EP2893365A1 - Procédé et circuit permettant de contrôler la plausibilité d'un résultat de mesure de capteur de courant - Google Patents

Procédé et circuit permettant de contrôler la plausibilité d'un résultat de mesure de capteur de courant

Info

Publication number
EP2893365A1
EP2893365A1 EP13759726.6A EP13759726A EP2893365A1 EP 2893365 A1 EP2893365 A1 EP 2893365A1 EP 13759726 A EP13759726 A EP 13759726A EP 2893365 A1 EP2893365 A1 EP 2893365A1
Authority
EP
European Patent Office
Prior art keywords
circuit
electrical
change
current
current sensor
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.)
Withdrawn
Application number
EP13759726.6A
Other languages
German (de)
English (en)
Inventor
Jörg ECKRICH
Wolfgang Jöckel
Klaus Rink
Martin Haverkamp
Torsten Martin
Jens HERCHENRÖDER
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.)
Aumovio Germany GmbH
Original Assignee
Continental Teves AG and Co OHG
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 Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Priority to EP19216038.0A priority Critical patent/EP3660531A1/fr
Publication of EP2893365A1 publication Critical patent/EP2893365A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G01R19/0092—Measuring current only
    • 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
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • 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

Definitions

  • the invention relates to a circuit for conducting an electric current between a vehicle battery and an electric vehicle connectable to the vehicle battery
  • Network component via an electrical component and a vehicle with the circuit.
  • a current sensor can be connected in series between the electrical energy source and the electrical consumers.
  • a current sensor is known for example from DE 10 2011 078 548 AI.
  • the specified method is based on the consideration that current sensors are electrically connected in series between the electrical energy source and the electrical consumers should be to the whole with the electric power too
  • the disclosed method is based on the recognition that defects in the electrical circuit in which the current sensor is implemented, or defects in the current sensor itself, such as parasitic short circuits, can lead to a portion of the electric current and thus the electric charge is passed past the current sensor and can not be detected by the current sensor, resulting in a faulty measurement with the current sensor.
  • the error-free operation of the current sensor can be ensured in the electrical.
  • the specified method comprises the step of connecting a known electrical load to the circuit for carrying out the predetermined change in the circuit state of the electrical circuit.
  • the circuit is, for example, part of a vehicle electrical system in a vehicle or is operated in a vehicle as a vehicle electrical system, these known electrical consumers, for example in the form of a heater, an air conditioner, or the like available.
  • the training is based on the consideration that not the power itself must be detected, but only its change, which is caused by the connection of the known electrical load.
  • the current sensor has at least two shunts connected in parallel, wherein for carrying out the predetermined change in the
  • the electrical circuit is in an at least quasi-stationary state before switching on the electrical load.
  • a quasi-stationary state is to be understood hereinafter a state in which the state of the electrical circuit within a predetermined
  • Time limit changes only within a predetermined range. In a steady state, the state of the electrical circuit would not change at all. In this way it can be ensured that the predetermined
  • the known power consumption of the known electrical load of operating conditions of the electrical circuit and / or the electrical load is dependent.
  • the specified method comprises the steps:
  • the measurement results obtained by the first predetermined change in the circuit state directly or indirectly with another known change in the circuit state are proposed with the development of the specified method.
  • Circuit state of the electrical circuit according to a particular embodiment of the specified method after the first predetermined change in the circuit state of the electrical circuit alternatively or in addition to this carried out .
  • Control device specified which is adapted to perform one of the specified methods.
  • the specified control device has a memory and a processor.
  • the specified method is stored in the form of a computer program in the memory and the processor is provided for carrying out the method when the computer program is loaded from the memory into the processor.
  • the invention also relates to a computer program with
  • Program code means to perform all steps of one of the specified methods when the computer program is run on a computer or one of the specified devices.
  • the invention also relates to a computer program product containing a program code which is stored on a computer-readable data carrier and which, when stored on a computer
  • Data processing device is performed, performs one of the specified methods.
  • a battery pole for delivering an electric current to an electrical consumer
  • FIG. 1 shows a schematic view of a current sensor between two line sections
  • FIG. 2 is a schematic view of a current sensor in a circuit
  • Fig. 3 is a schematic view of an alternative
  • Fig. 4 is a schematic view of a current sensor in an alternative circuit
  • Fig. 5 shows a current waveform diagram with measurement results of a current sensor.
  • the same technical elements are provided with the same reference numerals and described only once.
  • FIG. 1 shows a schematic view of a current sensor 2 between two line sections 4, 6.
  • an electric current 7 is to be detected, which flows via the current sensor 2 through the two line sections 4, 6.
  • the current sensor 2 is designed in the present embodiment as a passive shunt, which is in a manner known to those skilled in a simple electrical resistance with a predetermined resistance value.
  • the current sensor 2 can also be constructed as an active shunt, as known for example from DE 10 2011 078 548 AI, or based on a magnetic measuring principle and is in no way limited in its construction.
  • the current sensor 2 is shock side between the two line sections 4, 6, wherein at the connection points between the line sections 4, 6 and the current sensor 2 electrical measuring lines 8, 10 are electrically contacted, which are guided to an evaluation circuit 12. Between the measuring lines 8, 10 a measuring voltage 14 drops in a manner known to those skilled in the art. From the measuring voltage 14 and the known resistance value of the current sensor 2 designed as a passive shunt, the current to be detected 7 can be deduced in a manner known to the person skilled in the art.
  • the current sensor for example, from a
  • FIG. 2 shows a schematic view of the current sensor 2 in a circuit 22.
  • the current sensor 2 is connected between an electric energy source 24 designed as a battery and an electrical load 26, wherein the electrical current 7 to be detected is conducted to the current sensor 2 via a first battery pole 28 of the battery 24 and one of the two line sections 4 , The current to be detected 7 is then passed through the other of the two line sections 6 to the electrical load 26 and returns from the electrical load via a return line 30 and a second
  • the current sensor 2 is via measuring lines 8, 10 with the Evaluation circuit 12 is connected, wherein the measuring leads 8, 10, the voltage drop across the current sensor 14 14 but also other signals necessary for the measurement, such as a
  • Voltage drop 14 can be kept constant at an active shunt.
  • the evaluation circuit 12 outputs a state change signal 34, with which they have a
  • Circuit state of the circuit 22 can change.
  • Circuit state can be any influence that changes the electrical current to be detected 7.
  • Such influencing variables can be, for example, the wiring of the circuit 22 or a circuit 22 acting on the circuit
  • the state of the electric circuit 22 is changed with the state change signal 34 so that the electric current 7 to be detected changes in a known manner.
  • the measuring current 20 shown in FIG. 1 and flowing through the current sensor 2 must also change in the known manner. If it does not, part of the electric current 7 to be detected flows through a defect in the circuit 22, such as the impurity 18 as a parasitic current 16, so that the measuring current 20 is falsified.
  • Fig. 3 is intended to illustrate a first of the two examples.
  • the current sensor 2 is constructed via two parallel-connected Einzelelshunts 36, 38, wherein the second single shunt 38 over one by the
  • State change signal 34 controllable switch 40 can be removed from the parallel circuit.
  • the evaluation circuit first detects the current to be detected 7 via the measuring current 20 with both
  • FIG. 4 is intended to illustrate the second of the two examples.
  • the electrical load 26 comprises for this purpose a three-phase electric motor 42, which is supplied via an inverter 44 with electrical energy from the battery 24 in a manner known to those skilled in the art.
  • a single-phase current sensor 46 may be arranged in each phase in order to carry out measurement tasks known to the person skilled in the art, for example the detection of the magnetic stator field.
  • Inverter 44 an electric heater 48 connected via the switchable by means of the state change signal 34
  • Switch 40 can be disconnected from the parallel circuit.
  • the evaluation device 20 can connect the electric heater 48 and measure the value of the
  • Measuring current 20 has risen through the current sensor 20. This value must match the current consumption of the electric heater 48. If he does not do so, part of the current 7 to be detected flows as parasitic current 18.
  • the single-phase current sensors 46 can also be checked for error-free operation with the method presented in the present application. Reference is made to Fig. 5, which is a qualitative
  • the electric heater 48 as an additional electrical load to a start time 54th
  • Measuring current 20 and settles on a second stationary value 58 which can be measured at the earliest at a time 60 at which this settling is completed.
  • the time between these two times is usually in the range of seconds.
  • the amount 62 of the difference between the two values 58 and 56 of the measuring current 20 should correspond to the current consumption of the electric heater.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

Procédé permettant de contrôler la plausibilité du résultat d'une mesure d'un courant électrique (20) effectuée par un capteur de courant (2) intégré dans un circuit électrique (22), qui consiste à réaliser une modification prédéterminée (34) de l'état du circuit électrique (22), à détecter, à l'aide du capteur de courant (2), la modification (62) du courant électrique (20) provoquée par la modification (34) de l'état du circuit sous forme de résultat de mesure, et à contrôler la plausibilité du résultat de mesure en comparant la modification (34) de l'état du circuit et la modification (62) du courant électrique (20).
EP13759726.6A 2012-09-07 2013-09-05 Procédé et circuit permettant de contrôler la plausibilité d'un résultat de mesure de capteur de courant Withdrawn EP2893365A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19216038.0A EP3660531A1 (fr) 2012-09-07 2013-09-05 Méthode et circuit de vérification de la plausibilité du résultat de la mesure d'un capteur de courant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012215946.0A DE102012215946A1 (de) 2012-09-07 2012-09-07 Schaltung zum Leiten eines elektrischen Stromes
PCT/EP2013/068407 WO2014037465A1 (fr) 2012-09-07 2013-09-05 Procédé et circuit permettant de contrôler la plausibilité d'un résultat de mesure de capteur de courant

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP19216038.0A Division EP3660531A1 (fr) 2012-09-07 2013-09-05 Méthode et circuit de vérification de la plausibilité du résultat de la mesure d'un capteur de courant

Publications (1)

Publication Number Publication Date
EP2893365A1 true EP2893365A1 (fr) 2015-07-15

Family

ID=49150938

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19216038.0A Withdrawn EP3660531A1 (fr) 2012-09-07 2013-09-05 Méthode et circuit de vérification de la plausibilité du résultat de la mesure d'un capteur de courant
EP13759726.6A Withdrawn EP2893365A1 (fr) 2012-09-07 2013-09-05 Procédé et circuit permettant de contrôler la plausibilité d'un résultat de mesure de capteur de courant

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19216038.0A Withdrawn EP3660531A1 (fr) 2012-09-07 2013-09-05 Méthode et circuit de vérification de la plausibilité du résultat de la mesure d'un capteur de courant

Country Status (7)

Country Link
US (1) US9651586B2 (fr)
EP (2) EP3660531A1 (fr)
JP (1) JP2015529332A (fr)
KR (1) KR102110002B1 (fr)
CN (1) CN104603631B (fr)
DE (1) DE102012215946A1 (fr)
WO (1) WO2014037465A1 (fr)

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DE102014200200A1 (de) * 2014-01-09 2015-07-09 Robert Bosch Gmbh Ermittlung einer Stromstärke eines in eine oder aus einer Batterie fließenden elektrischen Stroms
DE102014208680A1 (de) * 2014-05-08 2015-11-12 Robert Bosch Gmbh Verfahren zur Überwachung von Stromsensoren
DE102015212080B4 (de) * 2015-06-29 2017-06-14 Continental Automotive Gmbh Verfahren zum Ermitteln der Abweichungen der gemessenen Stromist- von Stromsollwerten in einer Anzahl parallel geschalteter, stromgeregelter Schaltpfade
US10421367B2 (en) * 2015-10-30 2019-09-24 Faraday & Future Inc. Electric vehicle battery test
CN107861086A (zh) * 2017-12-27 2018-03-30 北京东方计量测试研究所 一种应用于空间的电流传感器在轨校准方法及装置
DE102018206804A1 (de) 2018-05-03 2019-11-07 Siemens Aktiengesellschaft Erkennung von Unterbrechungen eines Stromkreises
US11391805B2 (en) * 2019-05-10 2022-07-19 Hamilton Sundstrand Corporation Systems and methods for current sense resistor built-in-test
CN113985118B (zh) * 2021-10-29 2024-11-22 东风汽车有限公司东风日产乘用车公司 车载电流故障检测装置
DE102022001529A1 (de) 2022-05-02 2023-11-02 Mercedes-Benz Group AG Überwachungsvorrichtung zur Überwachung einer Batterie eines zumindest teilweise elektrisch betriebenen Kraftfahrzeugs sowie Verfahren
DE102023108347A1 (de) 2023-03-31 2024-10-02 Göpel electronic GmbH Vorrichtung und Verfahren zur Ausfallfrüherkennung eines magnetfeldsensitiven Stromsensors

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Also Published As

Publication number Publication date
US20150219696A1 (en) 2015-08-06
KR102110002B1 (ko) 2020-05-12
CN104603631B (zh) 2017-12-29
KR20150053273A (ko) 2015-05-15
EP3660531A1 (fr) 2020-06-03
JP2015529332A (ja) 2015-10-05
DE102012215946A1 (de) 2014-05-28
WO2014037465A1 (fr) 2014-03-13
US9651586B2 (en) 2017-05-16
CN104603631A (zh) 2015-05-06

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