CN208180752U

CN208180752U - Electric car and power-driven power system

Info

Publication number: CN208180752U
Application number: CN201820736377.7U
Authority: CN
Inventors: 何国保
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-17
Filing date: 2018-05-17
Publication date: 2018-12-04
Anticipated expiration: 2028-05-17

Abstract

The utility model relates to electric car and power-driven power systems.It is to be independently supplied power in rated condition by the second electric motor operation when the electric car smooth-ride of the utility model, in rated condition, not only energy saving, properties are also at optimum state to the second electric motor operation.And in vehicle starting or accelerator, the power of the first motor is accessed into power output shaft by clutch, first electronic function provides biggish breakaway torque, the setting of first deceleration device can further decrease the revolving speed of power output shaft, increase breakaway torque, shorten starting or acceleration time.So the electric car of the utility model has the advantages that low energy consumption, starting is fast simultaneously, it is able to satisfy the traveling demand of insufficient operating condition.

Description

Electric car and power-driven power system

Technical field

The utility model relates to electric car and power-driven power systems.

Background technique

Electric car is travelled using vehicle power supply as power with wheel driving motor.Work in the electric car course of work It is as follows to make demand: first is that motor is needed to provide big torque to shorten start-up time when vehicle starting；Second is that automobile balance travels When need motor to provide high revolving speed to meet speed demand.But in the design process of motor the nominal torque of motor with Rated speed is a pair of parameter contradicted, and high rated speed means that big nominal torque, big nominal torque then mean low volume Determine revolving speed.If will affect the service life and charge and discharge of power battery by changing supply current frequently to adapt to different operating conditions Electrical efficiency.So needing to rationally design power-driven power system to meet the work requirements of electric car.

Utility model content

The purpose of this utility model is to provide it is a kind of can be realized fast starting, that low energy consumption runs at high speed is electric-powered System；The purpose of this utility model, which also resides in, provides a kind of electric car using above-mentioned power-driven power system.

To achieve the above object, the power-driven power system of the utility model uses following technical scheme:

Power-driven power system, including the first motor, the first deceleration device, the second motor and power output shaft, first Motor is connected on the first active wheel of the first deceleration device, and the second active wheel of the first deceleration device is connected to power output On axis, the clutch for controlling the incision of the first motor power or cutting out is provided between the first motor and power output shaft Device, the rated speed of the first motor are lower than the rated speed of the second motor.

Being equipped on power output shaft can be with the flywheel accumulator of power output shaft synchronous rotary.

First motor is permanent magnet motor.

Second deceleration device is installed, the output end of the second deceleration device is connected with for realizing gear shift on power output shaft Speed change gear.

It is provided with the torque sensor for detecting running resistance on power output shaft and turns for detecting power output shaft The speed probe of speed, speed probe and torque sensor are installed between the second motor and flywheel accumulator, electronic Dynamical system includes the motor controller for controlling the first motor and the second motor speed, motor controller and torsion Square sensor and the equal electric signal connection of speed probe.

The electric car of the utility model uses following technical scheme:

Electric car, including power-driven power system, power-driven power system include the first motor, the first deceleration device, the Two motor and power output shaft, the first motor are connected on the first active wheel of the first deceleration device, the first deceleration device The second active wheel be connected on power output shaft, be provided between the first motor and power output shaft for control first electricity The clutch that motivation power is cut or cut out, the rated speed of the first motor are lower than the rated speed of the second motor.

First motor is permanent magnet motor.

The beneficial effects of the utility model are as follows: being by the second motor when the electric car smooth-ride of the utility model Work is independently supplied power in rated condition, the second electric motor operation not only energy saving, properties in rated condition In optimum state.And in vehicle starting or accelerator, the power of the first motor is accessed by power by clutch Output shaft, the first electronic function provide biggish breakaway torque, and the setting of the first deceleration device can further decrease power output The revolving speed of axis increases breakaway torque, shortens starting or acceleration time.So the electric car of the utility model has energy consumption simultaneously Advantage low, starting is fast, is able to satisfy the traveling demand of different operating conditions.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of one embodiment of the power-driven power system of the utility model.

In figure, 1 motor shock bracket, 2 first motor, 3 first deceleration devices, 4 first the second works of deceleration device It takes turns, 5 torque sensors, 6 second motor, 7 speed probes, 8 flywheel accumulators, 9 second deceleration devices, 10 is dynamic Power output shaft, 11 speed change gears, 12 differential mechanisms, 13 universal joints.

Specific embodiment

The embodiment of the electric car of the utility model:

The electric car of the utility model includes vehicle body, tire and the power-driven power system for tire on the drive wheels movement, electricity Dynamic dynamical system include motor controller, the first motor 2, the first deceleration device 3, the second motor 6, flywheel accumulator 8, Second deceleration device 9, power output shaft 10, speed change gear 11 and differential mechanism 12.Motor controller is electronic for controlling first The working condition of machine 2 and the second motor 6, the rated speed of the first motor 2 are lower than the rated speed of the second motor 6, electricity The power of dynamic dynamical system passes to universal joint 13 through differential mechanism 12, then passes to tire through universal joint 13 and turned with tire on the drive wheels It is dynamic.In the utility model, the first motor 2 be arranged in motor shock bracket 1 in case the first motor 2 by vehicle body shake shadow It rings.

First deceleration device 3 is deceleration device, either CVT, fluid torque-converter, can also be the belt of fixed speed ratio Other deceleration devices such as wheel, sprocket wheel, the second active wheel 4 are connected on power output shaft 10 by clutch, control clutch On off operating mode can be realized the first motor 2 power incision or cut out.The input of flywheel accumulator 8, the second deceleration device 9 The wheel for inputting of wheel and speed change gear 11 is installed on power output shaft 10.It is also equipped on power output shaft 10 dynamic for detecting The speed probe 7 of 10 revolving speed of power output shaft and torque sensor 5 for detecting running resistance signal, 7 He of speed probe Torque sensor 5 is mounted between the second motor 6 and flywheel accumulator 8.Motor controller and torque sensor 5 and revolving speed The connection of the equal electric signal of sensor 7.In other embodiments, the first motor 2 can also be arranged in clutch and the first deceleration fills It sets between 3 the first active wheel.

When first motor, 2 power is cut out, power transmission line flies for the second motor 6 --- power output shaft 10 --- Take turns accumulator 8 and the second deceleration device 9.

When the first motor 2 works independently, power transmission line is the first motor 2 --- the first deceleration device 3 --- power output shaft 10 --- flywheel accumulators 8 and the second deceleration device.

When the first motor 2 works independently, the second motor 6 does not work, the output power of the first motor 2 passes through the One deceleration device 3 connects the flywheel accumulator 8 on power output shaft 10, then drives speed change gear 11 and wheel.

First motor 2 is permanent magnet motor, since rotor can be with stator rotary magnetic in the permanent magnet motor course of work The problem of field synchronization rotation, power consumption asynchronous with stator rotating excitation field there is no rotor, so higher number of pole-pairs can be designed.Due to F is frequency of supply in Rated motor revolving speed n=60*f/p(formula, and p is motor number of pole-pairs), so the rated speed of permanent magnet motor It can design lower.It is again motor rated power by P in motor output torque T=9.55P/n(formula, n is Rated motor revolving speed) It is found that Rated motor revolving speed is lower, and motor output torque is bigger in the identical situation of motor rated power.Slow down through first The revolving speed of 3 reduction of speed rear power output shaft 10 of device can be lower than the revolving speed of the first motor 2, and it is defeated that flywheel accumulator 8 is mounted on power Its revolving speed can be reduced with power output shaft 10 on shaft 10.Ignore under energy consumption, is transmitted to the power etc. of power output shaft In the power of the first motor 2, in the case where power is constant, the torque on power output shaft 10 can be further increased, can be into One step increases starting torque, shortens electric car start-up time, reduces starting energy consumption.

The rated speed of second motor 6 is able to satisfy the demand of galloping, so making when driving in automobile balance Second motor 6 works under rated condition, not only energy saving, each when work of the second motor 6 is under rated condition Item performance is also at optimum state.

The setting of second deceleration device 9 can reduce the revolving speed of input gear in speed change gear 11, to meet automotive wheel Speed demand.The setting of speed change gear 11 is so that the electric car of the utility model is provided with gear shift function.

Generally comprise in the working condition of electric car: fast state, lower-speed state, parked state, climbing started to walk Journey, brake process.

In climbing or starting-up process, power is independently supplied by the first motor 2, makes electric car fast starting；Low speed row It sails under state, is still supplied power by the first motor 2, the power that is such as hampered exceeds 2 power output range of the first motor, by torque Sensor 5 provides signal to the controller of the second motor 6, and the rotation of the second motor 6 provides power, and superposition output meets need It asks；When running at high speed, tractive force needed for electric car can reduce, disconnect at this time the first deceleration device 3 and power output shaft 10 it Between power transmitting, the normal use demand of electric car can be met by starting the second motor 6；When brake, Motor Control Device can also control the first motor 2 and switch to generating state；The setting of flywheel accumulator 8 is so that in of short duration docking process, and One motor 2 can keep idle energy storage state, to provide power for fast starting.

Process is it is found that the first motor 2 is used cooperatively with the second motor 6 in the utility model, not from the above analysis Different combining forms is used under same operating condition, under the premise of maintaining low energy consumption, solves electric car starting, accelerator In the problem of being short of power, so that the utility model is met the power demand under different operating conditions.

Claims

1. power-driven power system, it is characterised in that: defeated including the first motor, the first deceleration device, the second motor and power Shaft, the first motor are connected on the first active wheel of the first deceleration device, the second active wheel connection of the first deceleration device On power output shaft, it is provided between the first motor and power output shaft for controlling the incision of the first motor power or cutting Clutch out, the rated speed of the first motor are lower than the rated speed of the second motor.

2. power-driven power system according to claim 1, it is characterised in that: being equipped on power output shaft can be defeated with power The flywheel accumulator of shaft synchronous rotary.

3. power-driven power system according to claim 1, it is characterised in that: first motor is permanent magnet motor.

4. power-driven power system according to claim 1, it is characterised in that: be equipped with the second deceleration dress on power output shaft It sets, the speed change gear that the output end of the second deceleration device is connected with for realizing gear shift.

5. power-driven power system according to any one of claim 1 to 4, it is characterised in that: be arranged on power output shaft There are the torque sensor for detecting running resistance and the speed probe for detecting power output shaft speed, speed probe It is installed between the second motor and flywheel accumulator with torque sensor, power-driven power system includes for controlling the first electricity The motor controller of motivation and the second motor speed, motor controller and torque sensor and the equal telecommunications of speed probe Number connection.

6. electric car, it is characterised in that: including power-driven power system described in any one of claims 1 to 5.