JP2012230791A - Current measurement device - Google Patents

Current measurement device Download PDF

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JP2012230791A
JP2012230791A JP2011097494A JP2011097494A JP2012230791A JP 2012230791 A JP2012230791 A JP 2012230791A JP 2011097494 A JP2011097494 A JP 2011097494A JP 2011097494 A JP2011097494 A JP 2011097494A JP 2012230791 A JP2012230791 A JP 2012230791A
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induced electromotive
electromotive voltage
potential difference
wiring
pair
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JP5664435B2 (en
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Shinya Sakaguchi
信也 坂口
Hidetsugu Izuhara
英嗣 伊豆原
Masanori Tabayashi
政則 田林
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Denso Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract

PROBLEM TO BE SOLVED: To provide a current measurement device which suppress reduction in the current measurement accuracy of a current measurement device attributable to an induced electromotive voltage.SOLUTION: The current measurement device comprises: a pair of electrodes 111 and 151 which are disposed on both sides of a measurement part collection plate; a measurement part having a resistive body electrically connecting the pair of electrodes 111 and 151; a pair of induced electromotive voltage measurement parts 103 which are disposed so as to sandwich the resistive body while being insulated from the pair of electrodes 111 and 151 and the resistive body; a potential difference detection voltage sensor 104 which detects a potential difference between the pair of electrodes 111 and 151; an inducted electromotive voltage detection voltage sensor 105 which detects a potential difference between the pair of induced electromotive voltage measurement parts 103; and a signal processing circuit. The signal processing circuit detects a current value flowing in the local portion of a cell by using a correction value derived from a potential difference detected by the potential difference detection voltage sensor 104 by correcting it with a detection value detected by the inducted electromotive voltage detection voltage sensor 105 and an electrical resistance value of the resistive body.

Description

本発明は、燃料電池の内部を流れる電流を測定する電流測定装置に関する。   The present invention relates to a current measuring device that measures a current flowing inside a fuel cell.

従来、電気エネルギを出力する複数のセルを積層配置して構成された燃料電池に適用され、この燃料電池のセルを流れる電流を測定する電流測定装置が種々提案されている。   2. Description of the Related Art Conventionally, various current measuring apparatuses that are applied to a fuel cell configured by stacking a plurality of cells that output electrical energy and measure the current flowing through the cells of the fuel cell have been proposed.

例えば、特許文献１には、電流測定対象となるセルに隣接して配置され、セルの局所部位に対応する部位に、一対の電極および抵抗体で構成される電流測定部が形成された板状部材、電流測定部における一対の電極間の電位差を検出する電圧センサ、電圧センサの検出値と抵抗体の抵抗値により導電部を流れる電流を検出する電流検出部等を備える電流測定装置が開示されている。   For example, Patent Document 1 discloses a plate-like shape in which a current measurement unit that is arranged adjacent to a cell that is a current measurement target and that includes a pair of electrodes and a resistor is formed in a portion corresponding to a local portion of the cell. Disclosed is a current measuring device including a member, a voltage sensor that detects a potential difference between a pair of electrodes in a current measuring unit, a current detecting unit that detects a current flowing through a conductive unit based on a detection value of the voltage sensor and a resistance value of a resistor, and the like. ing.

この特許文献１では、電流測定装置を燃料電池のインピーダンスを計測するための電流測定手段として用いる際に問題となる誘導起電圧の影響を低減するために、電流測定部の抵抗体を２つの抵抗部で構成すると共に、２つの抵抗部を流れる電流の流れ方向が反対方向となるようにしている。   In Patent Document 1, in order to reduce the influence of the induced electromotive voltage that becomes a problem when the current measuring device is used as a current measuring means for measuring the impedance of the fuel cell, the resistor of the current measuring unit is divided into two resistors. And the flow direction of the current flowing through the two resistance portions are opposite to each other.

特開２０１０−１０３０７１号公報JP 2010-103071 A

しかしながら、特許文献１の如く、抵抗体の各抵抗部を流れる電流を反対方向となるようにしても、燃料電池に印加する交流電流が高周波となると、電圧センサにて一対の電極間の電位差を検出するために各電極等から引き出された電位差検出用配線等が誘導起電圧の影響を受けてしまう。このため、電圧センサにて一対の電極間の電位差を精度よく検出することができず、電流測定装置における電流の測定精度が低下してしまうことがあった。   However, as in Patent Document 1, even if the current flowing through each resistance portion of the resistor is in the opposite direction, when the alternating current applied to the fuel cell becomes a high frequency, the voltage sensor causes a potential difference between the pair of electrodes. The potential difference detection wiring or the like drawn out from each electrode or the like for detection is affected by the induced electromotive voltage. For this reason, the potential difference between the pair of electrodes cannot be accurately detected by the voltage sensor, and the current measurement accuracy in the current measuring device may be lowered.

本発明は上記点に鑑みて、誘導起電圧の影響による電流測定装置における電流の測定精度の低下を抑制することを目的とする。   In view of the above points, an object of the present invention is to suppress a reduction in current measurement accuracy in a current measuring device due to the influence of an induced electromotive voltage.

上記目的を達成するため、請求項１に記載の発明では、酸化剤ガスと燃料ガスとを電気化学反応させて電気エネルギを出力する複数のセル（１０ａ）を積層配置して構成された燃料電池（１０）に適用されて、セル（１０ａ）を流れる電流を測定する電流測定装置であって、セル（１０ａ）に隣接して配置された板状部材（１００ａ）と、板状部材（１００ａ）の両面に配置された一対の電極（１１１、１５１）、予め定めた電気抵抗値を有し一対の電極（１１１、１５１）を電気的に接続する抵抗体（１３１）を有する電流測定部（１０２）と、一対の電極（１１１、１２１）および抵抗体（１３１）に対して絶縁された状態で、抵抗体（１３１）を狭持するように配置された一対の誘導起電圧測定部（１０３）と、一対の電極（１１１、１５１）における第１電極（１１１）と抵抗体（１３１）とを接続する第１接続部（１０１ｂ）、および抵抗体（１３１）と第２電極（１５１）とを接続する第２接続部（１０１ｃ）間の電位差を検出する電位差検出手段（１０４）と、一対の誘導起電圧測定部（１０３）間の電位差を検出する誘導起電圧検出手段（１０５）と、電位差検出手段（１０４）にて検出した検出電位差を、誘導起電圧検出手段（１０５）の検出値で補正した補正値、および抵抗体（１３１）の電気抵抗値を用いて、セル（１０ａ）の局所部位を流れる電流値を検出する電流値検出手段（５１）と、を備えることを特徴とする。   In order to achieve the above object, according to the first aspect of the present invention, a fuel cell constructed by stacking and arranging a plurality of cells (10a) that output an electric energy by electrochemical reaction of an oxidant gas and a fuel gas. A current measuring device that is applied to (10) and measures the current flowing through the cell (10a), the plate-like member (100a) disposed adjacent to the cell (10a), and the plate-like member (100a) Current measuring unit (102) having a pair of electrodes (111, 151) arranged on both sides of the electrode and a resistor (131) having a predetermined electric resistance value and electrically connecting the pair of electrodes (111, 151). ) And a pair of induced electromotive force measurement units (103) arranged to sandwich the resistor (131) in a state insulated from the pair of electrodes (111, 121) and the resistor (131) And a pair of electrodes (111, 51), the first connection part (101b) connecting the first electrode (111) and the resistor (131), and the second connection part (101c) connecting the resistor (131) and the second electrode (151). ) Detected by a potential difference detecting means (104) for detecting a potential difference between them, an induced electromotive voltage detecting means (105) for detecting a potential difference between a pair of induced electromotive voltage measuring sections (103), and a potential difference detecting means (104). Using the correction value obtained by correcting the detected potential difference with the detection value of the induced electromotive voltage detection means (105) and the electric resistance value of the resistor (131), the current value flowing through the local portion of the cell (10a) is detected. Current value detecting means (51).

これによると、抵抗体（１３１）を流れる電流により生ずる誘導起電圧を一対の誘導起電圧測定部（１０３）の電位差として検出し、検出した値を用いて電位差検出手段（１０４）にて検出した検出電位差を補正することで、一対の電極（１１１、１５１）間の電位差を精度よく検出することができる。従って、誘導起電圧の影響による電流測定装置における電流の測定精度の低下を抑制することができる。   According to this, the induced electromotive voltage generated by the current flowing through the resistor (131) is detected as a potential difference between the pair of induced electromotive voltage measuring units (103), and the detected value is detected by the potential difference detecting means (104). By correcting the detected potential difference, the potential difference between the pair of electrodes (111, 151) can be accurately detected. Therefore, it is possible to suppress a decrease in current measurement accuracy in the current measuring device due to the influence of the induced electromotive voltage.

具体的には、請求項２に記載のように、請求項１に記載の電流測定装置において、補正値として電位差検出手段（１０４）にて検出した検出電位差から誘導起電圧検出手段（１０５）の検出値を減算した値とすることができる。   Specifically, as described in claim 2, in the current measuring device according to claim 1, the induced electromotive voltage detecting means (105) is detected from the detected potential difference detected by the potential difference detecting means (104) as a correction value. The detection value can be subtracted.

また、請求項３に記載の発明では、請求項１または２に記載の電流測定装置において、電位差検出手段（１０４）は、第１電位差検出用配線（１３２）を介して第１接続部（１０１ｂ）に電気的に接続されると共に、第２電位差検出用配線（１３３）を介して第２接続部（１０１ｃ）に電気的に接続され、誘導起電圧検出手段（１０５）は、第１誘導起電圧検出用配線（１２２）を介して一対の誘導起電圧測定部（１０３）のうち、第１電極（１１１）側の第１誘導起電圧測定部（１２１）に電気的に接続されると共に、第２誘導起電圧検出用配線（１４２）を介して一対の誘導起電圧測定部（１０３）のうち、第２電極（１５１）側の第２誘導起電圧測定部（１４１）に電気的に接続され、板状部材（１００ａ）は、複数の基板（１１０〜１５０）が積層された積層基板で構成され、第１、第２電位差検出用配線（１３２、１３３）および第１、第２誘導起電圧検出用配線（１２２、１４２）は、複数の基板（１１０〜１５０）のうち、異なる基板上に形成されていることを特徴とする。   According to a third aspect of the present invention, in the current measuring device according to the first or second aspect, the potential difference detecting means (104) includes the first connecting portion (101b) via the first potential difference detecting wiring (132). ) And electrically connected to the second connection part (101c) via the second potential difference detection wiring (133), and the induced electromotive voltage detecting means (105) Among the pair of induced electromotive force measurement units (103) via the voltage detection wiring (122), the first electromotive voltage measurement unit (121) on the first electrode (111) side is electrically connected, Of the pair of induced electromotive voltage measurement units (103), the second induced electromotive voltage measurement unit (141) on the second electrode (151) side is electrically connected via the second induced electromotive voltage detection wiring (142). The plate-like member (100a) includes a plurality of substrates (110 to 110). 50), and the first and second potential difference detection wires (132, 133) and the first and second induced electromotive voltage detection wires (122, 142) are formed of a plurality of substrates (110). ˜150), they are formed on different substrates.

このように、各誘導起電圧検出用配線（１２２、１４２）および各電位差検出用配線（１３２、１３３）を異なる基板上に設ける構成とする場合、各誘導起電圧検出用配線（１２２、１４２）および各電位差検出用配線（１３２、１３３）同士が干渉しないので、基板における配線の設計自由度を向上させることができる。   Thus, when each induction electromotive voltage detection wiring (122, 142) and each potential difference detection wiring (132, 133) are provided on different substrates, each induction electromotive voltage detection wiring (122, 142) is provided. And since each potential difference detection wiring (132, 133) does not interfere with each other, the degree of freedom in designing the wiring on the substrate can be improved.

また、請求項４に記載の発明では、請求項３に記載の電流測定装置において、第１電位差検出用配線（１３２）および第１誘導起電圧検出用配線（１２２）は、複数の基板（１１０〜１５０）の積層方向から見たときに互いに重合する形状で構成され、第２電位差検出用配線（１３３）および第２誘導起電圧検出用配線（１４２）は、複数の基板（１１０〜１５０）の積層方向から見たときに互いに重合する形状で構成されていることを特徴とする。   According to a fourth aspect of the present invention, in the current measuring device according to the third aspect, the first potential difference detection wiring (132) and the first induced electromotive voltage detection wiring (122) are formed of a plurality of substrates (110 To 150), the second potential difference detection wiring (133) and the second induced electromotive voltage detection wiring (142) are formed of a plurality of substrates (110 to 150). It is characterized by being comprised in the shape which mutually superposes when seeing from the lamination direction.

このように、各電位差検出用配線（１３２、１３３）に対応する各誘導起電圧検出用配線（１２２、１４２）を同一形状とすることで、各電位差検出用配線（１３２、１３３）に生ずる誘導起電圧の影響と、各誘導起電圧検出用配線（１２２、１４２）に生ずる誘導起電圧の影響との差を縮小することができる。これにより、誘導起電圧検出手段（１０５）にて電位差検出用配線（１３２、１３３）に影響する誘導起電圧を精度よく検出することができる。   As described above, the induction voltage detection wirings (122, 142) corresponding to the respective potential difference detection wirings (132, 133) have the same shape, so that the induction generated in each potential difference detection wiring (132, 133). It is possible to reduce the difference between the influence of the electromotive voltage and the influence of the induced electromotive voltage generated in each of the induced electromotive voltage detection wirings (122, 142). As a result, the induced electromotive voltage that affects the potential difference detection wirings (132, 133) can be accurately detected by the induced electromotive voltage detection means (105).

また、請求項５に記載の発明では、請求項３または４に記載の電流測定装置において、第１電位差検出用配線（１３２）が形成された基板（１３０）、および第１誘導起電圧検出用配線（１２２）が形成された基板（１２０）は、互いに隣接して配置され、第２電位差検出用配線（１３３）が形成された基板（１３０）、および第２誘導起電圧検出用配線（１４２）が形成された基板（１４０）は、互いに隣接して配置されていることを特徴とする。   According to a fifth aspect of the present invention, in the current measuring device according to the third or fourth aspect, the substrate (130) on which the first potential difference detection wiring (132) is formed, and the first induced electromotive voltage detection The substrate (120) on which the wiring (122) is formed is disposed adjacent to each other, the substrate (130) on which the second potential difference detection wiring (133) is formed, and the second induced electromotive voltage detection wiring (142). ) Are formed adjacent to each other.

このように、各電位差検出用配線（１３２、１３３）が形成された基板を、対応する各誘導起電圧検出用配線（１２２、１４２）が形成された基板と隣接配置することで、各電位差検出用配線（１３２、１３３）に生ずる誘導起電圧の影響と、各誘導起電圧検出用配線（１２２、１４２）に生ずる誘導起電圧の影響との差をより効果的に縮小することができる。   Thus, each potential difference detection is performed by arranging the substrate on which each potential difference detection wiring (132, 133) is formed adjacent to the substrate on which each corresponding induced electromotive voltage detection wiring (122, 142) is formed. It is possible to more effectively reduce the difference between the influence of the induced electromotive voltage generated in the wirings (132, 133) and the influence of the induced electromotive voltage generated in each of the induced electromotive voltage detection wirings (122, 142).

また、請求項６に記載の発明では、請求項１または２に記載の電流測定装置において、電位差検出手段（１０４）は、第１電位差検出用配線（１３２）を介して第１接続部（１０１ｂ）に電気的に接続されると共に、第２電位差検出用配線（１３３）を介して第２接続部（１０１ｃ）に電気的に接続され、誘導起電圧検出手段（１０５）は、第１誘導起電圧検出用配線（１２２）を介して一対の誘導起電圧測定部（１０３）のうち、第１電極（１１１）側の第１誘導起電圧測定部（１２１）に電気的に接続されると共に、第２誘導起電圧検出用配線（１４２）を介して一対の誘導起電圧測定部（１０３）のうち、第２電極（１５１）側の第２誘導起電圧測定部（１４１）に電気的に接続され、板状部材（１００ａ）は、複数の基板（１１０、１３０、１５０）が積層された積層基板で構成され、第１誘導起電圧検出用配線（１２２）および第２誘導起電圧検出用配線（１４２）は、複数の基板（１１０、１３０、１５０）のうち、異なる基板上に形成され、第１電位差検出用配線（１３２）および第１誘導起電圧検出用配線（１２２）は、複数の基板（１１０、１３０、１５０）のうち、同一の基板（１１０）上に形成され、第２電位差検出用配線（１３３）および第２誘導起電圧検出用配線（１４２）は、複数の基板（１１０、１３０、１５０）のうち、同一の基板（１５０）上に形成されていることを特徴とする。   According to a sixth aspect of the present invention, in the current measuring device according to the first or second aspect, the potential difference detecting means (104) includes the first connecting portion (101b) via the first potential difference detecting wiring (132). ) And electrically connected to the second connection part (101c) via the second potential difference detection wiring (133), and the induced electromotive voltage detecting means (105) Among the pair of induced electromotive force measurement units (103) via the voltage detection wiring (122), the first electromotive voltage measurement unit (121) on the first electrode (111) side is electrically connected, Of the pair of induced electromotive voltage measurement units (103), the second induced electromotive voltage measurement unit (141) on the second electrode (151) side is electrically connected via the second induced electromotive voltage detection wiring (142). The plate-like member (100a) is composed of a plurality of substrates (110, 110, 30 and 150), and the first induced electromotive voltage detection wiring (122) and the second induced electromotive voltage detection wiring (142) are formed of a plurality of substrates (110, 130, 150). Among them, the first potential difference detection wiring (132) and the first induced electromotive voltage detection wiring (122) formed on different substrates are the same substrate (110) among the plurality of substrates (110, 130, 150). The second potential difference detection wiring (133) and the second induced electromotive voltage detection wiring (142) are formed on the same substrate (150) among the plurality of substrates (110, 130, 150). It is formed.

このように、各電位差検出用配線（１３２、１３３）に対応する各誘導起電圧検出用配線（１２２、１４２）を同一の基板上に配置することで、板状部材（１００ａ）の基板を増加させることなく、各電位差検出用配線（１３２、１３３）に生ずる誘導起電圧の影響と、各誘導起電圧検出用配線（１２２、１４２）に生ずる誘導起電圧の影響との差の縮小を図ることができる。   Thus, by arranging the induced electromotive voltage detection wirings (122, 142) corresponding to the potential difference detection wirings (132, 133) on the same substrate, the number of boards of the plate-like member (100a) is increased. Without reducing the difference between the induced electromotive voltage generated in each potential difference detection wiring (132, 133) and the induced electromotive voltage generated in each induced electromotive voltage detection wiring (122, 142). Can do.

また、請求項７に記載の発明では、請求項６に記載の電流測定装置において、第１電位差検出用配線（１３２）および第１誘導起電圧検出用配線（１２２）は、同一の基板（１１０）上において互いに並走する形状で構成され、第２電位差検出用配線（１３３）および第２誘導起電圧検出用配線（１４２）は、同一の基板（１５０）上において互いに並走する形状で構成されていることを特徴とする。   According to a seventh aspect of the present invention, in the current measuring device according to the sixth aspect, the first potential difference detection wiring (132) and the first induced electromotive voltage detection wiring (122) are formed on the same substrate (110 The second potential difference detection wiring (133) and the second induced electromotive voltage detection wiring (142) are configured to run parallel to each other on the same substrate (150). It is characterized by being.

このように、各電位差検出用配線（１３２、１３３）に対応する各誘導起電圧検出用配線（１２２、１４２）を同一基板上で並走する形状とすることで、各電位差検出用配線（１３２、１３３）に生ずる誘導起電圧の影響と、各誘導起電圧検出用配線（１２２、１４２）に生ずる誘導起電圧の影響との差をより効果的に縮小することができる。   Thus, each potential difference detection wiring (132) is formed in such a manner that the induced electromotive voltage detection wirings (122, 142) corresponding to the potential difference detection wirings (132, 133) run in parallel on the same substrate. 133) and the difference between the induced electromotive force generated in each of the induced electromotive voltage detection wires (122, 142) can be more effectively reduced.

また、請求項８に記載の発明では、請求項１に記載の電流測定装置において、第１、第２誘導起電圧検出用配線（１２２、１４２）および第１、第２電位差検出用配線（１３２、１３３）は、同一材料から構成されていることを特徴とする。   In the invention according to claim 8, in the current measuring device according to claim 1, the first and second induced electromotive voltage detection wirings (122, 142) and the first and second potential difference detection wirings (132) 133) is characterized by being composed of the same material.

このように、各電位差検出用配線（１３２、１３３）に対応する各誘導起電圧検出用配線（１２２、１４２）を同一材料で構成することで、各電位差検出用配線（１３２、１３３）に生ずる誘導起電圧の影響と、各誘導起電圧検出用配線（１２２、１４２）に生ずる誘導起電圧の影響との差をより効果的に縮小することができる。   As described above, the induced voltage detection wirings (122, 142) corresponding to the potential difference detection wirings (132, 133) are formed of the same material, so that they are generated in the potential difference detection wirings (132, 133). It is possible to more effectively reduce the difference between the influence of the induced electromotive voltage and the influence of the induced electromotive voltage generated in each of the induced electromotive voltage detection wirings (122, 142).

なお、この欄および特許請求の範囲で記載した各手段の括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係を示すものである。   In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

第１実施形態に係る燃料電池システムの全体構成図である。1 is an overall configuration diagram of a fuel cell system according to a first embodiment. 第１実施形態に係る燃料電池の外観斜視図である。1 is an external perspective view of a fuel cell according to a first embodiment. 第１実施形態に係る測定部集合板の斜視図である。It is a perspective view of the measurement part assembly board which concerns on 1st Embodiment. 第１実施形態に係る測定部の分解図である。It is an exploded view of the measurement part which concerns on 1st Embodiment. 第１実施形態に係る電流測定部および誘導起電圧測定部の詳細を説明する説明図である。It is explanatory drawing explaining the detail of the electric current measurement part and induced electromotive force measurement part which concern on 1st Embodiment. 第１実施形態に係る電流測定方法およびインピーダンス測定方法を説明するための説明図である。It is explanatory drawing for demonstrating the electric current measurement method and impedance measurement method which concern on 1st Embodiment. 第２実施形態に係る測定部の分解図である。It is an exploded view of the measurement part which concerns on 2nd Embodiment. 第２実施形態に係る各抵抗部の正面図である。It is a front view of each resistance part concerning a 2nd embodiment. 第２実施形態に係る第１誘導起電圧測定部の正面図である。It is a front view of the 1st induced electromotive force measurement part which concerns on 2nd Embodiment. 他の実施形態に係る電流値の算出方法を説明するための説明図である。It is explanatory drawing for demonstrating the calculation method of the electric current value which concerns on other embodiment.

以下、本発明の実施形態について図に基づいて説明する。なお、以下の各実施形態相互において、互いに同一もしくは均等である部分には、図中、同一符号を付してある。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

（第１実施形態）
本発明の第１実施形態について図１〜図６に基づいて説明する。図１は本実施形態に係る燃料電池システムを示す全体構成図であり、この燃料電池システムは電気自動車の一種である、いわゆる燃料電池車両に適用されており、図示しない電気負荷や２次電池等の電気機器に電力を供給するものである。 (First embodiment)
1st Embodiment of this invention is described based on FIGS. FIG. 1 is an overall configuration diagram showing a fuel cell system according to this embodiment. This fuel cell system is applied to a so-called fuel cell vehicle, which is a kind of electric vehicle, and includes an electric load, a secondary battery, etc. (not shown). It supplies power to the electrical equipment.

図１に示すように、本実施形態の燃料電池システムは、水素と酸素との電気化学反応を利用して電力を発生する燃料電池１０を備えている。この燃料電池１０は、図示しない電気負荷や２次電池等の電気機器に電力を供給するものである。因みに、電気自動車の場合、車両走行駆動源としての電動モータが電気負荷に相当している。   As shown in FIG. 1, the fuel cell system of this embodiment includes a fuel cell 10 that generates electric power by utilizing an electrochemical reaction between hydrogen and oxygen. The fuel cell 10 supplies electric power to an electric load (not shown) or an electric device such as a secondary battery. Incidentally, in the case of an electric vehicle, an electric motor as a vehicle driving source corresponds to an electric load.

本実施形態では燃料電池１０として固体高分子電解質型燃料電池を用いており、基本単位となる燃料電池セル１０ａ（以下、単にセル１０ａと略称する。）が複数個積層配置され、且つ電気的に直列接続されている。各セル１０ａでは、以下に示すように、水素と酸素とを電気化学反応させて、電気エネルギを出力する。   In this embodiment, a solid polymer electrolyte fuel cell is used as the fuel cell 10, and a plurality of fuel cell cells 10a (hereinafter simply referred to as cells 10a) serving as a basic unit are arranged in a stacked manner and electrically. They are connected in series. In each cell 10a, as shown below, hydrogen and oxygen are electrochemically reacted to output electric energy.

（負極側）Ｈ２→２Ｈ＋＋２ｅ−
（正極側）２Ｈ＋＋１／２Ｏ２＋２ｅ−→Ｈ２Ｏ
燃料電池１０から出力される電気エネルギは、燃料電池１０全体として出力される出力電圧を検出する電圧センサ１１、および燃料電池１０全体として出力される出力電流を検出する電流センサ１２によって計測される。これら電圧センサ１１および電流センサ１２の検出信号は、後述する制御部５０に入力される。 (Negative electrode side) H 2 → 2H + + 2e −
(Positive electrode side) 2H + + 1 / 2O 2 + 2e − → H 2 O
The electric energy output from the fuel cell 10 is measured by a voltage sensor 11 that detects an output voltage that is output as the entire fuel cell 10 and a current sensor 12 that detects an output current output as the entire fuel cell 10. Detection signals of the voltage sensor 11 and the current sensor 12 are input to the control unit 50 described later.

また、積層されたセル１０ａの間には、燃料電池１０のセル面内の電流分布を測定するための電流測定装置１００が設けられている。電流測定装置１００は板状部材である測定部集合板１００ａを有して構成されている。本実施形態の電流測定装置１００の測定部集合板１００ａは、隣り合うセル１０ａに挟まれて配置されており、隣り合うセル１０ａと電気的に直列接続されている。電流測定装置１００の検出信号は、後述の信号処理回路５１を介して制御部５０に入力される。電流測定装置１００の詳細については後述する。   Further, a current measuring device 100 for measuring a current distribution in the cell plane of the fuel cell 10 is provided between the stacked cells 10a. The current measuring apparatus 100 is configured to include a measuring unit assembly plate 100a that is a plate-like member. The measurement unit assembly plate 100a of the current measurement apparatus 100 of the present embodiment is disposed between adjacent cells 10a and is electrically connected in series with the adjacent cells 10a. A detection signal of the current measuring device 100 is input to the control unit 50 via a signal processing circuit 51 described later. Details of the current measuring apparatus 100 will be described later.

なお、図示しないが、燃料電池１０には、燃料電池１０の出力電流に任意の周波数で正弦波を重畳させる正弦波印加手段としての正弦波発振器が設けられている。これにより、電圧センサ１１、電流測定装置１００等の出力信号に正弦波が重畳される。   Although not shown, the fuel cell 10 is provided with a sine wave oscillator as sine wave applying means for superimposing a sine wave on the output current of the fuel cell 10 at an arbitrary frequency. Thereby, a sine wave is superimposed on output signals of the voltage sensor 11, the current measuring device 100, and the like.

燃料電池システムには、燃料電池１０の空気極側（正極側）に酸素を主成分とする酸化剤ガス（空気）を供給するための空気流路２０と、燃料電池１０の水素極側（負極側）に水素を主成分とする燃料ガス（水素）を供給するための水素流路３０が設けられている。ここで、空気流路２０における燃料電池１０より上流側を空気供給流路２０ａといい、下流側を空気排出流路２０ｂという。また、水素流路３０における燃料電池１０より上流側を水素供給流路３０ａといい、下流側を水素排出流路３０ｂという。   The fuel cell system includes an air flow path 20 for supplying an oxidant gas (air) containing oxygen as a main component to the air electrode side (positive electrode side) of the fuel cell 10, and the hydrogen electrode side (negative electrode) of the fuel cell 10. A hydrogen channel 30 for supplying a fuel gas (hydrogen) containing hydrogen as a main component is provided on the side). Here, the upstream side of the fuel cell 10 in the air channel 20 is referred to as an air supply channel 20a, and the downstream side is referred to as an air discharge channel 20b. Further, the upstream side of the fuel cell 10 in the hydrogen channel 30 is referred to as a hydrogen supply channel 30a, and the downstream side is referred to as a hydrogen discharge channel 30b.

空気供給流路２０ａの最上流部には、大気中から吸入した空気を燃料電池１０に圧送するための空気ポンプ２１が設けられ、空気供給流路２０ａにおける空気ポンプ２１と燃料電池１０との間には、空気への加湿を行う加湿器２２が設けられている。また、空気排出流路２０ｂには、燃料電池１０内の空気の圧力を調整するための空気調圧弁２３が設けられている。   An air pump 21 for pressure-feeding air sucked from the atmosphere to the fuel cell 10 is provided at the most upstream portion of the air supply channel 20a, and between the air pump 21 and the fuel cell 10 in the air supply channel 20a. Is provided with a humidifier 22 for humidifying the air. The air discharge passage 20b is provided with an air pressure regulating valve 23 for adjusting the pressure of air in the fuel cell 10.

水素供給流路３０ａの最上流部には、水素が充填された高圧水素タンク３１が設けられ、水素供給流路３０ａにおける高圧水素タンク３１と燃料電池１０との間には、燃料電池１０に供給される水素の圧力を調整するための水素調圧弁３２が設けられている。   A high-pressure hydrogen tank 31 filled with hydrogen is provided at the most upstream portion of the hydrogen supply flow path 30a, and the fuel cell 10 is supplied between the high-pressure hydrogen tank 31 and the fuel cell 10 in the hydrogen supply flow path 30a. A hydrogen pressure regulating valve 32 for adjusting the pressure of the generated hydrogen is provided.

水素排出流路３０ｂには、水素供給流路３０ａにおける水素調圧弁３２の下流側に接続されて閉ループを構成する水素循環流路３０ｃが分岐して設けられており、これにより水素流路３０内で水素を循環させて、未反応の水素を燃料電池１０に再供給するようにしている。そして、水素循環流路３０ｃには、水素流路３０内で水素を循環させるための水素ポンプ３３が設けられている。   The hydrogen discharge passage 30b is provided with a branching hydrogen circulation passage 30c that is connected to the downstream side of the hydrogen pressure regulating valve 32 in the hydrogen supply passage 30a and forms a closed loop. Then, hydrogen is circulated so that unreacted hydrogen is supplied to the fuel cell 10 again. The hydrogen circulation channel 30 c is provided with a hydrogen pump 33 for circulating hydrogen in the hydrogen channel 30.

燃料電池１０は発電効率確保のために運転中一定温度（例えば８０℃程度）に維持する必要がある。このため、燃料電池１０を冷却するための冷却システムが設けられている。冷却システムには、燃料電池１０に冷却水（熱媒体）を循環させる冷却水経路４０、冷却水を循環させるウォータポンプ４１、ファン４２を備えたラジエータ（放熱器）４３が設けられている。   The fuel cell 10 needs to be maintained at a constant temperature (for example, about 80 ° C.) during operation to ensure power generation efficiency. For this reason, a cooling system for cooling the fuel cell 10 is provided. The cooling system is provided with a cooling water path 40 that circulates the cooling water (heat medium) in the fuel cell 10, a water pump 41 that circulates the cooling water, and a radiator (radiator) 43 that includes a fan 42.

冷却水経路４０には、ラジエータ４３を迂回して冷却水を流すためのバイパス経路４４が設けられている。冷却水経路４０とバイパス経路４４との合流点には、バイパス経路４４に流れる冷却水流量を調整するための流路切替弁４５が設けられている。また、冷却水経路４０における燃料電池１０の出口側付近には、燃料電池１０から流出した冷却水の温度を検出する温度検出手段としての温度センサ４６が設けられている。この温度センサ４６により冷却水温度を検出することで、燃料電池１０の温度を間接的に検出することができる。   The cooling water path 40 is provided with a bypass path 44 for bypassing the radiator 43 and flowing the cooling water. A flow path switching valve 45 for adjusting the flow rate of the cooling water flowing through the bypass path 44 is provided at the junction of the cooling water path 40 and the bypass path 44. Further, a temperature sensor 46 is provided as a temperature detecting means for detecting the temperature of the cooling water flowing out from the fuel cell 10 near the outlet side of the fuel cell 10 in the cooling water path 40. By detecting the cooling water temperature by the temperature sensor 46, the temperature of the fuel cell 10 can be indirectly detected.

燃料電池システムには、各種制御を行う制御部（ＥＣＵ）５０が設けられている。制御部５０は、ＣＰＵ、ＲＯＭ、ＲＡＭ等からなる周知のマイクロコンピュータとその周辺回路にて構成されている。そして、制御部５０には、電圧センサ１１、電流センサ１２、および温度センサ４６からの検出信号等の他に、後述する電流測定装置１００の信号処理回路５１から出力される検出信号が入力される。   The fuel cell system is provided with a control unit (ECU) 50 that performs various controls. The control unit 50 is composed of a well-known microcomputer comprising a CPU, ROM, RAM, etc. and its peripheral circuits. In addition to the detection signals from the voltage sensor 11, the current sensor 12, and the temperature sensor 46, the control unit 50 receives a detection signal output from a signal processing circuit 51 of the current measuring device 100 described later. .

本実施形態の制御部５０では、電流測定装置１００の信号処理回路５１からの検出信号（電流値）および電圧センサ１１からの検出信号を用いて、セル１０ａの面内におけるインピーダンスの分布を測定する。   In the control unit 50 of the present embodiment, the distribution of impedance in the plane of the cell 10a is measured using the detection signal (current value) from the signal processing circuit 51 of the current measuring device 100 and the detection signal from the voltage sensor 11. .

また、制御部５０は、演算結果に基づいて、空気ポンプ２１、加湿器２２、空気調圧弁２３、水素調圧弁３２、水素ポンプ３３、ウォータポンプ４１、流路切替弁４５等に制御信号を出力する。   Further, the control unit 50 outputs a control signal to the air pump 21, the humidifier 22, the air pressure regulating valve 23, the hydrogen pressure regulating valve 32, the hydrogen pump 33, the water pump 41, the flow path switching valve 45, etc. based on the calculation result. To do.

次に、本実施形態の電流測定装置１００の詳細について説明する。電流測定装置１００は、電流測定部１０２および一対の誘導起電圧測定部１０３からなる複数の測定部１０１が板状部材として一体的に構成された測定部集合板１００ａ、各測定部１０１の所定部位間の電位差を検出する電位差検出用電圧センサ１０４、各誘導起電圧測定部１０３の所定部位間の電位差を検出する誘導起電圧検出用電圧センサ１０５、およびセル１０ａの面内のうち各測定部１０１配置箇所に対応する局所部位の電流を検出する信号処理回路５１を備えている。   Next, details of the current measuring apparatus 100 of the present embodiment will be described. The current measuring apparatus 100 includes a measuring unit aggregate plate 100a in which a plurality of measuring units 101 each including a current measuring unit 102 and a pair of induced electromotive voltage measuring units 103 are integrally configured as a plate-like member, and predetermined portions of each measuring unit 101 A voltage sensor 104 for detecting a potential difference between them, a voltage sensor 105 for detecting an induced electromotive voltage detecting a potential difference between predetermined portions of each induced electromotive voltage measuring unit 103, and each measuring unit 101 in the plane of the cell 10a. A signal processing circuit 51 is provided for detecting a current at a local site corresponding to the arrangement location.

まず、測定部集合板１００ａについて図２、図３に基づいて説明する。図２は、燃料電池１０の外観斜視図であり、図３は、測定部集合板１００ａの斜視図である。図２に示すように、本実施形態の測定部集合板１００ａは、複数枚設けられており、それぞれ隣合うセル１０ａの間に配置されている。   First, the measurement part assembly board 100a is demonstrated based on FIG. 2, FIG. FIG. 2 is an external perspective view of the fuel cell 10, and FIG. 3 is a perspective view of the measurement unit assembly plate 100a. As shown in FIG. 2, a plurality of measurement unit assembly plates 100a of the present embodiment are provided, and are arranged between adjacent cells 10a.

さらに、図３に示すように、測定部集合板１００ａは、配線パターンが形成（プリント）された複数のプリント基板１１０〜１５０を積層した積層基板として構成されている。本実施形態の電流測定装置１００は、第１〜第５プリント基板１１０〜１５０の５枚のプリント基板が積層されて構成されている。これら各プリント基板１１０〜１５０は、絶縁性接着剤（図示略）を介在させてホットプレスにより一体化されている。   Furthermore, as shown in FIG. 3, the measurement unit assembly board 100 a is configured as a laminated board in which a plurality of printed boards 110 to 150 on which wiring patterns are formed (printed). The current measuring apparatus 100 according to the present embodiment is configured by stacking five printed boards, first to fifth printed boards 110 to 150. These printed circuit boards 110 to 150 are integrated by hot pressing with an insulating adhesive (not shown) interposed therebetween.

各プリント基板１１０〜１５０としては、一般的なガラスエポキシ基板を用いることができる。なお、各プリント基板１１０〜１５０には、その周縁部における対向する２辺（図３における左右両辺）付近には、それぞれ積層基板の表裏を貫通する貫通穴が３つ形成されている。これらの貫通穴は、セル１０ａを積層した際に、空気、水素、冷却水がそれぞれ通過させるためのマニホールドとして機能する。   As each printed board 110-150, a general glass epoxy board can be used. Each of the printed boards 110 to 150 is formed with three through holes that penetrate the front and back of the multilayer board in the vicinity of two opposing sides (left and right sides in FIG. 3) at the periphery. These through holes function as manifolds through which air, hydrogen, and cooling water pass when the cells 10a are stacked.

さらに、両側の各マニホールドの間には、複数の測定部１０１が直交する二方向にマトリクス状（格子状）に配置されている。より具体的には、本実施形態の測定部集合板１００ａには、図３に示すように、紙面上下方向に６個、紙面左右方向に７個のマトリクス状に測定部１０１が配置されている。   Furthermore, between the manifolds on both sides, a plurality of measuring units 101 are arranged in a matrix (lattice) in two orthogonal directions. More specifically, as shown in FIG. 3, the measurement unit 101 is arranged in a matrix of six in the vertical direction on the paper surface and seven in the horizontal direction on the paper surface. .

つまり、本実施形態では、測定部１０１が、同一の隣合うセル１０ａに複数配置されている。これにより、複数の測定部１０１が測定部集合板１００ａの板面の全体に渡って配置されることになるので、本実施形態の電流測定装置１００では、セル１０ａの面内における電流密度分布を測定することができる。   That is, in this embodiment, a plurality of measuring units 101 are arranged in the same adjacent cell 10a. As a result, the plurality of measurement units 101 are arranged over the entire plate surface of the measurement unit assembly plate 100a. Therefore, in the current measurement device 100 of this embodiment, the current density distribution in the plane of the cell 10a is determined. Can be measured.

次に、測定部１０１の詳細について図４、図５に基づいて説明する。図４は、本実施形態に係る測定部１０１の分解図であり、図５は、本実施形態に係る電流測定部１０２および一対の誘導起電圧測定部１０３の詳細を説明する説明図である。なお、図５は、電流測定部１０２の第１電極１１１、第２電極１５１、抵抗体１３１、一対の誘導起電圧測定部１０３の正面図を示している。   Next, details of the measurement unit 101 will be described with reference to FIGS. 4 and 5. FIG. 4 is an exploded view of the measurement unit 101 according to the present embodiment, and FIG. 5 is an explanatory diagram illustrating details of the current measurement unit 102 and the pair of induced electromotive voltage measurement units 103 according to the present embodiment. 5 shows a front view of the first electrode 111, the second electrode 151, the resistor 131, and the pair of induced electromotive force measurement units 103 of the current measurement unit 102.

図４に示すように、本実施形態の測定部１０１は、電流測定部１０２および一対の誘導起電圧測定部１０３を有して構成されている。   As shown in FIG. 4, the measurement unit 101 of this embodiment includes a current measurement unit 102 and a pair of induced electromotive voltage measurement units 103.

電流測定部１０２は、隣合うセル１０ａのうち一方のセル１０ａに電気的に接触する第１電極１１１、隣合うセル１０ａのうち他方のセル１０ａに電気的に接触する第２電極１５１、および第１電極１１１と第２電極１５１とを電気的に接続すると共に予め定められた電気抵抗値を有する抵抗体１３１を有して構成されている。なお、第１電極１１１、および第２電極１５１は、一対の電極として構成されて測定部集合板１００ａの両面に配置されている。   The current measuring unit 102 includes a first electrode 111 that is in electrical contact with one cell 10a of the adjacent cells 10a, a second electrode 151 that is in electrical contact with the other cell 10a of the adjacent cells 10a, and a first electrode The first electrode 111 and the second electrode 151 are electrically connected and have a resistor 131 having a predetermined electric resistance value. In addition, the 1st electrode 111 and the 2nd electrode 151 are comprised as a pair of electrode, and are arrange | positioned at both surfaces of the measurement part assembly board 100a.

具体的には、第１電極１１１は、第１プリント基板１１０における一方のセル１０ａに対向する面（図４の紙面手前側）に配置され、第２電極１５１は、第５プリント基板１５０における他方のセル１０ａに対向する面（図４の紙面奥側）に配置されている。   Specifically, the first electrode 111 is disposed on the surface (front side in FIG. 4) of the first printed circuit board 110 facing the one cell 10a, and the second electrode 151 is disposed on the other surface of the fifth printed circuit board 150. It is arrange | positioned in the surface (paper surface back | inner side of FIG. 4) which opposes the cell 10a.

抵抗体１３１は、第１電極１１１に電気的に接続される板状の第１抵抗部１３１ａ、および第２電極１５１に電気的に接続される板状の第２抵抗部１３１ｂを有して構成されている。   The resistor 131 includes a plate-like first resistor 131 a that is electrically connected to the first electrode 111 and a plate-like second resistor 131 b that is electrically connected to the second electrode 151. Has been.

具体的には、第１抵抗部１３１ａは、第３プリント基板１３０における第２プリント基板１２０に対向する面（図４の紙面手前側）に配置され、第２抵抗部１３１ｂは、第４プリント基板１４０に対向する面（図４の紙面奥側）に配置されている。つまり、第１抵抗部１３１ａおよび第２抵抗部１３１ｂは、第３プリント基板１３０の両板面に配置されている。   Specifically, the first resistance portion 131a is disposed on the surface of the third printed circuit board 130 that faces the second printed circuit board 120 (the front side in FIG. 4), and the second resistance section 131b is formed on the fourth printed circuit board. It is arranged on the surface facing 140 (the back side in FIG. 4). That is, the first resistance part 131 a and the second resistance part 131 b are disposed on both plate surfaces of the third printed circuit board 130.

さらに、第３プリント基板１３０には、電流を測定するための電位差検出用配線１３２、１３３が配置されており、第３プリント基板１３０の一辺には、電位差検出用配線１３２、１３３が接続されたコネクタ（図示略）が設けられている。つまり、本実施形態では、抵抗体１３１と電位差検出用配線１３２、１３３とを同一のプリント基板上に配置する構成としている。   Furthermore, potential difference detection wirings 132 and 133 for measuring current are arranged on the third printed circuit board 130, and potential difference detection wirings 132 and 133 are connected to one side of the third printed circuit board 130. A connector (not shown) is provided. That is, in the present embodiment, the resistor 131 and the potential difference detection wirings 132 and 133 are arranged on the same printed board.

一対の電極１１１、１５１、各抵抗部１３１ａ、１３１ｂ、および電位差検出用配線１３２、１３３それぞれは、金属箔にて構成されており、各抵抗部１３１ａ、１３１ｂは、一対の電極１１１、１５１よりも抵抗値の高い材料で構成されている。例えば、一対の電極１１１、１５１、および電位差検出用配線１３２、１３３は銅箔で構成することができ、各抵抗部１３１ａ、１３１ｂはニッケル箔で構成することができる。   Each of the pair of electrodes 111 and 151, each of the resistance portions 131a and 131b, and the potential difference detection wirings 132 and 133 is formed of a metal foil, and each of the resistance portions 131a and 131b is more than the pair of electrodes 111 and 151. It is made of a material with high resistance. For example, the pair of electrodes 111 and 151 and the potential difference detection wirings 132 and 133 can be made of copper foil, and the resistance portions 131a and 131b can be made of nickel foil.

また、一対の誘導起電圧測定部１０３は、電流測定部１０２における一対の電極１１１、１５１、および抵抗体１３１に対して絶縁された状態で、抵抗体１３１を狭持するように配置されている。なお、一対の誘導起電圧測定部１０３は、絶縁性接着剤（図示略）や逃がし部１０６等により一対の電極１１１、１５１、および抵抗体１３１から絶縁されている。   In addition, the pair of induced electromotive voltage measurement units 103 is disposed so as to sandwich the resistor 131 while being insulated from the pair of electrodes 111 and 151 and the resistor 131 in the current measurement unit 102. . The pair of induced electromotive force measurement units 103 is insulated from the pair of electrodes 111 and 151 and the resistor 131 by an insulating adhesive (not shown), the relief unit 106, and the like.

具体的には、一対の誘導起電圧測定部１０３のうち、第１電極側の第１誘導起電圧測定部１２１は、第２プリント基板１２０における第３プリント基板１３０と対向する面（図４の紙面奥側）に配置され、第２電極側の第２誘導起電圧測定部１４１は、第４プリント基板１４０における第３プリント基板１３０と対向する面（図４の紙面手前側）に配置されている。なお、第２プリント基板１２０と第３プリント基板１３０とを接着する絶縁性接着剤（図示略）、および第４プリント基板１４０と第３プリント基板１３０とを接着する絶縁性接着剤（図示略）によって、抵抗体１３１と一対の誘導起電圧測定部１０３とが絶縁されている。   Specifically, of the pair of induced electromotive voltage measuring units 103, the first induced electromotive voltage measuring unit 121 on the first electrode side is a surface of the second printed circuit board 120 that faces the third printed circuit board 130 (see FIG. 4). The second induced electromotive voltage measuring unit 141 on the second electrode side is disposed on the surface facing the third printed circuit board 130 in the fourth printed circuit board 140 (the front side in FIG. 4). Yes. Note that an insulating adhesive (not shown) for bonding the second printed board 120 and the third printed board 130 and an insulating adhesive (not shown) for bonding the fourth printed board 140 and the third printed board 130 are used. Thus, the resistor 131 and the pair of induced electromotive voltage measuring units 103 are insulated.

さらに、第２、第４プリント基板１２０、１４０それぞれには、各誘導起電圧測定部１０３の電位を測定するための誘導起電圧検出用配線１２２、１４２が配置されており、第２、第４プリント基板１２０、１４０の一辺には、誘導起電圧検出用配線１２２、１４２が接続されたコネクタ（図示略）が設けられている。つまり、本実施形態では、抵抗体１３１と電位差検出用配線１３２、１３３との配置構成と同様に、一対の誘導起電圧測定部１２１、１４１と誘導起電圧検出用配線１２２、１４２とを同一のプリント基板上に配置する構成としている。   Furthermore, the second and fourth printed circuit boards 120 and 140 are respectively provided with induced electromotive voltage detection wirings 122 and 142 for measuring the potential of each induced electromotive voltage measurement unit 103. A connector (not shown) to which induced electromotive voltage detection wirings 122 and 142 are connected is provided on one side of the printed circuit boards 120 and 140. That is, in the present embodiment, the pair of induced electromotive voltage measurement units 121 and 141 and the induced electromotive voltage detection wirings 122 and 142 are identical to each other, similarly to the arrangement configuration of the resistor 131 and the potential difference detection wirings 132 and 133. The arrangement is on a printed circuit board.

なお、第１、第２誘導起電圧測定部１２１、１４１、および誘導起電圧検出用配線１２２、１４２それぞれは、金属箔にて構成されている。例えば、第１、第２誘導起電圧測定部１２１、１４１は、各抵抗部１３１ａ、１３１ｂと同様の材料（ニッケル箔）で構成することができ、誘導起電圧検出用配線１２２、１４２は、一対の電極１１１、１５１、および電位差検出用配線１３２、１３３と同様の材料（銅箔）で構成することができる。   Each of the first and second induced electromotive voltage measurement units 121 and 141 and the induced electromotive voltage detection wirings 122 and 142 is made of a metal foil. For example, the first and second induced electromotive force measurement units 121 and 141 can be made of the same material (nickel foil) as the resistor portions 131a and 131b, and the induced electromotive voltage detection wirings 122 and 142 include a pair. The electrodes 111 and 151 and the potential difference detection wirings 132 and 133 can be made of the same material (copper foil).

ここで、各プリント基板１１０〜１５０には、複数の丸穴形状のスルーホール１０１ａが設けられ、第１〜第３プリント基板１１０〜１３０、および第３〜第５プリント基板１３０〜１５０には、複数の丸穴形状の第１、第２ビアホール１０１ｂ、１０１ｃが設けられている。   Here, each of the printed boards 110 to 150 is provided with a plurality of through holes 101a having a round hole shape, and the first to third printed boards 110 to 130 and the third to fifth printed boards 130 to 150 include: A plurality of round hole-shaped first and second via holes 101b and 101c are provided.

これらスルーホール１０１ａ、第１、第２ビアホール１０１ｂ、１０１ｃの内部には、銅等の導電体が設けられている。そして、スルーホール１０１ａを介して、第１抵抗部１３１ａおよび第２抵抗部１３１ｂが接続されている。なお、スルーホール１０１ａには、図５に示すように、長手方向の両端面に逃がし部１０７が形成されており、当該逃がし部１０７によって、第１電極１１１および第２電極１５１に対して絶縁されている。   Inside these through holes 101a and the first and second via holes 101b and 101c, a conductor such as copper is provided. And the 1st resistance part 131a and the 2nd resistance part 131b are connected via the through hole 101a. As shown in FIG. 5, the through holes 101 a have relief portions 107 formed on both end faces in the longitudinal direction, and are insulated from the first electrode 111 and the second electrode 151 by the relief portions 107. ing.

また、第１ビアホール１０１ｂを介して、第１電極１１１、第１抵抗部１３１ａ、および第１電位差検出用配線１３２が接続されると共に、第２ビアホール１０１ｃを介して第２電極１５１、第２抵抗部１３１ｂ、および第２電位差検出用配線１３３が接続されている。従って、第１、第２ビアホール１０１ｂ、１０１ｃは、それぞれ本実施形態の第１、第２接続部を構成している。なお、第１、第２ビアホール１０１ｂ、１０１ｃは、測定部集合板１００ａの積層方向から見たときに、重合するように設けられており、絶縁部材（図示略）によって内部の導電体が絶縁されている。   The first electrode 111, the first resistor 131a, and the first potential difference detection wiring 132 are connected through the first via hole 101b, and the second electrode 151 and the second resistor are connected through the second via hole 101c. The part 131b and the second potential difference detection wiring 133 are connected. Accordingly, the first and second via holes 101b and 101c constitute the first and second connection portions of the present embodiment, respectively. The first and second via holes 101b and 101c are provided so as to overlap when viewed from the stacking direction of the measurement unit assembly plate 100a, and the internal conductor is insulated by an insulating member (not shown). ing.

また、第１電極１１１は、第１ビアホール１０１ｂを介して第１抵抗部１３１ａの一端側に接続され、第２電極１５１は、第２ビアホール１０１ｃを介して第２抵抗部１３１ｂの一端側に接続されている。また、第１抵抗部１３１ａの他端側は、スルーホール１０１ａを介して第２抵抗部１３１ｂの他端側に接続されている。   The first electrode 111 is connected to one end side of the first resistance part 131a via the first via hole 101b, and the second electrode 151 is connected to one end side of the second resistance part 131b via the second via hole 101c. Has been. Further, the other end side of the first resistance portion 131a is connected to the other end side of the second resistance portion 131b through the through hole 101a.

このため、抵抗体１３１では、図４に示すように、第１抵抗部１３１ａの一端側から他端側（下方から上方）へ電流が流れ、逆に第２抵抗部１３１ｂの他端側から一端側（上方から下方）へ電流が流れることとなる。つまり、第１電極１１１側に配置された第１抵抗部１３１ａを流れる電流の流れ方向と、第２電極１５１側に配置された第２抵抗部１３１ｂを流れる電流の流れ方向とが、互いに反対方向となるようになっている。換言すれば、第１、第２抵抗部１３１ａ、１３１ｂ、およびスルーホール１０１ａには、測定部集合板１００ａの積層方向断面から見たときに、Ｕ字状に曲折して電流が流れる。これにより、第１抵抗部１３１ａを流れる電流による磁界と第２抵抗部１３１ｂを流れる電流による磁界とを打ち消すことができる。   For this reason, in the resistor 131, as shown in FIG. 4, a current flows from one end side of the first resistor portion 131a to the other end side (from the lower side to the upper side), and conversely, one end from the other end side of the second resistor portion 131b. Current flows from the side (from the top to the bottom). That is, the flow direction of the current flowing through the first resistance portion 131a disposed on the first electrode 111 side and the flow direction of the current flowing through the second resistance portion 131b disposed on the second electrode 151 side are opposite to each other. It comes to become. In other words, a current flows through the first and second resistance portions 131a and 131b and the through hole 101a in a U-shape when viewed from the cross-section in the stacking direction of the measurement unit assembly plate 100a. Thereby, the magnetic field due to the current flowing through the first resistance portion 131a and the magnetic field due to the current flowing through the second resistance portion 131b can be canceled out.

そして、第１接続部である第１ビアホール１０１ｂおよび第２接続部である第２ビアホール１０１ｃには、図５に示すように、それぞれ第１、第２電位差検出用配線１３２、１３３を介して、電位差検出用電圧センサ１０４が接続されている。なお、第１電位差検出用配線１３２を介して第１ビアホール１０１ｂと電位差検出用電圧センサ１０４とが接続され、第２電位差検出用配線１３３を介して第２ビアホール１０１ｃと電位差検出用電圧センサ１０４とが接続されている。   Then, as shown in FIG. 5, the first via hole 101b as the first connection portion and the second via hole 101c as the second connection portion are respectively connected via the first and second potential difference detection wirings 132 and 133, respectively. A voltage sensor 104 for detecting a potential difference is connected. The first via hole 101b and the potential difference detection voltage sensor 104 are connected via the first potential difference detection wiring 132, and the second via hole 101c and the potential difference detection voltage sensor 104 are connected via the second potential difference detection wiring 133. Is connected.

電位差検出用電圧センサ１０４は、第１ビアホール１０１ｂと第２ビアホール１０１ｃとの２点間の電位差（第１接続部および第２接続部間）を検出する電位差検出手段を構成している。そして、電位差検出用電圧センサ１０４の検出信号は、信号処理回路５１へ出力される。   The potential difference detecting voltage sensor 104 constitutes a potential difference detecting means for detecting a potential difference (between the first connection portion and the second connection portion) between two points of the first via hole 101b and the second via hole 101c. Then, a detection signal of the potential difference detection voltage sensor 104 is output to the signal processing circuit 51.

また、一対の誘導起電圧測定部１２１、１４１には、それぞれ誘導起電圧検出用配線１２２、１４２を介して誘導起電圧測定用電圧センサ１０５が接続されている。なお、第１誘導起電圧検出用配線１２２を介して第１誘導起電圧測定部１２１と誘導起電圧検出用電圧センサ１０５とが接続され、第２誘導起電圧検出用配線１４２を介して第２誘導起電圧測定部１４１と誘導起電圧検出用電圧センサ１０５とが接続されている。   In addition, a voltage sensor 105 for measuring the induced electromotive voltage is connected to the pair of induced electromotive voltage measuring units 121 and 141 via the induced electromotive voltage detecting wires 122 and 142, respectively. The first induced electromotive voltage measurement unit 121 and the induced electromotive voltage detection voltage sensor 105 are connected via the first induced electromotive voltage detection wiring 122, and the second induced electromotive voltage detection wiring 142 is connected to the second induced electromotive voltage detection wiring 142. The induced electromotive voltage measuring unit 141 and the induced electromotive voltage detecting voltage sensor 105 are connected.

誘導起電圧検出用電圧センサ１０５は、抵抗体１３１に交流電流が流れる際の磁界の変化によって第１、第２電位差検出用配線１３２、１３３に生ずる誘導起電圧を、一対の誘導起電圧測定部間の電位差として検出する誘導起電圧検出手段を構成している。そして、誘導起電圧検出用電圧センサ１０５の検出信号は、信号処理回路５１へ出力される。   The induced electromotive voltage detection voltage sensor 105 is configured to generate an induced electromotive voltage generated in the first and second potential difference detection wires 132 and 133 due to a change in magnetic field when an alternating current flows through the resistor 131. Inductive electromotive voltage detection means for detecting a potential difference between them is configured. The detection signal of the induced electromotive voltage detection voltage sensor 105 is output to the signal processing circuit 51.

ここで、本実施形態では、第１誘導起電圧検出用配線１２２を、第１電位差検出用配線１３２が配置された第３プリント基板１３０に隣接する第２プリント基板１２０に配置し、第２誘導起電圧検出用配線１４２を第２電位差検出用配線１３３が配置された第３プリント基板１３０に隣接する第４プリント基板１４０に配置している。つまり、各誘導起電圧検出用配線１２２、１４２を各電位差検出用配線１３２、１３３が配置されたプリント基板と異なるプリント基板（隣接するプリント基板）に配置するようにしている。   Here, in the present embodiment, the first induced electromotive voltage detection wiring 122 is disposed on the second printed circuit board 120 adjacent to the third printed circuit board 130 on which the first potential difference detection wiring 132 is disposed, so that the second induction is performed. The electromotive voltage detection wiring 142 is disposed on the fourth printed circuit board 140 adjacent to the third printed circuit board 130 on which the second potential difference detection wiring 133 is disposed. That is, each of the induced electromotive voltage detection wirings 122 and 142 is arranged on a printed circuit board (adjacent printed circuit board) different from the printed circuit board on which the potential difference detection wirings 132 and 133 are arranged.

また、本実施形態の第１、第２誘導起電圧検出用配線１２２、１４２は、第１、第２電位差検出用配線１３２、１３３に生ずる誘導起電圧の影響を受け易くするために、測定部集合板１００ａの積層方向から見たときに、第１、第２電位差検出用配線１３２、１３３と重合する形状（同じ形状）としている。   In addition, the first and second induced electromotive voltage detection wirings 122 and 142 of the present embodiment are arranged to be easily affected by the induced electromotive voltage generated in the first and second potential difference detection wirings 132 and 133. When viewed from the stacking direction of the collective plate 100a, the first and second potential difference detecting wirings 132 and 133 overlap with each other (the same shape).

信号処理回路５１は、電位差検出用電圧センサ１０４の検出信号（検出電位差）から誘導起電圧検出用電圧センサ１０５の検出値を減算する補正処理を行い、補正により算出した補正値と抵抗体１３１の電気抵抗値を用いて、演算処理を行うことで、セル１０ａの面内における各測定部１０１に対応する部位を流れる電流値を検出する。従って、信号処理回路５１は、セル１０ａにおける局所部位を流れる電流値を検出する電流値検出手段を構成している。信号処理回路５１にて検出された電流値は、制御部５０へ出力される。   The signal processing circuit 51 performs a correction process of subtracting the detection value of the induced electromotive voltage detection voltage sensor 105 from the detection signal (detection potential difference) of the potential difference detection voltage sensor 104, and the correction value calculated by the correction and the resistance 131 By performing arithmetic processing using the electrical resistance value, a current value flowing through a portion corresponding to each measurement unit 101 in the plane of the cell 10a is detected. Therefore, the signal processing circuit 51 constitutes a current value detecting means for detecting a current value flowing through a local part in the cell 10a. The current value detected by the signal processing circuit 51 is output to the control unit 50.

次に、電流測定装置１００による電流測定方法および制御部５０によるインピーダンス測定方法について図６に基づいて説明する。図６は、本実施形態に係る電流測定方法およびインピーダンス測定方法を説明するための説明図である。なお、電流測定時およびインピーダンス測定時には、正弦波発振器にて燃料電池１０の出力電流に正弦波が重畳されているものとする。   Next, a current measuring method using the current measuring apparatus 100 and an impedance measuring method using the control unit 50 will be described with reference to FIG. FIG. 6 is an explanatory diagram for explaining a current measurement method and an impedance measurement method according to the present embodiment. It is assumed that a sine wave is superimposed on the output current of the fuel cell 10 by a sine wave oscillator during current measurement and impedance measurement.

燃料電池１０に水素および空気が供給開始されることで、燃料電池１０での発電が開始される。電流測定装置１００の各測定部１０１では、電流流れ方向上流側のセル１０ａから第１電極１１１の板面に電流が流れる。そして、第１電極１１１→第１ビアホール１０１ｂ→第１抵抗部１３１ａ→スルーホール１０１ａ→第２抵抗部１３１ｂ→第２ビアホール１０１ｃ→第２電極１５１の順に電流が流れ、第２電極１５１の板面から電流流れ方向下流側のセル１０ａに電流が流れる。   When the supply of hydrogen and air to the fuel cell 10 is started, power generation in the fuel cell 10 is started. In each measuring unit 101 of the current measuring device 100, a current flows from the cell 10 a upstream in the current flow direction to the plate surface of the first electrode 111. The current flows in the order of the first electrode 111 → the first via hole 101b → the first resistance portion 131a → the through hole 101a → the second resistance portion 131b → the second via hole 101c → the second electrode 151, and the plate surface of the second electrode 151 Current flows from the cell 10a to the downstream cell 10a in the current flow direction.

このとき、電位差検出用電圧センサ１０４で第１抵抗部１３１ａの一端側（第１ビアホール１０１ｂ）および第２抵抗部１３１ｂの一端側（第２ビアホール１０１ｃ）の電位差を測定する。   At this time, the potential difference detection voltage sensor 104 measures the potential difference between one end side (first via hole 101b) of the first resistance portion 131a and one end side (second via hole 101c) of the second resistance portion 131b.

ここで、第１、第２誘導起電圧測定部１２１、１４１は、第１、第２電極１１１、１５１、抵抗体１３１に対して絶縁されているので、第１、第２誘導起電圧測定部１２１、１４１には電流が流れないものの、抵抗体１３１を流れる電流による誘導起電圧の影響を受ける。このため、誘導起電圧検出用電圧センサ１０５にて抵抗体１３１を流れる電流による誘導起電圧を第１、第２誘導起電圧測定部１２１、１４１の間の電位差として検出する。   Here, since the first and second induced electromotive voltage measurement units 121 and 141 are insulated from the first and second electrodes 111 and 151 and the resistor 131, the first and second induced electromotive voltage measurement units Although no current flows through 121 and 141, it is affected by the induced electromotive voltage due to the current flowing through the resistor 131. Therefore, the induced electromotive voltage due to the current flowing through the resistor 131 is detected by the induced electromotive voltage detection voltage sensor 105 as a potential difference between the first and second induced electromotive voltage measuring units 121 and 141.

そして、信号処理回路５１では、電位差検出用電圧センサ１０４による検出電位差Ｖ１から誘導起電圧検出用電圧センサ１０５による誘導起電圧Ｖ２を減算する補正を行い、算出した補正値（＝Ｖ１−Ｖ２）を算出する。   In the signal processing circuit 51, correction is performed by subtracting the induced electromotive voltage V2 by the induced electromotive voltage detection voltage sensor 105 from the detection potential difference V1 by the potential difference detection voltage sensor 104, and the calculated correction value (= V1-V2) is obtained. calculate.

さらに、信号処理回路５１では、算出した補正値と抵抗体１３１の電気抵抗値を用いて、抵抗体１３１に流れた電流の大きさを算出する。これにより、信号処理回路５１では、セル１０ａの面内における電流測定装置１００の各測定部１０１に対応する部位の電流値、すなわちセル１０ａの面内における電流分布を測定することができる。   Further, the signal processing circuit 51 calculates the magnitude of the current flowing through the resistor 131 using the calculated correction value and the electric resistance value of the resistor 131. As a result, the signal processing circuit 51 can measure the current value of the portion corresponding to each measurement unit 101 of the current measuring device 100 in the plane of the cell 10a, that is, the current distribution in the plane of the cell 10a.

次に、制御部５０では、信号処理回路５１にて測定された各電流値、および電圧センサ１１の検出信号を用いて、周知の交流インピーダンス法によりセル１０ａの局所インピーダンスを測定する。具体的には、信号処理回路５１にて測定された各電流値、および電圧センサ１１の検出信号から高速フーリエ変換処理等の周波数解析処理によって、正弦波発振器にて重畳した正弦波の交流成分（電流成分および電圧成分）を抽出して、抽出した交流成分を用いてセル１０ａの局所インピーダンスを算出する。   Next, the control unit 50 measures the local impedance of the cell 10a by a known AC impedance method using each current value measured by the signal processing circuit 51 and the detection signal of the voltage sensor 11. Specifically, the AC component of the sine wave superimposed by the sine wave oscillator (frequency analysis processing such as fast Fourier transform processing) from each current value measured by the signal processing circuit 51 and the detection signal of the voltage sensor 11 ( Current component and voltage component) are extracted, and the local impedance of the cell 10a is calculated using the extracted AC component.

以上、本実施形態の電流測定装置１００によれば、抵抗体１３１を流れる電流により生ずる誘導起電圧を一対の誘導起電圧測定部１０３の電位差として検出し、当該一対の誘導起電圧測定部１０３の検出値を用いて電位差検出用電圧センサ１０４にて検出した検出電位差を補正することで、電位差検出用電圧センサ１０４の検出電位差から誘導起電圧の影響を除去することができる。これにより、一対の電極１１１、１５１間の電位差を精度よく検出することができる。従って、本実施形態の電流測定装置１００では、誘導起電圧の影響による電流の測定精度の低下を抑制することができる。   As described above, according to the current measuring apparatus 100 of the present embodiment, the induced electromotive voltage generated by the current flowing through the resistor 131 is detected as the potential difference between the pair of induced electromotive voltage measuring units 103, and the pair of induced electromotive voltage measuring units 103 By correcting the detected potential difference detected by the potential difference detecting voltage sensor 104 using the detected value, the influence of the induced electromotive voltage can be removed from the detected potential difference of the potential difference detecting voltage sensor 104. Thereby, the potential difference between the pair of electrodes 111 and 151 can be detected with high accuracy. Therefore, in the current measuring apparatus 100 of the present embodiment, it is possible to suppress a decrease in current measurement accuracy due to the influence of the induced electromotive voltage.

また、本実施形態では、各誘導起電圧検出用配線１２２、１４２および各電位差検出用配線１３２、１３３を異なるプリント基板上に設ける構成とすることで、プリント基板における配線の設計自由度を向上させている。   Further, in the present embodiment, each of the induced electromotive voltage detection wirings 122 and 142 and each of the potential difference detection wirings 132 and 133 are provided on different printed circuit boards, thereby improving the degree of freedom in wiring design on the printed circuit board. ing.

そして、本実施形態では、各電位差検出用配線１３２、１３３に対応する各誘導起電圧検出用配線１２２、１４２を同一形状とすると共に、各電位差検出用配線１３２、１３３が形成されたプリント基板を、対応する各誘導起電圧検出用配線１２２、１４２が形成されたプリント基板と隣接配置することで、各電位差検出用配線１３２、１３３に生ずる誘導起電圧の影響と、各誘導起電圧検出用配線１２２、１４２に生ずる誘導起電圧の影響との差を縮小することができる。これにより、誘導起電圧検出用電圧センサ１０５にて電位差検出用配線１３２、１３３に影響する誘導起電圧を精度よく検出することができる。   In the present embodiment, the induced voltage detection wirings 122 and 142 corresponding to the potential difference detection wirings 132 and 133 have the same shape, and the printed circuit board on which the potential difference detection wirings 132 and 133 are formed is provided. The adjacent induced electromotive voltage detection wirings 122 and 142 are arranged adjacent to the printed circuit board so that the influence of the induced electromotive voltage generated in the potential difference detection wirings 132 and 133 and the induced electromotive voltage detection wirings are The difference from the influence of the induced electromotive voltage generated in 122 and 142 can be reduced. As a result, the induced electromotive voltage that affects the potential difference detection wirings 132 and 133 can be accurately detected by the induced electromotive voltage detection voltage sensor 105.

さらに、各電位差検出用配線１３２、１３３に対応する各誘導起電圧検出用配線１２２、１４２を同一材料で構成することで、各電位差検出用配線１３２、１３３に生ずる誘導起電圧の影響と、各誘導起電圧検出用配線１２２、１４２に生ずる誘導起電圧の影響との差をより効果的に縮小することができる。   Furthermore, by configuring each induction electromotive voltage detection wiring 122, 142 corresponding to each potential difference detection wiring 132, 133 with the same material, the influence of the induced electromotive voltage generated in each potential difference detection wiring 132, 133, and The difference from the influence of the induced electromotive voltage generated in the induced electromotive voltage detection wirings 122 and 142 can be more effectively reduced.

（第２実施形態）
次に、本発明の第２実施形態について図７〜図９に基づいて説明する。図７は、本実施形態の測定部１０１の分解図であり、図８は、本実施形態に係る各抵抗部１３１ａ、１３１ｂの正面図であり、図９は、本実施形態に係る第１誘導起電圧測定部１２１の正面図である。 (Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is an exploded view of the measurement unit 101 of the present embodiment, FIG. 8 is a front view of the resistance units 131a and 131b according to the present embodiment, and FIG. 9 is a first guide according to the present embodiment. 2 is a front view of an electromotive voltage measurement unit 121. FIG.

本実施形態では、第１誘導起電圧検出用配線１２２および第１電位差検出用配線１３２を同一のプリント基板上に配置すると共に、第２誘導起電圧検出用配線１４２および第２電位差検出用配線１３３を同一のプリント基板上に配置している点が第１実施形態と相違している。本実施形態では、第１実施形態と同様または均等な部分についての説明を省略、または簡略化して説明する。   In the present embodiment, the first induced electromotive voltage detection wiring 122 and the first potential difference detection wiring 132 are arranged on the same printed circuit board, and the second induced electromotive voltage detection wiring 142 and the second potential difference detection wiring 133 are arranged. Is different from the first embodiment in that they are arranged on the same printed circuit board. In the present embodiment, description of the same or equivalent parts as in the first embodiment will be omitted or simplified.

図７に示すように、本実施形態の測定部集合板１００ａは、第１実施形態の測定部集合板１００ａにおける第２プリント基板１２０および第４プリント基板１４０を省略して、第１プリント基板１１０、第３プリント基板１３０、および第５プリント基板１５０といった３つのプリント基板を有して構成されている。   As shown in FIG. 7, the measurement unit assembly board 100a of the present embodiment omits the second printed circuit board 120 and the fourth printed circuit board 140 in the measurement unit assembly board 100a of the first embodiment, and omits the first printed circuit board 110. , The third printed circuit board 130, and the fifth printed circuit board 150.

具体的には、本実施形態では、第１誘導起電圧測定部１２１を第１プリント基板１１０における第１電極１１１が配置された板面の反対側に配置すると共に、第２誘導起電圧測定部１４１を第５プリント基板１５０における第２電極１５１が配置された板面の反対側に配置する構成としている。   Specifically, in the present embodiment, the first induced electromotive voltage measurement unit 121 is arranged on the opposite side of the plate surface on the first printed circuit board 110 where the first electrode 111 is arranged, and the second induced electromotive voltage measurement unit. 141 is arranged on the opposite side of the plate surface on which the second electrode 151 is arranged in the fifth printed circuit board 150.

さらに、第１誘導起電圧測定部１２１、第１誘導起電圧検出用配線１２２、および第１電位差検出用配線１３２を同一の第１プリント基板１１０上に配置する構成とし、第２誘導起電圧測定部１４１、第２誘導起電圧検出用配線１４２、および第２電位差検出用配線１３３を同一の第５プリント基板１５０上に配置する構成としている。   Further, the first induced electromotive voltage measurement unit 121, the first induced electromotive voltage detection wiring 122, and the first potential difference detection wiring 132 are arranged on the same first printed circuit board 110, and the second induced electromotive voltage measurement. The part 141, the second induced electromotive voltage detection wiring 142, and the second potential difference detection wiring 133 are arranged on the same fifth printed circuit board 150.

ここで、図９に示すように、第１誘導起電圧検出用配線１２２は、第１電位差検出用配線１３２に生ずる誘導起電圧の影響を受け易くするために、第１プリント基板１１０上において第１電位差検出用配線１３２に対して所定の間隔をあけて並走するように形成されている。なお、第１誘導起電圧検出用配線１２２と第１電位差検出用配線１３２とは、互いに導通しないように絶縁されている。   Here, as shown in FIG. 9, the first induced electromotive voltage detection wiring 122 has the first printed circuit board 110 on the first printed circuit board 110 in order to be easily affected by the induced electromotive voltage generated in the first potential difference detection wiring 132. It is formed so as to run parallel to the one potential difference detection wiring 132 with a predetermined interval. The first induced electromotive voltage detection wiring 122 and the first potential difference detection wiring 132 are insulated so as not to be electrically connected to each other.

また、図示しないが、第２誘導起電圧検出用配線１４２は、第２電位差検出用配線１３３に生ずる誘導起電圧の影響を受け易くするために、第５プリント基板１５０上において第２電位差検出用配線１３３に所定の間隔をあけて並走するように形成されている。なお、第２誘導起電圧検出用配線１４２と第２電位差検出用配線１３３とは、互いに導通しないように絶縁されている。   Although not shown, the second induced electromotive voltage detection wiring 142 is used to detect the second potential difference on the fifth printed circuit board 150 in order to be easily affected by the induced electromotive voltage generated in the second potential difference detection wiring 133. The wiring 133 is formed so as to run in parallel at a predetermined interval. The second induced electromotive voltage detection wiring 142 and the second potential difference detection wiring 133 are insulated so as not to be electrically connected to each other.

本実施形態の測定部１０１を有する電流測定装置１００では、抵抗体１３１を流れる電流により生ずる誘導起電圧を一対の誘導起電圧測定部１０３の電位差として検出することができるので、第１実施形態と同様に、誘導起電圧の影響による電流測定装置１００における電流の測定精度の低下を抑制することができる。   In the current measuring apparatus 100 having the measuring unit 101 of the present embodiment, the induced electromotive voltage generated by the current flowing through the resistor 131 can be detected as a potential difference between the pair of induced electromotive voltage measuring units 103. Similarly, it is possible to suppress a decrease in current measurement accuracy in the current measuring apparatus 100 due to the influence of the induced electromotive voltage.

また、本実施形態では、第１実施形態に比べて、測定部集合板１００ａを構成するプリント基板の枚数を少なくすることができるので、測定部集合板１００ａの厚みを薄くすることができる。この結果、電流測定装置１００の体格の小型化を図ることができる。   Further, in this embodiment, since the number of printed circuit boards constituting the measurement unit assembly plate 100a can be reduced as compared with the first embodiment, the thickness of the measurement unit assembly plate 100a can be reduced. As a result, the size of the current measuring device 100 can be reduced.

さらに、各電位差検出用配線１３２、１３３に対応する各誘導起電圧検出用配線１２２、１４２を同一のプリント基板上で並走する形状とすることで、各電位差検出用配線１３２、１３３に生ずる誘導起電圧の影響と、各誘導起電圧検出用配線１２２、１４２に生ずる誘導起電圧の影響との差をより効果的に縮小することができる。   Furthermore, the induced electromotive voltage detection wirings 122 and 142 corresponding to the respective potential difference detection wirings 132 and 133 are formed to run in parallel on the same printed circuit board, so that the induction generated in each of the potential difference detection wirings 132 and 133 is performed. The difference between the influence of the electromotive voltage and the influence of the induced electromotive voltage generated on each of the induced electromotive voltage detection wirings 122 and 142 can be more effectively reduced.

（他の実施形態）
以上、本発明の実施形態について説明したが、本発明はこれに限定されるものではなく、各請求項に記載した範囲を逸脱しない限り、各請求項の記載文言に限定されず、当業者がそれらから容易に置き換えられる範囲にも及び、かつ、当業者が通常有する知識に基づく改良を適宜付加することができる。例えば、以下のように種々変形可能である。 (Other embodiments)
As mentioned above, although embodiment of this invention was described, this invention is not limited to this, Unless it deviates from the range described in each claim, it is not limited to the wording of each claim, and those skilled in the art Improvements based on the knowledge that a person skilled in the art normally has can be added as appropriate to the extent that they can be easily replaced. For example, various modifications are possible as follows.

（１）上述の各実施形態では、信号処理回路５１にて電位差検出用電圧センサ１０４の検出電位差から誘導起電圧検出用電圧センサ１０５の検出値を減算する補正処理を行う例について説明したが、単に電位差検出用電圧センサ１０４の検出電位差から誘導起電圧検出用電圧センサ１０５の検出値から減算する補正に限らず、例えば、電位差検出用電圧センサ１０４の検出電位差から誘導起電圧検出用電圧センサ１０５の検出値に重み付けした値を減算する補正処理を行ってもよい。   (1) In each of the above-described embodiments, an example in which the signal processing circuit 51 performs correction processing for subtracting the detection value of the induced electromotive voltage detection voltage sensor 105 from the detection potential difference of the potential difference detection voltage sensor 104 has been described. The correction is not limited to simply subtracting the detection value of the induced electromotive voltage detection voltage sensor 105 from the detection potential difference of the potential difference detection voltage sensor 104. For example, the induced electromotive voltage detection voltage sensor 105 is detected from the detection potential difference of the potential difference detection voltage sensor 104. Correction processing for subtracting a weighted value from the detected value may be performed.

また、信号処理回路５１にて行う補正処理は、ソフトウェアによる演算処理に限らず、例えば、図１０に示すように、オペアンプ等を用いた演算回路（ハードウェア）にて行うようにしてもよい。   Further, the correction processing performed by the signal processing circuit 51 is not limited to arithmetic processing by software, and may be performed by, for example, an arithmetic circuit (hardware) using an operational amplifier as shown in FIG.

（２）上述の各実施形態のように、抵抗体１３１を一対の抵抗部１３１ａ、１３１ｂで構成することが好ましいが、これに限定されず、抵抗体１３１を１つの抵抗部で構成してもよい。   (2) As in the above-described embodiments, the resistor 131 is preferably configured by a pair of resistor portions 131a and 131b. However, the present invention is not limited to this, and the resistor 131 may be configured by one resistor portion. Good.

（３）上述の各実施形態では、測定部集合板１００ａを複数のプリント基板を積層した積層基板で構成する例について説明したが、プリント基板に限らず、絶縁性を有する基板であれば用いることができる。   (3) In each of the above-described embodiments, an example in which the measurement unit assembly plate 100a is configured by a laminated substrate in which a plurality of printed boards are stacked has been described. Can do.

（４）上述の第１実施形態のように、各電位差検出用配線１３２、１３３と各誘導起電圧検出用配線１２２、１４２とを隣接するプリント基板に配置する構成が好ましいが、各電位差検出用配線１３２、１３３と各誘導起電圧検出用配線１２２、１４２とを隣接しないプリント基板に配置してもよい。   (4) As in the first embodiment described above, it is preferable that the potential difference detection wires 132 and 133 and the induced electromotive voltage detection wires 122 and 142 are arranged on the adjacent printed circuit board. The wirings 132 and 133 and the induced electromotive voltage detection wirings 122 and 142 may be arranged on non-adjacent printed boards.

（５）上述の第１実施形態のように、各電位差検出用配線１３２、１３３および抵抗体１３１を同一のプリント基板上に配置し、各誘導起電圧検出用配線１２２、１４２および一対の誘導起電圧測定部１２１、１４１を同一のプリント基板上に配置する構成が好ましいが、これに限定されず、異なるプリント基板上に配置してもよい。   (5) As in the first embodiment described above, the potential difference detection wires 132 and 133 and the resistor 131 are arranged on the same printed circuit board, and each of the induced electromotive voltage detection wires 122 and 142 and the pair of induction electromotive forces are arranged. The configuration in which the voltage measuring units 121 and 141 are arranged on the same printed board is preferable, but the configuration is not limited to this, and the voltage measuring units 121 and 141 may be arranged on different printed boards.

（６）上述の第１実施形態では、第１誘導起電圧測定部１２１を第２プリント基板１２０における第３プリント基板１３０と対向する面に配置し、第２誘導起電圧測定部１４１を第４プリント基板１４０における第３プリント基板１３０と対向する面に配置する例について説明したが、これに限定されない。例えば、第１誘導起電圧測定部１２１を第２プリント基板１２０における第１プリント基板１１０と対向する面に配置し、第２誘導起電圧測定部１４１を第４プリント基板１４０における第５プリント基板１５０と対向する面に配置するようにしてもよい。   (6) In the first embodiment described above, the first induced electromotive voltage measurement unit 121 is disposed on the surface of the second printed circuit board 120 facing the third printed circuit board 130, and the second induced electromotive voltage measurement unit 141 is the fourth circuit. Although the example arrange | positioned in the surface facing the 3rd printed circuit board 130 in the printed circuit board 140 was demonstrated, it is not limited to this. For example, the first induced electromotive voltage measurement unit 121 is disposed on the surface of the second printed circuit board 120 facing the first printed circuit board 110, and the second induced electromotive voltage measurement unit 141 is disposed on the fifth printed circuit board 150 in the fourth printed circuit board 140. You may make it arrange | position on the surface facing.

（７）上述の各実施形態のように、各電位差検出用配線１３２、１３３および各誘導起電圧検出用配線１２２、１４２を同一の材料で構成することが好ましいが、別材料で構成してもよい。   (7) As in the above-described embodiments, the potential difference detection wires 132 and 133 and the induced electromotive voltage detection wires 122 and 142 are preferably made of the same material, but may be made of different materials. Good.

（８）上述の各実施形態では、スルーホール１０１ａ、第１、第２ビアホール１０１ｂ、１０１ｃを丸穴形状とする例について説明したが、これに限定されず、例えば長穴形状としてもよい。   (8) In each of the above-described embodiments, the example in which the through hole 101a, the first and second via holes 101b and 101c are round holes has been described, but the present invention is not limited to this, and may be a long hole, for example.

（９）上述の各実施形態では、電流測定装置１００にセル１０ａの面内の全体に対応して複数の測定部１０１を設けたが、測定部１０１は少なくとも１個設けられていればよい。これにより、セル１０ａにおける測定部１０１に対応する部位の局所電流を測定することができる。   (9) In each of the above-described embodiments, the current measuring apparatus 100 is provided with the plurality of measuring units 101 corresponding to the entire surface of the cell 10a. However, it is sufficient that at least one measuring unit 101 is provided. Thereby, the local current of the site | part corresponding to the measurement part 101 in the cell 10a can be measured.

（１０）上述の各実施形態では、電流測定装置１００を隣り合うセル１０ａ間に配置する構成としたが、これに限定されず、燃料電池１０におけるセル１０ａの積層方向端部に配置するようにしてもよい。これによれば、燃料電池１０におけるセル１０ａの積層方向端部のセル面内の局所電流を測定することができる。   (10) In each of the above embodiments, the current measuring device 100 is arranged between the adjacent cells 10a. However, the present invention is not limited to this, and the current measuring device 100 is arranged at the end of the fuel cell 10 in the stacking direction of the cells 10a. May be. According to this, it is possible to measure the local current in the cell plane at the end of the fuel cell 10 in the stacking direction of the cells 10a.

１０ 燃料電池
１０ａ 燃料電池セル（セル）
１００ 電流測定装置
１００ａ 測定部集合板（板状部材）
１０２ 電流測定部
１０３ 一対の誘導起電圧測定部
１０４ 電位差検出用電圧センサ（電位差検出手段）
１０５ 誘導起電圧センサ（誘導起電圧検出手段）
１１１ 第１電極
１３１ 抵抗体
１３２ 第１電位差検出用配線
１３３ 第２電位差検出用配線
１２１ 第１誘導起電圧測定部
１２２ 第１誘導起電圧検出用配線
１４１ 第２誘導起電圧測定部
１４２ 第２誘導起電圧検出用配線
１５１ 第２電極 10 Fuel cell 10a Fuel cell (cell)
100 Current measuring device 100a Measuring unit assembly plate (plate-like member)
DESCRIPTION OF SYMBOLS 102 Current measurement part 103 A pair of induced electromotive voltage measurement part 104 Voltage sensor for potential difference detection (potential difference detection means)
105 Inductive electromotive force sensor (Inductive electromotive force detection means)
111 First Electrode 131 Resistor 132 First Potential Difference Detection Line 133 Second Potential Difference Detection Line 121 First Inductive Electromotive Voltage Measurement Unit 122 First Inductive Electromotive Voltage Detection Line 141 Second Inductive Electromotive Voltage Measurement Unit 142 Second Induction Electromotive voltage detection wiring 151 Second electrode

Claims (8)

酸化剤ガスと燃料ガスとを電気化学反応させて電気エネルギを出力する複数のセル（１０ａ）を積層配置して構成された燃料電池（１０）に適用されて、前記セル（１０ａ）を流れる電流を測定する電流測定装置であって、
前記セル（１０ａ）に隣接して配置された板状部材（１００ａ）と、
前記板状部材（１００ａ）の両面に配置された一対の電極（１１１、１５１）、予め定めた電気抵抗値を有し前記一対の電極（１１１、１５１）を電気的に接続する抵抗体（１３１）を有する電流測定部（１０２）と、
前記一対の電極（１１１、１２１）および前記抵抗体（１３１）に対して絶縁された状態で、前記抵抗体（１３１）を狭持するように配置された一対の誘導起電圧測定部（１０３）と、
前記一対の電極（１１１、１５１）における第１電極（１１１）と前記抵抗体（１３１）とを接続する第１接続部（１０１ｂ）、および前記抵抗体（１３１）と第２電極（１５１）とを接続する第２接続部（１０１ｃ）間の電位差を検出する電位差検出手段（１０４）と、
前記一対の誘導起電圧測定部（１０３）間の電位差を検出する誘導起電圧検出手段（１０５）と、
前記電位差検出手段（１０４）にて検出した検出電位差を前記誘導起電圧検出手段（１０５）にて検出した検出値で補正した補正値、および前記抵抗体（１３１）の電気抵抗値を用いて、前記セル（１０ａ）の局所部位を流れる電流値を検出する電流値検出手段（５１）と、
を備えることを特徴とする電流測定装置。 The current flowing through the cell (10a) applied to the fuel cell (10) configured by stacking and arranging a plurality of cells (10a) for outputting electric energy by electrochemical reaction of the oxidant gas and the fuel gas. A current measuring device for measuring
A plate-like member (100a) disposed adjacent to the cell (10a);
A pair of electrodes (111, 151) disposed on both surfaces of the plate-like member (100a), a resistor (131) having a predetermined electrical resistance value and electrically connecting the pair of electrodes (111, 151). ) A current measuring unit (102) having
A pair of induced electromotive force measurement units (103) arranged to sandwich the resistor (131) while being insulated from the pair of electrodes (111, 121) and the resistor (131) When,
A first connection part (101b) for connecting the first electrode (111) and the resistor (131) in the pair of electrodes (111, 151), and the resistor (131) and the second electrode (151) A potential difference detecting means (104) for detecting a potential difference between the second connection portions (101c) for connecting
Induced electromotive voltage detection means (105) for detecting a potential difference between the pair of induced electromotive voltage measuring units (103);
Using the correction value obtained by correcting the detection potential difference detected by the potential difference detection means (104) with the detection value detected by the induced electromotive voltage detection means (105) and the electric resistance value of the resistor (131), Current value detection means (51) for detecting a current value flowing through a local portion of the cell (10a);
A current measuring device comprising: 前記補正値は、前記電位差検出手段（１０４）にて検出した検出電位差から前記誘導起電圧検出手段（１０５）の検出値を減算した値であることを特徴とする請求項１に記載の電流測定装置。   The current measurement according to claim 1, wherein the correction value is a value obtained by subtracting a detection value of the induced electromotive voltage detection means (105) from a detection potential difference detected by the potential difference detection means (104). apparatus. 前記電位差検出手段（１０４）は、第１電位差検出用配線（１３２）を介して前記第１接続部（１０１ｂ）に電気的に接続されると共に、第２電位差検出用配線（１３３）を介して前記第２接続部（１０１ｃ）に電気的に接続され、
前記誘導起電圧検出手段（１０５）は、第１誘導起電圧検出用配線（１２２）を介して前記一対の誘導起電圧測定部（１０３）のうち、前記第１電極（１１１）側の第１誘導起電圧測定部（１２１）に電気的に接続されると共に、第２誘導起電圧検出用配線（１４２）を介して前記一対の誘導起電圧測定部（１０３）のうち、前記第２電極（１５１）側の第２誘導起電圧測定部（１４１）に電気的に接続され、
前記板状部材（１００ａ）は、複数の基板（１１０〜１５０）が積層された積層基板で構成され、
前記第１、第２電位差検出用配線（１３２、１３３）および前記第１、第２誘導起電圧検出用配線（１２２、１４２）は、前記複数の基板（１１０〜１５０）のうち、異なる基板上に形成されていることを特徴とする請求項１または２に記載の電流測定装置。 The potential difference detecting means (104) is electrically connected to the first connecting portion (101b) via the first potential difference detecting wiring (132), and via the second potential difference detecting wiring (133). Electrically connected to the second connection part (101c),
The induced electromotive voltage detecting means (105) includes a first induced electromotive voltage measuring unit (103) on the first electrode (111) side of the pair of induced electromotive voltage measuring units (103) via a first induced electromotive voltage detecting wire (122). It is electrically connected to the induced electromotive voltage measurement unit (121), and the second electrode (of the pair of induced electromotive voltage measurement units (103) via the second induced electromotive voltage detection wiring (142) ( 151) electrically connected to the second induced electromotive voltage measurement unit (141) on the side,
The plate-like member (100a) is composed of a laminated substrate in which a plurality of substrates (110 to 150) are laminated,
The first and second potential difference detection wires (132, 133) and the first and second induced electromotive voltage detection wires (122, 142) may be on different substrates among the plurality of substrates (110 to 150). The current measuring device according to claim 1, wherein the current measuring device is formed as follows. 前記第１電位差検出用配線（１３２）および前記第１誘導起電圧検出用配線（１２２）は、前記複数の基板（１１０〜１５０）の積層方向から見たときに互いに重合する形状で構成され、
前記第２電位差検出用配線（１３３）および前記第２誘導起電圧検出用配線（１４２）は、前記複数の基板（１１０〜１５０）の積層方向から見たときに互いに重合する形状で構成されていることを特徴とする請求項３に記載の電流測定装置。 The first potential difference detection wiring (132) and the first induced electromotive voltage detection wiring (122) are configured to overlap each other when viewed from the stacking direction of the plurality of substrates (110 to 150),
The second potential difference detection wiring (133) and the second induced electromotive voltage detection wiring (142) are configured to overlap each other when viewed from the stacking direction of the plurality of substrates (110 to 150). The current measuring device according to claim 3, wherein: 前記第１電位差検出用配線（１３２）が形成された基板（１３０）、および前記第１誘導起電圧検出用配線（１２２）が形成された基板（１２０）は、互いに隣接して配置され、
前記第２電位差検出用配線（１３３）が形成された基板（１３０）、および前記第２誘導起電圧検出用配線（１４２）が形成された基板（１４０）は、互いに隣接して配置されていることを特徴とする請求項３または４に記載の電流測定装置。 The substrate (130) on which the first potential difference detection wiring (132) is formed and the substrate (120) on which the first induced electromotive voltage detection wiring (122) is formed are disposed adjacent to each other,
The substrate (130) on which the second potential difference detection wiring (133) is formed and the substrate (140) on which the second induced electromotive voltage detection wiring (142) is formed are disposed adjacent to each other. The current measuring device according to claim 3 or 4, characterized by the above. 前記電位差検出手段（１０４）は、第１電位差検出用配線（１３２）を介して前記第１接続部（１０１ｂ）に電気的に接続されると共に、第２電位差検出用配線（１３３）を介して前記第２接続部（１０１ｃ）に電気的に接続され、
前記誘導起電圧検出手段（１０５）は、第１誘導起電圧検出用配線（１２２）を介して前記一対の誘導起電圧測定部（１０３）のうち、前記第１電極（１１１）側の第１誘導起電圧測定部（１２１）に電気的に接続されると共に、第２誘導起電圧検出用配線（１４２）を介して前記一対の誘導起電圧測定部（１０３）のうち、前記第２電極（１５１）側の第２誘導起電圧測定部（１４１）に電気的に接続され、
前記板状部材（１００ａ）は、複数の基板（１１０、１３０、１５０）が積層された積層基板で構成され、
前記第１誘導起電圧検出用配線（１２２）および前記第２誘導起電圧検出用配線（１４２）は、前記複数の基板（１１０、１３０、１５０）のうち、異なる基板上に形成され、
前記第１電位差検出用配線（１３２）および前記第１誘導起電圧検出用配線（１２２）は、前記複数の基板（１１０、１３０、１５０）のうち、同一の基板（１１０）上に形成され、
前記第２電位差検出用配線（１３３）および前記第２誘導起電圧検出用配線（１４２）は、前記複数の基板（１１０、１３０、１５０）のうち、同一の基板（１５０）上に形成されていることを特徴とする請求項１または２に記載の電流測定装置。 The potential difference detecting means (104) is electrically connected to the first connecting portion (101b) via the first potential difference detecting wiring (132), and via the second potential difference detecting wiring (133). Electrically connected to the second connection part (101c),
The induced electromotive voltage detecting means (105) includes a first induced electromotive voltage measuring unit (103) on the first electrode (111) side of the pair of induced electromotive voltage measuring units (103) via a first induced electromotive voltage detecting wire (122). It is electrically connected to the induced electromotive voltage measurement unit (121), and the second electrode (of the pair of induced electromotive voltage measurement units (103) via the second induced electromotive voltage detection wiring (142) ( 151) electrically connected to the second induced electromotive voltage measurement unit (141) on the side,
The plate-like member (100a) is composed of a laminated substrate in which a plurality of substrates (110, 130, 150) are laminated,
The first induced electromotive voltage detection wiring (122) and the second induced electromotive voltage detection wiring (142) are formed on different substrates among the plurality of substrates (110, 130, 150),
The first potential difference detection wiring (132) and the first induced electromotive voltage detection wiring (122) are formed on the same substrate (110) among the plurality of substrates (110, 130, 150),
The second potential difference detection wiring (133) and the second induced electromotive voltage detection wiring (142) are formed on the same substrate (150) among the plurality of substrates (110, 130, 150). The current measuring device according to claim 1, wherein the current measuring device is a current measuring device. 前記第１電位差検出用配線（１３２）および前記第１誘導起電圧検出用配線（１２２）は、同一の基板（１１０）上において互いに並走する形状で構成され、
前記第２電位差検出用配線（１３３）および前記第２誘導起電圧検出用配線（１４２）は、同一の基板（１５０）上において互いに並走する形状で構成されていることを特徴とする請求項６に記載の電流測定装置。 The first potential difference detection wiring (132) and the first induced electromotive voltage detection wiring (122) are configured to run parallel to each other on the same substrate (110),
The second potential difference detection wiring (133) and the second induced electromotive voltage detection wiring (142) are configured to be parallel to each other on the same substrate (150). 6. The current measuring device according to 6. 前記第１、第２誘導起電圧検出用配線（１２２、１４２）および前記第１、第２電位差検出用配線（１３２、１３３）は、同一材料から構成されていることを特徴とする請求項３ないし７のいずれか１つに記載の電流測定装置。
4. The first and second induced electromotive voltage detection wirings (122, 142) and the first and second potential difference detection wirings (132, 133) are made of the same material. The current measuring device according to any one of 7 to 7.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114236407A (en) * 2021-12-16 2022-03-25 海南大学 Method and device for measuring performance loss of energy conversion device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001A (en) * 1845-04-16 Carriage- wheel
US6014A (en) * 1849-01-09 Stop-motion for drawing-frames
JPH02201167A (en) * 1989-01-30 1990-08-09 Hitachi Ltd Method of measuring potential difference
JPH0484773A (en) * 1990-07-27 1992-03-18 Nippon Inter Electronics Corp Shunt resistor for current detection
JP2002372550A (en) * 2001-06-14 2002-12-26 Koa Corp Current detecting resistor
JP2008525975A (en) * 2004-12-28 2008-07-17 バラード パワー システムズ インコーポレイティド Integrated current collector and electrical component plate for fuel cell stack
JP2009016157A (en) * 2007-07-04 2009-01-22 Denso Corp Current measurement device
JP2010103071A (en) * 2008-09-26 2010-05-06 Denso Corp Current measuring device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001A (en) * 1845-04-16 Carriage- wheel
US6014A (en) * 1849-01-09 Stop-motion for drawing-frames
JPH02201167A (en) * 1989-01-30 1990-08-09 Hitachi Ltd Method of measuring potential difference
JPH0484773A (en) * 1990-07-27 1992-03-18 Nippon Inter Electronics Corp Shunt resistor for current detection
JP2002372550A (en) * 2001-06-14 2002-12-26 Koa Corp Current detecting resistor
JP2008525975A (en) * 2004-12-28 2008-07-17 バラード パワー システムズ インコーポレイティド Integrated current collector and electrical component plate for fuel cell stack
JP2009016157A (en) * 2007-07-04 2009-01-22 Denso Corp Current measurement device
JP2010103071A (en) * 2008-09-26 2010-05-06 Denso Corp Current measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114236407A (en) * 2021-12-16 2022-03-25 海南大学 Method and device for measuring performance loss of energy conversion device

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