JP2005160291A - Circuit for charging, emergency lighting device, and lighting device - Google Patents

Circuit for charging, emergency lighting device, and lighting device Download PDF

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JP2005160291A
JP2005160291A JP2004278553A JP2004278553A JP2005160291A JP 2005160291 A JP2005160291 A JP 2005160291A JP 2004278553 A JP2004278553 A JP 2004278553A JP 2004278553 A JP2004278553 A JP 2004278553A JP 2005160291 A JP2005160291 A JP 2005160291A
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charging
battery
voltage
auxiliary
intermittent
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JP4379283B2 (en
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Kimihito Sato
公仁 佐藤
Naoko Iwai
直子 岩井
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Toshiba Lighting and Technology 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To make judgment properly about the life of a battery when it is charged, to attain power saving and life prolongation. <P>SOLUTION: An arithmetic operation control unit 16 turns a switch 17 of DC power on/off from a converter circuit 15 so as to intermittently charge a battery 13. The operation control unit 16 obtains difference voltage between the battery voltage when auxiliary charge is started in the case of intermittent charge and the battery voltage when the auxiliary charge is ended. When the internal resistance value of the battery 13 obtained by dividing the difference voltage by the charge current obtains a prescribed value or more, a life of the battery is judged. When the life of the battery is judged, an output apparatus 22 informs a user of the result of judgement. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、停電時に非常灯や誘導灯に電源を供給して点灯するバッテリを充電するための充電回路、非常用点灯装置及び照明装置に関する。   The present invention relates to a charging circuit, an emergency lighting device, and a lighting device for charging a battery that is lit by supplying power to an emergency light or a guide light during a power failure.

例えば、非常灯や誘導灯等の照明装置は停電時においても所定時間は点灯維持できるように、停電時にはバッテリから電源が供給されるように構成されている。このため、バッテリには、停電が発生してから少なくとも所定時間以上にわたって照明装置を点灯できるだけの電力を充電しておく必要がある。   For example, an illumination device such as an emergency light or a guide light is configured to be supplied with power from a battery at the time of a power failure so that the lighting device can be kept on for a predetermined time even at the time of a power failure. For this reason, the battery needs to be charged with enough power to light the lighting device for at least a predetermined time after a power failure occurs.

バッテリへの充電方式としては、間欠充電とトリクル充電との２種類がある。間欠充電は初期充電で満充電状態とし、その後に休止区間を設けて休止区間に自己放電により減少した容量を休止区間の経過後に補充電で補うようにしたものであり、充電はタイマー制御にて行っている。トリクル充電は低い充電電流で連続して充電を行うことによってバッテリを常に満充電状態に維持するものである。   There are two types of battery charging methods, intermittent charging and trickle charging. Intermittent charging is a state where the initial charging is in a fully charged state, and then a pause period is provided so that the capacity reduced by self-discharge in the pause period is compensated by supplementary charging after the pause period has elapsed. Is going. In trickle charging, the battery is always kept fully charged by continuously charging with a low charging current.

二次電池（バッテリ）の充電中にその充電電流を間欠的にオン・オフさせ、充電電流がオフされる直前の電池電圧Ｖonと充電電流をオフした後の開放電池電圧Ｖoffとに従って二次電池の内部抵抗Ｒに相当する値を求め、二次電池の初期時における内部抵抗Ｒに相当する値Ｚ(int)と、最新の二次電池の内部抵抗Ｒに相当する値Ｚ(now)とを比較して二次電池の寿命を判定するようにしたものがある（例えば、特許文献１参照）。   During charging of the secondary battery (battery), the charging current is intermittently turned on / off, the secondary battery according to the battery voltage Von immediately before the charging current is turned off and the open battery voltage Voff after the charging current is turned off. A value corresponding to the internal resistance R of the secondary battery is obtained, and a value Z (int) corresponding to the initial internal resistance R of the secondary battery and a value Z (now) corresponding to the internal resistance R of the latest secondary battery are obtained. There is a battery that determines the life of a secondary battery in comparison (see, for example, Patent Document 1).

また、間欠充電を行う際に、初期充電期間における充電電流よりも大きい充電電流を流して二次電池を補充電するとともに、初期充電期間よりも長い休止期間を設け、二次電池の平均温度を低下させて劣化を防止し、ひいては二次電池の寿命を改善するようにしたものがある（例えば特許文献２参照）。
特開２００３−１３９８２７号公報（図２、図３） 特開２０００−２３６６３２号公報（図３） In addition, when performing intermittent charging, a charging current larger than the charging current in the initial charging period is supplied to supplementarily charge the secondary battery, and a pause period longer than the initial charging period is provided to increase the average temperature of the secondary battery. There is a battery that is lowered to prevent deterioration, and thus improves the life of the secondary battery (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 2003-139827 (FIGS. 2 and 3) JP 2000-236632 A (FIG. 3)

しかし、二次電池（バッテリ）の初期時における内部抵抗Ｒに相当する値Ｚ(int)と、最新の二次電池の内部抵抗Ｒに相当する値Ｚ(now)とを比較して二次電池の寿命を判定するものであるので、同じ条件下での比較とならない。例えば、初期時の周囲温度と最新時の周囲温度とが異なる場合には温度補正を行う必要がある。   However, the secondary battery is compared by comparing the value Z (int) corresponding to the internal resistance R at the initial stage of the secondary battery (battery) with the value Z (now) corresponding to the internal resistance R of the latest secondary battery. Since it is used to determine the lifespan, it is not a comparison under the same conditions. For example, when the initial ambient temperature is different from the latest ambient temperature, it is necessary to perform temperature correction.

また、自己放電時に計測を行うものであるので計測時間が長時間になる。すなわち、一般に間欠充電のサイクルは数時間サイクルで行われ、補充電区間よりも休止時間が長いので計測時間が長時間になる。   Moreover, since the measurement is performed during self-discharge, the measurement time becomes long. That is, in general, the intermittent charging cycle is performed in several hours, and the measurement time becomes longer because the pause time is longer than that of the auxiliary charging section.

一方、特許文献２のものでは、補充電期間であれば二次電池の充電状態に関係なく補充電がなされるので、本来であれば充電を必要としない容量が二次電池に残存している場合であっても充電されることになる。これは、電力の無駄であるとともに、充電の機会が多くなるので二次電池の寿命が短くなるおそれがある。   On the other hand, in the case of Patent Document 2, since the auxiliary charging is performed regardless of the charging state of the secondary battery during the auxiliary charging period, a capacity that does not require charging remains in the secondary battery. Even if it is a case, it will be charged. This is a waste of electric power and increases the chances of charging, which may shorten the life of the secondary battery.

本発明の目的は、バッテリの充電時においてバッテリの寿命を適正に判定でき、また省電力化や長寿命化を図れる充電回路、非常用点灯装置及び照明装置を提供することである。   An object of the present invention is to provide a charging circuit, an emergency lighting device, and an illuminating device that can appropriately determine the battery life when charging the battery, and that can achieve power saving and long life.

請求項１の発明に係わる充電回路は、商用電源からの交流電圧を直流電圧に変換する変換回路と；前記変換回路からバッテリへの給電を制御可能なスイッチと；前記スイッチをオンオフして前記バッテリの間欠充電を行う間欠充電手段と；前記間欠充電手段で間欠充電を行う際の補充電開始時のバッテリ電圧と補充電終了時のバッテリ電圧とを検出するバッテリ電圧検出手段と；前記バッテリ電圧検出手段で検出した補充電開始時のバッテリ電圧と補充電終了時のバッテリ電圧との差電圧を充電電流で除算した値が所定値以上となったときバッテリ寿命と判断する寿命判定手段と；を備えたことを特徴とする。   A charging circuit according to a first aspect of the present invention includes: a conversion circuit that converts an AC voltage from a commercial power source into a DC voltage; a switch that can control power supply from the conversion circuit to the battery; Intermittent charge means for performing intermittent charge of the battery; battery voltage detection means for detecting a battery voltage at the start of auxiliary charge and a battery voltage at the end of auxiliary charge when intermittent charge is performed by the intermittent charge means; and the battery voltage detection Life determination means for determining a battery life when a value obtained by dividing a difference voltage between a battery voltage at the start of auxiliary charging detected by the means and a battery voltage at the end of auxiliary charging by a charging current exceeds a predetermined value. It is characterized by that.

本発明及び以下の発明において、特に指定しない限り用語の定義及び技術的意味は次による。変換回路は、交流の商用電源の交流電圧を所定の直流電圧に変換するものであり、例えばスイッチング素子を具備した降圧チョッパ回路で構成され、スイッチング素子のオンデューティを変化させることによって出力電圧を可変する。スイッチは演算制御部によりオンオフ制御され変換回路からの直流をバッテリに供給するものであり、例えば電界効果トランジスタＦＥＴが使用される。また、バッテリはニッカド電池やニッケル水素電池等の種々の二次電池が使用可能である。   In the present invention and the following inventions, definitions and technical meanings of terms are as follows unless otherwise specified. The conversion circuit converts an AC voltage of an AC commercial power supply into a predetermined DC voltage. For example, the conversion circuit includes a step-down chopper circuit including a switching element, and the output voltage can be changed by changing the on-duty of the switching element. To do. The switch is on / off controlled by the arithmetic control unit and supplies direct current from the conversion circuit to the battery. For example, a field effect transistor FET is used. In addition, various secondary batteries such as a nickel cadmium battery and a nickel metal hydride battery can be used as the battery.

間欠充電手段はスイッチをオンオフしてバッテリの間欠充電を行うものであり、スイッチをオンオフ制御してバッテリの間欠充電を行う。間欠充電とは初期充電で満充電状態とし、その後に休止区間を設けて休止区間に自己放電により減少した容量を休止区間の経過後に補充電で補う充電方式である。   The intermittent charging means is for intermittently charging the battery by turning on and off the switch, and intermittently charging the battery by performing on / off control of the switch. Intermittent charging is a charging method in which a full charge state is established by initial charging, and then a pause period is provided, and the capacity reduced by self-discharge in the pause period is compensated by supplementary charging after the pause period.

バッテリ電圧検出手段は、間欠充電手段で間欠充電を行う際の補充電開始時のバッテリ電圧と補充電終了時のバッテリ電圧とを検出するものである。   The battery voltage detection means detects the battery voltage at the start of auxiliary charging and the battery voltage at the end of auxiliary charging when intermittent charging is performed by the intermittent charging means.

寿命判定手段は、間欠充電の際の補充電開始時のバッテリ電圧と補充電終了時のバッテリ電圧との差電圧を充電電流で除算した値、すなわち内部抵抗の相当値が所定値以上となったときバッテリ寿命と判断する。   The life determination means is a value obtained by dividing the difference voltage between the battery voltage at the start of auxiliary charging and the battery voltage at the end of auxiliary charging in intermittent charging by the charging current, that is, the equivalent value of the internal resistance is equal to or greater than a predetermined value. When the battery life is determined.

また、補充電開始時のバッテリ電圧には補充電直前のバッテリ電圧も含まれる。また、補充電終了時のバッテリ電圧には補充電直後のバッテリ電圧が含まれる。   Further, the battery voltage at the start of auxiliary charging includes the battery voltage immediately before auxiliary charging. Further, the battery voltage at the end of the auxiliary charging includes the battery voltage immediately after the auxiliary charging.

所定値は、バッテリの寿命を判定するための内部抵抗相当値であり、例えば照明装置の光源を２０分間連続して所定の基準の照度を満たして点灯できる内部抵抗相当値であり、バッテリの種類に応じて予め固定値として設定される。演算制御部によるバッテリ寿命の判定結果は、例えば表示器等の出力装置に点灯表示される。   The predetermined value is an internal resistance equivalent value for determining the life of the battery. For example, the predetermined value is an internal resistance equivalent value that can light up the light source of the lighting device continuously for 20 minutes to satisfy a predetermined reference illuminance. Is previously set as a fixed value. The determination result of the battery life by the arithmetic control unit is lit and displayed on an output device such as a display.

本発明によれば、補充電の区間は休止区間より短く、その補充電の際にバッテリの内部抵抗相当値を演算するので、周囲温度変化の影響をほとんど受けない状態で内部抵抗相当値を演算できる。従って、演算した内部抵抗相当値を温度補正する必要がなく簡便にしかも精度よく内部抵抗相当値を求めることができる。また、寿命末期の判定は、初期の内部抵抗相当値ではなく予め定めた所定値と比較して判定するので、内部抵抗相当値の演算の際に、初期の内部抵抗相当値の計測条件と同じ条件での内部抵抗相当値に補正する必要もない。   According to the present invention, the auxiliary charging interval is shorter than the pause interval, and the internal resistance equivalent value of the battery is calculated during the auxiliary charging. Therefore, the internal resistance equivalent value is calculated in a state that is hardly affected by the ambient temperature change. it can. Therefore, it is not necessary to correct the temperature of the calculated internal resistance equivalent value, and the internal resistance equivalent value can be obtained easily and accurately. In addition, since the determination at the end of the life is made by comparing with a predetermined value that is not a value corresponding to the initial internal resistance, the same measurement condition as the initial value corresponding to the internal resistance is used when calculating the internal resistance equivalent value. There is no need to correct the internal resistance equivalent value under the conditions.

請求項２の発明に係わる充電回路は、商用電源からの交流電圧を直流電圧に変換する変換回路と；前記変換回路からバッテリへの給電を制御可能なスイッチと；前記スイッチをオンオフして前記バッテリの間欠充電を行う間欠充電手段と；前記間欠充電手段で間欠充電を行う際の補充電開始時のバッテリ電圧を検出するバッテリ電圧検出手段と；前記バッテリ電圧検出手段で検出した補充開始時のバッテリ電圧が所定値を越えている場合には前記間欠充電手段での間欠充電の少なくとも１サイクルの補充電を省略させる電圧比較手段と；を備えたことを特徴とする。   A charging circuit according to a second aspect of the present invention includes: a conversion circuit that converts an AC voltage from a commercial power source into a DC voltage; a switch that can control power supply from the conversion circuit to the battery; Intermittent charging means for performing intermittent charging; battery voltage detecting means for detecting battery voltage at the start of supplementary charging when intermittent charging is performed by the intermittent charging means; and battery at the start of replenishment detected by the battery voltage detecting means Voltage comparison means for omitting at least one cycle of supplementary charging of intermittent charging by the intermittent charging means when the voltage exceeds a predetermined value.

本発明は、補充開始時のバッテリ電圧が所定値を越えている場合には、少なくとも１サイクルの補充電を省略するようにしたものである。   In the present invention, when the battery voltage at the start of replenishment exceeds a predetermined value, at least one cycle of supplementary charging is omitted.

一般に、バッテリが新しいときは内部抵抗値が小さく自己放電量も少ないので、補充電をする必要がないので、バッテリがこのような状態であるときは、不必要な補充電を省略する。   Generally, when the battery is new, the internal resistance value is small and the amount of self-discharge is small, so there is no need for supplementary charging. Therefore, when the battery is in such a state, unnecessary supplementary charging is omitted.

本発明によれば、補充電をする必要がないときは補充電を省略するので省電力化を図ることができる。また、バッテリが満充電状態のときの補充電を省略できるのでバッテリの長寿命化が図れる。   According to the present invention, when it is not necessary to perform supplementary charging, supplementary charging is omitted, so that power saving can be achieved. In addition, since the auxiliary charging when the battery is fully charged can be omitted, the battery life can be extended.

請求項３の発明に係わる充電回路は、請求項１または２の発明において、前記間欠充電手段は、前記バッテリの満充電後の補充電のオン時間を３秒以内としオフ時間を３０秒〜３分以内としたことを特徴とする。   According to a third aspect of the present invention, there is provided the charging circuit according to the first or second aspect, wherein the intermittent charging means sets the on-time of the auxiliary charge after full charging of the battery within 3 seconds and the off-time of 30 seconds to 3 seconds. It is characterized by being within minutes.

請求項４の発明に係わる充電回路は、請求項１または２の発明において、前記間欠充電手段は、前記バッテリの満充電後の補充電のオン時間を３０秒以内としオフ時間を３０秒〜３分以内としたことを特徴とする。   According to a fourth aspect of the present invention, there is provided the charging circuit according to the first or second aspect, wherein the intermittent charging means sets the on-time of the auxiliary charge after full charging of the battery within 30 seconds and the off-time of 30 seconds to 3 seconds. It is characterized by being within minutes.

請求項３または４発明は、従来は充電区間及び休止区間が数時間単位であったものを補充電の際のオンオフ時間（補充電区間、休止区間）を短くして、休止区間中の自己放電による自己放電量を小さく抑えるようにしたものであり、補充電のオン時間を３秒以内または３０秒以内としオフ時間を３０秒〜３分以内とする。   According to the third or fourth aspect of the present invention, the self-discharge in the pause period is shortened by shortening the on / off time (auxiliary charge period, pause period) at the time of supplementary charge in the conventional case where the charge period and pause period are in units of several hours. The amount of self-discharge due to is suppressed to a small value, and the on-time of auxiliary charge is within 3 seconds or within 30 seconds, and the off-time is within 30 seconds to 3 minutes.

本発明によれば、休止区間が短くなるので自己放電による自己放電量を小さく抑えることができる。オフ時間を３０秒〜３分以内の場合には自己放電量を抑えることができるので、休止期間中に停電が発生した場合であってもバッテリをほぼ満充電に近い状態に保持できる。   According to the present invention, since the pause period is shortened, the amount of self-discharge due to self-discharge can be kept small. When the off time is within 30 seconds to 3 minutes, the self-discharge amount can be suppressed, so that the battery can be kept almost fully charged even if a power failure occurs during the suspension period.

請求項５の発明に係わる非常用点灯装置は、請求項１ないし４のいずれか一の充電回路と；前記充電回路により間欠充電されるバッテリと；停電時に前記バッテリより供給される電源により光源を点灯させる点灯装置と；を備えたことを特徴とする。   An emergency lighting device according to a fifth aspect of the invention includes a charging circuit according to any one of the first to fourth aspects; a battery that is intermittently charged by the charging circuit; and a light source that is supplied from the battery during a power failure. And a lighting device for lighting.

本発明は、例えば非常灯や誘導灯等を点灯する非常用点灯装置であり、光源は、例えば白熱ランプや蛍光ランプ、発光ダイオード等である。本発明によれば、請求項１ないし請求項４のいずれか一の効果を有する非常用点灯装置が得られる。   The present invention is an emergency lighting device that lights, for example, an emergency light or a guide light, and the light source is, for example, an incandescent lamp, a fluorescent lamp, a light emitting diode, or the like. According to the present invention, an emergency lighting device having the effect of any one of claims 1 to 4 can be obtained.

請求項６の発明に係わる照明装置は、器具本体と；器具本体に設けられる光源と；請求項５記載の非常用点灯装置と；を具備することを特徴とする。本発明によれば、請求項５の効果を有する照明装置が得られる。   A lighting device according to a sixth aspect of the present invention comprises: an instrument main body; a light source provided in the instrument main body; and an emergency lighting device according to the fifth aspect. According to the present invention, an illumination device having the effect of claim 5 can be obtained.

請求項１の発明によれば、周囲温度変化の影響をほとんど受けない状態で内部抵抗相当値を演算できるので、演算した内部抵抗相当値を温度補正する必要がなく簡便にしかも精度よく内部抵抗相当値を求めることができる。また、寿命末期の判定は、初期の内部抵抗相当値ではなく予め定めた所定値と比較して判定するので、演算した内部抵抗相当値に補正する必要もない。   According to the first aspect of the present invention, since the internal resistance equivalent value can be calculated in a state where it is hardly affected by the ambient temperature change, the calculated internal resistance equivalent value does not need to be temperature-corrected, and can be easily and accurately equivalent to the internal resistance. The value can be determined. In addition, since the end of life is determined by comparing with a predetermined value that is not an initial value corresponding to the internal resistance, it is not necessary to correct the calculated value corresponding to the internal resistance.

請求項２の発明によれば、補充電をする必要がないときは補充電を省略するので省電力化を図ることができ、バッテリの長寿命化が図れる。請求項３または４の発明によれば、補充電の休止区間が短くなるので自己放電による自己放電量を小さく抑えることができ、休止期間中に停電が発生した場合であってもバッテリをほぼ満充電状態に保持できる。請求項５の発明によれば、請求項１ないし請求項４のいずれか一の効果を有する非常用点灯装置が得られる。請求項６の発明によれば、請求項５の効果を有する照明装置が得られる。   According to the second aspect of the present invention, when it is not necessary to perform supplementary charging, the supplementary charging is omitted, so that power saving can be achieved and the life of the battery can be extended. According to the invention of claim 3 or 4, since the pause period for supplementary charging is shortened, the amount of self-discharge due to self-discharge can be kept small, and even if a power failure occurs during the pause period, the battery is almost fully charged. Can be charged. According to the invention of claim 5, the emergency lighting device having the effect of any one of claims 1 to 4 can be obtained. According to the invention of claim 6, a lighting device having the effect of claim 5 can be obtained.

図１は本発明の実施の形態に係わる照明装置のブロック構成図である。充電回路１１は商用電源１２からの交流を直流に変換してバッテリ１３に充電を行うものであり、間欠充電にてバッテリ１３を常時充電する。バッテリ１３には点灯装置３１を介して光源１４が接続されており、光源１４の電源が停電したときにバッテリ１３より光源１４に電源を供給して光源１４を点灯する。光源１４は、例えば白熱ランプや蛍光ランプ、発光ダイオード等であり、照明装置は、例えば非常灯や誘導灯等の照明装置である。また、バッテリ１３は例えばニッケル水素電池である。   FIG. 1 is a block diagram of a lighting device according to an embodiment of the present invention. The charging circuit 11 converts alternating current from the commercial power supply 12 into direct current and charges the battery 13, and always charges the battery 13 by intermittent charging. A light source 14 is connected to the battery 13 via a lighting device 31, and when the power source of the light source 14 is interrupted, power is supplied from the battery 13 to the light source 14 to light the light source 14. The light source 14 is, for example, an incandescent lamp, a fluorescent lamp, a light emitting diode, or the like, and the lighting device is a lighting device such as an emergency light or a guide light. The battery 13 is, for example, a nickel metal hydride battery.

商用電源１２の交流電圧は充電回路１１の変換回路１５に入力され所定の直流電圧に変換される。変換回路１５は、例えばスイッチング素子を具備した降圧チョッパ回路で構成され、演算制御部１６からの制御指令によりスイッチング素子のオンデューティを変化させることによって出力電圧を可変する。   The AC voltage of the commercial power supply 12 is input to the conversion circuit 15 of the charging circuit 11 and converted into a predetermined DC voltage. The conversion circuit 15 is configured by, for example, a step-down chopper circuit having a switching element, and varies the output voltage by changing the on-duty of the switching element in accordance with a control command from the arithmetic control unit 16.

スイッチ１７は、演算制御部１６によりスイッチ駆動回路１８を介してオンオフ制御され、変換回路１５からの直流を充電抵抗１９を介して間欠的にバッテリ１３に供給してバッテリ１３を間欠充電するものであり、例えば電界効果トランジスタＦＥＴが使用される。   The switch 17 is ON / OFF controlled by the arithmetic control unit 16 via the switch drive circuit 18, and intermittently charges the battery 13 by supplying the direct current from the conversion circuit 15 to the battery 13 intermittently via the charging resistor 19. For example, a field effect transistor FET is used.

演算制御部１６は、例えばマイクロコンピュータで構成され、スイッチ１７をオンオフ制御してバッテリ１３の間欠充電を行う。その際には、変換回路１５に制御指令を出力して変換回路１５の出力電圧を調整する。また、変換回路１５からの充電電流は電流検出器２０で検出されて演算制御部１６に入力され、同様にバッテリ１３のバッテリ電圧は電圧検出器２１で検出されて演算制御部１６に入力される。   The arithmetic control unit 16 is composed of, for example, a microcomputer, and performs on-off control of the switch 17 to intermittently charge the battery 13. At that time, a control command is output to the conversion circuit 15 to adjust the output voltage of the conversion circuit 15. The charging current from the conversion circuit 15 is detected by the current detector 20 and input to the arithmetic control unit 16. Similarly, the battery voltage of the battery 13 is detected by the voltage detector 21 and input to the arithmetic control unit 16. .

演算制御部１６は、電流検出器２０で検出された充電電流Ｉ、バッテリ電圧検出手段である電圧検出器２１で検出された補充電開始時のバッテリ電圧、その補充電終了時のバッテリ電圧に基づいてバッテリ１３の内部抵抗相当値を求め、その値が所定値以上となったときにバッテリ寿命と判断する。そして、演算制御部１６によるバッテリ寿命の判定結果は、出力装置２２に出力される。出力装置２２は、例えば表示器等でありバッテリ寿命であると判定されたときに点灯表示される。   The arithmetic control unit 16 is based on the charging current I detected by the current detector 20, the battery voltage at the start of auxiliary charging detected by the voltage detector 21 as battery voltage detecting means, and the battery voltage at the end of the auxiliary charging. Then, an internal resistance equivalent value of the battery 13 is obtained, and when the value is equal to or greater than a predetermined value, it is determined that the battery life is reached. Then, the determination result of the battery life by the arithmetic control unit 16 is output to the output device 22. The output device 22 is a display or the like, for example, and is turned on when it is determined that the battery life is reached.

図２は演算制御部１６の一例を示すブロック構成図である。演算制御部１６はバッテリ１３を間欠充電するための充電パターンを予め充電パターン記憶部２３に記憶しており、オンオフ制御手段２４は、この充電パターン記憶部２３に記憶された充電パターンに基づいてスイッチ駆動回路１８にオンオフ制御指令を出力してスイッチをオンオフ制御しバッテリ１３を間欠充電する。すなわち、オンオフ制御手段２４はスイッチ１７をオンオフしてバッテリ１３の間欠充電を行う間欠充電手段として動作する。充電パターン記憶部２３はタイマー機能で構成してもよい。   FIG. 2 is a block diagram showing an example of the arithmetic control unit 16. The arithmetic control unit 16 stores a charge pattern for intermittently charging the battery 13 in the charge pattern storage unit 23 in advance, and the on / off control unit 24 switches based on the charge pattern stored in the charge pattern storage unit 23. An on / off control command is output to the drive circuit 18 to control on / off of the switch to intermittently charge the battery 13. That is, the on / off control unit 24 operates as an intermittent charging unit that performs on / off switching of the switch 17 to intermittently charge the battery 13. The charge pattern storage unit 23 may be configured with a timer function.

図３は充電パターンの一例の説明図である。新しいバッテリ１３に対して最初に初充電区間Ｔ０にて満充電状態とし、その後に充電の休止区間Ｔ１を設け、その休止区間Ｔ１の経過後に補充電区間Ｔ２にて満充電状態とする。すなわち、休止区間Ｔ１の間に自己放電により減少した容量を補充電区間Ｔ２で補い、この動作を繰り返して、常時、ほぼ満充電状態を保つように補充電を行う。   FIG. 3 is an explanatory diagram of an example of a charging pattern. The new battery 13 is first fully charged in the initial charging period T0, and then a charging pause period T1 is provided. After the pause period T1, the auxiliary charging period T2 is fully charged. That is, the capacity reduced by the self-discharge during the pause period T1 is compensated by the supplementary charging period T2, and this operation is repeated to perform supplementary charging so as to maintain a substantially fully charged state at all times.

ここで、本発明の実施の形態では、補充電の休止区間Ｔ１及び補充電区間Ｔ２を短くして、休止区間中の自己放電による自己放電量を小さく抑えるようにしている。例えば、補充電区間Ｔ２（スイッチのオン時間）を３秒以内または３０秒以内とし、休止区間Ｔ１（スイッチのオフ時間）を３０秒〜３分以内としている。これにより、休止区間Ｔ１が短くなるので自己放電による自己放電量を小さく抑えることができる。また、補充電区間Ｔ２も短くでき満充電状態で過充電することが少なくなりバッテリ１３の長寿命化を図れる。また、オフ時間を３０秒〜３分以内とした場合には自己放電量を抑えることができるので、休止期間中に停電が発生した場合であってもバッテリ１３はほぼ満充電に近い状態であり、光源１４への電源供給も適正に行える。   Here, in the embodiment of the present invention, the pause period T1 and the supplementary charge period T2 of the auxiliary charge are shortened so that the amount of self-discharge due to self-discharge during the pause period is kept small. For example, the supplementary charging section T2 (switch on time) is within 3 seconds or within 30 seconds, and the pause section T1 (switch off time) is within 30 seconds to 3 minutes. As a result, the pause interval T1 is shortened, so that the amount of self-discharge due to self-discharge can be kept small. In addition, the auxiliary charging section T2 can be shortened, and overcharging in a fully charged state is reduced, and the life of the battery 13 can be extended. In addition, when the off time is within 30 seconds to 3 minutes, the amount of self-discharge can be suppressed, so that the battery 13 is almost fully charged even if a power failure occurs during the suspension period. The power supply to the light source 14 can also be appropriately performed.

次に、演算制御部１６の内部抵抗演算手段２５は、オンオフ制御手段２４から各々の補充電区間Ｔ２の補充電開始時点及び補充電終了時点を入力し、バッテリ１３の間欠充電中は補充電ごとに、電圧検出器２１からバッテリ１３の補充電開始時のバッテリ電圧Ｖ１及びその補充電終了時のバッテリ電圧Ｖ２とを入力し、また、電流検出器２０から充電電流Ｉを入力する。   Next, the internal resistance calculation unit 25 of the calculation control unit 16 inputs the auxiliary charging start time and the auxiliary charging end time of each auxiliary charging section T2 from the on / off control unit 24, and every time the auxiliary charging is performed during the intermittent charging of the battery 13. The battery voltage V1 at the time of the start of the auxiliary charging of the battery 13 and the battery voltage V2 at the end of the auxiliary charging are input from the voltage detector 21, and the charging current I is input from the current detector 20.

図４は内部抵抗演算手段２５の演算内容の説明図である。内部抵抗演算手段２５では、補充電開始時のバッテリ電圧Ｖ１とその補充電終了時のバッテリ電圧Ｖ２との差電圧ΔＶ（Ｖ１−Ｖ２）を求め、差電圧ΔＶ（Ｖ１−Ｖ２）を充電電流Ｉで除算した値、すなわち内部抵抗相当値ΔＲを求める。内部抵抗演算手段２５で求められた内部抵抗相当値ΔＲは演算結果記憶部２６に時系列的に保存される。   FIG. 4 is an explanatory diagram of the calculation contents of the internal resistance calculation means 25. The internal resistance calculation means 25 obtains a difference voltage ΔV (V1−V2) between the battery voltage V1 at the start of auxiliary charging and the battery voltage V2 at the end of the auxiliary charging, and uses the difference voltage ΔV (V1−V2) as the charging current I. The value divided by, that is, the internal resistance equivalent value ΔR is obtained. The internal resistance equivalent value ΔR obtained by the internal resistance calculation means 25 is stored in the calculation result storage unit 26 in time series.

寿命判定手段２７は、演算結果記憶部２６に記憶された内部抵抗相当値ΔＲと所定値記憶部２８に予め記憶された所定値とを比較し、その比較結果を演算結果記憶部２６に記憶すると共に、内部抵抗相当値ΔＲが所定値以上となったときはバッテリ寿命と判断し、出力装置２２にその旨を出力する。ここで、所定値記憶部２８に予め記憶される所定値は、バッテリ１３の寿命を判定するための内部抵抗相当値ΔＲ０であり、例えば照明装置の光源１４を２０分間連続して所定の基準の照度を満たして点灯できる内部抵抗相当値、あるいはバッテリ１３の寿命であると想定される内部抵抗相当値である。この内部抵抗相当値ΔＲ０はバッテリ１３の種類に応じて予め固定値として設定される。   The life determination means 27 compares the internal resistance equivalent value ΔR stored in the calculation result storage unit 26 with a predetermined value stored in advance in the predetermined value storage unit 28, and stores the comparison result in the calculation result storage unit 26. At the same time, when the internal resistance equivalent value ΔR becomes equal to or greater than a predetermined value, it is determined that the battery life is reached, and the fact is output to the output device 22. Here, the predetermined value stored in advance in the predetermined value storage unit 28 is an internal resistance equivalent value ΔR0 for determining the life of the battery 13, and for example, the light source 14 of the lighting device is continuously used for a predetermined reference for 20 minutes. It is an internal resistance equivalent value that can be lit with illuminance, or an internal resistance equivalent value that is assumed to be the life of the battery 13. This internal resistance equivalent value ΔR0 is set in advance as a fixed value according to the type of the battery 13.

このように、間欠充電中の補充電中の内部抵抗相当値ΔＲを監視し続け、内部抵抗相当値ΔＲがある一定以上となったとき寿命と判断する。内部抵抗相当値ΔＲの演算に必要とする補充電開始時のバッテリ電圧Ｖ１とその補充電終了時のバッテリ電圧Ｖ２とを得る時間差は補充電区間Ｔ２であり短時間であるので、周囲温度変化の影響をほとんど受けない状態で内部抵抗相当値ΔＲを演算できる。従って、演算した内部抵抗相当値ΔＲを温度補正する必要がなく簡便にしかも精度よく内部抵抗相当値ΔＲを求めることができる。また、寿命末期の判定は、初期の内部抵抗相当値ではなく予め定めた所定値と比較して判定するので、内部抵抗相当値の演算の際に、初期の内部抵抗相当値の計測条件と同じ条件での内部抵抗相当値に補正する必要もない。   In this way, the internal resistance equivalent value ΔR during the auxiliary charge during intermittent charging is continuously monitored, and when the internal resistance equivalent value ΔR becomes a certain value or more, it is determined that the lifetime is reached. Since the time difference for obtaining the battery voltage V1 at the start of auxiliary charging and the battery voltage V2 at the end of the auxiliary charging necessary for the calculation of the internal resistance equivalent value ΔR is the auxiliary charging section T2 and is a short time, The internal resistance equivalent value ΔR can be calculated with almost no influence. Therefore, it is not necessary to correct the temperature of the calculated internal resistance equivalent value ΔR, and the internal resistance equivalent value ΔR can be obtained easily and accurately. In addition, since the determination at the end of the life is made by comparing with a predetermined value that is not a value corresponding to the initial internal resistance, the same measurement condition as the initial value corresponding to the internal resistance is used when calculating the internal resistance equivalent value. There is no need to correct the internal resistance equivalent value under the conditions.

なお、充電電流Ｉの変動が少ない場合には、充電電流Ｉをあらかじめ設定値として記憶させて適宜用いることができ、この場合は、電流検出器２０は用いなくてもよい。   When the fluctuation of the charging current I is small, the charging current I can be stored in advance as a set value and used as appropriate. In this case, the current detector 20 may not be used.

図５は充電パターンの他の一例の説明図である。バッテリ１３が新しいうちは、図５（ａ）に示すように休止区間Ｔ１を長くして補充電の回数を少なくし、バッテリ１３の使用期間に応じて、図５（ｂ）、図５（ｃ）に示すように、徐々に休止区間Ｔ１を短くして補充電の回数を多くするようにしたものである。   FIG. 5 is an explanatory diagram of another example of the charging pattern. While the battery 13 is new, as shown in FIG. 5 (a), the pause interval T1 is lengthened to reduce the number of times of supplementary charging. Depending on the usage period of the battery 13, FIGS. 5 (b) and 5 (c) ), The pause interval T1 is gradually shortened to increase the number of supplementary charges.

バッテリ１３が新しいうちは、補充電の回数を減らしても満充電状態を保持できる。また、満充電状態で過充電をするとバッテリ１３の劣化が早まり寿命が短くなる。そこで、バッテリ１３が新しいうちは、休止区間Ｔ１を長くして補充電の回数を少なくし、バッテリ１３の使用期間が長くなるにつれて徐々に休止区間Ｔ１を短くして補充電の回数を多くする。例えば、バッテリ１３の平均的な寿命が４〜５年である場合には、最初の１．５年間は図５（ａ）の充電パターンで補充電を行い、次の１．５年間は図５（ｂ）の充電パターンで補充電を行い、その後は図５（ｃ）の充電パターンで充電を行う。この充電パターンはタイマー機能で構成してもよい。   While the battery 13 is new, the fully charged state can be maintained even if the number of times of auxiliary charging is reduced. In addition, when the battery is overcharged in the fully charged state, the battery 13 is deteriorated earlier and the life is shortened. Therefore, while the battery 13 is new, the suspension section T1 is lengthened to reduce the number of supplementary charging, and the suspension section T1 is gradually shortened to increase the number of supplementary charging as the use period of the battery 13 increases. For example, when the average life of the battery 13 is 4 to 5 years, supplementary charging is performed with the charging pattern of FIG. 5A for the first 1.5 years, and FIG. 5 is used for the next 1.5 years. Complementary charging is performed with the charging pattern of (b), and thereafter charging is performed with the charging pattern of FIG. This charging pattern may be configured with a timer function.

図６は演算制御部１６の他の一例を示すブロック構成図である。図２に示した演算制御部１６に対して、電圧検出器２１で検出されたバッテリ電圧Ｖと電圧設定器２９に設定された所定値Ｖ０とを比較する電圧比較手段３０を追加して設け、バッテリ電圧Ｖが所定値Ｖ０を越えた場合には、間欠充電手段であるオンオフ制御手段２４での間欠充電の少なくとも１サイクルの補充電を省略するようにしたものである。図３と同一要素には同一符号を付し重複する説明は省略する。   FIG. 6 is a block diagram showing another example of the arithmetic control unit 16. In addition to the arithmetic control unit 16 shown in FIG. 2, a voltage comparison means 30 for comparing the battery voltage V detected by the voltage detector 21 with the predetermined value V0 set in the voltage setter 29 is additionally provided. When the battery voltage V exceeds a predetermined value V0, at least one cycle of supplementary charging of intermittent charging by the on / off control means 24, which is intermittent charging means, is omitted. The same elements as those in FIG. 3 are denoted by the same reference numerals, and redundant description is omitted.

電圧比較手段３０は、補充電開始時の電圧検出器２１で検出されたバッテリ電圧Ｖを入力し電圧設定器２９に設定された所定値Ｖ０と比較する。そして、補充電開始時のバッテリ電圧Ｖが所定値Ｖ０を越えている場合には、次のサイクルでの補充電を省略する。これにより、満充電状態で過充電をすることが少なくなりバッテリ１３の長寿命化が図れると共に省エネルギーを図れる。   The voltage comparison means 30 inputs the battery voltage V detected by the voltage detector 21 at the start of auxiliary charging, and compares it with a predetermined value V0 set in the voltage setter 29. When the battery voltage V at the start of auxiliary charging exceeds the predetermined value V0, auxiliary charging in the next cycle is omitted. As a result, overcharging in a fully charged state is reduced, the life of the battery 13 can be extended, and energy can be saved.

図７は、演算制御部１６で補充電開始時のバッテリ電圧Ｖに応じて行う間欠充電の処理内容を示すフローチャートである。まず、充電パターンに基づいて補充電開始時点になったか否かを判定し（Ｓ１）、補充電開始時点になると電圧検出器２１からのバッテリ電圧を入力し（Ｓ２）、その入力したバッテリ電圧を補充電開始時のバッテリ電圧とする（Ｓ３）。そして、電圧比較手段３０により、補充電開始時のバッテリ電圧Ｖが電圧設定器２９に設定された所定値Ｖ０を越えているか否かを判定し（Ｓ４）、補充電開始時のバッテリ電圧Ｖが所定値Ｖ０を越えている場合には、間欠充電の１サイクル時間（Ｔ１＋Ｔ２）＋ΔＴだけ遅延する（Ｓ５）。ここで、ΔＴは間欠充電の１サイクルを確実に省略させるための余裕時間である。その後に、間欠充電の動作が終了でないことを確認しステップＳ１に戻る（Ｓ６）。これにより、次の１サイクルでの補充電を省略する。   FIG. 7 is a flowchart showing the processing contents of intermittent charging performed by the arithmetic control unit 16 in accordance with the battery voltage V at the start of auxiliary charging. First, it is determined whether or not the auxiliary charging start time is reached based on the charging pattern (S1). When the auxiliary charging start time is reached, the battery voltage from the voltage detector 21 is input (S2), and the input battery voltage is calculated. The battery voltage at the start of auxiliary charging is used (S3). Then, the voltage comparison means 30 determines whether or not the battery voltage V at the start of auxiliary charging exceeds a predetermined value V0 set in the voltage setting device 29 (S4), and the battery voltage V at the start of auxiliary charging is determined. If it exceeds the predetermined value V0, it is delayed by one cycle time (T1 + T2) + ΔT of intermittent charging (S5). Here, ΔT is a margin time for reliably omitting one cycle of intermittent charging. Thereafter, it is confirmed that the intermittent charging operation is not completed, and the process returns to step S1 (S6). Thereby, the supplementary charge in the following 1 cycle is abbreviate | omitted.

一方、ステップＳ４の処理で、補充電開始時のバッテリ電圧Ｖが電圧設定器２９に設定された所定値Ｖ０を越えていない場合は、オンオフ制御手段２４により補充電が開始される（Ｓ７）。そして、そのサイクルでの補充電が終了したか否かを判定し（Ｓ８）、そのサイクルでの補充電が終了したときは、電圧検出器２１からのバッテリ電圧を入力し（Ｓ９）、その入力したバッテリ電圧を補充電終了時のバッテリ電圧とする（Ｓ１０）。その後に、間欠充電の動作が終了でないことを確認しステップＳ１に戻る（Ｓ１１）。   On the other hand, if the battery voltage V at the start of the auxiliary charging does not exceed the predetermined value V0 set in the voltage setting unit 29 in the process of step S4, the on / off control means 24 starts the auxiliary charging (S7). Then, it is determined whether or not the auxiliary charging in the cycle is completed (S8). When the auxiliary charging in the cycle is completed, the battery voltage from the voltage detector 21 is input (S9). The obtained battery voltage is set as the battery voltage at the end of the auxiliary charge (S10). Thereafter, it is confirmed that the intermittent charging operation is not finished, and the process returns to step S1 (S11).

ステップＳ３で得られた補充電開始時のバッテリ電圧、及びステップＳ１０で得られた補充電終了時のバッテリ電圧は、内部抵抗演算手段２５に入力され内部抵抗相当値ΔＲが演算されることになる。このように、補充電開始時のバッテリ電圧Ｖが所定値Ｖ０を越えている場合には、１サイクルの補充電を省略する。   The battery voltage at the start of supplementary charging obtained in step S3 and the battery voltage at the end of supplementary charging obtained in step S10 are input to the internal resistance computing means 25 and the internal resistance equivalent value ΔR is computed. . Thus, when the battery voltage V at the start of auxiliary charging exceeds the predetermined value V0, one cycle of auxiliary charging is omitted.

以上の説明では、バッテリ電圧Ｖが所定値Ｖ０を越えた場合には、次の１サイクルでの補充電を省略するようにしたが、２サイクルの補充電を省略するようにしても良い。例えば、バッテリ電圧Ｖが所定値Ｖ０を越えた場合にバッテリ１３の使用時間を考慮に入れて、バッテリ１３が新しいうちは図５（ａ）に示すように２サイクルの補充電を省略するようにし、所定期間経過後は図５（ｂ）に示すように１サイクルの補充電を省略するようにしても良い。なお、バッテリ１３の使用時間は例えばタイマー機能により管理する。   In the above description, when the battery voltage V exceeds the predetermined value V0, the supplementary charge in the next one cycle is omitted, but the supplementary charge in two cycles may be omitted. For example, when the battery voltage V exceeds a predetermined value V0, the usage time of the battery 13 is taken into consideration, and while the battery 13 is new, the two-cycle auxiliary charging is omitted as shown in FIG. After the predetermined period, one cycle of supplementary charging may be omitted as shown in FIG. The usage time of the battery 13 is managed by a timer function, for example.

図８は、その場合の演算制御部１６での処理内容を示すフローチャートである。図８では、図７のステップに対し、ステップＳ１２及びステップＳ１３が追加されている。図７と同一ステップには同一符号を付し重複する説明は省略する。   FIG. 8 is a flowchart showing the processing contents in the arithmetic control unit 16 in that case. In FIG. 8, steps S12 and S13 are added to the steps of FIG. The same steps as those in FIG. 7 are denoted by the same reference numerals, and redundant description is omitted.

すなわち、ステップＳ４の判定で、補充電開始時のバッテリ電圧Ｖが所定値Ｖ０を越えている場合には、バッテリの使用可能時間は所定期間以上か否かを判定し（Ｓ１２）、所定期間以上である場合には、間欠充電の２サイクル時間２（Ｔ１＋Ｔ２）＋ΔＴだけ遅延する（Ｓ１３）。ここで、ΔＴは間欠充電の２サイクルを確実に省略させるための余裕時間である。その後に、間欠充電の動作が終了でないことを確認しステップＳ１に戻る（Ｓ６）。これにより、次の１サイクルでの補充電を省略する。   That is, when the battery voltage V at the start of auxiliary charging exceeds the predetermined value V0 in the determination in step S4, it is determined whether or not the battery usable time is longer than a predetermined period (S12). If it is, the cycle time of intermittent charging is delayed by 2 (T1 + T2) + ΔT (S13). Here, ΔT is a margin time for reliably omitting two cycles of intermittent charging. Thereafter, it is confirmed that the intermittent charging operation is not completed, and the process returns to step S1 (S6). Thereby, the supplementary charge in the following 1 cycle is abbreviate | omitted.

このように、補充電開始時のバッテリ電圧Ｖが所定値Ｖ０を越えている場合には、バッテリ１３の使用時間を考慮に入れて、バッテリ１３が新しいうちは図５（ａ）に示すように２サイクルの補充電を省略するようにし、所定期間経過後は図５（ｂ）に示すように１サイクルの補充電を省略する。従って、補充電をする必要がないときは補充電を省略することになるので、省電力化を図ることができる。また、バッテリが満充電状態のときの補充電を省略できるのでバッテリの長寿命化が図れる。   As described above, when the battery voltage V at the start of the auxiliary charging exceeds the predetermined value V0, the usage time of the battery 13 is taken into consideration, and while the battery 13 is new, as shown in FIG. Two cycles of supplementary charging are omitted, and after a predetermined period, one cycle of supplementary charging is omitted as shown in FIG. Therefore, when it is not necessary to perform supplementary charging, supplementary charging is omitted, so that power saving can be achieved. In addition, since the auxiliary charging when the battery is fully charged can be omitted, the battery life can be extended.

本発明の実施の形態によれば、周囲温度変化の影響をほとんど受けない状態で内部抵抗相当値を演算できるので、演算した内部抵抗相当値を温度補正する必要がなく簡便にしかも精度よく内部抵抗相当値を求めることができる。また、寿命末期の判定は、初期の内部抵抗相当値ではなく予め定めた所定値と比較して判定するので、演算した内部抵抗相当値に補正する必要もない。従って、バッテリ１３を放電させなくてもバッテリ寿命を適正に判断でき、バッテリ１３の寿命末期判定を容易に行い使用者に報知できる。   According to the embodiment of the present invention, the internal resistance equivalent value can be calculated in a state where it is hardly affected by the ambient temperature change, so that it is not necessary to correct the temperature of the calculated internal resistance equivalent value, and the internal resistance equivalent can be calculated easily and accurately. The equivalent value can be obtained. In addition, since the end of life is determined by comparing with a predetermined value that is not an initial value corresponding to the internal resistance, it is not necessary to correct the calculated value corresponding to the internal resistance. Therefore, the battery life can be properly determined without discharging the battery 13, and the end-of-life determination of the battery 13 can be easily performed to notify the user.

また、補充電区間及び補充電の休止区間を短くしたので、補充電の休止区間において自己放電による自己放電量を小さく抑えることができ、休止期間中に停電が発生した場合であってもバッテリをほぼ満充電状態に保持できる。さらに、補充電をする必要がないときは補充電を省略するので省エネルギーを図ることができ、バッテリの長寿命化が図れる。   In addition, since the supplementary charging section and the supplementary charging suspension section are shortened, the amount of self-discharge due to self-discharge can be kept small in the supplementary charging suspension section, and the battery can be removed even if a power failure occurs during the suspension period. It can be kept almost fully charged. Further, when it is not necessary to perform auxiliary charging, the auxiliary charging is omitted, so that energy saving can be achieved, and the life of the battery can be extended.

本発明の実施の形態に係わる照明装置のブロック構成図。The block block diagram of the illuminating device concerning embodiment of this invention. 本発明の実施の形態における充電回路の演算制御部の一例を示すブロック構成図。The block block diagram which shows an example of the calculation control part of the charging circuit in embodiment of this invention. 本発明の実施の形態における充電パターンの一例の説明図。Explanatory drawing of an example of the charge pattern in embodiment of this invention. 本発明の実施の形態における充電回路の内部抵抗演算手段の演算内容の説明図。Explanatory drawing of the calculation content of the internal resistance calculating means of the charging circuit in embodiment of this invention. 本発明の実施の形態における充電パターンの他の一例の説明図。Explanatory drawing of the other example of the charge pattern in embodiment of this invention. 本発明の実施の形態における充電回路の演算制御部の他の一例を示すブロック構成図。The block block diagram which shows another example of the calculation control part of the charging circuit in embodiment of this invention. 本発明の実施の形態における演算制御部が補充電開始時のバッテリ電圧に応じて行う間欠充電の処理内容を示すフローチャート。The flowchart which shows the processing content of the intermittent charge which the calculation control part in embodiment of this invention performs according to the battery voltage at the time of a supplementary charge start. 本発明の実施の形態における演算制御部が補充電開始時のバッテリ電圧に応じて行う間欠充電の他の一例の処理内容を示すフローチャート。The flowchart which shows the processing content of another example of the intermittent charge which the calculation control part in embodiment of this invention performs according to the battery voltage at the time of a supplementary charge start.

符号の説明Explanation of symbols

１１…充電回路、１２…商用電源、１３…バッテリ、１４…光源、１５…変換回路、１６…演算制御部、１７…スイッチ、１８…スイッチ駆動回路、１９…充電抵抗、２０…電流検出器、２１…電圧検出器、２２…出力装置、２３…充電パターン記憶部、２４…オンオフ制御手段、２５…内部抵抗演算手段、２６…演算結果記憶部、２７…寿命判定手段、２８…所定値記憶部、２９…電圧設定器、３０…電圧比較手段、３１…点灯装置

DESCRIPTION OF SYMBOLS 11 ... Charging circuit, 12 ... Commercial power supply, 13 ... Battery, 14 ... Light source, 15 ... Conversion circuit, 16 ... Calculation control part, 17 ... Switch, 18 ... Switch drive circuit, 19 ... Charging resistance, 20 ... Current detector, DESCRIPTION OF SYMBOLS 21 ... Voltage detector, 22 ... Output device, 23 ... Charging pattern memory | storage part, 24 ... On-off control means, 25 ... Internal resistance calculating means, 26 ... Calculation result memory | storage part, 27 ... Life determination means, 28 ... Predetermined value memory | storage part , 29 ... Voltage setting device, 30 ... Voltage comparison means, 31 ... Lighting device

Claims (6)

商用電源からの交流電圧を直流電圧に変換する変換回路と；
前記変換回路からバッテリへの給電を制御可能なスイッチと；
前記スイッチをオンオフして前記バッテリの間欠充電を行う間欠充電手段と；
前記間欠充電手段で間欠充電を行う際の補充電開始時のバッテリ電圧と補充電終了時のバッテリ電圧とを検出するバッテリ電圧検出手段と；
前記バッテリ電圧検出手段で検出した補充電開始時のバッテリ電圧と補充電終了時のバッテリ電圧との差電圧を充電電流で除算した値が所定値以上となったときバッテリ寿命と判断する寿命判定手段と；
を備えたことを特徴とする充電回路。 A conversion circuit for converting AC voltage from a commercial power source into DC voltage;
A switch capable of controlling power supply from the conversion circuit to the battery;
Intermittent charging means for intermittently charging the battery by turning on and off the switch;
Battery voltage detection means for detecting a battery voltage at the start of auxiliary charging and a battery voltage at the end of auxiliary charging when intermittent charging is performed by the intermittent charging means;
Life determination means for determining the battery life when the value obtained by dividing the difference voltage between the battery voltage at the start of auxiliary charging detected by the battery voltage detection means and the battery voltage at the end of auxiliary charging by a charging current exceeds a predetermined value. When;
A charging circuit comprising: 商用電源からの交流電圧を直流電圧に変換する変換回路と；
前記変換回路からバッテリへの給電を制御可能なスイッチと；
前記スイッチをオンオフして前記バッテリの間欠充電を行う間欠充電手段と；
前記間欠充電手段で間欠充電を行う際の補充電開始時のバッテリ電圧を検出するバッテリ電圧検出手段と；
前記バッテリ電圧検出手段で検出した補充開始時のバッテリ電圧が所定値を越えている場合には前記間欠充電手段での間欠充電の少なくとも１サイクルの補充電を省略させる電圧比較手段と；
を備えたことを特徴とする充電回路。 A conversion circuit for converting AC voltage from a commercial power source into DC voltage;
A switch capable of controlling power supply from the conversion circuit to the battery;
Intermittent charging means for intermittently charging the battery by turning on and off the switch;
Battery voltage detecting means for detecting a battery voltage at the start of auxiliary charging when intermittent charging is performed by the intermittent charging means;
Voltage comparison means for omitting at least one cycle of supplementary charging in the intermittent charging means when the battery voltage at the start of replenishment detected by the battery voltage detecting means exceeds a predetermined value;
A charging circuit comprising: 前記間欠充電手段は、前記バッテリの満充電後の補充電のオン時間を３秒以内としオフ時間を３０秒〜３分以内としたことを特徴とする請求項１または２記載の充電回路。   3. The charging circuit according to claim 1, wherein the intermittent charging unit sets an on time of auxiliary charge after full charging of the battery within 3 seconds and an off time within 30 seconds to 3 minutes. 前記間欠充電手段は、前記バッテリの満充電後の補充電のオン時間を３０秒以内としオフ時間を３０秒〜３分以内としたことを特徴とする請求項１または２記載の充電回路。   3. The charging circuit according to claim 1, wherein the intermittent charging means has an on-time of auxiliary charge within 30 seconds and an off-time of 30 seconds to 3 minutes after the battery is fully charged. 請求項１ないし４のいずれか一の充電回路と；
前記充電回路により間欠充電されるバッテリと；
停電時に前記バッテリより供給される電源により光源を点灯させる点灯装置と；
を備えたことを特徴とする非常用点灯装置。 A charging circuit according to any one of claims 1 to 4;
A battery that is intermittently charged by the charging circuit;
A lighting device that turns on the light source by the power supplied from the battery in the event of a power failure;
An emergency lighting device comprising: 器具本体と；
器具本体に設けられる光源と；
請求項５記載の非常用点灯装置と；
を備えたことを特徴とする照明装置。

An instrument body;
A light source provided in the instrument body;
An emergency lighting device according to claim 5;
An illumination device comprising:

JP2004278553A 2003-11-06 2004-09-24 Charging circuit, emergency lighting device and lighting device Expired - Fee Related JP4379283B2 (en)

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JP2020008520A (en) * 2018-07-12 2020-01-16 Fdk株式会社 Life determination method of energy storage system, and energy storage system
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JP6214032B2 (en) * 2013-08-08 2017-10-18 東芝テック株式会社 Charge control device and program

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JPH06339234A (en) * 1993-05-28 1994-12-06 Shin Kobe Electric Mach Co Ltd Charge controller
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JP3896888B2 (en) * 2002-04-10 2007-03-22 松下電工株式会社 Charger
JP2003304647A (en) * 2002-04-10 2003-10-24 Matsushita Electric Works Ltd Charging device

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CN110915056B (en) * 2018-01-03 2023-04-07 株式会社Lg新能源 Battery management system and method for optimizing internal resistance of battery
JP2020008520A (en) * 2018-07-12 2020-01-16 Fdk株式会社 Life determination method of energy storage system, and energy storage system
JP7231346B2 (en) 2018-07-12 2023-03-01 Fdk株式会社 Method for determining lifetime of power storage system, and power storage system

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