CN215944275U

CN215944275U - Hybrid power driving device

Info

Publication number: CN215944275U
Application number: CN202120296674.6U
Authority: CN
Inventors: 吕亚民; 林洪立
Original assignee: Henan Jinkaidi New Energy Technology Co ltd
Current assignee: Henan Jinkaidi New Energy Technology Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2022-03-04
Anticipated expiration: 2031-01-27

Abstract

A straight gear is arranged between a driven bevel gear and a driven bevel gear fixing disc in a rear axle, a driving motor is arranged on the other side of the rear axle corresponding to a transmission shaft, and a gear transmission mechanism is formed by a gear arranged on an output shaft of the motor and the straight gear. The gearbox is provided with a vehicle speed sensor and a power takeoff which drives the generator to generate electricity. The vehicle is provided with a gear sensor, the controller limits the highest rotating speed of the motor according to a gear signal of the gear sensor, and the highest rotating speed of the motor of each gear is in direct proportion to the transmission rotating speed of each gear of the gearbox. The speed sensor signal and the controller overload current signal are used for finely adjusting the rotation speed of the motor.

Description

Hybrid power driving device

Technical Field

The utility model relates to a hybrid power driving device, and belongs to a driving system of a new energy automobile.

Background

With the implementation of the national new energy automobile industry planning and the double-point policy, hybrid electric vehicles are more and more favored by people. The existing hybrid electric vehicles are divided into Series (SHEV), Parallel (PHEV) and hybrid type, and need to be newly developed, and the system is complex and high in cost.

Disclosure of Invention

The utility model provides a hybrid power driving device which can realize hybrid driving only by improving a small part.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a straight gear is arranged between a driven bevel gear in the rear axle and a driven bevel gear fixing disc, a driving motor is arranged on the other side of the rear axle corresponding to the transmission shaft, and a gear transmission mechanism is formed by a gear arranged on an output shaft of the motor and the straight gear. The gearbox is provided with a vehicle speed sensor and a power takeoff which drives the generator; the vehicle is provided with a gear sensor. The generator is electrically connected with the storage battery, the motor is electrically connected with the controller, the controller is electrically connected with the storage battery, the controller is electrically connected with the accelerator sensor, and the controller is electrically connected with the gear sensor. The controller limits the highest rotating speed of the motor in a grading mode according to gear signals of the gear sensor, and the highest rotating speed of the motor in each gear is in direct proportion to the transmission rotating speed of each gear of the gearbox. The speed sensor signal and the controller overload current signal are used for finely adjusting the rotation speed of the motor.

When the hybrid power running state works, a gear is engaged, an accelerator pedal is stepped down, the engine power is changed in speed through a gearbox, a transmission shaft and a driving bevel gear are driven to rotate, the driving bevel gear drives a driven bevel gear, a driven bevel gear fixing disc, a straight gear and a differential mechanism to rotate together, and the differential mechanism distributes power to a left transmission shaft and a right transmission shaft. The gear sensor and the accelerator sensor output signals to the controller, the controller drives the motor to work, and the driving force of the motor is transmitted to the half shaft through the output shaft, the straight gear, the driven bevel gear fixing disc and the differential mechanism to drive the vehicle.

The gear sensor outputs a gear signal to the controller according to the engaged gear, the controller limits the highest rotating speed of the motor according to the gear signal of the gear sensor and the signal of the accelerator sensor, and the highest rotating speed of each gear motor is in direct proportion to the gear transmission speed of the gearbox. A common 5-gear gearbox, a 1-gear transmission ratio of 2.9-3.27, an economic vehicle speed of 20km/h, a full acceleration signal of an accelerator sensor, a controller only controlling the motor to reach about 20% of the highest rotation speed, a 2-gear transmission ratio of 1.67-2.21, an economic vehicle speed of 25-40km/h, a full acceleration signal of an accelerator sensor, a controller only controlling the motor to reach about 40% of the highest rotation speed, a 3-gear transmission ratio of 1.32-1.59, an economic vehicle speed of 40-60km/h, a full acceleration signal of an accelerator sensor, a controller only controlling the motor to reach about 60% of the highest rotation speed, a 4-gear transmission ratio of 1-1.26, an economic vehicle speed of 60-75km/h, a full acceleration signal of an accelerator sensor, a controller only controlling the motor to reach about 80% of the highest rotation speed, a 5-gear transmission ratio of 0.68-0.96, and an economic vehicle speed of 75-110km/h, the throttle sensor is full acceleration signal, and the controller controls the motor to reach about 100% of the maximum rotation speed. The reverse gear transmission ratio is 3.16-3.8, the vehicle speed is 15-20km/h, and when the controller receives the gear sensor, the motor rotates reversely. The throttle sensor is full acceleration signal, and the controller can only control the motor to reach about 20% of the maximum rotation speed. By the control, the output rotating speed of the motor can be kept consistent with the output rotating speed of the gearbox in any gear, and the power output distribution of the motor and the power output distribution of the engine are relatively balanced.

And (4) finely adjusting the motor speed by using a vehicle speed sensor signal and a controller overload current signal for correction. When the motor speed is too high, the output shaft of the motor is provided with a gear which forms gear transmission with a straight gear, the straight gear is arranged between a driven bevel gear and a driven bevel gear fixing disc, and part of the driving force of the motor is transmitted to a half shaft to drive the vehicle through the straight gear, the driven bevel gear fixing disc and a differential mechanism; one part of the gear is connected to a gear box through a straight gear, a driven bevel gear, a driving bevel gear and a transmission shaft. When the gearbox is in low-speed transmission, the speed sensor outputs a low-speed signal, the rotating speed of the motor is too high, the motor load is too large, the motor current is overloaded, and the controller appropriately reduces the rotating speed of the motor according to the overload current. The output signal of the speed sensor is high, the load of the motor is small, when the current signal of the controller is small, the controller properly increases the rotating speed of the motor, so that the rotating speed of the motor is consistent with the rotating speed output by the gearbox, and the output power of the motor is kept in the optimal state.

When the storage battery is in power shortage or works under light load of an empty vehicle, the storage battery can be charged. When the power takeoff is required to be charged, one part of the power of the gearbox drives the generator to work through the power takeoff, and the electric energy generated when the generator works is transmitted to the storage battery through a line to charge the storage battery. One part drives a transmission shaft, a differential and a half shaft after being subjected to speed change through a gearbox, and drives a vehicle to run.

The utility model has the beneficial effects that: the auxiliary driving of the motor can not only compensate the deficiency of low-speed torque of the engine, but also keep the engine in the optimal working area with medium and low load, and reduce the oil consumption and the pollution emission of the engine.

Drawings

The utility model is further described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a hybrid drive device.

In the figure, 1, an engine, 2, a gearbox, 3, a transmission shaft, 4, a rear axle housing, 5, a driven bevel gear fixing disc, 6, a differential, 7, a half shaft, 8, an electric motor, 9, an accelerator sensor, 10, a controller, 11, a storage battery, 12, a gear sensor, 13, a motor driving shaft gear, 14, a spur gear, 15, a driven bevel gear, 16, a driving bevel gear, 17, a vehicle speed sensor, 18, a generator and 19 are arranged in sequence.

Detailed Description

In fig. 1, a spur gear 14 is arranged between a driven bevel gear 15 and a driven bevel gear fixing disc 5, a driving motor 8 is arranged on the other side of the rear axle housing 4 corresponding to the transmission shaft 3, and an output shaft of the motor 8 is provided with a gear 13 which forms a gear transmission mechanism with the spur gear 14. The gearbox 2 is provided with a vehicle speed sensor 17, and the vehicle is provided with a gear sensor 12. The motor 8 is electrically connected with a controller 10, the controller 10 is electrically connected with a storage battery 11, the controller 10 is electrically connected with an accelerator sensor 9, and the controller 10 is electrically connected with a gear sensor 12. The transmission shaft 3 is in transmission connection with a driving bevel gear 16, the driving bevel gear 16 is in meshing transmission connection with a driven bevel gear 16, and the half shaft 7 is in transmission connection with the differential mechanism 6.

When the hybrid power works, a gear is engaged, a gear sensor 17 outputs a gear signal to the controller 10, an accelerator pedal is stepped, and an accelerator sensor 9 outputs a signal to the controller 10. The power of an engine 1 is changed in speed through a gearbox 2, a transmission shaft 3 and a driving bevel gear 16 are driven to rotate, the driving bevel gear 16 drives a driven bevel gear 15, a driven bevel gear fixing disc 5, a straight gear 14 and a differential mechanism 6 to rotate together, and the differential mechanism 6 distributes the power to a left transmission shaft 7 and a right transmission shaft 7 to drive a vehicle to run. The controller 10 works to output the electric energy of the storage battery 11 to the motor 8, the motor 8 works, and the power of the motor 8 is output to the half shaft 7 through the motor driving gear 13, the straight gear 14, the driven bevel gear fixing disc 5 and the differential mechanism 6 to drive the vehicle to run.

The gear sensor 12 outputs a gear signal to the controller 10 according to the engaged gear, and the controller 10 limits the maximum rotating speed of the motor 8 according to the gear transmission speed ratio of the gearbox according to the signals of the gear sensor 12 and the accelerator sensor 9. When the gear 1 is in gear, the gear sensor 12 inputs a gear 1 signal to the controller 10, the accelerator sensor 9 fully accelerates the signal, and the controller 10 can only control the motor 8 to reach about 20% of the maximum rotation speed; in the 2-gear stage, the gear sensor 12 inputs a 2-gear signal to the controller 10, the accelerator sensor 9 fully accelerates a signal, the controller 10 can only control the motor 8 to reach about 40% of the maximum rotation speed, in the 3-gear stage, the gear sensor 12 inputs a 3-gear signal to the controller 10, the accelerator sensor 9 fully accelerates a signal, the controller 10 can only control the motor 8 to reach about 60% of the maximum rotation speed, in the 4-gear stage, the gear sensor 12 inputs a 4-gear signal to the controller 10, the accelerator sensor 9 fully accelerates a signal, the controller 10 can only control the motor 8 to reach about 80% of the maximum rotation speed, in the 5-gear stage, the gear sensor 12 inputs a 5-gear signal to the controller 10, the accelerator sensor 9 fully accelerates a signal, and the controller 10 controls the motor 8 to reach about 100% of the maximum rotation speed. When the reverse gear is performed, the gear sensor 12 inputs a reverse gear signal to the controller 10, the motor rotates reversely, the accelerator sensor 9 fully accelerates the signal, and the controller 10 can only control the motor 8 to reach about 20% of the maximum rotation speed. Therefore, the output rotating speed of the motor 8 is always consistent with the output rotating speed of the gearbox 2, and the power output distribution of the motor 8 and the power output distribution of the engine 1 are relatively balanced.

The controller 10 fine-tunes the rotational speed of the motor 8 based on the vehicle speed sensor signal 17 and the controller 10 overcurrent signal. The vehicle speed sensor 17 outputs a low speed signal, the rotating speed of the motor 8 is too high, and when the current of the motor 8 is overloaded, the controller 10 properly reduces the rotating speed of the motor 8. The output signal of the vehicle speed sensor 17 is high, when the current signal of the controller 10 is small, the load of the motor 8 is small, and the controller 10 properly increases the rotating speed of the motor 8.

When charging, the power takeoff 19 works, a part of kinetic energy of the generator 1 is transmitted to the power takeoff 19 through the gearbox 2, the power takeoff 19 drives the generator 18 to work, and electric energy generated by the work of the generator 18 is transmitted to the storage battery 11 through a circuit to be charged. The other part drives the vehicle to normally run through the transmission shaft 3.

Claims

1. A hybrid drive device is characterized in that: a straight gear is arranged between a driven bevel gear and a driven bevel gear fixing disc in the rear axle, a driving motor is arranged on the other side of the rear axle corresponding to the transmission shaft, and a gear transmission mechanism is formed by a gear and the straight gear which are arranged on an output shaft of the motor; the gearbox is provided with a power takeoff which drives the generator; the controller limits the highest rotating speed of the motor in a grading way according to a gear signal of the gear sensor, and the highest rotating speed of the motor in each gear is in direct proportion to the transmission rotating speed of each gear of the gearbox; the speed sensor signal and the controller overload current signal are used for finely adjusting the rotation speed of the motor.