Patents by Inventor Yohei IMAI
Yohei IMAI 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: 20240088797Abstract: An electric power converter converts electric power supplied from a power supply to an electrical load. The electric power converter includes a coil, an electrically conductive portion and a current sensor. The coil extends in an axial direction of the coil. The coil allows a current to flow through the coil. The electrically conductive portion is located at a position apart from the coil. The electrically conductive portion allows the current to flow through the electrically conductive portion. The current sensor detects the current flowing through the electrically conductive portion. The current sensor includes a first sensor element and a second sensor element, each of which detects a magnetic flux being a detected magnetic flux generated by the current flowing through the electrically conductive portion. The first sensor element and the second sensor element are disposed in a radial direction of the coil.Type: ApplicationFiled: November 22, 2023Publication date: March 14, 2024Applicant: DENSO CORPORATIONInventors: Junya MATSUSHITA, Yohei Imai, Yoshihide Fukuda
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Patent number: 11920674Abstract: In this shift device, in a case in which an external force has acted on a lever when an operating mechanism is causing the lever to pivot, a clutch mechanism permits rotation of a first detent plate with respect to a second detent plate, such that pivoting of the lever is permitted. Note that a restraining mechanism urges the lever toward a shift position. This enables to the restraining mechanism to urge the lever separately to the clutch mechanism, thereby enabling the degrees of freedom for setting a biasing load on the lever by the restraining mechanism to be increased.Type: GrantFiled: March 18, 2022Date of Patent: March 5, 2024Assignee: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventors: Tomonori Hayase, Koji Imai, Tomoaki Asai, Kota Nishida, Yohei Nakano, Yosuke Murakami, Munetoshi Makimura
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Patent number: 11916491Abstract: An electric power converter includes a plurality of power modules, a capacitor, a positive bus bar, and a negative bus bar. Each of the power modules includes a positive terminal and a negative terminal on a side facing the capacitor. Leading ends of the positive terminal and negative terminal are parallel to the side. The positive bus bar includes a positive/negative base plate joined to a positive/negative electrode of the capacitor and a positive/negative flange bent from the positive/negative base plate. The positive/negative flange is joined to the positive/negative terminals of the power modules. The positive flange and the negative flange extend in directions away from the capacitor.Type: GrantFiled: March 1, 2022Date of Patent: February 27, 2024Assignee: DENSO CORPORATIONInventors: Shingo Miyamoto, Yohei Imai
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Publication number: 20240047981Abstract: Disclosed herein is a power supply device and a control method for the power supply device. The power supply device includes: a battery; an external interface electrically connected to the battery and electrically attachable to or detachable from an external device; a voltage converter provided between the battery and the external interface; a low-voltage circuit that branches from an interface connection circuit connecting the external interface and the voltage converter and is connected to a low-voltage load having a rated voltage lower than a voltage of the battery; an interrupt circuit provided in the low-voltage circuit and configured to electrically interrupt the low-voltage circuit and the interface connection circuit; and an electronic control unit configured to control operations of the voltage converter and the interrupt circuit. The electronic control unit operates the interrupt circuit when a voltage of the interface connection circuit exceeds the rated voltage of the low-voltage load.Type: ApplicationFiled: June 20, 2023Publication date: February 8, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daisuke UEO, Ryota TANABE, Yohei IMAI
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Publication number: 20240027502Abstract: A current detection device detects an electric current. The current detection device includes a first conducting portion, a second conducting portion, and a current sensor. An electric current flows through the first conducting portion in a specific direction. The second conducting portion is provided at a position separated from the first conducting portion in the specific direction and through which an electric current flows in the specific direction. The current sensor detects an electric current flowing through the first conducting portion. The current sensor is located at a position aligned with the first conducting portion in an orthogonal direction orthogonal to the specific direction and separated from the second conducting portion in the specific direction. The current sensor includes a sensor element which detects a magnetic flux generated by the electric current flowing through the first conducting portion and an element protector which protects the sensor element.Type: ApplicationFiled: October 3, 2023Publication date: January 25, 2024Applicant: DENSO CORPORATIONInventors: Junya MATSUSHITA, Yohei IMAI
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Publication number: 20220190737Abstract: An electric power converter includes a plurality of power modules, a capacitor, a positive bus bar, and a negative bus bar. Each of the power modules includes a positive terminal and a negative terminal on a side facing the capacitor. Leading ends of the positive terminal and negative terminal are parallel to the side. The positive bus bar includes a positive/negative base plate joined to a positive/negative electrode of the capacitor and a positive/negative flange bent from the positive/negative base plate. The positive/negative flange is joined to the positive/negative terminals of the power modules. The positive flange and the negative flange extend in directions away from the capacitor.Type: ApplicationFiled: March 1, 2022Publication date: June 16, 2022Applicant: DENSO CORPORATIONInventors: Shingo MIYAMOTO, Yohei IMAI
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Patent number: 11223295Abstract: In a capacitor device for transferring power between a power source and a target component including an electronic and/or electric component, at least one capacitor is housed in a capacitor case. A busbar is drawn out from the capacitor case. The busbar electrically connects the at least one capacitor to the target component. The capacitor case includes at least first, second, and third fixture members for fixation of the capacitor case. The third fixture member is located to be separated from a virtual line connecting between a first reference point of the first fixture member and a second reference point of the second fixture member, and located to be closer to the target component than the first and second fixture members are. The busbar is located to be closer to the third fixture member than to the virtual line.Type: GrantFiled: September 9, 2019Date of Patent: January 11, 2022Assignee: DENSO CORPORATIONInventors: Tomohisa Sano, Daisuke Harada, Seido Araki, Yohei Imai, Kentaro Hirose
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Patent number: 10734162Abstract: To provide a capacitor device capable of preventing thermal interference between a filter capacitor and a plurality of smoothing capacitors. A capacitor device provided in an energization circuit between a power source and a semiconductor module as a power supply device includes a filter capacitor for removing a noise included in a current supplied from a power input terminal, a plurality of smoothing capacitors for smoothing a voltage, and a capacitor case that houses the filter capacitor and the plurality of smoothing capacitors, and a first gap between the filter capacitor and a smoothing capacitor provided at a position closest to the filter capacitor among the plurality of smoothing capacitors is configured to be larger than a second gap between two smoothing capacitors adjacent to each other among the plurality of smoothing capacitors.Type: GrantFiled: July 15, 2019Date of Patent: August 4, 2020Assignee: DENSO CORPORATIONInventors: Tomohisa Sano, Kentaro Hirose, Yohei Imai, Seido Araki
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Publication number: 20200091833Abstract: In a capacitor device for transferring power between a power source and a target component including an electronic and/or electric component, at least one capacitor is housed in a capacitor case. A busbar is drawn out from the capacitor case. The busbar electrically connects the at least one capacitor to the target component. The capacitor case includes at least first, second, and third fixture members for fixation of the capacitor case. The third fixture member is located to be separated from a virtual line connecting between a first reference point of the first fixture member and a second reference point of the second fixture member, and located to be closer to the target component than the first and second fixture members are. The busbar is located to be closer to the third fixture member than to the virtual line.Type: ApplicationFiled: September 9, 2019Publication date: March 19, 2020Applicant: DENSO CORPORATIONInventors: Tomohisa SANO, Daisuke HARADA, Seido ARAKI, Yohei IMAI, Kentaro HIROSE
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Publication number: 20200020485Abstract: To provide a capacitor device capable of preventing thermal interference between a filter capacitor and a plurality of smoothing capacitors. A capacitor device provided in an energization circuit between a power source and a semiconductor module as a power supply device includes a filter capacitor for removing a noise included in a current supplied from a power input terminal, a plurality of smoothing capacitors for smoothing a voltage, and a capacitor case that houses the filter capacitor and the plurality of smoothing capacitors, and a first gap between the filter capacitor and a smoothing capacitor provided at a position closest to the filter capacitor among the plurality of smoothing capacitors is configured to be larger than a second gap between two smoothing capacitors adjacent to each other among the plurality of smoothing capacitors.Type: ApplicationFiled: July 15, 2019Publication date: January 16, 2020Applicant: DENSO CORPORATIONInventors: Tomohisa SANO, Kentaro HIROSE, Yohei IMAI, Seido ARAKI
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Patent number: 9545848Abstract: A power converter includes a capacitor, a case, and a filler. The case houses the capacitor and includes a metal plate and a partition wall. The filler is interposed between the case and the capacitor. The metal plate is positioned between the capacitor and another electronic component, inside the power converter. Also, the partition wall separates the capacitor from the metal plate.Type: GrantFiled: October 8, 2013Date of Patent: January 17, 2017Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYODA IRON WORKS CO., LTD.Inventors: Yohei Imai, Takashi Hamatani, Kunihiro Iwata
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Publication number: 20140111003Abstract: A power converter includes a capacitor, a case, and a filler. The case houses the capacitor and includes a metal plate and a partition wall. The filler is interposed between the case and the capacitor. The metal plate is positioned between the capacitor and another electronic component, inside the power converter. Also, the partition wall separates the capacitor from the metal plate.Type: ApplicationFiled: October 8, 2013Publication date: April 24, 2014Applicants: TOYODA IRON WORKS CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yohei IMAI, Takashi HAMATANI, Kunihiro IWATA