An oil guiding device for an extended-range hybrid transmission

Abstract

The present application provides an oil guiding device for an extended-range hybrid transmission, which includes a box body and an oil guiding member. The box body is provided with a gear cavity for accommodating a gear shaft system, and the gear shaft system includes a differential gear and an engine gear. The lubricating oil stirred by the rotation of the differential gear flows into the first oil guiding channel of the oil guiding member, and then is guided to the side wall of the engine gear. The rotation of the engine gear causes the lubricating oil to splash onto the engine gear and its bearings, completing the splash lubrication of the engine gear, thereby improving the lubricating oil efficiency. Among them, the extended-range hybrid transmission of the present application is based on the existing series-parallel hybrid transmission, removing the clutch assembly and installing the oil guiding member at the installation hole position of the clutch assembly, so as to realize the design of the extended-range hybrid transmission on the basis of the series-parallel hybrid transmission without re-designing the box body and various gear components inside the box body, reducing the R & D cost.

Description

Technical Field

[0001] This application relates to the field of vehicles, and particularly to an oil guiding device for an extended-range hybrid transmission case. Background Art

[0002] Plug-in pure electric vehicles have a series of problems such as short cruising range and high battery cost. Therefore, extended-range hybrid vehicles are born under such a background. By generating electricity through an extender, the mileage anxiety problem of electric vehicles is solved.

[0003] The amount of lubricating oil is extremely important for the lubrication efficiency of the extended-range hybrid transmission case. On the one hand, if there is too much lubricating oil, the oil stirring loss is large, reducing the transmission efficiency. On the other hand, if there is too little lubricating oil, the lubrication of the engine shaft and its bearings is insufficient. However, most of the extended-range hybrid transmission cases on the market are based on the parallel hybrid transmission case, with low general applicability. Often, the box structure needs to be redesigned, especially the oil guiding of the lubricating oil needs to be redesigned, resulting in too high design cost and long R & D cycle. Summary of the Invention

[0004] This application provides an oil guiding mechanism for an extended-range hybrid transmission case, which is used to solve the problem that the extended-range hybrid transmission case needs to be redesigned to balance the lubricating oil efficiency.

[0005] In order to solve the above problems, this application adopts the following technical solutions to achieve:

[0006] This application provides an oil guiding device for an extended-range hybrid transmission case, including:

[0007] A box body, provided with a gear cavity for accommodating a gear shaft system, the gear shaft system includes a differential shaft and an engine shaft. Among them, a differential gear is installed at one end of the differential shaft, and an engine gear is installed at one end of the engine shaft; and

[0008] An oil guiding member, arranged in the gear cavity, the oil guiding member is provided with a first oil guiding channel, and the differential gear rotates to stir the lubricating oil to flow to the side wall of the engine gear through the first oil guiding channel.

[0009] Further, the oil guiding device further includes a filter, the oil guiding member is further provided with a second oil guiding channel, and the differential gear rotates to stir the lubricating oil to flow to the filter through the second oil guiding channel.

[0010] Further, the oil guiding member includes a main body and a partition plate. The outer side of the main body has a groove, and the partition plate is located in the groove to divide the groove into the first oil guiding channel and the second oil guiding channel.

[0011] Further, the flow rate of the lubricating oil passing through the first oil guiding channel is greater than the flow rate of the lubricating oil passing through the second oil guiding channel.

[0012] Further, the oil guiding member includes a left housing and a right housing, and the left housing and the right housing are fixedly connected.

[0013] Further, the left housing is provided with a first cavity with an opening on one side, the right housing is provided with a second cavity with an opening on one side, the first cavity and the second cavity are communicated, and the openings of the first cavity and the second cavity are oppositely arranged to form a third cavity.

[0014] Further, the third cavity is in a sealed state.

[0015] Further, the right housing is provided with an opening groove, and a limiting portion adapted to the opening groove is provided on the inner wall of the box body, and the limiting portion abuts against the opening groove to limit the rotation of the oil guiding member.

[0016] Further, the oil guiding member is provided with an avoidance groove for avoiding the differential gear.

[0017] Further, the oil guiding member is provided with two support surfaces, and the two support surfaces are respectively located on both sides of the oil guiding member along the first direction, and the support surfaces are used for installing the oil guiding member.

[0018] The present application provides an oil guiding device for an extended-range hybrid transmission, including a box body and an oil guiding member. Among them, the box body is provided with a gear cavity for accommodating a gear shaft system. The gear shaft system includes a differential gear and an engine gear. The oil guiding member is arranged in the gear cavity. The oil guiding member is provided with a first oil guiding channel. The differential gear rotates to stir the lubricating oil to flow to the side of the engine gear through the first oil guiding channel. When the engine shaft moves to drive the engine gear installed on the engine shaft to move, it is used to complete the splash lubrication of the engine gear and its bearings, and avoid affecting the service life due to poor lubrication of the engine gear and its bearings. Among them, the extended-range hybrid transmission of the present application is based on the parallel hybrid, removes the clutch assembly, and installs the oil guiding member at the installation hole position of the clutch assembly, so as to realize the design of the extended-range hybrid transmission on the basis of the parallel hybrid transmission, without re-designing the box body and the gear components at all levels in the box body, and reducing the R & D cost. Description of the Drawings

[0019] Figure 1 Schematic diagram of the installation positions of the gears at all levels in the existing parallel hybrid transmission;

[0020] Figure 2 Schematic diagram of the relative positions of the gear installation positions and the oil level line in the existing parallel hybrid transmission;

[0021] Figure 3 Schematic diagram of the installation positions of the gears at all levels in the existing parallel hybrid transmission, showing the oil level line;

[0022] Figure 4 Schematic diagram of the oil guiding device of an extended-range hybrid transmission provided by an embodiment of the present application, showing the first oil guiding channel and the second oil guiding channel therein;

[0023] Figure 5 Installation schematic diagram of an oil guiding part provided by an embodiment of the present application, showing the rotation directions of the differential gear and the engine gear therein;

[0024] Figure 6 Top view of the installation positions of the differential gear, the engine gear and the oil guiding part provided by an embodiment of the present application;

[0025] Figure 7 Schematic diagram of the position of the first partition plate provided by an embodiment of the present application;

[0026] Figure 8 Schematic diagram of the position of the second partition plate provided by an embodiment of the present application;

[0027] Figure 9 Schematic diagram of the position of the third partition plate provided by an embodiment of the present application;

[0028] Figure 10 Schematic diagram of a left housing provided by an embodiment of the present application;

[0029] Figure 11 Schematic diagram of an oil guiding part provided by an embodiment of the present application, showing the first support surface and the second support surface therein;

[0030] Figure 12 For Figure 11 Exploded view of the oil guiding part in [reference], showing the first cavity and the second cavity therein;

[0031] Figure 13 For Figure 11 Cross-sectional view of the oil guiding part in [reference], showing the third cavity therein;

[0032] Figure 14 For Figure 11 Schematic diagram of the oil guiding part from another perspective in [reference], showing the opening groove therein;

[0033] Figure 15 Partial schematic diagram of a housing provided by an embodiment of the present application, showing the limiting parts on the inner wall of the housing; and

[0034] Figure 16 Schematic diagram of another oil guiding part provided by an embodiment of the present application, showing the avoidance groove therein.

[0035] Explanation of reference numerals

[0036] 1. Box body; 10. Clutch assembly; 11. Driving motor gear; 12. Intermediate shaft gear; 13. Differential gear; 14. Engine gear; 141. Side wall of engine gear; 15. Generator gear; 16. Filter; 17. Limiting part; 171. First limiting part; 172. Second limiting part; 2. Oil guiding part; 20. Third cavity; 21. Groove; 22. First oil guiding channel; 221. Oil inlet of first oil guiding channel; 23. Second oil guiding channel; 231. Oil inlet of second oil guiding channel; 24. Partition plate; 25. Left shell; 251. First cavity; 252. Avoidance groove; 253. First supporting surface; 26. Right shell; 261. Second cavity; 262. Opening groove; 263. Second supporting surface; 3. Oil level line. Detailed implementation manners

[0037] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] In the various specific technical features described in the specific embodiments, without conflict, they can be combined in any suitable manner. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, various possible combination methods of the specific technical features in the present application will not be described separately.

[0039] In the following description, the terms "first / second / ..." involved are only used to distinguish different objects and do not indicate that there are the same or related relationships between the objects. It should be understood that the orientation descriptions "above", "below", "outside", and "inside" involved are all orientations in the normal use state, and the "left" and "right" directions represent the left and right directions shown in the specific corresponding schematic diagrams, which can be the left and right directions in the normal use state or not.

[0040] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that element. The term "connection" includes both direct connection and indirect connection without special description.

[0041] At present, there are mainly two design schemes for extended-range hybrid boxes in the market. The first one is to remove the clutch assembly based on the parallel hybrid box and design it into an extended-range hybrid box. Among them, due to the removal of the clutch assembly, when the lubricating oil quantity of the extended-range hybrid box is the same as that of the parallel hybrid box, the oil level of the extended-range hybrid box is lower than that of the parallel hybrid box. The reduction of the oil level in the extended-range hybrid box will cause poor lubrication of the engine shaft and its bearings. If the oil quantity of the extended-range hybrid box is increased to maintain the same oil level as that of the parallel hybrid box, it will result in large oil churning losses of the gears and reduce the transmission efficiency. The second one is to retain the clutch shaft assembly based on the parallel hybrid box, making it only have the function of guiding oil. At the same time, the clutch assembly is set in a fixed state and does not transmit torque, so as to design it into an extended-range hybrid box. Since the main function of the clutch assembly is to cut off and couple energy transmission, and the extended-range hybrid box does not require this function, retaining the clutch shaft assembly increases the production cost of the extended-range hybrid box and causes waste of resources.

[0042] In view of this, combined with Figures 1 to 6 , an oil guiding device for an extended-range hybrid box provided by an embodiment of the present application includes a box body 1 and an oil guiding member 2. Among them, the gear shaft system includes a differential shaft and an engine shaft. One end of the differential shaft is provided with a differential gear 13, and one end of the engine shaft is provided with an engine gear 14. The oil guiding member 2 is arranged in the gear cavity. The oil guiding member 2 is provided with a first oil guiding channel 22. The differential gear 13 rotates to stir the lubricating oil to flow to the side wall 141 of the engine gear through the first oil guiding channel 22.

[0043] Specifically, the box body 1 is provided with a gear cavity for accommodating the gear shaft system. The gear shaft system includes a differential shaft and an engine shaft. One end of the engine shaft is provided with an engine gear 14, and one end of the differential shaft is provided with a differential gear 13. The lubricating oil stirred by the rotation of the differential gear 13 flows to the first oil guiding channel 22 of the oil guiding member 2 and then is guided to the side wall 141 of the engine gear. The rotation of the engine gear 14 splashes the lubricating oil onto the engine gear 14 and its bearings, completing the splash lubrication of the engine gear 14 and its bearings, thereby improving the lubrication efficiency. It should be noted that since the clutch assembly 10 of the existing parallel hybrid box is located below the oil level line 3, after removing the clutch assembly 10 and retaining the rest of the components, and designing the parallel hybrid box into an extended-range hybrid box, in the state of the same oil quantity, the oil level line 3 of the extended-range hybrid box decreases, resulting in poor lubrication of the engine gear 14 and its bearings. Therefore, only the clutch assembly 10 can be removed and replaced with the oil guiding member 2 without improving the design of the box body 1, thereby reducing the design cost.

[0044] In particular, the gear shaft system includes a differential gear 13, an engine gear 14, a drive motor gear 11, an intermediate shaft gear 12 and a generator gear 15. When the extended-range hybrid case is in the extended-range working mode, the engine runs to make the generator generate electricity, a part of which is used to drive the vehicle, and the excess electricity is used to charge the power battery. The extended-range mode system is connected in the order of engine gear 14-generator gear 15-power battery charging-drive motor gear 11-intermediate shaft gear 12-differential gear 13 to drive the vehicle. The lubricating oil stirred by the rotation of the differential gear 13 flows to the first oil guide channel 22 of the oil guide member 2, and then to the engine gear side wall 141. The engine gear 14 rotates to splash the lubricating oil onto the engine gear 14 and its bearings, completing the splash lubrication of the engine gear 14 and its bearings. In addition, since the clutch assembly 10 of the parallel-parallel hybrid case is located below the oil level line 3, after the clutch assembly 10 is removed and the remaining components are retained, and the parallel-parallel hybrid case is designed as an extended-range hybrid case, under the same oil volume state, the oil level line 3 of the extended-range hybrid case is lowered, resulting in poor lubrication of the engine gear 14 and its bearings.

[0045] In one embodiment, in order to solve the problem of lowered oil level, the outer surface volume of the oil guide member 2 is set equal to the outer surface volume of the clutch assembly 10, the clutch assembly 10 of the parallel-parallel hybrid case is removed, and the oil guide member 2 is installed at the installation position of the clutch shaft, so as to achieve the purpose of switching the parallel-parallel hybrid case to the extended-range hybrid case. Among them, the oil guide member 2 is close to the bottom of the extended-range hybrid case and is located below the oil level line 3, so as to realize the oil occupancy function of the oil guide member 2. That is, the oil guide member 2 in the extended-range hybrid case has the functions of guiding and occupying oil.

[0046] In some embodiments, Figures 3 to 4 As shown, the oil guide device also includes a filter 16, and the oil guide member 2 is further provided with a second oil guide channel 23. The differential gear 13 rotates to stir the lubricating oil to be guided to the filter 16 through the second oil guide channel 23. Specifically, when the extended-range hybrid case is in the extended-range working mode, the drive motor gear 11 drives the differential gear 13 to rotate to stir the lubricating oil to be guided to the second oil guide channel 23 of the oil guide member 2, and then transported to the cavity of the filter 16, ensuring that the oil cavity of the filter 16 has sufficient oil absorption capacity and does not inhale air.

[0047] In order to better understand the oil guiding function of the oil guiding member 2 in the embodiment of the present application, Figures 1 to 6 , the oil guiding process of the oil guiding member 2 is explained.

[0048] The housing 1 is provided with a gear chamber for accommodating a gear shaft system. The gear shaft system includes a differential gear 13, an engine gear 14, a drive motor gear 11, an intermediate shaft gear 12, and a generator gear 15. The oil guiding member 2 is installed below the differential gear 13 and the engine gear 14. When the extended-range hybrid transmission is in the extended-range working mode, the lubricating oil stirred by the rotation of the differential gear 13 is divided into two parts through the first oil guiding channel 22 and the second oil guiding channel 23. One part of the lubricating oil is guided to the side wall 141 of the engine gear through the first oil guiding channel 22. The rotation of the engine gear 14 causes the lubricating oil to splash onto the engine gear 14 and its bearings, completing the splash lubrication of the engine gear 14 and its bearings. The other part of the lubricating oil is guided to the oil chamber of the filter 16 through the second oil guiding channel 23 to ensure that the oil absorption amount of the oil chamber of the filter 16 is sufficient.

[0049] In some embodiments, the oil guiding member 2 includes a groove 21 and a partition plate 24. The outer side of the oil guiding member 2 has a groove 21, and the partition plate 24 is located in the groove 21 to divide the groove 21 into a first oil guiding channel 22 and a second oil guiding channel 23. Specifically, the partition plate 24 is welded in the groove 21 with high welding strength to prevent the partition plate 24 from loosening or detaching from the groove 21 when the lubricating oil stirred by the rotation of the differential gear 13 impacts the partition plate 24. Among them, the lubricating oil flow rates of the first oil guiding channel 22 and the second oil guiding channel 23 are controlled by controlling the position of the partition plate 24 in the groove 21. For example, as Figure 7 shown, the partition plate 24 is perpendicular to the groove 21 to avoid the partition plate 24 being inclined in the groove 21, which is subject to a large impact force of the lubricating oil stirred by the rotation of the differential gear 13 and reduces the service life of the partition plate 24. When it is necessary to preferentially ensure the lubrication of the engine gear 14 and its bearings in the hybrid transmission, the partition plate 24 is arranged in a straight plate shape and perpendicular to the groove 21. The first end face 131 of the partition plate 24 close to the differential gear is set, so that the width of the oil inlet 221 of the first oil guiding channel 22 is greater than the width of the oil inlet 231 of the second oil guiding channel 23. The lubricating oil stirred by the rotation of the differential gear 13 is divided into two parts through the first oil guiding channel 22 and the second oil guiding channel 23. Since the width of the oil inlet 221 of the first oil guiding channel 22 is greater than the width of the oil inlet 231 of the second oil guiding channel 23, the flow rate of the first oil guiding channel 22 is greater than the flow rate of the second oil guiding channel 23. By adjusting the position of the partition plate 24, the flow rate of the first oil guiding channel 22 is greater than the flow rate of the second oil guiding channel 23. The engine gear 14 rotates to stir the lubricating oil passing through the first oil guiding channel 22 to preferentially ensure the lubrication of the engine gear 14 and its bearings. For example, as Figure 8As shown, the partition plate 24 is arranged in a straight plate shape and is perpendicular to the groove 21. In the hybrid box, it is necessary to ensure that the oil suction volume of the oil chamber of the filter 16 is sufficient. The partition plate 24 is arranged close to the second end face 132 of the differential gear, so that the width of the oil inlet 221 of the first oil guiding channel 22 is smaller than the width of the oil inlet 231 of the second oil guiding channel 23. The lubricating oil stirred by the rotation of the differential gear 13 is divided into two parts through the first oil guiding channel 22 and the second oil guiding channel 23. Since the width of the oil inlet 221 of the first oil guiding channel 22 is smaller than the width of the oil inlet 231 of the second oil guiding channel 23, the flow rate of the first oil guiding channel 22 is smaller than that of the second oil guiding channel 23. By adjusting the position of the partition plate, the flow rate of the first oil guiding channel 22 is made smaller than that of the second oil guiding channel 23, so as to ensure that the oil suction volume of the oil chamber of the filter 16 is sufficient preferentially.

[0050] In some embodiments, the flow rate of the lubricating oil passing through the first oil guiding channel 22 is greater than the flow rate of the lubricating oil passing through the second oil guiding channel 23. Specifically, when the range extender hybrid box is in the range extender working mode, the engine gear 14 and its bearings are heated by friction during operation, so the lubrication of the engine gear 14 and its bearings should be ensured preferentially. For example, as Figures 9 to 10 shown, the lubricating oil stirred by the rotation of the differential gear 13 is divided into two parts through the first oil guiding channel 22 and the second oil guiding channel 23. The partition plate 24 is arranged in a curved shape and is perpendicular to the groove 21, so that the width of the oil inlet 221 of the first oil guiding channel 22 is greater than the width of the oil inlet 231 of the second oil guiding channel 23. The flow rate of the lubricating oil stirred by the rotation of the differential gear 13 leading to the first oil guiding channel 22 is greater than that of the second oil guiding channel 23, so as to ensure the cooling lubrication of the engine gear 14 and its bearings preferentially. The other part of the lubricating oil stirred by the rotation of the differential gear 13 leads to the second oil guiding channel 23 and then to the oil chamber of the filter 16. The oil guiding member 2 completes the entire oil guiding process, and realizes the distribution of the flow rate of the lubricating oil stirred by the rotation of the differential gear 13 to the first oil guiding channel 22 and the second oil guiding channel 23 by controlling the position of the partition plate 24.

[0051] In some implementation cases, such as Figure 11As shown, the oil guiding member 2 includes a left housing 25 and a right housing 26, and the left housing 25 and the right housing 26 are fixedly connected. For example, the left housing 25 and the right housing 26 are fixedly connected by welding. The welding strength is high, which can prevent the left housing 25 and the right housing 26 from separating when the lubricating oil agitated by the differential gear 13 and the engine gear 14 in the hybrid transmission case impacts the oil guiding member 2, resulting in the oil guiding member 2 detaching from the mounting bearing and damaging the hybrid transmission case. That is, the welding method is adopted to ensure the safety performance of the oil guiding member 2 during use. For example, the left housing 25 and the right housing 26 are integrally injection molded, which reduces the assembly time. Among them, the materials of the left housing 25 and the right housing 26 of the oil guiding member 2 can be selected as plastic or cast iron materials. Using engineering plastics is beneficial to reducing the vehicle weight and improving the energy utilization rate. Using cast iron materials can increase the strength of the left housing 25 and the right housing 26 and avoid the repeated impact force of the lubricating oil in the hybrid transmission case from damaging the left housing 25 and the right housing 26.

[0052] In some embodiments, such as Figures 12 to 13As shown, the left housing 25 is provided with a first cavity 251 with an opening on one side, and the right housing 26 is provided with a second cavity 261 with an opening on one side. The first cavity 251 and the second cavity 261 are in communication. The opening of the first cavity 251 and the opening of the second cavity 261 are oppositely arranged to form a third cavity 20, and at the same time, the third cavity 20 is in a sealed state. Specifically, one side of the left housing 25 is open, and the other side of the left housing 25 is a closed end to form the first cavity 251. One side of the right housing 26 is open, and the other side of the right housing 26 is a closed end to form the second cavity 261. After the left housing 25 and the right housing 26 are fully welded, the first cavity 251 and the second cavity 261 communicate to form the third cavity 20. Since the connection method of the left housing 25 and the right housing 26 is full welding, that is, all the contact positions of the left housing 25 and the right housing 26 are fusion welded, it is ensured that the third cavity 20 is in a sealed state to prevent lubricating oil from entering the third cavity 20. Since the clutch assembly 10 of the hybrid power box is located below the oil level line 3, after removing the clutch assembly 10 and designing the hybrid power box into an extended-range hybrid power box, under the same oil quantity state, the oil level of the extended-range hybrid power box decreases, resulting in poor lubrication of the engine gear 14 and its bearings. To solve the problem of the decrease in oil level, the volume of the oil guiding member 2 is set to be equal to the outer surface volume of the clutch assembly 10. After removing the clutch assembly 10 of the hybrid power box, the oil guiding member 2 is installed at the installation position of the clutch shaft to achieve the purpose of switching the hybrid power box to an extended-range hybrid power box. Among them, when the oil guiding member 2 is arranged in the third cavity 20 to ensure the oil holding function, the weight of the oil guiding member 2 is effectively reduced, the weight of the whole vehicle is reduced, and the energy utilization rate is improved. It should be noted that the extended-range hybrid power box of the present application is based on removing the clutch assembly 10 from the hybrid power box, and the oil guiding member 2 is installed on the installation bearing of the clutch shaft. The positions and structures of the differential gear 13, engine gear 14, drive motor gear 11, intermediate shaft gear 12, generator gear 15 and their connecting shafts and other parts in the hybrid power box remain unchanged, realizing the design scheme of switching the hybrid power box into an extended-range hybrid power box.

[0053] In some embodiments, such as Figures 14 to 15As shown in the figure, the right housing 26 is provided with an opening groove 262, and a limiting portion 17 adapted to the opening groove 262 is provided on the inner wall of the box body 1. The limiting portion 17 abuts against the opening groove 262 to limit the rotation of the oil guiding member 2. Specifically, an opening is formed on one side of the right housing 26 to form a second cavity 261, and an opening groove 262 is provided on the other side of the right housing 26. A limiting portion 17 adapted to the opening groove 262 is provided on the inner wall of the box body 1. For example, the limiting portion 17 is provided as a first limiting portion 171 and a second limiting portion 172. The first limiting portion 171 and the second limiting portion 172 are in a straight plate shape structure and are arranged at intervals on the inner wall of the box body 1. When the oil guiding member 2 is installed on the support bearing, the first limiting portion 171 and the second limiting portion 172 respectively abut against the two side surfaces of the opening groove 262 to limit the rotation of the oil guiding member 2 and prevent the first oil guiding channel 22 and the second oil guiding channel 23 from rotating with the oil guiding member, affecting the oil guiding effect. For example, the limiting portion 17 is provided as a block structure and is arranged on the inner wall of the box body 1. When the oil guiding member 2 is installed on the support bearing, the two side surfaces of the limiting portion 17 abut against the two side surfaces of the opening groove 262 to limit the rotation of the oil guiding member 2. The limiting portion 17 is provided as a block structure with high strength to avoid damage to the limiting portion 17 during the installation and disassembly of the oil guiding member 2.

[0054] In some embodiments, as Figure 5 and Figure 16 shown, the oil guiding member 2 is provided with an avoidance groove 252 for avoiding the differential gear 13. Specifically, the differential gear 13 is located above the oil guiding member 2. To avoid interference between the oil guiding member 2 and the rotation of the differential gear 13, resulting in damage to the oil guiding member 2 and the differential gear 13. An avoidance groove 252 is provided on the oil guiding member 2, and a preset safety distance is provided between the avoidance groove 252 and the differential gear 13, so that the differential gear 13 and the avoidance groove 252 are arranged at intervals. It should be noted that when the preset safety distance is smaller and it is ensured that the differential gear 13 and the avoidance groove 252 are arranged at intervals, the amount of oil stirred by the rotation of the differential gear 13 flowing out from the avoidance groove 252 is smaller, and the amount of oil stirred by the rotation of the differential gear 13 flows out more from the first oil guiding channel 22 and the second oil guiding channel 23, ensuring sufficient lubrication of the engine gear 14 and its bearings and sufficient oil absorption of the filter 16.

[0055] In some embodiments, as Figure 11 、 Figure 14 and Figure 16 shown, the oil guiding member 2 is provided with two support surfaces, and the two support surfaces are respectively located on both sides of the oil guiding member 2 along the first direction. The two support surfaces are used to install the oil guiding member 2. Specifically, the range extender hybrid box of the present application is obtained by removing the clutch assembly 10 from the series-parallel hybrid box, installing the oil guiding member 2 on two support bearings, and retaining the installation bearings of the clutch assembly 10, realizing the technical solution of designing the series-parallel hybrid box into a range extender hybrid box. For example, two support surfaces are provided on both sides of the oil guiding member 2 in the first direction. The first direction isFigure 11 In the direction of the dashed line, the two supporting surfaces include a first supporting surface 253 and a second supporting surface 263. The two supporting surfaces are installed on two supporting bearings, and the oil guiding member 2 is installed in the range extender hybrid box. Among them, there is no need to redesign the bearing installation holes and select bearings, which reduces the design cost and speeds up the R & D progress.

[0056] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions required to be protected by the present application.

Claims

1. An oil guiding device for a range extender hybrid transmission, characterized in that, Comprising: A box body, provided with a gear cavity for accommodating a gear shaft system, the gear shaft system including a differential shaft and an engine shaft, wherein one end of the differential shaft is installed with a differential gear, and one end of the engine shaft is installed with an engine gear; and An oil guiding member, arranged in the gear cavity, the oil guiding member being provided with a first oil guiding channel, the differential gear rotating to stir the lubricating oil to flow through the first oil guiding channel to the side wall of the engine gear; the oil guiding device further includes a filter, the oil guiding member is further provided with a second oil guiding channel, the differential gear rotating to stir the lubricating oil to flow through the second oil guiding channel to the filter; the oil guiding member includes a groove and a partition plate, the outer side of the oil guiding member has a groove, and the partition plate is located in the groove to divide the groove into the first oil guiding channel and the second oil guiding channel.

2. The oil guiding device according to claim 1, characterized in that, The flow rate of the lubricating oil passing through the first oil guiding channel is greater than the flow rate of the lubricating oil passing through the second oil guiding channel.

3. The oil guiding device according to claim 1, wherein The oil guiding member includes a left shell and a right shell, and the left shell and the right shell are fixedly connected.

4. The oil guiding device according to claim 3, characterized in that, The left shell is provided with a first cavity with an opening on one side, the right shell is provided with a second cavity with an opening on one side, the first cavity and the second cavity are communicated, and the openings of the first cavity and the second cavity are arranged opposite to each other to form a third cavity.

5. The oil guiding device according to claim 4, characterized in that, The third cavity is in a sealed state.

6. The oil guiding device according to claim 3, characterized in that The right shell is provided with an opening groove, and a limiting portion adapted to the opening groove is provided on the inner wall of the box body, and the limiting portion abuts against the opening groove to limit the rotation of the oil guiding member.

7. The oil guiding device according to claim 1, characterized in that The oil guiding member is provided with an avoidance groove, and the avoidance groove is used to avoid the differential gear.

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