Oil baffle plate for hybrid transmission, hybrid transmission and vehicle

Abstract

This application provides an oil baffle plate for a hybrid transmission, a hybrid transmission, and a vehicle, wherein the oil baffle plate for the hybrid transmission includes an oil baffle plate body and a connecting portion, the oil baffle plate body being an arc-shaped plate used to surround the gear-driven gear of the hybrid transmission, and the connecting portion being connected to the oil baffle plate body and used to fix the oil baffle plate to the transmission housing of the hybrid transmission. The oil baffle plate for the hybrid transmission provided by this application can shield and guide the oil from the oil agitation motion of the gear teeth of the output shaft inside the transmission, shorten the path of oil splashing, reduce the air bubble content of the oil, and improve the transmission efficiency of the transmission.

Description

Technical Field

[0001] This application relates to the technical field of transmission parts, specifically to the oil baffle plate of a hybrid transmission, a hybrid transmission, and a vehicle.

Background Art

[0002] A hybrid vehicle combines two power sources, an engine and a motor, through a power coupling device to provide power to the vehicle. Among them, the hybrid transmission is an important component to achieve power coupling.

[0003] The hybrid transmission contains oil for lubricating moving parts such as the output shaft and differential device in the transmission. When the hybrid vehicle is running at high speed, the output shaft and differential device of the hybrid transmission rotate at high speed in the oil, causing a stirring effect on the oil, and the oil scatters inside the transmission housing. This oil stirring phenomenon not only increases the oil temperature of the transmission but also generates a large number of bubbles. Due to the compressibility of the bubbles in the oil, pressure fluctuations and oil pressure drops in the hydraulic system are likely to occur, and at the same time, the oil stirring loss is increased, that is, the transmission efficiency of mechanical parts is reduced.

Summary of the Invention

[0004] The purpose of this application is to provide an oil baffle plate for a hybrid transmission, a hybrid transmission, and a vehicle.

[0005] To achieve the above object, the technical solution adopted in this application is as follows.

[0006] A first embodiment of the present invention provides an oil baffle plate for a hybrid transmission, the oil baffle plate comprising an oil baffle plate body and a connecting portion, the oil baffle plate body being an arc-shaped plate used to surround a portion of the gear drive gear of the hybrid transmission, and the connecting portion being connected to the oil baffle plate body and used to fix the oil baffle plate to the transmission housing of the hybrid transmission.

[0007] Selectively, the connection portion includes a first mounting foot and a second mounting foot, the first mounting foot having a first mounting hole at the end away from the oil baffle plate body, the second mounting foot having a second mounting hole at the end away from the oil baffle plate body, and the oil baffle plate is fixedly connected to the transmission housing by a first fastening member passing through the first mounting hole and a second fastening member passing through the second mounting hole.

[0008] Selectively, the oil baffle plate body has a first side wall and a second side wall, the first side wall and the second side wall facing each other in the axial direction of the oil baffle plate body, the axial direction being the direction in which the central axis of the oil baffle plate body extends, the oil baffle plate further includes an oil baffle plate extension, one side of the oil baffle plate extension is connected to a part of the first side wall, the other side of the oil baffle plate extension extends in a direction away from the second side wall along the axial direction of the oil baffle plate body, and the orthogonal projection of the oil baffle plate extension onto a setting plane partially overlaps with the orthogonal projection of the oil baffle plate body onto the setting plane.

[0009] Selectively, the first side wall includes a first portion and a second portion connected along the circumferential direction of the oil baffle plate body, wherein the first portion is connected to the oil baffle plate extension, and a portion of the oil baffle plate extension is located on one side of the first portion away from the second portion, the second portion is connected to the first mounting foot, and the end of the first mounting foot extends away from the inner surface of the oil baffle plate body, and the second mounting foot is connected to the second side wall, and the end of the second mounting foot extends away from the inner surface of the oil baffle plate body.

[0010] Selectively, the inner surface of the oil baffle plate body is a smooth arc-shaped plate surface, and / or the extended portion of the oil baffle plate is an arc-shaped plate, and the inner surface of the extended portion of the oil baffle plate body is a smooth arc-shaped plate surface.

[0011] Selectively, the oil baffle plate body includes a first plate and a second plate connected axially to the oil baffle plate body, the first plate being connected to the oil baffle plate extension, the second plate being located on one side of the first plate away from the oil baffle plate extension, and both the surface of the first plate and the surface of the second plate being curved. ,above In the thickness direction of the oil baffle plate body, the first plate is closer to the central axis of the oil baffle plate body than the second plate.

[0012] Selectively, the oil baffle plate extension includes a third plate and a fourth plate connected in the axial direction to the oil baffle plate extension, the third plate being connected to the oil baffle plate body, the fourth plate being located on one side of the third plate away from the oil baffle plate body, the plate surfaces of the third plate and the fourth plate being curved surfaces, the axial direction of the oil baffle plate extension being the direction of extension of the central axis of the oil baffle plate extension, and in the thickness direction of the oil baffle plate extension being closer to the central axis of the oil baffle plate extension than the fourth plate.

[0013] A second aspect of the present invention provides an oil baffle plate for a hybrid transmission, wherein a differential and an output shaft are installed at the bottom of the transmission housing, the output shaft being located in front of the differential and meshing with the differential gear and the power output gear at the end of the output shaft, an input shaft being located in front of and above the output shaft and meshing with the input gear on the input shaft and the gear drive gear on the output shaft, the input shaft being rotationally driven by torque provided by the engine and / or motor, and the oil baffle plate, fixedly connected to the transmission housing, is positioned to surround the power input gear on the output shaft at a spaced distance in front of and below.

[0014] Selectively, the axial extension of the oil baffle plate extends to a position in front of and below the differential and is positioned to surround the area below the power output gear of the output shaft.

[0015] Selectively, the gear shift drive gears on the output shaft include a second-speed drive gear, a first-speed drive gear, and a third-speed drive gear arranged in close proximity in order, with the second-speed drive gear being closest to the power output gear on the output shaft, and the main body of the oil baffle plate is positioned to surround the front and lower positions of the first-speed drive gear and the second-speed drive gear.

[0016] Selectively, one surface of the oil baffle plate body and the oil baffle plate extension facing the output shaft and / or differential gear is a smooth, arc-shaped plate surface.

[0017] Selectively, a mechanical oil pump fixedly connected to the transmission housing is positioned in front of the oil baffle plate, the upper edge of the extended portion of the oil baffle plate is lower than the upper edge of the main body of the oil baffle plate, and there is a first mounting foot extending forward at the stepped transition edge between the upper edge of the extended portion of the oil baffle plate and the upper edge of the main body of the oil baffle plate, and the main body of the oil baffle plate right The edge has a second mounting leg that extends forward, and the oil baffle plate is fixedly connected to the mechanical oil pump by bolts through mounting holes located at the ends of the first and second mounting legs, respectively.

[0018] Selectively, the oil baffle plate body is positioned in front of the second-speed driven gear and surrounding a first stepped plate that is close to the output shaft.

[0019] Selectively, the extended portion of the oil baffle plate left A second stepped plate is provided on the edge, positioned away from the differential gear.

[0020] A third embodiment of the present invention provides a hybrid transmission comprising a transmission housing, an output shaft, a differential, an input shaft, and an oil baffle plate, wherein the output shaft and the differential are located at the bottom of the transmission housing, the output shaft is located in front of the differential, the output shaft is fitted with an output shaft power output gear and a gear drive gear, the output shaft power output gear is located at the end of the output shaft, the differential is fitted with a differential gear which meshes with the output shaft power output gear, the input shaft is located in front and above the output shaft and is rotationally driven by torque supplied from an engine and / or motor, the input shaft is fitted with an input gear which meshes with a gear drive gear, the oil baffle plate is fixedly connected to the transmission housing, the oil baffle plate is positioned to surround the front and lower position of the gear drive gear and is installed at a distance from the gear drive gear.

[0021] Selectively, the oil baffle plate includes an oil baffle plate body and a connecting portion, the oil baffle plate body being an arc-shaped plate and positioned to surround the gear shift driven gear, and the connecting portion being connected to the oil baffle plate body and fixedly connected to the transmission housing.

[0022] Selectively, the gear shift drive gears include a second-speed drive gear, a first-speed drive gear, and a third-speed drive gear arranged in close proximity and spaced apart in order, with the second-speed drive gear being closest to the power output gear of the output shaft, and the oil baffle plate body being positioned to surround the front-downward position of the first-speed drive gear and the second-speed drive gear.

[0023] Selectively, the connection portion includes a first mounting foot and a second mounting foot, the first mounting foot having a first mounting hole at the end away from the oil baffle plate body, the second mounting foot having a second mounting hole at the end away from the oil baffle plate body, and the oil baffle plate is fixedly connected to the transmission housing by a first fastening member passing through the first mounting hole and a second fastening member passing through the second mounting hole.

[0024] Selectively, the hybrid transmission includes a mechanical oil pump, the mechanical oil pump is positioned in front of the oil baffle plate, the transmission housing includes a main casing and an oil pump housing for the mechanical oil pump, the oil pump housing is fixedly connected to the main casing, and the oil baffle plate is fixedly connected to the oil pump housing by a first fastener passing through a first mounting hole and a second fastener passing through a second mounting hole.

[0025] Optionally, the oil baffle plate body has a first side wall and a second side wall. The first side wall and the second side wall face each other in the axial direction of the oil baffle plate body. The axial direction is the extending direction of the central axis of the oil baffle plate body. The oil baffle plate further includes an oil baffle plate extending portion. One side of the oil baffle plate extending portion is connected to a part of the first side wall. The other side of the oil baffle plate extending portion extends along the axial direction of the oil baffle plate body in a direction away from the second side wall to a position in front of and below the differential gear, and is arranged to surround the power output gear of the output shaft. The oil baffle plate extending portion is spaced from the power output gear of the output shaft, and the orthographic projection of the oil baffle plate extending portion on the set plane partially overlaps the orthographic projection of the oil baffle plate body on the set plane. The setting plane is perpendicular to the axial direction of the oil baffle plate body. It overlaps.

[0026] Optionally, the first side wall includes a first part and a second part connected along the circumferential direction of the oil baffle plate body. The first part is connected to the oil baffle plate extending portion, and a part of the oil baffle plate extending portion is located on a side away from the second part of the first part. The second part is connected to the first mounting foot, and the end of the first mounting foot extends in a direction away from the inner surface of the oil baffle plate body. The second mounting foot is connected to the second side wall, and the end of the second mounting foot extends in a direction away from the inner surface of the oil baffle plate body.

[0027] Optionally, the inner surface of the oil baffle plate body facing the output shaft and / or the differential gear is a smooth arc-shaped plate surface, and / or the oil baffle plate extending portion is an arc-shaped plate. The inner surface of the oil baffle plate extending portion facing the output shaft and / or the differential gear is a smooth arc-shaped plate surface.

[0028] Optionally, the oil baffle plate body includes a first plate body and a second plate body connected in the axial direction of the oil baffle plate body. The first plate body is connected to the oil baffle plate extension portion, and the second plate body is located on one side away from the oil baffle plate extension portion of the first plate body. The plate surfaces of both the first plate body and the second plate body are arc surfaces. ,above In the plate thickness direction of the oil baffle plate body, the first plate body is closer to the central axis of the oil baffle plate body than the second plate body.

[0029] Optionally, the first plate body is arranged to surround the front of the two-speed driven gear, and the first plate body is closer to the central axis of the output shaft than the first plate body and the second plate body.

[0030] Optionally, the oil baffle plate extension portion includes a third plate body and a fourth plate body connected in the axial direction of the oil baffle plate extension portion. The third plate body is connected to the oil baffle plate body, and the fourth plate body is located on one side away from the oil baffle plate body of the third plate body. The plate surfaces of both the third plate body and the fourth plate body are arc surfaces. The axial direction of the oil baffle plate extension portion is the extension direction of the central axis of the oil baffle plate extension portion. In the plate thickness direction of the oil baffle plate extension portion, the third plate body is closer to the central axis of the oil baffle plate extension portion than the fourth plate body.

[0031] Optionally, the third plate body is arranged to surround the lower part of the power output gear of the output shaft, and the third plate body is farther away from the differential gear than the fourth plate body.

[0032] The fourth aspect of the present application provides a vehicle. The vehicle includes the oil baffle plate described in the first aspect or the second aspect, or the vehicle includes the hybrid transmission described in the third aspect.

Brief Description of the Drawings

[0033] To more clearly explain the technical concept in the embodiments of this application, the drawings necessary for describing the embodiments are briefly introduced below. Clearly, the drawings in the following description are only a few embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

[0034] [Figure 1] This is a schematic diagram of the internal structure of a hybrid transmission in related technologies. [Figure 2] This is a schematic diagram of the structure of the oil baffle plate provided by the embodiment of the present invention. [Figure 3] This is an isometric projection view of an oil baffle plate provided according to an embodiment of the present application. [Figure 4] This is an isometric projection view of the interior of a hybrid transmission provided by an embodiment of the present invention. [Figure 5] This is an isometric projection view of the inside of a hybrid transmission, excluding the mechanical oil pump, provided by the embodiment of the present invention. [Figure 6] This is a schematic diagram showing the positional relationship between the oil baffle plate and each gear provided in the embodiment of the present invention. [Figure 7] A front view of the oil baffle plate and each gear, as seen from the driver's perspective.

[0035] The drawings above clearly illustrate embodiments of the present application, which are described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but rather to explain the concept of the present application to those skilled in the art by referring to specific embodiments. [Modes for carrying out the invention]

[0036] The technical inventions described below will be clearly and completely explained in accordance with the drawings of the embodiments of this application. However, it is clear that the embodiments described are only a selection of embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments that can be obtained without creative work by a person skilled in the art fall within the scope of protection of this application.

[0037] In the description of this application, the directions or positional relationships indicated by terms such as "center," "up," "down," "left," "right," "front," "rear," "inside," and "outside" are directions or positional relationships shown based on the drawings, or directions or positional relationships after the corresponding structure has been attached to the vehicle. These terms are merely for the purpose of describing and simplifying the description of this application, and do not indicate or imply that the referred device or element must necessarily have a specific direction, be composed of, or be operated in a specific direction. Therefore, they should not be understood as limiting this application. Furthermore, the terms "first," "second," and "third" are merely for the purpose of describing the objective and should not be understood as indicating or implying relative importance.

[0038] Furthermore, the technical features of the different embodiments of the present application described below can be combined with each other, insofar as they do not contradict each other.

[0039] Figure 1 shows a general structure of a hybrid transmission in related technologies in this field. As shown in Figure 1, the transmission is powered by two motors, of which the transmission housing 20 has a motor mounting position 21 located inside the transmission housing 20, which is located at the top of the transmission housing 20, and a first motor (not shown) may be located at the motor mounting position 21, which can drive an output shaft 30 located at the bottom center of the transmission housing 20, which transmits power to a differential 40 through the meshing of gears, thereby driving the vehicle, and an input shaft 50 is located above the output shaft 30, in which an engine crankshaft (not shown) and a second motor (not shown) are connected in series and together connected to the input shaft 50 to provide power, which is transmitted to the differential 40 via gears and similarly used to drive the vehicle.

[0040] When a hybrid vehicle is stationary, the oil in the hybrid transmission shown in Figure 1 remains still, with its oil level positioned above the central axis of the output shaft 30. When the hybrid vehicle is traveling at high speed, the output shaft 30 and differential 40 of the hybrid transmission rotate at high speed in the oil. At this time, the shaft teeth on the output shaft 30 and the gear teeth of the differential 40 rapidly agitate the oil, causing it to splatter within the transmission housing 20. This agitation phenomenon increases the oil temperature in the hybrid transmission and generates a large number of bubbles. The compressibility of these bubbles in the oil makes it easier for pressure fluctuations and drops in the hydraulic system to occur, simultaneously increasing oil agitation losses and leading to a decrease in the transmission efficiency of the mechanical parts.

[0041] To solve the above problems, an embodiment of the present invention further provides an oil baffle plate for a hybrid transmission, the structure of which is shown in Figures 2 and 3. Referring to Figure 2, the oil baffle plate 10 includes an oil baffle plate body 11 and a connecting portion 12, the oil baffle plate body 11 being an arc-shaped plate used to surround the gear drive gear 32 of the hybrid transmission, and the connecting portion 12 being connected to the oil baffle plate body 11 and used to fix the oil baffle plate 10 to the transmission housing 20 of the hybrid transmission.

[0042] By analyzing the oil agitation status of each gear during vehicle operation, the inventors found that the oil inside the transmission housing 20 is agitated mainly by the gear stage driven gear 32 and differential gear 41 on the output shaft 30, and that the output shaft 30 is located in the middle of the bottom of the transmission housing 20, the front of the differential gear 41 is shielded by the gear on the output shaft 30, and the other side of the differential gear 41 is arranged to surround the transmission housing 20 in close proximity, and therefore the differential gear 41 in a hybrid transmission has a limited oil agitation effect, and the oil agitation operation is mainly caused by the gear stage driven gear 32 on the output shaft 30.

[0043] Accordingly, in the embodiment of the present invention, the oil baffle plate 10 is fixed to the transmission housing 20 and arranged to surround the gear drive gear 32. As a result, when the gear drive gear 32 on the output shaft 30 generates oil agitation during vehicle operation and splashes oil forward, the oil baffle plate 10, which is arranged to surround the gear drive gear 32, can form a shield in the parabolic direction of the splashed oil. By causing all the oil to adhere to the inner surface of the oil baffle plate 10, the splash distance is shortened, and the inner surface of the oil baffle plate 10 guides the oil adhering to the oil baffle plate 10 into the transmission, thereby lubricating each component in the transmission with oil, while simultaneously reducing the generation of air bubbles, reducing oil agitation loss, and improving the transmission efficiency of the mechanical parts.

[0044] For the purposes of this invention, in the embodiments, "front" refers to the direction closer to the front of the vehicle, and "rear" refers to the direction closer to the rear of the vehicle.

[0045] In some embodiments, as shown in Figures 2 and 6, the connection portion 12 includes a first mounting leg 121 and a second mounting leg 122, with a first mounting hole 1211 provided at the end of the first mounting leg 121 away from the oil baffle plate body 11, and a second mounting hole 1221 provided at the end of the second mounting leg 122 away from the oil baffle plate body 11, and the oil baffle plate 10 is fixedly connected to the transmission housing 20 by a first fastening member (not shown) passing through the first mounting hole 1211 and a second fastening member (not shown) passing through the second mounting leg 1221.

[0046] The connection portion 12 and the transmission housing 20 are connected by fastening members, thereby fixing the oil baffle plate 10 on the transmission housing 20. Of these, the first mounting leg 121 and the second mounting leg 122 are both bent and installed relative to the oil baffle plate body 11. On the one hand, this allows for easy assembly of the oil baffle plate 10, and on the other hand, it prevents the connection point of the connection portion 12 with the transmission housing 20 from coming into contact with the oil inside the transmission, thereby preventing the connection point from being corroded by the oil.

[0047] In some embodiments, as shown in Figure 3, the first mounting leg 121 and the second mounting leg 122 are not directly opposite each other, but are offset from each other on both sides of the oil baffle plate body 11. This facilitates assembly and simultaneously avoids localized stress concentration on the oil baffle plate body 11.

[0048] Exemplary, the first fastening member may be a screw or a bolt, and the second fastening member may be a screw or a bolt. Optionally, the connection 12 may be fixed to the mechanical oil pump 60, which is fixed to the transmission housing 20, i.e., the oil pump housing (not shown) of the mechanical oil pump 60 is part of the transmission housing 20.

[0049] In some embodiments, as shown in Figure 3, the oil baffle plate body 11 has a first side wall 111 and a second side wall 112, and the first side wall 111 and the second side wall 112 face each other in the axial direction of the oil baffle plate body 11.

[0050] To explain further, the oil baffle plate body 11 is an arc-shaped plate, and both the inner and outer surfaces of the arc-shaped plate are arc-shaped surfaces, and the inner and outer surfaces share a common central axis, which is specifically the straight line where the center of the circle on which each arc line constituting the arc surface is located is located. Therefore, the axial direction of the oil baffle plate body 11 refers to the direction in which the central axis of the oil baffle plate body 11 extends.

[0051] As shown in Figure 3, the first side wall 111 includes a first portion 1111 and a second portion 1112 connected along the circumferential direction of the oil baffle plate body 11, of which the first portion 1111 is connected to the oil baffle plate extension 13, and a portion of the oil baffle plate extension 13 is located on one side of the first portion 1111 away from the second portion 1112.

[0052] The oil baffle plate 10 further includes an oil baffle plate extension 13, one side of which is connected to a first portion 1111 of the first side wall 111, and the other side of which extends away from the second side wall 112 along the axial direction of the oil baffle plate body 11. The orthographic projection of the oil baffle plate extension 13 onto a setting plane partially overlaps with the orthographic projection of the oil baffle plate body 11 onto a setting plane, the setting plane being perpendicular to the axial direction of the oil baffle plate body 11.

[0053] "Partially overlapping" means that the orthogonal projection of a portion of the oil baffle plate extension 13 onto the setting plane overlaps with the orthogonal projection of the oil baffle plate body 11 onto the setting plane, while the orthogonal projection of another portion of the oil baffle plate extension 13 onto the setting plane lies outside the orthogonal projection of the oil baffle plate body 11 onto the setting plane.

[0054] As shown in Figure 3, in the side wall of the oil baffle plate body 11 adjacent to the oil baffle plate extension portion 13, only a portion of the side wall is connected to the first portion 1111 of the first side wall 111 of the oil baffle plate body 11, while another portion of the side wall of the oil baffle plate extension portion 13 is installed in a suspended state and is not connected to or in contact with the oil baffle plate body 11. Therefore, as shown in Figure 6, after the oil baffle plate 10 is attached to the transmission housing 20, at least a portion of the oil baffle plate extension portion 13 can extend below the output shaft 30, thereby shielding oil that splashes downward from the meshing portion between the gear 41 of the differential 40 and the power output gear 31 of the output shaft 30, and effectively guiding the oil from the meshing portion to flow forward and upward along the inner surface of the oil baffle plate extension portion 13, thereby avoiding collisions between the oil and the irregular inner wall surface of the transmission housing and reducing the generation of bubbles.

[0055] The second portion 1112 of the first side wall 111 of the oil baffle plate body 11 is connected to the first mounting foot 121, and the end of the first mounting foot 121 extends away from the inner surface of the oil baffle plate body 11, and the second side wall 112 of the oil baffle plate body 11 is connected to the second mounting foot 122, and the end of the second mounting foot 122 extends away from the inner surface of the oil baffle plate body 11. feet It is installed away from the output shaft 30 to avoid affecting the rotation of the output shaft 30, while also facilitating its attachment to the transmission housing 20.

[0056] Selectively, the inner surface of the oil baffle plate body 11 is a smooth, curved plate surface.

[0057] Selectively, the oil baffle plate extension portion 13 is also an arc-shaped plate, and the inner surface of the oil baffle plate extension portion 13 is a smooth arc-shaped plate surface.

[0058] Therefore, after the oil is scattered onto the inner surface of the oil baffle plate body 11 or the inner surface of the oil baffle plate extension 13, the oil flows along the inner surface of the oil baffle plate body 11 or the inner surface of the oil baffle plate extension 13, making it less likely to get caught on the oil baffle plate 10, thus reducing oil loss.

[0059] In some embodiments of the present application, as shown in Figures 2 and 3, the oil baffle plate body 11 includes a first plate 113 and a second plate 114 connected in the axial direction of the oil baffle plate 11, the first plate 113 being connected to the oil baffle plate extension 13, and the second plate 114 being located on one side of the first plate 113 away from the oil baffle plate extension 13. As shown in Figures 4 and 6, the plate surfaces of the first plate 113 and the second plate 114 are both curved surfaces.

[0060] Furthermore, as shown in Figures 2 and 6, in the thickness direction of the oil baffle plate body 11, the first plate 113 is closer to the central axis of the oil baffle plate body 11 than the second plate 114. After fixing the oil baffle plate 10 to the transmission housing 20, as shown in Figure 6, the first plate 113 is positioned to surround the outside of the gear with a relatively small diameter in the gear stage driven gear 32, and the second plate 114 is positioned to surround the outside of the gear with a relatively small diameter in the gear stage driven gear 32. big The gear is positioned to surround the outside of the gear, and therefore the distance over which oil splashes at each position of the gear shift driven gear 32 can be shortened.

[0061] As shown in Figure 2, the oil baffle plate extension 13 includes a third plate 131 and a fourth plate 132 connected in the axial direction of the oil baffle plate extension 13, the third plate 131 being connected to the oil baffle plate body 11 and the fourth plate 132 being located on one side of the third plate 131 away from the oil baffle plate body 11, the axial direction of the oil baffle plate extension 13 being the direction of extension of the central axis of the oil baffle plate extension 13. As shown in Figure 6, both the surface of the third plate 131 and the surface of the fourth plate 132 are curved surfaces, and the surfaces of the third plate 131 and the fourth plate 132 share a common central axis. Specifically, this central axis is the straight line where the center of the circle on which each arc line constituting the circular arc surface is located is situated. Therefore, the axial direction of the oil baffle plate extension 13 refers to the direction of extension of the central axis of the oil baffle plate extension 13.

[0062] In some embodiments, the central axis of the oil baffle plate body 11 and the central axis of the oil baffle plate extension 13 coincide. In some of these embodiments, as shown in Figures 2 and 6, in the thickness direction of the oil baffle plate extension 13, the third plate 131 is closer to the central axis of the oil baffle plate extension 13 than the fourth plate 132. After fixing the oil baffle plate 10 to the transmission housing 20, as shown in Figure 6, the third plate 131 is positioned to surround the outside of the power output gear 31 of the output shaft 30, and the fourth plate 132 avoids the inner wall of the transmission housing 20.

[0063] Selectively, as shown in Figure 3, the oil baffle plate body 11 and the oil baffle plate extension 13 are integrally molded structures, of which the inner surfaces of the first plate 113 and the third plate 131 are set by a common curved surface, and the first mounting leg 121 and the second mounting leg 122 are formed by cutting out and bending a portion of a sheet metal used to manufacture the oil baffle plate 10.

[0064] An embodiment of the present invention further provides an oil baffle plate for a hybrid transmission, the structure of which is shown in Figures 2 to 7. Referring to Figures 2 to 7, a differential 40 and an output shaft 30 are located at the bottom of the transmission housing 20, the output shaft 30 is located in front of the differential 40 and meshes with the differential gear 41 and the output shaft output gear 31 at the end of the output shaft 30, an input shaft 50 is located in front of the output shaft 30 and meshes with the input gear 51 on the input shaft 50 and the gear drive gear 32 on the output shaft 30, the input shaft 50 is rotationally driven by torque provided by the engine and / or motor, and the oil baffle plate 10 fixedly connected to the transmission housing 20 is located on the output shaft 3 0 above The oil baffle plate 10 is positioned in front of and below the gear shift driven gear 32, with a gap between them. "Positioned in a gap to surround" means that the oil baffle plate 10 is positioned to surround at least a part of the gear shift driven gear 32, and that there is a gap between the oil baffle plate 10 and the gear shift driven gear 32.

[0065] In one example, an engine (not shown) is connected in series with a second motor (not shown) via a clutch (not shown) and both are connected to an input shaft 50, thereby enabling the transmission of power output from both the engine and the second motor to the input shaft 50. Subsequently, the input shaft 50 transmits power to the output shaft 30 through the meshing of gears, or the first motor (not shown) may also transmit power directly to the output shaft 30. Finally, the output shaft 30 transmits power to the wheel end through the meshing of a power output gear 31 and a differential gear 41 at its end. During the gear transmission process, the oil inside the transmission housing 20 is agitated by the gear stage driven gear 32 and differential gear 41 on the output shaft 30. However, the output shaft 30 is located in the middle of the bottom of the transmission housing 20, the front of the differential gear 41 is shielded by the gear on the output shaft 30, and the other side of the differential gear 41 is positioned to surround the transmission housing 20 in close proximity. Therefore, in a hybrid-specific machine, the oil agitation effect of the differential gear 41 is limited, and the oil agitation operation is mainly carried out by the gear stage driven gear 32 on the output shaft 30. As shown in Figures 4 and 5, when the vehicle moves forward, the differential gear 41 rotates counterclockwise in the figures, and the power output gear 31 on the output shaft 30 meshes with the differential gear 41 outward. The output shaft 30 rotates clockwise, and oil is scattered forward by the shaft teeth below the output shaft 30. Therefore, the oil baffle plate 10 is positioned in front of and below the gear drive gear 32 on the output shaft 30, which may directly block the parabolic direction of the oil scattering, most efficiently shortening the oil scattering path, and the blocked oil flows along the surface of the oil baffle plate, resulting in better oil guidance. This lubricates each component in the transmission with oil while simultaneously reducing the generation of air bubbles.

[0066] To reduce the oil agitation effect of the differential gear 41, the axial oil baffle plate extension 13 of the oil baffle plate 10 extends to a position in front of and below the differential gear 41 and is positioned to surround the area below the power output gear 31 of the output shaft. In the above configuration, since the differential gear 41 and the power output gear 31 of the output shaft on the output shaft 30 mesh outwards and are driven together, oil between them is scattered below the meshing area. By positioning the oil baffle plate extension 13, the oil can be effectively guided to flow forward and upward along the inner surface (i.e., inner surface) of the oil baffle plate extension 13. This prevents the oil from colliding with the irregular inner wall surface of the transmission housing 20 and reduces the generation of air bubbles.

[0067] The gear shift drive gears 32 on the output shaft 30 include a second-speed drive gear 322, a first-speed drive gear 321, and a third-speed drive gear 323, which are arranged in close proximity and spaced apart in order, with the second-speed drive gear 322 being closest to the power output gear 31 of the output shaft, and the main body portion of the oil baffle plate 10 (i.e., the oil baffle plate body 11) is positioned to surround the first-speed drive gear 321 and the second-speed drive gear 322 in front of and below them. One surface of the oil baffle plate body 11 and the oil baffle plate extension portion 13 facing the output shaft 30 and / or the differential gear 41 is a smooth, arc-shaped plate surface.

[0068] In the above solution, the oil agitation effect is maximized by the first-speed driven gear 321 and the second-speed driven gear 322 on the output shaft 30. However, the third-speed driven gear 323 is located furthest inward on the output shaft 30, and its front is close to the inner wall of the transmission housing 20, resulting in relatively high resistance to oil agitation. Therefore, by positioning the oil baffle plate body 11 in front of and below the first-speed driven gear 321 and the second-speed driven gear 322, the limited space inside the transmission can be utilized to its fullest extent. One side of the oil baffle plate 10 facing the output shaft 30 is a smooth, arc-shaped plate surface, which can adapt to the parabolic path of oil splashes, improving oil shielding efficiency and reducing the possibility of bubble formation.

[0069] To facilitate the fixing and installation of the oil baffle plate 10, a mechanical oil pump 60 fixedly connected to the transmission housing 20 is positioned in front of the oil baffle plate 10, the upper edge of the oil baffle plate extension portion 13 is lower than the upper edge of the oil baffle plate body 11, and a first mounting foot 121 extending forward is provided at the stepped transition edge between the upper edge of the oil baffle plate extension portion 13 and the upper edge of the oil baffle plate body 11, and the oil baffle plate body 11 right The edge has a second mounting leg 122 that extends forward, and the oil baffle plate 10 is bolted to the mechanical oil pump 60 via a first mounting hole 1211 located at the end of the first mounting leg 121 and a second mounting hole 1221 located at the end of the second mounting leg 122. In the above configuration, the upper edge of the oil baffle plate extension portion 13 is lower than the upper edge of the oil baffle plate body 11, that is, the space above the oil baffle plate extension portion 13 is used for the movement mechanism (not shown) of the C2C3 clutch, and Other related This is to avoid fixed parts (not shown). Because the mechanical oil pump 60 is located in front of the 3-speed driven gear 323, the outer wall surface of the mechanical oil pump 60 also acts as an oil baffle, reducing the covering area of ​​the oil baffle plate 10. The oil baffle plate 10 is bolted to the mechanical oil pump 60 via the first mounting foot 121 and the second mounting foot 122, which provides the same fixing effect as a configuration in which the oil baffle plate 10 is bolted to the transmission housing 20, while making the placement and installation of the oil baffle plate 10 easier and saving manufacturing materials.

[0070] The oil baffle plate body 11 is positioned to surround the second-speed driven gear 322 in front of it and includes a first stepped plate close to the output shaft 30, and is also called the first plate body 113. leftThe edge has a second stepped plate positioned away from the differential gear 41, also referred to as a fourth plate 132. In the above solution, the design of the second stepped plate allows it to avoid the inner wall of the transmission housing 20, the diameter of the second-speed driven gear 322 is smaller than the diameter of the first-speed driven gear 321, the first stepped plate allows the oil baffle plate 10 to be closer to the second-speed driven gear 322, further shortens the oil splash path and reduces the generation of bubbles.

[0071] Embodiments of the present invention further provide a hybrid transmission, as shown in Figures 4 to 7, which includes a transmission housing 20, an output shaft 30, a differential 40, an input shaft 50, and an oil baffle plate 10, wherein the output shaft 30 and the differential 40 are located at the bottom of the transmission housing 20, and the output shaft 30 is located in front of the differential 40, and the output shaft 30 is fitted with an output shaft power output gear 31 and a gear drive gear 32, the output shaft power output gear 31 is located at the end of the output shaft 30, and the differential 40 is fitted with a differential A gear 41 is installed, and the differential gear 41 meshes with the power output gear 31 on the output shaft. The input shaft 50 is located in front of and above the output shaft 30 and is rotationally driven by torque provided by the engine and / or motor. An input gear 51 is installed on the input shaft 50, and the input gear 51 meshes with the gear stage driven gear 32. An oil baffle plate 10 is fixedly connected to the transmission housing 20, and the oil baffle plate 10 is positioned to surround the gear stage driven gear 32 in a position in front of and below it, and is installed at a distance from the gear stage driven gear 32.

[0072] In the hybrid transmission provided by the embodiment of the present invention, an oil baffle plate 10 is fixed to the transmission housing 20, and the oil baffle plate 10 is arranged to surround the gear drive gear 32. As a result, when the gear drive gear 32 on the output shaft 30 generates oil agitation during vehicle operation and splashes oil forward, the oil baffle plate 10, which is arranged to surround the gear drive gear 32, can form a shield in the parabolic direction of the splashed oil, causing all the oil to adhere to the inner surface of the oil baffle plate 10, thereby shortening the oil splash distance. Furthermore, the inner surface of the oil baffle plate 10 guides the oil adhering to the oil baffle plate 10 into the transmission, lubricating each component in the transmission with oil, while simultaneously reducing the generation of air bubbles, reducing oil agitation losses, improving the transmission efficiency of mechanical parts, and ultimately improving the power performance of the hybrid transmission.

[0073] In some embodiments of the present invention, as shown in Figures 2 and 3, the oil baffle plate 10 includes an oil baffle plate body 11 and a connecting portion 12, the oil baffle plate body 11 being an arc-shaped plate and arranged to surround the gear shift driven gear 32, and the connecting portion 12 being connected to the oil baffle plate body 11 and fixedly connected to the transmission housing 20.

[0074] The curved surface of the arc-shaped plate conforms to the parabolic shape of oil splatter, resulting in a superior shielding effect while simultaneously reducing bubble generation and lowering oil stirring losses.

[0075] In some embodiments of the present invention, as shown in Figures 6 and 7, the gear shift drive gear 32 includes a second-speed drive gear 322, a first-speed drive gear 321, and a third-speed drive gear 323 arranged in close proximity and spaced apart in order, with the second-speed drive gear 322 being closest to the power output gear 31 of the output shaft, and the oil baffle plate body 11 is arranged to surround the front-down position of the first-speed drive gear 321 and the second-speed drive gear 322.

[0076] Thus, the oil agitation effect is maximized by the first-speed driven gear 321 and the second-speed driven gear 322 on the output shaft 30. However, the third-speed driven gear 323 is located furthest inward on the output shaft 30, and its front is close to the inner wall of the transmission housing 20. As a result, the resistance to oil agitation itself is relatively large. Therefore, by positioning the oil baffle plate body 11 in front of and below the first-speed driven gear 321 and the second-speed driven gear 322, the limited space inside the transmission can be utilized to the fullest extent.

[0077] In some embodiments of the present invention, the connecting portion 12 includes a first mounting foot 121 and a second mounting foot 122, wherein a first mounting hole 1211 is provided at the end of the first mounting foot 121 away from the oil baffle plate body 11, and a second mounting hole 1221 is provided at the end of the second mounting foot 122 away from the oil baffle plate body 11, and the oil baffle plate 10 is fixedly connected to the transmission housing 20 by a first fastening member passing through the first mounting hole 1211 and a second fastening member passing through the second mounting hole 1221.

[0078] In some embodiments of the present invention, the hybrid transmission includes a mechanical oil pump 60, which is positioned in front of the oil baffle plate 10, and the transmission housing 20 includes a main casing and an oil pump housing (not shown) for the mechanical oil pump 60, which is fixedly connected to the main casing, and the oil baffle plate 10 is fixedly connected to the oil pump housing by a first fastener passing through a first mounting hole 1211 and a second fastener passing through a second mounting hole 1221.

[0079] By connecting the oil baffle plate 10 to the mechanical oil pump 60, the installation and fixing of the oil baffle plate 10 becomes easier. At the same time, since the mechanical oil pump 60 is located in front of the 3-speed driven gear 323, the outer wall surface of the mechanical oil pump 60 also acts as an oil baffle, reducing the covering area of ​​the oil baffle plate 10. The oil baffle plate 10 is bolted to the mechanical oil pump 60 via the first mounting foot 121 and the second mounting foot 122, which provides the same fixing effect as a method of directly bolting it to the transmission housing 20, while making the placement and installation of the oil baffle plate 10 easier and saving manufacturing materials.

[0080] In some embodiments of the present application, the oil baffle plate body 11 has a first side wall 111 and a second side wall 112, the first side wall 111 and the second side wall 112 facing each other in the axial direction of the oil baffle plate body 11, the axial direction being the direction of extension of the central axis of the oil baffle plate body 11, and the oil baffle plate 10 further includes an oil baffle plate extension 13, one side of the oil baffle plate extension 13 being connected to a part of the first side wall 111. The other side of the oil baffle plate extension 13 extends along the axial direction of the oil baffle plate body 11, away from the second side wall 112, to a position in front of and below the differential gear 41, and is arranged to surround the area below the power output gear 31 of the output shaft. The oil baffle plate extension 13 is spaced apart from the power output gear 31 of the output shaft, and the orthographic projection of the oil baffle plate extension 13 onto the setting plane partially overlaps with the orthographic projection of the oil baffle plate body 11 onto the setting plane.

[0081] In some embodiments of the present application, the first side wall 111 includes a first portion 1111 and a second portion 1112 connected along the circumferential direction of the oil baffle plate body 11, wherein the first portion 1111 is connected to an oil baffle plate extension 13, and a portion of the oil baffle plate extension 13 is located on one side of the first portion 1111 away from the second portion 1112, the second portion 1112 is connected to a first mounting foot 121, the end of which extends away from the inner surface of the oil baffle plate body 11, and the second mounting foot 122 is connected to a second side wall 112, the end of which extends away from the inner surface of the oil baffle plate body 11.

[0082] In the above plan, there are offset portions of the oil baffle plate extension 13 and the oil baffle plate body 11, that is, there is a gap above the oil baffle plate extension 13, which is to avoid the clutch's movement mechanism, and Other related This is to avoid fixed parts.

[0083] In some embodiments of the present invention, the inner surface of the oil baffle plate body 11 facing the output shaft 30 and / or the differential gear 41 is a smooth arc-shaped plate surface, and / or the oil baffle plate extension 13 is an arc-shaped plate, and the inner surface of the oil baffle plate extension 13 facing the output shaft 30 and / or the differential gear 41 is a smooth arc-shaped plate surface.

[0084] One side of the oil baffle plate 10 facing the output shaft 30 has a smooth, curved plate surface, which can adapt to the parabolic path of oil splashes, improving oil shielding efficiency and reducing the possibility of bubble formation.

[0085] In some embodiments of the present application, the oil baffle plate body 11 includes a first plate 113 and a second plate 114 connected in the axial direction of the oil baffle plate 11, wherein the first plate 113 is connected to the oil baffle plate extension 13, and the second plate 114 is located on one side of the first plate 113 away from the oil baffle plate extension 13, the plate surfaces of the first plate 113 and the plate surfaces of the second plate 114 are both curved surfaces, the axial direction of the oil baffle plate body 11 is the direction of extension of the central axis of the oil baffle plate body 11, and in the thickness direction of the oil baffle plate body 11, the first plate 113 is closer to the central axis of the oil baffle plate body 11 than the second plate 114.

[0086] For example, the first plate 113 is positioned to surround the second-speed driven gear 322 in front of it, and the first plate 113 is closer to the central axis of the output shaft 30 than the second plate 114.

[0087] In some embodiments of the present application, the oil baffle plate extension 13 includes a third plate 131 and a fourth plate 132 connected axially to the oil baffle plate extension 13, wherein the third plate 131 is connected to the oil baffle plate body 11, and the fourth plate 132 is located on one side of the third plate 131 away from the oil baffle plate body 11, the plate surfaces of the third plate 131 and the plate surfaces of the fourth plate 132 are both curved, the axial direction of the oil baffle plate extension 13 is the direction of extension of the central axis of the oil baffle plate extension 13, and in the thickness direction of the oil baffle plate extension 13, the third plate 131 is closer to the central axis of the oil baffle plate extension 13 than the fourth plate 132.

[0088] For example, the third plate 131 is positioned to surround the lower part of the power output gear 31 of the output shaft, and the third plate 131 is further away from the differential gear 41 than the fourth plate 132.

[0089] Embodiments of the present application provide a vehicle which is a hybrid vehicle. The vehicle includes an oil baffle plate 10 as described in any one of the embodiments above, and / or the vehicle includes a hybrid transmission as described in any one of the embodiments above.

[0090] Since the vehicle provided by the embodiment of the present invention has the oil baffle plate 10 and / or hybrid transmission as described above, its power components have relatively high mechanical transmission efficiency, and as a result the vehicle has better power performance and good power performance in driving conditions.

[0091] Those skilled in the art will readily conceive of other embodiments of the Application after considering the specification and carrying out the Application disclosed herein. The Application is intended to cover any variations, uses, or adaptations of the Application, including common or customary technical means known in the Art and not disclosed herein, in accordance with the general principles of the Application. The Specification and Examples are to be considered merely illustrative.

[0092] It should be understood that this application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes are possible without departing from that scope. The scope of this application is limited only by the attached claims.

Claims

1. An oil baffle plate for a hybrid transmission, wherein the oil baffle plate (10) includes an oil baffle plate body (11) and a connecting portion (12), The oil baffle plate body (11) is an arc-shaped plate and is used to surround a part of the gear shift driven gear (32) in the hybrid transmission. The connecting portion (12) is connected to the oil baffle plate body (11) and is used to fix the oil baffle plate (10) to the transmission housing (20) of the hybrid transmission. Oil baffle plate.

2. The connecting portion (12) includes a first mounting leg (121) and a second mounting leg (122), wherein a first mounting hole (1211) is provided at the end of the first mounting leg (121) away from the oil baffle plate body (11), and a second mounting hole (1221) is provided at the end of the second mounting leg (122) away from the oil baffle plate body (11), and the oil baffle plate (10) is fixedly connected to the transmission housing (20) by a first fastening member passing through the first mounting hole (1211) and a second fastening member passing through the second mounting hole (1221). The oil baffle plate according to claim 1.

3. The oil baffle plate body (11) has a first side wall (111) and a second side wall (112), the first side wall (111) and the second side wall (112) are opposite each other in the axial direction of the oil baffle plate body (11), and the axial direction is the direction in which the central axis of the oil baffle plate body (11) extends. The oil baffle plate (10) further includes an oil baffle plate extension (13), one side of which is connected to a part of the first side wall (111), and the other side of which extends along the axial direction of the oil baffle plate body (11) away from the second side wall (112). The orthographic projection of the oil baffle plate extension (13) onto the setting plane partially overlaps with the orthographic projection of the oil baffle plate body (11) onto the setting plane, and the setting plane is perpendicular to the axial direction of the oil baffle plate body (11). The oil baffle plate according to claim 2.

4. The first side wall (111) includes a first portion (1111) and a second portion (1112) connected along the circumferential direction of the oil baffle plate body (11), The first portion (1111) is connected to the oil baffle plate extension (13), and a portion of the oil baffle plate extension (13) is located on one side of the first portion (1111) away from the second portion (1112). The second portion (1112) is connected to the first mounting leg (121), and the end of the first mounting leg (121) extends away from the inner surface of the oil baffle plate body (11). The second mounting leg (122) is connected to the second side wall (112), and the end of the second mounting leg (122) extends away from the inner surface of the oil baffle plate body (11). The oil baffle plate according to claim 3.

5. The inner surface of the oil baffle plate body (11) is a smooth arc-shaped plate surface, and / or the oil baffle plate extension (13) is an arc-shaped plate, and the inner surface of the oil baffle plate body extension line (13) is a smooth arc-shaped plate surface. The oil baffle plate according to claim 3.

6. The oil baffle plate body (11) includes a first plate (113) and a second plate (114) connected in the axial direction of the oil baffle plate body (11), the first plate (113) being connected to the oil baffle plate extension (13), the second plate (114) being located on one side of the first plate (113) away from the oil baffle plate extension (13), the plate surface of the first plate (113) and the plate surface of the second plate (114) both being curved surfaces, and the axial direction of the oil baffle plate body (11) being the direction of extension of the central axis of the oil baffle plate body (11). In the thickness direction of the oil baffle plate body (11), the first plate (113) is closer to the central axis of the oil baffle plate body (11) than the second plate (114), The oil baffle plate according to claim 3.

7. The oil baffle plate extension (13) includes a third plate (131) and a fourth plate (132) connected in the axial direction of the oil baffle plate extension (13), wherein the third plate (131) is connected to the oil baffle plate body (11), and the fourth plate (132) is located on one side of the third plate (131) away from the oil baffle plate body (11), and the plate surfaces of the third plate (131) and the fourth plate (132) are both curved surfaces, the axial direction of the oil baffle plate extension (13) is the direction of extension of the central axis of the oil baffle plate extension (13), and in the thickness direction of the oil baffle plate extension (13), the third plate (131) is closer to the central axis of the oil baffle plate extension (13) than the fourth plate (132). The oil baffle plate according to claim 3.

8. A hybrid transmission comprising a transmission housing (20), an output shaft (30), a differential (40), an input shaft (50), and an oil baffle plate (10), The output shaft (30) and the differential (40) are located at the bottom of the transmission housing (20), and the output shaft (30) is located in front of the differential (40). The output shaft (30) is equipped with an output shaft power output gear (31) and a gear drive gear (32). The output shaft power output gear (31) is located at the end of the output shaft (30). The differential (40) is equipped with a differential gear (41), and the differential gear (41) meshes with the output shaft power output gear (31). The input shaft (50) is located in front of and above the output shaft (30) and is rotationally driven by torque provided by the engine and / or motor, and an input gear (51) is installed on the input shaft (50), and the input gear (51) meshes with the gear shift driven gear (32), The oil baffle plate (10) is fixedly connected to the transmission housing (20), and is positioned to surround the gear shift driven gear (32) at a lower front position, and is installed at a distance from the gear shift driven gear (32). A transmission for hybrid vehicles.

9. The oil baffle plate (10) includes an oil baffle plate body (11) and a connecting portion (12). The oil baffle plate body (11) is an arc-shaped plate and is arranged to surround the gear shift driven gear (32). The aforementioned connection portion (12) is connected to the oil baffle plate body (11) and is fixedly connected to the transmission housing (20). The hybrid transmission according to claim 8.

10. The gear shift drive gear (32) includes a second-speed drive gear (322), a first-speed drive gear (321), and a third-speed drive gear (323) that are arranged in close proximity and spaced apart in order, the second-speed drive gear (322) being closest to the power output gear (31) of the output shaft, and the oil baffle plate body (11) being positioned to surround the first-speed drive gear (321) and the second-speed drive gear (322) in a position lower and in front of them. The hybrid transmission according to claim 9.

11. The connecting portion (12) includes a first mounting leg (121) and a second mounting leg (122), wherein a first mounting hole (1211) is provided at the end of the first mounting leg (121) away from the oil baffle plate body (11), and a second mounting hole (1221) is provided at the end of the second mounting leg (122) away from the oil baffle plate body (11), and the oil baffle plate (10) is fixedly connected to the transmission housing (20) by a first fastening member passing through the first mounting hole (1211) and a second fastening member passing through the second mounting hole (1221). The hybrid transmission according to claim 10.

12. The aforementioned hybrid transmission includes a mechanical oil pump (60), which is positioned in front of the oil baffle plate (10). The transmission housing (20) includes a main casing and an oil pump housing for the mechanical oil pump (60), the oil pump housing being fixedly connected to the main casing, and the oil baffle plate (10) being fixedly connected to the oil pump housing by a first fastening member passing through a first mounting hole (1211) and a second fastening member passing through a second mounting hole (1221). The hybrid transmission according to claim 11.

13. The oil baffle plate body (11) has a first side wall (111) and a second side wall (112), the first side wall (111) and the second side wall (112) are opposite each other in the axial direction of the oil baffle plate body (11), and the axial direction is the direction in which the central axis of the oil baffle plate body (11) extends. The oil baffle plate (10) further includes an oil baffle plate extension (13), one side of which is connected to a part of the first side wall (111), and the other side of which extends along the axial direction of the oil baffle plate body (11) away from the second side wall (112) to a position in front of and below the differential gear (41), and is positioned below and surrounding the power output gear (31) of the output shaft, and the oil baffle plate extension (13) is spaced apart from the power output gear (31) of the output shaft. The orthographic projection of the oil baffle plate extension (13) onto the setting plane partially overlaps with the orthographic projection of the oil baffle plate body (11) onto the setting plane. The hybrid transmission according to claim 11.

14. The first side wall (111) includes a first portion (1111) and a second portion (1112) connected along the circumferential direction of the oil baffle plate body (11), The first portion (1111) is connected to the oil baffle plate extension (13), and a portion of the oil baffle plate extension (13) is located on one side of the first portion (1111) away from the second portion (1112). The second portion (1112) is connected to the first mounting leg (121), and the end of the first mounting leg (121) extends away from the inner surface of the oil baffle plate body (11); the second mounting leg (122) is connected to the second side wall (112), and the end of the second mounting leg (122) extends away from the inner surface of the oil baffle plate body (11). The hybrid transmission according to claim 13.

15. The inner surface of the oil baffle plate body (11) facing the output shaft (30) and / or the differential gear (41) is a smooth arc-shaped plate surface, and / or The oil baffle plate extension (13) is an arc-shaped plate, and the inner surface of the oil baffle plate extension (13) toward the output shaft (30) and / or the differential gear (41) is a smooth arc-shaped plate surface. The hybrid transmission according to claim 13.

16. The oil baffle plate body (11) includes a first plate (113) and a second plate (114) connected in the axial direction of the oil baffle plate body (11), the first plate (113) being connected to the oil baffle plate extension (13), the second plate (114) being located on one side of the first plate (113) away from the oil baffle plate extension (13), the plate surface of the first plate (113) and the plate surface of the second plate (114) both being curved surfaces, and the axial direction of the oil baffle plate body (11) being the direction of extension of the central axis of the oil baffle plate body (11). In the thickness direction of the oil baffle plate body (11), the first plate (113) is closer to the central axis of the oil baffle plate body (11) than the second plate (114), The hybrid transmission according to claim 13.

17. The first plate (113) is positioned to surround the front of the second-speed driven gear (322), and the first plate (113) is closer to the central axis of the output shaft (30) than the second plate (114). A hybrid transmission according to claim 16.

18. The oil baffle plate extension (13) includes a third plate (131) and a fourth plate (132) connected in the axial direction of the oil baffle plate extension (13), wherein the third plate (131) is connected to the oil baffle plate body (11), and the fourth plate (132) is located on one side of the third plate (131) away from the oil baffle plate body (11), and the plate surfaces of the third plate (131) and the fourth plate (132) are both curved surfaces, and the axial direction of the oil baffle plate extension (13) is the direction of extension of the central axis of the oil baffle plate extension (13). In the thickness direction of the oil baffle plate extension portion (13), the third plate body (131) is closer to the central axis of the oil baffle plate extension portion (13) than the fourth plate body (132). The hybrid transmission according to claim 13.

19. The third plate (131) is positioned to surround the lower part of the power output gear (31) of the output shaft, and the third plate (131) is further away from the differential gear (41) than the fourth plate (132). A hybrid transmission according to claim 18.

20. A transmission for hybrid vehicles comprising an oil baffle plate (10) according to any one of claims 1 to 7, or a transmission for hybrid vehicles according to any one of claims 8 to 19. vehicle.

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