Heat exchange assembly, electric vehicle heat management system and electric vehicle

Abstract

The utility model provides a heat exchange assembly, electromobile thermal management system and electromobile, the heat exchange assembly includes liquid storage tank, heat exchanger and connecting block, liquid storage tank includes liquid inlet and liquid outlet, heat exchanger includes liquid storage tank access port and liquid storage tank access port. And a first runner and a second runner are arranged in the connecting block. One end of the first flow channel is connected with the liquid storage tank access port, and the other end of the first flow channel is connected with the liquid inlet. One end of the second flow channel is connected with the liquid storage tank outlet, and the other end of the second flow channel is connected with the liquid outlet. The liquid storage tank and the heat exchanger are of an integrated connection structure, so that external pipeline connection is not needed, the space occupation of the liquid storage tank and the heat exchanger is reduced, and the compactness and the integration degree of the system are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger integrated design technical field, concretely relates to a heat exchange subassembly, electric automobile heat management system and electric automobile. BACKGROUND

[0002] Based on current new energy automobile's high speed development, electric automobile heat management system is developing towards the direction of integration and high efficiency, and heat exchanger and liquid storage tank in the electric automobile heat management system become the design focus. UTILITY MODEL CONTENTS

[0003] In view of the above problems existing in prior art, the utility model provides a heat exchange subassembly, electric automobile heat management system and electric automobile to improve the technical problem that the heat exchanger and liquid storage tank are connected through two external pipes, resulting in large equipment space occupation.

[0004] To achieve the above object and other related objects, the utility model provides a heat exchange subassembly, the heat exchange subassembly includes liquid storage tank, heat exchanger and connecting block, the liquid storage tank includes liquid inlet and liquid outlet. The heat exchanger includes liquid storage tank inlet and liquid storage tank outlet. The connecting block is rigidly connected with the liquid storage tank and the heat exchanger, one end of the first flow channel is connected with the liquid storage tank inlet, and the other end of the first flow channel is connected with the liquid inlet. One end of the second flow channel is connected with the liquid storage tank outlet, and the other end of the second flow channel is connected with the liquid outlet.

[0005] In an embodiment of the heat exchange subassembly of the utility model, the heat exchanger includes refrigerant inlet channel and refrigerant discharge channel. One end of the refrigerant inlet channel is provided with a bare refrigerant inlet, and the other end of the refrigerant inlet channel is connected with the liquid storage tank inlet. One end of the refrigerant discharge channel is connected with the liquid storage tank outlet, and the other end of the refrigerant discharge channel is provided with a bare refrigerant outlet.

[0006] In an embodiment of the heat exchange subassembly of the utility model, the heat exchanger further includes first baffle and second baffle. The first baffle is located in the refrigerant inlet channel and separates the refrigerant inlet channel. The second baffle separates the refrigerant inlet channel and the refrigerant discharge channel.

[0007] In the heat exchange assembly one embodiment of the utility model, the heat exchanger still includes first lead pipe and second lead pipe. The first lead pipe is located in the refrigerant discharge channel, one end of the first lead pipe is through the second baffle, to communicate the refrigerant inlet channel, the other end of the first lead pipe is connected the liquid storage tank access. The second lead pipe is located in the refrigerant inlet channel, one end of the second lead pipe is through the second baffle, to communicate the refrigerant discharge channel, the other end of the second lead pipe is connected the refrigerant outlet.

[0008] In the heat exchange assembly one embodiment of the utility model, the refrigerant inlet channel is bent and coiled inside the heat exchanger.

[0009] In the heat exchange assembly one embodiment of the utility model, the connecting block is casted, and the connecting block is welded with the heat exchanger.

[0010] In the heat exchange assembly one embodiment of the utility model, the connecting block is fixedly connected with the liquid storage tank by bolt connecting piece.

[0011] In the heat exchange assembly one embodiment of the utility model, the first flow channel is connected with the liquid inlet, and the first flow channel and the liquid outlet are provided with first sealing rings. The second flow channel is connected with the liquid outlet, and the second flow channel and the liquid outlet are provided with second sealing rings.

[0012] The utility model provides a kind of electric vehicle thermal management system, and the electric vehicle thermal management system includes the heat exchange assembly of any one described above.

[0013] The utility model provides a kind of electric vehicle, and the electric vehicle includes the electric vehicle thermal management system.

[0014] The utility model provides a kind of heat exchange assembly, electric vehicle thermal management system and electric vehicle, by setting connecting block, first flow channel and second flow channel are integrated in connecting block, first flow channel realizes the communication of the liquid inlet of liquid storage tank and the liquid storage tank access of heat exchanger. Second flow channel realizes the communication of the liquid outlet of liquid storage tank and the liquid storage tank access of heat exchanger. And by connecting block, the rigidity connection of liquid storage tank and heat exchanger is realized, and liquid storage tank and heat exchanger are integrated to realize integrated design, so as to not need two external connecting pipeline connection, reduce the space occupation of liquid storage tank and heat exchanger, improve the compactness and integration of system. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other embodiments can also be obtained from these drawings without creative labor.

[0016] Figure 1 It is a structure schematic view of the heat exchange assembly in an embodiment of the present application.

[0017] Figure 2 It is a structure plan view of the heat exchange assembly in an embodiment of the present application.

[0018] Figure 3 It is a structure sectional view of A-A direction of Figure 2

[0019] Figure 4 It is a partial local enlarged schematic view of Figure 3

[0020] Figure 5 It is a structure sectional view of B-B direction of Figure 2

[0021] Figure 6 It is a partial local enlarged schematic view of Figure 5

[0022] Figure 7 It is a front view of the heat exchange assembly in an embodiment of the present application.

[0023] Figure 8 It is a structure sectional view of C-C direction of Figure 7

[0024] Figure 9 It is a partial local enlarged schematic view of Figure 8

[0025] Element number explanation:

[0026] ​​​​​​100, liquid storage tank; 110, liquid inlet; 120, liquid outlet; 200, heat exchanger; 210, refrigerant inlet; 220, refrigerant outlet; 230, liquid storage tank inlet; 240, liquid storage tank outlet; 250, refrigerant inlet channel; 260, refrigerant outlet channel; 270, plate heat exchanger; 271, first compression plate; 272, second compression plate; 273, heat exchange plate; 274, first partition plate; 275, second partition plate; 276, first guide pipe; 277, second guide pipe; 300, connecting block; 310, first flow channel; 311, first plug-in part; 320, second flow channel; 321, second plug-in part; 330, counterbore; 400, bolt connecting piece; 500, first sealing ring; 600, second sealing ring. DETAILED DESCRIPTION

[0027] The above and other advantages and effects of the present application will become readily apparent to those of ordinary skill in the art from the following description in conjunction with the accompanying drawings. The present application can also be applied or implemented in other different embodiments, and the details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present application are used to describe specific embodiments, but are not intended to limit the protection scope of the present application. The test methods in the following embodiments are not specified, and are usually performed according to conventional conditions or according to the conditions recommended by the manufacturers.

[0028] When the embodiments give numerical ranges, it should be understood that, unless otherwise specified by the present application, each numerical range has two endpoints and any numerical value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present application are used by those skilled in the art in the prior art and the description of the present application, and any method, device and material of the prior art similar or equivalent to the method, device and material in the embodiments of the present application can be used to realize the present application.

[0029] It should be understood that the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the specification are only for the convenience of clear description, and are not intended to limit the scope of the present application. The change or adjustment of the relative relationship without substantial change of the technical content is also regarded as the scope of the present application.

[0030] Please refer to Figures 1 to 9To improve the technical problem of large space occupation of the existing heat exchanger and liquid storage tank connected by two external pipelines, the utility model provides a heat exchange assembly, an electric vehicle thermal management system and an electric vehicle. The heat exchange assembly integrates the liquid storage tank and the heat exchanger to realize integrated design, so that two external pipelines are not needed, and the space occupation of the liquid storage tank and the heat exchanger is reduced.

[0031] Please refer to Figures 1 to 9 The utility model provides a heat exchange assembly, the heat exchange assembly includes liquid storage tank 100, heat exchanger 200 and connecting block 300. In the electric vehicle thermal management system, for example, the heat pump air conditioning system, the liquid storage tank 100 is used to store the liquid refrigerant in the heat exchanger 200, that is, the refrigerant. And provide refrigerant to the expansion valve of the heat pump air conditioning system. Through the adjusting effect of the liquid storage tank 100, it can be ensured that the evaporator can obtain suitable refrigerant under different load conditions, so as to improve the refrigeration efficiency of the air conditioning system. The liquid storage tank 100 usually has a drying agent and a filter layer, which can absorb moisture and impurities in the refrigerant, and ensure the cleaning and efficient operation of the system. The liquid storage tank 100 includes a liquid inlet 110 and a liquid outlet 120. The liquid inlet 110 receives high-temperature and high-pressure liquid refrigerant from the heat exchanger 200, and the liquid outlet 120 provides high-temperature and high-pressure liquid refrigerant filtered by drying to the expansion valve. It should be noted that the specific structure and function of the liquid storage tank 100 are well known in the field of electric vehicle thermal management systems, and have wide application, and the liquid storage tank 100 can be obtained by general commercial means.

[0032] The heat exchanger 200 is the condenser of the electric vehicle thermal management system, and the type of the heat exchanger 200 is not limited, which can be all suitable types of condensers for cooling and liquefying the high-temperature and high-pressure gaseous refrigerant, that is, the refrigerant, compressed by the compressor of the electric vehicle thermal management system, such as the heat exchanger 200 can be a tube sheet condenser, a tube belt condenser, a parallel flow condenser, a plate heat exchanger, etc. The heat exchanger 200 usually includes a liquid storage tank inlet 230 and a liquid storage tank outlet 240. The liquid storage tank inlet 230 is used to receive the liquid refrigerant condensed by the heat exchanger 200, and the liquid storage tank outlet 240 is used to receive the refrigerant flowing out of the liquid outlet 120 of the liquid storage tank 100.

[0033] The connecting block 300 is connected integrally with the heat exchanger 200 as a connecting piece of the liquid storage tank 100, and rigidly connects the liquid storage tank 100 and the heat exchanger 200. The rigid connection is not limited, and can be any suitable connection form that meets the stable integrated connection of the liquid storage tank 100 and the heat exchanger 200 through the connecting block 300. For example, it can be a welded connection, a rigid flange connection, a threaded connection, a hard glue connection, etc. The first flow channel 310 and the second flow channel 320 are arranged in the connecting block 300. One end of the first flow channel 310 is connected to the liquid storage tank inlet 230, and the other end of the first flow channel 310 is connected to the liquid inlet 110, so that the liquid coolant after heat exchange by the heat exchanger 200 is introduced into the liquid storage tank 100. One end of the second flow channel 320 is connected to the liquid storage tank outlet 240, and the other end of the second flow channel 320 is connected to the liquid outlet 120, so that the liquid coolant stored in the liquid storage tank 100 is again flowed out through the heat exchanger 200 to supply the expansion valve of the heat pump air conditioning system.

[0034] The rigid connection of the liquid storage tank 100 and the heat exchanger 200 is realized through the connecting block 300, so that the liquid storage tank 100 and the heat exchanger 200 are designed integrally, the space occupation of the liquid storage tank 100 and the heat exchanger 200 is reduced, and the compactness and integration of the electric vehicle thermal management system are improved. By integrating the first flow channel 310 and the second flow channel 320 in the connecting block 300, the first flow channel 310 realizes the communication between the liquid inlet 110 and the liquid storage tank inlet 230, and the second flow channel 320 realizes the communication between the liquid outlet 120 and the liquid storage tank outlet 240, so that the connection of the liquid storage tank 100 and the heat exchanger 200 does not need external pipeline, and the use cost of the external high-pressure pipeline or low-pressure pipeline is reduced. At the same time, the liquid outlet 120 is connected to the heat exchanger 200 again, and the liquid coolant is twice exchanged in the heat exchanger 200, so as to further reduce the temperature of the coolant provided by the liquid storage tank 100 to the expansion valve, increase the supercooling degree of the coolant, and improve the efficiency of the system.

[0035] Please refer to Figures 3 to 6 In an embodiment of the heat exchange assembly of the utility model, the heat exchanger 200 has a coolant inlet channel 250 and a coolant outlet channel 260, and the coolant inlet channel 250 and the coolant outlet channel 260 are not communicated. The heat exchanger 200 further comprises a coolant inlet 210 and a coolant outlet 220. The coolant inlet channel 250 is used as a flow channel for primary heat exchange of the coolant in the heat exchanger 200, one end of the coolant inlet channel 250 is provided with a bare coolant inlet 210, and the other end of the coolant inlet channel 250 is connected to the liquid storage tank inlet 230. The high-temperature and high-pressure gaseous coolant enters the coolant inlet channel 250 through the heat exchanger 200 from the coolant inlet 210, exchanges heat with the cooling liquid in the heat exchanger 200, and finally discharges the liquid coolant from the outlet end of the coolant inlet channel 250, and enters the liquid storage tank 100 through the liquid storage tank inlet 230 and the first flow channel 310.

[0036] The refrigerant discharge channel 260 is a flow channel for the secondary heat exchange of the refrigerant in the heat exchanger 200. One end of the refrigerant discharge channel 260 is connected to the accumulator outlet 240, and the other end of the refrigerant discharge channel 260 is provided with a bare refrigerant outlet 220. The liquid refrigerant flowing out of the accumulator 100 is connected to the accumulator outlet 240 through the second flow channel 320, enters the refrigerant discharge channel 260 from the accumulator outlet 240, and is subjected to secondary heat exchange with the cooling liquid of the heat exchanger 200 in the heat exchanger 200, and finally flows out of the refrigerant outlet 220 into the next component of the electric vehicle thermal management system, such as the expansion valve of the heat pump air conditioning system.

[0037] In order to further reduce the space occupation of the heat exchange assembly in the automobile installation, in an embodiment of the heat exchange assembly of the utility model, the heat exchanger 200 adopts a plate heat exchanger 270. The structure of the plate heat exchanger 270 makes the heat exchanger small in volume and light in weight, and is convenient to install in the automobile with limited space. Compared with other heat exchangers, the plate heat exchanger 270 can be integrated with other components of the automobile air conditioning system, improving the integrated design. At the same time, the plate heat exchanger 270 has high heat exchange efficiency, thereby improving the optimization and promotion of the performance of the whole vehicle.

[0038] In an embodiment of the heat exchange assembly of the utility model, the refrigerant inlet channel 250 is arranged in a bent and coiled manner inside the heat exchanger 200. The design of the bent and coiled refrigerant inlet channel 250 can significantly increase the flow path length of the refrigerant inside the heat exchanger 200, thereby increasing the effective heat exchange area and improving the heat exchange efficiency. Specifically, in the embodiment, please refer to Figure 3 and Figure 6The plate heat exchanger 270 comprises a first pressing plate 271, a second pressing plate 272, and a plurality of heat exchange plates 273 arranged in parallel between the first pressing plate 271 and the second pressing plate 272; a first partition plate 274 and a second partition plate 275 are arranged between the plurality of heat exchange plates 273. The second partition plate 275 divides the refrigerant heat exchange area of the plurality of heat exchange plates 273 into a refrigerant inlet channel 250 and a refrigerant outlet channel 260; the first partition plate 274 divides the upper part of the refrigerant inlet channel 250, and the lower part is provided with an opening, so as to form a bending coiled flow channel. The refrigerant inlet 210 and the refrigerant outlet 220 are located on the first pressing plate 271, wherein the refrigerant inlet 210 is located at the upper part, and the refrigerant outlet 220 is located at the lower part; the liquid tank connection inlet 230 and the liquid tank connection outlet 240 are located on the second pressing plate 272. The second partition plate 275 is connected with the liquid tank connection inlet 230 through a first lead pipe 276, so as to realize the communication between the refrigerant inlet channel 250 and the liquid tank connection inlet 230. The second partition plate 275 is connected with the refrigerant outlet 220 through a second lead pipe 277, so as to realize the sequential communication among the liquid tank connection outlet 240, the refrigerant outlet channel 260 and the refrigerant outlet 220. Through the arrangement of the first lead pipe 276 and the second lead pipe 277, the integrated design of the plate heat exchanger 270 and the liquid tank 100 is further improved. It should be noted that the structure layout and heat exchange principle of the plate heat exchanger are widely used in the heat exchanger field and are well known in the industry, and therefore will not be described in detail here.

[0039] In an embodiment of the heat exchange assembly, the connecting block 300 is a cast part, and the connecting block 300 is welded to the heat exchanger 200. The integral welding of the connecting block 300 and the heat exchanger 200 can provide very strong connection strength, and the formed welded joint can form a continuous sealing interface. Thus, good sealing effect can be achieved between the first flow channel 310 and the liquid tank connection inlet 230, and between the second flow channel 320 and the liquid tank connection outlet 240, thereby reducing the risk of leakage of refrigerant when flowing between the heat exchanger 200 and the connecting block 300, and improving the sealing performance and reliability of the system. Meanwhile, in this embodiment, since the heat exchanger 200 is a plate heat exchanger, the connecting block 300 is welded to the second pressing plate 272 of the plate heat exchanger 270, so that no other connecting structure needs to be designed on the second pressing plate 272 or the connecting block 300, thereby reducing the design complexity and the volume of the connecting block 300. If necessary, the second pressing plate 272 and the connecting block 300 can also adopt an integral casting structure, thereby reducing the manufacturing cost and improving the production efficiency and the integrated design of the heat exchange assembly.

[0040] Since the liquid tank 100 contains components made of nylon material such as a filter screen, in order to avoid damage to the nylon material caused by the integral welding of the connecting block 300 and the heat exchanger 200, and thus damage to the filtering and drying function of the liquid tank 100, please refer to Figure 3 and Figure 8In the heat exchange assembly embodiment of the utility model, connecting block 300 is fixedly connected with liquid storage tank 100 through bolt connecting piece 400. The number and connecting position of bolt connecting piece 400 are not limited, as long as the stable connection of connecting block 300 and liquid storage tank 100 can be met. Specifically, in the embodiment, the number of bolt connecting piece 400 is two groups. Since connecting block 300 is an integral casting, and liquid storage tank 100 is a purchased component, according to the thread hole position on liquid storage tank 100, a countersunk hole 330 can be designed in the block body of corresponding connecting block 300, bolt connecting piece 400 adopts a countersunk bolt, and the countersunk bolt is screwed with the thread hole of liquid storage tank 100 through the countersunk hole 330, so as to realize the rigid connection of connecting block 300 and liquid storage tank 100. At the same time, since the connection between connecting block 300 and liquid storage tank 100 is realized through standard thread connection, when it is necessary to maintain or replace the components of liquid storage tank 100, the disassembly and reassembly can be relatively easily realized, which helps to reduce the maintenance cost and improve the maintenance efficiency.

[0041] Please refer to Figure 3 and Figure 4 In the heat exchange assembly embodiment of the utility model, first flow channel 310 is connected with liquid inlet 110 in plug-in mode, and first sealing ring 500 is arranged between first flow channel 310 and liquid inlet 110. Specifically, in the embodiment, first flow channel 310 includes a first plug-in part 311 extending out of the block body part of connecting block 300. The first plug-in part 311 is connected with liquid inlet 110 in plug-in mode, which simplifies the assembly process of connecting block 300 and liquid storage tank 100, and reduces the installation time and labor intensity. At the same time, first sealing ring 500 is sleeved on the outside of first plug-in part 311, and first sealing ring 500 is clamped between the hole wall of first plug-in part 311 and liquid inlet 110, so as to make up for the possibility of refrigerant leakage caused by the bolt connection of liquid storage tank 100 and connecting block 300.

[0042] Please refer to Figure 5 and Figure 6 In the heat exchange assembly embodiment of the utility model, second flow channel 320 is connected with liquid outlet 120 in plug-in mode, and second sealing ring 600 is arranged between second flow channel 320 and liquid outlet 120. Second flow channel 320 includes a second plug-in part 321 extending out of the block body part of connecting block 300. The second plug-in part 321 is connected with liquid outlet 120 in plug-in mode, which simplifies the assembly process of connecting block 300 and liquid storage tank 100, and reduces the installation time and labor intensity. At the same time, second sealing ring 600 is sleeved on the outside of second plug-in part 321, and second sealing ring 600 is clamped between the hole wall of second plug-in part 321 and liquid outlet 120, so as to make up for the possibility of refrigerant leakage caused by the bolt connection of liquid storage tank 100 and connecting block 300.

[0043] The second aspect of the utility model further provides an electric automobile thermal management system, the electric automobile thermal management system includes the heat exchange assembly of any one of the above, namely the integrated heat exchanger and liquid storage tank of design. It needs to be explained that the electric automobile thermal management system can also include the component of the heat exchange assembly of the utility model, for example, the compressor, evaporator, expansion valve, battery cooler and the conventional component of the existing electric automobile thermal management system, and the connection relationship between the above conventional component and the heat exchange assembly of the utility model and the system working principle are well known in the industry, and here will not be described one by one.

[0044] The third aspect of the utility model further provides an electric automobile, and the electric automobile includes the above electric automobile thermal management system. It needs to be explained that the electric automobile thermal management system can also include the existing conventional component of the above electric automobile thermal management system, and here will not be described one by one.

[0045] In the heat exchange assembly, electric automobile thermal management system and electric automobile of the utility model, the first flow channel and the second flow channel are integrated in the connecting block by arranging the connecting block, the first flow channel realizes the communication of the liquid inlet of the liquid storage tank and the liquid storage tank inlet of the heat exchanger. The second flow channel realizes the communication of the liquid outlet of the liquid storage tank and the liquid storage tank outlet of the heat exchanger. And through the rigid connection of the connecting block, the liquid storage tank and the heat exchanger, the liquid storage tank and the heat exchanger realize integrated design, so that external pipeline connection is not needed, the space occupation of the liquid storage tank and the heat exchanger is reduced, and the compactness and integration of the system are improved. In order to improve the technical problem that the existing heat exchanger and liquid storage tank are connected through external pipeline and cause large overall space occupation of equipment. Therefore, the utility model effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.

[0046] The above embodiment only illustrates the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A heat exchange component, characterized in that, include: A liquid storage tank, the liquid storage tank including an inlet and an outlet; The heat exchanger includes a liquid storage tank inlet and a liquid storage tank outlet; A connecting block, wherein a first flow channel and a second flow channel are provided within the connecting block; The connecting block rigidly connects the liquid storage tank and the heat exchanger, and one end of the first flow channel is connected to the inlet of the liquid storage tank, and the other end of the first flow channel is connected to the liquid inlet; one end of the second flow channel is connected to the outlet of the liquid storage tank, and the other end of the second flow channel is connected to the liquid outlet.

2. The heat exchange assembly according to claim 1, characterized in that, The heat exchanger includes a refrigerant inlet channel and a refrigerant outlet channel; one end of the refrigerant inlet channel is provided with an exposed refrigerant inlet, and the other end of the refrigerant inlet channel is connected to the inlet of the liquid storage tank; one end of the refrigerant outlet channel is connected to the outlet of the liquid storage tank, and the other end of the refrigerant outlet channel is provided with an exposed refrigerant outlet.

3. The heat exchange assembly according to claim 2, characterized in that, The heat exchanger also includes: A first partition is located within the refrigerant inlet channel and separates the refrigerant inlet channel. The first partition has an opening to connect the separated refrigerant inlet channel. The second partition separates the refrigerant inlet channel from the refrigerant outlet channel.

4. The heat exchange assembly according to claim 3, characterized in that, The heat exchanger also includes: The first inlet pipe is located in the refrigerant discharge channel. One end of the first inlet pipe passes through the second partition to connect to the refrigerant inlet channel, and the other end of the first inlet pipe is connected to the liquid storage tank inlet. The second inlet pipe is located inside the refrigerant inlet channel. One end of the second inlet pipe passes through the second partition to connect to the refrigerant outlet channel, and the other end of the second inlet pipe is connected to the refrigerant outlet.

5. The heat exchange assembly according to claim 2 or 3, characterized in that, The refrigerant inlet channel is arranged in a winding and coiled manner inside the heat exchanger.

6. The heat exchange assembly according to claim 1 or 3, characterized in that, The connecting block is a casting, and it is welded to the heat exchanger.

7. The heat exchange assembly according to claim 6, characterized in that, The connecting block is fixedly connected to the liquid storage tank by bolts.

8. The heat exchange assembly according to claim 7, characterized in that, The first flow channel is plugged into the liquid inlet, and a first sealing ring is provided between the first flow channel and the liquid outlet; the second flow channel is plugged into the liquid outlet, and a second sealing ring is provided between the second flow channel and the liquid outlet.

9. A thermal management system for an electric vehicle, characterized in that, Includes the heat exchange component according to any one of claims 1 to 8.

10. An electric vehicle, characterized in that, Includes the electric vehicle thermal management system as described in claim 9.

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