Patents by Inventor Sachio Akahira

Sachio Akahira 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).

  • Publication number: 20230299255
    Abstract: An electrode for a battery includes an electrode body and an electrode tab. The electrode body includes a current collector and an active material layer provided on the current collector. The electrode tab is coupled to the current collector and extends in a first direction. The electrode body includes a first curved end part, a first noncurved end part, a second curved end part, and a second noncurved end part. The first curved end part has a convex shape and is disposed on a back side relative to the electrode tab in a second direction intersecting with the first direction. The first noncurved end part is coupled to the first curved end part and forms a first corner part at a coupling portion to the first curved end part. The first corner part has a convex shape toward the back side. The second curved end part has a convex shape and is disposed on a front side relative to the electrode tab in the second direction.
    Type: Application
    Filed: May 24, 2023
    Publication date: September 21, 2023
    Inventors: Hironobu KOBAYASHI, Sachio AKAHIRA
  • Patent number: 10347874
    Abstract: A battery pack includes: a battery having a main surface; and a resin layer capable of being integrated with an armor member armoring the battery so that at least a part of the main surface of the battery is exposed and covering the main surface of the battery, wherein the resin layer is formed by curing a reaction curable resin having a viscosity of not less than 80 mPa·second to less than 1000 mPa·second and a thickness of the resin layer on the main surface of the battery ranges from 0.05 mm to smaller than 0.4 mm.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: July 9, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takeru Yamamoto, Sachio Akahira, Toshinori Saito, Yasuhiro Oi, Nobuya Okano
  • Publication number: 20150194642
    Abstract: A battery pack includes: a battery having a main surface; and a resin layer capable of being integrated with an armor member armoring the battery so that at least a part of the main surface of the battery is exposed and covering the main surface of the battery, wherein the resin layer is formed by curing a reaction curable resin having a viscosity of not less than 80 mPa·second to less than 1000 mPa·second and a thickness of the resin layer on the main surface of the battery ranges from 0.05 mm to smaller than 0.4 mm.
    Type: Application
    Filed: March 19, 2015
    Publication date: July 9, 2015
    Inventors: Takeru Yamamoto, Sachio Akahira, Toshinori Saito, Yasuhiro Oi, Nobuya Okano
  • Publication number: 20120183819
    Abstract: A battery pack includes a battery and a casing covering the battery and formed of a shape-memory resin. A portion or the entirety of the casing is deformed by heating at a predetermined temperature. The deformed casing returns to an original shape at the predetermined temperature or higher.
    Type: Application
    Filed: December 14, 2011
    Publication date: July 19, 2012
    Applicant: SONY CORPORATION
    Inventors: Takeru Yamamoto, Toshinori Saito, Sachio Akahira
  • Publication number: 20120121944
    Abstract: A battery pack includes a formed portion coating at least a portion of the outer surface of a battery or a plurality of battery packs with reaction-curable resin; and spacers having dimension-absorbing ability and attached to the rear surface of the formed portion.
    Type: Application
    Filed: October 18, 2011
    Publication date: May 17, 2012
    Inventors: Takeru YAMAMOTO, Sachio Akahira, Masahiro Sawaguchi
  • Publication number: 20110250475
    Abstract: A battery pack includes: a battery having a main surface; and a resin layer capable of being integrated with an armor member armoring the battery so that at least a part of the main surface of the battery is exposed and covering the main surface of the battery, wherein the resin layer is formed by curing a reaction curable resin having a viscosity of not less than 80 mPa·second to less than 1000 mPa·second and a thickness of the resin layer on the main surface of the battery ranges from 0.05 mm to smaller than 0.4 mm.
    Type: Application
    Filed: April 5, 2011
    Publication date: October 13, 2011
    Applicant: SONY CORPORATION
    Inventors: Takeru Yamamoto, Sachio Akahira, Toshinori Saito, Yasuhiro Oi, Nobuya Okano
  • Patent number: 7604842
    Abstract: Provided are an electrode manufacturing apparatus and a method of manufacturing an electrode in which an electrode capable of preventing the occurrence of an internal short circuit is manufactured. A current collector is passed through a coating position in a downward direction by a reference roll. Thereby, just after coating of a mixture is interrupted, a built-up mixture between the current collector and a coating outlet is pulled in a downward direction by the current collector, so the position of the built-up mixture is lower than the position of the coating outlet. Therefore, the adhesion of the mixture to the coating outlet can be prevented, and as a result, a non-forming region where no mixture is formed can be prevented from being coated with the mixture.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: October 20, 2009
    Assignee: Sony Corporation
    Inventors: Masayuki Shida, Sachio Akahira, Osamu Tahara, Takanobu Yoshino
  • Patent number: 7157179
    Abstract: A non-aqueous electrolyte cell in which the cell capacity is improved and positioning accuracy of external terminals is assured. A unit cell is housed in an exterior packaging material of a laminated film and encapsulated on heat sealing. To elongated positive and negative electrodes of the unit cell are electrically connected electrode terminal leads which are exposed to outside of the exterior packaging material as the leads are surrounded by heat fused portions. The unit cell is a wound assembly of the positive and negative electrodes each of which is includes of a current collector carrying a layer of an active material. The electrode terminal leads are mounted on the current collectors of the positive and negative electrodes in the vicinity of the innermost turn of the wound assembly. In manufacturing the unit cell, the positions of the electrode terminal leads are detected and positioned with respect to the flat winding arbor. The positive and negative electrodes then are wound on the winding arbor.
    Type: Grant
    Filed: February 16, 2004
    Date of Patent: January 2, 2007
    Assignee: Sony Corporation
    Inventor: Sachio Akahira
  • Patent number: 7052551
    Abstract: To provide a method of manufacturing a battery capable of providing an equal amount of electrolyte in each battery and of enhancing productivity and coating machines employed thereof. The sensor detects a boundary from the collector exposed region C of the belt-shaped positive electrode to the positive electrode mixture layer exposed region B, on the basis of the detection timing, the shutter is withdrawn to open the flowing path and the proportioning pomp is driven. Following this, when the sensor detected a boundary from the positive electrode mixture layer exposed region B to a collector exposed region C, and on the basis of the detection timing, the shutter is protruded inside the flowing path to close the flowing path and the proportioning pump stops. As a result of this, the electrolyte stops to be delivered from the nozzle. The electrolyte layers are intermittently formed by repeating the same procedures.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: May 30, 2006
    Assignee: Sony Corporation
    Inventors: Masayuki Shida, Sachio Akahira, Takanobu Yoshino, Kazuhiro Imaizumi, Tsuyoshi Sugiyama
  • Publication number: 20040161665
    Abstract: A non-aqueous electrolyte cell in which the cell capacity is improved and positioning accuracy of external terminals is assured. An unit cell is housed in an exterior packaging material of a laminated film and encapsulated on heat sealing. To elongated positive and negative terminals of the unit cell are electrically connected electrode terminal leads which are exposed to outside of the exterior packaging material as the leads are surrounded by heat fused portions. The unit cell is a wound assembly of the positive and negative electrodes each of which is comprised of a current collector carrying a layer of an active material. The electrode terminal leads are mounted on the current collectors of the positive and negative electrodes in the vicinity of the innermost turn of the wound assembly. In manufacturing the unit cell, the positions of the electrode terminal leads are detected and positioned with respect to the flat winding arbor. The positive and negative electrodes then are wound on the winding arbor.
    Type: Application
    Filed: February 16, 2004
    Publication date: August 19, 2004
    Inventor: Sachio Akahira
  • Patent number: 6776807
    Abstract: To provide a method of manufacturing a battery capable of providing an equal amount of electrolyte in each battery and of enhancing productivity and coating machines employed thereof. The sensor detects a boundary from the collector exposed region C of the belt-shaped positive electrode to the positive electrode mixture layer exposed region B, on the basis of the detection timing, the shutter is withdrawn to open the flowing path and the proportioning pomp is driven. Following this, when the sensor detected a boundary from the positive electrode mixture layer exposed region B to a collector exposed region C, and on the basis of the detection timing, the shutter is protruded inside the flowing path to close the flowing path and the proportioning pump stops. As a result of this, the electrolyte stops to be delivered from the nozzle. The electrolyte layers are intermittently formed by repeating the same procedures.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: August 17, 2004
    Assignee: Sony Corporation
    Inventors: Masayuki Shida, Sachio Akahira, Takanobu Yoshino, Kazuhiro Imaizumi, Tsuyoshi Sugiyama
  • Patent number: 6706080
    Abstract: A non-aqueous electrolyte cell in which the cell capacity is improved and positioning accuracy of external terminals is assured. A unit cell is housed in an exterior packaging material of a laminated film and encapsulated on heat sealing. To elongated positive and negative electrodes of the unit cell are electrically connected electrode terminal leads which are exposed to outside of the exterior packaging material as the leads are surrounded by heat fused portions. The unit cell is a wound assembly of the positive and negative electrodes each of which is includes a current collector carrying a layer of an active material. The electrode terminal leads are mounted on the current collectors of the positive and negative electrodes in the vicinity of the innermost turn of the wound assembly. In manufacturing the unit cell, the positions of the electrode terminal leads are detected and positioned with respect to the flat winding arbor. The positive and negative electrodes then are wound on the winding arbor.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: March 16, 2004
    Assignee: Sony Corporation
    Inventor: Sachio Akahira
  • Publication number: 20030232127
    Abstract: Provided are an electrode manufacturing apparatus and a method of manufacturing an electrode in which an electrode capable of preventing the occurrence of an internal short circuit is manufactured. A current collector is passed through a coating position in a downward direction by a reference roll. Thereby, just after coating of a mixture is interrupted, a built-up mixture between the current collector and a coating outlet is pulled in a downward direction by the current collector, so the position of the built-up mixture is lower than the position of the coating outlet. Therefore, the adhesion of the mixture to the coating outlet can be prevented, and as a result, a non-forming region where no mixture is formed can be prevented from being coated with the mixture.
    Type: Application
    Filed: March 5, 2003
    Publication date: December 18, 2003
    Inventors: Masayuki Shida, Sachio Akahira, Osamu Tahara, Takanobu Yoshino
  • Publication number: 20030205201
    Abstract: To provide a method of manufacturing a battery capable of providing an equal amount of electrolyte in each battery and of enhancing productivity and coating machines employed thereof. The sensor detects a boundary from the collector exposed region C of the belt-shaped positive electrode to the positive electrode mixture layer exposed region B, on the basis of the detection timing, the shutter is withdrawn to open the flowing path and the proportioning pomp is driven. Following this, when the sensor detected a boundary from the positive electrode mixture layer exposed region B to a collector exposed region C, and on the basis of the detection timing, the shutter is protruded inside the flowing path to close the flowing path and the proportioning pump stops. As a result of this, the electrolyte stops to be delivered from the nozzle. The electrolyte layers are intermittently formed by repeating the same procedures.
    Type: Application
    Filed: May 28, 2003
    Publication date: November 6, 2003
    Inventors: Masayuki Shida, Sachio Akahira, Takanobu Yoshino, Kazuhiro Imaizumi, Tsuyoshi Sugiyama
  • Patent number: 6387562
    Abstract: A non-aqueous electrolyte cell in which the cell capacity is improved and positioning accuracy of external terminals is assured. A unit cell is housed in an exterior packaging material of a laminated film and encapsulated on heat sealing. To elongated positive and negative electrodes of the unit cell are electrically connected electrode terminal leads which are exposed to outside of the exterior packaging material as the leads are surrounded by heat fused portions. The unit cell is a wound assembly of the positive and negative electrodes each of which is includes a current collector carrying a layer of an active material. The electrode terminal leads are mounted on the current collectors of the positive and negative electrodes in the vicinity of the innermost turn of the wound assembly. In manufacturing the unit cell, the positions of the electrode terminal leads are detected and positioned with respect to the flat winding arbor. The positive and negative electrodes then are wound on the winding arbor.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: May 14, 2002
    Assignee: Sony Corporation
    Inventor: Sachio Akahira
  • Publication number: 20020029465
    Abstract: To provide a method of manufacturing a battery capable of providing an equal amount of electrolyte in each battery and of enhancing productivity and coating machines employed thereof. The sensor detects a boundary from the collector exposed region C of the belt-shaped positive electrode to the positive electrode mixture layer exposed region B, on the basis of the detection timing, the shutter is withdrawn to open the flowing path and the proportioning pomp is driven. Following this, when the sensor detected a boundary from the positive electrode mixture layer exposed region B to a collector exposed region C, and on the basis of the detection timing, the shutter is protruded inside the flowing path to close the flowing path and the proportioning pump stops. As a result of this, the electrolyte stops to be delivered from the nozzle. The electrolyte layers are intermittently formed by repeating the same procedures.
    Type: Application
    Filed: March 19, 2001
    Publication date: March 14, 2002
    Inventors: Masayuki Shida, Sachio Akahira, Takanobu Yoshino, Kazuhiro Imaizumi, Tsuyoshi Sugiyama
  • Publication number: 20010046623
    Abstract: A non-aqueous electrolyte cell in which the cell capacity is improved and positioning accuracy of external terminals is assured. An unit cell is housed in an exterior packaging material of a laminated film and encapsulated on heat sealing. To elongated positive and negative terminals of the unit cell are electrically connected electrode terminal leads which are exposed to outside of the exterior packaging material as the leads are surrounded by heat fused portions. The unit cell is a wound assembly of the positive and negative electrodes each of which is comprised of a current collector carrying a layer of an active material. The electrode terminal leads are mounted on the current collectors of the positive and negative electrodes in the vicinity of the innermost turn of the wound assembly. In manufacturing the unit cell, the positions of the electrode terminal leads are detected and positioned with respect to the flat winding arbor. The positive and negative electrodes then are wound on the winding arbor.
    Type: Application
    Filed: June 29, 2001
    Publication date: November 29, 2001
    Inventor: Sachio Akahira
  • Patent number: 6277515
    Abstract: A solid electrolyte battery is provided which is able to satisfactorily perform discharge of a large electric current in a short time and large electric current pulse even in a low temperature environment. A solid electrolyte battery incorporates: a battery structure portion constituted by forming a positive-electrode active-material layer in a portion of the surface of a positive-electrode collector and a negative-electrode active-material layer in a portion of the surface of a negative-electrode collector to be opposite to each other through a polymer electrolyte.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: August 21, 2001
    Assignee: Sony Corporation
    Inventor: Sachio Akahira