Thermal management system

Abstract

The heat management system of the application comprises a fluid management device having a gas-liquid separation cavity and two inlets and three outlets. In one working mode, the refrigerant throttled through the first throttling cavity enters the compressor after the gas-liquid separator, and the gaseous refrigerant enters the second heat exchanger for heat exchange; in another working mode, the refrigerant throttled through the second throttling cavity enters the compressor after the gas-liquid separator, and the gaseous refrigerant enters the third heat exchanger for heat exchange. The heat management system can supplement gas and increase enthalpy in the two working modes, thereby improving the performance of the heat management system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal management, in particular to a thermal management system. BACKGROUND

[0002] The thermal management system is used for adjusting the temperature of a controlled object, so that the object is in a relatively suitable temperature range. Improving the performance of the thermal management system is a technical problem. SUMMARY

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

[0004] The embodiment of the technical scheme of the present application provides a thermal management system, which comprises a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger and a fluid management device. The fluid management device has a first inlet, a first outlet, a second inlet, a second outlet and a third outlet. The fluid management device comprises a first valve core, a second valve core and a block assembly. The first valve core has a first conduction channel, and the second valve core has a second conduction channel. The fluid management device has a first throttling cavity, a second throttling cavity and a gas-liquid separation cavity. The block assembly comprises a first containing part, a second containing part and a third containing part. The first containing part has a first containing cavity, and the gas-liquid separation cavity is part of the first containing cavity. The second containing part has a second containing cavity, and the first valve core and the first throttling cavity are located in the second containing cavity. The first valve core can adjust the opening degree of the first throttling cavity. The third containing part has a third containing cavity, and the second valve core and the second throttling cavity are located in the third containing cavity. The second valve core can adjust the opening degree of the second throttling cavity.

[0005] The outlet of the compressor is communicated with the first inlet of the fluid management device through the first heat exchanger. The third outlet of the fluid management device is communicated with the inlet of the compressor. The first outlet of the fluid management device can be communicated with the inlet of the compressor through the second heat exchanger or with the second inlet of the fluid management device. The second outlet of the fluid management device can be communicated with the inlet of the compressor through the third heat exchanger. In the first working mode of the thermal management system, the first valve core makes the first inlet communicated with the gas-liquid separation cavity through the first throttling cavity. In the second working mode of the thermal management system, the first valve core makes the first inlet communicated with the first port of the second heat exchanger through the first conduction channel. The second port of the second heat exchanger is communicated with the second inlet of the fluid management device. The second valve core makes the second throttling cavity communicated with the gas-liquid separation cavity.

[0006] The thermal management system of the present application includes a fluid management device having a gas-liquid separation chamber, two inlets, and three outlets. In one operating mode, after throttling the refrigerant through the first throttling chamber, the relatively gaseous refrigerant enters the compressor after the gas-liquid separator, while the relatively liquid refrigerant enters the second heat exchanger for heat exchange. In another operating mode, after throttling the refrigerant through the second throttling chamber, the relatively gaseous refrigerant enters the compressor after the gas-liquid separator, while the relatively liquid refrigerant enters the third heat exchanger for heat exchange. The thermal management system can replenish gas and increase enthalpy in both operating modes, thereby improving the performance of the thermal management system. Furthermore, the fluid management device can also relatively reduce the refrigerant flow resistance within the thermal management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic diagram of a three-dimensional structure of a first embodiment of a fluid management device from one perspective;

[0008] Figure 2 yes Figure 1 A schematic diagram of an exploded structure of a fluid management device from one perspective;

[0009] Figure 3 yes Figure 1 A schematic diagram of an exploded structure of a fluid management device from another perspective;

[0010] Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure of the first block from one perspective;

[0011] Figure 5 yes Figure 4 The right side structural diagram of the first block in the figure;

[0012] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure along AA;

[0013] Figure 7 yes Figure 5 Schematic diagram of the cross-sectional structure along BB;

[0014] Figure 8 yes Figure 1 A schematic diagram of the three-dimensional structure of the second block from one perspective;

[0015] Figure 9 yes Figure 4 The left-view structural diagram of the first block in the figure;

[0016] Figure 10 yes Figure 9 Schematic diagram of the cross-sectional structure along CC;

[0017] Figure 11 yes Figure 1A schematic diagram of the structure of the fluid management device from above;

[0018] Figure 12 yes Figure 9 Schematic diagram of the cross-sectional structure along DD;

[0019] Figure 13 is a schematic diagram of the positional relationship between the first channel, the gas-liquid separation chamber, the conduit, and the first projection plane;

[0020] Figure 14 1 is a schematic diagram of the three-dimensional structure of the first valve seat;

[0021] Figure 15 yes Figure 1 A schematic diagram of the structure of the fluid management device from above;

[0022] Figure 16 yes Figure 15 Schematic diagram of the cross-sectional structure along EE;

[0023] Figure 17 It is a three-dimensional structural diagram of the catheter assembly;

[0024] Figure 18 is a schematic perspective structural diagram of a second embodiment of a fluid management device;

[0025] Figure 19 is a structural schematic diagram of a third embodiment of a fluid management device;

[0026] Figure 20 is a structural schematic diagram of a fourth embodiment of a fluid management device;

[0027] Figure 21 is a connection diagram of a first embodiment of a thermal management system;

[0028] Figure 22 is a connection diagram of a second embodiment of the thermal management system;

[0029] Figure 23 is a schematic diagram of the working state of the fluid management device when the thermal management system is in the first working mode;

[0030] Figure 24 is a schematic diagram of the working state of the fluid management device when the thermal management system is in the second working mode;

[0031] Figure 25 is a schematic diagram of the working state of the fluid management device when the thermal management system is in the third working mode;

[0032] Figure 26 is a schematic diagram of the working state of the fluid management device when the thermal management system is in the fourth working mode;

[0033] Figure 27 is a schematic diagram of the working state of the fluid management device when the thermal management system is in the fifth working mode;

[0034] Figure 28 is a schematic diagram of the working state of the fluid management device when the thermal management system is in the sixth working mode. DETAILED DESCRIPTION

[0035] The fluid management device of the technical solution of the present application can have various embodiments, at least one of which can be applied to a vehicle thermal management system, at least one of which can be applied to a household thermal management system or a commercial thermal management system or other thermal management systems, and the following will be described by taking the fluid management device applied to the vehicle thermal management system as an example in combination with the accompanying drawings, the fluid being refrigerant, including R134a or CO2 or other forms of refrigerant.

[0036] Please refer to Figures 1-17The fluid management device 10 comprises a block assembly and a valve core, the block assembly comprises a first block 3200, a second block 3100 and a third block 3300, the first block 3200 is fixedly connected or positionally connected with the second block 3100, and the first block 3200 is fixedly connected or positionally connected with the third block 3300, the fixed connection herein includes that the two adjacent blocks are in an integrated structure, and also includes that the two adjacent blocks are fixedly connected by welding or adhesion or other forms of fixed connection, the positionally connected includes bolt connection or other forms of positionally connected, in the embodiment, the first block 3200, the second block 3100 and the third block 3300 are separately arranged, the second block 3100 is located on one side of the first block 3200, and the third block 3300 is located on the other side of the first block 3200 opposite to the one side, the first block 3200 and the second block 3100 are connected by bolts, and the first block 3200 and the third block 3300 are connected by bolts. The fluid management device 10 has a first channel 3201, a second channel 3202, a third channel 3203, a first cavity 3112, a second cavity 3312 and a gas-liquid separation cavity 3212, wherein the gas-liquid separation cavity 3212 is located in the first block 3200, the first cavity 3112 is located in the second block 3100, the second cavity 3312 is located in the third block 3300, at least part of the first channel 3201 is formed in the first block 3200, the first channel 3201 is in communication with the gas-liquid separation cavity 3212, at least part of the second channel 3202 is formed in the first block 3200, the second channel 3202 is in communication with the gas-liquid separation cavity 3212, and at least part of the third channel 3203 is formed in the first block 3200, the third channel 3203 is in communication with the gas-liquid separation cavity 3212. In the embodiment, the valve core is in a spherical or spherical-like or cylindrical structure, specifically, the valve core comprises a first valve core 100 and a second valve core 200, the first valve core 100 is located in the first cavity 3112, the first valve core 100 can rotate in the first cavity 3112, the first valve core 100 has a first through channel 110, in one working state of the fluid management device 10, the first cavity 3112 is in communication with the first channel 3201 through the first through channel 110, and then the first cavity 3112 is in communication with the gas-liquid separation cavity 3212. The fluid management device 10 further has a first throttling cavity 120', in the embodiment, the first valve core 100 has a first throttling groove 120, the first valve core 100 cooperates with a corresponding matching surface to form the first throttling cavity 120' of the fluid management device 10, the first cavity 3112 can be in communication with the first channel 3201 through the first throttling cavity 120', and then the first cavity 3112 is in communication with the second cavity 3312, and the refrigerant in the first cavity 3112 enters the gas-liquid separation cavity 3212 after being throttled and depressurized by the first throttling cavity 120'.Similarly, the second valve core 200 has a second conducting channel 210. The second valve core 200 is rotatable within the second chamber 3312, thereby enabling the second chamber 3312 to communicate with the third channel 3203 via the second conducting channel 210. The second valve core 200 has a second throttling groove 220. The second valve core 200 cooperates with a corresponding mating surface to form a second throttling chamber 220' of the fluid management device 10. The second chamber 3312 is able to communicate with the third channel 3203 via the second throttling chamber 220'. The refrigerant in the second chamber 3312 enters the gas-liquid separation chamber 3212 after being throttled and reduced in pressure by the second throttling chamber 220'.

[0037] The fluid management device 10 includes a first block 3200, a second block 3100, and a third block 3300. The gas-liquid separation chamber 3212 is located in the first block 3200, the first chamber 3112 is located in the second block 3100, and the second chamber 3312 is located in the third block 3300. At least a portion of the first channel 3201 is located in the first block 3200, at least a portion of the second channel 3202 is located in the first block 3200, and at least a portion of the third channel 3203 is located in the first block 3200. The first chamber 3112 is capable of passing through the gas-liquid separation chamber 3212. The first chamber 3312 is connected to the first channel 3201 through the first throttling chamber 120' or the first conducting channel 110, and the second chamber 3312 can be connected to the third channel 3203 through the second throttling chamber 220' or the second conducting channel 210. The first block 3200 and the second block 3100 are fixedly connected or limit-connected, and the first block 3200 and the third block 3300 are fixedly connected or limit-connected. This can relatively reduce the number of pipeline connections between different components, and the integration of the fluid management device 10 is relatively high, which can also reduce the refrigerant flow resistance.

[0038] See also Figure 16 The fluid management device 10 includes a control part. When the fluid management device 10 is working, the control part can drive the valve core to rotate. Specifically, the control part includes a first control part 2100 and a second control part 2200. The first control part 2100 includes a first valve stem 2110 that is transmission-connected to the first valve core 100. The second control part 2200 includes a second valve stem 2210 that is transmission-connected to the second valve core 200. Correspondingly, the second block 3100 includes a first valve stem hole portion, the first valve stem hole portion has a first valve stem hole, a portion of the first valve stem is located in the first valve stem hole, and the first valve stem 2110 is dynamically sealed with the first valve stem hole portion. Similarly, the third block 3300 includes a second valve stem hole portion, the second valve stem hole portion has a second valve stem hole, a portion of the second valve stem 2210 is located in the second valve stem hole, and the second valve stem 2210 is dynamically sealed with the second valve stem hole portion.

[0039] See also Figure 4-Figure 7 and Figure 17The first block 3200 includes a first accommodating portion 3210, which has a first accommodating chamber 3211. A gas-liquid separation chamber 3212 is a portion of the first accommodating chamber 3211 and is used to separate the gas and liquid of the refrigerant within the fluid management device 10. The first channel 3201 has an outlet on the sidewall of the first accommodating portion 3210, thereby communicating with the gas-liquid separation chamber 3212. The third channel 3203 has an outlet on the sidewall of the first accommodating portion 3210, thereby communicating with the gas-liquid separation chamber 3212. The fluid management device 10 includes a conduit assembly 500, at least a portion of which is located in the first accommodating chamber 3211. The conduit assembly 500 includes a connecting portion 510 and a conduit 520. The connecting portion 510 and the conduit 520 may be integral, separate, and then positionally connected, or positionally connected. The connecting portion 510 is fixedly or positionally connected to a corresponding portion of the first accommodating portion 3210 and relatively sealed at the connection. In this embodiment, the connecting portion 510 is threadedly connected to the first accommodating portion 3210. The conduit assembly 500 has a refrigerant passage, which includes a lumen of a conduit 520. The conduit 520 has a conduit 520 port, which faces the bottom wall of the first accommodating portion 3210. Refrigerant in the first cavity 3112 can enter the refrigerant passage through the conduit 520 port. The conduit 520 port is closer to the bottom wall of the first accommodating portion 3210 than the outlet of the first channel 3201. In other words, along the axial direction of the conduit 520, the conduit 520 port is located between the outlet of the first channel 3201 and the bottom wall of the first accommodating portion 3210. The wall forming the gas-liquid separation chamber 3212 includes the sidewall of the first accommodating portion 3210, which is generally annular. The catheter 520 is located near the central axis of the first cavity 3112 . Furthermore, the axis of the catheter 520 roughly coincides with the axis of the first cavity 3112 .

[0040] The fluid management device 10 comprises a second channel portion 3220 having a second channel 3202, at least a portion of the second channel 3202 is shaped in the first block 3200, the second channel 3202 has a second channel 3202 inlet at the bottom wall of the first accommodating portion 3210. In other embodiments, the second channel portion 3220 comprises a throttling portion 3224, the throttling portion 3224 has a hole diameter ranging from 1.0 to 2.0 millimeters, after the portion of the refrigerant in the gas-liquid separation cavity 3212 enters the second channel 3202, the throttling portion can throttle and depressurize the refrigerant. In a specific embodiment, the second channel portion 3220 comprises a first sub-portion 3221, a second sub-portion 3222 and a third sub-portion 3223, the channel corresponding to the first sub-portion 3221 has the second channel 3202 inlet at the bottom wall of the first accommodating portion 3210, the channel corresponding to the second sub-portion 3222 has a port at the first sub-portion 3221, thereby the second sub-portion 3222 communicates with the first sub-portion 3221, the channel corresponding to the third sub-portion 3223 has a port at the first sub-portion 3221, thereby the third sub-portion 3223 communicates with the first sub-portion 3221. The throttling portion 3224 can be at least a portion of the first sub-portion 3221, the throttled refrigerant enters the second sub-portion 3222 and the third sub-portion 3223 respectively; or, the throttling portion 3224 can also be two, that is, a first throttling portion and a second throttling portion, the first throttling portion is at least a portion of the second sub-portion 3222, the second throttling portion is at least a portion of the third sub-portion 3223, the refrigerant flows out after being throttled in the second sub-portion 3222 and the third sub-portion 3223 respectively.

[0041] A first projection plane is defined, the first projection plane is perpendicular to the axis of the conduit 520, the axis direction of the conduit 520 is the up-down direction, the conduit 520 port is located below the first channel 3201 outlet, in the embodiment, the axis of the gas-liquid separation cavity 3212 is parallel to the axis of the conduit 520. It can be known that the first channel 3201 and the third channel 3203 are the entering channels of the gas-liquid separation cavity 3212, the second channel 3202 is the flowing-out channel of the gas-liquid separation cavity 3212, please refer to Figure 13The projection of the first channel 3201 on the first projection plane has a first edge 3001 and a second edge 3002. The first edge 3001 is closer to the projection 520' of the conduit 520 on the first projection plane than the second edge 3002. The extension lines of the first edge 3001 and the second edge 3002 are located on the same side of the projection 520' of the conduit. Furthermore, the second edge 3002 is a tangent to the projection 3213' of the side wall of the first accommodating portion 3210. In this way, a large amount of mixed refrigerant entering the second chamber 3312 from the first channel 3201 collides with the side wall of the first accommodating portion 3210. Because the side wall of the first accommodating portion 3210 is an annular surface, the refrigerant rotates and flows within the gas-liquid separation chamber 3212, which can accelerate the separation of the mixed refrigerant in the gas-liquid separation chamber 3212. The gaseous refrigerant enters the refrigerant channel from the port of the conduit 520, and the liquid refrigerant enters the second channel 3202 from the second channel inlet. Similarly, the projection of the third channel 3203 on the first projection plane has a third sideline 3003 and a fourth sideline 3004. The third sideline 3003 is closer to the projection of the conduit 520 on the first projection plane than the fourth sideline 3004. The extensions of the third and fourth sides are located on the same side of the projection of the conduit 520. Furthermore, the fourth sideline is located at a tangent to the projection of the sidewall of the first accommodating portion 3210. The extension of the first sideline and the extension of the third sideline may intersect, where the intersection includes both in-plane and out-of-plane intersections. Alternatively, the first and third sides may be arranged in parallel, and the extensions of the first and third sides may be located on the same or different sides of the projection of the conduit 520.

[0042] See also Figures 8-10 and Figure 12 、 Figure 16The second block 3100 includes a second accommodating portion 3110, the second accommodating portion 3110 has a second accommodating cavity 3111, the second accommodating cavity 3111 has a cavity opening facing the first block 3200, the first cavity 3112 is a part of the second accommodating cavity 3111, and the first cavity 3112 can also be called the first valve cavity of the fluid management device 10. The fluid management device 10 includes a first valve seat assembly 800. In the present embodiment, the first valve seat assembly 800 includes a first valve seat 810 and a second valve seat 820. The second valve seat 820 is located in the second accommodating chamber 3111. The second valve seat 820 is fixed to or limited to a corresponding part of the second accommodating portion 3110. At least part of the first valve seat 810 is located in the second accommodating chamber 3111. In the present embodiment, the first valve seat 810 is closer to the first block 3200 than the second valve seat 820. The first valve seat 810 is located on one side of the first valve core 100, and the second valve seat 820 is located on the other side opposite to the first valve core 100. The first valve seat 810 has a first through hole 811, and the second valve seat 820 has a second through hole. The first through hole and the second through hole can be channels for refrigerant. In the present embodiment, the axis of the first through hole coincides with the axis of the second through hole. The first valve seat 810 and the second valve seat 820 both have mating surfaces that cooperate with the first valve core 100, and the first through hole and the second through hole have openings on the corresponding mating surfaces. The mating surface 812 of the first valve seat 810 and the mating surface of the second valve seat 820 contact and squeeze the first valve core 100, and the mating surface 812 of the first valve seat 810 and the mating surface of the second valve seat 820 slide together with the first valve core 100. Similarly, the third block 3300 includes a third accommodating portion 3310, the third accommodating portion 3310 has a third accommodating cavity 3311, the second cavity 3312 is a part of the third accommodating cavity 3311, the second cavity 3312 can also be called the second valve cavity of the fluid management device 10, the fluid management device 10 includes a second valve seat assembly 900, the second valve seat assembly 900 includes a third valve seat 910 and a fourth valve seat 920, the fourth valve seat 920 is located in the third accommodating cavity 3311, at least part of the third valve seat 910 is located in the third accommodating cavity 3311, the third valve seat 910 is closer to the first block 3200 than the fourth valve seat 920, the third valve seat 910 and the fourth valve seat 920 have through holes for refrigerant circulation, which are no longer described in detail.

[0043] The matching mode of the first block 3200 and the second block 3100 is the same as that of the first block 3200 and the third block 3300. The matching features of the first block 3200 and the third block 3300 are the same as those of the first block 3200 and the second block 3100. The matching mode of the first block 3200 and the second block 3100 is used as an example for description. Figure 2-Figure 10The first block 3200 includes a first wall portion 3220, and the second block 3100 includes a second wall portion 3120. At least a portion of the second wall portion 3120 is disposed opposite the first wall portion 3220. An opening of the second accommodating cavity 3111 is formed in the second wall portion 3120. The first block 3200 includes a first surface, which contacts and presses against the first valve seat 810. In this embodiment, the first block 3200 includes a first protrusion 3230, which protrudes relative to the first wall portion 3220, and at least part of the first protrusion 3230 is located in the second accommodating chamber 3111. The first surface of the first protrusion 3230 contacts and squeezes the first valve seat 810, and then the mating surface of the first valve seat contacts and squeezes the first valve core 100. Since the mating surface of the second valve seat also limits the first valve core 100, the first protrusion 3230 contacts and squeezes the first valve seat 810. Under the joint action of the second valve seat 820, the first valve core 100 is limited to the second accommodating chamber 3111. By fixing or limiting the connection between the first block 3200 and the second block 3100, the first protrusion 3230 of the first block 3200 limits the first valve core 100 to be relatively located in the second accommodating chamber 3111. There is no need to separately set up a component that is fixed or limited to the second block 3100, such as a valve cover. This not only reduces the number of components, but also reduces the number of installation steps.

[0044] Furthermore, the first block 3200 may further include a first recessed portion 3240 having a first cavity 3241. The first cavity 3241 has a recessed opening on the wall of the first raised portion 3230 facing the first valve seat 810. At least a portion of the first valve seat 810 is located in the first cavity 3241. The first valve seat 810 and the first recessed portion 3240 are relatively sealed. In this case, the first surface is the bottom wall of the first recessed portion 3240 or a portion of the bottom wall of the first recessed portion 3240. Providing the first recessed portion 3240 on the first raised portion 3230 can reduce the volume and weight of the fluid management device 10.

[0045] See also Figure 7The first block 3200 has a first opening 3204 located on the first face of the second block 3100, the first opening 3204 communicates with the first channel 3201, and the first opening 3204 faces the first valve core 100. In the embodiment, the first opening 3204 can be an inlet of the first channel 3201, the first opening 3204 is located on the bottom wall of the first groove portion 3240, and the first opening 3204 faces the first through hole. For the convenience of subsequent description, a first plane is defined, the first plane is perpendicular to the axis of the first through hole, and when the first throttling groove 120 guides the first cavity 3112 to the first opening 3204, at least part of the projection of the first throttling groove 120 in the first plane is located in the projection of the first opening 3204 in the first plane. In this way, the throttled refrigerant can enter the first channel 3201 through the first opening 3204 to the maximum extent, thereby reducing the flow resistance of the throttled refrigerant entering the first channel 3201.

[0046] Please refer to Figure 5 and Figure 12 . In the first plane, a first direction and a second direction are defined, wherein the first direction is parallel to the axis of the conduit 520, that is, the first direction is parallel to the axis of the second cavity 3312, the first direction and the second direction are perpendicular, the maximum length of the first opening 3204 in the first direction is greater than the maximum length of the first opening 3204 in the second direction. When the first throttling groove 120 has the maximum projection on the first face during the operation of the fluid management device 10, the maximum length of the projection of the first throttling groove 120 in the first plane in the first direction is greater than the maximum length of the projection of the first throttling groove 120 in the first face in the second direction. In this way, the extension direction of the first throttling groove 120 is consistent with the extension direction of the first opening 3204, and during the rotation of the first valve core 100, the refrigerant can enter the first opening 3204 to the maximum extent in the throttling stroke. Further, the first valve core 100 can rotate around the axis of the first valve rod, the axis of the first valve rod is parallel to the second direction, so that the extension direction of the first throttling groove 120 is perpendicular to the axis of the first valve rod 2300, which is beneficial to control the formation of the first valve core 100 by controlling the rotation angle of the first valve core 100, and further beneficial to control the throttling stroke of the first valve core 100. Please refer to Figure 14 The first block 3200 includes a first channel 3201 portion having the first channel 3201, and the first channel 3201 portion includes a second face inclined relative to the axis of the first through hole, the second face extends along the first direction, and the second face is offset from the first face to the opposite side of the second face. When the first throttling groove 120 guides the first cavity 3112 to the first opening 3204, at least part of the projection of the first throttling groove 120 in the first plane is located in the projection of the second face in the first plane.

[0047] The first block 3200 includes features such as a second protrusion, a third surface, a fourth surface, a second opening, and a second groove portion that cooperate with the third block 3300, which will not be described in detail.

[0048] See also Figure 1 、 Figure 6 、 Figure 12 and Figure 16 The fluid management device 10 comprises a first inlet 103, a first outlet 102, a second outlet 105, a third inlet 104, and a third outlet 101. In this embodiment, the first inlet 103 and the first outlet 102 are formed in the second block 3100, and the first inlet 103 communicates with the first chamber 3112. In this embodiment, along the axial direction of the first valve stem, the first valve core 100 is located between at least a portion of the first valve stem and the first inlet 103. Since refrigerant entering the first chamber 3112 through the first inlet 103 can impact the first valve core 100, the first inlet 103 is located on the opposite side of the first valve stem. This reduces any shaking of the first valve core 100 caused by the refrigerant impact, thereby maintaining the stability of the first valve core 100. The third outlet 101 is located in the conduit assembly 500, specifically, at the connection portion 510 of the conduit assembly 500. The third outlet 101 communicates with the refrigerant passage of the conduit assembly 500, and further communicates with the gas-liquid separation chamber 3212. In one operating state of the fluid management device 10, the first chamber 3112 can communicate with the gas-liquid separation chamber 3212 via the first throttling chamber 120' or the first conducting channel 110, and finally be discharged through the third outlet 101 and the second channel 3202. In another operating state of the fluid management device 10, the first chamber 3112 can communicate with the first outlet 102 via the first throttling chamber 120' or the first conducting channel 110, and the fluid in the first chamber 3112 can be discharged through the second outlet 105. To facilitate the discharge of gaseous refrigerant from the fluid management device 10, the third outlet 101 can be located on the upper wall of the conduit assembly 500. The second inlet 104 and the second outlet 105 are located in the third block 3300. Along the axial direction of the second valve stem, the second valve core 200 is located between at least part of the second valve stem and the second inlet 104. In one working state of the fluid management device 10, the second chamber 3312 can be connected to the gas-liquid separation chamber 3212 through the second throttling chamber 220' or the second conducting channel 210, and finally discharged from the third outlet 101 and the second channel 3202; in another working state of the fluid management device 10, the second chamber 3312 can be connected to the second outlet 105 through the second throttling chamber 220' or the second conducting channel 210, and the refrigerant in the second chamber 3312 can be discharged from the second outlet 105.

[0049] The fluid management device 10 further comprises a fourth passage 3113 and a fifth passage 3114, in this embodiment, the fifth passage 3114 and the fourth passage 3113 are formed in the second block 3100. The fifth passage 3114 is in communication with the second outlet 105, and the fifth passage 3114 is in communication with the second passage 3202. The fourth passage 3113 is adjacent to the second valve seat 820, and the fourth passage 3113 is in communication with the second through hole, and the fourth passage 3113 has a port in the wall forming the fifth passage 3114, and the fourth passage 3113 is in communication with the fifth passage 3114. In another working state of the fluid management device 10, that is, when the first throttling cavity 120' or the first through channel 110 is in communication with the first cavity 3112 and the second through hole, the first cavity 3112 is in communication with the fourth passage 3113, or the refrigerant of the first cavity 3112 can enter the fourth passage 3113, the fifth passage 3114 through the first throttling cavity 120' or the first through channel 110, and then be discharged from the first outlet 102 to the fluid management device 10. The fluid management device 10 comprises a first one-way valve component 600, the first one-way valve component 600 is located in the fifth passage 3114, the second passage 3202 can be unidirectionally communicated with the first outlet 102 through the first one-way valve component 600, and the communication position of the fifth passage 3114 and the fourth passage 3113 is adjacent to the first outlet 102 relative to the first one-way valve component 600, so that the refrigerant entering the fifth passage 3114 from the fourth passage 3113 can only be discharged from the first outlet 102, and cannot enter the second passage 3202. Further, the fifth passage 3114 comprises a first sub-section 31141 and a second sub-section 31142, wherein the first sub-section 31141 is located below the first cavity 3112 along the axial direction of the conduit 520, the first sub-section 31141 is in communication with the second passage 3202, and the first one-way valve component 600 is located in the first sub-section 31141; the second sub-section 31142 is in communication with the first outlet 102 and the fourth passage 3113, the second sub-section 31142 is parallel to the axial line of the conduit 520, and the second sub-section 31142 is farther away from the gas-liquid separation cavity 3212 than the first cavity 3112. The first sub-section 31141 and the second sub-section 31142 are arranged in the second block 3100, which facilitates the processing and forming of the third passage 3203.

[0050] The fluid management device 10 further comprises a sixth passage 3313 and a seventh passage 3314, the seventh passage 3314 and the sixth passage 3313 are formed in the third block 3300. The seventh passage 3314 is in communication with the second outlet 105, and the seventh passage 3314 is in communication with the second passage 3202. The sixth passage 3313 is close to the fourth valve seat 920, the sixth passage 3313 is in communication with the through hole of the fourth valve seat 920, the sixth passage 3313 has a port on the wall forming the seventh passage 3314, and the sixth passage 3313 is in communication with the fifth passage 3114. In another working state of the fluid management device 10, that is, when the second throttling cavity 220' or the second through channel 210 is in communication with the through hole of the fourth valve seat 920, the second cavity 3312 is in communication with the sixth passage 3313, or the refrigerant in the second cavity 3312 can enter the sixth passage 3313, the seventh passage 3314 through the second throttling cavity 220' or the second through channel 210, and then be discharged from the fluid management device 10 through the second outlet 105. The fluid management device 10 comprises a second one-way valve component 700, the second one-way valve component 700 is located in the seventh passage 3314, the second passage 3202 can be unidirectionally communicated with the second outlet 105 through the second one-way valve component 700, and the communication position of the seventh passage 3314 and the sixth passage 3313 is closer to the second outlet 105 than the first one-way valve component 600, so that the refrigerant entering the seventh passage 3314 from the sixth passage 3313 can only be discharged from the second outlet 105 and cannot enter the second passage 3202. Further, the seventh passage 3314 comprises a third sub-section 33141 and a fourth sub-section 33142, wherein the third sub-section 33141 is located below the second cavity 3312 along the axial direction of the conduit 520, the third sub-section 33141 is in communication with the second passage 3202, and the second one-way valve component 700 is located in the third sub-section 33141; the fourth sub-section 33142 is in communication with the second outlet 105 and the sixth passage 3313, the fourth sub-section 33142 is parallel to the axis of the first cavity 3112, and the fourth sub-section 33142 is farther away from the gas-liquid separation cavity 3212 than the second cavity 3312. The second block 3100 is provided with the third sub-section 33141 and the fourth sub-section 33142, which facilitates the machining and forming of the sixth passage 3313. Further, the fluid management device 10 can further comprise a third valve core and a driving part for actuating the third valve core, the third valve core is used for opening and / or closing the passage of the third sub-section 3223, the third valve core is located between the second throttling part and the second one-way valve part, the first block 3200 or the third block 3300 has a mounting hole for accommodating at least part of the driving part, and the fluid management device 10 is provided with the third valve core, so that the refrigerant in the second passage part 3220 can be controlled to flow only to the fifth passage 3114 and not to the seventh passage 3314.

[0051] In other embodiments, the second block 3100 may not include the fifth channel 3114. In this case, the fourth channel 3113 is connected to the first outlet 102. The third block 3300 does not include the seventh channel 3314, the sixth channel 3313 is connected to the second outlet 105, and the second channel 3202 has a fourth outlet in the first block 3200. In this case, the second channel 3202 has only one outlet. Of course, the second channel 3202 may also include two outlets, such as the second sub-section 3222 having one outlet in the first block 3200 and the third sub-section 3223 having one outlet in the second block 3100. The fluid management device 10 is not provided with the fifth channel 3114 and the seventh channel 3314, which can reduce the processing difficulty and is also beneficial to reducing the leakage risk caused by the connection between the second channel 3202 and the fifth channel 3114, and is also beneficial to reducing the leakage risk caused by the connection between the second channel 3202 and the seventh channel 3314; the one-way valve component and / or the second one-way valve component 700 can also be omitted, reducing the parts and assembly difficulty of the fluid management device 10.

[0052] See also Figure 18 In the second embodiment shown, compared to the first embodiment, the fluid management device 10 may also not include the third block 3300 and the second valve core 200. In this case, the fluid management device 10 has a first inlet 103, a first outlet 102, a second outlet 105, a second inlet 104, and a third outlet 101. The second inlet 104 is connected to the third channel 3203. In this embodiment, the second outlet 105 is an outlet of the second channel 3202. Of course, the fluid management device 10 may also not include the first block 3200 and the first valve core 100. In this case, the first inlet 103 is connected to the first channel 3201, and the first outlet 102 is an outlet of the second channel 3202.

[0053] See also Figure 19The third embodiment illustrated differs from the first embodiment in that the second block 3100 includes a first hole portion 3130 having a first hole 3131. The first valve core 100 is needle-shaped. The first valve core 100 and the first hole portion 3130 form a first throttling chamber. The opening of the first throttling chamber is adjusted by moving the first valve core 100 away from and toward the first hole portion 3130, thereby throttling and reducing the pressure of the refrigerant. In other embodiments, the first hole portion 3130 is located on a valve seat that cooperates with the first valve core 100, and the valve seat is fixedly connected or positionally connected to the second block 3100. The second block 3100 has a first communicating channel 3140 and a second communicating channel 3150. When the first valve core 100 opens the first hole 3131, the first communicating channel 3140 communicates with the second communicating channel 3150 through the first hole 3131, the first inlet 103 communicates with the first communicating channel 3140, and the second communicating channel 3150 communicates with the first channel 3201. Alternatively, the fluid management device 10 includes a second orifice portion having a second hole. In this embodiment, the second orifice portion is located within the third block. The second valve core is needle-shaped. The second valve core and the second orifice portion form a second throttling chamber. The opening of the second throttling chamber is adjusted by moving the second valve core 200 away from and toward the second orifice portion, thereby throttling and reducing the pressure of the refrigerant. In other embodiments, the second orifice portion 3320 is located on a valve seat that cooperates with the second valve core 200. The valve seat is fixedly connected or position-limited to the third block. The third block has a third and a fourth connecting channel. When the second valve core opens the second hole, the third connecting channel communicates with the fourth connecting channel through the second hole, the second inlet communicates with the third connecting channel, and the fourth connecting channel communicates with the third channel. Compared to the first embodiment, the needle-shaped valve core is lighter, which helps reduce the weight of the fluid management device.

[0054] See also Figure 20Compared to the third embodiment, the illustrated fourth embodiment includes a fluid management device 10 that includes a fourth valve core 80 and a valve port that cooperates with the fourth valve core 80. Specifically, the second block 3100 includes a fourth accommodating portion having a fourth accommodating chamber. The fourth valve core 80 is located in the fourth accommodating chamber, and the first communication channel 3140 communicates with the fourth accommodating chamber. The second block 3100 includes a fifth communication channel 3150 that communicates with the first outlet 102. When the fourth valve core 80 closes the valve port, the first communication channel 3140 and the fifth communication channel 3150 are disconnected. When the fourth valve core 80 opens the valve port, the first communication channel 3140 and the fifth communication channel 3150 communicate. The fourth valve core 80 can be a piston, a spherical structure, or a quasi-spherical structure. After refrigerant enters the fluid management device 10 through the first inlet 103, the refrigerant can be selectively directed to enter the gas-liquid separation chamber 3212 or be discharged through the first outlet 102 by controlling the first valve core 100 and the fourth valve core 80. Alternatively, the fluid management device 10 may further include a fifth valve core, the fluid management device 10 having a valve port that cooperates with the fifth valve core, the third block including a fifth accommodating portion, the fifth accommodating portion having a fifth accommodating chamber, the fifth valve core 0 being located in the fifth accommodating chamber, the third communication channel being connected to the fifth accommodating chamber, and the third block 3300 having a sixth communication channel that is connected to the seventh channel. When the fifth valve core closes the valve port that cooperates with it, the third communication channel and the sixth communication channel are disconnected. When the fifth valve core opens the valve port that cooperates with it, the third communication channel and the sixth communication channel are connected. The fifth valve core may be a piston, a spherical structure, or a quasi-spherical structure. After the refrigerant enters the fluid management device 10 through the second inlet, the refrigerant can be selected to enter the gas-liquid separation chamber or be discharged through the second outlet by controlling the second valve core and the fifth valve core.

[0055] This application also discloses a thermal management system, see Figure 21The thermal management system includes a compressor 1, a first heat exchanger 11, a second heat exchanger 12, a third heat exchanger 13, and a fluid management device 10. The compressor 1 has an outlet and at least one inlet. In this embodiment, the compressor 1 has two inlets, namely a first inlet and a second inlet. The first inlet 1001 of the compressor is a relatively high-pressure inlet, and the second inlet 1002 of the compressor is a relatively low-pressure inlet. The fluid management device 10 has at least a first inlet 103, a second inlet 104, a first outlet 102, a second outlet 105, and a third outlet 101. The outlet 1003 of the compressor can be connected to the first inlet 103 of the fluid management device 10 through the first heat exchanger 11. The high-pressure and high-temperature refrigerant discharged from the compressor 1 is released in the first heat exchanger 11. Heat, the third outlet 101 of the fluid management device 10 is connected to the first inlet 1001 of the compressor, and the second outlet 105 of the fluid management device 10 is connected to the first port of the second heat exchanger 12, so that the refrigerant flowing out of the fluid management device 10 can enter the second heat exchanger 12, and the second port of the second heat exchanger 12 can be connected to the second inlet 1002 of the compressor through the stop valve 17 or through the second inlet 1002 of the compressor through the gas-liquid separator, and the second port of the second heat exchanger 12 can also be connected to the second inlet 104 of the fluid management device 10, and the second outlet 105 of the fluid management device 10 is connected to the second inlet 1002 of the compressor through the third heat exchanger 13 or through the gas-liquid separator.

[0056] In this embodiment, the first heat exchanger 11 is a dual-channel heat exchanger. The refrigerant channel of the first heat exchanger 11 is connected to the compressor outlet. The heat exchanger connected to the coolant channel of the first heat exchanger 11 is located in the vehicle's air conditioning unit. The third heat exchanger 13 is also located in the vehicle's air conditioning unit. The heat exchanger connected to the coolant channel of the first heat exchanger 11 is located downwind of the third heat exchanger 13 along the airflow direction within the air conditioning unit. Of course, the third heat exchanger 13 may also include both a refrigerant channel and a coolant channel. The refrigerant channel of the third heat exchanger 13 is connected to the compressor inlet, and the heat exchanger connected to the coolant channel of the third heat exchanger 13 is located in the vehicle's air conditioning unit. The second heat exchanger 12 is used for heat exchange with ambient air. In other embodiments, the first heat exchanger 11 is capable of heat exchange with the airflow passing through it. The first heat exchanger 11 may be a microchannel heat exchanger. In this case, the first heat exchanger 11 is located in the air conditioning unit.

[0057] The thermal management system includes a first operating mode and a second operating mode. In the first operating mode of the thermal management system, please refer to Figure 23The first valve core 100 allows the first inlet 103 to communicate with the gas-liquid separation chamber 3212 through the first throttling chamber 120'. Specifically, the high-temperature and high-pressure refrigerant releases heat in the first heat exchanger 11, and the fluid management device 10 is in the first working state. At this time, the first valve core 100 is in the first working position, that is, the first inlet 103 is communicated with the gas-liquid separation chamber 3212 through the first throttling chamber 120'. At this time, the first throttling chamber 120' is connected to the first accommodating chamber 3211 and the first channel 3201, and the second channel 3202 is connected to the first outlet 102. The throttled refrigerant is separated into gas and liquid in the gas-liquid separator, and the relatively gaseous refrigerant enters the first inlet 103 of the compressor through the third outlet 101 to participate in the next cycle. In this way, more gaseous refrigerant enters the first heat exchanger 11 to release heat, which can improve the heating effect; the relatively liquid refrigerant enters the second heat exchanger 12 through the first outlet 102, evaporates and absorbs heat in the second heat exchanger 12, and then the refrigerant enters the second inlet 1002 of the compressor. At this time, the second valve core 200 disconnects the second inlet 104 from the third outlet 101, and disconnects the second inlet 1002 from the gas-liquid separation chamber 3212. The first operating mode can also be called the first heating mode of the thermal management system.

[0058] In the second operating mode of the thermal management system, see Figure 24 The fluid management device 10 is in the second working state. At this time, the first valve core 100 is in the second working position. The first conducting channel 110 connects the second accommodating chamber 3111 and the first outlet 102. In other words, the first valve core 100 connects the first inlet 103 with the first port of the second heat exchanger 12 through the first conducting channel 110, and the second port of the second heat exchanger 12 connects with the second inlet 104 of the fluid management device 10. At this time, the second valve core 200 is in the first working position. The second throttling chamber 220' connects the third accommodating chamber 3311 and the third channel 3203. In other words, the second valve core 200 connects the second throttling chamber 220' with the gas-liquid separation chamber 3212, and the second channel 3202 connects to the second outlet 105. Specifically, high-temperature, high-pressure refrigerant passes through first heat exchanger 11 and fluid management device 10 and enters second heat exchanger 12, releasing heat there. The refrigerant is throttled by second throttling chamber 220' and separated into gas and liquid in a gas-liquid separator. The relatively gaseous refrigerant enters first inlet 1001 of the compressor for the next cycle, while the relatively liquid refrigerant enters third heat exchanger 13 for evaporation and absorption of heat. This higher liquid content improves the cooling effect, and the refrigerant then enters second inlet 1002 of the compressor for the next cycle. The first operating mode can also be referred to as the first cooling mode of the thermal management system.

[0059] The thermal management system may also include at least one of the following operating modes. In the third operating mode of the thermal management system, please refer to Figure 25The high-temperature, high-pressure refrigerant releases heat in the first heat exchanger 11. At this time, the first valve core 100 is in the third operating position. The first valve core 100 connects the first inlet 103 to the first outlet 102 through the first throttling chamber 120'. The throttled and reduced-pressure refrigerant evaporates and absorbs heat in the second heat exchanger 12. The second port of the second heat exchanger 12 is connected to the second inlet 1002 of the compressor. The third operating mode of the thermal management system can also be called the second heating mode.

[0060] In the fourth operating mode of the thermal management system, please refer to Figure 26 The high-temperature, high-pressure refrigerant releases heat in the first heat exchanger 11. The first valve core 100 is in the third operating position, connecting the first inlet 103 to the first outlet 102 via the first throttling chamber 120'. The throttled and reduced-pressure refrigerant evaporates and absorbs heat in the second heat exchanger 12. The second port of the second heat exchanger 12 is connected to the second inlet 104 of the fluid management device 10. The second valve core 200 is in the second operating position, connecting the second conducting channel 210 to the second inlet 104 and the second outlet 105. The refrigerant enters the third heat exchanger 13 through the fluid management device 10 and continues to evaporate and absorb heat. The fourth operating mode of the thermal management system can also be referred to as the first dehumidification mode.

[0061] In the fifth operating mode of the thermal management system, please refer to Figure 27 The high-temperature, high-pressure refrigerant releases heat in the first heat exchanger 11. The first valve core 100 is in the first operating position. The first throttling chamber 120' connects the first accommodating chamber 3211 and the first channel 3201. The second channel 3202 connects to the first outlet. The throttled and reduced-pressure refrigerant evaporates and absorbs heat in the second heat exchanger 12. The second port of the second heat exchanger 12 connects to the second inlet 104 of the fluid management device 10. The second valve core 200 is in the second operating position. The second valve core 200 connects the second conducting channel 210 to the second inlet 104 and the second outlet 105. The refrigerant enters the third heat exchanger 13 through the fluid management device 10 and continues to evaporate and absorb heat. The fifth operating mode of the thermal management system can also be referred to as the second dehumidification mode.

[0062] In the sixth operating mode of the thermal management system, please refer to Figure 28, the high-temperature and high-pressure refrigerant releases heat in the first heat exchanger 11, the first valve core 100 is in the first working position, the first throttling chamber 120' communicates the first containing chamber 3211 and the first passage 3201, the second passage 3202 communicates the second outlet 105 and the first outlet 102, the second port of the second heat exchanger 12 communicates the second inlet 1002 of the compressor, the second port of the third heat exchanger 13 communicates the second inlet 1002 of the compressor, and the refrigerant throttled and depressurized evaporates and absorbs heat in the second heat exchanger 12 and the third heat exchanger 13. The sixth working mode of the thermal management system can also be referred to as the third dehumidification mode.

[0063] In one specific embodiment, the fluid management device 10 can further comprise a throttling portion, which can re-throttle the relatively liquid refrigerant to improve the evaporative and heat-absorbing capacity of the refrigerant entering the second heat exchanger 12 and / or the evaporative and heat-absorbing capacity of the refrigerant entering the third heat exchanger 13.

[0064] In another specific embodiment, the block assembly comprises a second passage portion 3220, the second passage portion 3220 has a second passage 3202, the second passage 3202 has an outlet in the block assembly, the second passage portion 3220 comprises a throttling portion, the thermal management system comprises a first switch valve and a second switch valve, the second passage 3202 outlet communicates with the first port of the second heat exchanger 12 through the second switch valve, and the second passage 3202 outlet communicates with the first port of the third heat exchanger 13 through the second switch valve.

[0065] Please refer to Figure 22 the fourth embodiment shown in the figure. The thermal management system further comprises a throttling valve 14 and a fourth heat exchanger 15, the throttling valve 14 is located upstream of the fourth heat exchanger 15, the refrigerant throttled and depressurized by the throttling valve 14 evaporates and absorbs heat in the fourth heat exchanger 15, and the other port of the second heat exchanger 12 communicates with the inlet of the compressor through the throttling valve 14 and the fourth heat exchanger 15 or communicates with the inlet of the compressor through the gas-liquid separator. The fourth heat exchanger 15 can be a plate heat exchanger or a micro-channel heat exchanger, and the fourth heat exchanger 15 can be used to regulate and control the heat generating components in the vehicle, such as the battery.

[0066] It should be noted that the above examples are only used to illustrate the technical solutions described in the present application and not to limit the technical solutions described in the present application. Although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that the skilled in the art can still modify or equivalently replace the present application, and all technical solutions and improvements that do not deviate from the spirit and scope of the present application should be covered within the scope of the claims of the present application.

Claims

1. A thermal management system, comprising a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, and a fluid management device, wherein the fluid management device has a first inlet, a first outlet, a second inlet, a second outlet, and a third outlet, the fluid management device comprises a first valve core, a second valve core, and a block assembly, the first valve core having a first conducting channel, the second valve core having a second conducting channel, the fluid management device having a first throttling chamber, a second throttling chamber, and a gas-liquid separation chamber; the block assembly comprises a first accommodating portion, a second accommodating portion, and a third accommodating portion, the first accommodating portion having a first accommodating chamber, the gas-liquid separation chamber being a part of the first accommodating chamber, the second accommodating portion having a second accommodating chamber, the first valve core and the first throttling chamber being located in the second accommodating chamber, the first valve core being capable of adjusting an opening of the first throttling chamber, the third accommodating portion having a third accommodating chamber, the second valve core and the second throttling chamber being located in the third accommodating chamber, and the second valve core being capable of adjusting an opening of the second throttling chamber; The outlet of the compressor is connected to the first inlet of the fluid management device through the first heat exchanger, the third outlet of the fluid management device is connected to the inlet of the compressor, the first outlet of the fluid management device can be connected to the inlet of the compressor through the second heat exchanger or to the second inlet of the fluid management device, and the second outlet of the fluid management device can be connected to the inlet of the compressor through the third heat exchanger; in the first working mode of the thermal management system, the first valve core makes the first inlet connected to the gas-liquid separation chamber through the first throttling chamber; in the second working mode of the thermal management system, the first valve core makes the first inlet connected to the first port of the second heat exchanger through the first conducting channel, the second port of the second heat exchanger is connected to the second inlet of the fluid management device, and the second valve core makes the second throttling chamber connected to the gas-liquid separation chamber.

2. The thermal management system according to claim 1, characterized in that The fluid management device includes a first valve seat assembly and a second valve seat assembly, the first valve seat assembly having a mating surface that cooperates with the first valve core, the first valve core including a first throttling groove, the first throttling groove having an opening on the outer wall of the first valve core, and the wall forming the first throttling chamber channel includes the first throttling groove and the mating surface of the first valve seat assembly; the second valve seat assembly has a mating surface that cooperates with the second valve core, the second valve core including a second throttling groove, the second throttling groove having an opening on the outer wall of the second valve core, and the wall forming the second throttling chamber channel includes the second throttling groove and the mating surface of the second valve seat assembly.

3. The thermal management system according to claim 1, wherein: The block assembly has a first channel, a second channel, and a third channel. The first channel has a first channel inlet on the side wall of the first accommodating portion, the second channel has a second channel inlet on the bottom wall of the second accommodating portion, and the third channel has a third channel outlet on the side wall of the first accommodating portion. The second channel can communicate with at least one of the second outlet and the first outlet. The first inlet is in communication with the second accommodating cavity, and the second inlet is in communication with the third accommodating cavity. In the first working mode of the thermal management system, the first valve core is in a first working position, the first throttling chamber is connected to the first accommodating chamber and the first channel, and the second channel is connected to the first outlet; in the second working mode of the thermal management system, the first valve core is in a second working position, the first conducting channel is connected to the second accommodating chamber and the first outlet, the second valve core is in the first working position, the second throttling chamber is connected to the third accommodating chamber and the third channel, and the second channel is connected to the second outlet.

4. The thermal management system according to claim 3, characterized in that: The thermal management system further includes at least one of the following operating modes: a third operating mode of the thermal management system: the first valve core is in a third operating position, the first valve core connects the first inlet to the second outlet through the first throttle chamber, and the second port of the second heat exchanger is connected to the inlet of the compressor; In a fourth operating mode of the thermal management system, the first valve core is in a second operating position, the first valve core connects the first inlet to the second outlet through the first throttle chamber, the second port of the second heat exchanger is connected to the second inlet of the fluid management device, and the second valve core is in the second operating position, the second valve core connects the second conducting channel to the second inlet and the second outlet. In a fifth operating mode of the thermal management system, the first valve core is in a first operating position, the first throttling chamber communicates with the first accommodating chamber and the first channel, the second channel communicates with the first outlet, the second port of the second heat exchanger communicates with the second inlet of the fluid management device, and the second valve core is in a second operating position, where the second valve core connects the second conducting channel to the second inlet and the second outlet. The sixth working mode of the thermal management system: the first valve core is in the first working position, the first throttling chamber is connected to the first accommodating chamber and the first channel, the second channel is connected to the second outlet and the first outlet, the second port of the second heat exchanger is connected to the second inlet of the compressor, and the second port of the third heat exchanger is connected to the second inlet of the compressor.

5. The thermal management system according to claim 2, characterized in that: The block assembly has a first channel, a second channel, and a third channel. The first channel has a first channel inlet on the side wall of the first accommodating portion, the second channel has a second channel inlet on the bottom wall of the second accommodating portion, and the third channel has a third channel outlet on the side wall of the first accommodating portion. The second channel can communicate with at least one of the second outlet and the first outlet. The first inlet is in communication with the second accommodating cavity, and the second inlet is in communication with the third accommodating cavity. In the first working mode of the thermal management system, the first valve core is in a first working position, the first throttling chamber is connected to the first accommodating chamber and the first channel, and the second channel is connected to the first outlet; in the second working mode of the thermal management system, the first valve core is in a second working position, the first conducting channel is connected to the second accommodating chamber and the first outlet, the second valve core is in the first working position, the second throttling chamber is connected to the third accommodating chamber and the third channel, and the second channel is connected to the second outlet.

6. The thermal management system according to claim 5, characterized in that: The thermal management system further includes at least one of the following operating modes: a third operating mode of the thermal management system: the first valve core is in a third operating position, the first valve core connects the first inlet to the second outlet through the first throttle chamber, and the second port of the second heat exchanger is connected to the inlet of the compressor; In a fourth operating mode of the thermal management system, the first valve core is in a second operating position, the first valve core connects the first inlet to the second outlet through the first throttle chamber, the second port of the second heat exchanger is connected to the second inlet of the fluid management device, and the second valve core is in the second operating position, the second valve core connects the second conducting channel to the second inlet and the second outlet. In a fifth operating mode of the thermal management system, the first valve core is in a first operating position, the first throttling chamber communicates with the first accommodating chamber and the first channel, the second channel communicates with the first outlet, the second port of the second heat exchanger communicates with the second inlet of the fluid management device, and the second valve core is in a second operating position, where the second valve core connects the second conducting channel to the second inlet and the second outlet. The sixth working mode of the thermal management system: the first valve core is in the first working position, the first throttling chamber is connected to the first accommodating chamber and the first channel, the second channel is connected to the second outlet and the first outlet, the second port of the second heat exchanger is connected to the second inlet of the compressor, and the second port of the third heat exchanger is connected to the second inlet of the compressor.

7. The thermal management system according to any one of claims 1 to 6, characterized in that: The inlet of the compressor includes a first inlet and a second inlet, the third outlet of the fluid management device is in communication with the first inlet of the compressor, the second port of the second heat exchanger is in communication with the second inlet of the compressor, and the second port of the third heat exchanger is in communication with the second inlet of the compressor; The thermal management system further includes a throttling element and a fourth heat exchanger. The throttling element can throttle the refrigerant entering the fourth heat exchanger. The second port of the second heat exchanger can communicate with the second inlet of the compressor through the throttling element and the fourth heat exchanger.

8. The thermal management system according to claim 7, characterized in that: The block assembly includes a second channel portion, the second channel portion has the second channel, the second channel portion includes a first sub-portion, a second sub-portion, and a third sub-portion, the channel corresponding to the first sub-portion has an entrance to the second channel on the bottom wall of the first accommodating portion, the channel corresponding to the second sub-portion has an opening in the first sub-portion, the channel corresponding to the second sub-portion is communicated with the first outlet, the channel corresponding to the third sub-portion has an opening in the first sub-portion, and the channel corresponding to the second sub-portion is communicated with the second outlet; The second channel portion includes a throttling portion, which is at least a part of the first sub-portion, or the throttling portion includes a first throttling portion and a second throttling portion, the first throttling portion is at least a part of the first sub-portion, and the second throttling portion is at least a part of the second sub-portion, and the aperture range of the throttling portion is 1.0-2.0 mm.

9. The thermal management system according to claim 8, characterized in that: The fluid management device further includes a third valve core, a first one-way valve component and a second one-way valve component, the first one-way valve component being located in the second sub-portion, the first throttling portion being closer to the inlet of the second channel than the first one-way valve component, and the second throttling portion being closer to the inlet of the second channel than the second one-way valve component, the block assembly having a mounting hole, the mounting hole being closer to the inlet of the second channel than the second one-way valve portion, at least a portion of the third valve core being located in the mounting hole, the third sub-portion being in communication with the mounting hole, and the third valve core being capable of opening and closing the third sub-portion.

10. The thermal management system according to claim 9, characterized in that: The block assembly includes a second channel portion, the second channel portion has the second channel, the second channel has an outlet in the block assembly, the second channel portion includes a throttling portion, the aperture range of the throttling portion is 1.0-2.0 mm; the thermal management system includes a first switching valve and a second switching valve, the second channel outlet is connected to the first port of the second heat exchanger through the second switching valve, and the second channel outlet is connected to the first port of the third heat exchanger through the second switching valve.

11. The thermal management system according to claim 9 or 10, characterized in that: The thermal management system is applied to a vehicle, the first heat exchanger and the third heat exchanger are arranged in an air-conditioning box of the vehicle, and the third heat exchanger is arranged upwind of the first heat exchanger; Alternatively, the first heat exchanger includes a refrigerant flow channel and a coolant flow channel, the refrigerant flow channel of the first heat exchanger is connected to the outlet of the compressor, and the heat exchanger connected to the coolant flow channel of the first heat exchanger is located in the air-conditioning box of the vehicle; and / or, the third heat exchanger includes a refrigerant flow channel and a coolant flow channel, the refrigerant flow channel of the third heat exchanger is connected to the inlet of the compressor, and the heat exchanger connected to the coolant flow channel of the third heat exchanger is located in the air-conditioning box of the vehicle.

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