Using A Battery Testing Device Patents (Class 324/426)
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Patent number: 12113377Abstract: A battery charger identifies the type of battery that is connected to it in order to provide the optimum voltage-current-time profile that is needed to safely and optimally charge and maintain the battery. In some embodiments, the battery current or voltage is monitored during charging, and as the current or the voltage changes while the charger is powered, the changes are measured and used to determine the type of battery that is connected so that the optimum charge profile can be applied.Type: GrantFiled: October 15, 2020Date of Patent: October 8, 2024Inventor: Michael T. Miles
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Patent number: 12113380Abstract: A pre-charge unit for charging a DC link capacitor includes a printed circuit board including at least one conductive layer; a pre-charge switch on the printed circuit board; and a pre-charge resistor electrically connected in series with the pre-charge switch, wherein the pre-charge resistor is formed by a conductive trace in the at least one conductive layer of the printed circuit board.Type: GrantFiled: July 21, 2021Date of Patent: October 8, 2024Assignee: SAMSUNG SDI CO., LTD.Inventor: Florian Maxl
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Patent number: 12109899Abstract: In a vehicle power supply device mounted on a vehicle and obtaining a low voltage power supply from a high voltage power supply via a step-down means, electric shock to the human body is prevented without using an insulating means such as a transformer. A vehicle power supply device converts power from high voltage to low voltage by selectively connecting a predetermined power storage element group to a low voltage electric load from a high voltage power supply formed by connecting power storage elements in series. A leakage current from the high voltage power supply is measured during the dead time period when the power storage element group is not connected to the low voltage electric load. When the value exceeds a predetermined value, the connection between the power storage element group and the low-voltage electric load is interrupted, so that electric shock is prevented.Type: GrantFiled: September 17, 2021Date of Patent: October 8, 2024Assignee: IMASEN ELECTRIC INDUSTRIAL CO., LTD.Inventors: Daisuke Makio, Koichi Yamanoue
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Patent number: 12103426Abstract: An energy storage apparatus includes: an energy storage device; an acquisition unit (current sensor) that acquires information with which the use of the energy storage device can be determined; and a management unit that manages the energy storage device in a set management mode. The management unit sets the management mode of the energy storage device in accordance with the information acquired by the acquisition unit.Type: GrantFiled: April 11, 2019Date of Patent: October 1, 2024Inventor: Takeyuki Shiraishi
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Patent number: 12107430Abstract: An electrical outlet for a recreational vehicle includes a high voltage AC electrical power receptacle and a low voltage DC electrical power receptacle that is powered independently of the high voltage AC receptacle so that the DC receptacle can remain energized when the AC receptacle is disconnected from an AC power supply. The DC and AC receptacles, located at the same electrical outlet, are wired separately to different power sources. This allows the recreational vehicle's electrical storage batteries to continue energizing the DC receptacle, at the same outlet as the AC receptacle, even when it is not possible or desirable to energize the AC receptacle. Therefore, limited functionality can be maintained at the outlet even when no AC mains, onboard generator, or AC-to-DC inverter is connected or in operation.Type: GrantFiled: December 17, 2021Date of Patent: October 1, 2024Inventor: Norman R. Byrne
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Patent number: 12099393Abstract: A vehicle includes a power management apparatus including a first voltage sensor detecting a voltage applied to the first main signal line and output first voltage information about the detected voltage; a second voltage sensor detecting a voltage applied to the second main signal line and output second voltage information about the detected voltage; a first communicator communicating with the master control devices connected to the power signal lines, respectively; and a first processor configured to determine whether a failure in power supply of the battery has occurred or a discharge of the battery has occurred based on the first voltage information and the second voltage information received from the first voltage sensor and the second voltage sensor, and determine whether a failure in power supply through the power signal lines has occurred based on pieces of voltage information received from the master control devices, respectively, through the first communicator.Type: GrantFiled: October 18, 2022Date of Patent: September 24, 2024Assignees: Hyundai Motor Company, Kia CorporationInventors: Myoung Soo Park, Sungtae Kim
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Patent number: 12095303Abstract: This application provides a method and device for detecting charging abnormality, and a storage medium. In this application, a first sampling moment corresponding to a first minimum voltage in n sampled voltages is determined based on n consecutive sampled voltages of a first cell from an end moment of an ith charging phase to an end moment of an (i+1)th charging phase in a kth charging process. A second sampling moment corresponding to a second minimum voltage in any one of the first (k?1)th charging processes can be determined in the same way. Then abnormality of the kth charging process is determined.Type: GrantFiled: March 29, 2022Date of Patent: September 17, 2024Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventors: Guangyu Xu, Haili Li, Wei Zhao
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Patent number: 12092699Abstract: In one aspect, a method may include generating an aging battery dataset including information pertaining to age histories of electric vehicles, cell manufacturer specifications, and laboratory tests. Based on the information and battery health metrics associated with battery pack modules, the method may include predicting a first state of health of the battery pack modules. The method may include receiving a second state of health of the battery pack modules, wherein the second state of health is determined based on determined states of charges for the battery pack modules. The method may include determining an uncertainty for the second state of health using a rest duration after and before charging of the battery pack modules. Based on the uncertainty, the first state of health, and the second state of health, the method may include determining a confidence score for the second state of health of the battery pack modules.Type: GrantFiled: August 11, 2023Date of Patent: September 17, 2024Assignee: Eatron Technologies LimitedInventors: Ali Ibrahim Ozkan, Muharrem Ugur Yavas, Can Kurtulus
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Patent number: 12087961Abstract: A battery-centric virtual grid system may include battery modules, each including: one or more battery cells, one or more processors that obtain performance information from the one or more battery cells, the one or more processors configured to identify a respective device being powered by the respective modules from the plurality based on the respective performance information and to determine characteristics of the respective device being powered by the respective module from the plurality based on the performance information or configured to receive data from the respective device powered by the module from the plurality, the one or more transceivers configured to remotely receive and transmit data, thus the respective device becoming part of an IOT network via the respective module, and an enclosure at least partially enclosing the one or more battery cells, the one or more module processors, and the one or more transceivers.Type: GrantFiled: September 12, 2022Date of Patent: September 10, 2024Assignee: LAND ENERGY, INCInventors: George Henry Remington, Evan Painter, Zack Simmering, Scott Colosimo, Garvin Seto
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Patent number: 12085626Abstract: Disclosed is a battery cell diagnosing apparatus, which includes a current measuring unit configured to measure a current of a battery cell; a voltage sensing unit configured to sense a cell voltage of the battery cell; and a first control unit configured to transmit first information of the battery cell including data obtained from the current measuring unit and the voltage sensing unit to an external device, receive second information including diagnostic information of the battery cell obtained based on the first information from the external device, and diagnose an abnormal state of the battery cell based on the first information and the second information.Type: GrantFiled: September 21, 2023Date of Patent: September 10, 2024Assignee: LG Energy Solution, Ltd.Inventors: Sun-Jong Lee, Cheol-Taek Kim
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Patent number: 12072387Abstract: A voltage of a battery cell is measured, and a current flowing through the battery cell is measured. An open circuit voltage (OCV) of the battery cell is estimated based on the measured voltage, the measured current, and an equivalent circuit model based on electrochemistry of the battery cell. At least one of a positive electrode and negative electrode of the battery cell is a mixed electrode containing a plurality of materials. The equivalent circuit model is a model including a diffusion resistance component for each of the plurality of materials for use in the positive electrode and the negative electrode.Type: GrantFiled: November 13, 2019Date of Patent: August 27, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinya Nishikawa, Takashi Iida, Tohru Watanabe
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Patent number: 12055599Abstract: A battery sampling chip and a battery management system. The battery sampling chip includes a selector module, including a first multiplexer and a second multiplexer, wherein the first multiplexer and the second multiplexer are both used to collect status data of a first group of cells; an analog-to-digital conversion module, connected with the first multiplexer and the second multiplexer; and a data control module, used to send alarm information when converted status data sent by the analog-to-digital conversion module are not received within a preset duration. Through redundancy design of the multiplexers, whether the selector module fails or is abnormal can be effectively judged, thus avoiding the battery management system including the battery sampling chip from monitoring incorrect status data.Type: GrantFiled: August 31, 2023Date of Patent: August 6, 2024Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventor: Ye Yang
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Patent number: 12057728Abstract: A charging management method includes charging the battery, stopping charging the battery when a first battery voltage of the battery reaches V1, and displaying prompt information when a working parameter of the battery meets a first condition. The working parameter is first working durations of the battery at a plurality of temperatures, or second working durations of the battery at a plurality of second battery voltages.Type: GrantFiled: September 16, 2019Date of Patent: August 6, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Liangjin Chen, Jingsong Han, Yuxiang Huang
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Patent number: 12042628Abstract: A system and method is disclosed for detecting remaining battery voltage or capacity in an infusion device and generating alarms based on the detection. The battery lifetime extension method includes providing an infusion device that derives its power from a rechargeable battery. The infusion device may derive its power from a rechargeable battery. Furthermore, the infusion device receives, at predetermined intervals of time in real-time sensor data comprising: a voltage, a change in the voltage over the predetermined interval of time, an average current, a temperature, and a remaining voltage or capacity reported by a battery gas gauge integrated circuit (“IC”) associated with the rechargeable battery. An improved and customized neural network model utilizes the sensor data to determine an indicia of the actual remaining voltage or capacity of the rechargeable battery in real-time. The indicia may be used to lengthen and/or abate ongoing medical infusion therapy.Type: GrantFiled: December 30, 2021Date of Patent: July 23, 2024Assignees: Baxter International Inc., Baxter Healthcare SAInventors: Steven Ward Fischer, Matthew Stephen Vogel, Ye Chen
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Patent number: 12025673Abstract: The present technology provides a method of detecting a battery cell having a low voltage defect, including: setting a reference time point when a voltage of a battery is stabilized after a shipping charge, and measuring a first voltage of a battery cell at the reference time point; measuring a second voltage of the battery cell with a temporal interval longer than a period at which a self discharge of the battery cell is suppressed; and determining whether the battery cell has a low voltage defect by comparing a difference (?OCV) between the first voltage and the second voltage with a reference value, wherein the reference value is +3 sigma (?) to +6 sigma (?) in a normal distribution of a voltage drop amount obtained by the measuring of the first voltage and the measuring of the second voltage for a plurality of normal sample battery cell groups.Type: GrantFiled: June 29, 2021Date of Patent: July 2, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventor: Jin Seop Kwak
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Patent number: 12027735Abstract: A fuel cell system 1 includes a fuel cell FC having a plurality of fuel battery cells, a control unit Cnt configured to control power generation of the fuel cell FC, a power storage apparatus S, and a DCDC converter Cnv. The control unit Cnt makes the voltage of the fuel cell FC higher than the voltage of the power storage apparatus S when the power generation by the fuel cell FC is stopped and makes the power generated in the fuel cell FC when the power generation by the fuel cell FC is stopped chargeable to the power storage apparatus S through a first path having diodes D1, D3, D5.Type: GrantFiled: November 17, 2021Date of Patent: July 2, 2024Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yosuke Kakimi
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Patent number: 12024102Abstract: Presented are vehicle control systems and logic for monitoring device batteries to provision virtual key functionality, methods for making/using such systems, and vehicles equipped with such systems. A method of operating a vehicle includes wire or wirelessly connecting a remote keyless entry (RKE) system with a wireless-enabled portable electronic device (PED) of a user. A vehicle controller receives a unique virtual key code from the user's PED to enable use of the RKE system and, after receiving the virtual key code, determines a battery charge level of the PED's battery. The vehicle controller then determines if the battery charge level is less than a preset minimum charge level and if the vehicle powertrain is off. If the powertrain is off and the battery charge level is less than the minimum charge level, the controller responsively commands a resident vehicle subsystem to execute a control operation for charging the PED battery.Type: GrantFiled: May 4, 2022Date of Patent: July 2, 2024Assignee: GM Global Technology Operations LLCInventor: Matthew G. Przybylski
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Patent number: 12021203Abstract: Systems and methods are described herein for reducing electromagnetic interference (EMI) affecting measurements of a battery module monitoring board. A battery module system includes battery cells on a top side and a bottom side of the battery module. Each battery cell is electrically coupled between an adjacent pair of busbars. Each busbar is coupled to at least one sensor wire. One busbar, which spans the top and bottom sides of the battery module, is coupled to two sensor wires such that EMI interference affecting measurement signals (e.g., noise signals accompanying voltage readings) associated with the top side of the battery module are in-phase with one another and the measurement signals associated with the bottom side of the battery module are in-phase with one another, such that the EMI interference generally cancels in measurement calculations.Type: GrantFiled: November 12, 2019Date of Patent: June 25, 2024Assignee: Rivian IP Holdings, LLCInventors: Justin Rodenburg, Jorge Rodriguez
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Patent number: 12019103Abstract: A power measurement apparatus includes a voltage detector, current detector, and power calculator. The voltage detector contactlessly detects an AC voltage of a conductive path to which power is supplied from an AC power source having a magnitude of AC voltage regulated to be a predetermined value, and outputs a first data signal regarding a voltage waveform of the AC voltage of the conductive path. The current detector contactlessly detects an AC current flowing through the conductive path, and outputs a second data signal regarding a current waveform of the AC current of the conductive path. A power calculator receives the first and second data signals, and calculates active power of the conductive path from a product of a second instantaneous voltage and an instantaneous current of the current waveform indicated by the second data signal. The second instantaneous voltage is generated by converting a first instantaneous voltage.Type: GrantFiled: May 29, 2020Date of Patent: June 25, 2024Assignees: Daikin Industries, Ltd., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Yuka Miyake, Hiroshi Dohmae, Akio Suzuki, Jun Fujimoto
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Patent number: 12015295Abstract: A system includes a first charger connected to one of an aircraft, a watercraft, and a vehicle having at least one vehicle battery, a second charger connected to an on board battery pack, and at least one programmable logic controller (PLC) to manage communication between the at least one vehicle battery and the first charger to ensure that the at least one vehicle battery reaches a preset state of charge (SOC), manage communication between the on board battery pack and the second charger to ensure that the on board battery pack reaches the preset SOC, and manage transfer of energy from the on board battery pack to the at least one vehicle battery.Type: GrantFiled: March 3, 2023Date of Patent: June 18, 2024Assignee: Der-X Energy LLCInventor: Jeffrey James Ricketts
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Patent number: 12009541Abstract: An output structure of a battery group, including an output terminal, a circuit board, a first terminal, and a conductive member. The first terminal is electrically connected to the circuit board; the conductive member is electrically connected to the circuit board; the first terminal is welded to the conductive member; and the output terminal is welded to the conductive member or the first terminal. In the output structure provided by this application, the output terminal, the first terminal, and the conductive member are fixedly connected by welding. The output structure has advantages such as stable connection, stable welding quality, easy control, and being not easy to loosen, and can effectively avoid the serious heating caused by the increase of internal resistance at the joint, and thus can avoid the risk of a battery fire caused by the heating.Type: GrantFiled: March 30, 2021Date of Patent: June 11, 2024Assignee: DONGGUAN AMPEREX TECHNOLOGY LIMITEDInventors: Xiaoping Liu, Xiaoming Chen, Li Li
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Patent number: 12002934Abstract: A rechargeable battery state determination method determines whether a rechargeable battery is in a micro-short-circuit-prone state, which is a state that is highly likely to form a micro-short circuit.Type: GrantFiled: April 23, 2021Date of Patent: June 4, 2024Assignee: PRIMEARTH EV ENERGY CO., LTD.Inventors: Tamotsu Fukuma, Hitoshi Suzuki, Daisuke Koba
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Patent number: 12003066Abstract: A universal DC power adaptor for a PRC-148 radio, a PRC-152 radio, a Handheld ISR Transceiver, and similar devices and a method of using the same, is disclosed. The universal DC power adaptor includes mounting and locking features that are common to both the PRC-148 radio and the PRC-152 radio. The universal DC power adaptor further includes certain mounting and locking features that are unique to the PRC-148 radio and other mounting and locking features that are unique to the PRC-152 radio. The universal DC power adaptor also provides an output voltage suitable for both the PRC-148 and PRC-152 radios. Such features also are compatible with the Handheld ISR Transceiver, making the universal DC power adaptor compatible with the ISR Transceiver as well. Additionally, the universal DC power adaptor includes programmable control electronics.Type: GrantFiled: August 9, 2023Date of Patent: June 4, 2024Assignee: LAT Enterprises, Inc.Inventors: Laura Thiel, Giancarlo Urzi, Carlos Cid
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Patent number: 12000895Abstract: A method for predicting an aging state of a battery. A vehicle is also provided that includes at least one battery, the aging state of which is predited using the method and/or the aging behavior of which is improved based on the aging state prediction. A prediction system that is configured to carry out the method is also provided.Type: GrantFiled: October 29, 2020Date of Patent: June 4, 2024Assignee: ROBERT BOSCH GMBHInventors: Christian Simonis, Christoph Woll
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Patent number: 11988722Abstract: A system or method for determining a battery state can include receiving a set of sensor measurements; determining the battery state using a state estimator collocated with the battery; and determining parameters used by the state estimator using a second state estimator operating on a processor remote from the battery.Type: GrantFiled: December 16, 2022Date of Patent: May 21, 2024Assignee: Zitara Technologies, Inc.Inventors: Shyam Srinivasan, Evan Murphy, Jacqueline Maslyn, Dustin Summy, Brian Goodall, Sharon R. Kuo, Megan Pitcavage, Zachary Gima, John Stefanski
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Patent number: 11990777Abstract: A method for operating a battery system. The battery system includes parallel-connected strings. Each string includes at least one battery module. In the battery module, multiple battery cells are interconnected in a series connection and/or in a parallel connection. The strings are switchable on and off from one another. The battery cells and/or battery cell packets are switchable on and off from one another and are bypass-able. The method includes: recognizing a fault of a battery cell; switching off and bypassing the faulty battery cell and/or the faulty battery cell packet which includes the faulty battery cell; switching off the faulty string, which includes the faulty battery cell and/or the faulty battery cell packet; comparing the string voltage of the faulty string to the string voltage of intact strings, in which no fault was recognized; discharging the intact strings if voltage differences between the strings exceed a voltage threshold value.Type: GrantFiled: August 3, 2021Date of Patent: May 21, 2024Assignee: ROBERT BOSCH GMBHInventors: Christoph Woll, Gunther Handte
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Patent number: 11990590Abstract: A battery management apparatus and method according to an embodiment of the present disclosure is directed to obtaining a positive electrode profile and a negative electrode profile for a battery cell in a non-destructive manner by appropriately adjusting a preset negative electrode profile. According to one aspect of the present disclosure, by using the battery profile and the adjusted negative electrode profile for the degraded battery cell, there is an advantage that the positive electrode profile of the degraded battery cell may be easily estimated in a non-destructive manner.Type: GrantFiled: June 3, 2021Date of Patent: May 21, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Du-Seong Yoon, Dong-Wook Koh, Jin-Hyung Lim, Gwang-Hoon Jun, Jeong-Mi Choi, Yoon-Jung Bae
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Patent number: 11988718Abstract: A battery diagnosing apparatus includes: a characteristic value extracting unit for extracting a plurality of characteristic values for each of a plurality of batteries; a dimension reducing unit for reducing a dimension of a characteristic value profile representing a distribution of the plurality of batteries using a predetermined algorithm based on the plurality of characteristic values extracted by the characteristic value extracting unit; and a state diagnosing unit for detecting an outlier in the characteristic value profile whose dimension is reduced by the dimension reducing unit, and diagnosing a state of each of the plurality of batteries based on the detected outlier.Type: GrantFiled: April 8, 2022Date of Patent: May 21, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventor: Yee-Gahng Song
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Patent number: 11978866Abstract: Embodiments of the present invention relate to the field of circuit technology, and disclose a method for correcting a SOC of a battery pack, a battery management system, and a vehicle. The method for correcting an SOC of a battery includes: determining, when a charging process of the battery pack starts, whether an initial SOC value of the battery pack is less than or equal to a preset electricity quantity threshold; when the initial SOC value of the battery pack is less than or equal to the preset electricity quantity threshold, recording state information of the battery pack during the charging process, and generating a differential capacity curve of the battery pack according to the state information; correcting a current SOC value of the battery pack according to the differential capacity curve and a voltage-SOC reference curve of a non-decay zone of the battery pack.Type: GrantFiled: December 30, 2020Date of Patent: May 7, 2024Assignee: Contemporary Amperex Technology Co., LimitedInventors: Mingshu Du, Shichao Li, Jian Ruan, Yizhen Hou, Yanhua Lu, Wei Zhang
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Patent number: 11977121Abstract: Described herein is a device for autonomously monitoring a battery is provided. The device is integrated with the battery (e.g., by being electrically coupled to the battery). The device obtains measurement data by injecting electrical signals into the battery and measuring an electrical response of the battery. The device participates in an authentication protocol with a computing device to verify a unique identity of the device to the computing device. After performing the authentication protocol verifying the unique identity of the device, the device transmits battery data to the computer. Further, techniques for verifying the identity of the battery using measurement data obtained by the device are described herein. The techniques generate a battery signature using the measurement data that is then used to verify the identity of the battery. For example, the battery signature may be used to determine whether the battery is counterfeit or defective.Type: GrantFiled: September 14, 2021Date of Patent: May 7, 2024Assignee: Analog Devices International Unlimited CompanyInventors: Shane O'Mahony, Narsimh Dilip Kamath, Tze Lei Poo, Gina G. Aquilano, Hemtej Gullapalli, Lance Robert Doherty
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Patent number: 11980002Abstract: A holding device, includes: a holding portion configured to hold a shunt resistor; a spacer portion extending from the holding portion and abutting on a front surface of a substrate on which a monitoring unit configured to monitor a current value of a current flowing through the shunt resistor is mounted; and an engaging portion extending from the holding portion and having an engaging claw to be engaged with a back surface of the substrate. The spacer portion separates the holding portion and the substrate from each other such that a connection portion which electrically connects the shunt resistor and the monitoring unit is visible.Type: GrantFiled: February 23, 2022Date of Patent: May 7, 2024Assignee: DENSO TEN LimitedInventors: Kazuya Hashimoto, Hitoshi Enomoto
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Patent number: 11977118Abstract: A tester for a frequency-dependent ground fault interrupt wiring device, including: a tester circuit, including: a switch disposed between a first terminal and a second terminal, wherein a leakage current flows through a leakage path between the first terminal and the second terminal when a voltage is applied across the first terminal and the second terminal, a magnitude of the leakage current being determined, at least in part, by a conductivity of the switch; and a waveform generator configured to generate a periodic output signal having a frequency, wherein the switch is driven to modulate the magnitude of the leakage current such that the leakage current has a frequency substantially equal to a frequency of the waveform generator.Type: GrantFiled: March 1, 2021Date of Patent: May 7, 2024Assignee: Pass & Seymour, Inc.Inventors: Joshua P. Haines, Michael F. McMahon
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Patent number: 11979054Abstract: A solar power generation control device controls a solar power generation system storing electric power generated by a solar panel in a battery. The solar power generation control device includes a detection unit configured to detect a state of the battery, and a controller configured to control, based on the state of the battery, a sleep time for temporarily stopping the solar power generation system when a predetermined sleep condition is satisfied.Type: GrantFiled: August 13, 2021Date of Patent: May 7, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tatsuya Miyoshi, Kazumi Yamada, Koichi Go, Haruki Matsuoka
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Patent number: 11979040Abstract: A method detects electrical fault states of at least one removable battery pack and/or an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be connected to the at least one removable battery pack, using a first monitoring unit integrated in the at least one removable battery pack and a further monitoring unit integrated in the electrical device. The first monitoring unit and the further monitoring unit each count the faulty charging or discharging processes.Type: GrantFiled: July 20, 2021Date of Patent: May 7, 2024Assignee: Robert Bosch GmbHInventors: Christoph Klee, Mickael Segret
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Patent number: 11971458Abstract: In first coupling capacitor, a first terminal is connected to a first connection point on a current path of power storage in a state of being insulated from a ground. Second coupling capacitor has a second terminal connected to a second connection point that is on a current path of power storage and is lower in potential than the first connection point, and second coupling capacitor has a first terminal connected to a second terminal of first coupling capacitor. AC output unit applies a predetermined AC voltage via impedance element to third connection point between the second terminal of first coupling capacitor and the first terminal of second coupling capacitor. Voltage measurement unit measures a voltage at third connection point. Determination unit determines the presence or absence of an electrical fault on the basis of the voltage measured by voltage measurement unit.Type: GrantFiled: December 9, 2019Date of Patent: April 30, 2024Assignee: SANYO Electric Co., Ltd.Inventors: Masato Nakayama, Tomonori Kunimitsu
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Patent number: 11971455Abstract: A mixed chemistry battery is provided. The mixed chemistry battery includes a reference module having a first chemistry and a battery module having a second chemistry that is different that the first chemistry, the battery module is connected to the reference module in series. The mixed chemistry battery also includes a battery monitoring system configured to monitor an open circuit voltage of the reference module, an open circuit voltage of the battery module, and a current flow through the reference module and the battery module. The battery monitoring system is further configured to calculate a state-of-charge (SOC) and state-of-health (SOH) of the battery module based at least in part on a SOC of the reference module.Type: GrantFiled: July 6, 2022Date of Patent: April 30, 2024Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Chengwu Duan, Jian Yao, Dewen Kong, Jingyuan Liu
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Patent number: 11959973Abstract: A multi-fault diagnosis method has the following steps: measuring cell voltages of a battery pack to be diagnosed; constructing a cell voltage sequence according to measured cell voltages of the battery pack to be diagnosed, and calculating a sample entropy value of the cell voltage sequence; setting a correction coefficient for representing voltage fluctuation information, and correcting the sample entropy value through the correction coefficient to obtain a corrected sample entropy value; and judging and outputting a fault type of the battery pack to be diagnosed according to a numerical value change of the corrected sample entropy value. Faults of cells can be accurately diagnosed without a model, sample entropy values under different faults can be distinguished by setting the correction coefficient, the intuitiveness and efficiency of fault detection are improved, and the fault type and time of the lithium-ion cells can be quickly, accurately and stably diagnosed and predicted.Type: GrantFiled: October 23, 2020Date of Patent: April 16, 2024Assignee: SHANDONG UNIVERSITYInventors: Chenghui Zhang, Yunlong Shang, Qi Zhang, Bin Duan
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Patent number: 11949074Abstract: Systems and methods are described herein for reducing electromagnetic interference (EMI) affecting measurements of a battery module monitoring board. A battery module system includes battery cells on a top side and a bottom side of the battery module. Each battery cell is electrically coupled between an adjacent pair of busbars. Each busbar is coupled to at least one sensor wire. One busbar, which spans the top and bottom sides of the battery module, is coupled to two sensor wires such that EMI interference affecting measurement signals (e.g., noise signals accompanying voltage readings) associated with the top side of the battery module are in-phase with one another and the measurement signals associated with the bottom side of the battery module are in-phase with one another, such that the EMI interference generally cancels in measurement calculations.Type: GrantFiled: November 12, 2019Date of Patent: April 2, 2024Assignee: Rivian IP Holdings, LLCInventors: Justin Rodenburg, Jorge Rodriguez
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Patent number: 11942613Abstract: A battery thermal runaway detection sensor system for use within a battery enclosure housing one or more batteries. The system has at least one gas sensor for detecting a venting condition of a battery cell of hydrogen, carbon monoxide or carbon dioxide, and providing a sensed output in real time. A microcontroller determines power management and signal conditioned output on the concentration of specific battery venting gases based on the sensed output from said at least one gas sensor.Type: GrantFiled: December 16, 2022Date of Patent: March 26, 2024Assignee: AMPHENOL THERMOMETRICS, INC.Inventors: Brian Allen Engle, Neil Roberts
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Patent number: 11938909Abstract: A method of operating a vehicle comprising at least a first vehicle retarding subsystem controllable to retard the vehicle, and processing circuitry coupled to the at least first vehicle retarding subsystem, the method comprising the steps of: acquiring, by the processing circuitry from the first vehicle retarding subsystem, at least one value indicative of current energy accumulation by the first vehicle retarding subsystem; and determining, by the processing circuitry, a measure indicative of a retardation energy capacity currently available for retardation of the vehicle, based on: the acquired at least one value indicative of current energy accumulation by the first vehicle retarding subsystem; a predefined model of retardation energy accumulation by the first vehicle retarding subsystem; and a predefined limit indicative of a maximum allowed energy accumulation by the first vehicle retarding subsystem.Type: GrantFiled: September 13, 2018Date of Patent: March 26, 2024Assignee: Volvo Truck CorporationInventors: Kristoffer Tagesson, Leon Henderson
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Patent number: 11942610Abstract: The present invention relates to a pitch-variable battery fixture and a battery cell formation apparatus having the same. A pitch of clamping plates of a plurality of clamping blocks is increased by a slide actuator of the pitch-variable battery fixture, and then the clamping plates are inserted into a plurality of compartments of a battery tray. The clamping plates are urged to clamp batteries by the slide actuator. The battery tray is provided for placement of the batteries, and a compressing force is exerted for shaping the batteries during a battery cell formation. The pitch-variable battery fixture is provided for clamping batteries having different thicknesses. According to the actual thickness of each battery, the thickness of the formed battery can be shaped.Type: GrantFiled: November 11, 2021Date of Patent: March 26, 2024Assignee: CHROMA ATE INC.Inventors: Chih Hsien Chiu, Jui Hung Weng, Chien-Hao Ma, Cheng Chih Hsieh
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Patent number: 11933853Abstract: A battery management system and method are provided, where the battery management system includes a monitoring IC including at least one channel for simultaneously measuring voltages of a battery cell, a busbar connected to the battery cell, and an auxiliary channel configured to measure a reverse voltage of the busbar, wherein the monitoring IC is configured to determine a voltage of the battery cell using a channel voltage measured through the at least one channel and the reverse voltage.Type: GrantFiled: November 5, 2021Date of Patent: March 19, 2024Assignee: Hyundai Mobis Co., Ltd.Inventor: Seulkirom Kim
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Patent number: 11936010Abstract: A method for detecting an anomaly in operating a battery using a battery management system, including an acoustic receiver attached to a battery wall, and a calculating system connected to the acoustic emitter and the acoustic receiver, a mapping defining a first operating region termed the normal operating region, a second operating region termed the at-risk operating region and a third operating region termed the dangerous operating region, the method including at least one first measurement cycle, each being separated from the preceding measurement cycle by a measurement period, each measurement cycle including receiving an acoustic signal by the acoustic receiver, the received signal being transmitted to the calculating system to obtain a measurement point in the mapping; determining the operating region in which the measurement point is located; and when the measurement point is located in the at-risk operating region or in the dangerous operating region, detecting an anomaly.Type: GrantFiled: April 23, 2019Date of Patent: March 19, 2024Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventor: Nicolas Guillet
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Patent number: 11929631Abstract: A method for operating a battery module, including multiple battery cells. The method includes: a) ascertaining cell voltages of the individual battery cells at a starting point in time; b) ascertaining at the starting point in time an average cell voltage from the cell voltages of the battery cells ascertained at the starting point in time; c) estimating the cell voltage of at least one battery cell at an operating point in time if the cell voltage of the battery cell is not measurable at the operating point in time, taking into account the cell voltage of the battery cell ascertained at the starting point in time, the average cell voltage ascertained at the starting point in time, and an average cell voltage ascertained at the operating point in time.Type: GrantFiled: June 7, 2019Date of Patent: March 12, 2024Assignee: ROBERT BOSCH GMBHInventors: Christoph Woll, Alexander Schmidt, Tunan Shen
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Patent number: 11923681Abstract: A method, system, and device for managing off-grid power supply are provided. The method includes acquiring data from one or more loads. The one or more loads are connected to the off-grid power supply. The method further includes modeling the one or more loads based on the acquired data, estimating a state of charge of an energy storage device (ESD) associated with the off-grid power supply, and determining an operational status of each of the one or more loads. The operational status is based on at least the state of charge of the ESD and a category of each of the one or more loads. Each load is controlled based on the operational status.Type: GrantFiled: March 16, 2018Date of Patent: March 5, 2024Assignees: TOTAL SOLAR INTERNATIONAL, NORTH CAROLINA STATE UNIVERSITYInventors: Wente Zeng, Jiahong Yan, Ning Lu, Fuhong Xie
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Patent number: 11906597Abstract: A resistor ladder comprising identical resistors is disposed electrically in parallel with a multicell battery to calibrate voltage-controlled oscillators or analog-to-digital convertors for voltage balancing the battery cells in the multicell battery. Switches in a first state provide the voltage across each resistor as inputs to the VCOs or ADCs. The number of oscillations of the output signal of each VCO or ADC over a predetermined time period are compared to determine an offset error. Switches in a second state provide the voltage across each battery cell as inputs to the VCOs or ADCs. The battery cells with a higher relative voltage can be discharged until they are balanced. Some aspects describe temperature-adjusted and interpolated determinations of electrical quantities in the cells such as voltage and/or current.Type: GrantFiled: January 27, 2021Date of Patent: February 20, 2024Assignee: NOVA SEMICONDUCTOR, INC.Inventor: Ahmad Ashrafzadeh
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Patent number: 11904724Abstract: The invention relates to a method (100) for estimating an operating parameter of a battery cell of a battery unit in an electrical propulsion system of a vehicle, the operating parameter being indicative of one of capacity and impedance of the battery cell, the method comprising: selecting (110) at least one battery cell in the battery unit for determining the operating parameter of the battery cell; providing (120) a set of state-of-charge (SOC) estimators, each SOC estimator having a selected operating parameter value for a given time period; and using (130) the set of SOC estimators to determine a value of the operating parameter of the battery cell by performing voltage error minimization.Type: GrantFiled: September 17, 2018Date of Patent: February 20, 2024Assignee: VOLVO TRUCK CORPORATIONInventors: Esteban Gelso, Jonas Hellgren
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Patent number: 11901751Abstract: An indexed sequence of bits in a buffer is allocated for tracking a battery charging state. The indexed sequence of bits has a first number of bits. A battery voltage of a rechargeable battery is sampled at a sampling rate. For each sampled battery voltage, the battery voltage is compared with a voltage threshold. A next bit position in the indexed sequence of bits is identified. In accordance with a determination that a comparison result is true, a predefined first value is added to the next bit position. A second number of bits that are filled with the predefined first value is determined. A ratio between the second number and the first number is also determined. In accordance with a determination that the ratio exceeds a threshold step-down ratio, a battery charge voltage is stepped down. The rechargeable battery is charged to a step-down voltage.Type: GrantFiled: May 13, 2021Date of Patent: February 13, 2024Assignee: Google LLCInventors: Michael Jonathon Chen, William Alan Saperstein, James Robert Lim, David Wang
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Patent number: 11880513Abstract: Systems and methods for motion mode management include a computer-assisted device having an input control, a repositionable structure, and a controller coupled to the input control and the repositionable structure. The controller is configured to detect motion of the input control for controlling motion of the repositionable structure and in response to determining that the motion of the input control is likely to be confused with a first portion of a motion of the input control for indicating that a mode of operation of the computer-assisted device is to be changed, temporarily disable mode switching in response to motion of the input control.Type: GrantFiled: March 7, 2023Date of Patent: January 23, 2024Assignee: INTUITIVE SURGICAL OPERATIONS, INC.Inventors: Saleh Tabandeh, Caroline A. Edwards, Angel Jeremy Perez Rosillo
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Patent number: 11881573Abstract: The present disclosure relates to a battery pack, and more particularly, to a battery pack, the temperature of which is maintained within a certain range by a heating component or a heat dissipating component attached thereto.Type: GrantFiled: September 12, 2017Date of Patent: January 23, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Ji Myong An, Seog Jin Yoon