WO2016188873A1 - Capteur analogique pour borne de batterie - Google Patents

Capteur analogique pour borne de batterie Download PDF

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Publication number
WO2016188873A1
WO2016188873A1 PCT/EP2016/061348 EP2016061348W WO2016188873A1 WO 2016188873 A1 WO2016188873 A1 WO 2016188873A1 EP 2016061348 W EP2016061348 W EP 2016061348W WO 2016188873 A1 WO2016188873 A1 WO 2016188873A1
Authority
WO
WIPO (PCT)
Prior art keywords
shunt
sensor arrangement
current sensor
signal processing
current
Prior art date
Application number
PCT/EP2016/061348
Other languages
German (de)
English (en)
Inventor
Wolfgang Weigert
Karlheinz Warnke
Original Assignee
Continental Automotive Gmbh
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 Automotive Gmbh filed Critical Continental Automotive Gmbh
Priority to CN201690000686.7U priority Critical patent/CN209204686U/zh
Priority to KR1020177033318A priority patent/KR102055991B1/ko
Publication of WO2016188873A1 publication Critical patent/WO2016188873A1/fr

Links

Classifications

    • 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
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/364—Battery terminal connectors with integrated measuring arrangements
    • 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 current sensor arrangement according to the preamble of claim 1 and the use of the sensor arrangement in motor vehicles.
  • the current measurement in these sensors is usually done with the help of Hall sensors or by means of a high-quality
  • shunt-based battery sensors are usually relatively expensive microcontroller used.
  • the output of the current and temperature signal is digital, via LIN interface.
  • Hall sensors require a complex sensing of the magnetic field. For this it is necessary to arrange the sensors in a special way around or on the electrical conductor.
  • the output signal of these sensors is usually an analog voltage signal.
  • Today's Hall sensors usually also have a temperature signal.
  • the currently known current sensors are usually microcontroller-based sensors which detect the voltage drop across a shunt, or Hall sensors, which are arranged either in a defined position to the battery cable or in the
  • Air gap of a magnetic toroid surrounding the battery cable Air gap of a magnetic toroid surrounding the battery cable.
  • the shunt-based microcontroller-controlled battery sensors are characterized by high accuracy, whereas the hall-based sensors are significantly less accurate but less expensive.
  • the object of the invention has been found to propose a relatively inexpensive and / or relatively precise measuring Stromsen ⁇ soranix. This object is achieved by the current ⁇ sensor arrangement according to claim 1.
  • the current sensor arrangement is preferably understood to be a battery sensor or the current sensor arrangement is preferably designed as a battery sensor.
  • the signal processing device is preferably formed on a chip or formed as an integrated circuit.
  • a signal processing device is expediently understood as a signal processing circuit.
  • the signal processing device does not comprise a digital circuit part and / or a microcontroller.
  • the entire current sensor arrangement or the entire battery sensor expediently has no digital circuit part and / or no microcontroller.
  • the current sensor arrangement or the battery sensor is preferably integrated in the battery terminal.
  • the current sensor arrangement or the battery sensor is preferably designed such that it can be connected and operated in the Polish of a motor vehicle battery. This refers in particular to the housing shape and the dimensions.
  • the current sensor arrangement has at least two supply terminals, via which it is supplied with electrical energy, these two supply terminals not being connected to the shunt or the current path of the shunt.
  • the current sensor arrangement is in particular designed such that at least the signal processing device is supplied with electrical energy by means of the two supply connections.
  • the current sensor assembly is particularly preferably designed such that it can be connected to a control unit by means of the two supply terminals and is connected, which provides a defined supply voltage of at ⁇ play 5V DC voltage. Characterized in that the current sensor arrangement has supply connections and thus to a defined, in particular robust and reliable
  • Supply voltage can be connected, and not directly the supply voltage, which is the terminal voltage of the battery, no surge protection in the current sensor assembly is required.
  • the signal processing device has two detection terminals which are connected to the shunt or the current path of the shunt and by means of which the electric current through the shunt and / or the electrical voltage substantially above the shunt is detected and / or tapped, wherein these two detection terminals are connected in the signal processing device to the input of a preamplifier circuit, which is connected on the output side to an additional amplifier circuit.
  • the preamplifier circuit and / or the additional amplifier circuit are particularly preferably designed as a differential amplifier circuit and / or operational amplifier circuit.
  • the additional amplifier circuit provides the analog output signal.
  • the signal processing device detects a temperature by means of a temperature sensor element and in particular provides a temperature signal as an additional analog output signal.
  • the current sensor assembly is particularly preferably designed such that the Temperatursen ⁇ sorelement thermally conductively connected to the shunt and / or the pole terminal or relatively well thermally conductively connected. As a result, a relatively precise temperature detection or measurement is possible.
  • the temperature sensor element is expediently as
  • NTC resistor or thermistor formed NTC resistor or thermistor formed.
  • the shunt is suitably designed so that it is designed for currents of more than 1000A.
  • the current sensor arrangement is also designed and designed with regard to its signal processing device in order to be able to detect such current strengths through the shunt.
  • the signal processing device is preferably designed such that the output signal of the battery sensor is a current-proportional, ie with respect to the shunt strompro ⁇ portional, analog current signal or current-proportional with respect to the shunt voltage signal, which in particular has an output amplitude of 0.5V to 4.5V.
  • the current sensor arrangement is preferably designed such that it is closed ⁇ both the negative terminal and the positive terminal of a battery and can be operated.
  • the invention also relates to the use of the current sensor arrangement or the battery sensor in motor vehicles.
  • FIG. 1 shows a schematic and exemplary illustration of the circuit or design of the current sensor arrangement or of the battery sensor with respect to its mode of operation.
  • the shunt 1 for example, with a very low electrical resistance of approx. 100oohm, the battery sensor is electrically connected to the battery terminal 9 of a car battery and a battery lead 10, by means of which electrical consumers are connected in the car.
  • the current sensor arrangement is connected by way of example to the high-side and low-side connection or potential of the battery cable harness and closed at ⁇ .
  • the signal processing device is connected to its detection terminals 2 and 3 with the current path through the shunt substantially directly in front of and behind the shunt 1 electrically conductive.
  • the detection terminals 2 and 3 are formed with the inputs of the preamplifier circuit 4, for example, as a differential amplifier, via input resistors R, for example, used as a protective circuit connected.
  • the outputs of the preamplifier circuit 4 are the inputs of an additional amplifier circuit 5, also designed as a differential amplifier, supplied, wherein the additional amplifier circuit 5 on the output side of ⁇ the shunt 1 current-proportional analog voltage ⁇ signal 11, for example from 0.5V to 4.5V, as the output signal of the battery sensor.
  • the signal processing ⁇ device is connected by means of the two supply terminals 6 and 7 with an external electronic control unit ECU and is supplied by this stable with a supply voltage of 5V example.
  • the signal processing device furthermore has the temperature sensor element 8, which is designed as an analogue NTC resistor, "Negative Temperature Coefficient Thermistor” and provides a temperature signal as an additional output signal on the output side connected to the shunt 1 thermally conductively and arranged according to the example on a printed circuit board of the current sensor arrangement
  • the additional amplifier circuit 5 is a reference signal 13 supplied, which corresponds to the supply voltage according to example, so that in the case that applied to the additional amplifier circuit 5, a differential voltage of about 0V, the reference voltage out- is given and thus the measurement signal is not OV.
  • ⁇ game in accordance with the temperature sensor element 8 detects when a ⁇ switch the current sensor array is substantially the temperature of the battery terminal 9 and the course of the heating of the shunt 1 substantially its temperature, whereby the temperature of the shunt is detected 1 in operation substantially.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

Dispositif capteur de courant, destiné à être fixé sur une borne de batterie ou intégré dans ladite borne de batterie, ledit dispositif capteur comportant un shunt et un dispositif de traitement de signaux qui est conçu et connecté de manière telle qu'il détecte le courant électrique passant dans le shunt et/ou la tension électrique chutant sensiblement dans le shunt. Selon l'invention, le dispositif de traitement de signaux est conçu sous forme de circuit analogique et fournit un signal de sortie analogique qui est fonction du courant détecté et/ou de la tension détectée.
PCT/EP2016/061348 2015-05-22 2016-05-19 Capteur analogique pour borne de batterie WO2016188873A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201690000686.7U CN209204686U (zh) 2015-05-22 2016-05-19 电流传感器装置
KR1020177033318A KR102055991B1 (ko) 2015-05-22 2016-05-19 아날로그 배터리 단자 센서

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015006481 2015-05-22
DE102015006481.9 2015-05-22

Publications (1)

Publication Number Publication Date
WO2016188873A1 true WO2016188873A1 (fr) 2016-12-01

Family

ID=56068893

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/061348 WO2016188873A1 (fr) 2015-05-22 2016-05-19 Capteur analogique pour borne de batterie

Country Status (4)

Country Link
KR (1) KR102055991B1 (fr)
CN (1) CN209204686U (fr)
DE (1) DE102016208678A1 (fr)
WO (1) WO2016188873A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004007851A1 (de) * 2004-02-17 2005-09-08 Kromberg & Schubert Gmbh & Co. Kg Intelligente Anschlussvorrichtung
US20110050260A1 (en) * 2009-08-31 2011-03-03 Denso Corporation Electric current measuring device with improved installability
US20110199091A1 (en) * 2010-02-12 2011-08-18 Denso Corporation Current sensor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110089931A1 (en) * 2009-10-19 2011-04-21 Nemic-Lambda Ltd. Temperature-compensated shunt current measurement
JP2011106891A (ja) * 2009-11-14 2011-06-02 Mitsubishi Materials Corp 電流センサ装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004007851A1 (de) * 2004-02-17 2005-09-08 Kromberg & Schubert Gmbh & Co. Kg Intelligente Anschlussvorrichtung
US20110050260A1 (en) * 2009-08-31 2011-03-03 Denso Corporation Electric current measuring device with improved installability
US20110199091A1 (en) * 2010-02-12 2011-08-18 Denso Corporation Current sensor

Also Published As

Publication number Publication date
DE102016208678A1 (de) 2016-11-24
CN209204686U (zh) 2019-08-06
KR102055991B1 (ko) 2019-12-13
KR20170139088A (ko) 2017-12-18

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