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Power system for electric car, and driving, braking and electric energy supplement method for power system

A power system and electric vehicle technology, applied in electric vehicles, vehicle energy storage, electric traction, etc., can solve the problems of limited electric motors and other control methods, and achieve the advantages of short continuation mileage, simple structure, and reduction of power-on heat accumulation. Effect

Inactive Publication Date: 2016-07-27
NANJING MENGQI INTELLIGENT TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PWQ technology is generally used in control. The main problem of this kind of permanent magnet brushless DC motor is the approximation control of sine wave deformation. Although its power supply is modulated by PWQ technology, the control method is limited by the internal rotating magnetic field of the motor. traditional design of

Method used

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  • Power system for electric car, and driving, braking and electric energy supplement method for power system
  • Power system for electric car, and driving, braking and electric energy supplement method for power system
  • Power system for electric car, and driving, braking and electric energy supplement method for power system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] A power system of a power-assisted electric tricycle, comprising an electric device 13, a battery pack 8 and a range-extending system 16; the electric device is arranged in the hub of the front wheel, and its partial structure and supporting frame 4 are Figure 2d As shown; the battery pack 8 of the electric vehicle selects a lead-acid colloid battery with a nominal 48V38Ah, and is installed inside the vehicle frame; the range-extending system uses a methanol generator system as an electric energy supplementary device 18, and the generator system consists of a methanol fuel tank, methanol The internal combustion engine, generator and rectifier are combined; the logic charging device 17 of the range-extending system is mainly composed of functional modules such as a battery pack real-time voltage monitoring module, a constant voltage limited current charging module, and a working logic control module. It is connected with a power supply device, and its output terminal 17b...

Embodiment 2

[0107] The power supply device of the range-extending system in Example 1 is changed from a methanol generator system to an aluminum-air primary battery, and the power modulator is realized by using pulse digital technology: the core module of the power modulator 1 includes a conventional CPU and a drive module with a design power of 500W. Its detailed working logic is as follows Figure 5b As shown, the pulse conversion conditioning circuit is mainly to complete the conversion of the pulse signal into a ladder wave signal, the pulse signal generator mainly generates the required pulse signal, and secondly outputs the peak pulse through the differential circuit, and then passes through the limiting circuit to convert the negative of the peak pulse The half-cycle is filtered out, and the positive half-axis peak pulse is left. The integral circuit composed of an integrated operational amplifier is used for integral accumulation, and a voltage comparator and a control circuit are ...

Embodiment 3

[0112] Using T on the basis of Example 2 2 Time-domain electrification adds an electromagnetic force braking function to the electric device.

[0113] The power supply modulator correspondingly adds a braking signal input terminal 1e to electrically connect the electromagnetic braking device 9b, such as Figure 5c As shown, the electromagnetic braking device is a ten-stage rheostat; when the manual control electromagnetic braking device sends a braking signal, the power modulator cuts off T 1 corresponding to the timing current, start T 2 The time domain is energized, and the time domain of power-on braking is set when the sensing unit 3c senses the rotor unit 3b around the shaft to for arrive is the time period for the 0 degree position.

[0114] The brake current output by the power modulator corresponds to the ten-level resistance of the electromagnetic braking device 9b, which is set to ten-level intensity. The set output current intensity is: the first level is 5A...

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Abstract

The invention discloses a power system for an electric car, and the system comprises an electric device, a battery pack, and a range increasing system. The electric device comprises a power modulator, a speed reduction / torque changing device, a drive operating device, a fixed body, and a rotating body. The rotating body is an annular mechanical ring with a rotating shaft, wherein the rotating body is provided with a plurality of rotor units made of magnetic conduction dielectric materials at intervals. The fixed body is a mechanical disc with a fixed shaft, and the interior of the fixed body is at least provided with one stator unit which is installed at a position close to the rotating body. The fixed boy and the rotating body are arranged coaxially, and an air gap between the fixed body and the rotating body is not greater than 45mm. The speed reduction / torque changing device is coaxial with the rotating body, and is disposed outside the rotating body. The power modulator obtains a user instruction through the drive operating device / an electromagnetic braking device, correspondingly outputs a time sequence current, and achieves the driving / braking of the electric device. The range increasing system of the power system supplements power for the battery pack.

Description

technical field [0001] The invention relates to the field of power design of electric vehicles, in particular to a power supply modulator generating sequential currents, a driving and braking method of an electric device driven by it, and a range-extending design method of a matching electric vehicle. Background technique [0002] The current mainstream of the electric bicycle market is to use an electric motor installed on the wheel shaft. The electric motor is designed as an external rotor. The external rotor is mechanically connected to the rim of the wheel through the spokes, and the wheel is rotated by the torque of the electric motor. In specific manufacturing, the mainstream of the market is to integrate the spokes and the rim of the wheel. The appearance is an electric wheel, and the spokes are transformed into force-transmitting ribs, and the torque of the motor is transmitted to the rim through the force-transmitting ribs. The domestic motor industry is also trying...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/00H02K1/27H02P6/16B60L11/18
CPCY02T10/64Y02T10/70
Inventor 刘粤荣姚飞
Owner NANJING MENGQI INTELLIGENT TECH
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