公开(公告)号：US20250070546A1

公开(公告)日：2025-02-27

申请号：US18812043

申请日：2024-08-22

Applicant: Littelfuse, Inc.

Inventor： Yan Fang ,  Jianhua Chen ,  Jun Gang Wang

IPC: H02H5/04 ,  B60R16/02

Abstract: A terminal assembly, arranged for an automobile harness, comprising: a substrate; a modified terminal, arranged as a plate structure that is arranged on the substrate and extends perpendicularly with respect to a plane of the substrate; and a resettable fuse component, the resettable fuse component comprising a polymer positive temperature coefficient (PPTC) material, and coupled in series with the modified terminal.

公开(公告)号：US12184057B2

公开(公告)日：2024-12-31

申请号：US17999052

申请日：2021-05-14

Applicant: FANUC CORPORATION

Inventor： Yuuya Nakagawa

IPC: H02H5/04 ,  H02H1/00

Abstract: The failure detection device detects failure in switches that are selectively switched between conduction and non-conduction in a current path, and includes: two or more temperature sensors in which a resistance value between terminals changes in accordance with temperature changes, the two or more temperatures sensors being provided near two or more of the switches connected to each other in parallel, and the two or more temperatures sensors being electrically connected in series to each other; a detection unit that detects the combined resistance value of the two or more temperature sensors; and a determination unit that determines, based on a combined resistance value, that one or more of the two or more switches has failed.

公开(公告)号：US12100944B2

公开(公告)日：2024-09-24

申请号：US17530468

申请日：2021-11-19

Applicant: Shenzhen Smoore Technology Limited

Inventor： Feng Xiao ,  Huakai Yuan

IPC: H02H5/04 ,  B05B15/14 ,  A24F40/50 ,  A24F40/57

CPC classification number: H02H5/047 ,  B05B15/14 ,  A24F40/50 ,  A24F40/57

Abstract: The present disclosure discloses a controlling device and an electronic atomization device, the controlling device includes an atomizing output circuit, a protecting circuit and a controller. The atomizing output circuit is configured to be electrically connected with the atomizer and apply a voltage to the atomizer. The protecting circuit includes a temperature sensitive unit, and the temperature sensitive unit is configured to sense a temperature of the atomizer. The controller is electrically connected with the atomizing output circuit, and configured to control the atomizing output circuit. The protecting circuit is configured to control the atomizing output circuit according to the temperature of the atomizer sensed by the temperature sensitive unit. In response to the temperature of the atomizer is higher than a predetermined value, the protecting circuit makes the electrical connection between the atomizing output circuit and the atomizer being disconnected.

公开(公告)号：US12095259B2

公开(公告)日：2024-09-17

申请号：US17755373

申请日：2020-11-09

Applicant: DEXERIALS CORPORATION

Inventor： Yuji Furuuchi ,  Chisato Komori

IPC: H02H7/18 ,  H01H37/76 ,  H02H5/04 ,  H02J7/00

CPC classification number: H02H7/18 ,  H01H37/76 ,  H02H5/047 ,  H02J7/00304 ,  H02J7/0031

Abstract: Provided is a protection circuit capable of reliably preventing an overcurrent or a sneak current after cutoff to improve safety, implementing cost reduction with a device configuration simpler than conventional device configurations, and further reducing a failure rate of a device. In a protection circuit, after one of two fuse elements provided in each of a plurality of protection elements is blown due to an overcurrent flowing along a current-carrying path, a heater provided in at least one of the plurality of protection elements generates heat due to a sneak current flowing via the plurality of protection elements on the current-carrying path which is remained and the current-carrying path which is remained is cut off due to destruction of the heater.

公开(公告)号：US12095254B2

公开(公告)日：2024-09-17

申请号：US18071621

申请日：2022-11-30

Applicant: LEAP Semiconductor Corp.

Inventor： Wei-Fan Chen ,  Kuo-Chi Tsai

IPC: H02H5/04 ,  G01K3/00 ,  G01K7/01 ,  H01L27/06

CPC classification number: H02H5/044 ,  G01K3/005 ,  G01K7/01 ,  H01L27/0629

Abstract: An electronic device and a temperature detection device thereof are provided. The temperature detection device includes a differential stage circuit and an output stage circuit. The differential stage circuit includes a first differential end and a second differential end, and includes a cross-coupled transistor element, a first resistor and a second transistor. The cross-coupled transistor element receives a first voltage. The first resistor is coupled between the first differential end and a second voltage, and the first resistor is poly-silicon resistor. The second resistor is coupled between the second differential end and the second voltage, and the second resistor is a silicon carbide diffusion resistor. The output stage circuit generates a driving voltage according to a first control voltage on the first differential end and a second control voltage on the second differential end.

公开(公告)号：US12081115B2

公开(公告)日：2024-09-03

申请号：US17796269

申请日：2020-03-24

Applicant: Mitsubishi Electric Corporation

Inventor： Yohei Mitsui ,  Yasutaka Imamura ,  Junichi Nakashima

IPC: H02M1/32 ,  G01K7/24 ,  H02H5/04 ,  H03K17/08

CPC classification number: H02M1/327 ,  G01K7/245 ,  H02H5/04 ,  H03K2017/0806

Abstract: A semiconductor drive device includes a drive circuit that drives a semiconductor switching element, a passive element connected to a gate of the semiconductor switching element to prevent a gate current of the semiconductor switching element, a switching element connected in series to the passive element, a control circuit that controls the switching element, and a temperature detection circuit that detects a temperature of the semiconductor switching element. The control circuit controls the switching element such that when the temperature detected by the temperature detection circuit is high, the gate current is prevented more than when the temperature is low.

公开(公告)号：US12074428B2

公开(公告)日：2024-08-27

申请号：US17837029

申请日：2022-06-10

Applicant: YAZAKI CORPORATION

Inventor： Hayato Yamaguchi ,  Sadaharu Okuda

IPC: H02H5/04 ,  G01R19/25 ,  H02H1/00 ,  H02H3/087

CPC classification number: H02H5/047 ,  G01R19/2513 ,  H02H1/0007 ,  H02H3/087

Abstract: A current detecting device includes a sense resistor through which a sense current corresponding to a consumption current supplied to a load flows, and an A/D converter configured to perform A/D conversion on a voltage drop generated by the sense current flowing through the sense resistor to detect the consumption current. A resistance value of the sense resistor is variably provided.

公开(公告)号：US20240250517A1

公开(公告)日：2024-07-25

申请号：US18416451

申请日：2024-01-18

Applicant: Danfoss Power Electronics A/S

Inventor： Zhi Gao ,  Stefan Schroeder ,  Markus Sjoblom ,  Kenneth Dean

IPC: H02H5/04 ,  H02M7/00 ,  H02M7/537

CPC classification number: H02H5/047 ,  H02M7/537 ,  H02M7/003

Abstract: A method for providing thermal protection to a pre-charge unit (PRC) of an electric power conversion system, such as a medium-voltage adjustable-speed drive, with a step-up transformer and a DC link includes the steps of executing a parameter identification block identifying the electrical and thermal parameters of the PRC; of an electric power conversion system executing a current estimation block estimating the current flowing though the PRC's step-up transformer based on a voltage input; executing a thermal level estimation block estimating a thermal level at the PRC's step-up transformer based on the estimated current flowing though the PRC's step-up transformer; executing a protection logic block comparing the estimated thermal level to a pre-determined trip threshold to determine whether a thermal overload has occurred; and outputting a trip signal if the trip threshold has been exceeded. The disclosure further discloses an electric power conversion system, such as a medium-voltage adjustable-speed drive, with a step-up transformer and a DC link for executing a corresponding method.

公开(公告)号：US20240222956A1

公开(公告)日：2024-07-04

申请号：US18609657

申请日：2024-03-19

Applicant: Siemens Industry, Inc.

Inventor： Guang Yang

IPC: H02H5/04 ,  H02H1/00 ,  H02H3/20

CPC classification number: H02H5/047 ,  H02H1/0007 ,  H02H3/20

Abstract: An electronic circuit breaker is configured to provide a fail-safe mode. It comprises at least one overvoltage component, a temperature sensor attached to the at least one overvoltage component and a sensing and control circuit configured to monitor temperatures of the at least one overvoltage component. There are two criteria to decide if the electronic circuit breaker should open, when either criterion is met. The first criteria is if monitored temperatures exceed max safe temperature at any time and the second criteria is if the monitored temperatures increase at two different time moments during start up.

公开(公告)号：US20240178654A1

公开(公告)日：2024-05-30

申请号：US18491058

申请日：2023-10-20

Applicant: OMRON CORPORATION

Inventor： Kenichi TABATA ,  Daiki ANDO ,  Hidetoshi YUGEN

IPC: H02H5/04 ,  G01R31/327

CPC classification number: H02H5/04 ,  G01R31/3278 ,  H02J3/14

Abstract: A power cutoff device (20) comprises a power relay (21), a temperature calculation unit (22a), and a determination unit (22b). The power relay (21) includes a drive coil (21a). The temperature calculation unit (22a) calculates the temperature of the drive coil (21a) by calculating the resistance value of a resistor that changes with temperature when the drive coil (21a) included in the power relay (21) is regarded as a resistor. The determination unit (22b) determines whether or not to cut off the power supply on the basis of the temperature of the drive coil (21a) calculated by the temperature calculation unit (22a).