JP2009100488A - Alternator controller for vehicle - Google Patents

Alternator controller for vehicle Download PDF

Info

Publication number
JP2009100488A
JP2009100488A JP2007266516A JP2007266516A JP2009100488A JP 2009100488 A JP2009100488 A JP 2009100488A JP 2007266516 A JP2007266516 A JP 2007266516A JP 2007266516 A JP2007266516 A JP 2007266516A JP 2009100488 A JP2009100488 A JP 2009100488A
Authority
JP
Japan
Prior art keywords
power generation
voltage
vehicle
control device
generator
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
Application number
JP2007266516A
Other languages
Japanese (ja)
Other versions
JP4548469B2 (en
Inventor
Takahiko Tashiro
貴彦 田代
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Denso Corp filed Critical Denso Corp
Priority to JP2007266516A priority Critical patent/JP4548469B2/en
Priority to DE200810051078 priority patent/DE102008051078A1/en
Publication of JP2009100488A publication Critical patent/JP2009100488A/en
Application granted granted Critical
Publication of JP4548469B2 publication Critical patent/JP4548469B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
    • H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
    • H02P9/305—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices controlling voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Control Of Charge By Means Of Generators (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an alternator controller for vehicle, enabling an alternator to unfailingly start power generation upon start of an engine, and capable of stopping the output of a power generation stop alarm. <P>SOLUTION: The alternator controller 2 for a vehicle is provided with: a power generation circuit 13 for detecting whether or not the alternator 1 is in a power generation stop state; a communication control circuit 20 for outputting an alarm signal when it is detected that the alternator 1 is in a power generation stop state; an initial excitation control signal generating circuit 14 for supplying an initial excitation current to an excitation winding 33 of the alternator 1 when the rotation speed of the alternator is not more than a predetermined rotation speed and a power generation voltage is higher than an adjustment voltage; a switching circuit 12; and an MOS-FET 18. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、乗用車やトラック等に搭載される車両用発電機の出力電圧を制御する車両用発電制御装置に関する。   The present invention relates to a vehicle power generation control device that controls an output voltage of a vehicle generator mounted on a passenger car, a truck, or the like.

従来から、エンジン始動前の初期励磁電流を抑制するようにした発電制御装置が知られている（例えば、特許文献１参照。）。具体的には、この発電制御装置は、励磁電流の通電量を制御するスイッチ素子を備え、調整電圧と発電電圧を比較して調整電圧の方が高いときには励磁電流を流し、調整電圧の方が低いときには励磁電流を遮断するとともに、エンジン始動前は、励磁電流消費量を抑制する目的でスイッチ素子を周期的にオフ状態にする。
特開２００４−２０８４８８号公報（第６−１７頁、図１−３） 2. Description of the Related Art Conventionally, a power generation control device that suppresses an initial excitation current before starting an engine is known (for example, see Patent Document 1). Specifically, this power generation control device includes a switching element that controls the amount of excitation current to be supplied. When the adjustment voltage is higher than the adjustment voltage, the excitation current is passed. When it is low, the exciting current is cut off, and before starting the engine, the switch element is periodically turned off for the purpose of suppressing the exciting current consumption.
JP 2004-208488 A (page 6-17, FIG. 1-3)

ところで、特許文献１に開示された発電制御装置では、エンジン始動前において調整電圧が発電電圧よりも低い場合にはスイッチ手段が常にオフ状態となるため、発電開始に必要な初期励磁電流が供給されないことになる。このため、エンジンが始動し、所定回転数以上になっても車両用発電機が発電を開始せず、車両用発電機に断線等の異常がないのに発電停止警報を出力し続けるおそれがあるという問題があった。   By the way, in the power generation control device disclosed in Patent Document 1, when the adjustment voltage is lower than the power generation voltage before starting the engine, the switch means is always turned off, so that the initial excitation current necessary for starting power generation is not supplied. It will be. For this reason, even if the engine is started and the engine speed exceeds the predetermined value, the vehicular generator does not start generating power, and there is a risk that the power generator stop alarm will continue to be output even though there is no abnormality such as disconnection in the vehicular generator. There was a problem.

本発明は、このような点に鑑みて創作されたものであり、その目的は、エンジン始動とともに確実に車両用発電機が発電を開始し、発電停止警告の出力を停止させることができる車両用発電制御装置を提供することにある。   The present invention has been created in view of the above points, and an object of the present invention is for a vehicle in which a generator for a vehicle can reliably start power generation when the engine is started and the output of a power generation stop warning can be stopped. The object is to provide a power generation control device.

上述した課題を解決するために、本発明の車両用発電制御装置は、車両用発電機が発電停止状態にあるか否かを検出する発電検出手段と、発電検出手段によって車両用発電機が発電停止状態にあることを検出したときに警報信号を出力する発電停止警報手段と、車両用発電機の回転数が所定回転数以下であって、発電電圧が調整電圧よりも高いときに、車両用発電機の励磁巻線に初期励磁電流を供給する初期励磁手段とを備えている。これにより、車両用発電機の発電電圧が調整電圧よりも高い場合であっても、回転数が所定回転数以下のときには初期励磁電流を流すことができるため、エンジン始動とともに確実に車両用発電機に発電を開始させ、発電停止警報の出力を停止させることができる。このため、車両用発電機に断線等の異常がないのに発電停止警報を出力し続けることもなくなる。   In order to solve the above-described problems, a vehicle power generation control device according to the present invention includes a power generation detection unit that detects whether or not the vehicle power generator is in a power generation stop state, and the vehicle generator generates power by the power generation detection unit. Power generation stop alarm means for outputting an alarm signal when it is detected that the vehicle is stopped, and the vehicle generator when the rotation speed of the vehicle generator is equal to or lower than a predetermined rotation speed and the generated voltage is higher than the adjustment voltage. Initial excitation means for supplying an initial excitation current to the excitation winding of the generator. As a result, even when the power generation voltage of the vehicle generator is higher than the adjustment voltage, the initial excitation current can flow when the rotational speed is equal to or lower than the predetermined rotational speed. Power generation can be started and the output of the power generation stop alarm can be stopped. For this reason, even if there is no abnormality such as disconnection in the vehicular generator, the generation stop alarm is not continuously output.

また、本発明の車両用発電制御装置は、車両用発電機が発電停止状態にあるか否かを検出する発電検出手段と、発電検出手段によって車両用発電機が発電停止状態にあることを検出したときに警報信号を出力する発電停止警報手段と、外部制御装置から送られてくる発電停止信号に応じて車両用発電機を発電停止状態に制御する発電停止制御手段と、車両用発電機の回転数が所定回転数以下であって、外部制御装置から発電停止信号が送られてきたときに、車両用発電機の励磁巻線に初期励磁電流を供給する初期励磁手段とを備えている。これにより、エンジン停止時等に外部制御装置から発電停止信号が出力された場合であっても、回転数が所定回転数以下のときには初期励磁電流を流すことができるため、エンジン始動とともに確実に車両用発電機に発電を開始させ、発電停止警報の出力を停止させることができる。このため、車両用発電機に断線等の異常がないのに発電停止警報を出力し続けることもなくなる。   Further, the vehicle power generation control device of the present invention detects whether or not the vehicle generator is in a power generation stop state by using the power generation detection means for detecting whether or not the vehicle power generator is in a power generation stop state. A power generation stop alarm means for outputting a warning signal when the power is generated, a power generation stop control means for controlling the vehicle generator to a power generation stop state in response to a power generation stop signal sent from an external control device, and a vehicle generator And an initial excitation means for supplying an initial excitation current to the excitation winding of the vehicular generator when the rotation speed is equal to or lower than a predetermined rotation speed and a power generation stop signal is sent from the external control device. Thus, even when a power generation stop signal is output from the external control device when the engine is stopped, the initial excitation current can flow when the rotational speed is equal to or lower than the predetermined rotational speed. The generator can start power generation, and the output of the power generation stop alarm can be stopped. For this reason, even if there is no abnormality such as disconnection in the vehicular generator, the generation stop alarm is not continuously output.

また、上述した初期励磁手段は、車両用発電機の発電電圧が調整電圧よりも高い所定値を超えたときに、初期励磁電流の供給を停止することが望ましい。具体的には、上述した所定値は、車両用発電機に接続されたバッテリの開放状態での端子電圧であることが望ましい。あるいは、調整電圧を変更する調整電圧変更手段をさらに備え、上述した所定値は、調整電圧変更手段によって変更可能な調整電圧の最大値であることが望ましい。これにより、車両用発電機の回転数を検出する回路に不具合が生じて回転検出を行うことができない場合であっても、発電電圧の上昇に伴って初期励磁電流の供給を停止させることができるため、発電電圧の過度の上昇を防止することができる。   Further, it is desirable that the above-described initial excitation means stop supplying the initial excitation current when the generated voltage of the vehicle generator exceeds a predetermined value higher than the adjustment voltage. Specifically, it is desirable that the predetermined value described above is a terminal voltage when the battery connected to the vehicle generator is open. Alternatively, it is preferable that an adjustment voltage changing unit that changes the adjustment voltage is further provided, and the predetermined value described above is a maximum value of the adjustment voltage that can be changed by the adjustment voltage changing unit. As a result, even if the circuit for detecting the rotational speed of the vehicular generator detects a malfunction and cannot detect the rotation, the supply of the initial excitation current can be stopped as the generated voltage increases. Therefore, an excessive increase in the generated voltage can be prevented.

以下、本発明を適用した一実施形態の車両用発電制御装置について、図面を参照しながら説明する。図１は、本発明を適用した一実施形態の車両用発電制御装置の構成を示す図であり、あわせてこの車両用発電制御装置と車両用発電機やバッテリ、電気負荷、ＥＣＵとの接続状態が示されている。   Hereinafter, a vehicle power generation control device according to an embodiment to which the present invention is applied will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of a vehicle power generation control device according to an embodiment to which the present invention is applied. In addition, a connection state between the vehicle power generation control device and a vehicle power generator, a battery, an electric load, and an ECU. It is shown.

図１において、車両用発電制御装置２は、車両用発電機１の出力端子（Ｂ端子）の電圧が所定の調整電圧（例えば１４Ｖ）になるように制御するためのものである。また、車両用発電制御装置２は、Ｂ端子以外に、通信端子（Ｃ端子）とグランド端子（Ｅ端子）を有している。Ｂ端子は、所定の充電線を介してバッテリ３や各種の電気負荷４に接続されている。Ｃ端子は、外部制御装置としてのＥＣＵ５に接続されている。Ｅ端子は、車両用発電機１のフレームに接続されている。なお、図１では、車両用発電制御装置２は、車両用発電機１と並行して図示したが、実際には車両用発電機１に内蔵されている。また、Ｂ端子とＥ端子は、車両用発電機１と車両用発電制御装置２の両方で共用されている。   In FIG. 1, the vehicle power generation control device 2 is for controlling the voltage of the output terminal (B terminal) of the vehicle generator 1 to be a predetermined adjustment voltage (for example, 14 V). In addition to the B terminal, the vehicle power generation control device 2 has a communication terminal (C terminal) and a ground terminal (E terminal). The B terminal is connected to the battery 3 and various electric loads 4 via a predetermined charging line. The C terminal is connected to the ECU 5 as an external control device. The E terminal is connected to the frame of the vehicle generator 1. In FIG. 1, the vehicle power generation control device 2 is illustrated in parallel with the vehicle generator 1, but is actually built in the vehicle generator 1. Further, the B terminal and the E terminal are shared by both the vehicle generator 1 and the vehicle power generation control device 2.

車両用発電機１は、固定子に含まれる３相の固定子巻線３１と、固定子巻線３１の３相出力を全波整流するために設けられた整流回路３２と、回転子に含まれる励磁巻線３３とを含んで構成されている。この車両用発電機１の出力電圧の制御は、励磁巻線３３に対する通電を車両用発電制御装置２によって適宜断続制御することにより行われる。   The vehicle generator 1 includes a three-phase stator winding 31 included in the stator, a rectifier circuit 32 provided for full-wave rectification of the three-phase output of the stator winding 31, and a rotor. The excitation winding 33 is configured. The control of the output voltage of the vehicular generator 1 is performed by appropriately intermittently controlling the energization of the excitation winding 33 by the vehicular power generation control device 2.

次に、車両用発電制御装置２の詳細構成および動作について説明する。図１に示すように、車両用発電制御装置２は、発電電圧検出回路１０、回転検出回路１１、切替回路１２、発電検出回路１３、初期励磁制御信号生成回路１４、電圧制御信号生成回路１５、調整電圧生成回路１６、電圧比較器１７、ＮチャネルＭＯＳ−ＦＥＴ１８、環流ダイオード１９、通信制御回路２０を備えている。   Next, a detailed configuration and operation of the vehicle power generation control device 2 will be described. As shown in FIG. 1, the vehicle power generation control device 2 includes a power generation voltage detection circuit 10, a rotation detection circuit 11, a switching circuit 12, a power generation detection circuit 13, an initial excitation control signal generation circuit 14, a voltage control signal generation circuit 15, An adjustment voltage generation circuit 16, a voltage comparator 17, an N-channel MOS-FET 18, a freewheeling diode 19, and a communication control circuit 20 are provided.

発電電圧検出回路１０は、車両用発電機１の発電電圧（Ｂ端子電圧）を検出する。例えば、発電電圧検出回路１０は抵抗を組み合わせた分圧回路で構成されており、発電電圧に比例する分圧電圧を検出電圧として出力する。   The generated voltage detection circuit 10 detects the generated voltage (B terminal voltage) of the vehicle generator 1. For example, the generated voltage detection circuit 10 is configured by a voltage dividing circuit that combines resistors, and outputs a divided voltage that is proportional to the generated voltage as a detected voltage.

回転検出回路１１は、固定子巻線３１のいずれかの相に現れる相電圧を監視することにより、車両用発電機１の回転数を検出し、検出した回転数に対応する電圧を出力する。切替回路１２は、発電電圧検出回路１０および回転検出回路１１のそれぞれの検出結果に基づいて、初期励磁制御信号生成回路１４から出力される初期励磁制御信号あるいは電圧制御信号生成回路１５から出力される電圧制御信号のいずれかを選択してＭＯＳ−ＦＥＴ１８のゲートに入力する。   The rotation detection circuit 11 monitors the phase voltage appearing in any phase of the stator winding 31 to detect the rotation speed of the vehicle generator 1 and outputs a voltage corresponding to the detected rotation speed. The switching circuit 12 is output from the initial excitation control signal or voltage control signal generation circuit 15 output from the initial excitation control signal generation circuit 14 based on the detection results of the generated voltage detection circuit 10 and the rotation detection circuit 11. One of the voltage control signals is selected and input to the gate of the MOS-FET 18.

発電検出回路１３は、車両用発電機１の発電状態、具体的には車両用発電機１が発電停止状態にあるか否かを検出する。例えば、この検出は、固定子巻線３１のいずれかの相に現れる相電圧（波高値および周波数の少なくとも一方）を監視することにより行われる。車両用発電機１が発電停止状態にあることが検出された場合にはその旨が通信制御回路２０に通知され、通信制御装置２０からＥＣＵ５に向けて発電停止警報信号が出力される。   The power generation detection circuit 13 detects the power generation state of the vehicle generator 1, specifically, whether or not the vehicle generator 1 is in a power generation stop state. For example, this detection is performed by monitoring a phase voltage (at least one of a peak value and a frequency) appearing in any phase of the stator winding 31. When it is detected that the vehicular generator 1 is in the power generation stop state, the communication control circuit 20 is notified to that effect, and a power generation stop alarm signal is output from the communication control device 20 to the ECU 5.

初期励磁制御信号生成回路１４は、初期励磁制御信号を生成する。この初期励磁制御信号としては、単純なハイレベル固定の信号や数１０％のオンデューティ（例えば１５％）を有する一定周期の矩形波を用いることが考えられる。電圧制御信号生成回路１５は、電圧制御信号を生成する。この電圧制御信号としては、単純なハイレベルまたはローレベル固定の信号や所定のオンデューティを有する一定周期の矩形波を用いることが考えられる。また、エンジン(図示せず）のアイドル時に大きな電気負荷４が接続されたときに励磁電流の急激な増加を抑制する徐励制御を行う場合には、一定周期の矩形波のオンデューティを徐々に増加させた電圧制御信号が生成される。なお、この場合には、回転検出回路１１の出力に基づいてアイドル時であるか否かの判定を行う必要がある。   The initial excitation control signal generation circuit 14 generates an initial excitation control signal. As this initial excitation control signal, it is conceivable to use a simple high-level fixed signal or a rectangular wave having a fixed period and having an on-duty of several tens of percent (for example, 15%). The voltage control signal generation circuit 15 generates a voltage control signal. As this voltage control signal, it is conceivable to use a simple high level or low level fixed signal or a rectangular wave with a predetermined cycle having a predetermined on-duty. In addition, when performing slow excitation control that suppresses a sudden increase in excitation current when a large electrical load 4 is connected when the engine (not shown) is idle, the on-duty of a rectangular wave with a constant period is gradually increased. An increased voltage control signal is generated. In this case, it is necessary to determine whether or not the engine is idling based on the output of the rotation detection circuit 11.

調整電圧生成回路１６は、調整電圧を生成する。この調整電圧は固定でもよいが、本実施形態では、ＥＣＵ５から送られてくる調整電圧設定信号を通信制御回路２０で受信すると、この調整電圧設定信号によって指定された調整電圧が調整電圧生成回路１６によって生成される。   The adjustment voltage generation circuit 16 generates an adjustment voltage. Although this adjustment voltage may be fixed, in this embodiment, when the communication control circuit 20 receives the adjustment voltage setting signal sent from the ECU 5, the adjustment voltage specified by the adjustment voltage setting signal is changed to the adjustment voltage generation circuit 16. Generated by.

電圧比較器１７は、発電電圧検出回路１０によって検出された発電電圧と、調整電圧生成回路１６によって生成された調整電圧とを比較し、発電電圧の方が低いときにハイレベルの信号を、反対に高いときにローレベルの信号を出力する。電圧比較器１７の出力信号は電圧制御信号生成回路１５に入力される。   The voltage comparator 17 compares the power generation voltage detected by the power generation voltage detection circuit 10 with the adjustment voltage generated by the adjustment voltage generation circuit 16, and reverses the high level signal when the power generation voltage is lower. When the signal is high, a low level signal is output. The output signal of the voltage comparator 17 is input to the voltage control signal generation circuit 15.

ＭＯＳ−ＦＥＴ１８は、励磁巻線３３に直列に接続されており、オン状態のときに励磁巻線３３に励磁電流が流れる。環流ダイオード１９は、励磁巻線３３に並列に接続されており、ＭＯＳ−ＦＥＴ１８がオフ状態のときに励磁電流を環流させる。   The MOS-FET 18 is connected in series to the excitation winding 33, and an excitation current flows through the excitation winding 33 when the MOS-FET 18 is in an on state. The freewheeling diode 19 is connected in parallel to the exciting winding 33 and recirculates the exciting current when the MOS-FET 18 is in the off state.

上述した発電検出回路１３が発電検出手段に、発電検出回路１３、通信制御回路２０が発電停止警報手段に、回転検出回路１１、切替回路１２、初期励磁制御信号生成回路１４、ＭＯＳ−ＦＥＴ１８が初期励磁手段に、調整電圧生成回路１６、通信制御回路２０が調整電圧変更手段にそれぞれ対応する。   The power generation detection circuit 13 described above is the power generation detection means, the power generation detection circuit 13, the communication control circuit 20 is the power generation stop alarm means, the rotation detection circuit 11, the switching circuit 12, the initial excitation control signal generation circuit 14, and the MOS-FET 18 are initial. The adjustment voltage generating circuit 16 and the communication control circuit 20 correspond to the excitation voltage changing means, respectively.

本実施形態の車両用発電制御装置２はこのような構成を有しており、次にその制御動作を説明する。図２は、車両用発電制御装置２の動作手順を示す流れ図であり、主に切替回路１２による制御信号の切替動作に対応する動作手順が示されている。   The vehicle power generation control device 2 of the present embodiment has such a configuration, and the control operation will be described next. FIG. 2 is a flowchart showing an operation procedure of the vehicle power generation control device 2, and mainly shows an operation procedure corresponding to a control signal switching operation by the switching circuit 12.

イグニッションスイッチ（図示せず）がオンされて、あるいは、ＥＣＵ５から起動信号が送られてくると車両用発電制御装置２が動作を開始し、切替回路１２は、初期励磁制御信号生成回路１４によって生成される初期励磁制御信号を選択して出力する（ステップ１００）。この初期励磁制御信号はＭＯＳ−ＦＥＴ１８に入力され、励磁巻線３３に初期励磁電流が流れる。   When an ignition switch (not shown) is turned on or an activation signal is sent from the ECU 5, the vehicle power generation control device 2 starts operating, and the switching circuit 12 is generated by the initial excitation control signal generation circuit 14. The initial excitation control signal to be selected is selected and output (step 100). This initial excitation control signal is input to the MOS-FET 18, and an initial excitation current flows through the excitation winding 33.

上記の動作（初期励磁動作）と並行して回転検出回路１１による車両用発電機１の回転数検出が行われており、切替回路１２は、車両用発電機１の回転数が所定回転数を超えたか否かを判定する（ステップ１０１）。所定回転数を超えた場合には肯定判断が行われ、切替回路１２は、電圧制御信号生成回路１５によって生成される電圧制御信号を選択して出力する（ステップ１０２）。この電圧制御信号はＭＯＳ−ＦＥＴ１８に入力され、励磁巻線３３に流れる励磁電流を増減させることにより、発電電圧が調整電圧に一致するように制御される。   In parallel with the above operation (initial excitation operation), the rotation detection circuit 11 detects the rotation speed of the vehicle generator 1 and the switching circuit 12 sets the rotation speed of the vehicle generator 1 to a predetermined rotation speed. It is determined whether it has been exceeded (step 101). If the predetermined number of rotations is exceeded, an affirmative determination is made, and the switching circuit 12 selects and outputs the voltage control signal generated by the voltage control signal generation circuit 15 (step 102). This voltage control signal is input to the MOS-FET 18 and the generated voltage is controlled to match the adjusted voltage by increasing or decreasing the exciting current flowing in the exciting winding 33.

一方、車両用発電機１の回転数が所定回転数以下の場合にはステップ１０１の判定において否定判断が行われ、次に、切替回路１２は、車両用発電機１の発電電圧が所定値以上か否かを判定する（ステップ１０３）。この判定に用いられる「所定値」は、調整電圧よりも高い値であって、例えば、バッテリ３の開放状態での端子電圧を用いる場合や、変更可能な調整電圧の最大値を用いる場合などが考えられる。発電電圧が所定値よりも低い場合には否定判断が行われ、ステップ１００に戻って切替回路１２による初期励磁制御信号の出力が継続される。また、車両用発電機１の発電電圧が所定値以上の場合にはステップ１０３の判定において肯定判断が行われ、切替回路１２は、電圧制御信号生成回路１５によって生成される電圧制御信号を選択して出力する（ステップ１０４）。   On the other hand, when the rotational speed of the vehicle generator 1 is equal to or lower than the predetermined rotational speed, a negative determination is made in the determination of step 101, and then the switching circuit 12 determines that the power generation voltage of the vehicle generator 1 is equal to or higher than a predetermined value. Whether or not (step 103). The “predetermined value” used for this determination is a value higher than the adjustment voltage. For example, the terminal voltage when the battery 3 is open or the maximum value of the adjustment voltage that can be changed is used. Conceivable. If the generated voltage is lower than the predetermined value, a negative determination is made, the process returns to step 100, and the output of the initial excitation control signal by the switching circuit 12 is continued. When the generated voltage of the vehicular generator 1 is greater than or equal to a predetermined value, an affirmative determination is made in the determination of step 103, and the switching circuit 12 selects the voltage control signal generated by the voltage control signal generation circuit 15. (Step 104).

図３は、切替回路１２による制御信号の切替状態を示す図である。例えば、ステップ１０１における判定で用いられる所定回転数が８００ｒｐｍに設定されている場合が示されている。車両用発電機１の回転数が８００ｒｐｍ以下の場合には、発電電圧が調整電圧を超えた場合であっても所定値を超えない限り（図３（ｂ））、初期励磁電流が励磁巻線３３に供給される。また、車両用発電機１の回転数が８００ｒｐｍ以上になると、発電電圧が調整電圧以下か否かによって発電制御信号の供給（図３（ｄ））と停止（図３（ｅ））が適宜切り替えられる。   FIG. 3 is a diagram illustrating a switching state of the control signal by the switching circuit 12. For example, the case where the predetermined number of rotations used in the determination in step 101 is set to 800 rpm is shown. When the rotational speed of the vehicle generator 1 is 800 rpm or less, even if the generated voltage exceeds the adjustment voltage, the initial excitation current is the excitation winding as long as it does not exceed the predetermined value (FIG. 3B). 33. When the rotational speed of the vehicular generator 1 is 800 rpm or higher, the generation control signal supply (FIG. 3 (d)) and the stop (FIG. 3 (e)) are switched appropriately depending on whether the generated voltage is lower than the adjustment voltage. It is done.

図４は、従来の車両用発電制御装置で行われる制御信号の切替状態を示す図である。図４に示すように、従来は、８００ｒｐｍ以下の場合も８００ｒｐｍ以上の場合と同様に、発電電圧が調整電圧以上であると、励磁電流が遮断されてるため、励磁巻線に初期励磁電流を流すことができず、車両用発電機１が発電を開始することができない。   FIG. 4 is a diagram illustrating a switching state of control signals performed in a conventional vehicle power generation control device. As shown in FIG. 4, in the conventional case, when the generated voltage is equal to or higher than the adjustment voltage, the excitation current is cut off when the generated voltage is equal to or higher than 800 rpm. The vehicle generator 1 cannot start power generation.

このように、本実施形態の車両用発電制御装置２では、車両用発電機１の発電電圧が調整電圧よりも高い場合であっても、回転数が所定回転数以下のときには励磁巻線３３に初期励磁電流を流すことができるため、エンジン始動とともに確実に車両用発電機１に発電を開始させ、発電停止警報の出力を停止させることができる。このため、車両用発電機１に断線等の異常がないのに発電停止警報を出力し続けることもなくなる。   Thus, in the vehicular power generation control device 2 of the present embodiment, even when the power generation voltage of the vehicular generator 1 is higher than the adjustment voltage, when the rotation speed is equal to or lower than the predetermined rotation speed, the excitation winding 33 is applied. Since the initial excitation current can be passed, the vehicle generator 1 can be reliably started to generate power when the engine is started, and the output of the power generation stop alarm can be stopped. For this reason, even if there is no abnormality such as disconnection in the vehicular generator 1, the power generation stop alarm is not continuously output.

特に、車両用発電機１の発電電圧が調整電圧よりも高い所定値を超えたときに、初期励磁電流の供給を停止している。具体的には、上述した所定値を、車両用発電機１に接続されたバッテリ３の開放状態での端子電圧や、変更可能な調整電圧の最大値に設定している。これにより、車両用発電機１の回転数を検出する回転検出回路１１に不具合が生じて回転検出を行うことができない場合であっても、発電電圧の上昇に伴って初期励磁電流の供給を停止させることができるため、発電電圧の過度の上昇（過電圧）を防止することができる。   In particular, when the power generation voltage of the vehicle generator 1 exceeds a predetermined value higher than the adjustment voltage, the supply of the initial excitation current is stopped. Specifically, the predetermined value described above is set to the terminal voltage when the battery 3 connected to the vehicle generator 1 is in the open state or the maximum value of the adjustable voltage that can be changed. As a result, even if a failure occurs in the rotation detection circuit 11 that detects the rotation speed of the vehicle generator 1 and rotation cannot be detected, the supply of the initial excitation current is stopped as the generated voltage increases. Therefore, an excessive increase (overvoltage) of the generated voltage can be prevented.

図５は、本発明を適用した他の実施形態の車両用発電制御装置の構成を示す図である。この実施形態の車両用発電制御装置２Ａは、図１に示した車両用発電制御装置２に対して、発電停止制御信号生成回路２１を追加するとともに、電圧制御信号生成回路１５を電圧制御信号生成回路１５Ａに置き換えた構成を有している。以下では主にこれらの相違点に着目して車両用発電制御装置２Ａの動作を説明する。   FIG. 5 is a diagram showing a configuration of a vehicle power generation control device according to another embodiment to which the present invention is applied. The vehicle power generation control device 2A of this embodiment adds a power generation stop control signal generation circuit 21 to the vehicle power generation control device 2 shown in FIG. 1 and generates a voltage control signal generation circuit 15 from the voltage control signal generation circuit 15. The circuit 15A is replaced. Hereinafter, the operation of the vehicle power generation control device 2A will be described mainly focusing on these differences.

この実施形態の車両用発電制御装置２Ａでは、ＥＣＵ５から発電の停止を指示する発電停止信号を通信制御回路２０で受信すると、発電停止制御信号生成回路２１は、発電停止制御信号を生成する。電圧制御信号生成回路１５Ａは、発電停止制御信号生成回路２１から発電停止制御信号が入力されていないときには、電圧比較器１７の出力信号に基づいて通常の発電動作に必要な電圧制御信号（この場合には図１に示す電圧制御信号生成回路１５によって生成される電圧制御信号と同じになる）を生成し、発電停止制御信号が入力されると、発電停止に必要な電圧制御信号（例えば、ローレベルの信号）を生成する。この発電停止に必要な電圧制御信号が切替回路１２を介してＭＯＳ−ＦＥＴ１８に入力されると、励磁巻線３３に対する励磁電流の供給が停止され、発電停止状態になる。上述した発電停止制御信号生成回路２１が発電停止制御手段に対応する。   In the vehicle power generation control device 2A of this embodiment, when the communication control circuit 20 receives a power generation stop signal instructing the power generation stop from the ECU 5, the power generation stop control signal generation circuit 21 generates a power generation stop control signal. When the power generation stop control signal is not input from the power generation stop control signal generation circuit 21, the voltage control signal generation circuit 15 </ b> A is a voltage control signal (in this case) necessary for a normal power generation operation based on the output signal of the voltage comparator 17. 1 is the same as the voltage control signal generated by the voltage control signal generation circuit 15 shown in FIG. 1, and when the power generation stop control signal is input, a voltage control signal (for example, low level) required for power generation stop is input. Level signal). When the voltage control signal necessary for stopping the power generation is input to the MOS-FET 18 via the switching circuit 12, the supply of the excitation current to the excitation winding 33 is stopped and the power generation is stopped. The power generation stop control signal generation circuit 21 described above corresponds to the power generation stop control means.

このように、本実施形態の車両用発電制御装置２Ａでは、エンジン停止時等にＥＣＵ５から発電停止信号が出力された場合であっても、切替回路１２を介することによって回転数が所定回転数以下のときには励磁巻線３３に初期励磁電流を流すことができるため、エンジン始動とともに確実に車両用発電機１に発電を開始させ、発電停止警報の出力を停止させることができる。このため、車両用発電機１に断線等の異常がないのに発電停止警報を出力し続けることもなくなる。   As described above, in the vehicle power generation control device 2A of the present embodiment, even when the power generation stop signal is output from the ECU 5 when the engine is stopped, the rotational speed is equal to or lower than the predetermined rotational speed through the switching circuit 12. In this case, since the initial excitation current can be supplied to the excitation winding 33, the vehicle generator 1 can be surely started to generate power when the engine is started, and the output of the power generation stop alarm can be stopped. For this reason, even if there is no abnormality such as disconnection in the vehicular generator 1, the power generation stop alarm is not continuously output.

本発明を適用した一実施形態の車両用発電制御装置の構成を示す図である。It is a figure which shows the structure of the electric power generation control apparatus for vehicles of one Embodiment to which this invention is applied. 車両用発電制御装置の動作手順を示す流れ図である。It is a flowchart which shows the operation | movement procedure of the electric power generation control apparatus for vehicles. 切替回路による制御信号の切替状態を示す図である。It is a figure which shows the switching state of the control signal by a switching circuit. 従来の車両用発電制御装置で行われる制御信号の切替状態を示す図である。It is a figure which shows the switching state of the control signal performed with the conventional vehicle electric power generation control apparatus. 本発明を適用した他の実施形態の車両用発電制御装置の構成を示す図である。It is a figure which shows the structure of the vehicle electric power generation control apparatus of other embodiment to which this invention is applied.

符号の説明Explanation of symbols

１ 車両用発電機
２、２Ａ 車両用発電制御装置
３ バッテリ
４ 電気負荷
５ ＥＣＵ
１０ 発電電圧検出回路
１１ 回転検出回路
１２ 切替回路
１３ 発電検出回路
１４ 初期励磁制御信号生成回路
１５、１５Ａ 電圧制御信号生成回路
１６ 調整電圧生成回路
１７ 電圧比較器
１８ ＮチャネルＭＯＳ−ＦＥＴ
１９ 環流ダイオード
２０ 通信制御回路
２１ 発電停止制御信号生成回路
３１ 固定子巻線
３２ 整流回路
３３ 励磁巻線 DESCRIPTION OF SYMBOLS 1 Vehicle generator 2, 2A Vehicle power generation control device 3 Battery 4 Electric load 5 ECU
DESCRIPTION OF SYMBOLS 10 Generation voltage detection circuit 11 Rotation detection circuit 12 Switching circuit 13 Generation detection circuit 14 Initial excitation control signal generation circuit 15, 15A Voltage control signal generation circuit 16 Adjustment voltage generation circuit 17 Voltage comparator 18 N channel MOS-FET
19 Free-wheeling diode 20 Communication control circuit 21 Power generation stop control signal generation circuit 31 Stator winding 32 Rectifier circuit 33 Excitation winding

Claims (5)

車両用発電機が発電停止状態にあるか否かを検出する発電検出手段と、
前記発電検出手段によって前記車両用発電機が発電停止状態にあることを検出したときに警報信号を出力する発電停止警報手段と、
前記車両用発電機の回転数が所定回転数以下であって、発電電圧が調整電圧よりも高いときに、前記車両用発電機の励磁巻線に初期励磁電流を供給する初期励磁手段と、
を備えることを特徴とする車両用発電制御装置。 Power generation detection means for detecting whether or not the vehicle generator is in a power generation stop state;
A power generation stop alarm means for outputting an alarm signal when it is detected by the power generation detection means that the vehicle generator is in a power generation stop state;
An initial excitation means for supplying an initial excitation current to an excitation winding of the vehicle generator when the rotation speed of the vehicle generator is equal to or lower than a predetermined rotation speed and the generated voltage is higher than an adjustment voltage;
A vehicle power generation control device comprising: 車両用発電機が発電停止状態にあるか否かを検出する発電検出手段と、
前記発電検出手段によって前記車両用発電機が発電停止状態にあることを検出したときに警報信号を出力する発電停止警報手段と、
外部制御装置から送られてくる発電停止信号に応じて前記車両用発電機を発電停止状態に制御する発電停止制御手段と、
前記車両用発電機の回転数が所定回転数以下であって、前記外部制御装置から前記発電停止信号が送られてきたときに、前記車両用発電機の励磁巻線に初期励磁電流を供給する初期励磁手段と、
を備えることを特徴とする車両用発電制御装置。 Power generation detection means for detecting whether or not the vehicle generator is in a power generation stop state;
A power generation stop alarm means for outputting an alarm signal when it is detected by the power generation detection means that the vehicle generator is in a power generation stop state;
Power generation stop control means for controlling the vehicle generator to a power generation stop state in response to a power generation stop signal sent from an external control device;
When the rotation speed of the vehicle generator is equal to or lower than a predetermined rotation speed and the power generation stop signal is sent from the external control device, an initial excitation current is supplied to the excitation winding of the vehicle generator. Initial excitation means;
A vehicle power generation control device comprising: 請求項１または２において、
前記初期励磁手段は、前記車両用発電機の発電電圧が前記調整電圧よりも高い所定値を超えたときに、前記初期励磁電流の供給を停止することを特徴とする車両用発電制御装置。 In claim 1 or 2,
The initial excitation means stops the supply of the initial excitation current when the generated voltage of the vehicular generator exceeds a predetermined value higher than the adjustment voltage. 請求項３において、
前記所定値は、前記車両用発電機に接続されたバッテリの開放状態での端子電圧であることを特徴とする車両用発電制御装置。 In claim 3,
The vehicle power generation control device according to claim 1, wherein the predetermined value is a terminal voltage in an open state of a battery connected to the vehicle generator. 請求項３において、
前記調整電圧を変更する調整電圧変更手段をさらに備え、
前記所定値は、前記調整電圧変更手段によって変更可能な調整電圧の最大値であることを特徴とする車両用発電制御装置。 In claim 3,
It further comprises adjustment voltage changing means for changing the adjustment voltage,
The vehicle power generation control device according to claim 1, wherein the predetermined value is a maximum value of an adjustment voltage that can be changed by the adjustment voltage changing means.
JP2007266516A 2007-10-12 2007-10-12 Vehicle power generation control device Expired - Fee Related JP4548469B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2007266516A JP4548469B2 (en) 2007-10-12 2007-10-12 Vehicle power generation control device
DE200810051078 DE102008051078A1 (en) 2007-10-12 2008-10-09 Power controlling device for vehicle e.g. lorry, on-board power generator, has excitation device supplying current of winding in generator when frequency of generator is smaller and power generation voltage is higher than reference voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007266516A JP4548469B2 (en) 2007-10-12 2007-10-12 Vehicle power generation control device

Publications (2)

Publication Number Publication Date
JP2009100488A true JP2009100488A (en) 2009-05-07
JP4548469B2 JP4548469B2 (en) 2010-09-22

Family

ID=40435735

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007266516A Expired - Fee Related JP4548469B2 (en) 2007-10-12 2007-10-12 Vehicle power generation control device

Country Status (2)

Country Link
JP (1) JP4548469B2 (en)
DE (1) DE102008051078A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104579062A (en) * 2014-12-08 2015-04-29 武汉科创源科技有限公司 Low-voltage generator black start excitation device
US10461677B2 (en) 2017-06-28 2019-10-29 Mitsubishi Electric Corporation Vehicle-power-generator control apparatus and control method thereof
CN112152526A (en) * 2020-09-27 2020-12-29 张明芬 Pre-excitation current rotating speed response energy-saving control method for intelligent automobile generator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9219294B2 (en) 2012-08-22 2015-12-22 Eric D. Albsmeier Power management system that changes the operating conditions of a battery charger
US9331498B2 (en) 2012-09-07 2016-05-03 Kohler Co. Power generation system that provides efficient battery charger selection
US8829855B2 (en) 2012-09-26 2014-09-09 Kohler Co. Power generation system that optimizes the power provided to start a generator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999053596A1 (en) * 1998-04-09 1999-10-21 Mitsubishi Denki Kabushiki Kaisha Controller for ac generators of vehicles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3997969B2 (en) 2002-12-10 2007-10-24 株式会社デンソー Power generation control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999053596A1 (en) * 1998-04-09 1999-10-21 Mitsubishi Denki Kabushiki Kaisha Controller for ac generators of vehicles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104579062A (en) * 2014-12-08 2015-04-29 武汉科创源科技有限公司 Low-voltage generator black start excitation device
US10461677B2 (en) 2017-06-28 2019-10-29 Mitsubishi Electric Corporation Vehicle-power-generator control apparatus and control method thereof
CN112152526A (en) * 2020-09-27 2020-12-29 张明芬 Pre-excitation current rotating speed response energy-saving control method for intelligent automobile generator
CN112152526B (en) * 2020-09-27 2022-11-29 浙江德宏汽车电子电器股份有限公司 Pre-excitation current rotating speed response energy-saving control method for intelligent automobile generator

Also Published As

Publication number Publication date
DE102008051078A1 (en) 2009-04-16
JP4548469B2 (en) 2010-09-22

Similar Documents

Publication Publication Date Title
JP4561792B2 (en) Vehicle power generation control device
JP4577227B2 (en) Vehicle power generation control device
JP4682901B2 (en) Power generation control system
JP4548469B2 (en) Vehicle power generation control device
JP2007074868A (en) Voltage controller for vehicle
JP4193777B2 (en) Power generation control device and power generation system
JP2008199779A (en) Power generation control device for vehicle
JP2016002797A (en) Vehicle equipment control device and control method
JP2005333686A (en) Power generation system for vehicle
JP2009118576A (en) Power generation control device
JPH0937597A (en) Generator for vehicle
JP5293978B2 (en) Vehicle generator
JP2006238506A (en) Power generation controller
JP5201196B2 (en) Vehicle power generation control device
JP2004208488A (en) Power generation control system
JP2006340599A (en) Control unit of rotary electric machine for vehicles
JP4761370B2 (en) Control device for motor generator for motorcycle
JP5473949B2 (en) Power generator with overvoltage monitoring function
JP4818293B2 (en) Vehicle power generation control device
JP5115539B2 (en) VEHICLE GENERATION CONTROL DEVICE AND VEHICLE GENERATOR CONTROL SYSTEM
JP4577393B2 (en) Vehicle power generation control device
JP4911235B2 (en) Vehicle power generation control device
JP2010088239A (en) Vehicle power generation controller
JPH089567A (en) Output control and output controller of ac generator for vehicle
JP6119531B2 (en) Rotating electric machine for vehicles

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090323

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100609

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100615

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100628

R151 Written notification of patent or utility model registration

Ref document number: 4548469

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130716

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees