JPH05219657A - Controller of dc power supply for battery charging - Google Patents
Controller of dc power supply for battery chargingInfo
- Publication number
- JPH05219657A JPH05219657A JP4055976A JP5597692A JPH05219657A JP H05219657 A JPH05219657 A JP H05219657A JP 4055976 A JP4055976 A JP 4055976A JP 5597692 A JP5597692 A JP 5597692A JP H05219657 A JPH05219657 A JP H05219657A
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- ripple current
- battery
- detecting
- charging
- 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
Links
Classifications
-
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、蓄電池充電用直流電源
装置の制御装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a DC power supply device for charging a storage battery.
【０００２】[0002]
【従来の技術】図１は、本発明の一実施例を示すブロッ
ク図であるが、従来技術を説明するのにも役立つ図であ
るので、図１を参照して先ず従来技術を説明する。同図
において、１はＡＣ／ＤＣ変換部（例えばサイリスタ
等）、２は直流リアクトル、３は直流出力電流検出シャ
ント抵抗（ＳＨ１）、５は蓄電池、６は垂下電流検出
器、９は自動電圧調節器（ＡＶＲ）、１３は電圧検出
器、１４は検出確認タイマ、である。2. Description of the Related Art FIG. 1 is a block diagram showing an embodiment of the present invention, but since it is also a diagram useful for explaining the prior art, the prior art will be described first with reference to FIG. In the figure, 1 is an AC / DC converter (for example, a thyristor), 2 is a DC reactor, 3 is a DC output current detection shunt resistor (SH1), 5 is a storage battery, 6 is a drooping current detector, and 9 is automatic voltage adjustment. Reference numeral (AVR) 13 is a voltage detector, and 14 is a detection confirmation timer.
【０００３】従来の蓄電池充電用直流電源装置は、概ね
上述の構成要素から成っており、ＡＣ／ＤＣ変換部１で
直流に変換された電源は、直流リアクトル２でその脈動
を平滑化された後、負荷と蓄電池５へ供給され、蓄電池
５へは浮動充電を行っている。A conventional DC power supply device for charging a storage battery is generally composed of the above-mentioned components, and the power supply converted into DC by the AC / DC converter 1 has its pulsation smoothed by a DC reactor 2. , The load and the storage battery 5 are supplied, and the storage battery 5 is floating-charged.
【０００４】ここで、直流出力電流検出シャント抵抗３
を介して垂下電流検出器６で検出した負荷電流が、定格
電流の約１２０％という過負荷状態になると、垂下電流
検出器６は、自動電圧調節器（ＡＶＲ）９に指令を送っ
てＡＣ／ＤＣ変換部１を制御させ、その出力電圧を下げ
させる（蓄電池充電装置の保護を図る）というものであ
った。Here, the DC output current detecting shunt resistor 3
When the load current detected by the drooping current detector 6 via the overcurrent state is about 120% of the rated current, the drooping current detector 6 sends a command to the automatic voltage regulator (AVR) 9 to send AC / AC / The DC converter 1 is controlled and its output voltage is lowered (the storage battery charging device is protected).
【０００５】なお電圧検出器１３は、蓄電池５の電圧を
監視しており、蓄電池５の電圧が或る程度の時間にわた
って低下した状態にあると、タイマ１４が動作してアラ
ームを出力するようになっている。The voltage detector 13 monitors the voltage of the storage battery 5, and if the voltage of the storage battery 5 has dropped for a certain period of time, the timer 14 operates to output an alarm. Is becoming
【０００６】[0006]
【発明が解決しようとする課題】さて以上説明した如き
従来の蓄電池充電用直流電源装置では、蓄電池５へ流入
するリップル電流成分ｉ1 や、流出するリップル電流成
分ｉ2 が、蓄電池５の状態によっては、規定値を超えて
連続的に流れることがあり、そのため蓄電池５において
異常発熱（過熱）が起き、電池寿命の低下につながると
いう問題があった。In the conventional DC power supply device for charging a storage battery as described above, the ripple current component i 1 that flows into the storage battery 5 and the ripple current component i 2 that flows out depend on the state of the storage battery 5. May flow continuously beyond the specified value, which causes abnormal heat generation (overheating) in the storage battery 5, leading to a decrease in battery life.
【０００７】また蓄電池における充電というのは、浮動
充電のほか、蓄電池セル間にかかる電圧を高くして蓄電
池の回復（寿命の延長）を図るための均等充電を、長い
期間において時折実施することがあるが、このような場
合、適切に制御が行われないと、均等充電をやりすぎて
過充電となってかえって蓄電池を傷めたり、或いは均等
充電が不十分なまま浮動充電に切り替えてしまう、など
の問題があった。In addition to the floating charge, the charge in the storage battery is sometimes performed by performing a uniform charge for a long period of time in order to recover the storage battery (extend the service life) by increasing the voltage applied between the storage battery cells. However, in such a case, if proper control is not performed, overcharging will be overcharged and overcharged, which may damage the storage battery, or switching to floating charging with insufficient equalization, etc. There was a problem.
【０００８】本発明の目的は、かかる従来技術における
問題点を解決し、リップル電流成分の流入、流出による
蓄電池の異常発熱（電池寿命の低下）を阻止し、しかも
均等充電を行う際、その適切なタイミングで浮動充電動
作に復帰することができるようにした蓄電池充電用直流
電源装置の制御装置を提供することにある。The object of the present invention is to solve the above problems in the prior art, prevent abnormal heat generation (reduction of battery life) of the storage battery due to inflow and outflow of ripple current components, and moreover, to perform appropriate charging thereof. Another object of the present invention is to provide a control device for a DC power supply device for charging a storage battery, which is capable of returning to the floating charging operation at various timings.
【０００９】[0009]
【課題を解決するための手段】上記目的達成のため、本
発明では、定電圧充電形直流電源装置において、蓄電池
に流入、流出するリップル電流成分の各実効値の絶対値
の和を検出する手段と、検出された前記絶対値の和を或
る設定値と比較し、前者が後者を超えたらそのことを検
出して、自動電圧調節器を制御してＡＣ／ＤＣ変換部の
出力電圧を下げることにより、前記リップル電流成分を
低減させる比較手段と、蓄電池が回復充電のための均等
充電状態にあるとき、該蓄電池に流入するリップル電流
成分の平均値をもとめる手段と、求めた平均値電流の時
間的変化率が一定限度以下になったときそのことを検出
して蓄電池をそれまでの均等充電状態から浮動充電状態
へ切り替える手段と、を具備した。To achieve the above object, according to the present invention, in a constant voltage charging type DC power supply device, means for detecting the sum of absolute values of respective effective values of ripple current components flowing into and out of a storage battery. And the detected sum of the absolute values is compared with a certain set value, and when the former exceeds the latter, it is detected and the automatic voltage regulator is controlled to reduce the output voltage of the AC / DC converter. Thereby, comparing means for reducing the ripple current component, means for obtaining the average value of the ripple current component flowing into the storage battery when the storage battery is in the uniform charge state for recovery charging, and the obtained average value current And a means for detecting when the rate of change with time has fallen below a certain limit and switching the storage battery from the previously uniform charging state to the floating charging state.
【００１０】[0010]
【作用】本発明を実施することにより、蓄電池のリップ
ル電流成分の流入、流出による異常発熱（電池寿命の低
下）を阻止し、しかも均等充電を行う際、その適切なタ
イミングで浮動充電動作に復帰することができ、均等充
電の不適切による蓄電池の損傷などの弊害を除去するこ
とができる。By implementing the present invention, abnormal heat generation (reduction of battery life) due to inflow and outflow of ripple current components of the storage battery is prevented, and when performing uniform charging, the floating charging operation is restored at an appropriate timing. Therefore, it is possible to eliminate a harmful effect such as damage to the storage battery due to improper uniform charging.
【００１１】[0011]
【実施例】既に述べたように、図１は、本発明の一実施
例を示すブロック図である。同図において、先に説明し
たもののほか、４は蓄電池電流検出シャント抵抗（ＳＨ
２）、７はリップル電流成分の実効値を検出するための
リップル実効値電流検出回路、８は蓄電池へ流入するリ
ップル電流成分ｉ1 の平均値を検出する電流平均値検出
回路、１０はコンパレータ、１１は設定器、１２は均等
／浮動・切替器、である。DESCRIPTION OF THE PREFERRED EMBODIMENTS As mentioned above, FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, in addition to those described above, 4 is a storage battery current detection shunt resistance (SH
2), 7 are ripple effective value current detection circuits for detecting the effective value of the ripple current component, 8 is a current average value detection circuit for detecting the average value of the ripple current component i 1 flowing into the storage battery, 10 is a comparator, Reference numeral 11 is a setting device, and 12 is a uniform / floating / switching device.
【００１２】本発明に関係した回路動作を以下、説明す
る。蓄電池電流検出シャント抵抗（ＳＨ２）４の所で、
蓄電池５へ流入するリップル電流成分ｉ1 と、蓄電池５
から流出するリップル電流成分ｉ2 と、を検出する。リ
ップル電流成分の検出は、半波整流器、全波整流器など
を用いることにより行うことができる。The circuit operation related to the present invention will be described below. At the storage battery current detection shunt resistor (SH2) 4,
The ripple current component i 1 flowing into the storage battery 5 and the storage battery 5
Ripple current component i 2 flowing out from is detected. The ripple current component can be detected by using a half-wave rectifier, a full-wave rectifier, or the like.
【００１３】リップル実効値電流検出回路７では、蓄電
池に流入、流出するリップル電流成分の各実効値の絶対
値の和を算出する。即ち、流入するリップル電流成分ｉ
1 のピーク値ｉ1Pを、２の平方根で割って実効値を出
す。同様に流出するリップル電流成分ｉ2 のピーク値ｉ
2Pを、２の平方根で割って実効値を出す。それぞれの実
効値の二乗の和の平方根をとり、求める値を算出する。The ripple effective value current detection circuit 7 calculates the sum of the absolute values of the effective values of the ripple current components flowing into and out of the storage battery. That is, the inflowing ripple current component i
1 of the peak value i 1P, gives an effective value divided by the square root of two. Similarly, the peak value i of the ripple current component i 2 flowing out is
Divide 2P by the square root of 2 to get the effective value. Take the square root of the sum of the squares of the respective effective values and calculate the desired value.
【００１４】コンパレータ１０では、設定器１１により
予め設定された設定値とリップル実効値電流検出回路７
で算出された値とを比較し、後者が前者を超えると、蓄
電池５においてリップル電流成分による発熱が過大とな
るので、ＡＶＲ９を働かせてＡＣ／ＤＣ変換部（例えば
サイリスタ）１を制御し、その出力電圧を低下させ、蓄
電池５に流入、流出するリップル電流成分を減少させ
る。In the comparator 10, the set value preset by the setter 11 and the ripple effective value current detection circuit 7 are provided.
When the latter exceeds the former, the heat generated by the ripple current component in the storage battery 5 becomes excessive, so that the AVR 9 is activated to control the AC / DC converter (for example, thyristor) 1 and The output voltage is reduced, and the ripple current component flowing in and out of the storage battery 5 is reduced.
【００１５】図２は、このときの制御特性を示す特性図
である。即ち、図２において、横軸ｔは時間であり、縦
軸のｉは、リップル実効値電流検出回路７で算出した値
であり、Ｉｃ−Ｓｅｔは、設定器１１により予め設定さ
れた設定値を示す。ＶＢは蓄電池５の入力電圧である。
リップル実効値電流検出回路７で算出した値ｉが設定値
Ｉｃ−Ｓｅｔを超えると、制御が行われて蓄電池５の入
力電圧ＶＢが低下（ひいてはリップル電流成分が減少）
することが認められるであろう。FIG. 2 is a characteristic diagram showing the control characteristic at this time. That is, in FIG. 2, the horizontal axis t is time, the vertical axis i is a value calculated by the ripple effective value current detection circuit 7, and Ic-Set is a set value preset by the setter 11. Show. VB is the input voltage of the storage battery 5.
When the value i calculated by the ripple effective value current detection circuit 7 exceeds the set value Ic-Set, control is performed and the input voltage VB of the storage battery 5 decreases (and thus the ripple current component decreases).
It will be recognized that
【００１６】図１に戻る。電流平均値検出回路８は、蓄
電池５へ流入するリップル電流成分ｉ1 の平均値を算出
し、その値をモニタしている。そしてその値（平均値電
流）の時間的変化率が一定限度以下になったとき、その
ことを検出して均等／浮動・切替器１２に知らせる。す
ると該切替器１２は、蓄電池５がそれまで均等充電状態
にあったとすると、その状態から浮動充電状態へ切り替
える。Returning to FIG. The current average value detection circuit 8 calculates the average value of the ripple current component i 1 flowing into the storage battery 5, and monitors the value. When the temporal change rate of the value (average value current) falls below a certain limit, the fact is detected and the equalizing / floating / switching unit 12 is notified. Then, if it is assumed that the storage battery 5 has been in the uniform charge state until then, the switch 12 switches from that state to the floating charge state.
【００１７】切替は、切替器１２の出力を用いてＡＶＲ
９の電圧設定値を切り替えることにより行われる。従
来、このような切り替えは、蓄電池側の電圧を検出して
行っていたわけであるが、本発明では、蓄電池電流検出
シャント抵抗（ＳＨ２）４を設けて電流検出を行ってい
るので、それを利用し、電流検出により行うようにして
いる。The switching is performed by using the output of the switching device 12 for AVR.
This is performed by switching the voltage setting value of 9. Conventionally, such switching has been performed by detecting the voltage on the storage battery side, but in the present invention, since the storage battery current detection shunt resistor (SH2) 4 is provided for current detection, it is used. However, the current is detected.
【００１８】[0018]
【発明の効果】以上説明したように、本発明によれば、
リップル電流成分の流入、流出による蓄電池の異常発熱
（電池寿命の低下）を阻止し、しかも均等充電を行う
際、蓄電池電流のモニタにより、適切なタイミングで浮
動充電動作への復帰を図り得るという利点がある。As described above, according to the present invention,
The advantage of preventing abnormal heat generation (reduction of battery life) of the storage battery due to the inflow and outflow of ripple current components and, in addition, when performing uniform charging, can monitor the storage battery current and return to floating charging operation at an appropriate timing. There is.
【図１】本発明の一実施例を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】図１の蓄電池におけるリップル電流成分の制御
特性を示す特性図である。FIG. 2 is a characteristic diagram showing a control characteristic of a ripple current component in the storage battery of FIG.
１…ＡＣ／ＤＣ変換部、２…直流リアクトル、３…直流
出力電流検出シャント抵抗、４…蓄電池電流検出シャン
ト抵抗、５…蓄電池、６…垂下電流検出器、７…リップ
ル実効値電流検出回路、８…電流平均値検出回路、９…
自動電圧調節器（ＡＶＲ）、１０…コンパレータ、１１
…設定器、１２…均等／浮動・切替器、１３…電圧検出
器、１４…検出確認タイマ。DESCRIPTION OF SYMBOLS 1 ... AC / DC converter, 2 ... DC reactor, 3 ... DC output current detection shunt resistance, 4 ... Storage battery current detection shunt resistance, 5 ... Storage battery, 6 ... Droop current detector, 7 ... Ripple effective value current detection circuit, 8 ... Current average value detection circuit, 9 ...
Automatic voltage regulator (AVR), 10 ... Comparator, 11
... Setting device, 12 ... Equal / floating / switching device, 13 ... Voltage detector, 14 ... Detection confirmation timer.
Claims (1)
換部と、該変換部からの直流の脈動分を平滑化して負荷
及び蓄電池へ並列に供給する直流リアクトルと、該リア
クトルの出力電流を検出し、それが上限値に達したらそ
のことを検出する上限値検出手段と、該上限値検出手段
の検出出力により前記ＡＣ／ＤＣ変換部を制御してその
出力直流電圧を制御する自動電圧調節器と、から成る定
電圧充電形直流電源装置において、 前記蓄電池に流入、流出するリップル電流成分の各実効
値の絶対値の和を検出する手段と、検出された前記絶対
値の和を或る設定値と比較し、前者が後者を超えたらそ
のことを検出して、前記自動電圧調節器を制御してＡＣ
／ＤＣ変換部の出力電圧を下げることにより、前記リッ
プル電流成分を低減させる比較手段と、前記蓄電池が回
復充電のための均等充電状態にあるとき、該蓄電池に流
入するリップル電流成分の平均値をもとめる手段と、求
めた平均値電流の時間的変化率が一定限度以下になった
ときそのことを検出して前記蓄電池をそれまでの均等充
電状態から浮動充電状態へ切り替える手段と、を具備し
たことを特徴とする蓄電池充電用直流電源装置の制御装
置。1. An AC / DC converter for converting an AC power supply into a direct current, a DC reactor for smoothing a pulsating component of the DC from the converter and supplying it in parallel to a load and a storage battery, and an output current of the reactor. An upper limit value detecting means for detecting and detecting when it reaches the upper limit value, and an automatic voltage adjustment for controlling the AC / DC converter by the detection output of the upper limit value detecting means to control the output DC voltage. In the constant voltage charging type DC power supply device, the means for detecting the sum of the absolute values of the respective effective values of the ripple current components flowing in and out of the storage battery, and the detected sum of the absolute values are Compared with the set value, if the former exceeds the latter, it is detected and the automatic voltage regulator is controlled to control the AC.
A comparison unit that reduces the ripple current component by lowering the output voltage of the DC / DC converter, and an average value of the ripple current component that flows into the storage battery when the storage battery is in the equal charge state for recovery charging. And a means for detecting when the temporal change rate of the obtained average value current has fallen below a certain limit and for switching the storage battery from the equal charging state until then to the floating charging state. A control device for a DC power supply device for charging a storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4055976A JPH05219657A (en) | 1992-02-07 | 1992-02-07 | Controller of dc power supply for battery charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4055976A JPH05219657A (en) | 1992-02-07 | 1992-02-07 | Controller of dc power supply for battery charging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05219657A true JPH05219657A (en) | 1993-08-27 |
Family
ID=13014108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4055976A Pending JPH05219657A (en) | 1992-02-07 | 1992-02-07 | Controller of dc power supply for battery charging |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05219657A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100644337B1 (en) * | 2004-03-31 | 2006-11-10 | 엘에스전선 주식회사 | The manufacture method of the polyamideimide resin solution for high concentration type enamel copper wire clothing |
| JP2016131458A (en) * | 2015-01-14 | 2016-07-21 | Fdk株式会社 | Power supply system with balance function for float charging |
| JP2016131474A (en) * | 2015-01-15 | 2016-07-21 | Fdk株式会社 | Power supply system for float charging |
-
1992
- 1992-02-07 JP JP4055976A patent/JPH05219657A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100644337B1 (en) * | 2004-03-31 | 2006-11-10 | 엘에스전선 주식회사 | The manufacture method of the polyamideimide resin solution for high concentration type enamel copper wire clothing |
| JP2016131458A (en) * | 2015-01-14 | 2016-07-21 | Fdk株式会社 | Power supply system with balance function for float charging |
| JP2016131474A (en) * | 2015-01-15 | 2016-07-21 | Fdk株式会社 | Power supply system for float charging |
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