JPH0428191Y2 - - Google Patents

Description

【考案の詳細な説明】 ［技術分野］ 本考案は蓄電池の充電状態を表示する非常用電
源装置に関するものである。[Detailed Description of the Invention] [Technical Field] The present invention relates to an emergency power supply device that displays the state of charge of a storage battery.

［背景技術］ 第４図は従来のトランジスタインバータ回路の
ような非常点灯回路１の充電モニタを示してお
り、この従来例回路では間歇動作負荷であるトラ
ンジスタインバータ回路からなる非常点灯回路１
と、この非常点灯回路１の高周波出力で点灯され
る蛍光灯Ｌと、停電を検知する停電検知リレー
Ryと、交流電源３をトランスT₁で降圧して整流
器D₁で整流し、この整流出力で蓄電池Ｂを充電
する充電回路２とからなり、充電回路２には発光
ダイオードLEDと、抵抗R₂と、トランジスタQ₁
の直列回路を蓄電池Ｂと、充電電流検出要素を構
成する抵抗R₁との直列回路に並列接続して形成
する充電モニタ回路を付設してある。そして整流
出力には蛍光灯Ｌの始動時に発生するグローキツ
ク電圧や、誘導雷等により交流電源３入力に印加
されるサージ電圧、交流電源３を遮断した際、リ
レー励磁コイルやトランスT₁の１次コイルに生
じる逆起電圧、交流電源３の入り切りした場合の
リレー接点r₁の開閉によるトランスT₁の２次側
や発振トランスT₂に生じる逆起電圧等がトラン
ジスタQ₁等に影響を及ぼすのを除去する為と整
流出力を平滑する為にコンデンサC₁を接続して
ある。[Background Art] Fig. 4 shows a charge monitor for an emergency lighting circuit 1 such as a conventional transistor inverter circuit.
, a fluorescent lamp L that is lit by the high frequency output of this emergency lighting circuit 1, and a power outage detection relay that detects a power outage.
Ry, and a charging circuit 2 that steps down the AC power supply 3 with a transformer T ₁ , rectifies it with a rectifier D ₁ , and charges a storage battery B with the rectified output.The charging circuit 2 includes a light emitting diode LED and a resistor R ₂ . and transistor Q ₁
A charging monitor circuit is provided by connecting the series circuit of the storage battery B and the resistor _R1 , which constitutes the charging current detection element, in parallel. The rectified output includes the glow voltage that occurs when starting the fluorescent lamp L, the surge voltage that is applied to the AC power supply 3 input due to induced lightning, etc., and the relay excitation coil and the primary of the transformer T1 when the AC power supply ₃ is cut off. The back electromotive force generated in the coil, the back electromotive force generated on the secondary side of the transformer _T1 and the oscillation transformer T2 due to the opening and closing of the relay contact _r1 when the AC power supply ₃ is turned on and off, etc., affect the transistor _Q1 etc. A capacitor _C1 is connected to remove this and smooth the rectified output.

而してこの回路では交流電源３が通電されてい
る状態では停電検知リレーRyが励磁されそのリ
レー接点r₁〜r₃を常開側接点NOに図示するよう
に夫々接続する。従つて蓄電池Ｂは非常点灯回路
１からは切り離され、充電回路２により充電され
る。この際充電電流は蓄電池Ｂ、抵抗R₁の回路
に流れ、その為抵抗R₁の両端には降下電圧が発
生し、この降下電圧によりトランジスタQ₁がバ
イアスされ、抵抗R₃を介してベース電流が流れ
る。トランジスタQ₁がオンすると発光ダイオー
ドLED、抵抗R₂、トランジスタQ₁の回路に電流
が流れ発光ダイオードLEDが点灯し充電状態を
表示する。ここで非常灯の場合Ni−Cd電池のよ
うな蓄電池Ｂの寿命は４乃至７年、器具寿命は７
年と言われており、器具寿命より電池寿命が短い
ため電池交換が可能なようにコネクタにより接続
されている。このため器具施工時に使用者（工事
者）がこのコネクタを接続することが必要となる
が、工事ミスにより接続されていない場合があ
る。この場合には交流電源３を通電すると、充電
電流が流れないため充電経路内の抵抗R₁には電
圧降下が無く、トランジスタQ₁はバイアスされ
ずオフを持続し、発光ダイオードLEDには発光
電流が流れず充電されていない旨を表示する。 In this circuit, when the AC power supply 3 is energized, the power failure detection relay Ry is energized and connects its relay contacts r ₁ to _{r 3} to the normally open contact NO, respectively, as shown. Therefore, the storage battery B is disconnected from the emergency lighting circuit 1 and charged by the charging circuit 2. At this time, the charging current flows through the circuit of storage battery B and resistor _R1 , and therefore a voltage drop occurs across resistor _R1.This voltage drop biases transistor _Q1 , and the base current flows through resistor _R3 . flows. When the transistor _Q1 is turned on, current flows through the circuit consisting of the light emitting diode LED, the resistor _R2 , and the transistor _Q1 , causing the light emitting diode LED to light up and display the charging state. In the case of emergency lights, the lifespan of storage battery B, such as a Ni-Cd battery, is 4 to 7 years, and the equipment life is 7 years.
Since the battery life is shorter than the equipment life, it is connected by a connector so that the battery can be replaced. For this reason, it is necessary for the user (constructor) to connect this connector when constructing the appliance, but it may not be connected due to a construction error. In this case, when AC power supply 3 is energized, charging current does not flow, so there is no voltage drop across resistor R ₁ in the charging path, transistor Q ₁ remains off without being biased, and light emitting current flows through light emitting diode LED. There is no flow, indicating that the battery is not being charged.

ところで交流電源３が停電して停電検知リレー
Ryが復帰すると、リレー接点r₁〜r₃が常開側接点
NOから常閉側接点NCに切替わり、蓄電池Ｂか
らは第５図ａ，ｂに示すような電流I_Z、電圧Ｖが
非常点灯回路１に流れ、印加される。これは非常
点灯回路１が間歇動作負荷であるためであり、そ
のため電池電圧Ｖが脈動してコンデンサC₁から
蓄電池Ｂ側に第６図及び第７図に示すような放電
電流i_Lが流れ、また蓄電池ＢからコンデンサC₁を
充電する電流i_Hが流れる。そのため電流i_Lが抵抗
R₁に電圧降下を発生させトランジスタQ₁をバイ
アスしてトランジスタQ₁をオンし発光ダイオー
ドLEDには発光電流を流して誤つた表示を行う
という問題があつた。この問題をダイオードを用
いて解決する手段を発明は既に特願昭60−184538
号において提案しているが種々の条件下で表示の
誤動作を防止するには高性能の部品が必要であ
り、構成も複雑で且つコストを上げるという問題
があつた。 By the way, AC power supply 3 has a power outage and the power outage detection relay
When Ry returns, relay contacts r ₁ to _{r 3} become normally open contacts.
Switching from NO to normally closed contact NC, current I _Z and voltage V as shown in FIGS. 5a and 5b flow from storage battery B to emergency lighting circuit 1 and are applied. This is because the emergency lighting circuit 1 is an intermittent operating load, so the battery voltage V pulsates and a discharge current i _L flows from the capacitor C ₁ to the storage battery B side as shown in FIGS. 6 and 7. Also, a current _iH flows from the storage battery B to charge the capacitor _C1 . Therefore, the current i _L is the resistance
There was a problem in that a voltage drop was generated across _R1 , biasing transistor _Q1 , turning on transistor _Q1 , and causing a light emitting current to flow through the light emitting diode LED, resulting in a false display. A means to solve this problem using diodes was already invented in patent application No. 60-184538.
However, in order to prevent malfunction of the display under various conditions, high-performance parts are required, the structure is complicated, and the cost increases.

一方間歇動作負荷を用いない回路のモニタ回路
としては実公昭59−714号公報に見られるように、
リレー接点の常開側接点NOを利用してモニタ回
路の入り切りを行うものがあつたが、この従来例
回路は白熱ランプを負荷とするものであつて、平
滑コンデンサの充放電を考慮する必要の無いもの
であつた。 On the other hand, as a monitor circuit for a circuit that does not use an intermittent operating load, as seen in Publication No. 1987-714,
There was a system that used the normally open contact NO of the relay contact to turn on and off the monitor circuit, but this conventional circuit uses an incandescent lamp as a load, so it is necessary to consider charging and discharging of the smoothing capacitor. It was something I didn't have.

［考案の目的］ 本考案は上述の問題点に鑑みて為されたもので
蓄電池により脈動電流が流れる負荷を駆動時する
際に表示素子が誤動作することがなく、しかも電
池接続不良時にはこれを表示素子の状態で示すこ
とができる非常用電源装置を提供するにある。[Purpose of the invention] The present invention was devised in view of the above-mentioned problems, and is designed to prevent the display element from malfunctioning when driving a load through which pulsating current flows using a storage battery, and to display this in the event of a poor battery connection. An object of the present invention is to provide an emergency power supply device that can be displayed in the state of elements.

［考案の開示］ 実施例 １ 第１図は本実施例を示し、基本的な回路は第４
図従来例と変わらず、ただ充電回路２には蓄電池
Ｂと非常点灯回路１との間に挿入した停電検知リ
レーRyのリレー接点r₁の常開側接点NOにアノー
ドを接続した発光ダイオードLEDと、抵抗R₂と、
トランジスタQ₁の直列回路を上記常開側接点NO
を介して蓄電池Ｂと、充電電流検出要素を構成す
る抵抗R₁との直列回路に並列接続して形成する
充電モニタ回路を付設してある点において相違す
るものである。[Disclosure of the invention] Example 1 Figure 1 shows this example, and the basic circuit is shown in the fourth example.
Figure Same as the conventional example, except that the charging circuit 2 includes a light emitting diode LED whose anode is connected to the normally open contact NO of the relay contact _r1 of the power failure detection relay Ry inserted between the storage battery B and the emergency lighting circuit 1. , with resistance R ₂ ,
Connect the series circuit of transistor Q ₁ to the above normally open contact NO
The difference is that a charging monitor circuit is provided which is connected in parallel to a series circuit of storage battery B and a resistor _R1 constituting a charging current detection element.

而して交流電源３が通電されている状態では停
電検知リレーRyが励磁されそのリレー接点r₁〜r₃
を常開側接点NOに図示するように夫々接続す
る。従つて蓄電池Ｂは非常点灯回路１からは切り
離され、充電回路２により充電される。この際充
電電流は蓄電池Ｂ、抵抗R₁の回路に流れ、その
為抵抗R₁の両端には降下電圧が発生し、この降
下電圧によりトランジスタQ₁がバイアスされ、
抵抗R₃を介してベース電流が流れる。そしてト
ランジスタQ₁は停電検知リレーRyの通電／停電
検知に連動して、コレクタ電流がオン／オフされ
るもので、停電検知リレーRyのリレー接点ｒと
ともにスイツチ要素を構成し、上記交流電源３が
通電されている時にはリレー接点r₁を介して、表
示素子たる発光ダイオードLED、抵抗R₂、トラ
ンジスタQ₁の直列回路がを充電回路２の出力端
子間に接続され、上記ベース電流が流れることに
よつてオンしたトランジスタQ₁のコレクタには
リレー接点r₁、表示素子たる発光ダイオード
LED、抵抗R₂を介してコレクタ電流が流れ、結
果この電流により発光ダイオードLEDが点灯し
充電状態を表示する。そして蓄電池Ｂの接続不良
時には交流電源３を通電すると、充電電流が流れ
ないため充電経路内の抵抗R₁には電圧降下が無
く、トランジスタQ₁はバイアスされずオフを持
続し、発光ダイオードLEDには発光電流が流れ
ず充電されていない旨を表示する。 When the AC power supply 3 is energized, the power failure detection relay Ry is energized and its relay contacts r ₁ to _{r 3} are energized.
Connect each to the normally open side contact NO as shown. Therefore, the storage battery B is disconnected from the emergency lighting circuit 1 and charged by the charging circuit 2. At this time, the charging current flows through the circuit of the storage battery B and the resistor _R1 , so a voltage drop occurs across the resistor _R1 , and this voltage drop biases the transistor _Q1 .
The base current flows through the resistor R ₃ . The collector current of the transistor Q ₁ is turned on/off in conjunction with the energization/power failure detection of the power failure detection relay Ry, and forms a switch element together with the relay contact r of the power failure detection relay Ry. When energized, a series circuit consisting of a light emitting diode LED as a display element, a resistor R ₂ , and a transistor Q ₁ is connected between the output terminals of the charging circuit 2 via the relay contact R ₁ , and the base current flows. The collector of the transistor Q ₁ , which is turned on, has a relay contact r ₁ and a light emitting diode, which is a display element.
Collector current flows through the LED and resistor _R2 , and as a result, this current lights up the light emitting diode LED to indicate the charging status. When AC power supply 3 is energized when battery B is poorly connected, charging current does not flow, so there is no voltage drop across resistor R ₁ in the charging path, transistor Q ₁ remains off without being biased, and the light emitting diode LED indicates that no light emitting current flows and the battery is not being charged.

尚交流通電時にスイツチSWを投入すると蛍光
灯Ｌは交流電源３、チヨークコイルCH、リレー
接点r₂、フイラメント、リレー接点r₃、グロー管
Ｇ、フイラメント、交流電源３の回路で電流が流
れ、蛍光灯Ｌを始動点灯させ、その後チヨークコ
イルCHにより交流点灯が維持される。 Furthermore, when the switch SW is turned on when AC power is applied, current flows through the circuit of AC power supply 3, chiyoke coil CH, relay contact r ₂ , filament, relay contact R ₃ , glow tube G, filament, and AC power supply 3 in the fluorescent lamp L, and the fluorescent lamp L is started and turned on, and then AC lighting is maintained by the chiyoke coil CH.

次に交流電源３が停電して停電検知リレーRy
が復帰すると、リレー接点r₁〜r₃が常開側接点
NOから常閉側接点NCに切替わり、蓄電池Ｂか
らは第５図ａ，ｂに示すような電流、電圧が非常
点灯回路１に流れ、印加されてそして電池電圧Ｖ
が脈動するためコンデンサC₁から蓄電池Ｂ側に
流れる電流ｉにより抵抗R₁に電圧降下が発生し、
トランジスタQ₁をバイアスするが、リレー接点r₁
が常閉側接点NCに切替わつているため、トラン
ジスタQ₁はオンせず、その結果発光ダイオード
LEDには発光電流が流れず、誤つた表示を行わ
ない。 Next, when the AC power supply 3 has a power outage, the power outage detection relay Ry
When returns, relay contacts r ₁ to _{r 3} become normally open contacts.
Switching from NO to the normally closed contact NC, current and voltage as shown in Figure 5 a and b flow from the storage battery B to the emergency lighting circuit 1 and are applied, and the battery voltage V
As the voltage pulsates, a voltage drop occurs across the resistor _R1 due to the current i flowing from the capacitor _C1 to the storage battery B side.
Bias transistor Q ₁ but relay contact r ₁
has switched to the normally closed contact NC, so transistor _Q1 does not turn on, resulting in the light emitting diode
No light emitting current flows through the LED, preventing false indications.

実施例 ２ 本実施例は第２図に示すように発光ダイオード
LEDのアノードの代わりにトランジスタQ₁のベ
ース回路をリレー接点r₁の常開側に接続したもの
で、非常点灯回路１が動作中にコンデンサC₁か
ら電流i_Lが流れてもトランジスタQ₁のベース回路
が遮断されるため、トランジスタQ₁がオンせず、
発光ダイオードLEDは点灯しない。つまりトラ
ンジスタQ₁は停電検知リレーRyの通電／停電検
知に連動してオン／オフ動作するスイツチ要素で
あり、交流電源３の通電時にはオン動作して発光
ダイオードLEDと、抵抗R₂との直列回路をトラ
ンジスタQ₁を介して充電回路２の出力端子間に
接続して発光ダイオードLEDを点灯させ、逆に
交流電源３の停電時には上記のようにオフ動作し
て、発光ダイオードLEDを消灯させる。尚トラ
ンジスタQ₁は蓄電池Ｂと抵抗R₁の接続点にリレ
ー接点r₁と抵抗R₃を介してベースを接続している
ため、蓄電池Ｂの接続が不良の状態で充電回路２
を働かした場合抵抗R₁に電流が流れずトランジ
スタQ₁がオンしないため、発光ダイオードLED
が点灯せず電池接続不良を知らせることができ
る。Example 2 This example uses a light emitting diode as shown in Figure 2.
The base circuit of transistor Q ₁ is connected to the normally open side of relay contact r ₁ instead of the anode of the LED, so that even if current i _L flows from capacitor C ₁ while emergency lighting circuit 1 is operating, transistor Q ₁ Since the base circuit is cut off, transistor _Q1 does not turn on,
Light emitting diode LED does not light up. In other words, the transistor Q ₁ is a switch element that turns on and off in conjunction with the energization/outage detection of the power failure detection relay Ry. When the AC power supply 3 is energized, it turns on and connects the light emitting diode LED to the series circuit with the resistor R ₂ . is connected between the output terminals of the charging circuit 2 via the transistor _Q1 to turn on the light emitting diode LED, and conversely, when the AC power supply 3 is out of power, it is turned off as described above to turn off the light emitting diode LED. Note that the base of transistor Q ₁ is connected to the connection point between storage battery B and resistor R ₁ via relay contact r ₁ and resistor R ₃ , so if the connection of storage battery B is defective, charging circuit 2
When _{the LED}
does not light up, indicating a poor battery connection.

実施例 ３ 本実施例は第３図に示すように充電経路に直列
挿入した抵抗R₄に並列に発光ダイオードLEDと
限流抵抗R₅との直列回路をリレー接点r₁の常用側
接点NOを介して蓄電池Ｂに接続したもので、充
電電流が流れると抵抗R₄の両端電圧が発光ダイ
オードLEDの順電圧より高くなるように抵抗値
を定めており、充電電流が流れると発光ダイオー
ドLEDが点灯される。また非常点灯時にはリレ
ー接点r₁が常閉側接点NCに接続されるため、コ
ンデンサC₁から電流i_Lが流れても発光ダイオード
LEDは点灯しない。Embodiment 3 In this embodiment, as shown in Fig. 3, a series circuit of a light emitting diode LED and a current limiting resistor R 5 is connected in parallel to a resistor R ₄ inserted in series in the charging path, and the normal use side contact NO of the relay contact R ₁ is connected in parallel to the resistor R ₄ inserted in series in the charging path. The resistance value is determined so that when charging current flows, the voltage across resistor _R4 becomes higher than the forward voltage of the light emitting diode LED, and when charging current flows, the light emitting diode LED lights up. be done. In addition, during emergency lighting, relay contact r ₁ is connected to normally closed contact NC, so even if current i _L flows from capacitor C ₁ , the light emitting diode
LED does not light up.

尚上記実施例ではトランジスタインバータ回路
を用いた非常点灯回路１を蓄電池Ｂの負荷として
いるが、例えばチヨツパ制御方式、点滅式等入力
電流が一定でなく電池電圧が脈動する負荷を用い
るものであれば本考案に摘要できるのは勿論のこ
とである。 In the above embodiment, the emergency lighting circuit 1 using a transistor inverter circuit is used as a load for the storage battery B, but if the input current is not constant and the battery voltage is pulsating, it may be used as a load such as a chopper control method or a blinking method. Of course, this can be summarized in the present invention.

［考案の効果］ 本考案は非常用電源装置において、上記充電回
路の出力端間に上記交流電源の停電時にオフ状態
となるスイツチ要素と上記表示素子とを直列的に
接続して設けたので、脈動電流が電流が負荷の動
作時に生じる電池電圧の脈動の影響を受けず、上
記負荷の駆動時においては表示素子を誤点灯させ
ることがなく、しかも蓄電池の接続不良時におい
て充電を行つた際には充電電流検出要素の働きに
より表示素子を点灯させず、電池接続不良を知ら
せることができるという効果を奏する。[Effects of the invention] The present invention provides an emergency power supply in which a switch element that is turned off in the event of a power outage of the AC power source and the display element are connected in series between the output terminal of the charging circuit. The pulsating current is not affected by the pulsations in the battery voltage that occur when the load is operating, the display element does not erroneously light up when the load is being driven, and the pulsating current does not cause the display element to erroneously light up when the storage battery is poorly connected. This has the effect of not lighting up the display element due to the function of the charging current detection element, and notifying the user of a battery connection failure.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例１の回路図、第２図、
は本考案の実施例２の回路図、第３図は本考案の
実施例３の回路図、第４図は従来例の回路図、第
５図〜第７図は同上の動作説明図であり、１は非
常点灯回路、２は充電回路、３は交流電源、C₁
はコンデンサ、Ｂは電池、LEDは発光ダイオー
ド、Ryは停電検出用リレー、r₁はリレー接点、
R₁は抵抗、Q₁はトランジスタである。 Figure 1 is a circuit diagram of Embodiment 1 of the present invention, Figure 2 is a circuit diagram of the first embodiment of the present invention;
3 is a circuit diagram of Embodiment 2 of the present invention, FIG. 3 is a circuit diagram of Embodiment 3 of the present invention, FIG. 4 is a circuit diagram of a conventional example, and FIGS. 5 to 7 are explanatory diagrams of the same operation. , 1 is an emergency lighting circuit, 2 is a charging circuit, 3 is an AC power supply, C ₁
is a capacitor, B is a battery, LED is a light emitting diode, Ry is a relay for power failure detection, _r1 is a relay contact,
R ₁ is a resistor and Q ₁ is a transistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 蓄電池と、この蓄電池に出力端間にコンデンサ
が接続され交流電源の入力を受けて整流出力を与
える充電回路と、この充電回路と蓄電池間に介挿
され蓄電池の充電電流を検出する充電電流検出要
素と、この充電電流が検出された場合に表示する
表示素子を備えた非常用電源装置において、上記
充電回路の出力端間に上記交流電源の停電時にオ
フ状態となるスイツチ要素と上記表示素子とを直
列的に接続して設けたことを特徴とする非常用電
源装置。 A storage battery, a charging circuit that has a capacitor connected to the output terminal of the storage battery and receives input from an AC power source and provides a rectified output, and a charging current detection element that is inserted between the charging circuit and the storage battery and detects the charging current of the storage battery. In an emergency power supply device equipped with a display element that displays when this charging current is detected, the display element is connected between an output terminal of the charging circuit and a switch element that is turned off in the event of a power outage of the AC power supply. An emergency power supply device characterized by being connected in series.