FR2983300B1 - SYSTEM FOR MEASURING CHARGE CURRENT AND DIAGNOSIS OF ABSENCE OF LOAD OR OVERLOAD - Google Patents

SYSTEM FOR MEASURING CHARGE CURRENT AND DIAGNOSIS OF ABSENCE OF LOAD OR OVERLOAD

Info

Publication number
FR2983300B1
FR2983300B1 FR1103646A FR1103646A FR2983300B1 FR 2983300 B1 FR2983300 B1 FR 2983300B1 FR 1103646 A FR1103646 A FR 1103646A FR 1103646 A FR1103646 A FR 1103646A FR 2983300 B1 FR2983300 B1 FR 2983300B1
Authority
FR
France
Prior art keywords
resistor
load
overload
absence
diagnosis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
FR1103646A
Other languages
French (fr)
Other versions
FR2983300A1 (en
Inventor
Patrick Klein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Comfort and Driving Assistance SAS
Original Assignee
Valeo Etudes Electroniques SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Etudes Electroniques SAS filed Critical Valeo Etudes Electroniques SAS
Priority to FR1103646A priority Critical patent/FR2983300B1/en
Priority to EP12809639.3A priority patent/EP2786158A1/en
Priority to CN201280058687.3A priority patent/CN103959074A/en
Priority to CN201811201562.7A priority patent/CN109683012B/en
Priority to PCT/EP2012/074138 priority patent/WO2013079686A1/en
Publication of FR2983300A1 publication Critical patent/FR2983300A1/en
Application granted granted Critical
Publication of FR2983300B1 publication Critical patent/FR2983300B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/08—Circuits for altering the measuring range
    • G01R15/09—Autoranging circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16504—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed
    • G01R19/16519—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed using FET's
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
    • H03K17/0822—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in field-effect transistor switches
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
    • G01R1/203—Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/0027—Measuring means of, e.g. currents through or voltages across the switch

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Electronic Switches (AREA)

Abstract

The present invention relates to a system for measuring a load current and for diagnosing an absence of load or an overload, comprising an intelligent power switch (1) able to deliver a measurement (Is) of the load current on a current output, means for converting the measured load current into a voltage value (Vs) and a microcontroller (2) able to deliver orders to said intelligent power switch which are dependent on said voltage value (Vs). In accordance with the invention, the means for conversion comprise a first resistor (3) and a second resistor (4) which are connected in series between said current output and a reference potential, and the system furthermore comprises a control circuit (5, 6) able to compare the voltage tapped off across the terminals of said first resistor (3) and second resistor (4) connected in series with a predetermined threshold value (Vt) and to automatically short-circuit the first (3) or the second (4) resistor when the voltage tapped off is greater than said threshold value (Vt).
FR1103646A 2011-11-30 2011-11-30 SYSTEM FOR MEASURING CHARGE CURRENT AND DIAGNOSIS OF ABSENCE OF LOAD OR OVERLOAD Active FR2983300B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR1103646A FR2983300B1 (en) 2011-11-30 2011-11-30 SYSTEM FOR MEASURING CHARGE CURRENT AND DIAGNOSIS OF ABSENCE OF LOAD OR OVERLOAD
EP12809639.3A EP2786158A1 (en) 2011-11-30 2012-11-30 System for measuring a load current and for diagnosing an absence of load or an overload
CN201280058687.3A CN103959074A (en) 2011-11-30 2012-11-30 System for measuring a load current and for diagnosing an absence of load or an overload
CN201811201562.7A CN109683012B (en) 2011-11-30 2012-11-30 System for measuring load current and for diagnosing no-load or overload
PCT/EP2012/074138 WO2013079686A1 (en) 2011-11-30 2012-11-30 System for measuring a load current and for diagnosing an absence of load or an overload

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1103646A FR2983300B1 (en) 2011-11-30 2011-11-30 SYSTEM FOR MEASURING CHARGE CURRENT AND DIAGNOSIS OF ABSENCE OF LOAD OR OVERLOAD

Publications (2)

Publication Number Publication Date
FR2983300A1 FR2983300A1 (en) 2013-05-31
FR2983300B1 true FR2983300B1 (en) 2014-01-10

Family

ID=47501093

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1103646A Active FR2983300B1 (en) 2011-11-30 2011-11-30 SYSTEM FOR MEASURING CHARGE CURRENT AND DIAGNOSIS OF ABSENCE OF LOAD OR OVERLOAD

Country Status (4)

Country Link
EP (1) EP2786158A1 (en)
CN (2) CN109683012B (en)
FR (1) FR2983300B1 (en)
WO (1) WO2013079686A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104459263A (en) * 2014-12-05 2015-03-25 深圳市创荣发电子有限公司 Pointer ampere meter capable of automatically shifting gears
KR101725671B1 (en) * 2015-01-12 2017-04-11 주식회사 엘지화학 Overvoltage protection circuit, controlling method of the same and battery pack
CN105242190B (en) * 2015-10-19 2018-11-27 矽力杰半导体技术(杭州)有限公司 Current detection circuit
KR102511224B1 (en) * 2015-11-05 2023-03-17 삼성전자주식회사 Fuel Gauge System for Measuring Amount of Current of Battery and Portable Electronic Device Including the Same
DE102016101352A1 (en) * 2016-01-26 2017-07-27 Bag Electronics Gmbh Arrangement and method for operating a light bulb
DE102016220030A1 (en) * 2016-10-14 2018-04-19 Robert Bosch Gmbh Method for detecting a short circuit via a load
CN110174545A (en) * 2019-04-30 2019-08-27 上海芯导电子科技有限公司 A kind of multiplexing current detection circuit
GB2614280B (en) * 2021-12-23 2024-06-05 Synaptec Ltd Signal conditioning stage
CN117368798A (en) * 2023-12-04 2024-01-09 浙江国利信安科技有限公司 Fault detection circuit and related circuitry

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5563541A (en) * 1994-05-19 1996-10-08 Sony/Tektronix Corporation Load current detection circuit
US5631794A (en) * 1994-10-03 1997-05-20 Yang; Tai-Her Differential shunt-type protection circuit
JP2000253570A (en) * 1999-02-26 2000-09-14 Yazaki Corp Control system for motor electromotive force in electric vehicles
JP2002040059A (en) * 2000-07-24 2002-02-06 Sony Corp Current detector and control method thereof
DE10351873B4 (en) * 2003-11-06 2012-07-26 Pilz Gmbh & Co. Kg Device and method for fail-safe switching off an inductive load
JP4158754B2 (en) * 2004-09-30 2008-10-01 日産自動車株式会社 Overcurrent detection method and detection circuit
US7276893B2 (en) * 2005-02-28 2007-10-02 Keithley Instruments, Inc. Automatic ranging current shunt
US7365559B2 (en) * 2005-05-03 2008-04-29 Potentia Semiconductor Inc. Current sensing for power MOSFETs
GB2428301B (en) * 2005-07-13 2008-02-13 A D Developments Ltd Current measurement apparatus

Also Published As

Publication number Publication date
CN109683012A (en) 2019-04-26
WO2013079686A1 (en) 2013-06-06
CN103959074A (en) 2014-07-30
EP2786158A1 (en) 2014-10-08
FR2983300A1 (en) 2013-05-31
CN109683012B (en) 2022-03-22

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