JPS6016126A - Discharge detecting circuit of battery - Google Patents

Discharge detecting circuit of battery

Info

Publication number
JPS6016126A
JPS6016126A JP58124262A JP12426283A JPS6016126A JP S6016126 A JPS6016126 A JP S6016126A JP 58124262 A JP58124262 A JP 58124262A JP 12426283 A JP12426283 A JP 12426283A JP S6016126 A JPS6016126 A JP S6016126A
Authority
JP
Japan
Prior art keywords
battery
transistor
load
voltage
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.)
Pending
Application number
JP58124262A
Other languages
Japanese (ja)
Inventor
森岡 達
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP58124262A priority Critical patent/JPS6016126A/en
Publication of JPS6016126A publication Critical patent/JPS6016126A/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 本発明は電池応用機器の電池切れ寸前に使用者に電池の
容量がもう幾分も残っていないことを知らせる放電検出
回路に関するものである。
[Detailed Description of the Invention] (a) Industrial Application Field The present invention relates to a discharge detection circuit that notifies the user of a battery-applied device that the battery has almost no capacity left when the battery is about to run out. .

(口) 従来技術 従来より電池の残存容1を発光ダイオード等を用いて表
示する手段を用いるものがあるが負荷に供給される電流
が一定置以下になれば正常な作動が行なえないような負
荷の場合、従来のものではたとえ表示によって電池の残
存容量が残り僅かであると気づいても、そのまま機器を
使用することができ、このため大きな事故を招く慣れが
ある。
(Explanation) Conventional technology Conventionally, there are devices that use means to display the remaining capacity of a battery using a light emitting diode, etc., but there are loads that cannot operate normally if the current supplied to the load falls below a certain level. In the case of conventional devices, even if the display shows that the battery has very little remaining capacity, the user can continue to use the device, which can lead to serious accidents.

(ハ) 発明の目的 本発明は上述の如き従来技術の問題点に鑑み成されたも
のであり、電池の残存容量が残り僅かに成れば自動的に
負荷への電流供給を停止することを目的とするものであ
る。 − (二) 発明の構成 電池と負荷との直列回路に制御用トランジスタを直列接
続し、前記直列回路に電池電圧検出用ICを並列接続す
ると共に、該ICの出方端子を前記トランジスタのベー
スに接続し、且前記トランジスタのコレフタルエミッタ
間に補助スイッチを有するバイアス回路を設けて成り、
電池の放電電圧が所定の値になった際トランジスタを非
導通の状平にして負荷への通電を停止さゼるものである
(c) Purpose of the Invention The present invention has been made in view of the problems of the prior art as described above, and it is designed to automatically stop the current supply to the load when the remaining capacity of the battery is low. This is the purpose. - (2) Constituent structure of the invention A control transistor is connected in series to a series circuit of a battery and a load, a battery voltage detection IC is connected in parallel to the series circuit, and the output terminal of the IC is connected to the base of the transistor. and a bias circuit having an auxiliary switch between the corephthal emitters of the transistors,
When the discharge voltage of the battery reaches a predetermined value, the transistor becomes non-conductive and the current supply to the load is stopped.

(ボ) 実施例 以下本発明を電池として充電可能な電池を用い、負荷と
してモータを接続した機器の回路を例にとって説明する
(B) Embodiment The present invention will be explained below by taking as an example a circuit of a device using a rechargeable battery as a battery and connecting a motor as a load.

(1)は充電可能なNi−Cd等の電池であり、−次コ
イル(2〉を商用交流電源(3)に接続可能とせる降圧
1−ランス(4)の二次コイル(5)に整流用ダイオー
ド(6)を介して接続されている。
(1) is a rechargeable battery such as Ni-Cd, which is rectified into the secondary coil (5) of the step-down lance (4) that allows the secondary coil (2> to be connected to the commercial AC power supply (3)). are connected via a diode (6).

(7)は前記電池(1)と主スイ・/チ(8)を介して
直列接続された負荷としてのモータであり、前記主スィ
ッチ(8)と該モータ(7)の間には制御用トランジス
タ(9)が介挿されている。
(7) is a motor as a load connected in series with the battery (1) via the main switch (8), and between the main switch (8) and the motor (7) there is a motor for control. A transistor (9) is inserted.

(10)は前記電池(1)とモータ(7)との直列回路
(11)に対して並列接続された電池電圧検出用ICで
あり、電池電圧検出調整用のボリューム(12)を有す
ると共に入力端子(10a)と出力端子(10b)を有
し、該出力端子(10b)を前記トランジスタ(9)ノ
ベースに接続している。
(10) is a battery voltage detection IC that is connected in parallel to the series circuit (11) of the battery (1) and motor (7), and has a volume (12) for battery voltage detection and adjustment and an input. It has a terminal (10a) and an output terminal (10b), and the output terminal (10b) is connected to the base of the transistor (9).

(12’)は前記出力端子(10b)と前記部列回路(
11)との間に抵抗(13)を介しで接続された発光ダ
イオードである。
(12') indicates the output terminal (10b) and the column circuit (
11) through a resistor (13).

(14)は前記トランジスタ(9〉のコレフタルエミッ
タ間に設けられたバイアス回路に介挿された補助スイッ
チであり、 (15)はベース−二ルクタ間に介挿され
た抵抗である。
(14) is an auxiliary switch inserted in the bias circuit provided between the corephtal emitter of the transistor (9>), and (15) is a resistor inserted between the base and the second transistor.

次に本発明の詳細な説明する。Next, the present invention will be explained in detail.

トランジスタ(4)の−次コイル(2〉を交流電源(3
)から切離し、主スィッチ(8〉を開成すると電池(1
〉よりI C(10)(7)人力端子(10a)に電流
が流れ、その出力端子(10b)からは高出力が出力さ
れるので、トランジスタ(9)のベース電位が上がっ3
− て該トランジスタ〈9)が導通し、モータ(7)に電流
が供給されて該モータ(7)が駆動する。
The secondary coil (2) of the transistor (4) is connected to the AC power supply (3
) and open the main switch (8>), the battery (1
>, a current flows to the human power terminal (10a) of I C (10) (7), and a high output is output from its output terminal (10b), so the base potential of the transistor (9) increases.
- The transistor (9) becomes conductive, current is supplied to the motor (7), and the motor (7) is driven.

電池(1)が消費きれ時間(to)経過後所定電圧(V
 s + )に迄その放電電圧が低下すると、IC(1
0)によって検知されその出力端子(10b)の出力が
高出力から低出力に変わる。よって発光ダイオード(1
2)が点灯し、比トランジスタ(9)が4[導通となっ
てモータ(7)への電流供給を停止する。
The predetermined voltage (V
When the discharge voltage decreases to IC(1
0), and the output of its output terminal (10b) changes from high output to low output. Therefore, the light emitting diode (1
2) lights up, and the ratio transistor (9) becomes conductive, stopping the current supply to the motor (7).

モータ(7)が面記所定電圧(V s 1)以下で正常
な運転が不可能な場合は前記電池(1)を充電する必要
がある。この時は主スィッチ(8)を開放し、電池(1
)とモータ(7)との接続を切ってから、トランス(4
)の−次コイル(2)を交流電源(3)に接続し、充電
を充分性なってから再び主スィッチ(8)によるモータ
(7)の駆動操作を行なう。
If the motor (7) cannot operate normally because the voltage is below the predetermined voltage (V s 1), the battery (1) needs to be charged. At this time, open the main switch (8) and
) and the motor (7), then disconnect the transformer (4).
) is connected to the alternating current power source (3), and after charging is sufficient, the main switch (8) is operated to drive the motor (7) again.

モータ(7)が所定電圧(Vs、)以下でも残存容量で
駆動可能な場合には、一旦モータ(7)が停止した後補
助スイッチ(14)を閉成してやれば再びモータ〈7〉
は短時間ではあるが駆動を続ける。
If the motor (7) can be driven with its remaining capacity even below the predetermined voltage (Vs,), once the motor (7) has stopped and the auxiliary switch (14) is closed, the motor (7) can be driven again.
continues to drive, albeit for a short time.

尚IC(10)が電池の所定電圧(Vs+)を検出し、
4− トランジスタ(9)が非導通となると無負荷となって若
干電圧が上昇し電圧(VS2)となる(第2図参照)。
Note that the IC (10) detects the predetermined voltage (Vs+) of the battery,
4- When the transistor (9) becomes non-conductive, there is no load and the voltage increases slightly to voltage (VS2) (see Figure 2).

しかしながらIC(10)はそれ自身E″ステリシス有
しており、トランジスタ(9)の非導通復電圧(Vs+
)から電圧(VS2)へ上昇してもその出力端子(lo
b)からの低出力を維持し、再び]・ランジスタ(9)
が導通することなく、補助スイッチ(14)を閉成する
迄はモータ(7)は駆動されなくなっている。
However, the IC (10) itself has E'' steresis, and the non-conducting return voltage (Vs+
) to the voltage (VS2), its output terminal (lo
b) maintain low output from again ]- transistor (9)
does not conduct, and the motor (7) is not driven until the auxiliary switch (14) is closed.

(へ) 発明の効果 本発明は以上の説明の如く、電池と負荷との直列回路に
制御用トランジスタを直列接続し、前記直列回路に電池
電圧検出用ICを並列接続すると共に、該ICの出力端
子を前記トランジスタのベースに接続し、且前記トラン
ジスタのフレフタルエミッタ間に補助スイッチを有する
バイアス回路を設けたものであって、電池の残存容量が
残り僅かになればそれを検出して負荷への電流供給を即
座に停止するので、負荷の誤動作による事故の惧れは殆
どなくなり、また負荷への電流供給が一旦停止しても、
若干残った電池の容量分を使いたい時に補助スイッチを
閉成するだけで簡単に負荷の再使用ができて非常に便利
である。
(f) Effects of the Invention As described above, the present invention connects a control transistor in series to a series circuit of a battery and a load, connects a battery voltage detection IC in parallel to the series circuit, and The terminal is connected to the base of the transistor, and a bias circuit having an auxiliary switch is provided between the freftal emitters of the transistor, and when the remaining capacity of the battery is low, it is detected and the bias circuit is connected to the base of the transistor. Since the current supply to the load is immediately stopped, there is almost no risk of accidents due to malfunction of the load, and even if the current supply to the load is temporarily stopped,
When you want to use some remaining battery capacity, you can easily reuse the load by simply closing the auxiliary switch, which is very convenient.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例の回路図、第2図はその電池
の電圧特性図である。 (1)・・・電池、(7)・・・負荷、(9)・・・ト
ランジスタ、(10)・・・IC,(10b)・・・出
力端子、(14)・・補助スイッチ。
FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a voltage characteristic diagram of the battery. (1)...Battery, (7)...Load, (9)...Transistor, (10)...IC, (10b)...Output terminal, (14)...Auxiliary switch.

Claims (2)

【特許請求の範囲】[Claims] (1)電池と負荷との直列回路に制御用トランジスタを
直列接続し、前記直列回路に電池電圧検出用ICを並列
接続すると共に、該ICの出力端子を前記トランジスタ
のベースに接続し、且前記トランジスタのコレフタルエ
ミッタ間に補助スイッチを有するバイアス回路を設けて
成る電池の放電検出回路。
(1) A control transistor is connected in series to a series circuit of a battery and a load, a battery voltage detection IC is connected in parallel to the series circuit, and the output terminal of the IC is connected to the base of the transistor; A battery discharge detection circuit comprising a bias circuit having an auxiliary switch between the corephthal emitters of a transistor.
(2)前記ICは前記電池の放電電圧を検出し、該電圧
が所定のレヘルになった際に前記出力端子より低出力を
前記トランジスタのベースに供給し、該トランジスタを
非導通の状態にして前記負荷への電流供給を停止させる
ことを特徴とする特許許請求の範囲第1項記載の電池の
放電検出回路。 《3)前記負荷への電流供給停止後、前記補助スイッチ
を閉成すれば、前記電池の残存容量によって再び前記負
荷への電流供給が成きれることを特徴とする上記特許請
求の範囲第2項記載の電池の放電検出回路。
(2) The IC detects the discharge voltage of the battery, and when the voltage reaches a predetermined level, supplies a low output from the output terminal to the base of the transistor, making the transistor non-conductive. The battery discharge detection circuit according to claim 1, characterized in that the current supply to the load is stopped. (3) If the auxiliary switch is closed after the current supply to the load is stopped, the current supply to the load can be completed again using the remaining capacity of the battery. Discharge detection circuit for the battery described.
JP58124262A 1983-07-07 1983-07-07 Discharge detecting circuit of battery Pending JPS6016126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58124262A JPS6016126A (en) 1983-07-07 1983-07-07 Discharge detecting circuit of battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58124262A JPS6016126A (en) 1983-07-07 1983-07-07 Discharge detecting circuit of battery

Publications (1)

Publication Number Publication Date
JPS6016126A true JPS6016126A (en) 1985-01-26

Family

ID=14880972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58124262A Pending JPS6016126A (en) 1983-07-07 1983-07-07 Discharge detecting circuit of battery

Country Status (1)

Country Link
JP (1) JPS6016126A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6223333A (en) * 1985-07-19 1987-01-31 三洋電機株式会社 Battery life warning apparatus
JPS62123775U (en) * 1986-01-29 1987-08-06
JPS6384628U (en) * 1986-11-21 1988-06-03
JPS63287320A (en) * 1987-05-19 1988-11-24 Sawafuji Electric Co Ltd Power supply device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4939131B1 (en) * 1969-12-05 1974-10-23
JPS59198845A (en) * 1983-04-22 1984-11-10 松下電器産業株式会社 Battery circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4939131B1 (en) * 1969-12-05 1974-10-23
JPS59198845A (en) * 1983-04-22 1984-11-10 松下電器産業株式会社 Battery circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6223333A (en) * 1985-07-19 1987-01-31 三洋電機株式会社 Battery life warning apparatus
JPS62123775U (en) * 1986-01-29 1987-08-06
JPH0341651Y2 (en) * 1986-01-29 1991-09-02
JPS6384628U (en) * 1986-11-21 1988-06-03
JPS63287320A (en) * 1987-05-19 1988-11-24 Sawafuji Electric Co Ltd Power supply device

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