JPH0374142U - - Google Patents
Info
- Publication number
- JPH0374142U JPH0374142U JP13210989U JP13210989U JPH0374142U JP H0374142 U JPH0374142 U JP H0374142U JP 13210989 U JP13210989 U JP 13210989U JP 13210989 U JP13210989 U JP 13210989U JP H0374142 U JPH0374142 U JP H0374142U
- Authority
- JP
- Japan
- Prior art keywords
- battery
- voltage
- reference voltage
- auxiliary device
- intermediate 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
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Protection Of Static Devices (AREA)
Description
第１図は本考案に係る暖房補助装置用バツテリ
の保護回路の概略構成図、第２図はこの保護回路
に使用されたタイオードの温度特性図、第３図は
その保護回路によつて暖房補助装置が作動する温
度領域が広がつた様子を示す図、第４図及び第５
図は従来の保護回路の説明図である。
１……パワーヒータ（暖房補助装置）、２……
バツテリ、４，６……抵抗器、５……可変抵抗器
（抵抗器）、７……オペアンプ（比較手段）、８
……基準電圧電源（基準電圧出力手段）、１０…
…トランジスタ（スイツチング手段）、１１……
リレー（スイツチグ手段）。
Fig. 1 is a schematic configuration diagram of a battery protection circuit for a heating auxiliary device according to the present invention, Fig. 2 is a temperature characteristic diagram of a diode used in this protection circuit, and Fig. 3 is a diagram showing the temperature characteristics of a diode used in this protection circuit. Figures 4 and 5 show how the temperature range in which the device operates has expanded.
The figure is an explanatory diagram of a conventional protection circuit. 1... Power heater (heating auxiliary device), 2...
Battery, 4, 6... Resistor, 5... Variable resistor (resistor), 7... Operational amplifier (comparison means), 8
...Reference voltage power supply (reference voltage output means), 10...
...Transistor (switching means), 11...
Relay (switch means).
Claims (1)
補助装置１へ駆動電力を供給するバツテリ２に、
該バツテリ２の出力電圧を分圧する抵抗器４，５
，６を接続し、当該抵抗器４，５，６に、周囲温
度の低下に応じて順電圧値が所定量上昇するダイ
オード２０を順方向に直列接続し、抵抗器４，５
，６によつて分圧された中間電圧を入力するよう
に一方の入力端子を抵抗器５に接続すると共に、
中間電圧に対して基準となる基準電圧を出力する
基準電圧出力手段８に他方の入力端子を接続し、
中間電圧と基準電圧とを比較して中間電圧が基準
電圧以下になつた場合に出力端子をＯＦＦする比
較手段７に、当該出力端子がＯＦＦした場合に、
前記バツテリ２から前記暖房補助装置１への給電
通路をＯＦＦするスイツチング手段１０，１１を
接続して成る暖房補助装置用バツテリの保護回路
。 A battery 2 that supplies driving power to a heating auxiliary device 1 that assists the heating capacity of an automobile air conditioner;
Resistors 4 and 5 that divide the output voltage of the battery 2
.
, 6, and one input terminal is connected to the resistor 5 so as to input the intermediate voltage divided by the resistors 5 and 6.
The other input terminal is connected to a reference voltage output means 8 that outputs a reference voltage that is a reference for the intermediate voltage,
The comparison means 7 compares the intermediate voltage and the reference voltage and turns off the output terminal when the intermediate voltage becomes lower than the reference voltage.
A protection circuit for a battery for a heating auxiliary device, comprising switching means 10 and 11 for turning off a power supply path from the battery 2 to the heating auxiliary device 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13210989U JPH0374142U (en) | 1989-11-15 | 1989-11-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13210989U JPH0374142U (en) | 1989-11-15 | 1989-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0374142U true JPH0374142U (en) | 1991-07-25 |
Family
ID=31679582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13210989U Pending JPH0374142U (en) | 1989-11-15 | 1989-11-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0374142U (en) |
-
1989
- 1989-11-15 JP JP13210989U patent/JPH0374142U/ja active Pending
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