JP2009281302A - Electric fan control device - Google Patents

Electric fan control device Download PDF

Info

Publication number
JP2009281302A
JP2009281302A JP2008134932A JP2008134932A JP2009281302A JP 2009281302 A JP2009281302 A JP 2009281302A JP 2008134932 A JP2008134932 A JP 2008134932A JP 2008134932 A JP2008134932 A JP 2008134932A JP 2009281302 A JP2009281302 A JP 2009281302A
Authority
JP
Japan
Prior art keywords
electric motor
control
motor
electric
fan
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
Application number
JP2008134932A
Other languages
Japanese (ja)
Inventor
Hideki Sunaga
英樹 須永
Kaoru Tanaka
馨 田中
Satoshi Kurihara
聡 栗原
Susumu Kurihara
将 栗原
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.)
Marelli Corp
Original Assignee
Calsonic Kansei 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 Calsonic Kansei Corp filed Critical Calsonic Kansei Corp
Priority to JP2008134932A priority Critical patent/JP2009281302A/en
Publication of JP2009281302A publication Critical patent/JP2009281302A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric fan control device capable of preventing rise of a temperature of a circuit board constituting a motor control means when an electric motor is locked and excess current flows to the electric motor. <P>SOLUTION: In the electric fan control 1 equipped with the electric motor 3 for driving a cooling fan 2 and a control unit 4 as the motor control means for controlling pulse width modulation of the electric motor 3 based on temperature information of a cooling medium output from a water temperature sensor 7, the control unit 4 is provided with a current detecting circuit 11 for detecting the current flowing to the electric motor 3, and the control unit 4 repeatedly performs control for restarting supply of the current to the electric motor 3 after prescribed time passes while the excess current equal to the prescribed threshold or more flows to the electric motor 3 after stopping of supply of the current to the electric motor 3 when the current detecting circuit 11 detects that the excess current equal to the prescribed threshold or more is supplied to the electric motor 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、熱交換器内を流れる冷却媒体を冷却する冷却ファンを回転させる電動モータの駆動制御を行う電動ファン制御装置に関する。   The present invention relates to an electric fan control device that performs drive control of an electric motor that rotates a cooling fan that cools a cooling medium flowing in a heat exchanger.

冷却ファンを回転させてラジエータ内を流れる冷却媒体を冷却する車両のエンジン冷却システムとして、従来より、冷却媒体の温度が所定温度以上になると、電動モータをパルス幅変調制御により駆動して冷却ファンを回転させ、冷却媒体の温度を一定に保つような制御を行う電動ファン制御装置が知られている（例えば、特許文献１参照）。
特開平１０−２２２２号公報 Conventionally, as an engine cooling system for a vehicle that rotates a cooling fan to cool a cooling medium flowing in a radiator, when the temperature of the cooling medium exceeds a predetermined temperature, the electric motor is driven by pulse width modulation control. There is known an electric fan control device that performs control to rotate and keep the temperature of a cooling medium constant (see, for example, Patent Document 1).
JP-A-10-2222

ところで、前記冷却ファンに小石や小枝等の異物が挟まってロックされ、これに伴って電動モータがロックされることで駆動不可能な状態になった場合、冷却媒体の温度が所定温度以上になると、電動モータ（冷却ファン）がロック状態にあるので、電動モータに流れる電流が増加して過電流が流れる。電動モータのロックによって電動モータに過電流が流れ続けると、電動ファン制御装置のコントロールユニット（モータ制御手段）を構成する電子部品等が搭載された回路基板の温度が許容温度以上に上昇して破損するおそれがある。   By the way, when the cooling fan is locked with foreign objects such as pebbles and twigs sandwiched between them and the electric motor is locked along with this, when the temperature of the cooling medium exceeds a predetermined temperature Since the electric motor (cooling fan) is in the locked state, the current flowing through the electric motor increases and an overcurrent flows. If overcurrent continues to flow in the electric motor due to the lock of the electric motor, the temperature of the circuit board on which the electronic parts that constitute the control unit (motor control means) of the electric fan control device will rise above the allowable temperature and will be damaged There is a risk.

このため、電動モータに流れる過電流の大きさが所定の閾値に達すると、電動モータの駆動を停止（ＯＦＦ）することが考えられるが、このような制御では、その後、冷却ファンのロック状態が解消された場合に、冷却媒体の温度が所定温度以上になっても電動モータの駆動が停止されているので、冷却ファンが回転されないという不具合が生じる。   For this reason, when the magnitude of the overcurrent flowing through the electric motor reaches a predetermined threshold value, it is conceivable that the driving of the electric motor is stopped (OFF). When the temperature is solved, the drive of the electric motor is stopped even when the temperature of the cooling medium becomes equal to or higher than a predetermined temperature, so that the cooling fan does not rotate.

そこで、従来では、図４に示すように、電動モータ（冷却ファン）がロックして電動モータに流れる過電流の大きさが所定の閾値（過電流閾値）ａに達すると、電動モータの駆動を停止（ＯＦＦ）し、その直後に駆動を開始（ＯＮ）して、電動モータにまだ過電流が流れているか否かを検出するようにしている。このような制御を行うことにより、冷却ファンのロック状態が解消された場合に、冷却媒体の温度が所定温度以上の場合には通常通りに電動モータが駆動され、冷却ファンを回転させることができる。   Therefore, conventionally, as shown in FIG. 4, when the electric motor (cooling fan) is locked and the magnitude of the overcurrent flowing through the electric motor reaches a predetermined threshold (overcurrent threshold) a, the electric motor is driven. Stop (OFF), and immediately after that, drive is started (ON) to detect whether or not an overcurrent is still flowing through the electric motor. By performing such control, when the locked state of the cooling fan is released, the electric motor is driven as usual when the temperature of the cooling medium is equal to or higher than the predetermined temperature, and the cooling fan can be rotated. .

しかしながら、電動モータ（冷却ファン）のロック状態が解消されない場合は、電動モータに流れる過電流が所定の閾値（過電流閾値）ａを超えると電動モータの駆動を停止し、その直後に電動モータの駆動を再開するような動作が繰り返し継続される。このため、電動モータへ過電流が流れる状態が継続されることにより、図５に示すように、時刻ｔで冷却ファン２がロックした後にコントロールユニットを構成する回路基板の温度が時間の経過とともに次第に上昇し、許容温度以上に達して破損するおそれがある。   However, when the lock state of the electric motor (cooling fan) is not resolved, the driving of the electric motor is stopped when the overcurrent flowing through the electric motor exceeds a predetermined threshold (overcurrent threshold) a, and immediately after that, The operation of restarting driving is continued repeatedly. For this reason, by continuing the state where the overcurrent flows to the electric motor, as shown in FIG. 5, the temperature of the circuit board constituting the control unit gradually increases with time after the cooling fan 2 is locked at time t. There is a risk that it will rise and reach an allowable temperature or higher.

そこで、本発明は、電動モータがロックして電動モータに過電流が流れている場合に、モータ制御手段を構成する回路基板の温度上昇を防止することができる電動ファン制御装置を提供することを目的とする。   Therefore, the present invention provides an electric fan control device capable of preventing a temperature rise of a circuit board constituting the motor control means when the electric motor is locked and an overcurrent flows through the electric motor. Objective.

前記目的を達成するために請求項１に係る本発明は、車両用冷却システムにおける熱交換器内を流れる冷却媒体を送風によって冷却する冷却ファンと、前記冷却ファンを駆動する電動モータと、少なくも冷却媒体温度検出センサにより検出された前記冷却媒体の温度情報に基づいて前記電動モータをパルス幅変調制御するモータ制御手段とを備えた電動ファン制御装置において、前記モータ制御手段は、前記電動モータに流れる電流を検出する電流検出手段を有し、前記電流検出手段が前記電動モータに所定の閾値以上の過電流が流れたことを検出した場合に、前記モータ制御手段は、前記電動モータへの通電を停止させた後に、一定時間経過してから前記電動モータへの通電を再開する制御を、前記電動モータに前記所定の閾値以上の過電流が流れる間繰り返して行うことを特徴としている。   In order to achieve the above object, the present invention according to claim 1 includes a cooling fan that cools a cooling medium flowing in a heat exchanger in a vehicle cooling system by blowing air, an electric motor that drives the cooling fan, and at least An electric fan control device comprising: motor control means for performing pulse width modulation control of the electric motor based on temperature information of the cooling medium detected by a cooling medium temperature detection sensor, wherein the motor control means is connected to the electric motor. Current detecting means for detecting a flowing current, and when the current detecting means detects that an overcurrent of a predetermined threshold value or more has flowed to the electric motor, the motor control means supplies power to the electric motor. Control for resuming energization of the electric motor after a certain period of time has elapsed after stopping the operation of the electric motor. It is characterized by repeatedly performing during flow.

本発明に係る電動ファン制御装置によれば、電動モータがロックした場合などに電動モータに所定の閾値以上の過電流が流れると、電動モータへの通電を停止させた後に、一定時間経過してから電動モータへの通電を再開する制御を、電動モータに所定の閾値以上の過電流が流れる間は繰り返して行うことにより、電動モータへの通電が停止されている一定時間の間は、モータ制御手段を構成する回路基板の温度上昇を抑制することができる。これにより、電動モータがロックして過電流が流れた場合でも、モータ制御手段を構成する回路基板の温度上昇が抑えられるので、過熱によるモータ制御手段の回路基板の破損を防止することができる。   According to the electric fan control device of the present invention, when an overcurrent exceeding a predetermined threshold flows in the electric motor when the electric motor is locked, a certain period of time elapses after the energization of the electric motor is stopped. The control for resuming energization from the motor to the electric motor is repeated while an overcurrent exceeding a predetermined threshold flows through the electric motor, so that the motor control is performed for a certain period of time when the energization to the electric motor is stopped. An increase in temperature of the circuit board constituting the means can be suppressed. As a result, even when the electric motor is locked and an overcurrent flows, the temperature rise of the circuit board constituting the motor control means can be suppressed, so that the circuit board of the motor control means can be prevented from being damaged due to overheating.

以下、本発明を図示の実施形態に基づいて説明する。図１は、本発明の実施形態に係る電動ファン制御装置の構成を示す図であり、本実施形態では、本発明に係る電動ファン制御装置を、自動車のエンジン冷却システムにおける電動ファン制御装置に適用した例を示している。   Hereinafter, the present invention will be described based on the illustrated embodiments. FIG. 1 is a diagram showing a configuration of an electric fan control device according to an embodiment of the present invention. In this embodiment, the electric fan control device according to the present invention is applied to an electric fan control device in an engine cooling system of an automobile. An example is shown.

図１に示すように、本実施形態に係る電動ファン制御装置１は、冷却ファン２を回転駆動する電動モータ３と、電動モータ３をパルス幅変調制御（以下、「ＰＷＭ制御」という）するモータ制御手段としてのコントロールユニット４とを備えており、冷却ファン２の前面側（図１の右側）には、エンジン冷却媒体（冷却水）を冷却する熱交換器であるラジエータ５が設置されている。   As shown in FIG. 1, an electric fan control device 1 according to this embodiment includes an electric motor 3 that rotationally drives a cooling fan 2, and a motor that performs pulse width modulation control (hereinafter referred to as “PWM control”) of the electric motor 3. A control unit 4 as a control means is provided, and a radiator 5 which is a heat exchanger for cooling the engine cooling medium (cooling water) is installed on the front side (right side in FIG. 1) of the cooling fan 2. .

コントロールユニット４は、電源である車載のバッテリ６からイグニッション（ＩＧＮ）スイッチ（不図示）を介して電源供給を受けて動作し、電動モータ３へ出力する電圧をＰＷＭ制御するものである。   The control unit 4 operates by receiving power supply from an in-vehicle battery 6 serving as a power source via an ignition (IGN) switch (not shown), and performs PWM control of a voltage output to the electric motor 3.

コントロールユニット４は、水温センサ７から出力される水温信号等に基づいてＰＷＭ制御するためのパルス信号を出力する制御部８と、電動モータ３を駆動するＭＯＳ−ＦＥＴ等の半導体スイッチング素子（不図示）を有し、制御部８から出力される前記パルス信号に応じたデューティ比で前記半導体スイッチング素子を駆動するＰＷＭ駆動・出力回路９と、電動モータ３に流れる電流を検出する電流検出回路１０とを有している。なお、水温センサ７は、ラジエータ５内を流れるエンジン冷却媒体の温度（冷却水温）を検出するセンサである。   The control unit 4 includes a control unit 8 that outputs a pulse signal for PWM control based on a water temperature signal output from the water temperature sensor 7, and a semiconductor switching element (not shown) such as a MOS-FET that drives the electric motor 3. ) And a PWM drive / output circuit 9 for driving the semiconductor switching element with a duty ratio corresponding to the pulse signal output from the control unit 8, and a current detection circuit 10 for detecting a current flowing through the electric motor 3. have. The water temperature sensor 7 is a sensor that detects the temperature of the engine cooling medium flowing through the radiator 5 (cooling water temperature).

次に、前記した電動ファン制御装置１の動作について説明する。   Next, the operation of the electric fan control device 1 will be described.

コントロールユニット４の制御部８は、水温センサ７から出力される水温信号等に基づいてラジエータ５内を流れるエンジン冷却媒体の温度が所定温度以上になったと判断した場合、電動モータ３をＰＷＭ制御するためのパルス信号をＰＷＭ駆動・出力回路９に出力する。ＰＷＭ駆動・出力回路９は、制御部８から出力されるパルス信号に応じたデューティ比で半導体スイッチング素子（不図示）を駆動し、電動モータ３をＰＷＭ制御する。   When the control unit 8 of the control unit 4 determines that the temperature of the engine cooling medium flowing in the radiator 5 has become equal to or higher than a predetermined temperature based on the water temperature signal output from the water temperature sensor 7, the electric motor 3 is PWM-controlled. The pulse signal for output is output to the PWM drive / output circuit 9. The PWM drive / output circuit 9 drives a semiconductor switching element (not shown) with a duty ratio corresponding to the pulse signal output from the control unit 8 and performs PWM control of the electric motor 3.

これにより、電動モータ３は、水温センサ７から出力される水温信号等に基づいて所定の回転速度で駆動され、冷却ファン２の回転による送風によってラジエータ５内を流れるエンジン冷却媒体を冷却する。   Thus, the electric motor 3 is driven at a predetermined rotational speed based on the water temperature signal output from the water temperature sensor 7 and cools the engine cooling medium flowing in the radiator 5 by the air blown by the rotation of the cooling fan 2.

ところで、冷却ファン２に小石や小枝等の異物が挟まってロックされ、これに伴って電動モータ３がロックされることで駆動不可能な状態になった場合においても、エンジン冷却媒体の温度が所定温度以上になると、前記したように電動モータ３がＰＷＭ制御される。しかしながら、この際、電動モータ３（冷却ファン２）がロック状態にあるので電動モータ３に過電流が流れ、コントロールユニット４の制御部８、ＰＷＭ駆動・出力回路９等を構成する電子部品を搭載した回路基板の温度が許容温度以上に上昇して破損するおそれがある。   By the way, even when foreign objects such as pebbles and twigs are sandwiched and locked in the cooling fan 2 and the electric motor 3 is locked along with this, the temperature of the engine cooling medium is predetermined. When the temperature exceeds the temperature, the electric motor 3 is PWM-controlled as described above. However, at this time, since the electric motor 3 (cooling fan 2) is in a locked state, an overcurrent flows through the electric motor 3, and electronic components constituting the control unit 8, the PWM drive / output circuit 9 and the like of the control unit 4 are mounted. There is a risk that the temperature of the damaged circuit board will rise above the allowable temperature and be damaged.

そこで、本発明の実施形態では、電動モータ３（冷却ファン２）のロックによって電動モータ３に所定の閾値以上の過電流が流れていることを電流検出回路１０で検出すると、電流検出回路１０から制御部８に過電流検出信号が出力される。制御部８は、入力される過電流検出信号に基づいて、図２に示すように、電動モータ３に流れる電流が増加して所定の閾値（過電流閾値）ａを超えた過電流が流れていると判断した場合には、制御部８からＰＷＭ駆動・出力回路９に出力するパルス信号を停止させた後、一定時間（例えば、数十秒間）Ｔの間は停止状態を保持する。これにより、この一定時間Ｔの間は、電動モータ３への通電が停止された状態となる。   Therefore, in the embodiment of the present invention, if the current detection circuit 10 detects that an overcurrent exceeding a predetermined threshold value is flowing through the electric motor 3 due to the lock of the electric motor 3 (cooling fan 2), the current detection circuit 10 An overcurrent detection signal is output to the control unit 8. As shown in FIG. 2, the control unit 8 increases the current flowing through the electric motor 3 based on the input overcurrent detection signal, and an overcurrent exceeding a predetermined threshold (overcurrent threshold) a flows. If it is determined that the pulse signal is output from the controller 8 to the PWM drive / output circuit 9, the stop state is maintained for a certain time (for example, several tens of seconds). Thereby, during this fixed time T, it will be in the state by which the electricity supply to the electric motor 3 was stopped.

そして、一定時間（例えば、数十秒間）Ｔが経過後に再起動して、制御部８からＰＷＭ駆動・出力回路９にパルス信号を出力する。その後、電動モータ３（冷却ファン２）のロック状態が解消されてなく、電動モータ３に流れる電流が所定の閾値（過電流閾値）ａを再度超えると、前記同様に制御部８からＰＷＭ駆動・出力回路９に出力するパルス信号を停止させた後、一定時間（例えば、数十秒間）Ｔの間は停止状態を保持する。このような制御を、電動モータ３（冷却ファン２）のロック状態が解消されるまで、即ち、電動モータ３（冷却ファン２）のロックによって電動モータ３に所定の閾値ａを超える過電流が流れている間は繰り返して行う。   Then, after a predetermined time (for example, several tens of seconds) T elapses, the control unit 8 restarts and outputs a pulse signal to the PWM drive / output circuit 9. After that, when the locked state of the electric motor 3 (cooling fan 2) is not released and the current flowing through the electric motor 3 exceeds the predetermined threshold (overcurrent threshold) a again, the controller 8 performs PWM drive / After the pulse signal output to the output circuit 9 is stopped, the stopped state is maintained for a certain time (for example, several tens of seconds) T. Such control is continued until the locked state of the electric motor 3 (cooling fan 2) is released, that is, the electric motor 3 (cooling fan 2) is locked and an overcurrent exceeding a predetermined threshold value a flows in the electric motor 3. Repeat as long as you go.

このように、電動モータ３（冷却ファン２）のロックにより電動モータ３に流れる電流が増加して所定の閾値ａを超えた場合に、電動モータ３への通電を停止させ、一定時間（例えば、数十秒間）Ｔの間停止状態を保持した後に再起動する制御を繰り返すことにより、電動モータ３への通電が停止されている一定時間Ｔの間は、コントロールユニット４を構成する回路基板の温度上昇が抑制される。   In this way, when the electric motor 3 (cooling fan 2) is locked and the current flowing through the electric motor 3 increases and exceeds a predetermined threshold value a, energization of the electric motor 3 is stopped and a certain time (for example, The temperature of the circuit board constituting the control unit 4 is maintained for a certain time T during which the energization of the electric motor 3 is stopped by repeating the control of restarting after holding the stopped state for several tens of seconds). The rise is suppressed.

よって、図３に示すように、時刻ｔで電動モータ３（冷却ファン２）がロックした場合に、時間が経過してもコントロールユニット４を構成する回路基板の温度上昇が抑えられるので、過熱によるコントロールユニット４の回路基板の破損を防止することができる。   Therefore, as shown in FIG. 3, when the electric motor 3 (cooling fan 2) is locked at time t, the temperature rise of the circuit board constituting the control unit 4 can be suppressed even if time elapses. The circuit board of the control unit 4 can be prevented from being damaged.

更に、電動モータ３（冷却ファン２）のロックにより電動モータ３に流れる電流が増加して所定の閾値ａを超えた場合に、電動モータ３への通電を停止させ、一定時間（例えば、数十秒間）Ｔの間停止状態を保持した後に再起動する制御を繰り返すことにより、電動モータ３の温度上昇も抑えられるので、電動モータ３の温度が許容温度以上に上昇して破損することも防止することができる。   Further, when the electric current flowing through the electric motor 3 increases due to the lock of the electric motor 3 (cooling fan 2) and exceeds a predetermined threshold value a, the energization of the electric motor 3 is stopped, and a certain time (for example, several tens of times). By repeating the control of restarting after holding the stopped state for T seconds), the temperature rise of the electric motor 3 can also be suppressed, so that the temperature of the electric motor 3 is prevented from rising above the allowable temperature and being damaged. be able to.

なお、電動モータ３（冷却ファン２）のロック状態が解消された場合には、電動モータ３に流れる電流が所定の閾値ａ以下になるので、通常の電動モータ３のＰＷＭ制御が再開される。   Note that when the lock state of the electric motor 3 (cooling fan 2) is released, the current flowing through the electric motor 3 becomes equal to or less than the predetermined threshold value a, so that the normal PWM control of the electric motor 3 is resumed.

本発明の実施形態に係る電動ファン制御装置の構成を示す図。The figure which shows the structure of the electric fan control apparatus which concerns on embodiment of this invention. 電動モータがロックして過電流が流れた場合の、本実施形態における電動モータへの通電制御を示した図。The figure which showed the electricity supply control to the electric motor in this embodiment when an electric motor locks and an overcurrent flows. 電動モータがロックしたときに、本実施形態における電動モータへの通電制御を行った場合のコントロールユニットの回路基板の温度変化を示した図。The figure which showed the temperature change of the circuit board of a control unit at the time of performing electricity supply control to the electric motor in this embodiment, when an electric motor locks. 電動モータがロックして過電流が流れた場合の、従来例における電動モータへの通電制御を示した図。The figure which showed the energization control to the electric motor in a prior art example, when an electric motor locks and an overcurrent flows. 電動モータがロックしたときに、従来例における電動モータへの通電制御を行った場合のモータ制御装置の回路基板の温度変化を示した図。The figure which showed the temperature change of the circuit board of the motor control apparatus at the time of performing electricity supply control to the electric motor in a prior art example, when an electric motor locks.

符号の説明Explanation of symbols

１ 電動ファン制御装置
２ 冷却ファン
３ 電動モータ
４ コントロールユニット（モータ制御手段）
５ ラジエータ（熱交換器）
６ バッテリ
７ 水温センサ（冷却媒体温度検出センサ）
８ 制御部
９ ＰＷＭ駆動・出力回路
１０ 電流検出回路（電流検出手段） DESCRIPTION OF SYMBOLS 1 Electric fan control apparatus 2 Cooling fan 3 Electric motor 4 Control unit (motor control means)
5 Radiator (heat exchanger)
6 Battery 7 Water temperature sensor (cooling medium temperature detection sensor)
8 Control unit 9 PWM drive / output circuit 10 Current detection circuit (current detection means)

Claims (1)

車両用冷却システムにおける熱交換器内を流れる冷却媒体を送風によって冷却する冷却ファンと、前記冷却ファンを駆動する電動モータと、少なくも冷却媒体温度検出センサにより検出された前記冷却媒体の温度情報に基づいて前記電動モータをパルス幅変調制御するモータ制御手段とを備えた電動ファン制御装置において、
前記モータ制御手段は、前記電動モータに流れる電流を検出する電流検出手段を有し、
前記電流検出手段が前記電動モータに所定の閾値以上の過電流が流れたことを検出した場合に、前記モータ制御手段は、前記電動モータへの通電を停止させた後に、一定時間経過してから前記電動モータへの通電を再開する制御を、前記電動モータに前記所定の閾値以上の過電流が流れる間繰り返して行う、
ことを特徴とする電動ファン制御装置。 The temperature information of the cooling medium detected by the cooling fan that cools the cooling medium flowing in the heat exchanger in the vehicle cooling system by blowing air, the electric motor that drives the cooling fan, and at least the cooling medium temperature detection sensor. In an electric fan control device comprising: motor control means for performing pulse width modulation control of the electric motor based on:
The motor control means has current detection means for detecting a current flowing through the electric motor,
When the current detection unit detects that an overcurrent of a predetermined threshold value or more has flowed through the electric motor, the motor control unit waits for a certain period of time after stopping energization of the electric motor. The control for resuming energization of the electric motor is repeatedly performed while an overcurrent greater than or equal to the predetermined threshold flows through the electric motor.
An electric fan control device characterized by that.
JP2008134932A 2008-05-23 2008-05-23 Electric fan control device Pending JP2009281302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008134932A JP2009281302A (en) 2008-05-23 2008-05-23 Electric fan control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008134932A JP2009281302A (en) 2008-05-23 2008-05-23 Electric fan control device

Publications (1)

Publication Number Publication Date
JP2009281302A true JP2009281302A (en) 2009-12-03

Family

ID=41452004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008134932A Pending JP2009281302A (en) 2008-05-23 2008-05-23 Electric fan control device

Country Status (1)

Country Link
JP (1) JP2009281302A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101304941B1 (en) 2011-12-15 2013-09-06 현대자동차주식회사 Cooling method of engine room using smart junction box
CN103821753A (en) * 2014-03-19 2014-05-28 浙江比洛德传动技术有限公司 Heat dissipation fan control method and system for vehicles
CN105019995A (en) * 2015-08-07 2015-11-04 广西玉柴机器股份有限公司 Multifunctional fan supporting plate structure
JP2018157743A (en) * 2017-03-20 2018-10-04 エルエス産電株式会社Lsis Co., Ltd. Managing device for cooling inverter

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6042753B2 (en) * 1979-04-03 1985-09-25 ブラザー工業株式会社 sewing machine safety device
JPH01268481A (en) * 1988-04-15 1989-10-26 Toshiba Corp Power source for dc motor
JPH03239189A (en) * 1990-02-14 1991-10-24 Matsushita Electric Ind Co Ltd Motor lock protective circuit
JPH05292790A (en) * 1992-04-13 1993-11-05 Fujitsu Ten Ltd Controller having motor protective function
JP2000224861A (en) * 1999-01-27 2000-08-11 Fujitsu General Ltd Protective method for inverter apparatus
JP2003189460A (en) * 2001-12-17 2003-07-04 Yazaki Corp Protective circuit against overcurrent
JP2004068760A (en) * 2002-08-08 2004-03-04 Calsonic Kansei Corp Electric motor fan controlling equipment for cooling heat exchanger
JP2005080417A (en) * 2003-09-01 2005-03-24 Calsonic Kansei Corp Motor drive control device
JP2005080384A (en) * 2003-08-29 2005-03-24 Calsonic Kansei Corp Electric fan control unit
JP2007028736A (en) * 2005-07-13 2007-02-01 Ebara Corp Thermal protector, motor protector, submerged pump device, and manhole pumping device
JP2008058134A (en) * 2006-08-31 2008-03-13 Yazaki Corp Motor abnormality detecting device and method

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6042753B2 (en) * 1979-04-03 1985-09-25 ブラザー工業株式会社 sewing machine safety device
JPH01268481A (en) * 1988-04-15 1989-10-26 Toshiba Corp Power source for dc motor
JPH03239189A (en) * 1990-02-14 1991-10-24 Matsushita Electric Ind Co Ltd Motor lock protective circuit
JPH05292790A (en) * 1992-04-13 1993-11-05 Fujitsu Ten Ltd Controller having motor protective function
JP2000224861A (en) * 1999-01-27 2000-08-11 Fujitsu General Ltd Protective method for inverter apparatus
JP2003189460A (en) * 2001-12-17 2003-07-04 Yazaki Corp Protective circuit against overcurrent
JP2004068760A (en) * 2002-08-08 2004-03-04 Calsonic Kansei Corp Electric motor fan controlling equipment for cooling heat exchanger
JP2005080384A (en) * 2003-08-29 2005-03-24 Calsonic Kansei Corp Electric fan control unit
JP2005080417A (en) * 2003-09-01 2005-03-24 Calsonic Kansei Corp Motor drive control device
JP2007028736A (en) * 2005-07-13 2007-02-01 Ebara Corp Thermal protector, motor protector, submerged pump device, and manhole pumping device
JP2008058134A (en) * 2006-08-31 2008-03-13 Yazaki Corp Motor abnormality detecting device and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101304941B1 (en) 2011-12-15 2013-09-06 현대자동차주식회사 Cooling method of engine room using smart junction box
CN103821753A (en) * 2014-03-19 2014-05-28 浙江比洛德传动技术有限公司 Heat dissipation fan control method and system for vehicles
CN105019995A (en) * 2015-08-07 2015-11-04 广西玉柴机器股份有限公司 Multifunctional fan supporting plate structure
JP2018157743A (en) * 2017-03-20 2018-10-04 エルエス産電株式会社Lsis Co., Ltd. Managing device for cooling inverter
US10251320B2 (en) 2017-03-20 2019-04-02 Lsis Co., Ltd. Managing device for cooling inverter

Similar Documents

Publication Publication Date Title
JP4964536B2 (en) Motor abnormality detection device and method
JP4840159B2 (en) Load drive control device and load drive control system
JP4529666B2 (en) Load drive device and load drive control method
JP2009213325A (en) Fuel pump controller
JP2008037334A (en) Radiator fan controller for hybrid car
JP2009281302A (en) Electric fan control device
JP2006299810A (en) Cooling fan drive control device for vehicle
JPH108959A (en) Electric motor fan device used in cooling system for automobile
JP4922749B2 (en) Fan system
JP2010173445A (en) Cooling system for hybrid vehicle
JP4861367B2 (en) Electric fan control device
WO2014054582A1 (en) Fan motor control device
JP2006291908A (en) Electric fan control device for engine cooling system
JP2004178967A (en) Relay control device
JP2009100488A (en) Alternator controller for vehicle
JP2007041739A (en) Fan drive control method and device
JP2009051255A (en) Control device of electric power steering device
JP2008125154A (en) Motor driving device
JP4088494B2 (en) Electric fan control device for cooling heat exchanger
JP2005150920A (en) Output circuit
JP2003049647A (en) Electric cooling fan device for vehicle
WO2014054581A1 (en) Fan motor control device
JP4489629B2 (en) Cooling fan control device
JP2004268766A (en) Air conditioner for vehicle
JP2004173348A (en) Electric motor control device

Legal Events

Date Code Title Description
A621 Written request for application examination

Effective date: 20100910

Free format text: JAPANESE INTERMEDIATE CODE: A621

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20111213

A02 Decision of refusal

Effective date: 20120403

Free format text: JAPANESE INTERMEDIATE CODE: A02