Patents by Inventor Kunihiko Hikiri
Kunihiko Hikiri 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: 10655548Abstract: An electric supercharging system has an electric supercharger disposed on an intake air passage of an engine and a control unit in which a microcomputer is built. Then, control unit changes an actuation timing of the electric supercharger on the basis of change amounts of a rotational speed and an accelerator opening of the engine. At this time, the control unit changes the actuation timing of the electric supercharger by correcting the actuation timing of the electric supercharger according to the rotational speed of the engine with a coefficient according to the change amount of the accelerator opening.Type: GrantFiled: February 17, 2015Date of Patent: May 19, 2020Assignee: VOLVO TRUCK CORPORATIONInventors: Kunihiko Hikiri, Yasuo Asaumi, Kenichiro Imaoka
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Patent number: 10315522Abstract: A charge/discharge system includes a controller to control an electric power converter placed between a capacitor and a secondary battery connected in parallel. The controller includes: a request power calculation unit configured to calculate request input/output power for the electric motor generator based on current and voltage of the capacitor and input output current of the electric power converter; a capacitor discharging bias factor map configured to specify a ratio of electric power to be supplied from the capacitor to the electric motor generator to the request input power of the electric motor generator; a capacitor charging bias factor map configured to specify a ratio of electric power to be stored in the capacitor from the electric motor generator to the request output power of the electric motor generator; and a subtraction unit configured to calculate charge/discharge power of the secondary battery by subtracting, from the request input/output power, the charge/discharge power of the capacitor.Type: GrantFiled: November 13, 2013Date of Patent: June 11, 2019Assignee: Volvo Lastvagnar ABInventors: Kunihiko Hikiri, Takayuki Tsuchiya
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Patent number: 10252623Abstract: A charge/discharge system includes first and second electric chargers that supplies electric power to a motor generator and charges electric power generated by the motor generator, an electric power converter that complementarily performs charging/discharging between the first and second electric chargers, and a controller. The controller controls the electric power converter based on charging conditions of the first and second electric chargers such that electric power charged in the first electric charger is charged in the second electric charger, or electric power charged in the second electric charger is charged in the first electric charger.Type: GrantFiled: November 12, 2012Date of Patent: April 9, 2019Assignee: VOLVO TRUCK CORPORATIONInventors: Kunihiko Hikiri, Takayuki Tsuchiya
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Publication number: 20180216544Abstract: An electric supercharging system has an electric supercharger disposed on an intake air passage of an engine and a control unit in which a microcomputer is built. Then, control unit changes an actuation timing of the electric supercharger on the basis of change amounts of a rotational speed and an accelerator opening of the engine. At this time, the control unit changes the actuation timing of the electric supercharger by correcting the actuation timing of the electric supercharger according to the rotational speed of the engine with a coefficient according to the change amount of the accelerator opening.Type: ApplicationFiled: February 17, 2015Publication date: August 2, 2018Applicant: VOLVO TRUCK CORPORATIONInventors: Kunihiko HIKIRI, Yasuo ASAUM!, Kenichiro IMAOKA
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Patent number: 9834100Abstract: A charge/discharge system includes: first and second electric chargers that supplies electric power to a motor generator and charges electric power generated by a motor generator; an electric power converter; and a controller. The controller controls the electric power converter such that electric power charged in the first electric charger is supplied to the motor generator, electric power charged in the second electric charger is charged in the first electric charger when a charging capacity of the first electric charger is lower than a second predetermined value. The driving force of the motor generator is reduced depending on the charging capacity when the charging capacity of the first electric charger is lower than the first predetermined value.Type: GrantFiled: November 12, 2012Date of Patent: December 5, 2017Assignee: Volvo Truck CorporationInventors: Kunihiko Hikiri, Noriaki Miyake
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Patent number: 9831671Abstract: A power supply device for supplying power to a load by combining a secondary battery and a capacitor includes a switching element which switches the supply of power to the load from the capacitor, a DC-DC converter which enables a voltage of the capacitor to be stepped up and supplied to the load and a control unit which enables power to be supplied to the load by pulse-controlling the switching element, controlling the DC-DC converter to output a pulse current alternately with the switching element and combining the alternately output pulse currents if the voltage of the capacitor drops below a minimum voltage capable of driving the load.Type: GrantFiled: November 9, 2012Date of Patent: November 28, 2017Assignee: Volvo Truck CorporationInventors: Yoshiaki Yamada, Takayuki Tsuchiya, Kunihiko Hikiri, Koichi Itani, Hiroshi Toyama, Noriaki Miyake
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Patent number: 9627999Abstract: A power supply device for supplying power to a load by combining a secondary battery and a capacitor includes a bypass switch which enables power to be directly supplied to the load from the capacitor by being switched to a connected state when a voltage of the capacitor is a voltage capable of driving the load, and a first DC-DC converter which enables the voltage of the capacitor to be stepped up and supplied to the load when the voltage of the capacitor drops below a minimum voltage capable of driving the load.Type: GrantFiled: November 7, 2012Date of Patent: April 18, 2017Assignee: Volvo Truck CorporationInventors: Yoshiaki Yamada, Takayuki Tsuchiya, Kunihiko Hikiri, Koichi Itani, Hiroshi Toyama, Noriaki Miyake
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Patent number: 9520806Abstract: A power supply device for supplying power to a load by combining a secondary battery and a capacitor connected in parallel to the secondary battery includes an insulation type DC-DC converter with a primary coil connected in parallel to the secondary battery and configured to accumulate energy by a current supplied from the secondary battery and a secondary coil connected in series to the capacitor and configured such that an induction current flows therein by the accumulated energy from the primary coil.Type: GrantFiled: December 4, 2012Date of Patent: December 13, 2016Assignee: Volvo Truck CorporationInventors: Yoshiaki Yamada, Takayuki Tsuchiya, Kunihiko Hikiri, Kouichi Itani, Noriaki Miyake
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Patent number: 9490710Abstract: A power supply device supplies power to a load by combining a secondary battery and a capacitor connected in parallel to the secondary battery. The power supply device includes an insulation type DC-DC converter with a primary coil connected in parallel to the secondary battery and configured to accumulate energy by a current supplied from the secondary battery and a secondary coil configured such that an induction current flows thereinto from the primary coil by the accumulated energy, and a switching circuit configured to selectively connect the secondary coil in series to the capacitor in forward and opposite directions.Type: GrantFiled: December 18, 2012Date of Patent: November 8, 2016Assignee: Volvo Truck CorporationInventors: Yoshiaki Yamada, Takayuki Tsuchiya, Kunihiko Hikiri, Koichi Itani, Noriaki Miyake
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Publication number: 20160288662Abstract: A charge/discharge system includes a controller to control an electric power converter placed between a capacitor and a secondary battery connected in parallel. The controller includes: a request power calculation unit configured to calculate request input/output power for the electric motor generator based on current and voltage of the capacitor and input output current of the electric power converter; a capacitor discharging bias factor map configured to specify a ratio of electric power to be supplied from the capacitor to the electric motor generator to the request input power of the electric motor generator; a capacitor charging bias factor map configured to specify a ratio of electric power to be stored in the capacitor from the electric motor generator to the request output power of the electric motor generator; and a subtraction unit configured to calculate charge/discharge power of the secondary battery by subtracting, from the request input/output power, the charge/discharge power of the capacitor.Type: ApplicationFiled: November 13, 2013Publication date: October 6, 2016Applicant: VOLVO LASTVAGNAR AKTIEBOLAGInventors: Kunihiko HIKIRI, Takayuki TSUCHIYA
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Publication number: 20160288663Abstract: A charge/discharge system is capable of supplying electric power to an electric motor generator and capable of charging with regenerative electric power from the electric motor generator. The charge/discharge system includes: a capacitor connected to the electric motor generator; a secondary battery connected in parallel to the capacitor; an electric power converter placed between the capacitor and the secondary battery to increase/decrease the charge/discharge voltage of the secondary battery; and a controller to control the electric power converter. If the SOC of the secondary battery is equal to or greater than a preset first setting value, the controller controls so that regenerative electric power of the electric motor generator is stored in the capacitor only, and if the SOC of the secondary battery falls below the first setting value, a part or an entire of the regenerative electric power of the electric motor generator is stored in the secondary battery.Type: ApplicationFiled: November 13, 2013Publication date: October 6, 2016Applicant: VOLVO LASTVAGNAR AKTIEBOLAGInventors: Kunihiko HIKIRI, Takayuki TSUCHIYA
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Patent number: 9208957Abstract: An electric storage cell includes a casing configured to house an electric storage element and electrolyte, a charging reception antenna connected to the electric storage element and configured to receive electric power transmitted from a power feeding unit in a contactless manner, and a discharging transmission antenna connected to the electric storage element and configured to transmit electric power stored in the electric storage element in a contactless manner. The charging reception antenna and the discharging transmission antenna are arranged in the casing.Type: GrantFiled: November 28, 2011Date of Patent: December 8, 2015Assignee: UD TRUCKS CORPORATIONInventors: Shigemi Kobayashi, Kunihiko Hikiri, Masayuki Nakane
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Publication number: 20150343909Abstract: A charge/discharge system includes first and second electric chargers that supplies electric power to a motor generator and charges electric power generated by the motor generator, an electric power converter that complementarily performs charging/discharging between the first and second electric chargers, and a controller. The controller controls the electric power converter based on charging conditions of the first and second electric chargers such that electric power charged in the first electric charger is charged in the second electric charger, or electric power charged in the second electric charger is charged in the first electric charger.Type: ApplicationFiled: November 12, 2012Publication date: December 3, 2015Inventors: KUNIHIKO HIKIRI, TAKAYUKI TSUCHIYA
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Publication number: 20150336466Abstract: A charge/discharge system includes: first and second electric chargers that supplies electric power to a motor generator and charges electric power generated by a motor generator; an electric power converter; and a controller. The controller controls the electric power converter such that electric power charged in the first electric charger is supplied to the motor generator, electric power charged in the second electric charger is charged in the first electric charger when a charging capacity of the first electric charger is lower than a second predetermined value. The driving force of the motor generator is reduced depending on the charging capacity when the charging capacity of the first electric charger is lower than the first predetermined value.Type: ApplicationFiled: November 12, 2012Publication date: November 26, 2015Inventors: KUNIHIKO HIKIRI, NORIAKI MIYAKE
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Publication number: 20150333513Abstract: A power supply device for supplying power to a load by combining a secondary battery and a capacitor includes a switching element which switches the supply of power to the load from the capacitor, a DC-DC converter which enables a voltage of the capacitor to be stepped up and supplied to the load and a control unit which enables power to be supplied to the load by pulse-controlling the switching element, controlling the DC-DC converter to output a pulse current alternately with the switching element and combining the alternately output pulse currents if the voltage of the capacitor drops below a minimum voltage capable of driving the load.Type: ApplicationFiled: November 9, 2012Publication date: November 19, 2015Inventors: YOSHIAKI YAMADA, TAKAYUKI TSUCHIYA, KUNIHIKO HIKIRI, KOICHI ITANI, HIROSHI TOYAMA, NORIAKI MIYAKE
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Publication number: 20150333632Abstract: A power supply device supplies power to a load by combining a secondary battery and a capacitor connected in parallel to the secondary battery. The power supply device includes an insulation type DC-DC converter with a primary coil connected in parallel to the secondary battery and configured to accumulate energy by a current supplied from the secondary battery and a secondary coil configured such that an induction current flows thereinto from the primary coil by the accumulated energy, and a switching circuit configured to selectively connect the secondary coil in series to the capacitor in forward and opposite directions.Type: ApplicationFiled: December 18, 2012Publication date: November 19, 2015Inventors: YOSHIAKI YAMADA, TAKAYUKI TSUCHIYA, KUNIHIKO HIKIRI, KOICHI ITANI, NORIAKI MIYAKE
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Publication number: 20150326066Abstract: A power supply device for supplying power to a load by combining a secondary battery and a capacitor connected in parallel to the secondary battery includes an insulation type DC-DC converter with a primary coil connected in parallel to the secondary battery and configured to accumulate energy by a current supplied from the secondary battery and a secondary coil connected in series to the capacitor and configured such that an induction current flows therein by the accumulated energy from the primary coil.Type: ApplicationFiled: December 4, 2012Publication date: November 12, 2015Applicant: VOLVO TRUCK CORPORATIONInventors: Yoshiaki YAMADA, Takayuki TSUCHIYA, Kunihiko HIKIRI, Kouichi ITANI, Noriaki MIYAKE
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Publication number: 20150311831Abstract: A power supply device for supplying power to a load by combining a secondary battery and a capacitor includes a bypass switch which enables power to be directly supplied to the load from the capacitor by being switched to a connected state when a voltage of the capacitor is a voltage capable of driving the load, and a first DC-DC converter which enables the voltage of the capacitor to be stepped up and supplied to the load when the voltage of the capacitor drops below a minimum voltage capable of driving the load.Type: ApplicationFiled: November 7, 2012Publication date: October 29, 2015Inventors: Yoshiaki Yamada, Takayuki Tsuchiya, Kunihiko Hikiri, Koichi Itani, Hiroshi Toyama, Noriaki Miyake
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Patent number: 8770327Abstract: An accessory drive mechanism for a hybrid vehicle, capable of operating accessories irrespective of the travel state of the vehicle, and also capable of smoothly switching between the power which is transmitted from the traveling motor side and the power which is transmitted from the accessory drive motor side. The accessory drive mechanism is provided with a drive power take-off mechanism (20) for taking out the power from a travel drive system (D). An accessory (11) is connected to the drive power take-off mechanism (20). A first one-way clutch (C1) which can transmit the power only to the accessory (11) side is disposed between the drive power take-off mechanism (20) and the accessory (11). An accessory driving motor (an auxiliary motor (12e)) is connected to the side of the accessory (11) which is on the opposite side from the drive power take-off mechanism (20).Type: GrantFiled: November 5, 2010Date of Patent: July 8, 2014Assignee: UD Trucks CorporationInventors: Yoshiaki Yamada, Takayuki Tsuchiya, Kunihiko Hikiri
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Publication number: 20130266828Abstract: An electric storage cell includes a casing configured to house an electric storage element and electrolyte, a charging reception antenna connected to the electric storage element and configured to receive electric power transmitted from a power feeding unit in a contactless manner, and a discharging transmission antenna connected to the electric storage element and configured to transmit electric power stored in the electric storage element in a contactless manner. The charging reception antenna and the discharging transmission antenna are arranged in the casing.Type: ApplicationFiled: November 28, 2011Publication date: October 10, 2013Inventors: Shigemi Kobayashi, Kunihiko Hikiri, Masayuki Nakane