JPH05223012A - Device for detecting remaining quantity of hydrogen - Google Patents

Device for detecting remaining quantity of hydrogen

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Publication number
JPH05223012A
JPH05223012A JP2272592A JP2272592A JPH05223012A JP H05223012 A JPH05223012 A JP H05223012A JP 2272592 A JP2272592 A JP 2272592A JP 2272592 A JP2272592 A JP 2272592A JP H05223012 A JPH05223012 A JP H05223012A
Authority
JP
Japan
Prior art keywords
hydrogen
tank
remaining
detected
metal hydride
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2272592A
Other languages
Japanese (ja)
Other versions
JP3147968B2 (en
Inventor
Kenji Kanehara
賢治 金原
Toshihiko Ito
猪頭  敏彦
Jun Yamada
潤 山田
Osamu Kito
修 鬼頭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Soken Inc
Original Assignee
Nippon Soken Inc
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Soken Inc, Toyota Motor Corp filed Critical Nippon Soken Inc
Priority to JP02272592A priority Critical patent/JP3147968B2/en
Priority to US07/908,270 priority patent/US5305714A/en
Publication of JPH05223012A publication Critical patent/JPH05223012A/en
Application granted granted Critical
Publication of JP3147968B2 publication Critical patent/JP3147968B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

PURPOSE:To prevent unexpected fuel lack or the like by detecting the remaining quantity of hydrogen in a metal-hydride tank over the whole range of 0 to 100%. CONSTITUTION:With the use of a nature of metal hydride(MH) such that the lattice of crystal expands so as to increase the bulk of MH as MH stores hydrogen, the bulk of MH is detected so as to estimate the remaining quantity of hydrogen. For example, with the use of electrostatic capacitance type level sensor 4 having electrode plates whose front ends are embedded in granular metal hydride, the electrostatic capacitance which varies in accordance with a quantity of hydrogen existing between two electrodes 4a, 4b having their surfaces coated with an insulation film, is detected by a detecting circuit 5, and is then converted into a remaining hydrogen quantity by a computing circuit 6. Then the quantity is delivered to a display part 7.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、金属水素化物(メタル
ハイドライド或いは水素吸蔵合金ともいう。以下これを
MHと略称する。)を用いた水素貯蔵タンク内の水素残
量を検出する装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting the remaining amount of hydrogen in a hydrogen storage tank using a metal hydride (also referred to as a metal hydride or a hydrogen storage alloy. This is hereinafter abbreviated as MH). Is.

【0002】[0002]

【従来の技術】従来、所謂MHタンク内の水素残量を検
出する方法として、例えば、水素を燃料とするエンジン
と、そのための燃料タンクとして、エンジン冷却水を加
熱のための熱媒体として利用するMHタンクを搭載して
いる水素自動車において、MHタンク内の温度を検出
し、それが80℃以上になった時に燃料切れと判定して
警告を出すシステムがある。(特開昭63−24645
9号公報参照)
2. Description of the Related Art Conventionally, as a method of detecting the remaining amount of hydrogen in a so-called MH tank, for example, an engine using hydrogen as a fuel, a fuel tank for the engine, and engine cooling water as a heat medium for heating are used. There is a system that detects the temperature in the MH tank of a hydrogen automobile equipped with the MH tank and determines that the fuel is out when the temperature exceeds 80 ° C and issues a warning. (JP-A-63-24645
(See Publication No. 9)

【0003】[0003]

【発明が解決しようとする課題】ところが、始めからM
Hタンク内の水素残量が少ない状態で、しかも冷間始動
時のように、タンク内のMHの温度が低い条件下では、
MHの温度が80℃まで上昇する前に燃料切れになって
しまう可能性がある。また、燃料があるうちは低温で、
燃料切れになると急に温度が上昇して80℃を越えるた
め、それまでは、あとどのぐらい水素が残っているのか
わからない状態にあり、走行中に突然燃料切れになって
しまう可能性がある。そこで、本発明の目的は、水素残
量0%から100%までの全域にわたって、リアルタイ
ムに水素残量を検出することができる手段を提供するこ
とにある。
However, since the beginning, M
In the condition where the amount of hydrogen remaining in the H tank is low, and when the temperature of the MH in the tank is low, such as during cold start,
There is a possibility that the fuel will run out before the MH temperature rises to 80 ° C. Also, the temperature is low while there is fuel,
When the fuel runs out, the temperature suddenly rises and exceeds 80 ° C, and until then, it is difficult to know how much hydrogen remains, and there is a possibility that the fuel will suddenly run out during running. Therefore, an object of the present invention is to provide a means capable of detecting the remaining hydrogen amount in real time over the entire range from 0% to 100% of the remaining hydrogen amount.

【0004】[0004]

【課題を解決するための手段】本発明は、前記の課題を
解決するための手段として、MHが水素を吸蔵すると、
MH合金の結晶格子が膨張することにより、MHの粉末
の体積が増加し、逆に水素を解離すると、結晶格子が縮
少して、MHの粉末の体積が減少するという性質を利用
し、MHの体積変化を検出すると共に、MHの体積変化
からMH水素貯蔵量を演算して水素残量を表示する水素
残量計を含む水素残量検出装置を提供するものである。
Means for Solving the Problems The present invention provides a means for solving the above-mentioned problems when MH stores hydrogen.
By expanding the crystal lattice of the MH alloy, the volume of the powder of MH increases, and conversely, when hydrogen is dissociated, the crystal lattice shrinks, and the volume of the powder of MH decreases. Provided is a hydrogen remaining amount detecting device including a hydrogen remaining amount gauge that detects a volume change and calculates a MH hydrogen storage amount from the MH volume change to display a hydrogen remaining amount.

【0005】[0005]

【作用】MHの粉末の体積(嵩)は水素吸蔵量の変化と
共に連続的に変化する性質があるので、上記構成によれ
ば、2値的な変化をするMHの温度による残量検出方式
と異なり、すべての状態においてMHに含まれる水素量
をアナログ的な連続変化量として、リアルタイムに検出
することができる。例えば、水素エンジンとMHタンク
を搭載した水素自動車においては、走り出す前に水素の
残量を確認することができるので、走行中、不意に燃料
切れになって立往生するというようなことがなくなる。
The volume (bulk) of the MH powder has a property of continuously changing with the change of the hydrogen storage amount. Therefore, according to the above configuration, the residual amount detecting method based on the temperature of the MH that makes a binary change is used. Differently, the amount of hydrogen contained in MH can be detected in real time in all states as an analog continuous change amount. For example, in a hydrogen vehicle equipped with a hydrogen engine and an MH tank, the remaining amount of hydrogen can be confirmed before starting, so that there is no chance of suddenly running out of fuel and getting stuck during running.

【0006】[0006]

【実施例】図1に、本発明における第1の実施例の全体
構成を示す。1はMHタンク、2はMHタンク1内に充
填された粉末状のMHであり、タンク容積の約80%以
下まで充填されている。3はMHタンク1内に充填され
たMHに埋没するように設けられた曲管状の熱交換器で
あり、曲管は多数のフィンを有し、水素を充填する時は
冷水、水素を放出する際は、例えば水素エンジン車の場
合はエンジン冷却水等を熱媒体として、ポンプ等により
その中へ流通させる。
FIG. 1 shows the overall construction of a first embodiment of the present invention. Reference numeral 1 is an MH tank, 2 is a powdery MH filled in the MH tank 1, and is filled up to about 80% or less of the tank volume. Reference numeral 3 is a curved tubular heat exchanger provided so as to be buried in the MH filled in the MH tank 1. The curved tube has a large number of fins, and when charging hydrogen, releases cold water and hydrogen. At this time, for example, in the case of a hydrogen engine vehicle, engine cooling water or the like is used as a heat medium and is circulated therein by a pump or the like.

【0007】4は静電容量式レベルセンサで、2枚の平
行な電極板4a,4bの先端は水素を充填しない状態で
少なくとも10%以上粉末状MHに埋没するように、タ
ンク上部に取り付けられている。なおMHは導電体であ
るから、電極板表面に絶縁コーティングを施こしてい
る。また、電極板ホルダ4cは気密性を保つように、M
HタンクにPTネジまたはフランジ等の手段を用いて取
り付けられている。5は電極板4a,4b間の静電容量
を検出する回路であり、6は回路5で検出した静電容量
を水素残量に換算する演算回路、7は、例えば、自動車
のフューエルメータ等の水素残量表示部である。
Reference numeral 4 denotes a capacitance type level sensor which is attached to the upper part of the tank so that the tips of the two parallel electrode plates 4a and 4b are at least 10% or more buried in the powdery MH without being filled with hydrogen. ing. Since MH is a conductor, an insulating coating is applied to the surface of the electrode plate. In addition, the electrode plate holder 4c is
It is attached to the H tank using means such as a PT screw or a flange. Reference numeral 5 is a circuit for detecting the electrostatic capacitance between the electrode plates 4a and 4b, 6 is an arithmetic circuit for converting the electrostatic capacitance detected by the circuit 5 into the remaining amount of hydrogen, and 7 is, for example, a fuel meter of an automobile. It is a remaining hydrogen display portion.

【0008】第1実施例の水素残量検出装置の作動を次
に説明する。まず水素をMHタンク1に充填する時、熱
交換器3に冷水を流してタンク1内のMH2を冷却しな
がら、高圧水素ボンベ10からレギュレータ9aで減圧
された水素をMHタンク1に導入すると、タンク1内の
MH2となるべき金属(合金)は金属水素化物に変化す
ることによって水素を吸蔵し、その際MHの粒子自体が
膨張するので、粉末のレベルが上昇する。従って、電極
板4a,4b間に存在するMHの体積が増加し、電極板
4a,4b間の静電容量が増加する。静電容量は検出回
路5によって電気信号に変換され、演算回路6におい
て、図2に示すような水素残量と静電容量の関係をもと
に水素残量に換算され、表示部7に表示される。
The operation of the hydrogen remaining amount detecting apparatus of the first embodiment will be described below. First, when filling the MH tank 1 with hydrogen, while introducing cold water into the heat exchanger 3 to cool the MH 2 in the tank 1, while introducing hydrogen depressurized by the regulator 9a from the high-pressure hydrogen cylinder 10 into the MH tank 1, The metal (alloy) to be MH2 in the tank 1 absorbs hydrogen by changing to a metal hydride, and the particles of MH expand at that time, so that the powder level rises. Therefore, the volume of MH existing between the electrode plates 4a and 4b increases, and the capacitance between the electrode plates 4a and 4b increases. The electrostatic capacitance is converted into an electric signal by the detection circuit 5, and is converted into the residual hydrogen amount in the arithmetic circuit 6 based on the relationship between the residual hydrogen amount and the electrostatic capacitance as shown in FIG. To be done.

【0009】また、水素エンジンへ供給する等の目的で
水素を放出する時は、熱交換器3にエンジンで暖められ
た冷却水を流し、MH2が水素を解離して放出すると、
MHの粒子自体が収縮するので、粉末2のレベルが下降
する。従って、電極板4a,4b間に存在するMHが減
少して静電容量が減少する。その際の静電容量も同様
に、検出回路5、演算回路6により水素残量に変換し、
表示部7に表示される。MHの粒子が経年劣化により微
細化して体積が変化する場合には、例えばMHタンクの
定期点検の際等に、MHから水素を脱気した際にリセッ
トすることができる機能を演算回路6に設けてもよい。
Further, when hydrogen is released for the purpose of supplying it to a hydrogen engine, cooling water warmed by the engine is caused to flow through the heat exchanger 3, and when MH2 dissociates and releases hydrogen,
As the particles of MH contract themselves, the level of powder 2 drops. Therefore, the MH existing between the electrode plates 4a and 4b decreases, and the capacitance decreases. Similarly, the electrostatic capacity at that time is converted into the remaining hydrogen amount by the detection circuit 5 and the arithmetic circuit 6,
It is displayed on the display unit 7. When the particles of MH become finer due to aging and change in volume, the arithmetic circuit 6 is provided with a function capable of resetting when hydrogen is degassed from the MH, for example, during periodic inspection of the MH tank. May be.

【0010】また、MHの粉末が電極に付着し易い場合
は、水素放出時にMHのレベルが降下してもMHが電極
に付着して残ることがあるので、正しい水素残量を検知
することができなくなる恐れがある。それを予防するに
は、電極板の絶縁コーティング材をフッ素樹脂等の摩擦
係数の小さい材質にするとよい。また、大流量の水素を
充填、放出する際に、微粉状のMHがMHタンク内の空
間に飛散することによって、電極間の静電容量に誤差を
生じる恐れがあるときは、MH中にシリコーンオイル等
を含浸し、飛散を抑えてもよい。
When the MH powder easily adheres to the electrode, the MH may adhere and remain on the electrode even if the level of MH drops during hydrogen release, so that the correct hydrogen remaining amount can be detected. You may not be able to. To prevent this, the insulating coating material of the electrode plate may be made of a material having a small friction coefficient such as fluororesin. In addition, when a large amount of hydrogen is filled and released, fine powder MH may scatter into the space inside the MH tank, which may cause an error in the capacitance between the electrodes. It may be impregnated with oil or the like to suppress scattering.

【0011】図3に本発明の第2の実施例の全体構成図
を示す。本実施例と第1の実施例の違いは、2枚の電極
板4a,4b間の静電容量の変化を検出するかわりに、
1本の電極棒20aと、電極棒のまわりのMHタンク1
の内壁との間の静電容量の変化によって、MH2の体積
変化を検出するところにある。なお、MH2は導電体で
あるから、電極棒20aとMHタンク1の内壁には絶縁
コーティングを施こして、直接に電流が流れないように
している。この方式によっても第1の実施例と略同様な
効果が得られる。
FIG. 3 shows the overall configuration of the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that instead of detecting the change in capacitance between the two electrode plates 4a and 4b,
One electrode rod 20a and MH tank 1 around the electrode rod
The change in the volume of MH2 is detected by the change in the capacitance between the inner wall of the MH2. Since MH2 is a conductor, an insulating coating is applied to the electrode rod 20a and the inner wall of the MH tank 1 to prevent current from flowing directly. With this method, substantially the same effect as that of the first embodiment can be obtained.

【0012】図4に本発明の第3の実施例の全体構成を
示す。本実施例は第1及び第2の実施例における静電容
量式レベルセンサのかわりに超音波式レベルセンサ11
を装着した例である。センサ11よりMHタンク1内の
上部空間に発射される超音波が、充填されたMHの上面
で反射し、同じセンサ11で受信されるまでのエコー時
間を検出回路12で電気信号に変換し、図5に示す水素
残量とエコー時間の関係をもとに演算回路13にて水素
残量を演算し、表示部7に表示する。
FIG. 4 shows the overall construction of the third embodiment of the present invention. In this embodiment, an ultrasonic type level sensor 11 is used instead of the capacitance type level sensor in the first and second embodiments.
This is an example of wearing. The ultrasonic wave emitted from the sensor 11 to the upper space in the MH tank 1 is reflected on the upper surface of the filled MH, and the echo time until it is received by the same sensor 11 is converted into an electric signal by the detection circuit 12, The calculation circuit 13 calculates the hydrogen remaining amount based on the relationship between the hydrogen remaining amount and the echo time shown in FIG.

【0013】本実施例によれば、超音波式レベルセンサ
11はMH2と非接触状態でそのレベルを検出すること
ができるので、センサ11へのMHの付着による誤差が
小さいこと、及びMHが膨張した時でも、MHの粉粒体
圧によってセンサが破損するような恐れがないこと、等
の利点がある。
According to this embodiment, since the ultrasonic level sensor 11 can detect the level of the MH2 in a non-contact state, the error due to the MH adhering to the sensor 11 is small and the MH expands. Even if it is done, there is an advantage that the sensor is not likely to be damaged by the powder and granular material pressure of MH.

【0014】図6に、本発明における第4の実施例の構
成図を示す。14aはMH成形体であって、MHタンク
1内に充填されているMHと同種の金属粉末表面にニッ
ケルメッキを施こした上で棒状にプレス成形したもので
ある。MH成形体14aは筒状のケーシング14b内に
おいて、スプリング14cによって一方に押圧されるこ
とによって固定されている。なお、ケーシング14b
の、MH成形体14aが挿入されている部分は、ステン
レス鋼の焼結体等の多孔質のフィルタ構造となってお
り、水素ガスのみを透過させてMH成形体14aに自由
に導入することができるようになっている。また、ケー
シング14bとMHタンク1との間はシール材14eを
使用して気密を保つようになっている。ギャップ検出コ
イル14dはケーシング14bに固定されており、検出
回路15により高周波電流が印加されている。ギャップ
検出コイル14dとMH成形体14aに距離変化が生ず
ると、検出コイル14dのインダクタンスが変化し、変
化したインダクタンスは検出回路15において直流電圧
の信号に変換される。16は演算回路であり、図7に示
す水素残量とインダクタンスの関係より水素残量を演算
し、表示部7に表示させる。
FIG. 6 shows a block diagram of the fourth embodiment of the present invention. Reference numeral 14a denotes an MH compact, which is obtained by nickel-plating the surface of the metal powder of the same kind as that of the MH filled in the MH tank 1 and press-molding it into a rod shape. The MH molded body 14a is fixed by being pressed to one side by a spring 14c in a cylindrical casing 14b. Incidentally, the casing 14b
The portion in which the MH molded body 14a is inserted has a porous filter structure such as a sintered body of stainless steel, and it is possible to allow only hydrogen gas to permeate and be freely introduced into the MH molded body 14a. You can do it. A sealant 14e is used between the casing 14b and the MH tank 1 to keep airtightness. The gap detection coil 14d is fixed to the casing 14b, and a high frequency current is applied by the detection circuit 15. When the distance between the gap detection coil 14d and the MH molded body 14a changes, the inductance of the detection coil 14d changes, and the changed inductance is converted into a DC voltage signal in the detection circuit 15. Reference numeral 16 denotes an arithmetic circuit, which calculates the remaining hydrogen amount from the relationship between the remaining hydrogen amount and the inductance shown in FIG.

【0015】次に本実施例の水素残量検出装置の作動を
説明する。MHタンク1内に高圧水素ボンベ10から水
素が充填されると、ケーシング14b内部にも水素が透
過して導入され、MH成形体14aが水素を吸蔵するた
め、MH成形体14aが伸張し、ギャップ検出コイル1
4dとの距離が縮少してコイル14dのインダクタンス
が増加する。また、水素エンジン等へMHタンク1から
水素が供給されると、MH成形体14aから水素が解離
するため、MH成形体14aが縮少し、ギャップ検出コ
イル14dとの距離が増大してコイル14dのインダク
タンスが減少する。この際のインダクタンスを検出回路
15によって電気信号に変換し、演算回路16にて水素
残量を演算し表示部7に表示する。
Next, the operation of the hydrogen remaining amount detecting apparatus of this embodiment will be described. When the MH tank 1 is filled with hydrogen from the high-pressure hydrogen cylinder 10, hydrogen is also permeated and introduced into the casing 14b, and the MH molded body 14a absorbs hydrogen, so that the MH molded body 14a expands and a gap is generated. Detection coil 1
The inductance of the coil 14d increases as the distance from 4d decreases. Further, when hydrogen is supplied from the MH tank 1 to a hydrogen engine or the like, hydrogen is dissociated from the MH molded body 14a, so that the MH molded body 14a shrinks and the distance to the gap detection coil 14d increases, so Inductance is reduced. The inductance at this time is converted into an electric signal by the detection circuit 15, and the remaining amount of hydrogen is calculated by the calculation circuit 16 and displayed on the display unit 7.

【0016】[0016]

【発明の効果】本発明によれば、水素残量を0%〜10
0%の全域にわたってリアルタイムに検出することがで
きるため、例えば水素自動車の燃料タンクとして使用さ
れるMHタンクに適用すれば、常に現在の水素残量を検
知することができ、走行中の不意の燃料切れを防ぐこと
ができる。
According to the present invention, the residual hydrogen amount is 0% to 10%.
Since it can be detected in real time over the entire range of 0%, if it is applied to, for example, an MH tank used as a fuel tank of a hydrogen automobile, it is possible to always detect the current remaining hydrogen amount, and sudden fuel during running can be detected. It can prevent breakage.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の水素残量検出装置の第1実施例を示す
全体構成図である。
FIG. 1 is an overall configuration diagram showing a first embodiment of a hydrogen remaining amount detecting device of the present invention.

【図2】図1の静電容量式レベルセンサが検出する静電
容量と水素残量との関係を示す特性図である。
FIG. 2 is a characteristic diagram showing the relationship between the electrostatic capacity detected by the electrostatic capacity type level sensor of FIG. 1 and the remaining hydrogen amount.

【図3】本発明の水素残量検出装置の第2実施例を示す
全体構成図である。
FIG. 3 is an overall configuration diagram showing a second embodiment of the hydrogen remaining amount detecting device of the present invention.

【図4】本発明の水素残量検出装置の第3実施例を示す
全体構成図である。
FIG. 4 is an overall configuration diagram showing a third embodiment of the hydrogen remaining amount detecting device of the present invention.

【図5】図4の超音波式レベルセンサが検出するエコー
時間と水素残量との関係を示す特性図である。
5 is a characteristic diagram showing the relationship between the echo time detected by the ultrasonic level sensor of FIG. 4 and the remaining hydrogen amount.

【図6】本発明の水素残量検出装置の第4実施例を示す
全体構成図である。
FIG. 6 is an overall configuration diagram showing a fourth embodiment of the hydrogen remaining amount detecting device of the present invention.

【図7】図6のギャップ検出コイルのインダクタンスと
水素残量との関係を示す特性図である。
7 is a characteristic diagram showing the relationship between the inductance of the gap detection coil of FIG. 6 and the remaining amount of hydrogen.

【符号の説明】[Explanation of symbols]

1…MHタンク 2…粉末状MH 3…熱交換器 4…静電容量式レベルセンサ 4a,4b…電極板 5…検出回路 6…演算回路 7…表示部 8a,8b…ストップ弁 9a,9b…レギュレータ 10…高圧水素ボンベ 11…超音波式レベルセンサ 12…検出回路 13…演算回路 14a…MH成形体 14b…ケーシング 14c…スプリング 14d…ギャップ検出コイル 14e…シール材 14f…リード線 15…検出回路 16…演算回路 20…静電容量式レベルセンサ(単極式) 20a…電極棒 DESCRIPTION OF SYMBOLS 1 ... MH tank 2 ... Powdered MH 3 ... Heat exchanger 4 ... Capacitance type level sensor 4a, 4b ... Electrode plate 5 ... Detection circuit 6 ... Arithmetic circuit 7 ... Display part 8a, 8b ... Stop valve 9a, 9b ... Regulator 10 ... High-pressure hydrogen cylinder 11 ... Ultrasonic level sensor 12 ... Detection circuit 13 ... Calculation circuit 14a ... MH molded body 14b ... Casing 14c ... Spring 14d ... Gap detection coil 14e ... Seal material 14f ... Lead wire 15 ... Detection circuit 16 ... Arithmetic circuit 20 ... Capacitance type level sensor (unipolar type) 20a ... Electrode rod

───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田 潤 愛知県西尾市下羽角町岩谷14番地 株式会 社日本自動車部品総合研究所内 (72)発明者 鬼頭 修 愛知県豊田市トヨタ町1番地 トヨタ自動 車株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Jun Yamada 14 Iwatani, Shimohakaku-cho, Nishio-shi, Aichi Japan Auto Parts Research Institute (72) Inventor Osamu Kito 1 Toyota-cho, Toyota-shi, Aichi Prefecture Toyota Automobile Within the corporation

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 金属水素化物を収容している金属水素化
物タンクに設けられ金属水素化物の体積変化を検出する
手段と、該手段によって検出される金属水素化物の体積
変化から金属水素化物に吸蔵されている水素の残量を演
算する手段とを備えていることを特徴とする水素残量検
出装置。
1. A means for detecting a volume change of a metal hydride provided in a metal hydride tank containing a metal hydride, and a metal hydride occlusion based on the volume change of the metal hydride detected by the means. And a means for calculating the remaining amount of hydrogen stored therein.
JP02272592A 1991-07-03 1992-02-07 Hydrogen remaining detector Expired - Fee Related JP3147968B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP02272592A JP3147968B2 (en) 1992-02-07 1992-02-07 Hydrogen remaining detector
US07/908,270 US5305714A (en) 1991-07-03 1992-07-02 Fuel supply system for an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02272592A JP3147968B2 (en) 1992-02-07 1992-02-07 Hydrogen remaining detector

Publications (2)

Publication Number Publication Date
JPH05223012A true JPH05223012A (en) 1993-08-31
JP3147968B2 JP3147968B2 (en) 2001-03-19

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Country Status (1)

Country Link
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07101316A (en) * 1993-09-30 1995-04-18 Mazda Motor Corp Hydrogen filling station
JP2003270190A (en) * 2002-03-18 2003-09-25 Japan Steel Works Ltd:The Hydrogen residue detection method and its device
WO2008096651A1 (en) * 2007-02-06 2008-08-14 The Japan Steel Works, Ltd. Hydrogen filling apparatus
JP2008196903A (en) * 2007-02-09 2008-08-28 Niigata Univ Hydrogen quantity sensor
JP2010515013A (en) * 2006-12-22 2010-05-06 オングストローム パワー インク. Charge status indicator and related method
US8656793B2 (en) 2006-12-22 2014-02-25 Societe Bic State of charge indicator and methods related thereto

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002277427A (en) * 2001-03-21 2002-09-25 Kawata Mfg Co Ltd Dielectric physical property measuring instrument

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07101316A (en) * 1993-09-30 1995-04-18 Mazda Motor Corp Hydrogen filling station
JP2003270190A (en) * 2002-03-18 2003-09-25 Japan Steel Works Ltd:The Hydrogen residue detection method and its device
JP2010515013A (en) * 2006-12-22 2010-05-06 オングストローム パワー インク. Charge status indicator and related method
US8656793B2 (en) 2006-12-22 2014-02-25 Societe Bic State of charge indicator and methods related thereto
WO2008096651A1 (en) * 2007-02-06 2008-08-14 The Japan Steel Works, Ltd. Hydrogen filling apparatus
JP2008190658A (en) * 2007-02-06 2008-08-21 Japan Steel Works Ltd:The Hydrogen filling device
US8408254B2 (en) 2007-02-06 2013-04-02 The Japan Steel Works, Ltd. Hydrogen filling apparatus
JP2008196903A (en) * 2007-02-09 2008-08-28 Niigata Univ Hydrogen quantity sensor
JP4538640B2 (en) * 2007-02-09 2010-09-08 国立大学法人 新潟大学 Hydrogen sensor

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