit 130 can be driven to rotate the rotor unit 22. In order to realize a sealed connection between the driving unit 100 and the fluid unit 200, a sealing ring is provided between the driving unit 100 and the fluid unit 200, and the driving unit 100 and the fluid unit 200 are connected by a fastener such as a screw, and the sealing ring is compressed to realize a sealed connection between the driving unit 100 and the fluid unit 200.

[0130] The fluid subunit LK further includes a valve unit 30, the main housing 40 further includes a plurality of flow paths 406, the first cavity 401 has a first mounting port K1, the second cavity 402 has a second mounting port K2, the first mounting port K1 is located on a first side of the cavity housing 45, the second mounting port K2 is located on a second side of the cavity housing 45, the first side and the second side are respectively provided on both sides in the height direction of the cavity housing, the plurality of flow paths 406 are distributed on the outer circumferential side of the second cavity 402, and the first mounting port K1 of the first cavity 401 and the second mounting port K2 of the second cavity 402 are respectively provided on different surfaces of the main housing 40. For example, as shown in Figures 1 to 25, the first mounting opening K1 of the first cavity 401 and the second mounting opening K2 of the second cavity 402 are provided on both sides of the main housing 40, arranged opposite each other along the height direction of the main housing 40 itself.

[0131] At this time, step S120 of forming at least a part of the fluid unit 200 includes the steps of assembling the pump unit 20 to the main housing 40 from one side of the main housing 40, in which the pump unit 20 passes through a first mounting port K1 and at least a part of one pump unit 20 is positioned in one first cavity 401, and assembling at least a part of one valve unit 30 from the other side of the main housing 40 into one second cavity 402 of the main housing 40, in which at least a part of the valve unit 30 passes through a second mounting port K2 and at least a part of the valve unit 30 is positioned in the second cavity 402. When the valve unit 30 includes a valve body 31 and a valve body shaft 32, the valve body shaft 31 and the valve body 32 are passed through the second mounting port K2, so that the valve body 31 is located in the second cavity 402, and at least a part of the valve body shaft 32 is located outside the main housing 40, and the valve body shaft 32 is conveniently connected to a transmission unit such as a motor 132. When the number of pump units 20 is at least two and the number of valve units 30 is at least two, all of the pump units 20 are assembled to the main housing 40 from one side of the main housing 40 through the first mounting port K1, and all of the valve units 30 are assembled to the main housing 40 from the other side of the main housing 40 through the second mounting port K2, and then the bottom cap is hermetically connected to the cavity housing 45 of the main housing 40.

[0132] Alternatively, the method includes assembling at least a portion of the pump unit 20 into the first cavity 401 of the main housing 40, and then sealingly connecting the drive unit 100 and the main housing 40 in which the pump unit 20 is assembled, and in this case, after step S130 of sealingly connecting the drive unit 100 and the fluid unit 200, the method further includes assembling at least a portion of the valve unit 30 into the corresponding second cavity 402 of the main housing 40, and connecting the valve unit 30 and the main housing 40 to limit their position. The main housing 40 further includes a bottom cap, and after assembling at least a portion of the valve unit 30 into the corresponding cavity of the main housing 40, the bottom cap and the cavity housing of the main housing 40 are sealed and connected, for example, by a welding process, thereby realizing a position-limited connection between the valve unit 30 and the main housing 40 and sealing the second mounting port K2.

[0133] As described above, according to the manufacturing method of the fluid control device provided by the present invention, at least two driving members 13 are integrated into one driving unit, and a separate driving device is arranged for each fluid subunit LK. In contrast, the fluid control device 1 provided by the present invention reduces the space occupied by the driving unit 100 and improves the degree of integration of the driving unit 100. Furthermore, at least two fluid subunits LK may be integrated into one main housing 40, thereby improving the integration degree of the fluid control device 1 and reducing the space occupied by the fluid control device 1. Furthermore, by providing the position limiting unit 50, it is possible to limit the axial position of the positioning shaft 222, and furthermore, it effectively exerts the effect of limiting the axial position of the rotor unit 22 and other structures. Regarding the structure of a fluid control device manufactured by the above-mentioned manufacturing method for a fluid control device, it is sufficient to refer to Figs. 1 to 44, and no detailed description will be given.

[0134] Here, the above embodiments are not limiting the present invention, but are intended to explain the present invention, for example, directional definitions such as "front", "back", "left", "right", "upper", and "lower", which may be amended, combined, or equivalently replaced in this specification, and any improvements that do not deviate from the spirit and scope of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A fluid control device, comprising: The fluid control device includes a drive unit and a fluid unit connected to each other, The fluidic unit includes at least two fluidic subunits, The drive unit includes a first housing and a drive member. The drive member is disposed in engagement with a corresponding one of the fluid subunits; The first housing includes a bottom wall portion and a position limiting portion that are connected to each other. At least a portion of the position limiting portion protrudes from the bottom wall portion, At least one of the driving members includes a stator unit, and the driving member including the stator unit is defined as a first driving member; At least a portion of the first drive member is connected to be positionally restricted within the position restricting portion; At least one other of the drive members is connected to the first housing so as to be positionally restricted; At least one of the fluidic subunits includes a pump unit; The pump unit includes a rotor unit. A fluid control system, comprising: a rotor unit including a magnetic unit positioned within a magnetic field range of a corresponding stator unit in an operational state.

2. At least a portion of the position limiting portion extends from the bottom wall portion in a direction approaching the fluid subunit, the stator unit and the position limiting portion are fixed to each other by injection molding, or the first housing and the stator unit are separate structures, the position limiting portion includes a mounting cavity; The fluid control device according to claim 1 , wherein at least a portion of the stator unit is located in the mounting cavity.

3. The pump unit further includes an isolation sleeve. a portion of the isolation sleeve is positioned between the stator unit and the corresponding rotor unit; The isolation sleeve and the first housing are injection molded and fixed together, or the isolation sleeve and the first housing are disposed as separate bodies and hermetically connected together; The isolation sleeve and the stator unit are injection molded and fixed together, or the isolation sleeve and the stator unit are disposed separately, and 3. The fluid control device according to claim 1, wherein at least a portion of the stator unit is located between the isolation sleeve and the first housing.

4. At least two of the fluidic subunits each include a pump unit; At least two of the drive members each include a stator unit, one of the pump units being defined as a first pump unit and the other pump unit being defined as a second pump unit, one of the stator units being defined as a first stator unit and the other stator unit being defined as a second stator unit, The position limiting unit includes a first position limiting unit and a second position limiting unit, At least a portion of the first stator unit is connected to be positionally restricted within the first position restricting portion, At least a portion of the second stator unit is connected to be positionally restricted within the second position restricting portion, the first pump unit includes a first rotor unit; the second pump unit includes a second rotor unit; a portion of the first rotor unit is located inside the first stator unit; The fluid control device according to claim 3 , wherein a portion of the second rotor unit is located inside the second stator unit.

5. At least one of the fluidic subunits includes the pump unit; At least one of the fluidic subunits includes a valve unit; At least one of the drive members includes the stator unit; At least one other of the drive members includes a motor; The first housing further includes a mounting portion. The mounting portion and the position limiting portion are disposed at an interval, The motor is connected to the mounting portion so as to be positionally restricted; 4. The fluid control device according to claim 3, wherein the valve unit includes a valve body connected to an output shaft of the motor so as to transmit power thereto.

6. The drive unit includes a first receiving cavity. The bottom wall forms a part of a wall of the first receiving cavity; The fluid control device further includes a main housing; At least a portion of the main housing is located on a side of the first housing that is away from the first accommodating cavity, the main housing includes a first cavity, a second cavity, a first passage, and a second passage; The first cavity and the second cavity are spaced apart, The first hole and the second hole both communicate with the first cavity, At least a portion of one of the pump units is located in the first cavity, The fluid control device according to claim 5 , wherein at least a portion of the valve body is located in the second cavity.

7. The main housing further includes a communication passage and a plurality of flow paths. The plurality of flow paths are distributed on an outer circumferential side of the second cavity, One of the flow paths communicates with one of the first hole path and the second hole path via one of the communication passages, The valve body includes a communication cavity that communicates at least two of the flow paths, the main housing includes a cavity housing forming at least a portion of the walls of the first cavity and the second cavity; the first cavity includes a first mounting port; the second cavity includes a second mounting port; the first mounting opening is located on a first side of the cavity housing; the second mounting opening is located on a second side of the cavity housing; The fluid control device according to claim 6 , wherein the first side portion and the second side portion are located on opposite sides in a height direction of the cavity housing.

8. The fluid control device according to claim 7, wherein the isolation sleeve and the main housing are either injection molded and fixed together, or disposed as separate bodies and hermetically connected.

9. The drive unit includes a first receiving cavity. The fluid control device further includes a control member and a connection terminal, the control member is located in the first receiving cavity; At least a portion of the connection terminal is located outside the first accommodating cavity, The connection terminal is electrically connected to the control member, The fluid control device according to any one of claims 1, 2, and 4 to 8, wherein at least two of the drive members are both electrically connected to the control member.

10. The first drive member further includes a pump housing and a transition terminal whose position is restricted by the pump housing. the pump housing is sealingly connected to the first housing; At least a portion of the stator unit is located in a cavity of the pump housing, the stator unit includes a coil winding electrically connected to a connection pin at the transition terminal; a portion of the transition terminal passes through the bottom wall and is positioned in the first receiving cavity; The fluid control device of claim 9 , wherein the transition terminal is electrically connected to the control member.

11. A method for manufacturing a fluid control device, comprising: forming a drive unit, This step includes providing a first housing and at least two drive members, the first housing includes a bottom wall portion and a position limiting portion, the first housing comprises a first receiving cavity, the bottom wall portion forms a part of a wall of the first receiving cavity, at least a part of the position limiting portion protrudes from the bottom wall portion, and at least one of the drive members includes a stator unit; and connecting at least a part of the stator unit to be positionally limited within the position limiting portion; providing at least two fluidic subunits, at least one of said fluidic subunits including a pump unit, said pump unit including a rotor unit; and engaging the drive unit and the pump unit so that a magnetic unit of the rotor unit is located within a magnetic field range of the corresponding stator unit in an operating state.

12. The step of connecting at least a portion of the stator unit to the position limiting portion so as to limit the position of the stator unit includes: The method for manufacturing a fluid control device according to claim 11, further comprising the steps of: fixing the stator unit and the position limiting portion by injection molding in an injection molding process; or mounting at least a portion of the stator unit in an attachment cavity of the position limiting portion so as to limit its position.

13. The method for manufacturing the fluid control device includes: Forming at least a portion of a fluidic unit, comprising: The steps include providing a main housing having a first cavity and assembling the pump unit to the main housing such that at least a portion of the pump unit is located in the first cavity; The method for manufacturing a fluid control device according to claim 11, further comprising the step of sealingly connecting the driving unit and the fluid unit.

14. At least one of the fluid subunits includes a valve unit, the valve unit including a valve body and a valve body shaft, the at least one driving member includes a motor, and the main housing further includes a second cavity spaced apart from the first cavity; The step of forming at least a part of a fluidic unit comprises: assembling the valve body and a valve body shaft in the second cavity, wherein at least a portion of the valve body shaft is connected to an output shaft of the motor through the second cavity; The method for manufacturing a fluid control device according to claim 13, further comprising: sealingly connecting a bottom cover and the main housing to form the fluid unit.

15. A drive unit comprising: The drive unit includes a first housing and a drive member. The first housing includes a bottom wall portion and a position limiting portion that are connected to each other. At least a portion of the position limiting portion protrudes from the bottom wall portion, At least one of the drive members includes a stator unit; The driving member including the stator unit is defined as a first driving member, At least a portion of the first drive member is connected to be positionally restricted within the position restricting portion; A drive unit, wherein at least one of the drive members is connected to a first housing so as to be positionally restricted.

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