Patent ID: 6390215
Filing Date: 2002-05-21
Classification: B60K,B60L,Y02T

Abstract:
An electric vehicle comprising:a main battery mounted on a vehicle body; a trailer detachably connected to said electric vehicle; a sub-battery disposed in said trailer; an electric motor-generator electrically connected to said main battery and said sub-battery for being powered thereby to generate a traveling drive force, and which generates a regenerative brake force at deceleration of the vehicle body; and control means for controlling drive and regeneration operation of said motor-generator, wherein, when said sub-battery is connected to the vehicle body, said control means controls said motor-generator so that: (i) said motor-generator preferentially first uses an electric power of said sub-battery, before using an electric power of said main battery, for powering said motor-generator and (ii) said motor-generator preferentially first charges said main battery, before charging said sub-battery, by a regenerative power generated by said motor-generator.