公开(公告)号：US20240361402A1

公开(公告)日：2024-10-31

申请号：US18639939

申请日：2024-04-18

申请人： YAZAKI CORPORATION

发明人： Hiromichi Hanaoka

IPC分类号： G01R31/52 ,  G01R31/40 ,  H02J7/00

CPC分类号： G01R31/52 ,  G01R31/40 ,  H02J7/00304 ,  H02J7/0047

摘要： A short-circuit determination circuit includes a current detection unit, a voltage detection unit, and a short-circuit determination unit. The current detection unit detects the current flowing in a power circuit. The voltage detection unit detects the voltage applied to the power circuit. The short-circuit determination unit determines a short circuit in the power circuit on the basis of the difference between a detection value of the current detected by the current detection unit and a detection value of the voltage detected by the voltage detection unit.

公开(公告)号：US12132445B2

公开(公告)日：2024-10-29

申请号：US18072749

申请日：2022-12-01

申请人： SMA Solar Technology AG

发明人： Martin Sabban

IPC分类号： H02S50/10 ,  G01R31/52 ,  H02S50/00

CPC分类号： H02S50/10 ,  G01R31/52

摘要： The disclosure is directed to a detection device for detecting a fault current (Ifault) at a PV generator and/or at DC lines of a PV installation assigned to the PV generator. The PV generator has at least one first PV string and a second PV string, which are connected to a PV inverter of the PV installation via in each case two DC lines. In this case, the detection device has at least one current transformer and an evaluation circuit connected to the at least one current transformer. The current transformer can be used jointly by the first PV string and the second PV string, wherein a measurement signal of the jointly usable current transformer represents a difference between a first summation current (Isum,1) flowing from the first PV string towards the ground potential (PE) and a second summation current (Isum,2) flowing from the second PV string towards the ground potential (PE). The fault current (Ifault), when it arises, is a part of the first summation current (Isum,1) and/or the second summation current (Isum,2). The disclosure also includes a PV inverter having a corresponding detection device and also a method for detecting a fault current (Ifault).

公开(公告)号：US12123924B2

公开(公告)日：2024-10-22

申请号：US17758010

申请日：2020-12-24

申请人： NIPPON KAYAKU KABUSHIKI KAISHA

发明人： Hiroshi Nakamura ,  Takuto Yoshioka

IPC分类号： G01R31/52 ,  B64C39/02 ,  B64D17/72 ,  B64D25/00 ,  G01R31/54

CPC分类号： G01R31/52 ,  B64C39/02 ,  B64D17/72 ,  B64D25/00 ,  G01R31/54

摘要： A circuit abnormality diagnosis device includes a calculation unit, an inspection power supply, a rectifier element, overcurrent preventing resistors and a voltage amplification unit, a voltage reading unit, and a light emitting unit. It performs a circuit abnormality diagnosis at a preset time (including the time of initial mounting) or every predetermined time. The device determines that a case where a voltage value is within a range of a first voltage value V1 or more and a second voltage value V2 or less, which is set in advance as a range of voltage values indicating that a circuit is normal, is a normal state, a case where the voltage value is less than the voltage value V1 is a short-circuit state in which the circuit is short-circuited, and a case where the voltage value is higher than the voltage value V2 is a disconnection state which the circuit is disconnected.

公开(公告)号：US12123904B2

公开(公告)日：2024-10-22

申请号：US17653666

申请日：2022-03-07

申请人： Volvo Car Corporation

发明人： Fatih Al ,  Torbjörn Larsson

IPC分类号： G01R31/00 ,  B60L53/60 ,  G01R27/02 ,  G01R31/52

CPC分类号： G01R31/006 ,  B60L53/60 ,  G01R27/02 ,  G01R27/025 ,  G01R31/52

摘要： Electrical circuits, systems, methods, and/or computer program products that can facilitate isolation resistance monitoring for high voltage buses are addressed. In one example, a system can comprise an electrical circuit further comprising one or more resistors and a voltage meter which measures voltage, such that the voltage measurement assists with monitoring isolation resistance, simultaneously, for a smartcell system of an electric vehicle, and for a direct current (DC) charging source external to the electric vehicle.

公开(公告)号：US12123799B2

公开(公告)日：2024-10-22

申请号：US16765564

申请日：2018-11-09

申请人： HAMAMATSU PHOTONICS K.K.

发明人： Takashi Kasahara ,  Katsumi Shibayama ,  Masaki Hirose ,  Toshimitsu Kawai ,  Hiroki Oyama ,  Yumi Kuramoto

IPC分类号： G01M11/00 ,  G01J3/02 ,  G01J3/26 ,  G01R1/067 ,  G01R27/26 ,  G01R31/52 ,  G02B5/28 ,  G02B26/00

CPC分类号： G01M11/00 ,  G01J3/0243 ,  G01J3/26 ,  G01R1/0675 ,  G01R27/2605 ,  G01R31/52 ,  G02B5/28 ,  G02B26/001

摘要： An electrical inspection method includes: a step of preparing a wafer in which a plurality of Fabry-Perot interference filter portions is formed, each of the plurality of Fabry-Perot interference filter portions in which a distance between a first mirror portion and a second mirror portion facing each other varies by an electrostatic force; and a step of inspecting electrical characteristics of each of the plurality of Fabry-Perot interference filter portions.

公开(公告)号：US12111361B2

公开(公告)日：2024-10-08

申请号：US17874794

申请日：2022-07-27

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Myeongjae Lee ,  Jinho Kim ,  Ju Wan Lim ,  Youngjae Kim ,  Young Hun Sung ,  Tae Won Song ,  Terrance Christopher Huang

IPC分类号： G01R31/367 ,  G01R31/3835 ,  G01R31/52 ,  H02J7/00

CPC分类号： G01R31/367 ,  G01R31/3835 ,  G01R31/52 ,  H02J7/0048 ,  H02J7/007182 ,  H02J7/007192

摘要： A method and apparatus with battery short circuit detection are included. In one general aspect, a processor-implemented method includes, based on battery data measured by a battery and a battery model of the battery, determining a detection parameter value used for detecting a short circuit of the battery and a variation factor value correlated with the detection parameter, using the variation factor to extract a reference value corresponding to the detection parameter value from a reference data set, and determining whether a short circuit of the battery has occurred based on a result of comparing the detection parameter value with the reference value.

公开(公告)号：US20240329153A1

公开(公告)日：2024-10-03

申请号：US18127871

申请日：2023-03-29

申请人： Arm Limited

发明人： Ashwani Kumar Srivastava ,  Yves Thomas Laplanche ,  Ramesh Manohar

IPC分类号： G01R31/52

CPC分类号： G01R31/52

摘要： Various implementations described herein are related to a device with fabrication test circuitry having transistors arranged in a parallel branch configuration between a supply voltage and a single pad. In some applications, each transistor in an off-current branch may be separately deactivated so as to test leakage current applied to the pad by way of the off-current branch, and also, each transistor in an on-current branch may be deactivated so as to further test the leakage current applied to the pad by way of the off-current branch.

公开(公告)号：US20240326628A1

公开(公告)日：2024-10-03

申请号：US18613325

申请日：2024-03-22

申请人： VOLVO PENTA CORPORATION

发明人： Simon LANNETOFT

IPC分类号： B60L53/62 ,  B60L53/18 ,  B60L53/30 ,  G01R31/52

CPC分类号： B60L53/62 ,  B60L53/18 ,  B60L53/305 ,  G01R31/52 ,  B60L2200/32

摘要： A computer system comprising a processor device is configured to identify a charging start of the battery provided in an electric marine vessel, actuate, in response to identifying the charging start of the battery, a switch on a protective earth cable from a disconnected state to a connected state, wherein the PE cable is provided between a PE shore connection point on shore and a PE hull connection point on the vessel, initiate charging of the battery via a charging cable connecting the battery on the vessel to a power supply connection point on the shore, identify a charging end of the battery, and actuate, in response to identifying the charging end of the battery, the switch on the PE cable from the connected state to the disconnected state.

公开(公告)号：US20240326625A1

公开(公告)日：2024-10-03

申请号：US18293446

申请日：2022-03-04

申请人： ABB E-mobility B.V.

发明人： Stefan J. Raaijmakers

IPC分类号： B60L53/60 ,  G01R19/00 ,  G01R27/18 ,  G01R31/52

CPC分类号： B60L53/60 ,  G01R19/0084 ,  G01R27/18 ,  G01R31/52

摘要： The present disclosure provides a forced symmetry IMD and a method to control the forced symmetry IMD. The system comprises an electric system power source configured to deliver electrical power to a bus, the bus including a first bus bar and a second bus bar; a common node connected across the first bus bar and the second bus bar, the common node having a common voltage; and a forced symmetry insulation monitoring device (IMD) disposed along an IMD node connected to at least one of the first bus bar and the second bus bar, the forced symmetry IMD comprising a connection to ground and one or more IMD power sources, wherein the one or more IMD power sources of the forced symmetry IMD is configured to control the common voltage on the common node based on a currently detected common voltage and a reference voltage signal.

公开(公告)号：US20240302424A1

公开(公告)日：2024-09-12

申请号：US18180574

申请日：2023-03-08

申请人： Pratt & Whitney Canada Corp.

发明人： Antwan Shenouda

IPC分类号： G01R31/12 ,  G01R31/52 ,  H02H1/00

CPC分类号： G01R31/1218 ,  G01R31/52 ,  H02H1/0023

摘要： An arc detection assembly is provided and includes a first conductor comprising a first terminal end, a second conductor comprising a second terminal end, an enclosure to partially enclose a space in which the first and second terminal ends are engageable to form an electrical connection and an optical detection system. The optical detection system includes an optical element within the enclosure with a line-of-sight to an engagement of the first and second terminal ends and a sensor. The sensor is displaced from the enclosure and coupled to the optical element. The sensor is configured to determine when the optical element senses an arcing condition between the first and second terminal ends.