Brushless motor controller energy feedback for electric bicycle and deceleration method thereof

A technology of electric bicycles and brushless motors, applied in the direction of stopping devices, etc., can solve problems such as loss, storage, and lack of energy feedback functions, and achieve the effects of improving driving range indicators, extending service life, and improving reliability

Inactive Publication Date: 2005-09-07
上海谙乃达实业有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the existing electric bicycle brakes and brakes, the brushless motor controller for driving does not generate braking torque, and the electric bicycle completely relies on the mechanical braking device to achieve braking, which will seriously affect the service life of the mechanical braking device; on the other hand , the existing electric bicycles do not have the function of energy feedback, the mechanical energy before the bicycle braking can only be converted into heat energy through the friction between the mechanical brake device and the wheel, and can not be converted into electric energy and stored in the battery to improve the continuous driving of the vehicle after one charge mileage indicator

Method used

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  • Brushless motor controller energy feedback for electric bicycle and deceleration method thereof
  • Brushless motor controller energy feedback for electric bicycle and deceleration method thereof
  • Brushless motor controller energy feedback for electric bicycle and deceleration method thereof

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Embodiment Construction

[0027] Please refer to the attached figure 1 As shown, the functional block diagram of the existing brushless motor controller for electric bicycles, the Hall sensor signal and the current feedback signal are input to the controller in the figure, and the attached figure 2 It is a DC bus current analog sampling circuit. In the power amplifier circuit, the DC bus IF is connected in series with a resistor R7. IF is used as a current analog sampling signal and sent to the controller. The controller is mainly controlled by a single-chip microprocessor MCU.

[0028] attached image 3 It is the main program block diagram of the single-chip microprocessor MCU. Initialize the design first, then execute the empty operation unconditionally and wait for the interrupt response. Interrupts include pulse width modulation interrupts, AD interrupts and timer current sampling delay interrupts. For the interrupt entry distribution block diagram, see attached Figure 4 , with Figure 5 It is...

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Abstract

The invention arranges a control program in MCU in brushless motor controller for an electric bicycle, makes delay sampling of the current in DC bus line by a current sampling delay subprogram, obtains phase current signal outputted by a power circuit, makes closed-loop torque control according to torque instruction and feedback signal of output phase current, regulates the duty factor of PWM signal, and as the MCU receives braking instruction, and outputs braking logic signal that makes AND operation with the PWM signal at the front stage driving part to form braking gate control signal, which controls power amplifying circuit to produce braking torque in the driven motor. And the invention controls the power amplifying circuit to charge the battery, realizing energy feedback, thus improving braking reliability and effectively raising the continuously running mileage index of the whole bicycle for once charging.

Description

technical field [0001] The invention relates to an energy feedback and braking method of a brushless motor controller for an electric bicycle. Background technique [0002] When the existing electric bicycle brakes and brakes, the brushless motor controller for driving does not generate braking torque, and the electric bicycle completely relies on the mechanical braking device to achieve braking, which will seriously affect the service life of the mechanical braking device; on the other hand , the existing electric bicycles do not have the function of energy feedback, the mechanical energy before the bicycle braking can only be converted into heat energy through the friction between the mechanical brake device and the wheel, and can not be converted into electric energy and stored in the battery to improve the continuous driving of the vehicle after one charge Mileage indicator. Contents of the invention [0003] The purpose of the present invention is to provide a method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/24
Inventor 贡俊秦小雷须斌
Owner 上海谙乃达实业有限公司
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