WO2023135977A1 - Dispositif de détection de courant et son procédé de fabrication - Google Patents

Dispositif de détection de courant et son procédé de fabrication Download PDF

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Publication number
WO2023135977A1
WO2023135977A1 PCT/JP2022/044825 JP2022044825W WO2023135977A1 WO 2023135977 A1 WO2023135977 A1 WO 2023135977A1 JP 2022044825 W JP2022044825 W JP 2022044825W WO 2023135977 A1 WO2023135977 A1 WO 2023135977A1
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WIPO (PCT)
Prior art keywords
pairs
pair
shunt resistor
resistor
contacts
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PCT/JP2022/044825
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English (en)
Japanese (ja)
Inventor
一裕 原
裕 小澤
正樹 北川
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Koa株式会社
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Publication of WO2023135977A1 publication Critical patent/WO2023135977A1/fr

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    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C13/00—Resistors not provided for elsewhere

Definitions

  • the present invention relates to a current detection device and its manufacturing method, and more particularly to a current detection device having a shunt resistor and a current detection device manufacturing method.
  • Shunt resistors are widely used for current sensing applications.
  • a shunt resistor is required to have a temperature coefficient of resistance (TCR) as close to zero as possible in order to enable current detection that is less affected by temperature fluctuations.
  • the temperature coefficient of resistance (TCR) is an index that indicates the rate of change in resistance due to temperature change. As the temperature coefficient of resistance (TCR) approaches zero, the change in resistance decreases.
  • a low TCR alloy such as Manganin®, is sometimes used as the resistor material.
  • a current detection device equipped with a shunt resistor is used in various applications such as inverter devices, converter devices, electric vehicle battery monitoring BMS (Battery Management System), and power grid energy storage device BSS (Battery Storage System).
  • inverter devices converter devices
  • electric vehicle battery monitoring BMS Battery Management System
  • power grid energy storage device BSS Battery Storage System
  • initial measurement accuracy shipment adjustment accuracy
  • measurement accuracy for temperature fluctuations measurement accuracy for aging
  • measurement accuracy for aging are more important than other applications.
  • the current sensing device influences the battery capacity design required for the overall system and drives the system cost. Therefore, the current detection device is required to have high measurement accuracy over a wide range of current.
  • the current detection board detects current by measuring the voltage drop at the voltage measurement position of the shunt resistor.
  • the voltage measurement positions of the shunt resistor are theoretically determined by simulation.
  • shunt resistors have slight differences in their dimensions, slight differences in material composition, and differences in mounting position of the current detection substrate. Such discrepancies cause discrepancies between the theoretical voltage measurement position and the actual optimum position, resulting in reduced current measurement accuracy.
  • the present invention provides a current detection device capable of bringing the actual temperature coefficient of resistance (TCR) close to 0 and improving the accuracy of current measurement.
  • it comprises a shunt resistor having a resistor and a pair of electrodes connected to both sides of the resistor, and a current detection unit electrically connected to the shunt resistor, wherein the current detection unit includes the a plurality of pairs of voltage detection contacts electrically connected to a pair of electrodes; a plurality of pairs of voltage signal wirings respectively connected to the plurality of pairs of voltage detection contacts; and a plurality of pairs of voltage signal wirings respectively connected to the plurality of pairs of voltage detection contacts.
  • a current sensing device is provided that has been preselected based on actual measurements of the temperature coefficient of resistance of the resistor.
  • the preselected pair of conductive element connection terminals are electrically connected to a pair of voltage detection contacts in which the temperature coefficient of resistance of the shunt resistor is closest to 0 among the plurality of pairs of voltage detection contacts. It is In one aspect, the plurality of pairs of voltage sensing contacts are arranged along opposite sides of the resistor. In one aspect, the current detector includes a base plate and a plurality of pairs of through holes extending through the base plate, and the plurality of pairs of through holes are provided on the plurality of pairs of voltage signal wirings. and located between the plurality of pairs of voltage sensing contacts and the plurality of pairs of conductive element connecting terminals.
  • the plurality of pairs of conductive element connecting terminals are arranged on the front side of the base plate, and the plurality of pairs of voltage detection contacts are arranged on the back side of the base plate.
  • the plurality of pairs of voltage sensing contacts comprise a pair of contact pads surface-connected to the pair of electrodes.
  • the pair of contact pads are positioned adjacent opposite sides of the resistor of the shunt resistor, and the pairs of voltage signal wires are connected to inner edges of the pair of contact pads. ing.
  • the shunt resistor has a projection projecting in its width direction, a part of the resistor and a part of the pair of electrodes constitute the projection, and the pair of A contact pad is surface-connected to a portion of the pair of electrodes forming the protrusion.
  • the pair of conductive elements is a pair of resistors.
  • a shunt resistor and a current sensing portion are manufactured, the shunt resistor having a resistor and a pair of electrodes connected to opposite sides of the resistor, the current sensing portion comprising a plurality of pairs of electrodes.
  • a method for manufacturing a current detection device in which a pair of conductor elements are attached to element connection terminals.
  • mounting the pair of conductive elements is electrically connected to a pair of voltage sensing contacts in which the temperature coefficient of resistance of the shunt resistor is closest to 0 among the plurality of pairs of voltage sensing contacts. It is to attach a pair of conductor elements to a pair of conductor element connection terminals.
  • the conductor is connected to the conductor element connection terminal corresponding to the voltage detection contact whose temperature coefficient of resistance of the shunt resistor is closest to zero. element can be attached.
  • a current detection device with excellent temperature characteristics and high measurement accuracy is provided. can be done.
  • FIG. 1 is a plan view schematically showing one embodiment of a shunt resistor
  • FIG. 2 is a perspective view of the shunt resistor shown in FIG. 1
  • FIG. FIG. 2 is a perspective view showing an embodiment of a current detection device including the shunt resistor shown in FIG. 1 and a current detection section arranged on the shunt resistor
  • FIG. 4 is a plan view of the current detection device shown in FIG. 3
  • FIG. 4 is a plan view showing one embodiment of a current detection section electrically connected to a shunt resistor
  • FIG. 6 is a cross-sectional view taken along line AA of FIG. 5
  • 7 is a graph showing simulation results of the rate of change in resistance value of a shunt resistor due to temperature changes.
  • FIG. 4 is a flow chart for explaining an embodiment of a method for manufacturing a current detection device;
  • FIG. 4 is a perspective view showing another embodiment of a shunt resistor that constitutes a current detection device;
  • FIG. 10 is a plan view showing one embodiment of a current detection section electrically connected to the shunt resistor shown in FIG. 9;
  • 11 is a perspective view showing a current detection device in which the current detection unit shown in FIG. 10 is connected to the shunt resistor shown in FIG. 9;
  • FIG. FIG. 11 is a perspective view showing still another embodiment of a shunt resistor that constitutes a current detection device;
  • 13 is a perspective view showing a current detection device in which the current detection unit shown in FIG. 10 is connected to the shunt resistor shown in FIG. 12;
  • FIG. 12 is a flow chart for explaining an embodiment of a method for manufacturing a current detection device;
  • FIG. 4 is a perspective view showing another embodiment of a shunt resistor that constitutes a
  • FIG. 1 is a plan view schematically showing one embodiment of the shunt resistor
  • FIG. 2 is a perspective view of the shunt resistor shown in FIG.
  • the shunt resistor 1 includes a resistor 5 having a predetermined thickness and width, and a pair of electrodes 6 made of highly conductive metal connected to both sides 5a and 5b of the resistor 5.
  • the electrode 6 is connected to one side 5 a of the resistor 5
  • the electrode 7 is connected to the other side 5 b of the resistor 5 .
  • the configuration of the electrode 7 is the same as that of the electrode 6 , and the electrodes 6 and 7 are arranged symmetrically with respect to the resistor 5 .
  • Examples of materials for the resistor 5 include alloys such as copper-nickel alloys, copper-manganese alloys, iron-chromium alloys, and nickel-chromium alloys.
  • An example of a highly conductive metal forming the electrodes 6 and 7 is copper (Cu). Both sides 5a and 5b of the resistor 5 are connected (bonded) to electrodes 6 and 7 by welding (for example, electron beam welding, laser beam welding, or brazing).
  • the resistor 5 is thinner than the electrodes 6 and 7, and the front surface of the resistor 5 is lower than the front surfaces of the electrodes 6 and 7.
  • the thickness of the resistor 5 may be the same as the thickness of the electrodes 6,7.
  • the shunt resistor 1 has a projecting portion 11 projecting in its width direction. More specifically, a portion of the resistor 5 and a portion of the pair of electrodes 6 and 7 form a projecting portion 11 .
  • the projecting portion 11 has a rectangular shape when viewed from above.
  • FIG. 3 is a perspective view showing an embodiment of a current detection device comprising the shunt resistor 1 shown in FIG. 1 and a current detection section 2 arranged on the shunt resistor 1, and FIG. 3 is a plan view of the current detection device shown in FIG. A part of the pair of electrodes 6 and 7 forming the projecting portion 11 is electrically connected to the current detecting portion 2 as described later.
  • the current detector 2 has a base plate 3 on which an amplifier 31, an arithmetic device 33, and the like are arranged. This base plate 3 is fixed to the electrodes 6 and 7 of the shunt resistor 1 .
  • FIG. 5 is a plan view showing an embodiment of the current detector 2 electrically connected to the shunt resistor 1.
  • the current detection unit 2 includes a plurality of pairs of voltage detection contacts 8A to 8H, a plurality of pairs of voltage signal wirings 9A to 9H respectively connected to the plurality of pairs of voltage detection contacts 8A to 8H, and a plurality of A plurality of pairs of conductor element connection terminals 15A to 15H respectively connected to the pairs of voltage signal wirings 9A to 9H and a pair of conductor element connection terminals among the plurality of pairs of conductor element connection terminals 15A to 15H.
  • Conductive elements 20, 21 are provided.
  • the voltage detection contacts 8A to 8H, voltage signal wirings 9A to 9H, and conductor element connection terminals 15A to 15H are arranged on the base plate 3.
  • Examples of the material of the base plate 3 include resin such as glass epoxy.
  • a plurality of pairs of voltage sensing contacts 8A-8H are electrically connected to a pair of electrodes 6, 7 of the shunt resistor 1 when the base plate 3 is fixed to the shunt resistor 1. As shown in FIG.
  • a plurality of pairs of voltage detection contacts 8A to 8H are arranged along both sides 5a and 5b of the resistor 5 of the shunt resistor 1. Therefore, the distances from the end surfaces 6a, 7a of the electrodes 6, 7 to the plurality of pairs of voltage detection contacts 8A-8H are different. Although four pairs of voltage sensing contacts 8A-8H are provided in this embodiment, five or more pairs of voltage sensing contacts may be provided. Alternatively, 2-3 pairs of voltage sensing contacts may be provided.
  • the plurality of pairs of voltage detection contacts 8A-8H are composed of a pair of contact pads 25, 26 surface-connected to a pair of electrodes 6, 7. More specifically, the pair of contact pads 25 and 26 are connected to part of the electrodes 6 and 7 forming the projecting portion 11, and the plurality of pairs of voltage detection contacts 8A to 8H are connected to the contact pads 25 and 26. It consists of each part. Therefore, the plurality of pairs of voltage detection contacts 8A-8H are electrically connected to part of the electrodes 6, 7 forming the projecting portion 11. As shown in FIG. In one embodiment, contact pads 25, 26 may not be provided and multiple pairs of voltage sensing contacts 8A-8H may be separately connected to pairs of electrodes 6,7. In this embodiment, the pair of contact pads 25, 26 are surface-connected to the pair of electrodes 6, 7 by means of soldering or the like.
  • the multiple pairs of voltage detection contacts 8A to 8H are electrically connected to a part of the electrodes 6 and 7 forming the projecting portion 11.
  • the shunt resistor 1 has a projecting portion 11 composed of a part of the resistor 5 and a part of the electrodes 6 and 7, so that the potential of the electrodes 6 and 7 of the projecting portion 11 changes even if the temperature changes. It is known from simulation results and actual measurement results that the temperature coefficient of resistance of the shunt resistor 1 approaches zero when a voltage is detected at a position where there is no resistance.
  • the current detector 2 has a plurality of pairs of through holes 30A-30H extending through the base plate 3. These through holes 30A-30H are provided on the voltage signal wirings 9A-9H, respectively, and located between the voltage detection contacts 8A-8H and the conductor element connection terminals 15A-15H. One ends of the voltage signal wirings 9A-9H are connected to the voltage detection contacts 8A-8H, respectively, and the other ends of the voltage signal wirings 9A-9H are connected to the conductive element connecting terminals 15A-15H, respectively.
  • the voltage detection contacts 8A to 8H are arranged on the back side of the base plate 3, and the conductor element connection terminals 15A to 15H are arranged on the front side of the base plate 3.
  • the through holes 30A-30H extend from the back side to the front side of the base plate 3, and the voltage signal wirings 9A-9H extend from the back side to the front side of the base plate 3 via the through holes 30A-30H.
  • FIG. 6 is a cross-sectional view along line AA in FIG.
  • the through holes 30C and 30D extend from the back side to the front side of the base plate 3, and the voltage signal wirings 9C and 9D are connected from the voltage detection contacts 8C and 8D on the back side of the base plate 3. It extends to the front side of the base plate 3 via the through holes 30C and 30D.
  • the front surface of the resistor 5 of the shunt resistor 1 is positioned lower than the front surfaces of the electrodes 6 and 7, and the resistor 5 has through holes 30C and 30D and voltage signal wirings 9C and 9D. do not come into contact with
  • the arrangement of voltage detection contacts 8A-8B, 8E-8H, voltage signal wirings 9A-9B, 9E-9H, and through holes 30A-30B, 30E-30H are the same.
  • the current detection unit 2 includes an amplifier 31 that amplifies the voltage signal extracted through the voltage signal wirings 9A to 9H, an A/D converter 32 that converts the amplified voltage signal into a digital signal, and a digital signal. Further provided is an arithmetic device 33 (for example, a small computer) for receiving and calculating a current value, and a connector 34 for outputting the current value from the current detector 2 .
  • the current detector 2 may further include a temperature sensor or the like.
  • a plurality of pairs of conductor element connection terminals 15A to 15H are connected to an amplifier 31 through a pair of wirings 35,36.
  • One ends of the conductor element connection terminals 15A to 15H are connected to the corresponding voltage signal wirings 9A to 9H, respectively, and the other ends of the conductor element connection terminals 15A to 15H are connected to the wirings 35 and 36.
  • a capacitor 37 is arranged between the wirings 35 and 36 .
  • Each pair of the conductor element connection terminals 15A to 15H is composed of two electrically separated terminals, and when the conductor elements 20 and 21 are attached to any pair of the conductor element connection terminals, the conductors of the pair are connected. An electrical connection is established between the element connection terminals.
  • the conductive elements 20, 21 are attached to the conductive element connection terminals 15E, 15F to establish the electrical connection of the conductive element connection terminals 15E, 15F.
  • the pair of voltage detection contacts 8E, 8F are connected to an amplifier 31 that amplifies the voltage signal between the pair of voltage detection contacts 8E, 8F, and the amplifier 31 is an A/D converter that converts the amplified voltage signal into a digital signal.
  • the A/D converter 32 is connected to an arithmetic device 33 for calculating a current value from the digital signal, and the arithmetic device 33 is connected to a connector 34 for outputting the current value from the current detector 2 .
  • the current value can be output from the current detection unit 2 .
  • the shunt resistor 1 or its ambient temperature may be measured by a temperature sensor, and the arithmetic unit 33 may calculate the current value after correction.
  • Examples of the conductor elements 20 and 21 include a resistor having a resistance value higher than 0 (for example, 10 ⁇ ) and a jumper resistor having a resistance value of substantially 0.
  • the pair of conductor elements 20 and 21 are attached to a pair of conductor element connection terminals 15E and 15F selected in advance based on the actual measurement result of the temperature coefficient of resistance of the shunt resistor 1. More specifically, the preselected pair of conductive element connection terminals 15E and 15F is the pair of voltage detection contacts 8A to 8H whose temperature coefficient of resistance (TCR) of the shunt resistor 1 is closest to 0. are electrically connected to the voltage detection contacts 8E and 8F of the .
  • the temperature coefficient of resistance (TCR) of the shunt resistor 1 being closest to zero also includes the temperature coefficient of resistance (TCR) of the shunt resistor 1 being zero.
  • FIG. 7 is a graph showing simulation results of the rate of change in the resistance value of the shunt resistor 1 due to temperature changes.
  • the vertical axis represents the change rate of the resistance value of the shunt resistor 1 and the horizontal axis represents the temperature of the shunt resistor 1 .
  • the slope of the rate of change of the resistance value ie the temperature coefficient of resistance (TCR)
  • TCR temperature coefficient of resistance
  • the shunt resistor 1 is required to have a constant resistance value regardless of changes in temperature, that is, to have a temperature coefficient of resistance (TCR) as close to zero as possible.
  • the temperature coefficient of resistance (TCR) of the shunt resistor 1 at the voltage detection contacts 8E and 8F is closest to 0. Accordingly, when the conductive elements 20, 21 are attached to the conductive element connection terminals 15E, 15F electrically connected to the voltage detection contacts 8E, 8F, it is expected that a good temperature coefficient of resistance (TCR) can be achieved.
  • shunt resistors can have slight differences in dimensions, slight differences in material composition, and differences in the mounting position of the current detection unit 2 . Such a difference causes a difference between the theoretical voltage measurement position obtained from the simulation results and the actual optimum position.
  • the rate of change in the resistance value of the shunt resistor 1 due to temperature changes that is, the temperature coefficient of resistance (TCR) is actually measured. to determine the voltage detection contact whose temperature coefficient of resistance is closest to 0, that is, the conductive element connecting terminal to which the conductive elements 20 and 21 should be attached.
  • the temperature coefficient of resistance (TCR) is measured after the shunt resistor 1 and the current detector 2 are electrically connected.
  • the temperature coefficient of resistance of the shunt resistor 1 at the voltage detection contacts 8E and 8F where the best temperature coefficient of resistance was obtained is measured.
  • the sense wires (not shown) of the ohmmeter are electrically connected to the through holes 30E, 30F or the conductor element connection terminals 15E, 15F by a pin board or the like, and the electrodes 6, 7 of the shunt resistor 1 A probe or the like is used to connect the force line (not shown) of the ohmmeter.
  • the temperature of the shunt resistor 1 is set to a reference temperature (for example, 25° C.), and the resistance value is measured with an ohmmeter.
  • the temperature of the shunt resistor 1 is set to the test temperature (for example, 150° C.) and the resistance value is measured with an ohmmeter. Calculate the temperature coefficient of resistance from the reference temperature, the test temperature, and the resistance value at each temperature.
  • the mounting positions of the conductor elements 20 and 21 are determined to the conductor element connection terminals 15E and 15F. If the measured result of the temperature coefficient of resistance is significantly different from the simulation result, measure the temperature coefficient of resistance of the other voltage detection contacts in the same manner in turn. Then, the conductive element connecting terminal connected to the voltage detection contact that has the best (that is, closest to 0) temperature coefficient of resistance is determined as the mounting position of the conductive elements 20 and 21 .
  • the current detection unit 2 is angularly displaced with respect to the shunt resistor 1.
  • the conductor element 20 may be attached to the conductor element connection terminal 15E and the other conductor element 21 may be attached to the conductor element connection terminal 15D or 15H.
  • FIG. 8 is a flow chart for explaining an embodiment of the method for manufacturing the current detection device described above.
  • the shunt resistor 1 and the current detector 2 are manufactured.
  • the shunt resistor 1 has a resistor 5 and a pair of electrodes 6, 7 connected to opposite sides 5a, 5b of the resistor 5.
  • the current detection unit 2 includes a plurality of pairs of voltage detection contacts 8A to 8H, a plurality of pairs of voltage signal wirings 9A to 9H respectively connected to the plurality of pairs of voltage detection contacts 8A to 8H, and a plurality of pairs of voltage signal wirings 9A to 8H. It has a plurality of pairs of conductor element connection terminals 15A-15H each connected to 9H.
  • the shunt resistor 1 and the current detection unit 2 may be manufactured at the same time, or the shunt resistor 1 may be manufactured first and the current detection unit 2 may be manufactured later, or the current detection unit 2 may be manufactured later.
  • the detector 2 may be manufactured first, and the shunt resistor 1 may be manufactured later.
  • the current detection section 2 is electrically connected to the shunt resistor 1 . More specifically, a plurality of pairs of voltage detection contacts 8A-8H are electrically connected to a pair of electrodes 6,7.
  • a pair of conductor elements 20 and 21 are connected to a pair of conductor element connection terminals selected in advance from the plurality of pairs of conductor element connection terminals 15A to 15H based on the actual measurement result of the temperature coefficient of resistance of the shunt resistor 1. Install. More specifically, among the plurality of pairs of voltage detection contacts 8A to 8H, the conductive element connection terminal electrically connected to the pair of voltage detection contacts in which the temperature coefficient of resistance of the shunt resistor 1 is closest to 0, A pair of conductor elements 20, 21 are attached.
  • FIG. 9 is a perspective view showing another embodiment of the shunt resistor 1 that constitutes the current detection device
  • FIG. 10 shows a part of the current detection section 2 electrically connected to the shunt resistor 1 shown in FIG. 11 is a plan view showing an embodiment
  • FIG. 11 is a perspective view showing a current detection device in which a current detection part 2 shown in FIG. 10 is connected to the shunt resistor 1 shown in FIG. 9.
  • FIG. 9 to 11 The configurations and operations of the embodiment shown in FIGS. 9 to 11 that are not particularly described are the same as those of the embodiment described with reference to FIGS. 1 to 7, so redundant description thereof will be omitted.
  • the shunt resistor 1 of the embodiment shown in FIG. 9 does not have the projecting portion 11 as shown in FIG. Further, as shown in FIG. 10, the current detection section 2 of the present embodiment does not have the contact pads 25 and 26 shown in FIG. there is A plurality of pairs of voltage detection contacts 8A to 8H are formed of through holes penetrating through the base plate 3 from the back side to the front side. The fact that these multiple pairs of voltage detection contacts 8A to 8H are arranged along both sides 5a and 5b of the resistor 5 is the same as in the embodiment shown in FIG. An electrical connection between the current detection device and the shunt resistor 1 is established by connecting a plurality of pairs of voltage detection contacts 8A-8H to a pair of electrodes 6,7.
  • FIGS. 12 and 13 are diagrams showing still another embodiment of the current detection device. More specifically, FIG. 12 is a perspective view showing still another embodiment of the shunt resistor 1 constituting the current detection device, and FIG. 13 shows the shunt resistor 1 shown in FIG. 2 is a perspective view showing a current detection device to which a current detection section 2 is connected; FIG.
  • the configuration and operation of the embodiment shown in FIGS. 12 and 13 that are not particularly described are the same as those of the embodiment described with reference to FIGS. 1 to 7, so redundant description thereof will be omitted.
  • the shunt resistor 1 has a plurality of pairs of pin terminals 40A-40H fixed to a pair of electrodes 6,7. These multiple pairs of pin terminals 40A to 40H are arranged along both sides 5a and 5b of the resistor 5.
  • the current detector 2 of this embodiment has the same configuration as the current detector 2 shown in FIG.
  • pin terminals 40A to 40H are inserted into voltage detection contacts 8A to 8H formed of through holes, respectively, thereby establishing electrical connection between current detection section 2 and shunt resistor 1. .
  • the present invention can be used for a current detection device having a shunt resistor and a method for manufacturing the current detection device.

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  • 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

La présente invention concerne un dispositif de détection de courant et son procédé de fabrication et, plus particulièrement, concerne un dispositif de détection de courant pourvu d'une résistance shunt, et un procédé de fabrication du dispositif de détection de courant. Une unité de détection de courant (2) comprend : une pluralité de paires de contacts de détection de tension (8A à 8H) électriquement connectées à une paire d'électrodes (6, 7) d'une résistance shunt (1) ; une pluralité de paires de lignes de signal de tension (9A à 9H) connectées respectivement à la pluralité de contacts de détection de tension (8A à 8H) ; une pluralité de paires de bornes de connexion d'élément conducteur (15A à 15H) connectées respectivement à la pluralité de paires de lignes de signal de tension (9A à 9H) ; et une paire d'éléments conducteurs (20, 21) fixés à n'importe quelle paire de bornes de connexion d'élément conducteur parmi la pluralité de paires de bornes de connexion d'élément conducteur (15A à 15H). La paire de bornes de connexion d'élément conducteur est sélectionnée à l'avance sur la base d'un résultat de mesure réel d'un coefficient de température de résistance de la résistance shunt (1).
PCT/JP2022/044825 2022-01-14 2022-12-06 Dispositif de détection de courant et son procédé de fabrication WO2023135977A1 (fr)

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JP2022-004125 2022-01-14
JP2022004125A JP2023103546A (ja) 2022-01-14 2022-01-14 電流検出装置およびその製造方法

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003270274A (ja) * 1999-02-15 2003-09-25 Isabellenhuette Heusler Gmbh Kg 電流供給システムにおける電流モニタ装置
JP2015204315A (ja) * 2014-04-11 2015-11-16 Koa株式会社 金属板抵抗器
JP2016514841A (ja) * 2013-04-05 2016-05-23 イザベレンヒュッテ ホイスラー ゲー・エム・ベー・ハー ウント コンパニー コマンデイトゲゼルシャフト 測定用抵抗器、および対応する測定方法
JP2018155626A (ja) * 2017-03-17 2018-10-04 矢崎総業株式会社 電流センサ
JP2021174802A (ja) * 2020-04-20 2021-11-01 Koa株式会社 シャント抵抗器
WO2021220895A1 (fr) * 2020-04-27 2021-11-04 Koa株式会社 Dispositif de détection de courant
WO2021220758A1 (fr) * 2020-04-28 2021-11-04 Koa株式会社 Résistance shunt

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003270274A (ja) * 1999-02-15 2003-09-25 Isabellenhuette Heusler Gmbh Kg 電流供給システムにおける電流モニタ装置
JP2016514841A (ja) * 2013-04-05 2016-05-23 イザベレンヒュッテ ホイスラー ゲー・エム・ベー・ハー ウント コンパニー コマンデイトゲゼルシャフト 測定用抵抗器、および対応する測定方法
JP2015204315A (ja) * 2014-04-11 2015-11-16 Koa株式会社 金属板抵抗器
JP2018155626A (ja) * 2017-03-17 2018-10-04 矢崎総業株式会社 電流センサ
JP2021174802A (ja) * 2020-04-20 2021-11-01 Koa株式会社 シャント抵抗器
WO2021220895A1 (fr) * 2020-04-27 2021-11-04 Koa株式会社 Dispositif de détection de courant
WO2021220758A1 (fr) * 2020-04-28 2021-11-04 Koa株式会社 Résistance shunt

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