Hybrid drive system and vehicle

Abstract

The utility model belongs to the drive technical field of car, concretely relates to a kind of hybrid power drive system and car, the coupling state of three clutch parts of the clutch is passed through by control in the hybrid power drive system, so that engine and / or first motor can output power through multiple power transmission path.When the first clutch part is in coupling state, engine can transmit power to shell and rotor;When the second clutch part is in coupling state, engine and / or motor can output power through first transmission assembly;When the third clutch part is in coupling state, engine and / or motor can output power through first transmission assembly.First motor not only can be used as generator to generate electricity, but also can be used as motor to provide power, using engine and / or first motor as power source to meet the driving of engine and / or first motor and the vehicle demand of first motor power generation.

Description

Technical Field

[0001] This utility model relates to the field of automotive drive technology, and in particular to a hybrid drive system and an automobile. Background Technology

[0002] Hybrid systems enable the engine to always operate within its optimal speed range, maximizing engine efficiency. As a result, cars with hybrid systems often have lower fuel consumption.

[0003] In the front-wheel drive section of existing hybrid drive systems, a dual-clutch connection is typically used between the engine and a single electric motor, enabling the vehicle to achieve engine direct drive mode, parking power generation mode, and hybrid drive mode.

[0004] However, the existing front-wheel drive system cannot be driven by the electric motor alone, resulting in a limited number of drive modes for the vehicle and failing to meet a wide range of user needs. Utility Model Content

[0005] To address the issue of limited driving modes in existing drive systems, this invention provides a hybrid drive system and a vehicle.

[0006] According to an embodiment of the present invention, a first aspect provides a hybrid power drive system, comprising:

[0007] An engine, which includes an output shaft;

[0008] A first electric motor, comprising a stator and a rotor, is capable of being used as a generator and an electric motor;

[0009] The first transmission assembly includes a first transmission shaft and a first transmission gear;

[0010] The second transmission assembly includes a second transmission shaft and a second transmission gear, wherein the second transmission shaft is rotatably mounted on the first transmission shaft.

[0011] The clutch includes a housing, a first clutch portion, a second clutch portion, and a third clutch portion;

[0012] The housing is fixedly connected to the rotor of the motor, the first clutch part is connected to the output shaft and the first clutch part, the second clutch part is connected to the housing and the first drive shaft, and the third clutch part is connected to the housing and the second drive shaft.

[0013] In some embodiments, the system further includes a third transmission assembly and a differential. The third transmission assembly includes a third drive shaft, a third transmission gear, a fourth transmission gear, and a fifth transmission gear. The third transmission gear meshes with the first transmission gear, and the fourth transmission gear meshes with the second transmission gear. A sixth transmission gear is provided on the differential and meshes with the fifth transmission gear.

[0014] In some embodiments, a second motor is also included, which serves as an electric motor for connection to the differential.

[0015] In some embodiments, the second motor is connected to the differential via a fourth transmission assembly, and a seventh transmission gear is provided on the second motor. The fourth transmission assembly includes a fourth transmission shaft, an eighth transmission gear, and a ninth transmission gear. The seventh transmission gear meshes with the eighth transmission gear, and the ninth transmission gear meshes with the sixth transmission gear.

[0016] In some embodiments, the system further includes a control module that controls the starting and stopping of the engine and the first motor, and controls the engagement / disengagement state of the clutch.

[0017] When the engine and the first motor are turned on, the second motor is turned off, the first clutch is in a coupled state, the second clutch and the third clutch are in a disengaged state, the first motor is used as a generator, and the hybrid drive system is in a parking power generation mode;

[0018] When the engine is started, the first motor is turned off, the first clutch and the second clutch are in a coupled state, and the third clutch is in a disengaged state; the hybrid drive system is in the engine's first direct drive mode;

[0019] When the engine is started, the first motor is turned off, the first clutch and the third clutch are in a coupled state, and the second clutch is in a disengaged state; the hybrid drive system is in the engine's second direct drive mode.

[0020] In some embodiments, the system further includes a control module that controls the engine, the starting and stopping of the first motor and the second motor, and the engagement / disengagement state of the clutch.

[0021] When the second motor is turned on, the engine and the first motor are turned off, and the first clutch, the second clutch and the third clutch are in a disengaged state; the hybrid drive system is in pure electric drive mode.

[0022] When the engine, the first motor, and the second motor are turned on, the first clutch is in a coupled state, and the second clutch and the third clutch are in a disengaged state. The first motor is used as a generator. The hybrid drive system is in a series drive mode.

[0023] In some embodiments, the system further includes a control module that controls the engine, the starting and stopping of the first motor and the second motor, and the engagement / disengagement state of the clutch.

[0024] When the engine, the first motor, and the second motor are activated, the first and second clutch portions of the clutch are in a coupled state, the third clutch portion is in a disengaged state, and the first motor is used as an electric motor; the hybrid drive system is in a first parallel drive mode.

[0025] When the engine, the first motor, and the second motor are turned on, the first clutch and the third clutch are in a coupled state, the second clutch is in a disengaged state, and the first motor is used as an electric motor; the hybrid drive system is in a second parallel drive mode.

[0026] In some embodiments, the system further includes a control module that controls the engine, the starting and stopping of the first motor and the second motor, and the engagement / disengagement state of the clutch.

[0027] When the engine is off, the first motor and the second motor are on, the second clutch is in a coupled state, and the first clutch and the third clutch are in a disengaged state; the first motor is used as an electric motor; the hybrid drive system is in a dual-motor first drive mode;

[0028] When the engine is off, the first motor and the second motor are on, the third clutch is in a coupled state, the first clutch and the second clutch are in a disengaged state, and the first motor is used as an electric motor; the hybrid drive system is in a dual-motor second drive mode.

[0029] In some embodiments, a torque limiter is provided between the output shaft and the first clutch.

[0030] According to an embodiment of the present invention, a second aspect provides an automobile equipped with the aforementioned hybrid powertrain system.

[0031] This invention discloses a hybrid power drive system that controls the coupling states of the three clutch engagement points, enabling the engine and / or the first motor to output power through multiple power transmission paths. The rotor of the first motor is fixedly connected to the clutch housing, allowing it to rotate synchronously with the clutch. When the first clutch engagement point is engaged, the engine transmits power to the housing and rotor; when the second clutch engagement point is engaged, the engine and / or the motor output power through the first transmission assembly; and when the third clutch engagement point is engaged, the engine and / or the motor output power through the first transmission assembly. The first motor can function not only as a generator to produce electricity but also as a motor to provide power. This hybrid power drive system utilizes the engine and / or the first motor as a power source and can selectively connect to either the first or second transmission assembly to output power at different speeds, meeting the vehicle's needs for both driving and power generation. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the hybrid power drive system in one embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the hybrid drive system in the parking power generation mode in the embodiment.

[0034] Figure 3 This is a schematic diagram of the hybrid drive system in pure electric drive mode in the embodiment.

[0035] Figure 4 This is a schematic diagram of the hybrid drive system in series drive mode in the embodiment.

[0036] Figure 5 This is a schematic diagram of the hybrid drive system in the first direct drive mode of the engine in the embodiment.

[0037] Figure 6 This is a schematic diagram of the hybrid drive system in the second direct drive mode of the engine in the embodiment.

[0038] Figure 7 This is a schematic diagram of the hybrid drive system in the first parallel drive mode in the embodiment.

[0039] Figure 8 This is a schematic diagram of the hybrid drive system in the second parallel drive mode in the embodiment.

[0040] Figure 9 This is a schematic diagram of the hybrid drive system in the first dual-motor drive mode in the embodiment.

[0041] Figure 10 This is a schematic diagram of the hybrid drive system in the dual-motor second drive mode in the embodiment.

[0042] In the diagram: Engine 10; Output shaft 11; Torque limiter 12; First motor 20; Clutch 30; First clutch part 31; Second clutch part 32; Third clutch part 33; First transmission assembly 40; First drive shaft 41; First transmission gear 42; Second transmission assembly 50; Second drive shaft 51; Second transmission gear 52; Third transmission assembly 60; Third drive shaft 61; Third transmission gear 62; Fourth transmission gear 63; Fifth transmission gear 64; Differential 70; Sixth transmission gear 71; Second motor 80; Seventh transmission gear 81; Fourth transmission assembly 90; Fourth drive shaft 91; Eighth transmission gear 92; Ninth transmission gear 93. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0044] The structures, proportions, and sizes illustrated in the accompanying drawings are solely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the implementation of this invention. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] like Figure 1 As shown, this embodiment provides a car equipped with a hybrid drive system, which includes an engine 10, a first motor 20, a first transmission assembly 40, a second transmission assembly 50, and a clutch 30.

[0046] The engine 10 includes an output shaft 11, the first motor 20 can be used as a generator and a motor, the first transmission assembly 40 includes a first transmission shaft 41 and a first transmission gear 42; the second transmission assembly 50 includes a second transmission shaft 51 and a second transmission gear 52, wherein the second transmission shaft 51 is rotatably sleeved on the first transmission shaft 41, so that the first transmission gear 42 and the second transmission gear 52 are arranged coaxially and have a compact structure.

[0047] The clutch 30 includes a housing, a first clutch part 31, a second clutch part 32, and a third clutch part 33. The housing is fixedly connected to the rotor of the motor. The first clutch part 31 connects the output shaft 11 and the housing. The second clutch part 32 connects the housing and the first drive shaft 41. The third clutch part 33 connects the housing and the second drive shaft 51.

[0048] The hybrid drive system of this embodiment controls the coupling states of the three clutches of the clutch 30, enabling the engine 10 and / or the first motor 20 to output power through multiple power transmission paths. The rotor of the first motor 20 is fixedly connected to the housing of the clutch 30, allowing the rotor to rotate synchronously with the clutch 30. When the first clutch 31 is coupled, the engine 10 transmits power to the housing and rotor; when the second clutch 32 is coupled, the engine 10 and / or the motor output power through the first transmission assembly 40; and when the third clutch 33 is coupled, the engine 10 and / or the motor output power through the first transmission assembly 40. The first motor 20 can function not only as a generator to produce electricity but also as an electric motor to provide power. This hybrid drive system utilizes the engine 10 and / or the first motor 20 as a power source and can selectively connect to the first transmission assembly 40 or the second transmission assembly 50 to output power at different speeds to meet different vehicle usage needs.

[0049] The hybrid drive system of this embodiment also includes a third transmission assembly 60 and a differential 70. The third transmission assembly 60 includes a third drive shaft 61, a third transmission gear 62, a fourth transmission gear 63, and a fifth transmission gear 64. The third transmission gear 62 meshes with the first transmission gear 42, and the fourth transmission gear 63 meshes with the second transmission gear 52. The differential 70 is provided with a sixth transmission gear 71 that meshes with the fifth transmission gear 64. The power output from the engine 10 and / or the electric motor can be transmitted to the differential 70 through the third transmission assembly 60 or the fourth transmission assembly 90, thereby driving the wheels to rotate. It should be noted that in this embodiment, the cooperation between the first transmission assembly 40 and the third transmission assembly 60, and the cooperation between the second transmission assembly 50 and the third transmission assembly 60, enables two different power transmission routes. That is, the transmission ratio formed by the meshing of the first transmission gear 42 and the third transmission gear 62 is different from the transmission ratio formed by the meshing of the second transmission gear 52 and the fourth transmission gear 63.

[0050] The hybrid drive system of this embodiment also includes a second motor 80, which serves as an electric motor connected to the differential 70. The added second motor 80, connected to the differential 70, can not only output power to the differential 70 independently, but also cooperate with the engine 10 and / or the first motor 20 to output power to the differential 70, thereby making the driving modes of the hybrid system more diverse.

[0051] In this embodiment, the second motor 80 is preferably connected to the differential 70 via a fourth transmission assembly 90. The second motor 80 is equipped with a seventh transmission gear 81. The fourth transmission assembly 90 includes a fourth transmission shaft 91, an eighth transmission gear 92, and a ninth transmission gear 93. The seventh transmission gear 81 meshes with the eighth transmission gear 92, and the ninth transmission gear 93 meshes with the sixth transmission gear 71 to transmit power from the second motor 80 to the differential 70.

[0052] In this embodiment, a torque limiter 12 is preferably provided between the output shaft 11 of the engine 10 and the first clutch part 31. The torque limiter 12 can prevent torque overload and reduce the damage of impact load, thereby extending the service life of the components of the hybrid power system.

[0053] The hybrid power system in this embodiment also includes a control module, which controls the starting and stopping of the engine 10, the first motor 20, and the second motor 80, as well as the engagement and disengagement state of the clutch 30, to achieve the following driving modes:

[0054] See details Figure 2 In the parking power generation mode, the engine 10 and the first motor 20 are turned on, the second motor 80 is turned off, the first clutch part 31 of the clutch 30 is in a coupled state, and the second clutch part 32 and the third clutch part 33 are in a disengaged state; at this time, the first motor 20 is used as a generator, and the engine 10 directly drives the first motor 20 to rotate and generate electricity.

[0055] See details Figure 3 In pure electric drive mode, the vehicle is in a state of sufficient power and low-speed driving; the second motor 80 is turned on, the engine 10 and the first motor 20 are turned off, and the first clutch part 31, the second clutch part 32 and the third clutch part 33 of the clutch 30 are in the disengaged state; the second motor 80 drives the differential 70 to run through the second transmission assembly 50 and the fourth transmission assembly 90.

[0056] See details Figure 4In the series drive mode, the vehicle is in a condition of low battery and low speed. At this time, the engine 10, the first motor 20 and the second motor 80 are engaged, the first clutch part 31 of the clutch 30 is in a coupled state, and the second clutch part 32 and the third clutch part 33 are in a disengaged state. The second motor 80 drives the differential 70 through the second transmission assembly 50. The first motor 20 is used as a generator, and the engine 10 directly drives the first motor 20 to rotate and generate electricity.

[0057] See details Figure 5 In the first direct drive mode of the engine, the vehicle is in a high-speed driving condition; at this time, the engine 10 is turned on, the first motor 20 and the second motor 80 are turned off, the first clutch part 31 and the second clutch part 32 of the clutch 30 are in a coupled state, and the third clutch part 33 is in a disengaged state; the engine 10 drives the differential 70 to run through the first transmission assembly 40 and the third transmission assembly 60.

[0058] See details Figure 6 In the second direct drive mode of the engine, the vehicle is in a high-speed driving condition; at this time, the engine 10 is turned on, the first motor 20 and the second motor 80 are turned off, the first clutch part 31 and the third clutch part 33 of the clutch 30 are in a coupled state, and the second clutch part 32 is in a disengaged state; at this time, the engine 10 drives the differential 70 through the second transmission assembly 50 and the third transmission assembly 60.

[0059] See details Figure 7 In the first parallel drive mode, the vehicle is in a medium-speed or low-speed high-load condition. At this time, the engine 10, the first motor 20 and the second motor 80 are engaged, the first clutch part 31 and the second clutch part 32 of the clutch 30 are coupled, and the third clutch part 33 is disengaged. The first motor 20 is used as an electric motor. The engine 10, in conjunction with the first motor 20, drives the differential 70 through the first transmission assembly 40 and the third transmission assembly 60. The second motor 80 drives the differential 70 through the fourth transmission assembly 90.

[0060] See details Figure 8 In the second parallel drive mode, the vehicle is in a medium-speed or low-speed high-load condition. At this time, the engine 10, the first motor 20, and the second motor 80 are engaged. The first clutch part 31 and the third clutch part 33 of the clutch 30 are coupled, and the second clutch part 32 is disengaged. The first motor 20 is used as an electric motor. The engine 10, in conjunction with the first motor 20, drives the differential 70 through the second transmission assembly 50 and the third transmission assembly 60. The second motor 80 drives the differential 70 through the fourth transmission assembly 90.

[0061] See details Figure 9In the dual-motor first drive mode, the vehicle is in a state of sufficient battery power and medium or high speed driving condition; at this time, the engine 10 is off, the first motor 20 and the second motor 80 are on, the second clutch part 32 of the clutch 30 is in a coupled state, and the first clutch part 31 and the third clutch part 33 are in a disengaged state; the first motor 20 is used as an electric motor, and the first motor 20 drives the differential 70 through the second transmission assembly 50 and the third transmission assembly 60, and the second motor 80 drives the differential 70 through the fourth transmission assembly 90.

[0062] See details Figure 10 In the dual-motor second drive mode, the vehicle is in a state of sufficient battery power and medium or high speed driving condition; at this time, the engine 10 is off, the first motor 20 and the second motor 80 are on, the third clutch part 33 of the clutch 30 is in a coupled state, and the first clutch part 31 and the second clutch part 32 are in a disengaged state; the first motor 20 is used as an electric motor, and the first motor 20 drives the differential 70 through the second transmission assembly 50 and the third transmission assembly 60, and the second motor 80 drives the differential 70 through the fourth transmission assembly 90.

[0063] It should be noted that the control module in this embodiment is a conventional hybrid power control unit. The switching between engine and electric motor operating modes is a prior art technique. The specific classification of low, medium, and high speeds for the vehicle in this embodiment does not have an absolutely unified standard and needs to be determined based on factors such as different vehicle models and powertrain design goals; therefore, this embodiment will not elaborate on this distinction.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A hybrid power drive system, characterized in that, include: Engine (10), which includes an output shaft (11); A first motor (20) comprising a stator and a rotor, the first motor (20) being capable of functioning as a generator and a motor; The first transmission assembly (40) includes a first transmission shaft (41) and a first transmission gear (42). The second transmission assembly (50) includes a second transmission shaft (51) and a second transmission gear (52), wherein the second transmission shaft (51) is rotatably mounted on the first transmission shaft (41); The clutch (30) includes a housing, a first clutch portion (31), a second clutch portion (32) and a third clutch portion (33); The housing is fixedly connected to the rotor of the motor. The first clutch (31) connects the output shaft (11) and the housing. The second clutch (32) connects the housing and the first drive shaft (41). The third clutch (33) connects the housing and the second drive shaft (51).

2. The hybrid drive system according to claim 1, characterized in that: It also includes a third transmission assembly (60) and a differential (70). The third transmission assembly (60) includes a third transmission shaft (61), a third transmission gear (62), a fourth transmission gear (63), and a fifth transmission gear (64). The third transmission gear (62) meshes with the first transmission gear (42), and the fourth transmission gear (63) meshes with the second transmission gear (52). A sixth transmission gear (71) is provided on the differential (70) to mesh with the fifth transmission gear (64).

3. The hybrid drive system according to claim 2, characterized in that: It also includes a second motor (80), which serves as an electric motor to be connected to the differential (70).

4. The hybrid drive system according to claim 3, characterized in that: The second motor (80) is connected to the differential (70) via the fourth transmission assembly (90). The second motor (80) is provided with a seventh transmission gear (81). The fourth transmission assembly (90) includes a fourth transmission shaft (91), an eighth transmission gear (92), and a ninth transmission gear (93). The seventh transmission gear (81) meshes with the eighth transmission gear (92), and the ninth transmission gear (93) meshes with the sixth transmission gear (71).

5. The hybrid drive system according to claim 3, characterized in that: It also includes a control module that controls the starting and stopping of the engine (10) and the first motor (20), and controls the engagement and disengagement state of the clutch (30); When the engine (10) and the first motor (20) are turned on, the second motor (80) is turned off, the first clutch (31) is in a coupled state, the second clutch (32) and the third clutch (33) are in a disengaged state, the first motor (20) is used as a generator, and the hybrid drive system is in a parking power generation mode; When the engine (10) is turned on, the first motor (20) is turned off, the first clutch (31) and the second clutch (32) are in a coupled state, and the third clutch (33) is in a disengaged state; the hybrid drive system is in the first direct drive mode of the engine; When the engine (10) is turned on, the first motor (20) is turned off, the first clutch (31) and the third clutch (33) are in a coupled state, and the second clutch (32) is in a disengaged state; the hybrid drive system is in the second direct drive mode of the engine.

6. The hybrid drive system according to claim 3 or 4, characterized in that: It also includes a control module that controls the starting and stopping of the engine (10), the first motor (20) and the second motor (80), and controls the engagement and disengagement of the clutch (30); When the second motor (80) is turned on, the engine (10) and the first motor (20) are turned off, and the first clutch (31), the second clutch (32) and the third clutch (33) are in the disengaged state; the hybrid drive system is in pure electric drive mode; When the engine (10), the first motor (20) and the second motor (80) are turned on, the first clutch (31) is in a coupled state, the second clutch (32) and the third clutch (33) are in a disengaged state, and the first motor (20) is used as a generator; the hybrid drive system is in a series drive mode.

7. The hybrid drive system according to claim 3 or 4, characterized in that: It also includes a control module that controls the starting and stopping of the engine (10), the first motor (20) and the second motor (80), and controls the engagement and disengagement of the clutch (30); When the engine (10), the first motor (20) and the second motor (80) are activated, the first clutch part (31) and the second clutch part (32) of the clutch (30) are in a coupled state, the third clutch part (33) is in a disengaged state, and the first motor (20) is used as a motor. The hybrid drive system is in the first parallel drive mode; When the engine (10), the first motor (20) and the second motor (80) are turned on, the first clutch (31) and the third clutch (33) are in a coupled state, the second clutch (32) is in a disengaged state, and the first motor (20) is used as a motor; the hybrid drive system is in a second parallel drive mode.

8. The hybrid drive system according to claim 3 or 4, characterized in that: It also includes a control module that controls the starting and stopping of the engine (10), the first motor (20) and the second motor (80), and controls the engagement and disengagement of the clutch (30); When the engine (10) is off, the first motor (20) and the second motor (80) are on, the second clutch (32) is in a coupled state, and the first clutch (31) and the third clutch (33) are in a disengaged state; the first motor (20) is used as an electric motor; The hybrid drive system is in dual-motor first drive mode; When the engine (10) is off, the first motor (20) and the second motor (80) are on, the third clutch (33) is in a coupled state, the first clutch (31) and the second clutch (32) are in a disengaged state, and the first motor (20) is used as a motor. The hybrid drive system has a dual-motor second drive mode.

9. The hybrid drive system according to any one of claims 1-4, characterized in that: A torque limiter (12) is provided between the output shaft (11) and the first clutch (31).

10. A car, characterized in that, The vehicle is equipped with a hybrid drive system as described in any one of claims 1-9.

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