Patents by Inventor Satoshi Tohoda

Satoshi Tohoda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10923610
    Abstract: Provided is a solar cell that can suppress loss of power generation performance of a solar cell module when shaded and a solar cell module having the solar cell. An n-type low-doped region and a first main-surface side highly doped region, which has an n-type dopant concentration higher than that in the n-type low-doped region, are provided in an n-type crystalline silicon substrate. The first main-surface side highly doped region is arranged between the n-type low-doped region and a p-type amorphous silicon layer.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: February 16, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Satoshi Tohoda, Masato Shigematsu, Kenta Matsuyama
  • Patent number: 10840393
    Abstract: A solar cell module includes: a solar cell element that has a surface; a first sealing layer that is provided on the surface; and a light diffusion portion that is provided between an outer peripheral area C1 of the surface and the first sealing layer in such a manner that the light diffusion portion has a curvature and that contains a resin having a reflectivity higher than that of the first sealing layer.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: November 17, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Satoshi Tohoda
  • Patent number: 10784396
    Abstract: An n-type low-doped region and a first main-surface side highly doped region, which has an n-type dopant concentration higher than that in the n-type low-doped region, are provided in an n-type crystalline silicon substrate. The first main-surface side highly doped region is arranged between the n-type low-doped region and a p-type amorphous silicon layer.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: September 22, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Satoshi Tohoda, Masato Shigematsu, Kenta Matsuyama
  • Patent number: 10714645
    Abstract: A solar cell module is provided with: a plurality of solar cell elements each having a surface; a light diffusion portion provided in an outer peripheral area of the surface; and connection members which connect the plurality of solar cell elements. The outer peripheral area has restricted areas where formation of the light diffusion portion is restricted, in a part thereof, and the restricted areas are provided in positions where the outer peripheral area and the connection members intersect. The solar cell element may have, on the surface, bus bar electrodes which extend along the connection members. The restricted areas may be provided in the vicinity of ends of the bus bar electrodes.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: July 14, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Naohiro Hitachi, Tomohiro Funatani, Satoshi Tohoda, Shigeharu Taira
  • Patent number: 10700224
    Abstract: A solar cell module manufacturing method is provided. This method includes: arranging a printing plate over a solar cell element in proximity to a surface of the solar cell element; providing a coating material on the printing plate; and moving a squeegee in a first direction so as to push out the coating material via the printing plate to the solar cell element, thereby applying the coating material in an outer peripheral area of the surface of the solar cell element.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: June 30, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Satoshi Tohoda, Shigeharu Taira
  • Patent number: 10522702
    Abstract: A solar cell element includes a plurality of finger electrodes and a bus bar electrode on a surface thereof. A light diffuser is provided in an outer circumferential region of the surface. The light diffuser includes first light diffusers provided along the left side and the right side of the surface, and second light diffusers provided along the upper side and the lower side of the surface. The width of the first light diffuser in a transverse direction perpendicular to the left side or the right side, is smaller than the width of the second light diffuser in a transverse direction perpendicular to the upper side or the lower side.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: December 31, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Satoshi Tohoda
  • Patent number: 10276733
    Abstract: The solar cell (10) of the present invention comprises: a first electrode (21) including a plurality of finger portions (21a), and a busbar portion (21b) connected electrically to the plurality of finger portions (21a), each of the plurality of finger portions (21a) extending along a first direction (y), and the plurality of finger portions (21a) being arrayed along a second direction (x) perpendicular to the first direction (y) leaving gaps therebetween; and a plurality of protruding portions (23) provided on at least one side of a first main surface (20A) in the first direction (y) of the busbar portion (21b). The plurality of protruding portions (23) are provided so that the total perimeter of the protruding portions (23) per unit area at the ends of the first main surface (20A) in the second direction (x) is longer than the total perimeter of the protruding portions (23) per unit area in the central portion.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: April 30, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Satoshi Tohoda, Hiroyuki Kannou
  • Patent number: 10115846
    Abstract: In a method for manufacturing a solar cell, a photoelectric conversion element, which has a surface whose outer periphery is surrounded by a plurality of sides, and a coating having light diffusivity are prepared. The coating is applied to an outer peripheral area of the surface by screen printing in a direction from a lower side, which is one of the sides, toward an upper side, which is one of the sides and which is opposed to the lower side such that an application amount of the coating to be applied along the lower side is smaller than an application amount of the coating to be applied along the upper side.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: October 30, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shigeharu Taira, Naohiro Hitachi, Satoshi Tohoda
  • Publication number: 20180286999
    Abstract: A solar cell module is provided with: a plurality of solar cell elements each having a surface; a light diffusion portion provided in an outer peripheral area of the surface; and connection members which connect the plurality of solar cell elements. The outer peripheral area has restricted areas where formation of the light diffusion portion is restricted, in a part thereof, and the restricted areas are provided in positions where the outer peripheral area and the connection members intersect. The solar cell element may have, on the surface, bus bar electrodes which extend along the connection members. The restricted areas may be provided in the vicinity of ends of the bus bar electrodes.
    Type: Application
    Filed: June 4, 2018
    Publication date: October 4, 2018
    Inventors: Naohiro HITACHI, Tomohiro FUNATANI, Satoshi TOHODA, Shigeharu TAIRA
  • Publication number: 20180254358
    Abstract: A solar cell module manufacturing method is provided. This method includes: arranging a printing plate over a solar cell element in proximity to a surface of the solar cell element; providing a coating material on the printing plate; and moving a squeegee in a first direction so as to push out the coating material via the printing plate to the solar cell element, thereby applying the coating material in an outer peripheral area of the surface of the solar cell element.
    Type: Application
    Filed: May 3, 2018
    Publication date: September 6, 2018
    Inventors: Satoshi TOHODA, Shigeharu TAIRA
  • Patent number: 10014428
    Abstract: A solar cell module is provided with: a plurality of solar cell elements each having a surface; a light diffusion portion provided in an outer peripheral area of the surface; and connection members which connect the plurality of solar cell elements. The outer peripheral area has restricted areas where formation of the light diffusion portion is restricted, in a part thereof, and the restricted areas are provided in positions where the outer peripheral area and the connection members intersect. The solar cell element may have, on the surface, bus bar electrodes which extend along the connection members. The restricted areas may be provided in the vicinity of ends of the bus bar electrodes.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: July 3, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Naohiro Hitachi, Tomohiro Funatani, Satoshi Tohoda, Shigeharu Taira
  • Patent number: 9991404
    Abstract: A solar cell module manufacturing method is provided. This method includes: preparing a solar cell element that has a surface whose outer periphery is surrounded by a plurality of sides, an encapsulant that seals the solar cell elements, and a coating that has light diffusivity; applying the coating in an outer peripheral area of the surface via a printing plate that has a pattern corresponding to the outer peripheral area and in which a protection member is provided at a position that corresponds to a corner portion located between two sides of the plurality of sides, the two sides extending in directions that intersect with each other; and sealing, with the encapsulant, the solar cell element on which the coating is printed.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: June 5, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Satoshi Tohoda, Shigeharu Taira
  • Patent number: 9966287
    Abstract: A drying holder holds a solar cell in an upright state, and is used in an electrode drying process. The drying holder is provided with a base part on which the solar cell is placed, and a support part that is disposed on the base part, and forms a support slot that is capable of accommodating the solar cell. Vents are formed on the base part and/or the support part.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: May 8, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Satoshi Tohoda, Shigeharu Taira, Takeshi Nishiwaki
  • Publication number: 20170256660
    Abstract: A solar cell is provided with: an n-type single crystal silicon substrate; an n-type amorphous silicon layer disposed on a first main surface of the n-type single crystal silicon substrate; a light receiving surface electrode disposed on the n-type amorphous silicon layer; a p-type amorphous silicon layer disposed on a second main surface of the n-type single crystal silicon substrate; and a rear surface electrode disposed on the p-type amorphous silicon layer. The n-type single crystal silicon substrate has a resistivity within a range of 3.5-13 ?cm. An i-type amorphous silicon layer may be provided between the n-type single crystal silicon substrate and the n-type amorphous silicon layer, and another i-type amorphous silicon layer may be provided between the n-type single crystal silicon substrate and the p-type amorphous silicon layer.
    Type: Application
    Filed: May 22, 2017
    Publication date: September 7, 2017
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Satoshi Tohoda, Masao Kanda, Hiroki Yukawa
  • Patent number: 9755088
    Abstract: In a method for manufacturing a solar cell, a first electrode is formed on one surface of a photoelectric conversion section by means of screen printing using a conductive paste, and a second electrode having an area larger than that of the first electrode is formed on the other surface of the photoelectric conversion section by means of screen printing using a conductive paste having viscosity lower than that of the conductive paste.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: September 5, 2017
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Satoshi Tohoda, Kenta Ishimura, Yayoi Nakatsuka
  • Publication number: 20170194524
    Abstract: Provided is a solar cell that can suppress loss of power generation performance of a solar cell module when shaded and a solar cell module having the solar cell. An n-type low-doped region and a first main-surface side highly doped region, which has an n-type dopant concentration higher than that in the n-type low-doped region, are provided in an n-type crystalline silicon substrate. The first main-surface side highly doped region is arranged between the n-type low-doped region and a p-type amorphous silicon layer.
    Type: Application
    Filed: November 30, 2016
    Publication date: July 6, 2017
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Satoshi Tohoda, Masato Shigematsu, Kenta Matsuyama
  • Publication number: 20170179315
    Abstract: An n-type low-doped region and a first main-surface side highly doped region, which has an n-type dopant concentration higher than that in the n-type low-doped region, are provided in an n-type crystalline silicon substrate. The first main-surface side highly doped region is arranged between the n-type low-doped region and a p-type amorphous silicon layer.
    Type: Application
    Filed: December 29, 2016
    Publication date: June 22, 2017
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Satoshi Tohoda, Masato Shigematsu, Kenta Matsuyama
  • Publication number: 20160343895
    Abstract: A solar cell element includes a plurality of finger electrodes and a bus bar electrode on a surface thereof. A light diffuser is provided in an outer circumferential region of the surface. The light diffuser includes first light diffusers provided along the left side and the right side of the surface, and second light diffusers provided along the upper side and the lower side of the surface. The width of the first light diffuser in a transverse direction perpendicular to the left side or the right side, is smaller than the width of the second light diffuser in a transverse direction perpendicular to the upper side or the lower side.
    Type: Application
    Filed: August 4, 2016
    Publication date: November 24, 2016
    Inventor: Satoshi TOHODA
  • Publication number: 20160343897
    Abstract: A solar cell module is provided with: a plurality of solar cell elements each having a surface; a light diffusion portion provided in an outer peripheral area of the surface; and connection members which connect the plurality of solar cell elements. The outer peripheral area has restricted areas where formation of the light diffusion portion is restricted, in a part thereof, and the restricted areas are provided in positions where the outer peripheral area and the connection members intersect. The solar cell element may have, on the surface, bus bar electrodes which extend along the connection members. The restricted areas may be provided in the vicinity of ends of the bus bar electrodes.
    Type: Application
    Filed: July 7, 2016
    Publication date: November 24, 2016
    Inventors: Naohiro HITACHI, Tomohiro FUNATANI, Satoshi TOHODA, Shigeharu TAIRA
  • Publication number: 20160308076
    Abstract: In a method for manufacturing a solar cell, a photoelectric conversion element, which has a surface whose outer periphery is surrounded by a plurality of sides, and a coating having light diffusivity are prepared. The coating is applied to an outer peripheral area of the surface by screen printing in a direction from a lower side, which is one of the sides, toward an upper side, which is one of the sides and which is opposed to the lower side such that an application amount of the coating to be applied along the lower side is smaller than an application amount of the coating to be applied along the upper side.
    Type: Application
    Filed: June 17, 2016
    Publication date: October 20, 2016
    Inventors: Shigeharu TAIRA, Naohiro HITACHI, Satoshi TOHODA