Patents by Inventor Masayuki Hanatani
Masayuki Hanatani 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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Patent number: 9789773Abstract: Charge efficiency of normal charge is improved without restricting an operation of a low-voltage load of an electric vehicle during the normal charge. During a charge of a high-voltage battery of a vehicle, when a determination of the normal charge is made, and when a determination that a mode switching target load is not operated is made, power saving mode transition processing is performed. Therefore, an operating mode of a DC-DC converter, which steps down a voltage at the high-voltage battery and supplies the stepped-down voltage to a low-voltage battery and a low-voltage load, is set to a power saving mode in which consumption power is reduced compared with a normal mode. When a determination that a start-up manipulation of the mode switching target load is performed is made, the operating mode of the DC-DC converter is changed to the normal mode.Type: GrantFiled: September 3, 2015Date of Patent: October 17, 2017Assignee: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.Inventors: Koji Hachiya, Yusaku Ido, Yasumichi Omoto, Masayuki Hanatani, Hajime Tamanaha
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Patent number: 9469262Abstract: A vehicle power-supply control device has a battery charger that converts an externally-supplied AC voltage into a DC voltage used to charge a vehicle high-voltage battery, a low-voltage power generator that converts the DC voltage output from the battery charger into a DC voltage used to drive a vehicle auxiliary machine, and a controller that controls the battery charger and the low-voltage power generator. The battery charger includes a power factor correction circuit that corrects a power factor of the AC voltage and a first DC/DC converter that generates a predetermined DC voltage based on an output of the power factor correction circuit. The low-voltage power generator includes a second DC/DC converter that steps down the DC voltage output from the battery charger and a synchronous rectifier that rectifies an output of the second DC/DC converter in synchronization with a switching operation of the second DC/DC converter.Type: GrantFiled: June 13, 2013Date of Patent: October 18, 2016Assignee: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.Inventors: Yusaku Ido, Takashi Yamada, Tadao Nishiguchi, Masayuki Hanatani, Hideyuki Yasugi
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Publication number: 20150375626Abstract: Charge efficiency of normal charge is improved without restricting an operation of a low-voltage load of an electric vehicle during the normal charge. During a charge of a high-voltage battery of a vehicle, when a determination of the normal charge is made, and when a determination that a mode switching target load is not operated is made, power saving mode transition processing is performed. Therefore, an operating mode of a DC-DC converter, which steps down a voltage at the high-voltage battery and supplies the stepped-down voltage to a low-voltage battery and a low-voltage load, is set to a power saving mode in which consumption power is reduced compared with a normal mode. When a determination that a start-up manipulation of the mode switching target load is performed is made, the operating mode of the DC-DC converter is changed to the normal mode.Type: ApplicationFiled: September 3, 2015Publication date: December 31, 2015Applicant: Omron Automotive Electronics Co., Ltd.Inventors: Koji Hachiya, Yusaku Ido, Yasumichi Omoto, Masayuki Hanatani, Hajime Tamanaha
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Patent number: 9156361Abstract: Charge efficiency of normal charge is improved without restricting an operation of a low-voltage load of an electric vehicle during the normal charge. During a charge of a high-voltage battery of a vehicle, when a determination of the normal charge is made, and when a determination that a mode switching target load is not operated is made, power saving mode transition processing is performed. Therefore, an operating mode of a DC-DC converter, which steps down a voltage at the high-voltage battery and supplies the stepped-down voltage to a low-voltage battery and a low-voltage load, is set to a power saving mode in which consumption power is reduced compared with a normal mode. When a determination that a start-up manipulation of the mode switching target load is performed is made, the operating mode of the DC-DC converter is changed to the normal mode.Type: GrantFiled: March 1, 2012Date of Patent: October 13, 2015Assignee: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.Inventors: Koji Hachiya, Yusaku Ido, Yasumichi Omoto, Masayuki Hanatani, Hajime Tamanaha
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Publication number: 20140015496Abstract: A charging device has an AC power supply input part that rectifies an AC voltage, a power factor correction part that converts a rectified voltage outputted from the AC power supply input part into a DC intermediate voltage, a power conversion part that converts the intermediate voltage outputted from the power factor correction part into a charge voltage, and supplies the charge voltage to a secondary battery, an input voltage acquisition unit that acquires the rectified voltage outputted from the AC power supply input part, an output voltage acquisition unit that acquires the charge voltage outputted from the power conversion part, and a storage part in which the rectified voltage, the charge voltage, and a target intermediate voltage correlated with the rectified voltage and charge voltage are stored.Type: ApplicationFiled: July 2, 2013Publication date: January 16, 2014Applicant: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.Inventors: Tadao Nishiguchi, Takashi Yamada, Hideyuki Yasugi, Masayuki Hanatani, Yusaku Ido
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Publication number: 20130334879Abstract: A vehicle power-supply control device has a battery charger that converts an externally-supplied AC voltage into a DC voltage used to charge a vehicle high-voltage battery, a low-voltage power generator that converts the DC voltage output from the battery charger into a DC voltage used to drive a vehicle auxiliary machine, and a controller that controls the battery charger and the low-voltage power generator. The battery charger includes a power factor correction circuit that corrects a power factor of the AC voltage and a first DC/DC converter that generates a predetermined DC voltage based on an output of the power factor correction circuit. The low-voltage power generator includes a second DC/DC converter that steps down the DC voltage output from the battery charger and a synchronous rectifier that rectifies an output of the second DC/DC converter in synchronization with a switching operation of the second DC/DC converter.Type: ApplicationFiled: June 13, 2013Publication date: December 19, 2013Applicant: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.Inventors: Yusaku Ido, Takashi Yamada, Tadao Nishiguchi, Hideyuki Yasugi, Masayuki Hanatani
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Publication number: 20130051084Abstract: The DC-DC converter can calculate an input voltage without being influenced by a commutation time period of a primary-side current of a transformer. The DC-DC converter includes a transformer that has a primary and secondary winding, a switching circuit that is connected to the primary winding of the transformer to perform input voltage switching, a drive circuit that drives the switching circuit, a rectifier circuit that rectifies an AC voltage generated in the secondary winding of the transformer according to the switching operation of the switching circuit, and a controller that evaluates a value of the input voltage and performs predetermined processing based on the value of the input voltage. The controller detects a pulse signal emerging on an input side or an output side of the rectifier circuit, calculates a duty of the pulse signal, and evaluates the value of the input voltage based on the calculated duty.Type: ApplicationFiled: August 22, 2012Publication date: February 28, 2013Applicant: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.Inventors: Koji Hachiya, Yusaku Ido, Yasumichi Omoto, Masayuki Hanatani, Hajime Tamanaha
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Publication number: 20120223575Abstract: Charge efficiency of normal charge is improved without restricting an operation of a low-voltage load of an electric vehicle during the normal charge. During a charge of a high-voltage battery of a vehicle, when a determination of the normal charge is made, and when a determination that a mode switching target load is not operated is made, power saving mode transition processing is performed. Therefore, an operating mode of a DC-DC converter, which steps down a voltage at the high-voltage battery and supplies the stepped-down voltage to a low-voltage battery and a low-voltage load, is set to a power saving mode in which consumption power is reduced compared with a normal mode. When a determination that a start-up manipulation of the mode switching target load is performed is made, the operating mode of the DC-DC converter is changed to the normal mode.Type: ApplicationFiled: March 1, 2012Publication date: September 6, 2012Applicant: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.Inventors: Koji Hachiya, Yusaku Ido, Yasumichi Omoto, Masayuki Hanatani, Hajime Tamanaha