Patents by Inventor Shuhei CHIZUWA

Shuhei CHIZUWA 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: 20240149713
    Abstract: Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).
    Type: Application
    Filed: January 10, 2024
    Publication date: May 9, 2024
    Inventor: Shuhei CHIZUWA
  • Patent number: 11904711
    Abstract: Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).
    Type: Grant
    Filed: March 28, 2023
    Date of Patent: February 20, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Shuhei Chizuwa
  • Publication number: 20230234454
    Abstract: Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).
    Type: Application
    Filed: March 28, 2023
    Publication date: July 27, 2023
    Inventor: Shuhei CHIZUWA
  • Patent number: 11652423
    Abstract: A switching power supply device according to an embodiment of the present disclosure includes: power supply circuits corresponding to phases of a polyphase AC power supply as an external power supply; a switching circuit configured to switch a connection destination of another power supply circuit other than a specific power supply circuit corresponding to a specific phase of the external power supply among the power supply circuits to a phase corresponding to the other power supply circuit or the specific phase; and a control unit configured to connect, to each phase of the external power supply connected to the switching power supply device, the other power supply circuit corresponding to the phase, and connect the other power supply circuit as a surplus to the specific phase when the number of phases of the external power supply is smaller than the number of the power supply circuits.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: May 16, 2023
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Shuhei Chizuwa
  • Patent number: 11652403
    Abstract: A switching power source device includes a plurality of power source circuits including a first power source circuit corresponding to a first phase of an external power source, and a second power source circuit corresponding to a second phase of the external power source that is different from the first phase; a first switching circuit capable of switching between a plurality of connection modes including a first mode of connecting the second power source circuit to the first phase in parallel with the first power source circuit, and a second mode of connecting the second power source circuit to the second phase; a memory; and a hardware processor coupled to the memory, the hardware processor being configured to open and close a switching element included in the first power source circuit and a switching element included in the second power source circuit, in different phases in the first mode.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: May 16, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Shuhei Chizuwa
  • Patent number: 11623531
    Abstract: Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: April 11, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Shuhei Chizuwa
  • Publication number: 20220097548
    Abstract: A vehicle according to the present disclosure includes a battery, a traveling motor, and an on-vehicle charger. The traveling motor is driven by power from the battery. The on-vehicle charger has a safety component including an opening and closing circuit and a control circuit. The opening and closing circuit opens and closes an electric circuit between a power supply source and the battery. The control circuit cuts off the electric circuit by the opening and closing circuit when electric leakage is detected by monitoring a current flowing through the electric circuit. The on-vehicle charger charges the battery using power supplied from the power supply source via a charging cable.
    Type: Application
    Filed: September 22, 2021
    Publication date: March 31, 2022
    Inventor: Shuhei CHIZUWA
  • Publication number: 20220060104
    Abstract: A switching power source device includes a plurality of power source circuits including a first power source circuit corresponding to a first phase of an external power source, and a second power source circuit corresponding to a second phase of the external power source that is different from the first phase; a first switching circuit capable of switching between a plurality of connection modes including a first mode of connecting the second power source circuit to the first phase in parallel with the first power source circuit, and a second mode of connecting the second power source circuit to the second phase; a memory; and a hardware processor coupled to the memory, the hardware processor being configured to open and close a switching element included in the first power source circuit and a switching element included in the second power source circuit, in different phases in the first mode.
    Type: Application
    Filed: August 5, 2021
    Publication date: February 24, 2022
    Inventor: Shuhei CHIZUWA
  • Patent number: 11038415
    Abstract: In a power supply device, a first switching power supply is disposed in a first power line connecting a receiver for receiving power from an external power supply and the power storage device and converts the power received from the external power supply to supply it to the power storage device. A second switching power supply is disposed in the second power line including a first end connected the first power line at a branch point, and a second end connected to the load device, and converts the power received from the power storage device to supply it to the load device. The first noise removal filter is disposed between the branch point and the power storage device in the first power line. The second noise removal filter is disposed between the branch point and the second switching power supply in the second power line.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: June 15, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kento Mochizuki, Shuhei Chizuwa
  • Publication number: 20210122253
    Abstract: Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).
    Type: Application
    Filed: January 4, 2021
    Publication date: April 29, 2021
    Inventor: Shuhei CHIZUWA
  • Publication number: 20210126547
    Abstract: A switching power supply device according to an embodiment of the present disclosure includes: power supply circuits corresponding to phases of a polyphase AC power supply as an external power supply; a switching circuit configured to switch a connection destination of another power supply circuit other than a specific power supply circuit corresponding to a specific phase of the external power supply among the power supply circuits to a phase corresponding to the other power supply circuit or the specific phase; and a control unit configured to connect, to each phase of the external power supply connected to the switching power supply device, the other power supply circuit corresponding to the phase, and connect the other power supply circuit as a surplus to the specific phase when the number of phases of the external power supply is smaller than the number of the power supply circuits.
    Type: Application
    Filed: October 7, 2020
    Publication date: April 29, 2021
    Inventor: Shuhei CHIZUWA
  • Patent number: 10906412
    Abstract: Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: February 2, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Shuhei Chizuwa
  • Patent number: 10790685
    Abstract: A measurement apparatus includes first and second sensors, first and second processors, a multiplexer, and an A/D converter. The first and second sensors are configured to detect an identical physical quantity, and respectively output analog signals according to the physical quantity. The first processor performs an offset process on an analog signal from the first sensor using a first offset value to output a first analog signal. The second processor performs an offset process on an analog signal from the second sensor using a second offset value, which is different from the first offset value, to output a second analog signal. The A/D converter converts the first analog signal to output a first digital signal when the multiplexer outputs the first analog signal, and converts the second analog signal to output a second digital signal when the multiplexer outputs the second analog signal.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: September 29, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shuhei Chizuwa, Naoyuki Tsuboi
  • Publication number: 20200223320
    Abstract: Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).
    Type: Application
    Filed: April 1, 2020
    Publication date: July 16, 2020
    Inventor: Shuhei CHIZUWA
  • Patent number: 10658924
    Abstract: A power converter includes an input voltage detection section, a power factor correction (PFC) section, a DC-DC conversion section, and a control section that stops power conversion operation in a case where an input voltage value is greater than or equal to a predetermined value. The control section resumes power conversion operation such that a second input current value lower than a first input current value corresponding to the input voltage value is input into the PFC section after stopping the power conversion operation.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: May 19, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shuhei Chizuwa, Isao Isogai
  • Patent number: 10640007
    Abstract: Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: May 5, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Shuhei Chizuwa
  • Publication number: 20200076293
    Abstract: In a power supply device, a first switching power supply is disposed in a first power line connecting a receiver for receiving power from an external power supply and the power storage device and converts the power received from the external power supply to supply it to the power storage device. A second switching power supply is disposed in the second power line including a first end connected the first power line at a branch point, and a second end connected to the load device, and converts the power received from the power storage device to supply it to the load device. The first noise removal filter is disposed between the branch point and the power storage device in the first power line. The second noise removal filter is disposed between the branch point and the second switching power supply in the second power line.
    Type: Application
    Filed: November 11, 2019
    Publication date: March 5, 2020
    Inventors: KENTO MOCHIZUKI, SHUHEI CHIZUWA
  • Publication number: 20190255958
    Abstract: Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).
    Type: Application
    Filed: May 2, 2019
    Publication date: August 22, 2019
    Inventor: Shuhei CHIZUWA
  • Publication number: 20190229611
    Abstract: A power converter includes an input voltage detection section, a power factor correction (PFC) section, a DC-DC conversion section, and a control section that stops power conversion operation in a case where an input voltage value is greater than or equal to a predetermined value. The control section resumes power conversion operation such that a second input current value lower than a first input current value corresponding to the input voltage value is input into the PFC section after stopping the power conversion operation.
    Type: Application
    Filed: January 24, 2019
    Publication date: July 25, 2019
    Inventors: Shuhei CHIZUWA, Isao ISOGAI
  • Patent number: 10322639
    Abstract: Provided are a charging device and a vehicle capable of reducing the amount of noise flowing into a quick-charging facility. The pair of charging lines connecting the quick-charging facility (20) to an onboard battery (30) are referred to as quick-charging lines, and each of these quick-charging lines is provided with a relay (16-1, 16-2). Each relay (16-1, 16-2) is used to switch the current flowing in the respective quick-charging line on and off, the current being switched on during quick-charge and being switched off during normal charging. Each quick-charging line has a Y-capacitor (17) connected thereto closer to a QC port (15) than the respective relay (16-1, 16-2).
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: June 18, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Shuhei Chizuwa