JP2008300114A - Ptc heater control device - Google Patents

Ptc heater control device Download PDF

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JP2008300114A
JP2008300114A JP2007143258A JP2007143258A JP2008300114A JP 2008300114 A JP2008300114 A JP 2008300114A JP 2007143258 A JP2007143258 A JP 2007143258A JP 2007143258 A JP2007143258 A JP 2007143258A JP 2008300114 A JP2008300114 A JP 2008300114A
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temperature
ptc heater
voltage
ptc
unit
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JP5130786B2 (en
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Hideyo Yuno
秀世 湯野
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Panasonic Corp
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Panasonic Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a comfortable PTC heater control device small in rise time capable of preventing temperature change from being felt when the temperature is stabilized. <P>SOLUTION: This PTC heater control device is provided with a current detection part 2, a temperature setting part 3, a control part 4, a voltage varying part 5, and a power-on/off part 6. The control part 4 has PTC characteristic data, detects a supply power voltage, calculates the temperature of a PTC heater from a current value detected by the current detection part 2, the detected supply power voltage, and the PTC characteristic data, calculates a deviation from the temperature setting of the temperature setting part, and variably controls the voltage of the PTC heater to maximize the rising speed while suppressing overshoot of the temperature of the PTC heater in rising, whereby the voltage of the PTC heater is increased and the rise time is reduced without depending on the supply power voltage. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は暖房などの熱源として用いることのできるＰＴＣヒータの制御装置に関するものである。   The present invention relates to a control device for a PTC heater that can be used as a heat source for heating or the like.

従来、この種のＰＴＣヒータ制御装置は、供給電圧の通電オン／オフ時間の割合を変えてヒータ温度を制御するようにしている。   Conventionally, this type of PTC heater control device controls the heater temperature by changing the ratio of the energization on / off time of the supply voltage.

図５は、前記従来のＰＴＣヒータ制御装置を示すもので、電流検出部５１と、温度設定部５２と、この温度設定部５２で設定された温度とＰＴＣヒータ５３の温度との偏差を演算し、通電のオン／オフ時間を制御するコントロール部５４と、電源オン／オフ部５５から構成されている。   FIG. 5 shows the conventional PTC heater control device, which calculates a current detection unit 51, a temperature setting unit 52, and a deviation between the temperature set by the temperature setting unit 52 and the temperature of the PTC heater 53. The control unit 54 controls the on / off time of energization, and the power on / off unit 55.

なお、５６は電源、５７は電源スイッチを示す（例えば、特許文献１参照）。
特開２００６−１８５７６６号公報 Reference numeral 56 denotes a power source, and 57 denotes a power switch (see, for example, Patent Document 1).
JP 2006-185766 A

しかしながら、前記従来の構成では、供給電圧の通電オン／オフ時間の割合を変えてヒータ温度を制御しているので、供給電圧に依存した立上がり時間となり、立上がり時間を速くできず、また、通電オフ時に温度が下降しているのを感じるために、例えば暖房用熱源使用感が悪いという課題を有していた。   However, in the conventional configuration, since the heater temperature is controlled by changing the ratio of the energization on / off time of the supply voltage, the rise time depends on the supply voltage, the rise time cannot be increased, and the energization is off. In order to feel that the temperature is sometimes lowered, for example, there is a problem that the feeling of using the heating heat source is bad.

本発明は、前記従来の課題を解決するもので、立上がり時間が速く、温度安定時の温度変化を感じない快適なＰＴＣヒータ制御装置を提供することを目的とする。   SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a comfortable PTC heater control device that has a fast rise time and does not feel a temperature change when the temperature is stable.

前記従来の課題を解決するために、本発明のＰＴＣヒータ制御装置は、ＰＴＣヒータの電流を検出する電流検出部と、前記ＰＴＣヒータの温度設定を行う温度設定部と、ＰＴＣヒータの温度を制御するコントロール部と、ＰＴＣヒータの電圧を可変する電圧可変部と、ＰＴＣヒータの電圧を入／切する電源オン／オフ部とを備え、前記コントロール部は温度と抵抗値の関係を示すＰＴＣ特性データを有し、供給電源電圧を検出して、前記電流検出部で検出した電流値、検出供給電源電圧、ＰＴＣ特性データからＰＴＣヒータの温度を算出し、前記温度設定部の温度設定との偏差を演算し、立上がり時のヒータ温度のオーバーシュートを抑えつつ立上がりが最速となるようＰＴＣヒータの電圧を可変制御するものである。   In order to solve the conventional problems, a PTC heater control device according to the present invention controls a current detection unit for detecting a current of a PTC heater, a temperature setting unit for setting the temperature of the PTC heater, and a temperature of the PTC heater. PTC characteristic data indicating a relationship between temperature and resistance value, a control section for controlling, a voltage variable section for varying the voltage of the PTC heater, and a power on / off section for turning on / off the voltage of the PTC heater. The power supply voltage is detected, the temperature of the PTC heater is calculated from the current value detected by the current detection unit, the detected supply power supply voltage, and the PTC characteristic data, and the deviation from the temperature setting of the temperature setting unit is calculated. The voltage of the PTC heater is variably controlled so that the rise is fastest while suppressing overshoot of the heater temperature at the rise.

これによって、供給電源電圧に依存することなくＰＴＣヒータの電圧を昇圧して立上がり時間が速くでき、ＰＴＣヒータの電圧を可変制御して立上がり時のＰＴＣヒータの温度のオーバーシュートを抑え、温度安定時の温度変化を感じない快適感を提供できる。   As a result, the rise time can be increased by boosting the voltage of the PTC heater without depending on the supply voltage, and the PTC heater voltage can be variably controlled to suppress the overshoot of the temperature of the PTC heater at the time of temperature stabilization. It can provide a comfortable feeling without feeling the temperature change.

本発明のＰＴＣヒータ制御装置は、立上がり時間が速く、温度安定時の温度変化を感じない快適感を提供できる。   The PTC heater control device according to the present invention can provide a comfortable feeling that the rise time is fast and the temperature does not change when the temperature is stable.

第１の発明は温度上昇によって抵抗値が上昇し、ある温度に達すると抵抗値が急激に増
加する抵抗温度特性を有するＰＴＣヒータの電流を検出する電流検出部と、前記ＰＴＣヒータの温度設定を行う温度設定部と、ＰＴＣヒータの温度を制御するコントロール部と、ＰＴＣヒータの電圧を可変する電圧可変部と、ＰＴＣヒータの電圧を入／切する電源オン／オフ部とを備え、前記コントロール部は温度と抵抗値の関係を示すＰＴＣ特性データを有し、供給電源電圧を検出して、前記電流検出部で検出した電流値、検出供給電源電圧、ＰＴＣ特性データからＰＴＣヒータの温度を算出し、前記温度設定部の温度設定との偏差を演算し、立上がり時のＰＴＣヒータの温度のオーバーシュートを抑えつつ立上がりが最速となるようＰＴＣヒータの電圧を可変制御することにより、供給電源電圧に依存することなくＰＴＣヒータの電圧を昇圧して立上がり時間が速くでき、ＰＴＣヒータの電圧を可変制御して立上がり時のＰＴＣヒータの温度のオーバーシュートを抑え、温度安定時の温度変化を感じない快適感を提供できる。 According to a first aspect of the present invention, there is provided a current detection unit for detecting a current of a PTC heater having a resistance temperature characteristic in which a resistance value increases due to a temperature rise, and the resistance value rapidly increases when a certain temperature is reached, and a temperature setting of the PTC heater. A temperature setting unit for controlling, a control unit for controlling the temperature of the PTC heater, a voltage variable unit for varying the voltage of the PTC heater, and a power on / off unit for turning on / off the voltage of the PTC heater, Has PTC characteristic data indicating the relationship between temperature and resistance value, detects the power supply voltage, and calculates the temperature of the PTC heater from the current value detected by the current detector, the detected power supply voltage, and the PTC characteristic data. The deviation from the temperature setting of the temperature setting unit is calculated, and the electric power of the PTC heater is set so that the rise becomes the fastest while suppressing the overshoot of the temperature of the PTC heater at the rise. By variably controlling the PTC heater voltage without depending on the supply power supply voltage, the rise time can be shortened, and the PTC heater voltage can be variably controlled to suppress the overshoot of the temperature of the PTC heater at the rise time. Can provide a comfortable feeling without temperature change when temperature is stable.

第２の発明は、特に、第１の発明のコントロール部は通電開始時の電流値から算出した負荷温度に応じて温度設定値を自動補正することにより、例えば、暖房用熱源として用いる場合は、快適性を維持しつつ省エネできたり、コントロール部が採暖者体型と立上がり速度および安定温度の相関データを有し、通電開始時の電流値と通電して所定時間経過後の電流値より求めた温度上昇カーブから算出した体型に応じて温度設定値を自動補正することにより、温度のばらつきを抑えることができる。   In the second aspect of the invention, in particular, when the control unit of the first aspect of the invention automatically corrects the temperature set value according to the load temperature calculated from the current value at the start of energization, for example, when used as a heating heat source, Energy can be saved while maintaining comfort, and the control unit has correlation data between the body shape of the warmer, the rising speed and the stable temperature, and the temperature obtained from the current value at the start of energization and the current value after elapse of a predetermined time after energization By automatically correcting the temperature setting value according to the body shape calculated from the ascending curve, temperature variations can be suppressed.

第３の発明は、ＰＴＣヒータがシート状に構成されるとともに、暖房に供されるもので、コントロール部は体型と立上がり速度および安定温度の相関データを有し、通電開始時の電流値と通電して所定時間経過後の電流値より求めた温度上昇カーブから算出した採暖者の体型に応じて温度設定値を自動補正することにより、温度のばらつきを抑えることができる。   According to a third aspect of the invention, the PTC heater is configured in a sheet shape and is used for heating. The control unit has correlation data between the body shape, the rising speed and the stable temperature, and the current value at the start of energization and the energization. Then, the temperature variation can be suppressed by automatically correcting the temperature set value according to the body shape of the warmer calculated from the temperature rise curve obtained from the current value after the lapse of a predetermined time.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１において、ＰＴＣ特性による自己温度過昇防止機能も有するシート状ＰＴＣヒータ１の電流を検出する電流センサなどの電流検出部２と、抵抗ボリューム、切換えスイッチなどからの信号により前記ＰＴＣヒータ１の温度設定を行う温度設定部３と、ＰＴＣヒータ１の温度を制御するコントロール部４と、ＰＴＣヒータ１に供給する電圧を可変する電圧可変部５と、ＰＴＣヒータ１に供給する電圧を入／切する電源オン／オフ部６とを備えている。７は電源スイッチ、８は電源を示す。 (Embodiment 1)
In FIG. 1, the current detection unit 2 such as a current sensor that detects the current of the sheet-like PTC heater 1 that also has a self-temperature overheating prevention function based on PTC characteristics, and a signal from a resistance volume, a changeover switch, etc. A temperature setting unit 3 that performs temperature setting, a control unit 4 that controls the temperature of the PTC heater 1, a voltage variable unit 5 that varies a voltage supplied to the PTC heater 1, and a voltage that is supplied to the PTC heater 1 is turned on / off. And a power on / off unit 6. Reference numeral 7 denotes a power switch, and 8 denotes a power source.

以上のように構成されたＰＴＣシート制御装置について、以下その動作、作用を説明する。   About the PTC sheet | seat control apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

図２において、電源スイッチ７を入れると（ＳＴ１）、コントロール部４は電源オン／オフ部６をオンし、供給電源電圧をＰＴＣヒータ１に印加する（ＳＴ２）。   In FIG. 2, when the power switch 7 is turned on (ST1), the control unit 4 turns on the power on / off unit 6 and applies the supply power voltage to the PTC heater 1 (ST2).

その後、コントロール部４は、供給電源電圧を検出し（ＳＴ３）、電流検出部２にて検出した初期ヒータ電流Ｉ１と検出供給電源電圧とＰＴＣ特性データからＰＴＣヒータ１の温度を算出し、温度設定部３の温度設定との偏差を演算し（ＳＴ４）、偏差に応じてＰＴＣヒータ１の温度立上がりが最速となるよう電圧可変部５を制御してＰＴＣヒータ１の電圧を昇圧する（ＳＴ５）。   Thereafter, the control unit 4 detects the supply power supply voltage (ST3), calculates the temperature of the PTC heater 1 from the initial heater current I1, the detected supply power supply voltage and the PTC characteristic data detected by the current detection unit 2, and sets the temperature. The deviation from the temperature setting of the unit 3 is calculated (ST4), and the voltage variable unit 5 is controlled to boost the voltage of the PTC heater 1 according to the deviation so that the temperature rise of the PTC heater 1 becomes the fastest (ST5).

その後、コントロール部４は、一定間隔でヒータ電流Ｉ２を検出し（ＳＴ６）、ＰＴＣヒータ１の温度にオーバーシュートがない限界のしきい値を検出すると（ＳＴ７）、ＰＴ
Ｃヒータ１の（ＳＴ７）電圧を降圧し、次いで、ＰＴＣヒータ１の電圧を可変制御してその温度を安定制御する（ＳＴ８）。 After that, the control unit 4 detects the heater current I2 at regular intervals (ST6), and detects the threshold value at which the temperature of the PTC heater 1 has no overshoot (ST7).
The (ST7) voltage of C heater 1 is stepped down, and then the voltage of PTC heater 1 is variably controlled to stably control its temperature (ST8).

また、図３は前記ＰＴＣヒータ１を自動車のカーシート暖房用に用いた場合で、コントロール部４は初期ヒータ電流Ｉ１の立上がりから一定時間の間の電流値からヒータ温度＝負荷温度を算出し（ＳＴ９）、負荷温度に応じて温度設定値を自動補正する（ＳＴ１０）。   FIG. 3 shows the case where the PTC heater 1 is used for heating a car seat of an automobile, and the control unit 4 calculates heater temperature = load temperature from a current value during a predetermined time from the rise of the initial heater current I1. ST9) The temperature set value is automatically corrected according to the load temperature (ST10).

また図４において、コントロール部５は、初期ヒータ電流Ｉ１と通電して所定時間経過後のヒータ電流Ｉ３より求めた温度上昇カーブと、採断者体型と立上がり速度の相関データからシートに着座している者の体型を算出し、体型と安定温度の相関データから温度設定値を自動補正する（ＳＴ１１〜ＳＴ１４）。   In FIG. 4, the control unit 5 sits on the seat from the temperature rise curve obtained from the heater current I3 energized with the initial heater current I1 and the heater current I3 after a lapse of a predetermined time, and the correlation data of the body shape and the rising speed. The body shape of the person is calculated, and the temperature set value is automatically corrected from the correlation data between the body shape and the stable temperature (ST11 to ST14).

以上のように、本実施の形態においては、ＰＴＣヒータの電流を検出する電流検出部と、前記ＰＴＣヒータの温度設定を行う温度設定部と、ＰＴＣヒータの温度を制御するコントロール部と、ＰＴＣヒータの電圧を可変する電圧可変部と、ＰＴＣヒータの電圧を入／切する電源オン／オフ部とを備え、前記コントロール部は温度と抵抗値の関係を示すＰＴＣ特性データを有し、供給電源電圧を検出して、前記電流検出部で検出した電流値、検出供給電源電圧、ＰＴＣ特性データからヒータ温度を算出し、前記温度設定部の温度設定との偏差を演算し、立上がり時のヒータ温度のオーバーシュートを抑えつつ立上がりが最速となるようＰＴＣヒータの電圧を可変制御することにより、供給電源電圧に依存することなくヒータ電圧を昇圧して立上がり時間が速くでき、ＰＴＣヒータの圧を可変制御して立上がり時のＰＴＣヒータの温度のオーバーシュートを抑え、温度安定時の温度変化を感じない快適感を提供できる。   As described above, in the present embodiment, the current detection unit that detects the current of the PTC heater, the temperature setting unit that sets the temperature of the PTC heater, the control unit that controls the temperature of the PTC heater, and the PTC heater And a power on / off unit for turning on / off the voltage of the PTC heater, and the control unit has PTC characteristic data indicating the relationship between temperature and resistance, and supplies power supply voltage. The heater temperature is calculated from the current value detected by the current detection unit, the detected power supply voltage, and the PTC characteristic data, the deviation from the temperature setting of the temperature setting unit is calculated, and the heater temperature at the rise is calculated. By variably controlling the voltage of the PTC heater so that the rise is the fastest while suppressing overshoot, the heater voltage is boosted without depending on the power supply voltage. Ri time can quickly suppress the overshoot of the temperature of the PTC heater when rising variably controlling the pressure of the PTC heater can provide a comfortable feeling without sense temperature change when the temperature is stable.

なお、温度設定部３は本ＰＴＣヒータ制御装置の上流側（例えば、シートヒータスイッチ部）に設けてもよいものとする。   The temperature setting unit 3 may be provided on the upstream side (for example, the seat heater switch unit) of the present PTC heater control device.

また、本実施の形態では、コントロール部は通電開始時の電流値から算出した室温に応じて温度設定値を自動補正することにより、快適性を維持しつつ省エネできる。   In the present embodiment, the control unit automatically corrects the temperature setting value according to the room temperature calculated from the current value at the start of energization, thereby saving energy while maintaining comfort.

また、本実施の形態では、コントロール部は体型と立上がり速度および安定温度の相関データを有し、通電開始時の電流値と通電して所定時間経過後の電流値より求めた温度上昇カーブから算出した採暖者の体型に応じて温度設定値を自動補正することにより、着座者による安定温度のばらつきを抑えることができる。   Further, in the present embodiment, the control unit has correlation data of the body type, the rising speed and the stable temperature, and is calculated from the current rise value obtained from the current value at the start of energization and the current value after the lapse of a predetermined time after energization. By automatically correcting the temperature setting value according to the body shape of the warmer, the variation of the stable temperature by the seated person can be suppressed.

以上のように、本発明のＰＴＣヒータ制御装置は、立上がり時間が速く、温度安定時の温度変化を感じない快適感を提供できるので、主に車両に用いられるカーシートヒータなどの車両用や暖房器具などの用途にも適用できる。   As described above, the PTC heater control device of the present invention has a fast rise time and can provide a comfortable feeling that does not feel a temperature change when the temperature is stable. It can also be applied to uses such as instruments.

本発明の実施の形態１におけるＰＴＣヒータ制御装置のブロック図Block diagram of a PTC heater control device in Embodiment 1 of the present invention 同ＰＴＣヒータ制御装置のフローチャートFlow chart of the PTC heater control device 同ＰＴＣヒータ制御装置のフローチャートFlow chart of the PTC heater control device 同ＰＴＣヒータ制御装置のフローチャートFlow chart of the PTC heater control device 従来のＰＴＣヒータ制御装置のブロック図Block diagram of a conventional PTC heater control device

符号の説明Explanation of symbols

２ 電流検出部
３ 温度設定部
４ コントロール部
５ 電圧可変部
６ 電源オン／オフ部 2 Current detection unit 3 Temperature setting unit 4 Control unit 5 Voltage variable unit 6 Power ON / OFF unit

Claims (3)

温度上昇によって抵抗値が上昇し、ある温度に達すると抵抗値が急激に増加する抵抗温度特性を有するＰＴＣヒータの電流を検出する電流検出部と、前記ＰＴＣヒータの温度設定を行う温度設定部と、ＰＴＣヒータの温度を制御するコントロール部と、ＰＴＣヒータの電圧を可変する電圧可変部と、ＰＴＣヒータの電圧を入／切する電源オン／オフ部とを備え、前記コントロール部は温度と抵抗値の関係を示すＰＴＣ特性データを有し、供給電源電圧を検出して、前記電流検出部で検出した電流値、検出供給電源電圧、ＰＴＣ特性データからＰＴＣヒータの温度を算出し、前記温度設定部の温度設定との偏差を演算し、立上がり時のＰＴＣヒータの温度のオーバーシュートを抑えつつ立上がりが最速となるようＰＴＣヒータの電圧を可変制御するＰＴＣヒータ制御装置。 A current detection unit that detects a current of a PTC heater having a resistance temperature characteristic in which a resistance value increases due to a temperature rise, and when the temperature reaches a certain temperature, a temperature setting unit that sets a temperature of the PTC heater; A control unit for controlling the temperature of the PTC heater, a voltage variable unit for varying the voltage of the PTC heater, and a power on / off unit for turning on / off the voltage of the PTC heater, the control unit comprising a temperature and a resistance value PTC characteristic data indicating the relationship between the PTC heater, the power supply voltage is detected, the temperature of the PTC heater is calculated from the current value detected by the current detection unit, the detected supply power supply voltage, and the PTC characteristic data, and the temperature setting unit The PTC heater voltage is variably controlled so that the rise is the fastest while suppressing the overshoot of the temperature of the PTC heater at the rise. That PTC heater control unit. コントロール部は通電開始時の電流値から算出した負荷温度に応じて温度設定値を自動補正する請求項１に記載のＰＴＣヒータ制御装置。 The PTC heater control device according to claim 1, wherein the control unit automatically corrects the temperature set value according to the load temperature calculated from the current value at the start of energization. ＰＴＣヒータがシート状に構成されるとともに、暖房に供されるもので、コントロール部は体型と立上がり速度および安定温度の相関データを有し、通電開始時の電流値と通電して所定時間経過後の電流値より求めた温度上昇カーブから算出した採暖者の体型に応じて温度設定値を自動補正する請求項１または２に記載のＰＴＣヒータ制御装置。 The PTC heater is formed in a sheet shape and is used for heating. The control unit has correlation data between the body shape, the rising speed and the stable temperature, and after a predetermined time has passed since the current value was energized with the current value at the start of energization. 3. The PTC heater control device according to claim 1, wherein the temperature set value is automatically corrected according to the body shape of the warmer calculated from the temperature rise curve obtained from the current value.
JP2007143258A 2007-05-30 2007-05-30 PTC heater control device Expired - Fee Related JP5130786B2 (en)

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KR100935118B1 (en) * 2008-09-04 2010-01-06 권순락 Power supply of heater with positive temperature coefficient heating cable
JP2011018494A (en) * 2009-07-08 2011-01-27 Panasonic Corp Seat heater control device
JP2011153746A (en) * 2010-01-26 2011-08-11 Panasonic Electric Works Co Ltd Radiation heating panel system
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JP2021051984A (en) * 2019-09-26 2021-04-01 株式会社オートネットワーク技術研究所 Power supply control device
CN114423644A (en) * 2019-09-26 2022-04-29 株式会社自动网络技术研究所 Power supply control device
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CN114423644B (en) * 2019-09-26 2023-12-26 株式会社自动网络技术研究所 Power supply control device

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