An assembling method of an electric vehicle comprises the steps of: assembling a vehicle body including a frame, wheels and an electric motor; conducting a vehicle body test including confirmation of a state of driving power transmission from the electric motor to the wheels by connecting an electric power supply unit installed in a vehicle body test place to the electric motor of the vehicle body and supplying electric power from the electric power supply unit to the electric motor; detaching the electric power supply unit from the electric motor and transporting the vehicle body which has passed the vehicle body test from the vehicle body test place to a mounting place, in a state in which a battery is not mounted to the vehicle body; and mounting the battery to the transported vehicle body in the mounting place.

An ebike comprises a front wheel, a rear wheel, a frame structure supported on the front wheel and the rear wheel, a crank assembly, and a battery assembly. The frame structure can include a front fork supported on the front wheel, a head tube coupled to the front fork, and a down tube extending downward and rearward from the head tube, the down tube defining a down tube axis and being open at its lower end. The crank assembly can be supported by the frame structure and can be rotatable about a crank axis that is spaced rearward from the down tube axis. The battery assembly can be at least partially secured in the down tube in an installed position and can be slidable into the down tube from the lower end of the down tube along the down tube axis.

An electric motorcycle includes a battery pack, a controller and a charging device arranged in sequence along the height direction of the frame. The battery pack and the charging device are positioned on the frame adjacent to the front wheel. The rear suspension comprises a rear fork and a shock absorber connected to the frame by a shaft, the rear fork is connected to the rear wheel, and the electric motor is arranged on the rear fork. The center of gravity of the electric motorcycle is lower. The electric motorcycle can run stably even at a speed of 120 km/h.

An electric motorcycle includes a battery pack, a controller and a charging device arranged in sequence along the height direction of the frame. The battery pack and the charging device are positioned on the frame adjacent to the front wheel. The rear suspension comprises a rear fork and a shock absorber connected to the frame by a shaft, the rear fork is connected to the rear wheel, and the electric motor is arranged on the rear fork. The center of gravity of the electric motorcycle is lower. The electric motorcycle can run stably even at a speed of 120 km/h.

A bicycle battery device includes a bicycle frame tube such as a down tube. A battery is insertable in the longitudinal direction of the bicycle frame tube through a battery opening. An adjustment element is arranged between the battery and an inner contour of the bicycle frame tube to simplify the adjustment.

A three wheeled stand-up or sit down foldable and portable electric personal mobility vehicle for fulfilling the needs of a broad spectrum of users including the handicapped and recreational users. The personal mobility vehicle has two major parts, including a front wheel frame assembly and a rear frame chassis assembly. These major parts are configured to easily fold into a smaller size so that the vehicle can be easily transportable and more conveniently stored. Furthermore, a versatile seat and seat post are implemented to enable a user to sit or stand, and the seat can be easily removed, without tools, to create more space should a user wish.

An electric vehicle comprises an electric motor for driving a wheel; a main battery for activating the electric motor; a case to which a sub-battery for activating the electric motor is detachably mounted; a connection terminal to which a terminal of the sub-battery is connected; a mounting detecting sensor for detecting that the connection terminal is connected to the terminal of the sub-battery; and a controller which detects the SOCs of the batteries and is configured such that electric power is supplied preferentially from the mounted sub-battery to the electric motor, when the SOC of the sub-battery is equal to or greater than a predetermined value, and electric power is supplied from the main battery to the electric motor, when the SOC of the sub-battery is less than the predetermined value.

A bicycle frame with a hidden battery pack has a tube member and a battery pack. The tube member is hollow and has a peripheral surface, a receiving space, and a replacement opening. The receiving space is formed inside the tube member. The replacement opening is defined in the peripheral surface of the tube member and communicates with the receiving space. The battery pack is mounted in the receiving space and has multiple batteries. Each two adjacent batteries of the multiple batteries are connected to each other and are able to rotate relative to each other. Each battery of the multiple batteries is capable of being rotated or swung to pass through the replacement opening.

Vehicle traction device, mainly for land vehicles, of the type comprising a motor and a transmission wherein the motor preferably has an axial rotation, such as an electric motor, wherein the motor rotation is coplanar and concurrent with the primary shaft of the transmission, and wherein the primary shaft is in turn coaxial to the output shaft, such that the output shaft crosses the primary shaft and extends beyond the ends thereof.

A bicycle with removable battery for supplying power to electric components, comprising a frame composed of an upper tube connected with a front oblique tube and with a rear vertical tube, which in turn are connected in a lower region so as to form a seat for a bottom bracket and with which a pair of horizontal rear chainstays and a pair of oblique rear chainstays are coupled. The front oblique tube has an axial seat for a removable battery and for accommodating connection and/or electric power supply cables. The axial seat has an axis that passes above the bottom bracket and a lower end that is open and located at the interspace between the pair of horizontal rear chainstays.