WO2016186022A1 - 電流検出装置 - Google Patents
電流検出装置 Download PDFInfo
- Publication number
- WO2016186022A1 WO2016186022A1 PCT/JP2016/064256 JP2016064256W WO2016186022A1 WO 2016186022 A1 WO2016186022 A1 WO 2016186022A1 JP 2016064256 W JP2016064256 W JP 2016064256W WO 2016186022 A1 WO2016186022 A1 WO 2016186022A1
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- WO
- WIPO (PCT)
- Prior art keywords
- wiring
- current detection
- detection device
- wiring members
- shunt
- Prior art date
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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
- 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
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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
-
- 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
-
- 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
- G01R19/32—Compensating for temperature change
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- 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
- H01C1/148—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals embracing or surrounding the resistive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C13/00—Resistors not provided for elsewhere
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C13/00—Resistors not provided for elsewhere
- H01C13/02—Structural combinations of resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/06—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material including means to minimise changes in resistance with changes in temperature
Definitions
- the present invention relates to a current detector capable of measuring current with high accuracy while being used as a current wiring.
- a shunt resistor is used to detect the charge / discharge current of a battery, the current of a motor that drives an electric vehicle, a hybrid vehicle, etc., the current of an electric device such as an air conditioner or a power generation facility using a solar cell, etc. Current is detected by measuring a potential difference caused by energization of the body.
- a method for connecting a shunt resistor and a bus bar a method is known in which holes are formed in the electrode portion of the shunt resistor and the bus bar, and the bolts and nuts are fixed through the holes.
- a method is known in which the electrode part of the shunt resistor is formed in a bolt shape, and a bus bar is fixed to the electrode part using a nut (see, for example, re-published patent WO2011-68205).
- Japanese Patent Laid-Open No. 2008-39571 discloses a bus bar composed of long first terminals and second terminals, and shunt resistors welded and fixed between these terminals (see FIG. 6 and the like). .
- a bus bar configured as a shunt resistor is connected and fixed to other bus bars or the like with bolts and nuts. At that time, the bolt or nut may move freely, and the fixing work may be complicated. For example, in a narrow space such as an engine room of an automobile, it is not always easy to rotate and fasten one of the bolts and nuts while fixing the other.
- the present invention has been made based on the above-described circumstances, and provides a current detection device capable of easily connecting and fixing a member such as another bus bar to a bus bar configured as a shunt resistor by rotating and fastening a screwing member. For the purpose.
- the current detection device of the present invention includes a pair of wiring members made of a conductive metal material, a metal material having a smaller temperature coefficient of resistance than these wiring members, and a resistor bonded to the wiring member, A screw fixing member which is a member different from the wiring member and is fixed to any of the wiring members.
- it is a bus bar-shaped shunt-type current detection device, and has a structure in which one of the screwing members (bolts or nuts) different from the wiring member is fixed to the wiring member. Therefore, one screwing member is fixed to one surface of the wiring member, the other member disposed on the other surface of the wiring member is sandwiched, and the other screwing member is rotationally fastened to the one screwing member.
- the screwing member is a separate member from the wiring member, a strong screwing member can be selected. Further, the processing of the wiring member itself can be minimized.
- the bus bar-shaped current detection device integrates the bus bar wiring function and the shunt-type current detection function, so the number of components can be reduced, the number of connection points is reduced, and highly accurate and reliable current detection is possible. It becomes.
- FIG. 1 It is a perspective view of the electric current detection apparatus of Example 1 of this invention.
- the left figure is an exploded perspective view and the right figure is a sectional view showing the assembly structure of the nut (one screwing member) in FIG.
- the left figure is an exploded perspective view and the right figure is a cross-sectional view showing the assembly structure of another shape nut (one screwing member).
- It is a disassembled perspective view which fixes another bus bar to the electric current detection apparatus of Example 1.
- FIG. It It is a disassembled perspective view of the upper surface side of the current detection device according to the second embodiment. It is a perspective view by the side of the lower surface of the electric current detection apparatus of Example 2.
- FIG. It is a perspective view of the upper surface side of the current detection device according to the third embodiment.
- FIG. 1 It is a perspective view by the side of the lower surface of the electric current detection apparatus of Example 3.
- FIG. It is a disassembled perspective view which fixes another bus bar to the electric current detection apparatus of Example 4.
- FIG. It is a disassembled perspective view which fixes another bus bar to the electric current detection apparatus of Example 5.
- FIG. It is a perspective view of the electric current detection apparatus of Example 6. It is sectional drawing which shows the assembly
- FIG. 1 It is a perspective view by the side of the lower surface of the electric current detection apparatus of Example 3.
- FIG. It is a disassembled perspective view which fixes another bus bar to the electric current detection apparatus of Example 4.
- FIG. It is a disassembled perspective view which fixes another bus bar to the electric current detection apparatus of Example 5.
- FIG. 6 It is a perspective view by the side of the lower surface of the electric current
- FIG. 1 shows a current detection device 10 according to a first embodiment of the present invention.
- This apparatus includes a long first wiring member 11 and a second wiring member 12 made of a highly conductive metal material such as Cu, Cu-based alloy, and Al, and a metal material having a resistance temperature coefficient smaller than those of the wiring members. And the resistor 13 joined with the 1st wiring member and the 2nd wiring member is provided.
- the long first wiring member 11 and the second wiring member 12 are bus bars serving as current paths, and are also terminal materials joined to the resistor 13.
- the length and shape of the first wiring member 11 and the second wiring member 12 may be the same or different.
- 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 joint surface.
- For welding electron beam welding, laser beam welding, brazing, or the like is used. It is also possible to employ a structure in which the end of the resistor and the end of the wiring member are overlapped and pressed. Therefore, the current detection device 10 has a bus bar shape as a whole.
- voltage detection terminals 14 and 15 are provided in the vicinity of the resistor 13.
- the current flowing through the wiring members 11 and 12 passes through the resistor 13, and the potential difference between both ends is detected by the voltage detection terminals 14 and 15. Accordingly, high current detection accuracy can be obtained by the resistor 13 of the current detection device 10 and the surrounding structure.
- the wiring members 11 and 12 serve as electrodes (terminal materials), and the function of the bus bar and the function of the shunt resistor are integrated to eliminate the need for a connection portion through which a large current flows, thereby reducing the number of parts.
- the current flowing through the bus bar can be measured with high accuracy and high reliability.
- the pair of wiring members 11 and 12 includes a bent portion C. Thereby, the freedom degree of wiring arrangement
- the both ends of the wiring members 11 and 12 on both sides of the resistor 13 are provided with screwing members (nuts) 16 which are fixed to at least one of the wiring members and are separate from the wiring member.
- the nut 16 includes a female screw portion 16a, and the protruding portion 16c is press-fitted into the hole 11c of the wiring member 11 and fixed (see FIG. 2).
- the hole 11c of the wiring member 11 has a slightly smaller diameter than the protruding portion 16c.
- the wiring member 11 is provided with the hole 11c, and the flat portion 16b of the nut 16 is in contact with the surface of the wiring member 11 around the hole 11c.
- the outer peripheral surface of the protrusion 16c of the nut 16 is in contact with the inner peripheral surface of the hole 11a.
- These contact surfaces may be fixed by welding.
- the wiring members 11 and 12 are made of soft copper, but the flat portion (surface) 16b of the nut 16 is in contact with the surfaces of the wiring members 11 and 12. For this reason, the wiring members 11 and 12 are not damaged even if they are tightened to some extent.
- FIG. 3 shows a modification of the screwing member (nut) 16.
- the nut 16A has a hexagonal surface 16d on the outer periphery.
- the wiring member 11 includes a shallow hexagonal step portion 11b and a circular through hole 11c provided in the center thereof.
- the nut 16A includes a female screw portion 16a, and a hexagonal surface 16d is press-fitted and fixed to a shallow hexagonal step portion 11b. Accordingly, the bottom surface of the nut 16A is in contact with the surface of the shallow step portion 11b around the through hole 11c, and the surface 16d which is the side surface of the nut 16A is in contact with the inner peripheral surface of the shallow step portion 11b.
- the surface may be fixed by welding.
- FIG. 4 shows an example in which the end portion of the shunt-type current detection device of the first embodiment is connected and fixed to another bus bar.
- a through hole (not shown) at the end of the wiring member 11 and a through hole 18c at the end of another wiring member 18 are aligned, a bolt 17 is inserted into both holes, and the male screw portion 17a is connected to the female of the nut 16.
- the screw part 16a is rotationally fastened (screwed).
- one screwing member (nut) 16 is fixed to one surface of the wiring members 11, 12, and the other wiring members 18, 19 are arranged and sandwiched on the other surface of the wiring members 11, 12, and the other screwing member
- the (bolt) 17 is rotationally fastened to the one screw fixing member (nut) 16. Since the nut 16 is a separate member from the wiring members 11 and 12 and is fixed to the wiring members 11 and 12, it is not necessary to fix the nut 16, and only the bolt 17 is rotationally fastened to the nut 16.
- the wiring members 18 and 19 can be connected and fixed to the wiring members 11 and 12.
- the screwing member is a separate member from the wiring member, a strong screwing member can be selected. Further, the processing of the wiring member itself can be minimized. And, since it is applied to a bus bar-shaped current detection device that integrates the bus bar wiring function and the shunt-type current detection function, the number of parts can be reduced, and the number of connection points can be reduced, enabling highly accurate current detection. Become.
- 5A-5B show the current detection device 10A according to the second embodiment, in which the voltage detection terminals 14A and 14B are fixed to the wiring members 11 and 12, and one of the screwing members (nuts) 16 as another member is fixed.
- 11 and 12 are used and fastened with bolts 17 as separate members.
- a nut 16 aligned with the hole 11c is fixed to the wiring member 11 by welding or the like.
- the voltage detection terminals 14A and 14B are provided with flat connection portions 14a, and the connection portions are provided with through holes 14c. Then, the through hole 14c of the voltage detection terminal is aligned with the hole portion 11c of the wiring member, the male screw portion 17a of the bolt 17 is inserted, and rotationally fastened (screwed) to the female screw portion 16a of the nut 16. Therefore, the fixing operation of the nut 16 is unnecessary, and the connection and fixing of the voltage detection terminals 14A and 14B to the wiring members 11 and 12 can be performed only by the rotation fastening operation of the bolts 17. This is particularly useful when the rotary fastening operation can be performed only from the bolt side.
- FIGS 6A-6B show the current detection device 10B of the third embodiment, in which the circuit board 20 connected to the voltage detection terminals 14 and 15 provided on the wiring members 11 and 12 is fixed. Also in this embodiment, the wiring members 11 and 12 are provided with through holes (not shown), and screwing members (nuts) 16 that are aligned and fixed to the through holes are provided on the lower surface side of the wiring members 11 and 12.
- the circuit board 20 having a through hole is disposed on the upper surface side of the wiring member, and the bolt 17 is inserted through the through hole and the through hole of the wiring member and is rotationally fastened (screwed) to the nut 16.
- a wiring pattern is formed on the circuit board 20, and an amplifier circuit, a microcomputer, a signal output terminal, and the like are mounted (not shown). As a result, the detection voltage signal extracted from the wiring pattern connected to the voltage detection terminals 14 and 15 is amplified and sent to a voltage detection device (not shown).
- the fixing operation of the nut 16 is unnecessary, and the circuit board 20 connected to the voltage detection terminals 14 and 15 can be easily fixed to the wiring members 11 and 12 only by the rotation and fastening operation of the bolts 17.
- FIG. 7 shows an example in which other bus bars 18 and 19 are connected and fixed to the current detection device 10C of the fourth embodiment.
- the nut 16 is fixed to one surface of the wiring members 11 and 12 (surface opposite to the voltage detection terminals 14 and 15 in this example), and the other bus bars 18 and 19 are connected to the other surfaces of the wiring members 11 and 12.
- the bolt 17 is rotationally fastened to the nut 16, and the other bus bars 18 and 19 are connected and fixed in the above embodiment. It is the same.
- the bus bar configured as the shunt resistor is long, for example, when vibration occurs in the bus bar configured as the shunt resistor due to vibration of the engine or the like, the resistor is joined to the terminal material. Stress due to vibration is applied to the interface, which may cause an error in current detection.
- the nut 21 fixed to the wiring members 11 and 12 and the through holes of the wiring members 11 and 12 and the through holes of the wiring members 18 and 19 are inserted into the wiring members 11, 12 and 18, 19.
- bolt 22 to the nut 21 is provided.
- the wiring member 12 is fixed to the fixing portion 24 with bolts 23.
- the wiring members 11 and 12 are bus bar-shaped and long. Therefore, for example, when arranged in an engine room or the like, vibration may occur in the bus bar-shaped current detection device due to vibration of the engine. If it does so, a vibration will be added to the interface of the resistor 13 and the wiring members 11 and 12, and current detection accuracy may deteriorate. Therefore, by providing the stationary member fixing portion 24 in the middle of the long wiring members 11 and 12, vibration can be prevented from being applied to the interface between the resistor 13 and the wiring members 11 and 12, and current detection accuracy can be prevented. Can be prevented.
- FIG. 8 shows a current detection device 10D of the fifth embodiment.
- This embodiment is a modification of the above-described fixing portion for preventing vibration. That is, an example in which the intermediate portion of the wiring member 11 is fixed to the stationary plate member 27 that is a stationary body by rotating and fastening the bolt 26 to the nut 25 fixed to the wiring member 11 with the wiring member 11 and the stationary plate member 27 interposed therebetween. It is.
- vibration generated in the bus bar-shaped current detection device 10D can be suppressed, and highly accurate current detection can be performed.
- One screwing member 16, 21 is fixed to one surface of the wiring member 11, and another wiring member 18 is disposed and sandwiched on the other surface of the wiring member 11, and the other screwing member 17, 22 is connected to the one screwing. It is the same as that of the said Example to rotationally fasten to the members 16 and 21.
- FIG. 1 is the same as that of the said Example to rotationally fasten to the members 16 and 21.
- FIG. 10 shows an example in which the end portion is connected and fixed to the other bus bars 18 and 19 by the other screwing members (nuts). All of the above-described screw fastening members including the bolts 17 and the nuts 16 are obtained by fixing the nuts 16 to the wiring members 11 and 12. However, as shown in the sixth embodiment, the bolts 17 are fixed to the wiring members 11 and 12, the other bus bars 18 and 19 are arranged and sandwiched, and the nuts 16 are rotationally fastened (screwed), thereby the other bus bars 18 and 19. , 19 may be fixed.
- the bolt 17 includes a male screw portion 17a, and a female screw portion 16a (not shown) of the nut 16 is rotationally fastened to the male screw portion 17a.
- the bolt 17 has a protrusion 17 c and is fitted into a hole provided in the wiring members 11 and 12, and the outer peripheral surface of the bolt 17 abuts on the inner peripheral surface of the hole provided in the wiring members 11 and 12. Further, the flat surface 17b of the bolt may come into contact with the surface around the hole provided in the wiring members 11 and 12, and these contact surfaces may be fixed by welding.
- one screwing member (bolt) 17 is fixed to one surface of the wiring members 11, 12, and the other wiring members 18, 19 are fixed to the other surface of the wiring members 11, 12.
- the other screwing member (nut) 16 is rotationally fastened to the one screwing member (bolt) 17. This facilitates the work of connecting and fixing the ends of the bus bars (wiring members 11 and 12) to the ends of the other bus bars (wiring members 18 and 19) and the like, as in the above embodiments.
- the present invention can be suitably used for a bus bar-shaped shunt-type current detection device.
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
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Abstract
Description
Claims (7)
- 導電性の金属材からなる一対の配線部材と、
これらの配線部材よりも抵抗温度係数の小さい金属材であって、配線部材と接合された抵抗体と、
少なくともいずれかの配線部材に固定された、該配線部材とは別部材のネジ止め部材と、を備えたシャント式電流検出装置。 - シャント式電流検出装置は、全体としてバスバー状である、請求項1に記載のシャント式電流検出装置。
- ネジ止め部材は、雄ネジ部または雌ネジ部を備える、請求項1に記載のシャント式電流検出装置。
- 電極に孔を備え、ネジ止め部材は、孔の周囲の電極表面に当接している、請求項1に記載のシャント式電流検出装置。
- 電極に孔を備え、ネジ止め部材の一部は、孔の内面に当接している、請求項1に記載のシャント式電流検出装置。
- 一対の配線部材は、いずれか一方または双方に屈曲部を備える、請求項1に記載のシャント式電流検出装置。
- 導電性の金属材からなる配線部材と、該配線部材よりも抵抗温度係数の小さい金属材であって該配線部材と接合した抵抗体を備えた電流検出装置の該配線部材の一面に一方のネジ止め部材を固定し、
該配線部材の他面に他の部材を配置して挟み、他方のネジ止め部材を上記一方のネジ止め部材に回転締着する、電流検出装置への他の部材の固定方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112016002235.2T DE112016002235T5 (de) | 2015-05-19 | 2016-05-13 | Stromdetektionsvorrichtung |
KR1020177035317A KR102515302B1 (ko) | 2015-05-19 | 2016-05-13 | 전류 검출 장치 |
CN201680028293.1A CN107533891B (zh) | 2015-05-19 | 2016-05-13 | 电流检测装置 |
US15/572,938 US10473695B2 (en) | 2015-05-19 | 2016-05-13 | Current detection device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2015101880A JP6714974B2 (ja) | 2015-05-19 | 2015-05-19 | 電流検出装置 |
JP2015-101880 | 2015-05-19 |
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WO2016186022A1 true WO2016186022A1 (ja) | 2016-11-24 |
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PCT/JP2016/064256 WO2016186022A1 (ja) | 2015-05-19 | 2016-05-13 | 電流検出装置 |
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US (1) | US10473695B2 (ja) |
JP (1) | JP6714974B2 (ja) |
KR (1) | KR102515302B1 (ja) |
CN (1) | CN107533891B (ja) |
DE (1) | DE112016002235T5 (ja) |
WO (1) | WO2016186022A1 (ja) |
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US11346863B2 (en) * | 2019-04-02 | 2022-05-31 | Eberspächer Controls Landau Gmbh & Co. Kg | Current-measuring unit |
WO2022172749A1 (ja) * | 2021-02-12 | 2022-08-18 | 住友電装株式会社 | 電気接続箱 |
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PL3330720T3 (pl) * | 2016-11-30 | 2020-02-28 | Yuyang Dnu Co., Ltd | Układ cyklera do ładowania-rozładowania |
JP6436275B1 (ja) * | 2017-01-11 | 2018-12-12 | 株式会社村田製作所 | 電流検出デバイス、給電装置 |
JP7288314B2 (ja) * | 2018-03-08 | 2023-06-07 | 古河電気工業株式会社 | シャント構造体、電流検出装置、電流検出装置の製造方法及び電流検出装置の取付方法 |
JP7184567B2 (ja) * | 2018-08-24 | 2022-12-06 | 矢崎総業株式会社 | シャント式電流センサおよびシャント抵抗付きバスバー |
CN209055581U (zh) * | 2018-09-17 | 2019-07-02 | 宁德时代新能源科技股份有限公司 | 采样组件及电池包 |
KR102258813B1 (ko) * | 2018-11-20 | 2021-05-31 | 주식회사 엘지에너지솔루션 | 복합형 전류 측정장치 |
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JP7288315B2 (ja) * | 2019-03-08 | 2023-06-07 | 古河電気工業株式会社 | シャント構造体及び電流検出装置 |
DE102019203496B3 (de) * | 2019-03-14 | 2020-07-16 | Te Connectivity Germany Gmbh | Passiver Stromsensor mit vereinfachter Geometrie |
JP7399647B2 (ja) | 2019-08-19 | 2023-12-18 | 矢崎総業株式会社 | シャント抵抗式電流検出装置 |
WO2021090905A1 (ja) * | 2019-11-07 | 2021-05-14 | Koa株式会社 | シャント抵抗モジュール及び、シャント抵抗モジュールの実装構造 |
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- 2016-05-13 US US15/572,938 patent/US10473695B2/en active Active
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Also Published As
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KR102515302B1 (ko) | 2023-03-29 |
KR20180011136A (ko) | 2018-01-31 |
CN107533891B (zh) | 2019-12-17 |
US10473695B2 (en) | 2019-11-12 |
JP2016217829A (ja) | 2016-12-22 |
DE112016002235T5 (de) | 2018-02-22 |
CN107533891A (zh) | 2018-01-02 |
JP6714974B2 (ja) | 2020-07-01 |
US20180156844A1 (en) | 2018-06-07 |
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