Patents Examined by Drew A. Dunn
  • Patent number: 12034323
    Abstract: A battery control unit includes a switching unit and a control unit. The switching unit is provided for each of a plurality of batteries connected to in series to each other, and switches a connection state in which the corresponding battery is discharged and a non-connection state in which the corresponding battery is not discharged. The control unit switches the battery to the non-connection state in order from the battery whose remaining dischargeable capacity reaches a predetermined value. Further, the control unit switches all the batteries to the connection state after the remaining dischargeable capacity of all the batteries reaches the predetermined value, and then switch the battery to the non-connection state in order from the battery determined to reach a discharge termination state.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: July 9, 2024
    Assignee: YAZAKI CORPORATION
    Inventors: Chihiro Ono, Takahiro Syouda
  • Patent number: 12015290
    Abstract: A battery pack can include one or more cells. The battery pack can include at least one temperature sensor configured to obtain a temperature measurement indicative of a temperature of at least cell of the one or more cells. The battery pack can include a controller, the controller configured to be placed in signal communication with a battery charger. The controller can be configured to perform operations. The operations can include obtaining the temperature measurement from the at least one temperature sensor. The operations can include determining, based at least in part on the temperature measurement, that the temperature of the at least one cell is between a lower temperature threshold and an upper temperature threshold.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: June 18, 2024
    Assignee: TECHTRONIC CORDLESS GP
    Inventors: Colin Hines, Clayton Brutus
  • Patent number: 12015299
    Abstract: A circuit for charging a rechargeable battery is described. The circuit includes a first DC voltage source, a bus capacitor Cbus, an H-bridge circuit, a rechargeable battery, a second DC voltage source, an impedance meter and a microcontroller. The impedance meter measures an impedance of the rechargeable battery. The microcontroller is connected to the impedance meter and to each gate contact. The microcontroller generates a set of drive signals that are configured to generate a sinusoidal with ripple current at an output terminal of the H-bridge circuit. The microcontroller adjusts a frequency of the sinusoidal with ripple current based on the impedance of the rechargeable battery and identifies a frequency of the sinusoidal with ripple current at which the rechargeable battery has a minimum internal impedance. The microcontroller adjusts the set of drive signals to generate the sinusoidal with ripple current at the identified frequency and recharge the rechargeable battery.
    Type: Grant
    Filed: February 20, 2024
    Date of Patent: June 18, 2024
    Assignee: Prince Mohammad Bin Fahd University
    Inventors: Ala A. Hussein, Abdulmajeed Al-Abdusalam, Hasan Ali Alseni, Meenhal Al-Najjar, Hani Quraish
  • Patent number: 12005789
    Abstract: A charging status or a location of a wireless charger is provided. A vehicle may charge at a particular wireless charger based at least in part on the charging status of the wireless charger and/or the location of the wireless charger.
    Type: Grant
    Filed: June 15, 2023
    Date of Patent: June 11, 2024
    Assignee: WiBotic Inc.
    Inventor: Benjamin Waters
  • Patent number: 12009687
    Abstract: A battery that periodically checks an actual battery capacity or energy with charge to a preset voltage (e.g., 4.1 V). The battery then decides the battery capacity or energy. If the capacity or energy is insufficient, then an apparatus in or associated with the battery slightly increases charging voltage to a point where the capacity is sufficient (e.g. from 4.1 V to 4.11 V). The process of periodically checking and slightly increasing charging voltage is performed until charging voltage reaches specification limit (e.g., 4.2 V). The scheme described herein has benefits such as battery longevity can be extended, risk of insufficient energy reserve can be reduced, burst power can be used as long as possible, and/or even higher burst power can be used.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: June 11, 2024
    Assignee: Intel Corporation
    Inventors: Naoki Matsumura, Charles Rego, Minh Le
  • Patent number: 12005788
    Abstract: An authentication between a wireless charger and a device configured to receive wireless energy from the wireless charger includes establishing a wireless data channel between the wireless charger and the device. An authentication challenge signal is driven onto a transmit charging coil of the wireless charger and a receive charging coil of the device is configured to receive the authentication challenge signal. The device sends an authentication response signal to the wireless charger based at least in part on the authentication challenge signal.
    Type: Grant
    Filed: June 15, 2023
    Date of Patent: June 11, 2024
    Assignee: WiBotic Inc.
    Inventor: Benjamin Waters
  • Patent number: 12009678
    Abstract: An opportunistic rail charging system is disclosed for recharging power supplies on mobile robots transporting goods within an automated order fulfillment system. Individual chargers may be incorporated into each mobile robot for converting a facility line voltage from the charge rail to a voltage for which the rechargeable power supplies on each mobile robot are rated.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: June 11, 2024
    Assignee: Walmart Apollo, LLC
    Inventors: Matthew W. Coady, William J. Fosnight, David A. Lachance, David Eiselen
  • Patent number: 12003131
    Abstract: A circuit for charging a rechargeable battery is described. The circuit includes a first DC voltage source, a bus capacitor Cbus, an H-bridge circuit, a rechargeable battery, a second DC voltage source, an impedance meter and a microcontroller. The impedance meter measures an impedance of the rechargeable battery. The microcontroller is connected to the impedance meter and to each gate contact. The microcontroller generates a set of drive signals that are configured to generate a sinusoidal with ripple current at an output terminal of the H-bridge circuit. The microcontroller adjusts a frequency of the sinusoidal with ripple current based on the impedance of the rechargeable battery and identifies a frequency of the sinusoidal with ripple current at which the rechargeable battery has a minimum internal impedance. The microcontroller adjusts the set of drive signals to generate the sinusoidal with ripple current at the identified frequency and recharge the rechargeable battery.
    Type: Grant
    Filed: February 20, 2024
    Date of Patent: June 4, 2024
    Assignee: Prince Mohammad Bin Fahd University
    Inventors: Ala A. Hussein, Abdulmajeed Al-Abdusalam, Hasan Ali Alseni, Meenhal Al-Najjar, Hani Quraish
  • Patent number: 11996710
    Abstract: A control system is intended to be tailored to a fuel-cell stack. This fuel-cell stack includes a plurality of cells connected in series between a first terminal and a second terminal. This system includes a central control unit and an electronic bypass device including a plurality of separate electrical bypass units, each electrical bypass unit being connected in parallel to at least one separate cell of the fuel-cell stack, in order to control its discharge on startup and shutdown of the stack and thus to avoid the creation of inverse electrical potentials and to limit the presence of residual potentials.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: May 28, 2024
    Assignee: Commissariat à l'Energie Atomique et aux Energies Alternatives
    Inventors: Marco Ranieri, Benoît Morin
  • Patent number: 11996724
    Abstract: A circuit for charging a rechargeable battery is described. The circuit includes a first DC voltage source, a bus capacitor Cbus, an H-bridge circuit, a rechargeable battery, a second DC voltage source, an impedance meter and a microcontroller. The impedance meter measures an impedance of the rechargeable battery. The microcontroller is connected to the impedance meter and to each gate contact. The microcontroller generates a set of drive signals that are configured to generate a sinusoidal with ripple current at an output terminal of the H-bridge circuit. The microcontroller adjusts a frequency of the sinusoidal with ripple current based on the impedance of the rechargeable battery and identifies a frequency of the sinusoidal with ripple current at which the rechargeable battery has a minimum internal impedance. The microcontroller adjusts the set of drive signals to generate the sinusoidal with ripple current at the identified frequency and recharge the rechargeable battery.
    Type: Grant
    Filed: December 13, 2022
    Date of Patent: May 28, 2024
    Assignee: Prince Mohammad Bin Fahd University
    Inventors: Ala A. Hussein, Abdulmajeed Al-Abdusalam, Hasan Ali Alseni, Meenhal Al-Najjar, Hani Quraish
  • Patent number: 11990781
    Abstract: A method for determining a quality factor of a wireless charger is disclosed. The wireless charger includes an inverter, a filter, and a resonant tank circuit. The inverter receives a supply voltage and generates a PWM signal at a first node and a second node. The filter connects to the first and second nodes of the inverter to receive the PWM signal, and generates a filtered signal at a first terminal and a second terminal of a capacitor. The resonant tank circuit connects to the first and second terminals of the capacitor of the filter to receive the filtered signal, and provides wireless power at an inductor coil to a receiver. The method includes: issuing a current pulse to the resonant tank circuit; and in a Q-factor determination phase of the wireless charger, connecting the resonant tank circuit and only the capacitor of the filter in a resonance network.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: May 21, 2024
    Assignee: NXP USA, Inc.
    Inventors: Dechang Wang, Dengyu Jiang, Ruyang Sheng, Huan Mao
  • Patent number: 11990785
    Abstract: A battery control device includes a plurality of voltage detection circuits that are provided so as to correspond to a plurality of battery modules constituting a battery and detect voltages of the battery modules; a plurality of communication cables that connect the voltage detection circuits in a daisy chain manner through coupling capacitors; and a control circuit that transmits and receives communication signals to and from the voltage detection circuits through the communication cables and controls the battery on the basis of the voltages received from the voltage detection circuits. Communication terminals connected to the communication cables in the voltage detection circuit are grounded through a predetermined passive circuit.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: May 21, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventor: Kotaro Seki
  • Patent number: 11984738
    Abstract: The present disclosure relates to a charging control method applicable for a first terminal. The method includes: monitoring a Bluetooth communication state between the first terminal and the second terminal in a process of charging the first terminal. When the Bluetooth communication state is monitored to be in an abnormal state, the charging power for charging the first terminal is adjusted reduced based on the charge protocol supported by the first terminal.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: May 14, 2024
    Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
    Inventor: Chaoxi Chen
  • Patent number: 11984561
    Abstract: A battery system includes a plurality of battery modules electrically connected in series. Each of the battery modules includes: one or more battery cells; a first switch connected between a positive reference potential of the one or more battery cells and a first node; and a second switch connected between the first node and a second node, where a negative reference potential of the one or more battery cells is connected to the second node. A management module is configured to: selectively close the first switches of the battery modules while the second switches are open; and selectively close the second switch of one of the battery modules while the first switch of the one of the battery modules is open.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: May 14, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Chandra S. Namuduri, Suresh Gopalakrishnan, Rashmi Prasad
  • Patent number: 11984744
    Abstract: A battery charging method includes: determining whether a present charging cycle satisfies a floating charging condition when a first condition is satisfied, the first condition being that in a case where battery capacity is greater than a set capacity, a duration of continuous charging is greater than a set threshold; and charging using a set floating charging mode after determining that the present charging cycle satisfies the floating charging condition. As such, the battery capacity during the charging process is detected in real time. In a case where the battery capacity is greater than the set capacity, the duration of continuous charging is greater than the set threshold and the present charging cycle satisfies the floating charging condition, the floating charging mode is used in time, such that batteries are prevented from dangerous situations such as bulging, expansion and explosion, and the safety of battery charging is improved.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: May 14, 2024
    Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
    Inventors: Jinlong Zhang, Xueyun Xie
  • Patent number: 11973360
    Abstract: A battery protection charging method and a charging system thereof are provided. The battery protection charging method includes obtaining an operation parameter of a battery. When a first protection condition is satisfied, a charging voltage of the battery is reduced to a first voltage. When a second protection condition is satisfied, the charging voltage of the battery is reduced to a second voltage. The second voltage is lower than the first voltage. The first (second) protection condition includes the cycle-life count is higher than a first (second) cycle-life threshold, the high voltage cumulative time is higher than a first (second) high voltage time threshold, and the high voltage-temperature cumulative time is higher than a first (second) high voltage-temperature time threshold.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: April 30, 2024
    Assignee: ASUSTEK COMPUTER INC.
    Inventors: Ming-Hsuan Huang, Wen-Hsiang Yang
  • Patent number: 11973359
    Abstract: A method for operating a battery system connected to an electric energy system, having battery strings connected in parallel, including a battery, an inverter and a transformer Each battery is chargeable and dischargeable. Each battery has an installed, maximum charge capacity and a capacity that is available in the current operating state. During discharging the currently available capacity corresponds to a state-of-charge of the respective battery, and during charging the currently available capacity corresponds to a difference between the maximum charge capacity and the state-of-charge of the respective battery. A total charge output requested during the charging of the battery system and/or a total discharge output requested during the discharging of the battery system is distributed as part outputs over the battery strings and thus over the batteries dependent on the currently available capacities of the batteries of the battery strings connected in parallel.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: April 30, 2024
    Assignee: MAN ENERGY SOLUTIONS SE
    Inventors: Moritz Henke, Susanne Lehner
  • Patent number: 11962182
    Abstract: An embodiment of the present disclosure discloses a wireless charging device comprising a wireless receiving module, a controller, a first charging module, and a second charging module. The wireless receiving module is configured to receive a wireless charging signal in response to the wireless charging device being in a wireless sensing area, transmit a state indication signal to the controller, receive a charging indication signal from the controller, and determine whether to transmit the wireless charging signal to the first charging module according to the charging indication signal.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: April 16, 2024
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Zhiqiang Chen, Yuanjing Li, Xianghao Wu, Yongning Chen
  • Patent number: 11955821
    Abstract: In a portable device, a first battery has a positive terminal coupled to, through a first switch, an interface used to receive input power, and a negative terminal coupled to a reference terminal. A second battery has a positive terminal coupled to the interface, and a negative terminal coupled to the reference terminal through a second switch, and to the first battery's positive terminal through a third switch. A control circuitry controls the switches such that the device has multiple operation modes including at least a one-battery charging mode and a two-battery-in-series charging mode. In the one-battery charging mode, the circuitry turns off the third switch, and controls the other switches such that one battery is charged by the input power. In the two-battery-in-series charging mode, the control circuitry turns on the third switch and turns off the other switches, such that two batteries are charged by the input power.
    Type: Grant
    Filed: May 2, 2023
    Date of Patent: April 9, 2024
    Assignee: O2Micro Inc.
    Inventor: Guoxing Li
  • Patent number: 11942814
    Abstract: A smart battery device includes a battery unit, a temperature-sensing unit and a processing unit. The temperature-sensing unit senses the ambient temperature to generate a temperature signal. The processing unit is coupled to the battery unit and the temperature-sensing unit. In a charging mode, the processing unit receives the temperature signal and obtains the power capacity of the battery unit. The processing unit sets full capacity according to the temperature signal and generates an indication flag when the power capacity of the battery unit reaches the full capacity, wherein the indication flag is used to indicate that the battery unit is in a fully charged state.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: March 26, 2024
    Assignee: QUANTA COMPUTER INC.
    Inventor: Wei-Ting Yen