JPH0922741A - Battery level estimation device - Google Patents
Battery level estimation deviceInfo
- Publication number
- JPH0922741A JPH0922741A JP7169519A JP16951995A JPH0922741A JP H0922741 A JPH0922741 A JP H0922741A JP 7169519 A JP7169519 A JP 7169519A JP 16951995 A JP16951995 A JP 16951995A JP H0922741 A JPH0922741 A JP H0922741A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- secondary battery
- data
- voltage
- current
- 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
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
- Secondary Cells (AREA)
Abstract
(57)【要約】
【構成】機器１４は電池のエネルギ残量を推定する際
に、二次電池３に備わった不揮発性メモリ１に書き込ま
れた電池に関する履歴データ４を使用する。
【効果】機器は使用中の二次電池のエネルギ残量をより
正確に推定し表示することができるので、機器の使い勝
手が向上する。
(57) [Summary] [Structure] The device 14 uses the historical data 4 regarding the battery written in the non-volatile memory 1 provided in the secondary battery 3 when estimating the remaining energy level of the battery. [Effect] Since the device can more accurately estimate and display the remaining energy level of the secondary battery in use, the usability of the device is improved.
Description
【０００１】[0001]
【産業上の利用分野】本発明は電池残量推定装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery residual quantity estimating device.
【０００２】[0002]
【従来の技術】特願平５−３０７７１８号明細書に記載
のように、二次電池を使用した機器の稼働可能時間等の
予測における今後の消費電流量推定と二次電池のエネル
ギ残量推定において、二次電池のエネルギ残量推定は二
次電池の電圧を測定することによりおこなっていた。2. Description of the Related Art As described in Japanese Patent Application No. Hei 5-307718, future estimation of consumed current amount and estimation of remaining energy of secondary battery in prediction of operable time of equipment using secondary battery In the above, the estimation of the remaining energy of the secondary battery was performed by measuring the voltage of the secondary battery.
【０００３】[0003]
【発明が解決しようとする課題】二次電池は充電・放電
を繰り返すにつれ劣化し、二次電池が放電できる電荷総
量は減っていくため同じ型式の二次電池であっても過去
の使用来歴により放電特性は異なる。従来技術では、電
池の電圧や電池が装着されてからの使用電流量を測定
し、その値を基に電池のエネルギ残量を推定するという
方法であるため、電池のエネルギ残量推定値と実際の電
池のエネルギ残量の間の誤差が大きかった。The secondary battery deteriorates as it is repeatedly charged and discharged, and the total amount of charge that can be discharged by the secondary battery decreases. Discharge characteristics are different. In the conventional technology, the voltage of the battery and the amount of current used after the battery is installed are measured, and the remaining energy level of the battery is estimated based on the measured values. There was a large error between the remaining energy levels of the batteries.
【０００４】本発明の目的は、機器に使用している二次
電池のエネルギ残量をより正確に推定することにある。An object of the present invention is to more accurately estimate the remaining energy level of the secondary battery used in the equipment.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、本発明は電池のエネルギ残量を推定する際に、電池
の電圧や電池が装着されてからの使用電流量の測定値の
他に、二次電池に備わった不揮発性メモリから過去に書
き込まれた電池に関する履歴データを読みだし、その履
歴データを使用する。In order to achieve the above object, the present invention, when estimating the remaining amount of energy of a battery, in addition to the measured value of the voltage of the battery and the amount of current used after the battery is installed, The history data regarding the battery written in the past is read from the nonvolatile memory provided in the secondary battery, and the history data is used.
【０００６】[0006]
【作用】機器は二次電池に備わった不揮発性メモリの電
池に関する履歴データにより二次電池の放電特性を推定
できるので、電池の電圧や電池が装着されてからの使用
電流量の測定値を推定された電池の放電特性に照す事に
より、機器に使用している二次電池のエネルギ残量をよ
り正確に推定することができる。[Function] Since the device can estimate the discharge characteristic of the secondary battery from the history data of the battery in the non-volatile memory provided in the secondary battery, it estimates the measured value of the battery voltage and the amount of current used after the battery is mounted. The remaining energy level of the secondary battery used in the device can be more accurately estimated by referring to the discharged characteristics of the battery.
【０００７】[0007]
【実施例】以下、本発明の一実施例を図１により説明す
る。An embodiment of the present invention will be described below with reference to FIG.
【０００８】二次電池３を電源とする機器１４の内部の
マイクロ・プロセッサ１１は、現在の電圧を電圧データ
９として電圧測定器５から読み取り、二次電池３が機器
に装着されてから消費した電流量を、電流測定器６から
の電流データ８の積分値として計算し、また二次電池３
の放電特性は外気温にも依存するため温度センサ７の温
度データ１０も読み取る。さらにマイクロ・プロセッサ
１１は、二次電池３に備わった書替え可能な不揮発性メ
モリ１（以下、メモリ１）からの電池履歴データ４を基
に二次電池３の放電特性を推定し、各データを照らし合
わせることにより二次電池３のエネルギ残量を推定す
る。表示器１２にはマイクロ・プロセッサ１１からの表
示制御信号１３によりエネルギ残量の推定値が表示され
る。The microprocessor 11 inside the device 14 using the secondary battery 3 as a power source reads the current voltage as voltage data 9 from the voltage measuring device 5, and consumes it after the secondary battery 3 is attached to the device. The current amount is calculated as an integrated value of the current data 8 from the current measuring device 6, and the secondary battery 3
Since the discharge characteristic of 1 depends on the outside air temperature, the temperature data 10 of the temperature sensor 7 is also read. Further, the microprocessor 11 estimates the discharge characteristic of the secondary battery 3 based on the battery history data 4 from the rewritable nonvolatile memory 1 (hereinafter, memory 1) provided in the secondary battery 3, and collects each data. The remaining amount of energy of the secondary battery 3 is estimated by comparing them. An estimated value of the remaining amount of energy is displayed on the display 12 by the display control signal 13 from the microprocessor 11.
【０００９】尚、図１の中の各構成要素は既存の技術で
充分実現可能である。又、メモリ１をマイクロ・プロセ
ッサ１１で直接制御すると制御線やデータ線が多くなる
場合は、マイクロ・プロセッサ１１とメモリ１の間に適
当なインターフェース回路を設けても良い。インターフ
ェース回路例は、二次電池３にもマイクロ・プロセッサ
を備えて、そのマイクロ・プロセッサがマイクロ・プロ
セッサ１１のコマンドによりメモリ１の制御を行う方法
などがあり、さらにシリアルデータ通信の手法を活用あ
るいは電源線への信号重畳の手法を活用することで、二
次電池３と機器１４の間の信号線を少なくすることがで
きる。Each component in FIG. 1 can be sufficiently realized by the existing technology. Further, if the control line or the data line is increased when the memory 1 is directly controlled by the microprocessor 11, an appropriate interface circuit may be provided between the microprocessor 11 and the memory 1. As an example of the interface circuit, there is a method in which the secondary battery 3 is also provided with a microprocessor, and the microprocessor controls the memory 1 by the command of the microprocessor 11. By utilizing the technique of superimposing a signal on the power supply line, the number of signal lines between the secondary battery 3 and the device 14 can be reduced.
【００１０】次に電池履歴データ４について図２により
説明する。Next, the battery history data 4 will be described with reference to FIG.
【００１１】電池履歴データ４は、充電時に充電器から
書き込まれる充電に関するデータ１５と、機器１４から
書き込まれる放電に関するデータ１６から構成される。
充電に関するデータ１５は、充電開始時に二次電池３の
電圧や、充電した電流量、充電した電流量に対する二次
電池３の電圧上昇の特性、充電した日付け、充電回数な
どである。放電に関するデータ１６は、機器１４が電流
を消費したときに観測される電圧降下の特性などであ
る。The battery history data 4 is composed of charging data 15 written from the charger at the time of charging and discharging data 16 written from the device 14.
The data 15 regarding charging includes the voltage of the secondary battery 3 at the start of charging, the amount of charged current, the characteristics of the voltage increase of the secondary battery 3 with respect to the amount of charged current, the date of charging, the number of times of charging, and the like. The discharge-related data 16 is the characteristics of the voltage drop observed when the device 14 consumes current.
【００１２】[0012]
【発明の効果】本発明によれば、機器は使用中の二次電
池のエネルギ残量をより正確に推定し表示することがで
きるので、機器の使い勝手が向上する。According to the present invention, since the device can more accurately estimate and display the remaining energy level of the secondary battery in use, the usability of the device is improved.
【図１】電池残量推定装置の回路ブロック図。FIG. 1 is a circuit block diagram of a battery remaining amount estimation device.
【図２】電池履歴データ４の説明図。FIG. 2 is an explanatory diagram of battery history data 4.
１…不揮発性メモリ、２…二次電池セル、３…二次電
池、４…電池履歴データ、５…電圧測定器、６…電流測
定器、７…温度センサ、８…電流データ、９…電圧デー
タ、１０…温度データ、１１…マイクロ・プロセッサ、
１２…表示器、１３…表示制御信号、１４…二次電池を
電源とする機器。1 ... Nonvolatile memory, 2 ... Secondary battery cell, 3 ... Secondary battery, 4 ... Battery history data, 5 ... Voltage measuring device, 6 ... Current measuring device, 7 ... Temperature sensor, 8 ... Current data, 9 ... Voltage Data, 10 ... Temperature data, 11 ... Microprocessor,
12 ... Display device, 13 ... Display control signal, 14 ... Equipment powered by secondary battery.
Claims (1)
電池と、前記二次電池の充電器と、前記二次電池を電源
とする機器において、前記機器は電池のエネルギ残量を
推定する際に、前記二次電池に備わった前記不揮発性メ
モリに書き込まれた電池に関する履歴データを使用する
ことを特徴とする電池残量推定装置。1. A rechargeable non-volatile memory rechargeable battery, a charger for the rechargeable battery, and a device powered by the rechargeable battery, wherein the device estimates the remaining energy level of the battery. At this time, the battery residual amount estimating device using history data regarding the battery written in the non-volatile memory provided in the secondary battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7169519A JPH0922741A (en) | 1995-07-05 | 1995-07-05 | Battery level estimation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7169519A JPH0922741A (en) | 1995-07-05 | 1995-07-05 | Battery level estimation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0922741A true JPH0922741A (en) | 1997-01-21 |
Family
ID=15888016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7169519A Pending JPH0922741A (en) | 1995-07-05 | 1995-07-05 | Battery level estimation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0922741A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1057652A3 (en) * | 1999-05-26 | 2001-08-22 | Seiko Epson Corporation | Printer and charging device |
| US6433513B1 (en) | 1999-08-30 | 2002-08-13 | Nec Infrontia Corporation | Method, apparatus and computer readable recorded medium for secondary battery life evaluation |
-
1995
- 1995-07-05 JP JP7169519A patent/JPH0922741A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1057652A3 (en) * | 1999-05-26 | 2001-08-22 | Seiko Epson Corporation | Printer and charging device |
| US6433513B1 (en) | 1999-08-30 | 2002-08-13 | Nec Infrontia Corporation | Method, apparatus and computer readable recorded medium for secondary battery life evaluation |
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