JPH047652Y2 - - Google Patents
Info
- Publication number
- JPH047652Y2 JPH047652Y2 JP5491186U JP5491186U JPH047652Y2 JP H047652 Y2 JPH047652 Y2 JP H047652Y2 JP 5491186 U JP5491186 U JP 5491186U JP 5491186 U JP5491186 U JP 5491186U JP H047652 Y2 JPH047652 Y2 JP H047652Y2
- Authority
- JP
- Japan
- Prior art keywords
- thermistor
- storage battery
- circuit
- charging
- detection circuit
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 102400000552 Notch 1 intracellular domain Human genes 0.000 description 1
- 101800001628 Notch 1 intracellular domain Proteins 0.000 description 1
Description
【考案の詳細な説明】
〔考案の利用分野〕
本考案は蓄電池の急速充電器に係り、特にサー
ミスタで蓄電池の満充電を検出するようにした方
式の蓄電池の急速充電器の改良に関するものであ
る。[Detailed description of the invention] [Field of application of the invention] The present invention relates to a quick charger for a storage battery, and in particular relates to an improvement of a quick charger for a storage battery that uses a thermistor to detect full charge of the storage battery. .
蓄電池の温度上昇で蓄電池の満充電状態を検出
する方式の急速充電器においては、従来より温度
センサとしてサーミスタが使用されており、第４
図に示す如き回路がジエネラル・エレクトリツ
ク・カンパニー（General Electoric Campany）
発行のNicdバツテリー・アプリケーシヨン・エ
ンジニアリング・ハンドブツク（1975年版）など
で公知となつている。１は急速充電器、２は充電
用電源、３は電池組立体、４は蓄電池、５はサー
ミスタ、６はプラス端子、７はマイナス端子、８
はセンサ端子、１４は制御回路、１６は電流制御
素子である。
In quick chargers that detect the fully charged state of a storage battery based on a temperature rise in the storage battery, a thermistor has traditionally been used as a temperature sensor.
The circuit shown in the diagram is from General Electric Company.
It is well known from publications such as the NICD Battery Application Engineering Handbook (1975 edition). 1 is a quick charger, 2 is a charging power source, 3 is a battery assembly, 4 is a storage battery, 5 is a thermistor, 6 is a positive terminal, 7 is a negative terminal, 8
14 is a sensor terminal, 14 is a control circuit, and 16 is a current control element.
しかしながら、従来技術においては、サーミス
タ５が正特性サーミスタでは、サーミスタ５が短
絡状態になつたとき、また、サーミスタ５が負特
性サーミスタでは、サーミスタ５が開放状態にな
つたとき、蓄電池４が満充電になつても充電停止
せず、蓄電池４が過充電となり、爆発や火災を招
くという危険があつた。 However, in the prior art, when the thermistor 5 is a positive characteristic thermistor, when the thermistor 5 is short-circuited, and when the thermistor 5 is a negative characteristic thermistor, when the thermistor 5 is open, the storage battery 4 is fully charged. Charging did not stop even after the temperature reached 500, and the storage battery 4 became overcharged, posing a risk of explosion or fire.
本考案の目的は、上記した従来技術の欠点をな
くし、サーミスタで蓄電池の満充電を検出するよ
うにした方式の充電器の安全性を高めることがで
きる蓄電池の急速充電器を提供することにある。
The purpose of the present invention is to provide a quick charger for a storage battery that eliminates the drawbacks of the above-mentioned prior art and can improve the safety of a charger that uses a thermistor to detect full charge of the storage battery. .
本考案は、サーミスタの抵抗値は通常連続的に
変化し、短絡あるいは開放状態になると、零ある
いは無限大になることに着目してなされたもの
で、サーミスタの接続検出回路を設け、この接続
検出回路が上記サーミスタが負特性サーミスタで
あるときはそのサーミスタの開放状態を、また、
上記サーミスタが正特性サーミスタであるときは
そのサーミスタの短絡状態を検出したときに電流
制御素子を制御する自己保持特性を有する制御回
路は上記電流制御素子を非導通状態にするように
制御する構成としたことを特徴としている。
The present invention was developed based on the fact that the resistance value of a thermistor normally changes continuously, and becomes zero or infinite when it becomes short-circuited or open. When the circuit is a negative characteristic thermistor, the open state of the thermistor,
When the thermistor is a positive characteristic thermistor, the control circuit having a self-holding characteristic that controls the current control element when a short-circuit state of the thermistor is detected is configured to control the current control element to be in a non-conducting state. It is characterized by what it did.
以下本考案を第１図、第３図に示した実施例お
よび第２図を用いて詳細に説明する。
The present invention will be explained in detail below with reference to the embodiments shown in FIGS. 1 and 3 and FIG. 2.
第１図は本考案の蓄電池の急速充電器の一実施
例を示す構成図である。第１図において、１は急
速充電器で、急速充電器１の入力側には充電用電
源２が接続され、出力側には電池組立体３が接続
される。電池組立体３は、充電する蓄電池４、蓄
電池４の満充電を温度上昇によつて検出するサー
ミスタ５、プラス端子６、マイナス端子７、セン
サ端子８からなり、３個の端子６，７，８によつ
て急速充電器１に接続される。 FIG. 1 is a block diagram showing an embodiment of a quick charger for a storage battery according to the present invention. In FIG. 1, reference numeral 1 denotes a quick charger. A charging power source 2 is connected to the input side of the quick charger 1, and a battery assembly 3 is connected to the output side. The battery assembly 3 includes a storage battery 4 to be charged, a thermistor 5 that detects full charge of the storage battery 4 by temperature rise, a positive terminal 6, a negative terminal 7, and a sensor terminal 8. It is connected to the quick charger 1 by.
急速充電器１は、温度検出回路９、サーミスタ
接続検出回路１３、自己保持特性を有する制御回
路１４、制御回路１４の出力とサーミスタ接続検
出回路１３の出力とのAND回路１５および電流
制御素子１６から構成してある。 The quick charger 1 includes a temperature detection circuit 9, a thermistor connection detection circuit 13, a control circuit 14 having self-holding characteristics, an AND circuit 15 between the output of the control circuit 14 and the output of the thermistor connection detection circuit 13, and a current control element 16. It is configured.
温度検出回路９は、安定化電源１０に接続され
た抵抗１１，１２からなり、サーミスタ５がセン
サ端子８を介して抵抗１１，１２の接続点に接続
される。 The temperature detection circuit 9 includes resistors 11 and 12 connected to a stabilized power source 10, and a thermistor 5 is connected to a connection point between the resistors 11 and 12 via a sensor terminal 8.
第２図は第１図の回路動作説明線図である。サ
ーミスタ５が負特性サーミスタの場合は、第２図
ａに示すように、常温Taで急速充電器１に充電
用電源２と電池組立体３とが接続されると、温度
検出回路９の出力電圧Viは第２図ａ−１において
Vaとなり、自己保持特性を有する制御回路１４
の出力Vp1は、第２図ａ−２におけるａ点、すな
わち、〓Ｈ”レベルになる。また、サーミスタ５
の接続検出回路１３の出力Vp2も第２図ａ−３に
おいて、〓Ｈ”レベルになる。したがつて、
AND回路１５の出力Veは第２図ａ−４における
ａ点、すなわち、〓Ｈ”レベルになり、電流制御
素子１６は導通状態となり、充電開始を行う。充
電が進行し、蓄電池４の温度が充電停止温度Ta
に達すると、温度検出回路９の出力Viは第２図ａ
−１においてVaとなり、制御回路１４の出力Vp1
は第２図ａ−２においてａ→Ａ→Ｂの経路を経て
〓Ｌ”レベルになり、同様にAND回路１５の出
力Vpは第２図ａ−４においてａ→Ａ→Ｂの経過
を経て〓Ｌ”レベルになり、電流制御素子１６が
非導通状態になつて充電停止となる。そして、充
電停止後、蓄電池４の温度が常温Taまで低下し
ても、制御回路１４の再起動温度Tcは常温Taよ
りも第２図ａ−１に示してあるように十分低い値
に設定してあるので、充電が再開されることはな
い。 FIG. 2 is a diagram illustrating the circuit operation of FIG. 1. If the thermistor 5 is a negative characteristic thermistor, as shown in FIG . The voltage V i is shown in Figure 2 a-1.
V a , and the control circuit 14 has self-holding characteristics.
The output V p1 of the thermistor 5 becomes the point a in Fig. 2 a-2, that is, the 〓H'' level.
The output V p2 of the connection detection circuit 13 also becomes 〓H'' level in Fig. 2 a-3. Therefore,
The output V e of the AND circuit 15 reaches point a in FIG. is the charging stop temperature T a
, the output V i of the temperature detection circuit 9 becomes as shown in Fig. 2a.
-1, it becomes V a , and the output of the control circuit 14 V p1
goes through the path a→A→B in Figure 2 a-2 and becomes 〓L'' level, and similarly, the output V p of the AND circuit 15 goes through the path a → A → B in Figure 2 a-4. 〓L” level, the current control element 16 becomes non-conductive, and charging is stopped. Even if the temperature of the storage battery 4 drops to room temperature T a after charging is stopped, the restart temperature T c of the control circuit 14 is a value sufficiently lower than the room temperature T a as shown in FIG. 2 a-1. Since it is set to , charging will not be restarted.
ここで、サーミスタ５が開放状態になつた場合
の動作について説明する。サーミスタ接続検出回
路１３の動作温度Trは、常温Taよりも十分低く、
かつ、制御回路１４の再起動温度Tcよりも高く
設定してある。すなわち、Tr＞TcかつTr＞Taと
してあるから〔第２図ａ−１参照〕、蓄電池温度
がTrよりも低くなると、温度検出回路９の出力
Viは、サーミスタ接続検出回路１３の動作電圧
Vrを越えるので、サーミスタ接続検出回路１３
の出力Vp2は、第２図ａ−３に示すように〓Ｌ”
レベルになり、AND回路１５の出力Veも〓Ｌ”
レベルになり、充電不能となる。要するに、サー
ミスタ５の開放状態は、蓄電池４の温度が極端に
低下したのと等価であるので、サーミスタ５が開
放状態になると、充電不能になる。 Here, the operation when the thermistor 5 is in an open state will be explained. The operating temperature T r of the thermistor connection detection circuit 13 is sufficiently lower than the room temperature T a .
Moreover, it is set higher than the restart temperature T c of the control circuit 14 . That is, since T r > T c and T r > T a [see Figure 2 a-1], when the storage battery temperature becomes lower than T r , the output of the temperature detection circuit 9
V i is the operating voltage of the thermistor connection detection circuit 13
Since it exceeds V r , the thermistor connection detection circuit 13
The output V p2 of is 〓L'' as shown in Figure 2 a-3.
level, and the output V e of the AND circuit 15 is also 〓L”
level and becomes unable to charge. In short, the open state of the thermistor 5 is equivalent to an extremely low temperature of the storage battery 4, so when the thermistor 5 is in the open state, charging becomes impossible.
第２図ｂはサーミスタ５が正特性サーミスタの
場合の回動動作説明線図である。この場合、負特
性サーミスタの場合と逆の論理でサーミスタ５が
短絡状態になると充電不能になる。 FIG. 2b is a diagram illustrating the rotation operation when the thermistor 5 is a positive characteristic thermistor. In this case, if the thermistor 5 becomes short-circuited due to the logic opposite to that of the negative characteristic thermistor, charging becomes impossible.
第３図は第１図の一実施例を示す回路図で、第
１図と同一部分は同じ符号で示してあり、回路の
詳細については説明を省略する。 FIG. 3 is a circuit diagram showing one embodiment of FIG. 1, in which the same parts as in FIG. 1 are designated by the same reference numerals, and detailed explanation of the circuit will be omitted.
以上説明したように、本考案によれば、サーミ
スタが開放あるいは短絡状態になつたときに充電
不能とすることができるので、蓄電池の過充電に
ともなう爆発や火災を防止することができ、安全
性を高めることができるという効果がある。
As explained above, according to the present invention, it is possible to disable charging when the thermistor becomes open or short-circuited, so it is possible to prevent explosions and fires due to overcharging of the storage battery, thereby increasing safety. It has the effect of increasing the
第１図は本考案の蓄電池の急速充電器の一実施
例を示す構成図、第２図は第１図の回路動作説明
線図、第３図は第１図の一実施例を示す回路図、
第４図は従来の蓄電池の急速充電器の構成図であ
る。
１……急速充電器、２……充電用電源、３……
電池組立体、５……サーミスタ、９……温度検出
回路、１３……サーミスタ接続検出回路、１４…
…制御回路、１５……AND回路、１６……電流
制御素子。
Fig. 1 is a block diagram showing one embodiment of the quick charger for storage batteries of the present invention, Fig. 2 is a diagram explaining the circuit operation of Fig. 1, and Fig. 3 is a circuit diagram showing one embodiment of the quick charger of the storage battery of the present invention. ,
FIG. 4 is a block diagram of a conventional quick charger for storage batteries. 1... Rapid charger, 2... Charging power supply, 3...
Battery assembly, 5... Thermistor, 9... Temperature detection circuit, 13... Thermistor connection detection circuit, 14...
...Control circuit, 15...AND circuit, 16...Current control element.
Claims (1)
電池組立体の前記蓄電池に流れ込む充電電流を制
御する電流制御素子と、該電流制御素子を制御す
る自己保持特性を有する制御回路とを備えた蓄電
池の急速充電器において、前記サーミスタの接続
検出回路を設け、該接続検出回路が前記サーミス
タが負特性サーミスタであるときはそのサーミス
タの開放状態を、また、前記サーミスタが正特性
サーミスタであるときはそのサーミスタの短絡状
態を検出したときに前記制御回路は前記電流制御
素子を非導通状態にするように制御する構成とし
たことを特徴とする蓄電池の急速充電器。 Rapid charging of a storage battery, comprising a current control element that controls a charging current flowing from a charging power source into the storage battery of a battery assembly consisting of a storage battery and a thermistor, and a control circuit having a self-holding characteristic that controls the current control element. A connection detection circuit for the thermistor is provided in the device, and the connection detection circuit detects an open state of the thermistor when the thermistor is a negative characteristic thermistor, and detects a short circuit of the thermistor when the thermistor is a positive characteristic thermistor. A quick charger for a storage battery, characterized in that the control circuit controls the current control element to be in a non-conductive state when a state is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5491186U JPH047652Y2 (en) | 1986-04-11 | 1986-04-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5491186U JPH047652Y2 (en) | 1986-04-11 | 1986-04-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62168752U JPS62168752U (en) | 1987-10-26 |
| JPH047652Y2 true JPH047652Y2 (en) | 1992-02-27 |
Family
ID=30882334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5491186U Expired JPH047652Y2 (en) | 1986-04-11 | 1986-04-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH047652Y2 (en) |
-
1986
- 1986-04-11 JP JP5491186U patent/JPH047652Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62168752U (en) | 1987-10-26 |
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