Patents by Inventor Utaka Kamishima
Utaka Kamishima 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: 9627902Abstract: A method for controlling charge after judging as to whether a charging cable CC connected to a charging inlet E1 of a vehicle conforms to standards has detecting whether a control signal is outputted from the charging cable CC and whether power is supplied from the charging cable CC after the charging cable CC is connected to the charging inlet E1 until a main switch E5, E6 of a power feed line E8 of the vehicle is switched ON; judging that the charging capable CC does not conform to the standards at least when no control signal is detected and the power is detected; and forbidding the charge or limiting a charging current through the charging cable CC when judging that the charging cable CC does not conform to the standards.Type: GrantFiled: June 9, 2011Date of Patent: April 18, 2017Assignee: NISSAN MOTOR CO., LTD.Inventor: Utaka Kamishima
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Patent number: 9379564Abstract: A charging control method for controlling a charge operation to a storage unit E2 of a vehicle, using a charging cable CC that is connected to a charging inlet E1 of the vehicle and supplies power to the storage unit E2 from an external power supply BP provided outside the vehicle, the method has detecting connection of the charging cable CC to the charging inlet E1, detecting a command signal of a disconnection command unit C22 of the charging cable CC, pausing the charge operation to the storage unit E2 while maintaining a closed state of relay switches C42, E5, E6 of a vehicle side power supply line for only a predetermined time when detecting the command signal of the disconnection command unit C22 which indicates the disconnection in a state where the charging cable CC is connected to the charging inlet E1, and restarting the charge operation to the storage unit E2 when detecting a command signal of the disconnection command unit C22 which indicates cancel of the disconnection during the predetermined tiType: GrantFiled: June 9, 2011Date of Patent: June 28, 2016Assignee: NISSAN MOTOR CO., LTD.Inventor: Utaka Kamishima
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Publication number: 20130088200Abstract: A charging control method for controlling a charge operation to a storage unit E2 of a vehicle, using a charging cable CC that is connected to a charging inlet E1 of the vehicle and supplies power to the storage unit E2 from an external power supply BP provided outside the vehicle, the method has detecting connection of the charging cable CC to the char in inlet E1, detecting a command signal of a disconnection command unit C22 of the charging cable CC, pausing the charge operation to the storage unit E2 while maintaining a closed state of relay switches C42, E5, E6 of a vehicle side power supply line for only a predetermined time when detecting the command signal of the disconnection command unit C22 which indicates the disconnection in a state where the charging cable CC is connected to the charging inlet E1, and restarting the charge operation to the storage unit E2 when detecting a command signal of the disconnection command unit C22 which indicates cancel of the disconnection during the predetermined timType: ApplicationFiled: June 9, 2011Publication date: April 11, 2013Inventor: Utaka Kamishima
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Publication number: 20130082655Abstract: A method for controlling charge after judging as to whether a charging cable CC connected to a charging inlet E1 of a vehicle conforms to standards has detecting whether a control signal is outputted from the charging cable CC and whether power is supplied from the charging cable CC after the charging cable CC is connected to the charging inlet E1 until a main switch E5, E6 of a power feed line E8 of the vehicle is switched ON; judging that the charging capable CC does not conform to the standards at least when no control signal is detected and the power is detected; and forbidding the charge or limiting a charging current through the charging cable CC when judging that the charging cable CC does not conform to the standards.Type: ApplicationFiled: June 9, 2011Publication date: April 4, 2013Inventor: Utaka Kamishima
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Patent number: 8258753Abstract: A secondary battery remaining capacity estimating apparatus basically includes a secondary battery, a charge/discharge determining section, a remaining capacity estimating section, a remaining capacity indicating section and a remaining capacity indication limiting section. The charge/discharge determining section determines if the secondary battery is charging or discharging. The remaining capacity estimating section estimates a remaining electric power capacity of the secondary battery. The remaining capacity indicating section indicates a remaining capacity of the secondary battery based on an estimation value by the remaining capacity estimating section. The remaining capacity indication limiting section limits a decrease of a remaining capacity indicated upon determining that the secondary battery is charging and the estimation value will decrease, and limits an increase of a remaining capacity indicated upon determining that the secondary battery is discharging and the estimation value will increase.Type: GrantFiled: March 2, 2009Date of Patent: September 4, 2012Assignee: Nissan Motor Co., Ltd.Inventors: Kouichi Akabori, Utaka Kamishima
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Publication number: 20100289454Abstract: A secondary battery remaining capacity estimating apparatus basically includes a secondary battery (1), a charge/discharge determining section (2005), a remaining capacity estimating section (20), a remaining capacity indicating section (7) and a remaining capacity indication limiting section (21). The charge/discharge determining section (2005) determines if the secondary battery is charging or discharging. The remaining capacity estimating section (20) estimates a remaining electric power capacity of the secondary battery. The remaining capacity indicating section (7) indicates a remaining capacity of the secondary battery based on an estimation value by the remaining capacity estimating section (20).Type: ApplicationFiled: March 2, 2009Publication date: November 18, 2010Applicant: NISSAN MOTOR CO., LTD.Inventors: Kouichi Akabori, Utaka Kamishima
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Patent number: 7688032Abstract: A battery remaining capacity detecting apparatus includes a remaining capacity calculating section, first and second target remaining capacity calculating sections and a remaining capacity revising section. The first and second target remaining capacity calculating sections are configured to calculate first and second target remaining capacities using first and second calculation processes when first and second prescribed battery related conditions are satisfied, respectively. The second calculating process has a lower accuracy than the first calculation process, and the second prescribed battery related condition is satisfied with a higher frequency than the first prescribed battery related condition.Type: GrantFiled: July 30, 2007Date of Patent: March 30, 2010Assignee: Nissan Motor Co., Ltd.Inventors: Utaka Kamishima, Shinsuke Nakazawa
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Patent number: 7531990Abstract: An apparatus and method for detecting total voltage of an assembled battery including a number of serially-connected electric cells. Voltages of the respective cells are detected and added up, correlation between the resulting total voltage and a total voltage obtained by detecting the voltage of the assembled battery directly from its terminals is obtained, and a corrective arithmetic operation is carried out inside the device to correct the total voltage obtained through direct detection. The total voltage is detected with a high degree of accuracy without the need for individual adjustment operations using a variable resistance, high-accuracy external tester.Type: GrantFiled: July 26, 2006Date of Patent: May 12, 2009Assignee: Nissan Motor Co., Ltd.Inventors: Tsuyoshi Morita, Utaka Kamishima
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Patent number: 7379833Abstract: After a vehicle is started up, a voltage value detected by a voltage sensor while a voltage detection target and the voltage sensor are disconnected from each other is obtained as an offset voltage, and the voltage value detected by the voltage sensor is corrected based upon the offset voltage thus obtained.Type: GrantFiled: December 15, 2005Date of Patent: May 27, 2008Assignee: Nissan Motor Co., Ltd.Inventor: Utaka Kamishima
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Publication number: 20080030169Abstract: A battery remaining capacity detecting apparatus includes a remaining capacity calculating section, first and second target remaining capacity calculating sections and a remaining capacity revising section. The first and second target remaining capacity calculating sections are configured to calculate first and second target remaining capacities using first and second calculation processes when first and second prescribed battery related conditions are satisfied, respectively. The second calculating process has a lower accuracy than the first calculation process, and the second prescribed battery related condition is satisfied with a higher frequency than the first prescribed battery related condition.Type: ApplicationFiled: July 30, 2007Publication date: February 7, 2008Applicant: Nissan Motor Co., Ltd.Inventors: Utaka Kamishima, Shinsuke Nakazawa
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Publication number: 20070024240Abstract: An apparatus and method for detecting total voltage of an assembled battery including a number of serially-connected electric cells. Voltages of the respective cells are detected and added up, correlation between the resulting total voltage and a total voltage obtained by detecting the voltage of the assembled battery directly from its terminals is obtained, and a corrective arithmetic operation is carried out inside the device to correct the total voltage obtained through direct detection. The total voltage is detected with a high degree of accuracy without the need for individual adjustment operations using a variable resistance, high-accuracy external tester.Type: ApplicationFiled: July 26, 2006Publication date: February 1, 2007Applicant: Nissan Motor Co., Ltd.Inventors: Tsuyoshi Morita, Utaka Kamishima
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Patent number: 7138775Abstract: A battery pack of a series combination of cell units is connected with a motor drive control circuit to drive a traction motor for a vehicle. A current sensor senses a discharge/charge current of the battery pack, and a voltage detecting circuit senses a voltage between two separate points in the series combination of the battery pack. A memory section stores a reference voltage drop quantity representing a decrease in voltage during a predetermined time interval between the two separate points. An offset detecting section compares an actual voltage drop quantity sensed by the voltage detecting circuit, with the reference voltage drop quantity, thereby detects a non-discharge/charge-current state of the current sensor, and reserves an output of the current sensor, as an offset quantity upon the detection. A correcting section corrects a sensed value of the discharge/charge current with the reserved offset quantity.Type: GrantFiled: June 26, 2003Date of Patent: November 21, 2006Assignee: Nissan Motor Co., Ltd.Inventors: Tomonaga Sugimoto, Yuji Nakada, Utaka Kamishima, Tsuyoshi Morita
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Publication number: 20060136163Abstract: After a vehicle is started up, a voltage value detected by a voltage sensor while a voltage detection target and the voltage sensor are disconnected from each other is obtained as an offset voltage, and the voltage value detected by the voltage sensor is corrected based upon the offset voltage thus obtained.Type: ApplicationFiled: December 15, 2005Publication date: June 22, 2006Inventor: Utaka Kamishima
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Publication number: 20040018419Abstract: A battery pack of a series combination of cell units is connected with a motor drive control circuit to drive a traction motor for a vehicle. A current sensor senses a discharge/charge current of the battery pack, and a voltage detecting circuit senses a voltage between two separate points in the series combination of the battery pack. A memory section stores a reference voltage drop quantity representing a decrease in voltage during a predetermined time interval between the two separate points. An offset detecting section compares an actual voltage drop quantity sensed by the voltage detecting circuit, with the reference voltage drop quantity, thereby detects a non-discharge/charge-current state of the current sensor, and reserves an output of the current sensor, as an offset quantity upon the detection. A correcting section corrects a sensed value of the discharge/charge current with the reserved offset quantity.Type: ApplicationFiled: June 26, 2003Publication date: January 29, 2004Applicant: NISSAN MOTOR CO., LTD.Inventors: Tomonaga Sugimoto, Yuji Nakada, Utaka Kamishima, Tsuyoshi Morita