Electric vehicle

• US 5,465,806 A
• Filed: 05/11/1993
• Issued: 11/14/1995
• Est. Priority Date: 03/31/1989
• Status: Expired due to Term

• Current Assignee: Hiromasa Higasa
• Original Assignee: Kabushiki Kaisha Shikoku Sogo Kenkyujo, Kazunobo Sato
• Inventors: Ishikawa, Fumihiko, Sato, Kazunobu, Matsumura, Shigenori, Higasa, Hiromasa, Nasu, Hidetoshi
• Primary Examiner(s): Culbreth, Eric D.
• Application Number:
  US08/059,335
• Time in Patent Office: 917 Days
• Field of Search: 180/165, 180/65.1, 180/234, 180/244, 180/242, 180/907
• US Class Current: 180/165
• CPC Class Codes: B60K 17/043 Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
• CPC Class Codes: B60K 17/356 having fluid or electric motor, for driving one or more wheels disposition of motor in, or adjacent to, traction wheel B60K7/00
• CPC Class Codes: B60K 2007/0038 the motor moving together with the wheel axle
• CPC Class Codes: B60K 2007/0092 the motor axle being coaxial to the wheel axle
• CPC Class Codes: B60K 7/0007 the motor being electric
• CPC Class Codes: B60L 15/2009 for braking
• CPC Class Codes: B60L 15/2036 Electric differentials, e.g. for supporting steering vehicles
• CPC Class Codes: B60L 2220/44 Wheel Hub motors, i.e. integrated in the wheel hub
• CPC Class Codes: B60L 2220/46 Wheel motors, i.e. motor connected to only one wheel
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/14 Acceleration
• CPC Class Codes: B60L 2240/24 Steering angle
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/461 Speed
• CPC Class Codes: B60L 2260/28 Four wheel or all wheel drive
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60L 7/14 for vehicles propelled by ac motors
• CPC Class Codes: B60T 2270/613 ESP features related thereto
• 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

Abstract

An electric vehicle in which each of the driving wheels is adapted to be driven and regeneratively braked by its individual and independently controlled driving motor, and the driving motors are independently controlled in response to sensors detecting the travel of the vehicle including wheel rotation sensors, steering angle sensors, and acceleration and braking sensors.

Claims

1. An electric vehicle having a body, battery and driving wheels at both sides of said body of said vehicle, the vehicle comprising sensor means for generating control signals based on the travel of said vehicle, and a plurality of driving/braking motor means, each driving/braking motor means being connected to a respective driving/braking wheel, said battery and said sensor means, for independently driving and regeneratively braking said respective one of said driving/braking wheels in response to said signals;

wherein said sensor means comprises wheel rotation sensors each detecting the rotation of a respective one of said driving/braking wheels, steering angle sensors each detecting the steering angle of a respective one of said driving/braking wheels, acceleration sensors each detecting the acceleration of a respective one of said driving/braking wheels, and braking sensors each detecting the braking of a respective one of said driving/braking wheels.

2. An electric vehicle having a body provided with driving wheels at both sides of the body of said vehicle comprising driving motors each connected to one of said driving wheels respectively for independently driving and braking said respective driving wheels, a driving torque of said driving motor and a braking torque by regenerative braking of said driving motor being each independently controlled by signals based upon the travel of said vehicle;

wheel rotation sensors each detecting a wheel rotation signal of each wheel, a steering angle sensor detecting a steering angle, an acceleration sensor detecting the acceleration condition of the vehicle and a brake sensor detecting the braking condition of the vehicle, and wherein each of the driving motors is independently controlled by operating the signals from said sensors.