Thermal management device and thermal management system

Abstract

The present invention discloses a thermal management device and a thermal management system. The thermal management device includes a first valve body, a connecting part and a heat exchange core. The heat exchange core includes a first heat exchange part and a second heat exchange part stacked between the first plate body and the second plate body. The flow channels of the first heat exchange part are all refrigerant flow channels, and the second heat exchange part includes a refrigerant flow channel and a coolant flow channel. The connecting part connecting the first valve body and the first heat exchange part is placed outside the heat exchange core, so that the assembly is relatively simple.

Description

Technical Field

[0001] The present invention relates to the field of thermal management technology, and in particular to a thermal management device and a thermal management system. Background Art

[0002] The intermediate heat exchanger, plate evaporator and expansion valve in the thermal management system are connected through pipelines, or the plate evaporator and expansion valve are integrated, and the intermediate heat exchanger and the integrated plate evaporator are set separately, so the assembly of the thermal management system is relatively complicated. Summary of the Invention

[0003] The purpose of this application is to provide a thermal management device and a thermal management system to facilitate simplifying the assembly of the thermal management system.

[0004] One embodiment of the present invention provides a thermal management device, the thermal management device includes a connecting portion, a valve port portion, a first valve body and a heat exchange core, the heat exchange core includes a plurality of stacked plates, a first plate body and a second plate body, along the stacking direction of the plates, the plates are located between the first plate body and the second plate body; the heat exchange core includes a first heat exchange portion and a second heat exchange portion, the first heat exchange portion includes the first plate body, the second heat exchange portion includes the second plate body, the thermal management device has a refrigerant flow channel and a coolant flow channel, the coolant flow channel is formed in the second heat exchange portion, the refrigerant flow channel includes a first flow channel, a second flow channel, and a third flow channel and a fourth flow channel, the fourth flow channel including a cavity of the communicating portion, the third flow channel formed in the second heat exchange portion, the third flow channel including a first hole, the first flow channel and the second flow channel formed in the first heat exchange portion, the first flow channel including a second hole; the refrigerant in the first flow channel and the refrigerant in the second flow channel can exchange heat in the first heat exchange portion, and the refrigerant in the third flow channel and the coolant in the coolant flow channel can exchange heat in the second heat exchange portion; the valve port portion is fixed to the first valve body, the first valve body is fixed to the second plate body, and the second plate body has an opening for the refrigerant to flow from the valve port portion into the first hole;

[0005] The thermal management device includes a first transition channel and a second transition channel, the first transition channel is formed in the first valve body, the second transition channel is located at one end of the second channel and is connected to the second channel, the wall of the first transition channel cooperates with the wall of the first end of the connecting portion, and the wall of the second transition channel cooperates with the wall of the second end of the connecting portion; at least part of the connecting portion is arranged on the outside of the heat exchange core.

[0006] Another embodiment of the present invention also provides a thermal management system, which includes a thermal management device, a compressor and a condenser. The thermal management device includes a first inlet, a first outlet, a second outlet and a second inlet. The outlet of the compressor is connected to the first inlet through the condenser, and the first outlet is connected to the inlet of the compressor. The thermal management system also includes a first heat exchanger and a pump. The second outlet of the thermal management device is connected to the second inlet through the first heat exchanger and the pump.

[0007] The heat exchange core of the above technical solution of the present application includes a first heat exchange part and a second heat exchange part. The first heat exchange part is for refrigerant-refrigerant heat exchange, and the second heat exchange part is for refrigerant-coolant heat exchange after throttling. The first valve body is fixed to the second plate body, and the connecting part connecting the first valve body and the first heat exchange part is placed outside the heat exchange core. When the thermal management component is connected to the system, it only needs to connect the corresponding interface, which makes the assembly of the entire thermal management device relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a connection schematic block diagram of a thermal management system;

[0009] Figure 2 It is another connection schematic block diagram of a thermal management system;

[0010] Figure 3 is a schematic diagram of the three-dimensional structure of a first embodiment of a thermal management device;

[0011] Figure 4 yes Figure 3 A schematic diagram of the first-person perspective of the three-dimensional structure of a local explosion;

[0012] Figure 5 yes Figure 3 A schematic diagram of the second-perspective three-dimensional structure of a local explosion;

[0013] Figure 6 3 is a schematic diagram of the top view structure;

[0014] Figure 7 yes Figure 6 Schematic diagram of the first cross-sectional structure along AA;

[0015] Figure 8 yes Figure 6 Schematic diagram of the cross-section structure along BB;

[0016] Figure 9 is a schematic diagram of the three-dimensional structure of the connector;

[0017] Figure 10 yes Figure 7 A schematic diagram of the enlarged structure of the middle part A;

[0018] Figure 11 yes Figure 7 A schematic diagram of the enlarged structure of the middle part B;

[0019] Figure 12 is a schematic perspective structural diagram of a second embodiment of a thermal management device;

[0020] Figure 13 It is a schematic diagram of the second enlarged structure of part A;

[0021] Figure 14 yes Figure 6 Schematic diagram of another cross-sectional structure along AA;

[0022] Figure 15 yes Figure 14 Schematic diagram of the plate structure of the second heat exchange part;

[0023] Figure 16 yes Figure 14 A schematic diagram of the enlarged structure of the middle part A;

[0024] Figure 17 is a schematic cross-sectional structural diagram along line AA of a third embodiment of a thermal management device;

[0025] Figure 18 yes Figure 17 Schematic diagram of the first enlarged structure of the middle B part;

[0026] Figure 19 It is a schematic diagram of three other amplified structures of Part B;

[0027] Figure 20 This is a schematic diagram of the fifth enlarged structure of Part B;

[0028] Figure 21 is a schematic perspective structural diagram of a fourth embodiment of a thermal management device;

[0029] Figure 22 yes Figure 21 Schematic diagram of the cross-section structure;

[0030] Figure 23 It is a schematic diagram of a cross-sectional structure of a thermal management device;

[0031] Figure 24 It is a schematic diagram of the connection between the tube body and the first wall and the second wall. DETAILED DESCRIPTION

[0032] The thermal management system and thermal management device of the technical solution of the present invention can have multiple implementation methods, 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. The following is an explanation using a vehicle thermal management system and a thermal management device as an example with reference to the accompanying drawings.

[0033] See also Figure 3-11 The thermal management device 1000 includes a heat exchange core and a throttling unit 1300. The heat exchange core includes a plurality of stacked plates, a first plate 1140 and a second plate 1210. Along the stacking direction of the plates, the plates are located between the first plate 1140 and the second plate 1210. Specifically, the heat exchange core includes a first heat exchange part 1100, a connecting plate 1400 and a second heat exchange part 1200. In this embodiment, the first plate 1140 is a part of the first heat exchange part 1100, and the second plate 1210 is a part of the second heat exchange part 1200. The first heat exchange part 1100 also includes a top plate, and several plates of the first heat exchange part 1100 are stacked from the first plate 1140 to the top plate. The second heat exchange part 1200 also includes a bottom plate, and several plates of the second heat exchange part 1200 are stacked from the bottom plate to the second plate 1210. The connecting plate 1400 is located between the top and bottom plates and is welded to them. In other embodiments, the top and bottom plates may not be provided, and the connecting plate may be directly welded to the plates of the first heat exchange section 1100 and the plates of the second heat exchange section 1200. It should be noted that for ease of description, the second heat exchange section 1200 is defined as being located above the first heat exchange section 1100. Of course, the connecting plate may not be provided. The heat exchange core is a group structure, comprising 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. These plates are located between the first plate 1140 and the second plate 1210 along the stacking direction of the plates, with several plates stacked from the first plate 1140 to the second plate 1210, or in other words, several plates stacked from the second plate 1210 to the first plate 1140.

[0034] The first heat exchange section 1100 and the second heat exchange section 1200 both include a plurality of stacked plates, and the plate structures may be identical. The structure of the first heat exchange section 1100 will be described as an example. In the first heat exchange section 1100, adjacent plates are stacked to form a first inter-plate flow channel and a second inter-plate flow channel. Except for the two plates closest to the first plate body 1140 and the top plate, one side of the inner plate is the first inter-plate flow channel, and the other side is the second inter-plate flow channel. In this embodiment, the adjacent plates have the same structure. For ease of description, one of the two adjacent plates is defined as a first plate and the other as a second plate. For example, a first plate and one of the two second plates adjacent to the first plate form a first inter-plate flow channel, while the first plate and the second plate form a second inter-plate flow channel. The first inter-plate flow channel and the second inter-plate flow channel are relatively disconnected. The fluid in the first inter-plate channel and the fluid in the second inter-plate channel can exchange heat. It should be noted that the relative disconnection between the first and second inter-plate flow channels refers to a lack of connection within the first heat exchange unit 1100. Once the thermal management device 1000 becomes part of the thermal management system, connection may occur. The thickness of the main body of the connecting plate, top plate, and bottom plate is greater than that of the main body of the plate, thereby enhancing the mechanical strength of the thermal management device.

[0035] 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 the inlet of the refrigerant flow channel, and the first outlet 1002 is the outlet of the refrigerant flow channel; the coolant flow channel connects the second inlet 1003 and the second outlet 1004, the second inlet 1003 is the inlet of the coolant flow channel, and the second outlet 1004 is the outlet of the coolant flow channel. The second outlet 1004, the second inlet 1003, and the coolant flow channel are formed in the second heat exchange portion 1200, and the first outlet 1002 and the first inlet 1001 are formed in the first heat exchange portion 1100. Along the stacking direction of the plates, the second outlet 1004 and the second inlet 1003 are located on one side of the thermal management device 1000, while the first outlet 1002 and the first inlet 1001 are located on the opposite side of the thermal management device 1000. The first inlet 1001 and the first outlet 1002 can be formed in a pipe or protrusion fixedly connected to the first plate, and the second inlet 1003 and the second outlet 1004 can be formed in a pipe or protrusion fixed to the first plate. In other embodiments, the first inlet 1001 and the first outlet 1002 can be formed in the first plate, and the second inlet 1003 and the second outlet 1004 can be formed in the first plate.

[0036] See also Figure 7 and Figure 8The 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 exchange part 1100. The first inter-plate flow channel of the first heat exchange part 1100 is part of the first flow channel, and the second inter-plate flow channel of the first heat exchange part 1100 is part of the second flow channel.

[0037] The first heat exchange section 1100 has at least a fifth channel 1160, a second channel 1120, a third channel 1130, and a fourth channel 1150, all of which extend along the direction in which the plates of the first heat exchange section are stacked. The first flow channel includes the fifth channel 1160, a first inter-plate channel located between the plates, and the second channel 1120. The first inter-plate channel of the first heat exchange section 1100 connects the fifth channel 1160 and the second channel 1120. In this embodiment, the first inlet 1001 is connected to the fifth channel 1160. Refrigerant enters the fifth channel 1160 through the first inlet 1001, then enters the first inter-plate channel of the first heat exchange section. After heat exchange with refrigerant in the second inter-plate channel of the first heat exchange section, it enters the second channel 1120. The second channel 1120 has an opening in the top plate of the first heat exchange section, and refrigerant leaves the first heat exchange section 1100 through the opening in the top plate of the first heat exchange section. The second flow channel includes a third channel 1130, a second inter-plate channel located between the plates, and a fourth channel 1150. The second inter-plate channel of the first heat exchange unit 1100 connects the third channel 1130 and the fourth channel 1150. The first outlet 1002 is connected to the fourth channel 1150. That is, the refrigerant in the second flow channel enters the second inter-plate channel of the first heat exchange unit 1100 through the third channel 1130, exchanges heat with the refrigerant in the first inter-plate channel, and then enters the fourth channel 1150. The refrigerant in the fourth channel 1150 is discharged from the thermal management device through the first outlet 1002.

[0038] The first inter-plate flow channel of the second heat exchange section 1200 is part of the third flow channel, and the second inter-plate flow channel of the second heat exchange section 1200 is part of the coolant flow channel. The second heat exchange section 1200 includes at least a first channel 1240, a sixth channel 1230, a seventh channel 1260, and an eighth channel 1270. The first channel 1240 and the sixth channel 1230 are part of the third flow channel, while the seventh channel 1260 and the eighth channel 1270 are part of the coolant flow channel. The third flow channel includes the first channel 1240 and the sixth channel 1230, located in the first inter-plate flow channel of the second heat exchange section 1200. The first inter-plate channel of the second heat exchange section 1200 connects the first channel 1240 and the sixth channel 1230. The coolant flow path includes the seventh channel 1260, the second inter-plate channel located in the second heat exchange section 1200, and the eighth channel 1270. The second inter-plate channel of the second heat exchange section 1200 connects the seventh channel 1260 and the eighth channel 1270. In this embodiment, the second inlet 1003 is connected to the seventh channel 1260, and the second outlet 1004 is connected to the eighth channel 1270. The coolant enters the seventh channel 1260 through the second inlet 1003, then enters the second inter-plate channel of the second heat exchange section 1200, exchanges heat with the refrigerant in the third channel, and then enters the eighth channel 1270 and exits the thermal management device through the second outlet 1004.

[0039] Along the plate stacking direction, the connecting 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, and the second wall 1220 is formed on the bottom plate of the second heat exchange portion 1200. The lower side wall of the connecting plate body 1400 is welded to the first wall 1110, and the upper side wall of the connecting plate body 1400 is welded to the second wall 1220. The first wall 1110 and the second wall 1220 are arranged opposite each other. The relative arrangement described here includes indirect relative arrangement and direct relative arrangement. Indirect relative arrangement means that there is another object, such as the connecting plate body 1400, between the first wall 1110 and the second wall 1220. The connecting plate body 1400 may not be arranged between the first wall 1110 and the second wall 1220, that is, the first wall 1110 and the second wall 1220 are directly opposite each other and are welded to each other. Connecting plate body 1400 also includes a first through-hole 1410 and a second through-hole 1420. The first through-hole 1410 and the second through-hole 1420 extend through connecting plate body 1400 and have openings on the upper and lower walls, respectively. Second through-hole 1420 connects sixth channel 1230 with third channel 1130, that is, second through-hole 1420 connects the third flow channel with the second flow channel. Specifically, sixth channel 1230 has a second opening 1231 on the second wall. Second opening 1231 at least partially faces and communicates with second through-hole 1420. Third channel 1130 has a first opening 1131 on the first wall. First opening 1131 at least partially faces and communicates with second through-hole 1420. First opening 1131 communicates with second opening 1231 via second through-hole 1420. Thus, third channel 1130 communicates with sixth channel 1230 via second through-hole 1420. In this embodiment, first opening 1131 and second opening 1231 are staggered, and the second through-hole extends narrowly. This facilitates smoother refrigerant flow through the second through-hole. Of course, first opening 1131 and second opening 1231 can also be positioned opposite each other. After heat exchange between the refrigerant in the third flow channel and the coolant in the coolant flow channel in the second heat exchange section 1200, the refrigerant enters the second flow channel of the first heat exchange section through second through-hole 1420, and then heat exchanges with the refrigerant in the first flow channel in the first heat exchange section 1100.

[0040] The first through hole 1410 is in communication with the second channel 1120. Specifically, the second channel 1120 forms a first communication opening 1121 on the first wall 1110. The first communication opening 1121 at least partially faces the first through hole 1410 and is in communication with the first through hole 1410. Of course, a seal is provided between the first wall 1110 and the corresponding position of the connecting plate body 1400 to prevent refrigerant from leaking from the connection between the first heat exchange portion 1100 and the connecting plate body 1400. A seal is provided between the second wall 1220 and the corresponding position of the connecting plate body 1400 to prevent refrigerant from leaking from the connection between the second wall and the connecting plate body 1400. In addition, in this embodiment, the connecting plate body 1400 also includes two square holes 1430. The function of the square holes 1430 is 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 effect between the first heat exchange part 1100 and the second heat exchange part 1200; the two square holes 1430 are located near the middle position of the connecting plate body 1400, and the temperature difference between the middle position of the first heat exchange part 1100 and the second heat exchange part 1200 is relatively large, which is not only beneficial to reduce heat conduction, but also beneficial to the balanced mass distribution of the thermal management device.

[0041] See also Figure 7 and Figure 10 The throttling unit 1300 includes a valve core, a valve port 1350, and a valve seat 1370. The valve port 1350 is formed with a valve port 1351. In this embodiment, the valve core is a valve needle 1320, which can move relative to the valve port 1350 to adjust the opening of the valve port 1351. The throttling unit 1300 also includes a transmission mechanism, a stator, a rotor, and a guide portion 1380. The transmission mechanism is a threaded transmission mechanism, which includes a movable portion and a fixed portion. One of the movable portion and the fixed portion includes a screw, and the other includes a nut that threads with the screw. The movable portion is assembled with the valve needle 1320, and the fixed portion can be directly or indirectly fixed to the valve seat 1370. The guide portion 1380 is fixed to the valve seat 1370 and can guide the valve needle to prevent axial deviation of the valve needle. The valve port 1350 is fixedly connected to the guide portion 1380. In this embodiment, the valve port 1350 and the guide portion 1380 are integrally formed, and the valve needle 1320 is substantially coaxial with the valve port 1351. The stator is electrically connected to a control circuit that controls the stator. When energized, the stator generates an excitation magnetic field that drives the rotor to rotate, which in turn drives the valve needle through a threaded transmission mechanism. When the rotor rotates, the screw, driven by the rotor due to the pitch, rotates relative to the nut, achieving rotational and axial movement. The valve needle is relatively fixed to the screw, allowing the valve needle to move axially with the screw, thereby increasing or decreasing the gap between the valve needle 1320 and the valve port 1351, thereby achieving refrigerant throttling.

[0042] The throttling unit 1300 also 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 is relatively fixed to the second plate body 1210, and the fixing method can be welding, bonding or threaded connection. The second plate body 1210 has a fourth opening 1211, and the fourth opening 1211 is connected to the first channel 1240. The third opening 1312 is arranged opposite to the fourth opening 1211. The third opening 1312 is connected to the fourth opening 1211, and then the third opening 1312 is connected to the first channel 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. The valve seat 1370 is threaded, plugged, or welded to the wall of the first through-hole 1311. Compared to the bottom wall of the first valve body 1310, the valve seat 1370 is closer to the upper wall of the first valve body 1310. At least a portion of the connector 1340 extends into the cavity formed by the first through-hole 1311 and is fixed to the wall of the first through-hole 1311. In this embodiment, the first through-hole 1311 is formed with a stepped surface, and the connector 1340 is fixed to this stepped surface. Compared to the upper wall of the first valve body, the connector 1340 is closer to the lower wall of the first valve body. Along the extension direction of the first through-hole 1311, the space between the valve seat 1370 and the connector 1340 forms a valve cavity 1330. When the valve needle opens the valve port 1351, the valve port 1351 communicates with the valve cavity 1330.

[0043] Please participate Figure 9 and Figure 10 The connector 1340 includes a connecting portion 1342, a fixing portion 1343, and a receiving portion 1341. The fixing portion 1343 is fixed to the wall of the first through-hole 1311. In this embodiment, the throttling unit 1300 also includes a support ring 1360. The support ring 1360 is located in the first through-hole 1311 and is threadedly fixed to the first valve body 1310, thereby limiting the fixing portion 1343 of the connector relative to the stepped surface of the first valve body. In other embodiments, one end of the support ring 1360 abuts the second plate 1210, and the other end of the support ring 1360 abuts the fixing portion 1343 of the connector. During welding, the support ring 1360 fixes the connector 1340 to the stepped surface of the first valve body 1310, preventing the connector 1340 from shaking. The accommodating portion 1341 forms an accommodating cavity, and at least part of the valve mouth portion 1350 is located in the accommodating cavity of the accommodating portion 1341. A seal is set between the outer wall of the valve mouth portion 1350 and the inner wall of the accommodating portion 1341, such as a sealing ring is set between the outer wall of the valve mouth portion 1350 and the inner wall of the accommodating portion 1341.

[0044] The refrigerant flow path also includes a fourth flow path. In this embodiment, the fourth flow path is located within the heat exchange core and is used to connect the first flow path and the third flow path. Specifically, the third flow path includes a first hole 1240, the first flow path includes a second hole 1120, at least a portion of the fourth flow path is located within the first hole 1240, one end of the fourth flow path is connected to the second hole 1120, and the other end of the fourth flow path is connected to the valve port 1351 of the throttling unit 1300. In this way, the refrigerant in the first heat exchange unit 1100 can enter the valve port 1351 of the throttling unit through the fourth flow path.

[0045] The thermal management device 1000 includes a tube body 1500, which is hollow and open at both ends. Most of the tube body 1500 is located in the first channel 1240, or in other words, the first channel 1240 accommodates the tube body 1500. Specifically, the first plate of the second heat exchange part includes a first orifice 1204, and multiple first orifices 1204 form a first channel. Along the radial direction of the first channel 1240, the first channel 1240 is located on the circumferential side of the tube body 1500, or in other words, the first orifice accommodates at least part of the fourth flow channel. In the axial direction of the first channel 1240, at least a portion of the tube body 1500 is located between the valve port 1351 and the second wall 1220. The first end of the tube body 1500 is located in the first through-hole 1410, and the outer wall of the first end of the tube body 1500 is sealed and fixed to the inner wall of the first through-hole 1410. This allows the cavity of the first through-hole 1410 to communicate with the cavity of the tube body 1500, thereby achieving communication between the first flow channel and the cavity of the tube body 1500. It can be seen that the second wall 1220 of the second heat exchange portion 1200 has an opening to accommodate the tube body 1500. In this embodiment, the fourth flow channel includes the cavity of the tube body 1500, that is, the fourth flow channel is part of the refrigerant flow channel and can connect the first flow channel and the valve port 1351 of the throttling unit. The second end of the tube body 1500 is located in the accommodating cavity of the accommodating portion 1341, and the outer wall of the second end is sealed and fixed to the inner wall of the accommodating portion 1341. The sealing method may be welding.

[0046] Along the extension direction of first through-hole 1311, the second end of tube body 1500 is closer to second heat exchange portion 1200 than valve port 1350. Valve port 1350 is relatively close to valve seat 1370, and the opening of tube body 1500 faces valve port 1351. Thus, the cavity of tube body 1500 is connected to valve port 1351. Along the radial direction of first through-hole 1311, connecting portion 1342 is located between fixing portion 1343 and accommodating portion 1341. Connecting portion 1342 connects valve cavity 1330 and first channel 1240. In this embodiment, the connecting portion is a hole extending through connector 1340. During operation of thermal management device 1000, refrigerant passing through tube body 1500 is throttled by valve port 1351 before flowing into valve cavity 1330 and then into first channel 1240, i.e., the third flow channel, through connecting portion 1342. In this embodiment, the connector 1340 is integrally stamped from a sheet metal member and has a generally trumpet-shaped shape. In other embodiments, the fixing portion of the connector 1340 can also be fixed between the second plate 1210 and the first valve body 1310, or the fixing portion can be accommodated in the fourth opening 1211 and fixed to the inner wall of the fourth opening 1211. This eliminates the need for a support ring, thereby reducing the number of components and assembly steps. It should be noted that the fourth opening 1211 is a passage connecting the valve cavity to the first channel 1240. Alternatively, the connector 1340 can include only the accommodating portion 1341, with at least a portion of the valve opening 1350 located in the cavity formed by the accommodating portion. The sidewalls of the valve opening 1350 are sealed and fixed to the inner wall of the accommodating portion 1341. The first end of the tube 1500 is located in the cavity formed by the accommodating portion 1341, or the accommodating portion 1341 is located within the first end. The wall of the first end is sealed and fixed to the wall of the accommodating portion 1341, typically by welding.

[0047] See also Figure 11 as well as Figure 10 The second heat exchange part 1200 includes a first partition 1280. The first partition 1280 and a plate of the second heat exchange part are an integral structure. Along the axial direction of the first channel 1240, the first partition 1280 forms the bottom wall of the first channel 1240. The first partition 1280 includes a through hole for accommodating the tube body 1500. The wall of the through hole of the first partition 1280 is fixed to the wall of the tube body 1500 and is sealed between the wall of the through hole of the first partition 1280 and the wall of the tube body 1500. In addition, the second heat exchange part 1200 also includes a second partition 1281. The second partition 1281 is closer to the throttling unit than the first partition 1280. The second partition 1281 is located in the first channel 1240. The second partition 1281 is an integrated structure with a plate of the second heat exchange part. The second partition 1281 also has a through hole to accommodate the tube body. The wall of the through hole of the second partition 1281 is sealed with the outer wall of the tube body, so that the second partition 1281 can change the flow direction of the refrigerant, so that the second heat exchange part 1200 has multiple processes.

[0048] See also Figure 7 as well as Figure 8 , combined with Figure 1 The thermal management system shown in the figure describes the operation of thermal management device 1000. The thermal management system includes a compressor 100, a condenser 200, and thermal management device 1000. The outlet of compressor 100 is connected to the first inlet 1001 of the thermal management device through condenser 200, and the first outlet 1002 of the thermal management device is connected to the inlet of compressor 100. The thermal management system also includes a first heat exchanger 400 and a pump 300. The second inlet 1003 of the thermal management device is connected to the second outlet 1004 of the thermal management device through the first heat exchanger 400 and pump 300. In other words, the coolant flow path of thermal management device 1000, the first heat exchanger 400, and the pump 300 form a coolant system or part of the coolant system. The coolant in the coolant system flows within the coolant system driven by pump 300. During operation, high-temperature, high-pressure refrigerant releases heat in condenser 200. Relatively low-temperature, high-pressure refrigerant enters the refrigerant flow path of thermal management device 1000, i.e., the first flow path of first heat exchange section 1100, through first inlet 1001. It then enters the cavity of tube body 1500. After throttling and pressure reduction through valve port 1351, the refrigerant enters valve cavity 1330 and then enters first channel 1240, i.e., the third flow path. There, the refrigerant absorbs heat from the coolant, lowering its temperature. It then enters sixth channel 1230. The refrigerant in the third flow path enters the second flow path through second through-hole 1420 of connecting plate 1400 and exits thermal management device 1000 through first outlet 1002. The refrigerant in the second flow path exchanges heat with the refrigerant in the first flow path in first heat exchange section 1100, further lowering the refrigerant temperature in the first flow path and raising the refrigerant temperature in the second flow path, thereby reducing compressor surge. After the coolant temperature in the coolant flow channel is reduced, it enters the first heat exchanger 400 to reduce the temperature of the battery or other equipment. The thermal management device 1000 includes two heat exchange parts, which are fixed by a connecting plate 1400. The first heat exchange part 1100 is for refrigerant-refrigerant heat exchange, and the second heat exchange part 1200 is for refrigerant-coolant heat exchange. The refrigerant in the first heat exchange part 1100 is connected to the throttling unit 1300 through the tube 1500. The tube 1500 is built into the heat exchange core. The throttling unit 1300 is fixed to the second plate of the second heat exchange part 1200. The throttled refrigerant exchanges heat with the coolant in the second heat exchange part to reduce the coolant temperature. The tube 1500 is built after the second heat exchange part 1200, which relatively reduces the length of the thermal management device along the plate stacking direction. The tube body used to connect the first heat exchange part 1100 and the throttling unit 1300 is placed in the heat exchange core, which can not only further reduce the volume of the thermal management device 1000, but also effectively reduce external damage to the tube body, thereby increasing the life of the thermal management device.

[0049] See also Figure 2 as well as Figure 12 , Figure 2 Another embodiment of the thermal management system is shown. In this embodiment, Figure 1 Compared with the embodiment of , the thermal management device further includes a third outlet 1005 and a third inlet 1006, wherein the third outlet 1005 is connected to the second channel 1120. In short, the refrigerant in the second channel can enter the throttling unit 1300 through the pipe body 1500, or be discharged from the third outlet 1005. The third inlet 1006 is connected to the third channel 1130, that is, the refrigerant flowing into the third channel includes both the refrigerant flowing in from the second heat exchange part and the refrigerant flowing in from the third inlet 1006. Figure 1 Compared to the illustrated thermal management system, the refrigerant in the first flow channel of thermal management device 1000 can enter throttling unit 1300 through tube body 1500 or enter throttling element 500 through third outlet 1005. After throttling by throttling element 500, the refrigerant enters second heat exchanger 600 to absorb external heat. The refrigerant then enters first heat exchange portion 1100 of the thermal management device through third inlet 1006, and finally is discharged through first outlet 1002 and enters compressor 100. By adding an inlet and an outlet to first heat exchange portion 1100 of thermal management device 1000, the second heat exchanger 600 can be connected to the thermal management system as an additional evaporator, achieving a higher degree of integration of the thermal management device.

[0050] See also Figure 13 , Figure 13 The schematic scheme is a schematic diagram of the thermal management device excluding the connector 1340. The cavity formed by the first end of the tube body 1500 accommodates at least part of the valve mouth portion 1350, and a seal is provided between the side wall of the valve mouth portion 1350 and the wall of the first end portion. Of course, in other forms, the valve mouth portion 1350 includes a connecting cavity, the valve port 1351 is located above the connecting cavity, the valve port 1351 is connected to the connecting cavity, the first end of the tube body 1500 is located in the connecting cavity, and the outer wall of the first end of the tube body 1500 is fixedly connected to the connecting cavity wall and sealed at the connection. In this way, the valve port is connected to the cavity of the tube body. Since there is no connector 1340, the throttled refrigerant enters the valve cavity and directly enters the first channel, which not only reduces the number of parts but also reduces the number of installation steps.

[0051] Figure 13 The valve mouth portion 1350 and the first end portion of the tube body 1500 are shown in FIG. 1 . The valve mouth portion 1350 and the first end portion of the tube body 1500 are located in the first through hole 1311 of the first valve body. After being fixed, the valve mouth portion 1350 and the first end portion of the tube body 1500 can also be located in the first channel. In this way, along the radial direction of the first channel 1240, the length of the first valve body can be reduced, and the volume of the thermal management device can be relatively small.

[0052] See also Figure 24The thermal management device may also not include the connecting plate 1400. The second channel 1120 forms a first communication opening 1111 in the first wall 1110, and the first communication opening 1111 is connected to the second channel. In a specific embodiment, the second end of the tube 1500 is located at the first communication opening 1111, and a seal is provided between the outer wall of the second end of the tube 1500 and the inner wall of the first communication opening 1111. In this way, the refrigerant in the second channel 1120 can enter the tube cavity. The second wall has a second communication opening 1221, which accommodates the tube 1500. The first partition 1280 can be a portion of the second wall 1220 or a portion of a plate adjacent to the second wall 1220. In this way, the refrigerant in the first channel does not leak between the first heat exchange portion and the second heat exchange portion. Of course, to increase the sealing surface between the tube and the wall of the first communication opening 1111, the wall of the first communication opening 1111 can be a protrusion relative to the main body of the first wall 1110. Compared with the thermal management device having the connecting plate 1400 , this embodiment is lighter in weight and smaller in size.

[0053] See also Figure 14-16 ,and Figure 7 Compared with the illustrated embodiment, the thermal management device does not have a separate tube body 1500. The first plate of the second heat exchange part 1200 includes a first orifice 1204 and at least one second orifice 1205. The wall forming the first orifice 1204 includes a first flange 1290. The first flange 1290 is folded from the main body of the first plate of the second heat exchange part 1200 toward the throttling unit 1300. Multiple first plates are stacked, and the first flange 1290 is inserted into the first flange adjacent to the upper side, and the two adjacent flanges are sealed. The inner walls of the first flanges 1290 of the multiple plates form the wall of the fourth flow channel. The part of the first flange 1290 adjacent to the valve mouth part 1350 is located in the accommodating cavity, so that the fourth flow channel is connected to the valve mouth 1351, and the first flange 1290 adjacent to the valve mouth part 1350 is sealed with the wall of the accommodating part 1341. Along the radial direction of the first channel, four second orifices 1205 are distributed on the outside of the first orifice 1204, and the second orifices 1205 form the first channel 1240. In other embodiments, each plate includes at least one second orifice. The opening of the first valve body 1310 faces the first channel 1240, thereby achieving communication between the valve cavity 1330 and the first channel 1240. In other embodiments, the connector 1340 can also be inserted into the inner wall of the first flange 1290 and sealed and fixed. When the throttling unit 1300 does not include the connector 1340, the valve port portion 1350 can be directly sealed and fixed to the inner wall or outer wall of the first flange 1290 to achieve communication between the valve port and the fourth channel. It can be seen that in the plate of the second heat exchange section, the plate closest to the first heat exchange section includes the first orifice and the first partition 1280, but does not include the second orifice, and the first partition 1280 is the bottom wall of the first channel.

[0054] See 17 and Figure 18 .and Figure 3 Compared to the illustrated first embodiment, the first valve body 1310 of the throttling unit 1300 is fixed to the first plate 1140, and the valve port 1350 is located between the first channel 1240 and the second channel 1120. The thermal management device does not include an additional fourth flow channel. The first valve body 1310 is fixed to the first plate 1140 by welding, threading, or adhesive bonding. The first heat exchange portion 1100 has space to accommodate the throttling unit 1300. In other embodiments, the valve port may be located in the second channel or the first channel, which will not be described in detail. In this embodiment, the first plate body includes a through hole for part of the throttling unit to pass through; the guide portion 1380 and the valve mouth portion 1350 are integrated into a structure, the guide portion 1380 is accommodated in the second channel 1120, and the guide portion 1380 has a channel connecting the second channel 1120 and the valve port 1351; along the axial direction of the first channel, the valve mouth portion 1350 is accommodated in the first through hole 1410 and is sealed with the wall of the first through hole. When the valve needle opens the valve port 1351, the second channel 1120 is connected to the first channel 1240 through the valve port 1351, that is, the first flow channel is connected to the third flow channel through the valve port 1351.

[0055] 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 wall of the valve port portion 1350, and the second sealing surface is located on the connecting plate body 1400. A sealing member is provided between the first sealing surface 1352 and the second sealing surface 1353 to achieve a seal between the first sealing surface 1352 and the second sealing surface 1353. Of course, the first sealing surface and the second sealing surface can also be surface seals, such as by finely machining the sealing surface to a certain precision to achieve a seal. The sealing member can be a sealing ring, solder, or other material capable of achieving a seal. The thermal management device 1000 is provided with the first sealing surface 1352 and the second sealing surface 1353 so that the refrigerant in the second channel can only flow into the first channel 1240 through the valve port.

[0056] The first wall 1110 includes a first communicating port 1111, which faces the second channel 1120, or the first communicating port 1111 is arranged opposite to the second channel 1120. In this embodiment, the axis of the first communicating port 1111 coincides with the axis of the second channel 1120; the second wall 1220 includes a second communicating port 1221, which faces the first channel 1240, or the second communicating port 1221 is arranged opposite to the first channel 1240, and the axis of the second communicating port 1221 coincides with the axis of the first channel 1240. Furthermore, the axes of the first channel 1240, the second channel 1120, and the first through hole 1410 coincide. A seal is provided between the first wall 1110 and the bottom wall of the connecting plate body 1400 to prevent the refrigerant in the second channel 1120 from leaking from the connection between the first wall 1110 and the connecting plate body 1400. Similarly, a seal is provided between the second wall 1220 and the upper wall of the connecting plate body 1400 to prevent the refrigerant in the first channel 1240 from leaking from the connection between the second wall 1220 and the connecting plate body 1400. The seals are usually distributed around the first connecting port 1111 and the second connecting port 1221.

[0057] The valve opening 1350 is located in the first through-hole 1410, and a seal is formed between the outer wall of the valve opening 1350 and the inner wall of the first through-hole 1410. The sealing method of the valve opening 1350 and the first through-hole 1410 can be to place a sealing ring therebetween. In this case, the first sealing surface 1352 is formed on the side wall of the valve opening 1350, and the second sealing surface 1353 is formed on the inner wall of the first through-hole 1410. During installation, after the first valve body 1310 is welded to the first plate 1140, the valve opening 1350, the valve seat 1370, and the valve needle are assembled into one piece and then inserted into the first through-hole 1311 of the first valve body. The valve opening 1350 is inserted into the first through-hole 1410, and the sealing ring is disposed between the first sealing surface 1352 and the second sealing surface 1353. The valve seat 1370 is threadedly fixed to the first valve body 1310. In other embodiments, the first wall 1110 includes a flange facing the second heat exchange portion, the wall of the first communication port 1111 includes the flange of the first wall 1110, 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 exchange portion, the wall of the second communication port 1221 includes the flange of the second wall 1220, 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. In this case, the valve port 1350 is accommodated in the first communication port 1111 and the second communication port 1221. In this case, 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 / or the flange of the second wall 1220, or on the inner wall of the first through-hole.

[0058] See also Figure 19 , the thermal management device may not be provided with a separate connecting plate 1400, the valve port portion 1350 is located in the first communication port 1111 and the second communication port 1221, the outer wall of the valve port portion 1350 is sealed with the inner wall of the first communication port 1111 and the inner wall of the second communication port 1221, of course, in order to increase the sealing surface or to increase the fixing strength, such as Figure 19 c. The wall of the first connecting port 1111 includes a flange formed on the first wall 1110, and the flange formed on the first wall 1110 faces the second heat exchange part. The second connecting port 1221 includes a flange formed on the second wall 1220, and the flange of the second wall 1220 faces the first heat exchange part. The valve mouth part 1350 is sealed and fixed with the flange formed on the first wall 1110 and the flange formed on the second wall 1220. At this time, the first sealing surface is formed on the side wall of the valve mouth part 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.

[0059] See also Figure 19 b. The flange formed on the first wall 1110 protrudes away from the first heat exchange part, and the flange formed on the second wall 1220 also protrudes away from the first heat exchange part 1100. The flange of the first wall 1110 is located in the second connecting port 1221, and the flange of the first wall 1110 and the flange of the second wall 1220 are sealed. In this way, the flange of the first wall 1110 and the flange of the second wall 1220 form a space to accommodate the valve mouth part 1350, and the valve mouth part 1350 is sealed and fixed to the flange of the first wall 1110. At this time, the first sealing surface is formed on the side wall of the valve mouth part 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 opening portion 1350 are separate components, the gap between the valve opening portion and the guide portion serves as a channel connecting the second channel and the valve opening. The valve opening portion 1350 can be welded to the walls of the first communication opening 1111 and the walls of the second communication opening 1221 for a seal. If the valve opening portion 1350 and the guide portion 1380 are integrally formed, the valve opening portion 1350 can be inserted into the first communication opening 1111 and the second communication opening 1221. A sealing member, such as a sealing ring, is provided between the valve opening portion 1350 and the flange of the first wall 1110, and a sealing member, such as a sealing ring, is provided between the valve opening portion 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 exchange part, and the flange formed on the second wall 1220 also protrudes toward the first heat exchange part 1100. The flange of the first wall 1110 and the flange of the second wall 1220 form a space to accommodate the valve mouth part 1350, which will not be described in detail.

[0060] See also Figure 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 together. The upper wall of the valve port 1350 is sealed together with the first wall 1110. In this case, the first sealing surface is formed on the upper wall of the valve port 1350, and the second sealing surface is formed on the first wall 1110. In this case, the valve port 1350 is located in the second channel. Of course, the valve port 1350 can also be located in the first channel. In this case, 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 can also be formed on the inner wall of the valve port 1350. 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.

[0061] See also Figure 20 The thermal management device 1000 includes a connecting plate 1400, which includes a first through hole 1410. The first through hole 1410 has openings on the upper wall and the bottom wall of the connecting plate. The opening of the first through hole 1410 on the upper wall of the connecting plate is arranged opposite to the second communication port 1221, and the opening of the first through hole 1410 on the bottom wall of the connecting plate is arranged opposite to the first communication port 1111. The first through hole 1410 includes a small diameter portion and a large diameter portion. The space enclosed by the small diameter portion forms the valve port 1351 of the throttling unit. In this case, the guide portion 1380 is provided separately from the entity forming the valve port. The gap formed between the guide portion 1380 and the first plate forms a channel connecting the second channel and the valve port. The valve port 1351 is provided integrally with the connecting plate 1400, or the valve port 1351 is a part of the connecting plate 1400, which can reduce the number of parts and the difficulty of assembly.

[0062] See also Figure 21-23 In this embodiment, the first valve body 1310 is fixedly connected to the second plate body 1210, the second plate body 1210 has an opening for accommodating part of the first valve body 1310, the first through hole 1311 has an opening on the bottom wall of the first valve body and the opening faces the first channel 1240, the first through hole 1311 has a cavity for accommodating the valve mouth portion 1350, and a seal is arranged between the side wall of the valve mouth portion 1350 and the inner wall of the first through hole 1311; the fourth flow channel is located outside the heat exchange core.

[0063] The thermal management device includes a connecting portion, which includes a fourth flow channel. The connecting portion includes a first end 1520 and a second end 1530. Along the axial direction of the first channel, the first end 1520 is located on one side of the heat exchange core and relatively close to the second plate 1210, while the second end is located on the opposite side of the heat exchange core and relatively close to the first plate 1140. Both the first end 1520 and the second end 1530 have openings that communicate with the fourth flow channel. In this embodiment, the connecting portion is a tube 1500, and the fourth flow channel includes a cavity in the tube 1500. The tube 1500 is one form of the connecting portion; a plate or block can also be used to implement the connecting portion. The thermal management device has a first transition channel 1313 and a second transition channel 1105. The first transition channel 1313 is formed on the first valve body 1310. The first transition channel 1313 is located on the upper side of the second plate body 1210. The first transition channel 1313 has an opening in the wall of the first valve body. The first end 1520 is located in the first transition channel 1313 and is sealed and fixed to the inner wall of the first connecting channel 1313, so that the fourth flow channel is connected to the valve cavity 1330. Second transition channel 1105 is located at one end of second channel 1120 and communicates with second channel 1120. In this embodiment, second transition channel 1105 is located on first plate 1140 or fixedly connected to the first plate. Second end 1530 is located on second transition channel 1105, and the wall of second end 1530 is sealed and fixed to the wall of second transition channel 1105, thereby communicating with the fourth flow channel 1120. Tube 1500 is disposed outside the heat exchange core and has a gap between it and the sidewall of the heat exchange core, which helps reduce heat exchange between the refrigerant in the tube and the refrigerant in the heat exchange core. Tube 1500 can also be fixed to the outer wall of the heat exchange core to enhance the overall mechanical performance of the thermal management device. When a sealing ring is used to seal the wall of the first end 1520 and the wall of the first transition channel 1313, and a sealing ring is used to seal the wall of the second end 1530 and the wall of the second transition channel 1105, the tube body 1500 can be installed by plugging, which is a relatively convenient installation method. Of course, the tube body can also be installed by welding and sealing.

[0064] In a specific embodiment, see Figure 22The first plate body 1140 includes a plate body portion 1144 and a raised portion 1141. The plate body portion 1144 is roughly parallel to the plate. The second transition channel has an opening facing the second channel on the upper wall of the plate body portion. The raised portion 1141 protrudes from the heat exchange core relative to the plate body portion 1144. The raised portion 1141 can be an integral structure with the plate body portion 1144 or welded as a whole. The second transition channel 1105 has a first connection port 1142 and a second connection port 1143 on the raised portion 1141. The first connection port 1142 is located on the side wall of the raised portion 1141, and the second connection port 1143 faces the second channel 1120. The second end portion 1530 is sealed and fixed to the wall of the first connection port 1142. Second channel 1120 communicates with the lumen of tube body 1500 via second connecting channel 1105, and further with valve chamber 1330 of the throttling unit. Second connection port 1143 can also be connected to other external components. In this case, the second connection port also serves as third outlet 1005, allowing second channel 1120 to communicate with other components. Second transition channel 1105 may also have only first connection port 1142 on the raised portion. First connection port 1142 may face second channel 1120 and be located on the sidewall of the raised portion. Furthermore, first plate 1140 does not include a raised portion and will not be described in detail.

[0065] Combine Figure 23 The thermal management device includes a connecting plate 1400, which is located between the first heat exchange portion 1100 and the second heat exchange portion 1200 along the axial direction of the first channel 1240. The connecting plate 1400 includes a second transition channel 1105, or rather, the second transition channel 1105 is formed in the connecting plate. The connecting plate 1400 has a first connecting wall, which contacts and is fixed to the first wall 1110. The second transition channel 1105 has an opening in the first connecting wall of the connecting plate 1400 that communicates with the second channel 1120. The second transition channel 1105 has a first connection port 1142 in the second connecting wall of the connecting plate 1400. The first connecting wall and the second connecting wall intersect, and the second connecting wall is substantially perpendicular to the plates of the heat exchange core. The third outlet 1005 of the thermal management device is formed in the first plate 1140 or in a raised portion fixedly connected to the first plate. The third outlet 1005 communicates with the second channel. The connecting portion also includes a main body portion 1510, which is roughly parallel to the side wall of the heat exchange core. The main body portion 1510 is located between the first end portion 1520 and the second end portion 1530. Between the main body portion 1510 and the first end portion 1520, the connecting portion also has at least one first bend 1540, and between the main body portion 1510 and the second end portion 1530, the connecting portion also has at least one second bend 1550, so that the working medium can flow more smoothly.

[0066] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A thermal management device, comprising a communication portion, a valve port portion, a first valve body, and a heat exchange core, wherein the heat exchange core comprises a plurality of stacked plates, a first plate body, and a second plate body, wherein the plates are located 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 portion and a second heat exchange portion, wherein the first heat exchange portion comprises the first plate body, and the second heat exchange portion comprises the second plate body; the thermal management device comprises a refrigerant flow channel and a coolant flow channel, wherein the coolant flow channel is formed in the second heat exchange portion, and the refrigerant flow channel comprises a first flow channel, a second flow channel, a third flow channel, and a fourth flow channel. , the fourth flow channel includes a cavity of the communication portion, the third flow channel is formed in the second heat exchange portion, the third flow channel includes a first hole, the first flow channel and the second flow channel are formed in the first heat exchange portion, and the first flow channel includes a second hole; the refrigerant in the first flow channel and the refrigerant in the second flow channel can exchange heat in the first heat exchange portion, and the refrigerant in the third flow channel and the coolant in the coolant flow channel can exchange heat in the second heat exchange portion; the valve port portion is fixed to the first valve body, the first valve body is fixed to the second plate body, and the second plate body has an opening for the refrigerant to flow from the valve port portion into the first hole; The thermal management device includes a first transition channel and a second transition channel, the first transition channel is formed in the first valve body, the second transition channel is located at one end of the second channel and is connected to the second channel, the wall of the first transition channel cooperates with the wall of the first end of the connecting portion, and the wall of the second transition channel cooperates with the wall of the second end of the connecting portion; at least part of the connecting portion is arranged on the outside of the heat exchange core.

2. The thermal management device according to claim 1, characterized in that The connecting portion includes a main body, the first end portion is sealed against the wall of the first transition channel, and the second end portion is sealed against the wall of the second transition channel; there is at least one bend between the first end portion and the main body, and there is at least one bend between the second end portion and the main body, the main body is parallel to the side wall of the heat exchange core, and there is a set gap between the main body and the side wall of the heat exchange core.

3. The thermal management device according to claim 2, characterized in that: The thermal management device includes a connecting plate body, which is located between the first heat exchange part and the second heat exchange part along the axial direction of the first channel. The connecting plate body includes a second transition channel, and the second transition channel has an opening connected to the second channel at a first connecting wall of the connecting plate body. The first connecting wall is fixed to the first heat exchange part, and the second transition channel has an opening at the second connecting wall of the connecting plate body. The first connecting wall and the second connecting wall are arranged to intersect.

4. The thermal management device according to claim 2, characterized in that: The second transition channel is formed on the first plate body, and has an opening facing the second channel on the upper wall of the first plate body. The second transition channel has at least a first connecting port on the first plate body, and the wall of the first connecting port is fixed to the second end.

5. The thermal management device according to claim 4, characterized in that: The first plate body includes a protrusion and a plate body, the second transition channel has an opening facing the second channel in the plate body, the protrusion and the plate body are fixedly connected or the protrusion and the plate body are integrally formed, along the axial direction of the first channel, the protrusion extends back to the plate body, and the first connection port is formed on the protrusion.

6. The thermal management device according to claim 5, characterized in that The second transition channel further has a second connection port on the first plate body, the second connection port is formed on the protrusion, one of the first connection port and the second connection port is formed on the end wall of the protrusion, and the other is formed on the side wall of the protrusion.

7. The thermal management device according to claim 6, characterized in that: The connecting portion is a tube body, a gap for accommodating a seal is provided between the outer wall of the second end portion and the inner wall of the first connecting port, a gap for accommodating a seal is provided between the outer wall of the first end portion and the inner wall of the first transition channel, and the seal is a sealing ring.

8. The thermal management device according to claim 7, characterized in that: The thermal management device includes a first inlet, a second inlet, a first outlet, and a second outlet; the third flow channel also includes a sixth hole channel and a first inter-plate channel of the second heat exchange part, the first inter-plate channel of the second heat exchange part connects the first hole channel and the sixth hole channel; the second flow channel includes a third hole channel, a fourth hole channel and the first inter-plate channel of the first heat exchange part, the first inter-plate channel of the first heat exchange part connects the third hole channel and the fourth hole channel, and the first outlet connects the fourth hole channel; the first flow channel also includes a fifth hole channel and a second inter-plate channel of the first heat exchange part, the second inter-plate channel of the first heat exchange part connects the fifth hole channel and the second hole channel, and the first inlet connects the fifth hole channel; the coolant flow channel includes a seventh hole channel, an eighth hole channel and a second inter-plate channel of the second heat exchange part, the second inter-plate channel of the second heat exchange part connects the seventh hole channel and the eighth hole channel, the second inlet connects the seventh hole channel, and the second outlet connects the eighth hole channel; The first outlet and the first inlet are located on one side of the thermal management device, and the second outlet and the second inlet are located on the opposite other side of the thermal management device.

9. The thermal management device according to claim 8, characterized in that: The thermal management device also includes a third outlet and a third inlet. The second connecting port forms the third outlet, the third outlet is connected to the second channel, and the third inlet is connected to the fourth channel. The first outlet, the first inlet, the third outlet, and the third inlet are located on the same side of the thermal management device.

10. A thermal management system, comprising a thermal management device, a compressor, and a condenser, wherein the thermal management device is the thermal management device according to any one of claims 1 to 9, the thermal management device comprising a first inlet, a first outlet, a second outlet, and a second inlet, the outlet of the compressor being connected to the first inlet through the condenser, and the first outlet being connected to 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 connected to the second inlet through the first heat exchanger and the pump.

11. The thermal management system according to claim 10, wherein: The thermal management device further includes a third inlet and a third outlet. The thermal management system further includes an evaporator and a throttling element. The third outlet is connected to the third inlet through the throttling element and the evaporator.

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