×

Power generation device for mobile body

  • US 10,075,103 B2
  • Filed: 07/14/2014
  • Issued: 09/11/2018
  • Est. Priority Date: 11/08/2013
  • Status: Expired due to Fees
First Claim
Patent Images

1. A power generation device for a mobile body that generates power based on a relative flow of an external fluid when the mobile body travels, the device comprising:

  • a plurality of flat-plate shaped power generating units, each of which includes an elastically deformable flat-plate shaped base member and a piezoelectric film, wherein the base member and the piezoelectric film are laminated alternately, and when the base member is elastically deformed in a thickness direction by a flow of the external fluid, the piezoelectric film is warped to generate power; and

    a holding member, which is arranged in the mobile body, wherein the power generating units are arranged in a direction intersecting the flow direction of the external fluid and spaced apart, and the holding member holds the power generating units at a position where the external fluid flows such that flat surfaces of flat-plate shapes of the power generating units are oriented to be substantially parallel with the flow direction of the external fluid, whereineach power generating unit has an elongated flat-plate shape,opposite ends of the power generating unit in a longitudinal direction are held by the holding member such that the power generating unit is in an orientation in which a longitudinal axis is substantially perpendicular to the flow direction of the external fluid,a fixing member is provided at each of the opposite ends in the longitudinal direction of each power generating unit,the power generating units are arranged in the holding member via the fixing members to pivot in accordance with the flow of the external fluid, andwith respect to a width direction, which is perpendicular to the longitudinal direction, a part in the opposite ends of the elongated flat-plate shape in the longitudinal direction that is located on an upstream side in the flow direction of the external fluid is fixed to the fixing member, and a part that is located on a downstream side is movable in a thickness direction and relative to the fixing member.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×