Patents by Inventor Shingo Tode
Shingo Tode 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: 20220384854Abstract: A secondary battery configured so as to comprise: a plurality of positive electrodes each including a positive electrode core and a positive electrode active substance disposed on the positive electrode core; a plurality of negative electrodes each including a negative electrode core and a negative electrode active substance disposed upon the negative electrode core; at least one separator; and an adhesive coated so as to have a substantially constant area density on at least one side surface in the thickness direction of the separator. The secondary battery includes a laminated section in which the positive electrodes and the negative electrodes are alternately stacked, having the separator therebetween. The area of adhered sections adhered by the adhesive is greater on the outside in the lamination direction of the laminated section than on the inside in the lamination direction.Type: ApplicationFiled: December 15, 2020Publication date: December 1, 2022Applicant: SANYO Electric Co., Ltd.Inventors: Atsushi Kawamura, Daiki Watanabe, Yu Matsui, Shingo Tode
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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
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Patent number: 10431827Abstract: A non-aqueous electrolyte secondary battery includes a pressure-sensitive current shut-off mechanism, wherein a positive electrode core body exposed portion is disposed at one end portion of a flat rolled electrode assembly, a negative electrode core body exposed portion is disposed at the other end portion, lithium carbonate is contained in a positive electrode mix layer, and a protective layer is disposed along the border with the positive electrode mix layer at the position opposite to a separator on the positive electrode core body exposed portion.Type: GrantFiled: August 14, 2018Date of Patent: October 1, 2019Assignee: SANYO ELECTRIC CO., LTD.Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
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Publication number: 20180358623Abstract: A non-aqueous electrolyte secondary battery includes a pressure-sensitive current shut-off mechanism, wherein a positive electrode core body exposed portion is disposed at one end portion of a flat rolled electrode assembly, a negative electrode core body exposed portion is disposed at the other end portion, lithium carbonate is contained in a positive electrode mix layer, and a protective layer is disposed along the border with the positive electrode mix layer at the position opposite to a separator on the positive electrode core body exposed portion.Type: ApplicationFiled: August 14, 2018Publication date: December 13, 2018Applicant: SANYO Electric Co., Ltd.Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
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Patent number: 10079386Abstract: A non-aqueous electrolyte secondary battery includes a pressure-sensitive current shut-off mechanism, wherein a positive electrode core body exposed portion is disposed at one end portion of a flat rolled electrode assembly, a negative electrode core body exposed portion is disposed at the other end portion, lithium carbonate is contained in a positive electrode mix layer, and a protective layer is disposed along the border with the positive electrode mix layer at the position opposite to a separator on the positive electrode core body exposed portion.Type: GrantFiled: June 10, 2014Date of Patent: September 18, 2018Assignee: SANYO ELECTRIC CO., LTD.Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
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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
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Patent number: 9577245Abstract: Disclosed is a non-aqueous electrolyte secondary cell excellent in capacity retention rate and I-V characteristics after repeated cycles. The secondary cell contains a negative electrode active material containing scaly graphite particles and coated graphite particles. The coated graphite particles contain graphite particles and a coating layer coating the surfaces of the graphite particles. The coating layer contains amorphous carbon particles and an amorphous carbon layer. It is preferable that the negative electrode active material contain 1 to 6% by mass of the scaly graphite particles and that the graphite particles, the amorphous carbon particles, and the amorphous carbon layer be in a mass ratio of 100:?:? where 1???10, 1???10, and ??1.34?.Type: GrantFiled: June 25, 2012Date of Patent: February 21, 2017Assignee: SANYO Electric Co., Ltd.Inventors: Shinichi Yamami, Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
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Publication number: 20160276699Abstract: A prismatic nonaqueous electrolyte secondary battery includes a flat winding electrode assembly formed by winding an elongated positive and negative electrodes with an elongated separator interposed therebetween, and an outer body storing the flat winding electrode assembly and a nonaqueous electrolyte. The positive electrode includes a positive electrode substrate exposed portion formed along a longitudinal direction. The negative electrode includes a negative electrode substrate exposed portion formed along a longitudinal direction. The nonaqueous electrolyte contains at least one of a lithium salt having an oxalate complex as an anion and lithium difluorophosphate (LiPF2O2) at the time of making the nonaqueous electrolyte secondary battery. The flat winding electrode assembly has eight or more layers of a winding portion formed only of the separator in its central portion.Type: ApplicationFiled: August 8, 2013Publication date: September 22, 2016Applicant: SANYO ELECTRIC CO., LTD.Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
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Patent number: 9450269Abstract: A prismatic nonaqueous electrolyte secondary battery includes a flat winding electrode assembly formed by winding an elongated positive and negative electrodes with an elongated separator interposed therebetween, and an outer body storing the flat winding electrode assembly and a nonaqueous electrolyte. The positive electrode includes a positive electrode substrate exposed portion formed along a longitudinal direction. The negative electrode includes a negative electrode substrate exposed portion formed along a longitudinal direction. The nonaqueous electrolyte contains at least one of a lithium salt having an oxalate complex as an anion and lithium difluorophosphate (LiPF2O2) at the time of making the nonaqueous electrolyte secondary battery. The flat winding electrode assembly has eight or more layers of a winding portion formed only of the separator in its central portion.Type: GrantFiled: August 8, 2013Date of Patent: September 20, 2016Assignee: SANYO Electric Co., Ltd.Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
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Publication number: 20160133934Abstract: A non-aqueous electrolyte secondary battery includes a pressure-sensitive current shut-off mechanism, wherein a positive electrode core body exposed portion is disposed at one end portion of a flat rolled electrode assembly, a negative electrode core body exposed portion is disposed at the other end portion, lithium carbonate is contained in a positive electrode mix layer, and a protective layer is disposed along the border with the positive electrode mix layer at the position opposite to a separator on the positive electrode core body exposed portion.Type: ApplicationFiled: June 10, 2014Publication date: May 12, 2016Applicant: SANYO Electric Co., Ltd.Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
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Publication number: 20150044533Abstract: A prismatic nonaqueous electrolyte secondary battery includes a flat winding electrode assembly formed by winding an elongated positive and negative electrodes with an elongated separator interposed therebetween, and an outer body storing the flat winding electrode assembly and a nonaqueous electrolyte. The positive electrode includes a positive electrode substrate exposed portion formed along a longitudinal direction. The negative electrode includes a negative electrode substrate exposed portion formed along a longitudinal direction. The nonaqueous electrolyte contains at least one of a lithium salt having an oxalate complex as an anion and lithium difluorophosphate (LiPF2O2) at the time of making the nonaqueous electrolyte secondary battery. The flat winding electrode assembly has eight or more layers of a winding portion formed only of the separator in its central portion.Type: ApplicationFiled: August 8, 2013Publication date: February 12, 2015Applicant: SANYO ELECTRIC CO., LTD.Inventors: Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
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Publication number: 20140134492Abstract: Disclosed is a non-aqueous electrolyte secondary cell excellent in capacity retention rate and I-V characteristics after repeated cycles. The secondary cell contains a negative electrode active material containing scaly graphite particles and coated graphite particles. The coated graphite particles contain graphite particles and a coating layer coating the surfaces of the graphite particles. The coating layer contains amorphous carbon particles and an amorphous carbon layer. It is preferable that the negative electrode active material contain 1 to 6% by mass of the scaly graphite particles and that the graphite particles, the amorphous carbon particles, and the amorphous carbon layer be in a mass ratio of 100:?:? where 1???10, 1???10, and ??1.34?.Type: ApplicationFiled: June 25, 2012Publication date: May 15, 2014Applicant: SANYO ELECTRIC CO., LTD.Inventors: Shinichi Yamami, Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
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Publication number: 20140080010Abstract: To provide with high productivity a non-aqueous electrolyte secondary battery having high capacity and superior low temperature characteristics. The present invention is a non-aqueous electrolyte secondary battery including a positive electrode and a non-aqueous electrolyte containing a non-aqueous solvent, the non-aqueous electrolyte secondary battery characterized in that the non-aqueous solvent includes 30 to 70 vol % ethylene carbonate at 25° C. and 1 atm, the non-aqueous electrolyte includes a total of 0.01 to 0.10 mol/L lithium difluorophosphate and/or lithium monofluorophosphate, and the packing density of the positive electrode active material layer is from 2.0 to 2.8 g/ml.Type: ApplicationFiled: July 16, 2013Publication date: March 20, 2014Inventors: Shingo Tode, Keisuke Minami, Toyoki Fujihara, Toshiyuki Nohma
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Publication number: 20140045057Abstract: To provide with high productivity a non-aqueous electrolyte secondary battery having high capacity. The present invention is a non-aqueous electrolyte secondary battery provided with an electrode assembly and a non-aqueous electrolyte including a non-aqueous solvent, the electrode assembly including a positive electrode and a negative electrode. In the positive electrode, a positive electrode active material layer is formed on a positive electrode core. In the non-aqueous electrolyte secondary battery, the non-aqueous solvent includes 30 to 70 vol % ethylene carbonate at 25° C. and 1 atm, the non-aqueous electrolyte includes lithium bis(oxalato)borate, and the packing density of the positive electrode active material layer is from 2.0 to 2.8 g/ml.Type: ApplicationFiled: July 16, 2013Publication date: February 13, 2014Inventors: Shingo Tode, Keisuke Minami, Toyoki Fujihara, Toshiyuki Nohma
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Publication number: 20140045012Abstract: To provide a non-aqueous electrolyte secondary battery having high capacity and superior safety and cycle characteristics. The present invention is a non-aqueous electrolyte secondary battery including an electrode assembly and a non-aqueous electrolyte, the electrode assembly having a positive electrode, a negative electrode and a separator separating the positive electrode and the negative electrode, the non-aqueous electrolyte secondary battery characterized in that the separator has a three-layer laminated structure, the melting point of the middle layer being lower than either of the two outer layers, and the non-aqueous electrolyte including lithium bis(oxalato)borate.Type: ApplicationFiled: July 16, 2013Publication date: February 13, 2014Applicant: Sanyo Electric Co., Ltd.Inventors: Taiki Nonaka, Keisuke Minami, Shingo Tode, Toyoki Fujihara, Toshiyuki Nohma
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Patent number: 8597834Abstract: A nonaqueous electrolyte secondary battery including a negative electrode containing a graphite material as the negative active material, a positive electrode containing lithium cobalt oxide as a main component of the positive active material and a nonaqueous electrolyte solution, the battery being characterized in that the lithium cobalt oxide contains a group IVA element selected from the group consisting of Ti, Zr and Hf and a group IIA element of the periodic table, the nonaqueous electrolyte solution contains 0.2-1.5% by weight of a sulfonyl-containing compound and preferably further contains 0.5-4% by weight of vinylene carbonate.Type: GrantFiled: June 17, 2010Date of Patent: December 3, 2013Assignees: Ube Industries Ltd., Sanyo Electric Co., Ltd.Inventors: Koji Abe, Kazuhiro Miyoshi, Yasufumi Takahashi, Hiroyuki Fujimoto, Akira Kinoshita, Shingo Tode, Ikuro Nakane, Shin Fujitani
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Patent number: 8388703Abstract: A method for producing a non-aqueous electrolyte secondary cell by preparing a positive electrode by applying a positive electrode mixture onto a positive electrode core material, the mixture containing a positive electrode active material mainly made of a lithium nickel composite oxide and a binding agent containing polyvinylidene fluoride; measuring the amount of carbon dioxide gas generated when a layer of the positive electrode mixture is removed out of the positive electrode and the layer is heated to 200° C. or higher and 400° C. or lower in an inactive gas atmosphere; selecting a positive electrode satisfying the following formulas: y<(0.27x?51)/1000000(200?x<400)??formula 1 y<57/1000000(400?x?1500)??formula 2 where x is a heating temperature (° C.) and y is the amount of carbon dioxide gas (mole/g) per 1 g of the lithium nickel composite oxide measured; and preparing the non-aqueous electrolyte secondary cell by using the positive electrode selected.Type: GrantFiled: May 11, 2012Date of Patent: March 5, 2013Assignee: SANYO Electric Co., Ltd.Inventors: Katsutoshi Takeda, Yoshio Kato, Shingo Tode, Masanori Maekawa, Shigeki Matsuta
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Publication number: 20130017448Abstract: In a nonaqueous electrolyte secondary battery including a positive electrode (11) whose surface has a positive electrode mixture layer containing a mixture of a conductive carbon material and a positive electrode active material containing a lithium-containing transition metal composite oxide having a layer structure and represented by the general formula LiaNixM(1-x)O2 (where M represents one or more kinds of elements, and a and x satisfy the conditions 0<a?1.2 and 0.4?x?1, respectively), the proportion of carbon atoms relative to the total atoms on the surface of the positive electrode is made to be not less than 80%.Type: ApplicationFiled: March 10, 2011Publication date: January 17, 2013Applicant: SANYO ELECTRIC CO., LTD.Inventors: Akihiro Suzuki, Fumiharu Niina, Shingo Tode, Toshikazu Yoshida, Yoshinori Kida
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Patent number: 8343662Abstract: A nonaqueous electrolyte secondary battery in which a lithium transition metal complex oxide containing at least Ni and Mn as transition metals and having a layered structure is used as a positive active material, the lithium transition metal complex oxide containing at least Ni and Mn as transition metals and having a layered structure further containing zirconium.Type: GrantFiled: August 5, 2004Date of Patent: January 1, 2013Assignee: Sanyo Electric Co., Ltd.Inventors: Shingo Tode, Akira Kinoshita, Hiroyuki Fujimoto, Yasufumi Takahashi, Ikuro Nakane, Shin Fujitani
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Publication number: 20120280172Abstract: A method for producing a non-aqueous electrolyte secondary cell by preparing a positive electrode by applying a positive electrode mixture onto a positive electrode core material, the mixture containing a positive electrode active material mainly made of a lithium nickel composite oxide and a binding agent containing polyvinylidene fluoride; measuring the amount of carbon dioxide gas generated when a layer of the positive electrode mixture is removed out of the positive electrode and the layer is heated to 200° C. or higher and 400° C. or lower in an inactive gas atmosphere; selecting a positive electrode satisfying the following formulas: y<(0.27x?51)/1000000(200?x<400)??formula 1 y<57/1000000(400?x?1500)??formula 2 where x is a heating temperature (° C.) and y is the amount of carbon dioxide gas (mole/g) per 1 g of the lithium nickel composite oxide measured; and preparing the non-aqueous electrolyte secondary cell by using the positive electrode selected.Type: ApplicationFiled: May 11, 2012Publication date: November 8, 2012Applicant: SANYO ELECTRIC CO., LTD.Inventors: Katsutoshi Takeda, Yoshio Kato, Shingo Tode, Masanori Maekawa, Shigeki Matsuta