Patents by Inventor Tomoharu Arai
Tomoharu Arai 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: 20220302511Abstract: In a method for producing a nonaqueous electrolyte secondary battery according to the present invention, a wound electrode body and a flat wound electrode body are formed by pressing. The flat wound electrode body and a cover member are connected to each other; a battery case and the cover member are integrated with each other; and a nonaqueous electrolyte solution is injected using a liquid injection port of the cover member, and the liquid injection port is sealed after the liquid injection, thereby forming a nonaqueous electrolyte secondary battery before inspection. Subsequently, the nonaqueous electrolyte secondary battery before inspection is pressed into a predetermined pressed state. A predetermined charge/discharge inspection is performed on the nonaqueous electrolyte secondary battery in the predetermined pressed state. If predetermined inspection specifications are satisfied in the predetermined charge/.Type: ApplicationFiled: July 1, 2020Publication date: September 22, 2022Applicant: SANYO Electric Co., Ltd.Inventors: Tetsuya Okado, Masashi Muraoka, Tomoharu Arai, Atsushi Miyazaki
-
Publication number: 20220294087Abstract: A method for producing a secondary battery according to the present invention comprises a step wherein a negative electrode collector, which has a projection having a height of from 0.36 mm to 0.45 mm on at least one of a first member and a second member, said members constituting the negative electrode collector, is resistance-welded with a core multilayer part in such a manner that the core multilayer part is sandwiched between the first member and the second member, while having the projection in contact with the core multilayer part.Type: ApplicationFiled: July 1, 2020Publication date: September 15, 2022Inventors: Tomoharu ARAI, Shinichirou YOSHIDA, Tetsuya OKADO, Masashi MURAOKA, Atsushi MIYAZAKI
-
Patent number: 10593922Abstract: A battery pack includes a plurality of prismatic secondary batteries with spacers each interposed therebetween. The prismatic secondary batteries each include a flat wound electrode body that is formed by winding a positive electrode plate and a negative electrode plate with a separator interposed therebetween; a prismatic outer body that houses the wound electrode body; and a sealing plate that seals an opening of the flat wound electrode body. The wound electrode body has a wound positive electrode core-exposed portion at one end portion and a wound negative electrode core-exposed portion at the other end portion. A positive electrode current collector is joined to the positive electrode core-exposed portion to form a positive electrode-joined portion, and a negative electrode current collector is joined to the negative electrode core-exposed portion to form a negative electrode-joined portion.Type: GrantFiled: December 21, 2017Date of Patent: March 17, 2020Assignee: SANYO Electric Co., Ltd.Inventors: Tetsuya Okado, Keisuke Minami, Masashi Muraoka, Tomoharu Arai, Toyoki Fujihara
-
Patent number: 10511007Abstract: A nonaqueous electrolyte secondary battery including a positive electrode collector electrically connected to a positive electrode plate, a negative electrode collector electrically connected to a negative electrode plate. At least one of the collectors includes a first-side base portion disposed near the sealing plate, and a first-side lead portion connected to one end portion of the first-side base portion and extending towards an electrode body. The first-side lead portion includes a first-side power generating element joining portion joined to a lateral side of the electrode body, and a first-side inclined portion inclined with respect to a thickness direction of the electrode body from the first-side power generating element joining portion towards an outer side in the thickness direction. A total weight of the electrode body and nonaqueous electrolyte contained in the electrode body ranges from 200 g or more to 500 g or less.Type: GrantFiled: August 23, 2017Date of Patent: December 17, 2019Assignee: SANYO Electric Co., Ltd.Inventors: Masashi Muraoka, Tomoharu Arai, Tetsuya Okado, Shingo Tode, Toyoki Fujihara
-
Patent number: 10217973Abstract: A prismatic secondary battery includes a first current collector and a second current collector. The first current collector includes a first base disposed along a sealing plate. The second current collector includes a second base disposed along the sealing plate. A distance between an end portion of a wound electrode body facing the sealing plate and a surface of the first base facing the wound electrode body at an end portion of the first base on a central side in the longitudinal direction of the sealing plate is shorter than a distance between the end portion of the wound electrode body facing the sealing plate and a surface of the second base facing the wound electrode body at an end portion of the second base on the central side. An insulating buffer is disposed between the wound electrode body and the above surface of the first base.Type: GrantFiled: September 21, 2017Date of Patent: February 26, 2019Assignee: SANYO Electric Co., Ltd.Inventors: Tomoharu Arai, Tetsuya Okado, Shinichirou Yoshida, Masashi Muraoka, Toyoki Fujihara
-
Patent number: 10181624Abstract: The present invention provides a metal-air battery, wherein a failure in a wiring portion can be repaired easily. The present invention provides a metal electrode cartridge including a first operation portion and a first insertion portion extended from the first operation portion, wherein the first insertion portion includes a first fuel electrode containing a metal serving as an electrode active material, the first operation portion includes a first fuel electrode terminal electrically connected to the first fuel electrode and a first air electrode connection portion, and the first air electrode connection portion includes a first internal connection terminal and a first external connection terminal.Type: GrantFiled: July 22, 2014Date of Patent: January 15, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Masaki Kaga, Akihito Yoshida, Hirotaka Mizuhata, Shinobu Takenaka, Masashi Muraoka, Shunsuke Sata, Tomoharu Arai
-
Publication number: 20180269449Abstract: A battery pack includes a plurality of prismatic secondary batteries with spacers each interposed therebetween. The prismatic secondary batteries each include a flat wound electrode body that is formed by winding a positive electrode plate and a negative electrode plate with a separator interposed therebetween; a prismatic outer body that houses the wound electrode body; and a sealing plate that seals an opening of the flat wound electrode body. The wound electrode body has a wound positive electrode core-exposed portion at one end portion and a wound negative electrode core-exposed portion at the other end portion. A positive electrode current collector is joined to the positive electrode core-exposed portion to form a positive electrode-joined portion, and a negative electrode current collector is joined to the negative electrode core-exposed portion to form a negative electrode-joined portion.Type: ApplicationFiled: December 21, 2017Publication date: September 20, 2018Applicant: SANYO Electric Co., Ltd.Inventors: Tetsuya Okado, Keisuke Minami, Masashi Muraoka, Tomoharu Arai, Toyoki Fujihara
-
Publication number: 20180097206Abstract: A prismatic secondary battery includes a first current collector and a second current collector. The first current collector includes a first base disposed along a sealing plate. The second current collector includes a second base disposed along the sealing plate. A distance between an end portion of a wound electrode body facing the sealing plate and a surface of the first base facing the wound electrode body at an end portion of the first base on a central side in the longitudinal direction of the sealing plate is shorter than a distance between the end portion of the wound electrode body facing the sealing plate and a surface of the second base facing the wound electrode body at an end portion of the second base on the central side. An insulating buffer is disposed between the wound electrode body and the above surface of the first base.Type: ApplicationFiled: September 21, 2017Publication date: April 5, 2018Applicant: SANYO ELECTRIC CO., LTD.Inventors: Tomoharu Arai, Tetsuya Okado, Shinichirou Yoshida, Masashi Muraoka, Toyoki Fujihara
-
Publication number: 20180097219Abstract: A nonaqueous electrolyte secondary battery including a positive electrode collector electrically connected to a positive electrode plate, a negative electrode collector electrically connected to a negative electrode plate. At least one of the collectors includes a first-side base portion disposed near the sealing plate, and a first-side lead portion connected to one end portion of the first-side base portion and extending towards an electrode body. The first-side lead portion includes a first-side power generating element joining portion joined to a lateral side of the electrode body, and a first-side inclined portion inclined with respect to a thickness direction of the electrode body from the first-side power generating element joining portion towards an outer side in the thickness direction. A total weight of the electrode body and nonaqueous electrolyte contained in the electrode body ranges from 200 g or more to 500 g or less.Type: ApplicationFiled: August 23, 2017Publication date: April 5, 2018Applicant: Sanyo Electric Co., Ltd.Inventors: Masashi Muraoka, Tomoharu Arai, Tetsuya Okado, Shingo Tode, Toyoki Fujihara
-
Patent number: 9893397Abstract: The present invention provides a metal-air cell that allows pieces of an electrode active material that have fallen off to contribute to a discharge reaction and thus has high power generation efficiency. The metal-air cell according to the present invention includes an electrolyte cell containing an electrolyte, a metal electrode disposed in the electrolyte cell and serving as an anode, and an air electrode serving as a cathode. The metal electrode includes a current collector and an electrode active material part disposed on the current collector and made of an electrode active material. The current collector includes a supporting part supporting the electrode active material part and a receiving part disposed between a bottom of the electrolyte cell and the electrode active material part. The receiving part includes a projection projecting in the electrolyte cell beyond a side surface of the electrode active material part toward a sidewall of the electrolyte cell.Type: GrantFiled: July 11, 2013Date of Patent: February 13, 2018Assignee: Sharp Kabushiki KaishaInventors: Akihito Yoshida, Masaki Kaga, Tomoharu Arai, Hirotaka Mizuhata
-
Patent number: 9742048Abstract: The invention provides a metal-air battery in which a metallic electrode can be smoothly inserted into a metal-air battery main body. The metal-air battery of the invention includes at least one cell. The cell includes an electrolytic tank that stores an electrolytic solution, a metallic electrode that is provided in the electrolytic tank and serves as an anode, at least one air electrode that serves as a cathode, an electrode insertion opening through which the metallic electrode is inserted into the electrolytic tank, and a position adjustment section. The position adjustment section is provided to adjust a position of the metallic electrode through contact between the metallic electrode and the position adjustment section during insertion of the metallic electrode into the electrolytic tank.Type: GrantFiled: February 25, 2014Date of Patent: August 22, 2017Assignee: SHARP KABUSHIKI KAISHAInventors: Akihito Yoshida, Hirotaka Mizuhata, Masaki Kaga, Tomoharu Arai
-
Patent number: 9705164Abstract: The present invention has been achieved to provide a metal-air battery that allows removal of a metallic compound without suspending power supply. The metal-air battery of the present invention includes: first and second electrolytic tanks for storing an electrolytic solution; a metallic electrode to serve as an anode provided in the first electrolytic tank; and an air electrode to serve as a cathode, wherein the metallic electrode is formed of a metal which becomes a metallic ion or composes a metallic compound in the electrolytic solution with progress of a battery reaction, the first and second electrolytic tanks are communicated with each other for allowing the electrolytic solution in the first electrolytic tank to move into the second electrolytic tank, and the metallic ion or the metallic compound in the electrolytic solution is precipitated as a metallic compound precipitate in the second electrolytic tank.Type: GrantFiled: April 15, 2013Date of Patent: July 11, 2017Assignee: Sharp Kabushiki KaishaInventors: Akihito Yoshida, Hirotaka Mizuhata, Tomohisa Yoshie, Masaki Kaga, Shinobu Takenaka, Tomoharu Arai
-
Patent number: 9518590Abstract: It is an object of the invention to provide a motor-driven compressor being fixable reliably to a vehicle or the like and being capable of reliably protecting elements accommodated in a housing even upon reception of an external force due to a collision by any possibility. A motor-driven compressor of the invention comprises a compression mechanism for compressing fluid, an electric motor for driving the compression mechanism, a motor drive circuit for driving the electric motor, and a housing. The housing accommodates the compression mechanism, the electric motor, and the motor drive circuit. A cover for protecting the housing from an external force caused by a collision is fixed to the outside of the housing. The cover is arranged via a clearance with respect to the housing, and absorbs the external force applied to the cover by the clearance.Type: GrantFiled: June 28, 2013Date of Patent: December 13, 2016Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Tomoharu Arai, Tatsuya Ito, Ken Suitou
-
Publication number: 20160172728Abstract: The present invention provides a metal-air battery, wherein a failure in a wiring portion can be repaired easily. The present invention provides a metal electrode cartridge including a first operation portion and a first insertion portion extended from the first operation portion, wherein the first insertion portion includes a first fuel electrode containing a metal serving as an electrode active material, the first operation portion includes a first fuel electrode terminal electrically connected to the first fuel electrode and a first air electrode connection portion, and the first air electrode connection portion includes a first internal connection terminal and a first external connection terminal.Type: ApplicationFiled: July 22, 2014Publication date: June 16, 2016Inventors: Masaki KAGA, Akihito YOSHIDA, Hirotaka MIZUHATA, Shinobu TAKENAKA, Masashi MURAOKA, Shunsuke SATA, Tomoharu ARAI
-
Publication number: 20160020498Abstract: The invention provides a metal-air battery in which a metallic electrode can be smoothly inserted into a metal-air battery main body. The metal-air battery of the invention includes at least one cell. The cell includes an electrolytic tank that stores an electrolytic solution, a metallic electrode that is provided in the electrolytic tank and serves as an anode, at least one air electrode that serves as a cathode, an electrode insertion opening through which the metallic electrode is inserted into the electrolytic tank, and a position adjustment section. The position adjustment section is provided to adjust a position of the metallic electrode through contact between the metallic electrode and the position adjustment section during insertion of the metallic electrode into the electrolytic tank.Type: ApplicationFiled: February 25, 2014Publication date: January 21, 2016Inventors: Akihito YOSHIDA, Hirotaka MIZUHATA, Masaki KAGA, Tomoharu ARAI
-
Publication number: 20150214591Abstract: The present invention provides a metal-air cell that allows pieces of an electrode active material that have fallen off to contribute to a discharge reaction and thus has high power generation efficiency. The metal-air cell according to the present invention includes an electrolyte cell containing an electrolyte, a metal electrode disposed in the electrolyte cell and serving as an anode, and an air electrode serving as a cathode. The metal electrode includes a current collector and an electrode active material part disposed on the current collector and made of an electrode active material. The current collector includes a supporting part supporting the electrode active material part and a receiving part disposed between a bottom of the electrolyte cell and the electrode active material part. The receiving part includes a projection projecting in the electrolyte cell beyond a side surface of the electrode active material part toward a sidewall of the electrolyte cell.Type: ApplicationFiled: July 11, 2013Publication date: July 30, 2015Inventors: Akihito Yoshida, Masaki Kaga, Tomoharu Arai, Hirotaka Mizuhata
-
Publication number: 20140003973Abstract: It is an object of the invention to provide a motor-driven compressor being fixable reliably to a vehicle or the like and being capable of reliably protecting elements accommodated in a housing even upon reception of an external force due to a collision by any possibility. A motor-driven compressor of the invention comprises a compression mechanism for compressing fluid, an electric motor for driving the compression mechanism, a motor drive circuit for driving the electric motor, and a housing. The housing accommodates the compression mechanism, the electric motor, and the motor drive circuit. A cover for protecting the housing from an external force caused by a collision is fixed to the outside of the housing. The cover is arranged via a clearance with respect to the housing, and absorbs the external force applied to the cover by the clearance.Type: ApplicationFiled: June 28, 2013Publication date: January 2, 2014Inventors: Tomoharu Arai, Tatsuya Ito, Ken Suitou
-
Publication number: 20130280623Abstract: The present invention has been achieved to provide a metal-air battery that allows removal of a metallic compound without suspending power supply. The metal-air battery of the present invention includes: first and second electrolytic tanks for storing an electrolytic solution; a metallic electrode to serve as an anode provided in the first electrolytic tank; and an air electrode to serve as a cathode, wherein the metallic electrode is formed of a metal which becomes a metallic ion or composes a metallic compound in the electrolytic solution with progress of a battery reaction, the first and second electrolytic tanks are communicated with each other for allowing the electrolytic solution in the first electrolytic tank to move into the second electrolytic tank, and the metallic ion or the metallic compound in the electrolytic solution is precipitated as a metallic compound precipitate in the second electrolytic tank.Type: ApplicationFiled: April 15, 2013Publication date: October 24, 2013Applicant: Sharp Kabushiki KaishaInventors: Akihito YOSHIDA, Hirotaka MIZUHATA, Tomohisa YOSHIE, Masaki KAGA, Shinobu TAKENAKA, Tomoharu ARAI
-
Publication number: 20100022104Abstract: An electrical connecting apparatus comprises a housing having a first recess extending in a first direction in a plane parallel to a board having a conductive portion to be connected to an electrode of a device under test and opened downward and a plurality of slits spaced in the first direction and extending in a second direction intersecting the first direction in the plane, wherein each slit communicates at one end portion in its longitudinal direction with the first recess and is opened at least upward, a plurality of plate-shaped contacts each electrically connecting the conductive portion to the electrode, having on the tip end side of the contact a tip end thrust to the electrode and a curved external surface, and arranged in the housing in a state of extending inside the slit from within the first recess with the external surface being on the lower side, and a probe holder arranged in the first recess and abutting on a part opposite the external surface of the contact so as to contact the external surType: ApplicationFiled: September 18, 2007Publication date: January 28, 2010Inventors: Eichi Osato, Fukuhito Shinma, Tomoharu Arai
-
Patent number: 7278938Abstract: A power transmission device includes a first one-way clutch that transmits a rotational power of a pulley to a rotating shaft, and a second one-way clutch that transmits a rotational power of a rotor of a motor to the rotating shaft. The first one-way clutch is of inner cam type in which an engagement cam-surface is formed in an outer periphery of a first inner ring, while the second one-way clutch is of outer cam type in which an engagement cam-surface is formed in an inner periphery of a second outer ring. This arrangement improves engagement performance of the first one-way clutch as well as reducing heat generation of the second one-way clutch, so that the lifetime of grease is prolonged.Type: GrantFiled: February 26, 2004Date of Patent: October 9, 2007Assignee: Koyo Seiko Co., Ltd.Inventors: Takahiro Ichihara, Hajime Watanabe, Hideki Fujiwara, Minoru Mera, Taku Adaniya, Akinobu Kanai, Naoki Usui, Tomoharu Arai