Shunting device, heat management module and electric drive assembly

Abstract

The invention discloses a shunting device, a heat management module and an electric drive assembly, and relates to the technical field of vehicles. The flow dividing device comprises a shell, a flow guiding assembly, a filtering piece and a control valve. The shell is provided with a mounting cavity and a liquid inlet hole communicated with the mounting cavity, and the liquid inlet hole is used for being communicated with a liquid outlet of a liquid feeding device; the flow guide assembly is arranged in the shell and provided with a first flow channel and a second flow channel, a first liquid inlet of the first flow channel and a second liquid inlet of the second flow channel both communicate with the mounting cavity, and a first liquid outlet of the first flow channel and a second liquid outlet of the second flow channel communicate with a liquid inlet of the cooling device and a liquid inlet of the electric driving assembly correspondingly; the filtering piece is arranged at the first liquid inlet and used for filtering the cooling medium; and the control valve can be switched between an opening position for opening the second flow channel and a closing position for closing the second flow channel.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a power distribution device, a thermal management module, and an electric drive assembly. Background Technology

[0002] The electric drive system is one of the key components of an electric vehicle, including the motor, reducer, and drive housing. The motor and reducer rely on oil lubrication during operation, and the oil circulation also absorbs heat for auxiliary cooling.

[0003] The thermal management module is used for pumping oil, filtering, and regulating oil temperature. It includes components such as an oil pump, a temperature control valve, a suction filter, a filter press, an oil cooler, and control valves. The temperature control valve is connected in parallel with the oil cooler and can open or close based on the real-time oil temperature. At low temperatures, the temperature control valve is open, and the oil flows directly into the motor and reducer after passing through it. At high temperatures, the temperature control valve is closed, and the oil is cooled by the oil cooler before entering the motor and reducer. Both the suction filter and the filter press filter are responsible for filtering the oil to prevent impurities from clogging components such as the oil cooler. The control valve prevents oil backflow.

[0004] In related technologies, the setting of temperature control valves in thermal management modules leads to higher production costs for these modules. Summary of the Invention

[0005] Based on this, this application provides a shunt device, a thermal management module, and an electric drive assembly to solve the problem of high production cost of thermal management modules in related technologies.

[0006] Firstly, embodiments of this application provide a diversion device.

[0007] An electric drive assembly for use in vehicles, the electric drive assembly including a fluid delivery device, a cooling device, and an electric drive component; the shunt device includes:

[0008] The housing has a mounting cavity and a liquid inlet communicating with the mounting cavity, the liquid inlet being used to communicate with the liquid outlet of the liquid delivery device;

[0009] A flow guiding component is disposed within the housing and has a first flow channel and a second flow channel. The first liquid inlet of the first flow channel and the second liquid inlet of the second flow channel are both connected to the mounting cavity. The first liquid outlet of the first flow channel and the second liquid outlet of the second flow channel are respectively connected to the liquid inlet of the cooling device and the liquid inlet of the electric drive component.

[0010] A filter element, disposed at the first liquid inlet, is used to filter the cooling medium; and,

[0011] The control valve is capable of switching between the open position of opening the second flow channel and the closed position of closing the second flow channel;

[0012] The control valve and the filter element are configured such that: when the oil temperature is lower than a set value, the control valve is in the open position under the action of the cooling medium; when the oil temperature is higher than the set value, the cooling medium passes through the filter element, and the control valve is in the closed position.

[0013] In some embodiments, the flow guiding component includes:

[0014] The first fluid guide has the second liquid inlet;

[0015] The second guide fluid has the second flow channel and the second drain port; and,

[0016] The third guide fluid is sleeved outside the second guide fluid, has the first inlet, and together with the second guide fluid, forms the first outlet and the first flow channel.

[0017] In some embodiments, the third fluid guide has a plurality of first inlets, which are spaced apart around the extension direction of the second fluid guide.

[0018] In some embodiments, the filter element is fitted over the third fluid guide.

[0019] In some embodiments, the third guide fluid further has a first limiting groove, the first guide fluid has a second limiting groove, the first limiting groove and the second limiting groove are arranged opposite to each other along the axial direction of the filter element, and the two sides of the filter element are respectively located in the first limiting groove and the second limiting groove, and the first guide fluid is detachably connected to the third guide fluid.

[0020] In some embodiments, the cross-section of the first flow channel is annular.

[0021] In some embodiments, the housing further has a connector communicating with the mounting cavity, through which the flow guiding assembly extends into the housing and is sealed to the connector.

[0022] In some embodiments, the flow guiding assembly further has a flow-gathering groove communicating with the mounting cavity, and the first liquid inlet is formed on the bottom wall of the flow-gathering groove.

[0023] In some embodiments, the flow-gathering groove and the second flow channel are arranged opposite to each other along the extension direction of the second flow channel.

[0024] In some embodiments, the control valve includes:

[0025] The valve core is movably disposed within the second flow channel; and,

[0026] The reset element acts on the valve core and the flow guiding assembly, applying a force toward the second inlet to the valve core.

[0027] Secondly, embodiments of this application provide a thermal management module, including:

[0028] The diversion device described in the first aspect;

[0029] A liquid delivery device, wherein the outlet of the liquid delivery device is connected to the inlet of the diversion device; and...

[0030] A cooling device, wherein the inlet of the cooling device is connected to the first outlet of the diversion device.

[0031] Thirdly, embodiments of this application provide an electric drive assembly, including:

[0032] Electric drive components; and,

[0033] In the second aspect, the thermal management module is described in which the outlet of the cooling device and the second drain port of the diversion device are both connected to the inlet of the electric drive assembly.

[0034] This application has at least the following beneficial effects:

[0035] The flow diversion device provided in this application includes a housing, a flow guiding assembly, a filter element, and a control valve. Through the integrated design of these components, it specifically addresses the drawbacks of traditional thermal management modules that rely on temperature-controlled valves. The flow guiding assembly integrates two independent flow channels: a first flow channel and a second flow channel. A control valve is installed within the second flow channel, and the filter element covers the first inlet connecting to the first flow channel. The filter element not only performs fine filtration of high-temperature oil but also utilizes the characteristic of oil viscosity changing with temperature to create a flow resistance difference adapted to the oil temperature. The control valve, based on its own pressure response characteristics, is linked to the oil pressure within the mounting cavity, enabling adaptive switching between open and closed states without the need for additional drive components. Compared to traditional control methods that rely on temperature-controlled valves, the flow diversion device provided in this application not only eliminates the material input of high-cost temperature-controlled valves but also simplifies the auxiliary structures such as mounting brackets and control circuits associated with temperature-controlled valves. This helps reduce the overall production cost and assembly complexity of the thermal management module, creating conditions for its large-scale application and improving the compactness of the thermal management module. Furthermore, all components work together within the enclosed space of the casing. The filter can intercept impurities to prevent the cooling device from clogging. The oil flow path is adaptively adjusted based on the oil temperature to meet the operating requirements of high and low temperature conditions. At low temperatures, the oil bypasses through the second flow channel and is directly sent to the electric drive component. At high temperatures, the oil is sent to the cooling device through the first flow channel for cooling, and then sent to the electric drive component. This solves the cost and space problems of traditional temperature control valves, while also ensuring the cleanliness of the oil circulation and the adaptability to operating conditions. This further improves the operational stability of the thermal management module, reduces the failure rate, and provides a reliable guarantee for the continuous and efficient operation of the electric drive assembly. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a cross-sectional view of the diversion device when the control valve is in the closed position in some embodiments of this application.

[0038] Figure 2 This is a cross-sectional view of the diversion device when the control valve is in the open position in some embodiments of this application.

[0039] Figure 3 This is a top view of the diversion device after its housing has been hidden in some embodiments of this application.

[0040] Figure 4 For along Figure 3 A cross-sectional view along the AA direction.

[0041] Figure 5 This is a schematic diagram of the structure of the diversion device after the housing is hidden in some embodiments of this application. Figure 1 .

[0042] Figure 6 This is a schematic diagram of an explosion after the diversion device is concealed in the outer casing in some embodiments of this application. Figure 1 .

[0043] Figure 7 This is a schematic diagram of the structure of the diversion device after the housing is hidden in some embodiments of this application. Figure 2 .

[0044] Figure 8 This is a schematic diagram of an explosion after the diversion device is concealed in the outer casing in some embodiments of this application. Figure 2 .

[0045] Figure 9 This is a schematic diagram of the electric drive assembly in some embodiments of this application.

[0046] Explanation of reference numerals in the attached figures:

[0047] 1000-Electric drive assembly, 100-Thermal management module, 10-Diverter, 11-Housing, 11a-Mounting cavity, 11b-Liquid inlet, 11c-Connector, 12-Flow guide assembly, 12a-First flow channel, 12b-First liquid inlet, 12c-First liquid outlet, 12d-Second flow channel, 12e-Second liquid inlet, 12f-Second liquid outlet, 12g-Flow converging channel, 121-First flow guide, 121a-Second limiting groove, 122-Second flow guide, 123-Third flow guide, 123a-First limiting groove, 13-Filter element, 14-Control valve, 141-Valve core, 142-Reset element, 20-Liquid delivery device, 30-Cooling device, 200-Electric drive assembly, 210-Electric drive housing, 210a-Third liquid inlet, 220-Motor, 230-Reducer. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0051] The terms “first,” “second,” and “third” (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0052] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0053] The inclusion of temperature control valves in thermal management modules not only increases production costs and hinders large-scale application, but also occupies significant installation space, limiting the compact design of thermal management modules.

[0054] In view of this, the applicant has designed a shunt device, a thermal management module, and an electric drive assembly. The following is a detailed description of the shunt device, thermal management module, and electric drive assembly provided in the embodiments of this application, with reference to the accompanying drawings.

[0055] like Figure 1 , Figure 2 and Figure 9As shown, this application embodiment provides a diversion device 10, which is applied to an electric drive assembly 1000 of a vehicle. The electric drive assembly 1000 includes a liquid delivery device 20, a cooling device 30, and an electric drive component 200. The diversion device 10 includes a housing 11, a flow guiding assembly 12, a filter element 13, and a control valve 14. The housing 11 has a mounting cavity 11a and a liquid inlet 11b communicating with the mounting cavity 11a. The liquid inlet 11b is used to communicate with the liquid outlet of the liquid delivery device 20. The flow guiding assembly 12 is disposed inside the housing 11 and has a first flow channel 12a and a first liquid inlet 12b and a first liquid outlet 12c communicating with the first flow channel 12a. It also has a second flow channel 12d and a second liquid inlet 12e and a second liquid outlet 12f communicating with the second flow channel 12d. The first liquid inlet 12b and the second liquid inlet 12e are both connected to the mounting cavity 11a, and the first liquid outlet 12c is used to communicate with the cooling device 30. The first inlet 12b is connected to the second outlet 12f, which is connected to the inlet of the electric drive assembly 200. The filter element 13 is disposed at the first inlet 12b and is used to filter the cooling medium. The control valve 14 can switch between the open position of the second flow channel 12d and the closed position of the second flow channel 12d. The control valve 14 and the filter element 13 are configured such that when the temperature of the cooling medium is lower than the set value, the control valve 14 is in the open position under the action of the cooling medium. When the temperature of the cooling medium is higher than the set value, the cooling medium passes through the filter element 13 and the control valve 14 is in the closed position.

[0056] The outer casing 11 supports components such as the flow guide assembly 12, filter element 13, and control valve 14, serving as the mounting base for each component. Its structural strength must meet the oil working pressure requirements. The mounting cavity 11a accommodates the flow guide assembly 12, filter element 13, control valve 14, and cooling medium, providing a closed space for each component. The electric drive assembly 200 may include an electric drive casing 210, a motor 220, and a reducer 230. The motor 220 and reducer 230 rely on the cooling medium for lubrication during operation, and simultaneously absorb heat through the circulation of the cooling medium to achieve auxiliary cooling. The cooling medium can be oil; for ease of description below, oil will be used as the cooling medium.

[0057] like Figure 9 As shown, when the diversion device 10 is in use, the inlet port 11b is connected to the outlet port of the delivery device 20, the first drain port 12c is connected to the inlet port of the cooling device 30, and the outlet port and the second drain port 12f of the cooling device 30 are both connected to the downstream electric drive assembly 200, realizing the circulation and transportation of oil. The inlet port 11b is used to receive the oil output from the delivery device 20. After the oil flows into the mounting cavity 11a from the inlet port 11b, it enters different flow channels according to the oil temperature, realizing diversion and regulation.

[0058] The liquid delivery device 20 is used to provide circulation power for the oil, such as an oil pump; the cooling device 30 is used to dissipate heat and cool the oil, such as an oil cooler, and its specific type is not limited in this embodiment.

[0059] The flow guiding assembly 12 is used to divert the oil in the mounting cavity 11a. Specifically, it has a first flow channel 12a and a second flow channel 12d that are independent of each other. The second flow channel 12d serves as a bypass channel for low-temperature oil. It receives the oil in the mounting cavity 11a through the second inlet 12e and delivers it to the downstream electric drive assembly 200 through the second outlet 12f without needing to be cooled by the cooling device 30. The first flow channel 12a serves as a cooling channel for high-temperature oil. It receives the oil in the mounting cavity 11a through the first inlet 12b, filters it through the filter element 13, discharges it through the first outlet 12c, and enters the cooling device 30 for cooling. After cooling, it is then delivered to the downstream electric drive assembly 200.

[0060] It should be noted that the structure and flow cross-sectional dimensions of the cavities such as the first flow channel 12a, the second flow channel 12d, the first inlet 12b, the first outlet 12c, the second inlet 12e, and the second outlet 12f are all adapted to the oil flow requirements of the corresponding working conditions. The specific dimensions can be designed by the user according to the actual working conditions, and this application does not limit them.

[0061] The filter element 13 is disposed at the first liquid inlet 12b and is used to filter the oil entering the first flow channel 12a. It can effectively intercept metal debris and impurity particles in the oil, preventing impurities from entering the cooling device 30 and causing pipeline blockage or reduced heat exchange efficiency, while protecting downstream components from wear. The structure of the filter element 13 can be selected according to the actual filtration accuracy requirements, and can be selected as a metal mesh filter element, paper filter element, glass fiber filter element, etc. Its external dimensions are adapted to the cavity structure of the first liquid inlet 12b, and it can be installed in a detachable manner for easy maintenance and replacement. This application does not limit the specific material and installation method of the filter element 13.

[0062] Understandably, when the oil temperature is low (i.e., below the set value), the oil viscosity is high, resulting in greater resistance to flow through the filter element 13, making it difficult for the oil to pass through the filter element 13 and enter the first flow channel 12a. When the oil temperature is high (i.e., above the set value), the oil viscosity is low, reducing the resistance to flow through the filter element 13, allowing the oil to pass smoothly through the filter element 13, complete filtration, and enter the first flow channel 12a. The set value refers to the critical temperature at which the oil viscosity just overcomes the resistance of the filter element 13, allowing the oil to pass smoothly through the filter element 13 and enter the first flow channel 12a. The specific value of the set value can be adaptively set according to the oil type, the precision of the filter element 13, and the working requirements of the control valve 14; this application does not impose specific limitations on this.

[0063] The on / off state of control valve 14 is linked to the oil pressure in mounting cavity 11a, enabling adaptive control without additional drive components. Specifically, under normal and low temperature conditions, the oil viscosity is high, making it difficult to pass through filter element 13 and causing it to accumulate in mounting cavity 11a. This leads to an increase in oil pressure in mounting cavity 11a, which pushes control valve 14 to prevent it from blocking the second flow channel 12d, keeping it open. When the oil temperature rises, the oil viscosity decreases, allowing it to pass through filter element 13 smoothly. The oil pressure in mounting cavity 11a drops, and control valve 14 automatically switches to the closed state under its own reset characteristic, blocking the second flow channel 12d. Control valve 14 can be located inside or outside the second flow channel 12d, and this is not limited in this embodiment. Furthermore, control valve 14 can be designed as a one-way valve, allowing oil to flow unidirectionally along the second flow channel 12d. This prevents oil from flowing back into mounting cavity 11a from the electric drive component 200 side, ensuring the unidirectional flow of oil and system stability.

[0064] The principle of the diversion device 10 provided in this application embodiment is as follows:

[0065] After being drawn by the delivery device 20, the oil flows into the mounting cavity 11a of the housing 11 through the inlet 11b. When the oil temperature is lower than the set value (i.e., the heat dissipation threshold is not reached), the oil viscosity is high, and the resistance to flow through the filter element 13 is large. The oil has difficulty passing through the filter element 13 and entering the first flow channel 12a, thus accumulating in the mounting cavity 11a and causing the oil pressure in the mounting cavity 11a to rise. The oil will push the control valve 14 to prevent it from blocking the second flow channel 12d and keep it open. At this time, the oil in the mounting cavity 11a flows through the second flow channel 12d, that is, it enters the second flow channel 12d through the second inlet 12e, and is then directly delivered to the downstream electric drive component 200 through the second outlet 12f. It does not need to be cooled by the cooling device 30, avoiding excessive cooling of the low-temperature oil and further increase in viscosity. This reduces the operating resistance and energy loss of the motor 220 and reducer 230 of the electric drive component 200, ensuring working efficiency under low-temperature conditions.

[0066] When the oil temperature exceeds the set value (i.e., reaches the heat dissipation threshold), the oil viscosity decreases and its fluidity increases. The resistance to flow through the filter element 13 decreases, allowing the oil to smoothly pass through the filter element 13 and enter the first flow channel 12a. The oil pressure in the mounting cavity 11a then drops, and the control valve 14, lacking sufficient oil pressure support, switches to the closed position, blocking the second flow channel 12d and its bypass path. At this time, the oil in the mounting cavity 11a, after being filtered by the filter element 13 at the first inlet 12b, enters the first flow channel 12a and is then transported to the cooling device 30 through the first outlet 12c. The cooling device 30 cools the oil through heat exchange with the external environment, and the cooled oil is then transported to the downstream electric drive assembly 200. This process not only intercepts impurities through the filter element 13 to prevent clogging of the cooling device 30 but also efficiently dissipates heat from the high-temperature oil, achieving adaptive temperature control without the need for a temperature control valve, while also meeting the requirements of cost control and a compact design for the thermal management module 100.

[0067] In summary, the diversion device 10 provided in this application embodiment includes a housing 11, a flow guiding assembly 12, a filter element 13, and a control valve 14. Through the integrated design of each component, it specifically solves the drawback of the traditional thermal management module 100 relying on a temperature control valve. Among them, the flow guiding assembly 12 integrates two independent first flow channels 12a and second flow channels 12d. The control valve 14 is installed in the second flow channel 12d. The filter element 13 covers the first liquid inlet 12b that connects to the first flow channel 12a. The filter element 13 not only achieves the function of fine filtration of high-temperature oil, but also relies on the characteristic of oil viscosity changing with temperature to form a flow resistance difference adapted to the oil temperature. The control valve 14, based on its own pressure response characteristics, forms a linkage with the oil pressure in the mounting cavity 11a, and can complete the adaptive switching of the open and closed states without additional driving components. Compared to the traditional control method that relies on temperature control valves, the diversion device 10 provided in this application embodiment not only eliminates the material input of high-cost temperature control valves, but also simplifies the auxiliary structures such as the mounting brackets and control circuits that are matched with temperature control valves. This helps to reduce the overall production cost and assembly complexity of the thermal management module 100, creating conditions for its large-scale promotion and application, while also helping to improve the compactness of the thermal management module 100. Furthermore, all components work together within the enclosed space of the housing 11. The filter element 13 can intercept impurities to prevent the cooling device 30 from becoming clogged. The oil flow path is adaptively adjusted based on the oil temperature to meet the operating requirements of high and low temperature conditions. At low temperatures, the oil bypasses through the second flow channel 12d and is directly sent to the electric drive assembly 200. At high temperatures, the oil is sent to the cooling device 30 for cooling through the first flow channel 12a, and then sent to the electric drive assembly 200. This solves the cost and space problems of traditional temperature control valves, while also ensuring the cleanliness of the oil circulation and the adaptability to operating conditions. This further improves the operational stability of the thermal management module 100, reduces the failure rate, and provides a reliable guarantee for the continuous and efficient operation of the electric drive assembly 1000.

[0068] like Figures 3 to 8 As shown, in some embodiments, the flow guiding assembly 12 includes a first flow guiding fluid 121, a second flow guiding fluid 122, and a third flow guiding fluid 123. The first flow guiding fluid 121 has a second inlet 12e; the second flow guiding fluid 122 has a second flow channel 12d and a second outlet 12f; the third flow guiding fluid 123 is sleeved outside the second flow guiding fluid 122 and has a first inlet 12b. The third flow guiding fluid 123 and the second flow guiding fluid 122 together form a first outlet 12c and a first flow channel 12a.

[0069] In these embodiments, the connection methods of the first fluid guide 121, the second fluid guide 122, and the third fluid guide 123 are flexible and diverse. They can be connected in pairs or in all three, and then one or more of them are fixed to the outer shell 11. Alternatively, they can be connected to the outer shell 11 independently without direct connection to each other, as long as the sealing of each flow channel and the smooth flow of oil can be guaranteed. The specific connection method can be snap-fit, threaded connection, adhesive, etc., which are not limited in the embodiments of this application.

[0070] Understandably, one end of the second guide fluid 122 forming the second drain port 12f extends outside the housing 11 to facilitate connection with external pipes and transport oil to the downstream electric drive assembly 200. Similarly, one end of the second guide fluid 122 and the third guide fluid 123 forming the first drain port 12c also extends outside the housing 11 to connect with the inlet of the cooling device 30. One end of the first guide fluid 121 forming the second inlet port 12e needs to extend into the mounting cavity 11a of the housing 11 to achieve communication between the second inlet port 12e and the mounting cavity 11a, ensuring that the oil can smoothly enter the second flow channel 12d. One end of the third guide fluid 123 forming the first inlet port 12b also extends into the mounting cavity 11a of the housing 11 to achieve communication between the first inlet port 12b and the mounting cavity 11a, ensuring that the oil can smoothly enter the first flow channel 12a.

[0071] Based on the structural design of the aforementioned flow guiding component 12, the following beneficial effects can be achieved: First, the separate structure of the first flow guiding component 121, the second flow guiding component 122, and the third flow guiding component 123, compared to an integrated structure, allows each flow guiding component to be individually processed with its corresponding flow channel, inlet / outlet, and mating structure, making it easier to process and form. This also reduces the processing difficulty of complex cavities, decreases the scrap rate, and effectively controls production costs. Furthermore, the separate design facilitates later inspection and maintenance. If a single flow guiding component malfunctions, it can be disassembled and replaced individually without replacing the entire flow guiding component 12, effectively reducing maintenance costs and equipment downtime. Second, the enclosed design of the third flow guiding component 123 surrounding the second flow guiding component 122 allows for the simultaneous formation of independent first flow channels 12a and second flow channels 12d within a limited space, eliminating the need for additional space for flow channel installation. The separate enclosed design further reduces the processing difficulty of the first outlet 12c and the first flow channel 12a.

[0072] like Figure 6 As shown, in some embodiments, the third fluid guide 123 has a plurality of first inlets 12b, which are spaced apart around the extension direction of the second fluid guide 122.

[0073] Firstly, the multiple first inlets 12b are spaced apart around the second guide fluid 122, which increases the total flow area of ​​the oil entering the first flow channel 12a. Simultaneously, it allows oil to enter the mounting cavity 11a from multiple directions around the perimeter, reducing localized oil accumulation caused by a single first inlet 12b. This results in more uniform oil distribution and ensures that the oil can quickly pass through the filter element 13 and enter the first flow channel 12a under high-temperature conditions, thus being promptly delivered to the cooling device 30 for heat exchange. Secondly, the design of multiple first inlets 12b provides redundancy. If a single first inlet 12b is blocked by impurities, the remaining inlets can still deliver oil normally. This effectively reduces the risk of flow interruption in the first flow channel 12a due to blockage of a single first inlet 12b, improving the operational reliability of the diversion device 10 and reducing downtime. Third, the arrangement of multiple first liquid inlets 12b around the second fluid guide 122 can make full use of the annular space between the third fluid guide 123 and the second fluid guide 122 to arrange the oil inlet structure without the need for additional installation space. This improves the oil inlet efficiency while also enhancing the compactness of the thermal management module 100.

[0074] The shape of the first liquid inlet 12b can be flexibly designed, and can be rectangular, circular, elliptical, polygonal, etc. The specific shape can be determined in combination with the structural space of the third guide fluid 123, the oil flow requirements and the adaptability of the processing technology. This application does not limit it in this regard.

[0075] In some embodiments, the first inlet 12b is rectangular, and a plurality of rectangular first inlets 12b are evenly spaced around the axial direction of the second guide fluid 122 and arranged in multiple rows along the axial direction of the second guide fluid 122. This helps to make the first inlets 12b compactly arranged, allowing the oil to enter the first flow channel 12a more evenly from the mounting cavity 11a and enhancing the oil pressure balance.

[0076] In some embodiments, the filter element 13 is sleeved outside the third guide fluid 123.

[0077] Specifically, the filter element 13 adopts an annular sleeve structure, that is, the filter element 13 is an annular cylindrical shape adapted to the third fluid guide 123. Its inner diameter matches the outer diameter of the third fluid guide 123. It can be tightly sleeved on the outside of the area of ​​the third fluid guide 123 where the first liquid inlet 12b is located, and can fully cover all the first liquid inlets 12b. This ensures that the oil entering the first liquid inlet 12b from the mounting cavity 11a must pass through the filter element 13 before flowing in, without any filtration blind spots.

[0078] The annular sleeve arrangement can simultaneously cover multiple first inlets 12b. Compared to the design where a single first inlet 12b corresponds to a single filter element 13, this simplifies the overall structure of the filter element 13. It eliminates the need for a separate filter component designed for each first inlet 12b, reducing the number of filter elements 13 and assembly steps, thus helping to control production costs. Simultaneously, the annular filter element 13 has a higher degree of integration, making the overall structure of the diversion device 10 more compact. In these embodiments, the filter element 13 can be fixed using simple structures such as interference fits and snap-fit ​​positioning, eliminating the need for complex installation connectors.

[0079] like Figure 6 and Figure 8 As shown, in some embodiments, the third guide fluid 123 further has a first limiting groove 123a, and the first guide fluid 121 has a second limiting groove 121a. Along the axial direction of the filter element 13, the first limiting groove 123a and the second limiting groove 121a are arranged opposite to each other, and the two sides of the filter element 13 are respectively located in the first limiting groove 123a and the second limiting groove 121a. The first guide fluid 121 is detachably connected to the third guide fluid 123.

[0080] The detachable connection method is diverse, such as snap-fit ​​or threaded connection, and this application does not limit it. The filter element 13 is embedded in two limiting grooves on both sides. The inner walls of the first limiting groove 123a and the second limiting groove 121a are both fitted to the filter element 13, jointly restricting the axial and radial displacement of the filter element 13. This prevents the filter element 13 from shifting or loosening due to oil impact or equipment vibration, ensuring the sealing between the filter element 13 and the third guide fluid 123, preventing unfiltered oil from leaking through gaps and directly entering the first inlet 12b, while also improving the working stability of the filter element 13. Because the first guide fluid 121 and the third guide fluid 123 are detachably connected, when the filter element 13 reaches the end of its service life or becomes clogged or damaged, the first guide fluid 121 can be easily disassembled, the old filter element 13 removed, and a new one replaced, without disassembling the entire guide assembly 12 or the outer shell 11.

[0081] In some embodiments, the cross-section of the first flow channel 12a is annular.

[0082] The cross section refers to the section taken perpendicular to the extension direction of the first flow channel 12a. This annular cross section is formed by the structural fit of the flow guiding assembly 12. Specifically, the third flow guide 123 is sleeved outside the second flow guide 122. The inner wall of the third flow guide 123 is a cylindrical surface, and the outer wall of the second flow guide 122 is a cylindrical surface that matches the inner wall of the third flow guide 123. When the two are arranged coaxially, an annular gap is formed between the inner wall and the outer wall. This gap is the first flow channel 12a, and its cross section is naturally annular.

[0083] Designing the cross-section of the first flow channel 12a as an annular shape helps reduce frictional resistance during oil flow, suppress turbulence generation, reduce local pressure loss, energy loss and noise caused by turbulence, and improve the flow efficiency of oil in the first flow channel 12a.

[0084] like Figure 1 As shown, in some embodiments, the housing 11 also has a connector 11c communicating with the mounting cavity 11a, and the flow guiding assembly 12 extends into the housing 11 through the connector 11c and is sealed to the connector 11c of the housing 11.

[0085] The shape and size of the connector 11c must be compatible with the external structure of the flow guide assembly 12 to ensure that the flow guide assembly 12 can be smoothly inserted and fit tightly. A sealed connection can be achieved by setting sealing rings or other sealing elements at the mating gap between the connector 11c and the flow guide assembly 12. An interference fit or compression structure can be used to enhance the sealing effect, preventing oil leakage from the mating gap, ensuring the sealing of the mounting cavity 11a, and providing a stable sealed environment for oil circulation and oil pressure control. In embodiments where the flow guide assembly 12 includes a third flow guide 123, the sealed connection is specifically achieved between the third flow guide 123 and the connector 11c of the outer shell 11.

[0086] like Figure 1 and Figure 2 As shown, in some embodiments, the flow guiding component 12 also has a flow gathering groove 12g communicating with the mounting cavity 11a, and a second liquid inlet 12e is formed on the bottom wall of the flow gathering groove 12g.

[0087] The opening of the flow-collecting groove 12g faces the interior of the mounting cavity 11a and is used to receive the oil accumulated in the mounting cavity 11a, which is then collected by the second inlet 12e located on its bottom wall. Under low-temperature conditions, the oil has high viscosity and is difficult to pass through the filter element 13, so it will accumulate in the mounting cavity 11a and flow into the flow-collecting groove 12g. The flow-collecting groove 12g can buffer and stabilize the flow of the oil, preventing the oil from directly impacting the second inlet 12e, while ensuring that the oil continuously and stably enters the second flow channel 12d through the second inlet 12e. In embodiments where the flow guiding assembly 12 includes a first flow guide 121, the flow-collecting groove 12g can be located at the end of the first flow guide 121 that extends into the mounting cavity 11a.

[0088] like Figure 4 As shown, in some embodiments, the flow-gathering groove 12g and the second flow channel 12d are arranged opposite to each other along the extension direction of the second flow channel 12d.

[0089] In these embodiments, the second flow channel 12d extends in a straight line, and the flow-gathering tank 12g is positioned opposite to the second flow channel 12d along this extension direction, such that the second inlet 12e on the bottom wall of the flow-gathering tank 12g is aligned with the inlet of the second flow channel 12d. After the oil is gathered by the flow-gathering tank 12g, it can directly enter the second flow channel 12d along a straight path, which can reduce the turning resistance and eddy current loss of the oil flow. This is suitable for the characteristics of high viscosity and poor fluidity of oil under low temperature conditions, and can ensure that the oil can quickly bypass the second flow channel 12d, reduce the operating resistance of downstream components, and ensure low temperature start-up and operating efficiency.

[0090] In some embodiments, the control valve 14 includes a valve core 141 and a reset member 142. The valve core 141 is movably disposed within the second flow channel 12d. The reset member 142 acts on the valve core 141 and the flow guide assembly 12, and applies a force toward the second inlet 12e to the valve core 141.

[0091] Under the elastic force of the reset member 142, the valve core 141 normally abuts against and blocks the second flow channel 12d, keeping the second flow channel 12d in a closed state. When the oil accumulates in the mounting cavity 11a under low temperature conditions, causing the oil pressure to rise, the thrust generated by the oil on the valve core 141 is greater than the force applied by the reset member 142. The oil pushes the valve core 141 to move away from the second inlet port 12e, causing the reset member 142 to undergo elastic deformation and open the second flow channel 12d. The oil can then smoothly enter the second flow channel 12d through the second inlet port 12e to achieve bypass. When the oil temperature rises, the oil can smoothly pass through the filter 13 and enter the first flow channel 12a. The oil pressure in the mounting cavity 11a drops, the reset member 142 releases elastic potential energy, and drives the valve core 141 to reset and block the second flow channel 12d again, closing the second inlet port 12e, thus achieving adaptive switching of the second flow channel 12d on and off.

[0092] The reset component 142 can be a component with elastic reset function, such as a spring or elastic rubber component. Its elastic deformation is not limited to compression; tensile deformation can also achieve the reset function. The specific connection method can be adapted according to the deformation form: if it is a compression deformation, the two ends of the reset component 142 can respectively abut against the valve core 141 and the flow guide component 12, without the need for a fixed connection; if it is a tensile deformation, the two ends of the reset component 142 can be respectively connected and fixed to the valve core 141 and the flow guide component 12.

[0093] This application does not limit the specific material, structure, deformation form, or connection method of the reset element 142, as long as it can provide a stable elastic force to drive the valve core 141 to reset. It should be noted that the structure, size, material, etc. of the valve core 141 can be designed according to the adaptability of the second flow channel 12d and the working pressure requirements. For example, it can be cylindrical, spherical, etc. This application does not limit it, as long as it can be movably installed in the second flow channel 12d to realize the on / off control of the second liquid inlet 12e.

[0094] In some embodiments, the reset member 142 is a spring, with one end abutting against the valve core 141 and the other end abutting against the flow guide assembly 12. Its initial state is set to a compressed state, and the elastic force generated by the compression deformation continuously provides the valve core 141 with a thrust toward the second liquid inlet 12e, thereby realizing the adaptive reset of the valve core 141.

[0095] like Figure 9 As shown, this application embodiment also provides a thermal management module 100, including a liquid delivery device 20, a cooling device 30, and a diversion device 10 in any of the above embodiments; the liquid outlet of the liquid delivery device 20 is connected to the liquid inlet 11b of the diversion device 10; the liquid inlet of the cooling device 30 is connected to the first drain outlet 12c of the diversion device 10.

[0096] The thermal management module 100 provides oil suitable for the operating conditions to the electric drive assembly 200. Through delivery by the delivery device 20, adaptive temperature-controlled distribution by the diversion device 10, cooling by the cooling device 30, and filtration by the filter element 13, the oil achieves circulation, cooling, purification, and precise distribution, ensuring stable operation of downstream components. Since the thermal management module 100 includes the aforementioned diversion device 10, it naturally possesses all the beneficial effects of the diversion device 10, which will not be elaborated upon here.

[0097] like Figure 9 As shown, this application embodiment also provides an electric drive assembly 1000, including an electric drive component 200 and the aforementioned thermal management module 100, wherein the outlet of the cooling device 30 and the second drain port 12f of the diversion device 10 are both connected to the inlet of the electric drive component 200.

[0098] The electric drive assembly 200 may include an electric drive housing 210, a motor 220, and a reducer 230. Both the motor 220 and the reducer 230 are installed inside the electric drive housing 210. The electric drive housing 210 is provided with a third liquid inlet 210a. The liquid outlet of the cooling device 30 and the second liquid outlet 12f of the diversion device 10 are both connected to the third liquid inlet 210a. The oil entering through the third liquid inlet 210a can be directly delivered to the motor 220 and the reducer 230 to provide them with lubrication and cooling services, ensuring stable operation of the components.

[0099] Since the electric drive assembly 1000 includes the aforementioned thermal management module 100, it naturally possesses all the beneficial effects of the thermal management module 100 and the shunt device 10, which will not be elaborated here.

[0100] The following combination Figure 1 , Figure 2 and Figure 9 The structure shown illustrates the working principle of the electric drive assembly 1000:

[0101] like Figure 2 As shown, after the oil is drawn by the delivery device 20, it flows into the mounting cavity 11a of the housing 11 through the inlet 11b of the diversion device 10. When the oil temperature is lower than the set value, the oil viscosity is high and it is difficult to pass through the filter element 13. The oil pressure in the mounting cavity 11a increases and pushes the control valve 14 to open. The oil is discharged from the second drain port 12f through the second inlet port 12e and the second flow channel 12d. It enters the electric drive housing 210 through the third inlet port 210a and is directly delivered to the motor 220 and the reducer 230. It does not need to be cooled by the cooling device 30, which avoids the viscosity of the low-temperature oil from increasing further and reduces the operating resistance and energy loss of the components.

[0102] like Figure 1As shown, when the oil temperature is higher than the set value, the oil viscosity is lower and it passes smoothly through the filter element 13 into the first flow channel 12a. The oil pressure in the mounting cavity 11a drops, causing the control valve 14 to close. The oil is then transported to the cooling device 30 through the first drain port 12c for cooling, and then enters the electric drive housing 210 through the third inlet port 210a, and is transported to the motor 220 and the reducer 230. This achieves both heat dissipation of the high-temperature oil and interception of impurities by the filter element 13, avoiding component wear, and taking into account both working condition adaptability and operational reliability.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A diversion device, characterized in that, An electric drive assembly (1000) for use in a vehicle, the electric drive assembly (1000) including a fluid delivery device (20), a cooling device (30), and an electric drive component (200); the diversion device (10) includes: The outer casing (11) has a mounting cavity (11a) and a liquid inlet (11b) communicating with the mounting cavity (11a), the liquid inlet (11b) being used to communicate with the liquid outlet of the liquid delivery device (20); The flow guiding assembly (12) is disposed inside the housing (11) and has a first flow channel (12a) and a second flow channel (12d). The first liquid inlet (12b) of the first flow channel (12a) and the second liquid inlet (12e) of the second flow channel (12d) are both connected to the mounting cavity (11a). The first liquid outlet (12c) of the first flow channel (12a) and the second liquid outlet (12f) of the second flow channel (12d) are respectively connected to the liquid inlet of the cooling device (30) and the liquid inlet of the electric drive assembly (200). A filter element (13) is disposed at the first liquid inlet (12b) for filtering the cooling medium; and, The control valve (14) can switch between the open position of opening the second flow channel (12d) and the closed position of closing the second flow channel (12d); The control valve (14) and the filter element (13) are configured such that when the temperature of the cooling medium is lower than a set value, the control valve (14) is in the open position under the action of the cooling medium; when the temperature of the cooling medium is higher than the set value, the cooling medium passes through the filter element (13) and the control valve (14) is in the closed position.

2. The diversion device according to claim 1, characterized in that, The flow guiding component (12) includes: The first fluid guide (121) has the second liquid inlet (12e); The second guide fluid (122) has the second flow channel (12d) and the second drain port (12f); and, The third guide fluid (123) is sleeved outside the second guide fluid (122), has the first liquid inlet (12b), and together with the second guide fluid (122) forms the first liquid outlet (12c) and the first flow channel (12a).

3. The diversion device according to claim 2, characterized in that, The third fluid guide (123) has a plurality of first inlets (12b), which are spaced apart around the extension direction of the second fluid guide (122).

4. The diversion device according to claim 3, characterized in that, The filter element (13) is fitted outside the third guide fluid (123).

5. The diversion device according to claim 4, characterized in that, The third guide fluid (123) also has a first limiting groove (123a), and the first guide fluid (121) has a second limiting groove (121a). Along the axial direction of the filter element (13), the first limiting groove (123a) and the second limiting groove (121a) are arranged opposite to each other, and the two sides of the filter element (13) are respectively located in the first limiting groove (123a) and the second limiting groove (121a). The first guide fluid (121) is detachably connected to the third guide fluid (123).

6. The diversion device according to any one of claims 1-5, characterized in that, The first flow channel (12a) has a circular cross-section.

7. The diversion device according to any one of claims 1-5, characterized in that, The housing (11) also has a connector (11c) communicating with the mounting cavity (11a), through which the flow guide assembly (12) extends into the housing (11) and is sealed to the connector (11c).

8. The diversion device according to any one of claims 1-5, characterized in that, The flow guiding component (12) also has a flow gathering groove (12g) communicating with the mounting cavity (11a), and the first liquid inlet (12b) is opened on the bottom wall of the flow gathering groove (12g).

9. The diversion device according to claim 8, characterized in that, Along the extension direction of the second flow channel (12d), the flow-gathering groove (12g) and the second flow channel (12d) are arranged opposite to each other.

10. The diversion device according to any one of claims 1-5, characterized in that, The control valve (14) includes: The valve core (141) is movably disposed within the second flow channel (12d); and, The reset member (142) acts on the valve core (141) and the flow guide assembly (12), applying a force toward the second inlet (12e) to the valve core (141).

11. A thermal management module, characterized in that, include: The diversion device (10) according to any one of claims 1-10; A liquid delivery device (20), the outlet of which is connected to the inlet (11b) of the diversion device (10); and, Cooling device (30), the inlet of which is connected to the first outlet (12c) of the diversion device (10).

12. An electric drive assembly, characterized in that, include: Electric drive assembly (200); and, In the thermal management module (100) of claim 11, the outlet of the cooling device (30) and the second drain port (12f) of the diversion device (10) are both connected to the inlet of the electric drive assembly (200).

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