Hybrid systems and automobiles

Abstract

This disclosure provides a hybrid system and an automobile, the hybrid system comprising an engine, a first motor, a planetary gear train, a first spindle and a second spindle, the first and second spindles being coaxially spaced apart, the first end of the first spindle being powered to the output shaft of the engine, and the second spindle being used to power the wheels, the planetary gear train comprising a sun gear, a plurality of planetary gears, planetary carriers, a ring gear and a brake, the ring gear being the same as the sun gear Arranged on the shaft, multiple planetary gears are positioned between the sun gear and the ring gear and mesh with the sun gear and the ring gear respectively, the planetary carrier is coaxially connected to the second end of the first main shaft, the sun gear is movably fitted outside the first main shaft, a brake is used to decelerate the sun gear, the ring gear is coaxially connected to the second main shaft, the planetary gear train is located within the rotor of the first motor, and the inner circumferential wall of the rotor of the first motor is connected to the outer circumferential wall of the ring gear. This disclosure can improve the problem that hybrid systems occupy a relatively large axial space.

Description

Technical Field

[0001] The present disclosure relates to the field of automotive technology, and more particularly, to hybrid systems and automobiles.

Background Art

[0002] Many conventional automobiles use fossil fuels (such as gasoline, diesel, etc.) to power the engine, and the exhaust gas emitted therefrom pollutes the environment. Therefore, it is an urgent task to replace fossil fuels with pollution-free new energy (such as electric energy) to power automobiles. Thus, new energy vehicles are the trend of future development.

Summary of the Invention

[0003] Embodiments of the present application ha Provide a hybrid system and an automobile. The technical solution is as follows.

[0004] In one aspect, embodiments of the present disclosure provide a hybrid system, the hybrid system including an engine, a first motor, a planetary gear train, a first main shaft, and a second main shaft, the first main shaft and the second main shaft being coaxially and spaced apart, a first end of the first main shaft being transmission-connected to an output shaft of the engine, the second main shaft being used for transmission-connection to a wheel, the planetary gear train including a sun gear, a plurality of planetary gears, a planetary carrier, a ring gear, and a brake, the ring gear being coaxially arranged with the sun gear, the plurality of planetary gears being located between the sun gear and the ring gear and meshing with the sun gear and the ring gear respectively, the planetary carrier being coaxially connected to a second end of the first main shaft, the sun gear being movably externally fitted outside the first main shaft, the brake being used for braking the sun gear, the ring gear being coaxially connected to the second main shaft, the planetary gear train being located within a rotor of the first motor, and an inner peripheral wall of the rotor of the first motor being connected to an outer peripheral wall of the ring gear.

[0005] In one embodiment of the present disclosure, the axial length of the ring gear is less than or equal to the axial length of the rotor of the first motor.

[0006] In another embodiment of the embodiments of the present disclosure, the hybrid system further includes a housing, wherein the first motor, the planetary gear train, and the second spindle are all located within the housing, the first spindle is movably inserted into the housing, the first end of the first spindle is located outside the housing, and the second end of the first spindle is located within the housing.

[0007] In another embodiment of the embodiments of the present disclosure, the planetary gear train further includes a first hollow shaft, the first hollow shaft being movably fitted outside the first main shaft, one end of the first hollow shaft being coaxially connected to the sun gear, the brake including a first steel plate and a first clutch plate, the outer peripheral wall of the first steel plate of the brake being connected to the inner wall of the housing, the first clutch plate of the brake being axially movably fitted outside the first hollow shaft, and the first clutch plate of the brake being circumferentially locked with the first hollow shaft.

[0008] In another embodiment of the embodiments of the present disclosure, the hybrid system further comprises a clutch, a gear train, and a third spindle, wherein the third spindle is distributed parallel to the second spindle, the clutch is connected to the input gears of the gear train and the second spindle, the output gears of the gear train are connected coaxially to the third spindle, and the third spindle is used for power transmission to a wheel.

[0009] In another embodiment of the embodiments of the present disclosure, the hybrid system further includes a second hollow shaft, the second hollow shaft being movably fitted outside the second spindle, the clutch including a clutch ring, a second steel plate, and a second clutch plate, the second steel plate and the second clutch plate both located within the clutch ring, the clutch ring being coaxially connected to the second spindle, the outer circumferential wall of the second steel plate being connected to the inner wall of the clutch ring, the second clutch plate being axially movably fitted outside the second hollow shaft, the second clutch plate being circumferentially locked with the second hollow shaft, and the input gears of the gear train being coaxially connected to one end of the second hollow shaft.

[0010] In another embodiment of the embodiments of the present disclosure, the hybrid system further includes a second motor and a first transmission gear, wherein the output shaft of the second motor is transmitted to the first transmission gear, and the first transmission gear meshes with the output gear of the gear train.

[0011] In another embodiment of the embodiments of the present disclosure, the hybrid system further includes a second drive gear and a differential, wherein the second drive gear is fixedly fitted outside the third spindle, the differential is transmitted to the second drive gear, and the third spindle is transmitted to a wheel by the differential.

[0012] In another embodiment of the embodiments of the present disclosure, the hybrid system further includes a power supply assembly, the power supply assembly including a battery and an inverter, the inverter being connected to the battery and the first motor, respectively.

[0013] In another embodiment, embodiments of the present disclosure provide an automobile, the automobile comprising a body and a hybrid system, the hybrid system located within the body, the hybrid system comprising an engine, a first motor, a planetary gear train, a first spindle and a second spindle, the first and second spindles distributed coaxially and spaced apart, the first end of the first spindle being powered to the output shaft of the engine, the second spindle being used to power the wheels, the planetary gear train comprising a sun gear, a plurality of planetary gears, planetary carriers, a ring gear and a brake, and the The ring gear is arranged coaxially with the sun gear, the plurality of planetary gears are located between the sun gear and the ring gear and mesh with the sun gear and the ring gear respectively, the planetary carrier is coaxially connected to the second end of the first main shaft, the sun gear is movably fitted outside the first main shaft, the brake is used to brake the sun gear, the ring gear is coaxially connected to the second main shaft, the planetary gear train is located within the rotor of the first motor, and the inner circumferential wall of the rotor of the first motor is connected to the outer circumferential wall of the ring gear.

[0014] In one embodiment of the present disclosure, the axial length of the ring gear is less than or equal to the axial length of the rotor of the first motor.

[0015] In another embodiment of the embodiments of the present disclosure, the hybrid system further includes a housing, wherein the first motor, the planetary gear train, and the second spindle are all located within the housing, the first spindle is movably inserted into the housing, the first end of the first spindle is located outside the housing, and the second end of the first spindle is located within the housing.

[0016] In another embodiment of the embodiments of the present disclosure, the planetary gear train further includes a first hollow shaft, the first hollow shaft being movably fitted outside the first main shaft, one end of the first hollow shaft being coaxially connected to the sun gear, the brake including a first steel plate and a first clutch plate, the outer peripheral wall of the first steel plate of the brake being connected to the inner wall of the housing, the first clutch plate of the brake being axially movably fitted outside the first hollow shaft, and the first clutch plate of the brake being circumferentially locked with the first hollow shaft.

[0017] In another embodiment of the embodiments of the present disclosure, the hybrid system further comprises a clutch, a gear train, and a third spindle, wherein the third spindle is distributed parallel to the second spindle, the clutch is connected to the input gears of the gear train and the second spindle, the output gears of the gear train are connected coaxially to the third spindle, and the third spindle is used for power transmission to a wheel.

[0018] In another embodiment of the embodiments of the present disclosure, the hybrid system further includes a second hollow shaft, the second hollow shaft being movably fitted outside the second spindle, the clutch including a clutch ring, a second steel plate, and a second clutch plate, the second steel plate and the second clutch plate both located within the clutch ring, the clutch ring being coaxially connected to the second spindle, the outer circumferential wall of the second steel plate being connected to the inner wall of the clutch ring, the second clutch plate being axially movably fitted outside the second hollow shaft, the second clutch plate being circumferentially locked with the second hollow shaft, and the input gears of the gear train being coaxially connected to one end of the second hollow shaft.

[0019] The beneficial effects of the technical proposals provided by the embodiments of this disclosure include at least the following: [Brief explanation of the drawing]

[0020] To more clearly explain the technical solution in the embodiments of this application, the necessary drawings used in the embodiments are briefly introduced below. Clearly, the drawings in the following description are only some embodiments of this application. For those skilled in the art, based on these drawings, other drawings can be further obtained without creative labor. [Figure 1] It is a schematic structural diagram of a hybrid system provided by an embodiment of the present disclosure. [Figure 2] It is a schematic energy transmission diagram of a hybrid system provided by an embodiment of the present disclosure. [Figure 3] It is a schematic energy transmission diagram of a hybrid system provided by an embodiment of the present disclosure. [Figure 4] It is a schematic energy transmission diagram of a hybrid system provided by an embodiment of the present disclosure. [Figure 5] It is a schematic energy transmission diagram of a hybrid system provided by an embodiment of the present disclosure. [Figure 6] It is a schematic energy transmission diagram of a hybrid system provided by an embodiment of the present disclosure.

Embodiments for Carrying Out the Invention

[0021] To make the objectives, technical solutions and advantages of this application clearer, the embodiments of this application will be described in more detail below in combination with the drawings.

[0022] In related technologies, a hybrid system typically includes an engine, a motor, and a gearbox, the gearbox containing a planetary gear train, a first spindle, and a second spindle. The transmission members of the planetary gear train include a sun gear, planetary gears, planetary carriers, and a ring gear, the first spindle is connected to one transmission member in the planetary gear train, and the second spindle is connected to another transmission member in the planetary gear train.

[0023] Because a relatively large number of power sources and transmission components are installed within the hybrid system, and each power source and transmission component must be mounted on either the first or second main spindle, a relatively long first or second main spindle is required. Furthermore, this results in the hybrid system occupying a relatively large axial space, which is disadvantageous for achieving a lightweight design for the hybrid system.

[0024] Figure 1 is a schematic structural diagram of a hybrid system provided by an embodiment of the present disclosure. As shown in Figure 1, the hybrid system includes an engine 10, a first motor 11, a planetary gear train 30, a first main shaft 21 and a second main shaft 22.

[0025] As shown in Figure 1, the first main shaft 21 and the second main shaft 22 are distributed coaxially with a gap between them. The first end of the first main shaft 21 is used to transmit power to the output shaft of the engine 10, and the second main shaft 22 is used to transmit power to the wheels.

[0026] As shown in Figure 1, the planetary gear train 30 includes a sun gear 31, a plurality of planetary gears 32, a planetary carrier 33, a ring gear 34, and a brake 35. The ring gear 34 is coaxially positioned with the sun gear 31, the plurality of planetary gears 32 are located between the sun gear 31 and the ring gear 34 and all mesh with the sun gear 31 and the ring gear 34, the planetary carrier 33 is coaxially connected to the second end of the first spindle 21, the sun gear 31 is movably fitted outside the first spindle 21, the brake 35 is used to brake the sun gear 31, and the ring gear 34 is coaxially connected to the second spindle 22.

[0027] As shown in Figure 1, the planetary gear train 30 is located inside the rotor 110 of the first motor 11, and the inner circumferential wall of the rotor 110 of the first motor 11 is connected to the outer circumferential wall of the ring gear 34.

[0028] The hybrid system provided by the embodiments of this disclosure includes an engine 10, a first motor 11, a planetary gear train 30, a first spindle 21, and a second spindle 22, wherein the planetary carriers 33 of the planetary gear train 30 are transmitted to the first spindle 21, and the ring gear 34 of the planetary gear train 30 is transmitted to the second spindle 22, so that power can be input from the planetary carriers 33 of the planetary gear train 30 and then transmitted by the planetary gear train 30 to the ring gear 34 of the planetary gear train 30 for output. The planetary gear train 30 is mounted inside the rotor 110 of the first motor 11, and the outer circumferential wall of the ring gear 34 of the planetary gear train 30 is connected to the inner circumferential wall of the rotor 110 of the first motor 11. In this way, by transmitting the power of the first motor 11 to the planetary gear train 30 via the ring gear 34, the power of the first motor 11 can be connected to the hybrid system. Furthermore, since the planetary gear train 30 is installed within the rotor 110 of the first motor 11, the axial space required for installing the planetary gear train 30 within the hybrid system is reduced. In this way, the axial dimensions of the hybrid system can be significantly reduced, improving the problem of the hybrid system occupying a relatively large axial space and enabling a lightweight design for the hybrid system.

[0029] Selectively, the axial length of the ring gear 34 is less than or equal to the axial length of the rotor 110 of the first motor 11. The ring gear 34 is a transmission member that surrounds the sun gear 31, planetary gears 32, and planetary carrier 33 in the planetary gear train 30. Therefore, the axial length of the ring gear 34 is greater than the axial lengths of the sun gear 31, planetary gears 32, and planetary carrier 33.

[0030] In the embodiments of this disclosure, in order to ensure that the planetary gear train 30 does not exceed the length of the rotor 110 of the first motor 11 in the axial direction, the axial length of the ring gear 34 is further limited to less than the axial length of the rotor 110 of the first motor 11, so that the planetary gear train 30 is completely enclosed within the rotor 110 of the first motor 11, thereby minimizing the space occupied by the planetary gear train 30 in the hybrid system.

[0031] Selectively, as shown in Figure 1, the hybrid system further includes a housing, the first motor 11, the planetary gear train 30 and the second spindle 22 all located within the housing, the first spindle 21 being movably inserted into the housing, the first end of the first spindle 21 located outside the housing and the second end of the first spindle 21 located within the housing.

[0032] In the above embodiment, the planetary gear train 30 is installed within the rotor 110 of the first motor 11, and the first motor 11 and the planetary gear train 30 constitute the overall structure. In this way, when installing the hybrid system, the first motor 11 and the planetary gear train 30 can be installed together in the housing, eliminating the need to install a separate mounting structure for the first motor 11 within the vehicle body space, which is advantageous in improving the assembly efficiency of the hybrid system.

[0033] Selectively, as shown in Figure 1, the planetary gear train 30 further includes a first hollow shaft 36 which is movably fitted onto the first main shaft 21, and one end of the first hollow shaft 36 is coaxially connected to the sun gear 31.

[0034] As shown in Figure 1, the brake 35 includes a first steel plate 351 and a first clutch plate 352, the outer peripheral wall of the first steel plate 351 of the brake 35 is connected to the inner wall of the housing, the first clutch plate 352 of the brake 35 is fitted axially movably outside the first hollow shaft 36 and the first clutch plate 352 of the brake 35 is locked circumferentially with the first hollow shaft 36.

[0035] For example, the inner wall of the housing is provided with locking slots that extend in the axial direction, and the outer circumferential wall of the first steel plate 351 of the brake 35 is provided with projections that can slide axially within the locking slots so that the first steel plate 351 is locked in the circumferential direction after it has been attached to the housing.

[0036] Exemplary, the outer wall of the first hollow shaft 36 is provided with an axially extending locking slot, and the inner wall of the first clutch plate 352 of the brake 35 is provided with a projection that can slide within the locking slot along the axial direction of the first hollow shaft 36 so that the first clutch plate 352 can be locked circumferentially with the first hollow shaft 36.

[0037] When it is necessary to control and brake the first brake 35, the drive unit controls and bonds the first steel plate 351 and the first clutch plate 352 together so as to fix the first hollow shaft 36 to the housing, thereby braking the sun gear 31 of the planetary gear train 30.

[0038] Selectively, as shown in Figure 1, the hybrid system further includes a clutch 50, a gear train 60, and a third spindle 23, the third spindle 23 being distributed parallel to the second spindle 22.

[0039] As shown in Figure 1, the clutch 50 is connected to the input gear of the gear train 60 and the second spindle 22, the output gear of the gear train 60 is coaxially connected to the third spindle 23, and the third spindle 23 is used to drive the wheels.

[0040] By installing the clutch 50, power transmission between the planetary gear train 30 and the wheels can be interrupted. When the engine 10 is controlled to output power to the first motor 11, and the first motor 11 is driven to generate electricity, the clutch 50 can be controlled and disengaged to fully transmit the power of the engine 10 to the first motor 11 and drive the first motor 11 to generate electricity. This prevents the transmission of power from the engine 10 to the wheels and prevents power loss.

[0041] Selectively, as shown in Figure 1, the hybrid system further includes a second hollow shaft 37, which is movably fitted outside the second main shaft 22.

[0042] As shown in Figure 1, the clutch 50 includes a clutch ring 403, a second steel plate 401, and a second clutch plate 402, both of which are located within the clutch ring 403, which is coaxially connected to the second main shaft 22, the outer circumferential wall of the second steel plate 401 of the clutch 50 is connected to the inner wall of the clutch ring 403, the second clutch plate 402 of the clutch 50 is fitted axially movably outside the second hollow shaft 37, and the second clutch plate 402 of the clutch 50 is circumferentially locked to the second hollow shaft 37.

[0043] As shown in Figure 1, the input gear of the gear train 60 is coaxially connected to one end of the second hollow shaft 37, and the output gear of the gear train 60 is coaxially connected to one end of the third main shaft 23, which is used to transmit power to the wheels.

[0044] For example, the inner wall of the clutch ring 403 is provided with an axially extending locking slot, and the outer circumferential wall of the second steel plate 401 of the clutch 50 is provided with a projection that can slide along the axial direction of the clutch ring 403 within the locking slot so that the second steel plate 401 is locked circumferentially after it has been attached to the clutch ring 403.

[0045] Exemplary, the outer wall of the second hollow shaft 37 is provided with an axially extending locking slot, and the inner wall of the second clutch plate 402 of the clutch 50 is provided with a projection that can slide within the locking slot along the axial direction of the second hollow shaft 37 so that the second clutch plate 402 can be locked circumferentially with the second hollow shaft 37.

[0046] When it is necessary to control and engage the clutch 50, the drive unit controls and bonds the second steel plate 401 and the second clutch plate 402 together, thereby transmitting power between the second hollow shaft 37 and the clutch ring 403. In this way, the power transmitted from the planetary gear train 30 to the clutch 50 is transmitted by the clutch 50 to the second hollow shaft 37, and then transmitted through the second hollow shaft 37 and the gear train 60 to the third main shaft 23. Finally, the power is transmitted by the third main shaft 23 to the wheels, thereby driving and rotating the wheels.

[0047] In the embodiments of this disclosure, each gear train 60 includes at least an input gear and an output gear, and power can be transmitted from the input gear to the output gear by the input gear being connected to the output gear.

[0048] Selectively, in the gear train 60, the input gear and the output gear may mesh directly with each other, or at least one additional connecting gear may be installed between the input gear and the output gear.

[0049] It should be explained that the exact number of gears to be installed within the gear train 60 can be determined according to the actual needs.

[0050] Selectively, as shown in Figure 1, the hybrid system further includes a second motor 12 and a first transmission gear 71, the output shaft of the second motor 12 being transmitted to the first transmission gear 71, and the first transmission gear 71 meshing with the output gear of the gear train 60.

[0051] Of these, the second motor 12 functions as a drive motor used to output power and propel the vehicle forward.

[0052] In the above embodiment, a second motor 12 is installed to enhance the power performance of the hybrid system. At the same time, the second motor 12 transmits power to the wheels by being connected to the third main shaft 23 by a gear train 60. In this way, the need to install another transmission mechanism separately for the second motor 12 is avoided, and the cost of the hybrid system can be effectively reduced.

[0053] Selectively, as shown in Figure 1, the hybrid system further includes a second transmission gear 72 and a differential 80, the second transmission gear 72 being fixedly fitted outside the third spindle 23, the differential 80 being driven by the second transmission gear 72, and the third spindle 23 being driven by the differential 80 to the wheels.

[0054] In the embodiments of this disclosure, the input gear of the differential gear 80 meshes with the second transmission gear 72, thereby receiving power transmitted from the third main shaft 23 to drive and rotate the wheel.

[0055] The differential 80 can rotate the wheels connected to its output shaft at different rotational speeds. When a vehicle turns, the turning radii of the vehicle's inner wheels and outer wheels are different, with the turning radius of the outer wheels being larger than that of the inner wheels. This requires that the rotational speed of the outer wheels be greater than that of the inner wheels during turning. The differential 80 can be used to rotate the two wheels at different rotational speeds, thereby achieving the difference in rotational speeds between the two wheels.

[0056] Selectively, as shown in Figure 1, the hybrid system further includes a power supply assembly 90, which includes a battery 91 and an inverter 92, the inverter 92 being connected to the battery 91 and the first motor 11, respectively.

[0057] Exemplary, the power supply assembly 90 includes two inverters 92, each connected to a battery 91, with the first motor 11 connected to one of the two inverters 92 and the second motor 12 connected to the other of the two inverters 92.

[0058] By installing two inverters 92, one is used to connect the battery 91 to the first motor 11, and the other is used to connect the battery 91 to the second motor 12. The battery 91 is a rechargeable battery 91, and the inverters 92 are installed in the output circuit of the battery 91 and are used to convert the DC output from the battery 91 into three-phase AC to drive either the first motor 11 or the second motor 12.

[0059] Using the hybrid system shown in Figure 1 as an example, we will explain each power mode of the hybrid system.

[0060] When the hybrid system is in pure electric mode, as shown in Figure 2, the engine 10 and the first motor 11 are not operating, the clutch 50 is disengaged, and the vehicle is driven and propelled by the second motor 12. The power supply assembly 90 discharges, passes through the inverter 92 to convert DC to three-phase AC, and then drives and rotates the output shaft of the second motor 12. The second motor 12 converts electrical energy into mechanical energy and transmits it to the third main shaft 23, which then passes through the second transmission gear 72 and differential 80 to the wheels, realizing a mode in which the second motor 12 drives and propels the vehicle.

[0061] In pure electric mode, reverse operation conditions can be achieved using a similar principle, and this will not be explained in the embodiments of this disclosure.

[0062] When the hybrid system is in series hybrid drive mode, as shown in Figure 3, the engine 10, the first motor 11, and the second motor 12 work together in coordination to drive the vehicle. In this mode, the clutch 50 is disengaged, the engine 10 operates in a high-efficiency range to drive the first motor 11 to generate electricity, the generated electrical energy is supplied to the second motor 12 to drive the vehicle, excess electrical energy is stored in the power supply assembly 90, and if the amount of generated electricity is insufficient, it is replenished by the power supply assembly 90, so that the first motor 11 and the power supply assembly 90 work together to meet the power requirements of the second motor 12.

[0063] When the hybrid system is in parallel hybrid drive mode, as shown in Figure 4, the engine 10, the first motor 11, and the second motor 12 work together to drive the vehicle, producing a relatively large amount of power and improving the overall dynamism of the vehicle. In this mode, the clutch 50 engages, the power of the engine 10 is transmitted to the planetary gear train 30, and some of the power of the engine 10 is transmitted to the first motor 11 to drive the first motor 11 and generate electricity, while the remaining power of the engine 10 is transmitted to the third shaft 23 by passing sequentially through the second shaft 22, clutch 50, and gear train 60, and then combines with the power of the second motor 12 on the third shaft 23, ultimately enabling the engine 10 and the second motor 12 to jointly drive and rotate the wheels.

[0064] When the hybrid system is in direct drive mode for engine 10, as shown in Figure 5, the clutch 50 engages and the second motor 12 does not operate. Power from engine 10 is transmitted to the planetary gear train 30, and some of the power from engine 10 is transmitted to the first motor 11 to drive the first motor 11 and generate electricity, while the remaining power from engine 10 is transmitted to the third shaft 23, passing sequentially through the second shaft 22, clutch 50 and gear train 60, allowing engine 10 to drive and rotate the wheels on its own.

[0065] When the hybrid system is in energy recovery mode, as shown in Figure 6, the vehicle is in a sliding or braking condition, and the hybrid system provides a reverse torque to the vehicle, recovering braking energy by providing a negative torque via the second motor 12 to a portion of the vehicle's kinetic energy, which is then stored in the power supply assembly 90 for use.

[0066] Embodiments of this disclosure provide an automobile, which includes a vehicle body and a hybrid system, the hybrid system being located within the vehicle body.

[0067] As shown in Figure 1, the hybrid system includes an engine 10, a first motor 11, a planetary gear train 30, a first spindle 21, and a second spindle 22.

[0068] As shown in Figure 1, the first main shaft 21 and the second main shaft 22 are distributed coaxially with a gap between them. The first end of the first main shaft 21 is used to transmit power to the output shaft of the engine 10, and the second main shaft 22 is used to transmit power to the wheels.

[0069] As shown in Figure 1, the planetary gear train 30 includes a sun gear 31, a plurality of planetary gears 32, a planetary carrier 33, a ring gear 34, and a brake 35. The ring gear 34 is coaxially positioned with the sun gear 31, the plurality of planetary gears 32 are located between the sun gear 31 and the ring gear 34 and all mesh with the sun gear 31 and the ring gear 34, the planetary carrier 33 is coaxially connected to the second end of the first spindle 21, the sun gear 31 is movably fitted outside the first spindle 21, the brake 35 is used to brake the sun gear 31, and the ring gear 34 is coaxially connected to the second spindle 22.

[0070] As shown in Figure 1, the planetary gear train 30 is located inside the rotor 110 of the first motor 11, and the inner circumferential wall of the rotor 110 of the first motor 11 is connected to the outer circumferential wall of the ring gear 34.

[0071] The hybrid system provided by the embodiments of this disclosure includes an engine 10, a first motor 11, a planetary gear train 30, a first spindle 21, and a second spindle 22, wherein the planetary carriers 33 of the planetary gear train 30 are transmitted to the first spindle 21, and the ring gear 34 of the planetary gear train 30 is transmitted to the second spindle 22, so that power can be input from the planetary carriers 33 of the planetary gear train 30 and then transmitted by the planetary gear train 30 to the ring gear 34 of the planetary gear train 30 for output. The planetary gear train 30 is mounted inside the rotor 110 of the first motor 11, and the outer circumferential wall of the ring gear 34 of the planetary gear train 30 is connected to the inner circumferential wall of the rotor 110 of the first motor 11. In this way, by transmitting the power of the first motor 11 to the planetary gear train 30 via the ring gear 34, the power of the first motor 11 can be connected to the hybrid system. Furthermore, since the planetary gear train 30 is installed within the rotor 110 of the first motor 11, the axial space required for installing the planetary gear train 30 within the hybrid system is reduced. In this way, the axial dimensions of the hybrid system can be significantly reduced, improving the problem of the hybrid system occupying a relatively large axial space and enabling a lightweight design for the hybrid system.

[0072] Selectively, the axial length of the ring gear 34 is less than or equal to the axial length of the rotor 110 of the first motor 11. The ring gear 34 is a transmission member that surrounds the sun gear 31, planetary gears 32, and planetary carrier 33 in the planetary gear train 30. Therefore, the axial length of the ring gear 34 is greater than the axial lengths of the sun gear 31, planetary gears 32, and planetary carrier 33.

[0073] In the embodiments of this disclosure, in order to ensure that the planetary gear train 30 does not exceed the length of the rotor 110 of the first motor 11 in the axial direction, the axial length of the ring gear 34 is further limited to less than the axial length of the rotor 110 of the first motor 11, so that the planetary gear train 30 is completely enclosed within the rotor 110 of the first motor 11, thereby minimizing the space occupied by the planetary gear train 30 in the hybrid system.

[0074] Selectively, as shown in Figure 1, the hybrid system further includes a housing, the first motor 11, the planetary gear train 30 and the second spindle 22 all located within the housing, the first spindle 21 being movably inserted into the housing, the first end of the first spindle 21 located outside the housing and the second end of the first spindle 21 located within the housing.

[0075] In the above embodiment, the planetary gear train 30 is installed within the rotor 110 of the first motor 11, and the first motor 11 and the planetary gear train 30 constitute the overall structure. In this way, when installing the hybrid system, the first motor 11 and the planetary gear train 30 can be installed together in the housing, eliminating the need to install a separate mounting structure for the first motor 11 within the vehicle body space, which is advantageous in improving the assembly efficiency of the hybrid system.

[0076] Selectively, as shown in Figure 1, the planetary gear train 30 further includes a first hollow shaft 36 which is movably fitted onto the first main shaft 21, and one end of the first hollow shaft 36 is coaxially connected to the sun gear 31.

[0077] As shown in Figure 1, the brake 35 includes a first steel plate 351 and a first clutch plate 352, the outer peripheral wall of the first steel plate 351 of the brake 35 is connected to the inner wall of the housing, the first clutch plate 352 of the brake 35 is fitted axially movably outside the first hollow shaft 36 and the first clutch plate 352 of the brake 35 is locked circumferentially with the first hollow shaft 36.

[0078] For example, the inner wall of the housing is provided with locking slots that extend in the axial direction, and the outer circumferential wall of the first steel plate 351 of the brake 35 is provided with projections that can slide axially within the locking slots so that the first steel plate 351 is locked in the circumferential direction after it has been attached to the housing.

[0079] Exemplary, the outer wall of the first hollow shaft 36 is provided with an axially extending locking slot, and the inner wall of the first clutch plate 352 of the brake 35 is provided with a projection that can slide within the locking slot along the axial direction of the first hollow shaft 36 so that the first clutch plate 352 can be locked circumferentially with the first hollow shaft 36.

[0080] When it is necessary to control and brake the first brake 35, the drive unit controls and bonds the first steel plate 351 and the first clutch plate 352 together so as to fix the first hollow shaft 36 to the housing, thereby braking the sun gear 31 of the planetary gear train 30.

[0081] Selectively, as shown in Figure 1, the hybrid system further includes a clutch 50, a gear train 60, and a third spindle 23, the third spindle 23 being distributed parallel to the second spindle 22.

[0082] As shown in Figure 1, the clutch 50 is connected to the input gear of the gear train 60 and the second spindle 22, the output gear of the gear train 60 is coaxially connected to the third spindle 23, and the third spindle 23 is used to drive the wheels.

[0083] By installing the clutch 50, power transmission between the planetary gear train 30 and the wheels can be interrupted. When the engine 10 is controlled to output power to the first motor 11, and the first motor 11 is driven to generate electricity, the clutch 50 can be controlled and disengaged to fully transmit the power of the engine 10 to the first motor 11 and drive the first motor 11 to generate electricity. This prevents the transmission of power from the engine 10 to the wheels and prevents power loss.

[0084] Selectively, as shown in Figure 1, the hybrid system further includes a second hollow shaft 37, which is movably fitted outside the second main shaft 22.

[0085] As shown in Figure 1, the clutch 50 includes a clutch ring 403, a second steel plate 401, and a second clutch plate 402, both of which are located within the clutch ring 403, which is coaxially connected to the second main shaft 22, the outer circumferential wall of the second steel plate 401 of the clutch 50 is connected to the inner wall of the clutch ring 403, the second clutch plate 402 of the clutch 50 is fitted axially movably outside the second hollow shaft 37, and the second clutch plate 402 of the clutch 50 is circumferentially locked to the second hollow shaft 37.

[0086] As shown in Figure 1, the input gear of the gear train 60 is coaxially connected to one end of the second hollow shaft 37, and the output gear of the gear train 60 is coaxially connected to one end of the third main shaft 23, which is used to transmit power to the wheels.

[0087] For example, the inner wall of the clutch ring 403 is provided with an axially extending locking slot, and the outer circumferential wall of the second steel plate 401 of the clutch 50 is provided with a projection that can slide along the axial direction of the clutch ring 403 within the locking slot so that the second steel plate 401 is locked circumferentially after it has been attached to the clutch ring 403.

[0088] Exemplary, the outer wall of the second hollow shaft 37 is provided with an axially extending locking slot, and the inner wall of the second clutch plate 402 of the clutch 50 is provided with a projection that can slide within the locking slot along the axial direction of the second hollow shaft 37 so that the second clutch plate 402 can be locked circumferentially with the second hollow shaft 37.

[0089] When it is necessary to control and engage the clutch 50, the drive unit controls and bonds the second steel plate 401 and the second clutch plate 402 together, thereby transmitting power between the second hollow shaft 37 and the clutch ring 403. In this way, the power transmitted from the planetary gear train 30 to the clutch 50 is transmitted by the clutch 50 to the second hollow shaft 37, and then transmitted through the second hollow shaft 37 and the gear train 60 to the third main shaft 23. Finally, the power is transmitted by the third main shaft 23 to the wheels, thereby driving and rotating the wheels.

[0090] In the embodiments of this disclosure, each gear train 60 includes at least an input gear and an output gear, and power can be transmitted from the input gear to the output gear by the input gear being connected to the output gear.

[0091] Selectively, in the gear train 60, the input gear and the output gear may mesh directly with each other, or at least one additional connecting gear may be installed between the input gear and the output gear.

[0092] It should be explained that the exact number of gears to be installed within the gear train 60 can be determined according to the actual needs.

[0093] Those skilled in the art will understand that all or part of the steps for carrying out the above embodiments can be performed by hardware or by a program that instructs the relevant hardware, the program may be stored in a computer-readable storage medium, the storage medium referred to above may be read-only memory, a magnetic disk or an optical disk, etc.

[0094] The above description is merely a preferred embodiment of the present application and does not limit it, and any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present application should be included within the scope of the claims. [Explanation of Symbols]

[0095] 10. Engine, 11. First motor, 110. Rotor, 12. Second motor, 21. First main shaft, 22. Second main shaft, 23. Third main shaft, 30, planetary gear train, 31, sun gear, 32, planetary gear, 33, planetary carrier, 34, ring gear, 35, brake, 351, first steel plate, 352, first clutch plate, 36, first hollow shaft, 37, second hollow shaft, 401, steel plate, 402, clutch plate, 403, clutch ring, 50, clutch, 60, gear train, 71, the first transmission gear, 72, the second transmission gear, 80, differential gear, 90. Power supply assembly, 91. Battery, 92. Inverter

Claims

1. A hybrid system comprising an engine (10), a first motor (11), a planetary gear train (30), a first spindle (21), and a second spindle (22), The first main shaft (21) and the second main shaft (22) are distributed coaxially with a gap between them, the first end of the first main shaft (21) is used to transmit power to the output shaft of the engine (10), and the second main shaft (22) is used to transmit power to the wheels. The planetary gear train (30) includes a sun gear (31), a plurality of planetary gears (32), a planetary carrier (33), a ring gear (34), and a brake (35), wherein the ring gear (34) is coaxially positioned with the sun gear (31), the plurality of planetary gears (32) are positioned between the sun gear (31) and the ring gear (34) and mesh with the sun gear (31) and the ring gear (34), the planetary carrier (33) is coaxially connected to the second end of the first spindle (21), the sun gear (31) is movably fitted outside the first spindle (21), the brake (35) is used to brake the sun gear (31), and the ring gear (34) is coaxially connected to the second spindle (22). The planetary gear train (30) is located within the rotor (110) of the first motor (11), and the inner circumferential wall of the rotor (110) of the first motor (11) is connected to the outer circumferential wall of the ring gear (34). Hybrid system.

2. The ring gear (34) is characterized in that its axial length is less than or equal to the axial length of the rotor (110) of the first motor (11). The hybrid system according to claim 1.

3. The hybrid system further includes a housing, wherein the first motor (11), the planetary gear train (30), and the second spindle (22) are all located within the housing, the first spindle (21) is movably inserted into the housing, the first end of the first spindle (21) is located outside the housing, and the second end of the first spindle (21) is located within the housing. The hybrid system according to claim 1.

4. The planetary gear train (30) further includes a first hollow shaft (36), the first hollow shaft (36) is movably fitted outside the first main shaft (21), and one end of the first hollow shaft (36) is coaxially connected to the sun gear (31). The brake (35) includes a first steel plate (351) and a first clutch plate (352), wherein the outer peripheral wall of the first steel plate (351) of the brake (35) is connected to the inner wall of the housing, the first clutch plate (352) of the brake (35) is fitted axially movably outside the first hollow shaft (36), and the first clutch plate (352) of the brake (35) is circumferentially locked to the first hollow shaft (36). The hybrid system according to claim 3.

5. The hybrid system further includes a clutch (50), a gear train (60), and a third spindle (23), wherein the third spindle (23) is distributed parallel to the second spindle (22). The clutch (50) is connected to the input gear of the gear train (60) and the second main shaft (22), the output gear of the gear train (60) is coaxially connected to the third main shaft (23), and the third main shaft (23) is used to transmit power to a wheel. A hybrid system according to any one of claims 1 to 4.

6. The hybrid system further includes a second hollow shaft (37), the second hollow shaft (37) being movably fitted outside the second main shaft (22), The clutch (50) includes a clutch ring (403), a second steel plate (401), and a second clutch plate (402), wherein both the second steel plate (401) and the second clutch plate (402) of the clutch (50) are located within the clutch ring (403), the clutch ring (403) is coaxially connected to the second main shaft (22), the outer circumferential wall of the second steel plate (401) of the clutch (50) is connected to the inner wall of the clutch ring (403), the second clutch plate (402) of the clutch (50) is externally fitted to the second hollow shaft (37) so as to be axially movable, and the second clutch plate (402) of the clutch (50) is circumferentially locked to the second hollow shaft (37). The input gear of the gear train (60) is characterized by being coaxially connected to one end of the second hollow shaft (37), The hybrid system according to claim 5.

7. The hybrid system further includes a second motor (12) and a first transmission gear (71), wherein the output shaft of the second motor (12) is transmitted to the first transmission gear (71), and the first transmission gear (71) meshes with the output gear of the gear train (60). The hybrid system according to claim 5.

8. The hybrid system further includes a second transmission gear (72) and a differential (80), wherein the second transmission gear (72) is fixedly fitted outside the third main shaft (23), the differential (80) is transmitted to the second transmission gear (72), and the third main shaft (23) is transmitted to the wheels by the differential (80). The hybrid system according to claim 5.

9. The hybrid system further includes a power supply assembly (90), the power supply assembly (90) includes a battery (91) and an inverter (92), the inverter (92) being connected to the battery (91) and the first motor (11), respectively. A hybrid system according to any one of claims 1 to 4 and 6 to 8.

10. An automobile, comprising a vehicle body and a hybrid system, wherein the hybrid system is located within the vehicle body, and the hybrid system comprises an engine (10), a first motor (11), a planetary gear train (30), a first main shaft (21), and a second main shaft (22). The first main shaft (21) and the second main shaft (22) are distributed coaxially with a gap between them, the first end of the first main shaft (21) is used to transmit power to the output shaft of the engine (10), and the second main shaft (22) is used to transmit power to the wheels. The planetary gear train (30) includes a sun gear (31), a plurality of planetary gears (32), a planetary carrier (33), a ring gear (34), and a brake (35), wherein the ring gear (34) is coaxially positioned with the sun gear (31), the plurality of planetary gears (32) are positioned between the sun gear (31) and the ring gear (34) and mesh with the sun gear (31) and the ring gear (34), the planetary carrier (33) is coaxially connected to the second end of the first spindle (21), the sun gear (31) is movably fitted outside the first spindle (21), the brake (35) is used to brake the sun gear (31), and the ring gear (34) is coaxially connected to the second spindle (22). The planetary gear train (30) is located within the rotor (110) of the first motor (11), and the inner circumferential wall of the rotor (110) of the first motor (11) is connected to the outer circumferential wall of the ring gear (34). car.

11. The ring gear (34) is characterized in that its axial length is less than or equal to the axial length of the rotor (110) of the first motor (11). The automobile according to claim 10.

12. The hybrid system further includes a housing, wherein the first motor (11), the planetary gear train (30), and the second spindle (22) are all located within the housing, the first spindle (21) is movably inserted into the housing, the first end of the first spindle (21) is located outside the housing, and the second end of the first spindle (21) is located within the housing. The automobile according to claim 10.

13. The planetary gear train (30) further includes a first hollow shaft (36), the first hollow shaft (36) is movably fitted outside the first main shaft (21), and one end of the first hollow shaft (36) is coaxially connected to the sun gear (31). The brake (35) includes a first steel plate (351) and a first clutch plate (352), wherein the outer peripheral wall of the first steel plate (351) of the brake (35) is connected to the inner wall of the housing, the first clutch plate (352) of the brake (35) is fitted axially movably outside the first hollow shaft (36), and the first clutch plate (352) of the brake (35) is circumferentially locked to the first hollow shaft (36). The automobile according to claim 12.

14. The hybrid system further includes a clutch (50), a gear train (60), and a third spindle (23), wherein the third spindle (23) is distributed parallel to the second spindle (22). The clutch (50) is connected to the input gear of the gear train (60) and the second main shaft (22), the output gear of the gear train (60) is coaxially connected to the third main shaft (23), and the third main shaft (23) is used to transmit power to a wheel. The automobile according to any one of claims 10 to 13.

15. The hybrid system further includes a second hollow shaft (37), the second hollow shaft (37) being movably fitted outside the second main shaft (22), The clutch (50) includes a clutch ring (403), a second steel plate (401), and a second clutch plate (402), wherein both the second steel plate (401) and the second clutch plate (402) of the clutch (50) are located within the clutch ring (403), the clutch ring (403) is coaxially connected to the second main shaft (22), the outer circumferential wall of the second steel plate (401) of the clutch (50) is connected to the inner wall of the clutch ring (403), the second clutch plate (402) of the clutch (50) is externally fitted to the second hollow shaft (37) so as to be axially movable, and the second clutch plate (402) of the clutch (50) is circumferentially locked to the second hollow shaft (37). The input gear of the gear train (60) is characterized by being coaxially connected to one end of the second hollow shaft (37), The automobile according to claim 14.

Images