公开(公告)号：US12119184B2

公开(公告)日：2024-10-15

申请号：US17886538

申请日：2022-08-12

Applicant: DENSO CORPORATION ,  TOKYO UNIVERSITY OF SCIENCE FOUNDATION

Inventor： Yoshihiro Kozawa ,  Noriyuki Matsushita ,  Kazuhiko Kano ,  Yumi Tanaka ,  Hiroki Otsuka ,  Yusuke Edano

IPC: H02N1/08 ,  H01G7/02 ,  H02K35/02 ,  H02N1/00

CPC classification number: H01G7/025 ,  H02N1/08

Abstract: A power generator includes an electret including a first charged surface and a second charged surface having opposite polarities, a first electrode partially formed on the first charged surface, a second electrode formed on the second charged surface, a third electrode disposed to face the first charged surface with a space, and at least one of a power storage unit or an output unit. The first charged surface has a current collecting surface that is exposed outward. The first electrode and the second electrode form a first power generating unit and the third electrode and the second electrode form a second power generating unit. The electret is formed by polarizing an electret material that includes an inorganic dielectric having a bandgap energy of 4 eV or more.

公开(公告)号：US12191088B2

公开(公告)日：2025-01-07

申请号：US17886548

申请日：2022-08-12

Applicant: DENSO CORPORATION ,  TOKYO UNIVERSITY OF SCIENCE FOUNDATION

Inventor： Yoshihiro Kozawa ,  Noriyuki Matsushita ,  Kazuhiko Kano ,  Yumi Tanaka ,  Hiroki Otsuka ,  Yusuke Edano

IPC: H01G7/02 ,  H02N1/08

Abstract: A power generator includes a power generating unit and at least one of a power storage unit or an output unit that is electrically connected to the power generating unit. The power generating unit includes an electret having a first charged surface and a second charged surface that are charged with opposite polarities, a first electrode formed on the first charged surface, and a second electrode formed on the second charged surface. The electret is formed by polarizing an electret material that includes an inorganic dielectric having a bandgap energy of 4 eV or more. At least one of the first electrode or the second electrode are partially disposed on the corresponding charged surface such that at least one of the first charged surface or the second charged surface has a portion as a current collecting surface exposed outward.