A new energy vehicle thermal management integrated module based on a secondary circuit

Abstract

The application is suitable for the field of automobile thermal management technology, and provides a new energy automobile thermal management integrated module based on a secondary circuit, which comprises a compressor, a pipe integrated device attached to the outer surface of the compressor, the pipe integrated device is provided with a first flow channel opening, a second flow channel opening and a third flow channel opening; the exhaust port of the compressor is connected with the refrigerant inlet end of a first heat exchanger, the refrigerant outlet end of the first heat exchanger is connected with the first flow channel opening, the second flow channel opening is connected with an electronic expansion valve, and the third flow channel opening is connected with the refrigerant inlet end of a second heat exchanger. The application can reduce the system heat loss caused by the pipeline pressure drop, and reduce the space layout difficulty of the whole vehicle system; through the integration of each component, not only the process assembly link in the manufacturing process is reduced, the production efficiency is improved, but also the risk of refrigerant leakage is reduced to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of automotive thermal management technology and provides an integrated thermal management module for new energy vehicles based on a secondary loop. Background Technology

[0002] With the continuous advancement of new energy vehicle technology, the demands for thermal management functions have become increasingly complex and sophisticated. Simultaneously, the number of components and connectors in the vehicle's thermal management system has increased dramatically. This change has triggered numerous problems, including reduced system reliability and a significant increase in installation and maintenance costs. The dispersed arrangement of components increases system complexity and occupies considerable space, leading to reduced utilization of the vehicle's front compartment. The reliance on piping between components not only causes heat loss but also poses a risk of refrigerant leakage. Therefore, with the rapid development of new energy vehicles and the advancement of the thermal management industry, modular system structure has become an urgent requirement for the future development of thermal management systems. Summary of the Invention

[0003] The purpose of this invention is to provide a new energy vehicle thermal management integrated module based on a secondary loop, which integrates the refrigerant side and aims to solve the problems mentioned in the background art.

[0004] This invention is implemented as follows: a new energy vehicle thermal management integrated module based on a secondary loop includes a compressor and a pipe integration device attached to the outer surface of the compressor. The pipe integration device is provided with a first flow channel, a second flow channel, and a third flow channel. The exhaust port of the compressor is connected to the refrigerant inlet of a first heat exchanger, the refrigerant outlet of the first heat exchanger is connected to the first flow channel, the second flow channel is connected to an electronic expansion valve, the third flow channel is connected to the refrigerant inlet of a second heat exchanger, and the refrigerant outlet of the second heat exchanger is connected to the suction port of the compressor.

[0005] Furthermore, the compressor is enclosed in a housing, which is used to secure the compressor and the pipe integration device.

[0006] Furthermore, the pipe integration device is a flow channel plate, which is located between the outer surface of the compressor and the housing, and is embedded on the outer surface of the compressor.

[0007] Furthermore, the flow channel plate includes a U-shaped flow channel segment, a transition segment, and a direct flow channel segment connected in sequence. The first flow channel opening is located at the end of the U-shaped flow channel segment away from the transition segment, the second flow channel opening is located at the junction of the transition segment and the direct flow channel segment, and the third flow channel opening is located at the end of the direct flow channel segment away from the transition segment.

[0008] Furthermore, the first heat exchanger is a first plate heat exchanger, and the second heat exchanger is a second plate heat exchanger.

[0009] Furthermore, the new energy vehicle thermal management integrated module based on a secondary circuit also includes connectors, which are respectively a first bolt hole, a second bolt hole, and a third bolt hole, for fixing the compressor and the housing.

[0010] Furthermore, the electronic expansion valve is connected to a second heat exchanger, which is connected to the suction port of the compressor.

[0011] Furthermore, the first coolant inlet and the first coolant outlet of the first heat exchanger are connected to a first cooling water circuit, and the first cooling water circuit exchanges heat with the refrigerant pumped by the compressor in the first heat exchanger.

[0012] Furthermore, the second coolant inlet and the second coolant outlet of the second heat exchanger are connected to a second cooling water circuit, which exchanges heat with the refrigerant pumped by the compressor in the second heat exchanger.

[0013] The present invention provides a new energy vehicle thermal management integrated module based on a secondary loop, which has the following advantages compared with the prior art: the original pipeline is replaced with an integrated module, that is, a pipe integration device attached to the outer surface of the compressor, which highly integrates the air conditioning system, realizes the full integration design of the compressor and components, reduces the difficulty of the overall vehicle space layout, and greatly reduces the system energy loss caused by pipeline pressure drop; it reduces the process assembly links in the manufacturing process and improves production efficiency; and it also reduces the risk of refrigerant leakage to a certain extent. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a new energy vehicle thermal management integrated module based on a secondary loop, provided in an embodiment of the present invention.

[0015] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of a new energy vehicle thermal management integrated module based on a secondary loop provided in an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the flow channel plate structure of a new energy vehicle thermal management integrated module based on a secondary loop, provided in an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the flow channel plate planar structure of a new energy vehicle thermal management integrated module based on a secondary loop, provided in an embodiment of the present invention.

[0018] In the attached diagram: Electric compressor-1; First plate heat exchanger-2; Electronic expansion valve-3; Second plate heat exchanger-4; Flow channel plate-5; First flow channel inlet-6; Second flow channel inlet-7; Third flow channel inlet-8; Outer shell-9; First bolt hole-10; Second bolt hole-11; Third bolt hole-12; First coolant inlet-13; First coolant outlet-14; Second coolant inlet-15; Second coolant outlet-16. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] The terms "first," "second," etc., used in the embodiments of this invention are merely for distinguishing different parts and do not imply any difference in their importance.

[0021] In the accompanying figures, similar labels and letters are used to denote similar items. Therefore, if an item has been defined in one of the accompanying figures, it is not necessary to further define and explain that item in subsequent accompanying figures.

[0022] It should also be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0023] like Figures 1 to 4 As shown, in one embodiment, a new energy vehicle thermal management integrated module based on a secondary loop includes a compressor and a pipe integration device attached to the outer surface of the compressor. The pipe integration device is provided with a first flow channel 6, a second flow channel 7, and a third flow channel 8. The exhaust port of the compressor is connected to the refrigerant inlet of a first heat exchanger, the refrigerant outlet of the first heat exchanger is connected to the first flow channel 6, the second flow channel 7 is connected to an electronic expansion valve 3, the third flow channel 8 is connected to the refrigerant inlet of a second heat exchanger, and the refrigerant outlet of the second heat exchanger is connected to the suction port of the compressor.

[0024] This embodiment replaces the conventional method of connecting multiple pipelines with a pipe integration device. This integrated module method highly integrates the air conditioning system, realizes the full integration design of the compressor and components, reduces the difficulty of the overall vehicle space layout, greatly reduces the system energy loss caused by pipeline pressure drop, reduces the process assembly steps in the manufacturing process, improves production efficiency, and also reduces the risk of refrigerant leakage to a certain extent.

[0025] In one example of this embodiment, the pipe integration device is a flow channel plate 5, which has a first flow channel port 6, a second flow channel port 7, and a third flow channel port 8. The first flow channel port 6 is used to connect with the refrigerant outlet of the first heat exchanger; the second flow channel port 7 is used to connect with the electronic expansion valve 3; and the third flow channel port 8 is used to connect with the refrigerant inlet of the second heat exchanger.

[0026] In one example of this embodiment, the compressor is an electric compressor 1, which realizes the cycle of refrigerant compression, condensation (heat release), expansion, and evaporation (heat absorption).

[0027] Among them, the electric compressor 1 can be a piston compressor, screw compressor, centrifugal compressor, or linear compressor, etc.

[0028] In one example of this embodiment, the compressor is encapsulated with a housing 9, which is used to fix the compressor and the pipe integration device.

[0029] In this embodiment, the flow channel plate 5 is located between the surface of the electric compressor 1 and the outer casing 9, and is embedded on the outer surface of the electric compressor 1; the flow channel openings on the flow channel plate 5 are the first flow channel opening 6, the second flow channel opening 7, and the third flow channel opening 8.

[0030] As mentioned above, the outer casing 9 covers the outer surface of the electric compressor 1 and has the characteristics of corrosion resistance and high temperature resistance, which can effectively protect the electric compressor 1 and reduce the impact of the external environment.

[0031] In one example of this embodiment, the pipe integration device is a one-to-two pipe, wherein the first end has only one channel, which is set as the first flow channel 6, and the second end has two channels, namely the second flow channel 7 and the third flow channel 8.

[0032] In one example of this embodiment, the first heat exchanger is a first plate heat exchanger 2, and the second heat exchanger is a second plate heat exchanger 4.

[0033] In one example of this embodiment, the refrigerant inlet of the first plate heat exchanger 2 is connected to the exhaust port of the electric compressor 1, the refrigerant outlet of the first plate heat exchanger 2 is connected to the first flow channel port 6 of the flow channel plate 5, and the first coolant inlet 13 and the first coolant outlet of the first plate heat exchanger 2 are used to connect to the external cooling water circuit under different mode requirements.

[0034] The refrigerant inlet of the second plate heat exchanger 4 is connected to the third flow channel 8 of the flow channel plate 5, and the refrigerant outlet of the second plate heat exchanger 4 is connected to the suction port of the electric compressor 1. The second coolant inlet 15 and the second coolant outlet 16 of the second plate heat exchanger 4 are used to connect to the external cooling water circuit under different mode requirements.

[0035] The different modes of operation are required, such as defrosting, dehumidifying, heating, and cooling.

[0036] In one example of this embodiment, the outer casing 9 and the compressor are provided with connecting parts, such as bolt holes, which are a first bolt hole 10, a second bolt hole 11, and a third bolt hole 12 for fixing the compressor and the outer casing 9.

[0037] In one example of this embodiment, after the refrigerant outlet of the first plate heat exchanger 2 passes through the first flow channel port 6 of the flow channel plate 5, it can further dissipate heat to the refrigerant in the suction port of the electric compressor 1, increasing the subcooling and further improving the working efficiency of the air conditioning system.

[0038] In one example of this embodiment, such as Figure 3 , Figure 4 As shown, the flow channel plate includes a U-shaped flow channel section, a transition section, and a direct flow channel section connected in sequence. The first flow channel opening 6 is located at the end of the U-shaped flow channel section away from the transition section, the second flow channel opening 7 is located at the junction of the transition section and the direct flow channel section, and the third flow channel opening 8 is located at the end of the direct flow channel section away from the transition section.

[0039] The U-shaped flow channel section, transition section, and direct flow channel section are all attached to the outer surface of the electric compressor 1. The U-shaped flow channel section can conform to the outer surface of the electric compressor 1 to achieve position limitation and save space.

[0040] In one example of this embodiment, a connector is also included, which has a first bolt hole 10, a second bolt hole 11 and a third bolt hole 12, for fixing the compressor and the housing 9;

[0041] Connectors may also include clamps, limit rings, etc.

[0042] In one example of this embodiment, the electronic expansion valve 3 is connected to a second heat exchanger, which is connected to the suction port of the compressor.

[0043] The second heat exchanger can be a second plate heat exchanger, which is used to absorb heat and convert the low-temperature, liquid refrigerant into a gaseous, high-temperature refrigerant.

[0044] In one example of this embodiment, the first coolant inlet 13 and the first coolant outlet 14 of the first heat exchanger are connected to a first cooling water path, and the first cooling water path exchanges heat with the refrigerant pumped by the compressor in the first heat exchanger.

[0045] Furthermore, the second cooling liquid inlet 15 and the second cooling liquid outlet 16 of the second heat exchanger are connected to a second cooling water circuit, and the second cooling water circuit exchanges heat with the refrigerant pumped by the compressor in the second heat exchanger.

[0046] The first cooling water circuit and the second cooling water circuit can be a single, unified cooling water circuit, or they can be independent cooling water circuits.

[0047] The first and second cooling water circuits are mainly used to heat the heating system of new energy vehicles.

[0048] This invention provides a new energy vehicle thermal management integrated module based on a secondary loop. The integrated pipe device has high space utilization, can be closely attached to the compressor, and replaces conventional pipes for easy integration. It highly integrates the air conditioning system, realizes the full integration design of the compressor and components, reduces the difficulty of vehicle space layout, and greatly reduces system energy loss caused by pipe pressure drop. It also reduces the process assembly steps in the manufacturing process, improves production efficiency, and reduces the risk of refrigerant leakage to a certain extent.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A new energy vehicle thermal management integrated module based on a secondary loop, characterized in that, The system includes a compressor and a pipe assembly attached to the outer surface of the compressor. The pipe assembly has a first flow channel, a second flow channel, and a third flow channel. The compressor's exhaust port is connected to the refrigerant inlet of a first heat exchanger, the refrigerant outlet of the first heat exchanger is connected to the first flow channel, the second flow channel is connected to an electronic expansion valve, the third flow channel is connected to the refrigerant inlet of a second heat exchanger, and the refrigerant outlet of the second heat exchanger is connected to the compressor's suction port. The compressor is enclosed in a housing for securing the compressor and the pipe assembly. The device, wherein the pipe integration device is a flow channel plate, the flow channel plate is located between the outer surface of the compressor and the housing, the flow channel plate is embedded on the outer surface of the compressor, the flow channel plate includes a U-shaped flow channel section, a transition section and a direct flow channel section connected in sequence, wherein the first flow channel opening is located at the end of the U-shaped flow channel section away from the transition section, the second flow channel opening is located at the junction of the transition section and the direct flow channel section, and the third flow channel opening is located at the end of the direct flow channel section away from the transition section, the transition section is perpendicular to the plane where the U-shaped flow channel section is located, and the direct flow channel section is parallel to the plane where the U-shaped flow channel section is located.

2. The integrated module for thermal management of new energy vehicles based on a secondary loop according to claim 1, characterized in that, The first heat exchanger is a first plate heat exchanger, and the second heat exchanger is a second plate heat exchanger.

3. The integrated module for thermal management of new energy vehicles based on a secondary loop according to claim 1, characterized in that, The new energy vehicle thermal management integrated module based on a secondary circuit also includes connectors, which are respectively a first bolt hole, a second bolt hole and a third bolt hole, for fixing the compressor and the housing.

4. The integrated module for thermal management of new energy vehicles based on a secondary loop according to claim 1, characterized in that, The electronic expansion valve is connected to a second heat exchanger, which is connected to the suction port of the compressor.

5. The integrated module for thermal management of new energy vehicles based on a secondary loop according to claim 1, characterized in that, The first cooling liquid inlet and the first cooling liquid outlet of the first heat exchanger are connected to a first cooling water circuit, and the first cooling water circuit exchanges heat with the refrigerant pumped by the compressor in the first heat exchanger.

6. A new energy vehicle thermal management integrated module based on a secondary loop according to claim 1 or 5, characterized in that, The second heat exchanger has a second cooling water circuit connected to its second cooling liquid inlet and second cooling liquid outlet. The second cooling water circuit exchanges heat with the refrigerant pumped by the compressor in the second heat exchanger.

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