JP2003017138A - Cell pack - Google Patents
Cell packInfo
- Publication number
- JP2003017138A JP2003017138A JP2001202944A JP2001202944A JP2003017138A JP 2003017138 A JP2003017138 A JP 2003017138A JP 2001202944 A JP2001202944 A JP 2001202944A JP 2001202944 A JP2001202944 A JP 2001202944A JP 2003017138 A JP2003017138 A JP 2003017138A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- charging
- remaining capacity
- secondary battery
- deterioration
- 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
- 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、二次電池の劣化を
支配する保存状態及び充放電状態のデータを記録して二
次電池が劣化に至った履歴を検知する機能を備えた電池
パックに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack having a function of recording data of a storage state and a charging / discharging state that govern deterioration of a secondary battery and detecting a history of deterioration of the secondary battery. It is a thing.
【０００２】[0002]
【従来の技術】携帯電話機やノート型パーソナルコンピ
ュータ（以下、ノートパソコン）などの電源は二次電池
を用いた電池パックが用いられている。電池パックは、
過充電や過放電等から二次電池を保護する電池保護回路
や二次電池の残容量を表示するための残量演算回路等を
二次電池と共に一体に構成したものである。二次電池と
して、充電により繰り返し使用できる経済性だけでな
く、体積エネルギー密度や重量エネルギー密度が高いリ
チウムイオン二次電池を用いることにより、携帯電子機
器の小型軽量化の向上を図ることができる。2. Description of the Related Art A battery pack using a secondary battery is used as a power source for a mobile phone, a notebook personal computer (hereinafter referred to as a notebook computer), and the like. The battery pack is
The battery protection circuit for protecting the secondary battery from overcharge, overdischarge, etc., the remaining amount calculation circuit for displaying the remaining capacity of the secondary battery, and the like are integrally configured with the secondary battery. As a secondary battery, by using a lithium ion secondary battery having high volume energy density and high weight energy density as well as economical efficiency that can be repeatedly used by charging, it is possible to reduce the size and weight of a portable electronic device.
【０００３】しかし、二次電池は消耗品であり、充放電
により繰り返し使用できる回数は有限であり、サイクル
寿命特性を有している。サイクル寿命は充電条件や放電
条件に支配されるだけでなく保存状態による影響も受
け、単に充放電の繰り返し回数だけで表せるものではな
い。即ち、サイクル寿命は正常な保存状態や充放電状態
での指標であって、保存状態や充放電状態が正常になさ
れなかった場合には劣化が過度に進行する。例えば、満
充電状態の二次電池を高温環境下で保存した場合や、過
充電や過放電になった場合などには二次電池はサイクル
寿命より少ない期間で劣化状態となる。However, the secondary battery is a consumable item, has a limited number of times that it can be repeatedly used by charging and discharging, and has cycle life characteristics. The cycle life is not only governed by the charging and discharging conditions, but is also affected by the storage state, and cannot be expressed simply by the number of times charging and discharging are repeated. That is, the cycle life is an index in a normal storage state or a charging / discharging state, and if the storage state or the charging / discharging state is not normal, deterioration proceeds excessively. For example, when a fully charged secondary battery is stored in a high temperature environment or overcharged or overdischarged, the secondary battery deteriorates in a period shorter than the cycle life.
【０００４】電池パックが市場から不良返却されたと
き、電池パックを構成する二次電池が劣化していた場合
に、どのような原因で劣化したのかの判断は推定になら
ざるをえない。もし、電池パックにその使用履歴がわか
る手段が設けられていたとすると、二次電池が劣化に至
った原因を解析することが可能となる。また、使用履歴
がわかり、原因の解析ができると、二次電池及び電池パ
ックの設計にフィードバックできる情報が蓄積できる。
また、ユーザの使用方法に問題がなかったのかを知る手
掛かりとすることができる。When the battery pack is returned from the market as defective, if the secondary battery constituting the battery pack is deteriorated, it is inevitable to judge what causes the deterioration. If the battery pack is provided with a means for understanding the usage history, it is possible to analyze the cause of deterioration of the secondary battery. Further, if the usage history is known and the cause can be analyzed, information that can be fed back to the design of the secondary battery and the battery pack can be accumulated.
Further, it can be used as a clue to know whether or not there is any problem in the usage method of the user.
【０００５】二次電池の使用履歴を記録して電池寿命を
判定する従来技術として、特開平７−２０１３７０号公
報に開示された電池履歴メモリー装置が知られている。
この従来技術は、充電電流、充電時間、充電開始時電
圧、充電終了時電圧及び充電回数からなる充電データを
記録する充電データ記録部、二次電池の基礎パラメータ
を記録する基礎パラメータ記録部及び電池寿命を判定す
る判定部を有し、前記充電データを記録し、前記基礎パ
ラメータを記録して、充電データ及び基礎パラメータか
ら判定部は電池寿命を判定すると記載されているが、こ
れ以上の具体的な開示はない。A battery history memory device disclosed in Japanese Patent Laid-Open No. 7-201370 is known as a conventional technique for recording the usage history of a secondary battery and determining the battery life.
This conventional technology includes a charging data recording unit that records charging data including charging current, charging time, charging start voltage, charging end voltage, and number of times of charging, a basic parameter recording unit that records basic parameters of a secondary battery, and a battery. It has a determination unit for determining the life, records the charging data, records the basic parameters, and the determination unit is described to determine the battery life from the charging data and the basic parameters, but more specific There is no disclosure.
【０００６】[0006]
【発明が解決しようとする課題】上記従来技術では充電
データと二次電池の基礎パラメータから二次電池の寿命
を判定しようとしているが、前述したように保存劣化や
放電状態による劣化のデータがないので、劣化している
判断は可能としても、正確な寿命判定は困難である。ま
た、保存状態を含む使用履歴を記録して二次電池の劣化
原因を解析することはできない。In the above-mentioned prior art, the life of the secondary battery is determined from the charge data and the basic parameters of the secondary battery, but as described above, there is no data on deterioration due to storage or discharge. Therefore, it is difficult to accurately determine the life even if the deterioration can be determined. In addition, it is not possible to record the usage history including the storage state and analyze the cause of deterioration of the secondary battery.
【０００７】本発明が目的とするところは、保存状態及
び充放電状態に於けるデータを記録する手段を設けて二
次電池の劣化原因を解析することを可能にする電池パッ
クを提供することにある。An object of the present invention is to provide a battery pack which is capable of analyzing the cause of deterioration of a secondary battery by providing a means for recording data in a storage state and a charging / discharging state. is there.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
の本願の第１発明は、二次電池と、この二次電池の電池
温度及び電池電圧、充放電電流を検出する検出手段と、
二次電池の残容量を演算する残容量演算手段と、二次電
池の過充電及び過放電の状態を検出する電池保護手段と
を備えた電池パックにおいて、前記検出手段及び残容量
演算手段、電池保護手段によって求められたデータから
二次電池の保存劣化に関与するデータを保存履歴として
記録する保存履歴記録手段と、前記検出手段及び残容量
演算手段、電池保護手段によって求められたデータから
二次電池の充放電劣化に関与するデータを充放電履歴と
して記録する充放電履歴記録手段とを具備してなること
を特徴とするものである。The first invention of the present application for achieving the above object comprises a secondary battery, and a detection means for detecting the battery temperature, the battery voltage and the charging / discharging current of the secondary battery,
In a battery pack comprising a remaining capacity calculation means for calculating the remaining capacity of the secondary battery and a battery protection means for detecting a state of overcharge and overdischarge of the secondary battery, the detection means, the remaining capacity calculation means, and the battery A storage history recording means for recording data relating to storage deterioration of the secondary battery as a storage history from the data obtained by the protection means, the detection means and the remaining capacity calculation means, and the secondary data from the data obtained by the battery protection means. A charging / discharging history recording means for recording data relating to charging / discharging deterioration of the battery as a charging / discharging history.
【０００９】上記構成によれば、電池パックに二次電池
の保存劣化に関与するデータ及び充放電劣化に関与する
データが記録されているので、電池パックに耐用期間内
の不良が生じたとき、不良原因を解析することができ、
電池パックの開発、改良のためにフィードバックするこ
とができる。According to the above construction, since data relating to storage deterioration of the secondary battery and data relating to charging / discharging deterioration are recorded in the battery pack, when a defect within the service life occurs in the battery pack, You can analyze the cause of the defect,
Feedback can be provided for the development and improvement of the battery pack.
【００１０】また、本願の第２発明に係る電池パック
は、二次電池と、この二次電池の電池温度及び電池電
圧、充放電電流を検出する検出手段と、二次電池の残容
量を演算する残容量演算手段と、二次電池の過充電及び
過放電の状態を検出する電池保護手段と、二次電池の保
存状態における前記電池温度及び前記残容量とを記録す
る保存履歴記録手段と、二次電池に充電された総充電容
量及び充電開始時の残容量、満充電後の電池電圧、前記
過充電の検出回数を記録する充電履歴記録手段と、二次
電池から放電された総放電容量及び前記過放電の検出回
数、残容量演算の補正回数、容量学習回数を記録する放
電履歴記録手段と、を具備してなることを特徴とする。Further, the battery pack according to the second invention of the present application, the secondary battery, the detection means for detecting the battery temperature, the battery voltage, and the charging / discharging current of the secondary battery, and the remaining capacity of the secondary battery are calculated. A remaining capacity calculation means, a battery protection means for detecting the state of overcharge and overdischarge of the secondary battery, a storage history recording means for recording the battery temperature and the remaining capacity in the storage state of the secondary battery, Total charge capacity charged to the secondary battery, remaining capacity at the start of charging, battery voltage after full charge, charge history recording means for recording the number of times of overcharge detection, and total discharge capacity discharged from the secondary battery And a discharge history recording means for recording the number of detections of the over-discharge, the number of corrections of the remaining capacity calculation, and the number of capacity learnings.
【００１１】上記電池パックでは、保存履歴記録手段に
より二次電池の保存劣化を判定するデータが記録され、
充電履歴記録手段により二次電池の充電劣化を判定する
データが記録され、放電履歴記録手段により放電劣化を
判定するデータが記録されるので、各履歴記録手段から
記録されたデータを取り出すことにより、二次電池が耐
用期間以前に劣化を来した場合に、劣化要因を解析する
ことができ、電池パックや二次電池の設計に解析結果を
生かすことができる。In the battery pack, the storage history recording means records data for determining storage deterioration of the secondary battery,
Data for determining charge deterioration of the secondary battery is recorded by the charge history recording means, and data for determining discharge deterioration is recorded by the discharge history recording means, so by extracting the recorded data from each history recording means, When the secondary battery deteriorates before the service life, the deterioration factor can be analyzed, and the analysis result can be utilized in the design of the battery pack or the secondary battery.
【００１２】上記構成において、電池電圧は、複数の二
次電池を直列接続した場合には、複数の二次電池毎の電
圧により充電及び放電が制御されるので、複数の二次電
池個々の電圧の検出に基づくデータが記録される。In the above structure, when a plurality of secondary batteries are connected in series, charging and discharging are controlled by the voltage of each of the plurality of secondary batteries. Therefore, the voltage of each of the plurality of secondary batteries is controlled. The data based on the detection of is recorded.
【００１３】また、保存履歴記録手段は、電池温度及び
残容量を複数のレベルに区分したマトリクスの該当領域
での存在を所定時間間隔でカウントする手法により、長
い期間の履歴データの記録がメモリ容量を徒に増加させ
ることなく可能である。同様に、充電開始時の残容量及
び満充電後の電池電圧についても、複数のレベルに区分
した該当レベルをカウントすることで、長い期間の履歴
データの記録が可能になる。The storage history recording means counts the existence of the battery temperature and the remaining capacity in the corresponding area of the matrix divided into a plurality of levels at a predetermined time interval so that the history data of a long period is recorded in the memory capacity. It is possible without increasing the number. Similarly, with respect to the remaining capacity at the start of charging and the battery voltage after full charging, it is possible to record history data for a long period by counting the corresponding levels divided into a plurality of levels.
【００１４】[0014]
【発明の実施の形態】以下、添付図面を参照して本発明
の実施形態について説明し、本発明の理解に供する。
尚、以下に示す実施形態は本発明を具体化した一例であ
って、本発明の技術的範囲を限定するものではない。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention.
The embodiments described below are examples of embodying the present invention and do not limit the technical scope of the present invention.
【００１５】図１は、実施形態に係る電池パックの構成
を示すもので、ノートパソコンの電池電源として構成さ
れた例を示すもので、リチウムイオン二次電池を用いて
構成されたものである。本実施形態に係る電池パックの
特徴は、使用履歴を記録する機能を備えて、不良返却さ
れた電池パックの二次電池の劣化や故障原因を解析でき
るようにしたところにある。FIG. 1 shows the configuration of the battery pack according to the embodiment, showing an example configured as a battery power source for a notebook computer, which is configured using a lithium ion secondary battery. A feature of the battery pack according to the present embodiment is that it has a function of recording a usage history and can analyze the cause of deterioration or failure of the secondary battery of the battery pack returned as defective.
【００１６】図１において、４本の二次電池１ａ、１
ｂ、１ｃ、１ｄは直列に接続され、個々の電圧は電圧検
出手段３によって検出され、検出値はマイコン２に入力
される。また、二次電池１ａ〜１ｄの入出力回路と直列
に電流検出抵抗７が配設され、その両端電圧から充電電
流及び放電電流が電流検出手段４によって検出され、検
出値はマイコン２に入力される。また、温度検出手段５
によって二次電池１ａ〜１ｄの温度が検出され、検出値
はマイコンに入力される。マイコン２は、入力された電
圧から二次電池１ａ〜１ｄ個々の過充電保護電圧又は過
放電保護電圧を検出して充電又は放電を停止させる電池
保護手段の機能と、入力された電流から二次電池１ａ〜
１ｄの残容量を演算する残容量演算手段の機能を備えて
いる。又、マイコン２は電池パックが保存されている間
の二次電池１ａ〜１ｄの劣化に関与するデータ及び充放
電が実施されている間の二次電池１ａ〜１ｄの劣化に関
与するデータを生成すると共に、それらを保存履歴及び
充放電履歴としてメモリ６（保存履歴記録手段及び充放
電履歴記録手段）に記録する。In FIG. 1, four secondary batteries 1a, 1
b, 1c and 1d are connected in series, each voltage is detected by the voltage detecting means 3, and the detected value is input to the microcomputer 2. Further, a current detection resistor 7 is arranged in series with the input / output circuit of the secondary batteries 1a to 1d, the charging current and the discharging current are detected by the current detection means 4 from the voltage across the current detection resistor 7, and the detected value is input to the microcomputer 2. It Also, the temperature detecting means 5
The temperature of the secondary batteries 1a to 1d is detected by and the detected value is input to the microcomputer. The microcomputer 2 detects the overcharge protection voltage or the overdischarge protection voltage of each of the secondary batteries 1a to 1d from the input voltage and stops the charging or discharging, and the function of the battery protection means. Battery 1a ~
It has a function of remaining capacity calculation means for calculating the remaining capacity of 1d. Further, the microcomputer 2 generates data relating to the deterioration of the secondary batteries 1a to 1d while the battery pack is stored and data relating to the deterioration of the secondary batteries 1a to 1d during the charging and discharging. At the same time, they are recorded as a storage history and a charge / discharge history in the memory 6 (storage history recording means and charge / discharge history recording means).
【００１７】二次電池１ａ〜１ｄの劣化は充放電だけで
なく、保存状態によっても劣化が進行する。この保存状
態における劣化を支配する要素は、二次電池１ａ〜１ｄ
の温度と残容量である。例えば、満充電状態の二次電池
１ａ〜１ｄを高温状態で保存すると、著しい劣化をきた
すが、温度と残容量との状態に存在した時間を記録して
おくと、二次電池１ａ〜１ｄが保存劣化をまねく状態に
おかれていたか否かを判断することができる。保存劣化
の記録は、表１に示すように、二次電池１ａ〜１ｄの温
度と残容量の状態を、温度を５レベル、残容量を６レベ
ルとしたマトリクスに区分し、それぞれの領域が示す温
度及び残容量の状態にどれだけの時間存在したかを記録
する。具体的には、１時間毎の時点での温度と残容量に
該当する領域の度数をカウントアップし、表１に示す例
のようにカウント値を記録する。１項目１６ｂｉｔで表
現した場合に、最大で７．５年の記録が可能である。Deterioration of the secondary batteries 1a to 1d progresses not only in charging and discharging but also in storage condition. The factors that govern the deterioration in this storage state are the secondary batteries 1a to 1d.
Temperature and remaining capacity. For example, if the fully charged rechargeable batteries 1a to 1d are stored in a high temperature state, remarkable deterioration occurs. However, if the time spent in the state of temperature and remaining capacity is recorded, the rechargeable batteries 1a to 1d are It is possible to determine whether or not the storage deterioration has occurred. As shown in Table 1, the storage deterioration record divides the temperature and the remaining capacity of the secondary batteries 1a to 1d into a matrix having a temperature of 5 levels and a remaining capacity of 6 levels, and each area shows it. Record how long it has been in temperature and capacity. Specifically, the frequency of the region corresponding to the temperature and the remaining capacity at every hour is counted up, and the count value is recorded as in the example shown in Table 1. When each item is expressed by 16 bits, it is possible to record a maximum of 7.5 years.
【００１８】[0018]
【表１】
充放電履歴記録手段は、二次電池１ａ〜１ｄの劣化に関
与する充電のパターンとして、総充電容量及び充電開始
時の残容量、満充電後の電池電圧、過充電保護電圧の検
出回数についてメモリ６に記録する充電履歴記録手段
と、放電のパターンとして総放電容量及び過放電保護電
圧の検出回数、残容量演算の補正検出回数、残容量演算
の学習回数についてメモリ６に記録する放電履歴記録手
段として構成することができる。[Table 1] The charge / discharge history recording means stores a memory for the total number of charges, the remaining capacity at the start of charging, the battery voltage after full charge, and the number of detections of the overcharge protection voltage, as a charging pattern related to the deterioration of the secondary batteries 1a to 1d. 6, a charge history recording means for recording in the memory 6, and a discharge history recording means for recording in the memory 6 the number of detections of the total discharge capacity and overdischarge protection voltage as the discharge pattern, the number of correction detections of the remaining capacity calculation, and the number of learnings of the remaining capacity calculation Can be configured as.
【００１９】前記総充電容量は電流検出手段４により検
出された充電電流の積分として求められる充電容量を積
算することによって得られ、同様に前記総放電容量は電
流検出手段４により検出された放電電流の積分として求
められる放電容量を積算することによって得られる。The total charge capacity is obtained by integrating the charge capacity obtained as the integral of the charge current detected by the current detection means 4, and similarly the total discharge capacity is the discharge current detected by the current detection means 4. It is obtained by integrating the discharge capacity obtained as the integral of.
【００２０】また、前記充電開始時の残容量は、表２に
示すように、残容量を８領域に区分して、どの残容量の
状態から充電が開始されたか、該当する残容量の領域の
度数をカウントアップし、表２に示す例のようにカウン
ト数を記録する。Further, as shown in Table 2, the remaining capacity at the start of charging is divided into eight areas, and the state of the remaining capacity at which the charging is started and the remaining capacity of the corresponding remaining area are shown. Count up and record the count as in the example shown in Table 2.
【００２１】[0021]
【表２】
また、前記満充電時の電池電圧は、充電器の設定電圧に
依存するが、この電圧変化が二次電池１ａ〜１ｄの劣化
に大きな影響を与える。従って、この満充電後の電圧履
歴を記録する。具体的には、マイコン２により満充電が
検出された後、所定電流以上の放電がなく、所定時間が
経過した後の各二次電池１ａ〜１ｄ毎の電池電圧を表３
に示すように記録する。ここでは、満充電後の放電電流
が１５０ｍＡ以下の状態で１０分経過後の電池電圧を各
二次電池１ａ〜１ｄ毎に、表３に示す例のようにカウン
ト数を記録する。[Table 2] Further, the battery voltage at the time of full charge depends on the set voltage of the charger, but this voltage change greatly affects the deterioration of the secondary batteries 1a to 1d. Therefore, the voltage history after this full charge is recorded. Specifically, after the full charge is detected by the microcomputer 2, the battery voltage of each of the secondary batteries 1a to 1d after the elapse of a predetermined time without the discharge of a predetermined current or more is shown in Table 3.
Record as shown in. Here, the count number is recorded for each of the secondary batteries 1a to 1d after a lapse of 10 minutes in a state where the discharge current after full charge is 150 mA or less, as in the example shown in Table 3.
【００２２】[0022]
【表３】
また、二次電池１ａ〜１ｄの劣化に関与する過充電や過
放電、残容量の学習やその補正について、それぞれの検
出回数をカウントする。過充電や過放電は言うまでもな
く二次電池１ａ〜１ｄの劣化に大きく影響するので、充
電器の故障などの障害によってマイコン２によって過充
電及び過放電が検出されたときには、その検出回数が記
録される。また、放電電流の積分値から求められる残容
量は、電池温度や放電電流量など使用方法や環境によっ
て補正がなされ、残容量演算の基となる基礎容量の学習
値が変更される。従って、残容量演算のための学習回数
や補正量毎の検出回数をカウントし記録しておくことに
よって、電池パックの使用状態、使用環境を知ることが
でき、劣化原因を解析する重要な手掛かりとなる。[Table 3] In addition, the number of times of detection is counted for each of overcharge and overdischarge related to the deterioration of the secondary batteries 1a to 1d, learning of the remaining capacity, and correction thereof. Needless to say, overcharge and overdischarge greatly affect the deterioration of the secondary batteries 1a to 1d. Therefore, when the microcomputer 2 detects overcharge and overdischarge due to a failure such as a charger failure, the number of detections is recorded. It Further, the remaining capacity obtained from the integrated value of the discharge current is corrected according to the usage method and environment such as the battery temperature and the amount of discharge current, and the learned value of the basic capacity which is the basis of the remaining capacity calculation is changed. Therefore, by counting and recording the number of times of learning for the remaining capacity calculation and the number of times of detection for each correction amount, it is possible to know the usage state and usage environment of the battery pack, which is an important clue to analyze the cause of deterioration. Become.
【００２３】[0023]
【発明の効果】以上の説明の通り本発明によれば、電池
パックに保存状態及び充放電状態における劣化に関与す
るデータが記録されているので、不良返品された電池パ
ックの解析において、記録されたデータから電池パック
がどのような使用状態にあったかがわかり、二次電池及
び電池パックの開発、設計にフィードバックすることが
できると同時に、ユーザの使用方法が適切であったか否
かを知る手掛かりとすることができる。As described above, according to the present invention, since the data relating to the deterioration in the storage state and the charging / discharging state is recorded in the battery pack, it is recorded in the analysis of the defectively returned battery pack. It is possible to know the usage condition of the battery pack from the data obtained and to feed it back to the development and design of the secondary battery and battery pack, and at the same time be a clue to know whether the usage method by the user was appropriate or not. be able to.
【図１】実施形態に係る電池パックの構成を示すブロッ
ク図。FIG. 1 is a block diagram showing a configuration of a battery pack according to an embodiment.
１ａ、１ｂ、１ｃ、１ｄ 二次電池 ２ マイコン（残容量演算手段／電池保護手段） ３ 電圧検出手段 ４ 電流検出手段 ５ 温度検出手段 ６ メモリ（保存履歴記録手段／充放電履歴記録手段） 1a, 1b, 1c, 1d secondary battery 2 Microcomputer (remaining capacity calculation means / battery protection means) 3 Voltage detection means 4 Current detection means 5 Temperature detection means 6 memory (storing history recording means / charging / discharging history recording means)
Claims (6)
び電池電圧、充放電電流を検出する検出手段と、二次電
池の残容量を演算する残容量演算手段と、二次電池の過
充電及び過放電の状態を検出する電池保護手段とを備え
た電池パックにおいて、 前記検出手段及び残容量演算手段、電池保護手段によっ
て求められたデータから二次電池の保存劣化に関与する
データを保存履歴として記録する保存履歴記録手段と、
前記検出手段及び残容量演算手段、電池保護手段によっ
て求められたデータから二次電池の充放電劣化に関与す
るデータを充放電履歴として記録する充放電履歴記録手
段とを具備してなることを特徴とする電池パック。1. A secondary battery, a detection unit for detecting a battery temperature, a battery voltage, and a charging / discharging current of the secondary battery, a remaining capacity calculating unit for calculating a remaining capacity of the secondary battery, and a secondary battery In a battery pack provided with a battery protection means for detecting an overcharged state and an overdischarged state, data relating to storage deterioration of a secondary battery is obtained from the data obtained by the detection means, the remaining capacity calculation means, and the battery protection means. Save history recording means for recording as a save history,
A charging / discharging history recording means for recording data relating to charging / discharging deterioration of the secondary battery as charging / discharging history from the data obtained by the detecting means, the remaining capacity calculating means, and the battery protecting means. And battery pack.
び電池電圧、充放電電流を検出する検出手段と、二次電
池の残容量を演算する残容量演算手段と、二次電池の過
充電及び過放電の状態を検出する電池保護手段と、 二次電池の保存状態における前記電池温度と前記残容量
とを記録する保存履歴記録手段と、 二次電池に充電された総充電容量及び充電開始時の残容
量、満充電後の電池電圧、前記過充電の検出回数を記録
する充電履歴記録手段と、 二次電池から放電された総放電容量及び前記過放電の検
出回数、残容量演算の補正回数、容量学習回数を記録す
る放電履歴記録手段と、を具備してなることを特徴とす
る電池パック。2. A secondary battery, a detection means for detecting a battery temperature, a battery voltage, and a charging / discharging current of the secondary battery, a remaining capacity calculation means for calculating a remaining capacity of the secondary battery, and a secondary battery Battery protection means for detecting the state of overcharge and overdischarge, storage history recording means for recording the battery temperature and the remaining capacity in the storage state of the secondary battery, the total charge capacity charged in the secondary battery, and Charging history recording means for recording the remaining capacity at the start of charging, the battery voltage after full charging, the number of times of overcharge detection, the total discharge capacity discharged from the secondary battery and the number of overdischarge detection, remaining capacity calculation And a discharge history recording unit that records the number of corrections and the number of times capacity learning is performed.
電池毎の電圧として検出する請求項１または２に記載の
電池パック。3. The battery pack according to claim 1, wherein the battery voltage is detected as a voltage for each of a plurality of secondary batteries connected in series.
量を複数のレベルに区分したマトリクスの該当領域での
存在を所定時間間隔でカウントする請求項１または２に
記載の電池パック。4. The battery pack according to claim 1, wherein the storage history recording means counts the presence in a corresponding area of a matrix in which the battery temperature and the remaining capacity are divided into a plurality of levels at predetermined time intervals.
レベルに区分した該当レベルをカウントする請求項２に
記載の電池パック。5. The battery pack according to claim 2, wherein the remaining capacity at the start of charging is counted by dividing the remaining capacity into a plurality of levels.
時間経過後の電池電圧を複数のレベルに区分した該当レ
ベルをカウントする請求項２に記載の電池パック。6. The battery pack according to claim 2, wherein the battery voltage after full charge counts a corresponding level obtained by dividing the battery voltage after a lapse of a predetermined time after completion of charging into a plurality of levels.
Priority Applications (1)
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|---|---|---|---|
| JP2001202944A JP4794760B2 (en) | 2001-07-04 | 2001-07-04 | Battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001202944A JP4794760B2 (en) | 2001-07-04 | 2001-07-04 | Battery pack |
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| Publication Number | Publication Date |
|---|---|
| JP2003017138A true JP2003017138A (en) | 2003-01-17 |
| JP4794760B2 JP4794760B2 (en) | 2011-10-19 |
Family
ID=19039656
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|---|---|---|---|
| JP2001202944A Expired - Fee Related JP4794760B2 (en) | 2001-07-04 | 2001-07-04 | Battery pack |
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| Country | Link |
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