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公开(公告)号：US20220283241A1
公开(公告)日：2022-09-08
申请号：US17632667
申请日：2020-09-16
发明人： Hyeon-Jin Song
IPC分类号： G01R31/392 , G01R19/12 , H02J7/00 , G01R31/396
摘要： A battery management apparatus includes a measuring unit configured to measure a voltage of each of a plurality of battery cells, a converter connected to corresponding battery cells among the plurality of battery cells and configured to form a charge and discharge path between the connected battery cells according to an operation state of a switch included therein, and a control unit configured to receive a voltage value of each of the plurality of battery cells from the measuring unit, control the operation state of the switch included in the converter, calculate a voltage change rate of a charging cell charged by the converter according to the control of the operation state of the switch, and determine whether the charging cell is degraded based on the calculated voltage change rate.
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公开(公告)号：US20210325476A1
公开(公告)日：2021-10-21
申请号：US17272390
申请日：2020-02-27
申请人： LG Chem, Ltd.
发明人： Yoon-Jung Bae , Hye-Jin Kang
IPC分类号： G01R31/392 , G01R31/3835 , G01R31/396 , G01R19/12
摘要： A battery state estimating apparatus includes: a voltage measuring unit configured to measure a voltage of a battery cell and measure an open circuit voltage (OCV) of the battery cell whenever the measured voltage reaches a reference discharge voltage; and a control unit configured to receive the OCV measured by the voltage measuring unit, compare the received OCV with a pre-stored reference voltage to calculate a voltage fluctuation rate, determine a voltage increase and decrease pattern based on the calculated voltage fluctuation rate and pre-stored voltage fluctuation rate data, and determine a degradation acceleration degree of the battery cell according to the determined voltage increase and decrease pattern.
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公开(公告)号：US20210203786A1
公开(公告)日：2021-07-01
申请号：US16730776
申请日：2019-12-30
摘要： Aspects of the disclosure provide for a circuit, in some examples, including a storage element, a co-processor, and a telemetry sequencer coupled to the storage element and the co-processor. The telemetry sequencer is configured to implement a digital state machine to receive configuration information indicating a type of telemetry data for generation, retrieve operations and operands, where the operations and the operands define a sequential series of actions for execution to generate the telemetry data, drive the co-processor with the operations and the operands by passing some of the operations and some of the operands to the co-processor for processing by the co-processor, receive, from the co-processor, and store an intermediate output of the series of actions as the telemetry data in a first format, and receive, from the co-processor, and store a final output of the series of actions as the telemetry data in a second format.
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公开(公告)号：US10884071B2
公开(公告)日：2021-01-05
申请号：US16422563
申请日：2019-05-24
发明人： Dale John Butler
IPC分类号： H02H3/00 , G01R31/50 , G01R31/40 , H02S50/10 , H02H1/00 , H02H3/38 , H02H7/20 , G01R19/12 , G01R19/165
摘要： An electrical supply system including a voltage converter including having an input electrically coupled to a supply for receiving a supply signal and an output for supplying an output signal having a output voltage different to a supply voltage of the supply signal. The system includes a diode including a diode input electrically coupled to the voltage converter output, a bus electrically coupled to a diode output and at least one of a load and a store, a voltage sensor for detecting the output voltage, a current sensor for detecting a diode input current and an electronic processing device coupled to the sensors for monitoring the diode input current and the output voltage and detecting a fault in the electrical supply system based on at least the diode input current and output voltage.
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公开(公告)号：US10778001B2
公开(公告)日：2020-09-15
申请号：US16604751
申请日：2017-04-18
发明人： Kenta Uchida , Ryosuke Nakagawa
IPC分类号： H02H7/12 , G01R19/12 , G01R19/165 , H02H1/00 , H02M7/537
摘要： An overcurrent detection circuit includes a di/dt detection circuit to detect di/dt of a current Ie that flows in an emitter of an IGBT, a control circuit to detect whether the current Ie is an overcurrent based on di/dt and to output a detection result to a driving circuit, and a mask circuit to set a mask period in which an operation of overcurrent determination in the control circuit is masked.
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公开(公告)号：US20200158764A1
公开(公告)日：2020-05-21
申请号：US16626599
申请日：2018-06-19
申请人： SIGNIFY HOLDING B.V.
发明人： Hong CHEN
摘要： A sensing device is for sensing an operating voltage of a remote device. A communications interface receives communications signals originating from the remote device over a communications bus. A data sampler takes data readings of a communications signal at a predetermined set of timing instants defined by the sensing device. A data metric (such as a duty cycle of high and low states) is obtained from the data readings and from this 5 an operating voltage of the remote device is obtained, based on a relationship between the voltage and the data metric. The invention is based on detecting timing changes which result from voltage changes. In particular, the slope of rising and falling edges of the communications signal are influenced by the voltage level, and this in turn influences the timing of high states (1s) and low states (0s).
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公开(公告)号：US20200153238A1
公开(公告)日：2020-05-14
申请号：US16184774
申请日：2018-11-08
发明人： David Loder
摘要： A Direct Current fault protection and localization system utilizing a Rogowski coil adapted to perform current limiting on the main power line in the case of a line to line fault.
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8.发明授权公开(公告)号：US10469057B1
公开(公告)日：2019-11-05
申请号：US16152652
申请日：2018-10-05
摘要： A gate driver integrated circuit (IC) and a method of operating the same is provided. The gate driver IC is configured to drive a transistor between switching states in a power circuit, and includes a memory configured to store at least one measurement window parameter that defines a measurement interval; measurement circuitry configured to measure, over the measurement interval, a value corresponding to an operation of the power circuit, the measured value being proportional to an input capacitance of the transistor; processing circuitry configured to determine a correction factor based on the measured value, the correction factor being proportional to the input capacitance of the transistor; and a gate controller configured to control a gate current of the transistor based on the switching states and the correction factor.
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公开(公告)号：US10073143B2
公开(公告)日：2018-09-11
申请号：US15126605
申请日：2015-02-26
申请人： Robert Bosch GmbH
CPC分类号： G01R31/3835 , G01R19/12 , G01R31/025 , G01R31/382 , H01M10/48
摘要： The invention relates to a method for detecting anomalies in a battery cell (22), wherein a short-circuit sensor system (20) detects events (44) in a signal of a terminal voltage of the battery cell, which events have successive edges in an interval of time of microseconds, and wherein events detected by the short-circuit sensor system are transmitted to a battery management system (16) which determines anomalies in the battery cells using the detected events. A short-circuit sensor system (20) and a battery system (12) which are set up to carry out the method are also stated.
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公开(公告)号：US20170356935A1
公开(公告)日：2017-12-14
申请号：US15453100
申请日：2017-03-08
CPC分类号： G01R15/181 , G01R3/00 , G01R19/12
摘要： The present disclosure provides an improved Rogowski-type current sensor. The current measurement coil, and the compensation coil are provided on the same board. The measurement coil and the compensation coil are arranged such that they at least partially overlap by virtue of each repeatedly changing side of the board. This arrangement makes the current sensor far better at rejecting interference than certain other PCB Rogowski type coil arrangements.
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