With Battery Or Cell Condition Monitoring (e.g., For Protection From Overcharging, Heating, Etc.) Patents (Class 320/134)
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Patent number: 11916423Abstract: A grouped consensus power allocation method for multiple energy storage units is provided, including determining a grouped coordination control strategy of multiple battery energy storage units (BESUs) of a BESS (battery energy storage system), where the multiple BESUs are communicated through a communication topology and grouped into a charging group and a discharging group, performing power coordination control power coordination control between the charging group and the discharging group based on a distributed algorithm, determining whether a switching between the charging group and the discharging group is triggered during an operation process of the BESS, and switching when it is triggered. The method can reduce the number of charging/discharging state conversions of the BESUs, prolong the service life of energy storage, ensure that the power allocation results meet the power constraints of the BESUs, reduce low-power operation times of the BESUs, and improve the efficiency of energy storage operation.Type: GrantFiled: May 18, 2022Date of Patent: February 27, 2024Assignee: GUIZHOU UNIVERSITYInventors: Jing Zhang, Yu He, Luqin Fan, Benjin Long, Rujing Yan
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Patent number: 11916425Abstract: An electronic device is provided. The electronic device includes a housing, a battery disposed inside the housing, a power management module for controlling charging of the battery, and at least one processor operationally connected with the battery and the power management module. The at least one processor is provided to direct a plurality of charging intervals while charging the battery, each of the plurality of charging intervals having a target voltage, to alternately charge the battery in a first mode and in a second mode through the power management module, wherein a charging current flowing into the battery is uniformly maintained in the first mode and a voltage of the battery is uniformly maintained in the second mode, and to switch the first mode to the second mode when the voltage of the battery reaches the target voltage in the first mode.Type: GrantFiled: January 9, 2020Date of Patent: February 27, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: Youngmi Ha, Hyunjun Oh, Jungmin Lee, Kuchul Jung, Sungjoon Cho, Hansol Choi, Kyounghoon Kim, Seongil Lee
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Patent number: 11916414Abstract: A protection system for a battery system includes a battery control module configured to selectively open at least one contactor to isolate the battery system from a load in response to a sensed current being greater than a first threshold and within a first current range, at least one fuse connected between first and second terminals of the battery system and configured to open to isolate the battery system from the load in response to the sensed current being greater than a second threshold and within a second current range that is greater than and offset from the first current range, and an auxiliary protection module configured to selectively form a short circuit between first and second terminals in response to the sensed current being greater than the first threshold, less than the second threshold, and within a coverage gap region between the first and second current ranges.Type: GrantFiled: December 27, 2021Date of Patent: February 27, 2024Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Venkata Prasad Atluri, Suresh Gopalakrishnan, Mark Daniel Gottlieb, Madhusudan Raghavan, Chandra S. Namuduri
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Patent number: 11904882Abstract: A setting device including a processor is provided. The processor is configured to, when occurrence of a secondary disaster is predicted after occurrence of a disaster, set a region in which the secondary disaster is predicted to a charging-prohibited zone in which use of a charging facility for charging a battery installed in a vehicle is prohibited.Type: GrantFiled: June 9, 2022Date of Patent: February 20, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daiki Yokoyama, Yoshiyuki Kageura, Masanori Shimada, Yoshihiro Sakayanagi, Hiroki Morita
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Patent number: 11909198Abstract: The disclosure features systems and methods for protecting transistors of a wireless power receiver. Systems can include a gate driver configured provide a control signal to control switching of the transistor gate such that power is transmitted to a load coupled to the receiver; and a controller coupled to the gate driver and configured to generate a protection signal. The protection signal can include (i) a fault signal indicating a fault in one or more components of the receiver; (ii) a signal indicating that the transistor gate should be latched; and/or (ii) at least one undervoltage signal indicating that an undervoltage condition exists in a power supply of the gate driver. Based on the generated protection signal, the gate driver can be configured to adjust the provided control signal to latch the transistor gate such that power is not transmitted to the load.Type: GrantFiled: January 28, 2021Date of Patent: February 20, 2024Assignee: WiTricity CorporationInventors: Milisav Danilovic, Bryan Esteban
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Patent number: 11904727Abstract: A power system includes a primary bus connected to a traction battery, a secondary bus connected to an auxiliary battery, a power converter between the traction and auxiliary batteries, and a controller. The controller commands the power converter to increase a magnitude of current output to the secondary bus when an amount of charge current received by the traction battery exceeds a first amount threshold and commands the power converter to decrease the magnitude when an amount of charge current received by the auxiliary battery exceeds a second amount threshold.Type: GrantFiled: March 3, 2021Date of Patent: February 20, 2024Assignee: Ford Global Technologies, LLCInventors: Xiaohong Nina Duan, Yanan Zhao, Ming Lang Kuang
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Patent number: 11901723Abstract: Methods and apparatus are disclosed for battery current monitoring. An example apparatus includes a haptic device, an isolation switch to deliver power from a battery to the haptic device, an integrator to integrate a signal based on a current from the battery to the haptic device to generate an integrator output, and control logic to control the isolation switch based on a comparison of the integrator output to a threshold.Type: GrantFiled: February 22, 2023Date of Patent: February 13, 2024Assignee: Tahoe Research, Ltd.Inventors: Devin Cass, Jorge Zabaco, George D. Beckstein, III
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Patent number: 11901749Abstract: A multi-battery system implements operations to equalize discharge path impedance. The system includes first and second batteries of different capacities each coupled to a battery rail that supports source load electronics. The system includes charge control electronics configured to decouple the first battery from the battery rail when the discharge path of the first battery and the discharge path of the second battery have unequal impedance and to recouple the first battery to the battery rail when the discharge path of the first battery and the discharge path of the second battery have substantially equal impedance.Type: GrantFiled: November 19, 2020Date of Patent: February 13, 2024Assignee: Microsoft Technology Licensing, LLCInventor: Ajit Justin
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Patent number: 11901748Abstract: Systems and methods are provided for state-of-charge balancing in battery management systems for Si/Li batteries. State-of-charge (SOC) of one or more lithium-ion cells may be assessed, and based on the assessing of the SOC, the one or more lithium-ion cells may be controlled. The controlling may include setting or modifying one or more operating parameters of at least one lithium-ion cell, and the controlling may be configured to equilibrate the SOC of the one or more lithium-ion cells or to modify an SOC of at least one lithium-ion cell so that the one or more lithium-ion cells have a balanced SOC.Type: GrantFiled: February 2, 2022Date of Patent: February 13, 2024Assignee: Enevate CorporationInventors: Samuel Keene, Benjamin Yong Park, Samer Saab
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Patent number: 11899072Abstract: A method for estimating DoD of a battery includes obtaining voltage Va at a first electric charge rate A(Ia) and voltage Vb at a second electric charge rate B(Ib) by checking a voltage-DoD table based on DoD of an experimental battery respectively; measuring voltage V of the experimental battery; substituting Ia, Ib, Va, Vb and V into an expression to calculate an estimated current lest; and using a Coulomb counter to update the voltage-DoD table and estimate the DoD of the experimental battery.Type: GrantFiled: July 30, 2021Date of Patent: February 13, 2024Assignee: Joules Miles Co., Ltd.Inventor: Yu Min Chen
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Patent number: 11894527Abstract: Disclosed are a battery cell self-discharge current detection method, apparatus, and device, and a computer storage medium. The method includes: controlling a constant voltage source to start charging a battery cell at a first moment, and acquiring a first rate of change of a target current over time in a first preset duration after the first moment; controlling, in the case where the first rate of change is greater than a first threshold value, a constant current source and the constant voltage source to charge the battery cell; acquiring, in the case of reaching a second moment, a second rate of change of the target current over time in a second preset duration after the second moment, wherein the second moment is a moment when the time for charging the battery cell using the constant current source and the constant voltage source reaches a third preset duration; and determining.Type: GrantFiled: August 4, 2023Date of Patent: February 6, 2024Assignee: JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITEDInventors: Ting Feng, Shaofei Wang, Yimin Wei
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Patent number: 11884167Abstract: Module-based energy systems are provided having multiple converter-source modules. The converter-source modules can each include an energy source and a converter. The systems can further include control circuitry for the modules. The modules can be arranged in various ways to provide single phase AC, multi-phase AC, and/or DC outputs. Each module can be independently monitored and controlled.Type: GrantFiled: September 15, 2020Date of Patent: January 30, 2024Assignee: TAE Technologies, Inc.Inventors: Mikhail Slepchenkov, Roozbeh Naderi
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Patent number: 11884174Abstract: A vehicle is provided that includes a battery management system with an energy storage device configured to power the vehicle. The energy storage device includes a battery module with: at least one sensor, a processor, and an optical transceiver. The battery management system also includes a control unit to control the energy storage device, and a control unit optical transceiver configured for bidirectional free-space optical communication with the battery module optical transceiver via a free-space optical communication link. The battery module processor is configured to receive sensor readings and transmit them to the control unit via the free-space optical communication link. Based on the sensor readings, the control unit sends commands to the battery module processor via the free-space optical communication link.Type: GrantFiled: September 10, 2021Date of Patent: January 30, 2024Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.Inventors: Neil T. Moloney, Shohei Nomura
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Patent number: 11888335Abstract: In general, one aspect disclosed features an apparatus, comprising: a battery; a resistive load; a switch comprising a first transistor and a second transistor; a resistor; an inductor; and a control circuit; wherein the switch, the resistor, and the inductor are coupled in series between the battery and the resistive load; and wherein the control circuit controls the switch based on a voltage across the resistor. In general, another aspect disclosed features an apparatus, comprising: a battery; a resistive load; a switch; a resistor; an inductor; and a control circuit; wherein the switch, the resistor, and the inductor are coupled in series between the battery and the resistive load; and wherein the control circuit controls the switch based on a voltage across the resistor.Type: GrantFiled: August 23, 2022Date of Patent: January 30, 2024Assignee: Ampaire, Inc.Inventors: Nathaniel C. Wynn, Russell Newman, Arindam Chatterji
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Patent number: 11872900Abstract: When a charging connector of an EVSE is connected to an inlet, a vehicle transmits charging information to a server. The server determines whether or not there is a predetermined function which is set to OFF among functions for external charging included in the vehicle. When there is a predetermined function which is set to OFF, the server transmits a recommendation notification to a smartphone. The smartphone transmits selection information in response to an operation of a user on the recommendation notification to the server. Based on the selection information, the server generates setting information about the predetermined function and transmits the setting information to the vehicle. The vehicle performs a setting for the predetermined function according to the setting information.Type: GrantFiled: March 2, 2021Date of Patent: January 16, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshiyuki Tsuchiya
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Patent number: 11870038Abstract: A method of manufacturing a lithium-ion secondary battery of the present invention includes at least four steps as follows: an initial charging step of charging the lithium-ion secondary battery, which has not been subjected to initial charging, under a temperature environment ranging of equal to or higher than ?20° C. and equal to or lower than 15° C.; an aging step of leaving the lithium-ion secondary battery under a temperature environment ranging of equal to or higher than 30° C. and equal to or lower than 80° C. after the initial charging step; a short circuit detecting step of detecting the presence or absence of a short circuit of the lithium-ion secondary battery by measuring a voltage drop quantity of the lithium-ion secondary battery and comparing the voltage drop quantity with a reference value; and a sorting step of sorting out a lithium-ion secondary battery in which no short circuit is detected.Type: GrantFiled: May 4, 2022Date of Patent: January 9, 2024Assignee: AESC Japan Ltd.Inventors: Tomoyuki Ichikawa, Shinsuke Enomoto, Naoyuki Iwata
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Patent number: 11867765Abstract: A battery micro-short circuit detection method and apparatus are disclosed. The method includes: obtaining a target initial battery parameter value of a target battery at an initial moment, and determining a reference initial battery parameter value of a virtual reference battery at the initial moment, where a response of the virtual reference battery is the same as a response of the target battery when a same excitation condition is given; obtaining a target battery parameter value of the target battery at a specified moment; determining a reference battery parameter value of the virtual reference battery at the specified moment based on the target battery parameter value and the reference initial battery parameter; and calculating a difference between the target battery parameter value and the reference battery parameter value, and determining, based on the difference, that the target battery is micro-short-circuited.Type: GrantFiled: June 20, 2019Date of Patent: January 9, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Bingxiao Liu, Rui Yang, Xiaokang Liu
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Patent number: 11865944Abstract: A battery management system for batteries, such as, but not limited to, electric vehicle battery packs and cells, lithium iron phosphate batteries, lead acid batteries, gel batteries, and absorbed gel mat batteries, in engine start applications is disclosed. The battery management system is configured to control the charge and charging of each cell individually. The battery management system may be configured to control the charge of a battery which may consist of a plurality of cells, such as, but not limited to, lithium iron phosphate cells, and in at least one embodiment, the battery may consist of, but is not limited to being formed from, four lithium iron phosphate cells connected in series and a battery management system to ensure proper charge and safe operation.Type: GrantFiled: February 12, 2021Date of Patent: January 9, 2024Assignee: DELTRAN OPERATIONS USA, INC.Inventors: Edward William Brumley, Jr., Peter James Shread
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Patent number: 11863005Abstract: Methods, systems, and devices for power electronics-based (PE-based) battery management. A system may include a set of battery strings, where each battery string may include a set of battery modules, and where each battery module may include a set of battery cells. The system may also include a set of power converters, where each power converter may be coupled with at least one battery string. A power electronics-based (PE-based) BMS may provide one or more battery management functions for at least one corresponding battery string while also monitoring or controlling a corresponding power converter.Type: GrantFiled: April 18, 2022Date of Patent: January 2, 2024Assignee: Clenera, LLCInventor: Geng Tian
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Patent number: 11863000Abstract: An energy storage system for a vehicle, includes one or more battery units for storing electrical energy; at least one high voltage switch for connection and disconnection of the one or more battery units to at least one load, such as an electrical machine; a fuse for disconnection of the one or more battery units when the energy storage system experiences an overcurrent being above a predetermined overcurrent value. The energy storage system is configured to during use, identify if a condition has occurred which requires immediate shutdown of the energy storage system.Type: GrantFiled: February 18, 2022Date of Patent: January 2, 2024Assignee: VOLVO TRUCK CORPORATIONInventor: Tobias Smidebrant
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Patent number: 11843315Abstract: An in-vehicle backup power supply device includes a battery unit having a plurality of unit batteries connected in series and a discharge circuit configured to perform a first discharge operation for supplying power to a third conductive path based on a charge accumulated in the battery unit, a balance circuit performs a cell balancing operation on the battery unit, and a control unit controls the balance circuit, and the balance circuit is performs a second discharge operation for supplying power to the third conductive path based on a charge accumulated in a plurality of power storage elements, and the control unit performs a first control for causing the balance circuit to perform the cell balancing operation and a second control for causing the balance circuit to perform the second discharge operation, and if a failure in which the first discharge operation cannot operate normally occurs, performs the second control.Type: GrantFiled: May 11, 2020Date of Patent: December 12, 2023Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.Inventor: Koki Uchida
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Patent number: 11831191Abstract: A DC-DC converter is connected to an auxiliary battery using a second wire, and the DC-DC converter steps down a voltage and outputs it to the second wire. Plural loads are connected in parallel with the auxiliary battery to the DC-DC converter using plural third wires. A power supply control ECU varies the output voltage of the DC-DC converter and determines a fault range based on the output voltage of the DC-DC converter and a charging/discharging current of the auxiliary battery at that time.Type: GrantFiled: August 4, 2022Date of Patent: November 28, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryosuke Takahashi, Yuki Sano
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Patent number: 11827346Abstract: In an aspect the present disclosure is directed to an electric aircraft. An electric aircraft may include a plurality of fixed wings, a tail, a first boom, and a second boom and a plurality of lift components. The aircraft also includes a tail affixed to the aft end of the fuselage, a first boom including a first rear end affixed to the tail and a first forward end proximal to the fore end of the fuselage, wherein the first boom is affixed to a first wing, a second boom including a second rear end affixed to the tail and a second forward end proximal to the fore end of the fuselage, wherein the second boom is affixed to the second wing. The aircraft may include a plurality of lift components which may be affixed to the booms.Type: GrantFiled: May 4, 2022Date of Patent: November 28, 2023Assignee: BETA AIR, LLCInventor: Kyle B. Clark
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Patent number: 11830987Abstract: The present invention relates to an electrolyte detection device. The electrolyte detection device comprises: a contamination detection plate configured to contact any one surface of a secondary battery, in which an opening is provided; first and second conductors provided to be spaced apart from each other so that current does not flow on a surface of the contamination detection plate, the first and second conductors being electrically connected to each other by an electrolyte leaking from the opening of the secondary battery; a power member comprising a positive electrode connected to the first conductor and a negative electrode connected to the second conductor; and a contamination detection member configured to detect whether the electrolyte leaks through the current generated when the first conductor and the second conductor are electrically connected to each other.Type: GrantFiled: August 13, 2020Date of Patent: November 28, 2023Inventors: Tae Young Moon, Jun Hyeak Huh
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Patent number: 11815977Abstract: An apparatus includes a power management integrated circuit (PMIC) and a power translator component coupled to the PMIC. The power translator component supplies power to the PMIC. The power translator component can further receive, from the PMIC, an indication that the PMIC has experienced a thermal event and responsive to receipt of the indication that the PMIC has experienced the thermal event, prevent powering of the PMIC.Type: GrantFiled: December 23, 2021Date of Patent: November 14, 2023Assignee: Micron Technology, Inc.Inventor: Matthew D. Rowley
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Patent number: 11817723Abstract: A system for suppressing inrush currents is described. The system may include a negative temperature coefficient (NTC) thermistor and a positive temperature coefficient (PTC) thermistor arranged in series between a power source and a battery system to be charged. At a low temperature, while the PTC thermistor provides only minimal resistance to minimize an inrush current, the NTC thermistor provides increased resistance. As the temperature increases, the resistance provided by the PTC thermistor increases as the resistance from the NTC thermistor decreases. The system may be used in conjunction with a battery charging system has at least one current pathway from the power source to the battery system.Type: GrantFiled: November 21, 2022Date of Patent: November 14, 2023Assignee: Inventus Power, Inc.Inventors: Jianfei Liu, Jujie Xia, Youwu Chen, Zhengyi Zhou
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Patent number: 11814030Abstract: A vehicle and control method include a traction battery, a temperature sensor, current sensor, and voltage sensor associated with the traction battery, an electric machine powered by the traction battery to provide propulsive power to the vehicle, and a controller configured to control at least one of the electric machine and the traction battery in response to a battery state of charge (SOC) estimated using a battery model having parameters including a first resistance in series with a second resistance and a capacitance in parallel to the second resistance. The battery model parameters are adjusted during vehicle operation using a Kalman filter and reinitialized to new values in response to a vehicle key-on, in response to a change in the battery current exceeding a corresponding threshold, and/or in response to any of the parameter values crossing an associated limit.Type: GrantFiled: July 22, 2020Date of Patent: November 14, 2023Assignee: Ford Global Technologies, LLCInventors: Gabrielle Vuylsteke, Marcelo Araujo Xavier
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Patent number: 11811248Abstract: A system for generator-based charging of a battery module may include the battery module, a sensor located adjacent the battery module, a generator controller comprising a processor and a non-transitory memory device storing instructions. The instructions, when executed by the processor, cause the generator controller to analyze one or more sensor signals received from the sensor. The sensor signals may correspond to a condition of the battery module. The generator controller may then calculate, based on the one or more sensor signals, a generator current value for use in charging the battery module. Next, the generator controller may generate a control signal comprising a command that may cause the generator to provide a charging current having the current value.Type: GrantFiled: July 21, 2016Date of Patent: November 7, 2023Assignee: C.E. Niehoff & Co.Inventor: Dimitar Delevski
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Patent number: 11789089Abstract: The present disclosure relates to an apparatus and method for detecting a defect of a battery pack, and more particularly, to an apparatus and method for detecting a defect of a capacitor provided in the battery pack. According to the present disclosure, since a defect of a capacitor is detected using a noise signal, the defect of the capacitor in an assembled battery pack may be easily detected. In addition, since the present disclosure includes a compact circuit structure for noise signal output, noise signal filtering and voltage measurement, the cost for detecting a defect of the capacitor may be reduced.Type: GrantFiled: May 21, 2020Date of Patent: October 17, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Young-Joong Kim, Jin-Hyun Lee
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Patent number: 11777108Abstract: A decrease in the capacity of a power storage device is inhibited by adjusting or reducing imbalance in the amount of inserted and extracted carrier ions between positive and negative electrodes, which is caused by decomposition of an electrolyte solution of the negative electrode. Further, the capacity of the power storage device can be restored. Furthermore, impurities in the electrolyte solution can be decomposed with the use of the third electrode. A power storage device including positive and negative electrodes, an electrolyte, and a third electrode is provided. The third electrode has an adequate electrostatic capacitance. The third electrode can include a material with a large surface area. In addition, a method for charging the power storage device including the steps of performing charging by applying a current between the positive and negative electrodes, and performing additional applying a current between the third electrode and the negative electrode is provided.Type: GrantFiled: January 4, 2021Date of Patent: October 3, 2023Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Junpei Momo, Hiroyuki Miyake, Kei Takahashi
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Patent number: 11774613Abstract: A seismic data acquisition unit includes a housing, and disposed within the housing, communication circuitry, and circuitry configured to detect and digitize seismic signals. The communication circuitry includes a first transmitter plate, a second transmitter plate, a first receiver plate, a second receiver plate, and a driver. The first and second transmitter plates, and first and second receiver plates, are adjacent a wall of the housing. The driver is coupled to the first transmitter plate and the second transmitter plate. The receiver is coupled to the first receiver plate and the second receiver plate. The communication circuitry transmits digitized seismic signals via a first capacitor that includes the first transmitter plate, and a second capacitor that includes the second transmitter plate. The communication circuitry receives information via a third capacitor that includes the first receiver plate, and a fourth capacitor that includes the second receiver plate.Type: GrantFiled: February 3, 2022Date of Patent: October 3, 2023Assignee: Geospace Technologies CorporationInventors: Robbin Barnet Adams, James Michael Hallaman, Roy James, Samuel Anil Choudhari, Danny Sheen, Barry S. Basile, Ronny Raborn
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Patent number: 11774470Abstract: Provided are a load detection system and a load detection method thereof. The load detection system includes an adjustable power supply (110) and a detection module (12). The adjustable power supply (110) and a to-be-detected load 120 together form a set load detection circuit (11), and the adjustable power supply (110) is configured to output a changing power supply signal to the to-be-detected load (120) through the set load detection circuit (11). The detection module (12) is configured to detect at least two changing electrical parameters in the set load detection circuit (11), acquire an equivalent resistance value of the to-be-detected load (120) according to the at least two changing electrical parameters, and detect whether the to-be-detected load (120) includes a charging device according to a non-linear change curve or a linear change curve formed by the equivalent resistance value and the power supply signal.Type: GrantFiled: August 30, 2019Date of Patent: October 3, 2023Assignee: JIANGSU ZIMI SOFTWARE TECHNOLOGY CO., LTD.Inventors: Feng Zhang, Maonan Yao
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Patent number: 11767007Abstract: An electrical energy management system includes a first battery having a nominal operating voltage, a second battery having a charging voltage sufficiently close to the nominal operating voltage of the first battery such that the first battery can charge the second battery when the first battery and the second battery are electrically connected in parallel, a generator that is controllable to provide a variable output voltage, a starter motor, an electrical load, a plurality of switches each controllable to be in an open state or a closed state, and a controller that is configured to control the output voltage of the generator and to control the open or closed state of each of the plurality of switches.Type: GrantFiled: July 15, 2021Date of Patent: September 26, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Suresh Gopalakrishnan, Chandra S. Namuduri
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Patent number: 11768245Abstract: In a status detection system, a data acquisition circuit monitors statuses of a battery to generate status data. A storage medium stores a set of lookup tables. A lookup table of the lookup tables includes a set of datasets corresponding to a set of time frames. Each dataset includes digital values of parameters of the battery obtained in a corresponding time frame of the time frames. A controller receives the status data and updates the lookup tables based on the status data. The controller also obtains a current dataset of the parameters based on the status data, searches the lookup table for a previous dataset that matches the current dataset, compares a current value of a parameter in the current dataset with a previous value of the parameter in the previous dataset, and determines whether a potential fault is present in the battery based on a result of the comparison.Type: GrantFiled: July 21, 2021Date of Patent: September 26, 2023Assignee: O2Micro Inc.Inventor: Guoxing Li
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Patent number: 11764590Abstract: A battery management system of a battery cell assembly including a plurality of cells, includes a plurality of first cell balancing resistors and a plurality of first cell balancing switches connected between a positive electrode and a negative electrode of a corresponding first cell among the plurality of cells; and a plurality of second cell balancing resistors and a plurality of second cell balancing switches connected between the positive electrode and the negative electrode of the corresponding first cell, wherein a first cell balancing current flowing during an on period of each first cell balancing switch is greater than a second cell balancing current flowing during an on period of each second cell balancing switch.Type: GrantFiled: March 10, 2020Date of Patent: September 19, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Ki Young Lee, Kyoung Choon Min
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Patent number: 11764410Abstract: A battery heating method and a battery heating system for a vehicle battery. The battery heating system includes a vehicle battery, an auxiliary energy storage device, a direct current to direct current converter and a processing circuitry. The processing circuitry is configured to cause the battery heating system to operate in a first mode wherein the direct current to direct current converter is configured to control a current to flow through the vehicle battery in a first direction and operate in a second mode wherein the direct current to direct current converter is configured to control a current to flow through the vehicle battery in a second direction.Type: GrantFiled: May 21, 2020Date of Patent: September 19, 2023Assignee: NINGBO GEELY AUTOMOBILE RESEARCH & DEVELOPMENT CO.Inventors: Sandeep David, Bengt Axelsson, Sri Vishnu Gorantla Narayana Murthy
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Patent number: 11764447Abstract: A battery pack includes a plurality of battery modules arranged along at least one direction, a resistor connected to an abnormal battery module that operates abnormally among the battery modules to absorb energy, an event detector provided to detect the abnormal battery module, a switch to connect or disconnect each of the battery modules to/from the resistor to selectively form a closed circuit, and a controller to receive information from the event detector and control the switch to form a current path between the abnormal battery module and the resistor.Type: GrantFiled: June 4, 2020Date of Patent: September 19, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Eun-Gyu Shin, Jeong-O Mun, Jae-Min Yoo, Yoon-Koo Lee
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Patent number: 11757138Abstract: In one or more embodiments, one or more systems, one or more methods, and/or one or more processes may determine multiple voltage values associated with a rechargeable battery over a period of time; store the multiple voltage values with respect to multiple clock values over the period of time; determine a voltage drop rate from the multiple voltage values and the multiple clock values; determine a threshold voltage value associated with a predicted energy capacity of the rechargeable battery for a mobile information handling system (IHS) to perform a power state transition; determine a voltage value associated with the rechargeable battery; determine that the voltage value has reached the threshold voltage value; provide a notification to an operating system executed by the mobile IHS; store data from a volatile memory medium to a non-volatile memory medium; and transition the mobile IHS from an operational state to a power conservation state.Type: GrantFiled: April 19, 2021Date of Patent: September 12, 2023Assignee: Dell Products L.P.Inventors: Adolfo Sandor Montero, Pei Mng Lin, Chia Liang Lin, Shao Szu Ho, Jui-Chin Fang
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Patent number: 11749843Abstract: A safety element is provided to a lead connected part of a battery module in the event of overcharge, to improve safety of the battery module. The battery module according to the present disclosure includes two or more battery cells, and the battery module includes a current shut-off battery cell which electrically connects adjacent first and second battery cells, and when overcharge occurs, ruptures to disconnect the electrical connection.Type: GrantFiled: October 8, 2018Date of Patent: September 5, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Kyung-Min Kim, Song-Taek Oh, Jung-Seok Choi
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Patent number: 11733747Abstract: The technology relates generally to a distributed battery cell charging circuit that allows for battery cells to be positioned in different locations. The distributed battery charging circuit may include a first charging circuit including at least one battery cell, a second charging circuit including at least one battery cell, and a controller configured to control the charging of the at least one battery cell in the first charging circuit independently of controlling the charging of the at least one battery cell in the second charging circuit.Type: GrantFiled: May 7, 2020Date of Patent: August 22, 2023Assignee: Google LLCInventor: Chia Hang Yeh
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Patent number: 11735931Abstract: A battery module including a battery string and a switch is provided. The battery string includes a first battery, a second battery, a third battery, a first metal plate, and a second metal plate. The first battery includes a first positive terminal and a first negative terminal. The second battery includes a second positive terminal and a second negative terminal. The third battery includes a third positive terminal and a third negative terminal. The first metal plate is connected to the first negative terminal and the second positive terminal. The second metal plate is connected to the second negative terminal and the third positive terminal. The switch is connected to the first or second metal plate.Type: GrantFiled: January 27, 2021Date of Patent: August 22, 2023Assignee: ACER INCORPORATEDInventors: Shang-Hui Chen, Chih-Kai Wang
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Patent number: 11731529Abstract: The embodiments of the present application provide a power supply apparatus, a battery management system, a power supply system, a control method and a medium. The method includes: controlling, under a condition that a vehicle is in a parking state, a first battery pack of a power supply apparatus to supply power to a first load of the vehicle, and controlling the first battery pack and a second battery pack of the power supply apparatus to stop supplying power to a second load of the vehicle; acquiring, in a process of supplying power to the first load, a capacity parameter of the first battery pack; controlling, under a condition that the capacity parameter of the first battery pack is lower than a first preset capacity threshold, a direct current converter to transmit electric energy of the second battery pack to the first battery pack.Type: GrantFiled: August 31, 2021Date of Patent: August 22, 2023Assignee: Contemporary Amperex Technology Co., LimitedInventors: Zhong Liu, Shuyun Xiong, Jinbo Cai
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Patent number: 11728660Abstract: An energy storage apparatus includes: a plurality of energy storage devices connected in series; a voltage detection unit that detects voltages of the plurality of energy storage devices; a discharge circuit that discharges the energy storage devices; and a control unit. The energy storage devices include lithium ion cells. The plurality of energy storage devices is chargeable by an external charger for a lead-acid battery, wherein a charge voltage per cell of the external charger for the lead-acid battery is higher than a maximum voltage of the energy storage device, and wherein the control unit discharges only an energy storage device having a highest voltage out of the plurality of energy storage devices when the plurality of energy storage devices is charged by a charger.Type: GrantFiled: January 13, 2022Date of Patent: August 15, 2023Assignee: GS YUASA INTERNATIONAL LTD.Inventor: Atsushi Fukushima
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Patent number: 11714134Abstract: An apparatus and a method for predicting a state of a battery are provided. The apparatus includes a data measuring unit that measures information about the battery and outputs first data, a data producing unit that reflects a change in available capacity of the battery based on at least a portion of the first data to calculate a corrected state of charge and processes the first data based on the corrected state of charge to generate second data, and outputs the second data, and a battery state estimating unit that estimates state information of the battery based on the second data.Type: GrantFiled: September 10, 2021Date of Patent: August 1, 2023Assignee: Electronics and Telecommunications Research InstituteInventors: Sungwoo Jo, Tae Moon Roh, Sun Kyu Jung
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Patent number: 11705742Abstract: Disclosed herein are regulated power supplies. The power source delivers power to a system load and includes battery units. The power source also includes power flow devices coupled to the battery units that are configured to provide power from the battery units to the system load. Each power flow device corresponds to a respective one of the battery units, and includes a one direction current flow device connected in series with a current regulator between the respective battery unit and the system load.Type: GrantFiled: August 26, 2022Date of Patent: July 18, 2023Assignee: Snap Inc.Inventors: Gerald Nilles, Russell Douglas Patton, Raul Alejandro Perez, Patrick Timothy Mcsweeney Simons
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Patent number: 11702060Abstract: A power relay assembly is provided and includes a first relay that is connected to a positive end of a battery and a second relay that is connected to a negative end of the battery and connected to the first relay via a DC capacitor. A first Field Effect Transistor (FET) is connected in parallel with the first relay and a second FET is connected in parallel with the first relay and connected in series with the first FET. A voltage control circuit is configured to adjust a voltage of the first FET with a first voltage or adjust a voltage of the first FET with a second voltage lower than the magnitude of the first voltage.Type: GrantFiled: October 5, 2020Date of Patent: July 18, 2023Assignees: Hyundai Motor Company, Kia Motors Corporation, Yura Corporation Co., Ltd.Inventors: Sangho Shin, Haesung Nam, Bum-Kyo Jung, Dae-Hwan Kwon
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Patent number: 11698414Abstract: A method of estimating a battery current limit for operation of a battery cell over the course of a specified prediction time. The method includes generating a plurality of current limit estimations by means of a plurality of current limit estimation sub-methods, wherein at least one current limit estimation sub-method generates its current limit estimation based on an RC equivalent circuit model of the battery cell, and determining the charge current limit by finding the lowest magnitude current limit estimation in the plurality of current limit estimations. At least one parameter of the RC equivalent circuit model is set based on the specified prediction time and at least one variable from the set of: a state of charge (SOC) of the battery cell, a temperature of the battery cell, a state of health (SOH) of the battery cell, a capacity of the battery cell, and a current of the battery cell.Type: GrantFiled: August 22, 2022Date of Patent: July 11, 2023Assignee: Karma Automotive LLCInventors: Jing Hong, Suvrat Ramasubramanian, Ali Jokar
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Patent number: 11695281Abstract: A battery overcharge preventing device according to an embodiment of the present invention includes: a voltage distribution unit connected to both ends of at least one battery cell in a battery module including multiple battery cells, the voltage distribution unit being configured to distribute a voltage of the at least one battery cell according to a preset ratio; a voltage sensing unit operating so as to allow a control current to flow when the voltage distributed by the voltage distribution unit is greater than a preset reference voltage; and a second relay configured to block, by operation of the voltage sensing unit, operation of a first relay that establishes an electrical connection between the battery module and a charging module.Type: GrantFiled: November 1, 2021Date of Patent: July 4, 2023Assignee: SK ON CO., LTD.Inventors: Soo Jeong Jeong, Yun Nyoung Lee
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Patent number: 11695404Abstract: According to one embodiment, a semiconductor device includes a first circuit, a first terminal, a second terminal, a conductor and a first switch element serially coupled between the first terminal and the second terminal, wherein the first circuit is configured to turn the first switch element to an OFF state when a first condition is satisfied, and the conductor is configured to physically break when a second condition is satisfied.Type: GrantFiled: September 14, 2021Date of Patent: July 4, 2023Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Kentaro Arai, Toshifumi Ishimori, Yutaka Yadoumaru, Masayoshi Takahashi
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Patent number: 11695282Abstract: A battery device includes a battery pack, a circuit substrate which acquires battery information on the battery pack or controls charge and discharge of the battery pack, a switch including a first power element or a second power element, and a heat radiator. The switch is a device controlling input and output of electric power to and from the battery pack, and an exterior part of the switch is arranged away from the circuit substrate. The heat radiator is a member made of a material having thermal conductivity, and is in direct contact with or indirect contact via a heat conductor with the exterior part of the switch so that heat of the switch can be transferred.Type: GrantFiled: March 21, 2019Date of Patent: July 4, 2023Assignee: DENSO CORPORATIONInventors: Kohei Yamamoto, Tatsuki Nishimata, Masato Niwa, Hidehiro Kinoshita, Yoshimitsu Inoue