JP2000260485A - Battery pack having display device for battery state - Google Patents
Battery pack having display device for battery stateInfo
- Publication number
- JP2000260485A JP2000260485A JP11066053A JP6605399A JP2000260485A JP 2000260485 A JP2000260485 A JP 2000260485A JP 11066053 A JP11066053 A JP 11066053A JP 6605399 A JP6605399 A JP 6605399A JP 2000260485 A JP2000260485 A JP 2000260485A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- display device
- remaining capacity
- battery pack
- display
- 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
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- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電池残存容量等の
表示装置を有する電池パックに関し、特に構成が簡単で
正確な残存容量の表示が可能なリチウムイオン電池等の
電池パックに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack having a display device such as a battery remaining capacity, and more particularly to a battery pack such as a lithium ion battery having a simple structure and capable of accurately displaying the remaining capacity.
【０００２】[0002]
【従来の技術】携帯電話、ノート型パソコン、カメラ一
体型ビデオレコーダ等の電源としては、小型で大容量の
密閉型電池であるニッケル水素電池、リチウムイオン二
次電池等の非水電解液電池が用いられている。電池を電
源とした機器においては、電池の充電容量の検出と表示
の機能を有する機器も用いられているが、そのような機
器においても電池使用機器から電池パックを取り外した
場合には、電池パックの電池の残存容量を知ることはで
きなかった。2. Description of the Related Art Non-aqueous electrolyte batteries such as nickel-metal hydride batteries and lithium ion secondary batteries, which are small and large-capacity sealed batteries, are used as power sources for mobile phones, notebook computers, video recorders with cameras, and the like. Used. In a device using a battery as a power source, a device having a function of detecting and displaying a charged capacity of a battery is also used.However, even in such a device, when a battery pack is removed from a device using a battery, a battery pack is required. It was not possible to know the remaining capacity of the battery.
【０００３】そこで、電池パック側に、充放電電圧、充
放電電流、および残存容量の監視を行うための充放電制
御装置を設けるとともに、残存容量表示機能を設けた電
池パックが提案されている。例えば、特開平５−２９９
１２３号公報には、電池パック側に、電池の充放電制御
装置を有し、電池パックの端子部の短絡時に電池および
制御装置を保護する残存容量表示機能付き充電式二次電
池パック電池が記載されており、また、特開平１０−１
６２８６２号公報には、リチウムイオン電池の出力電
圧、電流や残存電流を監視したり、電池パックを取り付
けた電子機器との間で通信を行う等のために内蔵したＣ
ＰＵの暴走時のリセットスイッチを設けるとともに、残
存容量の表示をさせるためのスイッチを設けた電池パッ
クが記載されている。Therefore, a battery pack provided with a charge / discharge control device for monitoring the charge / discharge voltage, charge / discharge current, and remaining capacity on the battery pack side, and having a remaining capacity display function has been proposed. For example, JP-A-5-299
No. 123 discloses a rechargeable secondary battery pack battery with a remaining capacity display function that has a battery charge / discharge control device on the battery pack side and protects the battery and the control device when a terminal of the battery pack is short-circuited. And Japanese Patent Laid-Open No. 10-1
No. 62,862 discloses a built-in C for monitoring the output voltage, current and remaining current of a lithium ion battery, and performing communication with an electronic device equipped with a battery pack.
A battery pack provided with a reset switch when the PU runs away and a switch for displaying the remaining capacity is described.
【０００４】このような電池パックにおいては、従来、
残存容量の表示は、一般には、複数の発光ダイオードを
用いて行っており、発光ダイオードの発光個数によっ
て、電池容量を表示したり、容量に応じて発光色の異な
る複数の発光ダイオードを用いることが行われていた。
が、残存容量を他段階に表示するためには、発光ダイオ
ードを複数個備えたり、あるいは発光色の異なる発光ダ
イオードを複数個を備える等の手段がとられていた。In such a battery pack, conventionally,
The display of the remaining capacity is generally performed using a plurality of light emitting diodes, and it is possible to display the battery capacity according to the number of light emitting diodes, or to use a plurality of light emitting diodes having different emission colors according to the capacity. It was done.
However, in order to display the remaining capacity at another stage, means such as providing a plurality of light emitting diodes or providing a plurality of light emitting diodes having different emission colors has been taken.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、電池の残存
容量の表示機能を有する電池パックにおいて、残存容量
の表示を１個の発光ダイオードのみによっても、多段階
に表示することができる残存容量表示装置を有する電池
パックを提供することを課題とするものである。SUMMARY OF THE INVENTION The present invention relates to a battery pack having a function of displaying the remaining capacity of a battery. The remaining capacity can be displayed in multiple stages by using only one light emitting diode. It is an object to provide a battery pack having a display device.
【０００６】[0006]
【課題を解決するための手段】本発明は、電池の状態の
表示装置を有する電池パックにおいて、残存容量検出手
段によって検出した残存容量に応じたデューティー比を
有するパルス信号を発生するデューティー比可変パルス
信号発生手段、および該パルス信号によって輝度もしく
は発光周期の少なくともいずれか一方を残存容量に応じ
て変化して表示する電池の状態の表示装置を有する電池
パックである。また、表示装置として、満充電状態に所
定の時間以上放置した後に動作する満充電状態放置表示
装置を有する前記の電池の状態の表示装置を有する電池
パックである。表示装置として、電池使用履歴蓄積手段
が初期充電状態を示す際には初期充電状態を表示する電
池状態表示装置を有する前記の電池の状態の表示装置を
有する電池パックである。SUMMARY OF THE INVENTION The present invention relates to a duty ratio variable pulse for generating a pulse signal having a duty ratio corresponding to a remaining capacity detected by a remaining capacity detection means in a battery pack having a battery state display device. A battery pack including a signal generation unit and a battery state display device that displays at least one of luminance and a light emission cycle in accordance with a remaining capacity according to the pulse signal. Further, the present invention provides a battery pack including the above-described battery state display device including a fully charged state display device that operates after being left in a fully charged state for a predetermined time or more. The display device is a battery pack having the battery status display device having a battery status display device for displaying the initial charge state when the battery usage history storage means indicates the initial charge state.
【０００７】[0007]
【発明の実施の形態】本発明の、残存容量表示機能を有
する電池パックは、通電電気量に基づいて求められた残
存容量に応じたデューティー比で、表示手段の輝度変
化、あるいは点滅を行ったので、１個の表示素子のみで
も多段階の電池の残存容量の表示を可能としたものであ
る。BEST MODE FOR CARRYING OUT THE INVENTION In a battery pack having a remaining capacity display function according to the present invention, the luminance of the display means changes or blinks at a duty ratio corresponding to the remaining capacity obtained based on the amount of supplied electricity. Therefore, it is possible to display the remaining capacity of the battery in multiple stages using only one display element.
【０００８】以下に、図面を参照して本発明を説明す
る。図１は、本発明の電池パックの一実施例を説明する
図である。電池パック１には、少なくとも１個の電池２
を有しており、電池使用機器もしくは充電器との接続端
子３ａおよび３ｂが設けられており、接続端子には、電
池の充放電を制御し、残存容量の表示手段等の電池パッ
ク内のすべてを制御する主制御手段４が接続されてい
る。Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating an embodiment of the battery pack of the present invention. The battery pack 1 includes at least one battery 2
And connection terminals 3a and 3b for connection to a device using a battery or a charger are provided. The connection terminals control charging / discharging of the battery, and all the components in the battery pack such as a display unit for a remaining capacity are provided. Is connected to the main control means 4 for controlling the power supply.
【０００９】接続端子３ａおよび３ｂから充電電流が供
給されると、電池電流検出手段５によって電池に充電さ
れる電流を検出し、検出した電流値と充放電時間検出手
段６によって検出した充電時間から通電電気量演算手段
７において、通電電気量を演算し、残存容量記録手段８
の値を残存容量を現時点での残存容量に変更する。When the charging current is supplied from the connection terminals 3a and 3b, the current charged in the battery is detected by the battery current detecting means 5 and the detected current value and the charging time detected by the charging / discharging time detecting means 6 are used. The energized electricity amount calculating means 7 calculates the energized electricity quantity and outputs the remaining capacity recording means 8
Is changed from the remaining capacity to the current remaining capacity.
【００１０】満充電後に、電池パックを電池使用機器に
取り付けて、放電を開始すると、電池電流検出手段５は
放電電流を検出し、充放電時間検出手段６は放電時間を
検出し、放電電流と放電時間から通電電気量演算手段７
において、放電した電気量を演算し、残存容量記録手段
８の残存容量を変更する。After the battery pack is fully charged and the battery pack is attached to the battery-equipped device and discharging is started, the battery current detecting means 5 detects the discharging current, and the charging / discharging time detecting means 6 detects the discharging time. Electricity calculation means 7 based on discharge time
, The amount of discharged electricity is calculated, and the remaining capacity of the remaining capacity recording means 8 is changed.
【００１１】残存容量表示スイッチ９が投入されると、
残存容量信号出力手段１０は、デューティー比可変パル
ス信号発生手段１１に対して残存容量に応じた信号を発
生する。デューティー比可変パルス信号発生手段１１
は、残存容量に応じたデューティー比の矩形波パルス信
号を発生し、表示手段１２を駆動する。表示手段１２
は、パルス信号のデューティー比に応じて、発光輝度、
あるいは点滅周波数を変化させることによって、現時点
での残存容量を表示することができる。以上の説明で
は、残存容量表示手段は、残存容量表示スイッチが投入
された際に残存容量表示機能が動作する例について述べ
たが、表示手段の消費電力、電池容量によっては、常時
残存容量表示手段が動作するものであっても良い。When the remaining capacity display switch 9 is turned on,
The remaining capacity signal output means 10 generates a signal corresponding to the remaining capacity to the duty ratio variable pulse signal generating means 11. Duty ratio variable pulse signal generating means 11
Generates a rectangular wave pulse signal having a duty ratio according to the remaining capacity, and drives the display unit 12. Display means 12
Is the emission luminance,
Alternatively, the remaining capacity at the present time can be displayed by changing the blinking frequency. In the above description, the remaining capacity display means has been described as an example in which the remaining capacity display function operates when the remaining capacity display switch is turned on. However, depending on the power consumption of the display means and the battery capacity, the remaining capacity display means always operates. May operate.
【００１２】また、デューティー比可変パルス発生手段
は、電池パックの制御装置に使用するマイコン等の電池
パック制御手段のパルス幅変調出力を利用し、出力信号
を発光ダイオード等の表示素子に接続することによって
デューティー比を可変した表示が可能となる。あるい
は、ＡＮＤゲート、ＯＲゲート回路を用いて基準パルス
から、７５％、５０％、２５％等のパルスを発生させて
も良い。The duty ratio variable pulse generating means uses a pulse width modulated output of a battery pack control means such as a microcomputer used for a battery pack control device, and connects an output signal to a display element such as a light emitting diode. As a result, a display in which the duty ratio is changed becomes possible. Alternatively, a pulse of 75%, 50%, 25%, or the like may be generated from the reference pulse by using an AND gate or an OR gate circuit.
【００１３】また、電池の残存容量表示手段は、発光ダ
イオード、液晶表示装置のような電界駆動型の表示装置
を用いることができる。また、発光ダイオード等の表示
素子を１個用いるのみで輝度変化、あるいは点滅周期の
変化によって行うことができるが、複数個を用いて表示
個数あるいは表示色を変える等の方法と、輝度変化、あ
るいは点滅周期の変化とを組み合わせても良い。Further, as the battery remaining capacity display means, an electric field drive type display device such as a light emitting diode or a liquid crystal display device can be used. In addition, the luminance can be changed only by using one display element such as a light-emitting diode, or by changing the blinking period. The change of the blinking cycle may be combined.
【００１４】図１の電池パックでは、残存容量検出手段
２０は、電池電流検出手段５、充放電時間検出手段６か
ら通電電気量演算手段７によって構成され、通電電気量
の検出によって残存容量を検出したが、残存容量は、電
池の電圧の変化等の検出等に行うものであっても良い。
以下に、電池の残存容量と発光輝度、あるいは点滅間隔
の一例を表に示す。In the battery pack shown in FIG. 1, the remaining capacity detecting means 20 is composed of a battery current detecting means 5, a charging / discharging time detecting means 6 and an energized electricity calculating means 7, and the remaining capacity is detected by detecting the energized electricity. However, the remaining capacity may be used for detecting a change in battery voltage and the like.
The following table shows an example of the remaining capacity of the battery and the light emission luminance or the blinking interval.
【００１５】[0015]
【表１】 残存容量 発光輝度比 点滅間隔 ７５％以上 １００％ １．５秒 ５０％以上７５％未満 ７５％ １秒 ２５％以上５０％未満 ５０％ ０．５秒 ２５％未満 ２５％ ０．２５秒[Table 1] Remaining capacity Light emission luminance ratio Flashing interval 75% or more 100% 1.5 seconds 50% or more and less than 75% 75% 1 second 25% or more and less than 50% 50% 0.5 seconds less than 25% 25% 0.25 Second
【００１６】図２に、本発明における残存容量とデュー
ティー比の関係を説明する。本発明においては、デュー
ティー比は、満充電に相当する周期Ａに対して、残存容
量に相当する期間Ｂを意味し、デューティー比が、満充
電に対する残存容量の比に相当する。また、本発明によ
って、満充電時に発光ダイオードを点灯すると、発光ダ
イオードの点灯よって充電されたエネルギーを消費し
て、満充電状態で高温に放置された場合の電池の劣化等
を防止することが可能となる。FIG. 2 illustrates the relationship between the remaining capacity and the duty ratio in the present invention. In the present invention, the duty ratio means a period B corresponding to the remaining capacity with respect to a cycle A corresponding to the full charge, and the duty ratio corresponds to a ratio of the remaining capacity to the full charge. In addition, according to the present invention, when the light emitting diode is turned on at the time of full charge, the charged energy is consumed by lighting of the light emitting diode, and it is possible to prevent deterioration of the battery when left at a high temperature in a fully charged state. Becomes
【００１７】また、図３には、本発明の他の実施例を説
明する図である。図３に示した電池パックは、図１に示
した電池パックにおいて、電池状態検出手段１３を有
し、電池状態検出手段１３が満充電後放置されているこ
とを検出した場合には、放置時間監視手段１４を駆動
し、満充電後の放置時間があらかじめ設定した値よりも
大きくなると、満充電放置表示手段１５を駆動して、満
充電になった後に長時間放置されていることを表示す
る。また、電池電圧測定手段１６によって電池電圧を監
視し、所定の電圧以下となった場合には、満充電経過時
間報知表示手段を消灯する。これにより満充電後長時間
放置された場合に注意を喚起することができる。FIG. 3 is a diagram for explaining another embodiment of the present invention. The battery pack shown in FIG. 3 has the battery state detecting means 13 in the battery pack shown in FIG. 1, and when the battery state detecting means 13 detects that the battery pack is left idle after being fully charged, When the monitoring unit 14 is driven, and the idle time after full charge is greater than a preset value, the full charge idle display unit 15 is driven to display that the battery has been left idle for a long time after full charge. . Also, the battery voltage is monitored by the battery voltage measuring means 16, and when the battery voltage falls below a predetermined voltage, the full charge elapsed time notification display means is turned off. This can alert the user when the battery is left for a long time after being fully charged.
【００１８】また、図４には、本発明の他の実施例を説
明する図である。図４に示した電池パックは、図１に示
した電池パックにおいて、電池表示手段として、電池パ
ックの組立時の検査工程での状態報知機能をさらに付加
したものである。電池パックは、電池パック内に組み込
まれた電池の特性に応じて制御することによって、電池
を特性をより充分に発揮させることが可能となる。そこ
で、電池パックを組み立てて最初に充電された場合や、
電池パック内の制御装置がリセットされたような場合に
は、充電の後に充電終止電圧まで放電させることによっ
て、電池の特性を電池パック内の記憶手段に記憶させる
ことが必要となる。FIG. 4 is a diagram for explaining another embodiment of the present invention. The battery pack shown in FIG. 4 is the same as the battery pack shown in FIG. 1 except that a function of displaying a state in an inspection step at the time of assembling the battery pack is further added as a battery display unit. By controlling the battery pack in accordance with the characteristics of the battery incorporated in the battery pack, it becomes possible for the battery to exhibit its characteristics more sufficiently. So, when the battery pack is assembled and charged first,
When the control device in the battery pack is reset, it is necessary to store the characteristics of the battery in the storage means in the battery pack by discharging the battery to the end-of-charge voltage after charging.
【００１９】図４に示した、電池パックにおいては、電
池状態検出手段１３とともに電池使用履歴蓄積手段１７
を有し、電池使用履歴蓄積手段において、電池パック組
立後の初期充電、あるいは電池パックの電池使用履歴蓄
積手段のリセット後の初期充電である場合には、初期充
電表示手段１７を点灯、あるいは点滅して初期充電状態
であることを知らせ、一度放電終止電圧まで放電した後
に、初期充電表示手段１８を消灯する。これによって、
電池の充放電サイクルの試験を確実に完了したもののみ
を出荷することができる。In the battery pack shown in FIG. 4, the battery use history storage means 17 and the battery state detection means 13 are used.
In the battery use history storage means, if the initial charge after assembling the battery pack or the initial charge after reset of the battery use history storage means of the battery pack, the initial charge display means 17 is turned on or blinks. To notify that the battery is in the initial charge state, and after the battery is once discharged to the discharge end voltage, the initial charge display means 18 is turned off. by this,
Only those batteries that have been successfully tested for charge and discharge cycles can be shipped.
【００２０】[0020]
【発明の効果】本発明の電池パックの電池の残存容量表
示装置は、表示素子１個で多段階の残存容量を表示する
ことができ、また満充電状態で長時間放置することを避
けることができ、さらに製造時において、充放電検査漏
れを表示することができるので、製造される電池パック
の信頼性が高いものとなる。According to the present invention, the display device for the remaining capacity of the battery of the battery pack can display the remaining capacity in multiple stages with one display element, and can avoid leaving the battery in a fully charged state for a long time. In addition, since the charge / discharge inspection omission can be displayed at the time of manufacture, the reliability of the manufactured battery pack becomes high.
【図１】図１は、本発明の電池パックの一実施例を説明
する図である。FIG. 1 is a diagram illustrating an embodiment of a battery pack according to the present invention.
【図２】図２は、本発明における残存容量とデューティ
ー比の関係を説明する図である。FIG. 2 is a diagram illustrating a relationship between a remaining capacity and a duty ratio in the present invention.
【図３】図３は、本発明の電池パックの他の実施例を説
明する図である。FIG. 3 is a diagram illustrating another embodiment of the battery pack of the present invention.
【図４】図４は、本発明の電池パックの他の実施例を説
明する図である。FIG. 4 is a diagram illustrating another embodiment of the battery pack of the present invention.
【符号の説明】 １…電池パック、２…電池、３ａ，３ｂ…接続端子、４
…主制御手段、５…電池電流検出手段、６…充放電時間
検出手段、７…通電電気量演算手段、８…残存容量記録
手段、９…残存容量表示スイッチ、１０…残存容量信号
出力手段、１１…デューティー比可変パルス信号発生手
段、１２…表示手段、１３…電池状態検出手段、１４…
放置時間監視手段、１５…満充電放置表示手段、１６…
電池電圧測定手段、１７…電池使用履歴蓄積手段、１８
…初期充電表示手段、２０…残存容量検出手段、Ａ…満
充電に相当する周期、Ｂ…残存容量に相当する期間[Description of Signs] 1 ... Battery pack, 2 ... Battery, 3a, 3b ... Connection terminal, 4
... Main control means, 5 ... Battery current detection means, 6 ... Charge / discharge time detection means, 7 ... Electric electricity calculation means, 8 ... Remaining capacity recording means, 9 ... Remaining capacity display switch, 10 ... Remaining capacity signal output means, 11: Duty ratio variable pulse signal generating means, 12: Display means, 13: Battery state detecting means, 14 ...
Leaving time monitoring means, 15 ... Full charge leaving display means, 16 ...
Battery voltage measurement means, 17 ... Battery usage history accumulation means, 18
... initial charge display means, 20 ... remaining capacity detection means, A ... period corresponding to full charge, B ... period corresponding to remaining capacity
Claims (3)
クにおいて、残存容量検出手段によって検出した残存容
量に応じたデューティー比を有するパルス信号を発生す
るデューティー比可変パルス信号発生手段、および該パ
ルス信号によって輝度もしくは発光周期の少なくともい
ずれか一方を残存容量に応じて変化して表示する表示装
置を有することを特徴とする電池の状態の表示装置を有
する電池パック。1. A duty cycle variable pulse signal generating means for generating a pulse signal having a duty ratio corresponding to a remaining capacity detected by a remaining capacity detecting means in a battery pack having a battery state display device, and the pulse signal A battery pack having a display device for displaying a state of a battery, the display device having a display device for displaying at least one of the luminance and the light emission cycle in accordance with the remaining capacity.
間以上放置した後に、動作する満充電状態放置表示装置
を有することを特徴とする請求項１記載の表示装置を有
する電池パック。2. The battery pack having a display device according to claim 1, wherein the display device has a fully charged state display device that operates after being left in a fully charged state for a predetermined time or more.
が初期充電状態を示す際には初期充電状態を表示する電
池状態表示装置を有することを特徴とする請求項１また
は２記載の電池の状態の表示装置を有する電池パック。3. The battery status according to claim 1, further comprising a battery status display device for displaying the initial charge status when the battery usage history storage means indicates the initial charge status as the display device. A battery pack having the display device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06605399A JP3366276B2 (en) | 1999-03-12 | 1999-03-12 | Battery pack having battery status display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06605399A JP3366276B2 (en) | 1999-03-12 | 1999-03-12 | Battery pack having battery status display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000260485A true JP2000260485A (en) | 2000-09-22 |
| JP3366276B2 JP3366276B2 (en) | 2003-01-14 |
Family
ID=13304759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06605399A Expired - Lifetime JP3366276B2 (en) | 1999-03-12 | 1999-03-12 | Battery pack having battery status display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3366276B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674454A (en) * | 2012-09-24 | 2014-03-26 | 微宏动力***（湖州）有限公司 | Battery-pack leakage-liquid detection system |
-
1999
- 1999-03-12 JP JP06605399A patent/JP3366276B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674454A (en) * | 2012-09-24 | 2014-03-26 | 微宏动力***（湖州）有限公司 | Battery-pack leakage-liquid detection system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3366276B2 (en) | 2003-01-14 |
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