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ROGOWSKI CURRENT SENSOR

外国特許コード F170009023
整理番号 (S2015-1808-N0)
掲載日 2017年3月29日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2016JP071542
国際公開番号 WO 2017014297
国際出願日 平成28年7月22日(2016.7.22)
国際公開日 平成29年1月26日(2017.1.26)
優先権データ
  • 特願2015-145674 (2015.7.23) JP
発明の名称 (英語) ROGOWSKI CURRENT SENSOR
発明の概要(英語) Provided is a current sensor that, in a power semiconductor device, is capable of measuring current variations between chips and within a chip, defect discovery, and preventing failure. In a Rogowski current sensor having a return line path 2 that continuously connects a plurality of coils 1 along one closed line L and that is provided from the winding end of the last coil to the winding start side of the first coil of the plurality of coils 1, and detecting a voltage induced between the winding start side terminal of the first coil and the terminal of the return line path 2 as a function of the current in a circuit to be measured that is inserted inside the closed line L, each coil 1 that constitutes the plurality of coils 1 is formed on a plane perpendicular to the closed line L, among adjacent coils the space between the winding end of one coil and the winding start of the next coil is connected by an outbound line path 2 parallel to the closed line L, and the entire outbound line path 2 and the return line path 3 are arranged in proximity.
特許請求の範囲(英語) [claim1]
1. As you connect continually, alongside the line which one closes the plural coils, as function of electric current of the suffering measurement circuit which *** passes inside the line which the voltage where the last coil of the aforementioned plural coils it finishes winding, from the first coil winding starts the returning/repeating railroad track in parallel to the line which the description above to side is closed it possesses, the aforementioned first coil winding starts with the terminals of the side terminal and the aforementioned returning/repeating railroad track is induced the description above is closed in the [rogosuki] type electric current sensor which it detects,
Each coil which forms the aforementioned plural coils, the description above is formed on the plane surface which crosses in the line which is closed, among the coils which are adjacent, a certain coil finishes winding and the following coil winding starts and between, is connected the description above by the going railroad track in parallel to the line which is closed, going railroad track the whole and the aforementioned returning/repeating railroad track description above approach, and the [rogosuki] type electric current sensor which features that it is arranged.
[claim2]
2. As you connect continually, alongside the line which one closes the plural coils, as function of electric current of the suffering measurement circuit which *** passes inside the line which the voltage where the last coil of the aforementioned plural coils it finishes winding, from the first coil winding starts the returning/repeating railroad track in parallel to the line which the description above to side is closed it possesses, the aforementioned first coil winding starts with the terminals of the side terminal and the aforementioned returning/repeating railroad track is induced the description above is closed in the [rogosuki] type electric current sensor which it detects,
Each coil which forms the aforementioned plural coils, when the description above projecting to the plane surface which crosses in the line which is closed, is formed with the form which becomes rectangular, 3 sides which are segregated from the inside aforementioned returning/repeating railroad track of the particular each coil the description above are formed on the plane surface which crosses in the line which is closed, the remaining 1 sides in order to connect with the following coil, are the going railroad track which was formed slantedly, as for the surface where the aforementioned slanted side forms in coil the whole description above the description above being parallel, with the surface which the line which is closed makes and approaching the aforementioned returning/repeating railroad track, the [rogosuki] type electric current which features that it is arrangedSensor.
[claim3]
3. The aforementioned each coil has the hole where the suffering measurement circuit *** is done on the center, is formed the 1st coil pattern which was formed to 2 layer where the annular baseplate which at least possesses the electric conduction pattern layer of 3 layer differs and by with 2nd coil pattern and these 1st coil patterns and the through hole where you connect between 2nd coil pattern,
The aforementioned going railroad track is formed by the inner each layer of the aforementioned 3 layer,
It approached the aforementioned returning/repeating railroad track, to the aforementioned going railroad track, the particular going railroad track the [rogosuki] type electric current sensor of the claim 1 statement which was formed to the layer which differs.
[claim4]
4. The aforementioned going railroad track is formed by the same layer as the aforementioned 1st coil pattern,
The aforementioned going railroad track and it approached the aforementioned returning/repeating railroad track, aforementioned 1st coil pattern and 2nd coil pattern the [rogosuki] type electric current sensor of the claim 3 statement which was formed to the layer which differs.
[claim5]
5. As for the aforementioned returning/repeating railroad track, the [rogosuki] type electric current sensor of the claim 4 statement which was formed to the layer which between the aforementioned 1st coil pattern and the aforementioned 2nd coil pattern is.
[claim6]
6. Among the aforementioned 1st coil patterns of the aforementioned last coil, as for the 1st coil pattern which the aforementioned returning/repeating railroad track is connected, from the aforementioned through hole which the aforementioned 2nd coil pattern is connected, as the aforementioned returning/repeating railroad track from the claim 3 which was wired in the same layer in no section of 5 the [rogosuki] type electric current sensor of statement.
[claim7]
7. In the aforementioned [rogosuki] type electric current sensor, the description above length of the line which is closed (L), distance of the aforementioned going railroad track and the aforementioned returning/repeating railroad track (d), sum total of the area of each coil (A), the [rogosuki] type electric current sensor of the claim 3 statement which becomes the relationship of d<0.1 A/L.
[claim8]
8. In the claim 3 where either the aforementioned coil and the aforementioned returning/repeating railroad tracks the 1st electrode pad which one side is connected is on a center and is the 2nd electrode pad where another side is connected to the both sides the [rogosuki] type electric current sensor of statement.
[claim9]
9. The [rogosuki] type electric current sensor of the claim 8 statement where the connector is connected with to the aforementioned 1st electrode pad and the aforementioned 2nd electrode pad.
[claim10]
10. In the part where, the aforementioned coil, the going railroad track or the returning/repeating railroad track of the aforementioned annular baseplate are not formed, the aforementioned suffering measurement circuit the [rogosuki] type electric current sensor of the claim 3 statement which provides the cut in order *** to make the hole of the aforementioned annular baseplate.
[claim11]
11. Until the aforementioned 1st coil pattern, 2nd coil pattern, the coil group where the through hole and the going railroad track line up from the 1st electrode pad facing toward the aforementioned cut the aforementioned returning/repeating railroad track which is wired, is connected to the aforementioned coil group to the 2nd electrode pad the [rogosuki] type electric current sensor of the claim 10 statement which was wired.
[claim12]
12. The aforementioned 1st coil pattern, 2nd coil pattern, the coil group where the through hole and the going railroad track line up is divided with by the 1st coil group and the 2nd coil group,
Until the aforementioned 1st coil group from the 1st electrode pad facing toward the aforementioned cut the aforementioned 2nd coil group where it is wired, the aforementioned returning/repeating railroad track which is connected to the aforementioned 1st coil group is wired facing toward the aforementioned cut, is connected to the aforementioned returning/repeating railroad track to the 2nd electrode pad the [rogosuki] type electric current sensor of the claim 10 statement which was wired.
[claim13]
13. The aforementioned 1st coil pattern, 2nd coil pattern, the coil group where the through hole and the going railroad track line up the 1st coil group and is divided by the 2nd coil group,
The aforementioned returning/repeating railroad track the 1st railroad track and is divided by the 2nd railroad track,
The aforementioned 1st coil group it is wired from the 1st electrode pad facing toward the aforementioned cut, the aforementioned 2nd railroad track where the aforementioned 1st railroad track which is connected to the aforementioned 1st coil group is wired to position of the aforementioned 1st electrode pad, the aforementioned 2nd coil group which is connected to the aforementioned 1st railroad track is wired facing toward the aforementioned cut, is connected to the aforementioned 2nd coil group to the 2nd electrode pad the [rogosuki] type electric current sensor of the claim 10 statement which was wired.
[claim14]
14. The [rogosuki] type electric current sensor of the claim 3 statement where coil interval of the aforementioned plural coils is regular interval.
[claim15]
15. The [rogosuki] type electric current sensor of the claim 3 statement where the amplifier circuit is loaded onto the aforementioned annular baseplate.
[claim16]
16. As for the aforementioned annular baseplate the [rogosuki] type electric current sensor of the claim 3 statement which is covered with the noise seal.
[claim17]
17. As for the aforementioned noise seal, from the inner layer where the aforementioned each coil was formed the 1st electric conduction pattern which was formed to the respective outside layer outside and in the claim 16 which has 2nd electric conduction pattern the [rogosuki] type electric current sensor of statement.
[claim18]
18. The 1st through hole where the aforementioned noise seal furthermore, penetrated between the layer where the aforementioned 1st electric conduction pattern and the aforementioned 2nd electric conduction pattern were formed, was formed to the both of inside perimeter side and peripheral side of the aforementioned coil, according to circumferential direction and having the 2nd through hole,
The aforementioned 1st electric conduction pattern and the aforementioned 1st through hole and the formation of the loop with the aforementioned 2nd electric conduction pattern and the aforementioned 2nd through hole in order to evade, in the claim 17 where the no connection section was formed to the aforementioned loop the [rogosuki] type electric current sensor of statement.
[claim19]
19. In order the aforementioned annular baseplate when it loads onto the power semiconductor chip or power semiconductor module, the aforementioned annular baseplate, to surround the electrode, the conductive part and the bonding wire which are connected with the aforementioned power semiconductor chip or power semiconductor module, the [rogosuki] type electric current sensor of the claim 3 statement which is formed.
[claim20]
20. In order to surround in each bonding wire 1 of the power semiconductors, the [rogosuki] type electric current sensor of the claim 19 statement which is formed.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • KYUSHU INSTITUTE OF TECHNOLOGY
  • 発明者(英語)
  • OMURA ICHIRO
  • TSUKUDA MASANORI
国際特許分類(IPC)
指定国 (WO201714297)
National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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