JPS6377333A - Controller for charging generator - Google Patents
Controller for charging generatorInfo
- Publication number
- JPS6377333A JPS6377333A JP21945686A JP21945686A JPS6377333A JP S6377333 A JPS6377333 A JP S6377333A JP 21945686 A JP21945686 A JP 21945686A JP 21945686 A JP21945686 A JP 21945686A JP S6377333 A JPS6377333 A JP S6377333A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- transistor
- switch element
- predetermined value
- 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
- 238000004804 winding Methods 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000005669 field effect Effects 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000001052 transient effect Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 9
- 239000003990 capacitor Substances 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 208000019901 Anxiety disease Diseases 0.000 description 2
- 230000036506 anxiety Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 210000004899 c-terminal region Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Control Of Charge By Means Of Generators (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は充電発電機の制御装置に係り、特に自動車等の
車両用の蓄電池の充電に好敵な充電発電機の制御装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device for a charging generator, and particularly to a control device for a charging generator that is suitable for charging storage batteries for vehicles such as automobiles.
従来の充電発電機の制御装置は、たとえば特開昭５８−
１６３２３８号公報に記載のように、界磁電流を制御す
る電圧調整方式において界磁巻線を直列に接続されるト
ランジスタの短絡破壊や外部からの強制短絡などにより
発生する電圧調整回路の無制御に関しては出力電圧が一
定の設定電圧を超えた場合に充電表示灯を点灯させて警
報を発するようにしていた。A conventional control device for a charging generator is, for example, disclosed in Japanese Patent Application Laid-open No. 1986-
As described in Publication No. 163238, regarding uncontrolled voltage regulation circuits that occur due to short-circuit destruction of transistors connected in series with field windings or forced short-circuits from the outside in a voltage regulation method for controlling field current. When the output voltage exceeded a certain set voltage, the charging indicator light was turned on to issue a warning.
上記従来技術は、界磁電流を制御する電圧調整方式にお
いて蓄電池と並列に接続された電気負荷が急速に切断さ
れた場合には過渡電圧が発生することが知られている。In the above-mentioned prior art, it is known that a transient voltage is generated when an electric load connected in parallel with a storage battery is rapidly disconnected in a voltage regulation method for controlling field current.
第２図はその過渡電圧波形の一例を示したもので、たと
えば時間ｔｏに高負荷が切断されると界磁巻線の一端の
Ｆ端子の電圧ＶＦ （Ｖ）とともに出力電圧Ｖａ（Ｖ）
にすぐに例えば１８Ｖの高電圧が発生し、その後の時間
ｔ！にて蓄電池電圧が例えば１４Ｖの設定電圧に落ちる
までの間は設定電圧以上の電圧が発生している。Figure 2 shows an example of the transient voltage waveform. For example, when a high load is disconnected at time to, the output voltage Va (V) increases with the voltage VF (V) at the F terminal at one end of the field winding.
A high voltage of, for example, 18V is generated immediately after the time t! Until the storage battery voltage drops to the set voltage of, for example, 14V, a voltage higher than the set voltage is generated.
したがってこのような過渡電圧が発生したさいには充電
表示灯が誤点灯する恐れがある問題点があった。Therefore, when such a transient voltage occurs, there is a problem that the charging indicator light may be erroneously turned on.
本発明の目的は、上記した負荷の急所時に発生する過渡
電圧と本来検出すべき界磁電流制御用のトランジスタの
短絡破壊などによる電圧調整回路の無制御状態で発生す
る過電圧とを区別して検出できる回路を備えて充電表示
灯の誤点灯を防止可能な充電発電機の制御装置を提供す
るにある。An object of the present invention is to distinguish and detect the transient voltage that occurs at the critical point of the load as described above, and the overvoltage that occurs in an uncontrolled state of the voltage regulation circuit due to short-circuit destruction of the transistor for controlling the field current that should be detected. An object of the present invention is to provide a control device for a charging generator that includes a circuit and can prevent a charging indicator light from being erroneously lit.
上記目的は、界磁巻線をオン・オフ制御する第１のスイ
ッチ素子の両端電圧を測る比較回路を設け、該比較回路
の出力と過電圧信号のＡＮＤ条件を満足する時に警報を
出す論理回路を備え、なお好ましくは上記比較回路への
入力電流を少なくした充電発電機の制御装置により達成
される。The above purpose is to provide a comparison circuit that measures the voltage across the first switching element that controls on/off of the field winding, and a logic circuit that issues an alarm when the AND condition of the output of the comparison circuit and the overvoltage signal is satisfied. This is achieved by a control device for the charging generator, which preferably has a reduced input current to the comparison circuit.
上記充電発電機の制御装置では、界磁巻線をオン・オフ
制御する第１のスイッチ素子が破壊により短絡されるか
外部から強制的に短絡された場合にはその両端電圧が低
くてかつ発電電圧が高い過電圧を発生するが、負荷の急
所時に第２図に示すような過渡電圧が発生した場合には
第１のスイッチ素子はオフ状態にあって両端電圧が高く
かつ出力電圧が高くなるので、上記第１のスイッチ素子
の両端電圧を測る比較回路の出力と上記出力電圧の過渡
電圧を含む過電圧の信号とのＡＮＤをとることにより、
上記過渡電圧と本来検出すべき過電圧とを区別して検出
できて過渡電圧による誤警報を防止可能にする。なお好
ましくは、上記第１のスイッチ素子の両端電圧を測定す
るさいに上記比較回路に流れ込む電流が多いと、上記第
１のスイッチ素子がオフ状態の時にも界磁巻線に電流が
流れて、充電発電機が高速回転しているさいに発電電圧
を抑制しにくくするので、上記比較回路への入力電流を
できる限り少なくするように考慮される。In the charging generator control device described above, if the first switching element that controls on/off of the field winding is short-circuited due to destruction or forcibly short-circuited from the outside, the voltage across it is low and no power is generated. However, if a transient voltage as shown in Figure 2 occurs at a critical point of the load, the first switch element is in the OFF state and the voltage across both ends becomes high and the output voltage becomes high. , by ANDing the output of the comparator circuit that measures the voltage across the first switch element and the overvoltage signal including the transient voltage of the output voltage,
The above-mentioned transient voltage and the overvoltage that should be detected can be detected separately, thereby making it possible to prevent false alarms due to the transient voltage. Preferably, if a large amount of current flows into the comparator circuit when measuring the voltage across the first switch element, current flows through the field winding even when the first switch element is in an off state, Since it is difficult to suppress the generated voltage when the charging generator is rotating at high speed, consideration is given to reducing the input current to the comparison circuit as much as possible.
以下に本発明の一実施例を第１図ないし第４図により説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
第１図は本発明による充電発電機の制御装置の一実施例
を示す回路図で、図示しない機関により駆動される発電
機を含む蓄電器への充電系統の回路図を示す。第１図に
おいて、１は発電機の電機子巻線、２は電機子巻線１に
磁束を供給する界磁巻線、３は電機子巻線１の交流出力
を直流に変換する３相余波整流器（整流装置）、４は３
相全波整流器３の出力に接続されて充電されるとともに
図示しない外部の負荷に電力を供給する？？ｆｆｉ池、
５はキースイッチ、６は一端がキースイッチ５を介して
蓄電池４に接続される充電表示灯（充電表示手段）であ
る、７は混成厚膜集積回路による電圧調整装置であり、
８は界磁者Ｉｓ２と直列に一端のＳ端子とＥ（接地）端
子間に接続されたパワートランジスタ（第１のスイッチ
素子）、９はフライホイールダイオード、１０は制御用
リニアモノリシックＩＣ，１１，１２，１３は抵抗器、
１４ａ。FIG. 1 is a circuit diagram showing an embodiment of a control device for a charging generator according to the present invention, and is a circuit diagram of a charging system for a condenser including a generator driven by an engine (not shown). In Figure 1, 1 is the armature winding of the generator, 2 is the field winding that supplies magnetic flux to armature winding 1, and 3 is the three-phase aftereffect that converts the AC output of armature winding 1 into DC. Rectifier (rectifier), 4 is 3
It is connected to the output of the phase full-wave rectifier 3 to be charged and also to supply power to an external load (not shown). ? ffi pond,
5 is a key switch; 6 is a charge indicator light (charge display means) whose one end is connected to the storage battery 4 via the key switch 5; 7 is a voltage regulator using a hybrid thick film integrated circuit;
8 is a power transistor (first switching element) connected in series with the fielder Is2 between the S terminal and the E (ground) terminal at one end, 9 is a flywheel diode, 10 is a linear monolithic IC for control, 11, 12 and 13 are resistors,
14a.
１４ｂは分圧抵抗器、１５ａ、１５ｂは分圧抵抗器、１
６．１７は抵抗器、１８は充電表示灯６と直列に他端の
Ｓ端子とＳ端子間に接続されたトランジスタ（第２のス
イッチ素子）、１９はコンデンサで装置が構成される。14b is a voltage dividing resistor, 15a and 15b are voltage dividing resistors, 1
The device is composed of a resistor 6.17, a transistor (second switch element) connected in series with the charging indicator light 6 between the S terminal and the S terminal at the other end, and a capacitor 19.
制御用モノリシックＩＣ１０で、１０１はツェナーダイ
オード、１０２はダイオードで定電圧回路を構成し、１
０３，１０４．１０５，１０６は比較器、１０７はダイ
オード、１０８はＡＮＤ回路、１０９はＯＲ回路、１１
３．１１４，１１５，１１６は参照電圧回路であり、比
較器１０３は蓄電池４の電圧を分圧抵抗器１４ａ、１４
ｂを介し検出してパワートランジスタ（第１のスイッチ
素子）８のベースにオン・オフ信号を与えることにより
蓄電池４の電圧を参照電圧回路１１３の第１の所定値に
制御する電圧調整回路を構成し、比較器１０６は発電機
の電機予巻Ｍｌの発電電圧をＳ端子より抵抗器１６とダ
イオード１０７とコンデンサ１９を介し検出して上記第
１の所定値より低い参照電圧回路１１６の第２の所定値
以下のときにＯＲ回路１０９を介しトランジスタ（第２
のスイッチ素子）１８を閉じる電圧検出回路を構成し、
比較器１０４は発電機の電機子巻線１の発電電圧すなわ
ち３相全波整流器３の出力電圧が上記第１の所定値より
高い参照電圧回路１１４の第３の所定値以上のときに出
力信号（過電圧信号）を出してＯＲ回路を介しトランジ
スタ（第２のスイッチ素子）１８を閉じるべき電圧検出
回路を構成する。ここに比較器１０５は本発明により設
けられパワートランジスタ（第１のスイッチ素子）８の
端子間電圧を検出して参照電圧回路１１５の一定値以上
のときに出力信号を出す比較回路（電圧検出回路）を構
成し、ＡＮＤ回路１０８は該比較器１０５の出力信号が
発生していてかつ上記比較器１０４の出力信号（過電圧
信号）が出されるＡＮＤ条件を満足するときにＯＲ回路
１０９を介しトランジスタ（第２のスイッチ素子）１８
を閉じるように働いて充電表示灯（充電表示手段）６を
点灯させ警報せしめる論理回路を構成する。A control monolithic IC 10 includes a Zener diode 101 and a diode 102 to form a constant voltage circuit.
03, 104. 105, 106 are comparators, 107 is a diode, 108 is an AND circuit, 109 is an OR circuit, 11
3. 114, 115, 116 are reference voltage circuits, and the comparator 103 divides the voltage of the storage battery 4 into the voltage dividing resistors 14a, 14.
constitutes a voltage adjustment circuit that controls the voltage of the storage battery 4 to the first predetermined value of the reference voltage circuit 113 by detecting the voltage through the power transistor (first switching element) 8 and applying an on/off signal to the base of the power transistor (first switching element) 8. However, the comparator 106 detects the generated voltage of the electric machine prewinding Ml of the generator from the S terminal through the resistor 16, the diode 107, and the capacitor 19, and detects the second voltage of the reference voltage circuit 116 lower than the first predetermined value. When the value is below a predetermined value, the transistor (second
constitutes a voltage detection circuit that closes the switch element) 18,
The comparator 104 outputs an output signal when the generated voltage of the armature winding 1 of the generator, that is, the output voltage of the three-phase full-wave rectifier 3 is higher than the third predetermined value of the reference voltage circuit 114, which is higher than the first predetermined value. This constitutes a voltage detection circuit that outputs an overvoltage signal and closes the transistor (second switch element) 18 via an OR circuit. Here, the comparator 105 is provided according to the present invention, and is a comparator circuit (voltage detection circuit) that detects the voltage between the terminals of the power transistor (first switching element) 8 and outputs an output signal when the voltage is equal to or higher than a certain value of the reference voltage circuit 115. ), and the AND circuit 108 connects the transistor ( second switch element) 18
This constitutes a logic circuit that works to close the charge indicator light (charge display means) 6 and to issue an alarm.
上記構成において、キースイッチ５を投入すると、蓄電
池４からキースイッチ５とＩＯ端子と抵抗器１２を通し
てパワートランジスタ８ヘベース電流が供給されてパワ
ートランジスタ８が導通することにより、蓄電池４から
Ｓ端子と界磁巻線２とＳ端子とパワートランジスタ８と
Ｓ端子を通って励磁電流が流れる。ついで図示しない機
関により発電機が回転を開始すると電機子巻線１に発電
電圧が発生し、３相全波整流器３を介して全波整流され
た出力電圧によりＳ端子より蓄電池４が充電される。さ
ぎのキースイッチ５が投入された時点で、抵抗器１１を
介して制御用モノリシックＩＣ１０の中のツェナーダイ
オード１０１とダイオード１０２からなる定電圧回路に
一定電圧Ｖｃｃが発生して、電圧調整回路の比較機１０
３が駆動されている。したがって上記電機子巻線１の発
電電圧すなわち３相全波整流機３の出力電圧がが低くて
同時に蓄電池４の電圧が低いときには、蓄電池４の電圧
をＳ端子を介し分圧する分圧抵抗器１４ａ。In the above configuration, when the key switch 5 is turned on, a base current is supplied from the storage battery 4 to the power transistor 8 through the key switch 5, the IO terminal, and the resistor 12, and the power transistor 8 becomes conductive. Excitation current flows through the magnetic winding 2, the S terminal, the power transistor 8, and the S terminal. Then, when the generator starts rotating by an engine (not shown), a generated voltage is generated in the armature winding 1, and the storage battery 4 is charged from the S terminal by the output voltage that is full-wave rectified via the three-phase full-wave rectifier 3. . When the rabbit key switch 5 is turned on, a constant voltage Vcc is generated in the constant voltage circuit consisting of the Zener diode 101 and the diode 102 in the control monolithic IC 10 through the resistor 11, and the voltage adjustment circuit is compared. Machine 10
3 is being driven. Therefore, when the generated voltage of the armature winding 1, that is, the output voltage of the three-phase full-wave rectifier 3, is low and at the same time the voltage of the storage battery 4 is low, the voltage dividing resistor 14a divides the voltage of the storage battery 4 through the S terminal. .
１４ｂの分圧点の電圧が参照電圧回路１１３の電圧（第
１の設定値）より低いと、比較器１０３の出力は高レベ
ルとなってパワートランジスタ８が導通し、界磁巻線２
に界磁電流が流れている。ついで界磁電流の増加ととも
に発電電圧も上昇してＷｆｆｉ池４の電圧が高くなるた
め１分圧抵抗器１４ａ。When the voltage at the voltage dividing point 14b is lower than the voltage (first set value) of the reference voltage circuit 113, the output of the comparator 103 becomes high level, the power transistor 8 becomes conductive, and the field winding 2
A field current is flowing through. Next, as the field current increases, the generated voltage also rises, and the voltage of the Wffi battery 4 becomes higher, so the voltage of the voltage dividing resistor 14a increases.
１４ｂの分圧電圧が参照電圧回路１１３の電圧より高く
なった時点で、比較器１０３の出力は低レベルとなって
パワートランジスタ８が遮断され、界磁巻線２の界磁電
流はフライホイールダイオード９を通して減衰する。す
ると界磁電流の減少とともに発電電圧も低下して蓄電池
４の電圧が低くなるため、以上の動作を繰り返して蓄電
池４の電圧は一定値に制御される。14b becomes higher than the voltage of the reference voltage circuit 113, the output of the comparator 103 becomes a low level, the power transistor 8 is cut off, and the field current of the field winding 2 is transferred to the flywheel diode. Attenuates through 9. Then, as the field current decreases, the generated voltage also decreases and the voltage of the storage battery 4 becomes low, so the voltage of the storage battery 4 is controlled to a constant value by repeating the above operation.
一方で充電表示灯６は発電機の電機子巻線１に発生する
発電電圧が低いときには、Ｓ端子より抵抗器１６とダイ
オード１０７を通ってコンデンサ１９に充電される電圧
が低いため、上記参照電圧回路１１３の第１の所定値よ
りも低い参照電圧回路１１６の第２の所定値よりも低い
と、比較器１０６の出力は高レベルとなりＯＲ回路１０
９の出力も高レベルとなってトランジスタ１８が導通し
、点灯する。つぎに発電機が正常に発電を行なっている
ときには、電機子巻線１の発電電圧が高くて抵抗器１６
とダイオード１０７を通ってコンデンサ１９に充電され
る電圧も高くなるため、参照電圧回路１１６の第２の所
定値よりも高くなって比較器１０６の出力は低レベルと
なり、かつ正常な発電によりＡＮＤ回路１０８の出力も
低レベルであればＯＲ回路１０９の出力も低レベルとな
ってトランジスタ１８が遮断され、充電表示灯６は消灯
する。On the other hand, when the generated voltage generated in the armature winding 1 of the generator is low, the charging indicator light 6 indicates that the voltage charged to the capacitor 19 from the S terminal through the resistor 16 and the diode 107 is low. When the voltage is lower than the second predetermined value of the reference voltage circuit 116 which is lower than the first predetermined value of the circuit 113, the output of the comparator 106 becomes high level and the OR circuit 10
The output of 9 also becomes high level, transistor 18 becomes conductive, and the light is turned on. Next, when the generator is generating power normally, the generated voltage of the armature winding 1 is high and the resistor 16
Since the voltage charged to the capacitor 19 through the diode 107 also increases, it becomes higher than the second predetermined value of the reference voltage circuit 116, and the output of the comparator 106 becomes a low level, and due to normal power generation, the AND circuit If the output of the OR circuit 108 is also at a low level, the output of the OR circuit 109 is also at a low level, the transistor 18 is cut off, and the charging indicator lamp 6 is turned off.
さらに電圧調整回路のパワートランジスタ８が短絡破壊
したり両端のＦ端子とＥ端子間に導電性物質が付着した
りするなどに起因して、界磁巻線２の一端のＦ端子の電
位がＥ端子の接地電位に強制的に短絡された場合には、
界磁巻線２の界ｍ電流をオン・オフ制御する電圧調整回
路が制御不能となって発電機の出力電圧が無制御となる
。このためキースイッチ５を介して分圧抵抗器１５ａ。Furthermore, the potential of the F terminal at one end of the field winding 2 may be reduced to E due to short-circuit breakdown of the power transistor 8 of the voltage adjustment circuit or adhesion of conductive substances between the F terminal and the E terminal at both ends. If the terminal is forcibly shorted to ground potential,
The voltage regulating circuit that controls on/off the field current of the field winding 2 becomes uncontrollable, and the output voltage of the generator becomes uncontrolled. For this purpose, the voltage dividing resistor 15a is connected via the key switch 5.
１５ｂの分圧点の電圧が上記参照電圧回路１１３の第１
の所定値よりも高い参照電圧回路１１４の第３の所定値
より高くなると、比較器１０４の出力信号（過電圧信号
）が高レベルとなる。このとき一方の比較器１０５の出
力は上記に起因してＦ端子とＥ端子間の電圧すなわちパ
ワートランジスタ８の端子間電圧が低くて参照電圧回路
１１５の一定値以下になれば高レベルとなる。したがっ
てＡＮＤ回路１０８の出力が高レベルとなるので、ＯＲ
回路１０９の出力も高レベルとなってトランジスタ１８
が導通しても充電表示灯６が点灯し警報する。The voltage at the voltage dividing point 15b is the first voltage of the reference voltage circuit 113.
When the third predetermined value of the reference voltage circuit 114, which is higher than the predetermined value of , the output signal (overvoltage signal) of the comparator 104 becomes high level. At this time, the output of one comparator 105 becomes high level if the voltage between the F terminal and the E terminal, that is, the voltage between the terminals of the power transistor 8 is low and becomes below a certain value of the reference voltage circuit 115 due to the above-mentioned reason. Therefore, the output of the AND circuit 108 becomes high level, so the OR
The output of the circuit 109 also becomes high level, and the transistor 18
Even if it becomes conductive, the charging indicator light 6 lights up and gives an alarm.
この一方で高速運転中に負荷を急所した場合などには１
例えば０．５秒程度の過渡的な過電圧が発生する。第２
図はこの過渡電圧波形の一例を示した波形図である。第
２図において、界磁巻線２の一端のＦ端子の電圧ＶＦ（
Ｖ）がたとえば１４Ｖでオン・オフして発電機のＢ端子
の出力電圧Ｖａ （Ｖ）が１４Ｖで運転中に、時間ｔｏ
で高負荷が切断されるとすぐにＦ端子の電圧ＶＦ （Ｖ
）とともに発電機の出力電圧ＶＢ（Ｖ）がたとえば１８
■の高電圧となり１時間ｔｏ以後の時間ｔ１で蓄電池４
の電圧がたとえば１４Ｖの設定電圧に落ちるまでの間は
設定電圧以上の過渡的な過電圧が発生する。このため分
圧抵抗器１５ａ、１５ｂの分圧電圧が参照電圧回路１１
４の第３の所定値より高くなると、比較器１０４の出力
信号（過電圧信号）が高レベルとなる。しかしこのとき
一方の比較器１０５の出力は上記Ｆ端子のＥ端子に対す
る電圧ＶＦ（Ｖ）も高くて参照電圧回路１１５の一定値
以上であれば低レベルとなり、したがってＡＮＤ回１１
０８の出力は低レベルのままとなってトランジスタ１８
が遮断されて充電表示灯６は点灯しない、よって第２図
のような過渡電圧による誤動作が防止される。On the other hand, if the load is applied to a critical point during high-speed operation, 1
For example, a transient overvoltage of about 0.5 seconds occurs. Second
The figure is a waveform diagram showing an example of this transient voltage waveform. In FIG. 2, the voltage VF(
V) is turned on and off at, for example, 14V, and the output voltage Va (V) at the B terminal of the generator is 14V, and the time to
As soon as the high load is disconnected at , the voltage at the F terminal VF (V
) and the output voltage VB (V) of the generator is, for example, 18
■The high voltage becomes high, and at time t1 after 1 hour to, storage battery 4
Until the voltage drops to the set voltage of 14V, for example, a transient overvoltage higher than the set voltage occurs. Therefore, the divided voltage of the voltage dividing resistors 15a and 15b is the same as that of the reference voltage circuit 11.
4, the output signal (overvoltage signal) of the comparator 104 becomes high level. However, at this time, the output of one comparator 105 becomes a low level if the voltage VF (V) of the F terminal to the E terminal is also high and exceeds a certain value of the reference voltage circuit 115, and therefore, the AND circuit 11
The output of transistor 08 remains at a low level and the output of transistor 18
is cut off and the charging indicator lamp 6 does not light up, thereby preventing malfunctions caused by transient voltages as shown in FIG.
上記実施例によれば、充電発電機に負荷の急所などによ
り発生する過渡電圧と制御用パワートランジスタ８の短
絡破壊などに起因して発生する過電圧とを区別できるの
で、誤点灯により運転者に与える不安感を取り除くこと
ができる。また制御回路をリニアモノリシックＩＣ：１
０で構成できるので、安価に実現可能である。According to the above embodiment, it is possible to distinguish between the transient voltage generated in the charging generator due to a vital point of the load, and the overvoltage generated due to a short-circuit breakdown of the control power transistor 8. You can get rid of anxiety. In addition, the control circuit is a linear monolithic IC: 1
Since it can be configured with 0, it can be realized at low cost.
つぎに第３図は第１図の比較器（比較回路）１０５の一
実施例を示す内部回路図である。第３図において、２０
１，２０２は定電流ｇ（定電流回路）、２０３，２０４
，２０５，２０６はＰＮＰトランジ、ｌ、２０７，２０
８，２０９はＮＰＮトランジスタで、ａ端子は反転入力
端子、ｂ端子は非反転入力端子、Ｃ端子は出力端子であ
る。この構成で、上記界磁巻線２の一端のＦ端子に抵抗
１７を介して接続する入力端子ａのＦＭ１子とＥ端子間
の電圧すなわちパワートランジスタ８の端子間電圧が参
照電圧回路１１５に接続する入力端子すの一定値の電圧
よりも低いときには、ＰＮＰトランジスタ２０４，２０
３が導通して一定電圧Ｖｃｃに接続した定電流源２０１
からの電流はＰＮＰトランジスタ２０４からＮＰＮトラ
ンジスタ２０７へ流れるため、ＮＰＮトランジスタ２０
９が遮断となって出力端子ａの電圧は高レベルとなる。Next, FIG. 3 is an internal circuit diagram showing one embodiment of the comparator (comparison circuit) 105 of FIG. 1. In Figure 3, 20
1,202 is constant current g (constant current circuit), 203,204
, 205, 206 are PNP transitions, l, 207, 20
8, 209 is an NPN transistor, the a terminal is an inverting input terminal, the b terminal is a non-inverting input terminal, and the C terminal is an output terminal. With this configuration, the voltage between the FM1 terminal of the input terminal a connected to the F terminal at one end of the field winding 2 via the resistor 17 and the E terminal, that is, the voltage between the terminals of the power transistor 8 is connected to the reference voltage circuit 115. When the voltage of the input terminal S is lower than a certain value, the PNP transistors 204 and 20
3 is conductive and connected to a constant voltage Vcc, a constant current source 201
Since the current flows from PNP transistor 204 to NPN transistor 207, NPN transistor 20
9 is cut off and the voltage at output terminal a becomes high level.
また逆に入力端子ａの電圧が入力端子すの一定値の電圧
よりも高いときには、ＰＮＰ トランジスタ２０５．２
０６が導通して定電流源２０１からの電流はＰＮＰ ト
ランジスタ２０５からＮＰＮ トランジスタ２０９のベ
ースへ流れるため、定電流源２０２に接続したＮＰＮト
ランジスタ２０９が導通して出力端子Ｃの電圧は低レベ
ルとなる。Conversely, when the voltage at input terminal a is higher than the constant voltage at input terminal A, PNP transistor 205.2
06 becomes conductive and the current from the constant current source 201 flows from the PNP transistor 205 to the base of the NPN transistor 209, so the NPN transistor 209 connected to the constant current source 202 becomes conductive and the voltage at the output terminal C becomes a low level. .
本実施例によれば、比較器（比較回路）１０５の入力段
に定電流源（定電流回路）により導通電流が制限された
トランジスタを用いており、パワートランジスタ８がＮ
ＰＮトランジスタでかつ入力段トランジスタがＰＮＰト
ランジスタであって、パワートランジスタ８が遮断した
時に入力段トランジスタに電流が流れない回路構成とし
ているため、パワートランジスタ８が遮断している時に
はＦ端子電圧が高電圧であっても入力端子ａから比較器
１０５への電流の流れ込みがなく、シたがつて界磁巻線
２から比較器１０５を通って漏れ電流が流れることもな
くて、高速回転時に電圧制御が不可能になることもない
、なおパワートランジスタ８がＰＮＰトランジスタであ
れば、比較器１０５の入力段トランジスタはＮＰＮトラ
ンジスタとすればよい。According to this embodiment, a transistor whose conduction current is limited by a constant current source (constant current circuit) is used at the input stage of the comparator (comparison circuit) 105, and the power transistor 8 is
Since the input stage transistor is a PN transistor and the input stage transistor is a PNP transistor, and the circuit configuration is such that current does not flow to the input stage transistor when the power transistor 8 is cut off, the F terminal voltage is high when the power transistor 8 is cut off. However, no current flows from the input terminal a to the comparator 105, and no leakage current flows from the field winding 2 through the comparator 105, making voltage control possible during high-speed rotation. However, if the power transistor 8 is a PNP transistor, the input stage transistor of the comparator 105 may be an NPN transistor.
第４図は第１図の比較器（比較回路）１ｏ５の他の実施
例を示す内部回路図である６第４図において２０３ａ、
２０６ａはジャンクションＦＥＴで、ほか第３図と同一
符号は同一部分を示す。本実施例によれば、比較器１０
５の入力段に非常に高い入力インピーダンスを有するジ
ャンクションＦＥＴ （電界効果トランジスタ）を用い
ており、さらに界磁巻線２から比較器１０５への入方漏
れ電流を少なくできる。4 is an internal circuit diagram showing another embodiment of the comparator (comparison circuit) 1o5 in FIG. 1.6 In FIG. 4, 203a,
206a is a junction FET, and the same reference numerals as in FIG. 3 indicate the same parts. According to this embodiment, the comparator 10
A junction FET (field effect transistor) having a very high input impedance is used in the input stage of field winding 2, and leakage current flowing from field winding 2 to comparator 105 can be further reduced.
本発明によれば、充電発電機の制御装置において負荷の
急所などにより発生する過渡電圧と本来検出すべき制御
用トランジスタの短絡破壊などによる過電圧とを区別し
て検出できるので、充電表示灯の誤点灯などを防止可能
にして車両の運転者に不安感を与えない効果がある。According to the present invention, in the charging generator control device, it is possible to distinguish and detect transient voltages that occur due to vital points of the load and overvoltage caused by short-circuit destruction of control transistors that should be detected, so that the charging indicator light is turned on incorrectly. This has the effect of making it possible to prevent accidents such as this, thereby not causing a sense of anxiety to the driver of the vehicle.
第１図は本発明による充電発電機の制御装置の一実施例
を示す回路図、第２図は第１図の過渡電圧の波形図、第
３図は第１図の比較器１０５の一実施例を示す内部回路
図、第４図は第１図の比較器１０５の他の実施例を示す
内部回路図である。
１・・・発電機の電機子巻線、２・・・界磁巻線、３・
・・３相全波整流器（整流装置Ｅ） 、 ４・・・蓄電
池、５・・・キースイッチ、６・・・充電表示灯（充電
表示手段）、７・・・電圧調整装置、８・・・パワート
ランジスタ（第１のスイッチ素子）、９・・・フライホ
イールダイオード、１０・・・制御用モノリシックＩＣ
１１４ａ。
１４ ｂ 、 １５ ａ 、 １５ ｂ−分圧抵抗器、
１８−トランジスタ（第２のスイッチ素子）、１９・・
・コンデンサ、１０３・・・電圧調整回路の比較器、１
ｏ４・・・比較器（電圧検出回路）、１０５・・・比較
器（比較回路）、１０６・・・比較器（電圧検出回路）
、１０８・・・ＡＮＤ回路、１０９・・・ＯＲ回路、１
１３・・・参照電圧回路（第１の所定値）、１１４・・
・参照電圧回路（第３の所定値）、１１６・・・参照電
圧回路（第２の所定値）、２０１，２０２・・・定電流
源（定電流回路）、２０３，２０６・・・トランジスタ
。
２０３ ａ 、 ２０６ ａ−ジャンクションＦＥＴ
（電界効果トランジスタ）。
代理人 弁理士 小川勝馬、、％−’、、；−１’ｌ・
、。
１５．′−，ノ
第２０
第Ｊ 図
葛４０FIG. 1 is a circuit diagram showing an embodiment of the charging generator control device according to the present invention, FIG. 2 is a waveform diagram of the transient voltage shown in FIG. 1, and FIG. 3 is an implementation of the comparator 105 shown in FIG. 1. Internal Circuit Diagram Showing an Example FIG. 4 is an internal circuit diagram showing another embodiment of the comparator 105 of FIG. 1... Generator armature winding, 2... Field winding, 3...
... Three-phase full-wave rectifier (rectifier E), 4... Storage battery, 5... Key switch, 6... Charging indicator light (charging display means), 7... Voltage regulator, 8...・Power transistor (first switch element), 9... Flywheel diode, 10... Control monolithic IC
114a. 14 b, 15 a, 15 b - voltage dividing resistor,
18-transistor (second switch element), 19...
・Capacitor, 103... Voltage adjustment circuit comparator, 1
o4... Comparator (voltage detection circuit), 105... Comparator (comparison circuit), 106... Comparator (voltage detection circuit)
, 108...AND circuit, 109...OR circuit, 1
13... Reference voltage circuit (first predetermined value), 114...
- Reference voltage circuit (third predetermined value), 116... reference voltage circuit (second predetermined value), 201, 202... constant current source (constant current circuit), 203, 206... transistor. 203a, 206a-junction FET
(field effect transistor). Agent Patent Attorney Katsuma Ogawa, %-',;-1'l・
,. 15. '-, No. 20 J Figure 40
Claims (1)
する界磁巻線と、上記電機子巻線の交流出力を直流に変
換する整流装置と、該整流装置の出力により充電される
蓄電池と、上記界磁巻線と直列に接続された第１のスイ
ッチ素子と、上記蓄電池の電圧を検出して上記第１のス
イッチ素子にオン・オフ信号を与え上記蓄電池の電圧を
第１の所定値に制御する電圧調整回路と、上記蓄電池に
一端が接続された充電表示手段と、該充電表示手段の他
端より直列に接続された第２のスイッチ素子と、上記発
電機の発電電圧を検出して上記第１の所定値より低い第
２の所定値以下のときに上記第２のスイッチ素子を閉じ
るかまたは上記発電機の発電電圧を検出して上記第１の
所定値より高い第３の所定値以上でありかつ上記第１の
スイッチ素子の端子間電圧を比較回路により検出して一
定値以上のときに上記第２のスイッチ素子を閉じる電圧
検出回路とから成る充電発電機の制御装置。 ２、上記比較回路は定電流回路により導通電流が制限さ
れた入力段トランジスタを有する特許請求の範囲第１項
記載の充電発電機の制御装置。 ３、上記第１のスイッチ素子はＮＰＮトランジスタであ
りかつ上記比較回路の上記入力段トランジスタはＰＮＰ
トランジスタであつて、上記第１のスイッチ素子の遮断
時に上記界磁巻線から上記入力段トランジスタへ電流が
流れない回路構成とした特許請求の範囲第２項記載の充
電発電機の制御装置。 ４、上記第１のスイッチ素子はＰＮＰトランジスタであ
りかつ上記比較回路の上記入力段トランジスタはＮＰＮ
トランジスタであつて、上記第１のスイッチ素子の遮断
時に上記界磁巻線から上記入力段トランジスタへ電流が
流れない回路構成とした特許請求の範囲第２項記載の充
電発電機の制御装置。 ５、上記比較回路は定電流回路により導通電流が制限さ
れた入力段電界効果トランジスタを有する特許請求の範
囲第１項記載の充電発電機の制御装置。[Claims] 1. An armature winding of a generator, a field winding that supplies magnetic flux to the armature winding, and a rectifier that converts the AC output of the armature winding into DC; A storage battery charged by the output of the rectifier, a first switch element connected in series with the field winding, and a voltage of the storage battery detected and an on/off signal sent to the first switch element. a voltage regulating circuit for controlling the voltage of the storage battery to a first predetermined value; a charge display means having one end connected to the storage battery; and a second switch element connected in series from the other end of the charge display means. and detecting the generated voltage of the generator and closing the second switch element when the generated voltage is equal to or less than a second predetermined value lower than the first predetermined value, or detecting the generated voltage of the generator to A voltage detection circuit that detects the voltage between the terminals of the first switch element using a comparator circuit and closes the second switch element when the voltage is at least a third predetermined value higher than the first predetermined value and is at least a certain value. A charging generator control device consisting of. 2. The charging generator control device according to claim 1, wherein the comparison circuit includes an input stage transistor whose conduction current is limited by a constant current circuit. 3. The first switch element is an NPN transistor, and the input stage transistor of the comparison circuit is a PNP transistor.
3. The control device for a charging generator according to claim 2, wherein the circuit is a transistor, and has a circuit configuration in which no current flows from the field winding to the input stage transistor when the first switch element is cut off. 4. The first switch element is a PNP transistor, and the input stage transistor of the comparison circuit is an NPN transistor.
3. The control device for a charging generator according to claim 2, wherein the circuit is a transistor, and has a circuit configuration in which no current flows from the field winding to the input stage transistor when the first switch element is cut off. 5. The control device for a charging generator according to claim 1, wherein the comparison circuit includes an input stage field effect transistor whose conduction current is limited by a constant current circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21945686A JPS6377333A (en) | 1986-09-19 | 1986-09-19 | Controller for charging generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21945686A JPS6377333A (en) | 1986-09-19 | 1986-09-19 | Controller for charging generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6377333A true JPS6377333A (en) | 1988-04-07 |
Family
ID=16735709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21945686A Pending JPS6377333A (en) | 1986-09-19 | 1986-09-19 | Controller for charging generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6377333A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6462517B2 (en) | 2000-08-07 | 2002-10-08 | Denso Corporation | Voltage regulator of vehicle AC generator |
-
1986
- 1986-09-19 JP JP21945686A patent/JPS6377333A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6462517B2 (en) | 2000-08-07 | 2002-10-08 | Denso Corporation | Voltage regulator of vehicle AC generator |
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