Integrated module and thermal management system

Abstract

The present invention belongs to the field of commercial vehicle thermal management technology and discloses an integrated module and thermal management system. The module includes a housing within which are mounted an electric drive circuit, a battery circuit, a heat pump circuit, and a battery cooling circuit. The electric drive circuit's piping is connected to circuit accessories, the battery circuit's piping is connected to a PTC heater, the heat pump circuit's piping is connected to a first compressor, and the battery cooling circuit's piping is connected to a second compressor. This solves the problem of the prior art of requiring long piping when connecting the lower piping to the vehicle's underbody components.

Description

Technical Field

[0001] The present invention relates to the technical field of commercial vehicle thermal management, and in particular to an integrated module and a thermal management system. Background Art

[0002] Large electric commercial vehicles are equipped with batteries that drive the vehicle. The batteries need to be preheated in low-temperature environments to maintain battery activity and thus extend battery life. At the same time, when the batteries are working at high temperatures, they need coolant to cool them. The cab in the commercial vehicle also needs to blow out hot or cool air according to the outside temperature.

[0003] Under existing technologies, the radiator needs to be connected to multiple parts, such as the compressor, heater, refrigerator, cooling system of the electric drive component, heat exchanger, water pump and other components to achieve heat or cold conduction. However, the above-mentioned components are distributed in various positions of the vehicle, resulting in long pipes connecting the connecting components and the radiator, which occupy space at the bottom of the vehicle. Long pipes also increase the risk of leakage. At the same time, the distribution of pipes at the bottom of the vehicle is relatively large and complex, which is not convenient for maintenance workers to carry out inspections. Summary of the Invention

[0004] The object of the present invention is to provide an integrated module and a thermal management system to solve the problem in the prior art that a long pipeline is required when connecting a lower pipeline to a bottom component of a vehicle.

[0005] To achieve this object, the present invention adopts the following technical solution: The present invention provides an integrated module, which includes a shell, in which an electric drive circuit, a battery circuit, a heat pump circuit and a battery cooling circuit are installed. The pipeline of the electric drive circuit is connected to circuit accessories, the pipeline of the battery circuit is connected to a PTC heater, the pipeline of the heat pump circuit is connected to a first compressor, and the pipeline of the battery cooling circuit is connected to a second compressor.

[0006] Preferably, an electric drive water inlet and an electric drive water outlet are provided on the side wall of the shell, and the electric drive circuit connects the electric drive water inlet and the electric drive water outlet. The electric drive circuit is equipped with a first water pump, circuit accessories, a second water pump, an electric drive axle, a reducer, a second three-way valve and a third three-way valve in sequence along the flow direction of the medium. The third three-way valve is connected to the electric drive water outlet, and the electric drive water inlet and the electric drive water outlet are connected to a radiator.

[0007] Preferably, the shell is rectangular, and a first mounting plate and a second mounting plate are formed on opposite sides of the shell, the first mounting plate faces the radiator, and the second mounting plate is away from the radiator, the electric drive water inlet is opened on the first mounting plate, and the electric drive water outlet is opened on the second mounting plate.

[0008] Preferably, a battery water inlet and a battery water outlet are provided at both ends of the battery loop, and the battery water inlet and the battery water outlet are provided on the second mounting plate.

[0009] Preferably, a battery, a third water pump, a PTC heater, a first four-way valve, a second four-way valve and a fourth three-way valve are sequentially installed in the battery circuit along the medium flow direction, and the fourth three-way valve is connected to the battery.

[0010] Preferably, the fourth three-way valve is externally connected to a refrigerator, and the refrigerator is connected to a branch opened on the third water pump.

[0011] Preferably, a first compressor is installed in the heat pump circuit, and a first compression outlet and a first compression inlet are connected to both sides of the first compressor, and the first compression inlet and the first compression outlet are opened on the first mounting plate.

[0012] Preferably, a second compressor is installed in the battery cooling circuit, and a second compression inlet and a second compression outlet are connected to both sides of the second compressor, and the second compression inlet and the second compression outlet are opened on the first mounting plate.

[0013] A thermal management system includes the integrated module described above. The management system also includes a radiator, an assembly frame and a battery. The radiator is installed on one side of the first mounting plate, and the assembly frame and the battery are installed on one side of the second mounting plate.

[0014] Beneficial effects: By integrating the circuit accessories, PTC heater, first compressor and second compressor into the housing, the electric drive circuit, battery circuit, heat pump circuit and battery cooling circuit are all installed in the housing, and the pipelines required for the connection of the above four groups of circuits are all arranged in the housing, so that the distribution of the pipelines on the bottom of the vehicle is more concentrated, the area of ​​the pipeline layout is reduced, and the volume of the pipeline layout at the bottom of the vehicle can be reduced. At the same time, since the circuit accessories, PTC heater and the first compressor and the second compressor are all integrated in the housing, it is also convenient for the staff to conduct subsequent inspection and maintenance, reducing the overall volume of the thermal management system and making the vehicle components more integrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a main diagram of the second mounting plate of the present invention;

[0016] Figure 2 This is a main diagram of the first mounting plate of the present invention;

[0017] Figure 3 It is the installation diagram of the thermal management system of the present invention.

[0018] In the figure: 1. Shell; 2. First mounting plate; 3. Second mounting plate; 4. First compressor; 5. Second compressor; 6. PTC heater; 7. Electric drive water inlet; 8. Electric drive water outlet; 9. First water pump; 10. Second water pump; 11. Third water pump; 12. First three-way valve; 13. Fourth three-way valve; 14. Radiator; 15. Battery water inlet; 16. Battery water outlet; 17. First four-way valve; 18. Second four-way valve; 19. First compression outlet; 20. First compression inlet; 21. Second compression outlet; 22. Second compression inlet; 23. Heat exchanger water inlet; 24. Heat exchanger water outlet; 25. Warm air inlet; 26. Warm air outlet; 27. Radiator water outlet; 28. Accessory water inlet; 29. ​​Electric drive degassing port; 30. Assembly frame; 31. Refrigerator. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0020] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0021] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0023] Under existing technology, since the compressor, refrigerator, heater heat exchanger and other components on the bottom of the vehicle are scattered and fixed in different positions on the bottom of the vehicle, the layout of the pipelines on the bottom of the vehicle is relatively complicated, which is inconvenient for maintenance personnel to carry out maintenance. It also causes the pipeline distribution area on the bottom of the vehicle to be larger, occupying a larger space in the vehicle, and reducing the integration of the vehicle.

[0024] In order to solve the above problems, Figures 1 to 3 As shown, the present invention provides an integrated module, which includes a shell 1, in which an electric drive circuit, a battery circuit, a heat pump circuit and a battery cooling circuit are installed. The pipeline of the electric drive circuit is connected to circuit accessories, the pipeline of the battery circuit is connected to a PTC heater 6, the pipeline of the heat pump circuit is connected to a first compressor 4, and the pipeline of the battery cooling circuit is connected to a second compressor 5.

[0025] The electric drive circuit, battery circuit, heat pump circuit, and battery cooling circuit are all installed in the housing 1. The circuit accessories, PTC heater 6, first compressor 4, and second compressor 5 are also all integrated in the housing 1, making the thermal management system more integrated and reducing the space occupied by the electric drive circuit, battery circuit, heat pump circuit, and battery cooling circuit. The four circuits are more centrally distributed, making it easier for maintenance personnel to perform subsequent repairs. The heat pump circuit and battery cooling circuit can work simultaneously to cool the battery. The heat pump circuit uses two sets of valve bodies connected in parallel within it to change the flow direction of the refrigerant when switching between heat pump and cooling modes. The refrigerator 31 and expansion valve are connected to the outlet of the outdoor heat exchanger. The two are also connected in parallel to the evaporator, allowing the compressor to achieve a one-to-two cooling effect, that is, cooling the battery and the cab at the same time. Finally, it returns from the evaporator or refrigerator 31 to the compressor inlet, completing the cycle of the heat pump system.

[0026] An electric drive water inlet 7 and an electric drive water outlet 8 are provided on the side wall of the shell 1 of the present invention. The electric drive circuit connects the electric drive water inlet 7 and the electric drive water outlet 8. The electric drive circuit is sequentially installed with a first water pump 9, circuit accessories, a second water pump 10, an electric drive bridge, a reducer, a second three-way valve and a third three-way valve along the flow direction of the medium. The third three-way valve is connected to the electric drive water outlet 8, and the electric drive water inlet 7 and the electric drive water outlet 8 are connected to the radiator 14.

[0027] By integrating the components in the electric drive circuit into the shell, the electric drive components are cooled while making the vehicle bottom space design more compact, thereby improving the integration of the integrated module and saving more space at the bottom of the vehicle. The second three-way valve can determine whether the coolant passes through the heat exchanger, the third three-way valve determines whether the cooling in the pipeline passes through the radiator 14, the first three-way valve 12 can determine whether the passenger compartment coolant circuit is connected in series with the battery cooling circuit, and the fourth three-way valve 13 can determine the flow direction of the coolant in the battery circuit. The above four groups of three-way valves can be flexibly opened and closed according to different working conditions, making the thermal management system more efficient.

[0028] The thermal management system further includes a radiator 14 , an integrated module, an assembly frame 30 and a battery. The radiator 14 is mounted on one side of the first mounting plate 2 , and the assembly frame 30 and the battery are mounted on one side of the second mounting plate 3 .

[0029] The shell 1 is rectangular, and a first mounting plate 2 and a second mounting plate 3 are formed on opposite sides of the shell 1. The first mounting plate 2 faces the radiator 14, so that the radiator 14 is directly connected to all openings on the first mounting plate 2, shortening the distance between the radiator 14 and the integrated module, making the distribution of the thermal management system more compact.

[0030] The second mounting plate 3 is away from the radiator 14, the electric drive water inlet 7 is opened on the first mounting plate 2, and the electric drive water outlet 8 is opened on the second mounting plate 3, which is directly connected to the corresponding interface on the radiator 14, thereby improving the integration, reducing the volume of the connection between the radiator 14 and the integrated module, and improving the integration of the thermal management system.

[0031] A battery water inlet 15 and a battery water outlet 16 are provided at both ends of the battery loop, and the battery water inlet 15 and the battery water outlet 16 are provided on the second mounting plate 3 .

[0032] The second mounting plate 3 integrates a battery water inlet 15 and a battery water outlet 16 , so that the position of the pipeline interface is more centralized, the integration of the pipeline is higher, and it is also convenient for later maintenance.

[0033] The battery, the third water pump 11, the PTC heater 6, the first four-way valve 17, the second four-way valve 18 and the fourth three-way valve 13 are sequentially installed in the battery circuit along the medium flow direction. The fourth three-way valve 13 is connected to the battery.

[0034] Since the electric drive circuit and the battery circuit are connected in series, the first four-way valve 17 and the second four-way valve 18 determine the flow direction of the coolant in the electric drive circuit and the battery circuit.

[0035] The fourth three-way valve 13 is externally connected to a refrigerator 31, which is connected to a branch on the third water pump 11 and is responsible for cooling when fast charging and high battery cooling demand occur. Sensors are arranged on the pipes of the battery inlet and outlet, respectively, and can monitor the temperature in real time.

[0036] The heat pump circuit houses a first compressor 4, flanked by a first compression outlet 19 and a first compression inlet 20. Both are located on the first mounting plate 2. A second compressor 5 is installed in the battery cooling circuit, flanked by a second compression inlet 22 and a second compression outlet 21. These inlet and outlet groups are all mounted on the first mounting plate 2, further enhancing the integration of the integrated module and enabling the piping of the first and second compressors 4 and 5 to be fully connected on the first mounting plate 2.

[0037] A refrigerator 31 is also integrated in the integrated module. The first mounting plate 2 is also provided with a heat exchanger water inlet 23, a heat exchanger water outlet 24, a warm air water inlet 25, a warm air water outlet 26, and a radiator water outlet 27. The second mounting plate 3 is also provided with an accessory water inlet 28 and an electric drive degassing port 29, which makes the first mounting plate 2 and the second mounting plate 3 on both sides of the integrated module more integrated and reduces the volume of the thermal management system.

[0038] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An integrated module, characterized in that: The invention comprises a housing (1), wherein an electric drive circuit, a battery circuit, a heat pump circuit and a battery cooling circuit are installed in the housing (1); a circuit accessory is connected to the pipeline of the electric drive circuit, a PTC heater (6) is connected to the pipeline of the battery circuit, a first compressor (4) is connected to the pipeline of the heat pump circuit, and a second compressor (5) is connected to the pipeline of the battery cooling circuit; An electric drive water inlet (7) and an electric drive water outlet (8) are provided on the side wall of the housing (1); the electric drive circuit connects the electric drive water inlet (7) and the electric drive water outlet (8); the electric drive circuit is sequentially installed with a first water pump (9), circuit accessories, a second water pump (10), an electric drive bridge, a speed reducer, a second three-way valve and a third three-way valve along the flow direction of the medium; the third three-way valve is connected to the electric drive water outlet (8); and the electric drive water inlet (7) and the electric drive water outlet (8) are connected to a radiator (14); The housing (1) is rectangular, and a first mounting plate (2) and a second mounting plate (3) are formed on opposite sides of the housing (1), the first mounting plate (2) faces the radiator (14), and the second mounting plate (3) is away from the radiator (14), the electric drive water inlet (7) is provided on the first mounting plate (2), and the electric drive water outlet (8) is provided on the second mounting plate (3); A first compressor (4) is installed in the heat pump circuit, and a first compression outlet (19) and a first compression inlet (20) are connected to both sides of the first compressor (4), and the first compression inlet (20) and the first compression outlet (19) are opened on the first mounting plate (2); A second compressor (5) is installed in the battery cooling circuit, and a second compression inlet (22) and a second compression outlet (21) are connected to both sides of the second compressor (5), and the second compression inlet (22) and the second compression outlet (21) are opened on the first mounting plate (2).

2. The integrated module according to claim 1, characterized in that A battery water inlet (15) and a battery water outlet (16) are provided at both ends of the battery loop, and the battery water inlet (15) and the battery water outlet (16) are provided on the second mounting plate (3).

3. The integrated module according to claim 2, characterized in that: A battery, a third water pump (11), a PTC heater (6), a first four-way valve (17), a second four-way valve (18), and a fourth three-way valve (13) are sequentially installed in the battery circuit along the medium flow direction, and the fourth three-way valve (13) is connected to the battery.

4. The integrated module according to claim 3, characterized in that: The fourth three-way valve (13) is externally connected to a refrigerator (31), and the refrigerator (31) is communicated with a branch opened on the third water pump (11).

5. A thermal management system, characterized in that: The integrated module according to claim 4 is included, and the management system further includes a radiator (14), an assembly frame (30) and a battery, wherein the radiator (14) is mounted on one side of the first mounting plate (2), and the assembly frame (30) and the battery are mounted on one side of the second mounting plate (3).

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