RAPID HILL HOLD AUTO-BALANCE APPARATUS AND METHOD FOR VEHICLES PROPELLED BY MAGNETIC SYNCHRONOUS MOTORS

• US 20200136534A1
• Filed: 09/26/2019
• Published: 04/30/2020
• Est. Priority Date: 10/29/2018
• Status: Active Application

• Current Assignee: Justin William V. Jones, Matthew M. Allen, Yang Sun, Yujiang Wu
• Original Assignee: Justin William V. Jones, Matthew M. Allen, Yang Sun, Yujiang Wu
• Inventors: Wu, Yujiang, SUN, YANG, Jones, Justin William V., Allen, MAtthew M.
• Application Number:
  US16/583,296
• Publication Number:
  US 20200136534A1
• Time in Patent Office: Days
• CPC Class Codes: B60L 15/2018 for braking on a slope
• CPC Class Codes: B60L 15/2027 whilst maintaining constant speed
• CPC Class Codes: B60L 2260/22 Standstill, e.g. zero speed
• CPC Class Codes: B60L 50/50 using propulsion power supplied by batteries or fuel cells
• CPC Class Codes: B60L 7/006 Dynamic electric braking by reversing current, i.e. plugging
• CPC Class Codes: B60L 7/28 Eddy-current braking
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2540/12 Brake pedal position
• CPC Class Codes: B60W 30/18118 Hill holding
• CPC Class Codes: H02P 3/025 holding the rotor in a fixed position after deceleration
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

An auto-balance hill-hold apparatus and method for arresting unintentional roll after coming to a stop on a hill or slope in vehicles powered by magnetic synchronous motors by automatically determining and rapidly applying the appropriate balancing counter-torque required to negate torque caused by the acceleration of gravity, and subsequently communicating the magnitude of the determined counter-torque to a speed controller so that it may seamlessly transition to an alternative and more efficient method of generating the equivalent balancing counter-torque and provide a smoother transition to operation mode.

Claims

1. An improved method of rapidly preventing post stoppage wheel roll in electrically propelled vehicles, said method comprising the steps of:

receiving notification from position sensors that the rotor of the electric motor has began rotating in the opposite direction of the selected gear;

recording the initial position of the rotor;

applying an initial current of a pre-determined magnitude in the vector direction of the initial position of the rotor to the electric motor;

determining the angle of rotation of the rotor rotation from when said initial current was applied to the motor until rotor ceases rotating or phase angle equals MTPA angle to determine modified current;

engaging speed controller to produce torque equal to torque created by initial current of a pre-determined magnitude in the vector direction of the initial position of the rotor to the electric motor.

10. An apparatus for rapidly preventing post stoppage wheel roll in electrically propelled vehicles, said apparatus comprising:

a position sensor, integrated with an electrical motor such that it can determine the position of the rotor;

activation sensors on the electric vehicles brake and accelerator that can determine when the brake and accelerator is activated;

a (traditional) speed control; and

power source;

a controllable power so;