WO2015060102A1 - 電流検出装置 - Google Patents
電流検出装置 Download PDFInfo
- Publication number
- WO2015060102A1 WO2015060102A1 PCT/JP2014/076535 JP2014076535W WO2015060102A1 WO 2015060102 A1 WO2015060102 A1 WO 2015060102A1 JP 2014076535 W JP2014076535 W JP 2014076535W WO 2015060102 A1 WO2015060102 A1 WO 2015060102A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wiring member
- resistor
- wiring
- current
- highly conductive
- Prior art date
Links
- 238000001514 detection method Methods 0.000 claims abstract description 33
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 239000007769 metal material Substances 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910017566 Cu-Mn Inorganic materials 0.000 description 1
- 229910002482 Cu–Ni Inorganic materials 0.000 description 1
- 229910017871 Cu—Mn Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Images
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
- G01R15/146—Measuring arrangements for current not covered by other subgroups of G01R15/14, e.g. using current dividers, shunts, or measuring a voltage drop
-
- 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
-
- 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—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
Definitions
- the present invention relates to a current detector capable of measuring current with high accuracy while being used as a current wiring.
- shunt resistors to detect the charge / discharge current of batteries, the detection of motor currents that drive electric vehicles and hybrid vehicles, etc., and the detection of electric equipment such as air conditioners and solar cells, etc.
- the current is detected by measuring the potential difference caused by the energization.
- a bus bar is used as a path for flowing current from a power source such as a battery to various electrical devices, and current detection may be performed by connecting a shunt resistor to the bus bar.
- the bus bar and the shunt resistor which are current wirings, are connected by fixing the electrodes of the shunt resistor and the bus bar by screwing or by soldering or the like (Japanese Patent Laid-Open No. 2011-2011). 3694 and JP-A-6-2224014).
- connection method between the bus bar and the shunt resistor, the number of connection portions increases, which causes heat generation, and there is a problem in securing connection reliability. Therefore, a current detection device that can be used with high reliability in applications for detecting a large current is desired.
- the bus bar is generally made of a metal having low volume resistivity such as Cu but high resistance temperature coefficient. For this reason, it is difficult to detect the current with high accuracy even if the resistor portion is formed on a part of the bus bar without changing the material (Cu).
- the present invention has been made based on the above-described circumstances, and an object thereof is to provide a current detection device capable of measuring a current flowing through a bus bar with high accuracy and high reliability.
- the current detection device of the present invention includes a first wiring member made of a highly conductive material, a second wiring member made of a highly conductive material, and a metal having a resistance temperature coefficient smaller than that of the highly conductive material used for these wiring members.
- a first wiring member and a second wiring member are welded to the resistor, and the second wiring member is longer than the first wiring member. .
- both ends of the resistor are firmly fixed to the wiring member, so that the function of the bus bar and the function of the shunt resistor can be integrated, and connection is unnecessary, so the number of parts can be reduced and Connection reliability can be improved.
- the resistor which consists of a metal material with a small resistance temperature coefficient is integrated in a bus-bar, the large current can be detected with high precision like a shunt resistor, and the above-mentioned subject is solved.
- the 2nd wiring member By making the 2nd wiring member long, it becomes possible to cope with a complicated bending shape, and it can be set as a structure according to a user's specification.
- the first wiring member is short, the first wiring member and the resistor part are standardized as a semi-finished product, and the second wiring member has a structure mainly adapted to the user's specifications. Customization is possible. Furthermore, by forming a plurality of bent portions on the second wiring member, it is possible to alleviate stress concentration on the welded portion of the resistor and the wiring member.
- FIG. 1st Example of this invention It is a perspective view of the electric current detection apparatus of 1st Example of this invention.
- the upper part is a plan view of FIG. 1, the lower part is a front view of FIG. 1, and the lower part is a side view of FIG.
- the upper part is a plan view of FIG. 3, and the lower part is a front view of FIG.
- It is a perspective view of the electric current detection apparatus of 5th Example of this invention.
- FIG. 1 and FIG. 2 show a current detection apparatus according to a first embodiment for measuring a current flowing through a bus bar.
- the resistor 13 is welded between the first wiring member 11 and the second wiring member 12, and the second wiring member 12 is longer than the first wiring member 11. That is, this current detection device has a structure in which a shunt resistor 13 is incorporated between the wiring members 11 and 12 and the whole constitutes a bus bar.
- the first wiring member 11 and the second wiring member 12 are band-shaped materials made of a highly conductive material that is a highly conductive metal material such as Cu, Cu-based alloy, and Al.
- High conductivity means that the conductivity is high in general metals and that the conductivity is higher than that of the resistor 13.
- the resistor 13 is made of a metal material made of a resistance alloy material such as Cu—Mn, Cu—Ni, Ni—Cr, etc. whose resistance temperature coefficient is much smaller than that of a metal material such as Cu.
- the both end surfaces of the resistor 13 are welded to the end surface of the wiring member 11 and the end surface of the wiring member 12 so that the end surfaces are brought into contact with each other to form a strong bonding surface. For welding, electron beam welding, laser beam welding, brazing, or the like is used. Note that a structure in which the end of the resistor and the wiring member are overlapped and pressed together may be employed.
- the resistor 13 and the surrounding structure of this current detection device are the same as those of the shunt resistor (see, for example, Japanese Patent Application Laid-Open No. 6-224014), and the same high current detection accuracy can be obtained.
- the wiring member functions as an electrode, and by integrating the function of the bus bar and the function of the shunt resistor, a connection portion through which a large current flows can be eliminated, the number of parts can be reduced, and the current flowing through the bus bar can be increased. It becomes possible to measure with high accuracy and high reliability.
- the second wiring member 12 is longer than the first wiring member 11.
- the second wiring member has a plurality of bent portions.
- the bent portion 16 is a bent portion in the surface direction (horizontal direction)
- the bent portion 17 is a bent portion in the vertical direction from the surface direction (horizontal direction)
- the bent portion 18 is the surface from the vertical direction. It is a bending part to a direction (horizontal direction).
- the long wiring member 12 By providing the long wiring member 12 with a plurality of bent portions 16, 17, and 18, a custom-designed bent shape corresponding to the user's specifications can be obtained, and the equipment to be mounted can be made compact and compact. Moreover, by providing a some bending part, the stress applied to a bus-bar can be disperse
- the both ends of the wiring members 11 and 12 are provided with holes 19 and 20, and a bus bar having a shunt resistance function can be connected between target devices by bolting or the like. In addition, without providing the holes 19 and 20, it can also connect between object apparatuses by welding etc. FIG.
- the first wiring member 11 By making the first wiring member 11 short, standardization including the portion of the resistor 13 can be performed, and mass production is easy. And by making the 2nd wiring member 12 long, it can respond to a complicated bending shape, can make this part a structure according to a user's specification, and has mass productivity and customity. It can be set as the electric current detection apparatus which combines.
- FIGS. 3 to 4 show a current detection apparatus according to a second embodiment for measuring the current flowing through the bus bar.
- This example is also common to the first embodiment in that the resistor 13 is welded between the first wiring member 11 and the long second wiring member 12.
- a straight wiring member can be connected from the hole 19 to the hole 20, but according to the user's specifications, the bent portions 21, 22, 23, and 24 are provided to bypass the wiring member 12 downward. I am letting.
- the device can be downsized and compact on the user side, and the number of parts can be reduced.
- FIG. 5 shows a current detection apparatus according to a third embodiment for measuring the current flowing through the bus bar. Also in this example, the bent portions 25, 26, 27, and 28 are provided corresponding to the user's specifications, and the wiring member 12 is detoured laterally in the horizontal plane. As a result, the device can be downsized and compact on the user side, and the number of parts can be reduced.
- FIG. 6 shows a current detection apparatus according to a fourth embodiment for measuring the current flowing through the bus bar.
- bending portions 29, 30, 31, 32, and 33 are provided corresponding to the user's specifications, and the wiring member 12 is bent downward from the resistor 13 side in the vertical direction (bending portion 29). Detoured, bent in the horizontal direction (bent portion 30), bent in the vertical direction in the horizontal plane (bent portion 31), diverted to the lateral side, further bent in the vertical direction (bent portion 32), and further bent in the horizontal direction (Bending part 33).
- the user can downsize the device and reduce the number of parts.
- FIG. 7 shows a current detector of a fifth embodiment for measuring the current flowing through the bus bar.
- the entire surfaces of the wiring members 11 and 12 and the resistor 13 except for the periphery of the holes 19 and 20 are covered with the protective film 35, and only the voltage detection terminals 14 and 15 protrude from the protective film 35.
- the periphery of the holes 19 and 20 that are not covered with the protective film is surface-treated with plating films 36 and 37 of Sn, Ni, or the like. By covering the protective film 35 and the plating films 36 and 37, oxidation of the entire bus bar can be prevented.
- the protective film 35 a coating made of an inorganic material such as glass or ceramic, a non-conductive oxide film formed by alumite treatment, or the like is used.
- the voltage detection terminals 14 and 15 are erected in the vertical direction on the surface of the wiring member.
- the voltage detection terminals 14 and 15 may be provided in the vicinity of the joint surface of the wiring member with the resistor, and the configuration shown in FIG. 8 is also possible. That is, in the left diagram of FIG. 8, the voltage detection terminals 14a and 15a are erected in the horizontal direction on the side surface of the wiring member. In the right diagram of FIG. 8, cuts 38 and 39 are provided in the vicinity of the joint surface of the wiring member with the resistor, and the space between the cut and the joint surface is used as the voltage detection terminals 14b and 15b.
- the present invention can be suitably used for a current detection device that measures current in a large current wiring.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
Description
Claims (4)
- 高導電材料からなる第1の配線部材と、
高導電材料からなる第2の配線部材と、
これらの配線部材に用いられる高導電材料よりも抵抗温度係数の小さい金属材からなる抵抗体を備え、
該抵抗体に、第1の配線部材と第2の配線部材が溶接され、第2の配線部材は第1の配線部材よりも長尺であることを特徴とする電流検出装置。 - 前記第2の配線部材に複数の曲げ部を有することを特徴とする請求項1に記載の電流検出装置。
- 前記複数の曲げ部は、水平方向および垂直方向への曲げ部を含むことを特徴とする請求項2に記載の電流検出装置。
- 第1および第2の配線部材における前記抵抗体の近傍に、電圧検出端子が形成されていることを特徴とする請求項1から請求項3のいずれかに記載の電流検出装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020167013238A KR102181276B1 (ko) | 2013-10-25 | 2014-10-03 | 전류 검출 장치 |
DE112014004887.9T DE112014004887T5 (de) | 2013-10-25 | 2014-10-03 | Stromdetektionsvorrichtung |
CN201480058057.5A CN105683764A (zh) | 2013-10-25 | 2014-10-03 | 电流检测装置 |
US15/133,759 US20160231359A1 (en) | 2013-10-25 | 2016-04-20 | Current detection device, its manufacturing method, and its mounting structure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-222556 | 2013-10-25 | ||
JP2013222556A JP6177090B2 (ja) | 2013-10-25 | 2013-10-25 | 電流検出装置の製造方法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/133,759 Continuation US20160231359A1 (en) | 2013-10-25 | 2016-04-20 | Current detection device, its manufacturing method, and its mounting structure |
Publications (1)
Publication Number | Publication Date |
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WO2015060102A1 true WO2015060102A1 (ja) | 2015-04-30 |
Family
ID=52992705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/076535 WO2015060102A1 (ja) | 2013-10-25 | 2014-10-03 | 電流検出装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20160231359A1 (ja) |
JP (1) | JP6177090B2 (ja) |
KR (1) | KR102181276B1 (ja) |
CN (1) | CN105683764A (ja) |
DE (1) | DE112014004887T5 (ja) |
WO (1) | WO2015060102A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016186022A1 (ja) * | 2015-05-19 | 2016-11-24 | Koa株式会社 | 電流検出装置 |
WO2017046116A1 (en) * | 2015-09-14 | 2017-03-23 | Carlo Gavazzi Service Ag | Modular measurement system for photovoltaic systems |
JP2017208474A (ja) * | 2016-05-19 | 2017-11-24 | サンコール株式会社 | シャント式電流検出装置 |
WO2020170924A1 (ja) * | 2019-02-22 | 2020-08-27 | パナソニックIpマネジメント株式会社 | 電流検出装置、および電流検出装置を用いたリレーモジュールシステム |
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JP6795879B2 (ja) * | 2015-06-15 | 2020-12-02 | Koa株式会社 | 抵抗器及びその製造方法 |
JP2017045875A (ja) * | 2015-08-27 | 2017-03-02 | 日本精工株式会社 | 半導体モジュールおよびその製造方法 |
KR102098906B1 (ko) * | 2016-03-08 | 2020-04-08 | 주식회사 엘지화학 | 솔더 크랙 방지구조를 갖는 션트 저항 모듈 |
JP6815772B2 (ja) * | 2016-07-13 | 2021-01-20 | Koa株式会社 | 電流測定装置 |
JP2018132386A (ja) | 2017-02-14 | 2018-08-23 | Koa株式会社 | 電流測定装置および電流検出用抵抗器 |
JP2018189384A (ja) | 2017-04-28 | 2018-11-29 | 株式会社Gsユアサ | 電流検出装置、管理装置、エンジン始動用のバッテリ |
KR102287317B1 (ko) * | 2017-06-07 | 2021-08-10 | 현대자동차주식회사 | 전류센서 |
EP3527995B1 (en) * | 2018-02-20 | 2023-01-25 | Fico Triad, S.A. | Shunt resistor and measurement system |
KR102312332B1 (ko) * | 2018-12-18 | 2021-10-12 | 주식회사 엘지에너지솔루션 | 나사 체결 구조를 갖는 션트 저항 모듈 |
JP7265751B2 (ja) * | 2019-02-19 | 2023-04-27 | 株式会社アスター | バスバー接合体の製造方法 |
DE102019114524A1 (de) * | 2019-05-29 | 2020-12-03 | Valeo Siemens Eautomotive Germany Gmbh | Anordnung mit einem Leistungselektroniksubstrat und einem Kontaktelement, Leistungselektronikeinheit und Stromrichter |
CN110068718B (zh) * | 2019-05-30 | 2022-01-04 | 山东联合电力产业发展有限公司 | 一种电阻分压的电子式互感器 |
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- 2014-10-03 WO PCT/JP2014/076535 patent/WO2015060102A1/ja active Application Filing
- 2014-10-03 CN CN201480058057.5A patent/CN105683764A/zh active Pending
- 2014-10-03 KR KR1020167013238A patent/KR102181276B1/ko active IP Right Grant
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JP2016217829A (ja) * | 2015-05-19 | 2016-12-22 | Koa株式会社 | 電流検出装置 |
CN107533891A (zh) * | 2015-05-19 | 2018-01-02 | Koa株式会社 | 电流检测装置 |
KR20180011136A (ko) * | 2015-05-19 | 2018-01-31 | 코아가부시끼가이샤 | 전류 검출 장치 |
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CN107533891B (zh) * | 2015-05-19 | 2019-12-17 | Koa株式会社 | 电流检测装置 |
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JP2017208474A (ja) * | 2016-05-19 | 2017-11-24 | サンコール株式会社 | シャント式電流検出装置 |
WO2020170924A1 (ja) * | 2019-02-22 | 2020-08-27 | パナソニックIpマネジメント株式会社 | 電流検出装置、および電流検出装置を用いたリレーモジュールシステム |
Also Published As
Publication number | Publication date |
---|---|
KR102181276B1 (ko) | 2020-11-20 |
DE112014004887T5 (de) | 2016-07-14 |
CN105683764A (zh) | 2016-06-15 |
JP2015083944A (ja) | 2015-04-30 |
KR20160078385A (ko) | 2016-07-04 |
JP6177090B2 (ja) | 2017-08-09 |
US20160231359A1 (en) | 2016-08-11 |
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