JP2003331930A - Feeding system - Google Patents

Feeding system

Info

Publication number
JP2003331930A
JP2003331930A JP2002135137A JP2002135137A JP2003331930A JP 2003331930 A JP2003331930 A JP 2003331930A JP 2002135137 A JP2002135137 A JP 2002135137A JP 2002135137 A JP2002135137 A JP 2002135137A JP 2003331930 A JP2003331930 A JP 2003331930A
Authority
JP
Japan
Prior art keywords
power
secondary battery
external load
fuel cell
soc
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.)
Pending
Application number
JP2002135137A
Other languages
Japanese (ja)
Inventor
Hiroyuki Jinbo
Kiichi Koike
Shinji Miyauchi
Tetsuya Ueda
哲也 上田
伸二 宮内
喜一 小池
裕行 神保
Original Assignee
Matsushita Electric Ind Co Ltd
松下電器産業株式会社
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 Matsushita Electric Ind Co Ltd, 松下電器産業株式会社 filed Critical Matsushita Electric Ind Co Ltd
Priority to JP2002135137A priority Critical patent/JP2003331930A/en
Publication of JP2003331930A publication Critical patent/JP2003331930A/en
Application status is Pending legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/50Fuel cells

Abstract

<P>PROBLEM TO BE SOLVED: To provide a feeding system constructed by combining an electricity generating means of a fuel cell or the like and a secondary cell which can restrain the lowering of feeding efficiency even when the load quality is sharply lowered. <P>SOLUTION: For the feeding system constructed by combining the electricity generating means of the fuel cell or the like and the secondary cell, temporal fluctuation of the power consumption of an external load is measured, and a fluctuation pattern of the power consumption is estimated depending on the result, and an SOC rise control is carried out for the fluctuation pattern prior to the time when the value of the power consumption of an external load becomes lower than a prescribed value. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、燃料電池、マイクロガスタービン等の発電手段と二次電池とを組み合わせて用いるコージェネレーションシステム等の給電システムに関するものである。 BACKGROUND OF THE INVENTION [0001] [Technical Field of the Invention The present invention is a fuel cell, relates feed system, such as a cogeneration system using a combination of a power generator and a secondary battery such as a micro gas turbine is there. 【0002】 【従来の技術】近年、効率的なエネルギー利用の視点から、燃料電池やマイクロガスタービンを用いた給電システムが注目されてきている。 [0002] In recent years, from the viewpoint of efficient energy utilization, feed systems using fuel cells and micro gas turbine has been paid attention. しかしながら、燃料電池は負荷の変動に対する出力応答性に劣るという問題がある。 However, the fuel cell has a problem that it is inferior to the output responsiveness to load fluctuations. したがって、燃料電池と二次電池とを組み合わせ、 Thus, combining a fuel cell and a secondary battery,
負荷変動を二次電池で補償する方法が検討されてきた。 Method of compensating for load variations in the secondary battery has been studied.
このような二次電池は通常時には充電状態(SOC)を50%〜90%程度の部分充電状態に制御され、燃料電池から余剰電力が発生した場合は、この余剰電力で二次電池を充電し、燃料電池の出力が負荷に対して不足する場合には、二次電池からこの不足電力を補う。 Such secondary batteries in a normal controlled state of charge (SOC) to partially charged state of about 50% to 90%, when the surplus power from the fuel cell is generated to charge the rechargeable battery at this excess power , if the output of the fuel cell is insufficient for the load, it makes up for this lack power from the secondary battery. このような構成では燃料電池からの余剰電力を回収することにより給電システムの効率を高めることができる。 In such an arrangement it is possible to improve the efficiency of the power supply system by recovering surplus power from the fuel cell. 【0003】また、燃料電池の出力に対して極端に負荷が少なくなった場合は燃料電池への燃料ガスと酸化剤の供給を制限して燃料電池の出力を低下させる制御が行われるものの、低率放電の領域は燃料電池の発電効率が低下し、結果として給電システム全体の効率が低下するという課題があった。 [0003] Although the case where extremely load to the output of the fuel cell is low control for reducing the output of fuel gas and to limit the supply of oxidant fuel cell to the fuel cell is performed, the low area rate discharge decreases the power generation efficiency of the fuel cell, the efficiency of the entire power supply system as a result there has been a problem of a decrease. 【0004】 【発明が解決しようとする課題】本発明は前記したような燃料電池等の発電手段と二次電池とを組み合わせた給電システムにおいて、負荷量が極端に低下した場合での効率の低下を抑制することを目的とする。 [0004] The present invention 0006] In power supply system that combines the power generator and a secondary battery such as a fuel cell as described above, reduction in efficiency in the case where load is extremely low an object of the present invention is to suppress. 【0005】 【課題を解決するための手段】前記した課題を解決するために、本発明の請求項1に係る発明は、発電手段と二次電池とを備えて外部負荷に給電し、外部負荷の消費電力が発電手段の最大出力値以下に設定される特定出力値未満に相当する場合、発電手段により二次電池を充電するとともに、外部負荷に電力を供給し、外部負荷の消費電力が前記特定出力を上回ったとき、二次電池から外部負荷に出力を補う給電システムであって、二次電池の充電状態(SOC)は発電手段からの電力を充電できるよう、中間充電状態で制御され、外部負荷への消費電力が所定値以下に減少した場合に、発電手段の運転を停止するとともに、二次電池から外部負荷へ給電を行い、外部負荷の消費電力の時間変化を計測し、その計測結果から消費 [0005] In order to solve the above [Means for Solving the Problems] The invention according to claim 1 of the present invention is to supply power to an external load and a power generator and a secondary battery, the external load If the power consumption of corresponding below a certain output value set below the maximum output value of the power generation means, as well as charge the secondary battery by the power generation unit supplies power to the external load, the power consumption of the external load the when exceeding a specific output, a power supply system to compensate for the output from the secondary battery to the external load, the state of charge of the secondary battery (SOC) is to be charged with electric power from the power generation means is controlled in an intermediate state of charge, If the power consumption of the external load is reduced below a predetermined value, it stops the operation of the power unit performs the power supply from the secondary battery to the external load, by measuring the time variation of the power consumption of the external load, the measurement consumption from the results 電力の変動パターンを予測し、変動パターンにおいて、外部負荷の消費電力が所定値以下に減少する時刻以前にSOCを上昇するようSOC上昇制御を行うことを特徴とする給電システムを示すものである。 It predicts the power variation pattern in the variation pattern shows a power supply system which is characterized in that the SOC increase control so that the power consumption of the external load is increased the SOC before time decreases below a predetermined value. 【0006】また、本発明の請求項2に係る発明は、請求項1の構成を備えた給電システムにおいて発電手段として燃料電池を用いることを特徴とするものである。 [0006] The invention according to claim 2 of the present invention is characterized by using a fuel cell as a power generator in the power supply system having a structure of claim 1. 【0007】また、本発明の請求項3に係る発明は、請求項1もしくは2の構成を備えた給電システムにおいて、発電手段の停止中において、SOCが所定値以下となった場合に、発電手段を起動して二次電池を充電してSOC上昇制御を行うことを特徴とするものである。 [0007] The invention according to claim 3 of the present invention, in the power supply system having a configuration according to claim 1 or 2, during the stop of the power generation unit, when the SOC is equal to or less than the predetermined value, the power generation means charge the battery to start the is characterized in performing the SOC increase control. 【0008】本発明の請求項4に係る発明は、請求項3 [0008] The invention according to claim 4 of the present invention, according to claim 3
の構成を備えた給電システムにおいて、発電手段として燃料電池を用いた場合に、燃料電池の起動後に燃料電池の最大出力で運転制御することを特徴とするものである。 In the power supply system having a configuration, in the case of using a fuel cell as a power generation means, it is characterized in that the operation control after starting the fuel cell at the maximum output of the fuel cell. 【0009】さらに本発明の請求項5に係る発明は、請求項1、2、3もしくは4の構成を備えた給電システムにおいて、前記SOC上昇制御に引き続いて二次電池を過充電することを特徴とするものである。 Furthermore the invention according to claim 5 of the present invention, characterized in that in the power supply system having a configuration according to claim 1, 2, 3 or 4, overcharging the battery subsequently to the SOC increase control it is an. 【0010】そして本発明の請求項6に係る発明は、請求項5の構成を備えた給電システムにおいて、過充電をSOC上昇制御の所定回数毎に行うことを特徴とするものである。 [0010] The invention according to claim 6 of the present invention, in the power supply system having a configuration according to claim 5, is characterized in that performing the overcharge every predetermined number of the SOC increase control. 【0011】 【発明の実施の形態】本発明の実施の形態による給電システムを図面を用いて説明する。 [0011] will be described with reference to the drawings the feeding system according to an embodiment of the embodiment of the present invention. 【0012】燃料電池1の出力はDC−DCコンバータ2で変圧され、インバータ3により交流電力に変換され負荷4に供給される。 [0012] The output of the fuel cell 1 is transformed by a DC-DC converter 2 and is converted into AC power by the inverter 3 is supplied to the load 4. 負荷4の消費電力が燃料電池1の効率的な連続運転に適した特定出力未満に相当する場合、すなわち、負荷4の消費電力にDC−DCコンバータ2、インバータ3等の電力損失を加えた電力が燃料電池1の特定出力未満である場合、燃料電池1の余剰電力を充電制御手段5を介して接続された二次電池6に蓄積する。 Power power consumption of the load 4 may correspond to less than the specific output suitable for efficient continuous operation of the fuel cell 1, i.e., the DC-DC converter 2 to the power consumption of the load 4, plus power loss of the inverter 3 etc. There is less than a specific output of the fuel cell 1, stores the surplus power of the fuel cell 1 to the secondary battery 6 connected via the charging control means 5. 燃料電池1の出力が負荷4の消費電力に対して不足する場合、スイッチ11が閉じられ、二次電池6からインバータ3を介して負荷4に出力が補充される。 If the output of the fuel cell 1 is insufficient for the power consumption of the load 4, the switch 11 is closed, the output to the load 4 is replenished through the inverter 3 from the secondary battery 6. 【0013】なお、二次電池6の充電状態(State [0013] In addition, the state of charge of the secondary battery 6 (State
of charge、SOC)はSOC検出手段9により検出されるとともに、そのSOC検出値に基づき、 of charge, SOC) together with is detected by the SOC detector 9, on the basis of the SOC detected value,
充電制御手段5によって二次電池6のSOCを所定範囲内に制御する。 By the charge control unit 5 for controlling the SOC of secondary battery 6 within a predetermined range. 二次電池6は燃料電池1の余剰電力を蓄積する必要上、SOCは例えば50〜90%程度の中間充電状態に制御する。 Secondary battery 6 on the need to accumulate excess electric power of the fuel cell 1, SOC is controlled to an intermediate state of charge, for example, about 50-90%. SOCの検知方法としては様々な方法が適用可能であるが、例えば二次電池6の充電電流と放電電流を積算することにより検知することができる。 Although various methods as a method of detecting SOC are applicable, it can be detected by integrating the example charging current and the discharging current of the secondary battery 6. 【0014】本発明においては負荷の消費電力の経時変化を計測する負荷計測手段7を有し、この消費電力の経時変化データから、消費電力の経時変化を予測手段8で予測する。 [0014] In the present invention has a load measuring unit 7 for measuring the time course of the power consumption of the load, the time course data of the power consumption is predicted by the prediction means 8 changes with time in power consumption. 家屋、店舗あるいは工場等の建物に電力を供給する場合、電力消費パターンにある程度の傾向が見られる。 House, if you want to supply power to the building, such as a shop or a factory, a certain amount of trend in power consumption pattern is seen. 本発明においてはこの消費電力の経時変化予測から、消費電力が燃料電池出力に対して極端に低下する時間帯を予測する。 From time course prediction of the power consumption in the present invention, power consumption predicting a time zone of extremely reduced with respect to the fuel cell output. 例えばT 1時からT 2時にかけて消費電力が燃料電池1の特定出力の5%未満になると予測した場合、この予測信号に基づき、T 1時のΔT時間以前、 For example, when the power consumption from time T 1 toward time T 2 is expected to be less than 5% of the specific output of the fuel cell 1, based on the prediction signal, [Delta] T time earlier at T 1,
すなわち(T 1 −ΔT)時から充電制御手段5が二次電池のSOCを増加させるよう、充電(以下、SOC上昇制御)を行う。 That (T 1 -.DELTA.T) charge control unit 5 when the to increase the SOC of the secondary battery to charge (hereinafter, SOC increase control). 【0015】そして、負荷計測手段7による計測の結果、実際に負荷4の消費電力が特定出力の5%未満になった時点で、制御信号が燃料電池制御手段10に送られ、燃料電池制御手段10はこの制御信号に基づいて燃料電池1の運転を停止する。 [0015] As a result of measurement by the load measuring means 7, actually when power consumption of the load 4 becomes less than 5% of the specified output, a control signal is sent to the fuel cell control means 10, the fuel cell control means 10 stops the operation of the fuel cell 1 based on the control signal. 燃料電池1の停止後は二次電池6の出力のみで負荷4を動作させる。 After stopping the fuel cell 1 operates the load 4 in only the output of the secondary battery 6. 【0016】このような構成により、燃料電池出力に対して負荷の消費電力が少ない場合に、発電効率の低下した燃料電池を停止させて、二次電池から効率良く給電することができる。 [0016] With this configuration, when the power consumption of the load to the fuel cell output is low, to stop the reduced fuel cell power generation efficiency can be efficiently powered by rechargeable batteries. また、二次電池単独の給電に入る以前の段階で二次電池のSOCをあらかじめ上昇させることによって、負荷への給電に必要な電力を二次電池に確保することが可能である。 Furthermore, by previously increasing the SOC of the secondary battery at a stage before entering the feed of the secondary battery alone, it is possible to secure the power necessary to power the load to the secondary battery. 【0017】ここで二次電池単独の給電に入る消費電力は燃料電池の発電効率を勘案して設定する。 [0017] Here, power entering the feed of the secondary battery itself is set in consideration of the power generation efficiency of the fuel cell. また、負荷変動パターンの予測方法としては種々の方法が考えられるが、例えばある負荷変動パターンを所定の日数(N Although a method of predicting the load change pattern various methods are conceivable, for example, load variation pattern a predetermined number of days (N
日)で平均して予測パターンとすることができる。 It is possible to the predicted pattern on average in the day). また、季節変化等により負荷変動パターンも変化することを勘案し、N日の負荷変動パターンを平均して得た予測パターン(PP1)と次のN日の負荷変動パターンを平均して得た実績パターン(PA1)を求め、予測パターン(PP1)と実績パターン(PA1)とを平均して更新された予測パターン(PP2)を用いることができる。 Further, considering that the change load variation pattern due to seasonal variation, etc., was obtained by averaging the predicted pattern obtained by averaging the load variation pattern of N days and (PP1) load variation pattern of the next N days results determined pattern (PA1), can be used prediction pattern (PP1) and actual pattern (PA1) prediction pattern the updated average (PP2). このような方法によれば、季節変動による負荷変動パターンの変化に対応し、予測をより精度よく、行うことが可能となる。 According to this method, in response to changes in the load variation pattern according to seasonal variations, more accurately predicted, it is possible to perform. 【0018】さらに好ましい本発明の実施の形態においては、燃料電池1の運転を停止した後の二次電池6による単独給電時において、二次電池6のSOC低下をSO [0018] In a further preferred embodiment of the present invention, when single power supply by the secondary battery 6 after stopping the operation of the fuel cell 1, the SOC decrease of the secondary battery 6 SO
C検出手段9によりモニターし、所定のSOC値まで低下した時点で燃料電池制御手段10からの起動信号により燃料電池1を再起動し、二次電池6による単独給電から燃料電池1からの給電に切替えるとともに、燃料電池1を最も効率の良い定格出力で運転を行い、余剰出力で二次電池6を充電する。 Was monitored by C detection means 9, the feeding of the fuel cell 1 is restarted, the fuel cell 1 from a single power supply by the secondary battery 6 by the activation signal from the fuel cell control means 10 at the time when lowered to a predetermined SOC value with switch performs operation of the fuel cell 1 in the most efficient rated output, it charges the secondary battery 6 by excess power. 【0019】また、特に二次電池として鉛蓄電池を用いる場合、(T 1 −ΔT)時から開始される二次電池のS Further, particularly when using lead-acid batteries as secondary batteries, the secondary battery starts when (T 1 -ΔT) S
OC上昇制御の所定回数毎に二次電池のSOCを100 Every predetermined number of OC increase control 100 the SOC of the rechargeable battery
まで上昇させて完全充電状態とした後、さらに所定電気量で二次電池を過充電することが好ましい。 After the fully charged state is increased to, it is preferable to overcharge of the secondary battery further at a predetermined quantity of electricity. 鉛蓄電池、 Lead-acid battery,
特に極板群から遊離する電解液を殆ど有しないよう、電解液量を制限した構成の制御弁式鉛蓄電池を中間充電状態で使用しつづけた場合、活物質中に存在する放電生成物である硫酸鉛の結晶が粗大化する。 Especially have little so the electrolyte liberated from the electrode plate group, if continued to use an intermediate state of charge a valve-regulated lead-acid battery configuration with a limited electrolyte volume is the discharge product present in the active material crystals of lead sulfate is coarse. その結果、電池の充電受入性が低下し、電池の容量低下が急速に進行する。 This reduces the charge acceptance of the battery, decrease the capacity of the battery progresses rapidly. 【0020】好ましい本発明の実施形態において、このような硫酸鉛結晶の粗大化が回復不能になる以前の段階で前記したようなSOC上昇制御の後に鉛蓄電池を過充電することにより硫酸鉛結晶を強制的に活物質にさせることにより、硫酸鉛結晶の粗大化とこれによる容量低下を抑制することができる。 [0020] In embodiments of the preferred invention, the lead sulfate crystals by overcharging the lead-acid battery after the SOC increase control as above in the previous stage of such coarsening of lead sulfate crystals are unrecoverable by forcibly to the active material, it is possible to suppress the capacity reduction due to this and coarsening of lead sulfate crystals. 【0021】このような過充電はSOCを100%とした後に、0.1CA〜0.2CA程度の定電流で二次電池容量の10〜30%程度に相当する電気量を充電することによって行うことができる。 [0021] carried out by after such overcharging and 100% SOC, charging the electric quantity corresponding to about 10 to 30% of the secondary battery capacity 0.1CA~0.2CA about constant current be able to. また、このような過充電を行う頻度としては使用する鉛蓄電池の特性によって異なるが通常1ヶ月に1回程度で設定する。 Although different depending on the characteristics of the lead-acid battery to be used as a frequency of performing such overcharging set at about once normal 1 month. したがって、例えば1日に1回の頻度でSOC上昇制御を行う場合、SOC上昇制御の30回毎に1回の過充電を行えばよい。 Thus, for example, when performing SOC increase control at a frequency of once a day, it may be performed overcharge of once every 30 times of SOC increase control. SOC上昇制御の後にSOCはもともと上昇しているので、二次電池を過充電に必要な時間を削減することができ、極めて好都合である。 Since the SOC originally raised after the SOC increase control, it is possible to reduce the time required for the secondary battery to overcharging, it is very convenient. 【0022】なお、本発明の実施の形態による給電システムの構成例を図1に示したが、本発明の実施の形態で記した動作を実現するものであれば良く、本発明は図1 [0022] Incidentally, a configuration example of a feed system according to an exemplary embodiment of the present invention is shown in FIG. 1, as long as it realizes the operations noted in the embodiment of the present invention, the invention Figure 1
に示した構成のものに限定されるものではない。 It is not limited to the configuration shown in. 【0023】 【発明の効果】以上説明してきたように、本発明の構成によれば燃料電池等の発電手段と二次電池とを組み合わせた給電システムにおいて、負荷量が極端に低下した場合において、発電手段からの給電を停止して二次電池単独で給電を行うことにより、給電効率を高めることができる。 [0023] As has been described above, according to the present invention, in the power generation unit and power supply system which combines a secondary battery such as a fuel cell according to the configuration of the present invention, when the load is extremely lowered, by performing the feeding in secondary batteries alone to stop power supply from the power generating means, it is possible to increase the feed efficiency. さらに、二次電池単独の給電において二次電池のSOCを高く設定しているので、二次電池単独の給電時間を長く設定することができる。 Further, since the set high SOC of the secondary battery in the power supply of the secondary battery alone, it is possible to set longer the battery alone power supply time. また二次電池として鉛蓄電池を用いた場合、定期的な過充電を行うことによって、電池の容量低下を抑制でき、信頼性が高い、効率に優れた給電システムを提供できることから、工業上、極めて有用である。 In the case of using a lead-acid battery as a secondary battery, by performing regular overcharge, it can suppress the reduction capacity of the battery, reliable, because it can provide excellent power supply system efficiency, industrial, very it is useful.

【図面の簡単な説明】 【図1】本発明の実施の形態による給電システムの構成を示す図【符号の説明】 1 燃料電池2 DC−DCコンバータ3 インバータ4 負荷5 充電制御手段6 二次電池7 負荷計測手段8 負荷変動パターン予測手段9 SOC検出手段10 燃料電池制御手段11 スイッチ BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a configuration of a power feeding system according to an exemplary embodiment of the present invention DESCRIPTION OF REFERENCE NUMERALS 1 fuel cell 2 DC-DC converter 3 inverter 4 load 5 charge control means 6 rechargeable battery 7 the load determining means 8 load fluctuation pattern predicting means 9 SOC detecting unit 10 fuel cell control means 11 switches

───────────────────────────────────────────────────── フロントページの続き (72)発明者 上田 哲也 大阪府門真市大字門真1006番地 松下電器 産業株式会社内(72)発明者 宮内 伸二 大阪府門真市大字門真1006番地 松下電器 産業株式会社内Fターム(参考) 5G003 AA05 BA01 CA01 CA11 CC02 DA07 DA18 EA05 GB03 GB06 GC05 5H027 DD03 KK51 MM01 5H030 AA01 AS03 BB08 BB10 FF41 FF52 ────────────────────────────────────────────────── ─── of the front page continued (72) inventor Tetsuya Ueda Osaka Prefecture Kadoma Oaza Kadoma in 1006 address Matsushita Electric industrial Co., Ltd. (72) inventor Shinji Miyauchi Osaka Prefecture Kadoma Oaza Kadoma in 1006 address Matsushita Electric industrial Co., Ltd. F term (reference) 5G003 AA05 BA01 CA01 CA11 CC02 DA07 DA18 EA05 GB03 GB06 GC05 5H027 DD03 KK51 MM01 5H030 AA01 AS03 BB08 BB10 FF41 FF52

Claims (1)

  1. 【特許請求の範囲】 【請求項1】 発電手段と二次電池とを備えて外部負荷に給電し、前記外部負荷の消費電力が前記発電手段の最大出力値以下に設定される特定出力値未満に相当する場合、前記発電手段により前記二次電池を充電するとともに、前記外部負荷に電力を供給し、前記外部負荷の消費電力が前記特定出力を上回ったとき、前記二次電池から前記外部負荷に出力を補う給電システムであって、 前記二次電池の充電状態(SOC)は前記発電手段からの電力を充電できるよう、中間充電状態で制御され、 前記外部負荷の消費電力が所定値以下に減少した場合に、前記発電手段の運転を停止するとともに、前記二次電池から前記外部負荷へ給電を行い、 前記外部負荷への消費電力の時間変化を計測し、その計測結果から消費電力の [Claims 1] and a power generator and a secondary battery to supply power to an external load, the external load below a certain output value power is set below the maximum output value of the power generation means If equivalent to, with charging the secondary battery by the power generating means, the supply power to an external load, when the power consumption of the external load is above said certain output, the external load from said secondary battery a power supply system to compensate for the output, the state of charge of the secondary battery (SOC) is to be charged with electric power from said power generating means is controlled in an intermediate state of charge, the power consumption of the external load is below a predetermined value if decreased, it stops the operation of the power generating unit, from the secondary battery performs supplying power to said external load, the measured time variation of power to the external load, the measurement result from the power 動パターンを予測し、 前記変動パターンにおいて、前記外部負荷への消費電力が所定値以下に減少する時刻以前に前記SOCを上昇するようSOC上昇制御を行うことを特徴とする給電システム。 Feed system dynamic pattern predicted, in the variation pattern, the power consumption to the external load and performing SOC increase control so as to increase the SOC before time decreases below a predetermined value. 【請求項2】 前記発電手段として燃料電池を用いることを特徴とする請求項1に記載の給電システム。 2. A power supply system according to claim 1 which comprises using a fuel cell as the power generation means. 【請求項3】 前記発電手段の停止中において、前記S 3. A during the stop of the power generation unit, the S
    OCが所定値以下となった場合に、前記発電手段を起動して前記二次電池を充電して前記SOC上昇制御を行うことを特徴とする請求項1もしくは2に記載の給電システム。 Power feeding system according to claim 1 or 2 OC is characterized in that it is carried out in the case of equal to or less than a predetermined value, the start to the SOC increase control to charge the secondary battery the power generating means. 【請求項4】 前記発電手段として燃料電池を用いた場合に、燃料電池の起動後に燃料電池の最大出力で運転制御する請求項3に記載の給電システム。 Wherein said in the case of using the fuel cell as a power generation unit, power feeding system according to claim 3, after starting the fuel cell operation control at the maximum output of the fuel cell. 【請求項5】 前記SOC上昇制御に引き続いて前記二次電池を過充電することを特徴とする請求項1、2、3 5. A method according to claim, characterized in that overcharging the secondary battery subsequently to the SOC increase control 1,2,3
    もしくは4に記載の給電システム。 Or feed system according to 4. 【請求項6】 前記過充電を前記SOC上昇制御の所定回数毎に行うことを特徴とする請求項5に記載の給電システム。 6. The power supply system according to claim 5, characterized in that the overcharge every predetermined number of the SOC increase control.
JP2002135137A 2002-05-10 2002-05-10 Feeding system Pending JP2003331930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002135137A JP2003331930A (en) 2002-05-10 2002-05-10 Feeding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002135137A JP2003331930A (en) 2002-05-10 2002-05-10 Feeding system

Publications (1)

Publication Number Publication Date
JP2003331930A true JP2003331930A (en) 2003-11-21

Family

ID=29697540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002135137A Pending JP2003331930A (en) 2002-05-10 2002-05-10 Feeding system

Country Status (1)

Country Link
JP (1) JP2003331930A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006196264A (en) * 2005-01-12 2006-07-27 Toshiba Fuel Cell Power Systems Corp Fuel cell power generation system
WO2007004732A1 (en) * 2005-07-05 2007-01-11 Toyota Jidosha Kabushiki Kaisha Fuel cell system and method for measuring ac impedance
JP2008047537A (en) * 2006-08-17 2008-02-28 Samsung Sdi Co Ltd Fuel battery system and fuel battery operation method
JP2009077604A (en) * 2007-09-25 2009-04-09 Toshiba Plant Systems & Services Corp Ac input power leveling type power supply system
JP2010161073A (en) * 2009-01-07 2010-07-22 Samsung Sdi Co Ltd Fuel cell system and power management method of fuel cell
KR101211080B1 (en) 2004-06-15 2012-12-12 소니 가부시키가이샤 Power supply system and electronic device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101211080B1 (en) 2004-06-15 2012-12-12 소니 가부시키가이샤 Power supply system and electronic device
JP2006196264A (en) * 2005-01-12 2006-07-27 Toshiba Fuel Cell Power Systems Corp Fuel cell power generation system
JP4681303B2 (en) * 2005-01-12 2011-05-11 東芝燃料電池システム株式会社 Fuel cell power generator
JP2007018741A (en) * 2005-07-05 2007-01-25 Toyota Motor Corp Fuel cell system and alternating current impedance measuring method
US8889309B2 (en) 2005-07-05 2014-11-18 Toyota Jidosha Kabushiki Kaisha Fuel cell system and AC impedance measurement method
WO2007004732A1 (en) * 2005-07-05 2007-01-11 Toyota Jidosha Kabushiki Kaisha Fuel cell system and method for measuring ac impedance
US8691455B2 (en) 2006-08-17 2014-04-08 Samsung Sdi Co., Ltd. Fuel cell system and method of operating the same
JP2008047537A (en) * 2006-08-17 2008-02-28 Samsung Sdi Co Ltd Fuel battery system and fuel battery operation method
JP2009077604A (en) * 2007-09-25 2009-04-09 Toshiba Plant Systems & Services Corp Ac input power leveling type power supply system
JP2010161073A (en) * 2009-01-07 2010-07-22 Samsung Sdi Co Ltd Fuel cell system and power management method of fuel cell

Similar Documents

Publication Publication Date Title
US5334463A (en) Hybrid fuel battery system and the operation method thereof
CN1179442C (en) Method and device for charging valve-control type lead-acid accumulator
DE102006059641B4 (en) A fuel cell system and method for reducing fast voltage transients to increase the durability of the fuel cell system
US7060379B2 (en) Method and system for controlling and recovering short duration bridge power to maximize backup power
JP3869585B2 (en) Discharge method and assembled battery of the plurality of secondary batteries
Barote et al. Stand-alone wind system with vanadium redox battery energy storage
JP3687464B2 (en) Solar power generation apparatus
KR100754734B1 (en) Hybrid power supply and power management method thereof
EP0847123B1 (en) Pulse charging method and a charger
US7939213B2 (en) Fuel cell system and electric vehicle including the fuel cell system
CA2310357C (en) Battery accumulating apparatus
EP2083494B1 (en) Abnormality detecting device for storage element, abnormality detecting method for storage element, abnormality detecting program for storage element, and computer-readable recording medium storing abnormality detecting program
US6583603B1 (en) Back-up battery management apparatus and method for charging and testing battery cells in a string of battery cells
US6744237B2 (en) Hybrid power system for an electric vehicle
US7091625B2 (en) Home-use fuel cell system
EP2660943A1 (en) Power controller
CN100472869C (en) Fuel cell system and control method
US20110210614A1 (en) Power storage system and method of controlling the same
CN1314181C (en) Method for resetting battery charge state of hybrid power electric vehicle
US6781343B1 (en) Hybrid power supply device
US7244524B2 (en) Method and system for balanced control of backup power
EP2587623A1 (en) Dc power distribution system
JP2004146114A (en) Fuel cell system
KR19980027321A (en) A secondary battery charging device
JP4984207B2 (en) Redox flow battery system

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050112

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20050706

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070424

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070724

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20071120