JPH09320641A - Rechargeable battery pack - Google Patents
Rechargeable battery packInfo
- Publication number
- JPH09320641A JPH09320641A JP8138869A JP13886996A JPH09320641A JP H09320641 A JPH09320641 A JP H09320641A JP 8138869 A JP8138869 A JP 8138869A JP 13886996 A JP13886996 A JP 13886996A JP H09320641 A JPH09320641 A JP H09320641A
- Authority
- JP
- Japan
- Prior art keywords
- secondary battery
- voltage
- battery pack
- overcharge
- rechargeable battery
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Measurement Of Current Or Voltage (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、二次電池を使用し
た充電式電池パックに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rechargeable battery pack using a secondary battery.
【０００２】[0002]
【従来の技術】二次電池を使用した従来の充電式電池パ
ック１として図６に示すような回路が知られている。す
なわち、外部端子ＶＤＤまたはＶＳＳにスイッチ回路４
を介して二次電池２が接続されている。さらに二次電池
２に接続して過充放電・過電流制御回路３が接続されて
いる。過充放電・過電流制御回路３は、二次電池２の電
圧及び電流を検出する機能を備えており、二次電池２の
電圧が過充電状態（電圧が所定の高電圧値よりも高い状
態）、または過放電状態（電圧が所定の電圧値よりも低
い状態）及び過電流状態（電流が所定の電流値よりも大
きい場合）を検出する。過充放電・過電流制御回路３は
過充放電・過電流を検出しスイッチ回路４をＯＦＦする
信号を出力し、ＶＳＳ，ＶＤＤに接続している負荷（例
えば二次電池使用の携帯用コンピュータなど）へのエネ
ルギー出力をストップする。2. Description of the Related Art As a conventional rechargeable battery pack 1 using a secondary battery, a circuit as shown in FIG. 6 is known. That is, the switch circuit 4 is connected to the external terminal VDD or VSS.
The secondary battery 2 is connected via. Further, an overcharge / discharge / overcurrent control circuit 3 is connected to the secondary battery 2. The overcharge / discharge / overcurrent control circuit 3 has a function of detecting the voltage and current of the secondary battery 2, and the voltage of the secondary battery 2 is in an overcharged state (when the voltage is higher than a predetermined high voltage value). ), Or an overdischarge state (a voltage is lower than a predetermined voltage value) and an overcurrent state (when the current is higher than a predetermined current value). The overcharge / discharge / overcurrent control circuit 3 outputs a signal for detecting the overcharge / discharge / overcurrent and turning off the switch circuit 4, and loads connected to VSS and VDD (for example, a portable computer using a secondary battery, etc.). ) To stop the energy output to.
【０００３】つまりこの充電式電池パック１は、二次電
池２と外部端子との間のスイッチ回路４を制御すること
により二次電池２への過度の充電及び二次電池２の負荷
へのエネルギー供給による二次電池２の過度の蓄電能力
の低下を防ぐ。That is, the rechargeable battery pack 1 controls the switch circuit 4 between the secondary battery 2 and the external terminal to excessively charge the secondary battery 2 and to store energy in the load of the secondary battery 2. It is possible to prevent an excessive decrease in the storage capacity of the secondary battery 2 due to the supply.
【０００４】[0004]
【発明が解決しようとする課題】しかし従来の充電式電
池パックでは、二次電池電圧をＶ１、過放電検出電圧を
Ｖ３とするとき、図７（Ａ）のように二次電池電圧Ｖ１
が過放電検出電圧Ｖ３より低下すると、過充放電・過電
流制御回路が過放電・過電流を検出しスイッチ回路４を
ＯＦＦすると即座にＶＳＳ，ＶＤＤ間の出力電圧Ｖ４が
０になる（図７（Ｂ）参照）。このときこの充電式電池
パックを使用している負荷が例えば二次電池を使用した
コンピュータである場合ＶＳＳ，ＶＤＤ間の電圧が０に
なった瞬間に動作しているとその時点のデータが消えた
り、誤動作する恐れがある。However, in the conventional rechargeable battery pack, when the secondary battery voltage is V1 and the overdischarge detection voltage is V3, the secondary battery voltage V1 is as shown in FIG. 7A.
Is lower than the over-discharge detection voltage V3, the over-charge / over-current control circuit detects the over-discharge / over-current, and when the switch circuit 4 is turned off, the output voltage V4 between VSS and VDD immediately becomes 0 (FIG. 7). (See (B)). At this time, if the load using the rechargeable battery pack is a computer using a secondary battery, for example, if the load is operating at the moment when the voltage between VSS and VDD becomes 0, the data at that time may disappear. , There is a risk of malfunction.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、この発明は充電式電池パックにプリエンド信号出力
端子を設け、二次電池の過放電・過電流を検出するとプ
リエンド信号を該プリエンド信号出力端子に出力した後
スイッチ回路をＯＦＦするようにした。In order to solve the above problems, the present invention provides a rechargeable battery pack with a preend signal output terminal, which detects the overdischarge / overcurrent of a secondary battery and outputs the preend signal. After outputting to the output terminal, the switch circuit is turned off.
【０００６】過放電・過電流を検出するとプリエンド信
号を出力した後スイッチ回路をＯＦＦするため充電式電
池パックを使用した負荷が電源が０になる前に動作を停
止することが可能になり、負荷が動作を停止した後電圧
が０になるため負荷の誤動作を防ぐことができる。When the over-discharge / over-current is detected, the switch circuit is turned off after outputting the pre-end signal, so that the load using the rechargeable battery pack can stop its operation before the power source becomes 0. Since the voltage becomes 0 after stopping the operation of, the malfunction of the load can be prevented.
【０００７】[0007]
【発明の実施の形態】以下にこの発明の実施例を図面に
基づいて説明する。図１は、本発明の充電式電池パック
とそれに負荷として接続されている機器を示す説明図で
ある。充電式電池パック１には外部端子ＶＳＳとＶＤＤ
の他にプリエンド信号出力端子が備えられている。外部
端子ＶＳＳは電池パックの最低電位を出力し外部端子Ｖ
ＤＤは電池パックの最高電位を出力する。プリエンド信
号出力端子はＶＤＤ−ＶＳＳ間の出力がＯＦＦし０にな
る少し前にプリエンド信号を出力する。プリエンド信号
を受け取った側は、その信号によりこの電池パック１を
使用している負荷を止める、などの動作を行う。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a rechargeable battery pack of the present invention and a device connected as a load thereto. The rechargeable battery pack 1 has external terminals VSS and VDD
Besides, a pre-end signal output terminal is provided. The external terminal VSS outputs the lowest potential of the battery pack and outputs the external terminal V
The DD outputs the highest potential of the battery pack. The pre-end signal output terminal outputs the pre-end signal shortly before the output between VDD and VSS becomes OFF and becomes 0. The side receiving the pre-end signal performs an operation such as stopping the load using the battery pack 1 by the signal.
【０００８】図２は、本発明の充電式電池パックの一実
施例を示す回路ブロック図である。外部端子ＶＳＳまた
はＶＤＤにスイッチ回路４と過充放電・過電流制御回路
３を介して二次電池２が接続されている。スイッチ回路
４と過充放電・過電流制御回路３の抵抗値が理想的に０
である場合、外部端子ＶＤＤは二次電池２の最高電位を
出力し、ＶＳＳは最低電位を出力する。ＶＤＤ−ＶＳＳ
間にはプリエンド信号出力回路５が接続されており二次
電池２の電圧を検出する。FIG. 2 is a circuit block diagram showing an embodiment of the rechargeable battery pack of the present invention. The secondary battery 2 is connected to the external terminal VSS or VDD via the switch circuit 4 and the overcharge / discharge / overcurrent control circuit 3. The resistance values of the switch circuit 4 and the overcharge / discharge / overcurrent control circuit 3 are ideally 0.
, The external terminal VDD outputs the highest potential of the secondary battery 2, and VSS outputs the lowest potential. VDD-VSS
A pre-end signal output circuit 5 is connected in between to detect the voltage of the secondary battery 2.
【０００９】次に図３を基に図２の充電式電池パック１
の回路ブロックの動作を説明する。二次電池２が放電す
る事によって二次電池電圧Ｖ１が下がり、過放電検出電
圧Ｖ３よりわずかに高めに設定された検出電圧Ｖ２に達
する（図３（Ａ）参照）。プリエンド信号出力回路５が
検出電圧Ｖ２を検出しプリエンド信号出力端子にプリエ
ンド信号を出力する。このプリエンド信号は二次電池電
圧Ｖ１が過放電検出電圧Ｖ３に達するまで出力される
（図３（Ｂ）及び（Ｃ）参照）。Next, based on FIG. 3, the rechargeable battery pack 1 of FIG.
The operation of the circuit block will be described. When the secondary battery 2 is discharged, the secondary battery voltage V1 drops and reaches the detection voltage V2 set slightly higher than the overdischarge detection voltage V3 (see FIG. 3A). The pre-end signal output circuit 5 detects the detection voltage V2 and outputs the pre-end signal to the pre-end signal output terminal. This pre-end signal is output until the secondary battery voltage V1 reaches the overdischarge detection voltage V3 (see FIGS. 3B and 3C).
【００１０】さらに二次電池２の放電により二次電池電
圧Ｖ１が下がり、過放電検出電圧Ｖ３に達すると図２の
過充放電・過電流制御回路３が過放電を検出し出力信号
を出力する。過充放電・過電流検出回路３の出力はスイ
ッチ回路４の入力となりスイッチ回路４がＯＦＦする為
ＶＤＤ−ＶＳＳ間電圧Ｖ４が０になり負荷へのエネルギ
ーの供給をストップする。When the secondary battery voltage V1 further decreases due to the discharge of the secondary battery 2 and reaches the overdischarge detection voltage V3, the overcharge / discharge / overcurrent control circuit 3 of FIG. 2 detects the overdischarge and outputs an output signal. . The output of the overcharge / discharge / overcurrent detection circuit 3 becomes the input of the switch circuit 4 and the switch circuit 4 is turned off, so that the voltage V4 between VDD and VSS becomes 0 and the supply of energy to the load is stopped.
【００１１】図４は本発明の充電式電池パックの別の実
施例である。外部端子ＶＳＳまたはＶＤＤにスイッチ回
路４と過充放電・過電流制御回路３を介して二次電池２
が接続されている。本実施例では、プリエンド信号は過
充放電・過電流制御回路３の出力であり、スイッチ回路
４は過充放電・過電流制御回路３の出力信号を遅延回路
６で遅延した後の信号によって制御されるように構成さ
れている。ＶＤＤは二次電池２の最高電位を出力し、Ｖ
ＳＳは最低電位を出力する。FIG. 4 shows another embodiment of the rechargeable battery pack of the present invention. The secondary battery 2 is connected to the external terminal VSS or VDD via the switch circuit 4 and the overcharge / discharge / overcurrent control circuit 3.
Is connected. In this embodiment, the pre-end signal is the output of the overcharge / discharge / overcurrent control circuit 3, and the switch circuit 4 is controlled by the signal after the output signal of the overcharge / discharge / overcurrent control circuit 3 is delayed by the delay circuit 6. It is configured to be. VDD outputs the maximum potential of the secondary battery 2, and V
SS outputs the lowest potential.
【００１２】図５を基に過放電検出の場合について図４
の実施例を説明する。図５（Ａ）のように放電によって
二次電池電圧Ｖ１が下がり過放電検出電圧Ｖ３に達する
と、図４の過充放電・過電流制御回路３が過放電を検出
する。過充放電・過電流検出回路３の出力はプリエンド
信号出力Ｖ５となりプリエンド信号出力端子ヘ出力され
る一方、遅延回路６の入力となる。遅延回路６は一定の
時間の後スイッチ回路４をＯＦＦする信号を出力し、そ
の信号によりスイッチ回路４がＯＦＦする為ＶＤＤ−Ｖ
ＳＳ間電圧Ｖが０になり負荷へのエネルギーの供給をス
トップする（図５（Ｂ）参照）。プリエンド信号Ｖ５は
ＶＤＤ−ＶＳＳ間電圧が０になるまで出力される（図５
（Ｃ）参照）。FIG. 4 shows the case of over-discharge detection based on FIG.
An example will be described. When the secondary battery voltage V1 drops and reaches the overdischarge detection voltage V3 due to discharging as shown in FIG. 5A, the overcharge / discharge / overcurrent control circuit 3 of FIG. 4 detects overdischarge. The output of the overcharge / discharge / overcurrent detection circuit 3 becomes the pre-end signal output V5 and is output to the pre-end signal output terminal, while it becomes the input of the delay circuit 6. The delay circuit 6 outputs a signal that turns off the switch circuit 4 after a certain period of time, and the switch circuit 4 is turned off by the signal, so VDD-V
The voltage V between SS becomes 0 and the supply of energy to the load is stopped (see FIG. 5B). The pre-end signal V5 is output until the voltage between VDD and VSS becomes 0 (see FIG. 5).
(C)).
【００１３】過電流検出の場合も同様に過充放電・過電
流検出回路３が過電流を検出すると先ずプリエンド信号
出力端子にプリエンド信号出力Ｖ５を出力し、同じ信号
が遅延回路６に入力される。遅延回路６は一定の時間の
後スイッチ回路４をＯＦＦする信号を出力する。スイッ
チ回路４がＯＦＦになるまでプリエンド信号Ｖ５は出力
される。Similarly in the case of overcurrent detection, when the overcharge / discharge / overcurrent detection circuit 3 detects an overcurrent, first, the preend signal output V5 is output to the preend signal output terminal, and the same signal is input to the delay circuit 6. . The delay circuit 6 outputs a signal that turns off the switch circuit 4 after a fixed time. The pre-end signal V5 is output until the switch circuit 4 is turned off.
【００１４】[0014]
【発明の効果】本発明の充電式電池パックは、以上説明
したような形態で実施され、以下に記載されるような効
果を奏する。過充放電検出及び過電流制御回路がスイッ
チ回路をＯＦＦする信号を出力する以前にプリエンド出
力を出力する事により、負荷側の機器は二次電池からの
電圧電流の供給が停止することをその停止前に知ること
ができるので、退避動作等を行うことができる。つま
り、本発明は二次電池を使用する負荷側の誤動作を防止
する充電式電池パックを供給するものである。The rechargeable battery pack of the present invention is embodied in the form as described above and has the following effects. By outputting the pre-end output before the overcharge / discharge detection and overcurrent control circuit outputs the signal to turn off the switch circuit, the load side device stops the supply of voltage and current from the secondary battery. Since it is possible to know in advance, it is possible to perform a retract operation or the like. That is, the present invention provides a rechargeable battery pack that prevents malfunctions on the load side using a secondary battery.
【図１】本発明の充電式電池パックとそれに接続される
負荷としての機器を示す説明図である。FIG. 1 is an explanatory diagram showing a rechargeable battery pack of the present invention and a device as a load connected thereto.
【図２】本発明の充電式電池パックの実施例１の回路ブ
ロック図である。FIG. 2 is a circuit block diagram of Embodiment 1 of the rechargeable battery pack of the present invention.
【図３】本発明の実施例１の充電式電池パックの出力の
グラフである。FIG. 3 is a graph of the output of the rechargeable battery pack according to the first embodiment of the present invention.
【図４】本発明の充電式電池パックの別の実施例の回路
ブロック図である。FIG. 4 is a circuit block diagram of another embodiment of the rechargeable battery pack of the present invention.
【図５】本発明の充電式電池パック別の実施例の出力の
グラフである。FIG. 5 is a graph of the output of another embodiment of the rechargeable battery pack of the present invention.
【図６】従来の充電式電池パックの回路ブロック図であ
る。FIG. 6 is a circuit block diagram of a conventional rechargeable battery pack.
【図７】従来の充電式電池パックの出力のグラフであ
る。FIG. 7 is a graph of output of a conventional rechargeable battery pack.
１ 充電式電池パック ２ 二次電池 ３ 過充放電・過電流制御回路 ４ スイッチ回路 ５ プリエンド信号出力回路 ６ 遅延回路 1 Rechargeable battery pack 2 Secondary battery 3 Overcharge / discharge / overcurrent control circuit 4 Switch circuit 5 Pre-end signal output circuit 6 Delay circuit
Claims (1)
し、充放電を制御する充電式電池パックにおいて、放電
を停止する前に該充電式電池パックがプリエンド信号を
出力する事を特徴とした充電式電池パック。1. A rechargeable battery pack which detects an overcharge / discharge / overcurrent state of a secondary battery and controls charge / discharge, wherein the rechargeable battery pack outputs a pre-end signal before stopping the discharge. Characteristic rechargeable battery pack.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8138869A JP2990591B2 (en) | 1996-05-31 | 1996-05-31 | Rechargeable battery pack |
| CN97113796A CN1170250A (en) | 1996-05-31 | 1997-05-31 | Rechargeable battery pack |
| KR1019970022515A KR100299023B1 (en) | 1996-05-31 | 1997-05-31 | Rechargeable battery pack |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8138869A JP2990591B2 (en) | 1996-05-31 | 1996-05-31 | Rechargeable battery pack |
| US08/866,621 US6051956A (en) | 1997-05-30 | 1997-05-30 | Rechargeable battery pack with pre-end signal output terminal and electronic device containing rechargeable battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09320641A true JPH09320641A (en) | 1997-12-12 |
| JP2990591B2 JP2990591B2 (en) | 1999-12-13 |
Family
ID=26471811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8138869A Expired - Fee Related JP2990591B2 (en) | 1996-05-31 | 1996-05-31 | Rechargeable battery pack |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2990591B2 (en) |
| CN (1) | CN1170250A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009245635A (en) * | 2008-03-28 | 2009-10-22 | Panasonic Electric Works Co Ltd | Battery pack |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8981723B2 (en) | 2009-12-24 | 2015-03-17 | Toyota Jidosha Kabushiki Kaisha | Air battery system |
| US10031186B2 (en) * | 2015-11-24 | 2018-07-24 | Honeywell International Inc. | System for assuring safe operation of batteries |
-
1996
- 1996-05-31 JP JP8138869A patent/JP2990591B2/en not_active Expired - Fee Related
-
1997
- 1997-05-31 CN CN97113796A patent/CN1170250A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009245635A (en) * | 2008-03-28 | 2009-10-22 | Panasonic Electric Works Co Ltd | Battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2990591B2 (en) | 1999-12-13 |
| CN1170250A (en) | 1998-01-14 |
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