Patents by Inventor Sunao HORITAKE
Sunao HORITAKE 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).
-
Patent number: 11789085Abstract: A battery diagnosis device mounted on a vehicle includes a processor that acquires information about a battery and executes diagnosis of the state of the battery. The processor is configured to determine whether there is abnormality about a first item based on a result of a determination of whether a first state is matched, and the determination of whether the first state is matched is based on the information about the battery. The processor is configured to end the diagnosis of the battery, when the processor determines that there is no abnormality about the first item. The processor is configured to continue the diagnosis of the battery and determine whether there is abnormality about the first item, as a second determination, when the processor determines that there is abnormality about the first item.Type: GrantFiled: March 30, 2021Date of Patent: October 17, 2023Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO TEN LimitedInventors: Kohei Takahashi, Takayuki Akaishi, Sunao Horitake, Yuhki Shiozumi
-
Patent number: 11518437Abstract: A vehicular control device includes a determining unit configured to determine whether an absolute value of a steering angle as a rotation angle of a steering wheel exceeds a first threshold value, an estimating unit configured to estimate a lithium deposition amount as an amount of lithium metal deposited on the lithium-ion battery by regenerative current flowing into the lithium-ion battery, based on vehicle information obtained from the vehicle, when the determining unit determines that the absolute value of the steering angle exceeds the first threshold value, and a reporting command unit configured to give a command to report that the vehicle is in a first state, based on the lithium deposition amount estimated by the estimating unit.Type: GrantFiled: January 7, 2021Date of Patent: December 6, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Saeko Kurachi, Sunao Horitake
-
Publication number: 20220385078Abstract: A charging control device includes a processor. The processor is configured to control charging of a plurality of battery cells that configure an assembled battery, during charging, in a case in which a voltage value of a battery cell having a highest voltage among the plurality of battery cells is equal to or greater than a threshold value and a current value is equal to or less than a set value, measure a closed circuit voltage (CCV) of the plurality of battery cells, and for a battery cell for which a potential difference with respect to a voltage of a battery cell with a lowest measured CCV is equal to or greater than a predetermined value, execute discharging processing so as to eliminate the potential difference.Type: ApplicationFiled: May 17, 2022Publication date: December 1, 2022Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO TEN LimitedInventors: Sunao HORITAKE, Kohei TAKAHASHI, Toshiki SHINOHARA, Hiroki ONOYAMA, Takaya KOSHII, Yuki SHIOZUMI
-
Patent number: 11508997Abstract: A battery control device, which controls a battery, including cell blocks connected in series in which battery cells are connected in parallel, to execute voltage equalization of the cell blocks, includes a detection unit that detects voltage between positive and negative electrodes of each cell block, a voltage equalization circuit that includes a plurality of discharge units in which at least one discharge element and a switching element are connected in series, and a control unit that controls the switching elements to equalize the voltages of the cell blocks. The discharge units are connected between the positive and negative electrodes of the cell blocks, respectively. The control unit controls the switching elements at a predetermined timing to execute discharge of the cell blocks, and determines whether there is an abnormality in the cell blocks based on voltage differences between the cell blocks before and after the discharge.Type: GrantFiled: July 16, 2020Date of Patent: November 22, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takayuki Akaishi, Sunao Horitake
-
Patent number: 11396242Abstract: A vehicle control device configured to control charge and discharge of a battery mounted on a vehicle includes an obtaining unit configured to obtain a parking time of the vehicle, a setting unit configured to derive a charge voltage of the battery based on at least the parking time obtained by the obtaining unit, and a voltage control unit configured to control charge of the battery based on the charge voltage of the battery derived by the setting unit when the vehicle is traveling.Type: GrantFiled: August 24, 2020Date of Patent: July 26, 2022Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO TEN LimitedInventors: Takayuki Akaishi, Sunao Horitake, Kohei Takahashi, Yuhki Shiozumi
-
Publication number: 20220155382Abstract: A battery monitoring device monitoring a battery includes an acquisition unit configured to acquire a physical quantity indicating a state of the battery, a decision unit configured to decide whether the battery is in a first state based on the physical quantity acquired by the acquisition unit, and a controller configured to control switching of a relay provided between the battery and a predetermined device connected to the battery and transition between a first mode in which the decision by the decision unit is performed and a second mode in which the decision by the decision unit is not performed as a control mode of the battery. The controller is configured to, when the decision unit decides that the battery is in the first state in the first mode, prohibit transition from the first mode to the second mode and control the relay to a non-conductive state.Type: ApplicationFiled: September 21, 2021Publication date: May 19, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei TAKAHASHI, Sunao HORITAKE
-
Patent number: 11203378Abstract: A control device performs steering control of a vehicle by electric power of a first battery and a second battery and includes a calculation unit that calculates a total torque to be produced and a distribution controller that controls output of the first motor and the second motor such that a sum of a first torque produced by the first motor and a second torque produced by the second motor is the total torque. When neither the first system nor the second system is defective, the distribution controller sets the first torque and the second torque based on a state of the first battery and a state of the second battery such that predetermined performance of the first battery and the second battery is within an allowable range.Type: GrantFiled: May 29, 2019Date of Patent: December 21, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Sunao Horitake
-
Patent number: 11148546Abstract: A power supply control device that estimates a full charge capacity of a battery includes a determination unit that determines whether there is a need to correct a currently estimated full charge capacity when a state of charge of the battery is equal to or greater than a first predetermined value at a timing at which a power supply of the vehicle is turned OFF, a power transfer unit that transfers a predetermined power from the battery to another battery when the determination unit determines that there is a need to correct the currently estimated full charge capacity, and a capacity estimation unit that performs a predetermined full charge capacity estimating process on the battery at a timing at which the power supply of the vehicle is turned ON after power transfer by the power transfer unit or during the power transfer by the power transfer unit.Type: GrantFiled: June 6, 2019Date of Patent: October 19, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takayuki Akaishi, Sunao Horitake
-
Publication number: 20210311124Abstract: A battery diagnosis device mounted on a vehicle includes a processor that acquires information about a battery and executes diagnosis of the state of the battery. The processor is configured to determine whether there is abnormality about a first item based on a result of a determination of whether a first state is matched, and the determination of whether the first state is matched is based on the information about the battery. The processor is configured to end the diagnosis of the battery, when the processor determines that there is no abnormality about the first item. The processor is configured to continue the diagnosis of the battery and determine whether there is abnormality about the first item, as a second determination, when the processor determines that there is abnormality about the first item.Type: ApplicationFiled: March 30, 2021Publication date: October 7, 2021Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO TEN LimitedInventors: Kohei TAKAHASHI, Takayuki AKAISHI, Sunao HORITAKE, Yuhki SHIOZUMI
-
Patent number: 11137451Abstract: An auxiliary device battery sensor measures current and voltage of an auxiliary device battery. On the basis of a peak value and frequency of current measured by the auxiliary device battery sensor at a time when the current and the voltage of the auxiliary device battery change in accordance with requirements of a load, a monitoring ECU sets a waveform for measurement that is for measuring resistance of the auxiliary device battery. Further, the monitoring ECU controls a DDC that is connected to the auxiliary device battery, such that a waveform of the current of the auxiliary device battery becomes the waveform for measurement. The monitoring ECU estimates resistance of the auxiliary device battery on the basis of current and voltage measured by the auxiliary device battery sensor at a time of controlling the DDC.Type: GrantFiled: March 5, 2020Date of Patent: October 5, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Takahashi, Sunao Horitake, Takayuki Akaishi
-
Publication number: 20210229744Abstract: A vehicular control device includes a determining unit configured to determine whether an absolute value of a steering angle as a rotation angle of a steering wheel exceeds a first threshold value, an estimating unit configured to estimate a lithium deposition amount as an amount of lithium metal deposited on the lithium-ion battery by regenerative current flowing into the lithium-ion battery, based on vehicle information obtained from the vehicle, when the determining unit determines that the absolute value of the steering angle exceeds the first threshold value, and a reporting command unit configured to give a command to report that the vehicle is in a first state, based on the lithium deposition amount estimated by the estimating unit.Type: ApplicationFiled: January 7, 2021Publication date: July 29, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Saeko KURACHI, Sunao HORITAKE
-
Publication number: 20210135298Abstract: A battery control device, which controls a battery, including cell blocks connected in series in which battery cells are connected in parallel, to execute voltage equalization of the cell blocks, includes a detection unit that detects voltage between positive and negative electrodes of each cell block, a voltage equalization circuit that includes a plurality of discharge units in which at least one discharge element and a switching element are connected in series, and a control unit that controls the switching elements to equalize the voltages of the cell blocks. The discharge units are connected between the positive and negative electrodes of the cell blocks, respectively. The control unit controls the switching elements at a predetermined timing to execute discharge of the cell blocks, and determines whether there is an abnormality in the cell blocks based on voltage differences between the cell blocks before and after the discharge.Type: ApplicationFiled: July 16, 2020Publication date: May 6, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takayuki AKAISHI, Sunao HORITAKE
-
Publication number: 20210061119Abstract: A vehicle control device configured to control charge and discharge of a battery mounted on a vehicle includes an obtaining unit configured to obtain a parking time of the vehicle, a setting unit configured to derive a charge voltage of the battery based on at least the parking time obtained by the obtaining unit, and a voltage control unit configured to control charge of the battery based on the charge voltage of the battery derived by the setting unit when the vehicle is traveling.Type: ApplicationFiled: August 24, 2020Publication date: March 4, 2021Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO TEN LimitedInventors: Takayuki AKAISHI, Sunao HORITAKE, Kohei TAKAHASHI, Yuhki SHIOZUMI
-
Publication number: 20200341068Abstract: An auxiliary device battery sensor measures current and voltage of an auxiliary device battery. On the basis of a peak value and frequency of current measured by the auxiliary device battery sensor at a time when the current and the voltage of the auxiliary device battery change in accordance with requirements of a load, a monitoring ECU sets a waveform for measurement that is for measuring resistance of the auxiliary device battery. Further, the monitoring ECU controls a DDC that is connected to the auxiliary device battery, such that a waveform of the current of the auxiliary device battery becomes the waveform for measurement. The monitoring ECU estimates resistance of the auxiliary device battery on the basis of current and voltage measured by the auxiliary device battery sensor at a time of controlling the DDC.Type: ApplicationFiled: March 5, 2020Publication date: October 29, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei TAKAHASHI, Sunao HORITAKE, Takayuki AKAISHI
-
Patent number: 10601230Abstract: An electric power supply system for a vehicle includes a first battery, a second battery connected in parallel with the first battery, a voltage sensor configured to detect a voltage value of the second battery, a current sensor configured to detect a current value of the second battery, an electronic control unit configured to make a voltage of the alternator fluctuate according to a predetermined voltage waveform, and calculate internal resistance of the second battery using the voltage value and the current value of the second battery respectively detected by the voltage sensor and the current sensor while the electronic control unit is making the voltage of the alternator fluctuate according to the predetermined voltage waveform.Type: GrantFiled: October 5, 2018Date of Patent: March 24, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sunao Horitake, Hiroshi Nate, Yasuharu Terada
-
Publication number: 20200047634Abstract: A power supply control device that estimates a full charge capacity of a battery includes a determination unit that determines whether there is a need to correct a currently estimated full charge capacity when a state of charge of the battery is equal to or greater than a first predetermined value at a timing at which a power supply of the vehicle is turned OFF, a power transfer unit that transfers a predetermined power from the battery to another battery when the determination unit determines that there is a need to correct the currently estimated full charge capacity, and a capacity estimation unit that performs a predetermined full charge capacity estimating process on the battery at a timing at which the power supply of the vehicle is turned ON after power transfer by the power transfer unit or during the power transfer by the power transfer unit.Type: ApplicationFiled: June 6, 2019Publication date: February 13, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takayuki AKAISHI, Sunao HORITAKE
-
Publication number: 20200023888Abstract: A control device performs steering control of a vehicle by electric power of a first battery and a second battery and includes a calculation unit that calculates a total torque to be produced and a distribution controller that controls output of the first motor and the second motor such that a sum of a first torque produced by the first motor and a second torque produced by the second motor is the total torque. When neither the first system nor the second system is defective, the distribution controller sets the first torque and the second torque based on a state of the first battery and a state of the second battery such that predetermined performance of the first battery and the second battery is within an allowable range.Type: ApplicationFiled: May 29, 2019Publication date: January 23, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Sunao HORITAKE
-
Publication number: 20190044344Abstract: An electric power supply system for a vehicle includes a first battery, a second battery connected in parallel with the first battery, a voltage sensor configured to detect a voltage value of the second battery, a current sensor configured to detect a current value of the second battery, an electronic control unit configured to make a voltage of the alternator fluctuate according to a predetermined voltage waveform, and calculate internal resistance of the second battery using the voltage value and the current value of the second battery respectively detected by the voltage sensor and the current sensor while the electronic control unit is making the voltage of the alternator fluctuate according to the predetermined voltage waveform.Type: ApplicationFiled: October 5, 2018Publication date: February 7, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sunao Horitake, Hiroshi Nate, Yasuharu Terada
-
Patent number: 10155491Abstract: An electric power supply device includes first and second batteries respectively supplying electric power to a plurality of load instruments mounted on a vehicle, an electric power generator capable of charging the first battery and the second battery by regenerative electric power generation, and control means for controlling the electric power generator so that a charging electric power amount of at least one of the first battery and the second battery based on the regenerative electric power generation is suppressed in a case where at least one of a high-load instrument and a backup target instrument is present among the plurality of load instruments and the electric power generator is performing the regenerative electric power generation during the deceleration of the vehicle.Type: GrantFiled: August 6, 2015Date of Patent: December 18, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takeaki Suzuki, Michihiro Miyashita, Kazuhito Eshima, Hiroshi Nate, Sunao Horitake
-
Patent number: 10135264Abstract: An electric power supply system for a vehicle includes a first battery, a second battery connected in parallel with the first battery, a voltage sensor configured to detect a voltage value of the second battery, a current sensor configured to detect a current value of the second battery, an electronic control unit configured to make a voltage of the alternator fluctuate according to a predetermined voltage waveform, and calculate internal resistance of the second battery using the voltage value and the current value of the second battery respectively detected by the voltage sensor and the current sensor while the electronic control unit is making the voltage of the alternator fluctuate according to the predetermined voltage waveform.Type: GrantFiled: March 8, 2017Date of Patent: November 20, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sunao Horitake, Hiroshi Nate, Yasuharu Terada