Patents by Inventor Yuki Takatsuji
Yuki Takatsuji 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: 20240136925Abstract: A circuit board of a switching power supply device includes a positive terminal circuit pattern and a negative terminal circuit pattern that are provided on a component mount surface and respectively supply currents from input parts to two input terminals of a common mode choke coil. The positive terminal circuit pattern and the negative terminal circuit pattern are positioned in parallel and close to each other. The component mount surface of the circuit board includes a component mount surface side ground pattern arranged below the common mode choke coil. A heat dissipation ground surface of the circuit board includes a ground pattern and a plurality of heat dissipation conductor patterns. Input terminals and output terminals of the common mode choke coil are respectively electrically and thermally connected to the heat dissipation conductor patterns via through-hole conductors provided between the component mount surface and the heat dissipation ground surface.Type: ApplicationFiled: December 28, 2023Publication date: April 25, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Yuki ISHIKURA, Tatsuya HOSOTANI, Hiroyuki TAKATSUJI
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Publication number: 20240136926Abstract: A noise reduction circuit includes a surface-mount common mode choke coil mounted on a circuit board. Output terminals of the common mode choke coil are connected to an input capacitor via second circuit patterns. Two terminals of the input capacitor are connected to two input ends of a switching circuit via third circuit patterns. Path lengths of the second circuit patterns are longer than path lengths of the third circuit patterns. Of a plurality of current paths, the path lengths of the third circuit patterns are shortest in comparison with path lengths of other current paths. First circuit patterns are parallel and face each other to form a first parasitic capacitance, and the second circuit patterns are parallel and face each other to form second parasitic capacitances.Type: ApplicationFiled: January 3, 2024Publication date: April 25, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Tatsuya HOSOTANI, Hiroyuki TAKATSUJI, Yuki ISHIKURA
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Publication number: 20240072349Abstract: The induction of thermal runaway is prevented with lower manufacturing costs. In a battery pack, a heat resistant wall is disposed between cylindrical rechargeable battery cells and arranged in parallel to one another, and the heat resistant wall and the battery cells are housed in an exterior case. The heat resistant wall has heat insulating recesses in surfaces each facing the surface of a corresponding one of the battery cells, the heat insulating recesses each forming an air layer having a length extending in the longitudinal direction of the battery cells and a width extending in the circumferential direction of the battery cells.Type: ApplicationFiled: January 20, 2022Publication date: February 29, 2024Inventors: MANABU TADA, MICHINOBU ONO, YUKI TAKATSUJI, RYUSUKE TSUJIGUCHI
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Patent number: 11682804Abstract: A first secondary battery cell and a second secondary battery cell each having a cylindrical shape and connected in series and/or in parallel with each other are aligned and housed in such postures that side surfaces of the cylindrical shapes face each other. A battery pack includes: a longitudinal partition plate disposed at an interface between the first secondary battery cell and the second secondary battery cell housed in an internal space of a housing case; a lead plate that crosses the longitudinal partition plate; and a lateral partition plate that covers the end surfaces of the first secondary battery cell and the second secondary battery cell. The lateral partition plate and the lead plate pass through a longitudinal side slit in a state of overlap between the lateral partition plate and the lead plate.Type: GrantFiled: December 11, 2018Date of Patent: June 20, 2023Assignee: SANYO Electric Co., Ltd.Inventors: Manabu Tada, Yuki Takatsuji, Ryusuke Tsujiguchi, Michinobu Ono
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Patent number: 11502347Abstract: The secondary battery cells are disposed in parallel in such postures that side surfaces of cylindrical shapes face each other in an internal space of a housing case, and are separated from each other with a longitudinal partition plate interposed between the secondary battery cells. A pair of ribs are provided on an inner surface of the housing case to hold the longitudinal partition plate. The longitudinal partition plate disposed between the pair of ribs is held in the housing case. A gap between the pair of ribs and the longitudinal partition plate is filled with a flame-retardant adhesive material.Type: GrantFiled: December 11, 2018Date of Patent: November 15, 2022Assignee: SANYO Electric Co., Ltd.Inventors: Manabu Tada, Yuki Takatsuji, Ryusuke Tsujiguchi, Michinobu Ono
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Patent number: 11495843Abstract: A battery pack includes: a plurality of secondary battery cells connected to each other in series and/or in parallel; and a housing case that includes a plurality of battery housing spaces for housing the plurality of secondary battery cells. A number of the plurality of battery housing spaces is larger than a number of the plurality of secondary battery cells. A heat absorber is disposed in the battery housing space where the secondary battery cell is not housed.Type: GrantFiled: December 11, 2018Date of Patent: November 8, 2022Assignee: SANYO Electric Co., Ltd.Inventors: Manabu Tada, Yuki Takatsuji, Ryusuke Tsujiguchi, Michinobu Ono
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Patent number: 11489218Abstract: A battery pack includes: a first secondary battery cell and a second secondary battery cell each having a cylindrical shape and connected in series and/or in parallel with each other; a housing case; and a longitudinal partition plate having a thermal insulation property, and disposed at an interface between the first secondary battery cell and the second secondary battery cell housed in the internal space of the housing case. The longitudinal partition plate constitutes a first thermal insulator that projects from a side facing the side surface of the cylindrical shape of the first secondary battery cell, and constitutes a second thermal insulator that projects from a side facing the side surface of the cylindrical shape of the second secondary battery cell.Type: GrantFiled: December 11, 2018Date of Patent: November 1, 2022Assignee: SANYO Electric Co., Ltd.Inventors: Manabu Tada, Yuki Takatsuji, Ryusuke Tsujiguchi, Michinobu Ono
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Publication number: 20210043988Abstract: A battery pack includes: a plurality of secondary battery cells connected to each other in series and/or in parallel; and a housing case that includes a plurality of battery housing spaces for housing the plurality of secondary battery cells. A number of the plurality of battery housing spaces is larger than a number of the plurality of secondary battery cells. A heat absorber is disposed in the battery housing space where the secondary battery cell is not housed.Type: ApplicationFiled: December 11, 2018Publication date: February 11, 2021Applicant: SANYO Electric Co., Ltd.Inventors: Manabu Tada, Yuki Takatsuji, Ryusuke Tsujiguchi, Michinobu Ono
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Publication number: 20210036279Abstract: A first secondary battery cell and a second secondary battery cell each having a cylindrical shape and connected in series and/or in parallel with each other are aligned and housed in such postures that side surfaces of the cylindrical shapes face each other. A battery pack includes: a longitudinal partition plate disposed at an interface between the first secondary battery cell and the second secondary battery cell housed in an internal space of a housing case; a lead plate that crosses the longitudinal partition plate; and a lateral partition plate that covers the end surfaces of the first secondary battery cell and the second secondary battery cell. The lateral partition plate and the lead plate pass through a longitudinal side slit in a state of overlap between the lateral partition plate and the lead plate.Type: ApplicationFiled: December 11, 2018Publication date: February 4, 2021Applicant: SANYO Electric Co., Ltd.Inventors: Manabu Tada, Yuki Takatsuji, Ryusuke Tsujiguchi, Michinobu Ono
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Publication number: 20200358153Abstract: A battery pack includes: a first secondary battery cell and a second secondary battery cell each having a cylindrical shape and connected in series and/or in parallel with each other; a housing case; and a longitudinal partition plate having a thermal insulation property, and disposed at an interface between the first secondary battery cell and the second secondary battery cell housed in the internal space of the housing case. The longitudinal partition plate constitutes a first thermal insulator that projects from a side facing the side surface of the cylindrical shape of the first secondary battery cell, and constitutes a second thermal insulator that projects from a side facing the side surface of the cylindrical shape of the second secondary battery cell.Type: ApplicationFiled: December 11, 2018Publication date: November 12, 2020Applicant: SANYO Electric Co., Ltd.Inventors: Manabu Tada, Yuki Takatsuji, Ryusuke Tsujiguchi, Michinobu Ono
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Publication number: 20200358063Abstract: The secondary battery cells are disposed in parallel in such postures that side surfaces of cylindrical shapes face each other in an internal space of a housing case, and are separated from each other with a longitudinal partition plate interposed between the secondary battery cells. A pair of ribs are provided on an inner surface of the housing case to hold the longitudinal partition plate. The longitudinal partition plate disposed between the pair of ribs is held in the housing case. A gap between the pair of ribs and the longitudinal partition plate is filled with a flame-retardant adhesive material.Type: ApplicationFiled: December 11, 2018Publication date: November 12, 2020Applicant: SANYO Electric Co., Ltd.Inventors: Manabu Tada, Yuki Takatsuji, Ryusuke Tsujiguchi, Michinobu Ono