Integrated device, thermal management system and method of controlling the same

Abstract

The application discloses an integrated device, a thermal management system and a control method thereof, and relates to the technical field of integrated devices. The integrated device has a bypass channel, a valve cavity and a valve port. The integrated device comprises a heat exchange assembly, a connecting assembly and a valve assembly. The heat exchange assembly has a first fluid inlet, a communication port and a first heat exchange channel. The first fluid inlet is in communication with the communication port through a part of the first heat exchange channel. The valve assembly comprises a valve core assembly, at least part of which is located in the valve cavity. The valve port is in communication with the bypass channel, and the communication port is in communication with the valve cavity. The valve core assembly can move towards or away from the valve port to adjust the communication state of the communication port and the valve port. In this way, the integrated device can bypass a part of the first heat exchange channel through the bypass channel, thereby facilitating the reduction of pressure loss of oil medium when passing through the integrated device.

Description

Technical Field

[0001] This invention relates to the field of heat exchange technology, specifically to an integrated device, a thermal management system, and a control method thereof. Background Technology

[0002] The thermal management system includes heat exchangers, through which the working medium flows. During operation, the thermal management system may encounter various environments. For example, when the working medium is at a low temperature, such as when the working medium is oil, the viscosity of the oil is high, resulting in greater flow resistance through the internal flow path of the heat exchanger and potentially causing significant pressure loss. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated device, a thermal management system and its control method, which facilitates the partial bypassing of the first heat exchange channel through a bypass channel, reduces the pressure loss of the working fluid of the integrated device in a low-temperature environment, and the integrated device has a high degree of integration, which facilitates the reduction of the space occupied by the integrated device and the thermal management system.

[0004] On one hand, embodiments of the present invention provide an integrated device having a bypass channel, a valve cavity, and a valve port. The integrated device includes a heat exchange component, a connecting component, and a valve core assembly. The heat exchange component has a first fluid inlet, a connecting port, and a first heat exchange channel. The first fluid inlet communicates with the connecting port through a portion of the first heat exchange channel. The connecting component is sealed to the heat exchange component and covers the connecting port. The connecting component forms at least a portion of the wall of the bypass channel and at least a portion of the wall of the valve cavity. At least a portion of the valve core assembly is located in the valve cavity. The valve port communicates with the bypass channel, the connecting port communicates with the valve cavity, and the valve core assembly is movable toward or away from the valve port to adjust the communication state between the connecting port and the valve port.

[0005] According to the integrated device provided in the embodiments of the present invention, the connecting component forms at least a portion of the wall of the bypass channel and the valve cavity, at least a portion of the valve core assembly is located in the valve cavity, the connecting component is sealed to the heat exchange component, and the valve cavity is connected to the communication port, which facilitates the improvement of the integration degree of the integrated device and helps to reduce the space occupied by the integrated device; furthermore, by setting the valve port to be connected to the bypass channel and the communication port to be connected to the valve cavity, the valve core assembly can move towards or away from the valve port to adjust the communication state of the communication port and the valve port. When the integrated device is applied to the thermal management system and the fluid temperature in the thermal management system is low, by controlling the valve core assembly, the communication port and the valve port can be connected. At this time, the bypass channel can bypass part of the first heat exchange channel, which helps to reduce the pressure loss of the oil medium when passing through the integrated device.

[0006] On the other hand, embodiments of the present invention also provide a thermal management system, including an oil pump and the aforementioned integrated device, wherein the oil pump has a first pump port, and the first pump port is connected to the first fluid inlet.

[0007] According to the thermal management system provided in the embodiments of the present invention, by setting the valve port to be connected to the bypass channel and the connection port to be connected to the valve cavity, the valve core assembly can move towards or away from the valve port to adjust the connection state of the connection port and the valve port. When the fluid temperature in the thermal management system is low, by controlling the valve core assembly, the bypass channel can bypass the first fluid inlet, so that the oil medium entering from the inlet channel enters the bypass channel, reducing or avoiding the oil medium entering the heat exchange component through the first fluid inlet, which helps to reduce the pressure loss of the oil medium when passing through the integrated device, thereby reducing the power consumption of the oil pump.

[0008] In another aspect, embodiments of the present invention also provide a control method for a thermal management system, used to control the aforementioned thermal management system, the thermal management system including a first branch, the first branch being located upstream of the oil pump, and the channel in the first branch being connected to the channel in the oil pump, the control method including: comparing the fluid temperature in the first branch with a temperature threshold to obtain a comparison result; and controlling the valve core assembly to move towards or away from the valve port according to the comparison result, so as to adjust the connection state between the connecting port and the valve port.

[0009] According to the control method of the thermal management system provided in the embodiment of the present invention, the fluid temperature in the first branch is compared with a temperature threshold to obtain a comparison result, and the valve core assembly is controlled to move closer to or further away from the valve port according to the comparison result, so as to adjust the connection state of the connection port and the valve port. This allows the integrated device to control the valve core assembly according to the fluid temperature in the first branch, which facilitates the better operation of the thermal management system in various different environments and reduces the loss of oil medium. Attached Figure Description

[0010] Figure 1 This is a schematic block diagram of a thermal management system provided in one embodiment of the present invention;

[0011] Figure 2 This is an exploded view of the integrated device provided in one embodiment of the present invention;

[0012] Figure 3 This is a three-dimensional structural schematic diagram of an integrated device provided in one embodiment of the present invention;

[0013] Figure 4 yes Figure 3 The diagram shows a cross-sectional view of an integrated device at one of its locations.

[0014] Figure 5 yes Figure 2 The diagram shows a cross-sectional view of a valve assembly.

[0015] Figure 6 yes Figure 3 The diagram shows a partial cross-sectional view of an integrated device at another location;

[0016] Figure 7 yes Figure 2 The diagram shows a three-dimensional structure of a connector.

[0017] Figure 8 yes Figure 2 The diagram shows a cross-sectional view of a valve body.

[0018] Figure 9 This is an exploded view of the integrated device provided in another embodiment of the present invention;

[0019] Figure 10 yes Figure 9 The diagram shows a three-dimensional structure of an integrated device.

[0020] Figure 11 yes Figure 10 The diagram shows a cross-sectional view of an integrated device at one of its locations.

[0021] Figure 12 yes Figure 10 The diagram shows a three-dimensional structure of a valve body;

[0022] Figure 13 yes Figure 10 The diagram shows a three-dimensional structure of a snap-fit ​​connector;

[0023] Figure 14 yes Figure 10 The diagram shows a cross-sectional view of an integrated device at another location.

[0024] Figure 15 This is a flowchart illustrating a control method for a thermal management system provided in one embodiment of the present invention.

[0025] Figure label:

[0026] 1. Integrated device; 101. Bypass channel; 102. Valve chamber; P1. First fluid inlet; P2. First fluid outlet; P3. Connecting port; P4. Valve port; 10. Heat exchange assembly; 11. First side plate; 12. Second side plate; 13. Heat exchange core; 131. Heat exchange plate; 141. First heat exchange channel; 142. Second heat exchange channel; TD1. First corner hole channel; TD2. Second corner hole channel; TD3. Inter-plate channel; 15. Connecting part; 20. Connecting assembly; 23. Connector; 231. First mounting part; 232. Second mounting part; 24. Valve body; 241. Connecting channel; 242. 1. Engaging part; 244. Limiting hole; 245. Limiting groove; 30. Valve assembly; 31. Valve core assembly; 311. Valve stem; 32. Drive assembly; 321. Drive housing; 322. Coil assembly; 323. Moving iron core; 324. Stationary iron core; 325. Elastic element; 33. Snap-fit ​​part; 331. Limiting part; 332. Main body; 34. First seal; 35. Isolation cover; 36. Balance hole; 37. Balance chamber; 38. Second seal; 39. Third seal; 2. Thermal management system; 40. First branch; 50. Oil pump; 51. First pump port; 52. Second pump port; 61. Electric drive device. Detailed Implementation

[0027] The features and exemplary embodiments of various aspects of the present invention will now be described. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. In this document, relational terms such as "first" and "second" are used merely to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0028] like Figures 1 to 4 As shown, thermal management systems are typically installed in vehicles and other transportation vehicles. These systems include heat exchangers, through which two heat exchange fluids can flow. These two fluids flow within their respective channels and exchange heat. Optionally, the two heat exchange fluids can be cooling water and oil, respectively. The heat exchanger in the thermal management system allows for heat exchange with structures such as the electric drive unit in the vehicle. However, when the vehicle is first started and / or operating in cold environments, the fluid temperature is low. For example, the viscosity of the medium oil is high at low temperatures. At this time, the flow resistance of the oil passing through the heat exchanger is very high, resulting in significant pressure loss. Furthermore, when the oil passes through the heat exchanger, it exchanges heat with the cooling water, which is not conducive to the rapid rise of the fluid temperature to the optimal operating temperature of the electric drive unit.

[0029] To improve the above problems, such as Figure 1As shown, this embodiment of the invention provides a thermal management system 2, which includes a first branch 40, an oil pump 50, an integrated device 1, and an electric drive device 61. The oil pump 50 has a first pump port 51 and a second pump port 52. The first pump port 51 can be the outlet of the oil pump 50, and the second pump port 52 can be the inlet of the oil pump 50. The outlet of the first branch 40 can be connected to the inlet of the oil pump 50, and the outlet of the oil pump 50 can be connected to the inlet channel of the integrated device 1. The outlet channel of the integrated device 1 can be connected to the electric drive device 61. The first branch 40 may include a device such as an oil tank, and the electric drive device 61 may include an electric drive device such as an engine. For example, the connection between the outlet of the first branch 40 and the inlet of the oil pump 50 can mean that the openings of the two openings are directly sealed and connected, or that the two openings are connected through other connecting blocks or pipes. The opening includes the opening itself and the wall that defines the opening.

[0030] The integrated device 1 in this embodiment of the invention has a bypass channel 101. The integrated device 1 includes a heat exchange assembly 10 and a valve assembly 30. The heat exchange assembly 10 has a first heat exchange channel 141 and a second heat exchange channel 142. For example, a first fluid, such as medium oil, can flow through the first heat exchange channel 141, and a second fluid, such as refrigerant, can flow through the second heat exchange channel 142. The valve assembly 30 includes a valve core assembly 31. By controlling the operation of the valve core assembly 31, at least a portion of the first heat exchange channel 141 can be bypassed. At this time, the first heat exchange channel 141 and the bypass channel 101 are arranged in parallel. With the above arrangement, when the vehicle is just started and / or when the vehicle is running in a cold environment, by controlling the operation of the valve core assembly 31 to bypass at least a portion of the first heat exchange channel 141, at least a portion of the medium oil can pass through the bypass channel 101, reducing or avoiding the medium oil from undergoing heat exchange through the heat exchange assembly 10, and reducing the oil consumption of the medium oil, which is beneficial to reducing the driving force of the oil pump 50.

[0031] In some embodiments, the thermal management system 2 further includes a refrigerant branch, the channel of which is connected to the second heat exchange channel 142 in the heat exchange assembly 10. The fluid in the second heat exchange channel 142 does not interact with the fluid in the first heat exchange channel 141, but the fluid in the second heat exchange channel 142 and the fluid in the first heat exchange channel 141 can exchange heat. With the above configuration, the fluid in the second heat exchange channel 142 can cool the fluid in the first heat exchange channel 141, thereby allowing the medium oil or other fluid flowing out of the first heat exchange channel 141 to dissipate heat from the electric drive device 61.

[0032] To reduce the space occupied by the thermal management system 2 and to facilitate the bypassing of at least part of the first heat exchange channel 141, please refer to... Figures 2 to 8This invention also provides an integrated device 1, which has a bypass channel 101, a valve chamber 102, and a valve port P4. The integrated device 1 includes a heat exchange assembly 10, a connecting assembly 20, and a valve assembly 30. The connecting assembly 20 is sealed to the heat exchange assembly 10 to prevent fluid leakage between the connecting assembly 20 and the heat exchange assembly 10. The connecting assembly 20 forms at least a portion of the wall of the bypass channel 101 and at least a portion of the wall of the valve chamber 102. The valve assembly 30 includes a valve core assembly 31, at least a portion of which is located in the valve chamber 102. The valve core assembly 31 is movable toward or away from the valve port P4.

[0033] The heat exchange assembly 10 has a first fluid inlet P1, a connecting port P3, and a first heat exchange channel 141. The first fluid inlet P1 is connected to the connecting port P3 through a portion of the first heat exchange channel 141, for example... Figure 4 As shown, the first fluid inlet P1 is located upstream of the connecting port P3. The first heat exchange channel 141 includes a first corner hole channel TD1. The first fluid inlet P1 is connected to the connecting port P3 through the first corner hole channel TD1. At least a portion of the connecting assembly 20 and at least a portion of the valve assembly 30 are located on the side of the heat exchange assembly 10 away from the first fluid inlet P1. The connecting assembly 20 covers the connecting port P3. The valve port P4 is connected to the bypass channel 101, and the connecting port P3 is connected to the valve chamber 102. The valve core assembly 31 can move towards or away from the valve port P4 to adjust the connection state between the connecting port P3 and the valve port P4. With the above configuration, when the integrated device 1 is applied to the thermal management system 2 and the fluid temperature in the thermal management system 2 is low, by controlling the relative movement of the valve core assembly 31 and the valve port P4, the connecting port and the valve port can be connected. At this time, the bypass channel can bypass part of the first heat exchange channel, which helps to reduce the pressure loss of the oil medium when passing through the integrated device.

[0034] To facilitate the flow of the medium oil within the integrated device 1, in some embodiments, the heat exchange component 10 further includes a first fluid outlet P2. The first fluid inlet P1 and the first fluid outlet P1 are located on the outer surface of the integrated device 1. Fluid can enter the integrated device 1 through the first fluid inlet P1 and exit the integrated device from the first fluid outlet P2. The first heat exchange channel 141 also includes a second corner hole channel TD2 and an inter-plate channel TD3. The inter-plate channel TD3 connects the first corner hole channel TD1 and the second corner hole channel TD2. The first fluid inlet P1 is connected to the connecting port P3 through the first corner hole channel TD1. The first fluid outlet P2 is located downstream of the connecting port P3 and is connected to the second corner hole channel TD2.

[0035] Based on this, the integrated device 1 has a first operating mode, as shown in Figure 3. In the first operating mode, there is a gap between the valve core assembly 31 and the wall of the limiting valve port P4. The connecting port P3 is connected to the valve port P4. The first fluid inlet P1 is connected to the first fluid outlet P2 through the first corner hole channel TD1, the second corner hole channel TD2, and the inter-plate channel TD3. The first fluid inlet P1 is also connected to the first fluid outlet P2 through the first corner hole channel TD1, the connecting port P3, the valve cavity 102, the valve port P4, the bypass channel 101, and the second corner hole channel TD2. At this time, the bypass channel 101 and the inter-plate channel TD3 are arranged in parallel. With the above arrangement, when the medium oil flows into the heat exchange assembly 10, due to the large flow resistance of the inter-plate channel TD3 and the small flow resistance of the valve cavity 102 and the bypass channel 101, most of the medium oil will flow into the valve cavity 102 and flow from the bypass channel 101 to the second corner hole channel TD2, and then flow out from the first fluid inlet P1. Since the bypass channel 101 and the inter-board channel TD3 are arranged in parallel, the flow resistance of the integrated device 1 is reduced in the first working mode of the integrated device 1, which helps to reduce the drive power consumption of the oil pump 50.

[0036] As shown in Figure 3, in a specific implementation, the valve core assembly 31 moves away from the valve port P4, creating a gap between the valve core assembly 31 and the wall of the valve port P4. At this time, the valve port P4 is connected to the connecting port P3, allowing the first corner hole channel TD1 to connect through the connecting port P3, the valve port P4, and the bypass channel 101. Further, the valve core assembly 31 includes a valve stem 311, a valve core portion, and an elastic portion. The valve core portion and the valve stem 311 are an integral structure, and the elastic portion is positioned within the valve core portion or both are an integral structure. The elastic portion can be compressed and deformed, allowing it to abut against the wall of the valve port P4.

[0037] Combination Figures 4 to 8In some embodiments, the heat exchange assembly 10 includes a first side plate 11, a second side plate 12, and a heat exchange core 13. The first side plate 11 and the second side plate 12 are arranged along the height direction of the heat exchange assembly 10. At least a portion of the heat exchange core 13 is located between the first side plate 11 and the second side plate 12. The heat exchange core 13 includes heat exchange plates 131 stacked along the height direction of the heat exchange assembly 10, and the stacking direction of the heat exchange plates 131 is parallel to or coincides with the height direction of the heat exchange assembly 10. A first fluid inlet P1 and a first fluid outlet P2 are located on the first side plate 11. The connecting assembly 20 includes a sealed valve body 24 and a connector 23. The valve body 24 defines at least a portion of the wall of the valve cavity 102. The valve body 24 may also include a connecting channel 241 that connects the valve port P4 to the bypass channel 101. The connecting channel 241 may be an L-shaped channel. The connector 23 and the second side plate 12 are sealed together to define at least a portion of the bypass channel 101. Optionally, the valve body 24 may be made of plastic, and the connector 23 may be made of metal. The valve body 24 and the connector 23 may be connected and sealed by brazing. In some other embodiments, the valve body 24 and the connector 23 may be made of the same material, and they may be a single piece.

[0038] Combination Figure 1 In some embodiments, the heat exchange assembly 10 further includes a second heat exchange channel 142, which is fluidly isolated from the first heat exchange channel 141, meaning that the second heat exchange channel 142 and the first heat exchange channel 141 are not in communication. The heat exchange assembly 10 also includes a connecting pipe 15, which is sealed to the second side plate 12 or the connector 23. The connecting pipe 15 has a channel communicating with the second heat exchange channel 142, allowing coolant to flow into or out of the integrated device 1. Along the height direction of the heat exchange assembly 10, at least a portion of the connecting assembly 20 and at least a portion of the connecting pipe 15 are located at the same height. By placing at least a portion of the connecting assembly 20 and the connecting pipe 15 on the same side of the height direction of the heat exchange assembly 10, the space occupied by the integrated heat exchange device 1 is reduced.

[0039] Further integration Figures 4 to 7 As shown, in some embodiments, the connector 23 is covered on the outer periphery of the second side plate 12, a portion of the connector 23 is at the same height as the second side plate 12, and a portion of the connector 23 is sealed with the heat exchange plate 131 to define a portion of the wall of the first corner hole channel TD1 and / or a portion of the wall of the second corner hole channel TD2.

[0040] In specific implementation, along the height direction perpendicular to the heat exchange assembly 10, the second side plate 12 is located at the middle position of the heat exchange assembly 10. The heat exchange plate adjacent to the second side plate 12 is defined as the first heat exchange plate. The second side plate 12 and the first heat exchange plate can be sealed by welding. The connector 23 is covered on the outer periphery of the second side plate 12, and part of the connector 23 can be sealed to the first heat exchange plate by welding. Through the above arrangement, it is easy to reduce the thickness of the integrated device 1. Optionally, as shown in 3, along the circumferential direction of the first corner hole channel TD1, the connector 23 is sealed to the first heat exchange plate around the entire circumference. Along the circumferential direction of the second corner hole channel TD2, part of the connector 23 is sealed to the first heat exchange plate, and another part of the second side plate 12 is sealed to the first heat exchange plate. At this time, the connector 23 may include a first mounting part 231 and a second mounting part 232, wherein one connecting part 15 is limited and sealed to the first mounting part 231, and the other connecting part 15 is limited and sealed to the second mounting part 232.

[0041] Alternatively, in other embodiments, the second side plate 12 is stacked on the side of the first heat exchange plate away from the first side plate 11. Along the circumferential direction of the first corner hole channel TD1 and the circumferential direction of the second corner hole channel TD2, the second side plate 12 and the first heat exchange plate are sealed together. Along the height direction of the heat exchange assembly 10, the connector 23 is located on the side of the second side plate 12 away from the first side plate 11.

[0042] To enable the valve core assembly 31 to move, the valve assembly 30 also includes a drive assembly 32. The drive assembly 32 includes a drive element, which can be a motor; or a combination of a motor and a reduction mechanism; or a combination of a motor and a lead screw; or an electromagnetic drive element.

[0043] To achieve the limit setting of the drive component 32, in some embodiments, combined with Figures 2 to 8 As shown, the valve assembly 30 also includes a snap-fit ​​member 33, and the drive assembly 32 includes a drive housing 321. One of the drive housing 321 and the valve body 24 is embedded in the other, and the drive housing 321 is sealed to the valve body 24. The snap-fit ​​member 33 passes through the valve body 24 and the drive housing 321, and the valve body 24 and the drive housing 321 are connected by the snap-fit ​​member 33. To limit the position of the snap-fit ​​member 33, a locking part 242 is also provided in the valve body 24. When the snap-fit ​​member 33 passes through the valve body 24 and the drive housing 321, the snap-fit ​​member 33 is locked by the locking part 242 to prevent the snap-fit ​​member 33 from coming out.

[0044] In a specific implementation, the drive assembly 32 also includes a coil assembly 322, a stationary iron core 324, an elastic element 325, and a moving iron core 323. The coil assembly 322 is located within the space defined by the drive housing 321, or the coil assembly 322 and the drive housing 321 are integrally injection molded structures. At least a portion of the moving iron core 323 is located on the inner circumference of the coil assembly 322. The valve core assembly 31 includes a valve stem. The moving iron core 323 and the valve stem are integral structures or limited settings. The moving iron core 323 can move towards or away from the stationary iron core 324. The elastic element 325 can be a spring. The elastic element 325 is located between the moving iron core 323 and the stationary iron core 324, enabling the coil assembly 322 to drive the moving iron core 323 to reset when the power is off.

[0045] To prevent fluid from entering the area where the coil assembly 322 is located and causing damage to the coil assembly 322, in some embodiments, the drive assembly 32 further includes an isolation cover 35, which is sealed to the drive housing 321, and at least a portion of the isolation cover 35 is located between the moving iron core 323 and the coil assembly 322.

[0046] Furthermore, the valve assembly 30 may also include a first seal 34, which is located between the moving iron core 323 and the drive housing 321, or between the valve core assembly 31 and the drive housing 321, to improve the sealing performance of the valve assembly 30.

[0047] To reduce the valve opening pressure of the valve assembly 30, the valve assembly 30 also has a balance hole 36 and a balance chamber 37. The balance chamber 37 is located on the side of the first seal 34 away from the valve chamber 102, as shown in Figure 4. Part of the balance chamber 37 is located between the isolation cover 35 and the moving iron core 323. The balance hole 36 connects the bypass channel 101 with the balance chamber 37.

[0048] To further prevent fluid leakage, in some embodiments, the valve assembly 30 further includes a second seal 38 and a third seal 39, the second seal being sandwiched between the drive housing 321 and the valve body 24, and the third seal being sandwiched between the isolation cover 35 and the drive housing 321.

[0049] In some embodiments, the bypass channel 101 and the first heat exchange channel 141 are both connected to the first fluid outlet P2. In order to realize the heat exchange function of the integrated device 1, the integrated device 1 also has a second working mode. In the second working mode, the valve core assembly 31 abuts against the wall of the limiting valve port P4, and the first fluid inlet P1 is connected to the first fluid outlet P2 through the first heat exchange channel 141.

[0050] Furthermore, to reduce the number of parts and save costs, the structure of the integrated device 1 is simplified, combined with... Figures 9 to 14 As shown, in some embodiments, the present invention also provides an integrated device 1, the structure of which is similar to... Figures 2 to 8The heat exchange integrated structures shown are similar, with the main difference being the different structures of the connector 23 and the valve body 24.

[0051] Specifically, in combination Figures 9 to 14 In this embodiment of the invention, the connecting assembly 20 includes a sealing connector 23 and a valve body 24. The connector 23 is a transfer pipe structure, for example, the connector 23 can be a bent pipe structure. The connector 23 defines the wall of the bypass channel 101. The valve port P4 can be located on the connector 23 or the valve body 24. The connector 23 and the valve body 24 are welded after being filled with solder. The valve body 24 and the heat exchange assembly 10 can be riveted and then welded.

[0052] Specifically, in Figures 9 to 14 In the integrated device 1 shown, the second side plate 12 has a communication port P3 and an adapter port P8. The communication port P3 is connected to the first fluid inlet P1 through the first corner hole channel TD1, and the adapter port P8 is connected to the first fluid outlet P2 through the second corner hole channel TD2. One end of the bypass channel 101 can be connected to the valve port P4, and the other end is connected to the adapter port P8.

[0053] Furthermore, combined Figures 9 to 14 The integrated device 1 also includes a drive component 32, which is connected to... Figures 2 to 8 The structures shown are similar, and similar structures will not be described again. The difference between the two integrated devices 1 is that the drive assembly 32 includes a drive housing 321. In order to limit the movement of the drive assembly 32 and the valve body 24, in some embodiments, a portion of the drive housing 321 is fitted inside the valve body 24. The integrated device 1 includes a snap-fit ​​member 33, which limits the connection between the drive housing 321 and the valve body 24.

[0054] In a specific implementation, the valve body 24 includes a limiting groove 245 and at least two limiting holes 244. The limiting groove 245 extends from the outer peripheral surface of the valve body 24 into the interior of the valve body 24. The limiting holes 244 penetrate the inner wall of the valve body 24 from the bottom wall of the limiting groove 245 and penetrate the peripheral wall of the valve body 24. The limiting holes 244 are arranged along the outer peripheral wall of the valve body 24. Correspondingly, the snap-fit ​​member 33 includes a limiting part 331 and a main body part 332. The inner wall surface of the limiting part 331 is closer to the center of the snap-fit ​​member 33 than the inner wall surface of the main body part 332. The main body part 332 is confined in the limiting groove 245, and the limiting part 331 passes through the limiting holes 244 and abuts against the outer wall of the drive housing 321.

[0055] In this embodiment of the invention, a bypass channel is provided on the flow path side of the first fluid, and / or, in some other embodiments, a bypass channel with a similar structure may also be provided on the flow path side of the second fluid.

[0056] In summary, according to the integrated device 1 provided by the embodiments of the present invention, the connecting component 20 forms at least a portion of the wall of the bypass channel 101 and the valve cavity 102, the valve component 30 includes a valve core component 31 located in the valve cavity 102, the connecting component 20 is sealed to the heat exchange component 10, and the valve cavity 102 is connected to the communication port P3, which facilitates improving the integration of the integrated device 1, reducing the piping arrangement between the valve component 30 and the heat exchange component 10, and helps to reduce the space occupied by the integrated device 1; furthermore, by setting the valve port P4 to be connected to the bypass channel 101 and the communication port P3 to be connected to the valve cavity, the valve core component 31 can move towards or away from the valve port P4 to adjust the connection state of the communication port P3 and the valve port P4. When the integrated device 1 is applied to the thermal management system 2 and the fluid temperature in the thermal management system 2 is low, by controlling the valve core component 31, the communication port P3 and the valve port P4 can be connected. At this time, the bypass channel 101 can bypass part of the first heat exchange channel 141, which facilitates reducing the pressure loss of the oil medium when passing through the integrated device 1.

[0057] Furthermore, embodiments of the present invention also provide a control method for a thermal management system, used to control the thermal management system 2 of any of the above embodiments. The thermal management system 2 includes a first branch 40, which is located upstream of the oil pump 50, and the channel in the first branch 40 is connected to the channel in the oil pump 50. The control method for the thermal management system includes:

[0058] S110. Compare the fluid temperature in the first branch 40 with the temperature threshold to obtain the comparison result;

[0059] S120. Based on the comparison results, control the valve core assembly 31 to move closer to or further away from the valve port P4 to adjust the connection state between the connecting port P3 and the valve port P4.

[0060] In some embodiments, before step S110, a step of detecting the fluid temperature in the first branch 40 may be included. Optionally, the temperature threshold can be 40°C. When the fluid temperature in the first branch 40 is less than or equal to 40°C, the fluid temperature is low and can exchange heat with the electric drive device 61. In this case, the oil medium does not need to pass through the heat exchange component 10 for heat exchange. When the fluid temperature exceeds 40°C, the fluid temperature is high, and the oil medium needs to be cooled by the heat exchange component 10 to better cool the electric drive device 61. In other specific embodiments, the temperature threshold can be set according to user needs, for example, it can be 35°C, 30°C, 41°C, 42°C, etc., and the present invention does not limit it in this way.

[0061] The first branch 40 includes structures such as an oil tank, in which the medium oil is stored. By comparing the fluid temperature in the first branch 40 with the temperature threshold, the valve core assembly 31 can be better controlled according to the operating environment of the vehicle, thereby adjusting the fluid temperature by cooling or not cooling, improving the pressure loss of the oil medium, and facilitating the reduction of the driving force of the oil pump 50.

[0062] For example, the first branch 40 may also include a temperature sensor that can detect the fluid temperature in the first branch 40. For example, the temperature sensor can detect the fluid temperature in the fuel tank. The temperature sensor can feed back the detected fluid temperature result to the electronic control unit (ECU), which can be the control system of the car engine. The ECU controls the action of the valve core assembly 31 to improve the response speed of the valve core assembly 31.

[0063] In some embodiments, the control method includes: comparing the fluid temperature in the first branch 40 with a temperature threshold to obtain a first comparison result that the fluid temperature in the first branch 40 is less than or equal to the temperature threshold; and controlling the valve core assembly 31 to move to a position where there is a gap between the valve core assembly 31 and the wall defining the valve port P4, based on the first comparison result. With this configuration, when the vehicle is first started or operating in a cold environment, the fluid temperature in the first branch 40 is low, which can prevent or reduce the entry of oil medium into the heat exchange assembly 10, facilitating a rapid increase in fluid temperature and reducing the wear of the oil pump 50.

[0064] Furthermore, the control method of the thermal management system includes: comparing the fluid temperature in the first branch 40 with a temperature threshold to obtain a second comparison result that the fluid temperature in the first branch 40 is greater than the temperature threshold; and controlling the valve core assembly 31 to move until the valve core assembly 31 abuts against the wall of the limiting valve port P4 according to the second comparison result. Through the above arrangement, the medium oil flowing in from the first fluid inlet P1 can pass through the first heat exchange channel 141, where it can exchange heat with the fluid flowing in the second heat exchange channel 142. Afterward, the medium oil flows out from the second fluid outlet P2 and flows to the electric drive device 61, facilitating cooling of the electric drive device 61.

[0065] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. For example, the directional definitions such as "front", "back", "left", "right", "up", and "down" are used. Although the present invention has been described with reference to the above embodiments, those skilled in the art should understand that they can still modify, combine or make equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. An integrated device (1), characterized in that, The integrated device (1) has a bypass channel (101), a valve chamber (102), and a valve port (P4). The integrated device (1) includes a heat exchange assembly (10), a connecting assembly (20), and a valve core assembly (31). The heat exchange assembly (10) has a first fluid inlet (P1), a connecting port (P3), and a first heat exchange channel (141). The first fluid inlet (P1) communicates with the connecting port (P3) through a portion of the first heat exchange channel (141). The connecting assembly (20) is sealed to the heat exchange assembly (10). (20) Covering the communication port (P3), the connecting assembly (20) forms at least a portion of the wall of the bypass channel (101) and the connecting assembly (20) forms at least a portion of the wall of the valve cavity (102), at least a portion of the valve core assembly (31) is located in the valve cavity (102), the connecting assembly (20) includes a sealed valve body (24) and a connector (23), the valve body (24) defines at least a portion of the wall of the valve cavity (102), and the valve port (P4) is located in the connector (23) or the valve body (24). The valve port (P4) is connected to the bypass channel (101), the connecting port (P3) is connected to the valve cavity (102), and the valve core assembly (31) can move towards or away from the valve port (P4) to adjust the connection state between the connecting port (P3) and the valve port (P4).

2. The integrated device (1) according to claim 1, characterized in that, The first heat exchange channel (141) includes a first corner hole channel (TD1), the first fluid inlet (P1) is connected to the communication port (P3) through the first corner hole channel (TD1), and the valve core assembly (31) and the connection assembly (20) are located on the side of the heat exchange assembly (10) away from the first fluid inlet (P1).

3. The integrated device (1) according to claim 2, characterized in that, The heat exchange assembly (10) also has a first fluid outlet (P2), and the first heat exchange channel (141) further includes a second corner hole channel (TD2) and an inter-plate channel (TD3). The inter-plate channel (TD3) connects the first corner hole channel (TD1) and the second corner hole channel (TD2). The first fluid inlet (P1) is connected to the connecting port (P3) through the first corner hole channel (TD1). The first fluid outlet (P2) is located downstream of the connecting port (P3) and is connected to the second corner hole channel (TD2). The integrated device (1) has a first working mode. In the first working mode, the first fluid inlet (P1) is connected to the first fluid outlet (P2) through the first corner hole channel (TD1), the second corner hole channel (TD2) and the inter-plate channel (TD3). The first fluid inlet (P1) is also connected to the first fluid outlet (P2) through the first corner hole channel (TD1), the connecting port (P3), the valve port (P4), the bypass channel (101), and the second corner hole channel (TD2).

4. The integrated device (1) according to claim 3, characterized in that, The heat exchange assembly (10) includes a first side plate (11), a second side plate (12), and a heat exchange core (13). The first side plate (11) and the second side plate (12) are arranged along the height direction of the heat exchange assembly (10). At least a portion of the heat exchange core (13) is located between the first side plate (11) and the second side plate (12). The first fluid inlet (P1) and the first fluid outlet (P2) are located on the first side plate (11), and the connecting port (P3) is located on the second side plate (12). The connector (23) and the second side plate (12) are sealed together to define at least a portion of the bypass passage (101).

5. The integrated device (1) according to claim 4, characterized in that, The heat exchange assembly (10) includes a second heat exchange channel (142). In the heat exchange assembly (10), the second heat exchange channel (142) is fluidly isolated from the first heat exchange channel (141). The heat exchange assembly (10) also includes a connecting pipe (15). The connecting pipe (15) is sealed to the second side plate (12) or the connector (23). The channel of the connecting pipe (15) is connected to the second heat exchange channel (142). Along the height direction of the heat exchange assembly (10), at least a portion of the connecting assembly (20) and at least a portion of the pipe fitting (15) are at the same height.

6. The integrated device (1) according to claim 4, characterized in that, The heat exchange core (13) includes heat exchange plates (131) stacked along the height direction of the heat exchange assembly (10), the connector (23) is covered on the outer periphery of the second side plate (12), a portion of the connector (23) is at the same height as the second side plate (12), and a portion of the connector (23) is sealed with the heat exchange plate (131) to define a portion of the wall of the first corner hole channel (TD1) and / or a portion of the wall of the second corner hole channel (TD2); Alternatively, along the height direction of the heat exchange assembly (10), the connector (23) is located on the side of the second side plate (12) away from the first side plate (11).

7. The integrated device (1) according to claim 4, characterized in that, The integrated device (1) further includes a drive assembly (32) and a snap-fit ​​component (33). The drive assembly (32) includes a drive housing (321). One of the drive housing (321) and the valve body (24) is embedded in the other, and the drive housing (321) and the valve body (24) are sealed together. The snap-fit ​​component (33) passes through the valve body (24) and the drive housing (321), and the valve body (24) and the drive housing (321) are connected by the snap-fit ​​component (33). The drive assembly (32) further includes a coil assembly (322), a stationary iron core (324), and a moving iron core (323). The coil assembly (322) is located within the space defined by the drive housing (321), or the coil assembly (322) and the drive housing (321) are integrally injection molded structures. At least a portion of the moving iron core (323) is located on the inner circumference side of the coil assembly (322). The valve core assembly (31) includes a valve stem. The moving iron core (323) and the valve stem are integral structures or limited settings. The moving iron core (323) can move towards or away from the stationary iron core (324). The drive assembly (32) further includes an isolation cover (35) and a first seal (34), the first seal (34) being located between the isolation cover (35) and the drive housing (321), at least a portion of the isolation cover (35) being located between the moving iron core (323) and the coil assembly (322), the valve core assembly (31) further having a balance hole (36) and a balance cavity (37), the balance cavity (37) being located on the side of the first seal (34) away from the valve cavity (102), the balance hole (36) communicating the bypass channel (101) with the balance cavity (37).

8. The integrated device (1) according to claim 3, characterized in that, The heat exchange assembly (10) includes a first side plate (11), a second side plate (12), and a heat exchange core (13). The first side plate (11) and the second side plate (12) are arranged along the height direction of the heat exchange assembly (10). At least a portion of the heat exchange core (13) is located between the first side plate (11) and the second side plate (12). The first fluid inlet (P1) and the first fluid outlet (P2) are located on the first side plate (11). The connection port (P3) is located on the second side plate (12), the connection assembly (20) includes a valve body (24) and a connector (23) that are sealed together, the bypass channel (101) is located on the connector (23), and the connector (23) is sealed together with the heat exchange assembly (10).

9. The integrated device (1) according to any one of claims 1 to 8, characterized in that, The heat exchange assembly (10) also has a first fluid outlet (P2), the bypass channel (101) and the first heat exchange channel (141) are both connected to the first fluid outlet (P2), the integrated device (1) also has a second working mode, in which the valve core assembly (31) abuts against the wall defining the valve port (P4), and the first fluid inlet (P1) is connected to the first fluid outlet (P2) through the first heat exchange channel (141).

10. A thermal management system (2), characterized in that, The device includes an oil pump (50) and an integrated device (1) according to any one of claims 1 to 9, wherein the oil pump (50) has a first pump port (51) in communication with the first fluid inlet (P1).

11. A control method for a thermal management system, characterized in that, For controlling the thermal management system (2) of claim 10, the thermal management system (2) includes a first branch (40), the first branch (40) being located upstream of the oil pump (50), and the channel in the first branch (40) communicating with the channel in the oil pump (50), the control method includes: The fluid temperature in the first branch (40) is compared with the temperature threshold to obtain the comparison result; Based on the comparison results, the valve core assembly (31) is controlled to move closer to or further away from the valve port (P4) to adjust the connection state between the communication port (P3) and the valve port (P4).

12. The control method for the thermal management system according to claim 11, characterized in that, The control method includes: The fluid temperature in the first branch (40) is compared with the temperature threshold to obtain a first comparison result in which the fluid temperature in the first branch (40) is less than or equal to the temperature threshold. Based on the first comparison result, the valve core assembly (31) is controlled to move until there is a gap between the valve core assembly (31) and the wall defining the valve port (P4).

13. The control method for the management system according to claim 11 or 12, characterized in that, The control method includes: The fluid temperature in the first branch (40) is compared with the temperature threshold to obtain a second comparison result in which the fluid temperature in the first branch (40) is greater than the temperature threshold. Based on the second comparison result, control the valve core assembly (31) to move until the valve core assembly (31) abuts against the wall defining the valve port (P4).

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