Patents Assigned to Denso Corporation
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Publication number: 20250116716Abstract: A capacity estimation device that estimates a capacity of a power storage unit at a time of charging the power storage unit includes: a control unit that reduces an average current in a predetermined current restriction section after a start of charging the power storage unit, the average current indicating an average value per unit time of a charging current flowing in the power storage unit; and an estimation unit that estimates the capacity based on a voltage change rate of the power storage unit after or within the current restriction section.Type: ApplicationFiled: December 17, 2024Publication date: April 10, 2025Applicant: DENSO CORPORATIONInventors: Yuki HORI, Masaki UCHIYAMA, Taisuke KURACHI
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Publication number: 20250118996Abstract: A first power supply unit rectifies, to first DC power, external AC power that is wirelessly received by a power receiving coil using magnetic coupling. The first power supply unit supplies the converted first DC power to one or more loads as main power. A second power supply unit is connected to an input stage of the first power supply unit, and outputs second DC power used for control of the first power supply unit. This makes it possible to stably ensure the second DC power used for control of the first power supply unit even if the one or more loads are configured to receive power from the first power supply unit.Type: ApplicationFiled: December 18, 2024Publication date: April 10, 2025Applicant: DENSO CORPORATIONInventors: Masaya TAKAHASHI, Yusei Nakayashiki, Mitsuru Shibanuma, Nobuhisa Yamaguchi
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Publication number: 20250115164Abstract: Direct-current power of a battery is converted to alternating-current power by an inverter to drive a motor generator. A control ECU executes temperature raising control when the battery is at a low temperature. During the temperature raising control, the control ECU superimposes a current ripple for raising the temperature of the battery on a d-axis current command value. A frequency of the current ripple (ripple frequency) varies randomly around a resonance frequency of a battery circuit including the battery. Additionally, a carrier frequency of the inverter varies randomly. As a result, a sound pressure level can be suppressed in regions of the resonance frequency and the carrier frequency during the temperature raising control.Type: ApplicationFiled: July 8, 2024Publication date: April 10, 2025Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Shinya ASAURA, Hirotsugu OHATA, Ryuji OMATA, Takahiro IWAMURA
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Publication number: 20250116710Abstract: A battery controller is equipped with a primary antenna used in radio communication between itself and battery monitors. Each of the battery monitors is equipped with a secondary antenna used in radio communication between itself and the battery controller. Each of the secondary antennas and/or the primary antenna is configured to selectively have a first antenna directivity that is one of a plurality of directivities whose center axes are different in orientation from each other. The first antenna directivity excludes one of the directivities which causes a degree of quality of radio communication between the primary antenna and a corresponding one of the secondary antennas to be minimized or the lowest among the directivities on a channel used for the radio communication.Type: ApplicationFiled: December 17, 2024Publication date: April 10, 2025Applicant: DENSO CORPORATIONInventors: Yuto HONDA, Sho MATSUMOTO, Ryu ATSUTA, Tomohisa KISHIGAMI, Youichi HAYASE, Kohki OHBA
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Patent number: 12273764Abstract: A communication device controls a first communication flow performed by a first terminal and a second communication flow performed by a second terminal. Both of the first communication flow and the second communication flow pass through a sharing section, and the second communication flow has a higher priority than a priority of the first communication flow. The communication device acquires a communication delay in the sharing section; acquires a rated delay of the second communication flow, the rated delay is a communication delay allowed to the second communication flow; and limits input of data from the first communication flow and the second communication flow to the sharing section based on a comparison result between the communication delay of the sharing section and the rated delay.Type: GrantFiled: July 19, 2022Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventors: Tsuneo Nakata, Kousuke Yamaoka
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Patent number: 12273000Abstract: A multi-phase armature winding is made up of winding segments. Each of the winding segments includes a pair of straight sections extending straight in an axial direction of the armature winding and connecting sections which are located on axially opposed end sides of the armature winding. The connecting sections are bent and connect the straight sections together in a circumferential direction of the armature winding. The winding segment is produced by winding a conductor wire member a plurality of times. The conductor wire member is made of a bundle of wires. Each of the straight sections occupies the whole of a coil side and portions of coil ends of the winding segment. Each of the straight sections has holding portions arranged at least in coil end portions thereof. The holding portions work to tighten the wires together.Type: GrantFiled: July 14, 2022Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventor: Yuki Takahashi
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Patent number: 12270945Abstract: An optical ranging device includes a light emitting section provided with a semiconductor laser element having a light emitting region whose length in a first direction is more than that in a second direction intersecting the first direction. The device measures the distance to an object based on the time from light emission from the light emitting section to reception of the light by a light receiving section. A plurality of light emitting regions may be provided in the light emitting section such that they are separated in the second direction and abut or partially overlap each other in the first direction so that the light emitting regions are continuous in the first direction.Type: GrantFiled: June 10, 2021Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventors: Teiyu Kimura, Kenichi Yanai, Shinji Kashiwada, Yoshihide Tachino
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Patent number: 12272994Abstract: In a rotating electrical machine, each magnet installation hole is formed to be in conformity with a radial cross-sectional shape of a corresponding magnet to be installed therein. Each of the magnets and the corresponding magnet installation holes has opposite peripheral surfaces. One of the opposite peripheral surfaces serves as a far-stator peripheral surface located to be further from a stator than the other thereof. The far-stator peripheral surface of each of the magnets and the corresponding magnet installation holes has a circumferential end and a circumferential middle. The magnet unit has a first radial dimension defined from the circumferential end of the far-stator surface to the stator, and a second radial dimension defined from the circumferential middle of the far-stator surface to the stator. The first radial dimension is lower than the second radial dimension.Type: GrantFiled: May 14, 2021Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventor: Yuki Takahashi
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Patent number: 12269452Abstract: A pedal pad in an organ-type pedal device swings about a predetermined axis when stepped on by a driver's foot. A sensor unit outputs a signal corresponding to a swing angle of the pedal pad. A reaction force generation mechanism has an elastic member that generates a reaction force against a driver's pedaling force applied to the pedal pad. A first housing covers the reaction force generation mechanism, and an opening at least on one side. A second housing is provided on one side of the first housing in a swing direction of the pedal pad. Further, the first housing has a largest opening on a second housing side, which is closed by the second housing and into which the elastic member of the reaction force generation mechanism in a non-bending state is insertable.Type: GrantFiled: November 2, 2023Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventors: Daisuke Hokuto, Etsugo Yanagida, Masashi Arao, Kengo Ito, Yasuhisa Fukuda
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Patent number: 12269733Abstract: A micro vibration body includes a curved surface portion, which has an annular curved surface, and a recessed portion, which is recessed from the curved surface portion. A mounting substrate includes an inner frame portion and electrode portions, which surround an inner frame portion. A joining member is provided in an inner region of the mounting substrate surrounded by the inner frame portion. The recessed portion of the micro vibration body has a bottom surface defining a mounted surface located in the inner region and joined to the mounting substrate via the joining member. The curved surface portion has a rim that includes an end portion of the curved surface portion on an opposite side to the recessed portion. The rim has a rim lower surface located on a same plane as the mounted surface or a tip end portion of the mounted surface.Type: GrantFiled: March 24, 2022Date of Patent: April 8, 2025Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, MIRISE Technologies CorporationInventors: Keitaro Ito, Shota Harada, Katsuaki Goto, Yuuki Inagaki, Teruhisa Akashi, Hirofumi Funabashi, Takahiko Yoshida, Yusuke Kawai
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Patent number: 12269434Abstract: A windscreen wiper blade includes a blade body, a blade rubber, and a yoke. The blade body includes first and second locks. The yoke is made of a metal plate and includes a first extension and a blade rubber retainer. The first extension has a fitting bead which the first lock engages. The blade rubber retainer extends from the first extension and retains the blade rubber. The yoke also includes second and third extensions. The second extension extends away from the blade rubber from an end of the first extension located away from the fitting bead. The third extension has a locking hole in which the second lock is fit and extends toward the blade rubber from an end of the second extension located away from the first extension. The yoke includes a burned portion defining a boundary between the second and third extension. The second and third extensions overlap.Type: GrantFiled: January 2, 2024Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventors: Makoto Saito, Jun Hamamoto, Hiroki Nose
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Patent number: 12270859Abstract: A battery monitoring apparatus includes a battery ECU, satellite devices each of which measures the voltage at a battery cell in response to a command signal from the battery ECU, and a wireless module which achieves a wireless communication between the battery ECU and each of the satellite devices after a wireless connection between the battery ECU and each of the satellite devices is completed. when receiving a start signal outputted before a start switch for a drive power source of the vehicle is turned on, the wireless module is activated to start the wireless connection between the battery ECU and each of the satellite devices. This establishes and completes the wireless connections faster than when the wireless module is activated simultaneously with turning on of the start switch for the drive power source. This achieves quick monitoring of the state of the battery cells.Type: GrantFiled: August 24, 2023Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventors: Akihiko Ito, Tatsuhiro Numata
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Patent number: 12269480Abstract: A vehicular position estimation system determines a portable terminal position by causing multiple in-vehicle communication devices placed at different positions on a vehicle to wirelessly communicate with a potable terminal, and includes: a distance index value acquisition portion that acquires a distance index value indicating a distance between the multiple in-vehicle communication devices; a normal range storage portion that stores data indicating a normal range of the distance index value; and a communication device diagnosis portion that determines whether the in-vehicle communication device is normal. When the distance index value between a diagnosis target device and at least one different device is in a normal range, the communication device diagnosis portion determines that a failure does not occur in the diagnosis target device.Type: GrantFiled: July 28, 2021Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventors: Kenichiro Sanji, Youhei Sekiya, Takashi Shinoda, Kazuhiro Nakashima
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Patent number: 12272942Abstract: A power supply system which includes a first system, a second system, and a system-to-system switch. The first system delivers electrical power from a first power supply to an electrical load through a first power feeding path. The second system delivers electrical power from a second power supply to the electrical load through a second power feeding path. The system-to-system switch is arranged in a connecting path which connects the first and second power feeding paths together. The power supply system also has an in-system switch which is disposed in the second power feeding path between a junction of the second power feeding path and the connecting path and the second power supply. When it is determined that a malfunction has occurred in the second system in a condition where the system-to-system switch and the in-system switch are closed, the system-to-system switch is opened.Type: GrantFiled: April 6, 2023Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventor: Tetsuo Morita
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Patent number: 12271095Abstract: An optical scanner includes a substrate, an optical phased array, a shape sensor, a deviation calculation unit, and a control unit. The optical phased array includes an antenna array having a plurality of antenna elements. The deviation calculation unit calculates an amount of positional deviation of each antenna element based on an amount of deformation of the substrate detected by the shape sensor, and calculates an amount of phase deviation of light emitted from each antenna element. The control unit corrects the phase of light emitted from each antenna element based on the amount of phase deviation calculated by the deviation calculation unit, and controls the phase of the antenna element so that the antenna array emits the light in a target direction.Type: GrantFiled: March 4, 2022Date of Patent: April 8, 2025Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, MIRISE Technologies CorporationInventors: Hikaru Sasaki, Koichi Oyama, Taro Beppu
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Patent number: 12270862Abstract: A battery monitor system includes: a reference signal generation unit; an excitation signal generation unit; a current generation unit for an excitation current; a current measurement unit for the excitation current; a voltage measurement unit for a voltage of each battery cell; an impedance measurement unit for an impedance of each battery cell; a noise measurement unit for a noise voltage; and a control unit. The control unit selects one or more battery cells not a measurement target, and the noise measurement unit measures the noise voltage near a measurement frequency equal to a frequency of an orthogonal reference signal while operating the voltage measurement unit without operating the current generation unit.Type: GrantFiled: January 12, 2023Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventors: Yoshikazu Furuta, Soya Taniguchi, Tomohiro Nezuka, Kazutaka Honda
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Patent number: 12270933Abstract: In a radar apparatus, a high-frequency integrated circuit is mounted to a board, and a shielding case encloses the high-frequency integrated circuit. A radio-absorbing and heat-dissipative gel is arranged to cover at least part of the high-frequency integrated circuit and to be in contact with the shielding case.Type: GrantFiled: January 3, 2022Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventors: Yusuke Tainaka, Akira Shintai, Shinji Kawano
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Patent number: 12270894Abstract: A system is provided and includes a receiver and an access module. The receiver is configured to receive a signal transmitted from a portable access device to a vehicle. The access module is configured to generate a differentiated signal based on the received signal, up-sample the differentiated signal to generate a first up-sampled signal, up-sample an expected signal to generate a second up-sampled signal, cross-correlate the first up-sampled signal and the second up-sampled signal to generate a cross-correlation signal, determine, based on the cross-correlation signal, a phase difference between the first up-sampled signal and the second up-sampled signal, determine a round trip time of the signal received by the receiver based on the phase difference, and permit access to the vehicle based on the round trip time.Type: GrantFiled: June 27, 2023Date of Patent: April 8, 2025Assignees: DENSO International America, Inc., DENSO CORPORATIONInventors: Raymond Michael Stitt, John Videtich
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Patent number: 12272159Abstract: In a driving analysis device, an information generation unit generates a time series of detection elements including a line-of-sight direction indicating to which of a plurality of preset viewable areas a line of sight of a driver driving a vehicle is oriented and an open/closed state of driver's eyes. An acquisition unit acquires evaluation data from the time series of the detection elements using a time window having a preset time width. An extraction unit extracts a plurality of feature quantities including at least a result of summation of appearance frequencies with respect to each of the detection elements from the evaluation data. An analysis unit analyzes a driver's tendency using a function that receives, as input, at least a part of the feature quantities extracted by the extraction unit.Type: GrantFiled: May 27, 2022Date of Patent: April 8, 2025Assignee: DENSO CORPORATIONInventors: Keisuke Kurokawa, Kaname Ogawa
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Publication number: 20250112284Abstract: A battery control device includes a parent-device-side storage unit, a parent-device-side communication unit and an identification unit. The parent-device-side storage unit is configured to store parameters related to communication quality of wireless communication between the battery monitoring devices and the battery control device when batteries, battery monitoring devices and the battery control device are arranged in a predetermined arrangement state in an accommodation section; the parameters are associated respectively with the battery monitoring devices. The parent-device-side communication unit is configured to perform the wireless communication with the battery monitoring devices.Type: ApplicationFiled: December 12, 2024Publication date: April 3, 2025Applicant: DENSO CORPORATIONInventors: Yuto HONDA, Sho MATSUMOTO, Yoshimitsu INOUE, Hideki MORISHIMA, Kohki OHBA, Ryu ATSUTA, Tomohisa KISHIGAMI, Youichi HAYASE