CN204567261U - Many power input hybrid drives - Google Patents

Abstract

The utility model relates to a multi-power input hybrid driving device, which belongs to the technical field of hybrid electric vehicles. It includes a first input shaft, a second input shaft, a third input shaft, an output shaft, an engine, a generator and a driving motor, the output shaft is connected to the final drive, the final drive is connected to the driving wheels, and the power output of the engine end is connected with the third input shaft, the power output end of the generator is connected with the first input shaft, and the power output end of the driving motor is connected with the second input shaft; the first input shaft is provided with a first driving gear, The second input shaft is provided with a second driving gear, the third input shaft is provided with a first driven gear, the output shaft is provided with a second driven gear, the first driving gear and the first A driven gear meshes, and the second driving gear meshes with the second driven gear; a power interruption device is provided between the third input shaft and the output shaft. The utility model can realize multiple driving modes and is easy to control.

Description

Multiple Power Input Hybrid Drive

technical field

The utility model belongs to the technical field of hybrid electric vehicles, in particular to a multi-power input hybrid driving device.

Background technique

With the depletion of oil resources and the increasing pollution of automobiles, the world's major automobile manufacturers have invested heavily in the research and development of hybrid electric vehicles, among which plug-in hybrid is the most fuel-efficient solution other than pure electric solutions. From the perspective of power coupling, plug-in hybrid electric vehicle power drives are usually divided into three categories: parallel schemes, series schemes, and hybrid schemes.

The parallel connection scheme refers to that the engine and the electric motor jointly drive the car, wherein the engine and the electric motor belong to two sets of power systems, which can provide torque to the driving wheels separately. When the vehicle is running at a medium or low speed, the engine does not work, and the motor drives the vehicle to achieve pure electric driving conditions; when the vehicle accelerates rapidly or climbs a slope, the engine and the motor drive the vehicle together to make the vehicle more dynamic; and When the vehicle is running at high speed, the vehicle is only driven by the engine. It is commonly used to connect an electric-generator integrated motor through two clutches between the engine and the gearbox. The parallel scheme requires a large installation space and is usually used for medium and large vehicles with front and rear drive.

The power source of the series scheme is composed of an engine, a generator and an electric motor. The engine drives the generator to generate electricity, and the electric energy is transmitted to the battery or the drive motor through the motor controller, and finally the drive motor drives the vehicle through the final reducer or gearbox. When the load of the vehicle is low, the battery supplies power to the motor to drive the vehicle; when the load is high, the battery and the engine-generator set jointly supply power to the motor to drive the vehicle. The series scheme enables the engine to work near the economic speed, but the series scheme has the phenomenon of multiple energy conversions, and the efficiency is low.

The hybrid scheme includes the characteristics of the parallel scheme and the series scheme. The power system includes an engine, a generator and an electric motor. According to the driving conditions, it is determined that the system adopts a parallel scheme or a series scheme. The control of the hybrid scheme is simple, but the structure is complex.

For example, the patent of notification number CN1898482B adopts the engine and two motors to be connected through a set of planetary gear system, and realizes power coordination and speed change through the planetary gear system to meet the driving requirements of the whole vehicle. The power transmission path of this method is complex, and there is unnecessary conversion of mechanical energy-electric energy-mechanical energy in the power transmission process, which will reduce the pure electric mileage when used in plug-in hybrid power. Another example is the patent of Publication No. CN101152837B. After the engine is directly connected to the starter generator, the clutch is connected to the input shaft of the speed change mechanism, the drive motor is connected to the output shaft of the speed change mechanism, and the output shaft of the speed change mechanism is connected to the wheel through the differential. connect. In order to meet the requirements of climbing, rapid acceleration and other working conditions when the vehicle is driven purely electric, the torque of the driving motor is relatively large, and the corresponding motor size will also be relatively large, so the overall size of the driving system is relatively large, which is affected by the layout of the engine room. limit.

Utility model content

The purpose of the utility model is to provide a multi-power input hybrid drive device for the defects of the prior art. Especially plug-in and range-extended hybrid electric vehicles.

The technical scheme adopted by the utility model is: comprising a first input shaft, a second input shaft, a third input shaft, an output shaft, an engine, a generator and a drive motor, the output shaft is connected to the main reducer, and the main reducer connected to drive wheels, the engine power output end is connected to the third input shaft, the generator power output end is connected to the first input shaft, and the drive motor power output end is connected to the second input shaft; the first input The shaft is provided with a first driving gear, the second input shaft is provided with a second driving gear, the third input shaft is provided with a first driven gear, and the output shaft is provided with a second driven gear , the first driving gear meshes with the first driven gear, and the second driving gear meshes with the second driven gear; a power interruption device is provided between the third input shaft and the output shaft.

In a further preferred structure, the electrical input end of the generator is electrically connected to the output end of the generator controller, the electrical input end of the drive motor is electrically connected to the output end of the drive motor controller, and the generator controller, drive motor controller The input ends are respectively electrically connected to the output ends of the high-voltage energy storage device.

In a further preferred structure, the input end of the high-voltage energy storage device is electrically connected to the output end of the on-board charger.

In a further preferred structure, the input end of the on-board charger is electrically connected to the charging plug of the mains.

In a further preferred structure, the first input shaft, the second input shaft and the third input shaft are arranged in parallel.

In the utility model, the multi-input-shaft hybrid transmission box includes an engine, a generator, a drive motor, three parallel input shafts and an output shaft, a power interruption device, and multiple pairs of meshing gears. In high-speed working conditions, the engine is driven independently, the generator and drive motor do not work, and the power interruption device in the multi-input shaft hybrid transmission box is combined, and the power of the engine is transmitted to the final reducer through the multi-input shaft hybrid transmission box . During pure electric driving, the power interruption device is separated, and the power of the driving motor is transmitted to the final drive through the input shaft of the multi-input shaft hybrid transmission box to drive the vehicle. In some specific working conditions of the vehicle, such as sports mode, in order to ensure excellent acceleration performance, the power interruption device is combined, and the engine, generator, and drive motor output power to the multi-input shaft hybrid transmission at the same time. The power of the three After being coupled to the output shaft of the multi-input shaft hybrid transmission box, it is transmitted to the final reducer to drive the vehicle. When the car is decelerating or braking, the power interruption device is separated, and the driving motor acts as a generator for energy regeneration, converting the kinetic energy of the vehicle into electrical energy.

Because the utility model cancels the power distribution device and electromechanical coupling system with complex structure, the utility model dual-motor hybrid driving device has a simple structure, and uses two small motors to drive separately, which can effectively reduce the motor power and motor volume when driven by a single motor. Small footprint, high transmission efficiency; various operating conditions, can realize multiple modes such as single-motor pure electric drive, engine and motor parallel drive, extended-range hybrid drive, etc., and is easy to control.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure, 1-engine, 2-generator, 3-drive motor, 4-multi-input shaft hybrid transmission box, 5-generator controller, 6-drive motor controller, 7-high voltage energy storage device, 8 -Vehicle charger, 9-mains charging plug, 10-final reducer, 11-driving wheel, 12-output shaft, 13-power interruption device, 14-first driving gear, 15-first driven gear, 16 - second driving gear, 17 - second driven gear, 18 - first input shaft, 19 - second input shaft, 20 - third input shaft.

detailed description

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the utility model, but they do not limit the utility model.

As shown in Figure 1, the utility model comprises a first input shaft 18, a second input shaft 19, a third input shaft 20, an output shaft 12, an engine 1, a generator 2 and a drive motor 3, and the output shaft 12 is connected to the final drive 10. The final drive 10 is connected to the driving wheels 11, the power output end of the engine 1 is connected to the third input shaft 20, the power output end of the generator 2 is connected to the first input shaft 18, and the power output end of the drive motor 3 is connected to the second input shaft 19 Connect; the first input shaft 18 is provided with the first driving gear 14, the second input shaft 19 is provided with the second driving gear 16, the third input shaft 20 is provided with the first driven gear 15, and the output shaft 12 is provided with There is a second driven gear 17, the first driving gear 14 meshes with the first driven gear 15, and the second driving gear 16 meshes with the second driven gear 17; a power drive is provided between the third input shaft 20 and the output shaft 12. Interrupt device 13. Wherein, the first input shaft 18 , the second input shaft 19 and the third input shaft 20 are arranged in parallel. The power interruption device 13 in this embodiment can be a clutch.

The electrical input end of the generator 1 is electrically connected to the output end of the generator controller 5, the electrical input end of the drive motor 3 is electrically connected to the output end of the drive motor controller 6, and the input ends of the generator controller 5 and the drive motor controller 6 are respectively connected to the high voltage The output end of the energy storage device 7 is electrically connected. The input end of the high-voltage energy storage device 7 is electrically connected to the output end of the on-board charger 8 . The input end of the on-board charger 8 is electrically connected to the mains charging plug 9 .

In the embodiment of the utility model, pure electric mode, engine drive mode, series drive mode/extended range mode, engine-motor parallel drive mode, energy regeneration recovery mode, driving power generation mode and parking power generation mode can be realized.

Pure electric mode: In this mode, the power interruption device 13 is separated, and the power of the drive motor 3 is transmitted to the final drive 10 through the output shaft 12 of the multi-input shaft hybrid transmission box 4 to drive the vehicle forward.

Engine driving mode: in this mode, the power interruption device 13 is in a combined state, the generator 2 and the drive motor 3 are not working, and the engine 1 outputs power to the multi-input shaft hybrid transmission box 4 alone to drive the vehicle.

Series drive mode/range-extended mode: When the high-voltage energy storage device 7 of the vehicle is low in power and insufficient to support the vehicle for pure electric driving, the hybrid drive device will switch to the series drive mode/range-extended mode. In this mode, the power interrupting device 13 is separated, the engine 1 drives the generator 2 to generate electricity, supplies the driving motor 3 and the high-voltage energy storage device 7, and the driving motor 3 drives the vehicle to travel.

Driving power generation mode: The driving power generation mode is close to the series drive mode/extended range mode. When the engine 1 drives the generator 2 to generate electricity, if the electric energy required by the drive motor 3 to drive the vehicle is less than the electric energy provided by the generator 2, the excess electric energy will be received by the high-voltage energy storage device 7 until the power of the high-voltage energy storage device 7 reaches the preset limit .

Engine-motor parallel drive mode: In order to make the vehicle have excellent power performance, such as overtaking acceleration, the hybrid drive device can realize multi-power parallel drive mode. At this time, the power interruption device 13 is combined, and the engine 1, the generator 2, and the driving motor 3 output power to the multi-input shaft hybrid transmission box 4 simultaneously, and the power of the three is on the output shaft 12 of the multi-input shaft type hybrid transmission box 4. After coupling, it is transmitted to the final reducer 10 to drive the vehicle.

Parking power generation mode: when the power of the high-voltage energy storage device 7 is too low to allow the vehicle to start, the hybrid drive device enters the parking power generation mode. In this mode, the power interruption device 13 is disconnected, the driving motor 3 does not work, and the whole vehicle stops. The engine 1 drives the generator 2 to generate electricity, and charges the high-voltage energy storage device 7 until the power of the high-voltage energy storage device 7 reaches a preset limit.

Energy regeneration recovery mode: when the car is coasting or braking to decelerate, the power interruption device 13 is separated, and the drive motor 3 acts as a generator for energy regeneration, converting the kinetic energy of the vehicle into electrical energy and storing it in the high-voltage energy storage device 7 .

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (5)

1. the input of power more than one kind hybrid drive, comprise the first input shaft (18), second input shaft (19), 3rd input shaft (20), output shaft (12), driving engine (1), electrical generator (2) and drive motor (3), described output shaft (12) connects main reduction gear (10), described main reduction gear (10) connects driving wheel (11), it is characterized in that: described driving engine (1) clutch end is connected with the 3rd input shaft (20), described electrical generator (2) clutch end is connected with the first input shaft (18), described drive motor (3) clutch end is connected with the second input shaft (19), described first input shaft (18) is provided with the first driving gear (14), described second input shaft (19) is provided with the second driving gear (16), described 3rd input shaft (20) is provided with the first driven gear (15), described output shaft (12) is provided with the second driven gear (17), described first driving gear (14) is engaged with the first driven gear (15), and described second driving gear (16) is engaged with the second driven gear (17), power-interruption device (13) is provided with between described 3rd input shaft (20) and output shaft (12).

2. many power input hybrid drives according to claim 1, it is characterized in that: described electrical generator (1) electrical input terminal is electrically connected with engine controller (5) mouth, described drive motor (3) electrical input terminal is electrically connected with drive motor controller (6) mouth, and described engine controller (5), drive motor controller (6) input end are electrically connected with high-voltage energy storage device (7) mouth respectively.

3. many power input hybrid drives according to claim 2, is characterized in that: described high-voltage energy storage device (7) input end is electrically connected with Vehicular charger (8) mouth.

4. many power input hybrid drives according to claim 3, is characterized in that: described Vehicular charger (8) input end is electrically connected commercial power charged plug (9).

5. many power input hybrid drives according to claim 1, is characterized in that: described first input shaft (18), the second input shaft (19) and the 3rd input shaft (20) be arranged in parallel.