JP2009040191A - Power supply device for vehicle - Google Patents

Power supply device for vehicle Download PDF

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JP2009040191A
JP2009040191A JP2007206771A JP2007206771A JP2009040191A JP 2009040191 A JP2009040191 A JP 2009040191A JP 2007206771 A JP2007206771 A JP 2007206771A JP 2007206771 A JP2007206771 A JP 2007206771A JP 2009040191 A JP2009040191 A JP 2009040191A
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temperature
heater
voltage value
heating
detection means
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Shuji Mayama
修二 真山
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Priority to JP2007206771A priority Critical patent/JP2009040191A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply device for a vehicle which can raise temperatures of a large capacity heater having a specification for cold districts etc. and a heater specific to cold districts, at high speed. <P>SOLUTION: This power supply device is provided with an in-vehicle battery 4 for supplying power to a heater Ha, a voltage detection means 14 for detecting an input/output voltage, and DC heating means 13 and 16 for heating the heater Ha by DC power until the temperature of the heater Ha detected by the temperature detection means 18 reaches a prescribed temperature when the heater Ha is turned on. The power supply device is provided with pulse energizing heating means 13 and 16 for heating the heater Ha by a periodic pulse current after the temperature detected by the temperature detection means 18 reaches the prescribed temperature, a means 13 for deciding whether or not a voltage value detected by the voltage detection means 14 is lower than a prescribed voltage value, and a means 13 for inhibiting operations of the DC heating means or the pulse energizing heating means 13 and 16 when the deciding means 13 decides that the voltage value is lower than the prescribed voltage value. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、加熱器に電力を供給する車載バッテリを備え、加熱器がオンされたときに、加熱器の温度が所定温度になる迄、加熱器を直流電力により加熱する車両用電源装置に関するものである。   The present invention relates to a vehicle power supply apparatus that includes an in-vehicle battery that supplies electric power to a heater, and that heats the heater with DC power until the heater reaches a predetermined temperature when the heater is turned on. It is.

寒冷地仕様の車両では、通常の車載ヒータより大容量のヒータ(デフロスタ)、及び寒冷地固有のヒータ(フロントデアイサ、シートヒータ)を搭載しており、車両用電源装置への負荷は大きくなっている。これらのヒータ(加熱器)では、EPS(電動パワーステアリング装置)等の大容量の電気負荷が作動した場合に、各ECU(Electronic Control Unit)がリセットしたり、他の電気負荷の動作が不安定にならないように電源電圧を維持する為、電流容量が制限されている。
例えば、図11(b)に示すように、ヒータHa,Hbが作動しているときに、EPSが作動しても、(a)に示すように、電源電圧が所定電圧よりは低下しないように、ヒータHa,Hbの電流容量は制限されている。
Cold district specification vehicles are equipped with larger capacity heaters (defrosters) than normal onboard heaters, and cold district specific heaters (front deisa, seat heaters), increasing the load on the vehicle power supply. ing. In these heaters (heaters), when a large-capacity electric load such as EPS (electric power steering device) is activated, each ECU (Electronic Control Unit) is reset or the operation of other electric loads is unstable. The current capacity is limited in order to maintain the power supply voltage so that it does not occur.
For example, as shown in FIG. 11B, when the heaters Ha and Hb are operating, even if EPS is operated, the power supply voltage is not lowered below a predetermined voltage as shown in FIG. 11A. The current capacities of the heaters Ha and Hb are limited.

特許文献1には、排気系のヒータ一体型触媒への通電制御を行い、ヒータ一体型触媒の抵抗値検出用データを記憶し、ヒータ一体型触媒への通電時のデューティ制御値及びオルタネータ回転数に応じて、抵抗値検出用データから抵抗値を検出し、検出した抵抗値に応じてヒータ一体型触媒作動時のオルタネータ出力電圧又はヒータ一体型触媒制御時間を調整する通電装置が開示されている。
特開平8−288051号公報
In Patent Document 1, energization control is performed on the heater-integrated catalyst in the exhaust system, resistance value detection data of the heater-integrated catalyst is stored, and the duty control value and alternator rotation speed when energizing the heater-integrated catalyst are stored. Accordingly, there is disclosed an energization device that detects a resistance value from resistance value detection data and adjusts an alternator output voltage or heater integrated catalyst control time when the heater integrated catalyst is operated according to the detected resistance value. .
JP-A-8-288051

上述した従来の車両用電源装置では、図11(b)に示すように、ヒータHa,Hbの電流容量が制限されているので、ヒータHa,Hbの昇温は、(c)に示すように緩やかであり、所要の温度に達する迄に、時間が掛かるという問題がある。
本発明は、上述したような事情に鑑みてなされたものであり、寒冷地仕様等の大容量のヒータ及び寒冷地固有のヒータ等の高速昇温を図ることができる車両用電源装置を提供することを目的とする。
In the above-described conventional vehicle power supply device, as shown in FIG. 11B, the current capacities of the heaters Ha and Hb are limited, so that the heaters Ha and Hb are heated as shown in FIG. There is a problem that it takes time to reach a required temperature.
The present invention has been made in view of the above-described circumstances, and provides a vehicle power supply device capable of achieving high-temperature temperature rise of a large-capacity heater such as a cold district specification and a heater unique to the cold district. For the purpose.

第1発明に係る車両用電源装置は、加熱器に電力を供給する車載バッテリと、該車載バッテリの入出力電圧を検出する電圧検出手段と、前記加熱器の温度を検出する温度検出手段と、前記加熱器がオンされたときに、前記温度検出手段が検出した温度が所定温度になる迄、前記加熱器を直流電力により加熱する直流加熱手段とを備えた車両用電源装置において、前記温度検出手段が検出した温度が所定温度に達した後は、前記加熱器を周期的なパルス電流により加熱するパルス通電加熱手段と、前記電圧検出手段が検出した電圧値が所定電圧値より低いか否かを判定する手段と、該手段が所定電圧値より低いと判定しているときは、前記直流加熱手段又はパルス通電加熱手段の動作を禁止する手段とを備えることを特徴とする。   A vehicle power supply device according to a first aspect of the present invention includes an in-vehicle battery that supplies electric power to a heater, a voltage detection unit that detects an input / output voltage of the in-vehicle battery, a temperature detection unit that detects a temperature of the heater, DC power supply means for heating the heater with DC power until the temperature detected by the temperature detection means reaches a predetermined temperature when the heater is turned on. After the temperature detected by the means reaches a predetermined temperature, pulse energization heating means for heating the heater with a periodic pulse current, and whether the voltage value detected by the voltage detection means is lower than a predetermined voltage value And a means for prohibiting the operation of the direct current heating means or the pulse current heating means when the means is determined to be lower than a predetermined voltage value.

この車両用電源装置では、車載バッテリが、加熱器に電力を供給し、電圧検出手段が、車載バッテリの入出力電圧を検出する。温度検出手段が、加熱器の温度を検出し、直流加熱手段が、加熱器がオンされたときに、温度検出手段が検出した温度が所定温度になる迄、加熱器を直流電力により加熱する。温度検出手段が検出した温度が所定温度に達した後は、パルス通電加熱手段が、加熱器を周期的なパルス電流により加熱し、判定する手段が、電圧検出手段が検出した電圧値が所定電圧値より低いか否かを判定する。判定する手段が所定電圧値より低いと判定しているときは、禁止する手段が、直流加熱手段又はパルス通電加熱手段の動作を禁止する。   In this vehicle power supply device, the in-vehicle battery supplies power to the heater, and the voltage detection means detects the input / output voltage of the in-vehicle battery. The temperature detection means detects the temperature of the heater, and the DC heating means heats the heater with DC power until the temperature detected by the temperature detection means reaches a predetermined temperature when the heater is turned on. After the temperature detected by the temperature detection means reaches a predetermined temperature, the pulse energization heating means heats the heater with a periodic pulse current, and the determination means determines that the voltage value detected by the voltage detection means is a predetermined voltage. It is determined whether it is lower than the value. When it is determined that the determining means is lower than the predetermined voltage value, the prohibiting means prohibits the operation of the direct current heating means or the pulse current heating means.

第2発明に係る車両用電源装置は、複数の加熱器に電力を供給する車載バッテリと、該車載バッテリの入出力電圧を検出する電圧検出手段と、前記加熱器の各温度を検出する各温度検出手段と、前記加熱器がオンされたときに、前記温度検出手段が検出した各温度が各所定温度になる迄、前記加熱器を直流電力により加熱する各直流加熱手段とを備えた車両用電源装置において、前記温度検出手段が検出した温度が所定温度に達した後は、前記加熱器を周期的なパルス電流により加熱する各パルス通電加熱手段と、前記電圧検出手段が検出した電圧値が所定電圧値より低いか否かを判定する手段と、該手段が所定電圧値より低いと判定しているときは、前記直流加熱手段又はパルス通電加熱手段の各動作を禁止する手段とを備え、複数の前記パルス通電加熱手段が作動しているときは、各パルス通電加熱手段の通電期間が重複しないように構成してあることを特徴とする。   A vehicle power supply device according to a second aspect of the invention includes an in-vehicle battery that supplies power to a plurality of heaters, voltage detection means that detects input / output voltages of the in-vehicle battery, and each temperature that detects each temperature of the heater. A vehicle equipped with detection means and DC heating means for heating the heater with DC power until each temperature detected by the temperature detection means reaches a predetermined temperature when the heater is turned on. In the power supply device, after the temperature detected by the temperature detection means reaches a predetermined temperature, each pulse energization heating means for heating the heater with a periodic pulse current, and the voltage value detected by the voltage detection means Means for determining whether or not the voltage is lower than a predetermined voltage value, and means for prohibiting each operation of the DC heating means or the pulse current heating means when the means is determined to be lower than the predetermined voltage value, Multiple said When pulse current heating means is in operation, characterized in that the conduction period of each pulse current heating means are constituted so as not to overlap.

この車両用電源装置では、車載バッテリが、複数の加熱器に電力を供給し、電圧検出手段が、車載バッテリの入出力電圧を検出する。各温度検出手段が、各加熱器の各温度を検出し、各直流加熱手段が、各加熱器がオンされたときに、各温度検出手段が検出した各温度が各所定温度になる迄、各加熱器を直流電力により加熱する。各パルス通電加熱手段が、各温度検出手段が検出した各温度が各所定温度に達した後は、各加熱器を周期的なパルス電流により加熱し、判定する手段が、電圧検出手段が検出した電圧値が所定電圧値より低いか否かを判定する。判定する手段が所定電圧値より低いと判定しているときは、禁止する手段が、各直流加熱手段又は各パルス通電加熱手段の各動作を禁止し、複数のパルス通電加熱手段が作動しているときは、各パルス通電加熱手段の通電期間を重複させない。   In this vehicle power supply device, the in-vehicle battery supplies power to the plurality of heaters, and the voltage detection means detects the input / output voltage of the in-vehicle battery. Each temperature detection means detects each temperature of each heater, and each DC heating means, when each heater is turned on, until each temperature detected by each temperature detection means reaches each predetermined temperature Heat the heater with DC power. Each pulse energization heating means heats each heater with a periodic pulse current after each temperature detected by each temperature detection means reaches each predetermined temperature, and the voltage detection means detects the means for judging. It is determined whether or not the voltage value is lower than a predetermined voltage value. When it is determined that the determining means is lower than the predetermined voltage value, the prohibiting means prohibits each operation of each DC heating means or each pulse current heating means, and a plurality of pulse current heating means are operating. When doing so, the energizing periods of the pulse energizing heating means are not overlapped.

第3発明に係る車両用電源装置は、前記パルス通電加熱手段は、前記温度検出手段が検出した温度に基づくPWM(Pulse Width Modulation)制御によるパルス電流により、前記加熱器を加熱するように構成してあることを特徴とする。   According to a third aspect of the present invention, there is provided the vehicular power supply device, wherein the pulse energization heating means is configured to heat the heater by a pulse current by PWM (Pulse Width Modulation) control based on the temperature detected by the temperature detection means. It is characterized by being.

第1,3発明に係る車両用電源装置によれば、寒冷地仕様等の大容量のヒータ及び寒冷地固有のヒータ等の高速昇温を図ることができる車両用電源装置を実現できる。   According to the vehicle power supply apparatus according to the first and third aspects of the invention, it is possible to realize a vehicle power supply apparatus capable of achieving a high temperature increase such as a large-capacity heater having a cold district specification and a heater unique to the cold district.

第2発明に係る車両用電源装置によれば、寒冷地仕様等の大容量のヒータ及び寒冷地固有のヒータ等の高速昇温を図ることができ、また、ピーク時の負荷電流を低減することができる車両用電源装置を実現できる。   According to the vehicle power supply device of the second aspect of the present invention, it is possible to increase the temperature of a large-capacity heater such as a cold district specification and a heater unique to the cold district, and to reduce the load current at the peak. It is possible to realize a vehicle power supply device capable of

以下に、本発明をその実施の形態を示す図面に基づき説明する。
(実施の形態1)
図1は、本発明に係る車両用電源装置の実施の形態1の概略構成を示すブロック図である。
この車両用電源装置は、図示しないエンジンに連動して、オルタネータ(車載発電機、交流発電機)1が発電し、その発電電圧は、オルタネータ1に付設されたレギュレータ2が、オルタネータ1の界磁電流を調節することにより定電圧制御され、また昇降圧制御される。
Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments thereof.
(Embodiment 1)
FIG. 1 is a block diagram showing a schematic configuration of a first embodiment of a vehicle power supply device according to the present invention.
In this vehicle power supply device, an alternator (on-vehicle generator, AC generator) 1 generates power in conjunction with an engine (not shown), and the generated voltage is generated by a regulator 2 attached to the alternator 1 by the field of the alternator 1. Constant voltage control is performed by adjusting the current, and step-up / step-down control is performed.

オルタネータ1が発電した電力は、オルタネータ1内で整流され、リレーボックス11内のヒューズF0を通じて、車載バッテリ4に充電される。電流検出器3が、車載バッテリ4の入出力電流値を検出して、充電制御ECU(Electronic Control Unit)12に与え、充電制御ECU12内の電圧検出手段5が、車載バッテリ4の入出力電圧値を検出する。   The electric power generated by the alternator 1 is rectified in the alternator 1 and charged to the in-vehicle battery 4 through the fuse F0 in the relay box 11. The current detector 3 detects the input / output current value of the in-vehicle battery 4 and supplies it to a charge control ECU (Electronic Control Unit) 12, and the voltage detection means 5 in the charge control ECU 12 detects the input / output voltage value of the in-vehicle battery 4. Is detected.

充電制御ECU12は、与えられた車両の速度値に基づき、アイドリング、加速走行、定常走行及び減速走行の各車両状態を判定し、判定した車両状態に応じた発電モードで発電するように、レギュレータ2及びオルタネータ1を制御する充電制御を行う。発電モードは、加速走行のようにエンジンの負荷が大きいときは、発電電圧を降下させ、減速走行のようにエンジンの負荷が小さいときは、発電電圧を上昇させるように定められており、これによりエンジンの負荷を軽減し、車両の燃費向上を図っている。   The charging control ECU 12 determines each vehicle state of idling, acceleration traveling, steady traveling, and deceleration traveling based on the given vehicle speed value, and generates power in the power generation mode corresponding to the determined vehicle state. And charge control for controlling the alternator 1 is performed. The power generation mode is determined to decrease the generated voltage when the engine load is large as in acceleration traveling, and to increase the generated voltage when the engine load is small such as deceleration traveling. The engine load is reduced to improve vehicle fuel efficiency.

車載バッテリ4の出力電圧は、例えば、ヒューズF1を通じて、EPS駆動回路6に印加され、EPS駆動回路6は、図示しないトルク検出器が検出したハンドルの操作力に応じて、EPS(電動パワーステアリング装置)のモータ7を駆動する。
車載バッテリ4の出力電圧は、また、ヒューズF2及びFET(電界効果トランジスタ)16を通じてヒータ(加熱器)Haに印加される。FET16は、リレーボックス11内に設置されている。車載バッテリ4の出力電圧は、その他の電気負荷へもそれぞれのヒューズを通じて印加される。
The output voltage of the in-vehicle battery 4 is applied to the EPS drive circuit 6 through, for example, the fuse F1, and the EPS drive circuit 6 is provided with an EPS (electric power steering apparatus) according to the operation force of the handle detected by a torque detector (not shown). ) Is driven.
The output voltage of the in-vehicle battery 4 is also applied to the heater (heater) Ha through the fuse F2 and the FET (field effect transistor) 16. The FET 16 is installed in the relay box 11. The output voltage of the in-vehicle battery 4 is applied to other electric loads through the respective fuses.

ヒータHaのスイッチSW2のオン/オフ信号は、リレーボックス11内に設置された制御部13に与えられる。
ヒータHaには温度検出器(温度検出手段)18が付設され、温度検出器18が検出したヒータHaの温度は制御部13に与えられる。
制御部13は、マイクロコンピュータを備えており、スイッチSW2のオン信号を与えられている期間、温度検出器18が検出した温度に応じてFET16をオン(直流加熱手段)又はPWM制御する(パルス通電加熱手段)。また、制御部13内の電圧検出手段14が、車載バッテリ4の入出力電圧値(電気負荷へ印加する電圧値)を検出する。
The on / off signal of the switch SW2 of the heater Ha is given to the control unit 13 installed in the relay box 11.
The heater Ha is provided with a temperature detector (temperature detection means) 18, and the temperature of the heater Ha detected by the temperature detector 18 is given to the controller 13.
The control unit 13 includes a microcomputer, and turns on the FET 16 (DC heating means) or performs PWM control (pulse energization) in accordance with the temperature detected by the temperature detector 18 during the period when the ON signal of the switch SW2 is given. Heating means). Moreover, the voltage detection means 14 in the control part 13 detects the input-output voltage value (voltage value applied to an electric load) of the vehicle-mounted battery 4.

以下に、このような構成の車両用電源装置の動作例を、それを示す図2,3のフローチャートを参照しながら説明する。
制御部13は、スイッチSW2がオンされると(図2S1)、FET16をオンにして、ヒータHaの直流電流による加熱を開始する(S3)。次いで、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S5)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S7)。
制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S7)、温度検出器18が検出したヒータHaの温度Tを読込み(S9)、読込んだ温度Tが所定温度以上であるか否かを判定する(S11)。
Hereinafter, an operation example of the vehicle power supply device having such a configuration will be described with reference to the flowcharts of FIGS.
When the switch SW2 is turned on (S1 in FIG. 2), the control unit 13 turns on the FET 16 and starts heating by the direct current of the heater Ha (S3). Next, the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S5), and it is determined whether or not the read voltage value V is lower than a predetermined voltage value (S7).
If the read voltage value V is not lower than the predetermined voltage value (S7), the controller 13 reads the heater temperature T detected by the temperature detector 18 (S9), and the read temperature T is equal to or higher than the predetermined temperature. It is determined whether or not (S11).

制御部13は、読込んだ温度Tが所定温度以上でなければ(S11)、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込む(S5)。
制御部13は、例えば、大電流を消費するEPS(電動パワーステアリング装置)が作動して、読込んだ電圧値Vが所定電圧値より低ければ(S7)、FET16をオフにして、ヒータHaの直流電流による加熱を中止する(S13)。次いで、所定時間(例えば2秒間)待機した(S14)後、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S15)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S17)。
If the read temperature T is not equal to or higher than the predetermined temperature (S11), the control unit 13 reads the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 (S5).
For example, when an EPS (electric power steering device) that consumes a large current is activated and the read voltage value V is lower than a predetermined voltage value (S7), the control unit 13 turns off the FET 16 and turns off the heater Ha. The heating by the direct current is stopped (S13). Next, after waiting for a predetermined time (for example, 2 seconds) (S14), the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S15), and the read voltage value V is lower than the predetermined voltage value. It is determined whether or not (S17).

制御部13は、読込んだ電圧値Vが所定電圧値より低ければ(S17)、再度、車載バッテリ4の入出力電圧値Vを読込み(S15)、以後、読込んだ電圧値Vが所定電圧値以上になる(S17)迄、ヒータHaの直流電流による加熱を中止する(S13)。
制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S17)、ヒータHaの直流加熱を再び開始する(S3)。
If the read voltage value V is lower than the predetermined voltage value (S17), the control unit 13 reads the input / output voltage value V of the in-vehicle battery 4 again (S15). Thereafter, the read voltage value V is the predetermined voltage. The heating by the direct current of the heater Ha is stopped until the value exceeds the value (S17) (S13).
If the read voltage value V is not lower than the predetermined voltage value (S17), the control unit 13 starts DC heating of the heater Ha again (S3).

制御部13は、読込んだ温度Tが所定温度以上であれば(S11)、温度検出器18が検出した温度に基づくPWM制御により、FET16をオン/オフさせて通電し、ヒータHaの加熱を開始する(図3S19)。次いで、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S21)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S23)。
制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S23)、温度検出器18が検出したヒータHaの温度Tを読込む(S25)。次いで、読込んだ温度Tに基づくPWM制御により、FET16をオン/オフさせて通電し、ヒータHaの温度を制御し(S27)、車載バッテリ4の入出力電圧値Vを読込む(S21)。
If the read temperature T is equal to or higher than the predetermined temperature (S11), the controller 13 turns on and off the FET 16 by PWM control based on the temperature detected by the temperature detector 18, and heats the heater Ha. The process starts (S19 in FIG. 3). Next, the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S21), and it is determined whether or not the read voltage value V is lower than a predetermined voltage value (S23).
If the read voltage value V is not lower than the predetermined voltage value (S23), the controller 13 reads the temperature T of the heater Ha detected by the temperature detector 18 (S25). Next, the PWM control based on the read temperature T turns on and off the FET 16 to control the temperature of the heater Ha (S27), and the input / output voltage value V of the in-vehicle battery 4 is read (S21).

制御部13は、例えば、大電流を消費するEPS(電動パワーステアリング装置)が作動して、読込んだ電圧値Vが所定電圧値より低ければ(S23)、FET16をオフにして、PWM制御による通電を中止して、ヒータHaの加熱を中止する(S29)。次いで、所定時間(例えば2秒間)待機した(S30)後、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S31)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S33)。   For example, if an EPS (electric power steering device) that consumes a large current is activated and the read voltage value V is lower than a predetermined voltage value (S23), the control unit 13 turns off the FET 16 and performs PWM control. The energization is stopped and the heating of the heater Ha is stopped (S29). Next, after waiting for a predetermined time (for example, 2 seconds) (S30), the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S31), and the read voltage value V is lower than the predetermined voltage value. It is determined whether or not (S33).

制御部13は、読込んだ電圧値Vが所定電圧値より低ければ(S33)、再度、車載バッテリ4の入出力電圧値Vを読込み(S31)、以後、読込んだ電圧値Vが所定電圧値以上になる(S33)迄、ヒータHaのPWM制御による通電を中止して加熱を中止する(S29)。
制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S33)、温度検出器18が検出した温度に基づくPWM制御により、FET16をオン/オフさせて通電し、ヒータHaの加熱を再び開始する(S19)。
If the read voltage value V is lower than the predetermined voltage value (S33), the control unit 13 reads the input / output voltage value V of the in-vehicle battery 4 again (S31). Thereafter, the read voltage value V is the predetermined voltage. Until the value exceeds the value (S33), the energization by the PWM control of the heater Ha is stopped and the heating is stopped (S29).
If the read voltage value V is not lower than the predetermined voltage value (S33), the controller 13 turns on and off the FET 16 by PWM control based on the temperature detected by the temperature detector 18, and the heater Ha is turned on. Heating is started again (S19).

以上により、図4(b)に示すように、大電流を消費するEPSが作動しても、負荷電流は急増せず、(a)に示すように、電源電圧(車載バッテリ4の入出力電圧)は、各ECU(Electronic Control Unit)がリセットしたり、他の電気負荷の動作が不安定にならない下限電圧以上に維持することができる。また、従来のように制限されない直流の大電流によりヒータHaを加熱することができるので、(c)に示すように、ヒータHaを所定温度まで高速に上昇させることができる。また、電源電圧を監視しながら、ヒータ電流を制御することにより、EPS等の短期的に大電力を消費する負荷の作動時には、EPSに電力を優先配分し、ヒータ等、変化が緩慢でユーザが気付き難い電気負荷を、短期的に停止することで、負荷電流の急激な変動を抑制することができる。   As described above, as shown in FIG. 4 (b), even when an EPS that consumes a large current is activated, the load current does not increase rapidly, and as shown in FIG. ) Can be maintained above the lower limit voltage at which each ECU (Electronic Control Unit) is reset or the operation of other electric loads does not become unstable. Further, since the heater Ha can be heated by a large direct current that is not limited as in the prior art, the heater Ha can be raised to a predetermined temperature at high speed as shown in FIG. In addition, by controlling the heater current while monitoring the power supply voltage, when operating a load that consumes a large amount of power in the short term, such as EPS, power is preferentially allocated to the EPS, and the change of the heater, etc. is slow and the user Sudden fluctuations in the load current can be suppressed by stopping an electrical load that is difficult to notice for a short time.

(実施の形態2)
図5は、本発明に係る車両用電源装置の実施の形態2の概略構成を示すブロック図である。
この車両用電源装置は、車載バッテリ4の出力電圧が、ヒューズF3及びFET17を通じてヒータ(加熱器)Hbに印加される。FET17は、リレーボックス11内に設置されている。
(Embodiment 2)
FIG. 5 is a block diagram showing a schematic configuration of the vehicle power supply device according to the second embodiment of the present invention.
In this vehicle power supply device, the output voltage of the in-vehicle battery 4 is applied to the heater (heater) Hb through the fuse F3 and the FET 17. The FET 17 is installed in the relay box 11.

ヒータHbのスイッチSW3のオン/オフ信号が、制御部13に与えられる。ヒータHbには温度検出器(温度検出手段)19が付設され、温度検出器19が検出したヒータHbの温度は制御部13に与えられる。制御部13は、スイッチSW3のオン信号を与えられている期間、温度検出器19が検出した温度に応じてFET17をオン(直流加熱手段)又はPWM制御する(パルス通電加熱手段)。その他の構成は、上述した実施の形態1の車両用電源装置の概略構成(図1)と同様であるので、説明を省略する。   An on / off signal of the switch SW3 of the heater Hb is given to the control unit 13. A temperature detector (temperature detection means) 19 is attached to the heater Hb, and the temperature of the heater Hb detected by the temperature detector 19 is given to the control unit 13. The controller 13 turns on the FET 17 (DC heating means) or performs PWM control (pulse current heating means) in accordance with the temperature detected by the temperature detector 19 during the period when the ON signal of the switch SW3 is given. The other configuration is the same as the schematic configuration (FIG. 1) of the vehicle power supply device of the first embodiment described above, and thus the description thereof is omitted.

以下に、このような構成の車両用電源装置の動作例を、それを示す図6〜9のフローチャートを参照しながら説明する。
制御部13は、スイッチSW2,SW3がオンされると(図6S41)、FET16,17をオンにして、ヒータHa,Hbの直流加熱を開始する(S43)。次いで、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S45)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S47)。
制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S47)、温度検出器18,19が検出したヒータHa,Hbの温度Ta,Tbを読込み(S49)、読込んだ温度Taが所定温度T1以上であるか否かを判定する(S51)。
Below, the operation example of the vehicle power supply device having such a configuration will be described with reference to the flowcharts of FIGS.
When the switches SW2 and SW3 are turned on (S41 in FIG. 6), the controller 13 turns on the FETs 16 and 17 and starts DC heating of the heaters Ha and Hb (S43). Next, the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S45), and it is determined whether or not the read voltage value V is lower than a predetermined voltage value (S47).
If the read voltage value V is not lower than the predetermined voltage value (S47), the controller 13 reads the temperatures Ta and Tb of the heaters Ha and Hb detected by the temperature detectors 18 and 19 (S49) and reads them. It is determined whether or not the temperature Ta is equal to or higher than a predetermined temperature T1 (S51).

制御部13は、読込んだ温度Taが所定温度T1以上でなければ(S51)、読込んだ温度Tbが所定温度T2以上であるか否かを判定し(S53)、温度Tbが所定温度T2以上でなければ、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込む(S45)。
制御部13は、読込んだ温度Taが所定温度T1以上であれば(S51)、読込んだ温度Tbが所定温度T2以上であるか否かを判定する(S61)。
If the read temperature Ta is not equal to or higher than the predetermined temperature T1 (S51), the control unit 13 determines whether the read temperature Tb is equal to or higher than the predetermined temperature T2 (S53), and the temperature Tb is equal to the predetermined temperature T2. Otherwise, the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S45).
If the read temperature Ta is equal to or higher than the predetermined temperature T1 (S51), the control unit 13 determines whether the read temperature Tb is equal to or higher than the predetermined temperature T2 (S61).

制御部13は、例えば、大電流を消費するEPS(電動パワーステアリング装置)が作動して、読込んだ電圧値Vが所定電圧値より低ければ(S47)、FET16,17をオフにして、ヒータHa,Hbの直流電流による加熱を中止する(S55)。次いで、所定時間(例えば2秒間)待機した(S56)後、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S57)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S59)。   For example, if an EPS (electric power steering device) that consumes a large current is activated and the read voltage value V is lower than a predetermined voltage value (S47), the control unit 13 turns off the FETs 16 and 17 and turns off the heaters. Heating by direct current of Ha and Hb is stopped (S55). Next, after waiting for a predetermined time (for example, 2 seconds) (S56), the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S57), and the read voltage value V is lower than the predetermined voltage value. Is determined (S59).

制御部13は、読込んだ電圧値Vが所定電圧値より低ければ(S59)、再度、車載バッテリ4の入出力電圧値Vを読込み(S57)、以後、読込んだ電圧値Vが所定電圧値以上になる(S59)迄、ヒータHa,Hbの直流電流による加熱を中止する(S55)。
制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S59)、ヒータHa,Hbの直流加熱を再び開始する(S43)。
If the read voltage value V is lower than the predetermined voltage value (S59), the control unit 13 reads the input / output voltage value V of the in-vehicle battery 4 again (S57). Thereafter, the read voltage value V is the predetermined voltage. The heating by the direct current of the heaters Ha and Hb is stopped until the value becomes equal to or higher than the value (S59) (S55).
If the read voltage value V is not lower than the predetermined voltage value (S59), the control unit 13 starts DC heating of the heaters Ha and Hb again (S43).

制御部13は、読込んだ温度Tbが所定温度T2以上であれば(S61)、温度検出器18,19がそれぞれ検出した各温度に基づく各PWM制御により、FET16,17をそれぞれオン/オフさせて通電し、ヒータHa,Hbの各加熱を開始する(図7S63)。次いで、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S65)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S67)。
尚、制御部13は、PWM制御によりFET16,17をそれぞれオン/オフさせるときは、図10の拡大図Aに示すように、FET16,17の各オン期間が重複しないようにオン/オフ制御する。また、各オン期間が重複せざるを得ない場合は、重複する期間が最短になるようにオン/オフ制御する。
If the read temperature Tb is equal to or higher than the predetermined temperature T2 (S61), the control unit 13 turns the FETs 16 and 17 on and off by PWM control based on the temperatures detected by the temperature detectors 18 and 19, respectively. Then, the heaters Ha and Hb are heated (S63 in FIG. 7). Next, the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S65), and it is determined whether or not the read voltage value V is lower than a predetermined voltage value (S67).
Note that when the FETs 16 and 17 are turned on / off by PWM control, the control unit 13 performs on / off control so that the on periods of the FETs 16 and 17 do not overlap as shown in the enlarged view A of FIG. . Further, when each on period must be overlapped, on / off control is performed so that the overlapping period is the shortest.

制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S67)、各温度検出器18,19が検出したヒータHa,Hbの各温度Ta,Tbを読込む(S69)。次いで、読込んだ各温度Ta,Tbに基づく各PWM制御により、FET16,17をそれぞれオン/オフさせて通電し、ヒータHa,Hbの各温度を制御し(S71)、車載バッテリ4の入出力電圧値Vを読込む(S65)。   If the read voltage value V is not lower than the predetermined voltage value (S67), the controller 13 reads the temperatures Ta and Tb of the heaters Ha and Hb detected by the temperature detectors 18 and 19 (S69). Next, by each PWM control based on the read temperatures Ta and Tb, the FETs 16 and 17 are turned on / off to energize them, and the temperatures of the heaters Ha and Hb are controlled (S71). The voltage value V is read (S65).

制御部13は、例えば、大電流を消費するEPS(電動パワーステアリング装置)が作動して、読込んだ電圧値Vが所定電圧値より低ければ(S67)、FET16,17をオフにして、PWM制御による通電を中止して、ヒータHa,Hbの各加熱を中止する(S73)。次いで、所定時間(例えば2秒間)待機した(S74)後、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S75)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S77)。   For example, when an EPS (electric power steering device) that consumes a large current is activated and the read voltage value V is lower than a predetermined voltage value (S67), the control unit 13 turns off the FETs 16 and 17 and performs PWM The energization by the control is stopped, and heating of the heaters Ha and Hb is stopped (S73). Next, after waiting for a predetermined time (for example, 2 seconds) (S74), the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S75), and the read voltage value V is lower than the predetermined voltage value. It is determined whether or not (S77).

制御部13は、読込んだ電圧値Vが所定電圧値より低ければ(S77)、再度、車載バッテリ4の入出力電圧値Vを読込み(S75)、以後、読込んだ電圧値Vが所定電圧値以上になる(S77)迄、ヒータHa,HbのPWM制御による各通電を中止して加熱を中止する(S73)。
制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S77)、温度検出器18,19が検出した各温度に基づくPWM制御により、FET16,17をそれぞれオン/オフさせて通電し、ヒータHa,Hbの各加熱を再び開始する(S63)。
If the read voltage value V is lower than the predetermined voltage value (S77), the control unit 13 reads the input / output voltage value V of the in-vehicle battery 4 again (S75). Thereafter, the read voltage value V is the predetermined voltage. Each energization by PWM control of the heaters Ha and Hb is stopped until the value becomes equal to or greater than the value (S77), and heating is stopped (S73).
If the read voltage value V is not lower than the predetermined voltage value (S77), the control unit 13 turns the FETs 16 and 17 on and off by PWM control based on the temperatures detected by the temperature detectors 18 and 19, respectively. Energization is performed, and heating of the heaters Ha and Hb is started again (S63).

制御部13は、読込んだ温度Tbが所定温度T2以上でなければ(図6S61)、温度検出器18が検出した温度に基づくPWM制御により、FET16をオン/オフさせて通電し、ヒータHaの加熱を開始する(図8S79)。次いで、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S81)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S83)。   If the read temperature Tb is not equal to or higher than the predetermined temperature T2 (S61 in FIG. 6), the controller 13 turns on and off the FET 16 by PWM control based on the temperature detected by the temperature detector 18, and the heater Ha is turned on. Heating is started (S79 in FIG. 8). Next, the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S81), and it is determined whether or not the read voltage value V is lower than a predetermined voltage value (S83).

制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S83)、各温度検出器18,19が検出したヒータHa,Hbの各温度Ta,Tbを読込む(S85)。次いで、読込んだ温度Taに基づくPWM制御により、FET16をオン/オフさせて通電し、ヒータHaの温度を制御し(S87)、読込んだ温度Tbが所定温度T2以上であるか否かを判定する(S89)。
制御部13は、読込んだ温度Tbが所定温度T2以上でなければ(S89)、
車載バッテリ4の入出力電圧値Vを読込む(S81)。
制御部13は、読込んだ温度Tbが所定温度T2以上であれば(S89)、温度検出器19が検出した温度に基づくPWM制御により、FET17をオン/オフさせて通電し、ヒータHbの加熱を開始し(S91)、次いで、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込む(図7S65)。
If the read voltage value V is not lower than the predetermined voltage value (S83), the controller 13 reads the temperatures Ta and Tb of the heaters Ha and Hb detected by the temperature detectors 18 and 19 (S85). Then, the PWM control based on the read temperature Ta is used to turn on and off the FET 16 to energize the heater Ha to control the temperature of the heater Ha (S87), and whether or not the read temperature Tb is equal to or higher than a predetermined temperature T2. Determination is made (S89).
If the read temperature Tb is not equal to or higher than the predetermined temperature T2 (S89),
The input / output voltage value V of the in-vehicle battery 4 is read (S81).
If the read temperature Tb is equal to or higher than the predetermined temperature T2 (S89), the control unit 13 turns on and off the FET 17 by PWM control based on the temperature detected by the temperature detector 19, and heats the heater Hb. (S91), and then the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S65 in FIG. 7).

制御部13は、例えば、大電流を消費するEPSが作動して、読込んだ電圧値Vが所定電圧値より低ければ(図8S83)、FET16,17をオフにして、ヒータHaのPWM制御による通電を止めて加熱を中止し、ヒータHbの直流加熱を中止する(S93)。次いで、所定時間(例えば2秒間)待機した(S94)後、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S95)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S97)。   For example, if the EPS that consumes a large current is activated and the read voltage value V is lower than the predetermined voltage value (S83 in FIG. 8), the control unit 13 turns off the FETs 16 and 17 and performs PWM control of the heater Ha. The energization is stopped to stop the heating, and the DC heating of the heater Hb is stopped (S93). Next, after waiting for a predetermined time (for example, 2 seconds) (S94), the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S95), and the read voltage value V is lower than the predetermined voltage value. It is determined whether or not (S97).

制御部13は、読込んだ電圧値Vが所定電圧値より低ければ(S97)、再度、車載バッテリ4の入出力電圧値Vを読込み(S95)、以後、読込んだ電圧値Vが所定電圧値以上になる(S97)迄、ヒータHaのPWM制御による通電加熱、及びヒータHbの直流加熱を中止する(S93)。
制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S97)、FET17をオンさせて、ヒータHbの直流加熱を再び開始し(S99)、温度検出器18が検出した温度に基づくPWM制御により、FET16をオン/オフさせて通電し、ヒータHaの加熱を再び開始する(S79)。
If the read voltage value V is lower than the predetermined voltage value (S97), the control unit 13 reads the input / output voltage value V of the in-vehicle battery 4 again (S95). Thereafter, the read voltage value V is the predetermined voltage. The energization heating by the PWM control of the heater Ha and the DC heating of the heater Hb are stopped until the value exceeds the value (S97) (S93).
If the read voltage value V is not lower than the predetermined voltage value (S97), the controller 13 turns on the FET 17 and restarts the DC heating of the heater Hb (S99), and the temperature detected by the temperature detector 18 is reached. With the PWM control based on the above, the FET 16 is turned on / off and energized, and the heating of the heater Ha is started again (S79).

制御部13は、読込んだ温度Tbが所定温度T2以上であれば(図6S53)、温度検出器19が検出した温度に基づくPWM制御により、FET17をオン/オフさせて通電し、ヒータHbの加熱を開始する(図9S101)。次いで、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S103)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S105)。   If the read temperature Tb is equal to or higher than the predetermined temperature T2 (S53 in FIG. 6), the controller 13 turns on and off the FET 17 by PWM control based on the temperature detected by the temperature detector 19, and the heater Hb Heating is started (S101 in FIG. 9). Next, the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S103), and it is determined whether or not the read voltage value V is lower than a predetermined voltage value (S105).

制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S105)、各温度検出器18,19が検出したヒータHa,Hbの各温度Ta,Tbを読込む(S107)。次いで、読込んだ温度Tbに基づくPWM制御により、FET17をオン/オフさせて通電し、ヒータHbの温度を制御し(S109)、読込んだ温度Taが所定温度T1以上であるか否かを判定する(S111)。
制御部13は、読込んだ温度Taが所定温度T1以上でなければ(S111)、車載バッテリ4の入出力電圧値Vを読込む(S103)。
制御部13は、読込んだ温度Taが所定温度T1以上であれば(S111)、温度検出器18が検出した温度に基づくPWM制御により、FET16をオン/オフさせて通電し、ヒータHaの加熱を開始し(S113)、次いで、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込む(図7S65)。
If the read voltage value V is not lower than the predetermined voltage value (S105), the controller 13 reads the temperatures Ta and Tb of the heaters Ha and Hb detected by the temperature detectors 18 and 19 (S107). Next, by PWM control based on the read temperature Tb, the FET 17 is turned on / off and energized to control the temperature of the heater Hb (S109), and whether or not the read temperature Ta is equal to or higher than the predetermined temperature T1. Determination is made (S111).
If the read temperature Ta is not equal to or higher than the predetermined temperature T1 (S111), the control unit 13 reads the input / output voltage value V of the in-vehicle battery 4 (S103).
If the read temperature Ta is equal to or higher than the predetermined temperature T1 (S111), the controller 13 turns on and off the FET 16 by PWM control based on the temperature detected by the temperature detector 18, and heats the heater Ha. Then, the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S65 in FIG. 7).

制御部13は、例えば、大電流を消費するEPSが作動して、読込んだ電圧値Vが所定電圧値より低ければ(図9S105)、FET16,17をオフにして、ヒータHaの直流加熱を中止し、ヒータHbのPWM制御による通電を止めて加熱を中止する(S115)。次いで、所定時間(例えば2秒間)待機した(S116)後、電圧検出手段14で検出した車載バッテリ4の入出力電圧値Vを読込み(S117)、読込んだ電圧値Vが所定電圧値より低いか否かを判定する(S119)。   For example, if the EPS that consumes a large current is activated and the read voltage value V is lower than the predetermined voltage value (S105 in FIG. 9), the control unit 13 turns off the FETs 16 and 17 and performs DC heating of the heater Ha. The heating is stopped by stopping the energization by the PWM control of the heater Hb (S115). Next, after waiting for a predetermined time (for example, 2 seconds) (S116), the input / output voltage value V of the in-vehicle battery 4 detected by the voltage detection means 14 is read (S117), and the read voltage value V is lower than the predetermined voltage value. It is determined whether or not (S119).

制御部13は、読込んだ電圧値Vが所定電圧値より低ければ(S119)、再度、車載バッテリ4の入出力電圧値Vを読込み(S117)、以後、読込んだ電圧値Vが所定電圧値以上になる(S119)迄、ヒータHaの直流加熱、及びヒータHbのPWM制御による通電加熱を中止する(S115)。
制御部13は、読込んだ電圧値Vが所定電圧値より低くなければ(S119)、FET16をオンさせて、ヒータHaの直流加熱を再び開始し(S121)、温度検出器19が検出した温度に基づくPWM制御により、FET17をオン/オフさせて通電し、ヒータHbの加熱を再び開始する(S101)。
If the read voltage value V is lower than the predetermined voltage value (S119), the control unit 13 reads the input / output voltage value V of the in-vehicle battery 4 again (S117). Thereafter, the read voltage value V is the predetermined voltage. Until the value exceeds the value (S119), the direct current heating of the heater Ha and the energization heating by the PWM control of the heater Hb are stopped (S115).
If the read voltage value V is not lower than the predetermined voltage value (S119), the control unit 13 turns on the FET 16 and starts DC heating of the heater Ha again (S121), and the temperature detected by the temperature detector 19 With the PWM control based on the above, the FET 17 is turned on / off to energize, and the heating of the heater Hb is started again (S101).

以上により、ヒータが複数(ここでは2台)設けられている場合でも、図10(b)に示すように、大電流を消費するEPSが作動しても、負荷電流は急増せず、(a)に示すように、電源電圧(車載バッテリ4の入出力電圧)は、各ECUがリセットしたり、他の電気負荷の動作が不安定にならない下限電圧以上に維持することができる。また、従来のように制限されない直流の大電流により、複数のヒータを加熱することができるので、(c)に示すように、各ヒータを所定温度まで高速に、又は従来以上の速さで上昇させることができる。また、電源電圧を監視しながら、複数のヒータへの電流を制御することにより、EPS等の短期的に大電力を消費する負荷の作動時には、EPSに電力を優先配分し、ヒータ等、変化が緩慢でユーザが気付き難い電気負荷を、短期的に停止することで、負荷電流の急激な変動を抑制することができる。   As described above, even when a plurality of heaters (two in this case) are provided, the load current does not increase rapidly even when an EPS that consumes a large current is activated as shown in FIG. ), The power supply voltage (input / output voltage of the in-vehicle battery 4) can be maintained at or above the lower limit voltage at which each ECU is not reset and the operation of other electric loads does not become unstable. Further, since a plurality of heaters can be heated by a large direct current that is not limited as in the prior art, as shown in (c), each heater is raised to a predetermined temperature at a higher speed or at a higher speed than in the prior art. Can be made. In addition, by controlling the current to a plurality of heaters while monitoring the power supply voltage, during the operation of a load that consumes a large amount of power in the short term, such as EPS, power is preferentially allocated to the EPS so that changes in the heater, etc. By stopping the electrical load that is slow and difficult for the user to notice, the rapid fluctuation of the load current can be suppressed.

本発明に係る車両用電源装置の実施の形態の概略構成を示すブロック図である。It is a block diagram which shows schematic structure of embodiment of the vehicle power supply device which concerns on this invention. 本発明に係る車両用電源装置の動作例を示すフローチャートである。It is a flowchart which shows the operation example of the power supply device for vehicles which concerns on this invention. 本発明に係る車両用電源装置の動作例を示すフローチャートである。It is a flowchart which shows the operation example of the power supply device for vehicles which concerns on this invention. 本発明に係る車両用電源装置の動作例を示すタイミングチャートである。It is a timing chart which shows the operation example of the power supply device for vehicles concerning the present invention. 本発明に係る車両用電源装置の実施の形態の概略構成を示すブロック図である。It is a block diagram which shows schematic structure of embodiment of the vehicle power supply device which concerns on this invention. 本発明に係る車両用電源装置の動作例を示すフローチャートである。It is a flowchart which shows the operation example of the power supply device for vehicles which concerns on this invention. 本発明に係る車両用電源装置の動作例を示すフローチャートである。It is a flowchart which shows the operation example of the power supply device for vehicles which concerns on this invention. 本発明に係る車両用電源装置の動作例を示すフローチャートである。It is a flowchart which shows the operation example of the power supply device for vehicles which concerns on this invention. 本発明に係る車両用電源装置の動作例を示すフローチャートである。It is a flowchart which shows the operation example of the power supply device for vehicles which concerns on this invention. 本発明に係る車両用電源装置の動作例を示すタイミングチャートである。It is a timing chart which shows the operation example of the power supply device for vehicles concerning the present invention. 従来の車両用電源装置の動作例を示すタイミングチャートである。It is a timing chart which shows the operation example of the conventional vehicle power supply device.

符号の説明Explanation of symbols

1 オルタネータ
2 レギュレータ
4 車載バッテリ
6 EPS駆動回路
7 モータ
11 リレーボックス
12 充電制御ECU
13 制御部(直流加熱手段、パルス通電加熱手段)
14 電圧検出手段
16,17 FET(直流加熱手段、パルス通電加熱手段)
18,19 温度検出器(温度検出手段)
SW2,SW3 スイッチ
DESCRIPTION OF SYMBOLS 1 Alternator 2 Regulator 4 Vehicle-mounted battery 6 EPS drive circuit 7 Motor 11 Relay box 12 Charging control ECU
13 Control unit (DC heating means, pulse current heating means)
14 Voltage detection means 16, 17 FET (DC heating means, pulse current heating means)
18, 19 Temperature detector (temperature detection means)
SW2, SW3 switch

Claims (3)

加熱器に電力を供給する車載バッテリと、該車載バッテリの入出力電圧を検出する電圧検出手段と、前記加熱器の温度を検出する温度検出手段と、前記加熱器がオンされたときに、前記温度検出手段が検出した温度が所定温度になる迄、前記加熱器を直流電力により加熱する直流加熱手段とを備えた車両用電源装置において、
前記温度検出手段が検出した温度が所定温度に達した後は、前記加熱器を周期的なパルス電流により加熱するパルス通電加熱手段と、前記電圧検出手段が検出した電圧値が所定電圧値より低いか否かを判定する手段と、該手段が所定電圧値より低いと判定しているときは、前記直流加熱手段又はパルス通電加熱手段の動作を禁止する手段とを備えることを特徴とする車両用電源装置。
An in-vehicle battery for supplying electric power to the heater, voltage detection means for detecting an input / output voltage of the in-vehicle battery, temperature detection means for detecting the temperature of the heater, and when the heater is turned on, In the vehicular power supply apparatus comprising the DC heating means for heating the heater with DC power until the temperature detected by the temperature detection means reaches a predetermined temperature,
After the temperature detected by the temperature detection means reaches a predetermined temperature, pulse energization heating means for heating the heater with a periodic pulse current, and the voltage value detected by the voltage detection means is lower than the predetermined voltage value And a means for prohibiting the operation of the direct current heating means or the pulse current heating means when the means is determined to be lower than a predetermined voltage value. Power supply.
複数の加熱器に電力を供給する車載バッテリと、該車載バッテリの入出力電圧を検出する電圧検出手段と、前記加熱器の各温度を検出する各温度検出手段と、前記加熱器がオンされたときに、前記温度検出手段が検出した各温度が各所定温度になる迄、前記加熱器を直流電力により加熱する各直流加熱手段とを備えた車両用電源装置において、
前記温度検出手段が検出した温度が所定温度に達した後は、前記加熱器を周期的なパルス電流により加熱する各パルス通電加熱手段と、前記電圧検出手段が検出した電圧値が所定電圧値より低いか否かを判定する手段と、該手段が所定電圧値より低いと判定しているときは、前記直流加熱手段又はパルス通電加熱手段の各動作を禁止する手段とを備え、複数の前記パルス通電加熱手段が作動しているときは、各パルス通電加熱手段の通電期間が重複しないように構成してあることを特徴とする車両用電源装置。
An in-vehicle battery for supplying power to a plurality of heaters, a voltage detection means for detecting an input / output voltage of the in-vehicle battery, each temperature detection means for detecting each temperature of the heater, and the heater is turned on In each case, the vehicle power supply device comprising: each DC heating means for heating the heater with DC power until each temperature detected by the temperature detection means reaches each predetermined temperature.
After the temperature detected by the temperature detection means reaches a predetermined temperature, each pulse energization heating means for heating the heater with a periodic pulse current, and the voltage value detected by the voltage detection means is greater than the predetermined voltage value. Means for determining whether or not the voltage is lower, and means for prohibiting each operation of the direct current heating means or the pulse current heating means when the means is determined to be lower than a predetermined voltage value, and a plurality of the pulses The vehicle power supply device is configured so that the energization periods of the pulse energization heating means do not overlap when the energization heating means is operating.
前記パルス通電加熱手段は、前記温度検出手段が検出した温度に基づくPWM(Pulse Width Modulation)制御によるパルス電流により、前記加熱器を加熱するように構成してある請求項1又は2記載の車両用電源装置。   3. The vehicle according to claim 1, wherein the pulse energization heating unit is configured to heat the heater by a pulse current by PWM (Pulse Width Modulation) control based on the temperature detected by the temperature detection unit. Power supply.
JP2007206771A 2007-08-08 2007-08-08 Power supply device for vehicle Pending JP2009040191A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102514536A (en) * 2011-12-27 2012-06-27 昌辉汽车电气***(安徽)有限公司 Vehicle defrosting control method and system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0726945A (en) * 1993-06-29 1995-01-27 Toyota Motor Corp Electrification heating type catalyst converter
JP2000514674A (en) * 1996-07-09 2000-11-07 コングスバリ オートモチーブ アーベー How to heat the sheet
JP2006131048A (en) * 2004-11-04 2006-05-25 Honda Motor Co Ltd Vehicular headlight lighting control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0726945A (en) * 1993-06-29 1995-01-27 Toyota Motor Corp Electrification heating type catalyst converter
JP2000514674A (en) * 1996-07-09 2000-11-07 コングスバリ オートモチーブ アーベー How to heat the sheet
JP2006131048A (en) * 2004-11-04 2006-05-25 Honda Motor Co Ltd Vehicular headlight lighting control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102514536A (en) * 2011-12-27 2012-06-27 昌辉汽车电气***(安徽)有限公司 Vehicle defrosting control method and system

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