US Patent 9238495 Straddle electric vehicle

A straddle electric vehicle includes a battery unit which is an electric power supply for an electric motor; a vehicle body frame including a main frame unitarily joined to a head pipe; and a sub-frame extending rearward from an upper portion of the main frame. The main frame includes a down frame member extending downward from the head pipe and a lower frame member extending rearward from a lower end of the down frame member, and the sub-frame is detachably joined to the vehicle body frame. A bottom portion of the battery unit is supported on the lower frame member of the main frame, and a side portion of the battery unit is covered with the sub-frame.