Range-extended power assembly and range-extended electric vehicle

Abstract

The invention provides a range-extended power assembly and a range-extended electric vehicle, two shells of the range-extended power assembly define a containing cavity, and the containing cavity contains two parallel shaft speed reducers arranged in parallel. One side of a housing comprises two motor chambers for fixing a motor stator and a generator stator, respectively. The other side of one shell comprises two shaft holes, two bearing grooves and an oil guide rib. Each shaft hole is used for communicating the containing cavity with the corresponding motor cavity and fixing a bearing of a shaft of the corresponding speed reducer. Each bearing groove is used for fixing a bearing of the other shaft of one speed reducer, and the distance between the two shaft holes is smaller than the distance between one bearing groove and the other shaft hole and larger than the distance between the other bearing groove and one shaft hole. The extending direction of the oil guide rib is from one shaft hole to the other shaft hole, the extending direction of the oil guide rib is inclined relative to the horizontal plane, lubricating oil collected by the oil guide rib is guided to the other shaft hole, the lubricating effect of the generator is improved, and the production cost of the range extending type power assembly is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of extended-range electric vehicles, and more specifically, to an extended-range powertrain and an extended-range electric vehicle. Background Art

[0002] With the development of new energy technology, extended-range electric vehicles have been more widely used. The extended-range powertrain also has two reducers, and the output shaft of each reducer is connected to the input shaft of a motor. In the process of each motor driving a reducer to rotate, the gears and bearings of each shaft of the reducer will generate a lot of heat and wear due to friction. If they are not cooled and lubricated in time, the transmission of the extended-range powertrain will fail.

[0003] In order to realize the cooling and lubrication of the extended-range powertrain, an oil stirring pan is usually provided. However, the oil stirring pan not only causes a large oil stirring loss, but also increases the cost of the extended-range powertrain. Summary of the invention

[0004] The present application provides an extended-range powertrain and an extended-range electric vehicle, in which the cooling and lubrication effects of the gears and bearings of each shaft of the reducer connected to the generator in the extended-range powertrain can not only be improved, but also the production cost of the extended-range powertrain can be reduced. Thus, the performance of the extended-range powertrain and the extended-range electric vehicle is improved, and the production cost of the extended-range electric vehicle is reduced.

[0005] In the first aspect, an extended-range powertrain is provided, the extended-range powertrain comprising two housings, one side of a housing comprising two motor cavities arranged in parallel, the two motor cavities being used to fix a stator of a motor and a stator of a generator respectively, the other side of a housing being used to enclose another housing to form a reducer accommodating chamber, the reducer accommodating chamber being used to accommodate two parallel-axis reducers arranged in parallel, one parallel-axis reducer comprising an input shaft, an intermediate shaft and an output shaft, and the other parallel-axis reducer comprising another input shaft and another output shaft. The other side of a housing comprises two shaft holes, two bearing grooves and an oil guide rib. Among them, one shaft hole is used to connect the reducer accommodating chamber and a motor cavity respectively and a bearing for fixing an input shaft, and the other shaft hole is used to connect the reducer accommodating chamber and another motor cavity and a bearing for fixing another input shaft. One bearing groove is used to fix a bearing of an intermediate shaft, and the other bearing groove is used to fix a bearing of another output shaft, and the spacing between one bearing groove and the other shaft hole is greater than the spacing between the two shaft holes, and the spacing between the other bearing groove and the one shaft hole is less than the spacing between the two shaft holes. An oil guide rib extends in a direction from one shaft hole toward another shaft hole, and an oil guide rib extends in a direction inclined relative to a horizontal plane to guide the lubricating oil collected by the oil guide rib to the other shaft hole.

[0006] The extended-range powertrain provided in the embodiment of the present application has a spacing between one bearing groove and another shaft hole that is greater than the spacing between the two shaft holes, and a spacing between another bearing groove and one shaft hole that is less than the spacing between the two shaft holes. In this way, the space between the two shaft holes can be used to set an oil guide rib in the space between the two shaft holes, and the oil guide rib can collect the lubricating oil thrown out by the gear of the input shaft of a parallel shaft reducer connected to the motor transmission. In addition, the oil guide rib is set to be inclined relative to the horizontal plane, so that under the action of gravity, the oil guide rib can guide the lubricating oil it collects to another shaft hole, and realize the passive cooling and passive lubrication of the gears and bearings of the input shaft of another parallel shaft reducer connected to the generator transmission. Therefore, it can not only improve the cooling and lubrication effects of the gears and bearings of each shaft of another parallel shaft reducer connected to the generator transmission, but also reduce the production cost of the extended-range powertrain. In addition, the performance of the extended-range powertrain is improved.

[0007] In one implementation, an oil guide rib is arranged between an axial hole and another axial hole, and along the extension direction of an oil guide rib, the distance between one end of an oil guide rib and an axial hole is greater than the distance between the other end of an oil guide rib and the other axial hole.

[0008] Correspondingly, an oil guide rib can better guide the collected lubricating oil to another shaft hole, further improving the passive cooling and passive lubrication of the gears and bearings of each shaft of another parallel shaft reducer connected to the generator transmission.

[0009] In one implementation, the other side of a shell includes a protrusion, a side of a protrusion facing another shaft hole includes an oil outlet, an outlet of an oil outlet faces another shaft hole, and an oil guide rib is used to collect lubricating oil output by an oil outlet.

[0010] Accordingly, an oil guide rib can centrally collect the lubricating oil outputted from an oil outlet of a protrusion, so that an oil guide rib collects more lubricating oil.

[0011] In one implementation, the length of a protrusion is smaller than the length of an oil guide rib, the distance between a protrusion and an axial hole is larger than the distance between the other end of an oil guide rib and another axial hole, and the distance between an oil outlet and an axial hole is larger than the distance between one end of an oil guide rib and an axial hole.

[0012] Accordingly, not only can the production cost of a protrusion be reduced, but also the amount of lubricating oil output from an oil outlet of a protrusion collected by an oil guide rib can be further increased.

[0013] In one implementation, an oil guide rib includes a through hole, and the through hole is used to flow out the lubricating oil collected by the oil guide rib. The through hole penetrates the oil guide rib along the thickness direction of the oil guide rib.

[0014] Accordingly, an oil guide rib can not only guide the collected lubricating oil to another shaft hole, but also guide part of the collected lubricating oil to other components through the through hole, thereby increasing the cooling and lubrication effects of other components.

[0015] In one implementation, the distance between a through hole and one end of an oil-conducting rib is greater than or equal to the distance between the through hole and the other end of the oil-conducting rib.

[0016] The distance between a through hole and one end of an oil guide rib is greater than or equal to the distance between a through hole and the other end of an oil guide rib, which can be understood as: relative to an axial hole, a through hole of an oil guide rib is arranged on a side closer to another axial hole. In this way, an oil guide rib can guide part of the lubricating oil collected by it to another bearing groove located between the two axial holes through the through hole, thereby realizing passive cooling and passive lubrication of the gears and bearings of the output shaft of another parallel shaft reducer connected to the generator transmission.

[0017] The extended-range powertrain provided in the embodiment of the present application can realize passive cooling and passive lubrication of the gears and bearings of each shaft of another parallel-axis reducer connected to the generator by only setting an oil guide rib on the other side of a housing and setting a through hole on the side of an oil guide rib close to another shaft hole. Furthermore, it can not only further improve the cooling and lubrication effects of the gears and bearings of each shaft of another parallel-axis reducer connected to the generator, but also further reduce the production cost of the extended-range powertrain.

[0018] In one implementation, a through hole is connected to an end face of an oil guide rib. One end face of an oil guide rib faces the other housing, and the distance between one end face of an oil guide rib and the other housing along the width direction of the oil guide rib is less than or equal to the distance between each bearing groove or each shaft hole and the other housing. In this way, an oil guide rib can guide all the lubricating oil collected by it to the other shaft hole or the other bearing groove as much as possible.

[0019] In one implementation, the other side of a housing further includes an oil collecting rib, the oil collecting rib and the oil guiding rib are arranged at intervals, and the distance between one end of the oil collecting rib and the one shaft hole is greater than the distance between the other end of the oil collecting rib and the other shaft hole. The distance between the other end of the oil collecting rib and the other shaft hole is less than or equal to the distance between the other end of the oil guiding rib and the other shaft hole, and the oil collecting rib is used to collect lubricating oil flowing out of the other end of the oil guiding rib.

[0020] Accordingly, by merely setting an oil collecting rib at intervals near an oil guide rib on the other side of a shell, the lubricating oil collected by an oil guide rib can be directed to an oil collecting rib, thereby further reducing the production cost of the extended-range powertrain.

[0021] In addition, the other end of an oil collecting rib is closer to another shaft hole than the other end of an oil guiding rib, so that an oil collecting rib can not only collect the lubricating oil flowing out of the other end of an oil guiding rib, but also the amount of lubricating oil collected by an oil collecting rib from the other end of an oil guiding rib is relatively large.

[0022] In one implementation, one end of an oil collecting rib faces another bearing groove, the distance between one end of an oil collecting rib and an oil guiding rib is greater than the distance between the other end of an oil collecting rib and an oil guiding rib, and an oil collecting rib is also used to guide the lubricating oil collected by the oil collecting rib to another bearing groove.

[0023] Correspondingly, under the action of gravity, an oil collecting rib can smoothly guide the collected lubricating oil to another bearing groove, thereby realizing passive cooling and passive lubrication of the gears and bearings of the output shaft of another parallel shaft reducer connected to the generator transmission.

[0024] In one implementation, the other side of one housing further includes another oil collecting rib, and the other oil collecting rib is arranged adjacent to one oil guiding rib. The distance between one end of the other oil collecting rib and one shaft hole is less than or equal to the distance between one through hole of one oil guiding rib and one shaft hole, the distance between the other end of the other oil collecting rib and another shaft hole is less than or equal to the distance between one through hole of one oil guiding rib and another shaft hole, and the other oil collecting rib is used to collect lubricating oil flowing out of the through hole of one oil guiding rib.

[0025] Accordingly, by simply setting another oil collecting rib near an oil guide rib on the other side of a shell, the lubricating oil flowing out of a through hole of an oil guide rib can be guided to the other oil collecting rib, further reducing the production cost of the extended-range powertrain.

[0026] In addition, another oil collecting rib is located below a through hole of an oil guiding rib, so that the other oil collecting rib can not only collect the lubricating oil flowing out of a through hole of an oil guiding rib, but also the amount of lubricating oil collected by the other oil collecting rib from a through hole of an oil guiding rib is relatively large.

[0027] In one implementation, the other end of another oil collecting rib faces another bearing groove, the distance between one end of another oil collecting rib and an oil guide rib is smaller than the distance between the other end of another oil collecting rib and an oil guide rib, and the other oil collecting rib is also used to guide the lubricating oil collected by the other oil collecting rib to another bearing groove.

[0028] Correspondingly, under the action of gravity, another oil collecting rib can smoothly guide the collected lubricating oil to another bearing groove, thereby realizing passive cooling and passive lubrication of the gears and bearings of the output shaft of another parallel shaft reducer connected to the generator transmission.

[0029] In one implementation, the other side of one housing further includes two grooves, and the extension direction of each groove is inclined relative to the horizontal plane. One groove is used to connect to another shaft hole and to guide the collected lubricating oil into the other shaft hole. The other groove is used to connect to another bearing groove and to guide the collected lubricating oil into another bearing.

[0030] Accordingly, it is only necessary to set a groove connected to another shaft hole or another bearing groove on the other side of a housing, and set the groove to be inclined relative to the horizontal plane, so that under the action of gravity, the lubricating oil can flow into the other shaft hole or another bearing groove along the groove, and realize the passive cooling and passive lubrication of the gears and bearings of each shaft of another parallel shaft reducer connected to the generator transmission. This can further reduce the production cost of the extended-range powertrain.

[0031] In one implementation, one side of the other shell faces the other side of the one shell, and one side of the other shell includes another oil guide rib, and the other oil guide rib is combined with the one oil guide rib along the width direction of the one oil guide rib to form an oil guide groove.

[0032] By arranging another oil guide rib on one side of the other housing to match an oil guide rib of one housing, the other oil guide rib of the other housing can collect lubricating oil from the one oil guide rib of the one housing. Furthermore, the lubricating oil collected by the other oil guide rib of the other housing can lubricate the components on one side of the other housing. Thus, the cooling and lubricating effects of the gears and bearings of each shaft of each reducer of the range-extending powertrain are improved, and the production cost of the range-extending powertrain is reduced.

[0033] In one implementation, the extension direction of the other oil guide rib is the same as the extension direction of the one oil guide rib, and the acute angle between the extension direction of the oil guide groove and the horizontal plane is in the range of [15 degrees, 30 degrees]. In this way, the efficiency of the oil guide groove in collecting lubricating oil and the efficiency of the oil guide groove in guiding the collected lubricating oil to the other shaft hole can be improved.

[0034] In one implementation, one end of the other oil guide rib and one end of the other oil guide rib are bent toward one side of the oil outlet, respectively. In this way, it is possible to prevent the lubricating oil collected by one oil guide rib from flowing back along one end of the one oil guide rib and the lubricating oil collected by the other oil guide rib from flowing back along one end of the other oil guide rib.

[0035] In one implementation, the length of the other oil guide rib is equal to the length of the one oil guide rib. In this way, the efficiency of the oil guide groove formed by the combination of the two oil guide ribs in collecting lubricating oil and the efficiency of the oil guide groove in guiding the collected lubricating oil to the other shaft hole can be improved.

[0036] In a second aspect, an extended-range electric vehicle is provided, comprising wheels, a battery pack, and an extended-range powertrain as described in the first aspect and any possible implementation of the first aspect, the extended-range powertrain being used to receive power from the battery pack and drive the wheels.

[0037] Since the extended-range powertrain provided by the first aspect has better cooling and lubrication effects and lower production costs, the production cost of the extended-range electric vehicle provided by the second aspect can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of an extended-range electric vehicle provided in an embodiment of the present application.

[0039] Figure 2 A schematic diagram of the structure of an extended-range powertrain provided in an embodiment of the present application.

[0040] Figure 3 and Figure 4 They are Figure 2 A schematic structural diagram of a housing of an extended-range powertrain is shown.

[0041] Figure 5 for Figure 4 An enlarged schematic diagram of portion A of a housing is shown.

[0042] Figure 6 for Figure 2 A schematic diagram of the structure of another housing of the extended-range powertrain is shown.

[0043] Figure 7 for Figure 6 An enlarged schematic diagram of part B of another housing is shown. DETAILED DESCRIPTION

[0044] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0045] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or. For example, A / B can mean A or B. The “and / or” in this article is merely a way to describe the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0046] The directions or positional relationships indicated by the terms "up", "down", "left", "right", "inside", "outside", etc. in the embodiments of the present application are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0047] References to "some embodiments" and the like described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in some embodiments" and the like appearing in different places in this specification do not necessarily all refer to the same embodiment, but rather mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "include", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0048] The "equal" mentioned in this application is not equal in the strict sense, but within the allowable error range. The "perpendicular" is not perpendicular in the strict sense, but within the allowable error range. The "parallel" is not parallel in the strict sense, but within the allowable error range.

[0049] In the embodiments of the present application, the same reference numerals represent the same component or the same part. In the embodiments of the present application, for multiple identical parts, only one of the parts may be marked with a reference numeral in the drawings as an example. For other identical parts or components, the reference numerals are also applicable. In addition, the sizes and dimensions of the parts shown in the drawings are only exemplary.

[0050] The embodiment of the present application provides an extended-range powertrain, which includes two housings, one side of a housing includes two motor cavities arranged in parallel, the two motor cavities are used to fix the stator of a motor and the stator of a generator respectively, and the other side of a housing is used to enclose the other housing to form a reducer accommodating chamber, the reducer accommodating chamber is used to accommodate two parallel-axis reducers arranged in parallel, one parallel-axis reducer includes an input shaft, an intermediate shaft and an output shaft, and the other parallel-axis reducer includes another input shaft and another output shaft. The other side of a housing includes two shaft holes, two bearing grooves and an oil guide rib. Among them, one shaft hole is used to connect the reducer accommodating chamber and a motor cavity respectively and a bearing for fixing an input shaft, and the other shaft hole is used to connect the reducer accommodating chamber and another motor cavity and a bearing for fixing another input shaft. One bearing groove is used to fix a bearing of an intermediate shaft, and the other bearing groove is used to fix a bearing of another output shaft. The spacing between one bearing groove and the other shaft hole is greater than the spacing between the two shaft holes, and the spacing between the other bearing groove and the one shaft hole is less than the spacing between the two shaft holes. An oil guide rib extends in a direction from one shaft hole toward another shaft hole, and an oil guide rib extends in a direction inclined relative to a horizontal plane to guide the lubricating oil collected by the oil guide rib to the other shaft hole.

[0051] The extended-range powertrain provided in the embodiment of the present application has a spacing between one bearing groove and another shaft hole that is greater than the spacing between the two shaft holes, and a spacing between another bearing groove and one shaft hole that is less than the spacing between the two shaft holes. In this way, an oil guide rib can be set in the space between the two shaft holes, and the oil guide rib can collect the lubricating oil thrown out by the gear of the input shaft of a parallel shaft reducer connected to the motor transmission. In addition, the oil guide rib is set to be inclined relative to the horizontal plane, so that under the action of gravity, the oil guide rib can guide the lubricating oil it collects to another shaft hole, thereby realizing passive cooling and passive lubrication of the gears and bearings of the input shaft of another parallel shaft reducer connected to the generator transmission. Therefore, not only can the cooling and lubrication effects of the gears and bearings of each shaft of another parallel shaft reducer connected to the generator transmission be improved, but also the production cost of the extended-range powertrain can be reduced. In addition, the performance of the extended-range powertrain is improved.

[0052] The present application also provides an extended-range electric vehicle. Figure 1 The extended-range electric vehicle provided in the embodiment of the present application is first described in detail.

[0053] Figure 1 The schematic structural diagram of a range-extended electric vehicle provided in an embodiment of the present application is shown in FIG. Figure 1As shown, the extended-range electric vehicle 1 includes one or more powertrains 10, a battery pack 20 and wheels 30. The powertrain 10 is used to receive power from the battery pack 20, convert the electrical energy into mechanical energy and drive the wheels 30 to rotate.

[0054] The extended-range electric vehicle provided in the embodiments of the present application is also called a range extended electric vehicle, or REEV for short.

[0055] The extended-range powertrain 10 includes two motors, an electric motor and a generator. The electric vehicle 1 can switch between pure electric and extended-range operating modes. When the electric vehicle 1 is in pure electric operating mode, the battery pack 20 supplies power to the electric motor to drive the electric vehicle 1. When the battery 20 is low or exhausted, the engine can be started to switch the electric vehicle 1 to the extended-range operating mode. When the electric vehicle 1 is in the extended-range mode, the engine drives the generator to generate electricity, and the generated electricity can be used to charge the battery 20 or provide it to the motor.

[0056] Combine the following Figures 2 to 7 The structure of the extended-range powertrain provided in the embodiment of the present application is described in detail.

[0057] like Figure 2 As shown, the extended-range powertrain 10 includes a housing 100. Figure 3 and Figure 4 As shown, one side of a housing 100 includes a motor cavity 111 and another motor cavity 112 arranged in parallel. One motor cavity 111 is used to fix the stator of the motor of the extended-range powertrain 10, and the other motor cavity 112 is used to fix the stator of the generator of the extended-range powertrain 10.

[0058] like Figure 2 As shown, the extended-range powertrain 10 further includes another housing 200 , and the other side of one housing 100 is used to enclose one side of the other housing 200 to form a reducer accommodating chamber, and the reducer accommodating chamber is used to accommodate two parallel-axis reducers arranged in parallel.

[0059] It should be noted that the parallel arrangement involved in the embodiment of the present application can be understood as a parallel arrangement along the horizontal direction. The horizontal direction is perpendicular to the direction of gravity. A parallel axis reducer can be understood as the axes of the reducer being arranged in parallel.

[0060] like Figure 2As shown, a parallel shaft reducer includes an input shaft 311, an intermediate shaft 312 and an output shaft 313. An input shaft 311 passes through a gear 3111 and two bearings 3112-3113, an intermediate shaft 312 passes through two gears 3121-3122 and two bearings 3123-3124, and an output shaft 313 passes through a gear 3131 and two bearings ( Figure 2 Only the other bearing 3132 of the two bearings is shown in the figure. A gear 3111 of an input shaft 311 and a gear 3121 of an intermediate shaft 312 are meshed with each other, so that an input shaft 311 of a parallel shaft reducer drives an intermediate shaft 312 to rotate. Another gear 3122 of an intermediate shaft 312 and a gear 3131 of an output shaft 313 are meshed with each other, so that an intermediate shaft 312 of a parallel shaft reducer drives an output shaft 313 to rotate.

[0061] Another parallel shaft reducer includes another input shaft 321 and another output shaft 322. Another input shaft 321 passes through a gear 3211 and two bearings 3212-3213, and another output shaft 322 passes through a gear 3221 and two bearings ( Figure 2 Only the other bearing 3222 of the two bearings is shown in the figure). A gear 3211 of the other input shaft 321 and a gear 3221 of the other output shaft 322 mesh with each other, so that the other input shaft 321 of the other parallel shaft reducer drives the other output shaft 322 to rotate. Then the other parallel shaft reducer reduces the speed of the generator.

[0062] Combine the following Figures 3 to 5 The structure of a housing 100 of the extended-range powertrain 10 will be described in detail.

[0063] like Figure 4 As shown, the other side of a housing 100 includes an axial hole 121. An axial hole 121 of a housing 100 is used to connect the reducer accommodating chamber and a motor chamber 111 respectively, and an axial hole 121 of a housing 100 is also used to fix a bearing 3112 of an input shaft 311. In addition, an axial hole 121 of a housing 100 is also used to fix a bearing of the motor shaft of the motor, and the motor shaft of the motor is connected to an input shaft 311 in transmission. In this way, the motor shaft of the motor can transmit power to an input shaft 311 of a parallel shaft reducer. Then the output torque and speed of the motor are controlled.

[0064] like Figure 4As shown, the other side of one housing 100 also includes another shaft hole 122, and the other shaft hole 122 of one housing 100 is used to connect the reducer accommodating chamber and the other motor chamber 112, and the other shaft hole 122 of one housing 100 is used to fix a bearing 3212 of another input shaft 321. In addition, the other shaft hole 122 of one housing 100 is also used to fix a bearing of the motor shaft of the generator, and the motor shaft of the generator is connected to the other input shaft 321 in a transmission manner. In this way, the motor shaft of the generator can transmit power to the other input shaft 321 of another parallel shaft reducer. Then the output torque and speed of the generator are controlled.

[0065] like Figure 4 As shown, the other side of one housing 100 further includes a bearing groove 123 and another bearing groove 124. The bearing groove 123 of one housing 100 is used to fix a bearing 3123 of one intermediate shaft 312, and the other bearing groove 124 of one housing 100 is used to fix a bearing of another output shaft 322. The distance between one bearing groove 123 of one housing 100 and another shaft hole 122 of one housing 100 is greater than the distance between one shaft hole 121 of one housing 100 and another shaft hole 122 of one housing 100, and the distance between another bearing groove 124 of one housing 100 and one shaft hole 121 of one housing 100 is less than the distance between one shaft hole 121 of one housing 100 and another shaft hole 122 of one housing 100. In other words, a bearing groove 123 of a housing 100 is arranged on a side of an axial hole 121 of a housing 100 away from another axial hole 122 of a housing 100, and another bearing groove 124 of a housing 100 is arranged on a side of another axial hole 122 of a housing 100 close to an axial hole 121 of a housing 100.

[0066] In some embodiments, in order to make the structure of the extended-range powertrain compact, the outer groove wall of a bearing groove 123 of a housing 100 may be tangent to the hole wall of a shaft hole 121 of a housing 100. Similarly, another bearing groove 124 of a housing 100 may be tangent to the hole wall of another shaft hole 122 of a housing 100.

[0067] like Figure 4 As shown, the other side of the housing 100 also includes another axial hole 125 , and the another axial hole 125 of the housing 100 is used to connect to the reducer accommodating chamber, and the another axial hole 125 of the housing 100 is used to fix a bearing of an output shaft 313 .

[0068] like Figure 4 and Figure 5As shown, the other side of a shell 100 also includes an oil guide rib 130, and the extension direction of the oil guide rib 130 is from an axial hole 121 of a shell 100 toward another axial hole 122 of a shell 100. The extension direction of the oil guide rib 130 is inclined relative to the horizontal plane to guide the lubricating oil collected by the oil guide rib 130 to the other axial hole 122 of the shell 100.

[0069] It should be noted that the extension direction of an oil guiding rib 130 can be understood as the length direction of an oil guiding rib 130 .

[0070] In some embodiments, such as Figure 4 As shown, along the gravity direction, the position of one shaft hole 121 of one housing 100 is higher than the position of another shaft hole 122 of one housing 100. In other words, along the gravity direction, one shaft hole 121 of one housing 100 is located to the upper left of another shaft hole 122 of one housing 100. In addition, along the gravity direction, one end 131 of one oil guide rib 130 is higher than the other end 132 of one oil guide rib 130. In this way, one oil guide rib 130 can guide the collected lubricating oil to the other shaft hole 122 of one housing 100.

[0071] In the extended-range powertrain 10 provided in the embodiment of the present application, the distance between a bearing groove 123 of a housing 100 and another shaft hole 122 of a housing 100 is larger than the distance between a shaft hole 121 of a housing 100 and another shaft hole 122 of a housing 100, and the distance between another bearing groove 124 of a housing 100 and a shaft hole 121 of a housing 100 is smaller than the distance between a shaft hole 121 of a housing 100 and another shaft hole 122 of a housing 100. In this way, the space between a shaft hole 121 of a housing 100 and another shaft hole 122 of a housing 100 can be utilized, and an oil guide rib 130 can be set in the space between a shaft hole 121 of a housing 100 and another shaft hole 122 of a housing 100, and the oil guide rib 130 can collect the lubricating oil thrown out by the gear of an input shaft 311 of a parallel shaft reducer.

[0072] In addition, an oil guide rib 130 is arranged to be inclined relative to the horizontal plane, so that, under the action of gravity, an oil guide rib 130 can guide the lubricating oil collected by it to another shaft hole 122 of a housing 100, so as to realize passive cooling and passive lubrication of the gears and bearings of another input shaft 321 of another parallel shaft reducer connected to the generator transmission. Therefore, not only can the cooling and lubrication effects of the gears and bearings of each shaft of another parallel shaft reducer connected to the generator transmission be improved, but also the production cost of the extended-range powertrain 10 can be reduced. In turn, the performance of the extended-range powertrain 10 is improved.

[0073] In some embodiments, Figure 4 As shown, an oil guide rib 130 is arranged between an axial hole 121 of a housing 100 and another axial hole 122 of a housing 100 at intervals, and the distance between one end 131 of an oil guide rib 130 and an axial hole 121 of a housing 100 along the extension direction of an oil guide rib 130 is greater than the distance between the other end 132 of an oil guide rib 130 and another axial hole 122 of a housing 100. In this way, an oil guide rib 130 can better guide the collected lubricating oil to another axial hole 122 of a housing 100, further improving the passive cooling and passive lubrication of the gears and bearings of each shaft of another parallel axis reducer.

[0074] In some embodiments, Figure 4 As shown, the other side of one housing 100 includes a protrusion 150, and the side of the protrusion 150 facing the other shaft hole 122 of one housing 100 includes an oil outlet 151, and the outlet of the oil outlet 151 faces the other shaft hole 122 of one housing 100, and one oil guide rib 130 is used to collect the lubricating oil output from the oil outlet 151. In this way, one oil guide rib 130 can centrally collect the lubricating oil output from the oil outlet 151, so that one oil guide rib 130 collects more lubricating oil.

[0075] In some embodiments, the length of the protrusion 150 is less than the length of one oil guide rib 130, the distance between the protrusion 150 and one shaft hole 121 of one housing 100 is greater than the distance between the other end 132 of one oil guide rib 130 and another shaft hole 122 of one housing 100, and the distance between the oil outlet 151 and one shaft hole 121 of one housing 100 is greater than the distance between one end 131 of one oil guide rib 130 and one shaft hole 121 of one housing 100. In this way, not only can the production cost of the protrusion 150 be reduced, but also the amount of lubricating oil collected by one oil guide rib 130 and output by the oil outlet 151 can be further increased.

[0076] In some embodiments, the protrusion 150 includes a through hole, and the through hole of the protrusion 150 is used to connect the oil outlet 151 and the oil outlet of the oil pump. In this way, it can be ensured that the amount of lubricating oil output from the oil outlet 151 of the protrusion 150 is relatively sufficient. In turn, it is ensured that the amount of lubricating oil required by the gears and bearings of each shaft of the other parallel axis reducer is sufficient.

[0077] In some embodiments, the cross-sectional area of ​​the oil outlet 151 is smaller than the cross-sectional area of ​​the through hole of the protrusion 150. In this way, the lubricating oil flows from the through hole of the protrusion 150 into the oil outlet 151, and the flow rate of the lubricating oil is relatively large. In turn, the efficiency of collecting lubricating oil by one oil guide rib 130 can be improved.

[0078] In some embodiments, one end 131 of an oil guide rib 130 is bent toward one side of the oil outlet 151. In this way, the lubricating oil collected by the oil guide rib 130 can be prevented from flowing back along the one end 131 of the oil guide rib 130.

[0079] In some embodiments, Figure 4 and Figure 5 As shown, the other side of one housing 100 further includes an oil collecting rib 140, and one oil collecting rib 140 of one housing 100 is arranged at intervals with one oil guiding rib 130, and the distance between one end 141 of one oil collecting rib 140 of one housing 100 and one shaft hole 121 of one housing 100 is greater than the distance between the other end 142 of one oil collecting rib 140 of one housing 100 and another shaft hole 122 of one housing 100. Among them, the distance between the other end 142 of one oil collecting rib 140 of one housing 100 and another shaft hole 122 of one housing 100 is less than or equal to the distance between the other end 132 of one oil guiding rib 130 and another shaft hole 122 of one housing 100, and one oil collecting rib 140 of one housing 100 is used to collect lubricating oil flowing out of the other end 132 of one oil guiding rib 130.

[0080] In this way, by only setting an oil collecting rib 140 near an oil guide rib 130 on the other side of a housing 100, the lubricating oil collected by an oil guide rib 130 can be guided to an oil collecting rib 140, further reducing the production cost of the extended-range powertrain 10.

[0081] In addition, the other end 142 of an oil collecting rib 140 of a shell 100 is closer to the other axial hole 122 of a shell 100 than the other end 132 of an oil guiding rib 130. In this way, an oil collecting rib 140 of a shell 100 can not only collect the lubricating oil flowing out of the other end 132 of an oil guiding rib 130, but also the amount of lubricating oil collected by an oil collecting rib 140 of a shell 100 from the other end 132 of an oil guiding rib 130 is relatively large.

[0082] In some embodiments, Figure 4 and Figure 5As shown, one end 141 of an oil collecting rib 140 of a housing 100 faces another bearing groove 124 of a housing 100, and the interval between one end 141 of an oil collecting rib 140 of a housing 100 and an oil guiding rib 130 is greater than the interval between the other end 142 of an oil collecting rib 140 of a housing 100 and an oil guiding rib 130, and an oil collecting rib 140 of a housing 100 is also used to guide the lubricating oil collected by an oil collecting rib 140 to another bearing groove. In this way, under the action of gravity, an oil collecting rib 140 of a housing 100 can smoothly guide the lubricating oil collected by it to another bearing groove 124 of a housing 100, thereby realizing passive cooling and passive lubrication of the gears and bearings of another output shaft 322 of another parallel shaft reducer connected to the generator.

[0083] In some embodiments, an oil guide rib 130 includes a through hole, and the through hole is used to flow out the lubricating oil collected by the oil guide rib 130. The through hole of the oil guide rib 130 penetrates the oil guide rib 130 along the thickness direction of the oil guide rib 130. In this way, the oil guide rib 130 can not only guide the lubricating oil collected by it to another shaft hole 122 of the housing 100, but also guide part of the lubricating oil collected by the oil guide rib 130 to other components through the through hole of the oil guide rib 130, thereby increasing the cooling and lubrication effects of other components.

[0084] It should be noted that the thickness direction of an oil guiding rib 130 can be understood as the height direction of an oil guiding rib 130 .

[0085] In some embodiments, the distance between the through hole of an oil guide rib 130 and one end 131 of an oil guide rib 130 is greater than or equal to the distance between the through hole of an oil guide rib 130 and the other end 132 of an oil guide rib 130. Relative to an axial hole 121 of a housing 100, the through hole of an oil guide rib 130 is arranged on a side closer to another axial hole 122 of a housing 100. In this way, an oil guide rib 130 can guide part of the lubricating oil collected by it to another bearing groove 124 located between an axial hole 121 and another axial hole 122 of a housing 100 through the through hole of an oil guide rib 130, so as to realize the passive cooling and passive lubrication of the gears and bearings of another output shaft 322 of another parallel shaft reducer connected to the generator. Furthermore, not only can the cooling and lubrication effects of the gears and bearings of each shaft of another parallel shaft reducer connected to the generator be further improved, but also the production cost of the extended-range powertrain 10 can be further reduced.

[0086] In some embodiments, the through hole of one oil guide rib 130 is connected to one end surface of one oil guide rib 130. One end surface of one oil guide rib 130 faces the other housing 200, and the distance between one end surface of one oil guide rib 130 and the other housing 200 along the width direction of one oil guide rib 130 is less than or equal to the distance between each bearing groove or each shaft hole of one housing 100 and the other housing 200. In this way, one oil guide rib 130 can guide all the lubricating oil collected by it to the other shaft hole 122 or the other bearing groove 124 of one housing 100 as much as possible.

[0087] It should be noted that the width direction of an oil guide rib 130 can be understood as the width direction of a shell 100 .

[0088] In some embodiments, the other side of a housing 100 further includes another oil collecting rib, and the other oil collecting rib of a housing 100 is arranged adjacent to an oil guiding rib 130. The distance between one end of the other oil collecting rib of a housing 100 and an axial hole 121 of a housing 100 is less than or equal to the distance between the through hole of an oil guiding rib 130 and an axial hole 121 of a housing 100, and the distance between the other end of the other oil collecting rib of a housing 100 and another axial hole 122 of a housing 100 is less than or equal to the distance between the through hole of an oil guiding rib 130 and another axial hole 122 of a housing 100. The other oil collecting rib of a housing 100 is used to collect lubricating oil flowing out of the through hole of an oil guiding rib 130.

[0089] In this way, by only setting another oil collecting rib near an oil guide rib 130 on the other side of a housing 100, the lubricating oil flowing out of the through hole of an oil guide rib 130 can be guided to another oil collecting rib of a housing 100, thereby further reducing the production cost of the extended-range powertrain 10.

[0090] In addition, another oil collecting rib of a shell 100 is located below the through hole of an oil guide rib 130. In this way, another oil collecting rib of a shell 100 can not only collect the lubricating oil flowing out of the through hole of an oil guide rib 130, but also the amount of lubricating oil collected by another oil collecting rib of a shell 100 from the through hole of an oil guide rib 130 is relatively large.

[0091] In some embodiments, the other end of another oil collecting rib of one housing 100 faces another bearing groove 124 of one housing 100, and the interval between one end of another oil collecting rib of one housing 100 and one oil guiding rib 130 is smaller than the interval between the other end of another oil collecting rib of one housing 100 and one oil guiding rib 130, and another oil collecting rib of one housing 100 is also used to guide the lubricating oil collected by another oil collecting rib to another bearing groove 124 of one housing 100. In this way, under the action of gravity, another oil collecting rib of one housing 100 can smoothly guide the lubricating oil collected by it to another bearing groove 124 of one housing 100, thereby realizing passive cooling and passive lubrication of the gears and bearings of another output shaft 322 of another parallel shaft reducer transmission-connected to the generator.

[0092] In some embodiments, there is no gap between one end of another oil collecting rib of one housing 100 and one oil guiding rib 130. In this way, the amount of lubricating oil collected by another oil collecting rib of one housing 100 from the through hole of one oil guiding rib 130 can be increased.

[0093] In some embodiments, the middle portion of another oil collecting rib of one housing 100 is bent toward a side away from another shaft hole 122 of one housing 100. In this way, the impact force of the lubricating oil flowing out of the through hole of one oil guide rib 130 on another oil collecting rib of one housing 100 can be reduced.

[0094] In some embodiments, Figure 4 and Figure 5 As shown, the other side of a housing 100 further includes a groove 160, and the groove 160 of a housing 100 is used to connect to another shaft hole 122 of a housing 100, and the groove 160 of a housing 100 is used to introduce the collected lubricating oil into another shaft hole 122 of a housing 100. In this way, under the action of gravity, the lubricating oil can flow along the groove 160 of a housing 100 into another shaft hole 122 of a housing 100, thereby realizing passive cooling and passive lubrication of the gears and bearings of another input shaft 321 of another parallel shaft reducer connected to the generator transmission. Thereby, the production cost of the extended-range powertrain 10 can be further reduced.

[0095] In some embodiments, Figure 4 and Figure 5As shown, a groove 160 of a housing 100 is arranged on a side of the other end 142 of an oil collecting rib 140 of a housing 100 away from one end 141 of an oil collecting rib 140, and a groove 160 of a housing 100 is arranged adjacent to the other end 142 of an oil collecting rib 140 of a housing 100, and a groove 160 of a housing 100 is spaced from the other end 142 of an oil collecting rib 140 of a housing 100. In this way, a portion of the lubricating oil flowing out of the other end 132 of an oil guiding rib 130 can flow into a groove 160 of a housing 100 along the space between a groove 160 of a housing 100 and the other end 142 of an oil collecting rib 140, and then flow into another shaft hole 122 of a housing 100. Another portion of the lubricating oil flowing out of the other end 132 of an oil guiding rib 130 can flow to an oil collecting rib 140 along the space between an oil guiding rib 130 and an oil collecting rib 140.

[0096] In some embodiments, such as Figure 4 and Figure 5 As shown, a groove 160 of a housing 100 is arranged on a side of another bearing groove 124 of a housing 100 facing an oil guide rib 130 of a housing 100, and a groove 160 of a housing 100 is arranged to be spaced from the other end 132 of an oil guide rib 130 of a housing 100. In this way, the lubricating oil flowing out of the other end 132 of an oil guide rib 130 can flow into a groove 160 of a housing 100, and then flow into another shaft hole 122 of a housing 100.

[0097] In some embodiments, such as Figure 4 and Figure 5 As shown, the other side of one housing 100 also includes another groove 170, and the other groove 170 of one housing 100 is used to connect to another bearing groove 124 of one housing 100, and the other groove 170 of one housing 100 is used to introduce the collected lubricating oil into another bearing groove 124 of one housing 100. In this way, under the action of gravity, the lubricating oil can flow along the other groove 170 of one housing 100 into another bearing groove 124 of one housing 100, so as to realize the passive cooling and passive lubrication of the gears and bearings of another output shaft 322 of another parallel shaft reducer connected to the generator transmission. Thereby, the production cost of the extended-range powertrain 10 can be further reduced.

[0098] In some embodiments, such as Figure 4 and Figure 5As shown, another groove 170 of one housing 100 is arranged on a side of one end 141 of one oil collecting rib 140 of one housing 100 away from the other end 142 of one oil collecting rib 140, and one groove 160 of one housing 100 is arranged adjacent to one end 141 of one oil collecting rib 140 of one housing 100. In this way, the lubricating oil collected by one oil collecting rib 140 of one housing 100 can flow into another groove 170 of one housing 100 along the gap of one end 141 of one oil collecting rib 140 of one housing 100, and then flow into another bearing groove 124 of one housing 100.

[0099] In some embodiments, Figure 4 and Figure 5 As shown, another groove 170 of one housing 100 is arranged on one side of another oil collecting rib of one housing 100 facing another shaft hole 122 of one housing 100, and another groove 170 of one housing 100 is arranged adjacent to another oil collecting rib of one housing 100. In this way, the lubricating oil collected by another oil collecting rib of one housing 100 can flow into another groove 170 of one housing 100, and then flow into another bearing groove 124 of one housing 100.

[0100] like Figure 6 As shown, one side of the other housing 200 includes a bearing groove 211, and the bearing groove 211 of the other housing 200 is used to communicate with the reducer accommodating chamber, and the bearing groove 211 of the other housing 200 is also used to fix another bearing 3113 of an input shaft 311. In this way, the two ends of an input shaft 311 can be supported by an axial hole 121 of one housing 100 and a bearing groove 211 of the other housing 200.

[0101] like Figure 6 As shown, one side of the other housing 200 further includes another bearing groove 212, and the other bearing groove 212 of the other housing 200 is used to communicate with the reducer accommodating chamber, and the other bearing groove 212 of the other housing 200 is also used to fix the other bearing 3213 of the other input shaft 321. In this way, the other two ends of the other input shaft 321 can be supported by the other shaft hole 122 of the one housing 100 and the other bearing groove 212 of the other housing 200.

[0102] like Figure 6As shown, one side of the other housing 200 further includes another bearing groove 213, the other bearing groove 213 of the other housing 200 is used to communicate with the reducer accommodating chamber, and the other bearing groove 213 of the other housing 200 is also used to fix another bearing 3124 of an intermediate shaft 312. In this way, the two ends of an intermediate shaft 312 can be supported by a bearing groove 123 of one housing 100 and a bearing groove 213 of the other housing 200.

[0103] like Figure 6 As shown, one side of the other housing 200 further includes an axial hole 214, and the axial hole 214 of the other housing 200 is used to communicate with the reducer accommodating chamber, and the axial hole 214 of the other housing 200 is also used to fix the other bearing 3222 of the other output shaft 322. In this way, the other bearing groove 124 of the one housing 100 and the axial hole 214 of the other housing 200 can support both ends of the other output shaft 322.

[0104] Among them, Figure 6 As shown, the distance between another bearing groove 213 of another housing 200 and another bearing groove 212 of another housing 200 is greater than the distance between one bearing groove 211 of another housing 200 and another bearing groove 212 of another housing 200, and the distance between one shaft hole 214 of another housing 200 and one bearing groove 211 of another housing 200 is smaller than the distance between one bearing groove 211 of another housing 200 and another bearing groove 212 of another housing 200. In other words, another bearing groove 213 of another housing 200 is arranged on the side of one bearing groove 211 of another housing 200 away from another bearing groove 212 of another housing 200, and one shaft hole 214 of another housing 200 is arranged on the side of another bearing groove 212 of another housing 200 close to one bearing groove 211 of another housing 200.

[0105] In some embodiments, in order to make the structure of the extended-range powertrain compact, the outer groove wall of another bearing groove 213 of another housing 200 may be tangent to the hole wall of a bearing groove 211 of another housing 200. Similarly, an axial hole 214 of another housing 200 may be tangent to the hole wall of another bearing groove 212 of another housing 200.

[0106] like Figure 6As shown, one side of the other housing 200 further includes another shaft hole 215, and the other shaft hole 215 of the other housing 200 is used to communicate with the reducer accommodating chamber, and the other shaft hole 215 of the other housing 200 is also used to fix another bearing 3132 of an output shaft 313. In this way, the two ends of the other output shaft 313 can be supported by another shaft hole 125 of one housing 100 and another shaft hole 215 of the other housing 200.

[0107] In some embodiments, such as Figure 6 As shown, one side of the other housing 200 includes another oil guide rib 220, and the other oil guide rib 220 and the one oil guide rib 220 are combined to form an oil guide groove along the width direction of the one oil guide rib 130. In this way, the other oil guide rib 220 of the other housing 200 can collect the lubricating oil of the one oil guide rib 130 of the one housing 100. Furthermore, the lubricating oil collected by the other oil guide rib 220 of the other housing 200 can lubricate the components on one side of the other housing 200. Thus, the cooling and lubrication effects of the gears and bearings of each shaft of each reducer of the extended-range powertrain 10 are improved, and the production cost of the extended-range powertrain 10 is reduced.

[0108] like Figure 6 As shown, the extension direction of another oil guide rib 220 is from a bearing groove 211 of another housing 100 toward another bearing groove 212 of another housing 100. The extension direction of another oil guide rib 220 is inclined relative to the horizontal plane to guide the lubricating oil collected by another oil guide rib 220 to another bearing groove 212 of another housing 100, so as to realize the passive cooling and passive lubrication of the gears and bearings of another input shaft 321 of another parallel shaft reducer connected to the generator transmission. Therefore, it can not only improve the cooling and lubrication effect of the gears and bearings of each shaft of another parallel shaft reducer connected to the generator transmission, but also reduce the production cost of the extended-range powertrain 10. In turn, the performance of the extended-range powertrain 10 is improved.

[0109] It should be noted that the extension direction of the other oil guiding rib 220 can be understood as the length direction of the other oil guiding rib 220 .

[0110] In some embodiments, such as Figure 6 As shown, along the gravity direction, one end 221 of another oil guide rib 220 is higher than the other end 222 of another oil guide rib 220. In this way, another oil guide rib 220 can guide the collected lubricating oil to another bearing groove 212 of another housing 200.

[0111] In some embodiments, such as Figure 6As shown, another oil guide rib 220 is arranged between a bearing groove 211 of another housing 100 and another bearing groove 212 of another housing 100 at intervals, and the distance between one end 221 of another oil guide rib 220 and a bearing groove 211 of another housing 100 along the extension direction of another oil guide rib 220 is greater than the distance between the other end 222 of another oil guide rib 220 and another bearing groove 212 of another housing 100. In this way, another oil guide rib 220 can better guide the collected lubricating oil to another bearing groove 212 of another housing 100, further improving the passive cooling and passive lubrication of the gears and bearings of each shaft of another parallel axis reducer.

[0112] In some embodiments, the extension direction of another oil guide rib 220 is the same as the extension direction of one oil guide rib 130, and the acute angle between the extension direction of the oil guide groove and the horizontal plane is in the range of [15 degrees, 30 degrees]. In this way, the efficiency of the oil guide groove in collecting lubricating oil and the efficiency of the oil guide groove in guiding the collected lubricating oil to another shaft hole 122 of one housing 100 can be improved.

[0113] In some embodiments, one end 221 of another oil guide rib 220 is bent toward one side of the oil outlet 151. In this way, the lubricating oil collected by another oil guide rib 220 can be prevented from flowing back along one end 221 of another oil guide rib 220.

[0114] In some embodiments, the length of the other oil guide rib 220 is equal to the length of the one oil guide rib 130. In this way, the efficiency of the oil guide groove formed by the combination of the two oil guide ribs in collecting lubricating oil and the efficiency of the oil guide groove in guiding the collected lubricating oil to the other shaft hole 122 of the housing 100 can be improved.

[0115] In some embodiments, the other side of the other housing 200 further includes an oil collecting rib, the oil collecting rib of the other housing 200 is arranged at intervals with the other oil guiding rib 220, and the distance between one end of the oil collecting rib of the other housing 200 and a bearing groove 211 of the other housing 200 is greater than the distance between the other end of the oil collecting rib of the other housing 200 and another bearing groove 212 of the other housing 200. The distance between the other end of the oil collecting rib of the other housing 200 and another bearing groove 212 of the other housing 200 is less than or equal to the distance between the other end 222 of the other oil guiding rib 220 and another bearing groove 212 of the other housing 200, and the oil collecting rib of the other housing 200 is used to collect the lubricating oil flowing out of the other end 222 of the other oil guiding rib 220.

[0116] In this way, by only setting an oil collecting rib near another oil guide rib 220 on the other side of the other shell 200, the lubricating oil collected by the other oil guide rib 220 can be guided to the one oil collecting rib, further reducing the production cost of the extended-range powertrain 10.

[0117] In addition, the other end of an oil collecting rib of the other shell 200 is closer to the other bearing groove 212 of the other shell 200 than the other end 222 of the other oil guiding rib 220. In this way, an oil collecting rib of the other shell 200 can not only collect the lubricating oil flowing out of the other end 222 of the other oil guiding rib 220, but also the amount of lubricating oil collected by an oil collecting rib of the other shell 200 from the other end 222 of the other oil guiding rib 220 is relatively large.

[0118] In some embodiments, one end of an oil collecting rib of another housing 200 faces an axial hole 214 of another housing 200, and the interval between one end of an oil collecting rib of another housing 200 and another oil guiding rib 220 is greater than the interval between the other end of an oil collecting rib of another housing 200 and another oil guiding rib 220, and an oil collecting rib of another housing 200 is also used to guide the lubricating oil collected by an oil collecting rib to another bearing groove. In this way, under the action of gravity, an oil collecting rib of another housing 200 can smoothly guide the lubricating oil collected by it to an axial hole 214 of another housing 200, thereby realizing passive cooling and passive lubrication of the gears and bearings of another output shaft 322 of another parallel shaft reducer connected to the generator.

[0119] In some embodiments, such as Figure 6 and Figure 7 As shown, the other oil guide rib 220 includes a through hole T, and the through hole T of the other oil guide rib 220 is used to flow out the lubricating oil collected by the other oil guide rib 220. The through hole T of the other oil guide rib 220 penetrates the other oil guide rib 220 along the thickness direction of the other oil guide rib 220. In this way, the other oil guide rib 220 can not only guide the lubricating oil collected by it to the other bearing groove 212 of the other housing 200, but also guide part of the lubricating oil collected by the other oil guide rib 220 to other components through the through hole T of the other oil guide rib 220, thereby increasing the cooling and lubricating effects of other components.

[0120] It should be noted that the thickness direction of another oil guiding rib 220 can be understood as the height direction of another oil guiding rib 220 .

[0121] In some embodiments, such as Figure 6 and Figure 7As shown, the distance between the through hole T of another oil guide rib 220 and one end 221 of another oil guide rib 220 is greater than or equal to the distance between the through hole T of another oil guide rib 220 and the other end 222 of another oil guide rib 220. Relative to a bearing groove 211 of another housing 200, the through hole T of another oil guide rib 220 is arranged on a side closer to another bearing groove 212 of another housing 200. In this way, another oil guide rib 220 can guide part of the lubricating oil collected by it to an axial hole 214 located between a bearing groove 211 and another bearing groove 212 of another housing 200 through the through hole T of another oil guide rib 220, so as to realize the passive cooling and passive lubrication of the gears and bearings of another output shaft 322 of another parallel shaft reducer connected to the generator. Furthermore, not only can the cooling and lubrication effects of the gears and bearings of each shaft of another parallel shaft reducer connected to the generator be further improved, but also the production cost of the extended-range powertrain 10 can be further reduced.

[0122] In some embodiments, such as Figure 6 and Figure 7 As shown, the through hole T of the other oil guide rib 220 is connected to one end surface of the other oil guide rib 220. Among them, one end surface of the other oil guide rib 220 faces one housing 100, and the distance between one end surface of the other oil guide rib 220 and the other housing 200 along the width direction of the other oil guide rib 220 is less than or equal to the distance between each bearing groove or each shaft hole of the other housing 200 and the other housing 200. In this way, the other oil guide rib 220 can guide all the lubricating oil collected by it to the other bearing groove 212 or one shaft hole 214 of the other housing 200 as much as possible.

[0123] It should be noted that the width direction of another oil guiding rib 220 can be understood as the width direction of another shell 200 .

[0124] In some embodiments, such as Figure 6 and Figure 7As shown, the other side of the other housing 200 further includes another oil collecting rib 230, and the other oil collecting rib 230 of the other housing 200 is arranged adjacent to the other oil guiding rib 220. The distance between one end 231 of the other oil collecting rib 230 of the other housing 200 and a bearing groove 211 of the other housing 200 is less than or equal to the distance between the through hole T of the other oil guiding rib 220 and a bearing groove 211 of the other housing 200, and the distance between the other end 232 of the other oil collecting rib 230 of the other housing 200 and another bearing groove 212 of the other housing 200 is less than or equal to the distance between the through hole T of the other oil guiding rib 220 and another bearing groove 212 of the other housing 200. The other oil collecting rib 230 of the other housing 200 is used to collect the lubricating oil flowing out of the through hole T of the other oil guiding rib 220.

[0125] In this way, by only setting another oil collecting rib 230 near another oil guide rib 220 on the other side of another shell 200, the lubricating oil flowing out of the through hole T of another oil guide rib 220 can be guided to another oil collecting rib 230 of another shell 200, thereby further reducing the production cost of the extended-range powertrain 10.

[0126] In addition, another oil collecting rib 230 of another shell 200 is located below the through hole T of another oil guiding rib 220, so that another oil collecting rib 230 of another shell 200 can not only collect the lubricating oil flowing out of the through hole T of another oil guiding rib 220, but also another oil collecting rib 230 of another shell 200 collects a relatively large amount of lubricating oil from the through hole T of another oil guiding rib 220.

[0127] In some embodiments, Figure 6 and Figure 7 As shown, the other end 232 of the other oil collecting rib 230 of the other housing 200 faces an axial hole 214 of the other housing 200, and the interval between one end 231 of the other oil collecting rib 230 of the other housing 200 and the other oil guiding rib 220 is smaller than the interval between the other end 232 of the other oil collecting rib 230 of the other housing 200 and the other oil guiding rib 220, and the other oil collecting rib 230 of the other housing 200 is also used to guide the lubricating oil collected by the other oil collecting rib 230 to an axial hole 214 of the other housing 200. In this way, under the action of gravity, the other oil collecting rib 230 of the other housing 200 can smoothly guide the lubricating oil collected by it to an axial hole 214 of the other housing 200, thereby realizing passive cooling and passive lubrication of the gears and bearings of the other output shaft 322 of the other parallel shaft reducer connected to the generator.

[0128] In some embodiments, Figure 6 and Figure 7As shown, there is no gap between one end 231 of another oil collecting rib 230 of another housing 200 and another oil guiding rib 220. In this way, the amount of lubricating oil collected by another oil collecting rib 230 of another housing 200 from the through hole T of another oil guiding rib 220 can be increased.

[0129] In some embodiments, Figure 6 and Figure 7 As shown, the middle portion of the other oil collecting rib 230 of the other housing 200 is bent toward the side away from the other bearing groove 212 of the other housing 200. In this way, the impact force of the lubricating oil flowing out of the through hole T of the other oil guide rib 220 on the other oil collecting rib 230 of the other housing 200 can be reduced.

[0130] In some embodiments, Figure 6 and Figure 7 As shown, the other side of the other housing 200 also includes a groove 240, and the groove 240 of the other housing 200 is used to connect to the other bearing groove 212 of the other housing 200, and the groove 240 of the other housing 200 is used to introduce the collected lubricating oil into the other bearing groove 212 of the other housing 200. In this way, under the action of gravity, the lubricating oil can flow along the groove 240 of the other housing 200 into the other bearing groove 212 of the other housing 200, so as to realize the passive cooling and passive lubrication of the gears and bearings of the other input shaft 321 of the other parallel shaft reducer connected to the generator transmission. Thereby, the production cost of the extended-range powertrain 10 can be further reduced.

[0131] In some embodiments, Figure 6 and Figure 7 As shown, a groove 240 of another housing 200 is arranged on the side of the other end of an oil collecting rib of another housing 200 away from one end of an oil collecting rib, and a groove 240 of another housing 200 is arranged adjacent to the other end of an oil collecting rib of another housing 200, and a groove 240 of another housing 200 is spaced from the other end of an oil collecting rib of another housing 200. In this way, a portion of the lubricating oil flowing out of the other end 222 of another oil guiding rib 220 can flow into a groove 240 of another housing 200 along the space between a groove 240 of another housing 200 and the other end of an oil collecting rib, and then flow into another bearing groove 212 of another housing 200. Another portion of the lubricating oil flowing out of the other end 222 of another oil guiding rib 220 can flow to an oil collecting rib along the space between another oil guiding rib 220 and an oil collecting rib.

[0132] In some embodiments, Figure 6 and Figure 7As shown, a groove 240 of another housing 200 is arranged on a side of an axial hole 214 of another housing 200 facing another oil guide rib 220 of another housing 200, and a groove 240 of another housing 200 is arranged to be spaced from the other end 222 of another oil guide rib 220 of another housing 200. In this way, the lubricating oil flowing out of the other end 222 of another oil guide rib 220 can flow into a groove 240 of another housing 200, and then flow into another bearing groove 212 of another housing 200.

[0133] In some embodiments, such as Figure 6 and Figure 7 As shown, the other side of the other housing 200 also includes another groove 250, and the other groove 250 of the other housing 200 is used to connect to an axial hole 214 of the other housing 200, and the other groove 250 of the other housing 200 is used to introduce the collected lubricating oil into an axial hole 214 of the other housing 200. In this way, under the action of gravity, the lubricating oil can flow along the other groove 250 of the other housing 200 into an axial hole 214 of the other housing 200, so as to realize the passive cooling and passive lubrication of the gears and bearings of the other output shaft 322 of the other parallel shaft reducer connected to the generator transmission. Thereby, the production cost of the extended-range powertrain 10 can be further reduced.

[0134] In some embodiments, such as Figure 6 and Figure 7 As shown, another groove 250 of another housing 200 is arranged on a side of one end of an oil collecting rib of another housing 200 away from the other end of an oil collecting rib, and a groove 240 of another housing 200 is arranged adjacent to one end of an oil collecting rib of another housing 200. In this way, the lubricating oil collected by an oil collecting rib of another housing 200 can flow into another groove 250 of another housing 200 along the gap at one end of an oil collecting rib of another housing 200, and then flow into an axial hole 214 of another housing 200.

[0135] In some embodiments, another groove 250 of another housing 200 is arranged on a side of another oil collecting rib 230 of another housing 200 facing another bearing groove 212 of another housing 200, and another groove 250 of another housing 200 is arranged adjacent to another oil collecting rib 230 of another housing 200. In this way, the lubricating oil collected by another oil collecting rib 230 of another housing 200 can flow into another groove 250 of another housing 200, and then flow into an axial hole 214 of another housing 200.

[0136] It should be noted that the axial direction of the extended-range powertrain 10 can also be understood as the axial direction of the motor, the axial direction of the generator or the axial direction of the parallel-axis reducer. The axial direction of the motor is the axial direction of the motor shaft of the motor, the axial direction of the generator is the axial direction of the motor shaft of the generator, and the axial direction of the parallel-axis reducer is the axial direction of each shaft of the parallel-axis reducer.

[0137] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An extended-range powertrain, characterized in that: The extended-range powertrain includes two housings, one side of one housing includes two motor cavities arranged in parallel, the two motor cavities are used to fix a stator of a motor and a stator of a generator respectively, the other side of the one housing is used to enclose the other housing to form a reducer accommodating cavity, the reducer accommodating cavity is used to accommodate two parallel-axis reducers arranged in parallel, one parallel-axis reducer includes an input shaft, an intermediate shaft and an output shaft, the other parallel-axis reducer includes another input shaft and another output shaft, and the other side of the one housing includes: Two shaft holes, one shaft hole is used to connect the reducer accommodating chamber and one of the motor chambers and a bearing for fixing the one input shaft, and the other shaft hole is used to connect the reducer accommodating chamber and another of the motor chambers and a bearing for fixing the other input shaft; Two bearing grooves, one bearing groove is used to fix a bearing of the one intermediate shaft, and the other bearing groove is used to fix a bearing of the other output shaft, the distance between the one bearing groove and the other shaft hole is greater than the distance between the two shaft holes, and the distance between the other bearing groove and the one shaft hole is less than the distance between the two shaft holes; An oil guide rib, the extension direction of the oil guide rib is from the one shaft hole toward the other shaft hole, and the extension direction of the oil guide rib is inclined relative to the horizontal plane to guide the lubricating oil collected by the oil guide rib to the other shaft hole.

2. The extended-range powertrain according to claim 1, characterized in that: The oil guide ribs are arranged between the one shaft hole and the other shaft hole at intervals, and along the extension direction of the oil guide ribs, the distance between one end of the oil guide rib and the one shaft hole is greater than the distance between the other end of the oil guide rib and the other shaft hole.

3. The extended-range powertrain according to claim 1 or 2, characterized in that: The other side of the shell includes a protrusion, and the side of the protrusion facing the other shaft hole includes an oil outlet, the outlet of the oil outlet faces the other shaft hole, and the oil guide rib is used to collect the lubricating oil output by the oil outlet.

4. The extended-range powertrain according to claim 3, characterized in that: The length of the protrusion is smaller than the length of the oil guide rib, the distance between the protrusion and the axial hole is larger than the distance between the other end of the oil guide rib and the other axial hole, and the distance between the oil outlet and the axial hole is larger than the distance between the one end of the oil guide rib and the axial hole.

5. The extended-range powertrain according to any one of claims 1 to 4, characterized in that: The one oil guide rib comprises a through hole, and the one through hole is used to flow out the lubricating oil collected by the one oil guide rib, wherein: The one through hole penetrates the one oil-conducting rib along the thickness direction of the one oil-conducting rib; The distance between the one through hole and the one end of the one oil guide rib is greater than or equal to the distance between the one through hole and the other end of the one oil guide rib.

6. The extended-range powertrain according to claim 5, characterized in that: The through hole is connected to an end surface of the oil guide rib, wherein: One end face of the oil guide rib faces the other shell, and along the width direction of the oil guide rib, the distance between the one end face of the oil guide rib and the other shell is less than or equal to the distance between each bearing groove or each shaft hole and the other shell.

7. The extended-range powertrain according to any one of claims 1 to 6, characterized in that: The other side of the one housing further includes an oil collecting rib, the one oil collecting rib is arranged at intervals with the one oil guiding rib, the distance between one end of the one oil collecting rib and the one shaft hole is greater than the distance between the other end of the one oil collecting rib and the other shaft hole, wherein: The distance between the other end of the oil collecting rib and the other shaft hole is less than or equal to the distance between the other end of the oil guiding rib and the other shaft hole, and the oil collecting rib is used to collect the lubricating oil flowing out of the other end of the oil guiding rib.

8. The extended-range powertrain according to claim 7, characterized in that: One end of the oil collecting rib faces the other bearing groove, and the distance between one end of the oil collecting rib and the oil guiding rib is greater than the distance between the other end of the oil collecting rib and the oil guiding rib. The oil collecting rib is also used to guide the lubricating oil collected by the oil collecting rib to the other bearing groove.

9. The extended-range powertrain according to any one of claims 1 to 8, characterized in that: The other side of the one housing further includes another oil collecting rib, and the other oil collecting rib is arranged adjacent to the one oil guiding rib, wherein: The distance between one end of the other oil collecting rib and the one axial hole is less than or equal to the distance between a through hole of the one oil guiding rib and the one axial hole, the distance between the other end of the other oil collecting rib and the other axial hole is less than or equal to the distance between a through hole of the one oil guiding rib and the other axial hole, and the other oil collecting rib is used to collect the lubricating oil flowing out of the through hole of the one oil guiding rib.

10. The extended-range powertrain according to claim 9, characterized in that: The other end of the other oil collecting rib faces the other bearing groove, and the distance between one end of the other oil collecting rib and the one oil guiding rib is smaller than the distance between the other end of the other oil collecting rib and the one oil guiding rib. The other oil collecting rib is also used to guide the lubricating oil collected by the other oil collecting rib to the other bearing groove.

11. The extended-range powertrain according to any one of claims 1 to 10, characterized in that: The other side of the one housing further comprises two grooves, and the extension direction of each groove is inclined relative to the horizontal plane, wherein: One of the grooves is used to communicate with the other shaft hole and to guide the collected lubricating oil into the other shaft hole; Another of the grooves is used to communicate with the other bearing groove and to guide the collected lubricating oil into the other bearing.

12. The extended-range powertrain according to any one of claims 1 to 11, characterized in that: One side of the other shell faces the other side of the one shell, and one side of the other shell includes another oil guide rib. Along the width direction of the one oil guide rib, the other oil guide rib is combined with the one oil guide rib to form an oil guide groove.

13. The extended-range powertrain according to claim 12, characterized in that: The extending direction of the other oil guiding rib is the same as the extending direction of the one oil guiding rib, and the acute angle between the extending direction of the oil guiding groove and the horizontal plane is in the range of [15 degrees, 30 degrees].

14. The extended-range powertrain according to claim 12 or 13, characterized in that: One end of the other oil guide rib and one end of the one oil guide rib are respectively bent toward one side of the one oil outlet; The length of the other oil guiding rib is equal to the length of the one oil guiding rib.

15. An extended-range electric vehicle, characterized in that: The extended-range electric vehicle comprises wheels, a battery pack, and an extended-range powertrain according to any one of claims 1 to 14, wherein the extended-range powertrain is used to receive power from the battery pack and drive the wheels.

Images