JPH08308132A - Feeding device for transmitter and its control method - Google Patents
Feeding device for transmitter and its control methodInfo
- Publication number
- JPH08308132A JPH08308132A JP12906895A JP12906895A JPH08308132A JP H08308132 A JPH08308132 A JP H08308132A JP 12906895 A JP12906895 A JP 12906895A JP 12906895 A JP12906895 A JP 12906895A JP H08308132 A JPH08308132 A JP H08308132A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- supply device
- voltage
- temperature
- storage battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は通信機用給電装置および
その制御方法に関するものであり、特にバックアップ用
の蓄電池温度に応じて充電電圧を制御する電源装置を備
えた通信機用給電装置およびその制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for a communication device and a control method thereof, and more particularly, to a power supply device for a communication device provided with a power supply device for controlling a charging voltage according to the temperature of a storage battery for backup. Regarding control method.
【０００２】[0002]
【発明の背景】有線電話等の通信機用給電装置は、多く
は局舎に設置した整流電源装置とバックアップ用の蓄電
池とを用いて継続安定した給電を行っている。ところが
近年では通信機器の高度な発展により、通信機用給電装
置は局舎にのみ設置するものでなく、比較的小容量の通
信機用給電装置を多数分散して局舎外に配置する形式が
増えつつある。このような用途の通信機用給電装置は、
ほぼ屋外の環境条件に等しい広い温度範囲で特性を保持
する必要がある。BACKGROUND OF THE INVENTION Most power supply devices for communication devices such as wire telephones use a rectifying power supply device installed in a station and a backup storage battery to supply power continuously and stably. However, in recent years, due to the advanced development of communication equipment, the power supply device for a communication device is not installed only in the station building, but a form in which a large number of power supply devices for a communication device having a relatively small capacity are dispersed and arranged outside the station building. It is increasing. The power supply device for communication equipment for such applications is
It is necessary to maintain the characteristics in a wide temperature range which is almost equal to the environmental conditions outdoors.
【０００３】[0003]
【発明が解決しようとする課題】ここで問題となるの
が、蓄電池の温度特性である。一般に蓄電池の端子間電
圧は温度に対してわずかに負の温度係数を有しているた
め、周囲温度が高くなると端子間電圧は減少する。した
がって高温領域でも充電電圧を一定値にしておくと、充
電電流が増加し、この増加した電流によってさらに蓄電
池が温度上昇し、ついには熱逸走を引き起こすことにな
る。本発明は、通信機用給電装置において、蓄電池の熱
逸走を防止するとともに、広い温度範囲で安定した円滑
な給電特性を得ることを課題とする。The problem here is the temperature characteristic of the storage battery. Generally, the terminal voltage of the storage battery has a slightly negative temperature coefficient with respect to the temperature, and therefore the terminal voltage decreases as the ambient temperature rises. Therefore, if the charging voltage is kept at a constant value even in a high temperature region, the charging current increases, and the temperature of the storage battery further rises due to this increased current, which eventually causes thermal runaway. It is an object of the present invention to prevent heat escape of a storage battery and obtain stable and smooth power feeding characteristics in a wide temperature range in a power feeding device for a communication device.
【０００４】[0004]
【課題を解決するための手段】この課題を解決するた
め、以下の手段を提案するものである。第１の手段とし
て、蓄電池を電源装置で充電しつつ負荷にほぼ一定電圧
を供給する通信機用給電装置において、前記蓄電池の近
傍に配設した温度検出手段と、この温度検出手段により
発生する負温度特性を有する基準電圧源と、この基準電
圧源と前記電源装置の電圧検出値とを比較する増幅手段
とからなる負温度係数制御手段と、前記電源装置の検出
値を比較して所定電圧を発生する電圧安定化制御手段
と、この電圧安定化制御手段と前記負温度係数制御手段
との信号を合成する合成手段とを備えることを特徴とす
る通信機用給電装置を提案する。To solve this problem, the following means are proposed. As a first means, in a power supply device for a communication device that charges a storage battery with a power supply device and supplies a substantially constant voltage to a load, a temperature detection means arranged near the storage battery and a negative temperature generated by the temperature detection means. Negative temperature coefficient control means comprising a reference voltage source having a temperature characteristic and an amplifying means for comparing the reference voltage source with the voltage detection value of the power supply device, and a predetermined voltage by comparing the detection value of the power supply device. A power supply device for a communication device is provided, which is provided with: a voltage stabilization control unit that generates the voltage stabilization control unit; and a combining unit that combines signals of the voltage stabilization control unit and the negative temperature coefficient control unit.
【０００５】第２の手段として、蓄電池を電源装置で充
電しつつ負荷にほぼ一定電圧を供給する通信機用給電装
置において、前記電源装置を常温領域においては一定電
圧を発生させ、高温領域においては負の温度係数の電圧
を発生させることを特徴とする通信機用給電装置の制御
方法を提案する。As a second means, in a power supply device for a communication device that charges a storage battery with a power supply device and supplies a substantially constant voltage to a load, the power supply device generates a constant voltage in a normal temperature region and in a high temperature region. We propose a method for controlling a power supply device for a communication device, which is characterized by generating a voltage having a negative temperature coefficient.
【０００６】[0006]
【実施例】図１により、本発明にかかる通信機用給電装
置の一実施例を説明する。まず構成を説明する。商用交
流電源１は電源装置３の入力端子に接続される。電源装
置３においては、通信機用の標準電圧である直流４８Ｖ
系に変換され出力される。この電源装置３の出力は蓄電
池５に接続され、さらにドロッパ７を介して出力端子
９，11に接続され、負荷13へと送られる。ドロッパ７は
蓄電池５の充電時電圧が所望の電圧値より高いので、そ
の差分を負担減少するための回路である。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a power supply device for a communication device according to the present invention will be described with reference to FIG. First, the configuration will be described. The commercial AC power supply 1 is connected to the input terminal of the power supply device 3. In the power supply device 3, a standard voltage of 48 V DC for communication equipment
It is converted to the system and output. The output of the power supply device 3 is connected to the storage battery 5, further connected to the output terminals 9 and 11 via the dropper 7, and sent to the load 13. The dropper 7 is a circuit for reducing the load of the difference because the voltage of the storage battery 5 during charging is higher than a desired voltage value.
【０００７】蓄電池５の側面にはサーミスタ４が配設さ
れて、蓄電池５の温度に対応してサーミスタ４によって
温度検出され、電源装置３の制御回路２に送られる。A thermistor 4 is disposed on the side surface of the storage battery 5, the temperature of which is detected by the thermistor 4 in correspondence with the temperature of the storage battery 5, and the temperature is sent to the control circuit 2 of the power supply device 3.
【０００８】制御回路２の機能については、大別して３
通りがある。まず常温領域における定電圧制御機能であ
り、次に高温領域の負温度係数制御機能であり、第３に
これらの合成機能である。以下この三つの機能別に構成
と作用を説明する。The function of the control circuit 2 is roughly divided into three.
There is a street. First, it has a constant voltage control function in the normal temperature region, then has a negative temperature coefficient control function in the high temperature region, and thirdly, it has a combined function. The configuration and operation will be described below for each of these three functions.
【０００９】[0009]
【定電圧制御機能】電源装置３の出力端子から引き出し
た一対の線路31,32 から制御回路２自身の動作電源を得
る。またこの一対の線路31,32 は電源装置３の出力電圧
検出線ともなる。線路31,32 には、抵抗器215,216 が接
続され、これらにより分圧された電圧が三端子レギュレ
ータ214 の検出端子に接続される。三端子レギュレータ
214は内部の基準電圧と安定化機能により、その出力端
子が接続される抵抗器213 との接続点ｄに所定の電圧が
発生する。[Constant voltage control function] The operating power supply of the control circuit 2 itself is obtained from the pair of lines 31 and 32 drawn from the output terminal of the power supply device 3. The pair of lines 31 and 32 also serve as output voltage detection lines of the power supply device 3. Resistors 215 and 216 are connected to the lines 31 and 32, and the voltage divided by these is connected to the detection terminal of the three-terminal regulator 214. Three-terminal regulator
A predetermined voltage is generated at the connection point d of the resistor 213 to which its output terminal is connected, due to the internal reference voltage and the stabilizing function of 214.
【００１０】[0010]
【負温度係数制御機能】負温度係数制御機能を行うため
には、まず所望の傾斜の負の温度係数をもった基準電圧
を作り、次に出力電圧検出値と比較する演算増幅器に入
力する。[Negative Temperature Coefficient Control Function] In order to perform the negative temperature coefficient control function, first, a reference voltage having a negative temperature coefficient with a desired slope is created, and then input to an operational amplifier for comparison with an output voltage detection value.
【００１１】負の温度係数をもった基準電圧を作り出す
ために、サーミスタ４の抵抗値は、温度によって大幅に
かつ指数関数的に変化するため、このまま使用しても理
想的な充電電圧制御とはならない。そこでサーミスタ４
に並列に抵抗器203 を接続し、さらに抵抗器202 を直列
に接続した上で抵抗器205 と並列に接続したコンデンサ
206 の回路により、ａ点に必要とする負の温度係数をも
った基準電圧の近似値を作り出す。In order to generate a reference voltage having a negative temperature coefficient, the resistance value of the thermistor 4 changes largely and exponentially with temperature. I won't. So the thermistor 4
A resistor 203 is connected in parallel with, a resistor 202 is connected in series, and a capacitor is connected in parallel with resistor 205.
The circuit of 206 produces an approximate value of the reference voltage having the negative temperature coefficient required at the point a.
【００１２】また出力電圧検出線として、線路31,32 に
は抵抗器217,218 が接続され、これらによりｅ点に分圧
された電圧が抵抗器207 を経てｂ点に検出電圧が発生す
る。Also, as output voltage detection lines, resistors 217 and 218 are connected to the lines 31 and 32, and the voltage divided by the points e is generated at the point b via the resistor 207.
【００１３】ａ点に発生する負の温度係数をもった基準
電圧と、ｂ点に発生する出力電圧検出値とを、それぞれ
演算増幅器200 の＋，−入力端子に接続することによ
り、演算増幅器200 の出力端子には所期の負温度係数制
御機能に対応した電圧を発生する。演算増幅器200 の出
力端子にはダイオード211 と抵抗器213 とフォトカプラ
212 の発光ダイオード部とが直列に接続され、この発光
ダイオード部からは電源装置３に信号を送る。なお、演
算増幅器200 の入出力端子間に接続された抵抗器208,20
9 およびコンデンサ210 は利得と特性を調整するもので
ある。By connecting the reference voltage having a negative temperature coefficient generated at the point a and the output voltage detection value generated at the point b to the + and-input terminals of the operational amplifier 200 respectively, the operational amplifier 200 is connected. A voltage corresponding to the desired negative temperature coefficient control function is generated at the output terminal of. The output terminal of the operational amplifier 200 is a diode 211, a resistor 213 and a photocoupler.
212 light emitting diode units are connected in series, and signals are sent from the light emitting diode units to the power supply device 3. In addition, the resistors 208, 20 connected between the input and output terminals of the operational amplifier 200
The 9 and the capacitor 210 adjust the gain and the characteristic.
【００１４】[0014]
【合成機能】これら定電圧制御機能と負温度係数制御機
能とは点ｄで合成される。ここで演算増幅器200 の出力
端子に直列接続されるダイオード211 があるため、三端
子レギュレータ214 の定電圧制御機能によって制御電圧
の上限に対応する、点ｄの電圧はクランプされて、図３
に示す特性が得られる。なお、電源装置３には電流制限
機能を備えており、出力の電圧電流特性がいわゆる垂下
特性である。この図３に示す電圧を蓄電池５に印加した
ときに、おおむね蓄電池の充電時特性に適合するよう設
定されているが、適正電流範囲を越えたときには垂下特
性が作用して、蓄電池５には必要にして適正十分な充電
電流が与えられる。[Combining Function] These constant voltage control function and negative temperature coefficient control function are combined at point d. Since there is a diode 211 connected in series to the output terminal of the operational amplifier 200, the voltage at the point d, which corresponds to the upper limit of the control voltage, is clamped by the constant voltage control function of the three-terminal regulator 214, so that the voltage shown in FIG.
The characteristics shown in are obtained. The power supply device 3 has a current limiting function, and the output voltage-current characteristic is a so-called drooping characteristic. When the voltage shown in FIG. 3 is applied to the storage battery 5, the storage battery 5 is set to generally match the charging characteristics of the storage battery. Then, a proper and sufficient charging current is given.
【００１５】以上述べた図２に示す実施例は、本発明の
一例であって同様の機能を行うために、変形することが
できる。例えばサーミスタ４については、他の種類の温
度検出手段にすることができる。また三端子レギュレー
タ214 については、基準電圧源と演算増幅器との組合せ
とすることができる。The above-described embodiment shown in FIG. 2 is an example of the present invention and can be modified in order to perform the same function. For example, the thermistor 4 may be another type of temperature detecting means. The three-terminal regulator 214 may be a combination of a reference voltage source and an operational amplifier.
【００１６】[0016]
【発明の効果】本発明は以上述べたような特徴を有して
いるので、バックアップ用蓄電池を使用した通信機用給
電装置を構成する際に、蓄電池温度に対応した最適な充
電電圧が設定できるため、理想的な蓄電池使用が可能と
なり、蓄電池の延命と熱逸走の防止の効果を奏する。Since the present invention has the characteristics as described above, an optimum charging voltage corresponding to the storage battery temperature can be set when a power supply device for a communication device using a backup storage battery is constructed. Therefore, it is possible to ideally use the storage battery, and it is possible to prolong the life of the storage battery and prevent thermal runaway.
【図１】本発明にかかる通信機用給電装置の一実施例を
示す図である。FIG. 1 is a diagram showing an embodiment of a power supply device for a communication device according to the present invention.
【図２】本発明にかかる通信機用給電装置における制御
回路の一実施例を示す図である。FIG. 2 is a diagram showing an example of a control circuit in the communication device power supply apparatus according to the present invention.
【図３】本発明にかかる通信機用給電装置における蓄電
池充電のための電圧と温度の関係の特性図である。FIG. 3 is a characteristic diagram of a relationship between voltage and temperature for charging a storage battery in the power supply device for a communication device according to the present invention.
１…商用交流電源 ２…制御回路 ３…電源装置
４…サーミスタ ５…蓄電池 ６…通信機用給電装置 ７…ドロッパ
９，11…出力端子 13…負荷 200 …演算増幅器 212…フォトカ
プラ 214 …三端子レギュレータ 220…ツェナー
ダイオード1 ... Commercial AC power supply 2 ... Control circuit 3 ... Power supply device
4 ... Thermistor 5 ... Storage battery 6 ... Communication device power supply device 7 ... Dropper 9, 11 ... Output terminal 13 ... Load 200 ... Operational amplifier 212 ... Photo coupler 214 ... Three-terminal regulator 220 ... Zener diode
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鈴木 ▲昇▼ 東京都千代田区内幸町１丁目１番６号 日 本電信電話株式会社内 (72)発明者 福田 佳史 東京都千代田区内幸町１丁目１番６号 日 本電信電話株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Suzuki ▲ Noboru 1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Yoshifumi Fukuda 1-1-1 Uchisaiwaicho, Chiyoda-ku, Tokyo No. 6 Nippon Telegraph and Telephone Corporation
Claims (2)
一定電圧を供給する通信機用給電装置において、 前記蓄電池の近傍に配設した温度検出手段と、この温度
検出手段により発生する負温度特性を有する基準電圧源
と、この基準電圧源と前記電源装置の電圧検出値とを比
較する増幅手段とからなる負温度係数制御手段と、 前記電源装置の検出値を比較して所定電圧を発生する電
圧安定化制御手段と、 この電圧安定化制御手段と前記負温度係数制御手段との
信号を合成する合成手段とを備えることを特徴とする通
信機用給電装置。1. A power supply device for a communication device, which supplies a substantially constant voltage to a load while charging a storage battery with a power supply device, and a temperature detecting means arranged near the storage battery, and a negative temperature generated by the temperature detecting means. Negative temperature coefficient control means including a reference voltage source having characteristics and an amplification means for comparing the reference voltage source with the voltage detection value of the power supply device, and a predetermined voltage by comparing the detection value of the power supply device A power supply device for a communication device, comprising: a voltage stabilization control means for controlling the voltage stabilization control means;
一定電圧を供給する通信機用給電装置において、前記電
源装置を常温領域においては一定電圧を発生させ、高温
領域においては負の温度係数の電圧を発生させることを
特徴とする通信機用給電装置の制御方法。2. A power supply device for a communication device, which supplies a substantially constant voltage to a load while charging a storage battery with a power supply device, wherein the power supply device generates a constant voltage in a normal temperature region and has a negative temperature coefficient in a high temperature region. A method for controlling a power supply device for a communication device, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12906895A JP3337104B2 (en) | 1995-04-28 | 1995-04-28 | Power supply device for communication device and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12906895A JP3337104B2 (en) | 1995-04-28 | 1995-04-28 | Power supply device for communication device and control method therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08308132A true JPH08308132A (en) | 1996-11-22 |
| JP3337104B2 JP3337104B2 (en) | 2002-10-21 |
Family
ID=15000297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12906895A Expired - Fee Related JP3337104B2 (en) | 1995-04-28 | 1995-04-28 | Power supply device for communication device and control method therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3337104B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006314025A (en) * | 2005-05-09 | 2006-11-16 | Sony Corp | Imaging apparatus and power supply method for the same |
| JP2010016944A (en) * | 2008-07-02 | 2010-01-21 | Panasonic Corp | Charging voltage control method, battery charger using the same, overcharge protection method, and battery pack using the same |
| JP2015144496A (en) * | 2014-01-31 | 2015-08-06 | 日立アプライアンス株式会社 | Dc power supply and air conditioner using the same |
-
1995
- 1995-04-28 JP JP12906895A patent/JP3337104B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006314025A (en) * | 2005-05-09 | 2006-11-16 | Sony Corp | Imaging apparatus and power supply method for the same |
| JP2010016944A (en) * | 2008-07-02 | 2010-01-21 | Panasonic Corp | Charging voltage control method, battery charger using the same, overcharge protection method, and battery pack using the same |
| JP2015144496A (en) * | 2014-01-31 | 2015-08-06 | 日立アプライアンス株式会社 | Dc power supply and air conditioner using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3337104B2 (en) | 2002-10-21 |
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