JPS6316292Y2 - - Google Patents
Info
- Publication number
- JPS6316292Y2 JPS6316292Y2 JP1981027962U JP2796281U JPS6316292Y2 JP S6316292 Y2 JPS6316292 Y2 JP S6316292Y2 JP 1981027962 U JP1981027962 U JP 1981027962U JP 2796281 U JP2796281 U JP 2796281U JP S6316292 Y2 JPS6316292 Y2 JP S6316292Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- storage battery
- charging
- sensing element
- 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
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Description
【考案の詳細な説明】
本考案は充電回路に係り、特に過充電防止機能
を有する被充電蓄電池の表面に蓄電池の充電終了
時を検出する感温素子を設けてある蓄電池組立体
とこの蓄電池組立体に接続する充電器とよりなる
充電回路の改良に関するものである。[Detailed description of the invention] The present invention relates to a charging circuit, and in particular to a storage battery assembly in which a temperature-sensitive element is provided on the surface of the storage battery to be charged, which has an overcharge prevention function and detects the end of charging of the storage battery, and this storage battery assembly. This invention relates to the improvement of a charging circuit consisting of a three-dimensionally connected charger.
蓄電池の急速充電を行う場合、蓄電池の過充電
防止が非常に重要である。過充電防止法の一つに
充電末期の蓄電池表面温度の上昇を蓄電池表面に
取り付けた感温素子により検出し、その検出信号
により充電電流を自動的に制御する方法がある。
以下、この方法を温度センサ方式と呼び、これの
従来技術について第１図を用いて説明する。 When rapidly charging a storage battery, it is very important to prevent overcharging of the storage battery. One method for preventing overcharging is to detect the rise in surface temperature of the storage battery at the end of charging using a temperature sensing element attached to the surface of the storage battery, and automatically control the charging current based on the detection signal.
Hereinafter, this method will be referred to as a temperature sensor method, and the conventional technology thereof will be explained using FIG.
第１図において、１は充電器、２は蓄電池組立
体で、これらを図示のように接続して充電回路を
構成してある。充電器１は直流電源装置３とスイ
ツチング回路４とよりなり、スイツチング回路４
は、過充電防止保持回路５とサイリスタ６ａから
なる制御回路６とより構成してある。また、蓄電
池組立体２は、被充電蓄電池７と被充電蓄電池７
の表面に取り付けた蓄電池の充電終了時を検出す
るサーモスタツトで代表される感温素子８とより
構成してあり、これらが図示のように接続してあ
る。 In FIG. 1, 1 is a charger and 2 is a storage battery assembly, which are connected as shown to form a charging circuit. The charger 1 consists of a DC power supply 3 and a switching circuit 4.
It is composed of an overcharge prevention holding circuit 5 and a control circuit 6 consisting of a thyristor 6a. The storage battery assembly 2 also includes a storage battery 7 to be charged and a storage battery 7 to be charged.
The temperature sensing element 8, represented by a thermostat, detects the end of charging of the storage battery attached to the surface of the battery, and these elements are connected as shown in the figure.
感温素子８は低温においては閉路しているが、
充電終了時のように蓄電池の表面温度が所定温度
T2まで上昇すると、それを検出して開路するよ
うになつている。なお、スイツチング回路４の制
御回路６は、充電末期に蓄電池７の表面温度が
T2以上となり、感温素子８が閉状態から開状態
になると、充電電流を制限し、また、保持回路５
は、制御回路６が働いた後、蓄電池７が再び冷却
され、その表面温度がT2以下となつて感温素子
８が開状態から閉状態になつても、再度充電が開
始されないように制御回路６を開状態に保持する
ように構成してあり、しかも、保持回路５は蓄電
池組立体２と充電器１との接続時に自動的にセツ
トされるようになつている。 Although the temperature sensing element 8 is closed at low temperatures,
The surface temperature of the storage battery is at the specified temperature as at the end of charging.
When the voltage rises to T 2 , it is detected and the circuit is opened. The control circuit 6 of the switching circuit 4 controls the surface temperature of the storage battery 7 at the end of charging.
When T 2 or higher and the temperature sensing element 8 changes from the closed state to the open state, the charging current is limited and the holding circuit 5
After the control circuit 6 operates, the storage battery 7 is cooled down again, its surface temperature drops below T2 , and the temperature sensing element 8 changes from the open state to the closed state, but the control circuit 6 is controlled so that charging does not start again. The circuit 6 is configured to be held open, and the holding circuit 5 is automatically set when the storage battery assembly 2 and the charger 1 are connected.
したがつて、従来の温度センサ方式の充電回路
は、充電開始時に蓄電池７の表面温度がT2以下
の場合には、第２図に示すように、良好な充電特
性が得られ、かつ、過充電が防止される。 Therefore, in the conventional temperature sensor type charging circuit, if the surface temperature of the storage battery 7 is below T2 at the start of charging, as shown in Fig. 2 , good charging characteristics can be obtained and overheating can be achieved. Charging is prevented.
なお、第２図のａ曲線は蓄電池表面温度、ｂ曲
線は充電電流である。 In addition, the a curve of FIG. 2 is the storage battery surface temperature, and the b curve is the charging current.
しかし、蓄電池７が充電式電動工具のように比
較的大電流で連続して使用されるものであつて、
使用した直後に、蓄電池７を充電器２に接続した
ときの蓄電池７の表面温度がT2以上であつて感
温素子８が開路しているときは、蓄電器７が冷却
されてその表面温度がT2以下となつても、それ
が充電完了後、蓄電池７が冷却された場合と同じ
現象として検知されるため、制御回路６は保持回
路５によつて開状態に保持されたままとなり、充
電が開始されることがないという問題を生ずる。
そのため、使用者は蓄電池７の表面温度がT2以
下に冷却されてから充電器１に接続するようにし
なければならないという不便さがあつた。 However, if the storage battery 7 is used continuously at a relatively large current, such as in a rechargeable power tool,
Immediately after use, when the battery 7 is connected to the charger 2, if the surface temperature of the battery 7 is T2 or higher and the temperature sensing element 8 is open, the battery 7 is cooled and its surface temperature increases. Even if the temperature becomes less than T 2 , it is detected as the same phenomenon as when the storage battery 7 is cooled down after charging is completed, so the control circuit 6 remains open by the holding circuit 5, and the charging The problem arises that the process is never started.
Therefore, the user has to inconvenience that the surface temperature of the storage battery 7 must be cooled to below T2 before connecting it to the charger 1.
本考案は上記に鑑みてなされたもので、その目
的とするところは、蓄電池の表面温度が所定値以
上に高いときに充電器に接続しても、蓄電池が冷
却されれば自動的に充電が開始される充電回路を
提供することにある。 The present invention was developed in view of the above, and its purpose is that even if the battery is connected to a charger when the surface temperature of the battery is higher than a predetermined value, charging will start automatically once the battery has cooled down. The object of the present invention is to provide a charging circuit that can be started.
本考案の特徴は、被充電蓄電池に充電終了時を
検出する感温素子のほかに並列に充電開始時を検
出する低温感温素子を接続し、かつ、充電器のコ
ンデンサと抵抗器との並列回路を有する過充電保
持回路の上記抵抗器に直列に上記充電器に蓄電池
組立体を接続したときに開路するスイツチを接続
し、上記低温感温素子は上記過充電防止回路に直
列に接続し、上記過充電防止保持回路が蓄電池組
立体と充電器との接続時でなく上記低温感温素子
が上記蓄電池表面温度の低下によつて閉路したと
きにセツトされるようにした点にある。 The features of this invention are that in addition to the temperature sensing element that detects the end of charging, a low temperature sensing element that detects the start of charging is connected to the storage battery to be charged, and the capacitor and resistor of the charger are connected in parallel. A switch that opens when the storage battery assembly is connected to the charger is connected in series to the resistor of the overcharge holding circuit having the circuit, and the low temperature temperature sensing element is connected in series to the overcharge prevention circuit, The overcharge prevention holding circuit is set not when the storage battery assembly and the charger are connected, but when the low temperature temperature sensitive element is closed due to a decrease in the surface temperature of the storage battery.
以下本考案を第３図に示した実施例および第４
図を用いて詳細に説明する。 The embodiment of the present invention shown in FIG. 3 and the fourth embodiment are as follows.
This will be explained in detail using figures.
第３図は本考案の充電回路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、こ
こでは説明を省略する。第３図においては、被充
電蓄電池７に充電終了時を検出する所定温度T2
で開路する感温素子８のほかに、充電開始時を検
出する温度T2より低い温度T1で開路する低温感
温素子１０を設け、低温感温素子１０を介して充
電器１の過充電防止保持回路５に接続するように
し、また、保持回路５には蓄電池組立体２と充電
器１とをコネクタ９を用いて接続すると開路し、
接続をはずすと閉路するスイツチ１１を図示のよ
うに接続した。 FIG. 3 is a circuit diagram showing an embodiment of the charging circuit of the present invention. The same parts as in FIG. In FIG. 3, the storage battery 7 to be charged is set at a predetermined temperature T 2 at which the end of charging is detected.
In addition to the temperature-sensing element 8, which opens at a temperature T1 lower than the temperature T2 that detects the start of charging, a low-temperature temperature-sensing element 10 is provided, which opens at a temperature T1 lower than the temperature T2 at which charging starts. When the storage battery assembly 2 and the charger 1 are connected to the holding circuit 5 using the connector 9, the circuit is opened.
A switch 11, which closes when disconnected, was connected as shown.
第３図によれば、蓄電池７の表面温度がT1よ
り低いときに充電器１に蓄電池組立体２を接続し
て電源を投入すると、低温感温素子１０が閉路し
ているから、電解コンデンサ５ａを充電するため
の大きな電流がサイリスタ６ａのゲート回路に通
電され、サイリスタ６ａがオン状態となり、充電
が開始される。サイリスタ６ａは、一旦オン状態
になると、ゲートに電圧が印加されなくとも、そ
のままオン状態を保つ性質をもつているため、充
電末期に蓄電池７の表面温度が上昇してT1以上
となつて低温感温素子１０が開路してもそのまま
充電が継続される。そして表面温度がT2以上と
なつて感温素子８が開路すると充電終了となる。
そして、一旦充電が終了すると、蓄電池７が冷却
され、それの表面温度がT1以下となり、感温素
子１０、８がともに閉路しても、電解コンデンサ
５ａがすでに充電されているため、ゲート回路に
大きな電流が流れることはなく、再びサイリスタ
がオン状態となつて充電が開始されることはな
く、従来と同様、第２図に示す特性となり、過充
電が防止される。 According to FIG. 3, when the storage battery assembly 2 is connected to the charger 1 and the power is turned on when the surface temperature of the storage battery 7 is lower than T1 , the electrolytic capacitor A large current for charging thyristor 5a is applied to the gate circuit of thyristor 6a, turning on thyristor 6a and starting charging. Once the thyristor 6a is turned on, it has the property of remaining on even if no voltage is applied to the gate, so the surface temperature of the storage battery 7 rises at the end of charging and reaches T 1 or higher, causing it to become cold. Even if the temperature sensing element 10 is opened, charging continues. When the surface temperature becomes T2 or more and the temperature sensing element 8 is opened, charging ends.
Once charging is completed, the storage battery 7 is cooled down and its surface temperature becomes below T1 , and even if both the temperature sensing elements 10 and 8 are closed, the gate circuit is closed because the electrolytic capacitor 5a is already charged. A large current does not flow through the battery, the thyristor is not turned on again, and charging is not started. As in the conventional case, the characteristics shown in FIG. 2 are achieved, and overcharging is prevented.
また、充電を終了し、充電器１から蓄電池組立
体２を分離すると、スイツチ１１が閉路し、電解
コンデンサ５ａに充電されていた電荷は抵抗器５
ｂを通して放電されるので、再び充電可能な状態
に復帰する。 Further, when charging is finished and the storage battery assembly 2 is separated from the charger 1, the switch 11 is closed and the electric charge stored in the electrolytic capacitor 5a is transferred to the resistor 5.
Since it is discharged through b, it returns to a state where it can be charged again.
次に、蓄電池７の表面温度がT1より高いとき
に充電器１に蓄電池組立体２を接続したとする
と、接続直後は低温感温素子１０が開路している
ので充電は開始されない。しかし、時間の経過と
ともに蓄電池７が冷却し、その表面温度がT1以
下となつて感温素子１０が閉路すると、電解コン
デンサ５ａを充電する電流がゲート回路に流れ、
サイリスタ６ａがオン状態となり、充電が開始さ
れる。以下上記と同様に動作する。このときの蓄
電池表面温度と充電電流の時間的関係を第４図に
示す。なお、ａ曲線は蓄電池表面温度、ｂ曲線は
充電電流である。 Next, if the storage battery assembly 2 is connected to the charger 1 when the surface temperature of the storage battery 7 is higher than T1 , charging will not start immediately after connection because the low temperature temperature sensing element 10 is open circuit. However, as time passes, the storage battery 7 cools down, its surface temperature drops below T1 , and the temperature sensing element 10 closes, the current that charges the electrolytic capacitor 5a flows through the gate circuit.
The thyristor 6a is turned on and charging starts. The following operations are the same as above. The temporal relationship between the storage battery surface temperature and the charging current at this time is shown in FIG. Note that the a curve represents the storage battery surface temperature, and the b curve represents the charging current.
以上説明したように、本考案によれば、大電流
での放電直後などのように蓄電池の表面温度が所
定値以上に高いときに充電器に接続しても、蓄電
池が冷却されれば自動的に充電が開始されるの
で、使用上便利であるという効果がある。 As explained above, according to the present invention, even if the battery is connected to a charger when the surface temperature of the battery is higher than a predetermined value, such as immediately after discharging with a large current, the battery will automatically charge after the battery has cooled down. Since charging starts at , it is convenient to use.
第１図は従来の充電回路の回路図、第２は第１
図による場合の充電特性と蓄電池表面温度との関
係を示す線図、第３図は本考案の充電回路の一実
施例を示す回路図、第４図は第３図による場合の
充電特性と蓄電池表面温度との関係を示す線図で
ある。
１……充電器、２……蓄電池組立体、３……直
流電源装置、４……スイツチング回路、５……過
充電防止保護回路、５ａ……電解コンデンサ、５
ｂ……抵抗器、６……制御回路、６ａ……ゲート
付制御素子、７……被充電蓄電池、８……感温素
子、９……コネクタ、１０……低温感温素子、１
１……スイツチ。
Figure 1 is a circuit diagram of a conventional charging circuit, and Figure 2 is a circuit diagram of a conventional charging circuit.
Fig. 3 is a circuit diagram showing an embodiment of the charging circuit of the present invention; Fig. 4 is a diagram showing the relationship between charging characteristics and storage battery surface temperature in the case shown in Fig. 3; FIG. 3 is a diagram showing the relationship with surface temperature. DESCRIPTION OF SYMBOLS 1... Charger, 2... Storage battery assembly, 3... DC power supply, 4... Switching circuit, 5... Overcharge prevention protection circuit, 5a... Electrolytic capacitor, 5
b...Resistor, 6...Control circuit, 6a...Control element with gate, 7...Storage battery to be charged, 8...Temperature sensing element, 9...Connector, 10...Low temperature sensing element, 1
1...Switch.
Claims (1)
度が第１所定温度になつた時にその接点を開く感
温素子を電気的に直列に接続した蓄電池組立体
と、該蓄電池組立体に接続された際、アノードが
前記感温素子と直列に接続されるサイリスタ及び
蓄電池と感温素子の接続点とサイリスタのゲート
との間に接続されるコンデンサからなる充電器と
により構成される過充電防止機能を有する充電回
路であつて、 前記感温素子より低い第２所定温度でその接点
を開く低温感温素子を蓄電池表面に接して設ける
と共に該低温感温素子を前記コンデンサと直列に
接続し、該直列回路を前記蓄電池と感温素子の接
続点とサイリスタのゲートとの間に接続したこと
を特徴とする充電回路。[Scope of Claim for Utility Model Registration] A storage battery assembly in which a temperature sensing element is attached to the surface of a storage battery to be charged and that opens its contacts when the temperature of the surface reaches a first predetermined temperature, and is electrically connected in series; A charger comprising a thyristor whose anode is connected in series with the temperature sensing element when connected to the storage battery assembly, and a capacitor connected between the connection point of the storage battery and the temperature sensing element and the gate of the thyristor. A charging circuit having an overcharge prevention function configured, wherein a low-temperature temperature-sensing element that opens its contacts at a second predetermined temperature lower than that of the temperature-sensing element is provided in contact with the surface of the storage battery, and the low-temperature temperature-sensing element is connected to the capacitor. , and the series circuit is connected between a connection point between the storage battery and the temperature sensing element and a gate of the thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981027962U JPS6316292Y2 (en) | 1981-02-27 | 1981-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981027962U JPS6316292Y2 (en) | 1981-02-27 | 1981-02-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57141640U JPS57141640U (en) | 1982-09-04 |
| JPS6316292Y2 true JPS6316292Y2 (en) | 1988-05-10 |
Family
ID=29825646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981027962U Expired JPS6316292Y2 (en) | 1981-02-27 | 1981-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6316292Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362632U (en) * | 1976-10-29 | 1978-05-27 |
-
1981
- 1981-02-27 JP JP1981027962U patent/JPS6316292Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57141640U (en) | 1982-09-04 |
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