Oil suction assembly, lubricating system, electric drive assembly and vehicle

Abstract

The invention provides an oil suction assembly, a lubricating system, an electric drive assembly and a vehicle. The oil suction assembly comprises an oil suction shell, a flow channel is formed in the oil suction shell, the flow channel is provided with an oil outlet, a first oil suction port and a second oil suction port, and the first oil suction port and the second oil suction port are arranged in a spaced mode in the first direction. According to the oil suction assembly, stable oil suction of the oil pump can be guaranteed under the limiting working condition, the lubricating performance of the electric drive assembly is improved, the performance of the whole vehicle can be improved, the service life of key parts is prolonged, and energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of vehicles, and particularly relates to an oil suction assembly, a lubrication system, an electric drive assembly and a vehicle. BACKGROUND

[0002] With the increasing requirements for the power performance, reliability and off-road capability of vehicles such as electric sports cars, electric trucks, electric buses and special vehicles (such as engineering machinery and military vehicles), higher challenges are put forward for the lubrication performance of the electric drive assembly of the vehicle. In the related art, the lubrication system of the electric drive assembly has the problem that when the vehicle is driven in extreme conditions such as high-speed working conditions, large acceleration working conditions and large inclination working conditions, the lubrication performance of the electric drive assembly is reduced, and even the electric drive assembly cannot be effectively lubricated, thereby adversely affecting the vehicle performance, the service life of key components and energy consumption. SUMMARY

[0003] The present disclosure aims to at least partially solve one of the technical problems in the related art.

[0004] To this end, an embodiment of the present disclosure provides an oil suction assembly capable of ensuring stable oil suction of an oil pump in extreme conditions.

[0005] An embodiment of the present disclosure provides a lubrication system.

[0006] An embodiment of the present disclosure provides an electric drive assembly.

[0007] An embodiment of the present disclosure provides a vehicle.

[0008] The oil suction assembly of the embodiment of the present disclosure comprises an oil suction shell, the oil suction shell has a flow channel therein, the flow channel has an oil outlet, a first oil suction port and a second oil suction port, and the first oil suction port and the second oil suction port are arranged apart from each other in a first direction.

[0009] The first oil suction port and the second oil suction port of the oil suction assembly of the present embodiment can be arranged in the front-rear direction of the vehicle. During driving of the vehicle, the position of the oil in the front-rear direction fluctuates in a large range, so that the vehicle can stably suck oil through at least one of the first oil suction port and the second oil suction port in acceleration, deceleration, climbing, descending or other extreme conditions, which is more practical, improves the lubrication performance of the vehicle, improves the service life of key components and reduces energy consumption.

[0010] In some embodiments, the first oil suction port and the second oil suction port are arranged apart from each other in a second direction and / or a third direction, and the first direction, the second direction and the third direction are orthogonal to each other.

[0011] In the embodiment, the second direction can be the up-down direction of the vehicle, and the third direction can be the left-right direction of the vehicle. The first oil suction port and the second oil suction port are arranged to be spaced apart from each other in the second direction, so that the first oil suction port and the second oil suction port are also spaced apart in the height direction, and the electric drive assembly and the horizontal plane often have a certain inclination angle, so that the first oil suction port and the second oil suction port can be matched with the inner bottom wall surface of the shell of the electric drive assembly, and the first oil suction port and the second oil suction port can be closer to the inner bottom wall surface of the shell, and the practicability is better. The first oil suction port and the second oil suction port are arranged to be spaced apart from each other in the third direction, so that the first oil suction port and the second oil suction port are also spaced apart in the left-right direction, and the oil can be sucked when the oil gathers to the left side or the right side.

[0012] In some embodiments, the flow channel includes a first flow channel and a second flow channel, a first end of the second flow channel communicates with the first flow channel, the oil outlet is adjacent to a first end of the first flow channel, the first oil suction port is adjacent to a second end of the first flow channel, and the second oil suction port is adjacent to a second end of the second flow channel.

[0013] The first oil suction port, the second oil suction port and the oil outlet of the embodiment can be arranged at different positions as needed and communicated through the flow channel. Thus, at least one of the first oil suction port and the second oil suction port can suck oil under most working conditions of the vehicle, which is convenient for connecting with components such as an oil pump and has good practicability.

[0014] In some embodiments, a first end of the first flow channel is open to form the oil outlet, the first oil suction port is arranged on a side of the first flow channel, and the second oil suction port is arranged on a side of the second flow channel. The first oil suction port and the second oil suction port of the embodiment are arranged towards the inner bottom wall of the shell of the electric drive assembly, which is convenient for oil suction, and even if the oil level at the corresponding position is very low, the oil can also be smoothly introduced into the oil suction port.

[0015] In some embodiments, the flow area of the first oil suction port is greater than the flow area of the first flow channel, and the flow area of the second oil suction port is greater than the flow area of the second flow channel. By increasing the flow areas of the first oil suction port and the second oil suction port, the embodiment can ensure that the oil sucked into the first flow channel and the second flow channel is sufficient, and avoid that the oil suction port area is too small to cause too large oil suction resistance, which affects the working performance of the oil pump.

[0016] In some embodiments, a second end of the second flow channel is open and closed by a plugging member. The second end of the second flow channel can be used as a process hole during molding, so that the oil suction shell is integrally molded, and the first flow channel and the second flow channel are constructed at the same time as the oil suction shell is molded, which is convenient for processing and manufacturing.

[0017] In some embodiments, an angle between a direction of oil flow in the first flow channel and a direction of oil flow in the second flow channel is greater than 90 degrees. In this way, the turning angle can be avoided to be too large, the smoothness of the oil flow can be improved, and the oil resistance can be reduced.

[0018] In some embodiments, the oil suction assembly further comprises a valve arranged in the flow channel, the valve being configured to control the conduction and cutoff of the oil outlet and at least one of the first oil suction port and the second oil suction port. The valve of the present embodiment can realize the conduction and cutoff of different oil paths by switching different working states, so as to ensure stable oil suction under different working conditions and avoid air suction, so as to ensure that the oil can be stably sucked into the oil pump and improve the lubrication and cooling effect.

[0019] In some embodiments, the valve comprises a first valve and a second valve, the first valve being arranged in the first flow channel and located between the first oil suction port and the intersection position of the second flow channel and the first flow channel, and the second valve being arranged in the second flow channel.

[0020] The first valve and the second valve of the present embodiment can act independently and cooperatively, so as to ensure that the oil pump can stably suck oil.

[0021] In some embodiments, the oil suction shell comprises a first pipe part and a second pipe part formed integrally, an inner cavity of the first pipe part forming the first flow channel, and an inner cavity of the second pipe part forming the second flow channel. The first pipe part and the second pipe part are formed integrally, so as to improve the stability of the whole, reduce the number of components, facilitate installation, and have good practicability.

[0022] In some embodiments, the first oil suction port and the second oil suction port are each provided with a filtering component. The filtering component of the present embodiment can avoid that foreign matters in the electric drive assembly enter the lubrication system through the oil suction port, avoid that the lubrication system is blocked, and avoid that the lubrication system delivers foreign matters to the bearings, gears and other components to cause damage to the components.

[0023] In some embodiments, the oil suction assembly further comprises a wrapping shell connected with the oil suction shell, the wrapping shell having a wrapping groove for wrapping a part of the gear. The present embodiment can separate the gear from the oil outside the wrapping shell, reduce disturbance to the oil, reduce the resistance of the oil to the gear, and reduce the oil stirring loss of the gear.

[0024] In some embodiments, the wrapping shell and the oil suction shell are formed integrally. In this way, the stability of the components can be improved, the wrapping shell and the oil suction shell can be fixed separately, the number of components can be reduced, the processing and manufacturing can be facilitated, and the practicability is good.

[0025] In some embodiments, the bottom wall and / or the side wall of the wrapping shell is provided with a through hole for allowing lubricating oil to flow into the wrapping groove from outside of the wrapping shell.

[0026] The embodiment can prevent the gear from stirring too much oil, and can carry a small amount of oil to improve the lubricating performance of components in the inner cavity of the electric drive assembly, thereby further improving the application effect, and optimizing the output power, the lubricating performance of components, the cooling performance and the like of the entire system.

[0027] In some embodiments, the wrapping shell comprises an arc-shaped bottom plate, a first side plate and a second side plate, the first side plate and the second side plate are connected with the arc-shaped bottom plate and opposite in the width direction of the arc-shaped bottom plate.

[0028] The first side plate, the second side plate and the arc-shaped bottom plate of the embodiment form a wrapping groove which is substantially the same as the outer contour of the lower part of the gear, so that after the gear is arranged in the wrapping groove, the amount of oil in the wrapping groove can be reduced, and the oil stirring loss of the gear can be reduced.

[0029] In some embodiments, the oil suction shell and / or the wrapping shell is provided with a mounting portion and a positioning portion. The mounting portion is used to fix the oil suction assembly to the shell of the electric drive assembly by screws or other fasteners, and the positioning portion is used to position the shell of the electric drive assembly during assembly, so as to facilitate assembly and improve the installation precision and overall stability, avoid excessive stress on the fasteners, and improve the service life and stability of the fasteners.

[0030] The lubricating system of the embodiment of the present disclosure comprises an oil pump and an oil suction assembly as described in any of the above embodiments, and the inlet of the oil pump is connected with the oil outlet of the oil suction assembly.

[0031] The lubricating system of the embodiment can stably suck oil through the oil pump and the oil suction assembly, improve the oil suction effect and efficiency, thereby deliver sufficient oil to components that need to be lubricated or cooled, ensure the working performance of the corresponding components, improve the performance of the vehicle, prolong the service life of the key components, and reduce energy consumption.

[0032] The electric drive assembly of the embodiment of the present disclosure comprises an oil suction assembly as described in any of the above embodiments.

[0033] In the electric drive assembly of the embodiment, the oil suction assembly can stably supply oil in the inner cavity of the electric drive assembly to the oil pump, improve the oil suction effect and efficiency of the oil pump, thereby deliver sufficient oil to components that need to be lubricated or cooled, ensure the working performance of the corresponding components, improve the performance of the vehicle, prolong the service life of the key components, and reduce energy consumption.

[0034] In some embodiments, the electric drive assembly further comprises a housing, and the oil suction assembly is arranged at the bottom of the inner cavity of the housing. In this way, at least one of the first oil suction port and the second oil suction port of the oil suction assembly can stably suck oil.

[0035] In some embodiments, the opening direction of the first oil suction port and the second oil suction port is towards the inner bottom wall surface of the housing, and the first oil suction port has a first oil suction gap with the inner bottom wall surface of the housing, and the second oil suction port has a second oil suction gap with the inner bottom wall surface of the housing.

[0036] The arrangement of the oil suction assembly in the embodiment can minimize the influence of oil position and oil level change on the oil suction port, so that the first oil suction port and the second oil suction port are close to the inner bottom wall surface, air suction can be avoided, the oil pump can stably suck oil through the first oil suction port and the second oil suction port, and the lubrication and cooling performance of the vehicle under extreme working conditions can be improved.

[0037] In some embodiments, the first oil suction gap and the second oil suction gap are 3mm to 5mm. The first oil suction gap and the second oil suction gap in the embodiment can ensure that the oil can flow smoothly into the corresponding flow channel, improve the oil suction effect, and reduce the oil resistance.

[0038] In some embodiments, at least one of the first oil suction port and the second oil suction port is lower than the lubricating oil level in the inner cavity of the housing. In this way, at least one of the first oil suction port and the second oil suction port can also suck oil, and the lubrication and cooling performance can be ensured.

[0039] In some embodiments, the electric drive assembly has multiple working conditions, and under at least part of the working conditions, the lubricating oil level in the inner cavity of the housing is higher than the upper through hole of the wrapping groove and lower than the groove opening of the wrapping groove.

[0040] In the embodiment, the lubricating oil level is higher than the through hole of the wrapping groove, so that the oil can enter the wrapping groove, and the gear can stir a part of the oil to improve the lubrication performance. The lubricating oil level is lower than the groove opening of the wrapping groove, so that the oil can be prevented from filling the wrapping groove, the amount of oil in the wrapping groove is reduced, and the oil stirring loss of the gear is reduced.

[0041] In some embodiments, the electric drive assembly is provided with a gear, and a part of the gear is located in the wrapping groove.

[0042] The wrapping housing in the embodiment can wrap a part of the gear in the wrapping groove, separate the gear from the oil outside the wrapping housing, reduce the disturbance to the oil, reduce the resistance of the oil to the gear, and reduce the oil stirring loss of the gear.

[0043] The vehicle of the embodiment of the present disclosure comprises the oil suction assembly according to any one of the above embodiments, or the lubricating system according to the above, or the electric drive assembly according to any one of the above embodiments.

[0044] In the vehicle of the embodiment, the oil suction assembly can stably supply the oil in the inner cavity of the electric drive assembly to the oil pump, improve the oil suction effect and efficiency of the oil pump, so that the lubricating system can deliver sufficient oil to the components that need to be lubricated or cooled, ensure the working performance of the corresponding components, improve the performance of the whole vehicle, prolong the service life of the key components, and reduce energy consumption.

[0045] In some embodiments, the first direction is the front-rear direction of the vehicle. During driving, the oil fluctuates greatly in the front-rear direction, and the first oil suction port and the second oil suction port of the embodiment are arranged along the front-rear direction of the vehicle, so that stable oil suction can be ensured under vehicle acceleration, deceleration, climbing, descending, or other extreme working conditions, the practicability is better, and the lubrication performance of the whole vehicle is improved.

[0046] In some embodiments, the second oil suction port is located behind the first oil suction port and is higher than the first oil suction port. When the electric drive assembly is arranged obliquely relative to the horizontal plane, the second oil suction port can be matched with the inner bottom wall surface of the shell of the electric drive assembly, so that the first oil suction port and the second oil suction port can be closer to the inner bottom wall surface of the shell, and the practicability is better. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 FIG. 1 is a perspective view of an oil suction assembly according to an embodiment of the present disclosure.

[0048] Figure 2 FIG. 2 is a front view of the oil suction assembly according to the embodiment of the present disclosure.

[0049] Figure 3 FIG. 3 is a sectional view of the oil suction assembly according to the embodiment of the present disclosure.

[0050] Figure 4 FIG. 4 is a side view of the oil suction assembly according to the embodiment of the present disclosure.

[0051] Figure 5 FIG. 5 is a rear view of the oil suction assembly according to the embodiment of the present disclosure.

[0052] Figure 6 FIG. 6 is a perspective view of the oil suction assembly according to the embodiment of the present disclosure from another angle.

[0053] Figure 7 FIG. 7 is a state diagram of an electric drive assembly according to the embodiment of the present disclosure (the vehicle is in a substantially horizontal state).

[0054] Figure 8 FIG. 8 is a state diagram of the electric drive assembly according to the embodiment of the present disclosure (the vehicle is in a large inclination angle state).

[0055] Reference signs: 100, oil suction assembly; 200, electric drive assembly; 1, oil suction shell; 11, flow channel; 111, first flow channel; 112, second flow channel; 12, oil outlet; 13, first oil suction port; 14, second oil suction port; 15, first pipe portion; 16, second pipe portion; 2, filter component; 3, blocking piece; 4, wrapping shell; 41, arc-shaped bottom plate; 42, first side plate; 43, second side plate; 44, wrapping groove; 45, through hole; 51, mounting portion; 52, positioning portion 6, outer shell; 61, inner bottom wall surface; 7, gear; 81, first valve; 82, second valve. DETAILED DESCRIPTION

[0056] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0057] The inventor realizes that, as the industry continuously improves the requirements for the power performance, reliability, and off-road capability of new energy vehicles, the internal thermal management and lubrication thereof are also challenged to a higher level, such as meeting the requirements of high speed, large acceleration, large roll, and large dive in a race track, and the requirements of extreme climbing evaluation by the media or players. In the related art, the scheme can only meet the requirements of regular small-angle climbing and daily driving, and when the climbing angle is greater than 30 degrees, the oil in the electric drive assembly cannot be sucked by the oil pump due to the change in position, the system cannot provide sufficient lubrication and cooling for the reducer bearing and gear, the failure risk is increased, the energy consumption is increased, and the service life and stability of the components are greatly affected.

[0058] Therefore, the present disclosure provides an oil suction assembly, a lubrication system, an electric drive assembly, and a vehicle to effectively improve the lubrication and cooling level of the electric drive assembly under extreme working conditions.

[0059] Referring to Figures 1 to 8 The oil suction assembly 100 of the present disclosure comprises an oil suction shell 1. The oil suction assembly 100 of the present disclosure can be applied to the electric drive assembly of ordinary passenger cars, high-performance electric sports cars, commercial vehicles (such as electric trucks and electric buses), and special vehicles (such as engineering machinery and military vehicles). In addition, the oil suction assembly of the present disclosure can also be applied to complex mechatronic systems with multiple power units or functional modules for independent thermal management and lubrication, such as modular robot drive joints and multiple drive units of large industrial equipment.

[0060] The following is described by way of example as applied in a vehicle, unless the specific working conditions of multiple vehicles are defined and specifically described, the vehicle in the embodiment is in a generally horizontal state, and the up-down direction, front-rear direction and left-right direction in the drawings are the directions when the vehicle is in a generally horizontal state.

[0061] The oil suction shell 1 of the embodiment has a flow channel 11, the flow channel 11 has an oil outlet 12, a first oil suction port 13 and a second oil suction port 14, the first oil suction port 13 and the second oil suction port 14 are arranged apart from each other in a first direction. The oil outlet 12 is usually connected with the inlet of the oil pump, when the oil pump sucks oil, the oil can enter the flow channel 11 through at least one of the first oil suction port 13 and the second oil suction port 14, the first direction of the embodiment can be the generally front-rear direction of the vehicle when the oil suction assembly 100 is arranged on the vehicle, the oil in the electric drive assembly 200 is easy to move in the front-rear direction of the inner cavity of the electric drive assembly 200 during the driving of the vehicle, for example, when the vehicle is accelerating, the oil will gather to the rear of the inner cavity of the electric drive assembly 200, when the vehicle is decelerating, the oil will gather to the front of the inner cavity of the electric drive assembly 200, when the vehicle is in a climbing state, the vehicle body is inclined, then the oil will gather to the rear of the inner cavity of the electric drive assembly 200, when the vehicle is in a downhill state, the oil will gather to the front of the inner cavity of the electric drive assembly 200. Under different working conditions, the position of the oil changes.

[0062] The first oil suction port 13 and the second oil suction port 14 of the embodiment can be arranged along the front-rear direction of the vehicle, thereby ensuring stable oil suction of the vehicle under acceleration, deceleration, climbing, downhill or other extreme working conditions, and better practicability. Under the working conditions of high speed / racing track, large acceleration / racing track, large inclination / racing track, large diving / racing track, and extreme climbing test (when the slope is about 45 degrees), the oil suction assembly 100 of the embodiment can also ensure stable oil suction of the oil pump, improve the lubrication performance of the electric drive assembly 200, help to improve the performance of the whole vehicle, improve the service life of the key components, and reduce energy consumption.

[0063] In some embodiments, the first oil suction port 13 and the second oil suction port 14 are arranged to be spaced apart from each other in the second direction and / or the third direction, and the first direction, the second direction and the third direction are orthogonal to each other. The second direction can be the up-down direction of the vehicle, and the third direction can be the left-right direction of the vehicle. The first oil suction port 13 and the second oil suction port 14 are arranged to be spaced apart from each other in the second direction, so that the first oil suction port 13 and the second oil suction port 14 are also spaced apart in the height direction. When the vehicle body is in a generally horizontal state, the electric drive assembly 200 often has a certain inclination angle with the horizontal plane. The first oil suction port 13 and the second oil suction port 14 of the present embodiment have a certain height difference in the height direction, so as to be matched with the inner bottom wall surface 61 of the shell 6 of the electric drive assembly 200, so as to ensure that the first oil suction port 13 and the second oil suction port 14 can be closer to the inner bottom wall surface 61 of the shell 6, and the practicability is better.

[0064] The first oil suction port 13 and the second oil suction port 14 are arranged to be spaced apart from each other in the third direction, so that the first oil suction port 13 and the second oil suction port 14 are also spaced apart in the left-right direction. When the vehicle is inclined to the left, the oil is easy to gather to the left side. When the vehicle is inclined to the right, the oil is easy to gather to the right side. The first oil suction port 13 and the second oil suction port 14 of the present embodiment are arranged to be spaced apart from each other in the left-right direction, so as to ensure that the oil can be sucked when the vehicle is inclined to the left or the right by about 30 degrees.

[0065] Since the angle of the vehicle inclined to the left and the right is generally not too large (too large is easy to roll over), when the vehicle is inclined to the left or the right by an angle less than or equal to 30 degrees and does not affect the oil suction of the oil suction port, the positions of the first oil suction port 13 and the second oil suction port 14 in the left-right direction can be generally the same.

[0066] Referring to Figure 3 In some embodiments, the flow channel 11 includes a first flow channel 111 and a second flow channel 112, the first end of the second flow channel 112 communicates with the first flow channel 111, the oil outlet 12 is adjacent to the first end of the first flow channel 111, the first oil suction port 13 is adjacent to the second end of the first flow channel 111, and the second oil suction port 14 is adjacent to the second end of the second flow channel 112. The first oil suction port 13 and the oil outlet 12 are connected and communicated through the first flow channel 111, and the first oil suction port 13 can be guided to the first position at the bottom of the inner cavity of the shell 6 of the electric drive assembly 200 through the first flow channel 111. The first flow channel 111 and the second flow channel 112 are connected and communicated, so that the second oil suction port 14 can be guided to the second position at the bottom of the inner cavity of the shell 6 of the electric drive assembly 200 through the second flow channel 112. The first oil suction port 13, the second oil suction port 14 and the oil outlet 12 of the present embodiment can be arranged at different positions as needed and connected and communicated through the flow channel 11, so as to ensure that at least one of the first oil suction port 13 and the second oil suction port 14 can suck oil under most working conditions of the vehicle.

[0067] Referring to Figure 3 In some embodiments, the first end of the first flow channel 111 is open to form the oil outlet 12, the first oil suction port 13 is arranged on the side of the first flow channel 111, and the second oil suction port 14 is arranged on the side of the second flow channel 112. It can be understood that the opening direction of the oil outlet 12 is substantially parallel to the axial direction of the first flow channel 111, and the opening direction of the first oil suction port 13 is at an angle, for example, substantially orthogonal, to the axial direction of the first flow channel 111, so as to facilitate the arrangement of the first oil suction port 13 towards the inner bottom wall of the shell 6 of the electric drive assembly 200. Similarly, the opening direction of the second oil suction port 14 is at an angle, for example, substantially orthogonal, to the axial direction of the second flow channel 112, so as to facilitate the arrangement of the second oil suction port 14 towards the inner bottom wall of the shell 6 of the electric drive assembly 200, and facilitate oil suction, so as to ensure that the oil can smoothly enter the oil suction port even if the oil level at the corresponding position is low.

[0068] Referring to Figure 3 Further, the flow area of the first oil suction port 13 is greater than the flow area of the first flow channel 111, and the flow area of the second oil suction port 14 is greater than the flow area of the second flow channel 112. By increasing the flow area of the first oil suction port 13 and the second oil suction port 14, it can be ensured that the oil suctioned into the first flow channel 111 and the second flow channel 112 is sufficient, and the oil suction resistance is not too large due to the small area of the oil suction port, which affects the working performance of the oil pump. Especially when the oil suction port is close to the inner bottom wall of the shell 6 of the electric drive assembly 200, increasing the flow area of the oil suction port can reduce the oil suction resistance and ensure smooth oil suction.

[0069] Referring to Figure 3 In some embodiments, the second end of the second flow channel 112 is open and closed by the plugging member 3. The second end of the second flow channel 112 can be a process hole during molding, so as to facilitate the integral molding of the oil suction shell 1, and to construct the first flow channel 111 and the second flow channel 112 at the same time when the oil suction shell 1 is molded, facilitating processing and manufacturing. The plugging member 3 can be a plug, which is connected in the process hole by threads to close the second end.

[0070] Referring to Figure 3In some embodiments, the angle between the oil flow direction in the first flow channel 111 and the oil flow direction in the second flow channel 112 is greater than 90 degrees. When designing the flow channel 11, the oil flow direction in the first flow channel 111 and the oil flow direction in the second flow channel 112 are both along a substantially straight line or a relatively smooth arc, however, when the oil flowing into the second flow channel 112 from the second oil suction port 14 flows into the first flow channel 111, if the turning angle is too large, it will cause too large oil resistance, affecting the oil suction efficiency. Therefore, the angle between the oil flow direction in the first flow channel 111 and the oil flow direction in the second flow channel 112 can be 91 degrees, 98 degrees, 100 degrees, 105 degrees, 130 degrees, 150 degrees, 170 degrees, etc., to improve the smoothness of the oil flow and reduce the oil resistance.

[0071] Referring to Figure 3 In some embodiments, the oil suction assembly 100 further comprises a valve arranged in the flow channel 11, the valve being used to control the conduction and cutoff of the oil outlet port 12 and at least one of the first oil suction port 13 and the second oil suction port 14. The first oil suction port 13 and the second oil suction port 14 each have multiple modes and at least include the following three modes, mode one: the oil outlet port 12 and the first oil suction port 13 are conducted, and the oil outlet port 12 and the second oil suction port 14 are cut off; mode two: the oil outlet port 12 and the first oil suction port 13 are cut off, and the oil outlet port 12 and the second oil suction port 14 are conducted; mode three: the oil outlet port 12 is conducted with the first oil suction port 13 and the second oil suction port 14. The valve of the present embodiment can realize the switching of the above-mentioned modes by switching different working states, thereby realizing stable oil suction under different working conditions and avoiding air suction, ensuring that the oil can be stably sucked into the oil pump, and improving the lubrication and cooling effect.

[0072] Further, the valve comprises a first valve 81 and a second valve 82, the first valve 81 is arranged in the first flow channel 111, and the first valve 81 is located between the first oil suction port 13 and the intersection position of the second flow channel 112 and the first flow channel 111, and the second valve 82 is arranged in the second flow channel 112.

[0073] The first valve 81 and the second valve 82 of the present embodiment can act independently, and can work cooperatively between them to ensure that the oil pump can stably suck oil. At least one of the first valve 81 and the second valve 82 is opened, thereby ensuring that the oil pump can suck oil through at least one oil suction port, ensuring that the lubrication system operates stably and normally.

[0074] Referring to Figure 1 and Figure 3In some embodiments, the oil suction shell 1 comprises a first pipe portion 15 and a second pipe portion 16 which are integrally formed, the inner cavity of the first pipe portion 15 forms the first flow channel 111, and the inner cavity of the second pipe portion 16 forms the second flow channel 112. The first pipe portion 15 and the second pipe portion 16 can be straight pipes or arc-shaped bent pipes, the first pipe portion 15 and the second pipe portion 16 are connected and communicate the first flow channel 111 and the second flow channel 112, the first pipe portion 15 and the second pipe portion 16 are integrally formed, which improves the stability of the whole, reduces the number of components, facilitates installation, and has good practicability.

[0075] Referring to Figures 1 to 4 In some embodiments, the first oil suction port 13 and the second oil suction port 14 are both provided with a filter component 2. The filter component 2 can be a filter screen. By providing the filter component 2, foreign matters in the electric drive assembly 200 can be prevented from entering the lubrication system through the oil suction ports, the lubrication system can be prevented from being blocked, and the lubrication system can be prevented from delivering foreign matters to the bearings, the gear 7 and other components to cause damage to the components.

[0076] Referring to Figures 1 to 6 In some embodiments, the oil suction assembly 100 further comprises a wrapping shell 4 which is connected with the oil suction shell 1 and has a wrapping groove 44 for wrapping a part of the gear 7. Since the rotation of the gear 7 in the electric drive assembly 200 can stir the oil, the energy consumption and the resistance of the gear 7 during rotation are high, which affects the overall performance of the electric drive assembly 200. The wrapping shell 4 in the present embodiment can wrap a part of the gear 7 (specifically, the lower half of the gear 7) in the wrapping groove 44, separate the gear 7 from the oil outside the wrapping shell 4, reduce the disturbance to the oil, reduce the resistance of the oil to the gear 7, and reduce the oil stirring loss of the gear 7.

[0077] Further, the wrapping shell 4 is integrally formed with the oil suction shell 1. In this way, the stability of the components can be improved, the wrapping shell 4 and the oil suction shell 1 can be fixed separately, the number of components is reduced, the processing and manufacturing are facilitated, and the practicability is good.

[0078] Further, the bottom wall and / or the side wall of the wrapping shell 4 is / are provided with a through hole 45 for allowing the lubricating oil to flow from outside the wrapping shell 4 into the wrapping groove 44. In the present embodiment, the through hole 45 is provided in the bottom wall of the wrapping shell 4. The through hole 45 can allow the oil outside the wrapping shell 4 to flow into the wrapping groove 44, and when the gear 7 rotates, the gear 7 can stir a part of the oil, so that the oil is sprayed to the circumferential components, and the lubrication effect of the circumferential components of the gear 7 is improved. The present embodiment can prevent the gear 7 from stirring too much oil, and at the same time, can carry a small amount of oil to improve the lubrication performance of the components in the inner cavity of the electric drive assembly 200, the application effect is further improved, and the entire system is optimized in terms of output power, component lubrication performance, cooling performance and the like.

[0079] Referring toFigure 6 In some embodiments, the wrapping shell 4 comprises an arc-shaped bottom plate 41, a first side plate 42 and a second side plate 43, the first side plate 42 and the second side plate 43 are connected with the arc-shaped bottom plate 41 and opposite to each other in the width direction of the arc-shaped bottom plate 41. The width direction of the arc-shaped bottom plate 41 can be the generally left-right direction shown in the figure. The arc-shaped bottom plate 41 is arranged generally coaxially with the gear 7, and the inner wall surface of the arc-shaped bottom plate 41 is adjacent to the outer periphery of the gear 7. The first side plate 42, the second side plate 43 and the arc-shaped bottom plate 41 form a wrapping groove 44 which is generally the same as the outer contour of the lower part of the gear 7, so that after the gear 7 is arranged in the wrapping groove 44, the amount of oil in the wrapping groove 44 can be reduced, and the oil stirring loss of the gear 7 can be reduced.

[0080] Referring to Figures 4-6 In some embodiments, the oil suction shell 1 and / or the wrapping shell 4 are provided with a mounting portion 51 and a positioning portion 52. The mounting portion 51 can be a mounting hole for fixing the oil suction assembly 100 to the housing 6 of the electric drive assembly 200 by a fastener such as a screw, and the positioning portion 52 can be a positioning pin or a positioning hole for positioning the electric drive assembly 200 during assembly, facilitating assembly and improving installation accuracy and overall stability, avoiding excessive stress on the fastener, and improving the service life and stability of the fastener.

[0081] The lubricating system of the embodiments of the present disclosure comprises an oil pump and the oil suction assembly 100 of any one of the above embodiments, and the inlet of the oil pump is connected with the oil outlet 12 of the oil suction assembly 100. The lubricating system of the present embodiment can stabilize oil suction by the oil pump and the oil suction assembly 100, improve the oil suction effect and efficiency, thereby delivering sufficient oil to the parts that need to be lubricated or cooled, ensuring the working performance of the corresponding parts, improving the performance of the vehicle, prolonging the service life of the key parts, and reducing energy consumption.

[0082] Referring to Figures 1 to 8 The electric drive assembly 200 of the embodiments of the present disclosure comprises the oil suction assembly 100 of any one of the above embodiments. In the electric drive assembly 200 of the present embodiment, the oil suction assembly 100 can stably supply the oil in the inner cavity of the electric drive assembly 200 to the oil pump, improve the oil suction effect and efficiency of the oil pump, thereby delivering sufficient oil to the parts that need to be lubricated or cooled, ensuring the working performance of the corresponding parts, improving the performance of the vehicle, prolonging the service life of the key parts, and reducing energy consumption.

[0083] In some embodiments, the electric drive assembly 200 further comprises a housing 6, and the oil suction assembly 100 is arranged at the bottom of the inner cavity of the housing 6. Since the oil liquid will eventually gather towards the bottom of the inner cavity of the housing 6 under the action of gravity, the oil suction assembly 100 is arranged at the bottom of the inner cavity of the housing 6. When the vehicle is in a substantially horizontal state, if the housing 6 is arranged to be inclined relative to the horizontal plane, the oil suction assembly 100 is located at the low end of the inner cavity of the housing 6, that is, the position where the oil liquid actively gathers under the action of gravity. Thus, at least one of the first oil suction port 13 and the second oil suction port 14 of the oil suction assembly 100 can stably suck oil.

[0084] In some embodiments, the opening directions of the first oil suction port 13 and the second oil suction port 14 are both towards the inner bottom wall surface 61 of the housing 6, and the first oil suction port 13 has a first oil suction gap with the inner bottom wall surface 61 of the housing 6, and the second oil suction port 14 has a second oil suction gap with the inner bottom wall surface 61 of the housing 6. In this way, the influence of the position and level of the oil liquid on the oil suction port can be minimized, so that the first oil suction port 13 and the second oil suction port 14 are both close to the inner bottom wall surface 61, air suction can be avoided, and the oil pump can stably suck oil through the first oil suction port 13 and the second oil suction port 14, thereby improving the lubrication and cooling performance of the vehicle under extreme working conditions.

[0085] Further, the first oil suction gap and the second oil suction gap are 3mm to 5mm. The first oil suction gap and the second oil suction gap can be 3mm, 3.3mm, 3.5mm, 3.9mm, 4mm, 4.5mm or 5mm. When the oil suction gap is too small and less than 3mm, the oil suction resistance will be too large, and the first oil suction port 13 and the second oil suction port 14 need a larger flow area, which is not conducive to the installation and miniaturization of the oil suction assembly 100. When the oil suction gap is too large and greater than 5mm, it will occupy too much space between the gear 7 and the inner bottom wall surface 61 of the housing 6, which will cause the size of the oil suction assembly 100 in the substantially vertical direction to be too large, which is not conducive to the assembly of the wrapping groove 44 and the gear 7, and affects the overall structure of the oil suction assembly 100.

[0086] The first oil suction gap and the second oil suction gap of the present embodiment can ensure that the oil liquid can flow smoothly into the corresponding flow channel 11, thereby improving the oil suction effect and reducing the oil resistance.

[0087] In some embodiments, at least one of the first oil suction port 13 and the second oil suction port 14 is lower than the lubricating oil liquid level in the inner cavity of the housing 6. When the vehicle is in a substantially horizontal state, at least one of the first oil suction port 13 and the second oil suction port 14 is lower than the lubricating oil liquid level in the inner cavity of the housing 6.

[0088] In the normal working condition of the vehicle, at least one of the first oil suction port 13 and the second oil suction port 14 can also suck oil, thereby ensuring the lubrication and cooling performance. The normal working condition of the vehicle in the embodiment includes vehicle acceleration, deceleration, climbing, descending, or other extreme working conditions. The normal working condition of the vehicle generally does not include abnormal working conditions such as stunt performance (for example, air flip), outdoor challenge on a slope of more than 70 degrees, and the like. Of course, in some abnormal working conditions, at least one of the first oil suction port 13 and the second oil suction port 14 of the vehicle provided with the oil suction assembly 100 in the embodiment can also suck oil.

[0089] In some embodiments, the electric drive assembly 200 has multiple working conditions, and in at least some of the working conditions, the oil liquid level in the inner cavity of the shell 6 is higher than the through hole 45 of the wrapping groove 44 and lower than the groove of the wrapping groove 44.

[0090] The position and depth of the oil liquid in the inner cavity of the shell 6 can change due to whether the vehicle is started, the speed of travel after starting, the size of acceleration, the angle of body inclination, and the like. For example, when the vehicle is not started, the oil liquid flows back into the inner cavity of the shell 6, and at this time, the oil liquid level is high. For another example, when the vehicle is running at a high speed, the lubrication system extracts more oil liquid, and the oil liquid level is low.

[0091] The multiple working conditions of the embodiment can include most of the driving states in the generally uniform speed driving, the acceleration driving, and the deceleration driving on the road with a slope of less than 45 degrees in the front-rear direction and a slope of less than 30 degrees in the left-right direction.

[0092] When the lubricating oil liquid level is higher than the through hole 45 of the wrapping groove 44, the oil liquid can enter the wrapping groove 44, and the gear 7 can stir a part of the oil liquid to improve the lubrication performance. When the lubricating oil liquid level is lower than the groove of the wrapping groove 44, the oil liquid can be prevented from filling the wrapping groove 44, the amount of oil liquid in the wrapping groove 44 can be reduced, and the oil stirring loss of the gear 7 can be reduced.

[0093] In some embodiments, the electric drive assembly 200 is provided with the gear 7, and a part of the gear 7 is located in the wrapping groove 44. The gear 7 can be the gear 7 adjacent to the oil liquid gathering position in the inner cavity of the shell 6, for example, the large gear 7 on the output shaft. The wrapping shell 4 in the embodiment can wrap a part of the gear 7 (specifically, the lower half of the gear 7) in the wrapping groove 44, separate the gear 7 from the oil liquid outside the wrapping shell 4, reduce the disturbance to the oil liquid, reduce the resistance of the oil liquid to the gear 7, and reduce the oil stirring loss of the gear 7.

[0094] The vehicle of the embodiment of the present disclosure comprises the oil suction assembly 100 of any one of the above embodiments, or the lubricating system described above, or the electric drive assembly 200 of any one of the above embodiments. In the vehicle of the embodiment, the oil suction assembly 100 can stably supply the oil in the inner cavity of the electric drive assembly 200 to the oil pump, improve the oil suction effect and efficiency of the oil pump, so that the lubricating system can deliver sufficient oil to the components that need to be lubricated or cooled, ensure the working performance of the corresponding components, improve the performance of the whole vehicle, prolong the service life of the key components, and reduce energy consumption.

[0095] In some embodiments, the first direction is the front-rear direction of the vehicle. During driving, the oil fluctuates greatly in the front-rear direction. The first oil suction port 13 and the second oil suction port 14 are arranged along the front-rear direction of the vehicle, so that stable oil suction can be ensured during vehicle acceleration, deceleration, climbing, descending, or other extreme working conditions, and the practicability is better, and the lubrication performance of the whole vehicle is improved.

[0096] In some embodiments, the second oil suction port 14 is located behind and higher than the first oil suction port 13. The first oil suction port 13 and the second oil suction port 14 are not only spaced apart in the front-rear direction, but also spaced apart in the height direction. When the electric drive assembly 200 is arranged obliquely relative to the horizontal plane, the first oil suction port 13 and the second oil suction port 14 can be matched with the inner bottom wall surface 61 of the shell 6 of the electric drive assembly 200, so that the first oil suction port 13 and the second oil suction port 14 can be closer to the inner bottom wall surface 61 of the shell 6, and the practicability is better.

[0097] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0098] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0099] In the present disclosure, unless specifically defined otherwise, the terms "mount", "connected", "connecting", "fixed", and the like, should be construed broadly and can be understood as, for example, fixedly connected, or detachably connected, or integrated; can be mechanically connected, or electrically connected, or communicatively connected; can be directly connected, or indirectly connected via an intermediate medium; can be an internal connection between two elements, or an interaction relationship between two elements, unless specifically defined otherwise. The specific meanings of the above terms in the present disclosure can be understood by those of ordinary skill in the art according to the specific circumstances.

[0100] In the present disclosure, unless specifically defined otherwise, a first feature "on" or "under" a second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate medium. Moreover, the first feature "above", "over", and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below", and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal height than the second feature.

[0101] In the present disclosure, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those of ordinary skill in the art without contradiction.

[0102] Although the embodiments of the present disclosure have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and those of ordinary skill in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present disclosure.

Claims

1. An oil-absorbing assembly (100), characterized in that, include: An oil-absorbing shell (1) has a flow channel (11) inside. The flow channel (11) has an oil outlet (12), a first oil suction port (13), and a second oil suction port (14). The first oil suction port (13) and the second oil suction port (14) are arranged spaced apart from each other in a first direction.

2. The oil-absorbing assembly (100) according to claim 1, characterized in that, The first oil suction port (13) and the second oil suction port (14) are spaced apart from each other in the second direction and / or the third direction, and the first direction, the second direction and the third direction are orthogonal to each other.

3. The oil-absorbing assembly (100) according to claim 1, characterized in that, The flow channel (11) includes a first flow channel (111) and a second flow channel (112). The first end of the second flow channel (112) is connected to the first flow channel (111). The oil outlet (12) is adjacent to the first end of the first flow channel (111). The first oil suction port (13) is adjacent to the second end of the first flow channel (111). The second oil suction port (14) is adjacent to the second end of the second flow channel (112).

4. The oil-absorbing assembly (100) according to claim 3, characterized in that, The first end of the first flow channel (111) is open to form the oil outlet (12), the first oil suction port (13) is located on the side of the first flow channel (111), and the second oil suction port (14) is located on the side of the second flow channel (112).

5. The oil-absorbing assembly (100) according to claim 3, characterized in that, The flow area of ​​the first oil suction port (13) is greater than the flow area of ​​the first flow channel (111), and the flow area of ​​the second oil suction port (14) is greater than the flow area of ​​the second flow channel (112).

6. The oil-absorbing assembly (100) according to claim 3, characterized in that, The second end of the second flow channel (112) is open and closed by the plug (3).

7. The oil-absorbing assembly (100) according to claim 3, characterized in that, The angle between the oil flow direction in the first flow channel (111) and the oil flow direction in the second flow channel (112) is greater than 90 degrees.

8. The oil-absorbing assembly (100) according to claim 3, characterized in that, The oil suction assembly (100) also includes a valve located in the flow channel (11) and is used to control the opening and closing of the oil outlet (12) and at least one of the first oil suction port (13) and the second oil suction port (14).

9. The oil-absorbing assembly (100) according to claim 8, characterized in that, The valve includes a first valve (81) and a second valve (82). The first valve (81) is located in the first flow channel (111) and is located between the first oil suction port (13) and the intersection of the second flow channel (112) and the first flow channel (111). The second valve (82) is located in the second flow channel (112).

10. The oil-absorbing assembly (100) according to claim 3, characterized in that, The oil-absorbing shell (1) includes an integrally formed first tube (15) and second tube (16), the inner cavity of the first tube (15) forms a first flow channel (111), and the inner cavity of the second tube (16) forms a second flow channel (112).

11. The oil-absorbing assembly (100) according to claim 1, characterized in that, Both the first oil suction port (13) and the second oil suction port (14) are equipped with filter components (2).

12. The oil-absorbing assembly (100) according to any one of claims 1 to 11, characterized in that, The oil-absorbing assembly (100) also includes a wrapping shell (4), which is connected to the oil-absorbing shell (1), and the wrapping shell (4) has a wrapping groove (44) for wrapping a portion of the gear (7).

13. The oil-absorbing assembly (100) according to claim 12, characterized in that, The encapsulation shell (4) is integrally formed with the oil-absorbing shell (1).

14. The oil-absorbing assembly (100) according to claim 12, characterized in that, The bottom wall and / or side wall of the packaging shell (4) are provided with through holes (45) for lubricating oil to flow from the outside of the packaging shell (4) into the packaging groove (44).

15. The oil-absorbing assembly (100) according to claim 12, characterized in that, The enclosure (4) includes an arc-shaped bottom plate (41), a first side plate (42), and a second side plate (43), wherein the first side plate (42) and the second side plate (43) are connected to the arc-shaped bottom plate (41) and are opposite to each other in the width direction of the arc-shaped bottom plate (41).

16. The oil-absorbing assembly (100) according to claim 12, characterized in that, The oil-absorbing shell (1) and / or the package are provided with an installation part (51) and a positioning part (52).

17. A lubrication system, characterized in that, It includes an oil pump and an oil suction assembly (100) as described in any one of claims 1 to 16, wherein the inlet of the oil pump is connected to the oil outlet (12) of the oil suction assembly (100).

18. An electric drive assembly (200), characterized in that, Includes the oil-absorbing component (100) as described in any one of claims 1 to 16.

19. The electric drive assembly (200) according to claim 18, characterized in that, The electric drive assembly (200) also includes a housing (6), and the oil suction assembly (100) is located at the bottom of the inner cavity of the housing (6).

20. The electric drive assembly (200) according to claim 19, characterized in that, The opening directions of the first oil suction port (13) and the second oil suction port (14) are both facing the inner bottom wall surface (61) of the outer shell (6). There is a first oil suction gap between the first oil suction port (13) and the inner bottom wall surface (61) of the outer shell (6), and there is a second oil suction gap between the second oil suction port (14) and the inner bottom wall surface (61) of the outer shell (6).

21. The electric drive assembly (200) according to claim 20, characterized in that, The first oil suction gap and the second oil suction gap are 3mm to 5mm.

22. The electric drive assembly (200) according to claim 19, characterized in that, At least one of the first oil suction port (13) and the second oil suction port (14) is lower than the lubricating oil level in the inner cavity of the housing (6).

23. The electric drive assembly (200) according to claim 19, characterized in that, The electric drive assembly (200) has multiple operating conditions. At least in some operating conditions, the lubricating oil level in the inner cavity of the housing (6) is higher than the through hole (45) on the wrapping groove (44) of the oil suction assembly and lower than the opening of the wrapping groove (44).

24. The electric drive assembly (200) according to any one of claims 18 to 23, characterized in that, The electric drive assembly (200) is provided with a gear (7), a portion of which is located in the encapsulation groove (44) of the oil suction assembly.

25. A vehicle, characterized in that, It includes the oil suction assembly (100) as claimed in any one of claims 1 to 16, or the lubrication system as claimed in claim 17, or the electric drive assembly (200) as claimed in any one of claims 18 to 24.

26. The vehicle according to claim 25, characterized in that, The first direction is the forward and backward direction of the vehicle.

27. The vehicle according to claim 26, characterized in that, The second oil suction port (14) is located behind and above the first oil suction port (13).

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