Patents by Inventor Yoshitaka Shinyashiki
Yoshitaka Shinyashiki 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: 20110244304Abstract: A stack type battery has a plurality of positive electrode plates (1), a plurality of negative electrode plates (2), and a separator (3) interposed therebetween. The positive electrode plates (1) and the negative electrode plates (2) are alternately stacked one on the other. The separator (3) has a heat-resistant layer (3R) having heat resistance and heat-melting layers (3M), each of the heat-melting layers (3M) having a shutdown function and a melting point lower than the melting point of the heat-resistant layer (3R) and disposed over the entire surface of each of both sides of the heat-resistant layer (3R). The heat-melting layers (3M) of the separator (3) are fixed to each other by thermal welding.Type: ApplicationFiled: March 21, 2011Publication date: October 6, 2011Applicant: SANYO ELECTRIC CO., LTD.Inventors: Yoshitaka Shinyashiki, Hitoshi Maeda, Atsuhiro Funahashi, Masayuki Fujiwara, Yuji Tani
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Publication number: 20110076545Abstract: A plurality of positive electrode plates (1) and a plurality of negative electrode plates are alternately stacked with separators interposed between the positive and negative electrodes. Positive electrode leads (11) and negative electrode leads extending outward from the respective electrode plates are respectively stacked on and joined to a positive electrode current collector terminal and a negative electrode current collector terminal to form a stack type battery. An incision (35) is formed in the positive electrode lead (11) so that a current (C11) passing through the lead (11) is branched into a plurality (two) of paths (D1, D2) by the incision (35), and the maximum current density of one (D1) of the plurality of paths (D1, D2) is equal to or greater 1.5 times of the maximum current density of the other path (D2).Type: ApplicationFiled: September 28, 2010Publication date: March 31, 2011Applicant: SANYO ELECTRIC CO., LTD.Inventors: Yoshitaka Shinyashiki, Hitoshi Maeda, Yoshito Kaga, Atsuhiro Funahashi, Masayuki Fujiwara
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Publication number: 20110076544Abstract: A stack type battery has a plurality of positive electrode plates (1) and a plurality of negative electrode plates (2), which are alternately stacked one on the other with separators (3) interposed therebetween. It also has positive electrode leads (11) and negative electrode leads (12) protruding from the respective electrode plates (1, 2) and being stacked and joined to a positive electrode current collector terminal (15) and a negative electrode current collector terminal (16), respectively. Peripheral portions of the separators that face each other across each of the positive electrode plates (1) are welded to form a pouch-type separator (3), and the positive electrode leads (11) are joined to each other at weld points (31W) in a region thereof facing the separator (3).Type: ApplicationFiled: September 29, 2010Publication date: March 31, 2011Applicant: SANYO ELECTRIC CO., LTD.Inventors: Hitoshi Maeda, Yoshitaka Shinyashiki, Masayuki Fujiwara, Atsuhiro Funahashi
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Publication number: 20110070477Abstract: A penetrating portion (15P) is provided partially at a location in a positive electrode current collector terminal (15) to which positive electrode lead tabs (11) (electrode plate lead tabs) are joined, to form a current-collector-terminal-absent region (penetrating portion (15P)) and a current-collector-terminal-present region that are aligned in a perpendicular direction (a widthwise direction) to a connection direction of the positive electrode lead tabs (11). Only the plurality of the positive electrode lead tabs (11) are joined at a center weld point (32M) (first joining spot) in the current-collector-terminal-absent region, and the positive electrode lead tabs (11) are joined to the positive electrode current collector terminal 15 at each of left-side and right-side weld points 32L and 32R (second joining spot) in the current-collector-terminal-present region.Type: ApplicationFiled: September 16, 2010Publication date: March 24, 2011Applicant: SANYO ELECTRIC CO., LTD.Inventors: Masayuki Fujiwara, Yoshitaka Shinyashiki, Hitoshi Maeda, Atsuhiro Funahashi
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Publication number: 20110023290Abstract: A battery module has a plurality of prismatic batteries (2) stacked in a thickness direction. Two plates (3, 4) are provided between each of the batteries (2), and each of the batteries (2) is compressed by shifting the two plates (3, 4) in directions away from each other. A pair of frame members (10, 20) having opposing surfaces (11, 21) extending along the stacking direction of the batteries (2) are disposed face to face so as to sandwich the batteries (2) in a direction perpendicular to the stacking direction of the batteries. Wedge-shaped spacers (12, 22) inserted between the two plates (3, 4) are provided respectively on the opposing surfaces. By narrowing the gap between the pair of frame members (10, 20), the spacers (12, 22) are allowed to advance inwardly between the two plates (3, 4) so that the two plates are shifted in directions away from each other, whereby the batteries are compressed.Type: ApplicationFiled: October 8, 2010Publication date: February 3, 2011Inventors: Yoshitaka Shinyashiki, Masayuki Fujiwara, Hitoshi Maeda, Atsuhiro Funahashi
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Patent number: 7704638Abstract: A power-generating element containing a stacked electrode assembly (10) and an electrolyte solution is disposed in an accommodating space of a plastic battery case (13). The entirety of the battery case (13) is enclosed air-tightly and liquid-tightly in an outer cover made of an aluminum laminate. An opening (13A) of the battery case (13) is sealed by sealing members (16a, 16b) disposed and melt-bonded so as to cover an opening (13A) of the battery case 13 and to sandwich current collectors (14, 15) of the power-generating element from both sides. The outer cover is sealed at at least a location corresponding to the opening (13A) of the battery case (13).Type: GrantFiled: May 29, 2008Date of Patent: April 27, 2010Assignee: SANYO Electric Co., Ltd.Inventors: Atsuhiro Funahashi, Masayuki Fujiwara, Hitoshi Maeda, Yoshitaka Shinyashiki
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Publication number: 20090246607Abstract: A laminate type battery includes a laminate battery case and an electrode assembly. The laminate battery case includes two laminate films each having a metal layer and plastic layers provided on both faces of the metal layer, and has a welded portion in which peripheral edges of the two laminate films are welded to each other. The electrode assembly is enclosed in the laminate battery case, and has a positive electrode plate, a negative electrode plate, and a separator disposed therebetween. An internal gas pressure sensing portion, in which the inner plastic layer of each of the laminate films is absent and the metal layers are in contact with each other so as to be in an electrically conductive state, is formed in a portion of the welded portion. A voltage detection hole, in which the outer plastic layer is absent and the metal layer is exposed, is formed in a surface of each of the two laminate films.Type: ApplicationFiled: March 24, 2009Publication date: October 1, 2009Applicant: SANYO ELECTRIC CO., LTD.Inventors: Yoshitaka SHINYASHIKI, Atsuhiro FUNAHASHI, Hitoshi MAEDA, Masayuki FUJIWARA
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Publication number: 20090197160Abstract: A stack type battery has a stacked electrode assembly (10) disposed in a reduced pressure condition in an accommodating space within a square-shaped laminate battery case (25) formed by melt-bonding peripheral edges of two laminate films (28) to each other. A positive electrode current collector terminal (15) is joined to positive electrode current collector tabs (11) being overlapped with each other, and a negative electrode current collector terminal (16) is joined to the negative electrode current collector tabs (12) being overlapped with each other. An insulative spacer (30) for compressing welded portions (36) between the positive and negative electrode current collector tabs (11, 12) and the positive and negative electrode current collector terminals (15, 16) is disposed in a tab-connecting space existing between the stacked electrode assembly (10) and an inner face of the laminate battery case (25) from which the positive and negative electrode current collector terminals (15, 16) protrude.Type: ApplicationFiled: February 2, 2009Publication date: August 6, 2009Applicant: SANYO ELECTRIC CO., LTD.Inventors: Masayuki FUJIWARA, Atsuhiro FUNAHASHI, Hitoshi MAEDA, Yoshitaka SHINYASHIKI
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Publication number: 20080299453Abstract: A battery module has a plurality of prismatic batteries (2) stacked in a thickness direction. Two plates (3, 4) are provided between each of the batteries (2), and each of the batteries (2) is compressed by shifting the two plates (3, 4) in directions away from each other. A pair of frame members (10, 20) having opposing surfaces (11, 21) extending along the stacking direction of the batteries (2) are disposed face to face so as to sandwich the batteries (2) in a direction perpendicular to the stacking direction of the batteries. Wedge-shaped spacers (12, 22) inserted between the two plates (3, 4) are provided respectively on the opposing surfaces. By narrowing the gap between the pair of frame members (10, 20), the spacers (12, 22) are allowed to advance inwardly between the two plates (3, 4) so that the two plates are shifted in directions away from each other, whereby the batteries are compressed.Type: ApplicationFiled: May 29, 2008Publication date: December 4, 2008Inventors: Yoshitaka Shinyashiki, Masayuki Fujiwara, Hitoshi Maeda, Atsuhiro Funahashi
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Publication number: 20080299451Abstract: A power-generating element containing a stacked electrode assembly (10) and an electrolyte solution is disposed in an accommodating space of a plastic battery case (13). The entirety of the battery case (13) is enclosed air-tightly and liquid-tightly in an outer cover made of an aluminum laminate. An opening (13A) of the battery case (13) is sealed by sealing members (16a, 16b) disposed and melt-bonded so as to cover an opening (13A) of the battery case 13 and to sandwich current collectors (14, 15) of the power-generating element from both sides. The outer cover is sealed at at least a location corresponding to the opening (13A) of the battery case (13).Type: ApplicationFiled: May 29, 2008Publication date: December 4, 2008Inventors: Atsuhiro Funahashi, Masayuki Fujiwara, Hitoshi Maeda, Yoshitaka Shinyashiki
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Publication number: 20080292950Abstract: A spacer (52) interposed between a plurality of batteries in a battery module has an inner cavity. A filling agent having fire-extinguishing capability is filled in the inner cavity. An opening can be formed at a portion (low-melting point portion (14)) of the spacer (52) by heat so that the filling agent can flow out of the spacer.Type: ApplicationFiled: May 27, 2008Publication date: November 27, 2008Applicant: SANYO ELECTRIC CO., LTD.Inventors: Hitoshi Maeda, Masayuki Fujiwara, Yoshitaka Shinyashiki, Atsuhiro Funahashi
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Patent number: 6534215Abstract: The present invention discloses a sintered cadmium negative electrode for use in an alkaline storage battery having a porous sintered nickel substrate and an active material containing cadmium hydroxide, the active material impregnated in the porous sintered nickel substrate, sintered cadmium negative electrode in which a groove 3 having a depth of 0.1 to 20 &mgr;m is provided on a surface of the substrate so that a projected region and a depressed region are formed on the surface of the substrate. An alkaline storage battery employing the sintered cadmium negative electrode of the invention achieves, as well as a high capacity, an improved large current charge-discharge characteristic by increasing an oxygen gas absorbing performance.Type: GrantFiled: March 10, 2000Date of Patent: March 18, 2003Assignee: Sanyo Electric Co., Ltd.Inventors: Yoshitaka Shinyashiki, Akira Hirakawa, Masahiro Hosoda