Patents by Inventor Kazuhito Hatta
Kazuhito Hatta 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: 20080254348Abstract: A battery pack includes a non-aqueous electrolyte secondary battery, a rigid covering member, and a protection circuit board. The secondary battery includes a battery element and a flexible covering member formed of a first laminated film composed of a first heat-bonding layer, a first metal layer, and a first outer covering layer laminated successively. The flexible covering member is sealed along around the battery element while leaving electrode terminals of the positive and negative electrodes extended outside the battery element. The rigid covering member is formed of a second laminated film composed of a second heat-bonding layer, a second metal layer, and a second outer covering layer laminated successively. The flexible covering member and the rigid covering member are bonded with an adhesive strength equal to or higher than atmospheric pressure and with a peel strength equal to or lower than a breaking strength of the flexible covering member.Type: ApplicationFiled: April 10, 2008Publication date: October 16, 2008Applicant: SONY CORPORATIONInventors: Kazuhito Hatta, Masato Sato, Hiroyuki Yamada, Takehiko Suwa, Toshio Koishikawa
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Patent number: 7396613Abstract: A battery pack is provided. The battery device is accommodated and hermetically sealed in a packaging unit and is packed along with a connection substrate and a frame by the packaging unit. A laminated material used for hermetically sealing the battery device is also used as an exterior material for the battery pack.Type: GrantFiled: November 8, 2006Date of Patent: July 8, 2008Assignee: Sony CorporationInventors: Masaru Hiratsuka, Mitsuo Sakamoto, Takao Sawaguchi, Kazuhito Hatta
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Patent number: 7348762Abstract: A battery element is housed and sealed in a package body, and further, packed together with a connecting board and a frame by the package body. A laminate material for sealing the battery element is used as an outer package material of a battery pack. Thus, the increase of volume for the pack is reduced as much as possible.Type: GrantFiled: April 29, 2004Date of Patent: March 25, 2008Assignee: Sony CorporationInventors: Masaru Hiratsuka, Mitsuo Sakamoto, Takao Sawaguchi, Kazuhito Hatta, Hiroyuki Yamada
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Publication number: 20070287063Abstract: By using a DI molding method or a roll forming method, a casing member made of a thin cylindrical metal pipe is formed and molded so as to almost coincide with a shape of a battery element, thereby forming an outer casing. A power generating element to which a circuit board has been connected is enclosed in the outer casing and opening portions of the outer casing are closed by a front cap and a rear cap formed by, for example, a resin molding, thereby forming a battery pack. The power generating element is used by externally covering the battery element with a laminate film or the battery element is enclosed as it is into the outer casing. To suppress the penetration of the moisture into the battery, it is also possible to mix a moisture trapper for absorbing the moisture into a resin material of the front cap and rear cap and suppress the penetration of the moisture.Type: ApplicationFiled: July 22, 2005Publication date: December 13, 2007Inventors: Masaru Hiratsuka, Mitsuo Sakamoto, Kazuhito Hatta, Kenji Tsuchiya, Ken Segawa, Masato Sato, Akira Ichihashi, Kazuo Honda
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Patent number: 7297441Abstract: A nonaqueous-electrolyte battery which is capable of preventing introduction of water and deterioration in the capacity thereof is disclosed. The nonaqueous-electrolyte battery according to the present invention incorporates a case constituted by laminated films; and a unit cell which is accommodated in the case and having a structure that the peripheries of the case is sealed with heat, wherein when an assumption is made that the quantity of water capable of penetrating a heat-weld resin layer which is the innermost layer of the case having a thickness of T (?m) is R (g/m2·day), the cross sectional area of resin in a heat-sealed portion is S (cm2), an average width of the heat-sealed portion is W (cm) and the capacity of the unit cell is C (Wh), the following relationship is satisfied: (T×R×S)/(W×C)?0.96 ?g/Wh·day. When the foregoing structure is employed, water introducing rate can be reduced to 350 ?g/year or lower per capacity (Wh).Type: GrantFiled: September 4, 2003Date of Patent: November 20, 2007Assignee: Sony CorporationInventors: Kazuhito Hatta, Tsuyonobu Hatazawa, Tomitaro Hara
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Publication number: 20070207379Abstract: An external packaging material for covering a battery device is provided. The packaging material includes a laminated film having a laminated structure having two or more resin film layers stacked. In the external packaging material, the laminated structure has no metallic foil, and at least one layer in the resin film layers contains a moisture absorbing material.Type: ApplicationFiled: March 1, 2007Publication date: September 6, 2007Applicant: Sony CorporationInventors: Kazuhito Hatta, Masato Sato
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Publication number: 20070128513Abstract: A battery pack is provided.Type: ApplicationFiled: December 1, 2006Publication date: June 7, 2007Applicant: Sony CorporationInventors: Kazuhito Hatta, Masato Sato, Tsuyoshi Sugiyama, Hiroyuki Yamada, Koji Sakai, Norio Mamada, Takeru Yamamoto, Kazuo Honda
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Publication number: 20070059595Abstract: In a polymer electrolyte battery including a battery element having a cathode and an anode coiled through a polymer electrolyte, a section of the battery element perpendicular to the coiling axis has a curved form. As compared with a polymer electrolyte battery having a flat plate type battery element curved, the former battery has an extremely low possibility of short-circuit at the end of an electrode and excellent battery characteristics.Type: ApplicationFiled: November 2, 2006Publication date: March 15, 2007Applicant: Sony CorporationInventors: Takahiro Endo, Koichiro Kezuka, Kazuhito Hatta, Takayuki Kondo
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Patent number: 7166389Abstract: A battery pack is provided. The battery device is accommodated and hermetically sealed in a packaging unit and is packed along with a connection substrate and a frame by the packaging unit. A laminated material used for hermetically sealing the battery device is also used as an exterior material for the battery pack.Type: GrantFiled: September 17, 2003Date of Patent: January 23, 2007Assignee: Sony CorporationInventors: Masaru Hiratsuka, Mitsuo Sakamoto, Takao Sawaguchi, Kazuhito Hatta
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Patent number: 7163762Abstract: In a polymer electrolyte battery including a battery element having a cathode and an anode coiled through a polymer electrolyte, a section of the battery element perpendicular to the coiling axis has a curved form. As compared with a polymer electrolyte battery having a flat plate type battery element curved, the former battery has an extremely low possibility of short-circuit at the end of an electrode and excellent battery characteristics.Type: GrantFiled: November 21, 2001Date of Patent: January 16, 2007Assignee: Sony CorporationInventors: Takahiro Endo, Koichiro Kezuka, Kazuhito Hatta, Takayuki Kondo
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Publication number: 20060283008Abstract: A battery element is housed and sealed in a package body, and further, packed together with a connecting board and a frame by the package body. A laminate material for sealing the battery element is used as an outer package material of a battery pack. Thus, the increase of volume for the pack is reduced as much as possible.Type: ApplicationFiled: August 25, 2006Publication date: December 21, 2006Inventors: Masaru Hiratsuka, Mitsuo Sakamoto, Takao Sawaguchi, Kazuhito Hatta, Hiroyuki Yamada
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Publication number: 20060127760Abstract: A highly safety cell is provided in which short-circuiting is unlikely to occur. In order to prevent short-circuiting, for example, burrs generated when a laminate film used as an exterior packaging material is cut are prevented from penetrating an interior resin layer of the laminate film. When an electrode terminal extension side of the laminate film is thermal welded, heating and compression are performed by a heater head on a part of the laminate film apart from the edge portion thereof so that the thickness of the above edge portion is larger than that of a thermal welded portion. In addition, thermal welding is performed so that the thickness of a thermal welded portion including an electrode terminal is larger than that of a thermal welded portion including no electrode terminal, and as a result, short-circuiting can be more effectively prevented.Type: ApplicationFiled: November 29, 2005Publication date: June 15, 2006Inventors: Kazuhito Hatta, Mashio Shibuya
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Publication number: 20050017678Abstract: A battery element is housed and sealed in a package body, and further, packed together with a connecting board and a frame by the package body. A laminate material for sealing the battery element is used as an outer package material of a battery pack. Thus, the increase of volume for the pack is reduced as much as possible.Type: ApplicationFiled: April 29, 2004Publication date: January 27, 2005Inventors: Masaru Hiratsuka, Mitsuo Sakamoto, Takao Sawaguchi, Kazuhito Hatta, Hiroyuki Yamada
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Publication number: 20040229120Abstract: Provided is a battery capable of preventing the entry of water even if a sealing width is reduced. A battery element comprising a cathode and an anode is accommodated in a film-shaped casing. The casing includes a metal layer, a resin layer disposed on a side of the metal layer closer to the battery element with an adhesive layer in between, and a resin layer disposed on a side of the metal layer opposite to the side where the resin layer is formed with an adhesive layer in between. The adhesive layer has a water vapor transmission rate of 800 g/m2·day or less for a thickness of 25 &mgr;m at 40° C. and 90% RH and a thickness of 10 &mgr;m or less. Thereby, even if the sealing width is reduced, the entry of water into the battery can be prevented.Type: ApplicationFiled: March 9, 2004Publication date: November 18, 2004Inventors: Kazuhito Hatta, Takahiro Endo, Tsuyonobu Hatazawa, Yuzuru Fukushima
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Publication number: 20040197646Abstract: A nonaqueous electrolyte battery that includes a unit cell and a battery case that encloses the unit cell. The battery case includes a laminate film that encloses the unit cells by heat welding at least a portion of the laminate film. Upon heat welding, the unit cell further includes a number of electrode terminal leads in which a portion of the electrical terminal leads extend from the battery case. A sealant layer is further applied to at least a portion of the electrode terminal leads so as to contact the battery case upon heat welding in order to further seal the case and to further prevent short circuiting of the nonaqueous-electrolyte battery.Type: ApplicationFiled: April 23, 2004Publication date: October 7, 2004Inventors: Kazuhito Hatta, Tsuyonobu Hatazawa, Tomitaro Hara
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Patent number: 6797430Abstract: A nonaqueous-electrolyte battery that includes a unit cell and a battery case that encloses the units. The battery case includes a laminate film that sealingly encloses the units by heat welding at least a portion of the laminate film. Upon heat welding, the unit cell further includes a number of electrode terminal leads in which a portion of the electrical terminal leads extend from the battery case. A sealant layer is further applied to at least a portion of the electrodeterminal leads so as to contact the battery case upon heat welding in order to further seal the case and to further prevent short circuiting of the nonaqueous-electrolyte battery.Type: GrantFiled: December 26, 2000Date of Patent: September 28, 2004Assignee: Sony CorporationInventors: Kazuhito Hatta, Tsuyonobu Hatazawa, Tomitaro Hara
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Publication number: 20040115527Abstract: A battery pack is provided. The battery device is accommodated and hermetically sealed in a packaging unit and is packed along with a connection substrate and a frame by the packaging unit. A laminated material used for hermetically sealing the battery device is also used as an exterior material for the battery pack.Type: ApplicationFiled: September 17, 2003Publication date: June 17, 2004Inventors: Masaru Hiratsuka, Mitsuo Sakamoto, Takao Sawaguchi, Kazuhito Hatta
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Publication number: 20040043290Abstract: A nonaqueous-electrolyte battery which is capable of preventing introduction of water and deterioration in the capacity thereof is disclosed. The nonaqueous-electrolyte battery according to the present invention incorporates a case constituted by laminated films; and a unit cell which is accommodated in the case and having a structure that the peripheries of the case is sealed with heat, wherein when an assumption is made that the quantity of water capable of penetrating a heat-weld resin layer which is the innermost layer of the case having a thickness of T (&mgr;m) is R (g/m2·day), the cross sectional area of resin in a heat-sealed portion is S (cm2), an average width of the heat-sealed portion is W (cm) and the capacity of the unit cell is C (Wh), the following relationship is satisfied: (T×R×S)/(W×C)≦0.96 &mgr;g/Wh·day. When the foregoing structure is employed, water introducing rate can be reduced to 350 &mgr;g/year or lower per capacity (Wh).Type: ApplicationFiled: September 4, 2003Publication date: March 4, 2004Inventors: Kazuhito Hatta, Tsuyonobu Hatazawa, Tomitaro Hara
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Publication number: 20030108787Abstract: In a polymer electrolyte battery including a battery element having a cathode and an anode coiled through a polymer electrolyte, a section of the battery element perpendicular to the coiling axis has a curved form. As compared with a polymer electrolyte battery having a flat plate type battery element curved, the former battery has an extremely low possibility of short-circuit at the end of an electrode and excellent battery characteristics.Type: ApplicationFiled: October 7, 2002Publication date: June 12, 2003Inventors: Takahiro Endo, Koichiro Kezuka, Kazuhito Hatta, Takayuki Kondo
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Patent number: 6368744Abstract: A nonaqueous electrolyte battery is disclosed which has an improved volume energy density and satisfactory impact resistance, a heat radiating characteristic and producibility. The battery element is accommodated in a casing constituted by a laminate film so as to be sealed by welding. Electrode-terminal leads electrically conducted to electrodes which constitute the battery element are sandwiched by welded portions so as to be exposed to the outside portion of the casing. A control circuit of the battery is mounted on a welded portion of the casing. Since the control circuit of the battery is mounted on the welded portion of the casing, the space in the battery in which the battery element is not present can effectively be used. Therefore, the volume efficiency can considerably be improved.Type: GrantFiled: November 16, 1999Date of Patent: April 9, 2002Assignee: Sony CorporationInventors: Tsuyonobu Hatazawa, Kazuhito Hatta, Tomitaro Hara, Takashi Ono, Kouji Watanabe