A fluid control device and a vehicle thermal management system having the same

Abstract

This application discloses at least one fluid control device. The valve unit includes a first valve mechanism, a second valve mechanism, and a first throttling mechanism. The block unit includes a mounting hole portion, which includes a first mounting hole, a second mounting hole, and a third mounting hole. At least a portion of the first valve mechanism is located in the first mounting hole, at least a portion of the second valve mechanism is located in the second mounting hole, and at least a portion of the first throttling mechanism is located in the third mounting hole. The block unit includes an inlet channel, a first channel, a second channel, a third channel, a fourth channel, and an outlet channel. The first valve mechanism enables one of the first and second channels to communicate with the inlet channel, and the second valve mechanism enables one of the third and fourth channels to communicate with the outlet channel. The block unit also includes a fifth channel and a sixth channel. The first throttling mechanism enables the fifth channel to communicate with the sixth channel, reducing the need for pipe connections. This invention also discloses a vehicle thermal management system using the above-described fluid control device.

Description

Technical Field

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

[0002] In a thermal management system, multiple valves are required to achieve different operating modes of the system. Taking a vehicle thermal management system as an example, the thermal management system includes multiple valves and throttling mechanisms. The connection between these valves and throttling mechanisms requires multiple pipelines, and the pipeline connection of the system is relatively complex and inconvenient to assemble. Summary of the Invention

[0003] The purpose of this application is to provide a fluid control device that can reduce pipeline connections.

[0004] This application provides a fluid control device, including a valve unit and a block unit. The valve unit includes a first valve mechanism, a second valve mechanism, and a first throttling mechanism. The block unit includes a mounting hole portion, which includes a first mounting hole, a second mounting hole, and a third mounting hole. At least a portion of the first valve mechanism is located in the first mounting hole, at least a portion of the second valve mechanism is located in the second mounting hole, and at least a portion of the first throttling mechanism is located in the third mounting hole. The block unit includes an inlet channel, a first channel, a second channel, a third channel, a fourth channel, and an outlet channel. The first valve mechanism enables one of the first channel and the second channel to communicate with the inlet channel, and the second valve mechanism enables one of the third channel and the fourth channel to communicate with the outlet channel. The block unit also includes a fifth channel and a sixth channel. The first throttling mechanism enables the fifth channel to communicate with the sixth channel, thereby reducing the number of pipeline connections.

[0005] This application also provides a vehicle thermal management system that can reduce the number of pipe connections in the system, including a compressor, a first heat exchanger, an intermediate heat exchanger, a second heat exchanger, a battery cooler, a gas cooler, and a fluid control device of this application. The first interface of the fluid control device is connected to the outlet of the compressor, the third interface of the fluid control device is connected to the inlet of the intermediate heat exchanger, and the second interface of the fluid control device is connected to the first heat exchanger. The second interface of the fluid control device serves as an outlet in the first, third, and fourth operating modes of the fluid control device, and as an inlet in the second operating mode. The fourth interface of the fluid control device... The first working mode serves as the inlet, and the second working mode serves as the outlet of the fluid control device; the fifth interface of the fluid control device serves as the inlet in the first working mode, and as the outlet in the second, third, and fourth working modes; the sixth interface of the fluid control device serves as the outlet in the first working mode, and as the inlet in the second working mode; the seventh interface of the fluid control device serves as the outlet in the second and fourth working modes; the eighth interface of the fluid control device serves as the inlet in the second and fourth working modes; and the ninth interface of the fluid control device serves as the outlet in the second and fourth working modes.

[0006] The vehicle thermal management system of this application can realize multiple working modes and can reduce the number of system piping connections. Attached Figure Description

[0007] Figure 1 This is a three-dimensional structural schematic diagram of a first embodiment of the fluid control device of this application;

[0008] Figure 2 An exploded view of one embodiment of the fluid control device of this application;

[0009] Figure 3 This is another exploded view of Embodiment 1 of the fluid control device of this application;

[0010] Figure 4 for Figure 1 A top-view structural diagram of a medium-sized block unit;

[0011] Figure 4a for Figure 4 Schematic diagram of the cross-sectional structure in the DD direction;

[0012] Figure 4b for Figure 4 Schematic diagram of the cross-sectional structure in the EE direction;

[0013] Figure 5As shown Figure 1 A schematic diagram of the front view structure of a medium-sized block unit;

[0014] Figure 5a As shown Figure 5 A schematic diagram of the cross-sectional structure along the AA direction of the medium block unit;

[0015] Figure 5b As shown Figure 5 A schematic diagram of the cross-sectional structure of the medium block element in the CC direction;

[0016] Figure 5c As shown Figure 5 A schematic diagram of the cross-sectional structure of the medium block element in the DD direction;

[0017] Figure 5d As shown Figure 5 A schematic diagram of the cross-sectional structure of the medium block element along the EE direction;

[0018] Figure 6 As shown Figure 1 A three-dimensional structural diagram of each mounting hole and flow channel within the middle block unit from one perspective.

[0019] Figure 7 As shown Figure 6 A top view of the mounting holes and flow channels within the middle block unit;

[0020] Figure 8 As shown Figure 6 A bottom view of the mounting holes and flow channels within the middle block unit;

[0021] Figure 9 As shown Figure 1 A three-dimensional structural diagram of each mounting hole and flow channel within the middle block unit from a second perspective;

[0022] Figure 10 The diagram shown is a schematic of the fluid flow direction of the vehicle thermal management system in cooling mode according to this application.

[0023] Figure 11 The diagram shown is a schematic of the fluid flow direction of the vehicle thermal management system in heating mode according to this application.

[0024] Figure 12 The diagram shows a three-dimensional structural schematic of the positioning frame tooling structure used for positioning each drive unit before injection molding.

[0025] Figure 13 The diagram shown is a three-dimensional structural schematic of each drive unit after it is assembled with the positioning frame.

[0026] Figure 14 The diagram shows a three-dimensional structure of each drive unit after injection molding and forming the housing during the injection molding process.

[0027] Figure 15 This is a three-dimensional structural schematic diagram of a second embodiment of the fluid control device of this application.

[0028] Figure 16 for Figure 15 A three-dimensional structural diagram of the fluid control device from another perspective;

[0029] Figure 17 for Figure 15 A schematic diagram of the exploded structure of a fluid control device;

[0030] Figure 18 for Figure 17 A schematic diagram of the exploded structure of the fluid control device from another perspective;

[0031] Figure 19 for Figure 15 A perspective structural diagram of a block unit in a diagram;

[0032] Figure 20 for Figure 15 A structural schematic diagram of the medium-level liquid heat exchange mode module from one perspective;

[0033] Figure 21 for Figure 20 A schematic diagram of the cross-sectional structure along FF. Detailed Implementation

[0034] The following description, in conjunction with the accompanying drawings, illustrates a specific implementation scheme of this application. In this document, "throttling" refers to adjusting the flow rate (including adjusting it to zero).

[0035] The block unit includes mounting holes for installing valves or other units. The valves or other units are fixedly connected or limited to the block unit. Fixed connections include welding, adhesive bonding, threaded connections, etc., while limited connections include snap-fitting, insertion, etc.

[0036] Specifically, such as Figure 1 and 2 As shown, the block unit includes a block 1, which can be a casting or a forging. The mounting hole portion includes a first mounting hole 11, a second mounting hole 12, a third mounting hole 13, a fourth mounting hole 14, a fifth mounting hole 15, and a sixth mounting hole 16.

[0037] like Figure 2 and Figure 3As shown, the valve unit includes a first valve mechanism 21, a second valve mechanism 22, a third valve mechanism 26, a first throttling mechanism 23, a second throttling mechanism 24, and a third throttling mechanism 25. The first mounting hole 11, the second mounting hole 12, the third mounting hole 13, the fourth mounting hole 14, the fifth mounting hole 15, and the sixth mounting hole 16 all have openings in the block 1, each opening for the insertion of the corresponding valve mechanism and throttling mechanism. At least a portion of the first valve mechanism 21 is located in the first mounting hole 11, at least a portion of the second valve mechanism 22 is located in the second mounting hole 12, at least a portion of the third valve mechanism 26 is located in the sixth mounting hole 16, at least a portion of the first throttling mechanism 23 is located in the third mounting hole 13, at least a portion of the second throttling mechanism 24 is located in the fourth mounting hole 14, and at least a portion of the third throttling mechanism 25 is located in the sixth mounting hole 16. Each opening of the first mounting hole 11, the second mounting hole 12, the third mounting hole 13, the fourth mounting hole 14, the fifth mounting hole 15, and the sixth mounting hole 16 faces the drive unit described below; that is, the orientation of each opening is consistent.

[0038] like Figure 3 As shown in this embodiment, as a specific example, the block 1 is generally rectangular. The openings of the first mounting hole 11, the second mounting hole 12, the third mounting hole 13, the fourth mounting hole 14, the fifth mounting hole 15, and the sixth mounting hole 16 are all located on the side of the block 1 facing the drive unit. This is beneficial for improving the space utilization of the block 1, making the positions of the valve mechanisms and throttling mechanisms in the valve unit compact, thereby reducing the space occupied by the fluid control device and reducing the weight of the overall fluid control device.

[0039] Of course, block 1 is not limited to the cuboid structure shown in the figure. Furthermore, in the embodiments given in this text, block 1 is a single-piece structure (integral in this text means not assembled by welding, bonding, or other splicing methods), which can minimize leakage points in the fluid control device. However, this does not preclude block 1 from being composed of two or more parts joined together by welding or other methods, such as two cubes, two cuboids, or one cube combined with one cuboid, or composed of two or more regular or irregular parts. All of these should fall within the scope of the block in this application, because compared to designs with multiple pipe connections, this still reduces leakage in the entire fluid control device.

[0040] like Figure 2 and Figure 3As shown, in order to make the overall structure of the fluid control device as compact as possible and reduce the space occupied, in this embodiment, the valve mechanisms and throttling mechanisms in the valve unit are arranged in two rows on the block 1. The second valve mechanism 22, the second throttling mechanism 24 and the third valve mechanism 26 are located in one row, with the second throttling mechanism 24 located between the second valve mechanism 22 and the third valve mechanism 26. The first valve mechanism 21, the third throttling mechanism 25 and the first throttling mechanism 23 are located in the other row, with the third throttling mechanism 25 located between the first valve mechanism 21 and the first throttling mechanism 23. Accordingly, the second mounting hole 12, the fourth mounting hole 14, and the third mounting hole 13 are arranged in a first column on the block 1. The central axes of each hole of the second mounting hole 12, the fourth mounting hole 14, and the third mounting hole 13 are located on the same plane, which is defined here as the first surface. The first mounting hole 11, the fifth mounting hole 15, and the third mounting hole 13 are arranged in a second column on the block 1. The central axes of the first mounting hole 11, the fifth mounting hole 15, and the third mounting hole 13 are located on the same plane, which is defined here as the second surface. The first column and the second column are arranged in parallel, that is, the first surface and the second surface are arranged in parallel, so that the installation positions of each valve mechanism and each throttling mechanism are adapted to each mounting hole. In this embodiment, after each valve mechanism and each throttling mechanism are inserted into the block 1, they are fixedly connected or limited to the block 1 to further reduce the internal leakage of the fluid control device. The connection methods include welding, bonding, or threading.

[0041] like Figures 1-3 As shown, the drive unit includes a housing 31, a drive section that cooperates with each valve mechanism and each throttling mechanism in the valve unit, a circuit board 33, and a cover 34. The housing 31 is welded and fixed to the block 1. The drive section is located inside the housing 31. The circuit board 33 is electrically connected and / or signal connected to the wiring terminals of the drive unit. The wiring terminals are used to input electrical signals supplied to the fluid control device and / or control signals from the host computer and / or control signals fed back to the host computer. The circuit board 33 can be a rigid circuit board, such as a paper-based copper-clad laminate or a metal-based copper-clad laminate. The circuit board 33 can also be a flexible circuit board, such as a highly reliable and flexible printed circuit board made of polyimide or polyester film as a substrate. Figure 2 and Figure 3In the exploded view, to clearly illustrate the structure of each drive unit, the drive units are separated from the housing. In the actual product, the drive units and housing are injection molded together. Drive unit 32 includes a first drive unit 321, a second drive unit 322, a third drive unit 323, a fourth drive unit 342, a fifth drive unit 325, and a sixth drive unit 326. The first drive unit 321 drives the first valve mechanism 21, the second drive unit 322 drives the second valve mechanism 22, the third drive unit 323 drives the third valve mechanism 26, the fourth drive unit 324 drives the second throttling mechanism 24, the fifth drive unit 325 drives the first throttling mechanism 23, and the sixth drive unit 326 drives the third throttling mechanism 25. Each drive unit is at least partially located within the housing 31, and each drive unit is injection molded to the housing 31; that is, the housing 31 is injection molded out during the injection molding connection process of each drive unit. Furthermore, the wiring terminals are also injection molded and fixed together with each wiring unit, simplifying the assembly process, ensuring reliable connection, and providing relatively good sealing.

[0042] Of course, the housing 31 may not be injection molded with each drive unit. In this case, the housing 31 is an independent entity that is not fixed to each drive unit. The drive units can be fixed by injection molding or not. The advantage of fixing the drive units by injection molding is that the drive units 32 are connected as a whole. When connecting with the valve unit, the assembly of the drive unit and the valve unit does not need to be done multiple times, resulting in high assembly efficiency. After each drive unit is electrically connected to the circuit board 31, the drive unit is confined within the housing 31 by the cooperation of the cover 34 and the housing 31. The housing 31 can be welded or glued to the block 1, and the housing 31 can be welded or glued to the cover 34. When the host computer sends a control signal, the circuit board 33 can convert the control signal into a drive signal to drive the aforementioned drive units or parts of the drive units to operate. When the host computer sends a system signal, the circuit board 33 sends a control signal according to the system signal and converts it into a drive signal to drive the aforementioned drive units or parts of the drive units to operate. In the above embodiment, the drive unit includes 6 drive units, which are electrically connected to a terminal block via a circuit board 33. The system only needs to be connected to one set of wiring harnesses, which reduces the number of wiring harnesses and makes the structure of the fluid control device more compact, while also saving material costs.

[0043] During assembly, each drive unit can be simultaneously assembled with the corresponding valve mechanism or throttling mechanism, such that the first drive unit 321 is fitted onto the outer periphery of the first valve mechanism 21, the second drive unit 322 is fitted onto the outer periphery of the second valve mechanism 22, the third drive unit 323 is fitted onto the outer periphery of the third valve mechanism 26, the fourth drive unit 324 is fitted onto the outer periphery of the second throttling mechanism 24, the fifth drive unit 325 is fitted onto the outer periphery of the first throttling mechanism 23, and the sixth drive unit 326 is fitted onto the outer periphery of the third valve mechanism 26. The circuit board 33 is located on the upper side of each drive unit 32. The circuit board 33 is provided with through holes 331 corresponding to the total number of valve mechanisms and throttling mechanisms in the valve unit. Each through hole 331 is fitted onto the outer periphery of each valve mechanism and each throttling mechanism, that is, each valve mechanism and each throttling mechanism passes through the corresponding through hole. Each drive unit is electrically connected to the circuit board 33 through its pins. Figure 2 Only a outline of circuit board 33 is shown; the circuit layout on it can have various designs. When circuit board 33 has through-holes 331, the fluid control device can be positioned longitudinally (i.e., Figure 1 When the position is shown, the vertical dimension of the fluid control device is reduced, making the structure of the fluid control device more compact. Of course, the circuit board 33 may also not have the aforementioned through hole 331.

[0044] Circuit board 33 may include a first control unit, a second control unit, a third control unit, a fourth control unit, a fifth control unit, a sixth control unit, a first drive unit, a second drive unit, a third drive unit, a fourth drive unit, a fifth drive unit, and a sixth drive unit. The first control unit sends a first control signal to the first drive unit, which controls the drive signal passing through the first drive section 321 to change according to a preset rule. The second control unit sends a second control signal to the second drive unit, which controls the drive signal passing through the second drive section 322 to change according to a preset rule. The third control unit sends a third control signal to the third drive unit, which controls the drive signal passing through the third drive section 323 to change according to a preset rule. The fourth control unit sends a first control signal to the fourth drive unit, which controls the drive signal passing through the fourth drive section 324 to change according to a preset rule. The fifth control unit sends a fifth control signal to the fifth drive unit, which controls the drive signal passing through the fifth drive section 325 to change according to a preset rule. The sixth control unit sends a sixth control signal to the sixth drive unit, which controls the drive signal passing through the sixth drive section 326 to change according to a preset rule.

[0045] In another embodiment, circuit board 33 may also include a control unit, a first drive unit, a second drive unit, a third drive unit, a fourth drive unit, a fifth drive unit, and a sixth drive unit. The control unit is connected to each drive unit. The control unit sends a first control signal to the first drive unit, and the first drive unit controls the drive signal through the first drive section 321 to change according to a set rule. The control unit sends a second control signal to the second drive unit, and the second drive unit controls the drive signal through the second drive section 322 to change according to a set rule. The control unit sends a third control signal to the third drive unit, and the third drive unit controls the drive signal through the third drive section 323 to change according to a set rule. The control unit sends a fourth control signal to the fourth drive unit, and the fourth drive unit controls the drive signal through the fourth drive section 324 to change according to a set rule. The fifth drive unit controls the drive signal through the fifth drive section 325 to change according to a set rule. The sixth drive unit controls the drive signal through the sixth drive section 326 to change according to a set rule. The control unit selectively controls the drive units through software control, making the structure of the fluid control device compact and reducing the number of sealing points.

[0046] The fluid control device of this application, after the valve unit is connected to the block unit, can realize different working modes in the system through the cooperation of each valve mechanism and each throttling mechanism in valve unit 2. The connection / cooperation relationship between the flow channel of the block unit and the valve unit is described in detail below.

[0047] like Figure 2 and Figures 4a-4b , Figure 5 , Figure 5a , Figure 5b , Figure 5c , Figure 5dAs shown, block 1 includes a first interface 101, a second interface 102, a third interface 103, a fourth interface 104, a fifth interface 105, a sixth interface 106, and a seventh interface 107. The first interface 101, second interface 102, and third interface 103 are located on the same side of block 1, defined as the first sidewall portion of block 1; that is, the openings of the first interface 101, second interface 102, and third interface 103 are all located on one sidewall of block 1 and face the same direction. The fifth interface 105, sixth interface 106, seventh interface 107, and ninth interface 109 are located on another side of block 1, defined as the second sidewall portion of block 1; that is, the openings of the fifth interface 105, sixth interface 106, seventh interface 107, and ninth interface 109 are located on the same sidewall of block 1 and face the same direction. The fourth interface 104 and the eighth interface 108 are located on the other side of block 1, opposite to the sidewall where the seventh interface 107 is located, defined as the third sidewall portion of block 1. The third sidewall is arranged parallel to the second sidewall, the second sidewall is arranged perpendicular to the first sidewall, and the third sidewall is arranged perpendicular to the first sidewall. It should be noted that each sidewall can also be located on a pipe or block that is fixedly or partially connected to block 1.

[0048] Of the aforementioned interfaces, some always act as inlets, some always as outlets, and some sometimes act as inlets and sometimes as outlets depending on the different operating modes of the fluid control device.

[0049] The flow channels of block 1 include an inlet flow channel 120, a first flow channel 111, a second flow channel 112, a third flow channel 113, a fourth flow channel 114, a fifth flow channel 115, a sixth flow channel 116, and an outlet flow channel 220. One of the first flow channel 111 and the second flow channel 112 is connected to the inlet flow channel 120, one of the third flow channel 113 and the fourth flow channel 114 is connected to the outlet flow channel 220, and the fifth flow channel 115 is connected to the sixth flow channel 116. The first valve mechanism is a three-way valve, which can be a three-way electric ball valve. Specifically, the first valve mechanism 21 includes a first port A and a second port A1. The first mounting hole 11 is connected to the inlet flow channel 120, and the first interface 101, the inlet flow channel 120, the first flow channel 111, and the second interface 102 are connected in sequence.

[0050] When defining the shape and position of the block shown in the attached figure as a reference, the width direction of block 1 is the transverse direction (direction M in the figure), and the length direction of block 1 is the longitudinal direction (direction N in the figure). The second flow channel 112 is located transversely to block 1, and extends from the seventh interface 107 to the first mounting hole 11 until it communicates with the first mounting hole 11. That is, the first mounting hole 11 includes an opening corresponding to the second flow channel 112. The first flow channel 111 includes a first common channel 110 and a first sub-channel 1111. The first common channel 110 extends longitudinally to block 1, and the first sub-channel 1111 extends transversely to block 1. That is, the first common channel 110 and the first sub-channel 1111 are perpendicular to each other, which facilitates processing and reduces flow resistance.

[0051] The third flow channel 113 includes a first common channel 110 and a second sub-channel 1112. The centerline of the second sub-channel 1112 is coaxially arranged with the centerline of the first sub-channel 1111. Both the first sub-channel 1111 and the second sub-channel 1112 extend laterally along the block 1 and are perpendicular to the first common channel 110.

[0052] The fourth flow channel 114 extends laterally along block 1. The outflow channel 220 extends longitudinally along block 1. The outflow channel 220 is arranged parallel to the inflow channel 120. The fourth interface 104, the fourth flow channel 114, the outflow channel 220, and the third interface 103 are connected. The third flow channel 113, the outflow channel 220, and the second interface 102 are connected.

[0053] The third mounting hole 13 has an opening that communicates with the fifth flow channel 115. The fifth flow channel 115 includes a first main channel 1151 and a first sub-channel 1152. The first main channel 1151 and the first sub-channel 1152 are arranged perpendicularly. Specifically, the first main channel 1151 extends laterally from the fifth interface 105 into the block 1, and the first sub-channel 1152 extends longitudinally from the block 1 into the third mounting hole 13 until it communicates with the third mounting hole 13, which is convenient for processing.

[0054] Block 1 also includes a seventh flow channel 117 and an eighth flow channel 118. The eighth flow channel 118 is connected to the fourth flow channel 114. The seventh flow channel 117 and the eighth flow channel 118 can be connected by adjusting the second throttling mechanism 24.

[0055] The seventh flow channel 117 includes a second main channel 1171 and a first branch channel 1172, with the first branch channel 1172 located near the first throttling mechanism 23. The first branch channel 1172 extends laterally from the eighth interface into the block 1, and extends longitudinally along the block 1 to communicate with the fourth mounting hole 14. The first branch channel 1172 is perpendicular to the second main channel 1171, facilitating processing and reducing flow resistance.

[0056] The eighth flow channel 118 includes a third sub-channel 1181 and a fourth sub-channel 1182. The third sub-channel 1181 extends laterally into the block 1 and is arranged parallel to the second main channel 1171. The fourth sub-channel 1182 extends longitudinally into the block 1 and is located between the third sub-channel 1181 and the fourth flow channel 114. The fourth sub-channel 1182 communicates with the fourth flow channel 114 and the third sub-channel 1181.

[0057] Block 1 also includes a ninth flow channel 119, and the fifth flow channel 115 further includes a second sub-channel 1153. The ninth flow channel 119 extends laterally inward from the ninth interface along the block 1 to communicate with the fifth mounting hole 15. The ninth flow channel 119 is arranged parallel to the fifth flow channel 115. The second sub-channel 1153 communicates with the fifth mounting hole 15, and extends longitudinally along the block 1 towards the fifth mounting hole 15. The central axis of the second sub-channel 1153 is coaxial with the central axis of the first sub-channel 1152.

[0058] Block 1 includes a tenth flow channel 100, which is connected to the first flow channel, i.e., the tenth flow channel 100 is connected to the second interface 102. A seventh flow channel 117 is connected to the tenth flow channel 100. The seventh flow channel 117 includes a second branch channel 1173, the central axis of which is coaxial with the central axis of the first branch channel 1172, and perpendicular to the second main channel 1171. Fluid can enter the seventh flow channel 117 from the eighth interface 108, specifically flowing through the second main channel 1171, the second branch channel 1173, and the third valve mechanism 26, then through the tenth flow channel 100, and finally exiting from the second interface 102 through the first common channel 110.

[0059] As mentioned above, the second mounting hole 12, the fourth mounting hole 14, and the third mounting hole 13 are arranged in a first column on the block 1, and the first mounting hole 11, the fifth mounting hole 15, and the third mounting hole 13 are arranged in a second column on the block 1. The aforementioned tenth flow channel is disposed in the space between the first column and the second column to effectively utilize the space of the block 1, making the flow channel arrangement within the block 1 more compact and reducing the block size.

[0060] Please see Figure 10 and Figure 11One embodiment of this application also provides a vehicle thermal management system, which includes a compressor 30, a first heat exchanger 20, a fluid control device, an intermediate heat exchanger, a second heat exchanger 50, a battery cooler 60, and a gas cooler 40. A first interface 101 is connected to the outlet of the compressor 30, and a third interface 103 is connected to the inlet of the intermediate heat exchanger. The aforementioned fluid control device and vehicle thermal management system effectively reduce the number of pipe connections in the system, minimize leakage points, and achieve a high degree of integration of the device and system.

[0061] The vehicle thermal management system can achieve two cooling modes. In the first operating mode, the first valve mechanism connects the first flow channel to the inlet flow channel, and the second valve mechanism connects the fourth flow channel to the outlet flow channel. In the second operating mode, the first valve mechanism connects the second flow channel to the inlet flow channel, and the second valve mechanism connects the third flow channel to the outlet flow channel. Specifically, in the first cooling mode, the fluid control device can operate in the first mode, and the fluid flow direction of the vehicle thermal management system is as follows: Figure 10 As shown, the flow path of at least a portion of the refrigerant flowing into the fluid control device from the first interface 101 is as follows: first interface 101, inlet flow channel 120, valve first flow channel of the first valve mechanism 21, first flow channel 111, second interface 102, first heat exchanger 20, intermediate heat exchanger, fifth interface 105, fifth flow channel 115, first throttling mechanism 23, sixth flow channel 116, sixth interface 106, second heat exchanger 50, fourth interface 104, fourth flow channel 114, valve third flow channel of the second valve mechanism 22, outlet flow channel 220, third interface 103, intermediate heat exchanger, and then back into the compressor 30 to complete one refrigeration cycle.

[0062] In cooling mode two, the fluid control device can operate in a third mode. In this third mode, the ninth flow channel can be connected to the fifth flow channel by adjusting the third throttling mechanism. Specifically, the flow channel is connected to the first port 101, the inlet flow channel 120, the valve first flow channel of the first valve mechanism 21, the first flow channel 111, the second port 102, the first heat exchanger 20, the intermediate heat exchanger, the fifth port 105, the fifth flow channel 115, the third throttling mechanism 25, the ninth flow channel 119, the ninth port 109, the battery cooler 60, and the intermediate heat exchanger before returning to the compressor 30 to complete one cooling cycle.

[0063] The cooling cycle in Cooling Mode 1 is used to cool the air inside the vehicle, while the cooling cycle in Cooling Mode 2 is used to cool the battery in the vehicle's thermal management system.

[0064] When the system requires heating, the fluid control device can operate in a second mode. In this second mode, the first valve mechanism connects the second flow channel to the inlet flow channel, and the second valve mechanism connects the third flow channel to the outlet flow channel. The fluid flow direction of the vehicle thermal management system is as follows: Figure 11As shown, the flow path of at least a portion of the refrigerant flowing into the block 1 from the first interface 101 is as follows: first interface 101, inlet flow channel 120, valve of the first valve mechanism 21, second flow channel 112, seventh interface 107, gas cooler 40, eighth interface 108, seventh flow channel 117, second throttling mechanism 24, eighth flow channel 118, fourth flow channel 114, fourth interface 104, second heat exchanger 50, sixth interface 106, sixth flow channel 116, first throttling mechanism 23, fifth flow channel 115, fifth interface 105, intermediate heat exchanger, first heat exchanger 20, second interface 102, third flow channel 113, valve of the second valve mechanism 22, fourth flow channel, outlet flow channel 220, intermediate heat exchanger, and then back into the compressor 30 to complete one refrigeration cycle.

[0065] The third valve mechanism 26 is an on / off valve, which can be closed in cooling and heating modes. When the system needs to defrost, the fluid control device activates the fourth operating mode, and the third valve mechanism 26 opens. In defrost mode, at least part of the refrigerant flow path in the vehicle thermal management system is as follows: first interface 101, inlet channel 120, valve second channel of the first valve mechanism 21, second channel 112, seventh interface 107, gas cooler 40, eighth interface 108, seventh channel 117, third valve mechanism 26, intermediate heat exchanger, fifth interface 105, fifth channel 115, third throttling mechanism 25, ninth channel 119, ninth interface 109, battery cooler, intermediate heat exchanger, and then back to the compressor 30 to complete a refrigeration cycle.

[0066] As described above, the second interface 102 serves as an outlet in the first, third, and fourth operating modes of the fluid control device, and as an inlet in the second operating mode. The fourth interface 104 serves as an inlet in the first operating mode of the fluid control device, and as an outlet in the second operating mode. The fifth interface 105 serves as an inlet in the first operating mode of the fluid control device, and as an outlet in the second, third, and fourth operating modes. The sixth interface 106 serves as an outlet in the first operating mode, and as an inlet in the second operating mode. The seventh interface 107 serves as an outlet in the second and fourth operating modes, the eighth interface 108 serves as an inlet in the second and fourth operating modes, and the ninth interface 109 serves as an outlet in the second and fourth operating modes.

[0067] It should be noted that the description of the refrigerant flow path under the various operating modes described above does not mean that the vehicle thermal management system only includes the above components.

[0068] The aforementioned vehicle thermal management system can achieve four different operating modes to meet the system's multi-functional requirements. Furthermore, the application of the fluid control device of this application reduces the overall piping connections, simplifies assembly, and minimizes leakage points.

[0069] The manufacturing method of the above-mentioned fluid control device is as follows:

[0070] A block unit is fabricated, comprising a block 1, which includes a first interface 101, a second interface 102, a third interface 103, a fourth interface 104, a fifth interface 105, a sixth interface 106, a seventh interface 107, an eighth interface 108, and a ninth interface 109. It also includes a first mounting hole 11, a second mounting hole 12, a third mounting hole 13, a fourth mounting hole 14, a fifth mounting hole 15, and a sixth mounting hole 16. The fabricated block unit further includes the aforementioned flow channels. During the fabrication of block 1, several process holes are formed on block 1. After the flow channels are processed, each process hole is sealed.

[0071] A valve unit is fabricated, comprising a first valve mechanism 21, a second valve mechanism 22, a first throttling mechanism 23, a second throttling mechanism 24, a third throttling mechanism 25, and a third valve mechanism 26. The first valve mechanism 21 and the second valve mechanism 22 are three-way valves, which can be three-way ball valves, or more specifically, electrically operated three-way ball valves. Each throttling mechanism can be an expansion valve, wherein the first throttling mechanism 23 is specifically a bidirectional electronic expansion valve.

[0072] A drive unit is fabricated, comprising a first drive unit 321, a second drive unit 322, a third drive unit 323, a fourth drive unit 324, a fifth drive unit 325, a sixth drive unit 326, and a circuit board 33. The circuit board 33 has corresponding through holes 331 at the positions where it is connected to each drive unit, or does not include each through hole 331. The circuit board 33 is a rigid circuit board or a flexible circuit board.

[0073] Assemble the drive unit by fixing each drive component together via injection molding, and integrally form the housing 31 during the injection molding process, so that each drive component is at least partially located within the housing 31. Electrically connect the circuit board 33 to each drive component. To save space and make the fluid control device more compact, the circuit board 33 can also be located within the housing 31. Then, fix and seal the cover 34 to the housing 31 by welding or bonding. At this point, the drive unit is connected as a single unit. The injection molding process of each drive unit is as follows: The positioning frame 90 includes a first positioning part 91, a second positioning part 92, a third positioning part 93, a fourth positioning part 94, a fifth positioning part 95, and a sixth positioning part 96. In this embodiment, each positioning part is cylindrical and adapted to the inner hole shape of each drive unit. Before injection molding, the first drive unit 321 is fitted onto the first positioning part 91, the second drive unit 322 is fitted onto the second positioning part 92, the third drive unit 323 is fitted onto the third positioning part 93, the fourth drive unit 324 is fitted onto the fourth positioning part 94, the fifth drive unit 325 is fitted onto the fifth positioning part 95, and the sixth drive unit 326 is fitted onto the sixth positioning part 96, so that each drive unit is positioned before injection molding. Then, injection molding begins, and each drive unit is injection molded together with rubber or other injection molding materials. During the injection molding process, the aforementioned box 31 is formed through the cooperation of other tooling.

[0074] Assemble the valve unit and the block unit, insert the lower part of each valve mechanism and each throttling mechanism into the corresponding mounting hole of the block 1 and fix and seal it to the block 1.

[0075] After the valve unit and block are assembled, the driving parts of the assembled drive unit are connected to the corresponding valve mechanism or throttling mechanism. After the connection is completed, the housing 31 is welded or glued to the block 1 for sealing and fixation.

[0076] The above-mentioned method for manufacturing fluid control devices results in fewer leakage points and improved sealing performance.

[0077] The fluid control device and vehicle thermal management system of this application can adjust the on / off state or flow rate of the working medium (such as refrigerant) in different operating modes of the system. The fluid control device of this application has a high degree of integration and a compact structure. The valve unit is fixed to the block unit, and the valve mechanism or throttling mechanism is not connected by pipelines. This not only facilitates installation, but also reduces leakage of the fluid control device compared to pipeline connections, as the flow channel is located inside the block unit.

[0078] A fluid control device includes a valve unit and a block unit 10. The valve unit includes a first valve mechanism 21, a second valve mechanism 22, and a first throttling mechanism 23. The block unit 10 includes mounting holes, specifically a first mounting hole 11, a second mounting hole 12, and a third mounting hole 13. At least a portion of the first valve mechanism 21 is located in the first mounting hole 11, at least a portion of the second valve mechanism 22 is located in the second mounting hole 12, and at least a portion of the first throttling mechanism 23 is located in the third mounting hole 13. The block unit 10 includes an inlet flow channel 120, a first flow channel 111, a second flow channel 112, a third flow channel 113, a fourth flow channel 114, and an outlet flow channel 220. The first valve mechanism 21 enables one of the first flow channel 111 and the second flow channel 112 to communicate with the inlet flow channel 120, and the second valve mechanism 22 enables one of the third flow channel 113 and the fourth flow channel 114 to communicate with the outlet flow channel 220. The block unit 10 also includes a fifth flow channel 115 and a sixth flow channel 116, and the first throttling mechanism 23 enables the fifth flow channel 115 to communicate with the sixth flow channel 116. Specifically, the first valve mechanism 21 includes a first valve part 211, a second valve part 212, and a third valve part 213, and the corresponding first mounting hole 11 includes a first sub-hole 1101, a second sub-hole 1102, and a third sub-hole 1103. At least a portion of the first valve part 211 is located in the first sub-hole 1101, and the first valve part 211 is fixedly connected or limitedly connected to the block unit 10. At least a portion of the second valve part 212 is located in the second sub-hole 1102, and the second valve part 212 is fixedly connected or limitedly connected to the block unit 10. At least a portion of the third valve part 213 is located in the third sub-hole 1103, and the third valve part 213 is fixedly connected or limitedly connected to the block unit 10. The fixed connection or limited connection can be achieved by threaded connection, welding, bonding, insertion, or snap-fit. The first valve section 211 enables the inlet flow channel 120 to communicate with the first flow channel 111, and the second valve section 212 enables the inlet flow channel 120 to communicate with the second flow channel 112. The block unit 10 has a seventh flow channel 117, and the third valve section 213 enables the inlet flow channel 120 to communicate with the seventh flow channel 117. Alternatively, when the fluid control device is operating, the first valve section 211 can be either connected to or disconnected from the first flow channel 111, the second valve section 212 can be either connected to or disconnected from the second flow channel 112, and the third valve section 213 can be either connected to or disconnected from the seventh flow channel 117. The first valve mechanism 21 can be a solenoid valve, a ball valve, or other type of on / off valve. In this embodiment, the seventh flow channel 117 has an opening in the wall of the third sub-hole 1103, and the third flow channel 113 also has an opening in the wall of the third sub-hole 1103. The seventh flow channel 117 is connected to the third sub-hole 1103, and the third flow channel 113 is connected to the third sub-hole 1103. The seventh flow channel 117 is connected to the third flow channel 113 through the third sub-hole 1103.The second flow channel 112 has an opening in the wall of the second sub-hole 1102, and the second flow channel 112 communicates with the second sub-hole 1102. The fourth flow channel 114 also has an opening in the wall of the second sub-hole 1102, and the fourth flow channel 114 communicates with the second sub-hole 1102. The second flow channel 112 communicates with the fourth flow channel 114 through the second sub-hole 1102. When the fluid control device is working, the inlet flow channel 120 of the fluid control device can communicate with the outlet of the compressor. The first valve mechanism 21 enables the inlet flow channel 120 to communicate with at least one of the second flow channel 112, the first flow channel 111, and the seventh flow channel 117. The first valve mechanism 21 can be used to select the connection between the compressor outlet and a heat exchanger in the thermal management system.

[0079] The second valve mechanism 22 enables at least one of the fourth flow channel 114 and the third flow channel 113 to communicate with the outflow channel 220. Specifically, the second valve mechanism 22 includes a fourth valve part 221 and a fifth valve part 222. The corresponding second mounting hole 12 includes a fourth sub-hole 1211 and a fifth sub-hole 1212. At least a portion of the fourth valve part 221 is located in the fourth sub-hole 1211, and at least a portion of the fifth valve part 222 is located in the fifth sub-hole 1212. The fourth valve part 221 is fixedly connected to or limited by the block unit 10, and the fifth valve part 222 is fixedly connected to or limited by the block unit 10. The fixed connection or limited connection can be achieved by threaded connection, welding, bonding, insertion or snap-fit, etc. The fourth valve 221 can connect the third flow channel 113 to the outflow channel 220. Since the seventh flow channel 117 is connected to the third flow channel 113, the seventh flow channel 117 can be connected to the outflow channel 220 through the fourth valve 221. The fifth valve 222 can connect the fourth flow channel 114 to the outflow channel 220. Since the second flow channel 112 is connected to the fourth flow channel 114, the second flow channel 112 can be connected to the outflow channel 220 through the fifth valve 222. Or, to put it another way, when the fluid control device is working, the fourth valve 221 can connect or disconnect the seventh flow channel 117 from the outflow channel 220, and the fifth valve 222 can connect or disconnect the fourth flow channel 114 from the outflow channel 220.

[0080] The first throttling mechanism 23 enables the fifth flow channel 115 to connect with the sixth flow channel 116. In this embodiment, the sixth flow channel 116 includes a first sub-flow channel 1161 and a second sub-flow channel 1162. The fifth flow channel 115 can connect with the first sub-flow channel 1161 and the second sub-flow channel 1162 through the first throttling mechanism 23. The block unit 10 has an eighth flow channel 118, which is connected to the outflow channel 220.

[0081] The fluid control device includes a liquid storage heat exchange module 27, which has a liquid storage chamber 2703, a first heat exchange channel 2701, and a second heat exchange channel 2702. The fluid in the first heat exchange channel 2701 can exchange heat with the fluid in the second heat exchange channel 2702, and the first heat exchange channel 2701 is connected to the liquid storage chamber 2703. The liquid storage heat exchange module 27 has a first connection port 2704 and a second connection port 2705. The first connection port 2704 is connected to the liquid storage chamber 2703, and the second connection port 2705 is connected through the second heat exchange channel 2702. The liquid storage heat exchange module 27 includes a tank 273, a first connecting part 271, and a second connecting part 272. The tank 273 is fixedly connected to or limited by the first connecting part 271, and the tank 273 is fixedly connected to or limited by the second connecting part 272. A first connecting port 2704 and a second connecting port 2705 are located in the first connecting part 271. At least a portion of the first heat exchange channel 2701, at least a portion of the second heat exchange channel 2702, and at least a portion of the liquid storage chamber 2703 are located inside the tank 273. The block unit 10 includes a first mating part. The first connecting part 271 and the first mating part are sealed together. A fifth flow channel 115 has an opening in the first mating part and is disposed opposite to at least a portion of the first connecting port 2704, thus communicating with the first connecting port 2704 and the fifth flow channel 115. An outflow channel 220 has an opening in the first mating part and is disposed opposite to at least a portion of the second connecting port 2705, and the second connecting port 2705 communicates with the outflow channel 220. When the fluid control device is working, the first heat exchange channel 2701 is a high-pressure channel, and the second heat exchange channel 2702 is a low-pressure channel. The fluid in the first heat exchange channel 2701 undergoes gas-liquid separation in the storage chamber 2703. The relatively liquid fluid enters the fifth flow channel 115 through the first connection port 2704, and after being throttled and depressurized by the first throttling mechanism 23, it flows out of the fluid control device through the sixth flow channel 116. The fluid that has absorbed heat after evaporation in the evaporator can enter the second heat exchange channel 2702 through the eighth flow channel 118, the seventh flow channel 117, or the outflow channel 220, and then through the second connection port 2705.

[0082] The fluid control device has a first interface 101, a second interface 102, a third interface 103, a fourth interface 104, a fifth interface 105, a sixth interface 106, a seventh interface 107, an eighth interface 108, and a ninth interface 109. The first interface 101 is connected to the inlet flow channel 120; the second interface 102 is connected to the first flow channel 111; the third interface 103 is connected to the second flow channel 112; the fourth interface 104 is connected to the eighth flow channel 118; the fifth interface 105 is connected to the first sub-flow channel 1161; the eighth interface 108 is connected to the second sub-flow channel 1162; and the ninth interface 109 is connected to the seventh flow channel 117. The sixth interface 106 is located at the second connecting portion 272 and is connected to the first heat exchange channel 2701; and the seventh interface 107 is located at the second connecting portion 272 and is connected to the second heat exchange channel 2702. In this embodiment, the block unit 10 is rectangular, but it can also be other shapes. To facilitate the description of the structural positional relationships of the fluid control device, a first surface is defined, which is perpendicular to the axial direction of the tank 273. A first direction and a second direction are defined on the first surface, which are perpendicular to the second direction. Along the axial direction of the tank 273, at least a portion of the liquid storage heat exchange module 27 is located on one side of the block unit, and at least a portion of the first valve mechanism 21, at least a portion of the second valve mechanism 22, and at least a portion of the first throttling mechanism 23 are located on the opposite side of the block unit 10. This makes the structure of the fluid management device relatively compact, which is beneficial for miniaturization. In a more specific embodiment, the inlet channel 120 includes a first sub-segment 1201 and a second sub-segment 1202, wherein the first sub-segment 1201 extends along a first direction, and the second sub-segment 1202 extends along a second direction. The projections of the first sub-segment 1201 and the second sub-segment 1202 on the first surface are relative to the first sub-hole 1101. Along the first direction, the second sub-hole 1102 is closer to the first sub-hole 1101 than the first interface 101. The extension direction of the second flow channel 112 is consistent with the extension direction of the fourth flow channel 114. Along the axial direction of the tank body 273, the second flow channel 112, the first flow channel 111, and the seventh flow channel 117 are farther away from the tank body 273 than the inlet flow channel 120, and the third flow channel 113 is farther away from the tank body 273 than the eighth flow channel 118 and the outlet flow channel 220. Along the first direction, the first interface 101 and the eighth interface face the same direction and face the opposite direction to the second interface 102 and the ninth interface. Along the second direction, the fourth interface 104 and the fifth interface 105 face the same direction and face the opposite direction to the third interface 103. This facilitates the connection of the fluid control device with other components in the system.

[0083] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Those skilled in the art should understand that they can still modify, combine or make equivalent substitutions to the present invention, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of this invention.

Claims

1. A fluid control device, comprising a valve unit and a block unit, wherein the valve unit includes a first valve mechanism, a second valve mechanism, and a first throttling mechanism, and the block unit includes a mounting hole portion, wherein the mounting hole portion includes a first mounting hole, a second mounting hole, and a third mounting hole, wherein at least a portion of the first valve mechanism is located in the first mounting hole, at least a portion of the second valve mechanism is located in the second mounting hole, and at least a portion of the first throttling mechanism is located in the third mounting hole; The block unit includes an inlet channel, a first channel, a second channel, a third channel, a fourth channel, and an outlet channel. The first valve mechanism enables one of the first channel and the second channel to communicate with the inlet channel, and the second valve mechanism enables one of the third channel and the fourth channel to communicate with the outlet channel. The block unit further includes a fifth flow channel and a sixth flow channel, and the first throttling mechanism enables the fifth flow channel to communicate with the sixth flow channel; The valve unit includes a second throttling mechanism, the block unit includes a fourth mounting hole, at least a portion of the second throttling mechanism is located in the fourth mounting hole, the block unit includes a seventh flow channel and an eighth flow channel, the eighth flow channel is connected to the fourth flow channel, and the seventh flow channel can be connected to the eighth flow channel by adjusting the second throttling mechanism.

2. The fluid control device according to claim 1, characterized in that, The fluid control device includes a first operating mode and a second operating mode. In the first operating mode, the first valve mechanism connects the first flow channel to the inlet flow channel, and the second valve mechanism connects the fourth flow channel to the outlet flow channel. In the second operating mode, the first valve mechanism connects the second flow channel to the inlet flow channel, and the second valve mechanism connects the third flow channel to the outlet flow channel.

3. The fluid control device according to claim 2, characterized in that, The first throttling mechanism is a bidirectional throttling mechanism. In the first operating mode of the fluid control device, the fluid can enter from the fifth flow channel, be throttled by the first throttling mechanism, and then flow out from the sixth flow channel. In the second operating mode of the fluid control device, the fluid can enter from the sixth flow channel, be throttled by the first throttling mechanism, and then flow out from the fifth flow channel.

4. The fluid control device according to any one of claims 2-3, characterized in that... The valve unit includes a third throttling mechanism, the block unit includes a fifth mounting hole, at least a portion of the third throttling mechanism is located in the fifth mounting hole, the block unit includes a ninth flow channel, and the fluid control device includes a third operating mode in which the ninth flow channel can be connected to the fifth flow channel by adjusting the third throttling mechanism.

5. The fluid control device according to claim 4, characterized in that, The valve unit includes a third valve mechanism, the block unit includes a sixth mounting hole, at least a portion of the third valve mechanism is located in the sixth mounting hole, the block unit includes a tenth flow channel, the tenth flow channel is connected to the first flow channel, and the fluid control device includes a fourth operating mode, in which the third valve mechanism enables the seventh flow channel to connect with the tenth flow channel.

6. The fluid control device according to claim 5, characterized in that, The block unit includes a block, which is an integral structure. The fluid control device has a first interface, a second interface, a third interface, a fourth interface, a fifth interface, a sixth interface, a seventh interface, an eighth interface, and a ninth interface. Each interface is located on the block or on a pipe or block that is fixedly or limitedly connected to the block. The inlet channel communicates with the first interface and the first mounting hole. The second channel communicates with the seventh interface and the first mounting hole. The first channel communicates with the second interface and the first mounting hole. The third channel communicates with the second interface and the second mounting hole. The outlet channel communicates with the third interface and the second mounting hole. The fourth channel communicates with the fourth interface and the second mounting hole. The fifth channel communicates with the fifth interface and the third mounting hole. The sixth channel communicates with the sixth interface and the third mounting hole. The seventh channel communicates with the eighth interface and the fourth mounting hole. The seventh channel communicates with the eighth interface and the sixth mounting hole. The ninth channel communicates with the ninth interface and the fifth mounting hole. In the first operating mode of the fluid control device, the first interface, the fourth interface, and the fifth interface are inlets, and the second interface, the third interface, and the sixth interface are outlets; in the second operating mode of the fluid control device, the first interface, the second interface, and the sixth interface are inlets, and the third interface, the fourth interface, the fifth interface, the seventh interface, and the seventh interface are outlets.

7. The fluid control device according to claim 6, characterized in that, The first interface, the second interface, and the third interface are located on the first side wall of the block, the fifth interface, the sixth interface, the seventh interface, and the ninth interface are located on the second side wall of the block, and the fourth interface and the eighth interface are located on the third side wall of the block. The second side wall is perpendicular to the first side wall, and the third side wall is perpendicular to the first side wall.

8. The fluid control device according to claim 7, characterized in that, The first mounting hole, the second mounting hole, the third mounting hole, the fourth mounting hole, the fifth mounting hole, and the sixth mounting hole all have openings, and the openings all face the same direction. The central axis of the second mounting hole, the fourth mounting hole, and the third mounting hole is located on the first surface, and the central axis of the first mounting hole, the fifth mounting hole, and the third mounting hole is located on the second surface. The first surface and the second surface are arranged parallel to each other.

9. The fluid control device according to any one of claims 6-8, characterized in that, The first flow channel includes a first common channel and a first sub-channel. The third flow channel includes the first common channel and a second sub-channel. The first common channel extends longitudinally from the second interface along the block unit. The first sub-channel and the second sub-channel extend laterally along the block unit to communicate with the first mounting hole and the second mounting hole, respectively. The fifth flow channel includes a first main channel, a first branch channel, and a second branch channel. The first main channel extends laterally from the fifth interface along the block unit. The first branch channel and the second sub-channel extend longitudinally along the block unit to communicate with the third mounting hole and the fifth mounting hole, respectively. The seventh flow channel includes a second main channel, a first branch channel, and a second branch channel. The second main channel extends laterally from the eighth interface along the block unit. The first branch channel and the second branch channel extend longitudinally along the block unit to communicate with the fourth mounting hole and the sixth mounting hole, respectively. The eighth flow channel includes a third sub-channel and a fourth sub-channel. The third sub-channel extends laterally along the block unit, and the fourth sub-channel extends longitudinally along the block unit.

10. The fluid control device according to claim 9, characterized in that, The second mounting hole, the fourth mounting hole, and the sixth mounting hole are arranged in a first column on the block, and the first mounting hole, the fifth mounting hole, and the third mounting hole are arranged in a second column on the block. The tenth flow channel is disposed in the space between the first column and the second column. The tenth flow channel includes a first branch and a second branch. The first branch extends laterally along the block unit to communicate with the sixth mounting hole, and the second branch extends longitudinally from the first branch along the block unit. The first branch and the second branch are arranged perpendicularly.

11. The fluid control device according to any one of claims 1-3, characterized in that, The fluid control device further includes a drive unit. The valve unit is fixedly connected or limited to the block unit. The drive unit drives the valve unit to operate. The drive unit includes a housing, a first drive unit, a second drive unit, a third drive unit, a fourth drive unit, a fifth drive unit, a sixth drive unit, and a circuit board. The housing is fixedly connected or limited to the block unit. Each drive unit is at least partially located inside the housing. Each drive unit is injection molded. During the injection molding process of each drive unit, the housing is injection molded. The circuit board is electrically connected to each drive unit.

12. The fluid control device according to claim 11, characterized in that, The circuit board is a flexible circuit board or a rigid circuit board. The circuit board includes through holes corresponding to the total number of valve mechanisms and throttling mechanisms of the valve unit, and each valve mechanism and each throttling mechanism passes through the through holes.

13. The fluid control device according to claim 11, characterized in that, The circuit board includes a first control unit, a second control unit, a third control unit, a fourth control unit, a fifth control unit, a sixth control unit, a first drive unit, a second drive unit, a third drive unit, a fourth drive unit, a fifth drive unit, and a sixth drive unit. The first control unit sends a first control signal to the first drive unit, the second control unit sends a second control signal to the second drive unit, the third control unit sends a third control signal to the third drive unit, the fourth control unit sends a first control signal to the fourth drive unit, the fifth control unit sends a fifth control signal to the fifth drive unit, and the sixth control unit sends a sixth control signal to the sixth drive unit.

14. The fluid control device according to claim 1, characterized in that, The first valve mechanism includes a first valve part, a second valve part, and a third valve part. Correspondingly, the first mounting hole includes a first sub-hole, a second sub-hole, and a third sub-hole. At least a portion of the first valve part is located in the first sub-hole, at least a portion of the second valve part is located in the second sub-hole, and at least a portion of the third valve part is located in the third sub-hole. The first valve section enables the inlet flow channel to communicate with the first flow channel, and the second valve section enables the inlet flow channel to communicate with the second flow channel; the block unit has a seventh flow channel, and the third valve section enables the inlet flow channel to communicate with the seventh flow channel.

15. The fluid control device according to claim 14, characterized in that, The second valve mechanism includes a fourth valve part and a fifth valve part, and the corresponding second mounting hole includes a fourth sub-hole and a fifth sub-hole, with at least a portion of the fourth valve part located in the fourth sub-hole and at least a portion of the fifth valve part located in the fifth sub-hole; The fourth valve section enables the third flow channel to connect with the outflow channel, and the fifth valve section enables the fourth flow channel to connect with the outflow channel.

16. The fluid control device according to claim 15, characterized in that, The seventh flow channel has an opening in the wall of the third sub-hole, and the third flow channel has an opening in the wall of the third sub-hole. The seventh flow channel communicates with the third flow channel through the third sub-hole. The second flow channel has an opening in the wall of the second sub-hole, and the fourth flow channel has an opening in the wall of the second sub-hole. The second flow channel communicates with the fourth flow channel through the second sub-hole.

17. The fluid control device according to any one of claims 14-16, characterized in that, The fluid control device includes a liquid storage heat exchange module, which has a liquid storage chamber, a first heat exchange channel, and a second heat exchange channel. The fluid in the first heat exchange channel can exchange heat with the fluid in the second heat exchange channel. The first heat exchange channel is connected to the liquid storage chamber. The liquid storage heat exchange module has a first connection port and a second connection port. The first connection port is connected to the liquid storage chamber, and the second connection port is connected through the second heat exchange channel. The liquid storage heat exchange module includes a first connecting part and a second connecting part. The block unit includes a first mating part. The first connecting part and the first mating part are sealed together. The first connecting port and the second connecting port are located in the first connecting part. The fifth flow channel has an opening in the first mating part. The outflow channel has an opening in the first mating part. The first connecting port communicates with the fifth flow channel. The second connecting port communicates with the outflow channel.

18. The fluid control device according to claim 17, characterized in that, The block unit has an eighth flow channel, which is connected to the outflow channel; the sixth flow channel includes a first sub-flow channel and a second sub-flow channel, and the fifth flow channel can be connected to the first sub-flow channel and the second sub-flow channel through the first throttling mechanism; the fluid control device has a first interface, a second interface, a third interface, a fourth interface, a fifth interface, a sixth interface, a seventh interface, an eighth interface, and a ninth interface, wherein the first interface is connected to the inflow channel, the second interface is connected to the first flow channel, the third interface is connected to the second flow channel, the fourth interface is connected to the eighth flow channel, the fifth interface is connected to the first sub-flow channel, the eighth interface is connected to the second sub-flow channel, the ninth interface is connected to the seventh flow channel, the sixth interface is located at the second connection part and is connected to the first heat exchange channel, and the seventh interface is located at the second connection part and is connected to the second heat exchange channel.

19. The fluid control device according to claim 18, characterized in that, The liquid storage heat exchange module includes a tank body, which is fixedly connected or limited to the first connecting part and the second connecting part. At least a portion of the first heat exchange channel, at least a portion of the second heat exchange channel, and at least a portion of the liquid storage chamber are located inside the tank body. A first surface is defined, which is perpendicular to the axial direction of the tank body. A first direction and a second direction are defined on the first surface, which are perpendicular to the second direction. Along the axial direction of the tank body, at least a portion of the liquid storage heat exchange module is located on one side of the block unit, and at least a portion of the first valve mechanism, at least a portion of the second valve mechanism, and at least a portion of the first throttling mechanism are located on the opposite side of the block unit. The inlet flow channel includes a first sub-segment and a second sub-segment. The first sub-segment extends along the first direction, and the second sub-segment extends along the second direction. Along the first direction, the second sub-hole is closer to the first sub-hole than the first interface. The extension direction of the second flow channel is consistent with the extension direction of the fourth flow channel. Along the axial direction of the tank, the second flow channel, the first flow channel, and the seventh flow channel are farther away from the tank than the inlet flow channel, and the third flow channel is farther away from the tank than the eighth flow channel and the outlet flow channel. Along the first direction, the first interface and the eighth interface face the same direction and face the opposite direction to the second interface and the ninth interface. Along the second direction, the fourth interface and the fifth interface face the same direction and face the opposite direction to the third interface.

20. A vehicle thermal management system, characterized in that, The device includes a compressor, a first heat exchanger, an intermediate heat exchanger, a second heat exchanger, a battery cooler, a gas cooler, and a fluid control device according to any one of claims 1-13. The first interface of the fluid control device is connected to the outlet of the compressor, the third interface of the fluid control device is connected to the inlet of the intermediate heat exchanger, and the second interface of the fluid control device is connected to the first heat exchanger. The second interface of the fluid control device serves as an outlet in the first, third, and fourth operating modes of the fluid control device, and as an inlet in the second operating mode. The fourth interface of the fluid control device serves as an inlet in the first operating mode and as an outlet in the second operating mode. The fifth interface of the fluid control device serves as an inlet in the first operating mode and as an outlet in the second, third, and fourth operating modes. The sixth interface of the fluid control device serves as an outlet in the first operating mode and as an inlet in the second operating mode. The seventh interface of the fluid control device serves as an outlet in both the second and fourth operating modes. The eighth interface of the fluid control device serves as an inlet in both the second and fourth operating modes. The ninth interface of the fluid control device serves as an outlet in both the second and fourth operating modes.

21. The vehicle thermal management system according to claim 20, characterized in that, The valve unit includes a third throttling mechanism, the block unit includes a ninth flow channel, and the fluid control device includes a third operating mode. In the third operating mode, the ninth flow channel can be connected to the fifth flow channel by adjusting the third throttling mechanism. When the vehicle thermal management system is in cooling mode one, the fluid control device is in the first operating mode. The flow path of at least a portion of the refrigerant flowing into the block of the vehicle thermal management system is: first interface, inlet flow channel, first valve mechanism, first flow channel, second interface, first heat exchanger, intermediate heat exchanger, fifth interface, fifth flow channel, first throttling mechanism, sixth flow channel, sixth interface, second heat exchanger, fourth interface, fourth flow channel, second valve mechanism, outlet flow channel, third interface, intermediate heat exchanger, and then back to the compressor. When the vehicle thermal management system is in heating mode, the fluid control device is in a second operating mode. The flow path of at least a portion of the refrigerant flowing into the block of the vehicle thermal management system is as follows: first interface, inlet channel, first valve mechanism, second channel, seventh interface, gas cooler, eighth interface, seventh channel, second throttling mechanism, eighth channel, fourth channel, fourth interface, second heat exchanger, sixth interface, sixth channel, first throttling mechanism, fifth channel, fifth interface, intermediate heat exchanger, first heat exchanger, second interface, third channel, second valve mechanism, outlet channel, intermediate heat exchanger, and then back to the compressor; When the vehicle thermal management system is in cooling mode two, the fluid control device is in the third working mode. The flow path of at least a portion of the refrigerant flowing into the block of the vehicle thermal management system is the first interface, the inlet channel, the first valve mechanism, the first channel, the second interface, the first heat exchanger, the intermediate heat exchanger, the fifth interface, the fifth channel, the third throttling mechanism, the ninth channel, the ninth interface, the battery cooler, the intermediate heat exchanger, and then back to the compressor. When the vehicle thermal management system defrosts, the fluid control device is in a fourth operating mode. The valve unit includes a third valve mechanism, and the block unit includes a tenth flow channel, which is connected to the first flow channel. In the fourth operating mode, the third valve mechanism enables the seventh flow channel to connect with the tenth flow channel. The flow path of at least a portion of the refrigerant flowing into the block of the vehicle thermal management system is: compressor outlet, first interface, inlet flow channel, first valve mechanism, second flow channel, seventh interface, gas cooler, eighth interface, seventh flow channel, third valve mechanism, intermediate heat exchanger, fifth interface, fifth flow channel, third throttling mechanism, ninth flow channel, ninth interface, battery cooler, intermediate heat exchanger, and then back to the compressor inlet.

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