CN113804028A - Thermal management device and thermal management system - Google Patents

Abstract

The invention discloses a heat management device and a heat management system, wherein the heat management device comprises a first heat exchange part and a second heat exchange part, the first heat exchange part and the second heat exchange part are formed by stacking plates between a first plate body and a second plate body, the first heat exchange part is used for heat exchange between a refrigerant and a refrigerant, the second heat exchange part is used for heat exchange between the throttled refrigerant and cooling liquid, a throttling unit is fixed with the first plate body positioned at the second heat exchange part, part of the throttling unit is positioned at a first pore channel of the first heat exchange part, and a valve port is positioned between the first pore channel and the second pore channel.

Description

Thermal management device and thermal management system

Technical Field

The invention relates to the technical field of thermal management.

Background

The intermediate heat exchanger, the plate evaporator and the expansion valve in the heat management system are communicated through pipelines, or the plate evaporator and the expansion valve are integrated, and the intermediate heat exchanger is still connected with the integrated plate evaporator through the pipelines.

Disclosure of Invention

The application aims to provide a thermal management device and a thermal management system so as to be beneficial to miniaturization of the thermal management device.

In one aspect, an embodiment of the technical solution of the present invention provides a thermal management device, including a throttling unit and a heat exchange core, where the heat exchange core includes a plurality of stacked plates, a first plate and a second plate, and the plates are located between the first plate and the second plate along a stacking direction of the plates; the heat exchange core comprises a first heat exchange part and a second heat exchange part, the first heat exchange part comprises the first plate body, the second heat exchange part comprises the second plate body, the heat management device comprises a refrigerant flow channel and a cooling liquid flow channel, the cooling liquid flow channel is formed in the second heat exchange part, the refrigerant flow channel comprises a first flow channel, a second flow channel and a third flow channel, the first flow channel and the second flow channel are formed in the first heat exchange part, the third flow channel is formed in the second heat exchange part, the refrigerant in the first flow channel and the refrigerant in the second flow channel can exchange heat in the first heat exchange part, and the refrigerant in the third flow channel and the cooling liquid in the cooling liquid flow channel can exchange heat in the second heat exchange part;

the throttling unit comprises a first valve body, the throttling unit is provided with a valve port, the third flow channel comprises a first hole channel, the first hole channel comprises a second hole channel, part of the throttling unit is positioned in the second hole channel along the axial direction of the first hole channel, the valve port is positioned in the first hole channel or the second hole channel or between the first hole channel and the second hole channel, and the second hole channel can be communicated with the first hole channel through the valve port.

In another aspect, another embodiment of the present disclosure provides a thermal management system, including a thermal management device, a compressor, a condenser, the thermal management device as described above, the thermal management device including a first inlet, a first outlet, a second outlet, and a second inlet, the outlet of the compressor being in communication with the first inlet through the condenser, the first outlet being in communication with the inlet of the compressor, the thermal management system further including a first heat exchanger and a pump, the second outlet of the thermal management device being in communication with the second inlet through the first heat exchanger and the pump.

The heat management device provided by the above embodiment of the application includes a first heat exchanging portion and a second heat exchanging portion, the first heat exchanging portion and the second heat exchanging portion are formed by stacking plates between a first plate body and a second plate body, the first heat exchanging portion is used for heat exchange between refrigerant and refrigerant, the second heat exchanging portion is used for heat exchange between the throttled refrigerant and cooling liquid, the throttling unit is fixed to the first plate body, part of the throttling unit is located in the first duct, and the valve port is located between the first duct and the second duct.

Drawings

FIG. 1 is a schematic block diagram of a connection of a thermal management system;

FIG. 2 is a schematic block diagram of another connection of a thermal management system;

FIG. 3 is a schematic perspective view of a first embodiment of a thermal management device;

FIG. 4 is a schematic view of the partially exploded perspective structure of FIG. 3 from a first perspective;

FIG. 5 is a perspective view from a second perspective of the partial explosion of FIG. 3;

FIG. 6 is a schematic top view of FIG. 3;

FIG. 7 is a schematic view of a first cross-sectional configuration taken along line A-A of FIG. 6;

FIG. 8 is a schematic cross-sectional view taken along line B-B of FIG. 6;

FIG. 9 is a perspective view of a second valve body;

FIG. 10 is an enlarged schematic view of portion A of FIG. 7;

FIG. 11 is an enlarged schematic view of the portion B of FIG. 7;

FIG. 12 is a schematic perspective view of a second embodiment of a thermal management device;

FIG. 13 is a second enlarged view of portion A;

FIG. 14 is a schematic view of another cross-sectional configuration taken along line A-A of FIG. 6;

fig. 15 is a plate structure diagram of the second heat exchanging portion in fig. 14;

FIG. 16 is an enlarged schematic view of portion A of FIG. 14;

FIG. 17 is a schematic cross-sectional view A-A of a third embodiment of a thermal management device;

FIG. 18 is a first enlarged view of portion B of FIG. 17;

FIG. 19 is a schematic view of the enlarged structure of the part B;

FIG. 20 is a schematic view of a fifth enlarged structure of the portion B;

FIG. 21 is a schematic perspective view of a fourth embodiment of a thermal management device;

FIG. 22 is a schematic cross-sectional view of FIG. 21;

FIG. 23 is a schematic cross-sectional view of a thermal management device;

FIG. 24 is a schematic view of the connection of the tube to the first and second walls.

Detailed Description

The thermal management system and the thermal management device according to the technical scheme of the invention can be implemented in various ways, at least one of which can be applied to a vehicle thermal management system, and at least one of which can be applied to other thermal management systems such as a household thermal management system or a commercial thermal management system, and the following description will take the vehicle thermal management system and the thermal management device as an example and be combined with the accompanying drawings.

Please refer to fig. 3-11. The thermal management device 1000 comprises a heat exchanging core comprising a plurality of stacked plates, a first plate body 1140 and a second plate body 1210, which plates are located between the first plate body 1140 and the second plate body 1210 in a stacking direction of the plates, and a throttling unit 1300. Specifically, the heat exchange core includes a first heat exchange portion 1100, a connecting plate body 1400 and a second heat exchange portion 1200, in this embodiment, the first plate body 1140 is a part of the first heat exchange portion 1100, the second plate body 1210 is a part of the second heat exchange portion 1200, the first heat exchange portion 1100 further includes a top plate, and a plurality of plates of the first heat exchange portion 1100 are stacked from the first plate body 1140 to the top plate. The second heat exchanging part 1200 further includes a bottom plate, and a plurality of plates of the second heat exchanging part 1200 are stacked from the bottom plate to the second plate body 1210. The connecting plate 1400 is located between the top plate and the bottom plate and is welded and fixed with the top plate and the bottom plate. In another embodiment, the top plate and the bottom plate may not be provided, and the connection plate may be directly welded and fixed to the plate of the first heat exchanging portion 1100 and the plate of the second heat exchanging portion 1200. It should be noted that, for convenience of description, the second heat exchanging part 1200 is defined to be located above the first heat exchanging part 1100. Of course, a connecting plate body may not be provided, the heat exchanging core is a set of structure, the heat exchanging core includes a first plate 1140 and a second plate 1210, and a plurality of stacked plates located between the first plate 1140 and the second plate 1210 along the stacking direction of the plates, the plates are located between the first plate 1140 and the second plate 1210 along the stacking direction of the plates, and a plurality of plates are stacked from the first plate 1140 to the second plate 1210, or a plurality of plates are stacked from the second plate 1210 to the first plate 1140.

The first heat exchange portion 1100 and the second heat exchange portion 1200 each include a plurality of stacked plates, and the plate structures may be the same, and the structure of the first heat exchange portion 1100 will be described as an example. In the first heat exchanging portion 1100, adjacent plates are stacked to form a first inter-plate flow channel and a second inter-plate flow channel, except for two plates closest to the first plate 1140 and the top plate, one side of the inner plate is a first inter-plate flow channel, and the other side is a second inter-plate flow channel. The fluid of the first plate interspaces may be heat exchangeable with the fluid of the second plate interspaces. It should be noted that the first inter-plate flow channels and the second inter-plate flow channels are not communicated relatively, which means that they are not communicated inside the first heat exchanging part 1100, and there may be a communication situation after the thermal management device 1000 becomes a part of the thermal management system. The thickness of the body portion of the connecting plate, top plate, and bottom plate described herein is greater than the thickness of the body portion of the sheet, and serves to enhance the mechanical strength of the thermal management device.

The thermal management device 1000 has a refrigerant flow channel, a coolant flow channel, a first inlet 1001, a first outlet 1002, a second inlet 1003 and a second outlet 1004, the refrigerant flow channel connects the first inlet 1001 and the first outlet 1002, that is, the first inlet 1001 is an inlet of the refrigerant flow channel, and the first outlet 1002 is an outlet of the refrigerant flow channel; the coolant flow passage communicates with a second inlet 1003 and a second outlet 1004, the second inlet 1003 being an inlet of the coolant flow passage, and the second outlet 1004 being an outlet of the coolant flow passage. Wherein the second outlet 1004, the second inlet 1003 and the coolant flow channel are formed in the second heat exchanging part 1200, the first outlet 1002 and the first inlet 1001 are formed in the first heat exchanging part 1100, the second outlet 1004 and the second inlet 1003 are located on one side of the heat managing device 1000, and the first outlet 1002 and the first inlet 1001 are located on the opposite side of the heat managing device 1000 in the stacking direction of the slabs. The first inlet 1001 and the first outlet 1002 may be formed as a nipple or a protrusion fixedly connected to the first plate body, the second inlet 1003 and the second outlet 1004 may be formed as a nipple or a protrusion fixedly connected to the first plate body, and in other embodiments, the first inlet 1001 and the first outlet 1002 may be formed as the first plate body, and the second inlet 1003 and the second outlet 1004 may be formed as the first plate body.

Referring to fig. 7 and 8, the refrigerant flow channel includes a first flow channel, a second flow channel and a third flow channel, the first flow channel and the second flow channel are formed in the first heat exchanging portion 1100, the first inter-plate flow channel of the first heat exchanging portion 1100 is a part of the first flow channel, and the second inter-plate flow channel of the first heat exchanging portion 1100 is a part of the second flow channel.

The first heat exchanging portion 1100 has at least a fifth porthole 1160, a second porthole 1120, a third porthole 1130, and a fourth porthole 1150, which extend in the plate stacking direction of the first heat exchanging portion. The first flow channel comprises a fifth channel 1160, first plate-to-plate channels between the plates and a second channel 1120, and the first plate-to-plate channels of the first heat exchanging part 1100 are communicated with the fifth channel 1160 and the second channel 1120. In this embodiment, the first inlet 1001 is communicated with the fifth channel 1160, the refrigerant enters the fifth channel 1160 from the first inlet 1001, then enters the first inter-plate channel of the first heat exchanging part, and enters the second channel 1120 after exchanging heat with the refrigerant in the second inter-plate channel of the first heat exchanging part, the second channel 1120 has an opening on the top plate of the first heat exchanging part, and the refrigerant exits the first heat exchanging part 1100 through the opening of the top plate of the first heat exchanging part. The second flow channel comprises third portholes 1130, second plate-to-plate channels between the plates and fourth portholes 1150, and the second plate-to-plate channels of the first heat exchanging part 1100 communicate the third portholes 1130 and the fourth portholes 1150. The first outlet 1002 is communicated with the fourth orifice 1150, that is, the refrigerant in the second flow channel enters the second inter-plate channel of the first heat exchanging part 1100 from the third orifice 1130 to exchange heat with the refrigerant in the first inter-plate channel, and then enters the fourth orifice 1150, and the refrigerant in the fourth orifice 1150 is discharged from the heat management device through the first outlet 1002.

The first inter-plate flow channels of the second heat exchanging part 1200 are part of the third flow channels, and the second inter-plate flow channels of the second heat exchanging part 1200 are part of the coolant flow channels. The second heat exchanging part 1200 includes at least a first hole passage 1240, a sixth hole passage 1230, a seventh hole passage 1260 and an eighth hole passage 1270, wherein the first hole passage 1240 and the sixth hole passage 1230 are a part of the third flow passage, and the seventh hole passage 1260 and the eighth hole passage 1270 are a part of the cooling liquid flow passage. The third flow channel comprises a first channel 1240 and a sixth channel 1230, and is located in the first inter-plate flow channel of the second heat exchange portion 1200, and the first inter-plate channel of the second heat exchange portion 1200 is communicated with the first channel 1240 and the sixth channel 1230. The coolant flow channels comprise seventh portholes 1260, second plate interspaces in the second heat exchanging part 1200 and eighth portholes 1270, the second plate interspaces of the second heat exchanging part 1200 communicating with the seventh portholes 1260 and the eighth portholes 1270. In this embodiment, the second inlet 1003 is communicated with the seventh bore 1260, the second outlet 1004 is communicated with the eighth bore 1270, and the cooling liquid enters the seventh bore 1260 from the second inlet 1003, then enters the second inter-plate channel of the second heat exchanging part 1200, exchanges heat with the refrigerant in the third flow channel, enters the eighth bore 1270, and is discharged out of the heat management device from the second outlet 1004.

Along the plate stacking direction, the connection plate body 1400 is located between the first heat exchange portion 1100 and the second heat exchange portion 1200, specifically, the first heat exchange portion 1100 includes a first wall 1110, and the second heat exchange portion 1200 includes a second wall 1220, in this embodiment, the first wall 1110 is formed on the top plate of the first heat exchange portion 1100, the second wall 1220 is formed on the bottom plate of the second heat exchange portion 1200, the lower side wall of the connection plate body 1400 is welded and fixed to the first wall 1110, and the upper side wall of the connection plate body 1400 is welded and fixed to the second wall 1220. The first wall 1110 and the second wall 1220 are oppositely disposed, and the relative disposition described herein includes an indirect relative disposition and a direct relative disposition, and the indirect relative disposition means that there is another object between the first wall 1110 and the second wall 1220, such as the connection plate 1400, and the connection plate 1400 may not be disposed between the first wall 1110 and the second wall 1220, that is, the first wall and the second wall are directly oppositely disposed, and the first wall and the second wall are welded and fixed. The connecting plate body 1400 further includes a first through hole 1410 and a second through hole 1420, the first through hole 1410 and the second through hole 1420 penetrate the connecting plate body 1400 and have openings at the upper wall and the lower wall of the connecting plate body 1400, respectively, and the second through hole 1420 communicates the sixth orifice 1230 with the third orifice 1130, that is, the second through hole 1420 communicates the third flow passage with the second flow passage. Specifically, the sixth aperture 1230 has a second opening 1231 in the second wall, the second opening 1231 at least partially facing the second through hole 1420 and communicating with the second through hole 1420. The third bore 1130 has a first opening 1131 at the first wall, the first opening 1131 facing at least partially toward the second through hole 1420, the first opening 1131 communicating with the second opening 1231 through the second through hole 1420, such that the third bore 1130 communicates with the sixth bore 1230 through the second through hole 1420. In this embodiment, the first opening 1131 and the second opening 1231 are disposed in a staggered manner, and the second through hole extends in a long and narrow manner, which is beneficial to smooth the circulation of the refrigerant at the second through hole, and of course, the first opening 1131 and the second opening 1231 may be disposed opposite to each other. The refrigerant of the third flow passage exchanges heat with the coolant of the coolant flow passage in the second heat exchanging portion 1200, and then enters the second flow passage of the first heat exchanging portion through the second through holes 1420, and then exchanges heat with the refrigerant of the first flow passage in the first heat exchanging portion 1100.

The first through hole 1410 communicates with the second hole 1120, and specifically, the second hole 1120 forms a first communication hole 1121 at the first wall 1110, the first communication hole 1121 at least partially facing the first through hole 1420 and communicating with the first through hole 1420. Of course, the first wall 1110 is hermetically provided at the corresponding position of the connection plate body 1400 to prevent the refrigerant from leaking from the connection of the first heat exchanging part 1100 and the connection plate body 1400, and the second wall 1220 is hermetically provided at the corresponding position of the connection plate body 1400 to prevent the refrigerant from leaking from the connection of the second wall and the connection plate body 1400. In addition, in this embodiment, the connecting plate body 1400 further includes two square holes 1430, and the square holes 1430 serve to reduce the weight of the connecting plate body 1400, thereby reducing the weight of the thermal management device 1000; the two square holes 1430 are larger than the first through hole and the second through hole, and the square holes 1430 also have less heat conduction between the first heat exchange part 1100 and the second heat exchange part 1200; the two square holes 1430 are located near the middle of the connecting plate body 1400, and the middle of the first heat exchanging part 1100 and the second heat exchanging part 1200 has a large temperature difference, so that heat conduction is reduced, and the mass distribution of the heat management device is balanced.

Referring to fig. 7 and 10, the throttle unit 1300 includes a valve core, a valve port portion 1350 and a valve seat 1370, the valve port portion 1350 being formed with a valve port 1351. In this embodiment, the valve element is a valve needle 1320, and the valve needle 1320 can move relative to the valve port portion 1350, thereby adjusting the opening degree of the valve port 1351. The throttle unit 1300 further includes a transmission mechanism, a stator, a rotor, and a guide 1380, the transmission mechanism is a screw transmission mechanism, the screw transmission mechanism includes a movable portion and a fixed portion, one of the movable portion and the fixed portion includes a screw, the other includes a nut screw-engaged with the screw, the movable portion is assembled with the valve needle 1320, and the fixed portion can be directly or indirectly fixed with the valve seat 1370; the guide portion 1380 is fixed to the valve seat 1370, and the guide portion 1380 can guide the needle and prevent the axial movement of the needle from deviating. The valve port 1350 is fixedly connected to the guide 1380, and in the present embodiment, the valve port 1350 and the guide 1380 are integrally provided, and the valve needle 1320 and the valve port 1351 are substantially coaxial. The stator is electrically connected with a control circuit for controlling the stator, an excitation magnetic field generated by the stator can drive the rotor to rotate when the stator is electrified, the valve needle is further driven to move through the thread transmission mechanism, when the rotor rotates, the screw rod can rotate and move axially relative to the nut under the driving of the rotor due to the action of the thread pitch, and the valve needle is relatively fixed on the screw rod, so that the valve needle can move axially along with the screw rod, and further, the gap between the valve needle 1320 and the valve port 1351 is increased or decreased, and further, the throttling of the refrigerant is realized.

The throttle unit 1300 further includes a first valve body 1310 and a connecting body 1340, the first valve body 1310 includes a first through hole 1311, the first through hole 1311 has an opening on the upper wall of the first valve body 1310, the first through hole 1311 has a third opening 1312 on the bottom wall of the first valve body 1310, the bottom wall of the first valve body 1310 and the second plate body 1210 are relatively fixed and can be welded, bonded or screwed, the second plate body 1210 has a fourth opening 1211, the fourth opening 1211 is communicated with the first duct 1240, the third opening 1312 and the fourth opening 1211 are oppositely arranged, the third opening 1312 is communicated with the fourth opening 1211, and the third opening 1312 is communicated with the first duct 1240. The valve seat 1370 extends into the cavity formed by the first through hole 1311 and is fixed to the wall of the first through hole 1311, wherein the valve seat 1370 is screwed or inserted or welded to the wall of the first through hole 1311, and the valve seat 1370 is relatively close to the upper wall of the first valve body compared to the bottom wall of the first valve body 1310. At least a part of the connecting body 1340 is extended into the cavity formed by the first through hole 1311 and fixed to the wall of the first through hole 1311, and in this embodiment, the first through hole 1311 is formed with a step surface to which the connecting body 1340 is fixed. The connecting body 1340 is relatively close to the lower wall of the first valve body compared to the upper wall of the first valve body. The space between the valve seat 1370 and the connecting body 1340 forms a valve chamber 1330 along the extension direction of the first through hole 1311, and when the valve needle opens the valve port 1351, the valve port 1351 is communicated with the valve chamber 1330.

Referring to fig. 9 and 10, the connecting body 1340 includes a communicating portion 1342, a fixing portion 1343 and an accommodating portion 1341, wherein the fixing portion 1343 is fixed to a wall of the first through hole 1311, in the present embodiment, the throttle unit 1300 further includes a supporting ring 1360, the supporting ring 1360 is located in the first through hole 1311, the supporting ring is screwed to the first valve element 1310, and the fixing portion 1343 of the connecting body is further limited with respect to a step surface of the first valve element. In another embodiment, one end of the supporting ring 1360 abuts against the second plate body 1210, the other end of the supporting ring 1360 abuts against the fixing portion 1343 of the connecting body, and the supporting ring 1360 fixes the connecting body 1340 to the step surface of the first valve body 1310 during welding, thereby preventing the connecting body 1340 from wobbling. The accommodating portion 1341 is formed with an accommodating cavity, at least a portion of the valve port 1350 is located in the accommodating cavity of the accommodating portion 1341, and an outer wall of the valve port 1350 is disposed between inner walls of the accommodating portion 1341 in a sealing manner, for example, a sealing ring is disposed between the outer wall of the valve port 1350 and the inner wall of the accommodating portion 1341.

The refrigerant flow channel further comprises a fourth flow channel, in the embodiment, the fourth flow channel is located in the heat exchange core, and the fourth flow channel is used for communicating the first flow channel with the third flow channel. Specifically, the third flow channel includes a first hole 1240, the first flow channel includes a second hole 1120, at least a portion of the fourth flow channel is located in the first hole 1240, one end of the fourth flow channel is communicated with the second hole 1120, and the other end of the fourth flow channel is communicated with the valve port 1351 of the throttling unit 1300, so that the refrigerant in the first heat exchanging part 1100 can enter the valve port 1351 of the throttling unit through the fourth flow channel.

The thermal management device 1000 includes a tube 1500, the tube 1500 is hollow, both ends of the tube 1500 are open, most of the tube 1500 is located in the first hole 1240, or the first hole 1240 receives the tube 1500, specifically, the first plate of the second heat exchanging portion includes a first port 1204, the plurality of first ports 1204 form the first hole, and along a radial direction of the first hole 1240, the first hole 1240 is located on a circumferential side of the tube 1500, or the first port receives at least a part of the fourth flow channel. In the axial direction of the first bore 1240, at least a portion of the tube 1500 is located between the valve port 1351 and the second wall 1220, the first end of the tube 1500 is located in the first aperture 1410, and the outer wall of the first end of the tube 1500 is sealingly fixed to the inner wall of the first aperture 1410, so that the cavity of the first aperture 1410 is communicated with the cavity of the tube 1500, and thus the first flow channel is communicated with the cavity of the tube 1500. It can be appreciated that the second wall 1220 of the second heat exchanging part 1200 has an opening for receiving the tube body 1500. In this embodiment, the fourth flow passage includes a cavity of the pipe body 1500, that is, the fourth flow passage is a part of the refrigerant flow passage and can communicate the first flow passage with the valve port 1351 of the throttle unit. The second end of the pipe body 1500 is located in the accommodating cavity of the accommodating portion 1341, and the outer wall of the second end is fixed to the inner wall of the accommodating portion 1341 in a sealing manner, which may be welding sealing.

Along the extending direction of the first through hole 1311, the second end of the pipe body 1500 is closer to the second heat exchanging portion 1200 than the valve port portion 1350, the valve port portion 1350 is relatively close to the valve seat 1370, and the opening of the pipe body 1500 faces the valve port 1351, so that the cavity of the pipe body 1500 communicates with the valve port 1351. The communication portion 1342 is located between the fixing portion 1343 and the accommodating portion 1341 in the radial direction of the first through hole 1311, and the communication portion 1342 communicates the valve chamber 1330 and the first bore 1240, and in the present embodiment, the communication portion is a hole that penetrates the connecting body 1340. When the thermal management device 1000 is in operation, the refrigerant passing through the tube 1500 is throttled at the valve port 1351, flows into the valve chamber 1330, and then enters the first bore 1240 through the connecting portion 1343, i.e., enters the third flow channel. In this embodiment, the connecting body 1340 is integrally formed by stamping a plate, and has a substantially trumpet shape, and in other embodiments, the fixing portion of the connecting body 1340 may be fixed between the second plate 1210 and the first valve body 1310, or the fixing portion is accommodated in the fourth opening 1211 and fixed to the inner wall of the fourth opening 1211, so that a support ring is not required, and the number of parts and assembly processes is relatively reduced. It should be noted that the fourth opening 1211 is a passage of the valve chamber communicating with the first bore 1240. The connecting body 1340 may also include only the receiving portion 1341, at least a portion of the valve port 1350 is located in a cavity formed by the receiving portion, a sidewall of the valve port 1350 is fixed in a sealing manner to an inner wall of the receiving portion 1341, the first end of the tube 1500 is located in the cavity formed by the receiving portion 1341 or the receiving portion 1341 is located in the first end, and a wall of the first end and a wall of the receiving portion 1341 are fixed in a sealing manner, typically by welding.

Referring to fig. 11 and 10, the second heat exchanging part 1200 includes a first partition plate 1280, the first partition plate 1280 and a plate of the second heat exchanging part are integrated, the first partition plate 1280 forms a bottom wall of the first hole 1240 along an axial direction of the first hole 1240, the first partition plate 1280 includes a through hole for receiving the tube 1500, a wall of the through hole of the first partition plate 1280 is fixed to a wall of the tube 1500, and the through hole of the first partition plate 1280 is hermetically disposed between the wall of the through hole of the first partition plate 1280 and the wall of the tube 1500. In addition, the second heat exchanging portion 1200 further includes a second partition plate 1281, the second partition plate 1281 is closer to the throttling unit than the first partition plate 1280, the second partition plate 1281 is located in the first hole 1240, the second partition plate 1281 and a plate integrated structure of the second heat exchanging portion, the second partition plate 1281 also has a through hole for accommodating the pipe body, the wall of the through hole of the second partition plate 1281 and the outer wall of the pipe body are hermetically disposed, so the second partition plate 1281 can change the flow direction of the refrigerant, and the second heat exchanging portion 1200 has a plurality of flows.

Referring to fig. 7 and 8, the operation of the thermal management device 1000 is described in conjunction with the thermal management system illustrated in fig. 1. The thermal management system comprises a compressor 100, a condenser 200 and a thermal management device 1000, wherein an outlet of the compressor 100 is communicated with a first inlet 1001 of the thermal management device through the condenser 200, and a first outlet 1002 of the thermal management device is communicated with an inlet of the compressor 100. The thermal management system further comprises a first heat exchanger 400 and a pump 300, wherein a second inlet 1003 of the thermal management device is communicated with a second outlet 1004 of the thermal management device through the first heat exchanger 400 and the pump 300, or further, a coolant flow channel of the thermal management device 1000, the first heat exchanger 400 and the pump 300 form a coolant system or a part of the coolant system, and coolant of the coolant system flows in the coolant system under the driving of the pump 300. When the thermal management system works, high-temperature and high-pressure refrigerant releases heat in the condenser 200, relatively low-temperature and high-pressure refrigerant enters a refrigerant flow channel of the thermal management device 1000, namely a first flow channel of the first heat exchange portion 1100, then enters a cavity of the tube body 1500, the refrigerant is throttled and depressurized through the valve port 1351, enters the valve cavity 1330, then enters the first hole channel 1240, namely a third flow channel, the refrigerant absorbs heat of cooling liquid in the third flow channel, reduces the temperature of the cooling liquid, then enters the sixth flow channel 1230, and the refrigerant in the third flow channel enters a second flow channel through the second through hole 1420 of the connecting plate body 1400, and then is discharged out of the thermal management device 1000 through the first outlet 1002. The refrigerant in the second flow channel and the refrigeration in the first flow channel can exchange heat in the first heat exchange portion 1100, so that the temperature of the refrigerant in the first flow channel is further reduced, the temperature of the refrigeration in the second flow channel is increased, and the reduction of liquid impact of the compressor is facilitated. The temperature of the coolant in the coolant flow path is reduced and then enters the first heat exchanger 400 for reducing the temperature of the battery or other equipment. The heat management device 1000 comprises two heat exchange parts, the two heat exchange parts are fixed through a connecting plate body 1400, a first heat exchange part 1100 is used for refrigerant-refrigerant heat exchange, a second heat exchange part 1200 is used for refrigerant-cooling liquid heat exchange, the refrigerant of the first heat exchange part 1100 is communicated with a throttling unit 1300 through a pipe body 1500, the pipe body 1500 is arranged in a heat exchange core body, the throttling unit 1300 is fixed with a second plate body of the second heat exchange part 1200, the throttled refrigerant is in heat exchange with the cooling liquid at the second heat exchange part, the temperature of the cooling liquid is reduced, and the length of the heat management device in the stacking direction of the plates is relatively reduced after the pipe body 1500 is arranged in the second heat exchange part 1200. A heat exchange core is placed in to body for communicateing first heat transfer portion 1100 and throttle unit 1300, not only can further reduce thermal management device 1000's volume, can also effectively reduce the harm of external to the body to do benefit to the life-span that improves thermal management device.

Referring to fig. 2 and 12, fig. 2 illustrates another embodiment of a thermal management system. In this embodiment, in contrast to the embodiment of fig. 1, the thermal management device further comprises a third outlet 1005 and a third inlet 1006, wherein the third outlet 1005 communicates with the second port 1120. In short, the refrigerant in the second port may enter the throttling unit 1300 through the pipe body 1500, or may be discharged from the third outlet 1005, and the third inlet 1006 communicates with the third port 1130, that is, the refrigerant flowing into the third port includes both the refrigerant flowing from the second heat exchanging portion and the refrigerant flowing from the third inlet 1006. Compared with the thermal management system illustrated in fig. 1, the refrigerant in the first flow channel of the thermal management device 1000 may enter the throttling unit 1300 through the pipe body 1500, or enter the throttling element 500 through the third outlet 1005, the throttling element 500 enters the second heat exchanger 600 to absorb external heat after being throttled, and then the refrigerant enters the first heat exchanging portion 1100 of the thermal management device through the third inlet 1006, and finally is discharged through the first outlet 1002 and enters the compressor 100. The thermal management device 1000 adds an inlet and an outlet to the first heat exchanging portion 1100, that is, the second heat exchanger 600 can be connected to the thermal management system as a newly added evaporator, and the integration level of the thermal management device is higher.

Referring to fig. 13, fig. 13 is a schematic view of a thermal management device that does not include the connector 1340. The cavity formed by the first end of the valve body 1500 accommodates at least a portion of the valve port 1350, and a sidewall of the valve port 1350 is sealingly disposed with a wall of the first end. Of course, in other modes, the valve port portion 1350 includes a communication cavity, the valve port 1351 is located above the communication cavity, the valve port 1351 is communicated with the communication cavity, the first end of the tube 1500 is located in the communication cavity, and the outer wall of the first end of the tube 1500 is fixedly connected to the wall of the communication cavity and sealed at the connection. Thus, the valve port communicates with the lumen of the body. Because the connecting body 1340 is not arranged, the throttled refrigerant directly enters the first hole channel after entering the valve cavity, so that not only are parts reduced, but also the installation steps are reduced.

The valve port 1350 and the first end of the pipe 1500 shown in fig. 13 are located in the first through hole 1311 of the first valve body, and the valve port 1350 and the first end of the pipe 1500 may be located in the first hole after being fixed, so that the length of the first valve body can be reduced along the radial direction of the first hole 1240, and the volume of the thermal management device is relatively small.

Referring to fig. 24, the thermal management device may also not include the connecting plate 1400, the second channel 1120 forms a first communicating port 1111 in the first wall 1110, the first communicating port 1111 communicates with the second channel, in a specific embodiment, the second end of the tube 1500 is located at the first communicating port 1111, and an outer wall of the second end of the tube 1500 is sealed with an inner wall of the first communicating port 1111, so that the refrigerant of the second channel 1120 can enter the cavity of the tube; the second wall has a second communication port 1221, the second communication port 1221 accommodates the tube body 1500, and the first partition 1280 may be a portion of the second wall 1220 or a portion of a plate adjacent to the second wall 1220, so that the refrigerant of the first channel does not leak between the first heat exchanging portion and the second heat exchanging portion. Of course, to increase the sealing surface of the tube with the wall of the first communication opening 1111, the wall of the first communication opening 1111 may be a protrusion from the body of the first wall 1110. Compared to a thermal management device having a connection plate 1400, this embodiment is lighter in weight and smaller in volume.

Referring to fig. 14-16, in contrast to the embodiment illustrated in fig. 7, the thermal management device is not separately provided with a tube body 1500, the first plate of the second heat exchange portion 1200 includes a first port 1204 and at least one second port 1205, the wall forming the first port 1204 includes a first flange 1290, the first flange 1290 is folded over from the main body of the first plate of the second heat exchange portion 1200 toward the throttling unit 1300, the plurality of first plates are stacked, the first flange 1290 is inserted into the first flange on the upper side adjacent thereto and is sealingly disposed between two adjacent flanges, the inner wall of the first flange 1290 of the plurality of plates forms the wall of the fourth flow channel, the first flange 1290 adjacent to the valve port 1350 is partially disposed in the receiving cavity, such that the fourth flow channel is in communication with the valve port 1351, and the first flange 1290 adjacent to the valve port 1350 is sealingly disposed between the wall of the receiving portion 1341. Radially of the first porthole, four second portholes 1205 are distributed outside the first porthole 1204, while the second portholes 1205 form a first porthole 1240. In other embodiments, at least one second aperture is included in each plate. The opening of the first valve body 1310 faces the first bore 1240, enabling communication between the valve chamber 1330 and the first bore 1240. In other embodiments, the connecting body 1340 can be inserted into the inner wall of the first flange 1290 and sealed. When the throttle unit 1300 does not include the connecting body 1340, the valve port portion 1350 may be directly and hermetically fixed to the inner wall or the outer wall of the first flange 1290, so as to communicate the valve port with the fourth flow channel. It can be known that in the plate of the second heat exchanging part, the plate closest to the first heat exchanging part includes the first port and the first partition 1280, and does not include the second port, and the first partition 1280 is the bottom wall of the first port.

Please refer to fig. 17 and fig. 18. In contrast to the first embodiment illustrated in fig. 3, the first valve body 1310 of the throttling unit 1300 is fixed to the first plate 1140, the valve port 1350 is located between the first aperture 1240 and the second aperture 1120, and the thermal management device is not additionally provided with a fourth flow passage. The first valve body 1310 is fixed to the first plate 1140 by welding, screwing, or bonding, and the first heat exchanging part 1100 has a space for accommodating the throttling unit 1300. In other embodiments, the valve port may be located in the second orifice or the first orifice, and will not be described in detail. In this embodiment, the first plate body includes a through hole through which the partial throttle unit passes; the guide portion 1380 is integrally formed with the valve port portion 1350, the guide portion 1380 is accommodated in the second port 1120, and the guide portion 1380 has a passage communicating the second port 1120 and the valve port 1351; along the axial direction of the first hole, the valve port portion 1350 is received in the first through hole 1410 and is arranged in a sealing manner with the wall of the first through hole, and when the valve needle opens the valve port 1351, the second hole 1120 is communicated with the first hole 1240 through the valve port 1351, that is, the first flow passage is communicated with the third flow passage through the valve port 1351.

The thermal management device 1000 includes a first sealing surface 1352 and a second sealing surface 1353, wherein the first sealing surface 1352 is formed on the outer sidewall of the valve port portion 1350, the second sealing surface is located on the connecting plate body 1400, and a sealing element is provided between the first sealing surface 1352 and the second sealing surface 1353 to achieve sealing between the first sealing surface 1352 and the second sealing surface 1353, although the first sealing surface and the second sealing surface may also be surface sealing, such as by finishing the sealing surfaces to a certain precision. The seal may be a gasket or solder or other material capable of achieving a seal. The thermal management device 1000 provides a first sealing surface 1352 and a second sealing surface 1353 such that refrigerant in the second port can only flow into the first port 1240 through the valve port.

The first wall 1110 includes a first communication port 1111, the first communication port 1111 faces the second port 1120, or the first communication port 1111 is disposed opposite to the second port 1120, in this embodiment, an axis of the first communication port 1111 coincides with an axis of the second port 1120; the second wall 1220 includes a second communication opening 1221, the second communication opening 1221 faces the first hole 1240, or the second communication opening 1221 is disposed opposite to the first hole 1240, and an axis of the second communication opening 1221 coincides with an axis of the first hole 1240, and further, axes of the first hole 1240, the second hole 1120, and the first through hole 1410 coincide. First wall 1110 is sealed from the bottom wall of connecting plate body 1400 to prevent refrigerant in second channel 1120 from leaking from the junction between first wall 1110 and connecting plate body 1400, and similarly, second wall 1220 is sealed from the top wall of connecting plate body 1400 to prevent refrigerant in first channel 1240 from leaking from the junction between second wall 1220 and connecting plate body 1400, and is generally sealed around first communication port 1111 and second communication port 1221.

The valve port 1350 is located in the first through hole 1410, and the outer wall of the valve port 1350 and the inner wall of the first through hole 1410 are sealed, and the valve port 1350 and the first through hole 1410 are sealed by placing a sealing ring therebetween, in this case, the first sealing surface 1352 is formed on the sidewall of the valve port 1350, and the second sealing surface 1353 is formed on the inner wall of the first through hole 1410. When the first valve body 1310 is welded and fixed to the first plate 1140, the valve port 1350, the valve seat 1370, and the valve needle are assembled into a whole, and then inserted into the first through hole 1311 of the first valve body, the valve port 1350 is inserted into the first through hole 1410, the sealing ring is disposed between the first sealing surface 1352 and the second sealing surface 1353, and the valve seat 1370 is screwed to the first valve body 1310. In other embodiments, the first wall 1110 includes a flange facing the second heat exchanging part, the wall of the first communication port 1111 includes a flange of the first wall 1110, and the flange of the first wall 1110 is located in the first through hole 1410 and is sealed with the wall of the first through hole 1410; similarly, the second wall 1220 includes a flange facing the first heat exchanging portion, the wall of the second communication port 1221 includes a flange of the second wall 1220, and the flange of the second wall 1220 is located in the first through hole 1410 and is sealed with the wall of the first through hole 1410. At this time, the valve port 1350 is received in the first communication port 1111 and the second communication port 1221, and in this case, the first sealing surface is formed on the side wall of the valve port 1350, and the second sealing surface may be formed on the flange of the first wall 1110 and/or the flange of the second wall 1220, or on the inner wall of the first through hole.

Referring to fig. 19, the thermal management device may be arranged without separately providing the connection plate 1400, the valve port 1350 is located inside the first communication port 1111 and the second communication port 1221, an outer wall of the valve port 1350 is hermetically sealed with an inner wall of the first communication port 1111 and with an inner wall of the second communication port 1221, of course, in order to increase the sealing surface or to increase the fixing strength, as shown in fig. 19c, the wall of the first communication port 1111 includes a flange formed at the first wall 1110, the flange formed at the first wall 1110 is directed toward the second heat exchanging part, the second communication port 1221 includes a flange formed at the second wall 1220, the flange formed at the second wall 1220 is directed toward the first heat exchanging part, the valve port portion 1350 is sealingly fixed with the flange formed at the first wall 1110 and the flange formed at the second wall 1220, at this time, the first sealing surface is formed on the sidewall of the valve port portion 1350, and the second sealing surface may be formed on the flange of the first wall 1110 and the flange of the second wall 1220.

Referring to fig. 19b, the flange formed on the first wall 1110 protrudes away from the first heat exchanging portion, the flange formed on the second wall 1220 also protrudes away from the first heat exchanging portion 1100, the flange of the first wall 1110 is located in the second communication port 1221, and the flange of the first wall 1110 and the flange of the second wall 1220 are hermetically disposed, such that the flange of the first wall 1110 and the flange of the second wall 1220 form a space for accommodating the valve port 1350, the valve port 1350 and the flange of the first wall 1110 are hermetically fixed, and the first sealing surface is formed on the side wall of the valve port 1350, and the second sealing surface can be formed on the flange of the first wall 1110 and the flange of the second wall 1220. If the guide portion 1380 and the valve port portion 1350 are separately provided, a gap between the valve port portion and the guide portion is a channel for communicating the second channel and the valve port, and the valve port portion 1350 and a wall of the first communication port 1111 and a wall of the second communication port 1221 may be welded and sealed. If the valve port 1350 and the guide 1380 are integrally formed, the valve port 1350 may be inserted into the first communication port 1111 and the second communication port 1221, a sealing member, such as a gasket, may be disposed between the valve port 1350 and the flange of the first wall 1110, and a sealing member, such as a gasket, may be disposed between the valve port 1350 and the flange of the second wall 1220. Of course, the flange formed on the first wall 1110 protrudes away from the first heat exchanging part, the flange formed on the second wall 1220 also protrudes toward the first heat exchanging part 1100, and the flange of the first wall 1110 and the flange of the second wall 1220 form a space for accommodating the valve port 1350, which will not be described in detail.

Referring to fig. 19a, the wall of the first communication port 1111 does not include a flange, the first wall 1110 and the second wall 1220 are sealed, the upper wall of the valve port 1350 is sealed with the first wall 1110, the first sealing surface is formed on the upper wall of the valve port 1350, the second sealing surface is formed on the first wall 1110, the valve port 1350 is located in the second port, but the valve port 1350 may also be located in the first port, the first sealing surface is located on the lower wall of the valve port 1350, and the second sealing surface is formed on the first wall 1110. Of course, the first sealing surface may also be formed on the inner wall of the valve port 1350, and accordingly, the flange of the first wall 1110 and the flange of the second wall 1220 are located in the inner cavity of the valve port 1350, which will not be described in detail.

Referring to fig. 20, the thermal management device 1000 includes a connecting plate 1400, where the connecting plate 1400 includes a first through hole 1410, the first through hole 1410 has openings on an upper wall and a bottom wall of the connecting plate, the opening of the first through hole 1410 on the upper wall of the connecting plate is opposite to the second communication port 1221, the opening of the first through hole 1410 on the bottom wall of the connecting plate is opposite to the first communication port 1111, the first through hole 1410 includes a small diameter portion and a large diameter portion, a space surrounded by the small diameter portion forms a valve port 1351 of a throttling unit, at this time, the guide portion 1380 is separated from an entity forming the valve port, and a gap formed between the guide portion 1380 and the first plate forms a passage communicating the second duct and the valve port. The valve port 1351 is integrally formed on the connecting plate body 1400, or the valve port 1351 is a part of the connecting plate body 1400, so that the parts and assembly difficulty can be reduced.

Referring to fig. 21-23, in the present embodiment, the first valve body 1310 is fixedly connected to the second plate body 1210, the second plate body 1210 has an opening for receiving a portion of the first valve body 1310, the first through hole 1311 has an opening at a bottom wall of the first valve body and the opening faces the first hole 1240, the first through hole 1311 has a cavity for receiving the valve port 1350, and a sealing arrangement is formed between a side wall of the valve port 1350 and an inner wall of the first through hole 1311; the fourth flow channel is positioned outside the heat exchange core body.

The thermal management device comprises a communication comprising a fourth flow channel, the communication comprising a first end 1520 and a second end 1530, the first end 1520 being located on one side of the heat exchange core and relatively close to the second plate body 1210, the second end being located on the opposite side of the heat exchange core and relatively close to the first plate body 1140, the first end 1520 and the second end 1530 each having an opening communicating with the fourth flow channel, in the axial direction of the first hole. In the present embodiment, the communicating portion is a pipe body 1500, the fourth flow channel includes a cavity of the pipe body 1500, the pipe body 1500 is one form of the communicating portion, and the plate body or the block body may be an implementation form of the communicating portion. The thermal management device has a first transition passage 1313 and a second transition passage 1105, the first transition passage 1313 being formed in the first valve body 1310, the first transition passage 1313 being located on the upper side of the second plate body 1210, the first transition passage 1313 having an opening in the wall of the first valve body, the first end 1520 being located in the first transition passage 1313 and being sealingly secured to the inner wall of the first communication passage 1313, whereby the fourth flow passage communicates with the valve chamber 1330. The second transition channel 1105 is located at one end of the second duct 1120 and is communicated with the second duct 1120, in this embodiment, the second transition channel 1105 is located on or fixedly connected with the first plate 1140, the second end portion 1530 is located at the second transition channel 1105, and a wall of the second end portion 1530 is hermetically fixed with a wall of the second transition channel 1105, so that the fourth flow channel is communicated with the second duct 1120; the tube body 1500 is disposed outside the heat exchanging core body, and a gap is formed between the tube body and the side wall of the heat exchanging core body, so that heat exchange between the refrigerant in the tube body and the refrigerant in the heat exchanging core body is reduced. Of course, tube 1500 may also be secured to the outer wall of the heat exchange core to enhance the overall mechanical properties of the thermal management device. When the wall of the first end 1520 and the wall of the first transition passage 1313 are sealed by a sealing ring, and the wall of the second end 1530 and the wall of the second transition passage 1105 are sealed by a sealing ring, the pipe body 1500 can be installed by a plug-in manner, the installation manner is relatively convenient, and the pipe body can also be installed by welding and sealing.

In a specific embodiment, referring to fig. 22, the first plate 1140 includes a plate portion 1144 and a protruding portion 1141, the plate portion 1144 is substantially parallel to the plate, the second transition channel has an opening facing the second aperture on the upper wall of the plate portion, the protruding portion 1141 protrudes from the heat exchange core body relative to the plate portion 1144, the protruding portion 1141 may be integrally formed with the plate portion 1144 or welded together, the second transition channel 1105 has a first connection port 1142 and a second connection port 1143 on the protruding portion 1141, the first connection port 1142 is located on the side wall of the protruding portion 1141, the second connection port 1143 faces the second aperture 1120, and the second end 1530 is fixed to the wall of the first connection port 1142 in a sealing manner. The second orifice 1120 is communicated with the cavity of the pipe body 1500 through the second connection passage 1105, and further communicated with the valve cavity 1330 of the throttle unit; the second connection port 1143 may also be connected to other external devices, and in this case, the second connection port, i.e., the third outlet 1105, so that the second channel 1120 may also communicate with other components. The second transition channel 1105 may also have only the first connection port 1142 on the protruding portion, the first connection port 1142 may face the second hole channel 1120, and the first connection port 1142 is located on the sidewall of the protruding portion. In addition, the first plate body 1140 does not include a boss, and will not be described in detail.

Referring to fig. 23, the thermal management device includes a connection plate body 1400, along the axial direction of the first aperture 1240, the connection plate body 1400 is located between the first heat exchanging portion 1100 and the second heat exchanging portion 1200, the connection plate body 1400 includes a second transition channel 1105, or the second transition channel 1105 is formed on the connection plate body, the connection plate body 1400 has a first connection wall, the first connection wall is in contact with and fixed to the first wall 1110, the second transition channel 1105 has an opening in the first connection wall of the connection plate body 1400, the second transition channel 1105 has a first connection port 1142 in the second connection wall of the connection plate body 1400, the first connection wall and the second connection wall are arranged to intersect, and the second connection wall is substantially perpendicular to the plate of the heat exchanging core. The third outlet 1005 of the thermal management device is formed in the first plate 1140 or a boss fixedly connected to the first plate, and the third outlet 1005 is communicated with the second duct. The communication part further comprises a main body part 1510, the main body part 1510 is substantially parallel to the side wall of the heat exchange core body, the main body part 1510 is located between the first end 1520 and the second end 1530, the communication part further comprises at least one first bent part 1540 between the main body part 1510 and the first end 1520, and the communication part further comprises at least one second bent part 1550 between the main body part 1510 and the second end 1530, so that the working medium can flow smoothly.

It should be noted that: although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted for those skilled in the art, and all technical solutions and modifications that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims (9)

1. A heat management device comprises a throttling unit and a heat exchange core body, wherein the heat exchange core body comprises a plurality of stacked plates, a first plate body and a second plate body, and the plates are positioned between the first plate body and the second plate body along the stacking direction of the plates; the heat exchange core comprises a first heat exchange part and a second heat exchange part, the first heat exchange part comprises the first plate body, the second heat exchange part comprises the second plate body, the heat management device comprises a refrigerant flow channel and a cooling liquid flow channel, the cooling liquid flow channel is formed in the second heat exchange part, the refrigerant flow channel comprises a first flow channel, a second flow channel and a third flow channel, the first flow channel and the second flow channel are formed in the first heat exchange part, the third flow channel is formed in the second heat exchange part, the refrigerant in the first flow channel and the refrigerant in the second flow channel can exchange heat in the first heat exchange part, and the refrigerant in the third flow channel and the cooling liquid in the cooling liquid flow channel can exchange heat in the second heat exchange part;

the throttling unit comprises a first valve body, the throttling unit is provided with a valve port, the third flow channel comprises a first hole channel, the first hole channel comprises a second hole channel, part of the throttling unit is positioned in the second hole channel along the axial direction of the first hole channel, the valve port is positioned in the first hole channel or the second hole channel or between the first hole channel and the second hole channel, and the second hole channel can be communicated with the first hole channel through the valve port.

2. The thermal management device according to claim 1, wherein the first heat exchanging portion comprises a first wall, the second heat exchanging portion comprises a second wall, the first wall and the second wall are disposed opposite to each other, the first wall defines a first opening, the first opening communicates with the second flow channel, the second wall defines a second opening, the second opening communicates with the third flow channel, the first opening and the second opening are disposed opposite to each other or are staggered, and the first opening communicates with the second opening;

the throttling unit comprises a valve port portion and a guide portion, at least the guide portion is located in the second duct, the valve port is formed in the valve port portion, the first wall comprises a first communication port facing the second duct, the second wall comprises a second communication port facing the first duct; the heat management device comprises a first sealing surface formed in the valve mouth and arranged sealingly between the first and second sealing surfaces, and a second sealing surface formed in or between the first and/or second wall.

3. The thermal management device of claim 2, wherein the valve port portion and the guide portion are a unitary structure, the guide portion having a channel communicating the second orifice and the valve port; the first sealing surface is formed in a side wall of the valve port portion, the first communication port and the second communication port accommodate at least part of the valve port portion, and the second sealing surface is formed in a wall of the first communication port and/or a wall of the second communication port.

4. The thermal management device of claim 2 or 3, wherein the wall forming the first communication port comprises a cuff, and the wall forming the second communication port comprises a cuff forming a cavity to receive the valve port portion, the first sealing surface being formed on a side wall of the valve port portion, and the second sealing surface being formed on the cuff.

5. The thermal management device according to claims 2-4, further comprising a connection plate body positioned between the first wall and the second wall, the connection plate body being secured to the first wall and the second wall, the connection plate body comprising a first through hole positioned opposite the first orifice and the second orifice, the valve port being positioned in a cavity of the first through hole, the first sealing surface being formed in a sidewall of the valve port, the second sealing surface being further formed in a wall of the first through hole.

6. The thermal management device according to claim 1, wherein the first heat exchanging portion comprises a first wall, the second heat exchanging portion comprises a second wall, the first wall and the second wall are disposed opposite to each other, the first wall defines a first opening, the first opening communicates with the second flow channel, the second wall defines a second opening, the second opening communicates with the third flow channel, the first opening and the second opening are disposed opposite to each other or are staggered, and the first opening communicates with the second opening;

the heat management device further comprises a connecting plate body, the connecting plate body is located between the first wall and the second wall, the connecting plate body is fixed with the first wall and the second wall, the connecting plate body comprises a first through hole, the first through hole is arranged opposite to the first pore channel and the second pore channel, the first through hole comprises a large diameter portion and a small diameter portion, a space surrounded by the small diameter portion forms the valve port, a guide portion of the throttling unit is arranged in a split mode with the connecting plate body, and the guide portion of the throttling unit is located in the second pore channel.

7. The thermal management device according to any of claims 1 to 6, wherein said thermal management device comprises a first inlet, a second inlet, a first outlet, a second outlet, said third flow channel further comprises a sixth port channel and a first interplate channel of said second heat exchanging part, said first interplate channel of said second heat exchanging part communicating said first port channel and said sixth port channel; the second flow channel comprises a third hole channel, a fourth hole channel and a first inter-plate channel of the first heat exchanging part, the first inter-plate channel of the first heat exchanging part is communicated with the third hole channel and the fourth hole channel, and the first outlet is communicated with the fourth hole channel; the first flow passage further comprises a fifth hole channel and a second interplate channel of the first heat exchanging part, the second interplate channel of the first heat exchanging part is communicated with the fifth hole channel and the second hole channel, and the first inlet is communicated with the fifth hole channel; the cooling liquid channel comprises a seventh hole channel, an eighth hole channel and a second inter-plate channel of the second heat exchanging part, the second inter-plate channel of the second heat exchanging part is communicated with the seventh hole channel and the eighth hole channel, the second inlet is communicated with the seventh hole channel, and the second outlet is communicated with the eighth hole channel;

the first outlet, the first inlet are located on one side of the thermal management device, and the second outlet, the second inlet are located on the opposite side of the thermal management device.

8. A thermal management system comprising a thermal management device according to any of claims 1-7, a compressor and a condenser, the thermal management device comprising a first inlet, a first outlet, and a second outlet, a second inlet, the outlet of the compressor being in communication with the first inlet through the condenser, the first outlet being in communication with the inlet of the compressor, the thermal management system further comprising a first heat exchanger and a pump, the second outlet of the thermal management device being in communication with the second inlet through the first heat exchanger and the pump.

9. The thermal management system of claim 8, further comprising a third inlet, a third outlet, the thermal management system comprising an evaporator and a throttling element, the third outlet in communication with the third inlet through the throttling element, the evaporator.

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