JPH09219279A - Control method for battery heating device - Google Patents
Control method for battery heating deviceInfo
- Publication number
- JPH09219279A JPH09219279A JP5995696A JP5995696A JPH09219279A JP H09219279 A JPH09219279 A JP H09219279A JP 5995696 A JP5995696 A JP 5995696A JP 5995696 A JP5995696 A JP 5995696A JP H09219279 A JPH09219279 A JP H09219279A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- temperature
- heating element
- heat
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Automation & Control Theory (AREA)
- Control Of Resistance Heating (AREA)
- Resistance Heating (AREA)
- Thermistors And Varistors (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、バッテリーが寒冷地に
おいて能力低下を起こすことを防止するバッテリー加熱
装置の制御方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of controlling a battery heating device which prevents the battery from deteriorating in cold regions.
【0002】寒冷地においては、例えば自動車に搭載さ
れたバッテリーのバッテリー液が約−10℃程度になる
と電気容量の低下が起こって使用できなくなる。従来、
この能力低下防止対策として、バッテリーの外表面をウ
レタンのような断熱保温材で被覆する方法やバッテリー
容量を大きくする方法(例えば、排気量2000ccク
ラスの自動車の場合、通常50Aのバッテリーが使用さ
れるが、寒冷地用としては60Aのバッテリーが使用さ
れる)等が知られている。[0002] In cold regions, for example, when the battery fluid of a battery mounted on an automobile reaches about -10 ° C, the electric capacity of the battery decreases and it becomes unusable. Conventionally,
As a measure to prevent this decrease in capacity, a method of coating the outer surface of the battery with a heat insulating heat insulating material such as urethane or a method of increasing the battery capacity (for example, in the case of a 2000 cc class car, a battery of 50 A is usually used. However, a 60A battery is used for cold climates).
【0003】[0003]
【発明が解決しようとする課題】しかし、これらの対策
はバッテリーの容量低下防止方法の抜本的な対策ではな
いため、例えば気温が−20℃あるいは−30℃という
ような極寒冷地においてはこれらの対策はあまり役に立
たない。したがって、このような場合、バッテリーを積
極的に加熱してバッテリー液の温度低下を防止すること
が考えられる。However, these measures are not drastic measures for the battery capacity reduction prevention method, and therefore, in extreme cold regions where the temperature is -20 ° C or -30 ° C, for example. The measures are not very useful. Therefore, in such a case, it is considered that the battery is actively heated to prevent the temperature of the battery liquid from decreasing.
【0004】この方法としては一般的にはNi−Crや
Fe−Ni−Cr等の抵抗発熱線あるいはこれらの合金
膜のような発熱抵抗体に通電しその発熱によってその温
度低下を防止する方法が考えられる。しかし、この場
合、温度に対する何等かの制御手段がない限り消費電力
が極めて大きくなる欠点がある。自動車用のバッテリー
の場合、バッテリー加熱のためそのバッテリーの電力を
使用しなければならないので、加熱のための電力を極力
抑える必要がある。As this method, generally, a resistance heating wire such as Ni-Cr or Fe-Ni-Cr or a heating resistor such as an alloy film thereof is energized to prevent the temperature from being lowered due to the generated heat. Conceivable. However, in this case, there is a drawback that the power consumption becomes extremely large unless there is any control means for the temperature. In the case of an automobile battery, the electric power of the battery must be used for heating the battery, so the electric power for heating must be suppressed as much as possible.
【0005】本発明者等は、上記の目的を達成するため
先に特許出願した。(出願日平成8年1月5日、整理番
号P9601−071) これは熱伝導性のよい金属、セラミックス、樹脂等の放
熱板にセラミックPTC発熱体を付着させた面状発熱体
を用いバッテリーを加熱するものであった。また、続い
て先に特許出願した。(出願日平成8年2月2日、整理
番号P9602−072) これはフレキシブル基板に樹脂系PTC発熱体ペースト
を塗布した面状発熱体を用いバッテリーを加熱するもの
であった。The present inventors have previously filed a patent application in order to achieve the above object. (Filing date: Jan. 5, 1996, reference number P9601-071) This is a battery using a planar heating element in which a ceramic PTC heating element is attached to a heat dissipation plate made of metal, ceramics, resin or the like having good thermal conductivity. It was something to heat. Also, subsequently applied for a patent. (Filing date: February 2, 1996, reference number P9602-072) This is for heating a battery using a planar heating element in which a resin-based PTC heating element paste is applied to a flexible substrate.
【0006】PTC発熱体は、一定電圧を印加すると初
期抵抗に応じた電流が流れ自己発熱により温度が上昇す
るが、キューリー温度に達すると急激に抵抗が増加して
電流も急激に減少する性質をもつ。したがって、上記の
ようなPTC発熱体を用いると自己制御機能をもつので
外気温度の上昇にともない消費電力が減少する。よっ
て、Ni−CrやFe−Ni−Cr等の抵抗発熱体と比
較すればバッテリーの消費電力を小さくすることができ
る。When a constant voltage is applied to the PTC heating element, a current flows according to the initial resistance and the temperature rises due to self-heating, but when the Curie temperature is reached, the resistance rapidly increases and the current also sharply decreases. Hold. Therefore, when the PTC heating element as described above is used, it has a self-control function, so that the power consumption decreases as the outside air temperature rises. Therefore, the power consumption of the battery can be reduced as compared with a resistance heating element such as Ni-Cr or Fe-Ni-Cr.
【0007】しかし、前出願の特許願においては、セラ
ミックPTC発熱体および樹脂系PTC発熱体ともに一
般的に使用されるキューリー温度は約40〜200℃で
ある。キューリー温度40℃以下のPTC発熱体を製作
することはできなくはないが技術的に難しいので製造コ
ストが非常に高価になる。したがって、バツテリーの液
温を0±10℃に保ちたい場合、例えばキューリー温度
40℃のPTC発熱体を使用すると、0±10℃と40
℃との間の温度差に相当する分だけバッテリーの消費電
力が無駄になる。本発明は、この無駄を省きさらに消費
電力を少なくすることを目的とする。したがって、本発
明は前出願の二発明の改良に関する。However, in the patent application of the previous application, the Curie temperature generally used for both the ceramic PTC heating element and the resin-based PTC heating element is about 40 to 200 ° C. It is not impossible to manufacture a PTC heating element having a Curie temperature of 40 ° C. or less, but it is technically difficult and the manufacturing cost becomes very high. Therefore, if you want to keep the liquid temperature of the battery at 0 ± 10 ° C, for example, if you use a PTC heating element with a Curie temperature of 40 ° C, it will be 0 ± 10 ° C and 40 ° C.
The power consumption of the battery is wasted by the amount corresponding to the temperature difference between the temperature and the temperature. An object of the present invention is to reduce this waste and further reduce power consumption. Therefore, the present invention relates to improvements of the two inventions of the previous application.
【0008】[0008]
【課題を解決するための手段】本発明は、バッテリーの
外周に、該バッテリーを電源とする発熱体と感熱素子と
を含む制御回路を設置し、該感熱素子に発生する電圧変
化を感知して、上記発熱体の供給電流を制御するバッテ
リー加熱装置の制御方法である。本発明の発熱体はセラ
ミックPTC発熱体あるいは樹脂系フレキシブルPTC
発熱体であり、感熱素子はNTCサーミスタあるいはP
TCサーミスタである。SUMMARY OF THE INVENTION According to the present invention, a control circuit including a heat generating element using a battery as a power source and a heat sensitive element is installed on the outer periphery of a battery, and a voltage change generated in the heat sensitive element is sensed. A method for controlling a battery heating device for controlling the supply current of the heating element. The heating element of the present invention is a ceramic PTC heating element or a resin-based flexible PTC.
It is a heating element, and the heat-sensitive element is an NTC thermistor or P
It is a TC thermistor.
【0009】本発明は、バッテリーの温度によって該バ
ッテリーに接触する感温素子の内部抵抗が定まり、上記
バッテリーの温度変化に順応して該感熱素子に流れる電
流が変化するのでこの電流の変化を電圧変化で取り出
し、上記感熱素子の両端の電圧が規定の電圧より下がれ
ば(または上がれば)、上記発熱体に流れる電流を停止
させるものである。また、上記感熱素子の両端の電圧が
規定の電圧より上がれば(または下がれば)、再度該発
熱体に電流を供給し上記バッテリーを加熱する。これら
の繰り返しによりバッテリーの液温を一定温度に保持す
ることができる。According to the present invention, the temperature of the battery determines the internal resistance of the temperature sensitive element contacting the battery, and the current flowing through the heat sensitive element changes in accordance with the temperature change of the battery. The change is taken out, and when the voltage across the heat sensitive element falls below (or rises above) the specified voltage, the current flowing through the heating element is stopped. When the voltage across the heat-sensitive element rises (or falls) above the specified voltage, current is supplied again to the heating element to heat the battery. By repeating these steps, the liquid temperature of the battery can be maintained at a constant temperature.
【0010】本発明においては、感熱素子をバッテリー
の外周に密接するセラミックPTC発熱体を付着した放
熱板あるいは樹脂系PTC発熱体を塗布したフレキシブ
ル基板に密着して取り付ける。さらに、バッテリー、発
熱体および感熱素子を含む制御回路全体を適宜な断熱保
温材で包囲する。In the present invention, the heat-sensitive element is attached in close contact with a heat radiating plate having a ceramic PTC heating element adhered to the outer periphery of the battery or a flexible substrate coated with a resin PTC heating element. Further, the entire control circuit including the battery, the heating element and the heat sensitive element is surrounded by an appropriate heat insulation material.
【0011】バッテリー加熱装置の制御回路は図1に示
すように、感熱素子と固定抵抗を直列に接続し、両端か
ら該バッテリーの電圧を印加すれば、感熱素子に発生す
る電圧は、該バッテリーおよびバッテリーに密着する放
熱板あるいはフレキシブル基板の温度に依存して変化す
る。As shown in FIG. 1, the control circuit of the battery heating device has a thermosensitive element and a fixed resistor connected in series, and if the voltage of the battery is applied from both ends, the voltage generated in the thermosensitive element is It changes depending on the temperature of the heat sink or flexible board that is in close contact with the battery.
【0012】感熱素子に発生する電圧を取り出し、電圧
比較器の一方の入力とする。該電圧比較器の他方の入力
は該バッテリーから分圧した規定電圧を入力する。電圧
比較器の出力は保護抵抗を介して出力トランジスタのベ
ースに接続され、負荷となる発熱体の一端は該出力トラ
ンジスタのエミッタまたはコレクタに接続され、他端は
バッテリーの負極または正極に接続される。上記出力ト
ランジスタはNPN型またはPNP型のいずれでもよ
い。The voltage generated in the heat sensitive element is taken out and used as one input of the voltage comparator. The other input of the voltage comparator receives the specified voltage divided from the battery. The output of the voltage comparator is connected to the base of the output transistor through a protection resistor, one end of the heating element serving as a load is connected to the emitter or collector of the output transistor, and the other end is connected to the negative or positive electrode of the battery. . The output transistor may be either NPN type or PNP type.
【0013】[0013]
【実施例】図1に示すような本発明に係るバッテリー加
熱装置の制御回路を作成した。発熱体にはセラミックP
TC発熱体を使用し、感熱素子にNTCサーミスタを使
用した。また、セラミックPTC発熱体のキューリー温
度を37℃とし、電源は12Vのバッテリーを使用し
た。EXAMPLE A control circuit for a battery heating apparatus according to the present invention as shown in FIG. 1 was prepared. Ceramic P for the heating element
A TC heating element was used and an NTC thermistor was used for the heat sensitive element. Further, the Curie temperature of the ceramic PTC heating element was set to 37 ° C., and a 12 V battery was used as a power source.
【0014】図1において、R1=R2=R3=15K
Ω、R4=R5=100KΩ、R6=1KΩとし、NT
Cサーミスタの25℃における抵抗が10KΩ(B定数
3170゜K)、セラミックPTC発熱体の25℃にお
ける抵抗が24Ωのものを使用した。In FIG. 1, R1 = R2 = R3 = 15K
Ω, R4 = R5 = 100KΩ, R6 = 1KΩ, NT
A C thermistor having a resistance at 25 ° C. of 10 KΩ (B constant of 3170 ° K) and a ceramic PTC heating element having a resistance at 25 ° C. of 24 Ω were used.
【0015】図2は、外気温度とバッテリーの加熱に要
する該バッテリーの平均消費電力の関係を示す。点線
(C1)は前出願のセラミックPTC発熱体のみの場合
であり、実線(C2)は本発明になる制御方法とセラミ
ックPTC発熱体とを用いた場合である。図2から明か
なように、本発明によれば前出願の場合より消費電力を
著しく小さくすることができる。FIG. 2 shows the relationship between the outside air temperature and the average power consumption of the battery required to heat the battery. The dotted line (C1) shows the case of only the ceramic PTC heating element of the previous application, and the solid line (C2) shows the case of using the control method according to the present invention and the ceramic PTC heating element. As is apparent from FIG. 2, according to the present invention, the power consumption can be significantly reduced as compared with the case of the previous application.
【0016】図3は、本発明になる制御方法を用いた場
合の該バッテリーのバッテリー液温と外気温度の関係を
示す。FIG. 3 shows the relationship between the battery liquid temperature of the battery and the outside air temperature when the control method according to the present invention is used.
【0017】本実施例においては、発熱体としてセラミ
ックPTC発熱体を用いたが、これに限定されるもので
はなく、樹脂系PTC発熱体を用いてもよいことは言う
までもない。In this embodiment, the ceramic PTC heating element is used as the heating element, but it is not limited to this, and it goes without saying that a resin PTC heating element may be used.
【0018】[0018]
【発明の効果】本発明によれば、上記のようなPTC発
熱体と感温素子を用いた制御方法であるので、前出願の
バッテリー加熱装置よりも外気温度が−30〜15℃の
範囲において比較しても15〜85%の消費電力を節約
することができ、極寒冷地においても極めて少ない消費
電力でバッテリー液温を一定温度以上に保ち、バッテリ
ーの電気容量低下を防止するバッテリー加熱装置を提供
できるものである。EFFECTS OF THE INVENTION According to the present invention, since the control method using the PTC heating element and the temperature sensitive element as described above, the outside air temperature is in the range of −30 to 15 ° C. as compared with the battery heating device of the previous application. Even if compared, it is possible to save 15-85% of power consumption, and even in extremely cold regions, a battery heating device that keeps the battery liquid temperature above a certain temperature with extremely low power consumption and prevents the battery's electric capacity from decreasing. Can be provided.
【図1】本発明になるバッテリー加熱装置の制御方法に
用いる回路図の一例である。FIG. 1 is an example of a circuit diagram used in a method for controlling a battery heating device according to the present invention.
【図2】外気温度とバッテリーの加熱に要する該バッテ
リーの平均消費電力を示す図である。FIG. 2 is a diagram showing an outside air temperature and an average power consumption of the battery required for heating the battery.
【図3】本発明になる制御方法を用いた場合の該バッテ
リーのバッテリー液温と外気温度の関係を示す図であ
る。FIG. 3 is a diagram showing the relationship between the battery liquid temperature and the outside air temperature of the battery when the control method according to the present invention is used.
R1,R2,R3,R4,R5,R6 固定抵抗 TH NTCサーミスタ A 電圧比較器 Q 出力トランジスタ PTC PTC発熱体 B バッテリー R1, R2, R3, R4, R5, R6 Fixed resistance TH NTC thermistor A Voltage comparator Q Output transistor PTC PTC Heating element B Battery
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成8年4月12日[Submission date] April 12, 1996
【手続補正1】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】0002[Name of item to be corrected] 0002
【補正方法】追加[Correction method] Added
【補正内容】[Correction contents]
【0002】 [0002]
【従来の技術】 寒冷地においては、例えば自動車に搭載
されたバッテリーのバッテリー液が約−10℃程度にな
ると電気容量の低下が起こって使用できなくなる。従
来、この能力低下防止対策として、バッテリーの外表面
をウレタンのような断熱保温材で被覆する方法やバッテ
リー容量を大きくする方法(例えば、排気量2000c
cクラスの自動車の場合、通常50Aのバッテリーが使
用されるが、寒冷地用としては60Aのバッテリーが使
用される)等が知られている。 2. Description of the Related Art In cold regions, for example, when the battery fluid of a battery mounted on an automobile reaches about -10 ° C., the electric capacity of the battery decreases and it becomes unusable. Conventionally, as a measure for preventing the deterioration of the capacity, a method of coating the outer surface of the battery with a heat insulating material such as urethane or a method of increasing the battery capacity (for example, displacement 2000c
In the case of a c-class automobile, a battery of 50 A is usually used, but a battery of 60 A is used for cold climates).
Claims (2)
源とする発熱体と感熱素子とを含む制御回路を設置し、
該感熱素子に発生する電圧変化を感知して、上記発熱体
の供給電流を制御することを特徴とするバッテリー加熱
装置の制御方法。1. A control circuit including a heat-generating element and a heat-sensitive element, which are powered by the battery, is installed on the outer periphery of the battery,
A method for controlling a battery heating device, comprising controlling a supply current of the heating element by sensing a voltage change generated in the heat sensitive element.
は樹脂系フレキシブルPTC発熱体とし、感熱素子をN
TCサーミスタあるいはPTCサーミスタとすることを
特徴とする請求項1のバッテリー加熱装置の制御方法。2. The heating element is a ceramic PTC heating element or a resin flexible PTC heating element, and the heat-sensitive element is N
The method for controlling a battery heating device according to claim 1, wherein the method is a TC thermistor or a PTC thermistor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5995696A JPH09219279A (en) | 1996-02-09 | 1996-02-09 | Control method for battery heating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5995696A JPH09219279A (en) | 1996-02-09 | 1996-02-09 | Control method for battery heating device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09219279A true JPH09219279A (en) | 1997-08-19 |
Family
ID=13128122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5995696A Pending JPH09219279A (en) | 1996-02-09 | 1996-02-09 | Control method for battery heating device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09219279A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009118729A (en) * | 2007-10-17 | 2009-05-28 | Denso Corp | Heating device of electrical storage means for vehicle |
JP2017059459A (en) * | 2015-09-18 | 2017-03-23 | 株式会社村田製作所 | Constant-temperature heating device, toy, game machine, and tableware |
US9991575B2 (en) | 2012-06-27 | 2018-06-05 | Semiconductor Energy Laboratory Co., Ltd. | Power storage unit and solar power generation unit |
CN111211361A (en) * | 2020-01-07 | 2020-05-29 | 福建科立讯通信有限公司 | Circuit for improving low-temperature performance of common battery |
-
1996
- 1996-02-09 JP JP5995696A patent/JPH09219279A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009118729A (en) * | 2007-10-17 | 2009-05-28 | Denso Corp | Heating device of electrical storage means for vehicle |
US9991575B2 (en) | 2012-06-27 | 2018-06-05 | Semiconductor Energy Laboratory Co., Ltd. | Power storage unit and solar power generation unit |
US10797367B2 (en) | 2012-06-27 | 2020-10-06 | Semiconductor Energy Laboratory Co., Ltd. | Power storage unit and solar power generation unit |
US10978757B2 (en) | 2012-06-27 | 2021-04-13 | Semiconductor Energy Laboratory Co., Ltd. | Power storage unit and solar power generation unit |
US11563244B2 (en) | 2012-06-27 | 2023-01-24 | Semiconductor Energy Laboratory Co., Ltd. | Power storage unit and solar power generation unit |
JP2017059459A (en) * | 2015-09-18 | 2017-03-23 | 株式会社村田製作所 | Constant-temperature heating device, toy, game machine, and tableware |
CN111211361A (en) * | 2020-01-07 | 2020-05-29 | 福建科立讯通信有限公司 | Circuit for improving low-temperature performance of common battery |
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