Patents by Inventor Yukio Ehara
Yukio Ehara 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).
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Publication number: 20210218052Abstract: A thread battery that includes: a thread-like first electrode that extends in a longitudinal direction between a first end and a second end that face each other in the longitudinal direction; a solid electrolyte on an outer peripheral surface of the first electrode; a second electrode on an outer peripheral surface of the solid electrolyte; a first current collector covering the first end, connected to the thread-like first electrode, and not connected to the second electrode; and a second current collector covering the second end, connected to the second electrode, and not connected to the first electrode.Type: ApplicationFiled: March 25, 2021Publication date: July 15, 2021Inventors: Kou Tanaka, Masahiko Kondo, Makoto Yoshioka, Yukio Ehara
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Publication number: 20210210780Abstract: A thread battery that includes: a thread-like solid electrolyte that extends in a longitudinal direction between a first end and a second end that face each other in the longitudinal direction; a first electrode on a first part of an outer peripheral surface of the solid electrolyte along the longitudinal direction; a second electrode on a second part of the outer peripheral surface of the solid electrolyte along the longitudinal direction, wherein the first electrode and the second electrode do not contact each other; a first current collector on an outer peripheral surface of the first electrode along the longitudinal direction; and a second current collector on an outer peripheral surface of the second electrode along the longitudinal direction.Type: ApplicationFiled: March 25, 2021Publication date: July 8, 2021Inventors: Kou Tanaka, Masahiko Kondo, Makoto Yoshioka, Yukio Ehara
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Patent number: 9793062Abstract: An electric storage device includes an electrolyte and an electric storage unit including a positive electrode including a positive-electrode collector electrode and a positive-electrode active-material layer disposed on the positive-electrode collector electrode; a negative electrode including a negative-electrode collector electrode and a negative-electrode active-material layer disposed on the negative-electrode collector electrode and facing the positive-electrode active-material layer; a first insulating layer bonded to the positive electrode and the negative electrode to isolate the positive electrode and the negative electrode from each other; and a region that is sealed with the first insulating layer in plan view and that holds the electrolyte between the positive electrode and the negative electrode, wherein an air permeability P of the first insulating layer satisfies the formula 1250 s/100 cc<P<95000 s/100 cc.Type: GrantFiled: December 19, 2013Date of Patent: October 17, 2017Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Masaharu Itaya, Keiji Horikawa, Manabu Sawada, Hiroyuki Harada, Yuusuke Ueba, Yukio Ehara, Yasuhiko Ueda, Yasutake Fukuda
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Patent number: 9728343Abstract: A highly-reliable electrical storage device element and electrical storage device, in each of which on predetermined regions of predetermined end surfaces of a laminate forming an electrical storage component, sprayed end surface electrodes each having a high bond strength to the laminate are provided.Type: GrantFiled: December 27, 2013Date of Patent: August 8, 2017Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Keiji Horikawa, Hiroki Horiguchi, Yukio Ehara, Yasuhiko Ueda, Hiroyuki Harada, Masaharu Itaya, Yasutake Fukuda, Shigeo Hayashi
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Patent number: 9514893Abstract: An electrical storage unit that includes a positive electrode, which includes a positive-electrode collector electrode and a positive-electrode active material layer on the positive-electrode collector electrode, a negative electrode, which includes a negative-electrode collector electrode and a negative-electrode active material layer on the negative-electrode collector electrode, the negative-electrode active material layer facing the positive-electrode active material layer, and a first insulating layer bonded to the positive electrode and the negative electrode and separating the positive electrode from the negative electrode. The first insulating layer is bonded to part of a surface of the positive electrode and part of a surface of the negative electrode and includes a communication path for connecting the outside of the electrical storage unit to the inside of the electrical storage unit.Type: GrantFiled: December 17, 2013Date of Patent: December 6, 2016Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Masaharu Itaya, Keiji Horikawa, Manabu Sawada, Hiroyuki Harada, Yuusuke Ueba, Yukio Ehara, Yasuhiko Ueda, Yasutake Fukuda
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Patent number: 9368776Abstract: A power storage device having: a laminated body formed by providing a separator layer between a first electrode which is one of a cathode and an anode and a second electrode which is the other electrode; an electrolyte; and a package which houses the laminated body and the electrolyte. At least two first electrode composite sheets are included which are each obtained by integrating a first collector electrode, a first electrode active material layer provided on one principal surface of the first collector electrode, and a separator layer covering at least part of the one principal surface, and the other principal surface of the first collector electrode of one first electrode composite sheet out of the at least two first electrode composite sheets is opposed to, and bonded to, the other principal surface of the first collector electrode of the other first electrode composite sheet.Type: GrantFiled: December 28, 2012Date of Patent: June 14, 2016Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Keiji Horikawa, Yukio Ehara, Masaharu Itaya, Yasutake Fukuda, Manabu Sawada, Hiroyuki Harada, Yuusuke Ueba, Yasuhiko Ueda
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Publication number: 20140134487Abstract: An electric storage device includes an electrolyte and an electric storage unit including a positive electrode including a positive-electrode collector electrode and a positive-electrode active-material layer disposed on the positive-electrode collector electrode; a negative electrode including a negative-electrode collector electrode and a negative-electrode active-material layer disposed on the negative-electrode collector electrode and facing the positive-electrode active-material layer; a first insulating layer bonded to the positive electrode and the negative electrode to isolate the positive electrode and the negative electrode from each other; and a region that is sealed with the first insulating layer in plan view and that holds the electrolyte between the positive electrode and the negative electrode, wherein an air permeability P of the first insulating layer satisfies the formula 1250 s/100 cc<P<95000 s/100 cc.Type: ApplicationFiled: December 19, 2013Publication date: May 15, 2014Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Masaharu Itaya, Keiji Horikawa, Manabu Sawada, Hiroyuki Harada, Yuusuke Ueba, Yukio Ehara, Yasuhiko Ueda, Yasutake Fukuda
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Publication number: 20140106191Abstract: An electrical storage unit that includes a positive electrode, which includes a positive-electrode collector electrode and a positive-electrode active material layer on the positive-electrode collector electrode, a negative electrode, which includes a negative-electrode collector electrode and a negative-electrode active material layer on the negative-electrode collector electrode, the negative-electrode active material layer facing the positive-electrode active material layer, and a first insulating layer bonded to the positive electrode and the negative electrode and separating the positive electrode from the negative electrode. The first insulating layer is bonded to part of a surface of the positive electrode and part of a surface of the negative electrode and includes a communication path for connecting the outside of the electrical storage unit to the inside of the electrical storage unit.Type: ApplicationFiled: December 17, 2013Publication date: April 17, 2014Applicant: Murata Manufacturing Co., Ltd.Inventors: Masaharu Itaya, Keiji Horikawa, Manabu Sawada, Hiroyuki Harada, Yuusuke Ueba, Yukio Ehara, Yasuhiko Ueda, Yasutake Fukuda
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Publication number: 20140106213Abstract: A highly-reliable electrical storage device element and electrical storage device, in each of which on predetermined regions of predetermined end surfaces of a laminate forming an electrical storage component, sprayed end surface electrodes each having a high bond strength to the laminate are provided.Type: ApplicationFiled: December 27, 2013Publication date: April 17, 2014Applicant: Murata Manufacturing Co., Ltd.Inventors: Keiji Horikawa, Hiroki Horiguchi, Yukio Ehara, Yasuhiko Ueda, Hiroyuki Harada, Masaharu Itaya, Yasutake Fukuda, Shigeo Hayashi
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Publication number: 20050270847Abstract: To provide a high reliability, low cost battery capable of starting discharging or bypassing a charging current in case of overcharge and preventing the battery from becoming unusable. In a battery having a negative terminal attached to a conductive cover plate with an insulator between them, an N-channel field effect transistor is connected between the negative terminal and the cover plate, a source electrode of the N-channel field effect transistor is connected between the negative terminal and the insulator, and a common electrode (drain electrode and gate electrode) is connected to the cover plate.Type: ApplicationFiled: May 4, 2005Publication date: December 8, 2005Applicants: Sanyo Electric Co., Ltd., Sanyo GS Soft Energy Co., Ltd.Inventors: Motohiro Miyoshi, Yukio Ehara
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Patent number: 6936374Abstract: The battery pack of the invention comprises an outer case, a battery main body disposed within the outer case, and a heat-sensitive current blocking element mounted on the outer surface of the battery main body. On the inner surface of the outer case is provided a press portion for pressing the heat-sensitive current blocking element against the outer surface of the battery main body. In this arrangement, even when the battery pack is given vibration or impact, the heat-sensitive current blocking element can be kept retained in close contact with the outer surface of the battery main body. Accordingly, the heat generated in the battery main body can be rapidly and surely transferred to the heat-sensitive current blocking element, making sure that thermal runaway of the battery is prevented.Type: GrantFiled: April 9, 2002Date of Patent: August 30, 2005Assignee: GS-Melcotec Co., Ltd.Inventor: Yukio Ehara
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Patent number: 6808844Abstract: A battery pack adapted to be connected to an external circuit includes a battery case in which a power generating element is enclosed, the battery case having at least one side, a cover covering the side of the battery case so that a component disposing space is defined between the battery case and the cover, a circuit element disposed in the component disposing space and connected to the power generating element, and a terminal disposed in the component disposing space and connected both to the power generating element and via the cover to the external circuit.Type: GrantFiled: March 27, 2002Date of Patent: October 26, 2004Assignee: GS-Melcotec Co., Ltd.Inventor: Yukio Ehara
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Publication number: 20020182481Abstract: The battery comprises a battery main body provided with a pair of positive and negative terminals, a pair of external positive and negative terminals for connecting the pair of positive and negative terminals to an external apparatus, and a protective element provided interposed between the terminals and the external terminals, wherein the protective element is composed of a passive element alone and comprises a thermal cut-off. Further, the resistance R across the pair of external terminals is predetermined to be always greater than Vt/It. In this arrangement, in the case of a weak external shortcircuiting causing no battery performance deterioration, burst and ignition, the thermal cut-off can be prevented from blowing to impair the battery performance. Since proper protection of the battery is realized by the use of an inexpensive passive element alone, the production cost of the battery can be reduced.Type: ApplicationFiled: May 29, 2002Publication date: December 5, 2002Applicant: GS-MELCOTEC CO., LTD.Inventor: Yukio Ehara
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Publication number: 20020150815Abstract: The battery pack of the invention comprises an outer case, a battery main body disposed within the outer case, and a heat-sensitive current blocking element mounted on the outer surface of the battery main body. On the inner surface of the outer case is provided a press portion for pressing the heat-sensitive current blocking element against the outer surface of the battery main body. In this arrangement, even when the battery pack is given vibration or impact, the heat-sensitive current blocking element can be kept retained in close contact with the outer surface of the battery main body. Accordingly, the heat generated in the battery main body can be rapidly and surely transferred to the heat-sensitive current blocking element, making sure that thermal runaway of the battery is prevented.Type: ApplicationFiled: April 9, 2002Publication date: October 17, 2002Applicant: GS-MELCOTEC CO., LTD.Inventor: Yukio Ehara
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Publication number: 20020142195Abstract: A battery pack adapted to be connected to an external circuit includes a battery case in which a power generating element is enclosed, the battery case having at least one side, a cover covering the side of the battery case so that a component disposing space is defined between the battery case and the cover, a circuit element disposed in the component disposing space and connected to the power generating element, and a terminal disposed in the component disposing space and connected both to the power generating element and via the cover to the external circuit.Type: ApplicationFiled: March 27, 2002Publication date: October 3, 2002Inventor: Yukio Ehara
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Publication number: 20020132160Abstract: The invention lies in a battery comprising a battery container closed at one end thereof, an electric-generating element received in the battery container, and a cover body covering the opening of the battery container. The cover body has an indented portion formed on the outer side thereof extending inward and a valve disposed on the inner wall of the indented portion for releasing the inner pressure of the battery. The battery of the invention comprises a valve disposed on the deep side of the indented portion for releasing the inner pressure of the battery. In this arrangement, any foreign matters which hit the area of the cover body close to the indented portion cannot enter into the indented portion. Even foreign matters which could have entered into the indented portion, it is difficult to reach the side wall of the indented portion. Accordingly, it is less likely that foreign matters can come in direct contact with the valve.Type: ApplicationFiled: March 18, 2002Publication date: September 19, 2002Applicant: GS-MELCOTEC CO. LTD.Inventor: Yukio Ehara