WO2024045403A1

WO2024045403A1 - Gearbox, hybrid power system, and automobile

Info

Publication number: WO2024045403A1
Application number: PCT/CN2022/137113
Authority: WO
Inventors: 张恒先; 束梅珍; 周之光; 李双銮
Original assignee: 奇瑞汽车股份有限公司
Priority date: 2022-08-30
Filing date: 2022-12-07
Publication date: 2024-03-07
Also published as: CN115246313A

Abstract

The present disclosure provides a gearbox, a hybrid power system, and an automobile. The gearbox comprises a housing, a first speed change mechanism, and an input main shaft; the first speed change mechanism is located in the housing; the input main shaft is movably inserted into the housing, and the input main shaft is used for being transmittingly connected to at least one power source; the first speed change mechanism comprises a first central gear, a plurality of first planet gears, a first planet carrier, a first ring gear, a first clutch, and a second clutch; the first ring gear and the first central gear are coaxially arranged; the plurality of first planet gears are located between the first central gear and the first ring gear and are all meshed with the first central gear and the first ring gear; the first central gear is coaxially connected to the input main shaft; the first planet carrier is transmittingly connected to wheels; the first clutch is separately connected to the first ring gear and the first planet carrier; and the second clutch is separately connected to the first ring gear and the housing. The present disclosure can implement multi-gear speed change adjustment of a planetary gear train, and reduce costs.

Description

Transmissions, hybrid systems and cars

This disclosure claims priority from the Chinese patent application with application number 202211045887.7 and the invention title "Transmission, Hybrid System and Automobile" filed on August 30, 2022, the entire content of which is incorporated into this application by reference.

Technical field

The present disclosure relates to the field of automobile technology, and in particular to a gearbox, a hybrid power system and an automobile.

Background technique

A hybrid system is a power system that uses an engine and an electric motor as power sources, so that the engine and the electric motor jointly drive the vehicle.

In related technology, a hybrid system includes a gearbox, an engine and a motor. The gearbox includes a planetary gear train, a first main shaft and a second main shaft. The planetary gear train includes: a sun wheel, a planet wheel, a planet carrier and a ring gear. The ring and the center wheel are arranged coaxially. The planet wheels are located between the center wheel and the ring gear, and are meshed with the center wheel and the ring gear. The ring gear is fixed. The first main shaft is transmission connected with the center wheel, the second main shaft is transmission connected with the planet carrier, the first main shaft is used for transmission connection with the engine and motor, and the second main shaft is used for transmission connection with the wheel.

However, this type of planetary gear train has a single transmission mode, making it difficult to give full play to the performance of the planetary gear train. It also requires multiple spindles, and the manufacturing cost of the gearbox is high.

Contents of the invention

Embodiments of the present disclosure provide a gearbox, a hybrid power system and an automobile, which can realize multi-gear speed adjustment of a planetary gear train and reduce costs. The technical solutions are as follows:

An embodiment of the present disclosure provides a gearbox. The gearbox includes: a housing, a first transmission mechanism and an input spindle; the first transmission mechanism is located in the housing, and the input spindle is movably inserted in the On the housing, the input mainshaft is used for transmission connection with at least one power source; the first transmission mechanism includes: a first sun wheel, a plurality of first planet wheels, a first planet carrier, a first ring gear, a first Clutch and second clutch, the first ring gear and the first sun wheel are coaxially arranged, the plurality of first planet gears are located between the first sun wheel and the first ring gear, and are all The first center wheel is meshed with the first ring gear, the first center wheel is coaxially connected to the input main shaft, the first planet carrier is transmission connected to the wheel; the first clutch is respectively connected to the The first ring gear is connected to the first planet carrier for controlling the connection or separation of the first ring gear and the first planet carrier. The second clutch is respectively connected to the first ring gear and the first planet carrier. The housing is connected and used to control the connection or separation between the first ring gear and the housing.

In another implementation of the embodiment of the present disclosure, the flywheel of the first clutch is coaxially connected to the first planet carrier, and the driven plate of the first clutch is coaxially connected to the first ring gear. ; The flywheel of the second clutch is coaxially connected to the first ring gear, and the driven plate of the second clutch is connected to the housing.

In an implementation manner of the embodiment of the present disclosure, the first transmission mechanism further includes a ring gear, the ring gear is coaxially connected to the first planet carrier, and the ring ring and the first clutch are respectively located at On both sides of the first planetary gear, the ring gear is drivingly connected to the wheel.

In another implementation manner of the embodiment of the present disclosure, the input main shaft includes a first section and a second section, and the first section and the second section are coaxially spaced apart; the gearbox further includes a second section A transmission mechanism and a third clutch. The second transmission mechanism and the third clutch are both located in the housing; the second transmission mechanism has an input part and an output part, and the input part is connected to the second transmission section. connection, the output part is used for transmission connection with the generator mechanism, the first center wheel is coaxially connected to the first section, and the third clutch is connected to the first section and the second section respectively.

In another implementation of the embodiment of the present disclosure, the second transmission mechanism includes: a second sun wheel, a second planet carrier, a plurality of second planet wheels, a second ring gear, a fourth clutch, and a fifth clutch. , the second ring gear is coaxially arranged with the second sun wheel, the plurality of second planet gears are located between the second sun wheel and the second ring gear, and are all aligned with the second The center wheel meshes with the second ring gear, the second center wheel is coaxially connected with the input main shaft, the second planet carrier is used for transmission connection with the power generation mechanism; the fourth clutch is respectively connected with the third The second ring gear is connected to the second planet carrier and is used to control the connection or separation of the second ring gear and the second planet carrier. The fifth clutch is connected to the second ring gear and the housing respectively. connected to control the connection or separation between the second ring gear and the housing.

In another implementation of the embodiment of the present disclosure, the second transmission mechanism includes a gear train, an input gear of the gear train is coaxially connected to the input main shaft, and an output gear of the gear train is used to connect to the power generation Mechanism transmission connection.

Embodiments of the present disclosure provide a hybrid power system. The hybrid power system includes a first power source, a second power source, a power generation mechanism and a gearbox as described above. The first power source is an engine, and the The second power source is a first motor, and the power generation mechanism is a second motor; the engine, the first motor and the second motor are all located outside the housing, and the output shaft of the engine and the third motor are The output shaft of one motor is drivingly connected to the input main shaft, and the engine and the first motor are located on both sides of the third clutch. The output shaft of the second motor is in the same position as the first planet carrier. The axes are connected.

In another implementation manner of the embodiment of the present disclosure, the hybrid power system further includes a power supply component located outside the housing. The power supply component includes a battery and two inverters. One of the two inverters is connected between the battery and the first motor, and the other of the two inverters is connected between the battery and the second motor.

In another implementation manner of the embodiment of the present disclosure, the hybrid system further includes a differential, the differential is drivingly connected to the first planet carrier, and the differential is used to be drivingly connected to the wheels.

Embodiments of the present disclosure provide an automobile, which includes a hybrid system as described above and an automobile body, and the hybrid system is located in the automobile body.

The beneficial effects brought by the technical solutions provided by the embodiments of the present disclosure include at least:

In the gearbox of the embodiment of the present disclosure, the power of the power source can be transmitted to the first center wheel of the first transmission mechanism through the input main shaft, wherein the first transmission mechanism is provided with a first clutch and a second clutch, and the first clutch can The second clutch can connect or separate the first ring gear and the first planet carrier, and the second clutch can connect or separate the first ring gear and the housing. When the first clutch connects the first ring gear and the first planet carrier, the first ring gear and the first planet carrier are combined into a whole. At this time, the first center wheel is driven, the first planet carrier is driven, and the first center wheel and the first planet carrier are driven. The planet carrier rotates at the first speed ratio; when the second clutch connects the first ring gear and the housing, the first ring gear is fixed. At this time, the first center wheel is active, the first planet carrier is driven, and the first center wheel and The first planet carrier rotates at the second speed ratio. In this way, by controlling the combination of the first clutch or the second clutch, the first planet carrier can be controlled to output different rotational speeds to drive the wheels to rotate, thereby achieving multi-gear speed adjustment. Moreover, since the gearbox is provided with only one input shaft, various parts in the gearbox are effectively reduced and the manufacturing cost of the gearbox is reduced.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a gearbox provided by an embodiment of the present disclosure;

Figure 2 is a schematic structural diagram of another gearbox provided by an embodiment of the present disclosure;

Figure 3 is a schematic structural diagram of a hybrid power system provided by an embodiment of the present disclosure;

Figure 4 is a schematic diagram of energy transfer in a pure electric mode of a hybrid power system provided by an embodiment of the present disclosure;

Figure 5 is a schematic diagram of energy transfer in a pure electric mode of a hybrid power system provided by an embodiment of the present disclosure;

Figure 6 is a schematic diagram of energy transfer of a hybrid power system in hybrid power mode provided by an embodiment of the present disclosure;

Figure 7 is a schematic diagram of energy transfer in a hybrid power system provided by an embodiment of the present disclosure;

Figure 8 is a schematic diagram of energy transfer of a hybrid power system in hybrid power mode provided by an embodiment of the present disclosure;

Figure 9 is a schematic diagram of energy transfer of a hybrid power system in hybrid power mode provided by an embodiment of the present disclosure;

Figure 10 is a schematic diagram of energy transfer of a hybrid system in engine direct drive mode provided by an embodiment of the present disclosure;

Figure 11 is a schematic diagram of energy transfer of a hybrid system in engine direct drive mode provided by an embodiment of the present disclosure;

Figure 12 is a schematic diagram of energy transfer in an energy recovery mode of a hybrid power system provided by an embodiment of the present disclosure.

Each mark in the figure is explained as follows:

100. Shell;

10. Engine; 11. First motor; 12. Second motor; 13. Wheels; 14. Differential;

20. Input spindle; 21. First section; 22. Second section;

31. The first sun wheel; 32. The first planet gear; 33. The first planet carrier; 34. The first ring gear; 35. The first clutch; 36. The second clutch; 37. The ring gear; 301. Flywheel; 302 ,Driven disc;

41. The second sun wheel; 42. The second planet carrier; 43. The second planet gear; 44. The second ring gear; 45. The fourth clutch; 46. The fifth clutch;

51. Third clutch;

60. Power supply components; 61. Battery; 62. Inverter;

70. Gear train; 71. Input gear of gear train; 72. Output gear of gear train.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in further detail below in conjunction with the accompanying drawings.

Unless otherwise defined, technical or scientific terms used herein shall have their ordinary meaning understood by a person of ordinary skill in the art to which this disclosure belongs. "First", "second", "third" and similar words used in the specification and claims of this patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. . Likewise, "a" or "one" and similar words do not indicate a quantitative limit, but rather indicate the presence of at least one. "Including" or "includes" and other similar words mean that the elements or things appearing before "includes" or "includes" cover the elements or things listed after "includes" or "includes" and their equivalents, and do not exclude others. Component or object. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Top", "bottom", "left", "right", "top", "bottom", etc. are only used to express relative position relationships. When the absolute position of the described object changes, the relative position relationship may also be Change accordingly.

Figure 1 is a schematic structural diagram of a gearbox provided by an embodiment of the present disclosure. As shown in FIG. 1 , the gearbox includes: a housing 100 , a first transmission mechanism and an input spindle 20 .

As shown in FIG. 1 , the first transmission mechanism is located in the housing 100 , and the input spindle 20 is movably inserted into the housing 100 . The input spindle 20 is used for transmission connection with at least one power source.

As shown in Figure 1, the first transmission mechanism includes: a first sun wheel 31, a plurality of first planetary gears 32, a first planet carrier 33, a first ring gear 34, a first clutch 35 and a second clutch 36. The first The ring gear 34 is coaxially arranged with the first sun wheel 31 , and the plurality of first planet gears 32 are located between the first center wheel 31 and the first ring gear 34 , and are all meshed with the first center wheel 31 and the first ring gear 34 , the first center wheel 31 is coaxially connected to the input main shaft 20 , and the first planet carrier 33 is drivingly connected to the wheel 13 .

Among them, the first clutch 35 is connected to the first ring gear 34 and the first planet carrier 33 respectively, and is used to control the connection or separation of the first ring gear 34 and the first planet carrier 33. The second clutch 36 is connected to the first ring gear 34 respectively. It is connected to the housing 100 and used to control the connection or separation of the first ring gear 34 and the housing 100 .

In the gearbox of the embodiment of the present disclosure, the power of the power source can be transmitted to the first center wheel 31 of the first transmission mechanism through the input main shaft 20, wherein the first transmission mechanism is provided with a first clutch 35 and a second clutch 36, The first clutch 35 can connect or separate the first ring gear 34 and the first planet carrier 33 , and the second clutch 36 can connect or separate the first ring gear 34 and the housing 100 . When the first clutch 35 connects the first ring gear 34 and the first planet carrier 33, the first ring gear 34 and the first planet carrier 33 are combined into a whole. At this time, the first center wheel 31 is driven and the first planet carrier 33 is driven. The first sun gear 31 and the first planet carrier 33 rotate at the first speed ratio; when the second clutch 36 connects the first ring gear 34 and the housing 100, the first ring gear 34 is fixed, and at this time the first sun gear 31 The first planet carrier 33 is driven, and the first center wheel 31 and the first planet carrier 33 rotate at the second speed ratio. In this way, by controlling the engagement of the first clutch 35 or the second clutch 36, the first planet carrier 33 can be controlled to output different rotational speeds to drive the wheels 13 to rotate, thereby realizing multi-speed transmission adjustment. Moreover, since the gearbox is provided with only one input shaft, various parts in the gearbox are effectively reduced and the manufacturing cost of the gearbox is reduced.

Optionally, as shown in FIG. 1 , both the first clutch 35 and the second clutch 36 include: a flywheel 301 and a driven plate 302 , and the flywheel 301 and the driven plate 302 are configured to be controllably connected or separated.

In the embodiment of the present disclosure, the flywheel 301 of the clutch can move along the axial direction of the driven plate 302 in the driven plate 302 to fit or separate from the driven plate 302, thereby realizing the combination or separation of the flywheel 301 and the driven plate 302. Disengage and complete the clutch action.

As shown in FIG. 1 , the flywheel 301 of the first clutch 35 is coaxially connected to the first planet carrier 33 , and the driven plate 302 of the first clutch 35 is coaxially connected to the first ring gear 34 . The first ring gear 34 and the first planet carrier 33 are connected through the first clutch 35. When the first clutch 35 is controlled to be combined, the first ring gear 34 and the first planet carrier 33 can be combined into a whole, so that the first gear 34 and the first planet carrier 33 can be combined into a whole. The ring 34 and the first planet carrier 33 rotate together. When the first clutch 35 is controlled to be disengaged, the first planet carrier 33 ring can be allowed to rotate freely relative to the first ring gear 34 .

As shown in FIG. 1 , the flywheel 301 of the second clutch 36 is coaxially connected to the first ring gear 34 , and the driven plate 302 of the second clutch 36 is connected to the housing 100 . The first ring gear 34 and the housing 100 are connected through the second clutch 36. When the second clutch 36 is controlled to be combined, the first ring gear 34 can be fixed on the housing 100, thereby braking the first ring gear 34. When the second clutch 36 is controlled to be disengaged, the first ring gear 34 can be freely rotated relative to the housing 100 .

When the first clutch 35 is disengaged and the second clutch 36 is engaged, the first ring gear 34 is fixed, and the power from the power source is transmitted to the first planet carrier 33 to drive the wheel 13 to rotate. In this mode, the rotation speed of the first planet carrier 33 is lower than the rotation speed of the first center wheel 31, which is the low speed mode, and is suitable for conditions such as automobile cruise control that do not require high power.

When the first clutch 35 is engaged and the second clutch 36 is disengaged, the first ring gear 34 and the first planet carrier 33 are fixed as one body, and the power from the power source is transmitted to the first planet carrier 33 to drive the wheels 13 to rotate. In this mode, the rotation speed of the first center wheel 31 is consistent with the rotation speed of the first planet carrier 33, which is a medium-high speed mode, which is suitable for high-speed driving and other working conditions with high power requirements.

In some other implementations, both the first clutch 35 and the second clutch 36 can be disengaged, so that the power of the first power source is not transmitted to the first planet carrier 33 , that is, in the neutral mode.

Optionally, as shown in FIG. 1 , the first transmission mechanism also includes a ring gear 37 , which is coaxially connected to the first planetary carrier 33 . The ring gear 37 and the first clutch 35 are respectively located on both sides of the first planetary gear 32 . On the other side, the ring gear 37 is drivingly connected to the wheel 13.

Among them, the ring gear 37 is an annular structure, and the outer wall surface of the ring gear 37 has a gear. The ring gear 37 can be coaxially sleeved outside the first planet carrier 33 , or coaxially connected to the first planet carrier 33 through other connection structures, so that the rotation of the first planet carrier 33 can drive the ring gear 37 to rotate together.

In this way, the ring gear 37 is provided on the first planet carrier 33 so that the wheels 13 mesh with the first planet carrier 33 through the gear, so that the first planet carrier 33 can transmit the power in the first transmission mechanism to the wheels 13 to drive the wheels. 13 turns. Moreover, there is no main shaft between the wheel 13 and the first transmission mechanism, which effectively reduces various transmission parts in the gearbox and reduces the manufacturing cost of the gearbox.

As shown in Figure 1, the ring gear 37 and the first clutch 35 are respectively located on both sides of the first planetary gear 32 to prevent the first clutch 35 and the ring gear 37 from being disposed on the same side and affecting the transmission connection between the gear and the wheel 13. , so as to reasonably distribute the components and improve the reliability of the gearbox.

Optionally, as shown in FIG. 1 , the input main shaft 20 includes a first section 21 and a second section 22 , and the first section 21 and the second section 22 are coaxially spaced apart; the gearbox also includes a second transmission mechanism and a third clutch. 51. The second transmission mechanism and the third clutch 51 are both located in the housing 100.

Among them, the second transmission mechanism has an input part and an output part. The input part is drivingly connected with the second section 22, and the output part is used for drivingly connecting with the power generation mechanism. The first center wheel 31 is coaxially connected with the first section 21, and the third clutch 51 is connected to the first segment 21 and the second segment 22 respectively.

In the above implementation, a second transmission mechanism is provided to connect the input main shaft 20 and the power generation mechanism to meet the power generation function of the hybrid power system. Among them, a third clutch 51 is provided between the first center wheel 31 and the second center road. The third clutch 51 is used to interrupt the power transmission between the first transmission mechanism and the second transmission mechanism, so that the transmission mechanism can be selectively When the hybrid power is in the power generation mode or the driving mode, it can also prevent part of the power from being transmitted to the second transmission mechanism when driving the vehicle, so that the power of the power source can be fully used to drive the vehicle.

In one implementation, as shown in FIG. 1 , the second transmission mechanism includes: a second sun wheel 41 , a second planet carrier 42 , a plurality of second planet wheels 43 , a second ring gear 44 , a fourth clutch 45 and The fifth clutch 46 , the second ring gear 44 and the second sun wheel 41 are arranged coaxially. The plurality of second planet gears 43 are located between the second sun wheel 41 and the second ring gear 44 , and are all connected to the second sun wheel 41 It meshes with the second ring gear 44, the second center wheel 41 is coaxially connected with the input main shaft 20, and the second planet carrier 42 is used for transmission connection with the power generation mechanism.

Among them, the fourth clutch 45 is connected to the second ring gear 44 and the second planet carrier 42 respectively, and is used to control the connection or separation of the second ring gear 44 and the second planet carrier 42. The fifth clutch 46 is connected to the second ring gear 44 respectively. It is connected to the housing 100 and used to control the connection or separation of the second ring gear 44 and the housing 100 .

In the above implementation manner, the power of the power source can be transmitted to the second center wheel 41 of the second transmission mechanism through the input main shaft 20 . The second transmission mechanism is provided with a fourth clutch 45 and a fifth clutch 46 . The fourth clutch 45 The fifth clutch 46 can connect or separate the second ring gear 44 and the second planet carrier 42 , and the fifth clutch 46 can connect or separate the second ring gear 44 and the housing 100 . When the fourth clutch 45 connects the second ring gear 44 and the second planet carrier 42, the second ring gear 44 and the second planet carrier 42 are combined into a whole, and the second planet carrier 42 and the second sun wheel 41 are in the first speed ratio. downward rotation; when the fifth clutch 46 connects the second ring gear 44 and the housing 100, the second ring gear 44 is fixed, and the second planet carrier 42 and the second sun wheel 41 rotate at the second speed ratio. In this way, by controlling the combination of the fourth clutch 45 or the fifth clutch 46, the power source can control the power generation mechanism to rotate at different speeds at the same speed, thereby achieving the purpose of generating electricity with different powers, giving full play to the performance of the power generation mechanism, and improving Electricity generation efficiency of hybrid systems.

In the embodiment of the present disclosure, the manner in which the fourth clutch 45 connects the planet carrier and the ring gear, and the manner in which the fifth clutch 46 connects the ring gear and the housing 100 can be described above.

In another implementation, FIG. 2 is a schematic structural diagram of another gearbox provided by an embodiment of the present disclosure. As shown in FIG. 2 , the second transmission mechanism includes a gear train 70 , the input gear 71 of the gear train 70 is coaxially connected to the input main shaft 20 , and the output gear 72 of the gear train 70 is used for transmission connection with the generator mechanism.

By arranging the gear train, the gear train is drive-connected to the generator mechanism and the input main shaft 20 respectively, so as to achieve the purpose of the power source driving the generator mechanism to generate electricity. Since the structure of the gear train is simpler than that of the planetary gear train, it is easy to process and manufacture, and can effectively reduce the cost of the gearbox.

Figure 3 is a schematic structural diagram of a hybrid power system provided by an embodiment of the present disclosure. As shown in Figure 3, the hybrid system includes a first power source, a second power source, a power generation mechanism and the aforementioned gearbox.

Among them, the first power source is the engine 10 , the second power source is the first motor 11 , and the power generation mechanism is the second motor 12 .

As shown in Figure 3, the engine 10, the first motor 11 and the second motor 12 are all located outside the housing 100. The output shafts of the engine 10 and the first motor 11 are both drivingly connected to the input main shaft 20, and the engine 10 and The first motor 11 is located on both sides of the third clutch 51 , and the output shaft of the second motor 12 is coaxially connected to the first planet carrier 33 .

In the embodiment of the present disclosure, the engine 10 and the first motor 11 are used as power sources, and the second motor 12 is configured as a power generation mechanism to form a hybrid power system. This hybrid power system can combine the two power sources through a gearbox. The power is transmitted to the first transmission mechanism to drive the wheels 13, and when the first power source is working, it can also control the generator to generate electricity, allowing the first power source to work efficiently and improve the power performance and endurance of the hybrid system.

As shown in Figure 3, the engine 10 and the first motor 11 are located on both sides of the third clutch 51. In this way, controlling the third clutch 51 can isolate the power transmission between the engine 10 and the first motor 11, and the engine 10 can drive the second motor alone. When the motor 12 generates electricity, it can prevent the engine 10 from dragging the first motor 11 to rotate and thereby lose power.

Optionally, as shown in FIG. 3 , the hybrid system also includes a power supply component 60 located outside the housing 100 . The power supply component 60 includes a battery 61 and two inverters 62 . One of the two inverters 62 is connected between the battery 61 and the first motor 11 , and the other of the two inverters 62 is connected between the battery 61 and the second motor 12 .

By providing two inverters 62 , one is used to connect the battery 61 and the first motor 11 , and the other is used to connect the battery 61 and the second motor 12 . The battery 61 is a rechargeable battery 61 , and the inverter 62 is provided on the output circuit of the battery 61 for converting the direct current output by the battery 61 into three-phase alternating current to drive the first motor 11 or the second motor 12 . In addition, in the embodiment of the present disclosure, the inverter 62 and the transformer are integrated together, which facilitates installation and saves installation space.

Optionally, as shown in FIG. 3 , the hybrid system also includes a differential 14 , the differential 14 is drivingly connected to the first planet carrier 33 , and the differential 14 is used to be drivingly connected to the wheels 13 .

In the embodiment of the present disclosure, the input gear of the differential 14 is meshed with the ring gear 37 on the first planet carrier 33 , so as to receive the power transmitted from the power source to achieve the purpose of driving the wheels 13 to rotate.

The differential 14 enables the wheels 13 connected to the output shaft of the differential 14 to rotate at different speeds. When the car is turning, the turning radius of the inner wheel 13 of the car and the outer wheel 13 of the car are different. The turning radius of the outer wheel 13 is larger than the turning radius of the inner wheel 13. This requires that the rotation speed of the outer wheel 13 is higher when turning. Depending on the rotational speed of the inner wheel 13, the differential 14 can be used to make the two wheels 13 roll at different rotational speeds, thereby realizing a difference in the rotational speeds of the two wheels 13.

Embodiments of the present disclosure provide an automobile, which includes a hybrid power system and an automobile body as described above, and the hybrid power system is located in the automobile body.

The hybrid power system provided by the embodiment of the present disclosure can operate in any one of the power modes, which include pure electric mode, hybrid drive mode, engine 10 direct drive mode and energy recovery mode.

The following takes the hybrid power system shown in Figure 3 as an example to explain each power mode of the hybrid power system:

In the embodiment of the present disclosure, the pure electric mode includes two modes.

In the first mode, FIG. 4 is a schematic diagram of energy transfer in a pure electric mode of a hybrid power system provided by an embodiment of the present disclosure. As shown in Figure 4, when the hybrid system switches to the pure electric mode, the engine 10 and the second motor 12 do not operate, the third clutch 51 is disengaged, the first clutch 35 is disengaged, the second clutch 36 is engaged, and the first motor 11 operates.

In the second mode, FIG. 5 is a schematic diagram of energy transfer in a pure electric mode of a hybrid power system provided by an embodiment of the present disclosure. As shown in Figure 5, when the hybrid system is switched to pure electric mode, the engine 10 and the second motor 12 do not operate, the third clutch 51 is disengaged, the first clutch 35 is engaged, the second clutch 36 is disengaged, and the first motor 11 operates.

In the above two implementations, the battery 61 of the power supply assembly 60 is discharged, and the direct current is converted into three-phase alternating current through the inverter 62 to drive the output shaft of the first motor 11 to rotate, and the power of the first motor 11 passes through the first transmission mechanism. It is passed to the first planetary carrier 33 to drive the wheels 13 to realize pure electric mode.

Optionally, in the pure electric mode, the first motor 11 can also be used to drive the vehicle to travel in reverse gear. When reversing, the engine 10 and the second motor 12 do not work, the third clutch 51 is disengaged, one of the first clutch 35 and the second clutch 36 is coupled and the other is disengaged, and the first motor 11 is reversed to realize reversing.

In the embodiment of the present disclosure, the hybrid mode includes four modes.

FIG. 6 is a schematic diagram of energy transfer in a hybrid power system of a hybrid power system provided by an embodiment of the present disclosure. As shown in Figure 6, in the first mode, the engine 10 works and drives the second motor 12 to generate electricity, the first motor 11 works, and the car is driven by the first motor 11 alone. At this time, the first clutch 35 is disconnected, the second clutch 36 is connected, the third clutch 51 is disconnected, the fourth clutch 45 is disconnected, and the fifth clutch 46 is connected.

Figure 7 is a schematic diagram of energy transfer in a hybrid power system provided by an embodiment of the present disclosure. As shown in Figure 7, in the second mode, the engine 10 works and drives the second motor 12 to generate electricity, the first motor 11 works, and the car is driven by the first motor 11 alone. At this time, the first clutch 35 is disengaged, the second clutch 36 is engaged, the third clutch 51 is disengaged, the fourth clutch 45 is engaged, and the fifth clutch 46 is disengaged.

In the above two modes, the power of the engine 10 is transmitted to the second motor 12 through the input main shaft 20 and the first transmission mechanism in order to drive the second motor 12 to generate electricity; the power of the first motor 11 is transmitted through the input main shaft 20 and the first transmission mechanism in turn. mechanism to drive the wheels 13 to rotate.

FIG. 8 is a schematic diagram of energy transfer in a hybrid power system of a hybrid power system provided by an embodiment of the present disclosure. As shown in FIG. 8 , in the third mode, the engine 10 works and drives the second motor 12 to generate electricity and drive the vehicle. The first motor 11 works, and the vehicle is driven by the engine 10 and the first motor 11 together. At this time, the first clutch 35 is disengaged, the second clutch 36 is engaged, the third clutch 51 is engaged, the fourth clutch 45 is engaged, and the fifth clutch 46 is disengaged.

Figure 9 is a schematic diagram of energy transfer in a hybrid power system of a hybrid power system provided by an embodiment of the present disclosure. As shown in FIG. 9 , in the fourth mode, the engine 10 works and drives the second motor 12 to generate electricity and drive the vehicle. The first motor 11 works, and the vehicle is driven by the engine 10 and the first motor 11 together. At this time, the first clutch 35 is engaged, the second clutch 36 is disengaged, the third clutch 51 is engaged, the fourth clutch 45 is engaged, and the fifth clutch 46 is disengaged.

In the above two modes, part of the power of the engine 10 is sequentially transmitted to the second motor 12 through the input main shaft 20 and the second transmission mechanism to drive the second motor 12 to generate electricity; the other part of the power of the engine 10 is sequentially transmitted through the input main shaft 20 and the second transmission mechanism. The three clutches 51 and the first transmission mechanism are transmitted to the wheels 13 to drive the wheels 13 to rotate. The power of the first motor 11 passes through the input main shaft 20 and the first transmission mechanism in sequence to drive the wheel 13 to rotate.

In the embodiment of the present disclosure, the direct drive mode of the engine 10 includes two modes.

FIG. 10 is a schematic diagram of energy transfer of a hybrid power system in the direct drive mode of the engine 10 provided by an embodiment of the present disclosure. As shown in FIG. 10 , in the first mode, the engine 10 works and drives the second motor 12 to generate electricity and drive the vehicle. The first motor 11 does not work, and the vehicle is driven by the engine 10 alone. At this time, the first clutch 35 is disengaged, the second clutch 36 is engaged, the third clutch 51 is engaged, the fourth clutch 45 is engaged, and the fifth clutch 46 is disengaged.

FIG. 11 is a schematic diagram of energy transfer in the direct drive mode of the engine 10 of a hybrid power system provided by an embodiment of the present disclosure. As shown in FIG. 11 , in the second mode, the engine 10 works and drives the second motor 12 to generate electricity and drive the vehicle. The first motor 11 does not work, and the vehicle is driven by the engine 10 alone. At this time, the first clutch 35 is engaged, the second clutch 36 is disengaged, the third clutch 51 is engaged, the fourth clutch 45 is engaged, and the fifth clutch 46 is disengaged.

In the above two modes, part of the power of the engine 10 is sequentially transmitted to the second motor 12 through the input main shaft 20 and the second transmission mechanism to drive the second motor 12 to generate electricity; the other part of the power of the engine 10 is sequentially transmitted through the input main shaft 20 and the second transmission mechanism. The three clutches 51 and the first transmission mechanism are transmitted to the wheels 13 to drive the wheels 13 to rotate.

In the embodiment of the present disclosure, the direct drive mode of the engine 10 includes two modes. When the hybrid system switches to the energy recovery mode, the engine 10 and the second electric motor 12 do not operate, the third clutch 51 is disengaged, one of the first clutch 35 and the second clutch 36 is engaged and the other is disengaged, and the first electric motor 11 is in Power generation mode.

Exemplarily, FIG. 12 is a schematic diagram of energy transfer in an energy recovery mode of a hybrid power system provided by an embodiment of the present disclosure. As shown in Figure 12, when the hybrid system switches to the energy recovery mode, the engine 10 and the second motor 12 do not operate, the third clutch 51 is disengaged, the fourth clutch 45 is engaged, and the first motor 11 is in the power generation mode.

In the above implementation, when the vehicle is in a sliding or braking condition, the wheels 13 provide reverse torque and transfer part of the vehicle's kinetic energy to the first motor 11 through the second main shaft and the third transmission mechanism to convert it into electrical energy and store it in the power supply. The component 60 is used as a spare to realize the energy recovery function of the first motor 11 .

The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection of the present disclosure. within the range.

Claims

A gearbox, characterized in that the gearbox includes: a housing (100), a first transmission mechanism and an input spindle (20);

The first transmission mechanism is located in the housing (100), and the input spindle (20) is movably inserted into the housing (100). The input spindle (20) is used to communicate with at least one power source. transmission connection;

The first transmission mechanism includes: a first sun wheel (31), a plurality of first planet wheels (32), a first planet carrier (33), a first ring gear (34), a first clutch (35), and a first planet gear (32). Two clutches (36), the first ring gear (34) and the first sun wheel (31) are coaxially arranged, and the plurality of first planet wheels (32) are located on the first sun wheel (31) and the first ring gear (34), and both mesh with the first center wheel (31) and the first ring gear (34). The first center wheel (31) and the input The main shaft (20) is coaxially connected, and the first planet carrier (33) is drivingly connected to the wheel (13);

The first clutch (35) is connected to the first ring gear (34) and the first planet carrier (33) respectively, and is used to control the first ring gear (34) and the first planet carrier. (33) Connect or separate, the second clutch (36) is connected to the first ring gear (34) and the housing (100) respectively, and is used to control the first ring gear (34) and the The housing (100) is connected or separated.
The gearbox according to claim 1, characterized in that the flywheel (301) of the first clutch (35) is coaxially connected to the first planet carrier (33), and the flywheel (301) of the first clutch (35) is coaxially connected to the first planet carrier (33). The driven plate (302) is coaxially connected to the first ring gear (34);

The flywheel (301) of the second clutch (36) is coaxially connected to the first ring gear (34), and the driven plate (302) of the second clutch (36) is connected to the housing (100) connected.
The gearbox according to claim 1, characterized in that the first speed change mechanism further includes a ring gear (37), the ring gear (37) is coaxially connected to the first planet carrier (33), so The ring gear (37) and the first clutch (35) are respectively located on both sides of the first planet wheel (32), and the ring gear (37) is drivingly connected to the wheel (13).
The gearbox according to any one of claims 1 to 3, characterized in that the input main shaft (20) includes a first section (21) and a second section (22), the first section (21) and the second section (22). The second section (22) is coaxially spaced and distributed;

The gearbox also includes a second transmission mechanism and a third clutch (51), both of which are located in the housing (100);

The second speed change mechanism has an input part and an output part. The input part is drivingly connected to the second section (22). The output part is used to be drivingly connected to the power generation mechanism. The first center wheel (31) Coaxially connected with the first section (21), the third clutch (51) is connected with the first section (21) and the second section (22) respectively.
The gearbox according to claim 4, characterized in that the second speed change mechanism includes: a second center wheel (41), a second planet carrier (42), a plurality of second planet wheels (43), a second Ring gear (44), fourth clutch (45) and fifth clutch (46), the second ring gear (44) is coaxially arranged with the second sun wheel (41), the plurality of second planets The wheel (43) is located between the second center wheel (41) and the second ring gear (44), and both mesh with the second center wheel (41) and the second ring gear (44). , the second center wheel (41) is coaxially connected to the input main shaft (20), and the second planet carrier (42) is used for transmission connection with the power generation mechanism;

The fourth clutch (45) is connected to the second ring gear (44) and the second planet carrier (42) respectively, and is used to control the second ring gear (44) and the second planet carrier (42). (42) Connect or disconnect, the fifth clutch (46) is connected to the second ring gear (44) and the housing (100) respectively, and is used to control the second ring gear (44) and the The housing (100) is connected or separated.
The gearbox according to claim 4, characterized in that the second transmission mechanism includes a gear train (70), the input gear of the gear train (70) is coaxially connected to the input main shaft (20), so The output gear of the gear train (70) is used for transmission connection with the power generation mechanism.
A hybrid power system, characterized in that the hybrid power system includes a first power source, a second power source, a power generation mechanism and a gearbox according to any one of claims 4 to 6, the first power source It is an engine (10), the second power source is a first motor (11), and the power generating mechanism is a second motor (12);

The engine (10), the first motor (11) and the second motor (12) are all located outside the housing (100), and the output shaft of the engine (10) and the first motor The output shafts of (11) are all transmission connected with the input main shaft (20), and the engine (10) and the first motor (11) are located on both sides of the third clutch (51). The output shafts of the two motors (12) are coaxially connected to the first planet carrier (33).
The hybrid power system according to claim 7, characterized in that the hybrid power system further includes a power supply component (60), the power supply component (60) is located outside the housing (100), and the power supply component (60) 60) includes: a battery (61) and two inverters (62), one of the two inverters (62) is connected between the battery (61) and the first motor (11) , the other of the two inverters (62) is connected between the battery (61) and the second motor (12).
The hybrid power system according to claim 7, characterized in that the hybrid power system further includes a differential (14), the differential (14) is drivingly connected to the first planet carrier (33), The differential (14) is used for transmission connection with the wheels (13).
An automobile, characterized in that the automobile includes the hybrid system according to any one of claims 7 to 9 and an automobile body, and the hybrid system is located in the automobile body.