Thermal management system and method for automobile integrated processing and automobile

Abstract

The invention provides a thermal management system and method for automobile integrated processing and an automobile, and the system comprises a refrigeration circulation loop which is sequentially provided with a compressor and a refrigerator; a first heat exchanger is arranged on the first heat exchange circulation loop, and the first heat exchange circulation loop passes through the refrigerator and exchanges heat with the refrigeration circulation loop at the position of the refrigerator; wherein the refrigeration circulation loop is arranged in a front cabin of the automobile, the first heat exchange circulation loop is arranged in a passenger compartment of the automobile, and the technical scheme of the invention at least has the following beneficial effects: the refrigeration circulation loop is arranged in the front cabin, and then the first heat exchange circulation loop is arranged to exchange heat with the refrigeration circulation loop; the first heat exchange circulation loop is arranged in the passenger compartment, the passenger compartment is cooled through the first heat exchange circulation loop, the overall structure of the refrigeration circulation loop is shortened, a refrigerant does not need to flow to the passenger compartment and only circulates in the front compartment, and leakage points and system arrangement requirements are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of automobile thermal management, and in particular to a thermal management system, method and automobile for automobile integrated processing. Background Art

[0002] Since the power structure of electric vehicles is different from that of traditional fuel vehicles, the thermal management system of electric vehicles is also significantly different from that of traditional fuel vehicles. In high temperature environments, electric vehicles need to generate sufficient cooling capacity to meet the cooling needs of the vehicle interior.

[0003] The current automotive temperature control unit cools down the car through the refrigerant system. However, due to the special nature of the refrigerant, when the refrigerant is transported to various parts of the car body, the pressure balance of the air conditioning system, the refrigerant flow distribution, the refrigeration performance efficiency, etc. will be restricted by the unreasonable distribution of multiple circuits, making it difficult to maintain good system efficiency under complex and changing operating conditions, resulting in the actual performance of the system failing to meet the design goals. At the same time, due to the large number of cooling system circuits and the large distribution area of ​​various components, there are many refrigerant connection points, the pressure-resistant pipeline design is complex, and the risk of leakage increases. Summary of the invention

[0004] In view of the shortcomings of the prior art mentioned above, the object of the present invention is to provide a thermal management system, method and automobile for automobile integrated processing, so as to solve the problems in the prior art that there are many cooling system loops, the various components are distributed over a large area, resulting in many refrigerant connection points, complex pressure-resistant pipeline design and increased leakage risk.

[0005] To achieve the above objectives and other related objectives, the present invention provides a thermal management system for automotive integrated processing, comprising:

[0006] A refrigeration cycle loop, wherein a compressor and a refrigerator are sequentially arranged on the refrigeration cycle loop;

[0007] a first heat exchange circulation loop, wherein a first heat exchanger is disposed on the first heat exchange circulation loop, the first heat exchange circulation loop passes through the refrigerator and exchanges heat with the refrigeration circulation loop at the refrigerator;

[0008] The refrigeration cycle is arranged in the front engine compartment of the vehicle, and the first heat exchange cycle is arranged in the passenger compartment of the vehicle.

[0009] Optionally, the first heat exchange circulation loop includes a first branch and a plurality of circulating refrigeration branches, the first branch exchanges heat with the circulating refrigeration branch loop through the refrigerator, and the plurality of circulating refrigeration branches are all connected to the first branch;

[0010] Wherein, a plurality of the circulating refrigeration branches are arranged in the passenger compartment.

[0011] Optionally, the thermal management system further includes:

[0012] Condenser, the compressor, the condenser and the refrigerator are sequentially arranged on the refrigeration cycle;

[0013] a second heat exchange circulation loop, wherein a second heat exchanger is disposed on the second heat exchange circulation loop, the second heat exchange circulation loop passes through the condenser, and exchanges heat with the refrigeration circulation loop at the condenser;

[0014] The second heat exchange circulation loop is arranged in the passenger compartment of the automobile.

[0015] Optionally, the second heat exchange circulation loop includes a second branch and a plurality of circulating heating branches, the second branch exchanges heat with the circulating refrigeration branch loop through the condenser, and the plurality of circulating heating branches are all connected to the second branch;

[0016] Wherein, a plurality of the circulating refrigeration branches are arranged in the passenger compartment.

[0017] Optionally, the first heat exchange circulation loop also includes a third branch, which is connected to the first branch, and the second heat exchange circulation loop also includes a fourth branch, which is connected to the second branch, and the third branch and the fourth branch both pass through the battery heat exchanger for heat exchange.

[0018] Optionally, the second heat exchange circulation loop further includes a fifth branch, the fifth branch passes through an external radiator, and the external radiator is arranged downstream of the second heat exchanger.

[0019] Optionally, the refrigeration cycle includes a sixth branch and a seventh branch connected in parallel, and the sixth branch and the seventh branch are both located downstream of the compressor in the medium flow direction of the refrigeration cycle. An air-cooled radiator is provided on the sixth branch, and the condenser is provided on the seventh branch.

[0020] The present application also provides a thermal management method for automotive integrated processing, including the above-mentioned thermal management system:

[0021] When the car needs to be cooled, the refrigeration cycle loop compresses the refrigerant through the compressor to refrigerate, and the refrigerant circulates in the refrigeration cycle loop;

[0022] The refrigeration cycle loop and the first heat exchange cycle loop exchange heat through the refrigerator;

[0023] The first heat exchange circulation loop cools the passenger compartment.

[0024] Optionally, when the interior of the vehicle needs to be heated, the condenser of the refrigeration cycle releases heat;

[0025] Controlling the refrigeration cycle loop and the second heat exchange cycle loop to exchange heat through the condenser;

[0026] The second heat exchange cycle heats the passenger compartment.

[0027] The present application also provides an automobile, comprising the above-mentioned thermal management system.

[0028] As described above, the beneficial effects brought by the technical solution of the present invention include at least: the refrigeration cycle loop is arranged in the front engine compartment, and the first heat exchange cycle loop is arranged to exchange heat with the refrigeration cycle loop, and the first heat exchange cycle loop is arranged in the passenger compartment, and the passenger compartment is cooled by the first heat exchange cycle loop, thereby shortening the overall structure of the refrigeration cycle loop, and the refrigerant does not need to flow to the passenger compartment, but only circulates in the front engine compartment, thereby reducing leakage points and system layout requirements, and at the same time, because the structure of the cold cycle loop is simplified, the first heat exchange cycle loop can use a transport material with weaker vibration to transport the coolant, thereby reducing the vibration generated during cooling;

[0029] Moreover, by providing a refrigerator and a first heat exchanger to replace the evaporator in the prior art, the problem of frosting on the evaporator surface can be avoided, the evaporation temperature and evaporation pressure range can be expanded to a lower level, and the capacity range of the refrigeration system can be expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Shown is a schematic diagram of the structure of a thermal management system according to an exemplary embodiment of the present invention;

[0031] Figure 2 Shown is a schematic structural diagram of a thermal management system including a second heat exchange circulation loop according to an exemplary embodiment of the present invention.

[0032] Part Number Description:

[0033] 1. Refrigeration cycle; 11. Compressor; 12. Refrigerator; 13. Gas-liquid separator; 14. Liquid storage tank; 15. Condenser; 16. Sixth branch; 17. Seventh branch; 18. Proportional distribution valve; 19. Air-cooled radiator; 2. First heat exchange cycle; 21. First heat exchanger; 22. First branch; 23. Third branch; 24. Cold water tank; 3. Second heat exchange cycle; 31. Second heat exchanger; 32. Second branch; 33. Fourth branch; 34. Fifth branch; 35. External radiator; 36. Hot water tank; 4. Battery heat exchanger; 5. Electric water pump. DETAILED DESCRIPTION

[0034] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0035] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0036] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present disclosure. However, it is obvious to those skilled in the art that the embodiments of the present disclosure can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present disclosure difficult to understand.

[0037] See also Figure 1 The present invention provides a thermal management system for automobile integrated processing, comprising: a refrigeration cycle loop 1, on which a compressor 11 and a refrigerator 12 are sequentially arranged; a first heat exchange cycle loop 2 is provided with a first heat exchanger 21, the first heat exchange cycle loop 2 passes through the refrigerator 12 and exchanges heat with the refrigeration cycle loop 1 at the refrigerator 12; wherein the refrigeration cycle loop 1 is arranged in the front engine compartment of the automobile, and the first heat exchange cycle loop 2 is arranged in the passenger compartment of the automobile.

[0038] In one embodiment of the present application, specifically, the system includes a refrigeration cycle loop 1 and a first heat exchange cycle loop 2, the refrigeration cycle loop 1 is arranged in the front cabin, the refrigerant circulates in the refrigeration cycle loop 1, the refrigeration cycle loop 1 includes a gas-liquid separator 13, a compressor 11, a liquid storage tank 14 and a refrigerator 12, the gas-liquid separator 13, the compressor 11, the liquid storage tank 14 and the refrigerator 12 are connected in sequence to form a closed loop, the refrigerant flows from the gas-liquid separator 13, the compressor 11, the liquid storage tank 14 and the refrigerator 12 in sequence and finally returns to the gas-liquid separator 13, the first heat exchange cycle loop 2 is a refrigeration loop, the first heat exchange cycle loop 2 passes through the refrigerator 12 and the refrigeration cycle loop 1 Heat exchange (the first heat exchange circulation loop 2 achieves cooling and lowering of temperature through the refrigerator 12), a first heat exchanger 21 (cold core of the air-conditioning box) is arranged on the first heat exchange circulation loop 2 to achieve cooling inside the passenger compartment, and coolant (cold water is selected in this embodiment) flows in the first heat exchange circulation loop 2, and the first heat exchange circulation loop 2 is arranged in the vehicle body and the passenger compartment. Cold water replaces the refrigerant to flow in the vehicle body and the passenger compartment. The refrigerant does not need to flow to the passenger compartment, but only circulates in the front engine compartment. The whole vehicle can delete the high-pressure component cooler and connecting pipelines in the vehicle, reduce leakage points and system layout requirements, reduce the number of thermal expansion valves, electronic expansion valves and stop valves in the whole vehicle, and simplify the design structure of the refrigeration circulation loop 1.

[0039] Furthermore, the first heat exchange circulation loop 2 does not need to transport refrigerant, and uses materials with weaker vibration, such as TPEE (thermoplastic polyester elastomer) modified materials, rubber materials, etc., which can greatly reduce the vibration generated during cooling and improve the refrigerant flow sound and vibration volume in the car.

[0040] In one embodiment of the present application, specifically, by replacing the existing evaporator structure with a combined structure of the refrigerator 12 and the first heat exchanger 21, the problem of frosting on the surface of the evaporator structure is avoided, the evaporation temperature and evaporation pressure range can be expanded to a lower level, and the capacity range of the refrigeration system can be expanded.

[0041] The first heat exchange circulation loop 2 includes a first branch 22 and a plurality of circulating refrigeration branches. The first branch 22 exchanges heat with the circulating refrigeration branch loop through the refrigerator 12. The plurality of circulating refrigeration branches are all connected to the first branch 22.

[0042] Among them, the first branch 22 is located in the front engine compartment to exchange heat with the refrigeration cycle 1, the first branch 22 exchanges heat with the refrigerator 12, and multiple circulating refrigeration branches are arranged in the passenger compartment to cool the passenger compartment. One or more of the multiple circulating refrigeration branches pass through the first heat exchanger 21 to output refrigeration. A cold water tank 24 is also arranged between the output end of the first branch 22 and the input ends of the multiple circulating refrigeration branches. The cold water tank 24 is used to store the coolant after the first branch 22 exchanges heat with the refrigerator 12. The cold water tank 24 is provided with multiple outlets respectively connected to multiple circulating refrigeration branches (or the cold water tank 24 is not provided, and a multi-way joint is provided, which can also be achieved, and there is no restriction here).

[0043] In one embodiment of the present application, specifically, the first heat exchange circulation loop 2 includes a first branch 22 and multiple circulating refrigeration branches. The first branch 22 and the refrigeration circulation loop 1 perform heat exchange to achieve a refrigeration effect. Both ends of the multiple refrigeration branches are connected to both ends of the first branch 22. The multiple refrigeration branches are arranged in parallel at various positions of the vehicle body and the passenger compartment for cooling. Each circulating refrigeration branch is provided with an electric water pump 5 for allowing cold water to enter the corresponding refrigeration branch to cool the vehicle body.

[0044] The first branch 22 is provided with a first heat exchanger 21, and the first heat exchanger 21 cools the passenger compartment.

[0045] See also Figure 2 , the thermal management system further comprises:

[0046] The condenser 15, the compressor 11, the condenser 15 and the refrigerator 12 are sequentially arranged on the refrigeration cycle 1;

[0047] A second heat exchange circulation loop 3, wherein a second heat exchanger 31 (heat core of the air conditioner) is disposed on the second heat exchange circulation loop 3, and the second heat exchange circulation loop 3 passes through the condenser 15 and exchanges heat with the refrigeration circulation loop 1 at the condenser 15;

[0048] The second heat exchange circulation loop 3 is arranged in the passenger compartment of the vehicle.

[0049] In one embodiment of the present application, specifically, the refrigeration cycle loop 1 also includes a condenser 15, which is arranged between the compressor 11 and the liquid storage tank 14, and also includes a second heat exchange cycle loop 3, which is a heating circuit for heating the vehicle body and the passenger compartment. The second heat exchange cycle loop 3 exchanges heat with the refrigeration cycle loop 1 through the condenser 15, thereby achieving heating of water, and the heated hot water heats the vehicle body and the passenger compartment.

[0050] Connecting the condenser 15 to the second heat exchange circulation loop 3 for heating can provide a heat source supplement for the system in winter, and through the compression cycle of the compressor 11, a COP (Coefficient Of Performance is an important indicator for measuring the energy efficiency of the system)>1 is obtained, thereby achieving the effect of reducing energy consumption.

[0051] The second heat exchange circulation loop 3 includes a second branch 32 and a plurality of circulating heating branches. The second branch 32 exchanges heat with the circulating refrigeration branch loop through the condenser 15. The plurality of circulating heating branches are all connected to the second branch 32.

[0052] Among them, the second branch 32 is located in the refrigeration circulation loop 1 in the front engine compartment for heat exchange, the second branch 32 exchanges heat with the condenser 15, and multiple circulating refrigeration branches are arranged in the passenger compartment to heat the passenger compartment. One or more of the multiple circulating heating branches output heat through the second heat exchanger 31, and a hot water tank 36 is arranged between the output end of the second branch 32 and the input end of the multiple circulating heating branches. The hot water tank 36 is used to store hot water exchanged between the second branch 32 and the condenser 15. The hot water tank 36 is provided with multiple outlets respectively connected to multiple circulating heating branches (or the hot water tank 36 is not provided, and a multi-way joint is provided, which can also be realized, and there is no restriction here).

[0053] In one embodiment of the present application, specifically, the second heat exchange circulation loop 3 includes a second branch 32 and a plurality of circulating heating branches, both ends of each circulating heating branch are connected to both ends of the second branch 32, the second branch 32 and the condenser 15 perform heat exchange, and the hot water heated by the second branch 32 flows into the passenger compartment through the plurality of circulating heating branches to heat the passenger compartment. Among them, an electric water pump 5 is provided on each circulating heating branch.

[0054] The second branch 32 includes a high-pressure water heating PTC (Positive Temperature Coefficient, referring to semiconductor materials or components with a large positive temperature coefficient). According to the flow direction of hot water in the second branch 32, the hot water tank 36 is located downstream of the high-pressure water heating PTC. After the hot water in the second branch 32 is heat exchanged with the condenser 15, it enters the high-pressure water heating PTC for reheating, and finally enters the circulating heating branch. The second heat exchanger 31 realizes the output of hot air to heat the passenger compartment.

[0055] The first heat exchange circulation loop 2 also includes a third branch 23, which is connected to the first branch 22. The second heat exchange circulation loop 3 also includes a fourth branch 33, which is connected to the second branch 32. The third branch 23 and the fourth branch 33 both pass through the battery heat exchanger 4 for heat exchange.

[0056] In one embodiment of the present application, specifically, the third branch 23 and the fourth branch 33 are connected to the battery heat exchanger 4. When the battery heat exchanger 4 needs to be cooled, the cold water in the third branch 23 cools the battery heat exchanger 4. When the battery heat exchanger 4 needs to be heated, the hot water in the fourth branch 33 heats the battery heat exchanger 4.

[0057] There are two unconnected channels in the battery heat exchanger 4 , the third branch 23 is connected to the first channel of the battery heat exchanger 4 for heat exchange, and the fourth branch 33 is connected to the second channel of the battery heat exchanger 4 for heat exchange.

[0058] In one embodiment of the present application, specifically, the cooling of the battery heat exchanger 4 and the cooling of the passenger compartment are both achieved through the first heat exchange circulation loop 2. The requirements for the evaporation pressure of the battery heat exchanger 4 and the passenger compartment are consistent, and the problem of multi-circuit hydraulic imbalance caused by the difference in evaporation pressure between the battery heat exchanger 4 and the passenger compartment will not occur, thereby ensuring the cooling performance of the passenger compartment.

[0059] The second heat exchange circulation loop 3 further includes a fifth branch 34 , which passes through an external radiator 35 . The external radiator 35 is disposed downstream of the second heat exchanger 31 .

[0060] In one embodiment of the present application, an external radiator 35 (ie, a water tank) is also provided.

[0061] The refrigeration cycle 1 includes a sixth branch 16 and a seventh branch 17 connected in parallel. The sixth branch 16 and the seventh branch 17 are both located downstream of the compressor 11 in the medium flow direction of the refrigeration cycle 1. An air-cooled radiator 19 is arranged on the sixth branch 16, and the condenser 15 is arranged on the seventh branch 17.

[0062] In one embodiment of the present application, specifically, the refrigeration cycle 1 includes a sixth branch 16 and a seventh branch 17 connected in parallel, the sixth branch 16 and the seventh branch 17 are connected to the main circuit of the refrigeration cycle 1 through a proportional distribution valve 18, and the sixth branch 16 and the seventh branch 17 are both connected to a liquid storage tank 14. When the refrigeration cycle 1 is cooling, the proportional distribution valve 18 allows all the refrigerant to pass from the sixth branch 16 into the liquid storage tank 14. When the refrigeration cycle 1 is heating, the proportional distribution valve 18 allows the refrigerant to pass from the seventh branch 17 into the liquid storage tank 14.

[0063] The present application also provides a thermal management method for automotive integrated processing, including the above-mentioned thermal management system, the thermal management method comprising:

[0064] When the car needs to be cooled, the refrigeration cycle 1 compresses the refrigerant through the compressor 11 to refrigerate, and the refrigerant circulates in the refrigeration cycle 1;

[0065] The refrigeration cycle 1 and the first heat exchange cycle 2 exchange heat via the refrigerator 12;

[0066] The first heat exchange circulation loop 2 cools the passenger compartment.

[0067] When the interior of the vehicle needs to be heated, the condenser 15 of the refrigeration cycle 1 releases heat;

[0068] Controlling the refrigeration cycle 1 and the second heat exchange cycle 3 to exchange heat through the condenser 15;

[0069] The second heat exchange circulation loop 3 heats the passenger compartment.

[0070] The present application also provides an automobile, comprising the above-mentioned thermal management system.

[0071] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A thermal management system for automotive integrated processing, characterized in that: include: A refrigeration cycle loop, wherein a compressor and a refrigerator are sequentially arranged on the refrigeration cycle loop; a first heat exchange circulation loop, wherein a first heat exchanger is disposed on the first heat exchange circulation loop, the first heat exchange circulation loop passes through the refrigerator and exchanges heat with the refrigeration circulation loop at the refrigerator; The refrigeration cycle is arranged in the front engine compartment of the vehicle, and the first heat exchange cycle is arranged in the passenger compartment of the vehicle.

2. The thermal management system for automotive integrated processing according to claim 1, characterized in that: The first heat exchange circulation loop comprises a first branch and a plurality of circulating refrigeration branches, the first branch exchanges heat with the circulating refrigeration branch loop through the refrigerator, and the plurality of circulating refrigeration branches are all connected to the first branch; Wherein, a plurality of the circulating refrigeration branches are arranged in the passenger compartment.

3. The thermal management system for automotive integrated processing according to claim 2, characterized in that: The thermal management system further comprises: Condenser, the compressor, the condenser and the refrigerator are sequentially arranged on the refrigeration cycle; a second heat exchange circulation loop, wherein a second heat exchanger is disposed on the second heat exchange circulation loop, the second heat exchange circulation loop passes through the condenser, and exchanges heat with the refrigeration circulation loop at the condenser; The second heat exchange circulation loop is arranged in the passenger compartment of the automobile.

4. The thermal management system for automotive integrated processing according to claim 3, characterized in that: The second heat exchange circulation loop includes a second branch and a plurality of circulating heating branches, the second branch exchanges heat with the circulating refrigeration branch loop through the condenser, and the plurality of circulating heating branches are all connected to the second branch; Wherein, a plurality of the circulating refrigeration branches are arranged in the passenger compartment.

5. The thermal management system for automotive integrated processing according to claim 4, characterized in that: The first heat exchange circulation loop also includes a third branch, which is connected to the first branch. The second heat exchange circulation loop also includes a fourth branch, which is connected to the second branch. The third branch and the fourth branch both pass through the battery heat exchanger for heat exchange.

6. A thermal management system for automotive integrated processing according to any one of claims 4-5, characterized in that: The second heat exchange circulation loop further includes a fifth branch, and the fifth branch passes through an external radiator, and the external radiator is arranged downstream of the second heat exchanger.

7. A thermal management system for automotive integrated processing according to any one of claims 4-5, characterized in that: The refrigeration cycle includes a sixth branch and a seventh branch connected in parallel. The sixth branch and the seventh branch are both located downstream of the compressor in the medium flow direction of the refrigeration cycle. An air-cooled radiator is arranged on the sixth branch, and the condenser is arranged on the seventh branch.

8. A thermal management method for automotive integrated processing, characterized in that: A thermal management system comprising: When the car needs to be cooled, the refrigeration cycle loop compresses the refrigerant through the compressor to refrigerate, and the refrigerant circulates in the refrigeration cycle loop; The refrigeration cycle loop and the first heat exchange cycle loop exchange heat through the refrigerator; The first heat exchange circulation loop cools the passenger compartment.

9. The thermal management method for automotive integrated processing according to claim 8, characterized in that: When the interior of the car needs to be heated, the condenser of the refrigeration cycle releases heat; Controlling the refrigeration cycle loop and the second heat exchange cycle loop to exchange heat through the condenser; The second heat exchange circulation loop heats the passenger compartment.

10. An automobile, characterized in that: Comprising a thermal management system as claimed in any one of claims 1 to 7.

Images