CN102133855A - Main/auxiliary motor power coupling assembly for bilateral independent drive vehicles - Google Patents

Abstract

The invention provides a dual-power coupling drive assembly adopting the coupling drive mode of main and auxiliary motors, which can ensure the acceleration and steering performance of a vehicle driven independently on both sides. Since the structures on the left and right sides are exactly the same, choose the left side for detailed introduction. The present invention adopts a pair of fixed shaft gear torque coupling as the power coupling device of the main drive motor 4 and the auxiliary motor 11 . The main drive motor 4 and the auxiliary motor 11 are arranged on the same side, and the axes are arranged in parallel. The output power of the auxiliary motor 11 is passed through the auxiliary motor reducer 10, the auxiliary motor clutch 9, the auxiliary motor power input gear 8, and the output power of the main drive motor 4 is passed through the transmission The shaft 5 and the two motors realize torque coupling at the power coupling gear 6 .

Description

A main and auxiliary motor power coupling assembly of a double-sided independent drive vehicle

technical field

The invention belongs to the technical field of power assembly components, and in particular relates to a main and auxiliary motor power coupling assembly of a double-sided independently driven vehicle.

Background technique

Bilaterally independently driven vehicles mean that the motors on the left and right side of the vehicle respectively drive the left and right driving wheels to drive in a straight line, and the steering is realized by the speed difference generated by the left and right motors. The significant advantages of this drive scheme make it a promising application prospect for electric drive vehicles. The independent drive of the two-sided motors is not only flexible in overall layout, but also easy to implement the vehicle control strategy. At present, most vehicles independently driven by double-sided motors connect the drive motor directly to the side drive or add a gearbox between the drive motor and the side drive. Due to the existence of the box, the power loss of the drive motor in the gearbox is large, and there is a shift power interruption.

Contents of the invention

The purpose of the present invention is to provide a main and auxiliary motor power coupling assembly suitable for double-sided independent drive vehicles, so as to overcome the above-mentioned shortcomings in current double-side independent drive vehicles. On the one hand, the main drive motor can be effectively used to achieve high speed and low torque , and reduce the power loss in the transmission process. On the other hand, the power coupling between the main drive motor and the auxiliary motor is realized, so as to achieve low speed and high torque. In addition, the transmission path of the braking torque is shortened, which is conducive to improving the regeneration system Kinetic energy recovery efficiency. The independent drive of the main and auxiliary motors on one side means that each driving wheel of the vehicle is jointly driven by a main drive motor and an auxiliary drive motor. Overload, multiple motors can coordinate and work independently. It provides a new technical way to solve the large-scale non-power interruption torque change, stepless speed change, stepless steering and high reliability of the transmission system.

The purpose of the present invention is achieved like this:

The main drive motor 4 and the auxiliary motor 11 are arranged on the same side, and the axes are arranged in parallel. The output power of the auxiliary motor 11 is passed through the auxiliary motor reducer 10, the auxiliary motor clutch 9, the auxiliary motor power input gear 8, and the output power of the main drive motor 4 is passed through the transmission Shaft 5, torque coupling is realized at power coupling gear 6. This structure can effectively realize the requirements of multiple working modes of the two-sided independently driven vehicle.

Description of drawings

The accompanying drawing is a structural diagram of the power coupling assembly of the main and auxiliary motors of the double-sided independently driven vehicle.

In the figure: 1. Energy storage device, 2. Auxiliary motor controller, 3. Main drive motor controller, 4. Main drive motor, 5. Transmission shaft, 6. Power coupling gear, 7. Left drive wheel, 8. Auxiliary Motor power input gear, 9. Auxiliary motor clutch, 10. Auxiliary motor reducer, 11. Auxiliary motor

Detailed ways

Now further illustrate in conjunction with accompanying drawing.

The present invention is composed of energy storage device 1, auxiliary motor controller 2, main drive motor controller 3, main drive motor 4, transmission shaft 5, power coupling gear 6, left drive wheel 7, auxiliary motor power input gear 8, auxiliary motor Composed of clutch 9, auxiliary motor reducer 10, and auxiliary motor 11, it is characterized in that: the main drive motor 4 and auxiliary motor 11 are arranged on the same side, and the axes are arranged in parallel, and the output power of auxiliary motor 11 passes through auxiliary motor reducer 10, auxiliary motor Clutch 9, auxiliary motor power input gear 8, main drive motor 4 output power through transmission shaft 5, realize torque coupling at power coupling gear 6 places.

The main drive motor controller 3 controls the working state and power output of the main driving motor 4, and the auxiliary motor controller 2 controls the working state and power output of the auxiliary motor 11. The on and off of the power output of the auxiliary motor 11 is specifically controlled by the auxiliary motor clutch 9 accomplish.

By controlling the auxiliary motor clutch 9, multiple working modes of the main and auxiliary motors of the vehicle independently driven by both sides can be obtained. The combined state is shown in Table 1, where √ indicates that the clutch is engaged, X indicates that the clutch is disengaged, "M" indicates that the motor is under electric control, "G" indicates that the motor is under power generation control, "C" indicates that the motor is off, and "N ” means the motor rotates freely.

Table 1 Working Mode

It works as follows:

Main drive motor driving mode: the energy storage device 1 outputs energy, the main drive motor controller 3 controls the main drive motor 4 to work in the electric mode according to the driver's command, the output power of the main drive motor is output to the drive wheel 7 through the transmission shaft 5, and drives When the vehicle is running, the auxiliary motor clutch 9 is disconnected, and the auxiliary motor 11 is in a stopped state.

Auxiliary motor driving mode: the auxiliary motor clutch 9 is engaged, the energy storage device 1 outputs energy, the auxiliary motor controller 2 controls the auxiliary motor 11 to work in the electric mode according to the driver's command, and the output power of the auxiliary motor passes through the auxiliary motor reducer 10, the auxiliary motor Clutch 9, auxiliary motor power input gear 8, power coupling gear 6, transmission shaft 5 output to drive wheel 7, drive vehicle to travel, at this moment, main drive motor is in free rotation state.

Main drive motor and auxiliary motor coupled driving mode: energy storage device 1 outputs energy, main drive motor controller 3 and auxiliary motor controller 2 control the main drive motor 4 and auxiliary motor 11 to work in electric mode according to the driver's instructions, and the auxiliary motor The clutch 9 is engaged, and the main drive motor 4 outputs power to the transmission shaft 5. At the same time, the auxiliary motor 11 outputs power through the auxiliary motor reducer 10, the auxiliary motor clutch 9, and the auxiliary motor power input gear 8, and the two motors are realized at the power coupling gear 6. Torque coupling, the coupled power is output to the drive wheel 7 through the transmission shaft 5 to drive the vehicle.

Main drive motor drive and auxiliary motor power generation working mode: energy storage device 1 outputs energy, main drive motor controller 3 controls the main drive motor 4 to work in electric mode according to the driver's command, and part of the power output by the main drive motor is output through the transmission shaft 5 At this time, the auxiliary motor clutch 9 is engaged, the auxiliary motor controller 2 controls the auxiliary motor 11 to work in the power generation mode, and another part of the power output by the main driving motor passes through the coupling gear 6 and the auxiliary motor power input gear. 8. The auxiliary motor clutch 9 and the auxiliary motor reducer 10 drive the auxiliary motor 11 to rotate. The auxiliary motor controller 2 controls the power generation of the auxiliary motor 11 according to the vehicle control logic, and outputs direct current to charge the energy storage device 1 .

Regenerative braking main drive motor energy recovery working mode: the auxiliary motor 11 stops, the auxiliary motor clutch 9 is disconnected, the main drive motor 4 works in the power generation mode, and the vehicle inertia torque drives the main drive motor 4 through the drive wheel 7 and the transmission shaft 5 Rotate, the main drive motor controller 3 controls the power generation of the main drive motor according to the vehicle regenerative braking control logic, and outputs direct current to charge the energy storage device 1 .

Regenerative braking auxiliary motor energy recovery working mode: the auxiliary motor clutch 9 is engaged, the auxiliary motor 11 works in the power generation mode, the vehicle inertia torque is passed through the driving wheel 7, the transmission shaft 5, the power coupling gear 6, the auxiliary motor power input gear 8, the auxiliary motor The motor clutch 9 and the auxiliary motor reducer 10 drive the auxiliary motor 11 to rotate. The auxiliary motor controller 2 controls the power generation of the auxiliary motor 11 according to the regenerative braking control logic of the vehicle, and outputs direct current to charge the energy storage device 1. At this time , the main drive motor is in a free-rotating state.

Regenerative braking main and auxiliary motor energy recovery working mode: the auxiliary motor clutch 9 is engaged, the main drive motor 4 and the auxiliary motor 11 are both working in the power generation mode, and the vehicle inertia torque drives the main drive motor to rotate through the drive wheel 7 and the transmission shaft 5 , the main drive motor controller 3 controls the power generation of the main drive motor according to the regenerative braking control logic of the whole vehicle, and outputs direct current to charge the energy storage device. , auxiliary motor power input gear 8, auxiliary motor clutch 9, auxiliary motor reducer 10, drag the auxiliary motor 11 to rotate, the auxiliary motor controller 2 controls the power generation of the auxiliary motor 11 according to the regenerative braking control logic of the vehicle, and outputs direct current Charge the energy storage device 1 .

The auxiliary motor speed reducer 10 can be a speed reducer with a fixed transmission ratio, or a speed changer, which has multiple shifting stages, and outputs the power output from the auxiliary motor 11 to the power input gear 8 of the auxiliary motor. The stage has at least a speed-up shift stage and a speed-reduction shift stage. The auxiliary motor clutch 9 can also be a synchronizer on the power input gear of the auxiliary motor to realize the power on and off of the auxiliary motor 11 . The gear ratios of the power coupling gear 6 and the auxiliary motor power input gear 8 can be 1 or other values.

It can be seen from the above working principle that the main and auxiliary motor power coupling assembly of the double-sided independent drive vehicle can realize the main drive motor drive, auxiliary motor drive, main and auxiliary motor coupling drive, main drive motor drive and auxiliary motor power generation, regenerative braking Main drive motor energy recovery, regenerative braking auxiliary motor energy recovery, the working mode of regenerative braking main and auxiliary motor energy recovery can meet the needs of double-sided independent drive vehicles with low-speed high torque and high-speed small torque, and realize the main drive motor and drive. The direct transmission of the wheel has high transmission efficiency and reliability. In addition, the transmission path of the braking torque is shortened, which is conducive to improving the efficiency of regenerative braking energy recovery.

Claims (10)

1. the major-minor motor power coupling device of bilateral individual drive vehicle, by closed-center system 1, helper motor controller 2, main drive motor controller 3, main drive motor 4, transmission shaft 5, power coupling wheel 6, left driving wheel 7, helper motor power input gear 8, helper motor power-transfer clutch 9, helper motor retarder 10, helper motor 11 is formed, it is characterized in that: main drive motor 4 and helper motor 11 are arranged in homonymy, and axle is arranged in parallel, helper motor 11 outputting powers are through helper motor retarder 10, helper motor power-transfer clutch 9, helper motor power input gear 8, main drive motor 4 outputting powers are realized torque coupling through transmission shaft 5, two motors at power coupling wheel 6 places.

2. according to the major-minor motor power coupling assembly of the described bilateral individual drive of claim 1 vehicle; it is characterized in that: drive under the mode of operation at main drive motor; closed-center system 1 energy output; main drive motor controller 3 works in electric model according to driver command control main drive motor 4; the main drive motor outputting power outputs to left driving wheel 7 through transmission shaft 5, and powered vehicle is travelled, at this moment; helper motor power-transfer clutch 9 disconnects, and helper motor 11 is in stopped status.

3. according to the major-minor motor power coupling assembly of the described bilateral individual drive of claim 1 vehicle, it is characterized in that: drive under the mode of operation at helper motor, helper motor power-transfer clutch 9 engages, closed-center system 1 energy output, helper motor controller 2 works in electric model according to driver command control helper motor 11, the helper motor outputting power is through helper motor retarder 10, helper motor power-transfer clutch 9, helper motor power input gear 8, power coupling wheel 6, transmission shaft 5 outputs to drive wheel 7, powered vehicle is travelled, at this moment, main drive motor is in free rotation state.

4. according to the major-minor motor power coupling assembly of the described bilateral individual drive of claim 1 vehicle, it is characterized in that: under main drive motor and helper motor couple drive mode of operation, closed-center system 1 energy output, main drive motor controller 3 and helper motor controller 2 work in electric model according to driver command control main drive motor 4 and helper motor 11, helper motor power-transfer clutch 9 engages, main drive motor 4 outputting powers are given transmission shaft 5, simultaneously, helper motor 11 outputting powers are through helper motor retarder 10, helper motor power-transfer clutch 9, helper motor power input gear 8, two motors are realized torque coupling at power coupling wheel 6 places, power after the coupling outputs to drive wheel 7 through transmission shaft 5, and powered vehicle is travelled.

5. according to the major-minor motor power coupling assembly of the described bilateral individual drive of claim 1 vehicle, it is characterized in that: under main drive motor driving and helper motor generating mode of operation, closed-center system 1 energy output, main drive motor controller 3 works in electric model according to driver command control main drive motor 4, a part of power of main drive motor output outputs to drive wheel 7 through transmission shaft 5, powered vehicle is travelled, at this moment, helper motor power-transfer clutch 9 engages, helper motor controller 2 control helper motors 11 work in power generation mode, another part power of main drive motor output is through coupling wheel 6, helper motor power input gear 8, helper motor power-transfer clutch 9, helper motor retarder 10, drag helper motor 11 rotations, helper motor controller 2 is according to the electric energy generated of car load control logic control helper motor 11, and output DC is closed-center system 1 charging.

6. according to the major-minor motor power coupling assembly of the described bilateral individual drive of claim 1 vehicle; it is characterized in that: under regenerative brake main drive motor energy recovery mode of operation; helper motor 11 is shut down; helper motor power-transfer clutch 9 disconnects; main drive motor 4 works in power generation mode; the vehicle inertia torque drags main drive motor 4 rotations through drive wheel 7, transmission shaft 5; main drive motor controller 3 is according to the electric energy generated of car load regenerative brake control logic control main drive motor, and output DC is closed-center system 1 charging.

7. according to the major-minor motor power coupling assembly of the described bilateral individual drive of claim 1 vehicle, it is characterized in that: under regenerative brake helper motor energy recovery mode of operation, helper motor power-transfer clutch 9 engages, helper motor 11 works in power generation mode, the vehicle inertia torque is through drive wheel 7, transmission shaft 5, power coupling wheel 6, helper motor power input gear 8, helper motor power-transfer clutch 9, helper motor retarder 10, drag helper motor 11 rotations, helper motor controller 2 is according to the electric energy generated of car load regenerative brake control logic control helper motor 11, and output DC is closed-center system 1 charging, at this moment, main drive motor is in free rotation state.

8. according to the major-minor motor power coupling assembly of the described bilateral individual drive of claim 1 vehicle, it is characterized in that: under the major-minor motor associating of regenerative brake energy recovery mode of operation, helper motor power-transfer clutch 9 engages, main drive motor 4 and helper motor 11 all work in power generation mode, the vehicle inertia torque is through drive wheel 7, transmission shaft 5, drag the main drive motor rotation, the main drive motor controller is according to car load regenerative brake control logic control main drive motor electric energy generated, and output DC is the closed-center system charging, the vehicle inertia torque is through drive wheel 7 simultaneously, transmission shaft 5, power coupling wheel 6, helper motor power input gear 8, helper motor power-transfer clutch 9, helper motor retarder 10, drag helper motor 11 rotations, helper motor controller 2 is according to the electric energy generated of car load regenerative brake control logic control helper motor 11, and output DC is closed-center system 1 charging.

9. according to the major-minor motor power coupling assembly of the described bilateral individual drive of claim 1 vehicle, it is characterized in that: helper motor power-transfer clutch 9 also can adopt the synchro on the helper motor power input gear, realizes the switching of helper motor 11 power.

10. according to the major-minor motor power coupling assembly of the described bilateral individual drive of claim 1 vehicle, it is characterized in that: the power coupling of major-minor motor can adopt fixed axis gear, also can adopt and the intimate alternate manner of fixed axis gear drive connection, as strap drive, chain-driving etc.

Images