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Timing sequence power supply type wheel hub electric device and driving and braking method thereof

An electric device and sequential current technology, which is applied in the direction of motor control, electric motor/converter plug, electrical components, etc., can solve the problems of low cost performance, increased wheel hub weight, low weight/volume ratio power, etc., and improve the use efficiency , reduce the accumulated heat when energized, reduce the effect of energized heat accumulated

Inactive Publication Date: 2016-06-01
刘粤荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this waterwheel model was translated to the field of electric vehicles, it did not achieve the expected development success
For example, an electric bicycle with teeth on the outer edge of the rim and an output shaft toothed motor installed on the market transmits the shaft output power of the motor through the gears. Although this type of design is innovative, due to the use of traditionally designed motors and conventional Power supply, its electric energy conversion efficiency is similar to that of the hub motor, and setting the motor on the outer edge of the rim will be limited by power
[0006] For the high-power wheel-hub motors used in electric four-wheel vehicles, the current mainstream idea in the market is to install the motor inside the wheel hub. Because the weight / volume ratio of conventional motors is low, the weight of the wheel hub increases greatly, and the practical power consumption index is not high. Low, and the cost performance is not high, and there are fewer types of products in the market

Method used

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  • Timing sequence power supply type wheel hub electric device and driving and braking method thereof
  • Timing sequence power supply type wheel hub electric device and driving and braking method thereof
  • Timing sequence power supply type wheel hub electric device and driving and braking method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] A hub electric device for an electric two-wheeled vehicle with a front and rear wheel structure, which is selected as Figure 1c Shown vehicle frame 4, the circumference of wheel 5 is 1000mm, and battery pack 8 selects lithium iron phosphate battery to be installed in the inside of vehicle frame; Hub electric device is located at the rear wheel of car. The coaxial rotating body 3e of the electric device 3 is a ring-shaped titanium-aluminum alloy ring with a rotating shaft and a circumference of 300mm. The outer edge of the alloy ring is fixedly connected with a rotor unit 3b, and the mechanical device that is fixedly connected with the fixed shaft inside the alloy ring Install a stator unit 3a; the coaxial rotating body 3e is coaxially installed with the hub 6, and a deceleration / torque conversion device 2 composed of several gears is arranged in between, and the deceleration / torque conversion device 2 realizes the connection with the hub 6 Mechanical transmission, the ...

Embodiment 2

[0104] Change the sequential current of the power supply modulator in Embodiment 1 to: T 1 The power-on time domain is set to a constant current corresponding to two periods of time and intensity, and the characteristic is the current I in the last 1 / 3 time 2 / A is the current intensity I in the first 2 / 3 time 1 / A half; the working logic of the power modulator is adjusted as follows: when the winding of the stator unit starts to be energized, the power modulator within 5s with I 1 Intensity 12A (corresponding to I 2 6A) as the reference, corresponding to the current sequence of the rotation cycle of the coaxial body, which automatically increases the output intensity by 1% every next cycle, and the relative ratio of the two power-on time domains is 2:1; wait for the drive control device from the 6th second Next step work instruction: if the drive control device 9a has no input command, the power modulator sleeps; if the command given by the drive control device is to accele...

Embodiment 3

[0107] On the basis of Embodiment 2, the power-on program of the power supply modulator is optimized: the T 1 The power-on time domain is set to 5 stages of current with the same power-on time but the current intensity decreases regularly, and the power-on intensity of the 5 stages is according to K*I 1 The linear relationship of / A decreases step by step, and the decrease coefficient K is 0.73, that is, when the initial current intensity of the 5-stage energization time is 12.0A, T 1 The current intensity within the sequence automatically decreases in the order of 12.0A, 8.8A, 6.4A, 4.7A, and 3.4A. The design of power-on program logic using conventional electronic circuits to achieve control is more complicated, and the manufacturing cost is also higher. The power modulator is replaced by mature pulse digital technology. .

[0108] The core module of the power modulator includes a conventional CPU and a drive module with a design power of 500W, and its detailed working logi...

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Abstract

The invention discloses a timing sequence power supply type wheel hub electric device, including a power supply modulator (1), a speed reducing / torque changing device (2), a wheel hub (6), a drive control device (9a) and at least one set of electric device (3). Each electric device includes a coaxial rotating body (3e), at least one stator unit (3a) and a plurality of rotor units (3b); the coaxial rotating body is an annular mechanical ring having a rotating shaft; the plurality of rotor units include at least one permanent magnet rotor unit (3b1) and at least one magnetizer rotor unit (3b2) which are arranged on the coaxial rotating body alternately; the stator units are installed inside or outside the coaxial rotating body; and the coaxial rotating body and the wheel hub are coaxially arranged, and realizes mechanical transmission with the wheel hub through the speed reducing / torque changing device; and a timing sequence current output end (1b) of the power supply modulator is connected with internal windings of the stator units, and a drive signal input end (1b) is connected with the drive control device.

Description

technical field [0001] The invention relates to the field of power supply power design of an electric vehicle, in particular to a structure and a driving and braking method of an electric device, including a power supply modulation method of periodic on-off current and sequence power supply amplitude conversion. Background technique [0002] my country's electric vehicle market is dominated by two-wheeled vehicles, and the number of electric two-wheeled vehicles in my country has reached more than 150 million. In addition to two-wheeled vehicles, electric tricycles have also emerged rapidly in recent years. According to industry information, the number of electric three-wheeled vehicles exceeded 10 million in 2013. , The low-speed electric four-wheel vehicle market for regional use has also achieved considerable development. [0003] At present, in the electric vehicle market, the motors used are developing from general-purpose to professional design. The power controller als...

Claims

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Application Information

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IPC IPC(8): H02P29/00H02P3/06
Inventor 刘粤荣
Owner 刘粤荣
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