Electric carrier and motor braking parking method thereof

A technology for electric pallet trucks and motor braking, applied in electric vehicles, power management, control drive, etc., can solve the problem of reducing the service life of mechanical components such as gearboxes, not considering special operations such as parking on slopes, and uncontrollable vehicle movement, etc. problems, to achieve smooth parking, high parking efficiency, and reduce wear and tear
CN111775718AActive Publication Date: 2020-10-16HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2020-10-16

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Abstract

The invention discloses an electric carrier and a motor braking parking method thereof. The state information of the electric carrier is analyzed when the electric carrier is parked on a flat ground and a slope, and heuristic rules of stable parking of the electric carrier are determined; and after it is determined that an electric carrier operator has a parking intention according to a signal fedback by an accelerator, a proper braking method can be selected according to the state information of the electric carrier in combination with the heuristic rules, the braking torque is adjusted in real time, and an electromagnetic band-type brake is controlled, so that the vehicle can be stably parked on the flat ground or the slope. In addition, the electric carrier disclosed by the invention comprises a motor driver, a motor, the electromagnetic band-type brake and the accelerator, wherein the motor not only provides driving force, but also provides braking force required by braking parking, the motor driver can realize seamless switching between a driving state and a braking state, and energy fed back during regenerative braking can charge the power battery, so that the endurance timeof the vehicle is prolonged.
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Description

technical field

[0001] The invention belongs to the technical field of motor drive, and more specifically relates to an electric transport vehicle and a method for braking and parking the electric vehicle. Background technique

[0002] In recent years, electric pallet trucks have gradually replaced manual pallet trucks, appearing in logistics, factories and large supermarkets, etc., greatly improving the efficiency of cargo delivery and saving manpower and time. The driving power of the electric pallet truck comes from the electric motor, and there are two types of motors generally used in this occasion: brushed DC motor and brushless DC motor. At present, brushed DC motors have been developed for a long time and the technology is mature. There are a large number of electric pallet trucks driven by brushed motors in the market; brushless DC motors are in a stage of rapid development, because of their brushless structure, long life and maintenance-free And other outstanding ...

Claims

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