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81.发明申请公开(公告)号：US20220247164A1
公开(公告)日：2022-08-04
申请号：US17613499
申请日：2020-06-01
Inventor： Wei CHEN , Chongwei TANG , Yubo GU
IPC: H02H3/08 , G01R19/165 , H02H9/02 , G09G3/32
Abstract: The present application discloses an over-current protection circuit, a driving method for the over-current protection circuit and a display device. The over-current protection circuit includes a detection circuit, a first protection branch and a comparison circuit; where the detection circuit detects the current of a preset detection point in real time and obtains a detection voltage based on the current passing through the detection point; the first protection branch includes a delayer which delays the detection voltage obtained by the detection circuit for a preset time and then outputs a first reference voltage; and the comparison circuit compares the detection voltage with the first reference voltage.
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公开(公告)号：US20220238176A1
公开(公告)日：2022-07-28
申请号：US17456079
申请日：2021-11-22
Applicant: CHANGXIN MEMORY TECHNOLOGIES, INC.
Inventor： Huipeng YANG
Abstract: The embodiments of the present application provide a test board, which is applied in temperature and humidity tests for a memory module, and includes: a memory slot configured to be connected with the memory module; a power supply terminal configured to supply power to the memory module; an overcurrent protection unit connected in series between the memory slot and the power supply terminal and configured to be blown when the memory module is short-circuited; and an indicating unit connected in series between the overcurrent protection unit and a ground terminal and configured to indicate a state of the overcurrent protection unit. The embodiments of the present application provide a test board capable of indicating temperature and humidity test results.
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公开(公告)号：US20220229479A1
公开(公告)日：2022-07-21
申请号：US17595977
申请日：2019-09-27
Inventor： Siheng LUO
Abstract: A power supply unit (PSU)-based power supply system. A first output port of the PSU is connected to a main control component of a main board by using a voltage converter, and is used to supply power to the main control component in a system standby state. A second output port of the PSU may be connected to a load variable component of the main board; or the first output port and the second output port of the PSU may be connected to the load variable component by means of a power switching apparatus, and an enabling end of the PSU is grounded, so that both the first output port and the second output port have a voltage output when the PSU is inserted into the main board. A current value output by the second output port is relatively large load variable, which meets a power supply requirement of the load variable component. The second output port of the PSU is connected to each power-on running component of the main board by means of a switch component, and the switch component is in an off state in the system standby state. After the system is powered on, the switch component is in an on state, so that each power-on running component does not have extra power consumption when the system is in standby mode.
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公开(公告)号：US11374392B2
公开(公告)日：2022-06-28
申请号：US17249377
申请日：2021-03-01
Applicant: Silanna Asia Pte Ltd
Inventor： Guanghua Ye
IPC: H02H3/05 , H02H1/00 , H02H3/08 , H03K17/082 , H03F3/45
Abstract: Embodiments of the disclosure include a switch having an on-state resistance that varies based on a temperature coefficient of the switch and an overcurrent protection circuit coupled to the switch and having an adjustable overcurrent threshold level determined based on an adjustable voltage generated by the overcurrent protection circuit, the adjustable voltage generated based on the temperature coefficient of the switch.
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公开(公告)号：US20220200591A1
公开(公告)日：2022-06-23
申请号：US17598972
申请日：2020-03-25
Inventor： Shinji Aoyama , Hiroshi Kimoto , Nobutoshi Hagiwara , Takumi Matsumoto
IPC: H03K17/0812 , H03K17/687 , H02H3/08 , H03K17/06 , G01R19/00 , H02H7/20
Abstract: In a first series circuit of a power supply control device, a first switch and a first resistor are connected in series. In a second series circuit, a second switch and a second resistor are connected in series. The second series circuit is connected in parallel to the first series circuit. An electric current detection circuit detects an electric current value of an electric current flowing through the first resistor. In a case where specific data is stored in a storage unit, a control unit (open failure detection unit) detects an open failure of the first switch or the second switch on the basis of the electric current value detected by the electric current detection circuit. In a case where the storage unit does not store the specific data, the control unit does not detect the open failure.
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Patent Agency Ranking
公开(公告)号：US20220173585A1
公开(公告)日：2022-06-02
申请号：US17431931
申请日：2020-02-20
Applicant: Future Systems Besitz GmbH
Inventor： Christian Zimmermann , Bernhard Först
Abstract: A load control apparatus (1) for controlling a power supply to an electrical load connected to an output terminal (3) of the load control apparatus (1) comprising: an overcurrent protection circuit (1A) having a power switch (5) through which the electrical load receives an electrical load current (IL) and having a sensor component (4) connected in series with the power switch (5) and adapted to generate directly a voltage drop (ΔU4) corresponding to the current rise speed of the electrical load current (IL) flowing from an input terminal (2) of the load control apparatus (1) via the sensor component (4) and the power switch (5) to the output terminal (3) and having a driver circuit (6) adapted to detect an occurring overcurrent depending on the voltage drop (ΔU4) generated by the sensor component (4) and/or a voltage drop (ΔU5) along the power switch (5) and adapted to switch off said power switch (5) upon detection of an overcurrent within a switch-off period of less than one millisecond; and/or comprising a power supply control circuit (1C) having a sensor component (9) adapted to measure at the input terminal (2) a supply voltage notified to a control unit (8) of the load control apparatus (1) adapted to control an electrical power supplied to the electrical load.
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公开(公告)号：US11349295B2
公开(公告)日：2022-05-31
申请号：US17253184
申请日：2019-06-10
Applicant: AutoNetworks Technologies, Ltd. , Sumitomo Wiring Systems, Ltd. , Sumitomo Electric Industries, Ltd.
Inventor： Shinnosuke Nakaguchi , Masayuki Kato
Abstract: In a power supply control device, a switching device turns a main switch on or off to control supply of power via the main switch. When a battery supplies power to the switching device, a fuse is disposed in a first current path of an output current output from the switching device. A diode is disposed in a second current path of the output current different from the first current path. If a current flowing through the fuse increases to or above a first threshold, the fuse blows. If a current flowing through the diode increases to or above a second threshold, the diode blows.
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公开(公告)号：US20220158433A1
公开(公告)日：2022-05-19
申请号：US17437831
申请日：2020-03-24
Inventor： HIDEKI IWAKI , HIDEKI WATANABE
Abstract: A protection system includes: a first positive terminal; a second positive terminal; a first relay configured to be opened and closed by contact and separation of a first contact portion and a second contact portion; and a fuse. The first relay and the fuse are connected in series between the first positive terminal and the second positive terminal, and when an electric current exceeding a threshold current flows to the first relay, the first contact portion and the second contact portion are separated in the first relay at a first time, and when the first contact portion and the second contact portion are separated, an arc discharge occurs between the first contact portion and the second contact portion, an arc discharge occurs between the first electrode and the second electrode of the fuse at a second time, the arc discharge occurs at both of the first relay and the fuse and a difference in potential between the first electrode and the second electrode of the fuse increases during a period between the second time and a third time, and the first positive terminal and the second positive terminal are disconnected at a fourth time.
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公开(公告)号：US11322916B2
公开(公告)日：2022-05-03
申请号：US16898538
申请日：2020-06-11
Applicant: Atom Power, Inc.
Inventor： Frederick Miller , Taylor Santore , Denis Kouroussis , Ryan Kennedy
Abstract: A solid-state circuit breaker (SSCB) with galvanic isolation capability includes an electrical bus with line-side and load-side terminals and a solid-state device connected in series with a closeable air gap between the line-side and load-side terminals. During normal operating conditions, the solid-state device is switched ON and the SSCB forces movable contacts inside the SSCB to close the air gap, so that an electrical current path is maintained between the line-side and load-side terminals and electrical current is allowed to flow through the SSCB and an attached load. Upon a short circuit or overload of unacceptably long duration occurring in the load circuit, the SSCB switches the solid-state device OFF to prevent current from flowing through the load, and releases the movable contacts to open the air gap and thereby establish galvanic isolation between the line-side and load side terminals.
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公开(公告)号：US20220109293A1
公开(公告)日：2022-04-07
申请号：US17489947
申请日：2021-09-30
Applicant: S&C Electric Company
Inventor： Michael John Meisinger, SR. , David Klein
Abstract: A control system and method for tie point fault interrupter and sectionalizing recloser devices in an electrical grid feeder. The technique enables automated sectionalizing reclosers equipped with three-phase current sensing and single- or three-phase voltage sensing, and able to detect pulse-closing operations, to isolate faults and restore load based on pulse count rather than requiring source re-energization and waiting for loss of voltage timers. The system includes a fault interrupter initiating a pulse-testing sequence upon detecting loss of voltage, where a number of preliminary pulses are used to distinguish transient faults from persistent faults, and pulses are counted by the sectionalizing reclosers to determine which of these devices should open. An alternate configuration is disclosed for reinitializing faults, including the fault interrupter closing if initial pulse testing indicates no fault, and subsequent cycles cause a sectionalizing recloser adjacent the fault to open, allowing the fault interrupter to close and hold.
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