Speed reducer assembly, motor speed reducer assembly, carrier and control method

Abstract

The invention relates to the technical field of vehicles, and discloses a speed reducer assembly, a motor speed reducer assembly, a carrier and a control method, and the speed reducer assembly comprises a speed reducer and an oil outlet baffle. The opening height of the oil outlet can be changed by rotating the oil outlet baffle with the opening, if the liquid level of lubricating oil in the speed reducer is higher than the opening height of the oil outlet, the lubricating oil in the speed reducer flows out of the oil outlet, and then the liquid level of the lubricating oil in the speed reducer is changed. When a vehicle is in a medium-low-speed running working condition, the oil outlet baffle is rotated to enable the oil outlet to be kept at the first opening height position, lubricating oil in the cavity of the speed reducer is in a high liquid level state, it is ensured that the splashing lubricating effect generated by gear oil stirring is good, and the lubricating and heat dissipation requirements are met. When a vehicle is in a high-speed running working condition, the oil outlet baffle is rotated to keep the oil outlet at the second opening height position, so that lubricating oil in the cavity of the speed reducer is in a low-liquid-level state, oil stirring power loss of the speed reducer can be reduced, the requirements for lubrication and heat dissipation can be met, and the transmission efficiency of the speed reducer is improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a reducer assembly, a motor reducer component, a carrier, and a control method. Background Art

[0002] With the continuous development of new energy vehicles, electric drive systems are becoming increasingly integrated. The reducers integrated into these systems generate heat during operation. To ensure reliable operation of the transmission system, oil cooling is typically used. This involves injecting a certain amount of lubricant into the reducer cavity. The lubricant enters the reducer cavity and splashes through the high-speed rotating gear pairs, lubricating the transmission components and dissipating heat generated in key areas.

[0003] To ensure effective splash lubrication from gear oil churning, a large amount of lubricant must be added to the reducer cavity, increasing the gear oil immersion depth to meet the reducer's lubrication needs during low and medium speed driving. However, while the amount of lubricant in the cavity is fixed, at high speeds, the gear oil immersion depth increases, significantly increasing the reducer's oil churning power loss and, in turn, leading to higher energy consumption in the electric drive system. Summary of the Invention

[0004] The present invention provides a reducer assembly, a motor reducer assembly, a vehicle, and a control method to solve or improve the problems in related technologies of large oil stirring power loss and high energy consumption of the electric drive system when the vehicle is driving at high speed.

[0005] In a first aspect, the present invention provides a reducer assembly, comprising:

[0006] A reducer having a reducer cavity, wherein the reducer cavity includes a bottom wall, a top wall, and a side wall disposed between the top wall and the bottom wall, wherein the side wall is provided with an oil outlet;

[0007] An oil outlet baffle covers the oil outlet and is rotatable. The oil outlet baffle is provided with an opening, and the opening is offset from the rotation center of the oil outlet baffle.

[0008] In an optional embodiment, the method further includes:

[0009] A filling piece is rotatably disposed in the reducer cavity, and the filling piece rotates in a direction away from the bottom wall or in a direction close to the bottom wall, so that the distance between the bottom of the filling piece and the bottom wall is adjustable.

[0010] In an optional embodiment, the method further includes:

[0011] A driving assembly is used to drive the filling piece to rotate or the oil outlet baffle to rotate, and the filling piece and the oil outlet baffle are arranged in a linkage manner. When the filling piece rotates in a direction away from the bottom wall, the opening rotates in a direction close to the bottom wall; when the filling piece rotates in a direction close to the bottom wall, the opening rotates in a direction away from the bottom wall.

[0012] In an optional embodiment, the drive assembly includes:

[0013] a first arc-shaped rack, provided on the filling member, the first arc-shaped rack being used to drive the filling member to rotate, and the filling member being used to drive the oil outlet baffle to rotate;

[0014] a first gear meshing with the first arc-shaped rack;

[0015] A driving member, the output end of which is transmission-connected to the first gear, and the driving member is used to drive the first gear to rotate, so as to drive the filling member to rotate through the first arc-shaped rack.

[0016] In an optional embodiment, the method further includes:

[0017] a second arc-shaped rack provided on the filling piece, so that when the first arc-shaped rack drives the filling piece to rotate, the filling piece can drive the second arc-shaped rack to rotate;

[0018] The second gear is meshed with the second arc-shaped rack, and the second gear is coaxially arranged with the oil outlet baffle and rotates synchronously.

[0019] In an optional embodiment, the method further includes:

[0020] A matching guide member and an arc-shaped slide rail, wherein the guide member is slidably connected to the arc-shaped slide rail and the guide member slides along the arc-shaped slide rail;

[0021] The reducer includes a reducer housing having the reducer cavity. One of the reducer housing and the filling piece is provided with the guide piece, and the other is provided with the arc-shaped slide rail.

[0022] In an optional embodiment, the reducer includes:

[0023] At least one transmission gear is arranged in the reducer cavity, and the filling piece is provided with an arc-shaped tooth surface arranged along the circumference of the transmission gear. An oil guide space is formed between the arc-shaped tooth surface and the transmission gear for splashing lubricating oil along the direction from the bottom to the top of the transmission gear.

[0024] In a second aspect, the present invention further provides a motor reducer assembly, comprising:

[0025] A motor assembly having a motor cavity;

[0026] A reducer assembly is transmission-connected to the output end of the motor assembly. The reducer assembly is a reducer assembly as described in any one of the above items, and the motor cavity is communicated with the reducer cavity through the oil outlet.

[0027] In a third aspect, the present invention further provides a vehicle comprising the motor reducer assembly as described above.

[0028] In a fourth aspect, the present invention further provides a control method for a reducer assembly as described in any one of the above items, comprising:

[0029] Obtain the real-time driving conditions of the vehicle;

[0030] The rotational positions of the oil outlet baffle and the filling member are controlled according to the real-time driving road conditions.

[0031] In an optional embodiment, the driving road condition includes an expressway condition and a highway condition, and the control method of the reducer assembly further includes:

[0032] When the real-time driving road condition is the expressway condition or the highway condition, obtaining the real-time operating temperature of the reducer;

[0033] The rotational positions of the oil outlet baffle and the filling member are adjusted according to the real-time operating temperature.

[0034] In an optional embodiment, the method further includes:

[0035] When the real-time operating temperature is greater than or equal to a preset temperature, the filling piece is controlled to rotate toward the bottom wall, and the opening is controlled to rotate toward the bottom wall.

[0036] In an optional embodiment, the method further includes:

[0037] When the real-time operating temperature is lower than the preset temperature, obtaining the real-time speed of the vehicle;

[0038] The rotational positions of the oil outlet baffle and the filling member are adjusted according to the real-time vehicle speed.

[0039] The reducer assembly provided by the present invention changes the relative position of the opening and the oil outlet by rotating the oil outlet baffle with an opening, thereby changing the opening height of the oil outlet. If the lubricating oil level in the reducer is higher than the oil outlet opening height, the lubricating oil in the reducer will flow out of the oil outlet and be discharged to the outside, thereby changing the liquid level of the lubricating oil in the reducer cavity. In this way, when the vehicle is in a medium or low speed driving condition, the oil outlet is kept at the first opening height position by rotating the oil outlet baffle, so that the lubricating oil in the reducer cavity is in a high liquid level state, ensuring that the splash lubrication effect generated by the gear stirring oil is good, and meeting the lubrication and heat dissipation requirements. When the vehicle is in a high-speed driving condition, the oil outlet is kept at the second opening height position by rotating the oil outlet baffle, so that the lubricating oil in the reducer cavity is in a low liquid level state, which can minimize the power loss of the reducer stirring oil, meet the lubrication and heat dissipation requirements, and improve the transmission efficiency of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 This is one of the front views of the reducer assembly according to an embodiment of the present invention;

[0042] Figure 2 This is the second front view of the reducer assembly according to an embodiment of the present invention;

[0043] Figure 3 This is a partially enlarged schematic diagram of a filling piece according to an embodiment of the present invention;

[0044] Figure 4 This is a front view of the embodiment of the present invention when the lubricating oil in the reducer cavity is at a first liquid level;

[0045] Figure 5 This is the second front view of the reducer cavity when the lubricating oil is at a first liquid level according to the embodiment of the present invention;

[0046] Figure 6 This is a front view of the embodiment of the present invention when the lubricating oil in the reducer cavity is at a second liquid level;

[0047] Figure 7 This is the second front view of the reducer cavity when the lubricating oil is at the second liquid level height according to the embodiment of the present invention;

[0048] Figure 8This is one of the structural diagrams of the motor reducer assembly according to an embodiment of the present invention;

[0049] Figure 9 This is a second structural diagram of a motor reducer assembly according to an embodiment of the present invention;

[0050] Figure 10 Schematic diagram of the lubricating oil circulation flow of the motor reducer assembly according to an embodiment of the present invention;

[0051] Figure 11 Schematic diagram of a flow chart of a method for controlling a reducer assembly according to an embodiment of the present invention;

[0052] Figure 12 Schematic diagram of the control components of the reducer assembly according to an embodiment of the present invention.

[0053] Description of reference numerals:

[0054] 100: motor assembly; 1001, motor cavity;

[0055] 200: Reducer assembly; 1. Reducer; 101. Reducer cavity; 1011. Bottom wall; 1012. Top wall; 1013. Side wall; 102. Oil outlet; 103. Reducer housing; 104. Transmission gear; 1041. First transmission gear; 1042. Second transmission gear; 1043. Third transmission gear; 1044. Fourth transmission gear; 105. Differential; 2. Oil outlet baffle; 201. Opening; 202. Transmission Dynamic center; 3. Filling part; 301. Arc-shaped tooth surface; 302. Recessed part; 303. Bottom; 4. Driving assembly; 401. First arc-shaped rack; 402. First gear; 403. Driving part; 5. Second arc-shaped rack; 6. Second gear; 7. Arc-shaped slide rail; 8. Oil guide space; 9. Support shaft; 10. Map positioning device; 11. Liquid level controller; 12. Position sensor; 13. Speed sensor; 14. Temperature sensor. DETAILED DESCRIPTION

[0056] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0057] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" refers to two or more, unless otherwise clearly and specifically defined.

[0058] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0059] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0060] The following combination Figures 1 to 12 , describing the reducer assembly, motor reducer assembly, vehicle, and control method of an embodiment of the present invention.

[0061] According to an embodiment of the present invention, in a first aspect, a reducer assembly is provided, comprising a reducer 1 and an oil outlet baffle 2. Specifically, Figure 1 As shown, the reducer 1 has a reducer cavity 101, as shown in FIG. Figure 9As shown, the reducer cavity 101 includes a bottom wall 1011, a top wall 1012, and a side wall 1013 disposed between the top wall 1012 and the bottom wall 1011. The side wall 1013 is provided with an oil outlet 102, so that the lubricating oil in the reducer cavity 101 can flow out from the oil outlet 102 on the side wall 1013. The oil outlet baffle 2 covers the oil outlet 102, and the oil outlet baffle 2 is rotatable. Figure 3 As shown, the oil outlet baffle 2 is provided with an opening 201, and the opening 201 is offset from the rotation center 202 of the oil outlet baffle 2, so that the lubricating oil in the reducer cavity 101 can flow out from the oil outlet 102 through the opening 201. Figure 1 As shown, the oil outlet baffle 2 is designed as a circular baffle with an opening 201 , the oil outlet 102 is designed as a matching semicircular ring opening, and the oil outlet baffle 2 is in contact with the side wall 1013 .

[0062] In this way, the oil outlet baffle 2 is rotated, and the opening 201 is driven to rotate accordingly, that is, the relative position of the opening 201 and the oil outlet 2 is changed, thereby changing the opening height of the oil outlet 102, and further changing the liquid level of the lubricating oil in the reducer cavity 101. Specifically, Figure 5 As shown, when the oil outlet baffle 2 rotates to the first position, the opening height of the oil outlet 102 is the first opening height H1, and the liquid level of the lubricating oil in the reducer cavity 101 is at the first liquid level height. Figure 7 As shown, when the oil outlet baffle 2 rotates to the second position, the opening height of the oil outlet 102 is the second opening height H2, and the liquid level of the lubricating oil in the reducer cavity 101 is at the second liquid level. The first opening height H1 is higher than the second opening height H2, and the first liquid level is higher than the second liquid level.

[0063] It should be noted that the opening height of the oil outlet 102 refers to the vertical distance between the lowest position of the oil outlet 102 and the bottom wall 1011 of the reducer cavity 101. Figure 5 As shown, when the oil outlet baffle 2 is in the first position, Figure 5 The middle dotted line is the lowest position of the oil outlet 102 in this state, and the vertical distance between the dotted line and the bottom wall 1011 is the first opening height H1. Figure 7 As shown, when the oil outlet baffle 2 is in the second position, Figure 7 The middle dotted line is the lowest opening position of the oil outlet 102 in this state, and the distance between the dotted line and the bottom wall 1011 in the vertical direction is the second opening height H2.

[0064] With this arrangement, by rotating the oil outlet baffle 2 having the opening 201, the relative position of the opening 201 and the oil outlet 102 is changed, thereby changing the opening height of the oil outlet 102. If the lubricating oil level in the reducer 1 is higher than the opening height of the oil outlet 102, the lubricating oil in the reducer 1 will flow out from the oil outlet 102 and be discharged to the outside, thereby changing the liquid level of the lubricating oil in the reducer cavity 101. In this way, when the vehicle is in a medium or low speed driving condition, by rotating the oil outlet baffle 2 to keep the oil outlet 102 at the first opening height position, the lubricating oil in the reducer cavity 101 is at the first liquid level, i.e., a high liquid level state, ensuring that the splash lubrication effect generated by the gear stirring oil is good and meets the lubrication and heat dissipation requirements. When the vehicle is in a high-speed driving condition, the oil outlet baffle 2 is rotated to keep the oil outlet 102 at the second opening height position, so that the lubricating oil in the reducer cavity 101 is at the second liquid level height, that is, the low liquid level state, which can minimize the oil stirring power loss of the reducer 1, and meet the lubrication and heat dissipation requirements, thereby improving the transmission efficiency of the reducer 1.

[0065] Optionally, in some embodiments of the present invention, Figure 2 As shown, the reducer assembly further includes a filling member 3, which is rotatably disposed in the reducer cavity 101, and the filling member 3 rotates in a direction away from the bottom wall 1011 or in a direction close to the bottom wall 1011, so that the distance between the bottom 303 of the filling member 3 and the bottom wall 1011 of the reducer cavity 101 is adjustable, thereby changing the liquid level of the lubricating oil in the reducer cavity 101. Specifically, as Figure 4 As shown, when the filling member 3 rotates to the third position toward the bottom wall 1011, the distance between the bottom 303 of the filling member 3 and the bottom wall 1011 of the reducer cavity 101 is the first distance C1. At this time, the oil outlet baffle 2 is in the first position, and the lubricating oil level in the reducer cavity 101 is at the first level. For example, if the bottom 303 of the filling member 3 contacts the bottom wall 1011, the first distance C1 is 0. Figure 6 As shown, when the filler 3 rotates to the fourth position away from the bottom wall 1011, the distance between the bottom 303 of the filler 3 and the bottom wall 1011 of the reducer cavity 101 is the second distance C2. At this time, the oil outlet baffle 2 is in the second position, and the lubricating oil level in the reducer cavity 101 is at the second level. The first distance C1 is smaller than the second distance C2.

[0066] It should be noted that, in this embodiment, the distance between the bottom 303 of the filling piece 3 and the bottom wall 1011 of the reducer cavity 101 refers to the distance in the vertical direction between the lowest position of the bottom 303 of the filling piece 3 and the bottom wall 1011 inside the reducer cavity 101. Figure 4As shown, when the filler 3 rotates to the third position, the bottom 303 of the filler 3 is parallel to the bottom wall 1011 of the reducer cavity 101. At this time, the vertical distance between the two is the first spacing C1. In this way, the filler 3 is positioned relatively low, which helps to promote the rapid increase of the lubricating oil level. Figure 6 As shown, when the filling piece 3 rotates to the fourth position, Figure 6 The dotted line is the lowest position of the bottom 303 of the filling piece 3 in this state, and the distance between the dotted line and the bottom wall 1011 in the vertical direction is the second spacing C2. In this way, the filling piece 3 is positioned relatively high, which is conducive to the lubricating oil flowing back to the bottom of the cavity, thereby promoting the rapid reduction of the lubricating oil level.

[0067] With such a configuration, the filling piece 3 can change the internal space structure distribution of the reducer cavity 101, so that by adjusting the position of the filling piece 3, the lubricating oil in the reducer cavity 101 can be adjusted to the target liquid level height more quickly, and then the filling piece 3 and the oil outlet baffle 2 work together to achieve rapid adjustment of the lubricating oil level.

[0068] Optionally, in some embodiments of the present invention, the reducer assembly further includes a drive assembly 4, which is used to drive the filling member 3 to rotate, or the drive assembly 4 is used to drive the oil outlet baffle 2 to rotate, and the filling member 3 and the oil outlet baffle 2 are arranged in a linkage manner so that one of the filling member 3 and the oil outlet baffle 2 can drive the other to rotate. Moreover, when the filling member 3 rotates toward the direction close to the bottom wall 1011, the opening 201 rotates toward the direction away from the bottom wall 1011. Specifically, Figure 4 As shown, the filling member 3 rotates to the third position, and the oil outlet baffle 2 rotates to the first position. When the filling member 3 rotates away from the bottom wall 1011, the opening 201 rotates toward the bottom wall 1011. Specifically, Figure 6 As shown, the filling piece 3 rotates to the fourth position, and the oil outlet baffle 2 rotates to the second position.

[0069] With this arrangement, the filler 3 and the oil outlet baffle 2 are linked together. When one is driven to rotate, the other rotates accordingly, achieving rapid adjustment of the lubricating oil level. Thus, the linkage between the filler 3 and the oil outlet baffle 2 is achieved through a single drive structure, resulting in a simple and compact structure that helps optimize the internal spatial layout of the reducer 1. Of course, in other embodiments, two drive structures may be provided to independently drive the rotation of the filler 3 and the oil outlet baffle 2.

[0070] Optionally, in some embodiments of the present invention, Figure 3As shown, the drive assembly 4 includes a first curved rack 401, a first gear 402, and a drive member 403. The first curved rack 401 is mounted on the filler 3 and is used to rotate the filler 3, which in turn rotates the oil outlet baffle 2. The first gear 402 meshes with the first curved rack 401, and the output end of the drive member 403 is in driving connection with the first gear 402. The drive member 403 is used to rotate the first gear 402, thereby driving the filler 3 via the first curved rack 401.

[0071] Specifically, the driving member 403 is a motor, which is fixedly mounted on the reducer housing 103, and the motor's output shaft is connected to the first gear 402. The motor drives the first gear 402 to rotate, which in turn drives the meshing first arc-shaped rack 401 to rotate. In turn, the first arc-shaped rack 401 drives the filler 3 to rotate. Since the filler 3 and the oil outlet baffle 2 are arranged in a linked manner, the oil outlet baffle 2 is driven to rotate accordingly. In this way, through the meshing transmission of the first gear 402 and the first arc-shaped rack 401, the rotation angle and position of the filler 3 can be precisely controlled, thereby accurately driving the oil outlet baffle 2 to rotate and achieving precise adjustment of the opening height of the oil outlet 102.

[0072] Optionally, in some embodiments of the present invention, the reducer assembly further includes a second arc-shaped rack 5 and a second gear 6. Figure 3 As shown, the second arc-shaped rack 5 is provided on the filling member 3, so that when the first arc-shaped rack 401 drives the filling member 3 to rotate, the filling member 3 can drive the second arc-shaped rack 5 to rotate. The second gear 6 is meshed with the second arc-shaped rack 5, and the second gear 6 is coaxially arranged with the oil outlet baffle 2 and rotates synchronously. Optionally, as Figure 3 As shown, the support shaft 9 is rotatably mounted on the reducer housing 103 , and the second gear 6 and the oil outlet baffle 2 are both fixedly mounted on the support shaft 9 .

[0073] Specifically, when the filler 3 rotates, it drives the second arcuate rack 5 to rotate accordingly, thereby driving the second gear 6 to rotate, and further driving the oil outlet baffle 2 to rotate synchronously. In this way, through the meshing transmission of the second arcuate rack 5 and the second gear 6, the filling member 3 and the oil outlet baffle 2 can be easily linked, which is flexible and convenient to operate. Moreover, the use of the arcuate rack and gear transmission method can achieve rotational action within a limited space, improving the compactness of the device.

[0074] Optionally, in some embodiments of the present invention, the reducer assembly further includes a matching guide member and an arcuate slide rail 7, wherein the guide member is slidably connected to the arcuate slide rail 7 and slides along the arcuate slide rail 7. The reducer 1 includes a reducer housing 103, within which a reducer cavity 101 is formed. One of the reducer housing 103 and the filler 3 is provided with a guide member, and the other is provided with the arcuate slide rail 7.

[0075] That is, the reducer housing 103 is provided with a guide member, and the filler 3 is provided with an arc-shaped slide rail 7 correspondingly; or, the filler 3 is provided with a guide member, and the reducer housing 103 is provided with an arc-shaped slide rail 7 correspondingly. Figure 3 As shown, the filler 3 is provided with an arcuate slide rail 7, and the rotation center of the filler 3 is the center of the circle of the arcuate slide rail 7. Accordingly, the reducer housing 103 is provided with a guide member, which can be a corresponding guide column or arcuate guide bar. The guide member is embedded in the arcuate slide rail 7 and slides along the arcuate slide rail 7.

[0076] With such a configuration, the arc-shaped slide rail 7 provides a certain motion trajectory for the guide member, so that the filler 3 can move according to a predetermined path during the rotation process, thereby avoiding the filler 3 from experiencing unstable phenomena such as offset and shaking during rotation, ensuring the accuracy of its motion trajectory, and further ensuring the smoothness and accuracy of the rotation of the oil outlet baffle 2, making the lubricating oil level adjustment more accurate and reliable.

[0077] Optionally, in some embodiments of the present invention, Figure 2 As shown, the reducer 1 includes at least one transmission gear 104, which is disposed in the reducer cavity 101. The filler 3 is provided with an arc-shaped tooth surface 301 arranged along the circumference of the transmission gear 104, and an oil guide space 8 is formed between the arc-shaped tooth surface 301 and the transmission gear 104 for allowing lubricating oil to splash along the direction from the bottom to the top of the transmission gear 104. It should be noted that Figure 2 The direction indicated by the middle arrow indicates the direction of lubricating oil throwing.

[0078] Specifically, Figure 2 Taking the gear transmission structure shown in the figure as an example, the reducer 1 includes a first transmission gear 1041, a second transmission gear 1042, a third transmission gear 1043, and a fourth transmission gear 1044. Each transmission gear 104 is rotatably mounted on the reducer housing 103. The first transmission gear 1041 meshes with the second transmission gear 1042. The second transmission gear 1042 and the third transmission gear 1043 are coaxially arranged and rotate synchronously. The third transmission gear 1043 and the fourth transmission gear 1044 mesh together, thereby forming a transmission path of first transmission gear 1041 - second transmission gear 1042 - third transmission gear 1043 - fourth transmission gear 1044. The reducer 1 also includes a differential 105. The differential 105 and the fourth transmission gear 1044 are coaxially arranged and rotate synchronously to achieve differential speed adjustment when the vehicle turns, ensuring vehicle driving stability and controllability.

[0079] And, as Figure 4 and Figure 6As shown, the filler 3 rotates up and down with the center of the fourth transmission gear 1044 as the rotation center, thereby changing the internal space structure distribution of the reducer cavity 101. Figure 2 As shown, the arc-shaped tooth surface 301 and the fourth transmission gear 1044 are concentrically arranged, and there is a gap between the arc-shaped tooth surface 301 and the fourth transmission gear 1044 to form an oil guide space 8.

[0080] In this way, Figure 2 As shown, the gap between the filler 3 and the transmission gear 104 can guide the splashing of lubricating oil, causing the lubricating oil to be flung from the bottom to the top of the transmission gear 104, which is beneficial for lubricating high-position gears, bearings, and the input shaft. This also facilitates the layout and installation of the filler 3 within the limited space inside the reducer 1, improving the compactness of the device and facilitating its implementation and application.

[0081] In addition, if Figure 3 As shown, the filling piece 3 is further provided with a recessed portion 302. Optionally, the recessed portion 302 is an arc-shaped recessed portion. Figure 7 As shown, when the filling piece 3 is rotated to the fourth position, the recessed portion 302 can form an avoidance space for the transmission gear 104, i.e., the first transmission gear 1041, thereby facilitating the installation and rotation adjustment of the filling piece 3, saving space, making the overall structure more compact, and facilitating overall layout and optimization.

[0082] According to an embodiment of the present invention, in a second aspect, a motor reducer assembly is provided, which is suitable for an electric drive system of a new energy vehicle. The motor reducer assembly includes a motor assembly 100 and a reducer assembly 200. Figure 8 As shown, the motor assembly 100 has a motor cavity 1001. The reducer assembly 200 is connected to the output end of the motor assembly 100. The reducer assembly 200 is the reducer assembly in each of the above embodiments. Figure 9 As shown, the motor cavity 1001 is connected to the reducer cavity 101 through the oil outlet 102. Figure 10 As shown, the oil pump pumps lubricating oil from the oil pan cavity, passes through the heat exchanger, and then flows into the reducer cavity 101 and the motor cavity 1001. When the lubricating oil level in the reducer cavity 101 is higher than the opening height of the oil outlet 102, the lubricating oil in the reducer cavity 101 will flow through the oil outlet 102 to the motor cavity 1001, and then flow back to the oil pan cavity, realizing the circulation of the lubricating oil.

[0083] Thus, when the oil pump's oil output remains constant, the lubricating oil level within the reducer cavity 101 can be adjusted by varying the opening height of the oil outlet 102. The derivation process for this beneficial effect is largely similar to that for the aforementioned reducer assembly and will not be further elaborated here. Furthermore, by providing a filler 3 for auxiliary adjustment and altering the internal spatial structure of the reducer cavity 101, rapid adjustment of the lubricating oil level can be achieved to accommodate rapid changes in vehicle speed.

[0084] According to an embodiment of the present invention, in a third aspect, a vehicle is provided, comprising the motor-reducer assembly of the above-described embodiment. Optionally, the vehicle is a vehicle, a low-altitude aircraft, or the like. The derivation process for this beneficial effect is substantially similar to that for the above-described motor-reducer assembly, and therefore will not be further elaborated here.

[0085] According to an embodiment of the present invention, in a fourth aspect, a control method for a reducer assembly as described in each of the above embodiments is further provided, comprising:

[0086] Step S1: Obtain the real-time driving conditions of the vehicle;

[0087] Step S2: controlling the rotational positions of the oil outlet baffle 2 and the filling member 3 according to the real-time driving road conditions.

[0088] Specifically, take new energy vehicles as an example to describe, Figure 12 As shown, while the vehicle is traveling, a high-precision map positioning device 10 identifies current road condition information, such as the vehicle's position, and transmits this real-time acquired road condition information to a liquid level controller 11. The liquid level controller 11 receives this real-time road condition information and, based on it, issues control instructions to a driver 403, thereby controlling the rotational position of the oil outlet baffle 2 and the filler 3, thereby regulating the lubricating oil level. The derivation process for this beneficial effect is generally similar to that for the aforementioned reducer assembly, and therefore will not be further elaborated here.

[0089] Optionally, in some embodiments of the present invention, the driving road conditions include freeway conditions and highway conditions, and the control method of the speed reducer assembly further includes:

[0090] Step S3: When the real-time driving road condition is an expressway or highway condition, obtaining the real-time operating temperature of the reducer 1;

[0091] Step S4: adjusting the rotational positions of the oil outlet baffle 2 and the filling member 3 according to the real-time operating temperature.

[0092] Specifically, when the vehicle is on an expressway or highway, the internal operating temperature of the reducer 1 is monitored by the temperature sensor 14, and the temperature signal is fed back to the liquid level controller 11 in real time, thereby controlling the rotation position of the oil outlet baffle 2 and the filler 3, and adjusting the liquid level of the lubricating oil to prevent the temperature from being too high and affecting the performance of the reducer.

[0093] Furthermore, if the vehicle is not on an expressway or highway, the real-time lubricating oil level adjustment system is deactivated. This is because when the vehicle is not on an expressway or highway, factors such as road conditions, traffic lights, and speed limits affect the high-speed driving range, resulting in a small proportion of the vehicle's travel time and a large and frequent speed change. Real-time lubricating oil level adjustment would require frequent adjustments to the rotational position of the oil outlet baffle 2 and filler 3, consuming significant energy and resulting in a low adjustment yield. Therefore, the real-time lubricating oil level adjustment system is deactivated.

[0094] Optionally, in some embodiments of the present invention, the control method of the reducer assembly further includes:

[0095] Step S5: When the real-time working temperature is greater than or equal to the preset temperature, the filling member 3 is controlled to rotate toward the bottom wall 1011 and the opening 201 is controlled to rotate away from the bottom wall 1011. Figure 4 As shown, the oil outlet baffle 2 rotates to the first position, and the filling piece 3 rotates to the third position.

[0096] Specifically, when the temperature sensor 14 detects that the internal operating temperature of the reducer 1 is high and exceeds a preset value, the oil outlet baffle 2 is rotated to the first position and the filler 3 is rotated to the third position to ensure that the lubricating oil level is at a high level, quickly remove the heat generated by the transmission system, ensure that the internal operating temperature of the reducer 1 is reduced to an appropriate temperature range, and ensure the efficient operation of all components of the reducer. It should be noted that the specific setting of the preset temperature should be determined according to actual design requirements.

[0097] Optionally, in some embodiments of the present invention, the control method of the reducer assembly further includes:

[0098] Step S6: When the real-time operating temperature is lower than the preset temperature, obtaining the real-time speed of the vehicle;

[0099] Step S7: adjusting the rotational positions of the oil outlet baffle 2 and the filling member 3 according to the real-time vehicle speed.

[0100] Specifically, when the temperature sensor 14 detects that the internal operating temperature of the reducer 1 has not exceeded a preset value, the speed sensor 13 monitors the vehicle's real-time speed and transmits the collected real-time speed information to the liquid level controller 11. The liquid level controller 11 receives the real-time speed information and controls the rotational position of the oil outlet baffle 2 and the filler 3 based on the real-time speed information, thereby adjusting the lubricating oil level.

[0101] In addition, if Figure 12 As shown, the position sensor 12 monitors the speed and angle of rotation of the driving member 403, i.e., the motor, and other parameter information, and then monitors the rotation position of the oil outlet baffle 2 and the filling member 3, thereby forming feedback adjustment to ensure that the oil outlet baffle 2 and the filling member 3 are adjusted in place, thereby achieving precise adjustment of the lubricating oil level.

[0102] In summary, combined with Figure 11 and Figure 12 As shown, in this embodiment, the reducer assembly can adjust the lubricating oil level in the reducer 1 in real time. The specific working principle is as follows:

[0103] When the vehicle starts to travel, the map positioning device 10 monitors the vehicle position and road condition information to identify whether the vehicle is traveling on an expressway or a highway.

[0104] If the vehicle is not on an expressway or highway, the lubricating oil level real-time adjustment system will not be activated.

[0105] If the vehicle is on an expressway or highway, the lubricating oil level real-time adjustment system will be activated. Figure 4 As shown, the oil outlet baffle 2 rotates to the first position and the filler 3 rotates to the third position, at which point the lubricating oil level is at the first level. The temperature sensor 14 monitors the real-time operating temperature of the reducer 1, and the level controller 11 adjusts the rotational position of the oil outlet baffle 2 and filler 3 based on the real-time operating temperature signal. If the operating temperature of the reducer 1 exceeds a preset temperature, the oil outlet baffle 2 is controlled to rotate to the first position and the filler 3 to the third position, at which point the lubricating oil level is at the first level, ensuring that the lubricating oil level remains high.

[0106] If the operating temperature of the reducer 1 does not exceed a preset temperature, the speed sensor 13 monitors the vehicle's real-time speed. The level controller 11 adjusts the rotational position of the oil outlet baffle 2 and filler 3 based on the real-time vehicle speed, and determines whether the oil outlet baffle 2 and filler 3 are properly adjusted based on the feedback signal from the position sensor 12. Thus, the lubricating oil level is adjusted by the oil outlet baffle 2 and filler 3. This simple structure and fast response enable dynamic, real-time adjustment of the lubricating oil level in the reducer 1, significantly reducing the oil churning power loss of the reducer 1 during high-speed driving and significantly reducing the energy consumption of the electric drive system.

[0107] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A reducer assembly, characterized in that: include: A reducer (1) has a reducer cavity (101), wherein the reducer cavity (101) comprises a bottom wall (1011), a top wall (1012), and a side wall (1013) arranged between the top wall (1012) and the bottom wall (1011), wherein the side wall (1013) is provided with an oil outlet (102); An oil outlet baffle (2) covers the oil outlet (102), and the oil outlet baffle (2) is rotatably arranged. The oil outlet baffle (2) is provided with an opening (201), and the opening (201) is offset from the rotation center (202) of the oil outlet baffle (2).

2. The reducer assembly according to claim 1, characterized in that: Also includes: A filling piece (3) is rotatably disposed in the reducer cavity (101), and the filling piece (3) rotates in a direction away from the bottom wall (1011) or in a direction close to the bottom wall (1011), so that the distance between the bottom (303) of the filling piece (3) and the bottom wall (1011) is adjustable.

3. The reducer assembly according to claim 2, characterized in that: Also includes: A driving assembly (4) is used for driving the filling piece (3) to rotate or the oil outlet baffle (2) to rotate, and the filling piece (3) and the oil outlet baffle (2) are arranged in a linkage manner, and when the filling piece (3) rotates in a direction away from the bottom wall (1011), the opening (201) rotates in a direction close to the bottom wall (1011); when the filling piece (3) rotates in a direction close to the bottom wall (1011), the opening (201) rotates in a direction away from the bottom wall (1011).

4. The reducer assembly according to claim 3, characterized in that: The driving assembly (4) comprises: a first arc-shaped rack (401) provided on the filling member (3), the first arc-shaped rack (401) being used to drive the filling member (3) to rotate, and the filling member (3) being used to drive the oil outlet baffle (2) to rotate; a first gear (402) meshing with the first arc-shaped rack (401); The driving member (403) has an output end in transmission connection with the first gear (402), and the driving member (403) is used to drive the first gear (402) to rotate, so as to drive the filling member (3) to rotate through the first arc-shaped rack (401).

5. The reducer assembly according to claim 4, characterized in that: Also includes: a second arc-shaped rack (5) provided on the filling piece (3) so that when the first arc-shaped rack (401) drives the filling piece (3) to rotate, the filling piece (3) can drive the second arc-shaped rack (5) to rotate; The second gear (6) is meshed with the second arc-shaped rack (5), and the second gear (6) and the oil outlet baffle (2) are coaxially arranged and rotate synchronously.

6. The reducer assembly according to any one of claims 2 to 5, characterized in that: Also includes: A matching guide member and an arc-shaped slide rail (7), wherein the guide member is slidably connected to the arc-shaped slide rail (7), and the guide member slides along the arc-shaped slide rail (7); The reducer (1) comprises a reducer housing (103), wherein the reducer housing (103) has the reducer cavity (101), and one of the reducer housing (103) and the filler (3) is provided with the guide member, and the other is provided with the arc-shaped slide rail (7).

7. The reducer assembly according to any one of claims 2 to 5, characterized in that: The reducer (1) comprises: At least one transmission gear (104) is arranged in the reducer cavity (101), and the filling piece (3) is provided with an arc-shaped tooth surface (301) arranged along the circumference of the transmission gear (104), and an oil guide space (8) is formed between the arc-shaped tooth surface (301) and the transmission gear (104) for splashing lubricating oil along the direction from the bottom to the top of the transmission gear (104).

8. A motor reducer assembly, characterized in that: include: A motor assembly (100) having a motor cavity (1001); A reducer assembly (200) is transmission-connected to the output end of the motor assembly (100), the reducer assembly (200) is the reducer assembly according to any one of claims 1 to 7, and the motor cavity (1001) is connected to the reducer cavity (101) through the oil outlet (102).

9. A vehicle, characterized in that: Comprising the motor reducer assembly as claimed in claim 8.

10. A control method for a reducer assembly according to any one of claims 2 to 7, characterized in that: include: Obtain the real-time driving conditions of the vehicle; The rotational positions of the oil outlet baffle (2) and the filling member (3) are controlled according to the real-time driving road conditions.

11. The control method of the reducer assembly according to claim 10, characterized in that: The driving road conditions include freeway conditions and highway conditions, and the control method of the reducer assembly further includes: When the real-time driving road condition is the expressway road condition or the highway road condition, obtaining the real-time operating temperature of the reducer (1); The rotational positions of the oil outlet baffle (2) and the filling member (3) are adjusted according to the real-time operating temperature.

12. The control method of the reducer assembly according to claim 11, characterized in that: Also includes: When the real-time operating temperature is greater than or equal to a preset temperature, the filling piece (3) is controlled to rotate in a direction approaching the bottom wall (1011), and the opening (201) is controlled to rotate in a direction away from the bottom wall (1011).

13. The control method of the reducer assembly according to claim 12, characterized in that: Also includes: When the real-time operating temperature is lower than the preset temperature, obtaining the real-time speed of the vehicle; The rotational positions of the oil outlet baffle (2) and the filling member (3) are adjusted according to the real-time vehicle speed.

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