Torque transmission device, power transmission system and vehicle

Abstract

The utility model discloses a torque transmission device, a power transmission system and a vehicle, and relates to the technical field of vehicle transmission, the torque transmission device comprises a differential mechanism, a first vector gear and an opening and closing assembly, the differential mechanism is provided with a first power output shaft and a second power output shaft, the first power output shaft is used for connecting a first wheel, and the second power output shaft is used for connecting a second wheel; the second power output shaft is used for connecting a second wheel. The first vector gear is coaxially connected with the first power output shaft, and the separating and combining assembly comprises a first matching gear, a second matching gear and a first clutch; at least two inner gears in the separating and combining assembly are meshed. The first clutch is connected between the first matching gear and the second matching gear. The problem that the vehicle integration level is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle transmission, and in particular to a torque transmission device, a power transmission system and a vehicle. Background Art

[0002] In order to effectively transfer the torque generated by the engine to the wheels, the vehicle needs to be equipped with a torque transfer device. However, in the related art, the torque transfer device includes a large number of gears, which not only reduces the integration of the entire vehicle, but also increases the production cost of the vehicle. Utility Model Content

[0003] The present application provides a torque transmission device, a power transmission system and a vehicle, which are used to solve the problem of a large number of parts and low integration of a vehicle torque transmission device in the related art.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

[0005] In a first aspect, an embodiment of the present application provides a torque transmission device, which includes a differential, wherein the differential has a first power output shaft and a second power output shaft, wherein the first power output shaft is used to connect to a first wheel, and the second power output shaft is used to connect to a second wheel.

[0006] The torque transmission device also includes a first vector gear and a split assembly. The first vector gear is coaxially connected to the first power output shaft. The split assembly includes a first matching gear, a second matching gear and a first clutch. At least two internal gears are meshed in the split assembly.

[0007] The first clutch is connected between the first mating gear and the second mating gear.

[0008] The present application reduces the space occupied by the torque transmission device in the entire power system by setting the matching relationship of the gear components in the torque transmission device to an internal meshing transmission relationship, thereby improving the overall integration of the entire torque vectoring device.

[0009] Specifically, the first mating gear and the first vector gear are set to an internal meshing transmission relationship, or the second mating gear and the second vector gear are set to an internal meshing transmission relationship, or the mating relationship between the first mating gear and the first vector gear and the mating relationship between the second mating gear and the second vector gear are both set to an internal meshing transmission relationship. The internal meshing gear design makes the gear structure more compact, and the two gears can be arranged more compactly in the torque transmission device, which can more effectively utilize the space. Therefore, the present application improves the space utilization of the entire power transmission system on the vehicle while improving the integration of the torque transmission device.

[0010] In some embodiments, the torque transmission device also includes a third vector gear and a splitter assembly, the third vector gear is coaxially connected to the first power output shaft, the splitter assembly includes a support frame, a third mating gear and a second clutch; the third mating gear is internally meshed with the third vector gear; the second clutch is connected between the second mating gear and the third mating gear.

[0011] In some embodiments, the support frame includes a first frame portion, a second frame portion, and a third frame portion, the first frame portion is connected to the second mating gear, the second frame portion is connected between the first frame portion and the first mating gear, and the third frame portion is connected between the first frame portion and the third mating gear. The first clutch is disposed on the second frame portion, and the second clutch is disposed on the third frame portion.

[0012] In some embodiments, a ratio of the number of teeth of the first vector gear to the first mating gear is greater than 1; and a ratio of the number of teeth of the third vector gear to the third mating gear is less than 1.

[0013] In some embodiments, the vehicle in the present application further includes a controller, the controller is connected to the first clutch, and the controller is connected to the second clutch.

[0014] In the second aspect, an embodiment of the present application provides a power transmission system, including the above-mentioned torque transmission device, and also including a driving device and a rotating member, the rotating member is transmission-connected to the driving device, the driving device is used to drive the rotating member to rotate, the differential has a power output shaft, the power output shaft is connected to the rotating member, and the rotating member is coaxially connected to the second vector gear.

[0015] In some embodiments, along the axial direction of the first power output shaft, the first vector gear, the second vector gear, and the third vector gear are located on the same side of the differential.

[0016] In some embodiments, the driving device includes a power member and a reducer, the power member includes a third power output shaft, the first-stage driving gear is connected to the third power output shaft, the reducer is connected to the power member, and the rotating output end of the reducer forms a rotating member.

[0017] In some embodiments, the power transmission system also includes an oil supply device, which is applied to the torque transmission device. The oil supply device includes an oil cooling member, a first oil outlet member and a second oil outlet member. The oil cooling member includes a first oil outlet end and a second oil outlet end. The oil inlet end of the first oil outlet member is connected to the first oil outlet end, and the oil outlet end of the first oil outlet member supplies oil to the first clutch. The oil inlet end of the second oil outlet member is connected to the second oil outlet end, and the oil outlet end of the second oil outlet member supplies oil to the second clutch.

[0018] In some embodiments, the oil cooling member further includes a third oil outlet, the oil supply device further includes a third oil outlet, the oil inlet of the third oil outlet is connected to the third oil outlet, and the oil outlet of the third oil outlet is connected to the cold oil pipeline of the vehicle.

[0019] In some embodiments, the first clutch includes a first hydraulic cylinder, an oil outlet end of the first oil outlet member is connected to the first hydraulic cylinder, and the first oil outlet member supplies oil to the first hydraulic cylinder.

[0020] The second clutch comprises a second hydraulic cylinder, an oil outlet end of a second oil outlet member is in communication with the second hydraulic cylinder, and the second oil outlet member supplies oil to the second hydraulic cylinder.

[0021] In a third aspect, an embodiment of the present application provides a vehicle, including a first wheel and a second wheel, wherein the first wheel is connected to a first power output shaft, and the second wheel is connected to a second power output shaft.

[0022] The vehicle in the present application also includes the above-mentioned power transmission system.

[0023] It should be noted that the technical effects brought about by any implementation method of the second aspect and the third aspect can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here.

[0024] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 One of the transmission schematic diagrams of a torque transmission device provided in an embodiment of the present application;

[0026] Figure 2 A second transmission schematic diagram of a torque transmission device provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of an oil circuit of an oil supply device provided in an embodiment of the present application;

[0028] Figure 4 The third transmission schematic diagram of a torque transmission device provided in an embodiment of the present application;

[0029] Figure 5 A fourth transmission schematic diagram of a torque transmission device provided in an embodiment of the present application;

[0030] Figure 6 A fifth transmission schematic diagram of a torque transmission device provided in an embodiment of the present application;

[0031] Figure 7 A sixth transmission schematic diagram of a torque transmission device provided in an embodiment of the present application;

[0032] Figure 8 This is the seventh transmission schematic diagram of a torque transmission device provided in an embodiment of the present application.

[0033] Reference numerals:

[0034] 1-power piece; 2-differential; 3-torque transmission device; 301-first vector gear; 302-second vector gear; 303-first matching gear; 304-second matching gear; 305-first clutch; 306-third vector gear; 307-third matching gear; 308-first frame part; 309-second frame part; 310-third frame part; 311-second clutch; 4-first driving gear; 5-first driven gear; 6-second driving gear; 7-second driven gear; 8-oil collecting tank; 9-filter; 10-check valve; 11-electric oil pump; 12-oil cooler; 13-motor stator cooling and lubrication pipeline; 14-motor rotor cooling and lubrication pipeline; 15-reduction mechanism cooling and lubrication pipeline; 16-first solenoid valve; 17-second solenoid valve; 18-first oil pressure sensor; 19-second oil pressure sensor; 20-first wheel; 21-second wheel. DETAILED DESCRIPTION

[0035] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0036] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0038] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, when describing pipelines or channels, the "connected" and "connected" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0039] In the present application, the description of "vertical", "parallel" or "same direction" is not an absolute limiting condition, but means that a vertical or parallel structural setting can be achieved within a preset error range and the corresponding preset effect can be achieved. For example, "vertical" includes absolute vertical and approximate vertical, and the acceptable deviation range of approximate vertical can also be, for example, a deviation within 5°. "Parallel" includes absolute parallel and approximate parallel, and the acceptable deviation range of approximate parallel can also be, for example, a deviation within 5°. "Same direction" includes absolute same direction and approximate same direction, and the acceptable deviation range of approximate same direction can also be, for example, a deviation within 5°.

[0040] In the embodiments of the present application, the words "exemplarily" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

[0041] In order to effectively transmit the torque generated by the vehicle during the transmission process to the wheels, the vehicle includes a torque transmission device 3 for transmitting power.

[0042] However, the torque transmission device 3 in the related art has a large number of transmission components, high cost, and low integration, which will lead to reduced energy conversion efficiency, weakened vehicle power output, and increased energy consumption.

[0043] In order to solve the above problems, an embodiment of the present application provides a vehicle, which can be a fuel vehicle, an electric vehicle, a hybrid vehicle, a gas vehicle, a methanol vehicle, a solar vehicle, etc.

[0044] For example, the vehicle may be a passenger vehicle such as a sedan, a sport utility vehicle (SUV), a multi-purpose vehicle (MPV), or a bus, a truck, a semi-trailer, etc. This application does not impose any specific restrictions on this.

[0045] For ease of understanding, the following content of this application is described using an electric vehicle as an example.

[0046] In some embodiments, see Figure 1 The vehicle in this application also includes wheels. Wheels are the core component of vehicle driving and control, and play multiple functions such as load-bearing, transmission, suspension, steering, etc., which have an important impact on the performance, safety and comfort of the vehicle.

[0047] The present application does not limit the number of wheels, and the number of wheels can be four, six or eight. For the sake of convenience.

[0048] For example, see Figure 1 In the present application, the wheels include a first wheel 20 and a second wheel 21 .

[0049] It should be noted that the first wheel 20 and the second wheel 21 may be the front wheels of the vehicle or the rear wheels of the vehicle, and this application does not limit this.

[0050] In some embodiments, the vehicle in the present application includes a power transmission system, which is responsible for transmitting the power generated by the power components of the vehicle to the wheels to drive the vehicle to move.

[0051] In some embodiments, see Figure 1 The power transmission system in the present application includes a torque transmission device, which is used to transmit torque during vehicle driving.

[0052] In some embodiments, the power transmission system in the present application includes a driving device, and the power generated by the driving device is transmitted to the wheels of the vehicle so that the wheels of the vehicle can obtain power to rotate, thereby realizing the driving function of the vehicle.

[0053] In some embodiments, the power transmission system in the present application further includes a rotating member, which is transmission-connected to a driving device, and the driving device is used to drive the rotating member to rotate.

[0054] In some embodiments, see Figure 1 The driving device in the present application includes a power member 1 , and the power member 1 includes a third power output shaft, and the third power output shaft is used for power transmission of the power member 1 .

[0055] Exemplarily, the power component 1 is a motor.

[0056] In some embodiments, the motor in the present application includes a motor stator and a motor rotor. The motor stator generates a rotating magnetic field, and the motor rotor rotates under the action of the magnetic field. The magnetic field interaction between the motor stator and the motor rotor causes the motor to generate torque, thereby driving the motor to output mechanical power to the third power output shaft to achieve power transmission.

[0057] It can be understood that when the vehicle is a fuel vehicle, the power component 1 can be an engine.

[0058] For example, the power transmission system in the present application is a parallel-axis electric drive structure, or the power transmission system in the present application is a coaxial electric drive structure. This application is not limited to this.

[0059] Among them, parallel-axis electric drive refers to a design method in which the axis of the motor rotor is arranged parallel to the axis of the vehicle, while coaxial electric drive refers to a design method in which the axis of the motor rotor is arranged coaxially with the axis of the vehicle.

[0060] In some embodiments, see Figure 1 The driving device in the present application also includes a reducer, which is connected to the power member 1, and the rotating output end of the reducer forms a rotating member.

[0061] Specifically, the reducer includes a primary driving gear 4, a primary driven gear 5, a secondary driving gear 6 and a secondary driven gear 7. The primary driving gear 4 is connected to the third power output shaft, the primary driven gear 5 is meshed with and transmission-connected to the primary driving gear 4, the secondary driving gear 6 is transmission-connected to the primary driven gear 5, the primary driven gear 5 can drive the secondary driving gear 6 to rotate, the secondary driven gear 7 is meshed with and transmission-connected to the secondary driving gear 6, and the rotation output end of the reducer is the secondary driven gear 7.

[0062] Specifically, the power output by the third power output shaft is sequentially transmitted from the first-stage driving gear 4 to the first-stage driven gear 5, then from the first-stage driven gear 5 to the second-stage driving gear 6, and then from the second-stage driving gear 6 to the second-stage driven gear 7. In this way, the power output by the third power output shaft realizes multi-stage transmission.

[0063] Among them, the first-stage driving gear 4, the first-stage driven gear 5, the second-stage driving gear 6 and the second-stage driven gear 7 are of different sizes. The specific sizes can be set differently according to the vehicle model, and this application does not limit this.

[0064] In this way, by changing the rotation speed and torque through the above-mentioned combination of gears of different sizes, a power output suitable for vehicle driving can be achieved, thereby improving the performance and efficiency of the vehicle.

[0065] It should be noted that the power transmission of the third power output shaft in the present application is not limited to the above-mentioned transmission method. The gears connected to the third power output shaft can also include three-stage driving gears and three-stage driven gears, which is not limited in the present application.

[0066] In some embodiments, see Figure 1 The vehicle in the present application further includes a differential 2, and the secondary driven gear 7 is drivingly connected to the differential 2. The differential 2 is disposed between the first wheel 20 and the second wheel 21, and the differential 2 can transmit the power of the secondary driven gear 7 to the first wheel 20 and the second wheel 21, and the differential 2 is used to balance the speed difference between the first wheel 20 and the second wheel 21 when the vehicle is traveling.

[0067] The differential 2 has a power input shaft, a first power output shaft and a second power output shaft. The power input shaft is connected to the rotating member. The first power output shaft is used to connect to the first wheel 20 , and the second power output shaft is used to connect to the second wheel 21 .

[0068] For example, see Figure 1 In order to save vehicle space, the rotating part in this application is a secondary driven gear 7.

[0069] In some embodiments, see Figure 1 Combined with Figure 2 The torque transmission device 3 in the present application also includes a first vector gear 301, a second vector gear 302 and a splitting assembly. The first vector gear 301 is coaxially connected to the first power output shaft, and the second vector gear 302 is coaxially connected to the rotating member, that is, the second vector gear 302 is coaxially connected to the secondary driven gear 7, and the secondary driven gear 7 can transmit power to the second vector gear 302.

[0070] In some embodiments, see Figure 1 Combined with Figure 2 The split-and-engagement assembly includes a first matching gear 303, a second matching gear 304, and a first clutch 305. The first clutch 305 is connected between the first matching gear 303 and the second matching gear 304. There are at least two gears meshing in the split-and-engagement assembly.

[0071] Exemplarily, the first mating gear 303 is internally meshed with the first vector gear 301 , and the second mating gear 304 is externally meshed with the second vector gear 302 .

[0072] Exemplarily, the first matching gear 303 is externally meshed with the first vector gear 301 , and the second matching gear 304 is internally meshed with the second vector gear 302 .

[0073] Exemplarily, the first mating gear 303 is internally meshed with the first vector gear 301 , and the second mating gear 304 is internally meshed with the second vector gear 302 .

[0074] Among them, internal meshing is a type of meshing in gear transmission, also known as internal meshing or internal meshing transmission. In internal meshing, the gear teeth of the two gears mesh with each other internally, that is, the tooth surfaces of the gears mesh inwards.

[0075] The internal meshing gear method can make the layout of the gear transmission components more compact. Since the internal meshing gear is designed to mesh with the gear tooth surface facing inward, the size of the overall transmission device can be effectively reduced, allowing the transmission system to have a greater torque transmission capacity within a limited space.

[0076] In addition, internal gear transmissions are usually able to achieve large transmission ratios, i.e. the speed and torque ratio between the input shaft and the output shaft.

[0077] At the same time, the internal meshing gear transmission has a tight meshing mode, which can reduce the gap and clearance in the transmission, making the transmission more stable and reliable. At the same time, the internal meshing mode can also reduce the noise of the gear transmission system and improve the driving comfort of the vehicle.

[0078] In addition, internal gear transmission usually has higher transmission efficiency because the gears are more closely meshed and the friction loss is smaller. This can reduce energy loss during power transmission and improve the vehicle's fuel economy and performance.

[0079] It can be understood that by setting the transmission mode of the first matching gear 303 and the first vector gear 301 to an internally meshing gear transmission mode, and setting the transmission mode of the second matching gear 304 and the second vector gear 302 to an internally meshing gear transmission mode, the structure of the entire torque transmission device 3 can be made compact, and at the same time, the torque transmission device 3 can have a larger transmission ratio.

[0080] As a result, the vehicle space occupied by the power transmission system in the present application is further reduced, and thus the cost of the vehicle provided by the embodiment of the present application is further reduced.

[0081] In addition, the present application can achieve coupling and disconnection of the first mating gear 303 and the second mating gear 304 through the first clutch 305, so that the torque transmission device 3 in the present application can meet the torque distribution requirements for the first wheel 20 and the second wheel 21 when the vehicle turns.

[0082] Specifically, when the first mating gear 303 is coupled with the second mating gear 304 through the first clutch 305, the torque during the vehicle's driving is transmitted to the second vector gear 302 through the rotating member, the second vector gear 302 transmits the torque to the second mating gear 304, the second mating gear 304 transmits the torque to the first mating gear 303, the first mating gear 303 transmits the torque to the first vector gear 301, and the first vector gear 301 transmits power to the first wheel 20 through the first power shaft.

[0083] In some embodiments, the vehicle in the present application further includes a connecting shell, which is fixedly connected between the rotating member and the second vector gear 302, and the differential 2 is accommodated in the connecting shell.

[0084] In this way, the second vector gear 302 and the connection shell in the present application can be rigidly connected, wherein the rigid connection refers to a rigid connection between the second vector gear 302 and the connection shell.

[0085] Through this connection method, the present application ensures a firm connection between the second vector gear 302 and the connecting shell, so that the second vector gear 302 and the connecting shell become a whole and bear force and torque together.

[0086] Through the hard connection between the second vector gear 302 and the connecting shell, the torque generated by the vehicle power part 1 can be effectively transferred to the driving wheels of the vehicle, ensuring the normal driving of the vehicle.

[0087] In some embodiments, see Figure 1 Combined with Figure 2 The torque transmission device 3 in the present application further includes a third vector gear 306 , and the third vector gear 306 is coaxially connected to the first power output shaft.

[0088] In some embodiments, see Figure 1 Combined with Figure 2 The separation and combination assembly in the present application also includes a support frame, a third mating gear 307 and a second clutch 311. In order to further improve the integration of the torque transmission device 3, the third mating gear 307 is internally meshed with the third vector gear 306, and the second clutch 311 is connected between the second mating gear 304 and the third mating gear 307.

[0089] Among them, see Figure 1 Combined with Figure 2The supporting frame includes a first frame portion 308, a second frame portion 309 and a third frame portion 310. The first frame portion 308 is connected to the second mating gear 304, the second frame portion 309 is connected between the first frame portion 308 and the first mating gear 303, the third frame portion 310 is connected between the first frame portion 308 and the third mating gear 307, the first clutch 305 is arranged in the second frame portion 309, the second clutch 311 is arranged in the third frame portion 310, and the second clutch 311 is arranged between the third mating gear 307 and the second mating gear 304.

[0090] Specifically, when the second mating gear 304 is coupled with the third mating gear 307 through the second clutch 311, the torque during vehicle driving is transmitted to the third vector gear 306 through the differential 2, the third vector gear 306 transmits the torque to the third mating gear 307, the third mating gear 307 transmits the torque to the second mating gear 304, the second mating gear 304 transmits the torque to the differential 2, and the differential 2 transmits the torque to the second wheel 21 through the second power output shaft.

[0091] Through the above-mentioned arrangement, in the present application, the first mating gear 303, the second mating gear 304, the first clutch 305, and the second clutch 311 can be integrated into a whole through the first frame part 308, the second frame part 309, and the third frame part 310, which can reduce the connecting parts and supporting parts between the various components, and effectively reduce the size and volume of the entire torque transmission device 3, making the whole vehicle more compact and reducing the cost of vehicle production.

[0092] Furthermore, the differential 2 in the present application further includes a vector connection block, and the second mating gear 304 is hard-connected to the vector connection block, wherein the hard connection refers to a rigid connection between the second mating gear 304 and the vector connection block.

[0093] In some embodiments, a ratio of the number of teeth of the first vector gear 301 to the first mating gear 303 is greater than 1. A ratio of the number of teeth of the third vector gear 306 to the third mating gear 307 is less than 1.

[0094] It can be understood that when the tooth ratio between the mating gears is greater than 1 or less than 1, the transmission direction is different, that is, the torque transmission direction between the first vector gear 301 and the first mating gear 303 and the torque transmission direction between the third vector gear 306 and the third mating gear 307 in the present application are opposite.

[0095] The first wheel 20 and the second wheel 21 are located on both sides of the vehicle along the width direction thereof. Through the above arrangement, the torque transmission device 3 in the present application can transmit torque to the first wheel 20 and the second wheel 21 which are arranged at opposite positions along the width direction of the vehicle.

[0096] In some embodiments, in the present application, along the axial direction of the first power output shaft, the first vector gear 301 , the second vector gear 302 , and the third vector gear 306 are located on the same side of the differential 2 .

[0097] It is understandable that the torque transmission device 3 in the present application is located on the same side of the differential 2, which can reduce the number of connectors and pipes between the components of the torque transmission device 3 and simplify the structure of the entire torque transmission device. This can reduce the number and complexity of components, reduce the possibility of failure, and improve the reliability and stability of the torque transmission device.

[0098] In some embodiments, the vehicle in the present application further includes a controller, which is connected to the first clutch 305 and the second clutch 311 .

[0099] When driving on a curved road, the outer wheel has a relatively high rotation speed. If better traction on the curve is desired, the outer wheel needs more power. The torque transmission device 3 in the present application can transfer part of the power of the slow-rotating wheel (inner wheel) to the fast-rotating wheel (outer wheel), thereby helping the vehicle obtain better traction on the curve.

[0100] For ease of understanding, taking the left and right wheels as an example, when making a left turn, the right wheel of the vehicle needs to bear a larger torque, while the left wheel needs to bear a relatively smaller torque; when making a right turn, the left wheel needs to bear a larger torque, while the right wheel needs to bear a relatively smaller torque.

[0101] It should be understood that the "left and right" here is a relative position description, which can be the left and right directions when the driver or passenger is driving or riding in a vehicle, or the left and right directions when the driver or passenger is facing the vehicle. This application does not limit this.

[0102] For example, see Figure 1 Combined with Figure 2 as well as Figure 4 When the vehicle is traveling in a straight line, the controller controls the second clutch 311 to disconnect the second mating gear 304 from the third mating gear 307, and controls the first clutch 305 to disconnect the first mating gear 303 from the second mating gear 304. The power generated by the power member 1 is transmitted to the first wheel 20 and the second wheel 21 along the path A and the path B through the differential 2 in a 1:1 ratio.

[0103] It should be noted that when the vehicle is turning or driving straight, the differential 2 will transfer the power it receives along the Figure 4 The A path and the B path shown in the figure transmit power to the first wheel 20 and the second wheel 21 in a ratio of 1:1.

[0104] In another exemplary embodiment, when the vehicle turns, the controller first obtains the steering direction of the vehicle, see Figure 1 Combined with Figure 2 as well as Figure 5 When the vehicle turns toward the first wheel 20, the controller controls the first clutch 305 to couple the first mating gear 303 with the second mating gear 304, and controls the second clutch 311 to disconnect the second mating gear 304 from the third mating gear 307. During the vehicle driving process, the torque is transmitted along the rotating member. Figure 5 The path A1 shown is transmitted to the second vector gear 302, the second vector gear 302 transmits the torque to the second mating gear 304, the second mating gear 304 transmits the torque to the first mating gear 303, the first mating gear 303 transmits the torque to the first vector gear 301, and the first vector gear 301 transmits the power to the first wheel 20 through the first power shaft.

[0105] In another exemplary embodiment, when the vehicle turns toward the direction of the second wheel 21, the controller obtains the steering direction of the vehicle, see Figure 1 Combined with Figure 2 as well as Figure 6 The controller controls the second clutch 311 to couple the second mating gear 304 with the third mating gear 307, and controls the first clutch 305 to disconnect the first mating gear 303 with the second mating gear 304. During the vehicle driving process, the torque is Figure 6 The path A2 shown flows back to the differential 2, and then the torque is transmitted to the second wheel 21 through the differential 2 via the second power output shaft. Specifically, part of the torque transmitted along the path A is transmitted to the third matching gear 307 via the third vector gear 306, and the third matching gear 307 transmits the torque to the second matching gear 304. The second matching gear 304 transmits the torque to the differential 2, and the differential 2 transmits the torque to the second wheel 21 via the second power output shaft.

[0106] In addition, the differential 2 in the present application may be located at the front axle or the rear axle of the vehicle, and the present application does not limit this.

[0107] In some embodiments, Figure 7 What is shown in FIG. 1 is a steady-state schematic diagram of the vehicle 1 in the dual-motor driving mode of the torque transmission device 3 in the present application.

[0108] In some embodiments, Figure 8 What is shown in FIG. 1 is a steady-state schematic diagram of the vehicle 1 in the engine driving mode of the torque transmission device 3 in the present application, wherein the differential 2 is located at the rear axle of the vehicle.

[0109] It should be noted that the vehicle-1 steady state generally refers to the vehicle being in a stable state at the lowest speed, the smallest turning radius, and the maximum lateral acceleration. In this state, the vehicle remains at the extreme control limit, the extreme control performance is demonstrated, and the vehicle does not lose control.

[0110] In some embodiments, see Figure 3 The power transmission system includes an oil supply device and the above-mentioned torque transmission device, and the oil supply device is applied to the torque transmission device.

[0111] The oil supply device in the present application includes an oil cooling member, a first oil outlet member and a second oil outlet member. The oil cooling member includes a first oil outlet end and a second oil outlet end. The oil inlet end of the first oil outlet member is connected to the first oil outlet end, and the oil outlet end of the first oil outlet member supplies oil to the first clutch 305. The oil inlet end of the second oil outlet member is connected to the second oil outlet end, and the oil outlet end of the second oil outlet member supplies oil to the second clutch 311.

[0112] Specifically, in the present application, the first clutch 305 includes a first hydraulic cylinder, an oil outlet end of a first oil outlet is connected to the first hydraulic cylinder, and the first oil outlet supplies oil to the first hydraulic cylinder.

[0113] The second clutch 311 includes a second hydraulic cylinder. The oil outlet end of the second oil outlet is connected to the second hydraulic cylinder, and the second oil outlet supplies oil to the second hydraulic cylinder.

[0114] Further, see Figure 3 The first oil outlet is provided with a first solenoid valve 16, and the second oil outlet is provided with a second solenoid valve 17. The controller in the present application is electrically connected to the first solenoid valve 16 and the second solenoid valve 17, respectively. When the first clutch 305 is working, the controller controls the first solenoid valve 16 to open. When the second clutch 311 is working, the controller controls the second solenoid valve 17 to open.

[0115] Further, see Figure 3 The first clutch 305 is provided with a first oil pressure sensor 18 , and the second clutch 311 is provided with a second oil pressure sensor 19 .

[0116] In some embodiments, the oil cooling component in the present application also includes a third oil outlet, the oil supply device also includes a third oil outlet, the oil inlet end of the third oil outlet is connected to the third oil outlet, the oil outlet end of the third oil outlet is connected to the cold oil pipeline of the vehicle, and cooling lubricating oil can be provided to the cooling and lubrication system of the vehicle through the third oil outlet.

[0117] For example, see Figure 3The vehicle's cooling and lubrication system includes a motor stator cooling and lubrication pipeline 13, a motor rotor cooling and lubrication pipeline 14, and a reduction mechanism cooling and lubrication pipeline 15. The third oil outlet end is provided with a plurality of third oil outlet pipelines, which are respectively connected to the motor stator cooling and lubrication pipeline 13, the motor rotor cooling and lubrication pipeline 14, and the reduction mechanism cooling and lubrication pipeline 15.

[0118] In some embodiments, see Figure 3 In the present application, the oil cooling component includes an oil collecting tank 8, a filter 9, a one-way valve 10, an electric oil pump 11 and an oil cooler 12 which are sequentially connected through an oil pipe. The oil in the oil collecting tank 8 flows to the oil cooler 12 through the filter 9 under the action of the one-way valve 10 and the electric oil pump 11, and is cooled by the oil cooler 12.

[0119] Exemplarily, the cooled oil flows to the first clutch 305 through the first oil outlet.

[0120] Exemplarily, the cooled oil flows to the second clutch 311 through the second oil outlet.

[0121] Exemplarily, the cooled oil flows to the cooling lubrication system of the vehicle through the third oil outlet.

[0122] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other changes to the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0123] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0124] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A torque transmission device, characterized in that: include: A differential (2), the differential (2) comprising a first power output shaft and a second power output shaft, the first power output shaft being used to connect to a first wheel (20), and the second power output shaft being used to connect to a second wheel (21); A first vector gear (301), the first vector gear (301) being coaxially connected to the first power output shaft; A split / engagement assembly, the split / engagement assembly comprising a first mating gear (303), a second mating gear (304) and a first clutch (305); at least two internal gears are meshed in the split / engagement assembly; The first clutch (305) is connected between the first mating gear (303) and the second mating gear (304).

2. The torque transmission device according to claim 1, characterized in that: Also includes: A third vector gear (306), the third vector gear (306) being coaxially connected to the first power output shaft; The split-and-engagement assembly further comprises a support frame, a third mating gear (307) and a second clutch (311); the third mating gear (307) is internally meshed with the third vector gear (306); and the second clutch (311) is connected between the second mating gear (304) and the third mating gear (307).

3. The torque transmission device according to claim 2, characterized in that: The support frame comprises a first frame portion (308), a second frame portion (309) and a third frame portion (310), wherein the first frame portion (308) is connected to the second mating gear (304), the second frame portion (309) is connected between the first frame portion (308) and the first mating gear (303), and the third frame portion (310) is connected between the first frame portion (308) and the third mating gear (307); The first clutch (305) is arranged on the second frame part (309), and the second clutch (311) is arranged on the third frame part (310).

4. The torque transmission device according to claim 2, characterized in that: The ratio of the number of teeth of the first vector gear (301) to the first matching gear (303) is greater than 1; and the ratio of the number of teeth of the third vector gear (306) to the third matching gear (307) is less than 1.

5. The torque transmission device according to any one of claims 2 to 4, characterized in that: Also includes: A controller is connected to the first clutch (305), and the controller is connected to the second clutch (311).

6. A power transmission system, characterized in that: include: The torque transmission device of any one of claims 2-5, comprising a second vector gear (302); Drive device; A rotating member is in transmission connection with the driving device, and the driving device is used to drive the rotating member to rotate; the differential (2) has a power input shaft, and the power input shaft is connected to the rotating member; the rotating member is coaxially connected to the second vector gear (302).

7. The power transmission system according to claim 6, characterized in that: Along the axial direction of the first power output shaft, the first vector gear (301), the second vector gear (302) and the third vector gear (306) are located on the same side of the differential (2).

8. The power transmission system according to claim 6, characterized in that: The driving device further comprises: A power member (1), the power member (1) comprising a third power output shaft; A reducer is connected to the power member (1), and the rotating output end of the reducer forms the rotating member.

9. The power transmission system according to claim 6, characterized in that: Also includes: A connecting shell, the connecting shell is fixedly connected between the rotating member and the second vector gear (302), and the differential (2) is accommodated in the connecting shell.

10. The power transmission system according to claim 6, characterized in that: It also includes an oil supply device, which is applied to the torque transmission device and includes: An oil cooling member, the oil cooling member comprising a first oil outlet end and a second oil outlet end; a first oil outlet member, wherein an oil inlet end of the first oil outlet member is connected to the first oil outlet end, and the oil outlet end of the first oil outlet member supplies oil to the first clutch (305); A second oil outlet member, wherein the oil inlet end of the second oil outlet member is connected to the second oil outlet end, and the oil outlet end of the second oil outlet member supplies oil to the second clutch (311).

11. The power transmission system according to claim 10, characterized in that: The oil cooling element further includes a third oil outlet, and the oil supply device further includes: A third oil outlet, the oil inlet end of the third oil outlet is communicated with the third oil outlet, and the oil outlet end of the third oil outlet is communicated with a cold oil pipeline of the vehicle.

12. The power transmission system according to claim 10, characterized in that: The first clutch (305) comprises a first hydraulic cylinder, an oil outlet end of the first oil outlet is connected to the first hydraulic cylinder, and the first oil outlet supplies oil to the first hydraulic cylinder; The second clutch (311) comprises a second hydraulic cylinder, an oil outlet end of the second oil outlet member is in communication with the second hydraulic cylinder, and the second oil outlet member supplies oil to the second hydraulic cylinder.

13. A vehicle, characterized in that: include: A power transmission system as claimed in any one of claims 6 to 12; A first wheel (20), the first wheel (20) being connected to a first power output shaft; A second wheel (21), wherein the second wheel (21) is connected to a second power output shaft.

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