DE10000500B4 - Device for measuring a current flowing in an electronic module - Google Patents
Device for measuring a current flowing in an electronic module Download PDFInfo
- Publication number
- DE10000500B4 DE10000500B4 DE2000100500 DE10000500A DE10000500B4 DE 10000500 B4 DE10000500 B4 DE 10000500B4 DE 2000100500 DE2000100500 DE 2000100500 DE 10000500 A DE10000500 A DE 10000500A DE 10000500 B4 DE10000500 B4 DE 10000500B4
- Authority
- DE
- Germany
- Prior art keywords
- strip
- current
- manganin
- sense lines
- measuring resistor
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
- H01C1/144—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals or tapping points being welded or soldered
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
Vorrichtung zur Messung eines in einem Elektronikmodul (7) fließenden Stroms mittels eines als Shunt geschalteten Präzisionsmesswiderstandes (10), der als Widerstandselement einen Streifen (12) aus Manganin aufweist, der in eine eine Stromzuleitung (13) und Stromableitung (14) sowie zwei Senseleitungen (15, 16) für den Messwiderstand (10) definierend Schaltung eingeschweißt ist, dadurch gekennzeichnet, dass die Stromzuleitung (13) und die Stromableitung (14) sowie die zwei Senseleitungen (15, 16) von einem Stanzgitter gebildet sind und dass der Manganinstreifen durch zwei Schweißnähte (18, 19) direkt auf die die Senseleitungen und die Stromzuleitung (13) und Stromableitung (14) bildenden leitenden Bahnen des Stanzgitters des Elektronikmoduls (7) geschweißt ist, wobei die Dicke und Breite des Manganinstreifens zwischen den Senseleitungen (15, 16) und der Abstand der Schweißnähte (18, 19) oder der Abstand zwischen dem durch den Manganinstreifen überbrückten Abschnitt der Senseleitungen (15, 16) direkt den Widerstandswert des Messwiderstands (10) bestimmen.Device for measuring a current flowing in an electronic module (7) by means of a precision measuring resistor (10) connected as a shunt, which has a strip (12) made of manganin as a resistance element, which leads into a current supply line (13) and current discharge line (14) and two sense lines (15, 16) for the measuring resistor (10) defining the circuit is welded in, characterized in that the current supply line (13) and the current discharge line (14) as well as the two sensor lines (15, 16) are formed by a lead frame and that the manganin strip is formed by two weld seams (18, 19) are welded directly onto the conductive tracks of the lead frame of the electronic module (7) which form the sense lines and the power supply line (13) and power lead (14), the thickness and width of the manganese strip being between the sense lines (15, 16 ) and the distance between the weld seams (18, 19) or the distance between the section of the scythe bridged by the manganin strip cables (15, 16) directly determine the resistance value of the measuring resistor (10).
Description
Die Erfindung betrifft eine Vorrichtung zur Messung eines in einem Elektronikmodul fließenden Stroms mittels eines als Shunt geschaltenen Präzisionsmesswiderstandes, der als Widerstandselement einen Streifen aus Manganin aufweist, der in eine eine Stromzuleitung und -ableitung sowie zwei Senseleitungen für den Messwiderstand definierende Schaltung eingeschweißt ist.The invention relates to a device for measuring a current flowing in an electronic module by means of a as a shunt switched precision measuring resistor, which has a strip of manganin as a resistance element, the one in a power supply and discharge line and two sense lines for the Measuring resistance-defining circuit is welded.
Zur Strommessung in einem Elektronikmodul
eines BLDC-Motors muss zur Messung des hindurchfliessenden Stroms
ein Präzisionsmesswiderstand
in Form eines Shunts eingesetzt werden, der eine Messgenauigkeit
von kleinder oder gleich 1 % besitzen muss. Dazu ist beispielsweise
aus der
Bei einem weiterhin bekannten Elektronikmodul besteht der Präzisionswiderstand aus einem lasergeschweißten Bauteil, das zwei Ableitungen für Senseleitungen und zwei Ableitungen für die stromführenden Leitungen, d.h. für die Stromzu- und -ableitung aufweist. Als Widerstandselement dieses Präzisionswiderstandes dient ein Manganinstreifen, der durch eine Laserschweißnaht an zwei die Senseleitungen sowie die Stromzu- und -ableitung definierende Winkelteile aus gestanztem Kupfer angeschweißt ist, die zusammen mit dem Manganinstreifen ein standardisiertes handelsübliches Bauteil bilden.In a still known electronics module there is precision resistance from a laser welded Component that has two derivatives for sense lines and two derivatives for the live ones Lines, i.e. For has the power supply and discharge. As a resistance element this precision resistor serves a manganin strip, which is attached by a laser weld two defining the sense lines and the power supply and discharge Angled parts made of stamped copper are welded together with the manganin strip a standardized commercial Form part.
Die
Sobald durch den Shunt, d. h. den
Messwiderstand
Bei der oben anhand der
Es ist Aufgabe der Erfindung, eine Strommessvorrichtung der gattungsgemäßen Art so zu ermöglichen, dass sie die Nachteile des bisher verwendeten Präzisionswiderstandes vermeidet, einen im Elektronikmodul fließenden Strom im Bereich von annähernd 30 – 60 A mit einer Messgenauigkeit von < 1 % messen kann, die Lebensdauer des Elektronikmoduls verlängert und gleichzeitig die Sicherheit bei der Strommessung erhöht.It is an object of the invention To enable current measuring device of the generic type that it avoids the disadvantages of the previously used precision resistor, one flowing in the electronics module Current in the range of approximately 30-60 A with a measurement accuracy of <1% can measure, extends the life of the electronic module and at the same time increases safety when measuring current.
Die obige Aufgabe wird erfindungsgemäß durch die im Anspruch 1 dazu augegebenen Merkmale gelöst.The above object is achieved by the invention solved the features given in claim 1.
Besondere Ausführungsarten der Erfindung sind in den Unteransprüchen ausgegeben.Special embodiments of the invention are in the subclaims output.
Eine bevorzugte Ausführungsform der Strommessvorrichtung sieht vor, dass die Senseleitungen im Abschnitt des Messwiderstands parallel und in rechtem Winkel zur Längsachse des sie überlappenden Manganinstreifen liegen und dass die beiden Schweißnähte durch Laserschweißen so angebracht sind, dass sie parallel und fluchtend zu den einander gegenüberliegenden parallelen Innenkanten der Senseleitungen verlaufen.A preferred embodiment of the current measuring device provides that the sensor lines in the section of the measuring resistor are parallel and at right angles to the longitudinal axis of the manganin strip overlapping them and that the two weld seams are made by laser welding so that they are parallel and aligned with the mutually opposite parallel inner edges of the sense lines run.
Auf diese Weise vermeidet die erfindungsgemäße Strommessvorrichtung zusätzliche Widerstandsschweißpunkte in unmittelbarer Nähe der Laserschweißnähte, d. h., dass die einzige elektrische und mechanische Verbindung des den Präzisionsmesswiderstand definierenden Manganinstreifens mit den Senseleitungen und der Stromzu- und -ableitung die beiden Laserschweißnähte sind. Der erfindungsgemäße aus einem einzigen Manganinstreifen bestehende Präzisionsmesswiderstand hat auch den Vorteil, dass seine Länge und auch Breite bei gleicher Dicke größer gewählt werden können, da die Abmessungen des Manganinstreifens nicht vom Hersteller festgelegt sind, wie bei dem bisher verwendeten Präzisionsmesswiderstand. Die Verlängerung und auch Verbreiterung des Manganinstreifens bei gleicher Dicke führt zu einer Temperaturerniedrigung, da die Verlustleistung in einem größeren Volumen entsteht und über eine größere Oberfläche abgeführt werden kann. Ferner kann die Realisierung des Präzisionsmesswiderstandes durch einen einzigen Manganinstreifen, d. h. ohne die beim bisherigen Präzisionsmesswiderstand vorhandenen, die Senseleitungen und die Stromzu- und -ableitung definierenden Kupferwinkel zu einer Kostenverringerung, gleiche Stückzahl pro Jahr vorausgesetzt, führen, da lediglich ein Manganinstreifen ausgestanzt und nur noch mit Leiterbahnen des Elektronikmoduls durch die beiden Laserschweißnähte verbunden werden muss.In this way, the current measuring device according to the invention avoids additional Resistance welding points close the laser welds, d. that is, the only electrical and mechanical connection of the the precision measuring resistor defining manganese strip with the sense lines and the power supply and derivation are the two laser welds. The invention from one single manganin strip also has existing precision measuring resistor the advantage that its length and width can be chosen larger with the same thickness, because the dimensions of the manganese strip are not specified by the manufacturer are, as with the previously used precision measuring resistor. The Extension and widening of the manganese strip with the same thickness also leads to a Lowering the temperature as the power loss is generated in a larger volume and over a larger surface can be removed can. Furthermore, the realization of the precision measuring resistor can be carried out by a single strip of manganine, d. H. without the previous one Precision resistor existing, the sense lines and the power supply and discharge defining copper angle at a cost reduction, same number per Year assuming lead because only a manganin strip is punched out and only with conductor tracks of the electronics module connected by the two laser welds must become.
Diese und weitere vorteilhafte Merkmale der erfindungsgemäßen Strommessvorrichtung werden in der nachstehenden Beschreibung eines bevorzugten Ausführungsbeispiels noch deutlicher, die sich auf die beiliegende Zeichnung bezieht.These and other advantageous features the current measuring device according to the invention are in the description below of a preferred embodiment even more clearly, which refers to the accompanying drawing.
Zeichnungdrawing
Ausführungsbeispielembodiment
In
Somit wird zur Herstellung der Strommessvorrichtung
gemäß der Erfindung
ein in seiner Breite und Dicke genau definierter Manganinstreifen
- – Dicke
und Breite des Manganinstreifens
12 , und - – Abstand
der Schweißnähte
18 ,19 bzw. der Kanten der die Senseleitungen15 ,16 bildenden Leiterbahnen.
- - Thickness and width of the manganese strip
12 , and - - distance of the weld seams
18 .19 or the edges of the sense lines15 .16 forming conductor tracks.
Bevorzugt werden die beiden Schweißnähte
Das Volumen und die Oberfläche des
Manganinstreifens
Die erfindungsgemäß gestaltete Strommessvorrichtung bietet die Möglichkeit, die Länge und damit auch die Breite bei gleicher Dicke des Manganinstreifens größer zu wählen als beim bisher verwendeten Präzisionsmesswiderstand. Dies führt zu einer Temperaturerniedrigung im Bereich des heißen Abschnitts desselben, da die Verlustleistung in einem größeren Volumen entsteht und über eine größere Oberfläche abgeführt werden kann. Somit ermöglicht die erfindungsgemäße Strommessvorrichtung, den im Elektronikmodul fließenden Strom, dessen Stärke im Bereich von 30 – 60 A liegt, mit hoher Messgenauigkeit von ≤ 1 % zu messen und gleichzeitig die Lebensdauer des Elektronikmoduls zu verlängern und auch die Sicherheit bei der Messung dieses Stroms zu verbessern.The current measuring device designed according to the invention offers the possibility of choosing a greater length and thus also a width for the same thickness of the manganese strip than in the precision measuring resistor previously used. This leads to a lowering of the temperature in the area of the hot section thereof, since the power loss arises in a larger volume and can be dissipated over a larger surface. The current measuring device according to the invention thus makes it possible to measure the current flowing in the electronics module, the strength of which lies in the range from 30-60 A, with a high measuring accuracy of ≤ 1%, and at the same time to measure the Le extend the life of the electronic module and also improve the safety when measuring this current.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000100500 DE10000500B4 (en) | 2000-01-08 | 2000-01-08 | Device for measuring a current flowing in an electronic module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000100500 DE10000500B4 (en) | 2000-01-08 | 2000-01-08 | Device for measuring a current flowing in an electronic module |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10000500A1 DE10000500A1 (en) | 2001-07-26 |
DE10000500B4 true DE10000500B4 (en) | 2004-09-02 |
Family
ID=7626966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2000100500 Expired - Fee Related DE10000500B4 (en) | 2000-01-08 | 2000-01-08 | Device for measuring a current flowing in an electronic module |
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DE (1) | DE10000500B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005019569A1 (en) * | 2005-04-27 | 2006-11-09 | Siemens Ag | Shunt for use in battery sensor, has two electrically connecting units as, respectively, pole clamp and cable socket, where pole clamp contains brass and is material-conclusively connected with resistance unit by braze welding |
DE102006050573A1 (en) * | 2006-10-26 | 2008-05-08 | Audi Ag | Electrical safety device for e.g. lighting unit of motor vehicle, has terminal clamp with separate parts, which are connected with electrical resistor unit, and electronic unit provided for determining battery state variables |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004040575A1 (en) * | 2004-08-21 | 2006-02-23 | Abb Patent Gmbh | Device for measuring electrical current, voltage and temperature on an electrical conductor made of rigid material |
FR2879751B1 (en) | 2004-12-20 | 2007-02-23 | Johnson Controls Tech Co | DEVICE FOR MEASURING CIRCULATING CURRENT IN A CABLE |
DE102005057117A1 (en) | 2005-11-30 | 2007-06-14 | Siemens Ag | Apparatus for detecting an electrical quantity of a rechargeable battery and method of manufacturing the same |
US8981762B2 (en) * | 2011-09-19 | 2015-03-17 | General Electric Company | Apparatus and method for improved current shunt sensing |
WO2020058487A1 (en) * | 2018-09-21 | 2020-03-26 | Continental Automotive Gmbh | Battery sensor for temperature-independent current measurement using a shunt |
DE102019114524A1 (en) * | 2019-05-29 | 2020-12-03 | Valeo Siemens Eautomotive Germany Gmbh | Arrangement with a power electronics substrate and a contact element, power electronics unit and converter |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0030186B1 (en) * | 1979-11-28 | 1983-06-01 | Enertec Societe Anonyme | Measuring shunt with induced error-voltage compensation |
DE4017992A1 (en) * | 1989-06-06 | 1991-01-24 | Toyoda Automatic Loom Works | TRANSISTOR WITH CURRENT MEASUREMENT FUNCTION |
DE4213606A1 (en) * | 1991-04-26 | 1992-10-29 | Toyoda Automatic Loom Works | Transistor with current detection property - has main transistor region on substrate also carrying separately arranged measurement regions with common base and collector connections and separate emitter regions |
DE4243349A1 (en) * | 1992-12-21 | 1994-06-30 | Heusler Isabellenhuette | Manufacture of resistors from composite material |
DE3615583C2 (en) * | 1986-05-09 | 1995-05-24 | Hella Kg Hueck & Co | Circuit arrangement |
DE4015625C2 (en) * | 1989-05-16 | 1995-08-03 | Toyoda Automatic Loom Works | Transistor with current detection function, the current detection resistor is temperature compensated |
US5652540A (en) * | 1992-10-26 | 1997-07-29 | U S Philips Corporation | Current sensing circuit having at least one sense cell |
DE19838974A1 (en) * | 1998-08-27 | 2000-03-02 | Bosch Gmbh Robert | Electrical circuit with a device for detecting a current variable |
-
2000
- 2000-01-08 DE DE2000100500 patent/DE10000500B4/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0030186B1 (en) * | 1979-11-28 | 1983-06-01 | Enertec Societe Anonyme | Measuring shunt with induced error-voltage compensation |
DE3615583C2 (en) * | 1986-05-09 | 1995-05-24 | Hella Kg Hueck & Co | Circuit arrangement |
DE4015625C2 (en) * | 1989-05-16 | 1995-08-03 | Toyoda Automatic Loom Works | Transistor with current detection function, the current detection resistor is temperature compensated |
DE4017992A1 (en) * | 1989-06-06 | 1991-01-24 | Toyoda Automatic Loom Works | TRANSISTOR WITH CURRENT MEASUREMENT FUNCTION |
DE4213606A1 (en) * | 1991-04-26 | 1992-10-29 | Toyoda Automatic Loom Works | Transistor with current detection property - has main transistor region on substrate also carrying separately arranged measurement regions with common base and collector connections and separate emitter regions |
US5652540A (en) * | 1992-10-26 | 1997-07-29 | U S Philips Corporation | Current sensing circuit having at least one sense cell |
DE4243349A1 (en) * | 1992-12-21 | 1994-06-30 | Heusler Isabellenhuette | Manufacture of resistors from composite material |
DE19838974A1 (en) * | 1998-08-27 | 2000-03-02 | Bosch Gmbh Robert | Electrical circuit with a device for detecting a current variable |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005019569A1 (en) * | 2005-04-27 | 2006-11-09 | Siemens Ag | Shunt for use in battery sensor, has two electrically connecting units as, respectively, pole clamp and cable socket, where pole clamp contains brass and is material-conclusively connected with resistance unit by braze welding |
DE102006050573A1 (en) * | 2006-10-26 | 2008-05-08 | Audi Ag | Electrical safety device for e.g. lighting unit of motor vehicle, has terminal clamp with separate parts, which are connected with electrical resistor unit, and electronic unit provided for determining battery state variables |
DE102006050573B4 (en) * | 2006-10-26 | 2017-03-09 | Audi Ag | Electrical safety device for battery-connected electrical consumers of a vehicle |
Also Published As
Publication number | Publication date |
---|---|
DE10000500A1 (en) | 2001-07-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130801 |