Thermal Sensing Patents (Class 361/93.8)
  • Patent number: 10739207
    Abstract: A temperature abnormality detection method for a power conversion apparatus basically includes a detecting a first power converter temperature, a second power converter temperature and a cooling water temperature and then determining a presence of an abnormality in a preceding stage power converter based on a first temperature difference between the first power converter temperature and the cooling water temperature. The abnormality detection method further includes determining a presence of an abnormality in a subsequent stage power converter based on a second temperature difference between the second power converter temperature and an added temperature that is obtained by adding to the loss component of the preceding stage power converter converted to a temperature to the cooling water temperature.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: August 11, 2020
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Sho Maruyama
  • Patent number: 10622169
    Abstract: A circuit interrupter includes separable contacts, a trip actuator structured to cause the separable contacts to trip open, a conductor structured to carry power through the circuit interrupter, a sensor having a forward bias voltage drop inversely proportional to temperature and being disposed proximate the conductor, an amplifier circuit electrically connected to the sensor and being structured to amplify the forward bias voltage drop of the sensor, and a comparator circuit structured to compare the amplified forward bias voltage drop with a predetermined reference voltage and to output a signal to the trip actuator when the amplified forward bias voltage drop is less than or equal to the predetermined reference voltage. The signal causes the trip actuator to cause the separable contacts to trip open.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: April 14, 2020
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Steven Christopher Schmalz, Xin Zhou
  • Patent number: 10597002
    Abstract: A sensor and a system using the sensor are described. The sensor may comprise: a cover; and a positive temperature coefficient (PTC) shroud located at a periphery of the cover. The system may include one or more such sensors in a passage of a housing. The system further may comprise a blower that moves air through the passage and across at least a portion of the sensor(s).
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: March 24, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Segundo Baldovino, Prashant Dubey, Venkatesh Krishnan, Laron Michelle Brown
  • Patent number: 10522997
    Abstract: A load current control apparatus according to the present invention includes a current detecting circuit adapted to detect an electric current on a power supply line used to supply electric power from a power supply unit to a load device, a field effect transistor adapted to turn on and off the power supply line, and a controller adapted to control the field effect transistor according to the electric current on the power supply line, in which the controller starts counting time from a time point when the electric current on the power supply line exceeds the overcurrent detection threshold while maintaining the field effect transistor in an ON state, sets an upper limit time corresponding to the electric current on the power supply line at that time as a time threshold based on a relationship between electric current and time set beforehand according to electrical characteristics of the field effect transistor, and turns off the field effect transistor when a time period corresponding to the time threshold el
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: December 31, 2019
    Assignee: FDK CORPORATION
    Inventor: Norio Fukui
  • Patent number: 10326266
    Abstract: In an interrupting device, a CPU temporally calculates a temperature difference between an ambient temperature of an electrical wire and an electrical wire temperature, based on current information indicating a value of current flowing through the electrical wire, and adds the ambient temperature of the electrical wire to the calculated temperature difference. In this way, the CPU temporally computes the electrical wire temperature. In the case where the electrical wire temperature computed by the CPU is greater than or equal to a threshold temperature, a FET turns off and current flowing through the electrical wire is interrupted. The CPU suspends computation of the electrical wire temperature, in the case where the calculated temperature difference is less than a reference temperature difference and the current value indicated by the current information is less than a reference current value.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: June 18, 2019
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventor: Yuuki Sugisawa
  • Patent number: 10193323
    Abstract: A semiconductor device includes a semiconductor switching element, a correction current voltage generation circuit, a voltage dividing circuit, an overcurrent protection circuit, and a drive circuit. The switching element is capable of outputting a sense current from its sense terminal. A sense resistor receives the sense current from the sense terminal and produces a sense voltage. The correction current voltage generation circuit generates a correction voltage. The voltage dividing circuit can output a corrected sense voltage by performing resistance voltage dividing on the sense voltage and the correction voltage with resistors. The overcurrent protection circuit is supplied with the corrected sense voltage and outputs a halt signal to the drive circuit when the corrected sense voltage Vin is higher than a threshold voltage.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: January 29, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventor: Kei Hayashi
  • Patent number: 10101393
    Abstract: One embodiment describes a method that includes determining, using a control circuitry, temperature of a switching device before a make operation by applying a measurement current to an operating coil of the switching device, wherein the measurement current is insufficient to make the switching device; and determining voltage at the operating coil when the measurement current is applied, in which the voltage at the operating coil is directly related to the temperature. The method further includes determining, using the control circuitry, when to apply a pull-in current to the operating coil to close the switching device based at least in part on the voltage at the operating coil, such that the switching device makes at a desired time.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: October 16, 2018
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Christopher H. Bock, Christopher J. Wieloch, James J. Kinsella, Stefan T. Dziekonski
  • Patent number: 9780464
    Abstract: A connector component is disclosed. The connector may include an electrically-conductive clamp element configured to clamp a contact element to a surface element. The surface element may be electrically-conductive and may be inserted into the clamp element using a recess in a lateral edge of the surface element to provide additional surface area for an electrical connection. The clamp element may be a lamella contact. The surface element may be at least one contact blade. The clamp element may include two laterally-spaced clamp elements. The connector component may also include a contact element that is inserted into the two clamp elements.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: October 3, 2017
    Assignee: Lisa Draexlmaier GmbH
    Inventor: Michael Wortberg
  • Patent number: 9449778
    Abstract: The object of the invention is a combined surge protection device with an integrated spark gap and with a fuse connected in series thereto, wherein the spark gap has two main electrodes and one auxiliary ignition electrode, having a housing with a first connector and a second connector, with the first connector being electrically connected to the fuse, and with the second connector being electrically connected to the first main electrode of the spark gap, and with the second main electrode of the spark gap being electrically connected to the fuse on the interior of the housing, with the combined surge protection device also having an auxiliary fuse element that is connected electrically on one side to the first connector, and with the auxiliary fuse element being connected on the other side via an ignition circuit, which is arranged on the interior of the housing, to the auxiliary ignition electrode, with the combined surge protection device having another connector in the region of the auxiliary fuse elem
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: September 20, 2016
    Assignee: PHOENIX CONTACT GMBH & CO. KG
    Inventor: Rainer Durth
  • Patent number: 9325165
    Abstract: A device is disclosed for protecting a consumer, with a first current path having two lines, and a monitoring arrangement for detecting an imminent overload of the electrical consumer. In order to enable the detection of an imminent overload of a consumer, it is proposed that the monitoring arrangement includes a first temperature measuring unit, an evaluation unit and a first measuring element, which establishes an electrically conductive connection between the two lines of the first current path. The first temperature measuring unit is electrically isolated from the first measuring element and includes a first and a second temperature sensor. The first and second temperature sensor of the first temperature measuring unit are configured to simultaneously record a temperature of the first measuring element and the evaluation unit is configured to detect an imminent overload of the consumer based upon the recorded temperatures of the first temperature measuring unit.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: April 26, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Klaus Behringer, Martin Maier, Klaus Pfitzner, Bernhard Rösch
  • Patent number: 9236727
    Abstract: Provided is a current mode step-down switching regulator which is capable of enhancing over-current limiting characteristics even when an over-current limiting function operates to reduce an output voltage. The current mode step-down switching regulator includes a pulse adjusting circuit. When an over-current is detected, a switching output signal is thinned out by the pulse adjusting circuit to be outputted in order to reduce an apparent oscillation frequency, thereby reducing an influence by response delay in an over-current detecting comparator.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: January 12, 2016
    Assignee: SEIKO INSTRUMENTS INC.
    Inventor: Atsuo Fukui
  • Patent number: 9086691
    Abstract: A method, apparatus, and computer program product is provided for configuring a microgrid. A first configuration of the microgrid having a set of microgrid elements is initialized. An address for each element in the set of microgrid elements of the microgrid is verified. In response to receiving status data from the set of microgrid elements connected in a peer-to-peer network indicating a reconfiguration of the microgrid, the set of microgrid elements is re-aligned to form a second grid configuration. The second grid configuration is executed.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: July 21, 2015
    Assignee: THE BOEING COMPANY
    Inventors: Michael A. Carralero, Jimmy M. Quiambao, Dale Kenneth Pounds
  • Patent number: 9083179
    Abstract: A load circuit disconnection detector includes: a current sensor (16) for detecting current flowing through a wire (W1) of a load circuit; and a protective device (100) for estimating temperature of the wire (W1) based on the detected current and forcibly turning off a semiconductor switch (Q1) if the estimated temperature of the wire reaches threshold temperature. The load circuit disconnection detector determines that there is a connection failure in the load circuit if a temperature increase calculated by a temperature calculation unit (24) is zero even a predetermined time (P1) after the semiconductor switch (Q1) is turned on.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: July 14, 2015
    Assignee: YAZAKI CORPORATION
    Inventors: Yoshinori Ikuta, Akinori Maruyama, Yoshihide Nakamura, Keisuke Ueta
  • Publication number: 20150146335
    Abstract: An overcurrent protection device satisfactorily detects overcurrent without adding complicated component or occupying large space. Penetration member penetrates board face A having a first wiring circuit and face B with a second one, transmitting heat from face A to B. Connection/disconnection part is inserted into first wiring circuit, switching current to heat generation part for generating heat with current, formed in portion of first circuit, continued with one end of penetration member. Temperature detection member disposed near or abutted against other end of penetration member on face B detects transmitted heat, outputting signal. Control part controls connection/disconnection part on signal. Heat generation part is narrower than width w1 not generating heat in steady state, having width w2 to raise temperature upon overcurrent, and being sandwiched between patterns with width w1. Control part turns off current with heat generation part temperature raised to or above prescribed threshold.
    Type: Application
    Filed: November 28, 2014
    Publication date: May 28, 2015
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Kohei ISHIDO
  • Patent number: 9042069
    Abstract: The power supply controller performs the power-supply-path protection operation to restrict power supply through the switch element if a value of temperature increase of the power supply path W with respect to the reference temperature To exceeds the temperature threshold value and remove the restriction if the temperature decreases to the temperature threshold value or lower. And the controller performs the switch protection operation to restrict the power supply through the switch element if the value of the flowing current exceeds the current threshold value and remove the restriction after the reference time H elapses. And also the controller adds the additional value F to the value of temperature increase on condition that the value of the flowing current exceeds the current threshold value in the power supply protection operation and compares a post-addition temperature to the temperature threshold value.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: May 26, 2015
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yutaka Higuchi, Seiji Takahashi
  • Publication number: 20150138682
    Abstract: A switching circuit protector switches a semiconductor device (11) provided in a switching circuit connecting a power supply (VB) to a load (RL), from a PWM drive state to a DC drive state when an estimated temperature of a cable of the switching circuit estimated by a temperature estimator (22) exceeds a threshold temperature (Tth), in the state where the semiconductor device (11) is controlled to operate in the PWM drive state to drive the load (RL). Therefore, when an overcurrent is caused in the cable, the estimated temperature exceeds the threshold temperature (Tth) so as to break the semiconductor device (11). Accordingly, the switching circuit can surely be protected by the switching circuit protector.
    Type: Application
    Filed: April 5, 2013
    Publication date: May 21, 2015
    Inventors: Keisuke Ueta, Akinori Maruyama, Yoshihide Nakamura, Yoshinori Ikuta
  • Patent number: 9030795
    Abstract: A method provides electronic overload protection having a thermal trip level. The method executes a function by a processor; provides the electronic overload protection by the function executed by the processor; and adjusts the thermal trip level by the function executed by the processor in order to mimic adjusting a physical thermal characteristic of a thermal time constant of a fixed mechanical system.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: May 12, 2015
    Assignee: Eaton Corporation
    Inventors: Robert T. Elms, Sandy O. Jimenez, Engelbert Hetzmannseder
  • Patent number: 9025293
    Abstract: In one embodiment, a power supply controller is configured to use a current to detect two different operating conditions on a single input terminal.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: May 5, 2015
    Assignee: Semiconductor Components Industries, LLC
    Inventor: Stephanie Cannenterre
  • Patent number: 9025292
    Abstract: An apparatus for protecting an electrical lead in a vehicle. The apparatus includes a temperature sensor configured to detect a temperature value of a conductor path coupled electrically to the electrical lead and a current limitation unit configured to limit a current flowing through the electrical lead when the temperature value of the conductor path exceeds a predetermined value.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: May 5, 2015
    Assignee: Lisa Dräxlmaier GmbH
    Inventor: Michael Wortberg
  • Patent number: 9019676
    Abstract: A system for protecting an electrical junction having a first pin and a second pin is provided. The system includes a first circuit protection device coupled to the first pin and configured to sense at least a first current and a second circuit protection device coupled to the second pin and configured to sense at least a second current. Each of the first circuit protection device and the second circuit protection device includes a trip mechanism configured to interrupt current flowing through a respective circuit protection device and a trip unit operatively coupled to the trip mechanism. The trip unit is configured to activate the trip mechanism based on a determination that a respective current exceeds a predetermined threshold.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: April 28, 2015
    Assignee: General Electric Company
    Inventors: Patrick D. Galbreath, Craig Lung-Pei Tsai, Almir Begovich, Gregory Michael Thomas, Jonathan D. Nelson, John Michael Todd, Robert Jules Lafleur, Brice Alan Bowley
  • Patent number: 9001484
    Abstract: Power delivery systems and methods are provided. A power delivery system (100) can include a thermal device (140) disposed at least partially within the external power delivery device (110). The thermal device can be configured to output a first signal (150) corresponding to an internal temperature of the power delivery device when the internal temperature of the power delivery device exceeds a predetermined threshold.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: April 7, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Thomas P. Sawyers, Barry N. Carroll
  • Patent number: 8996189
    Abstract: A method for optimized energy management of an electrical system is provided for protecting a component to be protected of the electrical system. The power dissipation of at least one component to be protected is determined, the expected temperature increase is calculated using a thermal model. An estimated end temperature is determined using the expected temperature increase and an ambient temperature. The estimated end temperature is compared with a predefined temperature threshold value. Consumer loads are switched on or off depending on their priority. A device for carrying out the method is provided. The device includes a power meter, calculation unit storage unit, and switching unit for switching consumer loads The electrical system to which the device is assigned includes at least one consumer load and at least one component to be protected.
    Type: Grant
    Filed: August 8, 2009
    Date of Patent: March 31, 2015
    Assignee: EADS Deutschland GmbH
    Inventor: Konrad Lentner
  • Publication number: 20150077004
    Abstract: A bleeder circuit includes a first resistor, a thermistor, a transistor, a second resistor, and a diode section. The first resistor biases the transistor into an always-on status. The second resistor prevents current from flowing through the thermistor responsive to a voltage at the positive terminal being greater than a minimum forward voltage of a load. The thermistor increases in electrical resistance, limiting the current flowing therethrough and preventing damage to the load responsive to the load short-circuiting.
    Type: Application
    Filed: July 17, 2014
    Publication date: March 19, 2015
    Applicant: LIGHTING SCIENCE GROUP CORPORATION
    Inventors: Yong Jiang, Matthew Montgomery
  • Patent number: 8971005
    Abstract: The present invention provides an over temperature protection circuit. The over temperature protection circuit includes a reference circuit and a hysteretic comparator. The reference circuit is used for generating a reference voltage and a changeable voltage. The changeable voltage is varied by temperature. The hysteretic comparator compares the reference voltage with the changeable voltage to output a power down signal.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: March 3, 2015
    Assignee: Himax Technologies Limited
    Inventor: Wei-Kai Tseng
  • Publication number: 20150049408
    Abstract: A device for protecting a user includes a first current path including a first and second conduit, and a monitoring device for detecting an imminent overload of the electric user. In an embodiment, the monitoring device includes a first temperature measurement unit, a support, an evaluation unit and a first transducer to produce an electrically conductive connection between the first and second conduits of the first current path. The first temperature measurement unit is, electrically insulated from the first transducer and includes a first temperature sensor. An additional electrically insulating material; is arranged on a first lateral surface of the support between the first transducer and the support and the first temperature sensor is arranged on the support to detect a temperature of the first transducer. The evaluating unit is configured to detect an imminent overload at the user on the basis of temperatures detected by the first temperature sensor.
    Type: Application
    Filed: April 20, 2012
    Publication date: February 19, 2015
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Wolfgang Feil, Martin Maier, Klaus Pfitzner, Bernhard Rösch
  • Publication number: 20150029629
    Abstract: A protector for an electricity supply circuit includes: a power switch for switching between connection and disconnection of the electricity supply circuit; a controller configured to output a switching command signal to the power switch in accordance with an input signal; and a current detector for detecting current flowing to the electricity supply circuit. The controller includes: a lower limit threshold determination unit configured to determine whether or not an estimated temperature of a power line has dropped below a lower limit threshold; a timer for counting the time that passes after a load has been turned off, when the load is turned off by the power switch; and a mode switching unit configured to switch the controller to a sleep mode when a predetermined time is counted by the timer and the lower limit threshold determination unit determines that the estimated temperature has dropped below the lower limit threshold.
    Type: Application
    Filed: October 14, 2014
    Publication date: January 29, 2015
    Applicant: Yazaki Corporation
    Inventors: Yoshihide NAKAMURA, Akinori MARUYAMA, Keisuke UETA
  • Publication number: 20150022929
    Abstract: An over-current protection apparatus applied to a secondary battery comprises a lead frame, an IC and a PTC device. The lead frame has a carrier portion and two end portions bending therefrom to form an accommodating space. The two end portions electrically connect to positive and negative electrodes of the secondary battery. The carrier portion comprises a plurality of blocks. The IC and PTC device are disposed on the carrier portion and received in the accommodating space and encapsulated by a cover. The PTC device comprises a first electrode and a second electrode, and the first electrode and the second electrode electrically connect to different blocks of the carrier portion.
    Type: Application
    Filed: May 19, 2014
    Publication date: January 22, 2015
    Applicant: POLYTRONICS TECHNOLOGY CORP.
    Inventors: Yi An SHA, Chun Teng TSENG, Yi Nuo CHEN
  • Patent number: 8922966
    Abstract: In one embodiment, a power supply controller is configured to use a current to detect two different operating conditions on a single input terminal.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: December 30, 2014
    Assignee: Semiconductor Components Industries, L.L.C.
    Inventor: Stephanie Conseil
  • Patent number: 8907800
    Abstract: An electronic apparatus includes: a temperature measurement section that measures a temperature of a heat generation source generating heat by consuming power or a temperature of an inner position of a casing of which the temperature changes due to the heat generation of the heat generation source; and an environmental temperature calculation section that calculates a temperature which is calculated using a predetermined relational equation that is different in accordance with a model from a difference between a first temperature measured by the temperature measurement section at a point in time when the heat generation source starts consuming a predetermined amount of power and a second temperature measured by the temperature measurement section at a point in time after the passage of a predetermined period from the start of consumption of a predetermined amount of power by the heat generation source as an environmental temperature in an environment where the casing is placed.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: December 9, 2014
    Assignee: Sony Corporation
    Inventors: Kimiyasu Namekawa, Hiroyuki Kobayashi
  • Patent number: 8896212
    Abstract: A thermal control circuit comprises a positive temperature coefficient thermistor array, a negative temperature coefficient thermistor array, and a resistor array. The positive temperature coefficient thermistor array and the resistor array are electrically connected in parallel to a first terminal of the thermal control circuitry. The negative temperature coefficient thermistor array is electrically connected to a second terminal of the thermal control circuit. The positive temperature coefficient thermistor array, a negative temperature coefficient thermistor array, and the resistor array are all connected by a negative bus to a third terminal of the thermal control circuit.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: November 25, 2014
    Assignee: MP Design Inc.
    Inventors: Alexander Kornitz, Mirek Pospisil
  • Patent number: 8860245
    Abstract: A method and system for utilization of power converters in an aircraft engine start system includes measurement of power converter operation data that is utilized with a mathematical model of the power converter thermal characteristics to calculate operation limits for subsequent start duty cycles. A warning indicator is utilized in the event the start duty cycle limits are exceeded. This invention can be extended for any More Electric Vehicle applications, which utilizes an electric engine start system.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: October 14, 2014
    Assignee: Honeywell International Inc.
    Inventors: Sunit Kumar Saxena, Venkatesan Santhirahasan, Cristian Anghel
  • Patent number: 8861164
    Abstract: In one general aspect, an apparatus can include an overcurrent protection device. The apparatus can include an overvoltage protection device coupled to the overcurrent protection device and configured to cause the overcurrent protection device to decrease a current through the overvoltage protection device after a breakdown voltage of the overvoltage protection device increases in response to heat.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: October 14, 2014
    Assignee: Fairchild Semiconductor Corporation
    Inventor: Adrian Mikolajczak
  • Publication number: 20140285938
    Abstract: An over-current protection device comprises a PTC device, first and second electrodes, a first welding metal plate and a second welding metal plate. The PTC device comprises a first conductive layer, at second conductive layer and a PTC polymeric material layer laminated therebetween. The first electrode electrically connects to the first conductive layer. The second electrode electrically connects to the second conductive layer and is separated from the first electrode. The first welding metal plate is formed on an upper surface of the device and connects to the first electrode. The second welding metal plate is formed on the upper surface or a lower surface of the device and connects to the second electrode. The first and second welding metal plates are placed at two opposite ends of the strip-like structure, and each of them has a thickness sufficient to withstand spot-welding without significant resultant damage to the PTC device.
    Type: Application
    Filed: February 21, 2014
    Publication date: September 25, 2014
    Applicant: POLYTRONICS TECHNOLOGY CORP.
    Inventors: Chun Teng Tseng, Cheng Hsiang Chen, Pin Syuan Li, Chi Jen Su
  • Patent number: 8842406
    Abstract: An over-current protection device includes a resistive device, an insulation layer, an electrode layer and at least one electrically conductive connecting member. The resistive device includes a first electrode foil, a second electrode foil and a positive temperature coefficient (PTC) material layer laminated between the electrode foils. The insulation layer is formed on the surface of the first electrode foil, and the electrode layer is formed on the surface of the insulation layer. The conductive connecting member penetrates the electrode layer, the insulation layer and the first electrode foil for electrically connecting the electrode layer and the first electrode foil. The conductive connecting member is insulated from the second electrode foil. One of the first and second electrode foils is configured to electrically connect to a protective circuit module (PCM), and the other one is configured to electrically connect to an electrode terminal of a battery to be protected.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: September 23, 2014
    Assignee: Polytronics Technology Corp.
    Inventors: Chun Teng Tseng, Yi Nuo Chen, David Shau Chew Wang
  • Publication number: 20140240885
    Abstract: A main body of an electronic part has multiple electrodes, to which multiple terminals are respectively connected. The terminals include a fuse terminal and a normal terminal, each of which extends from the main body to a printed board so that the main body is supported at a position above and separated from a board surface of the printed board. The fuse terminal has an intermediate portion between an electrode-connected portion and a land-connected portion. The intermediate portion has a cut-off portion having a smaller width than other portions of the fuse terminal, so that the cut-off portion is melted down when excess current flows in the fuse terminal. The intermediate portion extends in a direction parallel to the board surface or in a direction inclined to the board surface at an angle smaller than 90 degrees.
    Type: Application
    Filed: February 26, 2014
    Publication date: August 28, 2014
    Applicants: Murata Manufacturing Co., Ltd., DENSO CORPORATION
    Inventors: Yuuto KAMIYA, Toru ITABASHI, Ryoichi SHIRAISHI, Yuki MIKAMI, Akihiro YANAGISAWA, Shigeki NISHIYAMA
  • Patent number: 8784738
    Abstract: An electrical device for performing a particular function includes a system circuit for performing the function, and a dedicated power supply for providing power to the circuit. Both the system circuit and the power supply are hermetically sealed within a housing. The device within the housing is intended to be sterilized using high temperature, reaching a sterilization temperature. According to the invention, the device includes a thermal switch which is electrically connected between the system circuit and the power supply. With the present invention, the electrical components of a device are automatically protected from thermal damage during sterilization.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: July 22, 2014
    Assignee: Codman Neuro Sciences Sarl
    Inventors: Benito Valencia Avila, Alec Ginggen
  • Patent number: 8780517
    Abstract: Provided is a semiconductor apparatus which includes a power transistor that is placed between an input terminal and an output terminal, a temperature detection diode that has a cathode connected to the input terminal and an anode connected to the output terminal, a current amplifier that outputs a detection current generated by amplifying a backward leakage current flowing from the cathode to the anode of the temperature detection diode, a first conversion resistor that outputs an overheat detection signal generated by converting the detection current into a voltage, a gating circuit that performs gating of a control signal according to the overheat detection signal, and a driver circuit that outputs a drive signal to a control terminal of the power transistor based on an output signal of the gating circuit.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: July 15, 2014
    Assignee: Renesas Electronics Corporation
    Inventor: Ikuo Fukami
  • Publication number: 20140177118
    Abstract: A method provides electronic overload protection having a thermal trip level. The method executes a function by a processor; provides the electronic overload protection by the function executed by the processor; and adjusts the thermal trip level by the function executed by the processor in order to mimic adjusting a physical thermal characteristic of a thermal time constant of a fixed mechanical system.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 26, 2014
    Applicant: EATON CORPORATION
    Inventors: ROBERT T. ELMS, SANDY O. JIMENEZ, ENGELBERT HETZMANNSEDER
  • Publication number: 20140177119
    Abstract: An overcurrent protection device includes a fuse element and an auxiliary circuit. Power is applied from a high-voltage unit of a main circuit to the fuse element. The auxiliary circuit includes a component which heats the fuse element. An amount of electric current flowing in the fuse element when the fuse element melts is controlled by heat generated by the component.
    Type: Application
    Filed: December 23, 2013
    Publication date: June 26, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kazuhiko Ueda
  • Patent number: 8760889
    Abstract: An over-current detecting apparatus for a switching element includes a reference power source, a comparator circuit, a current converting element, a first resistor, and a second resistor. The comparator circuit includes a first input terminal that receives a voltage corresponding to a current flowing in the switching element and a second input terminal that receives a reference voltage supplied from the reference power source. The current converting element converts a voltage of a temperature detecting element (4) that detects a temperature of the switching element into a current corresponding to the voltage of the temperature detecting element. The first resistor is connected in series to a reference power supply side of the second input terminal of the comparator circuit. The second resistor is connected in series to a ground side of the second input terminal of the comparator circuit.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: June 24, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Sho Maruyama
  • Publication number: 20140154537
    Abstract: A safety device for a vehicle having a battery system with a plurality of battery cells, a method for controlling the safety device, and a system that includes the safety device and the battery system. The safety device includes an electronic unit; a first device configured to detect an insulation resistance between components of the battery system and a reference potential, which components are connected in an electrically conductive manner to at least one battery cell; a second device configured to supply and/or discharge heat to and/or from the battery cells via a heat transfer medium which circulates in at least one circular flow pattern; and at least a first cut-off valve configured to interrupt the circular flow path of the heat transfer medium and which is actuated by the electronic unit from an open position into a closed position when the detected insulation resistance is below a predetermined limit value.
    Type: Application
    Filed: November 21, 2013
    Publication date: June 5, 2014
    Applicant: MAGNA STEYR Battery Systems GmbH & Co OG
    Inventors: Peter DÄMON, Thomas TRATHNIGG
  • Publication number: 20140153150
    Abstract: An electric circuit, including an electric load operable from an operating current; an energy storage system providing the operating current at both a first mode and a second mode with the first mode having a first current in a first range of zero to a first particular current value and with the second mode having a second current in a second range of the first particular current value to a second particular current value; and an active protection coupled to the energy storage system, the active protection dynamically reconfigurable between a first mode and a second mode, the first mode applying a first overcurrent protection rating to the operating current when the operating current is operating in the first mode and the second mode applying a second overcurrent protection rating to the operating current when the operating current is operating in the second mode.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicant: TESLA MOTORS, INC.
    Inventor: Francisco LePort
  • Patent number: 8730636
    Abstract: An adaptive protection circuit module for an operational amplifier including an over temperature protection circuit and an over current protection circuit is provided. The over temperature protection circuit provides a temperature protection function to power down the operational amplifier when an operating temperature of the operational amplifier increases higher than a first threshold temperature. The over current protection circuit provides a current protection function to limit an output current of the operational amplifier and adjusts the first threshold temperature to a second threshold temperature when the over current protection circuit is enabled. The second threshold temperature is lower than the first threshold temperature. After the first threshold temperature is adjusted to the second threshold temperature, the over temperature protection circuit powers down the operational amplifier when the operating temperature increases higher than the second threshold temperature.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: May 20, 2014
    Assignee: Himax Technologies Limited
    Inventor: Wei-Kai Tseng
  • Patent number: 8730635
    Abstract: If a power supply path is in an abnormal state, a power-supply-path protection circuit of a power supply controller inhibits a switching circuit that switches on/off power supply from a power source to a load from power supply, using data related to a protection-current temperature characteristic line set by a characteristic setting circuit. The protection-current temperature characteristic line has a characteristic in which a protection current value is constant corresponding to increase in an ambient temperature or a negative characteristic in which the protection current value reduces corresponding to increase in the ambient temperature. Within a temperature range equal to or lower than an supposed maximum ambient temperature around the power-supply-path, the protection-current temperature characteristic line and a power-supply-path temperature characteristic line have a relation that the protection-current value is equal to or lower than an allowable current value at an identical ambient temperature.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: May 20, 2014
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Seiji Takahashi, Yutaka Higuchi
  • Patent number: 8693156
    Abstract: A protection apparatus for a load circuit is provided which can miniaturize electric wires and semiconductor switches by using a switch circuit simulating the current interruption time characteristics of fuses. A conductor resistance r and a heat resistance R used in each of a heat generation temperature calculation expression and a heat dissipation temperature calculation expression are respectively changed into a pseudo conductor resistance r* and a pseudo heat resistance R*, then the heat generation amount and the heat dissipation amount of the electric wire are calculated, and current temperature of the electric wire is estimated. When the estimation temperature reaches allowable temperature, an electronic switch S1 is turned off to thereby protect the load circuit. As a result, each of the electric wires and the semiconductor switches used in the load circuit can be protected from over heat.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: April 8, 2014
    Assignee: Yazaki Corporation
    Inventors: Yoshihide Nakamura, Akinori Maruyama, Keisuke Ueta
  • Publication number: 20140092512
    Abstract: A battery tester capable of measuring resistance and voltage of a battery using the same input channel. When measuring battery resistance, a testing signal circuit is electrically coupled to two electrodes of a subject battery to conduct a testing signal used in the battery resistance measurement. A response sensing circuit of the battery tester is also electrically coupled to the two electrodes of the subject battery to measure a response signal across the two electrodes of the subject battery. A resistance measuring module is electrically coupled to the response sensing circuit to measure the battery resistance based on the response signal detected by the response sensing circuit. A circuit breaker is capable of disconnecting the subject battery from the testing signal circuit, and disconnecting the resistance measuring module from the response sensing circuit. Moreover, the battery tester can also provide automatic protection for the battery resistance measuring module.
    Type: Application
    Filed: June 25, 2013
    Publication date: April 3, 2014
    Inventor: Songnan Fan
  • Publication number: 20140063671
    Abstract: A surface-mountable over-current protection device comprises a PTC material layer, first and second conductive layers, first and second electrodes, first and second electrically conductive connecting members. The PTC material layer has a resistivity less than 0.18 ?-cm. The conductive layers are in contact with opposite surfaces of the PTC material layer. The first electrode comprises a pair of first metal foils and is insulated from the second conductive layer. The second electrode comprises a pair of second metal foils and is insulated from the first conductive layer. The first electrically conductive connecting member connects to the first metal foils and conductive layer. The second electrically conductive connecting member connects to the second metal foils and conductive layer. The first electrically conductive connecting member comprises 40%-100% by area of the first lateral surface, and the second electrically conductive connecting member comprises 40%-100% by area of the second lateral surface.
    Type: Application
    Filed: May 23, 2013
    Publication date: March 6, 2014
    Applicant: POLYTRONICS TECHNOLOGY CORP.
    Inventors: Fu Hua CHU, David Shau Chew Wang, Chun Teng Tseng, Yi An Sha
  • Patent number: 8654497
    Abstract: A current limiter and related methods to protect a switched-mode power supply from inrush current. The current limiter may include a resistive element electrically interconnected in series to a thermal element. The resistive element and the thermal element may be disposed about a single, unitary core. The resistive element may be in the form of a wire wound resistor wound about the core. The thermal element may be in the form of plated portion of the core. The thermal element may act as a thermal fuse to prevent overheating and unsafe failure of the resistive element in cases where excessive current passes through the resistive element. The thermal element may be configured to trip in a safe manner without sparking or creating exposed energized conductors. Thus the current limiter may be operable to limit inrush current while providing for safe failure modes.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: February 18, 2014
    Assignee: Flextronics AP, LLC
    Inventors: Karim El Filali, Ralf Schröder gen. Berhegger
  • Patent number: 8643994
    Abstract: If a power supply path is in an abnormal state, a power-supply-path protection circuit of a power supply controller inhibits a switching circuit that switches on/off power supply from a power source to a load from power supply, using data related to a protection-current temperature characteristic line set by a characteristic setting circuit. The protection-current temperature characteristic line has a characteristic in which a protection current value is constant corresponding to increase in an ambient temperature or a negative characteristic in which the protection current value reduces corresponding to increase in the ambient temperature. Within a temperature range equal to or lower than an supposed maximum ambient temperature around the power-supply-path, the protection-current temperature characteristic line and a power-supply-path temperature characteristic line have a relation that the protection-current value is equal to or lower than an allowable current value at an identical ambient temperature.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: February 4, 2014
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Seiji Takahashi, Yutaka Higuchi
  • Patent number: 8641273
    Abstract: Faulty battery detecting and locating devices and methods are able to detect and locate a faulty battery cell. The device applies an energy to a sensing member, such as a polymeric tube containing at least two polymer-coated and twisted electric wires. Heat that is generated by a faulty battery triggers an electric communication between the two electric wires by melting at least a portion of the polymer. The resulting change in resistance between the two electric wires is used to detect and locate a faulty battery.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: February 4, 2014
    Assignee: Sinoelectric Powertrain Corporation
    Inventors: Peng Zhou, Paul Tsao, David Kevin Pariseau