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WO2002066997A1 - Dispositif, amperemetre et automobile - Google Patents

Dispositif, amperemetre et automobile Download PDF

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Publication number
WO2002066997A1
WO2002066997A1 PCT/DE2002/000229 DE0200229W WO02066997A1 WO 2002066997 A1 WO2002066997 A1 WO 2002066997A1 DE 0200229 W DE0200229 W DE 0200229W WO 02066997 A1 WO02066997 A1 WO 02066997A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
conductor
leg
horseshoe shape
sections
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.)
Ceased
Application number
PCT/DE2002/000229
Other languages
German (de)
English (en)
Inventor
Henning M. Hauenstein
Andreas Stratmann
Stephan Ernst
Wolfgang Feiler
Ning Qu
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2002066997A1 publication Critical patent/WO2002066997A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
    • G01R15/207—Constructional details independent of the type of device used

Definitions

  • Magnetic field sensors are known which can be used as current sensors, the generation of a magnetic field around a current-carrying conductor being used.
  • Hall or magnetoresistive sensors or also lateral magnetotransistors are known as magnetic field sensors.
  • the basic prerequisite for such methods is precise knowledge of the possible field distribution to be measured, in order to be able to make statements regarding the positioning and the positioning accuracy of the sensor element.
  • the measurement is made significantly more difficult in a magnetically disturbed environment and with very small currents to be detected.
  • previous solutions used flux concentrators, for example made of ferritic material and / or magnetic shielding measures.
  • such measures are expensive and complex and take up a lot of space.
  • the device according to the invention, the current meter according to the invention and the motor vehicle according to the invention with the features of the independent claims have the advantage that a sensor means senses a larger magnetic field than would be possible on a simple straight conductor at a given current strength.
  • the conductor is essentially horseshoe-shaped in a first conductor area and thus forms a first horseshoe shape
  • that the conductor is essentially horseshoe-shaped in a second conductor area and thus forms a second horseshoe shape
  • the first section being part of a first Legs of the horseshoe shape and wherein the second portion forms part of a second leg of the first horseshoe shape, the third portion forms part of a first leg of the second horseshoe shape and the fourth portion forms part of a second leg of the second horseshoe shape
  • the first Legs of the first horseshoe shape and the first leg of the second horseshoe shape are connected by a first connecting piece
  • the second leg of the first horseshoe shape and the second leg of the second horseshoe shape are connected by a second connecting piece.
  • the conductor has a first reversing piece, that the conductor has a second reversing piece, and that the conductor has a third reversing piece, the first reversing piece being attached connects the first section, the second reversing section being followed by the second section, the second reversing section following the second section, the second reversing section being followed by the third section, the third reversing section being connected to the third section, the third reversal piece of the fourth section follows, the center points of the first, second, third and fourth sections lying in a common plane perpendicular to the sections essentially forming the corner points of a rectangle and the corner point belonging to the first section forming the rectangle in the rectangle the second section of the corner point diagonally opposite.
  • a magnetic field overlay can be achieved, which leads to an even larger magnetic field, the magnetic field overlay being of the order of magnitude of four times that of the equivalent, non-curved arrangement. There is no current distribution in the conductor used.
  • Another advantage is that the conductor cross section is round. As a result, the field distribution of the magnetic field around the current-carrying conductor is only weakly dependent on the frequency of the current.
  • the sensor means is a magnetic field sensor, in particular a Hall sensor, a lateral magneto-transistor and / or a magnetoresistive resistor. This makes it possible in particular for the sensor element or sensor means to have a magnetic field sensitivity in the lateral direction, ie parallel to its surface.
  • Figure 1 shows a first embodiment of an inventive
  • FIG. 2 shows the first embodiment of the invention
  • Figure 3 shows a second embodiment of the invention
  • Figure 4 is a cross-sectional view of the conductor to the first and second embodiment
  • FIG. 5 shows another example of the construction of the invention
  • FIG. 1 a first embodiment of a conductor 1 according to the invention is shown in perspective.
  • the conductor 1 comprises a first conductor region 100 and a second conductor region 200.
  • the first conductor region 100 and the second conductor region 200 are bent in the shape of a horseshoe or a U-shape.
  • the first conductor region 100 has a first section 10 of the conductor in the region of a first leg and a second section 20 of the conductor 1 in the region of its second leg.
  • the second conductor area 200 has a third section 30 in the area of its first leg and in the area a fourth section 40 of the conductor 1 on its second leg.
  • the first leg of the first conductor region 100 and the first leg of the second conductor region 200 that is to say the first section 10 and the third section 30, are connected by means of a first connecting piece 5.
  • In the area of the first connecting piece 5 there is a first connection of the conductor 1, which is provided for the supply and discharge of the current.
  • the second leg of the first conductor area 100 and the second leg of the second conductor area 200, thus the second section 20 and the fourth section 40 are connected by means of a second connecting piece 25, again in the area of the second connecting piece 25 a further connection for the Supply or discharge of the current is provided.
  • the conductor 1 is shown in side view. It is particularly clear here that the conductor 1 is bent in a horseshoe shape in its first conductor region 100 and in its second conductor region 200.
  • the first and third sections 10, 30 as well as the second and fourth sections 20, 40 and the connecting pieces 5, 25 can again be seen.
  • FIG. 3 shows a second embodiment of the conductor 1 according to the invention.
  • the second embodiment provides that the conductor 1 has the same current strength over its entire course, ie there is no division of the current as in the first embodiment.
  • the first section 10, the second section 20, the third section 30 and the fourth section 40 are again provided, each of which in turn runs essentially parallel to one another.
  • the conductor comprises three reversing pieces, which invert the conductor by approximately 180 ° each.
  • a first reversing piece 6 adjoins the first section 10, the first reversing piece 6 being followed by the second section 20, which in turn is provided essentially parallel to the first section 10.
  • the second section 20 is followed by a second reversing piece 7, which in turn reverses the conductor by approximately 180 °.
  • the second reversing piece 7 is followed by the third section 30, which in turn is provided essentially parallel to the first section 10 and the second section 20.
  • the conductor 1 comprises, after the third section 30, a third reversing piece 8, which in turn reverses the conductor by approximately 180 °.
  • the first reversing piece 6 and the third reversing piece 8 cross each other in such a way that no electrically conductive connection is provided between the first reversing piece 6 and the third reversing piece 8.
  • the fourth section 40 of the conductor 1 is provided.
  • the geometry of the conductor 1 is provided in such a way that, if a sectional plane is considered which runs in the region of the sections 10, 20, 30, 40 perpendicular to the course of the sections 10, 20, 30, 40, the center points or the centers of the Sections 10, 20, 30, 40 form a rectangle or a square. It is then according to the above description that the centers or the centers of the first section 10 and the second section 20 are diagonally opposite with respect to the said rectangle or said square. It is also clear from the description that the orientation of the current direction in the first section 10 and in the third section 30 is the same and specifies a first current direction. Furthermore, the current direction in the second section 20 and in the fourth section 40 is the same and specifies a second current direction.
  • first current direction and the second current direction are provided in anti-parallel.
  • the statements about the current direction also apply to the first embodiment, since the current conductor is divided into the first section 10 and the third section 30 starting from the first connecting piece 5 and the current conductor is divided into the second section 20 and starting from the second connecting piece 25 the fourth section 40, so that the current direction in the first and third sections 10, 30 on the one hand and in the second and fourth sections 20, 40 on the other hand each run in parallel, but are oriented antiparallel to one another.
  • FIG. 4 shows a sectional illustration of the first embodiment of the conductor 1 in the region of the sections 10, 20, 30, 40.
  • the first current direction in the first section 10 and in the third section 30 is the same, which is represented by a cross which is attached in the first section 10 and in the third section 30 in FIG. 4 and is intended to represent that the current direction is oriented into the drawing plane in the first section 10 and in the third section 30.
  • the second section 20 and in the fourth section 40 in FIG. 4 there is a point which is intended to clarify that in the second section 20 and in the fourth section 40 the second current direction is oriented out of the plane of the drawing.
  • the current directions defined for sections 10, 20, 30, 40 generate magnetic fields which are indicated by magnetic field lines which are provided with an arrow.
  • a first magnetic field line 11 runs around the first section 10 in a clockwise direction.
  • a second magnetic field line 21 runs counterclockwise around the second section 20.
  • a third magnetic field line 31 runs around the third section 30 in a clockwise direction.
  • a fourth magnetic field line 41 runs counterclockwise around the fourth section 40.
  • sensor means 15 is provided between the first, second, third and fourth sections 10, 20, 30, 40.
  • the sensor means 15 is held by a mounting plate 50. Because the sensor means 15 is provided exactly in the center between the sections 10, 20, 30, 40, the sensor means 15 for the first embodiment measures approximately twice the magnetic field than it does with the same sensor means 15 and the same distance from the current conductor 1 in one straight conductor would be the case.
  • the sectional illustration for the second embodiment is identical to that shown in FIG. 4 except for the fact that the reference symbols for the second section 20 and the fourth section 40 (and then of course also the second and fourth magnetic field lines 21, 41) because of the crossing of the first and third connector 6, 8 must be interchanged. It then follows that the center or the center of the first section 10 in the square or rectangle mentioned in connection with FIG. 3 lies diagonally opposite the center or the center of the second section 20. Basically nothing changes in the constellation of the magnetic fields. The difference is that the magnetic field present at the location of the sensor means in the second embodiment is even about 4 times as large as in the comparable case for a straight conductor because the current in the second embodiment is not divided.
  • FIG 5 is another assembly example with respect. the first embodiment of the device according to the invention.
  • a second mounting plate 51 is provided which, together with the first mounting plate 50, the sensor means 15 exactly between two of the sections, for example positioned between the first section 10 and the second section 20 and the third section 30 and the fourth section 40.
  • webs 52 which are mounted on the mounting plates 50, 51 and the positioning of the sensor means between the first section 10 and the third section 30 or between the second section 20 and the fourth section 40 guaranteed.
  • an evaluation circuit for example in the form of an ASIC
  • a current meter according to the invention further comprises the conductor 1 in its special geometry.
  • the sensor means 15 including its assembly aids 50, 51, 52, so that only the control and signal lines for the evaluation circuit on the one hand and the feeds and discharges for the current to be measured in conductor 1 is accessible outside the housing.
  • Such a housing is provided according to the invention in particular in the form of a casting compound.
  • a casting compound comprises magnetically active material which serves to shield interference magnetic fields at the seat of the sensor means 15.
  • the cross section of the sections 10, 20, 30, 40 is particularly round, but can also be provided differently, for example oval, square, rectangular or the like.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

L'invention concerne un dispositif, un ampèremètre et une automobile. La mesure d'une intensité de courant électrique s'effectue dans un conducteur électrique (1) parcouru par du courant, avec au moins un élément de détection (15). Ledit conducteur (1) présente une première section (10), une deuxième section (20), une troisième section (30) et une quatrième section (40). Un premier sens du courant est prévu dans la première et la troisième section (10, 30), un second sens du courant étant prévu dans la deuxième et la quatrième section (20, 40). Le premier sens du courant et le second sens du courant sont prévus antiparallèles et l'élément de détection (15) est prévu entre la première, la deuxième, la troisième et la quatrième section (10, 20, 30, 40).
PCT/DE2002/000229 2001-02-20 2002-01-24 Dispositif, amperemetre et automobile Ceased WO2002066997A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001107812 DE10107812B4 (de) 2001-02-20 2001-02-20 Vorrichtung zur Messung der elektrischen Stromstärke
DE10107812.9 2001-02-20

Publications (1)

Publication Number Publication Date
WO2002066997A1 true WO2002066997A1 (fr) 2002-08-29

Family

ID=7674634

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/000229 Ceased WO2002066997A1 (fr) 2001-02-20 2002-01-24 Dispositif, amperemetre et automobile

Country Status (2)

Country Link
DE (1) DE10107812B4 (fr)
WO (1) WO2002066997A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018131324A1 (fr) * 2017-01-12 2018-07-19 日立オートモティブシステムズ株式会社 Dispositif de détection de courant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061520A1 (fr) * 1981-03-26 1982-10-06 LGZ LANDIS & GYR ZUG AG Transducteur de mesure sans noyau magnétique pour la mesure d'un courant sans contact direct
EP0233988A1 (fr) * 1986-02-10 1987-09-02 Landis & Gyr Betriebs AG Convertisseur de courant pour mesurer un courant passant dans un conducteur électrique
EP0675368A1 (fr) * 1994-03-30 1995-10-04 Landis & Gyr Technology Innovation AG Circuit d'entrée d'un appareil de mesure
DE19821492A1 (de) * 1998-05-14 1999-11-25 Daimler Chrysler Ag Verfahren zur berührungslosen Messung eines einen Leiter durchfließenden Stromes mittels eines Hallsensors sowie Hallsensoranordnung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0578948A1 (fr) * 1992-07-14 1994-01-19 Landis & Gyr Technology Innovation AG Dispositif pour mesurer des composants de puissance et/ou de courant d'une impedance
DE19946935B4 (de) * 1999-09-30 2004-02-05 Daimlerchrysler Ag Vorrichtung zur induktiven Strommessung mit mindestens einem Differenzsensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061520A1 (fr) * 1981-03-26 1982-10-06 LGZ LANDIS & GYR ZUG AG Transducteur de mesure sans noyau magnétique pour la mesure d'un courant sans contact direct
EP0233988A1 (fr) * 1986-02-10 1987-09-02 Landis & Gyr Betriebs AG Convertisseur de courant pour mesurer un courant passant dans un conducteur électrique
EP0675368A1 (fr) * 1994-03-30 1995-10-04 Landis & Gyr Technology Innovation AG Circuit d'entrée d'un appareil de mesure
DE19821492A1 (de) * 1998-05-14 1999-11-25 Daimler Chrysler Ag Verfahren zur berührungslosen Messung eines einen Leiter durchfließenden Stromes mittels eines Hallsensors sowie Hallsensoranordnung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018131324A1 (fr) * 2017-01-12 2018-07-19 日立オートモティブシステムズ株式会社 Dispositif de détection de courant
JP2018112472A (ja) * 2017-01-12 2018-07-19 日立オートモティブシステムズ株式会社 電流検出装置
US10884030B2 (en) 2017-01-12 2021-01-05 Hitachi Automotive Systems, Ltd. Current detection device

Also Published As

Publication number Publication date
DE10107812B4 (de) 2014-10-16
DE10107812A1 (de) 2002-09-19

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