JPH05304730A - Battery charger - Google Patents
Battery chargerInfo
- Publication number
- JPH05304730A JPH05304730A JP10734392A JP10734392A JPH05304730A JP H05304730 A JPH05304730 A JP H05304730A JP 10734392 A JP10734392 A JP 10734392A JP 10734392 A JP10734392 A JP 10734392A JP H05304730 A JPH05304730 A JP H05304730A
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- storage battery
- current control
- circuit
- charging
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は蓄電池の充電に使用され
る充電装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging device used for charging a storage battery.
【０００２】[0002]
【従来の技術】従来、マンガン乾電池に代表される一次
電池が主として使用されてきたが、最近では一次電池の
他にニッケルカドミウム蓄電池や小型鉛シール蓄電池な
どの繰り返し使用が可能な二次電池も多く使用されるよ
うになってきている。以下、従来の充電装置について、
ニッケルカドミウム蓄電池を用いる場合を例にとり、図
３及び図４を参照しながら説明する。Conventionally, primary batteries represented by manganese dry batteries have been mainly used, but recently, in addition to primary batteries, many rechargeable batteries such as nickel-cadmium storage batteries and small lead-seal storage batteries have been used repeatedly. It is becoming used. Below, regarding the conventional charging device,
An example of using a nickel-cadmium storage battery will be described with reference to FIGS. 3 and 4.
【０００３】図３に示すように、従来の充電装置は、電
源回路１，電流制御回路２，ニッケルカドミウム蓄電池
３，制御回路４及び電圧検知回路５から構成されてい
る。As shown in FIG. 3, the conventional charging device comprises a power supply circuit 1, a current control circuit 2, a nickel-cadmium storage battery 3, a control circuit 4 and a voltage detection circuit 5.
【０００４】電源回路１は充電装置に電力を供給し、電
流制御回路２はニッケルカドミウム蓄電池３への充電を
制御する。制御回路４は電流制御回路２の動作を制御
し、電圧検知回路５は電池の端子電圧を検知する。図４
は従来の充電装置を用いてニッケルカドミウム蓄電池の
充電を行うときの電池の端子電圧の変化の様子を表した
もので、二種類の電池について示してある。縦軸を端子
電圧、横軸を充電時間とし、最大受容電圧をＶp、しき
い電圧をＶe，Ｖe′とした。The power supply circuit 1 supplies electric power to the charging device, and the current control circuit 2 controls charging of the nickel-cadmium storage battery 3. The control circuit 4 controls the operation of the current control circuit 2, and the voltage detection circuit 5 detects the terminal voltage of the battery. Figure 4
Shows how the terminal voltage of the battery changes when the nickel-cadmium storage battery is charged using the conventional charging device, and shows two types of batteries. The vertical axis represents the terminal voltage, the horizontal axis represents the charging time, the maximum acceptance voltage was V p , and the threshold voltages were V e and V e ′.
【０００５】以下、従来の充電装置の作用について説明
する。電源回路１から電流制御回路２に送電されると、
制御回路４による電流制御回路２の制御及び電流制御回
路２からニッケルカドミウム蓄電池３への充電が開始さ
れる。このとき、ニッケルカドミウム蓄電池３の端子電
圧が電圧検知回路５によって検知されてその結果が制御
回路４へ伝えられる。電圧検知回路５での検知結果が制
御回路４へ伝えられた後は、再び制御回路４によって電
流制御回路２の制御が行われ、以下同じことを繰り返
す。このようにして充電を続け、端子電圧が最大受容電
圧Ｖpに達すると、端子電圧を｜Ｖp−Ｖe｜だけ減少さ
せるように電流制御回路２及び制御回路４が作動し、し
きい電圧Ｖeまで減少させる。端子電圧がしきい電圧Ｖe
まで達すると、制御回路４は充電終了と判断し、電流制
御回路２からニッケルカドミウム蓄電池３への送電が停
止され、ニッケルカドミウム蓄電池３への充電が終了さ
れるものである。The operation of the conventional charging device will be described below. When power is transmitted from the power supply circuit 1 to the current control circuit 2,
Control of the current control circuit 2 by the control circuit 4 and charging of the nickel-cadmium storage battery 3 from the current control circuit 2 are started. At this time, the terminal voltage of the nickel-cadmium storage battery 3 is detected by the voltage detection circuit 5, and the result is transmitted to the control circuit 4. After the detection result of the voltage detection circuit 5 is transmitted to the control circuit 4, the control circuit 4 controls the current control circuit 2 again, and the same operation is repeated thereafter. When charging is continued in this way and the terminal voltage reaches the maximum acceptable voltage V p , the current control circuit 2 and the control circuit 4 operate so as to reduce the terminal voltage by | V p −V e | Decrease to V e . The terminal voltage is the threshold voltage V e
When it reaches, the control circuit 4 determines that the charging is completed, the power transmission from the current control circuit 2 to the nickel-cadmium storage battery 3 is stopped, and the charging of the nickel-cadmium storage battery 3 is completed.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、ニッケ
ルカドミウム蓄電池３は、電池によって異なる特性を有
するものであり、最大受容電圧としきい電圧との差が少
ない電池を充電する場合に、最大受容電圧Ｖpから一定
電圧｜Ｖp−Ｖe｜下がったところがしきい電圧であると
認識している従来の充電装置ではしきい電圧を検知でき
ないために充電を終了することができず、事故を起こす
危険性がある等の問題点があった。However, the nickel-cadmium storage battery 3 has different characteristics depending on the battery, and when charging a battery having a small difference between the maximum receiving voltage and the threshold voltage, the maximum receiving voltage V p A constant voltage | V p −V e | from which a threshold voltage is recognized is that the conventional charging device cannot detect the threshold voltage, so charging cannot be terminated and there is a risk of causing an accident. There was such a problem.
【０００７】本発明は、上記問題点を解決して安全、且
つ短時間で確実にできる充電手段を提供することを目的
とする。It is an object of the present invention to provide a charging means which solves the above problems and is safe and can be ensured in a short time.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
に、本発明の充電装置は、蓄電池への送電を制御する電
流制御回路と、前記電流制御回路の作動を制御する制御
回路と、端子電圧検知装置からの信号伝達により一定時
間作動し、その後前記制御回路に前記電流制御回路の制
御を停止させるための信号を送るタイマー回路とを備え
たものである。In order to solve the above-mentioned problems, a charging device of the present invention comprises a current control circuit for controlling power transmission to a storage battery, a control circuit for controlling the operation of the current control circuit, and a terminal. A timer circuit which operates for a certain period of time by transmitting a signal from the voltage detection device and then sends a signal for stopping the control of the current control circuit to the control circuit is provided.
【０００９】[0009]
【作用】上記した構成により、しきい電圧まで充電され
るとタイマー機能が一定時間作動し、タイマー機能の作
動終了後に充電が終了する。With the above-described structure, the timer function operates for a certain period of time when it is charged to the threshold voltage, and the charging is completed after the operation of the timer function is completed.
【００１０】[0010]
【実施例】本発明の一実施例について、図１及び図２を
参照して説明する。図１に示す通り、充電装置は電源回
路６，電流制御回路７，ニッケルカドミウム蓄電池８，
制御回路９，コンパレータ１０及びタイマー回路１１か
ら構成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the charging device includes a power supply circuit 6, a current control circuit 7, a nickel-cadmium storage battery 8,
It is composed of a control circuit 9, a comparator 10 and a timer circuit 11.
【００１１】電源回路６は充電装置に電力を供給し、電
流制御回路７はニッケルカドミウム蓄電池８への送電を
制御し、制御回路９は主として電流制御回路７の作動を
制御する。端子電圧検知装置であるコンパレータ１０は
ニッケルカドミウム蓄電池８の端子電圧を検知し、タイ
マー回路１１はコンパレータ１０からの信号伝達により
作動するものである。The power supply circuit 6 supplies electric power to the charging device, the current control circuit 7 controls power transmission to the nickel-cadmium storage battery 8, and the control circuit 9 mainly controls the operation of the current control circuit 7. The comparator 10, which is a terminal voltage detection device, detects the terminal voltage of the nickel-cadmium storage battery 8, and the timer circuit 11 operates by the signal transmission from the comparator 10.
【００１２】以下、上記構成における作用を説明する。
充電装置は電源回路６から電流制御回路７に送電される
と、制御回路９による電流制御回路７に送電されると、
制御回路９による電流制御回路７の制御及び電流制御回
路７からニッケルカドミウム蓄電池８への定電流充電が
開始される。このとき、ニッケルカドミウム蓄電池８の
端子電圧がコンパレータ１０によって検知され、その結
果が制御回路９へ伝えられる。コンパレータ１０での検
知結果が制御回路９へ伝えられた後は、再び制御回路９
によって電流制御回路７の制御が行われ、以下同じこと
を繰り返す。このようにして充電を続け、端子電圧がし
きい値（しきい電圧）Ｖoになると、コンパレータ１０
からタイマー回路１１にタイマー機能を一定時間｜ｔ1
−ｔ0｜作動させる信号が送られ、タイマー回路１１が
作動する。タイマー回路１１は一定時間作動後充電時間
ｔ1になると、制御回路７に電流制御回路２の制御を停
止させる信号が送られ、電流制御回路２からニッケルカ
ドミウム蓄電池８への送電を停止させて充電が終了され
る。このことを図２を用いて説明する。縦軸を端子電
圧、横軸を充電時間にとり、しきい電圧をＶo、ニッケ
ルカドミウム蓄電池がしきい電圧Ｖoに達したときの充
電時間をｔ0、タイマー機能の作動終了時の充電時間を
ｔ1とする。充電を開始すると、時間と共に端子電圧が
上昇する。端子電圧が上昇してしきい電圧Ｖoに達する
と、タイマー機能が一定時間｜ｔ1−ｔ0｜作動し、充電
時間がｔ1になると充電が終了する。The operation of the above structure will be described below.
When the charging device transmits power from the power supply circuit 6 to the current control circuit 7, and transmits power to the current control circuit 7 by the control circuit 9,
Control of the current control circuit 7 by the control circuit 9 and constant current charging of the nickel cadmium storage battery 8 from the current control circuit 7 are started. At this time, the terminal voltage of the nickel-cadmium storage battery 8 is detected by the comparator 10, and the result is transmitted to the control circuit 9. After the detection result of the comparator 10 is transmitted to the control circuit 9, the control circuit 9 is restarted.
The current control circuit 7 is controlled by, and the same operation is repeated thereafter. When the terminal voltage reaches the threshold value (threshold voltage) V o by continuing charging in this way, the comparator 10
From the timer circuit 11 to the timer function for a fixed time | t 1
-T 0 | A signal for actuation is sent and the timer circuit 11 is actuated. When the charging time t 1 is reached after the timer circuit 11 operates for a certain period of time, a signal for stopping the control of the current control circuit 2 is sent to the control circuit 7, and the current control circuit 2 stops the power transmission to the nickel-cadmium storage battery 8 for charging. Is ended. This will be described with reference to FIG. The vertical axis is the terminal voltage and the horizontal axis is the charging time. The threshold voltage is V o , the charging time when the nickel-cadmium storage battery reaches the threshold voltage V o is t 0 , and the charging time at the end of the timer function operation is Let t 1 . When charging is started, the terminal voltage rises with time. When the terminal voltage rises and reaches the threshold voltage V o , the timer function operates for a certain time | t 1 −t 0 |, and the charging ends when the charging time reaches t 1 .
【００１３】このように本発明の一実施例によれば、制
御回路９による電流制御回路７の制御及び電流制御回路
７からニッケルカドミウム蓄電池８への送電により充電
され、ニッケルカドミウム蓄電池８の端子電圧がしきい
値に達したのちにタイマー回路を一定時間作動させて充
電が終了されるので、ニッケルカドミウム蓄電池８への
充電が短時間で確実且つ安全に行われる。As described above, according to one embodiment of the present invention, the terminal voltage of the nickel-cadmium storage battery 8 is charged by the control of the current control circuit 7 by the control circuit 9 and the power transmission from the current control circuit 7 to the nickel-cadmium storage battery 8. After the voltage reaches the threshold value, the timer circuit is operated for a certain period of time to end the charging, so that the nickel-cadmium storage battery 8 can be charged reliably and safely in a short time.
【００１４】尚、本実施例では端子電圧検知回路として
コンパレータを使用し、別個にタイマー回路を用いた
が、Ａ／Ｄコンバータ機能・タイマー機能を備えたマイ
クロコンピュータ等を使用しても良い。In this embodiment, the comparator is used as the terminal voltage detecting circuit and the timer circuit is separately used. However, a microcomputer having an A / D converter function / timer function may be used.
【００１５】また、蓄電池としてニッケルカドミウム蓄
電池を用いたが、ニッケル水素蓄電池，小型鉛シール蓄
電池を等を用いても良い。Although the nickel-cadmium storage battery is used as the storage battery, a nickel-hydrogen storage battery, a small lead-sealed storage battery or the like may be used.
【００１６】また、本実施例ではタイマー回路が作動し
てから一定時間経過後に電流制御回路を停止させたが、
一定時間経過後に電流制御回路から蓄電池に微小電流
（トリクル充電電流）を流すように構成しても良い。Further, in the present embodiment, the current control circuit is stopped after a lapse of a fixed time after the timer circuit is activated.
A minute current (trickle charging current) may be made to flow from the current control circuit to the storage battery after a lapse of a certain time.
【００１７】[0017]
【発明の効果】以上の説明から明らかなように、本発明
の充電装置は蓄電池への送電を制御する電流制御回路
と、前記電流制御回路の作動を制御する制御回路と、端
子電圧検知装置からの信号伝達により一定時間作動し、
その後、前記制御回路に対して、前記電流制御回路の制
御を停止させるための信号、あるいは前記電流制御回路
から前記蓄電池に微小電流を流させるための信号を送る
タイマー回路とを備えているので、最大受容電圧を検知
せずに蓄電池の充電を行うことができ、その充電を短時
間で確実、且つ安全に行うことができる。As is apparent from the above description, the charging device of the present invention comprises a current control circuit for controlling power transmission to a storage battery, a control circuit for controlling the operation of the current control circuit, and a terminal voltage detecting device. It operates for a certain time by the signal transmission of
Then, to the control circuit, a signal for stopping the control of the current control circuit, or a timer circuit for sending a signal for causing a minute current to flow from the current control circuit to the storage battery, The storage battery can be charged without detecting the maximum reception voltage, and the charging can be performed reliably and safely in a short time.
【図１】本発明の一実施例における充電装置のブロック
図FIG. 1 is a block diagram of a charging device according to an embodiment of the present invention.
【図２】同装置の特性図FIG. 2 is a characteristic diagram of the device.
【図３】従来の充電装置のブロック図FIG. 3 is a block diagram of a conventional charging device.
【図４】従来の充電装置を用いてニッケルカドミウム蓄
電池の充電を行うときのニッケルカドミウム蓄電池の端
子電圧の変化の様子を表した特性図FIG. 4 is a characteristic diagram showing how the terminal voltage of the nickel-cadmium storage battery changes when the nickel-cadmium storage battery is charged using a conventional charging device.
６ 電源回路 ７ 電流制御回路 ８ ニッケルカドミウム蓄電池 ９ 制御回路 １０ コンパレータ １１ タイマー回路 6 Power supply circuit 7 Current control circuit 8 Nickel cadmium storage battery 9 Control circuit 10 Comparator 11 Timer circuit
Claims (1)
制御機能を有する電流制御回路と、前記電流制御回路に
よって通電を制御される蓄電池と、前記電流制御回路に
作動を制御する制御回路と、前記蓄電池の端子電圧を検
知する端子電圧検知装置と、前記端子電圧検知装置から
の信号により一定時間作動し、作動終了後に前記制御回
路に前記電流制御回路の制御を停止させる信号、あるい
は前記電流制御回路から前記蓄電池へ微小電流を流す信
号を送るタイマー回路とを備えた充電装置。1. A power supply device serving as a power supply for the entire device, a current control circuit having an energization control function, a storage battery whose energization is controlled by the current control circuit, and a control circuit which controls the operation of the current control circuit. , A terminal voltage detection device for detecting the terminal voltage of the storage battery, and a signal for operating for a certain period of time according to a signal from the terminal voltage detection device and for stopping the control of the current control circuit by the control circuit after the operation is completed, or the current A charging device comprising: a timer circuit that sends a signal that causes a minute current to flow from the control circuit to the storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10734392A JPH05304730A (en) | 1992-04-27 | 1992-04-27 | Battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10734392A JPH05304730A (en) | 1992-04-27 | 1992-04-27 | Battery charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05304730A true JPH05304730A (en) | 1993-11-16 |
Family
ID=14456652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10734392A Pending JPH05304730A (en) | 1992-04-27 | 1992-04-27 | Battery charger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05304730A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016031075A1 (en) * | 2014-08-29 | 2016-03-03 | 日産自動車株式会社 | Secondary battery charging system and charging method |
-
1992
- 1992-04-27 JP JP10734392A patent/JPH05304730A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016031075A1 (en) * | 2014-08-29 | 2016-03-03 | 日産自動車株式会社 | Secondary battery charging system and charging method |
| CN106797126A (en) * | 2014-08-29 | 2017-05-31 | 日产自动车株式会社 | Secondary battery charging system and charging method |
| JPWO2016031075A1 (en) * | 2014-08-29 | 2017-07-27 | 日産自動車株式会社 | Secondary battery charging system and charging method |
| US10286789B2 (en) | 2014-08-29 | 2019-05-14 | Nissan Motor Co., Ltd. | Secondary battery charging system with allowable voltage zone and method thereof |
| CN106797126B (en) * | 2014-08-29 | 2020-04-24 | 日产自动车株式会社 | Secondary battery charging system and charging method |
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