Multi-mode hybrid power transmission device and vehicle comprising same

Abstract

The utility model relates to a multi-mode hybrid power transmission device and a vehicle comprising the same, the multi-mode hybrid power transmission device comprises an input shaft used for receiving power from a first power source; the first planet row comprises a first component, a second component and a third component, the first component is connected to the input shaft, the second component is connected to a second power source, and the third component is connected to one side of a first clutch and one side of a second clutch; the second planet row comprises a fourth component, a fifth component and a sixth component, the fourth component is connected to the other side of the second clutch, the fifth component is connected to a third power source, and the third component is connected to a fixing component; and an output shaft connected to the fourth member. The fuel economy and dynamic property of the engine are improved, the efficiency of the motor is improved, the service life of the motor is prolonged, the endurance mileage of a vehicle is increased, and the radial size of the transmission device is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission, and in particular relates to a multi-mode hybrid power transmission device and a vehicle comprising the device. Background Art

[0002] Chinese patent CN 2021104803343 discloses a hybrid power transmission device, including a first shaft capable of receiving power from a first power source; a second shaft capable of receiving power from a second power source and a third power source; a third shaft parallel to the first shaft and the second shaft and capable of receiving power from the second shaft; a first switching element disposed on the second shaft; a second switching element disposed on the third shaft; and a plurality of gears distributed on the first shaft, the second shaft, and the third shaft.

[0003] With the development of hybrid vehicle technology and market demand, there is still room for improvement in multi-mode hybrid transmission devices to achieve goals such as more compact structure, simpler construction and lower cost. Utility Model Content

[0004] For this reason, the utility model proposes the following scheme.

[0005] A multi-mode hybrid power transmission device, the multi-mode hybrid power transmission device comprising:

[0006] An input shaft for receiving power from a first power source;

[0007] A first planetary gear, comprising a first member, a second member and a third member, wherein the first member is connected to the input shaft, the second member is connected to a second power source, and the third member is connected to one side of a first clutch and a second clutch;

[0008] A second planetary gear, comprising a fourth member, a fifth member and a sixth member, wherein the fourth member is connected to the other side of the second clutch, the fifth member is connected to a third power source, and the third member is connected to a fixed member;

[0009] An output shaft is connected to the fourth member.

[0010] According to one aspect of the present invention, the input shaft is connected to the other side of the first clutch.

[0011] According to one aspect of the present utility model, the one side of the first clutch and the one side of the second clutch are fixedly connected.

[0012] According to one aspect of the utility model, the output shaft is coaxially arranged with the input shaft.

[0013] According to one aspect of the utility model, the first component is a planet carrier, the second component is a sun gear, the third component is a ring gear, the fourth component is a planet carrier, the fifth component is a sun gear, and the sixth component is a ring gear.

[0014] The utility model also provides a vehicle, comprising the above-mentioned multi-mode hybrid power transmission device and the first power source, the second power source and the third power source.

[0015] According to one aspect of the present utility model, the first clutch and the second clutch are located between the first planetary gear and the second planetary gear in the axial direction.

[0016] According to one aspect of the present utility model, the first clutch and the second clutch are located between the first planetary gear and the third power source in the axial direction.

[0017] According to one aspect of the present invention, the first power source is an internal combustion engine, and the second power source and the third power source are electric motors.

[0018] The utility model also proposes a method for operating the above-mentioned vehicle, which operates the first power source, the second power source, the third power source and the first clutch and the second clutch so that the vehicle operates in the following mode:

[0019] Pure electric mode: the first power source and the second power source are not working, the third power source is working, and both clutches are disengaged;

[0020] Series mode: the first power source outputs power, the second power source receives power, the third power source works, the first clutch is closed, and the second clutch is disengaged;

[0021] Parallel mode: the first power source outputs power, the second power source works, the third power source works, and both clutches are closed;

[0022] In the eCVT mode, the first power source is in operation, the second power source is used to adjust the working state of the first power source, the third power source is in operation, the first clutch is disengaged, and the second clutch is engaged;

[0023] Parking power generation mode: the first power source is working, the second power source receives energy from the first power source, the third power source is not working, the first clutch is engaged, and the second clutch is disengaged.

[0024] Descriptions of directions that may be used in the above description, such as "upper", "lower", "inner", "outer", "radial", "axial", etc., unless otherwise specified, are only for the convenience of description and are not intended to form any limitation on the technical solution of the utility model. In addition, terms such as "first", "second", etc. are used in the above to describe the elements of the present application. These terms are only used to distinguish the elements without limiting the nature, sequence, order or number of these elements, and these terms may be different from the terms used in the description to be made in conjunction with the drawings below, but those skilled in the art can know the corresponding relationship between them.

[0025] The output shafts of all power sources in the utility model are on one axis, which greatly reduces the radial size of the entire transmission device and is conducive to the arrangement of the transmission device in the longitudinal direction of the vehicle. In addition, the utility model can realize five working modes, namely, pure electric mode, series mode, parallel mode, eCVT mode, and parking power generation mode. The first power source, the second power source, the third power source and the switching element are controlled according to the vehicle speed, the driver's power demand and the battery SOC, so that the vehicle can travel in different modes, and the vehicle's continuously variable speed function can be realized, the fuel economy and power of the engine are improved, the efficiency and life of the motor are improved, and the vehicle's cruising range is increased.

[0026] Other advantages of the present invention will be further described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Exemplary embodiments of the present invention are described with reference to the accompanying drawings, in which:

[0028] Figure 1 A schematic diagram of a first embodiment of a multi-mode hybrid power transmission device of the present invention is shown.

[0029] Figure 2 A schematic diagram of a second embodiment of a multi-mode hybrid power transmission device of the present invention is shown. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present invention. However, it is obvious to those skilled in the art that the implementation of the present invention may not have some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, any combination of the features and elements described below may be considered to implement the present invention, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments and advantages are for illustrative purposes only and should not be regarded as features or limitations of the claims unless clearly stated in the claims.

[0031] Figure 1 The schematic diagram of the first embodiment of the multi-mode hybrid power transmission device of the utility model is shown. The multi-mode hybrid power transmission device mainly includes an engine 1, a torsional damper 2, a first shaft 3, a first motor 4, a first sun gear 5, a first planetary carrier 6, a first ring gear 7, a first clutch 8, a second clutch 9, a second ring gear 10, a second planetary carrier 11, a second sun gear 12, a second motor 13, and a second shaft 14.

[0032] References Figure 1 The vehicle of the utility model includes a multi-mode hybrid power transmission device, including three power sources: an engine 1, a first motor 4 and a second motor 13; two clutches: a first clutch 8 and a second clutch 9; a torque damper: a torsional damper 2; two shafts arranged in the same direction: a first shaft 3 and a second shaft 14; two planetary rows: a first sun gear 5, a first planetary carrier 6, a first ring gear 7, a second ring gear 10, a second planetary carrier 11 and a second sun gear 12.

[0033] The first shaft 3 is used to connect the power of the engine 1 and the first motor 4. The engine 1 can be connected to the first shaft 3 through the torsion damper 2. The engine and the torsion damper 2 can adopt the forms known in the prior art. A planetary gear structure is designed between the first motor 4 and the first shaft 3. Specifically, the first motor 4 is connected to the first sun gear 5, the first shaft 3 is connected to the first planet carrier 6, and the first ring gear 7 is connected to the first clutch 8 and the second clutch 9.

[0034] The second shaft 14 is used as an output shaft, and is used to output the power of the engine 1, the first motor 4, and the second motor 13 to the subsequent connection mechanism. The second shaft 14 is connected to the second clutch 9 and the second planetary carrier 11. The second clutch 9 is used for power input from the engine 1 and the first motor 4. The second planetary carrier 11 is connected to the second motor 13 through the second sun gear 12 to achieve power input.

[0035] The first clutch 8 and the second clutch 9 can be a plate clutch and an electromagnetic clutch, and can also be a synchronizer and a dog clutch.

[0036] The second ring gear 10 is connected to a stationary member, such as a housing of the transmission.

[0037] The following is based on Figure 1 The specific structure shown is combined with Table 1 to illustrate its working method.

[0038]

[0039] Pure electric mode: the first clutch 8 and the second clutch 9 are in the disengaged state, the engine 1 and the first motor 4 are not working, and the second motor 13 drives and recovers energy. Power transmission path: second motor 13 → second sun gear 12 → second planetary carrier 11 → second shaft 14.

[0040] Series mode: the first clutch 8 is engaged, the second clutch 9 is disengaged, the engine 1 drives, the first motor 4 generates electricity, and the second motor 13 drives and recovers energy. Two power transmission paths: engine 1 → torsional damper 2 → first shaft 3 → first ring gear 7 → first planetary carrier 6 → first sun gear 5 → first motor 4, second motor 13 → second sun gear 12 → second planetary carrier 11 → second shaft 14.

[0041] Parallel mode: The first clutch 8 and the second clutch 9 are in the engaged state, the engine 1 is driven, and the first motor 4 and the second motor 13 are driven and recover energy. Power transmission path: engine 1→torsion damper 2→first shaft 3→first clutch 8→(first motor 4→first sun gear 5→first planetary carrier 6→first ring gear 7)→second clutch 9→(second motor 13→second sun gear 12→second planetary carrier 11)→second shaft 14, the power is transmitted at the second clutch 9 and the second shaft 14.

[0042] eCVT mode: the second clutch 9 is in the engaged state, the first clutch 8 is in the disengaged state, the engine 1 is driven, the first motor 4 adjusts the engine speed in the speed mode so that the engine always works in the high-efficiency speed area, and the second motor 13 drives and recovers energy. Engine 1→torsion damper 2→first shaft 3→(first motor 4→first sun gear 5)→first planetary carrier 6→first ring gear 7→second clutch 9→(second motor 13→second sun gear 12→second planetary carrier 11)→second shaft 14. The power is transmitted at the first planetary carrier 6 and the second shaft 14.

[0043] Parking power generation mode: engine 1 → torsional damper 2 → first shaft 3 → first ring gear 7 → first planetary carrier 6 → first sun gear 5 → first motor 4.

[0044] The utility model can realize five working modes, namely, pure electric mode, series mode, parallel mode, eCVT mode, and parking power generation mode. The first power source, the second power source, the third power source, and the switching element are controlled according to the vehicle speed, the driver's power demand, and the battery SOC, so that the vehicle can travel in different modes and realize the vehicle's continuously variable speed function, improve the fuel economy and power of the engine, improve the efficiency and life of the motor, and increase the vehicle's cruising range.

[0045] Figure 2 FIG. 2 is a schematic diagram showing a second embodiment of the multi-mode hybrid power transmission device of the present utility model. Figure 2In the embodiment, the first motor 4, the first planetary gear set, the second motor 13 and the second planetary gear set are arranged in sequence in the axial direction.

[0046] The above description is merely an exemplary embodiment of the spirit and principle of the present invention. It will be appreciated by those skilled in the art that various changes may be made to the described examples without departing from the spirit and principle, and these changes and their various equivalents are anticipated by the applicant and fall within the scope defined by the claims of the present invention.

Claims

1. A multi-mode hybrid power transmission device, characterized in that: The multi-mode hybrid transmission comprises: An input shaft for receiving power from a first power source; A first planetary gear, comprising a first member, a second member and a third member, wherein the first member is connected to the input shaft, the second member is connected to a second power source, and the third member is connected to one side of a first clutch and a second clutch; A second planetary gear, comprising a fourth member, a fifth member and a sixth member, wherein the fourth member is connected to the other side of the second clutch, the fifth member is connected to a third power source, and the third member is connected to a fixed member; An output shaft is connected to the fourth member.

2. The multi-mode hybrid transmission according to claim 1, characterized in that: The input shaft is connected to the other side of the first clutch.

3. The multi-mode hybrid transmission according to claim 1, characterized in that: The one side of the first clutch and the one side of the second clutch are fixedly connected.

4. The multi-mode hybrid transmission according to any one of claims 1 to 3, characterized in that: The output shaft is coaxially arranged with the input shaft.

5. The multi-mode hybrid transmission according to any one of claims 1 to 3, characterized in that: The first component is a planet carrier, the second component is a sun gear, the third component is a ring gear, the fourth component is a planet carrier, the fifth component is a sun gear, and the sixth component is a ring gear.

6. A vehicle, characterized in that: The invention comprises a multi-mode hybrid power transmission device according to any one of claims 1 to 5 and the first power source, the second power source and the third power source.

7. The vehicle according to claim 6, characterized in that The first clutch and the second clutch are located between the first planetary gear and the second planetary gear in the axial direction.

8. The vehicle according to claim 6, characterized in that The first clutch and the second clutch are located between the first planetary gear and the third power source in the axial direction.

9. The vehicle according to any one of claims 6 to 8, characterized in that: The first power source is an internal combustion engine, and the second power source and the third power source are electric motors.

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