Electric motorcycle

Abstract

The invention relates to the arrangement of a battery, which provides an electric motorcycle capable of preventing the complexity of the body structure and ensuring the good driving performance thereof.The electric motorcycle (1) comprises a motor (50) for applying the rotation driving force on the trailing wheel (WR) thereof, a battery (30) for providing electric power to the motor (50), a FET electromotor driving part (60) for driving the motor (50),a control base board (40) for controlling the FET electromotor driving part (60),and a swing arm (20).The shaft of the swing arm mounted on themotorcycle body in a freely swinging way supports the rear wheel (WR).The swing arm accommodates the motor (50), the FET electromotor driving part (60) and the control base board (40).The battery (30) arranged inside the swing arm (20) is close to the swinging axle (21) of the swing arm (20).The battery (30) is in an elongated shape and the length direction of the battery points to the width direction of the motorcycle.The FET electromotor driving part (60) and the control base board (40) are arranged in a non-overlapping way when the motorcycle is viewed from the side thereof.

Description

technical field [0001] The present invention relates to an electric motorcycle, and more particularly, to an electric motorcycle that travels by rotational driving force of an electric motor supplied with electric power from an on-vehicle battery. Background technique [0002] Conventionally, there is known a two-wheeled vehicle that uses an electric motor as a power source for driving wheels. [0003] Patent Document 1 discloses a structure in which a motor, a battery, a control board, etc. In a disc-shaped unit arranged around the axle of the drive wheel. [0004] Patent Document 1: Japanese Patent No. 4009638 [0005] However, although the structure described in Patent Document 1 can be applied to an assist bicycle using an electric motor as auxiliary power, it is difficult to apply to an electric two-wheeled vehicle that requires a large electric motor and a battery for running only by the electric motor. Furthermore, since the weight of the motor, battery, control bo...

AI Technical Summary

Problems solved by technology

[0005] However, although the structure described in Patent Document 1 can be applied to an assist bicycle using an electric motor as auxiliary power, it is difficult to apply to an electric two-wheeled vehicle that requires a large electric motor and a battery in order to run only by the electric motor.

In addition, since the weight of the motor, battery, and control board, etc., all contribute to the added weight of the driving force, there is a problem that the weight at the position away from the center of gravity of the vehicle body and the unsprung weight increase

[0006] In addition, in an electric motorcycle in which the rear wheels are supported by a swing arm that can swing freely with respect to the vehicle body, a structure in which the motor is arranged in the swing arm and the battery is arranged on the side of the vehicle body is conceivable. The high-voltage wiring for power supply tends to become longer

In such a case, since the high-voltage wiring is exposed to the outside between the vehicle body and the swing arm, problems such as waterproof measures for the entrance and exit of the high-voltage wiring are required.

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