Longitudinal hybrid power rotating device

Abstract

The invention discloses a longitudinally-arranged hybrid power rotating device, and relates to the technical field of automobile new energy, the longitudinally-arranged hybrid power rotating device comprises an input shaft, a generator, a simple planet row, a C1 clutch, a C2 clutch, a driving motor, an NW planet row, a B1 brake, a B2 brake and an output shaft, and the two planet rows, the two clutches and the two brakes are adopted to achieve the functions of series connection, two-gear pure electricity and two-gear direct drive. The structure is compact; a series-parallel hybrid power transmission device of a P13 framework is adopted, an overgear and a deceleration gear are both considered, two-gear pure electric and two-gear direct drive working gears can be achieved, first-gear parallel drive can be achieved, better power can be provided under the starting acceleration and climbing working conditions, fuel economy of the urban working conditions is guaranteed, meanwhile, earlier engine intervention is achieved, and the service life of the engine is prolonged. And satisfactory fuel consumption performance can be provided during high-speed cruise of the vehicle.

Description

Technical Field

[0001] The present invention relates to the field of new energy technologies for automobiles, and in particular to a longitudinal hybrid power rotating device. Background Art

[0002] In the environment where automotive power batteries and fuel cells are restricted by key technologies, charging facilities are not popular, and electric vehicles are difficult to promote in a short period of time, hybrid vehicles have become a more suitable development route due to their mature technology. Hybrid vehicles are driven by engines or motors or both engines and motors, and have multiple driving modes, so that the engine and motor can operate in the high efficiency range as much as possible, thus having good fuel economy and low emissions. At present, there are two forms of hybrid devices, one is the series-parallel mode, such as Honda iMMD, Great Wall Lemon DHT, Chery Kunpeng DHT, BYD DMI; the second is the power split mode, mainly represented by Toyota THS hybrid system, such as Lelink, Corolla, Highlander and other models. The advantages of the transmission system are smooth speed change, high transmission efficiency, and simple structure. The disadvantage is that it does not have a pure engine 1 operation mode, and the transmission ratio of the motor is fixed and cannot be changed.

[0003] The document (CN 112124065 A) discloses a vehicle hybrid power transmission system, characterized in that its main body is provided with an input member, the input member is provided with a planetary gear set and a wheel, the wheels are provided with two, the planetary gear sets are provided with two groups, and the two groups of planetary gear sets are respectively connected to two wheels. There is only one output shaft, and the output shaft needs to pass through a differential before it can be connected to the two wheels, resulting in a hybrid vehicle with many and complex overall parts, and the cost is correspondingly increased. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention conceives a longitudinal hybrid power transmission device, which adopts two sets of planetary gears. The two sets of clutches have a compact structure, realize earlier engine intervention, and can provide satisfactory fuel consumption performance when the vehicle is cruising at high speed.

[0005] One of the technical solutions adopted to realize the present invention is: a longitudinal hybrid power transmission device, characterized in that it includes: an input shaft 1, a generator 2, a simple planetary row, a C1 clutch 7, a C2 clutch 8, a drive motor 9, an NW planetary row, a B1 brake 15, a B2 brake 16 and an output shaft 17, the simple planetary row includes: a sun gear 3, a planetary gear 4, a planetary carrier 5 and a front row inner ring gear 6, the NW planetary row includes: an S1 sun gear 10, an S2 sun gear 11, a double planetary gear 12, an output inner ring gear 13 and a rear row planetary carrier 14, the front row inner ring gear 6 is fixed to the housing, the The sun gear 3 is connected to the motor shaft of the generator 2, one end of the CI clutch 7 is connected to the planetary carrier 5 and the input shaft 1 respectively, the other end of the CI clutch 7 is connected to the rear planetary carrier 14, one end of the C2 clutch 8 is connected to the rear planetary carrier 14, the other end of the C2 clutch 8 is connected to the B1 brake 15 and the S2 sun gear 11, the other end of the B1 brake 15 is connected to the housing, one end of the B2 brake 16 is fixedly connected to the housing, the other end of the B2 brake 16 is connected to the rear planetary carrier 14, and the S1 sun gear 10 is connected to the drive motor 9.

[0006] Furthermore, the drive motor 9 is a DC permanent magnet synchronous drive motor for an electric vehicle.

[0007] Furthermore, the input shaft 1 and the output shaft 17 are made of 45# steel.

[0008] The second technical solution adopted by the present invention is: a transmission method of a longitudinal hybrid power transmission device in pure electric and series mode 1st gear comprises the following steps:

[0009] 4.1) The C1 clutch 7, C2 clutch 8 and B2 clutch 16 are in a non-operating state, and the B1 brake 15 is in an operating state;

[0010] 4.2) The driving motor 9 transmits power to the S1 sun gear 10, the S1 sun gear 10 and the pinion end of the double planetary gear 12, the rear planetary carrier 14 is braked by the B1 brake 15, and the power is transmitted to the output shaft 17 through the inner ring gear 13.

[0011] 4.3) If series power supply is required, the generator 2 can be started to realize the series power supply.

[0012] The third technical solution adopted by the present invention is: a pure electric and series mode 2-speed transmission method of a longitudinal hybrid power transmission device comprises the following steps:

[0013] 5.1) The C1 clutch 7, C2 clutch 8 and B1 clutch 15 are in a non-operating state, and the B2 brake 16 is in an operating state;

[0014] 5.2) The driving motor 9 transmits power to the S1 sun gear 10, the S1 sun gear 10 and the pinion end of the double planetary gear 12, the S2 sun gear 11 is braked by the B2 brake 16, and the power is transmitted to the output shaft 17 through the inner ring gear 13;

[0015] 5.3) If series power supply is required, the generator 2 can be started to realize the series power supply.

[0016] A fourth technical solution for implementing the present invention is: a method for driving a longitudinal hybrid power transmission device in a direct drive 1st gear mode comprises the following steps:

[0017] 6.1) The B1 brake 15 and the B2 brake 16 are in a non-operating state, and the C1 clutch 7 and the C2 clutch 8 are in an operating state;

[0018] 6.2) The engine ENG transmits power to the rear planetary carrier 14 through the input shaft 1 via the C1 clutch 7. The rear planetary carrier 14 is connected to the S2 sun gear 11 through the C2 clutch 8. The power is transmitted to the output shaft 17 through the rear planetary carrier 14 and the output ring gear 13.

[0019] 6.3) If the generator 2 is working, charging can be achieved.

[0020] A fifth technical solution for implementing the present invention is: a method for driving a longitudinal hybrid power transmission device in a direct-drive 2-speed mode comprises the following steps:

[0021] 7.1) The B2 brake 1 and C2 clutch 8 are in a non-working state, and the B1 brake 15 and C2 clutch 8 are in a working state;

[0022] 7.2) Engine ENG transmits power to the rear planetary carrier 14 through the input shaft 1 via the C1 clutch 7, the S2 sun gear 11 is braked by the B2 clutch 16, and the power is transmitted to the output shaft 17;

[0023] 7.3) If the generator 2 is working, charging can be achieved.

[0024] The beneficial effects of a longitudinal hybrid power rotating device of the present invention are embodied in:

[0025] A longitudinal hybrid power transmission device adopts two sets of planetary gears, two sets of clutches, and two sets of brakes to realize the functions of series connection, 2-speed pure electric + 2-speed direct drive, and has a compact structure; a series-parallel hybrid power transmission device adopts a P13 architecture, taking into account both overdrive and reduction gears, and can achieve 2-speed pure electric + 2-speed direct drive working gears, and can drive in parallel in 1 gear, which can provide better power in starting acceleration and climbing conditions, while ensuring fuel economy in urban conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of a longitudinal hybrid power transmission device;

[0027] Figure 2 It is a schematic diagram of a longitudinal hybrid power transmission device in pure electric and series mode 1st gear and reverse gear;

[0028] Figure 3 It is a schematic diagram of a longitudinal hybrid power transmission device in pure electric and series mode 2 gears and reverse gear;

[0029] Figure 4 It is a schematic diagram of a direct drive 1st gear mode of a longitudinal hybrid power transmission;

[0030] Figure 5 It is a schematic diagram of a direct drive 2-speed mode of a longitudinal hybrid power transmission;

[0031] Figure 6 It is a mode state diagram of a longitudinal hybrid power transmission device;

[0032] In the figure: 1. input shaft, 2. generator, 3. sun gear, 4. planetary gear, 5. planetary carrier, 6. front inner ring gear, 7. C1 clutch, 8. C2 clutch, 9. drive motor, 10. S1 sun gear, 11. S2 sun gear, 12. double planetary gear, 13. output inner ring gear, 14. rear planetary carrier, 15. B1 brake, 16. B2 brake, 17. output shaft. DETAILED DESCRIPTION

[0033] The following is combined with Figures 1 to 6 The specific implementation manner will further describe the present invention in detail. To make the purpose, technical scheme and advantages of the implementation manner clearer, the technical scheme in the implementation manner will be clearly and completely described in combination with the embodiments of the present invention. The specific implementation manner described here is only used to explain the present invention and is not used to limit the scope of the present invention.

[0034] As attached Figure 1As shown, a longitudinal hybrid power transmission device comprises: an input shaft 1, a generator 2, a simple planetary gear, a C1 clutch 7, a C2 clutch 8, a drive motor 9, an NW planetary gear, a B1 brake 15, a B2 brake 16 and an output shaft 17, wherein the simple planetary gear comprises: a sun gear 3, a planetary gear 4, a planetary carrier 5 and a front row inner ring gear 6, the NW planetary gear comprises: an S1 sun gear 10, an S2 sun gear 11, a double planetary gear 12, an output inner ring gear 13 and a rear row planetary carrier 14, the front row inner ring gear 6 is fixed to the housing, the sun gear 3 is connected to the motor shaft of the generator 2, and one end of the CI clutch 7 is respectively The planet carrier 5 is connected to the input shaft 1, the other end of the CI clutch 7 is connected to the rear planet carrier 14, one end of the C2 clutch 8 is connected to the rear planet carrier 14, the other end of the C2 clutch 8 is connected to the B1 brake 15 and the S2 sun gear 11, the other end of the B1 brake 15 is connected to the housing, one end of the B2 brake 16 is fixedly connected to the housing, the other end of the B2 brake 16 is connected to the rear planet carrier 14, the S1 sun gear 10 is connected to the drive motor 9, the drive motor 9 is a DC permanent magnet synchronous drive motor for an electric vehicle, and the input shaft 1 and the output shaft 17 are made of 45 steel.

[0035] Embodiment 1:

[0036] A transmission method for pure electric and series mode 1st gear of a longitudinal hybrid power transmission device, comprising the following steps:

[0037] 1) The C1 clutch 7, C2 clutch 8 and B2 clutch 16 are in a non-operating state, and the B1 brake 15 is in an operating state, as shown in the attached Figure 2 As shown;

[0038] 2) The driving motor 9 transmits power to the S1 sun gear 10, the S1 sun gear 10 and the pinion end of the double planetary gear 12, the rear planetary carrier 14 is braked by the B1 brake 15, and the power is transmitted to the output shaft 17 through the inner ring gear 13.

[0039] 3) If series power supply is required, the generator 2 can be started to realize series power supply.

[0040] Embodiment 2:

[0041] A transmission method for pure electric and series mode 1st gear of a longitudinal hybrid power transmission device, comprising the following steps:

[0042] 1) The C1 clutch 7, C2 clutch 8 and B2 clutch 16 are in a non-operating state, and the B1 brake 15 is in an operating state, as shown in the attached Figure 3 As shown;

[0043] 2) The driving motor 9 transmits power to the S1 sun gear 10, the S1 sun gear 10 and the pinion end of the double planetary gear 12, the rear planetary carrier 14 is braked by the B1 brake 15, and the power is transmitted to the output shaft 17 through the inner ring gear 13.

[0044] 3) If series power supply is required, the generator 2 can be started to realize series power supply.

[0045] Embodiment 3:

[0046] A pure electric and series mode 2-speed transmission method for a longitudinal hybrid power transmission device, comprising the following steps:

[0047] 1) The C1 clutch 7, C2 clutch 8 and B1 clutch 15 are in a non-operating state, and the B2 brake 16 is in an operating state, as shown in the attached Figure 4 As shown;

[0048] 2) The driving motor 9 transmits power to the S1 sun gear 10, the S1 sun gear 10 and the pinion end of the double planetary gear 12, the S2 sun gear 11 is braked by the B2 brake 16, and the power is transmitted to the output shaft 17 through the inner ring gear 13;

[0049] 3) If series power supply is required, the generator 2 can be started to realize series power supply.

[0050] Embodiment 4:

[0051] A method for direct-drive 2-gear mode transmission of a longitudinal hybrid power transmission device, comprising the following steps:

[0052] 1) The B2 brake 1 and C2 clutch 8 are in a non-operating state, and the B1 brake 15 and C2 clutch 8 are in an operating state as shown in the attached figure. Figure 5 As shown,

[0053] 2) Engine ENG transmits power through input shaft 1, via C1 clutch 7 to rear planetary carrier 14, S2 sun gear 11 is braked by B2 clutch 16, and power is transmitted to output shaft 17;

[0054] 3) If the generator 2 is working, charging can be achieved.

[0055] A longitudinal hybrid transmission device takes into account both overdrive and reduction gears, adopts a P13 architecture series-parallel hybrid power transmission, and can achieve 2-speed pure electric + 2-speed direct drive working gears. It can not only achieve earlier engine intervention, but also provide satisfactory fuel consumption performance when the vehicle is cruising at high speed. Figure 6 As shown, in 1st gear parallel drive, better power can be provided in starting, acceleration and climbing conditions, while ensuring fuel economy in urban conditions.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A longitudinal hybrid power transmission device, characterized in that it include: An input shaft (1), a generator (2), a simple planetary gear, a C1 clutch (7), a C2 clutch (8), a drive motor (9), an NW planetary gear, a B1 brake (15), a B2 brake (16) and an output shaft (17), wherein the simple planetary gear comprises: a sun gear (3), a planetary gear (4), a planetary carrier (5) and a front row inner ring gear (6), and the NW planetary gear comprises: an S1 sun gear (10), an S2 sun gear (11), a double planetary gear (12), an output inner ring gear (13) and a rear row planetary carrier (14), wherein the front row inner ring gear (6) is fixed to a housing, and the sun gear (3) is connected to the motor shaft of the generator (2). One end of the CI clutch (7) is connected to the planet carrier (5) and the input shaft (1) respectively, the other end of the CI clutch (7) is connected to the rear planet carrier (14), one end of the C2 clutch (8) is connected to the rear planet carrier (14), the other end of the C2 clutch (8) is connected to the B1 brake (15) and the S2 sun gear (11), the other end of the B1 brake (15) is connected to the housing, one end of the B2 brake (16) is fixedly connected to the housing, the other end of the B2 brake (16) is connected to the rear planet carrier (14), and the S1 sun gear (10) is connected to the drive motor (9).

2. A longitudinal hybrid power transmission device according to claim 1, characterized in that: The drive motor (9) is a DC permanent magnet synchronous drive motor for an electric vehicle.

3. A longitudinal hybrid power transmission device according to claim 1, characterized in that: The input shaft (1) and the output shaft (17) are made of 45# steel.

4. A longitudinal hybrid power transmission device according to claim 1, characterized in that: The transmission method of the pure electric and series mode 1st gear comprises the following steps: 4.1) The C1 clutch (7), C2 clutch (8) and B2 clutch (16) are in a non-operating state, and the B1 brake (15) is in an operating state; 4.2) The driving motor (9) transmits power to the S1 sun gear (10), the S1 sun gear (10) and the pinion end of the double planetary gear (12), the rear planetary carrier (14) is braked by the B1 brake (15), and the power is transmitted to the output shaft (17) by the inner ring gear (13). 4.3) If series power supply is required, the generator (2) can be started to realize series power supply.

5. A longitudinal hybrid power transmission device according to claim 1, characterized in that: The pure electric and series mode 2-speed transmission method includes the following steps: 5.1) The C1 clutch (7), C2 clutch (8) and B1 clutch (15) are in a non-operating state, and the B2 brake (16) is in an operating state; 5.2) The driving motor (9) transmits power to the S1 sun gear (10), the S1 sun gear (10) and the pinion end of the double planetary gear (12), the S2 sun gear (11) is braked by the B2 brake (16), and the power is transmitted to the output shaft (17) through the inner ring gear (13); 5.3) If series power supply is required, the generator (2) can be started to realize series power supply.

6. A longitudinal hybrid power transmission device according to claim 1, characterized in that: The direct drive 1st gear mode transmission method comprises the following steps: 6.1) The B1 brake (15) and the B2 brake (16) are in a non-operating state, and the C1 clutch (7) and the C2 clutch (8) are in an operating state; 6.2) The engine ENG transmits power to the rear planetary carrier (14) through the input shaft (1) via the C1 clutch (7). The rear planetary carrier (14) is connected to the S2 sun gear (11) via the C2 clutch (8). The power is transmitted to the output shaft (17) through the rear planetary carrier (14) and the output ring gear (13) in synchronization with each other in speed. 6.3) If the generator (2) is working, charging can be achieved.

7. A longitudinal hybrid power transmission device according to claim 1, characterized in that: The direct drive 2-speed mode transmission method includes the following steps: 7.1) The B2 brake (1) and the C2 clutch (8) are in a non-operating state, and the B1 brake (15) and the C2 clutch (8) are in an operating state; 7.2) The engine ENG transmits power through the input shaft (1) and the C1 clutch (7) to the rear planetary carrier (14). The S2 sun gear (11) is braked by the B2 clutch (16) and the power is transmitted to the output shaft (17); 7.3) If the generator (2) is working, charging can be achieved.

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