An automobile thermal management system adopting an integrated heat exchange module

Abstract

The application discloses a kind of automobile thermal management systems using integrated heat exchange module, including integrated valve plate, nine through water valve, cold air water pump and battery water pump are communicated and installed in one side of integrated valve plate, integrated heat exchange module and warm air water pump are installed in the other side of integrated valve plate, compressor is directly connected and installed in one end of integrated heat exchange module, integrated heat exchange module includes high-temperature heat exchange zone, medium-temperature heat exchange zone and low-temperature heat exchange zone are sequentially stacked and arranged, top plate is installed in one side of low-temperature heat exchange zone, expansion valve assembly is installed on top plate, high-temperature heat exchange zone and low-temperature heat exchange zone are communicated with integrated valve plate, compressor is connected with expansion valve assembly through first heat exchange flow channel and second heat exchange flow channel inside integrated heat exchange module and forms circulation flow path.The application does not need to be connected by external pipeline, greatly reduces the cost of part production and manufacturing detection, greatly reduces the installation support of whole vehicle end, connecting pipeline, bolt and man-hour cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile thermal management systems, in particular to an automobile thermal management system adopting an integrated heat exchange module. BACKGROUND

[0002] The electric automobile thermal management system affects the safety, endurance, energy consumption and comfort of the whole vehicle, and has become one of the core technologies of new energy vehicles. With the development of new technologies such as wide-temperature-range heat pumps and R290 (propane) systems, water-source heat pump systems for new energy vehicles have begun to be promoted by the industry due to their high efficiency. The existing water-source architecture system contains at least two or more plate heat exchangers: a water-cooled condenser and a Chiller (battery cooler). In addition, the R290 system provides system heat exchange efficiency and increases the intermediate heat exchanger (IHX). Since each heat exchanger has a refrigerant and coolant channel inside, and the water-cooled condenser is a high-temperature and high-pressure refrigerant, and the Chiller is a low-temperature and low-pressure refrigerant, all current heat exchangers exist independently and are connected by air conditioning lines and water pipes or their own refrigerant flow channels or water flow channels. The R290 (propane) is flammable and explosive, and the less the amount of refrigerant added, the safer it is, so the amount of refrigerant added must be strictly controlled. Traditional thermal management systems already have integrated module products to reduce the air conditioning lines and water pipes of the whole vehicle to reduce the amount of refrigerant and coolant added. However, the refrigerant side flow channel plate and the compressor still need to be connected to the condenser and Chiller through air conditioning lines, which results in the need for three heat exchangers to be produced, assembled, welded and tested independently at the supplier, especially the compressor, which also needs to be connected to the three heat exchangers. In addition, the three independent parts need to be connected by lines and corresponding bolt supports, which increases the cost of parts and the length of the lines, which increases the amount of refrigerant added. Therefore, a heat exchanger module that integrates the three heat exchangers is needed to solve the above problems. SUMMARY

[0003] The present application provides an automobile thermal management system adopting an integrated heat exchange module, which can solve the problem of complex installation structure and line structure caused by the need for three independent heat exchangers in the existing automobile thermal management system.

[0004] In order to achieve the above object, the present application provides the following technical scheme: a kind of automobile thermal management system using integrated heat exchange module, including integrated valve plate, one side of the integrated valve plate is connected and installed nine-way water valve, cold air water pump and battery water pump, the other side of the integrated valve plate is installed integrated heat exchange module and warm air water pump, one end of the integrated heat exchange module is directly connected and installed compressor, the integrated heat exchange module includes high-temperature heat exchange zone, medium-temperature heat exchange zone and low-temperature heat exchange zone are sequentially stacked, one side of the low-temperature heat exchange zone is installed top plate, expansion valve assembly is installed on the top plate, the high-temperature heat exchange zone, medium-temperature heat exchange zone and low-temperature heat exchange zone are all stacked by sheet and are formed with the first heat exchange flow channel and the second heat exchange flow channel that are alternately and independently between adjacent sheets, the high-temperature heat exchange zone and low-temperature heat exchange zone are connected with integrated valve plate, the first heat exchange flow channel and the second heat exchange flow channel in the integrated heat exchange module are connected with expansion valve assembly to form circulation flow path, the refrigerant in the compressor flows into expansion valve assembly from the first heat exchange flow channel of high-temperature heat exchange zone and medium-temperature heat exchange zone in sequence, and then flows back to the compressor through the second heat exchange flow channel of medium-temperature heat exchange zone and low-temperature heat exchange zone in sequence, the second heat exchange flow channel of the high-temperature heat exchange zone is connected with warm air water pump and external warm air core, the first heat exchange flow channel of the low-temperature heat exchange zone is connected with cold air water pump and external cold air core, one side of the integrated valve plate is also provided with first external connector for connecting warm air core and nine-way water valve, second external connector for connecting battery and battery water pump, third external connector for connecting battery and nine-way water valve, fourth external connector and fifth external connector for connecting radiator and nine-way water valve, sixth external connector for connecting motor and nine-way water valve, seventh external connector for connecting cold air core and nine-way water valve, so that the compressor and the integrated heat exchange module are not connected by pipeline, the integrated heat exchange module and the integrated valve plate are integrated together, and do not need to be connected by pipeline, the integrated valve plate integrates multiple external connectors and multiple water pumps, and realizes multiple working modes of thermal management system through line switching of nine-way water valve, small in size, less in pipeline and not easy to leak.

[0005] As preferred, the second heat exchange flow channel in the high-temperature heat exchange area is connected with the low-temperature cooling water inlet channel and the high-temperature cooling water outlet channel, and the first heat exchange flow channel in the high-temperature heat exchange area is connected with the high-temperature coolant inlet channel and the high-temperature coolant outlet channel; the first heat exchange flow channel in the medium-temperature heat exchange area is connected with the first medium-temperature heat exchange channel on both sides of the medium-temperature heat exchange area, and the second heat exchange flow channel in the medium-temperature heat exchange area is connected with the second medium-temperature heat exchange channel on both sides of the medium-temperature heat exchange area; the first heat exchange flow channel in the low-temperature heat exchange area is connected with the cooling water inlet channel and the cooling water outlet channel, the second heat exchange flow channel in the low-temperature heat exchange area is connected with the first transition channel and the second transition channel, the first transition channel is connected with the outlet of the expansion valve assembly, the second transition channel is connected with one of the second medium-temperature heat exchange channels, and the other second medium-temperature heat exchange channel is connected with the low-temperature coolant outlet channel in the high-temperature heat exchange area; one of the first medium-temperature heat exchange channels is connected with the high-temperature coolant outlet channel, and the other first medium-temperature heat exchange channel is connected with the first straight-through channel in the low-temperature heat exchange area, which is connected with the inlet of the expansion valve assembly. By designing the internal channels of the high-temperature heat exchange area, the medium-temperature heat exchange area and the low-temperature heat exchange area, the three areas are integrated together without the need for external pipelines for connection, which reduces the amount of coolant added and solves the problem of complex installation structure and pipeline structure caused by the need for three independent heat exchangers.

[0006] As preferred, the first partition plate is arranged between the high-temperature heat exchange area and the medium-temperature heat exchange area, and the second partition plate is arranged between the medium-temperature heat exchange area and the low-temperature heat exchange area. By arranging the first partition plate and the second partition plate, the three heat exchange areas can be separated, and the corresponding channels that need to be isolated can also be isolated.

[0007] As preferred, fins are arranged in the first heat exchange flow channel and the second heat exchange flow channel, which can improve the heat exchange efficiency.

[0008] As preferred, the expansion valve assembly includes a pressing block arranged on the top plate and an expansion valve arranged at one end of the pressing block, and the first straight-through channel and the first transition channel are connected with the inner sides of both ends of the pressing block, respectively. The expansion valve is integrated into the heat exchanger through the pressing block, and the pressing block also functions as a valve seat to limit the inlet and outlet, facilitating the butt joint with the first straight-through channel and the first transition channel. In addition, the end of the pressing block is connected with the integrated valve plate, which can improve the installation and fixing strength of the integrated heat exchange module.

[0009] As preferred, the cooling water outlet channel is connected with the integrated valve plate through a first connecting elbow, and the low-temperature cooling water inlet channel is connected with the integrated valve plate through a second connecting elbow. The first connecting elbow and the second connecting elbow can realize the firm and reliable connection between the integrated heat exchange module and the integrated valve plate, and the sealing performance is better than that of conventional pipelines.

[0010] As preferred, the side of the high-temperature heat exchange area is provided with a bottom plate, the outer side of the bottom plate is connected with a mounting plate, the edge of the mounting plate is connected with the compressor through a plurality of connecting columns, the connecting columns can be in an integrated structure with the compressor or in a split structure, the compressor does not need to be provided with other mounting supports, and the connecting structure is simple.

[0011] As preferred, the compressor is provided with a first communication seat communicated with the high-temperature refrigerant inlet channel and a second communication seat communicated with the low-temperature refrigerant outlet channel, the first communication seat and the second communication seat are in an integrated structure with the compressor, the connecting strength between the compressor and the integrated heat exchange module can be improved, and the risk of leakage can be reduced.

[0012] As preferred, the first transition channel and the second transition channel are arranged side by side on one side of the low-temperature heat exchange area, the cooling water inlet channel and the cooling water outlet channel are arranged side by side on the other side of the low-temperature heat exchange area, the plate pieces in the low-temperature heat exchange area include first low-temperature heat exchange plate pieces and second low-temperature heat exchange plate pieces in a staggered superposition mode, the first low-temperature heat exchange plate pieces are provided with first separation protruding ribs at positions between the first transition channel and the second transition channel, the second low-temperature heat exchange plate pieces are provided with second separation protruding ribs matched with the first separation protruding ribs at positions between the cooling water inlet channel and the cooling water outlet channel, and the first separation protruding ribs are embedded into embedding grooves in the middle of the second separation protruding ribs, the first separation protruding ribs and the second separation protruding ribs can form U-shaped and opposite flow channels on the first heat exchange flow channels and the second heat exchange flow channels of the low-temperature heat exchange area respectively, the heat exchange efficiency between the cooling water and the low-temperature low-pressure refrigerant can be improved, and the first transition channel and the second transition channel can be arranged close to the expansion valve to facilitate the formation of a loop.

[0013] As preferred, the edges of the plate pieces, the first partition plate and the second partition plate are all provided with protruding mark parts, and the positions of the mark parts on the high-temperature heat exchange area, the medium-temperature heat exchange area, the low-temperature heat exchange area, the first partition plate and the second partition plate are all different, the high-temperature heat exchange area, the medium-temperature heat exchange area, the low-temperature heat exchange area, the first partition plate and the second partition plate can be quickly distinguished through the mark parts in different positions, and the installation mistake can be avoided during installation.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] The integrated heat exchange module is integrated by designing internal channels of the high-temperature heat exchange zone, the medium-temperature heat exchange zone and the low-temperature heat exchange zone, and the expansion valve is integrated on the heat exchanger to form a three-in-one heat exchanger integrated module, so that the compressor, the water-cooled condenser, the intermediate heat exchanger, the EXV and the Chiller of the refrigerant circuit are integrated, no air conditioning pipeline is needed, the refrigerant can be directly filled at the factory, the customer end does not need to be filled, the filling amount of the R290 refrigerant can be controlled to the extreme, the connection interface is reduced, the leakage risk is greatly reduced, the whole vehicle end installation support, the connection pipeline, the bolt and the working hour cost are greatly reduced, the flow resistance is smaller, and the efficiency is higher. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole perspective structural diagram of the application;

[0017] Figure 2 It is a whole perspective structural diagram of the application;

[0018] Figure 3 It is a perspective structural diagram of the integrated heat exchange module of the application;

[0019] Figure 4 It is a top view structural diagram of the integrated heat exchange module of the application;

[0020] Figure 5 It is an A-A sectional view structural diagram of Figure 4 ;

[0021] Figure 6 It is a module exploded perspective structural diagram of the integrated heat exchange module of the application;

[0022] Figure 7 It is a refrigerant flow circulation schematic diagram of the integrated heat exchange module of the application;

[0023] Figure 8 It is a cooling water flow circulation schematic diagram of the integrated heat exchange module of the application;

[0024] Figure 9 It is a perspective structural diagram of the first low-temperature heat exchange plate of the application;

[0025] Figure 10 It is a perspective structural diagram of the second low-temperature heat exchange plate of the application;

[0026] Figure 11 It is a whole circuit principle diagram of the application;

[0027] Figure 12 It is a first and second working mode principle diagram of the application;

[0028] Figure 13 It is a third working mode principle diagram of the application;

[0029] Figure 14 The fourth working mode principle diagram of the present application;

[0030] Figure 15 The fifth working mode principle diagram of the present application.

[0031] Reference signs:

[0032] 1, integrated valve plate, 2, integrated heat exchange module, 3, nine-way water valve, 4, compressor, 5, cold air water pump, 6, expansion valve, 8, warm air water pump, 9, first connecting elbow, 10, second connecting elbow, 11, second communication seat, 12, connecting column, 14, first communication seat, 16, fin, 17, pressing block, 18, marking part, 19, top plate, 21, first external connector, 22, seventh external connector, 23, second external connector, 24, battery water pump, 25, sixth external connector, 26, fifth external connector, 27, fourth external connector, 28, third external connector, 31, mounting plate, 119, first partition plate, 110, second partition plate, 112, high-temperature cooling water outlet channel, 113, high-temperature refrigerant outlet channel, 114, low-temperature refrigerant outlet channel, 115, low-temperature cooling water inlet channel, 116, high-temperature refrigerant inlet channel, 117, bottom plate, 122, first medium-temperature heat exchange channel, 123, second medium-temperature heat exchange channel, 131, cooling water inlet channel, 132, cooling water outlet channel, 133, first transition channel, 134, second transition channel, 135, first straight-through channel, 136, first low-temperature heat exchange plate, 361, first partitioning rib, 362, second partitioning rib, 363, embedding groove, 137, second low-temperature heat exchange plate, A, high-temperature heat exchange area, B, medium-temperature heat exchange area, C, low-temperature heat exchange area. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0034] In the automobile thermal management system, the compressor, the water-cooled condenser, the intermediate heat exchanger, the Chiller (cooler), and the refrigerant and the cooling water cooperate with each other to jointly realize temperature control of automobile related components. Specifically, the compressor is one of the core components of the automobile thermal management system, and its main function is to compress low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas, thereby increasing the pressure and temperature of the refrigerant and providing power for the circulation of the refrigerant in the system. For example, when the automobile air conditioner refrigeration is turned on, the compressor starts to suck the low-temperature and low-pressure refrigerant vapor from the evaporator, and after compression, the high-temperature and high-pressure refrigerant vapor is discharged, thereby preparing for the subsequent heat exchange process.

[0035] In the prior art, the water-cooled condenser, the intermediate heat exchanger and the Chiller are all independent heat exchangers, and each of the three heat exchangers has its own shell, pipeline and other structures, which need to be arranged separately in the limited space of the automobile, occupying a large space position, which is not conducive to the effective use of the internal space of the automobile, especially for small cars or new energy cars, the space occupied by the battery and other components is large, and the difficulty of space layout is greater.

[0036] The independent structure means that each heat exchanger has its own support, fixing and other components, and the overall weight is relatively large. This will increase the curb weight of the automobile, and then affect the fuel economy of the automobile or the cruising range of the electric automobile. For modern automobiles that pursue lightweight to improve performance and efficiency, additional weight is a disadvantage. Independent production of three heat exchangers requires separate investment in production equipment, molds and other resources, and the production process is relatively complex, the number of parts is large, resulting in increased manufacturing costs, and in the automobile assembly process, the three heat exchangers need to be installed, connected with pipelines and lines, and other operations, the installation process is complicated, increasing the labor cost and installation time, and the complex installation process may increase the probability of failure.

[0037] Therefore, in order to solve the above technical problems, such as Figures 1-11As shown, the technical scheme is provided as follows: an automobile thermal management system adopting an integrated heat exchange module, comprising an integrated valve plate 1, one side of the integrated valve plate 1 being communicated and mounted with a nine-way water valve 3, a cold air water pump 5 and a battery water pump 24, the other side of the integrated valve plate 1 being mounted with the integrated heat exchange module 2 and a warm air water pump 8, one end of the integrated heat exchange module 2 being directly connected and mounted with a compressor 4, the integrated heat exchange module 2 comprising a high-temperature heat exchange area A, a medium-temperature heat exchange area B and a low-temperature heat exchange area C which are sequentially and superposedly arranged, one side of the low-temperature heat exchange area C being mounted with a top plate 19, the top plate 19 being mounted with an expansion valve assembly, the high-temperature heat exchange area A, the medium-temperature heat exchange area B and the low-temperature heat exchange area C all being composed of laminated plates 16 and forming mutually alternating and independent first heat exchange flow channels and second heat exchange flow channels between adjacent plates 16, the high-temperature heat exchange area A and the low-temperature heat exchange area C being communicated with the integrated valve plate 1, the compressor 4 and the expansion valve assembly together forming a circulating flow path through the first heat exchange flow channels and the second heat exchange flow channels inside the integrated heat exchange module 2, refrigerant in the compressor 4 sequentially flows from the first heat exchange flow channels of the high-temperature heat exchange area A and the medium-temperature heat exchange area B into the expansion valve assembly, and then sequentially flows through the second heat exchange flow channels of the medium-temperature heat exchange area B and the low-temperature heat exchange area C to return to the compressor 4, the second heat exchange flow channels of the high-temperature heat exchange area A being communicated with the warm air water pump 8 and an externally connected warm air core, the first heat exchange flow channels of the low-temperature heat exchange area C being communicated with the cold air water pump 5 and an externally connected cold air core, one side of the integrated valve plate 1 further being provided with a first external connector 21 for connecting the warm air core and the nine-way water valve 3, a second external connector 23 for connecting the battery and the battery water pump 24, a third external connector 28 for connecting the battery and the nine-way water valve 3, a fourth external connector 27 and a fifth external connector 26 for connecting the radiator and the nine-way water valve 3, a sixth external connector 25 for connecting the motor and the nine-way water valve 3, and a seventh external connector 22 for connecting the cold air core and the nine-way water valve 3, so that the compressor 4 and the integrated heat exchange module 2 are not connected through a pipeline, the integrated heat exchange module 2 and the integrated valve plate 1 are integrated together and do not need to be connected through a pipeline, the integrated valve plate 1 integrates multiple external connectors and multiple water pumps together, line switching is performed through the nine-way water valve 3, multiple working modes of the thermal management system are realized, the volume is small, the pipeline is less, and leakage is not easy to occur.

[0038] Specifically, the high-temperature heat exchange area A corresponds to a water-cooled condenser, the medium-temperature heat exchange area B corresponds to an intermediate heat exchanger, and the low-temperature heat exchange area C corresponds to a Chiller battery cooler, different media flow through the first heat exchange flow channels and the second heat exchange flow channels, heat exchange is performed between different media, and the flow directions of the media in the first heat exchange flow channels and the second heat exchange flow channels are opposite.

[0039] The nine-way water valve 3 is arranged in the middle of one side of the integrated valve plate 1, and the first external connector 21, the second external connector 23, the third external connector 28, the fourth external connector 27, the fifth external connector 26, the sixth external connector 25 and the seventh external connector 22 are arranged around the nine-way water valve 3, so as to facilitate the rotation of the valve core of the nine-way water valve 3 to switch the pipeline.

[0040] The other side of the integrated valve plate 1 only needs to be provided with the integrated heat exchange module 2 and the heater water pump 8, and if the space of the integrated valve plate 1 is sufficient, the heater water pump 8 and the battery water pump 24 can also be arranged on one side of the integrated heat exchange module 2.

[0041] In the embodiment, the plates 16 in the high-temperature heat exchange area A, the medium-temperature heat exchange area B and the low-temperature heat exchange area C are arranged in pairs, and each pair of plates 16 is slightly different in structure in order to form the first heat exchange flow channel and the second heat exchange flow channel which are alternated and independent and to realize the shuttling loop of the refrigerant in the three heat exchange areas. Specifically, in order to further integrate the high-temperature heat exchange area A, the medium-temperature heat exchange area B and the low-temperature heat exchange area C, the second heat exchange flow channel in the high-temperature heat exchange area A is connected with the low-temperature cooling water inlet channel 115 and the high-temperature cooling water outlet channel 112, and the first heat exchange flow channel in the high-temperature heat exchange area A is connected with the high-temperature refrigerant inlet channel 116 and the high-temperature refrigerant outlet channel 113. The high-temperature refrigerant inlet channel 116 is used to connect the high-temperature refrigerant from the compressor, and the first heat exchange flow channel circulates the low-temperature cooling water to exchange heat with the high-temperature refrigerant, so as to reduce the temperature of the high-temperature refrigerant;

[0042] The first heat exchange flow channel in the medium-temperature heat exchange area B is connected with the first medium-temperature heat exchange channel 122 located on both sides of the medium-temperature heat exchange area B, and the second heat exchange flow channel in the medium-temperature heat exchange area B is connected with the second medium-temperature heat exchange channels 123 respectively located on both sides of the medium-temperature heat exchange area B, so as to further reduce the temperature of the high-temperature refrigerant and increase the temperature of the low-temperature refrigerant returned from the low-temperature heat exchange area C;

[0043] The first heat exchange flow channel in the low-temperature heat exchange area C is connected with the cooling water inlet channel 131 and the cooling water outlet channel 132, and the second heat exchange flow channel in the low-temperature heat exchange area C is connected with the first transition channel 133 and the second transition channel 134. The first transition channel 133 is connected with the outlet of the expansion valve assembly, and the second transition channel 134 is connected with one of the second medium-temperature heat exchange channels 123. The other second medium-temperature heat exchange channel 123 is connected with the low-temperature refrigerant outlet channel 114 in the high-temperature heat exchange area A. The low-temperature low-pressure refrigerant in the low-temperature heat exchange area C exchanges heat with the cooling water entering from the cooling water inlet channel 131 to absorb the heat of the cooling water and completely evaporate into low-temperature low-pressure gaseous refrigerant after the pressure of the expansion valve assembly is reduced;

[0044] One of the first medium-temperature heat exchange channels 122 is in communication with the high-temperature refrigerant outlet channel 113, and the other first medium-temperature heat exchange channel 122 is in communication with the first straight-through channel 135 in the low-temperature heat exchange zone C, which is in communication with the inlet of the expansion valve assembly. The three zones are integrated by the design of the internal channels of the high-temperature heat exchange zone A, the medium-temperature heat exchange zone B and the low-temperature heat exchange zone C, without the need for external pipelines for connection, thereby reducing the refrigerant filling amount and solving the problem of complex installation structure and pipeline structure caused by the need for three independent heat exchangers.

[0045] As a specific working principle in the embodiment:

[0046] The high-temperature refrigerant path (high-pressure side): The refrigerant is discharged from the compressor in a high-temperature and high-pressure gaseous state, enters the high-temperature heat exchange zone A, that is, enters the high-temperature refrigerant inlet channel 116, and then flows along the second heat exchange flow channel to the high-temperature refrigerant outlet channel 113. At the same time, the low-temperature cooling liquid enters the high-temperature heat exchange zone A from the low-temperature cooling water inlet channel 115, flows along the first heat exchange flow channel to the high-temperature cooling water outlet channel 112, and in this process, the high-temperature and high-pressure gaseous refrigerant is gradually condensed into a high-temperature and high-pressure liquid state through heat dissipation (water cooling).

[0047] The medium-temperature refrigerant path (high-pressure side, before expansion valve throttling): The high-temperature and high-pressure liquid refrigerant from the high-temperature heat exchange zone A enters one of the first medium-temperature heat exchange channels 122 and flows along the first heat exchange flow channel to the first medium-temperature heat exchange channel 122. The low-temperature refrigerant from the low-temperature heat exchange zone C flows between the second heat exchange flow channels between the two second medium-temperature heat exchange channels 123. Therefore, the high-temperature and high-pressure liquid refrigerant exchanges heat with the low-temperature refrigerant from the medium-temperature heat exchange zone B and the low-temperature heat exchange zone C before reaching the expansion valve, so as to further cool the low-temperature refrigerant and increase the supercooling degree. At the same time, the low-temperature refrigerant from the low-temperature heat exchange zone C further increases the temperature after heat exchange with the high-temperature and high-pressure liquid refrigerant from the medium-temperature heat exchange zone B and the high-temperature heat exchange zone A, so as to improve the superheating degree before entering the compressor, and the medium-temperature heat exchange zone B greatly improves the system efficiency.

[0048] The medium-temperature liquid refrigerant further cooled by the medium-temperature heat exchange zone B directly enters the first straight-through channel 135, which is not in communication with the first heat exchange flow channel and the second heat exchange flow channel of the low-temperature heat exchange zone C. The function of the first straight-through channel 135 is the same as that of the flow-through hole. The medium-temperature liquid refrigerant directly enters the expansion valve assembly. The medium-temperature liquid refrigerant is throttled by the electronic expansion valve, the pressure drops suddenly, part of the liquid is flashed into gas, forming a low-temperature and low-pressure two-phase mixed state, and then enters the first transition channel 133 of the low-temperature heat exchange zone C from the outlet of the expansion valve assembly.

[0049] Low-temperature refrigerant path (low-pressure side evaporation heat absorption): The refrigerant throttled by the electronic expansion valve enters the low-temperature heat exchange area C and flows from the first transition channel 133 to the second transition channel 134 along the second heat exchange flow channel, while the external high-temperature battery coolant or engine coolant enters the cooling water inlet channel 131 and flows into the cooling water outlet channel 132 along the first heat exchange flow channel. In this process, the low-temperature low-pressure refrigerant absorbs the heat of the external high-temperature battery coolant or engine coolant and completely evaporates into low-temperature low-pressure gaseous refrigerant. The low-temperature low-pressure gaseous refrigerant flows out from the second transition channel 134 into the medium-temperature heat exchange area B and exchanges heat with the high-temperature refrigerant from the high-temperature heat exchange area A, and continues to be superheated. The gaseous refrigerant flowing out from the medium-temperature heat exchange area B enters the low-temperature refrigerant outlet channel 114 and directly passes through the high-temperature heat exchange area A (without heat exchange) to return to the compressor, completing the cycle.

[0050] In this embodiment, a first partition 119 is arranged between the high-temperature heat exchange area A and the medium-temperature heat exchange area B, and a second partition 110 is arranged between the medium-temperature heat exchange area B and the low-temperature heat exchange area C. By arranging the first partition 119 and the second partition 110, the three heat exchange areas can be separated, and the corresponding channels that need to be isolated can also be isolated. For example, the first partition 119 isolates the high-temperature refrigerant inlet channel 116 and the first medium-temperature heat exchange channel 122, and the second partition 110 isolates the first medium-temperature heat exchange channel 122, the second medium-temperature heat exchange channel 123, and the cooling water inlet channel 131.

[0051] In this embodiment, fins 111 are installed in the first heat exchange flow channel and the second heat exchange flow channel, which can greatly increase the contact area between the fluid and the plate, making the heat transfer more efficient. The fins can increase the rigidity and strength of the plate heat exchanger plate, allowing it to withstand higher pressure and stress. The shape of the fins 111 has many forms, common ones are straight fins, corrugated fins, serrated fins, etc. Straight fin structure is simple, easy to manufacture; corrugated fins increase fluid disturbance through special corrugated shape, improve heat exchange efficiency; serrated fins are provided with serrated structure at the edge of the fin, further enhancing the degree of fluid turbulence, which can be selected according to needs.

[0052] In this embodiment, the expansion valve assembly includes a pressure block 17 installed on the top plate 19 and an expansion valve 6 installed at one end of the pressure block 17. The first straight-through channel 135 and the first transition channel 133 are respectively connected to the inner sides of the two ends of the pressure block 17. The expansion valve is integrated into the heat exchanger through the pressure block, and the pressure block also acts as a valve seat to limit the inlet and outlet, facilitating the docking with the first straight-through channel and the first transition channel. At the same time, the connection of one end of the pressure block 17 with the integrated valve plate 1 can improve the installation and fixing strength of the integrated heat exchange module 2.

[0053] In this embodiment, asFigures 1-2 As shown in the figure, the cooling water outlet channel 132 is connected with the integrated valve plate 1 through the first connecting elbow 9, and the low-temperature cooling water inlet channel 115 is connected with the integrated valve plate 1 through the second connecting elbow 10. The first connecting elbow 9 and the second connecting elbow 10 can realize firm and reliable connection between the integrated heat exchange module 2 and the integrated valve plate 1, and the sealing property is better than that of the conventional pipeline.

[0054] In this embodiment, as shown in the figure, Figures 1-2 As shown in the figure, the side of the high-temperature heat exchange area A is provided with a bottom plate 117, the outer side of the bottom plate 117 is connected with a mounting plate 31, and the edge of the mounting plate 31 is connected with the compressor 4 through a plurality of connecting columns 12. The connecting column 12 can be an integrated structure with the compressor 4 or a split structure. The compressor 4 does not need to be provided with other mounting brackets, and the connecting structure is simple.

[0055] In this embodiment, as shown in the figure, Figures 1-2 As shown in the figure, the compressor 4 is provided with a first communication seat 14 connected with the high-temperature refrigerant inlet channel 116 and a second communication seat 11 connected with the low-temperature refrigerant outlet channel 114. The first communication seat 14 and the second communication seat 11 are an integrated structure with the compressor 4, which can improve the connection strength between the compressor 4 and the integrated heat exchange module 2 and reduce the risk of leakage.

[0056] As shown in the figure, Figures 9-10 As shown in the figure, the first transition channel 133 and the second transition channel 134 are arranged side by side on one side of the low-temperature heat exchange area C, and the cooling water inlet channel 131 and the cooling water outlet channel 132 are arranged side by side on the other side of the low-temperature heat exchange area C. The plate pieces in the low-temperature heat exchange area C include first low-temperature heat exchange plate pieces 136 and second low-temperature heat exchange plate pieces 137 arranged in a staggered manner. The first low-temperature heat exchange plate pieces 136 are provided with first separation protrusions 361 at positions between the first transition channel 133 and the second transition channel 134. The second low-temperature heat exchange plate pieces 137 are provided with second separation protrusions 362 matched with the first separation protrusions 361 at positions between the cooling water inlet channel 131 and the cooling water outlet channel 132. The first separation protrusions 361 are embedded in the embedding grooves 363 in the middle of the second separation protrusions 362. The first separation protrusions 361 and the second separation protrusions 362 can form U-shaped and opposite flow channels in the first heat exchange flow channel and the second heat exchange flow channel of the low-temperature heat exchange area, respectively, which can improve the heat exchange efficiency between the cooling water and the low-temperature low-pressure refrigerant. At the same time, the first transition channel and the second transition channel can be arranged close to the expansion valve to facilitate the formation of a loop.

[0057] In the embodiment, the edges of the plate 16, the first partition 119 and the second partition 110 are provided with protruding mark parts 18, and the mark parts 18 on the high-temperature heat exchange area A, the medium-temperature heat exchange area B, the low-temperature heat exchange area C, the first partition 119 and the second partition 110 are not located at the same positions. The mark parts 18 located at different positions can quickly distinguish the high-temperature heat exchange area A, the medium-temperature heat exchange area B, the low-temperature heat exchange area C, the first partition 119 and the second partition 110, so that the installation error can be avoided during installation.

[0058] As shown in Figures 11-15 , the automobile thermal management system in the embodiment has five working modes, and the specific modes are as follows.

[0059] As shown in Figure 12 , the first working mode is that the passenger compartment and the battery are refrigerated, and the motor is cooled. At this time, the warm air core door of the automobile air conditioner is closed, and the cold air core door is opened. The cooling water flowing through the warm air water pump 8 passes through the high-temperature heat exchange area A and then enters the warm air core. Then the cooling water flows through the nine-way water valve 3 and enters the motor, taking away the heat of the motor, and then flows through the radiator and the nine-way water valve 3 and returns to the warm air water pump 8, so that the motor is cooled by the radiator. At the same time, the cooling water flowing through the cold air water pump 5 flows through the low-temperature heat exchange area C to be cooled, and then flows through the cold air core. The air conditioner blows cold air to the passenger compartment. Then the cooling water flows through the nine-way water valve 3 and the battery water pump 24, enters the battery, takes away the heat of the battery, and returns to the nine-way water valve 3 and the cold air water pump 5, so as to cool the battery.

[0060] The second working mode is that the battery is refrigerated, and the motor is cooled. At this time, the warm air core door and the cold air core door are closed, and the other working processes are the same as those of the first working mode, except that the air conditioner does not blow air.

[0061] As shown in Figure 13 , the third working mode is that the passenger compartment and the battery are heated, and the motor is heated. At this time, the warm air core door is opened, and the cold air core door is closed. The cooling water flowing through the warm air water pump 8 passes through the high-temperature heat exchange area A and then enters the warm air core. Then the cooling water flows through the nine-way water valve 3 and enters the battery water pump 24. Then the cooling water flows through the battery to preheat the battery, and then flows through the nine-way water valve 3 and returns to the warm air water pump 8. At the same time, the cooling water flowing through the cold air water pump 5 flows through the low-temperature heat exchange area C to be cooled, and then flows through the cold air core. However, the air conditioner does not blow cold air to the passenger compartment. Then the cooling water flows through the nine-way water valve 3 and the motor, without flowing through the radiator, and returns to the nine-way water valve 3 and the cold air water pump 5, so as to cool the motor.

[0062] As shown in Figure 14As shown, the fourth working mode: the passenger cabin is heated, the battery is cooled, and the motor is heated; at this time, the warm air core air door is opened, the cold air core air door is closed, the cooling water flowing through the warm air pump 8 passes through the high-temperature heat exchange area A and then enters the warm air core, the air conditioner blows hot air, then the cooling water flows through the nine-way water valve 3 and enters the cold air pump 5, then the cooling water flows through the low-temperature heat exchange area C to be cooled, the cooling water then flows through the cold air core and then passes through the nine-way water valve 3 to enter the battery water pump 24, and flows through the battery to cool the battery, then the cooling water flows through the nine-way water valve 3 to enter the motor, the cooling water flowing through the motor carries away the heat of the motor, and then flows back to the warm air pump 8 through the nine-way water valve 3.

[0063] As shown in FIG. 6, the fifth working mode: the passenger cabin is heated, the battery is cooled, and the motor is cooled; the difference between this working mode and the fourth working mode is that the cooling water flows through the radiator after flowing through the motor to cool the motor. Figure 15

[0064] Therefore, by the application in the embodiment, the refrigerant channel of the water-cooled condenser, the water-refrigerant heat exchange layer of the intermediate heat exchanger, and the water-water heat exchange layer of the Chiller are integrated in the same shell, 70% of the connection points are reduced; the volume of the automobile thermal management integrated module is reduced by more than 40%, and 90% of the external pipelines are cancelled; the integrated design optimizes the path through internal thermal coupling, and the weight of the independent components in the traditional scheme is about 5 kg, which can be reduced to 2-3 kg after integration.

[0065] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific attitude (as shown in the drawings), and if the specific attitude changes, the directional indications also change accordingly.

[0066] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0067] ​In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, can be internal communication of two elements or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0068] In addition, the technical solutions among various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the present application.

Claims

1. An automobile thermal management system using an integrated heat exchange module, comprising an integrated valve plate (1), one side of which is connected and communicated with a nine-way water valve (3), a cooling water pump (5) and a battery water pump (24), characterized in that, The other side of the integrated valve plate (1) is provided with an integrated heat exchange module (2) and a warm air water pump (8), one end of the integrated heat exchange module (2) is directly connected with a compressor (4), the integrated heat exchange module (2) comprises a high-temperature heat exchange area (A), a medium-temperature heat exchange area (B) and a low-temperature heat exchange area (C) which are sequentially stacked, one side of the low-temperature heat exchange area (C) is provided with a top plate (19), the top plate (19) is provided with an expansion valve assembly, the high-temperature heat exchange area (A), the medium-temperature heat exchange area (B) and the low-temperature heat exchange area (C) are all composed of stacked plates (16) and the adjacent plates (16) form alternating and independent first heat exchange flow channels and second heat exchange flow channels, the high-temperature heat exchange area (A) and the low-temperature heat exchange area (C) are communicated with the integrated valve plate (1), the compressor (4) and the expansion valve assembly together form a circulation flow path through the first heat exchange flow channels and the second heat exchange flow channels in the integrated heat exchange module (2), the refrigerant in the compressor (4) flows into the expansion valve assembly through the first heat exchange flow channels of the high-temperature heat exchange area (A) and the medium-temperature heat exchange area (B) in sequence, and then flows back to the compressor (4) through the second heat exchange flow channels of the medium-temperature heat exchange area (B) and the low-temperature heat exchange area (C) in sequence, the second heat exchange flow channels of the high-temperature heat exchange area (A) are communicated with the warm air water pump (8) and an external warm air core, the first heat exchange flow channels of the low-temperature heat exchange area (C) are communicated with the cold air water pump (5) and an external cold air core, one side of the integrated valve plate (1) is further provided with a first external connector (21) for connecting the warm air core and the nine-way water valve (3), a second external connector (23) for connecting the battery and the battery water pump (24), a third external connector (28) for connecting the battery and the nine-way water valve (3), a fourth external connector (27) and a fifth external connector (26) for connecting the radiator and the nine-way water valve (3), a sixth external connector (25) for connecting the motor and the nine-way water valve (3), and a seventh external connector (22) for connecting the cold air core and the nine-way water valve (3).

2. The automotive thermal management system employing integrated heat exchange module as claimed in claim 1 wherein: The second heat exchange flow channel in the high-temperature heat exchange area (A) is connected with the low-temperature cooling water inlet channel (115) and the high-temperature cooling water outlet channel (112), and the first heat exchange flow channel in the high-temperature heat exchange area (A) is connected with the high-temperature coolant inlet channel (116) and the high-temperature coolant outlet channel (113); the first heat exchange flow channel in the medium-temperature heat exchange area (B) is connected with the first medium-temperature heat exchange channel (122) located on both sides of the medium-temperature heat exchange area (B), and the second heat exchange flow channel in the medium-temperature heat exchange area (B) is connected with the second medium-temperature heat exchange channel (123) located on both sides of the medium-temperature heat exchange area (B) respectively; the first heat exchange flow channel in the low-temperature heat exchange area (C) is connected with the cooling water inlet channel (131) and the cooling water outlet channel (132), the second heat exchange flow channel in the low-temperature heat exchange area (C) is connected with the first transition channel (133) and the second transition channel (134), the first transition channel (133) is connected with the outlet of the expansion valve assembly, the second transition channel (134) is connected with one of the second medium-temperature heat exchange channels (123), and the other second medium-temperature heat exchange channel (123) is connected with the low-temperature coolant outlet channel (114) in the high-temperature heat exchange area (A); one of the first medium-temperature heat exchange channels (122) is connected with the high-temperature coolant outlet channel (113), and the other first medium-temperature heat exchange channel (122) is connected with the first straight-through channel (135) in the low-temperature heat exchange area (C), and the first straight-through channel (135) is connected with the inlet of the expansion valve assembly.

3. The automotive thermal management system employing integrated heat exchange module as claimed in claim 2 wherein: The first partition plate (119) is arranged between the high-temperature heat exchange area (A) and the medium-temperature heat exchange area (B), and the second partition plate (110) is arranged between the medium-temperature heat exchange area (B) and the low-temperature heat exchange area (C).

4. The automotive thermal management system employing integrated heat exchange module of claim 2, wherein: The first heat exchange flow channel and the second heat exchange flow channel are both provided with fins (111).

5. The automotive thermal management system employing integrated heat exchange module as claimed in claim 2 wherein: The expansion valve assembly comprises a pressing block (17) mounted on the top plate (19) and an expansion valve (6) mounted at one end of the pressing block (17), and the first straight-through channel (135) and the first transition channel (133) are connected with the inner sides of the two ends of the pressing block (17) respectively.

6. The automotive thermal management system employing integrated heat exchange modules as claimed in any one of claims 2 to 5, wherein: The cooling water outlet channel (132) is connected with the integrated valve plate (1) through the first connecting elbow (9), and the low-temperature cooling water inlet channel (115) is connected with the integrated valve plate (1) through the second connecting elbow (10).

7. The automotive thermal management system employing integrated heat exchange modules as claimed in any one of claims 2 to 5, wherein: The side of the high-temperature heat exchange area (A) is provided with a bottom plate (117), the outer side of the bottom plate (117) is connected with a mounting plate (31), and the edge of the mounting plate (31) is connected with the compressor (4) through a plurality of connecting columns (12).

8. The automotive thermal management system employing integrated heat exchange module as claimed in claim 7 wherein: The compressor (4) is provided with a first communication seat (14) connected with the high-temperature coolant inlet channel (116) and a second communication seat (11) connected with the low-temperature coolant outlet channel (114).

9. The automotive thermal management system employing integrated heat exchange module as claimed in claim 2 wherein: The first transition passage (133) and the second transition passage (134) are arranged side by side on one side of the low-temperature heat exchange zone (C), and the cooling water inlet passage (131) and the cooling water outlet passage (132) are arranged side by side on the other side of the low-temperature heat exchange zone (C), the plate pieces in the low-temperature heat exchange zone (C) include first low-temperature heat exchange plate pieces (136) and second low-temperature heat exchange plate pieces (137) arranged in a staggered manner, wherein the first low-temperature heat exchange plate pieces (136) are provided with first partition protrusions (361) at positions between the first transition passage (133) and the second transition passage (134), and the second low-temperature heat exchange plate pieces (137) are provided with second partition protrusions (362) at positions between the cooling water inlet passage (131) and the cooling water outlet passage (132), the first partition protrusions (361) are embedded into the embedded grooves (363) in the middle of the second partition protrusions (362).

10. The integrated heat exchanger module of an automotive thermal management system of claim 3, wherein: The plate pieces (16), the first partition plate (119) and the second partition plate (110) are all provided with protruding mark parts (18) on the edges, and the positions of the mark parts (18) on the high-temperature heat exchange zone (A), the medium-temperature heat exchange zone (B), the low-temperature heat exchange zone (C), the first partition plate (119) and the second partition plate (110) are all different.

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