Patents by Inventor Jun Asakura

Jun Asakura 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).

  • Publication number: 20210223322
    Abstract: In order to easily detect a disconnection in a lowest-order voltage detection line when a voltage detection circuit for detecting the respective voltage of a plurality of serially connected cells is made redundant, the operation power supply of a first voltage detection circuit and a second voltage detection circuit is fed from both ends of a plurality of serially connected cells. The lowest node of the plurality of cells and the first voltage detection circuit are connected by the two lines of a voltage detection line and a negative power supply line. The lowest node of the plurality of cells and the second voltage detection circuit are connected by a single wire serving as both of a voltage detection line and a negative power supply line.
    Type: Application
    Filed: April 19, 2017
    Publication date: July 22, 2021
    Applicants: SANYO Electric Co., Ltd., SANYO Electric Co., Ltd.
    Inventors: Kimihiko Furukawa, Jun Asakura
  • Patent number: 10680448
    Abstract: A voltage detection circuit detects the voltage of a plurality of serially connected cells in a power storage unit. The voltage detection circuit receives a supply of a power supply voltage from both ends of the plurality of cells. A DC-DC converter converts the voltage between both ends of the plurality of cells into another DC voltage. An adjustment circuit adjusts the power consumption of the plurality of cells. The adjustment circuit operates using the DC voltage generated by the DC-DC converter as the power supply voltage.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: June 9, 2020
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Junya Yano, Tomoyuki Matsubara, Hidetsugu Mukae, Jun Asakura
  • Patent number: 10627453
    Abstract: A integrated circuit includes a plurality of first connection terminals (410) and second connection terminals (420) for receiving an input of electrical signals, a first detection section, a second detection section, a plurality of switches (432), and a switch control section (430). The first detection section is connected to first connection terminals (410) and obtains input electrical signals. The second detection section is connected to second connection terminals (420). Each switch (432) connects adjacent second connection terminals (420) among second connection terminals (420) to each other, and are connected to each other in series. Switch control section (430) controls to turn off switches (432) and allows electrical signals input to second connection terminals (420) to be input to the second detection section, and controls to turn on any switch among switches (432) to bring adjacent second connection terminals (420) into electrical continuity.
    Type: Grant
    Filed: July 3, 2015
    Date of Patent: April 21, 2020
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Jun Asakura, Kimihiko Furukawa, Tomoyuki Matsubara
  • Publication number: 20190074699
    Abstract: A voltage detection circuit detects the voltage of a plurality of serially connected cells in a power storage unit. The voltage detection circuit receives a supply of a power supply voltage from both ends of the plurality of cells. A DC-DC converter converts the voltage between both ends of the plurality of cells into another DC voltage. An adjustment circuit adjusts the power consumption of the plurality of cells. The adjustment circuit operates using the DC voltage generated by the DC-DC converter as the power supply voltage.
    Type: Application
    Filed: October 5, 2016
    Publication date: March 7, 2019
    Applicants: Sanyo Electric Co., Ltd., Sanyo Electric Co., Ltd.
    Inventors: Junya Yano, Tomoyuki Matsubara, Hidetsugu Mukae, Jun Asakura
  • Patent number: 10048323
    Abstract: A power supply device includes: an assembled battery that is configured of N pieces of battery cells connected in series; (N+1) pieces of measurement lines that obtain analog signals corresponding to terminal potentials of the battery cells; a filter circuit that attenuates a specified frequency component of the inputted analog signals and outputs; and an analog/digital converter that converts the analog signals outputted from the filter circuit into digital signals. The filter circuit is configured of: (N+1) pieces of input terminals; (N+1) pieces of output terminals; (N+1) pieces of filter resistors; and (N+1) pieces of filter capacitors of which one ends respectively connected between the filter resistors and the output terminals and the other ends are connected to each other in common.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: August 14, 2018
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Jun Asakura, Tomoyuki Matsubara
  • Publication number: 20170315181
    Abstract: A integrated circuit includes a plurality of first connection terminals (410) and second connection terminals (420) for receiving an input of electrical signals, a first detection section, a second detection section, a plurality of switches (432), and a switch control section (430). The first detection section is connected to first connection terminals (410) and obtains input electrical signals. The second detection section is connected to second connection terminals (420). Each switch (432) connects adjacent second connection terminals (420) among second connection terminals (420) to each other, and are connected to each other in series. Switch control section (430) controls to turn off switches (432) and allows electrical signals input to second connection terminals (420) to be input to the second detection section, and controls to turn on any switch among switches (432) to bring adjacent second connection terminals (420) into electrical continuity.
    Type: Application
    Filed: July 3, 2015
    Publication date: November 2, 2017
    Inventors: JUN ASAKURA, KIMIHIKO FURUKAWA, TOMOYUKI MATSUBARA
  • Publication number: 20170038434
    Abstract: A power supply device includes: an assembled battery (200) that is configured of N pieces of battery cells connected in series; (N+1) pieces of measurement lines (DL) that obtain analog signals corresponding to terminal potentials of the battery cells; a filter circuit (300) that attenuates a specified frequency component of the inputted analog signals and outputs; and an analog/digital converter (460) that converts the analog signals outputted from the filter circuit (300) into digital signals. The filter circuit (300) is configured of: (N+1) pieces of input terminals (310); (N+1) pieces of output terminals (320); (N+1) pieces of filter resistors (340); and (N+1) pieces of filter capacitors (360) of which one ends respectively connected between the filter resistors (340) and the output terminals (320) and the other ends are connected to each other in common.
    Type: Application
    Filed: April 24, 2015
    Publication date: February 9, 2017
    Inventors: JUN ASAKURA, TOMOYUKI MATSUBARA
  • Patent number: 9447623
    Abstract: A door checker includes a stopper provided to a tip portion of a check lever and defining a door opening limit by engaging with stopper surfaces provided to an outer surface of a peripheral edge of a through-hole in a support body. The stopper is formed from paired first stopper portions engageable with paired first stopper surfaces arranged side-by-side with the through-hole therebetween, and paired second stopper portions engageable with paired second stopper surfaces. The first stopper portions are formed from metal-made protrusions integrally projecting from opposite sides of a tip portion of a lever core plate, and projecting from an outer surface of a synthetic resin-made covering portion. The second stopper portions are formed from synthetic resin-made portions of the outer surface located between the first stopper portions and swollen on opposite sides in a direction orthogonal to an arrangement direction of the first stopper portions.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: September 20, 2016
    Assignee: Rikenkaki Kogyo Kabushiki Kaisha
    Inventors: Yuji Murayama, Jun Asakura
  • Publication number: 20160024828
    Abstract: A door checker includes a stopper provided to a tip portion of a check lever and defining a door opening limit by engaging with stopper surfaces provided to an outer surface of a peripheral edge of a through-hole in a support body. The stopper is formed from paired first stopper portions engageable with paired first stopper surfaces arranged side-by-side with the through-hole therebetween, and paired second stopper portions engageable with paired second stopper surfaces. The first stopper portions are formed from metal-made protrusions integrally projecting from opposite sides of a tip portion of a lever core plate, and projecting from an outer surface of a synthetic resin-made covering portion. The second stopper portions are formed from synthetic resin-made portions of the outer surface located between the first stopper portions and swollen on opposite sides in a direction orthogonal to an arrangement direction of the first stopper portions.
    Type: Application
    Filed: July 9, 2015
    Publication date: January 28, 2016
    Inventors: Yuji MURAYAMA, Jun ASAKURA
  • Patent number: 8685554
    Abstract: A battery system includes a battery module that has a plurality of batteries which are provided with release portions each for releasing internal gas when an internal pressure is increased, and an exhaust portion which is provided with an opening portion and guides gas released from the release portions to the opening portion, a non-resettable switch element which is provided at a position where the guided gas passes in a vicinity of the opening portion, and is changed from a first state preset as one of an opened state and a closed state into a second state as the other one of the opened state and the closed state when a preset reference temperature or higher is reached, and a high-temperature abnormality determination unit which determines that the battery module has an abnormality when the switch element is in the second state.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: April 1, 2014
    Assignee: Panasonic Corporation
    Inventors: Jun Asakura, Shunsuke Yasui, Hiroshi Takasaki
  • Publication number: 20140021925
    Abstract: A battery power supply apparatus has: a battery including a parallel circuit that has series circuits connected in parallel, each of the series circuits having a secondary battery and a cutoff element connected in series, each of the cutoff elements becoming a disconnected state, when an abnormality occurs in the secondary battery; a first detector detecting an overall current value flowing through the battery block; a second detector connected in parallel to the series circuits to detect a block voltage value of the battery block; a setting portion setting a current limit value; and an estimation portion estimating, as the number of valid batteries, the number of cutoff elements which have not become disconnected states, based on the overall current value and the block voltage value. The setting portion sets the current limit value so that the current limit value decreases as the number of valid batteries decreases.
    Type: Application
    Filed: March 6, 2012
    Publication date: January 23, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Jun Asakura, Mutsuhiko Takeda, Yoshiki Ohsawa
  • Patent number: 8487631
    Abstract: It is intended to provide a battery module having a long life by designing such that deterioration proceeds evenly among battery cells. Disclosed is a battery module including a plurality of battery groups being connected in series and each comprising a plurality of battery cells connected in parallel, wherein: a positive electrode terminal and a negative electrode terminal are provided; the battery groups are connected to each other by a plurality of electrically conductive strips; and an electrical resistance value of the conductive strip arranged at a position near a virtual line drawn between the positive electrode terminal and the negative electrode terminal is high, and an electrical resistance value of the conductive strip arranged at a position other than the position near the virtual line is low, the electrical resistance value being measured in a direction of charge and discharge current flow.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: July 16, 2013
    Assignee: Panasonic Corporation
    Inventors: Shin-ichi Yuasa, Jun Asakura
  • Patent number: 8334699
    Abstract: A battery internal short-circuit detection apparatus includes: a voltage detection unit for detecting a terminal voltage of the battery; a current detection unit for detecting a discharging current of the battery; a voltage drop and recovery detection unit for detecting a momentary voltage drop of the battery and a recovery from the voltage drop, in response to a result of detection performed by the voltage detection unit; and a determination unit for determining that an internal short circuit has occurred, when a maximum value of the discharging current detected by the current detection unit between the voltage drop and the recovery is equal to or lower than a threshold current.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: December 18, 2012
    Assignee: Panasonic Corporation
    Inventors: Jun Asakura, Takuya Nakashima, Toshiyuki Nakatsuji, Masato Fujikawa
  • Publication number: 20120276423
    Abstract: A battery system includes a battery module that has a plurality of batteries which are provided with release portions each for releasing internal gas when an internal pressure is increased, and an exhaust portion which is provided with an opening portion and guides gas released from the release portions to the opening portion, a non-resettable switch element which is provided at a position where the guided gas passes in a vicinity of the opening portion, and is changed from a first state preset as one of an opened state and a closed state into a second state as the other one of the opened state and the closed state when a preset reference temperature or higher is reached, and a high-temperature abnormality determination unit which determines that the battery module has an abnormality when the switch element is in the second state.
    Type: Application
    Filed: July 26, 2011
    Publication date: November 1, 2012
    Inventors: Jun Asakura, Shunsuke Yasui, Hiroshi Takasaki
  • Publication number: 20120242290
    Abstract: The battery power source apparatus includes a battery block formed by parallel-connecting series circuits each formed of a rechargeable battery and an interrupting device, a parallel circuit formed by parallel-connecting series circuits respectively formed of the interrupting devices and first resistors having respective one ends connected to connection points between the rechargeable batteries and the interrupting devices of the series circuits, and respective other ends connected to each other, a second resistor having one end connected to a connection point of the respective other ends, a power source unit applying voltage to a series circuit of the parallel circuit and the second resistor, a voltage divider ratio calculating unit calculating a voltage divider ratio between the parallel circuit and the second resistor, and a judging unit determining presence or absence of an activated interrupting device of the plurality of interrupting devices based on the voltage divider ratio.
    Type: Application
    Filed: June 15, 2011
    Publication date: September 27, 2012
    Inventor: Jun Asakura
  • Patent number: 8111035
    Abstract: A charging system is provided with a secondary battery, a charging current supplier for supplying a charging current to the secondary battery, an internal resistance detector for detecting the resistance value of the internal resistance of the secondary battery, and a charge controller for increasing the charging current to be supplied to the secondary battery by the charging current supplier as the resistance value detected by the internal resistance detector decreases.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: February 7, 2012
    Assignee: Panasonic Corporation
    Inventors: Hajime Nishino, Jun Asakura, Yoshio Nakatani
  • Publication number: 20120013340
    Abstract: It is intended to provide a battery module having a long life by designing such that deterioration proceeds evenly among battery cells. Disclosed is a battery module including a plurality of battery groups being connected in series and each comprising a plurality of battery cells connected in parallel, wherein: a positive electrode terminal and a negative electrode terminal are provided; the battery groups are connected to each other by a plurality of electrically conductive strips; and an electrical resistance value of the conductive strip arranged at a position near a virtual line drawn between the positive electrode terminal and the negative electrode terminal is high, and an electrical resistance value of the conductive strip arranged at a position other than the position near the virtual line is low, the electrical resistance value being measured in a direction of charge and discharge current flow.
    Type: Application
    Filed: December 6, 2010
    Publication date: January 19, 2012
    Inventors: Shin-ichi Yuasa, Jun Asakura
  • Publication number: 20110291619
    Abstract: A battery power source device includes a battery block configured by parallel-connecting a plurality of series-circuits each constituted of a secondary battery, and a cut-off element which is operable to be in a cut-off state where a charging and discharging path of the secondary battery is cut off; a current limit value setting section which sets a current limit value representing an upper allowable limit of an entire current value as a current value of a current flowing through the battery block; and an available battery number detecting section which detects the number of cut-off elements which are not in the cut-off state, out of the plurality of cut-off elements included in the battery block, as the available battery number. In this arrangement, the current limit value setting section sets the current limit value so that the current limit value is decreased, as the available battery number detected by the available battery number detecting section is reduced.
    Type: Application
    Filed: October 19, 2010
    Publication date: December 1, 2011
    Inventor: Jun Asakura
  • Publication number: 20110195284
    Abstract: The battery module includes a plurality of battery units, a housing, a wiring board, and a lid. The battery unit is composed of one or more battery cells each having a vent mechanism. At least one surface of the housing is an open end. The housing has a plurality of storage parts partitioned by one or more partition walls. Each battery unit is stored in each storage part. The wiring board covers the open end of the housing, is disposed at the vent mechanism side of the cell, and has connection terminals connected to the battery units. The lid covers the open end of the housing and the wiring board, and has an open part. Through holes are provided on the wiring board in positions facing the battery units and in a different region from that of the connection terminals.
    Type: Application
    Filed: December 10, 2009
    Publication date: August 11, 2011
    Inventors: Shunsuke Yasui, Takuya Nakashima, Yasushi Hirakawa, Jun Asakura
  • Patent number: 7801579
    Abstract: A positional relation sensing section (23) of a control section (22) senses the relative position relation between first and second cabinets (30 and 31) based on output of magnetic sensing elements (20a and 20b) and outputs a position determination signal (S3). If the state is “transition state” in which one cabinet slides and moves based on the position determination signal (S3), a voice control section (24) outputs a mute control signal (S4) to a voice processing section (11) as a muting instruction. Accordingly, all outputs of voice signals collected by a microphone (10) to a receiver (12), a loudspeaker (13), a wireless communication section (16), a short-range wireless communication section (17), and a voice output terminal (14) are stopped.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: September 21, 2010
    Assignee: Panasonic Corporation
    Inventor: Jun Asakura