JP2001086654A - Method and circuit for activating lithium battery - Google Patents
Method and circuit for activating lithium batteryInfo
- Publication number
- JP2001086654A JP2001086654A JP25697899A JP25697899A JP2001086654A JP 2001086654 A JP2001086654 A JP 2001086654A JP 25697899 A JP25697899 A JP 25697899A JP 25697899 A JP25697899 A JP 25697899A JP 2001086654 A JP2001086654 A JP 2001086654A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- lithium battery
- time
- recovery rate
- 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.)
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Classifications
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- 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)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、コンピュータ等
のバックアップ電源として用いられるリチウム電池の活
性化に関するものである。The present invention relates to activation of a lithium battery used as a backup power supply for a computer or the like.
【０００２】[0002]
【従来の技術】図５は、例えば特開平３ー２０３５２３
号公報に示された従来のリチウム電池の活性化の回路構
成を示す図である。図において、１は活性化対象のリチ
ウム電池、２はリチウム電池１を放電させる放電回路、
３は放電のパルスを発生させるパルス発生回路、４は放
電回数を計数するカウンタ、５はリチウム電池１の定格
電圧より低い所定の基準電圧と、放電時に測定したリチ
ウム電池の電圧とを比較する比較回路、６は放電時にリ
チウム電池電圧を測定する電圧検出回路である。７はカ
ウンタ４で計数されたカウント数が所定の値に達したと
き、電池寿命とみなして活性化不可能であることを表示
する表示器である。８はコンピュータ、９は逆流阻止用
のダイオードである。2. Description of the Related Art FIG.
FIG. 1 is a diagram showing a circuit configuration for activating a conventional lithium battery disclosed in Japanese Patent Application Laid-Open Publication No. HEI 10-303, 1988. In the figure, 1 is a lithium battery to be activated, 2 is a discharge circuit for discharging the lithium battery 1,
3 is a pulse generating circuit for generating a discharge pulse, 4 is a counter for counting the number of discharges, 5 is a comparison for comparing a predetermined reference voltage lower than the rated voltage of the lithium battery 1 with the voltage of the lithium battery measured at the time of discharging. A circuit 6 is a voltage detection circuit for measuring a lithium battery voltage during discharging. Reference numeral 7 denotes a display for indicating that the battery cannot be activated when the count number counted by the counter 4 reaches a predetermined value, assuming that the battery has expired. 8 is a computer, and 9 is a diode for blocking backflow.
【０００３】リチウム電池は時間の経過とともに、その
電極表面に塩化リチュウム皮膜が形成され内部抵抗が増
加する。リチウム電池の活性化は放電電流により塩化リ
チュウム皮膜を除去して内部抵抗を減少させるために行
われる。次に従来のリチウム電池の活性化について説明
する。一定周期で所定のパルス幅をパルス発生回路３で
発生させ、前記のパルス信号に応じて放電回路２に電流
を通じてリチウム電池１を放電させる。この放電中にリ
チウム電池１の電圧を電圧検出回路６にて測定する。比
較回路５でリチウム電池１の定格電圧より低い所定の基
準電圧と測定された電圧とを比較して、測定電圧が基準
電圧より低い時にカウンタ４の計数値に１を加算する。
そして、パルス発生回路３からのパルス発生周期を以前
の周期より短くする。これにより電池活性化が促進され
る。電池活性化の促進により放電中のリチウム電池１の
電圧が所定の基準電圧より高くなると電池活性化ができ
たとしてカウンタ４をリセットする。一方、放電中のリ
チウム電池１の電圧が所定の基準電圧より低い状態が続
くときはカウンタ４への計数が続行される。カウンタ４
の計数値が第一の所定の数値に達すると、リチウム電池
１の容量が低下し寿命に達したとして活性化不可能であ
ることを表示器７で表示する。In a lithium battery, a lithium chloride film is formed on the surface of the electrode with the passage of time, and the internal resistance increases. The activation of the lithium battery is performed in order to remove the lithium chloride film by the discharge current and reduce the internal resistance. Next, activation of a conventional lithium battery will be described. The pulse generating circuit 3 generates a predetermined pulse width at a constant cycle, and discharges the lithium battery 1 through the discharging circuit 2 in response to the pulse signal. During this discharge, the voltage of the lithium battery 1 is measured by the voltage detection circuit 6. The comparison circuit 5 compares a predetermined reference voltage lower than the rated voltage of the lithium battery 1 with the measured voltage, and adds 1 to the count value of the counter 4 when the measured voltage is lower than the reference voltage.
Then, the pulse generation cycle from the pulse generation circuit 3 is made shorter than the previous cycle. Thereby, battery activation is promoted. When the voltage of the lithium battery 1 being discharged becomes higher than a predetermined reference voltage due to the promotion of the battery activation, the counter 4 is reset assuming that the battery has been activated. On the other hand, when the voltage of the lithium battery 1 being discharged continues to be lower than the predetermined reference voltage, the counting to the counter 4 is continued. Counter 4
When the count value reaches the first predetermined value, the display 7 indicates that the capacity of the lithium battery 1 has decreased and the lithium battery 1 has reached the end of its life and cannot be activated.
【０００４】[0004]
【発明が解決しようとする課題】従来のリチウム電池の
活性化方法は、一定のパルス幅で放電させるため、リチ
ウム電池容量に対し必要以上の電流を放電させることに
なる。よって、リチウム電池の寿命を短くさせてしま
う。また、リチウム電池の寿命は放電回数により定める
ために実際の電池容量と異なることが有り、余力を残し
て電池交換のムダ、寿命を越えて容量不足から本来の目
的であるバックアップが不可能になるといった課題があ
った。In the conventional method for activating a lithium battery, the battery is discharged with a constant pulse width, so that an excessive current is discharged to the capacity of the lithium battery. Therefore, the life of the lithium battery is shortened. In addition, the life of a lithium battery may be different from the actual battery capacity because it is determined by the number of times of discharge, and the original purpose backup is impossible due to waste of battery replacement with excess capacity and insufficient capacity beyond the life. There was such a problem.
【０００５】[0005]
【課題を解決するための手段】この発明に係るリチウム
電池の活性化方法は、一定の周期でリチウム電池から活
性化電流を放電させ放電通電中のリチウム電池の過渡最
低電圧Ｖａを検出するステップと、過渡最低電圧Ｖａか
らの回復上昇電圧の時間正接である電圧回復率αを求め
るステップと、電圧回復率αと通電時間の関係から電圧
回復率αに対応した通電時間を選定して活性化電流の放
電時間を設定するステップとを備えたものである。According to the present invention, there is provided a method for activating a lithium battery, comprising the steps of: discharging an activation current from a lithium battery at a predetermined period; and detecting a transient minimum voltage Va of the lithium battery during discharge. Determining a voltage recovery rate α that is a time tangent of a recovery rising voltage from the transient minimum voltage Va, and selecting an energization time corresponding to the voltage recovery rate α from the relationship between the voltage recovery rate α and the energization time to activate the activation current. Setting the discharge time of
【０００６】そして、リチウム電池の定格電圧より低い
所定の基準電圧と過渡最低電圧Ｖａとを比較するステッ
プ、比較ステップで検出された過渡最低電圧Ｖａが基準
電圧より大きいとき活性化電流の放電時間を電圧回復率
αと通電時間の関係の最少一定時間としたものである。And a step of comparing a predetermined reference voltage lower than the rated voltage of the lithium battery with the lowest transient voltage Va. When the lowest transient voltage Va detected in the comparing step is higher than the reference voltage, the discharge time of the activation current is reduced. This is the minimum constant time in the relationship between the voltage recovery rate α and the energization time.
【０００７】また、電圧回復率αが所定値以下のときは
リチウム電池の寿命を通知出力をさせるものである。When the voltage recovery rate α is equal to or less than a predetermined value, a notice of the life of the lithium battery is output.
【０００８】この発明に係るリチウム電池の活性化回路
は、一定の周期でリチウム電池から活性化電流を放電さ
せ放電通電中のリチウム電池の電圧を測定し過渡最低電
圧Ｖａを検出する電圧検出回路と、過渡最低電圧Ｖａか
らの上昇電圧の時間正接である電圧回復率αを求め、予
め設定されている電圧回復率αと通電時間の関係から電
圧回復率αに対応した通電時間を選定して活性化電流の
放電時間を設定する電圧判定回路とを備えてたものであ
る。An activation circuit for a lithium battery according to the present invention includes a voltage detection circuit for discharging an activation current from the lithium battery at a predetermined cycle, measuring the voltage of the lithium battery during discharge and detecting a transient minimum voltage Va. The voltage recovery rate α, which is the time tangent of the rising voltage from the transient minimum voltage Va, is determined, and the energization time corresponding to the voltage recovery rate α is selected from the relationship between the preset voltage recovery rate α and the energization time to activate. And a voltage determination circuit for setting a discharge time of the activation current.
【０００９】そして、電圧回復率αが所定値以下のとき
はリチウム電池が寿命に至ったとして、接続されるコン
ピュータのデータを不揮発性メモリに書き込む保護手段
を備えたものである。When the voltage recovery rate α is equal to or less than a predetermined value, it is determined that the lithium battery has reached the end of its life, and protection means for writing data of a connected computer to a nonvolatile memory is provided.
【００１０】[0010]
【発明の実施の形態】実施の形態１．図１はこの発明の
実施の形態１のリチウム電池の活性化回路の構成図、図
２は実施の形態１のリチウム電池の活性化方法を示すフ
ローチャート、図３この発明におけるリチウム電池から
電流を放電させたときの電圧波形を示す図、図４は電圧
回復率と放電時間設定の関係を示すグラフである。図に
おいて、１〜３、７〜９は上記従来例の説明と同様のも
のである。１０はコンピュータ９のデータ保存用不揮発
性メモリ、６０は活性化放電時にリチウム電池１の電圧
を測定する電圧検出回路である。５０は電圧判定回路で
あり、電圧検出回路６０の測定電圧の変化をとらえて活
性化放電時間、リチウム電池１の寿命を判定する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a configuration diagram of a lithium battery activation circuit according to a first embodiment of the present invention, FIG. 2 is a flowchart showing a method of activating the lithium battery according to the first embodiment, and FIG. FIG. 4 is a graph showing a voltage waveform when the voltage is applied, and FIG. 4 is a graph showing a relationship between a voltage recovery rate and a discharge time setting. In the figure, reference numerals 1 to 3 and 7 to 9 are the same as those in the description of the conventional example. Reference numeral 10 denotes a non-volatile memory for storing data in the computer 9, and reference numeral 60 denotes a voltage detection circuit that measures the voltage of the lithium battery 1 during activation discharge. Reference numeral 50 denotes a voltage determination circuit which determines the activation discharge time and the life of the lithium battery 1 by detecting a change in the voltage measured by the voltage detection circuit 60.
【００１１】図３において、Ｔｃはリチウム電池１の活
性化のための放電時間、Ｔoは予め設定している微小所
定時間であり両者はＴｃ＞Ｔoの関係にしている。Ｅは
リチウム電池１の定格電圧、Ｖａは過渡最低電圧、Ｖｂ
は電圧判定ように予め定格電圧Ｅより低い電圧に設定さ
れた基準電圧である。Ｖｏは過渡最低電圧Ｖａから微小
所定時間Ｔo内に回復した上昇電圧であり、両者の時間
正接を電圧回復率α（α＝Ｖｏ／Ｔｏ）とする。In FIG. 3, Tc is a discharge time for activating the lithium battery 1, To is a minute predetermined time set in advance, and both have a relationship of Tc> To. E is the rated voltage of the lithium battery 1, Va is the minimum transient voltage, Vb
Is a reference voltage previously set to a voltage lower than the rated voltage E so as to determine the voltage. Vo is a rising voltage recovered from the transient minimum voltage Va within a minute predetermined time To, and a tangent of both is a voltage recovery rate α (α = Vo / To).
【００１２】図４における電圧回復率αと放電時間Ｔｃ
との関係は、実験から数点のポイントで求め延長類推し
て全体を設定している。この電圧回復率αと放電時間Ｔ
ｃとの関係テーブルは電圧判定回路５０内の図示してい
ないメモリ回路に収納されている。電圧回復率αと放電
時間Ｔｃの関係は、電圧回復率αが高いと放電時間Ｔｃ
は短く、電圧回復率αが小さくなると放電時間Ｔｃは長
くなる。これは電圧回復率αが大きいときは、リチウム
電池１の給電能力が高いので電極表面の塩化リチュウム
皮膜を短時間で除去できる。また、電圧回復率αが小さ
いときは、リチウム電池１の給電能力が少ないので塩化
リチュウム皮膜を除去するのに長時間の通電を必要とす
るためである。Voltage recovery rate α and discharge time Tc in FIG.
The relationship with is determined at several points from the experiment and extended by analogy to set the whole. The voltage recovery rate α and the discharge time T
The relation table with c is stored in a memory circuit (not shown) in the voltage determination circuit 50. The relationship between the voltage recovery rate α and the discharge time Tc is as follows.
Is shorter, and as the voltage recovery rate α becomes smaller, the discharge time Tc becomes longer. This is because when the voltage recovery rate α is large, the power supply capability of the lithium battery 1 is high, so that the lithium chloride film on the electrode surface can be removed in a short time. Further, when the voltage recovery rate α is small, the power supply capability of the lithium battery 1 is small, so that a long-time power supply is required to remove the lithium chloride film.
【００１３】しかし、リチウム電池１の給電能力が低い
状態で長時間の通電エネルギーを費やすことはリチウム
電池１の消耗を速めるのでリチウム電池1に形成される
被膜が十分厚くなった場合にこれを除去できる最長放電
時間Ｔｃ２を電圧回復率αと放電時間Ｔｃとの関係に設
定しておく。この最長放電時間Ｔｃ２は実験によって求
めたものを使用する。実験の結果、最長放電時間Ｔｃ２
は２０〜４０ミリ秒（ｍｓ）である。また、リチウム電
池１が比較的新しく給電能力が高い場合は、できるだけ
通電を短くして電池の消耗を抑制することが肝要であ
る。図３に示す電圧波形を利用して説明すると、放電開
始から過渡最低電圧Ｖａまでと、過渡最低電圧Ｖａから
電圧回復率αを検出するための微小所定時間Ｔoと、判
定処理に要する時間の合計でよい。この最短放電時間Ｔ
ｃ１は３〜５ｍｓである。However, consuming long-time energizing energy in a state where the power supply capability of the lithium battery 1 is low accelerates the consumption of the lithium battery 1, and is removed when the film formed on the lithium battery 1 becomes sufficiently thick. The longest possible discharge time Tc2 is set in a relationship between the voltage recovery rate α and the discharge time Tc. The longest discharge time Tc2 is obtained by an experiment. As a result of the experiment, the longest discharge time Tc2
Is 20 to 40 milliseconds (ms). Further, when the lithium battery 1 is relatively new and has a high power supply capability, it is important to reduce power supply as much as possible to suppress battery consumption. Explaining with reference to the voltage waveform shown in FIG. 3, the sum of the time from the start of discharge to the minimum transient voltage Va, the minute predetermined time To detect the voltage recovery rate α from the minimum transient voltage Va, and the time required for the determination process Is fine. This shortest discharge time T
c1 is 3 to 5 ms.
【００１４】電圧回復率αが予め設定した下限値αｅよ
り小さくなると、放電時間はＴｃ２で一定となる様に設
定しており、電圧回復率αが予め設定した上限値αｓよ
り大きいときの放電時間は最短放電時間Ｔｃ１で一定な
る様に設定している。この最短放電時間Ｔｃ１は後述す
る処理ステップ３１の放電時間にも使用する。When the voltage recovery rate α becomes smaller than a predetermined lower limit value αe, the discharge time is set to be constant at Tc2, and the discharge time when the voltage recovery rate α is larger than a predetermined upper limit value αs Is set to be constant at the shortest discharge time Tc1. This shortest discharge time Tc1 is also used for a discharge time of a processing step 31 described later.
【００１５】本発明の動作を図２により説明する。パル
ス発生回路３から一定周期でパルス信号を出力する（ス
テップ２１）。放電回路２がオンとなりリチウム電池１
は放電を開始し、放電回路２に印加し放電時間の計時を
始める（ステップ２２）。電圧検出回路６０は放電中の
過渡最低電圧Ｖａを検出する（ステップ２３）。電圧判
定回路５０では過渡最低電圧Ｖａと基準電圧Ｖｂの比較
を行う（ステップ２４）。Ｖａ＞Ｖｂの場合はリチウム
電池１の給電能力が高いので最短放電時間を選択をする
（ステップ３１）。Ｖａ＜Ｖｂのときは電圧回復率αを
算定検知する（ステップ２５）。メモリ回路に収納され
ている電圧回復率αと放電時間Ｔｃとの関係に対応して
検知された電圧回復率αから活性化放電時間を選定する
（ステップ２５）。ステップ２２において計時を開始し
た放電開始からの時間が選定された活性化放電時間に達
したら放電を停止する（ステップ２７）。The operation of the present invention will be described with reference to FIG. A pulse signal is output from the pulse generation circuit 3 at a constant cycle (step 21). The discharge circuit 2 turns on and the lithium battery 1
Starts discharging, and applies the voltage to the discharging circuit 2 to start measuring the discharging time (step 22). The voltage detection circuit 60 detects the lowest transient voltage Va during discharging (step 23). The voltage determination circuit 50 compares the lowest transient voltage Va with the reference voltage Vb (step 24). If Va> Vb, the shortest discharge time is selected because the power supply capability of the lithium battery 1 is high (step 31). When Va <Vb, the voltage recovery rate α is calculated and detected (step 25). The activation discharge time is selected from the detected voltage recovery rate α corresponding to the relationship between the voltage recovery rate α stored in the memory circuit and the discharge time Tc (step 25). When the time from the start of the discharge at which the time measurement was started in step 22 reaches the selected activation discharge time, the discharge is stopped (step 27).
【００１６】そして、電圧回復率αをあらかじめ設定し
ている下限値αｅと比較を行う（ステップ２８）。この
とき電圧回復率αが下限値αｅよりも小さくなれば、リ
チウム電池１の給電能力が非常に低下して寿命が近いこ
と検出できるので、その検出信号を出力してコンピュー
タ９のデータを不揮発性メモリ１０に保存させる処理を
行い、また表示器７へリチウム電池１の取替え要求等を
表示する（ステップ２９、３０）。Then, the voltage recovery rate α is compared with a preset lower limit value αe (step 28). At this time, if the voltage recovery rate α becomes smaller than the lower limit value αe, it is possible to detect that the power supply capability of the lithium battery 1 is extremely reduced and the life is short, so that the detection signal is output to make the data of the computer 9 non-volatile. A process for storing the battery in the memory 10 is performed, and a request for replacement of the lithium battery 1 is displayed on the display 7 (steps 29 and 30).
【００１７】[0017]
【発明の効果】以上のようにこの発明では、リチウム電
池の過渡最低電圧からの電圧回復率を求めることによ
り、リチウム電池の給電能力と被膜除去状況を把握し
て、最も短時間で被膜除去ができる活性化通電時間を選
択することができるので、ムダな電池エネルギーの消耗
が抑制されリチウム電池の長寿命化がはかれる。As described above, according to the present invention, the voltage recovery rate from the transient minimum voltage of the lithium battery is obtained, the power supply capability of the lithium battery and the film removal status are grasped, and the film removal can be performed in the shortest time. Since the activation activation time that can be selected can be selected, wasteful energy consumption of the battery is suppressed, and the life of the lithium battery is extended.
【００１８】また、電圧回復率の監視により、リチウム
電池の給電能力からリチウム電池の寿命をを把握して、
この通知信号により事前にコンピュータのデータ保護を
はかることができる。Further, by monitoring the voltage recovery rate, the life of the lithium battery is grasped from the power supply capability of the lithium battery,
With this notification signal, the data of the computer can be protected in advance.
【図１】 この発明の実施の形態１のリチウム電池の活
性化回路の構成図である。FIG. 1 is a configuration diagram of an activation circuit of a lithium battery according to Embodiment 1 of the present invention.
【図２】 この発明の実施の形態１のリチウム電池の活
性化方法を示すフローチャートである。FIG. 2 is a flowchart showing a method for activating a lithium battery according to Embodiment 1 of the present invention.
【図３】 この発明のリチウム電池から電流放電させた
ときの電圧波形を示す図である。FIG. 3 is a diagram showing a voltage waveform when a current is discharged from the lithium battery of the present invention.
【図４】 電圧回復率と放電時間設定の関係を示すグラ
フである。FIG. 4 is a graph showing a relationship between a voltage recovery rate and a discharge time setting.
【図５】 従来のリチウム電池の活性化回路の構成を示
す図である。FIG. 5 is a diagram showing a configuration of a conventional lithium battery activation circuit.
１ リチウム電池、 ２ 放電回路、 ３０パルス
発生回路 ５０ 電圧判定回路、６０ 電圧検出回路、 ７ 表
示器 ８ ダイオード、 ９ コンピュータ、 １０ 不
揮発性メモリ α 電圧回復率、 Ｖａ 過渡最低電圧、 Ｖｂ
基準電圧 Ｔｃ 放電時間Reference Signs List 1 lithium battery, 2 discharge circuit, 30 pulse generation circuit 50 voltage judgment circuit, 60 voltage detection circuit, 7 display 8 diode, 9 computer, 10 nonvolatile memory α voltage recovery rate, Va transient minimum voltage, Vb
Reference voltage Tc Discharge time
Claims (5)
流を放電させるステップ、前記放電通電中にリチウム電
池の電圧を測定し過渡最低電圧Ｖａを検出するステッ
プ、前記過渡最低電圧Ｖａからの回復上昇電圧の時間正
接である電圧回復率αを求めるステップ、予め設定され
ている電圧回復率αと通電時間の関係から電圧回復率α
に対応した通電時間を選定して活性化電流の放電時間を
設定するステップを備えていることを特徴とするリチウ
ム電池の活性化方法。1. A step of discharging an activation current from a lithium battery at a constant period, a step of measuring a voltage of the lithium battery during the discharge and detecting a minimum transient voltage Va, and an increase in recovery from the minimum transient voltage Va A step of obtaining a voltage recovery rate α that is a time tangent of a voltage; and a voltage recovery rate α based on a relationship between a preset voltage recovery rate α and a conduction time.
A method for activating a lithium battery, comprising the steps of: selecting an energizing time corresponding to (a) and setting a discharge time of an activation current.
基準電圧と過渡最低電圧Ｖａとを比較するステップ、前
記比較ステップの中で検出された過渡最低電圧Ｖａが前
記基準電圧より大きいとき活性化電流の放電時間を電圧
回復率αと通電時間の関係の最少一定時間としたことを
特徴とする請求項１記載のリチウム電池の活性化方法。2. A step of comparing a predetermined reference voltage lower than a rated voltage of the lithium battery with a transient minimum voltage Va, and an activation current when the transient minimum voltage Va detected in the comparing step is higher than the reference voltage. 2. The method for activating a lithium battery according to claim 1, wherein the discharging time of the lithium battery is a minimum constant time in a relationship between the voltage recovery rate α and the energizing time.
ウム電池が寿命に至ったとして、その通知出力をするこ
とを特徴する請求項１または請求項２記載のリチウム電
池の活性化方法。3. The method for activating a lithium battery according to claim 1, wherein when the voltage recovery rate α is equal to or less than a predetermined value, it is determined that the lithium battery has reached the end of its life and a notification is output.
流を放電させる放電回路、前記放電通電中にリチウム電
池の電圧を測定し過渡最低電圧Ｖａを検出する電圧検出
回路、前記過渡最低電圧Ｖａからの上昇電圧の時間正接
である電圧回復率αを求め、予め設定されている電圧回
復率αと通電時間の関係から電圧回復率αに対応した通
電時間を選定して活性化電流の放電時間を設定する電圧
判定回路を備えていることを特徴とするリチウム電池の
活性化回路。4. A discharge circuit for discharging an activation current from a lithium battery at a constant period, a voltage detection circuit for measuring a voltage of the lithium battery during the discharge and detecting a minimum transient voltage Va, The voltage recovery rate α, which is the time tangent of the rising voltage of the voltage, is determined, and the energization time corresponding to the voltage recovery rate α is selected from the relationship between the preset voltage recovery rate α and the energization time to determine the discharge time of the activation current An activation circuit for a lithium battery, comprising a voltage determination circuit for setting.
ウム電池が寿命に至ったとして、接続されるコンピュー
タのデータを不揮発性メモリに書き込みデータを待避さ
せる保護手段を備えていることを特徴とする請求項４記
載のリチウム電池の活性化回路。5. When the voltage recovery rate α is equal to or less than a predetermined value, it is determined that the lithium battery has reached the end of its life, and protection means is provided for writing data of a connected computer to a nonvolatile memory and saving the data. The activation circuit for a lithium battery according to claim 4, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25697899A JP2001086654A (en) | 1999-09-10 | 1999-09-10 | Method and circuit for activating lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25697899A JP2001086654A (en) | 1999-09-10 | 1999-09-10 | Method and circuit for activating lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001086654A true JP2001086654A (en) | 2001-03-30 |
Family
ID=17300030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25697899A Pending JP2001086654A (en) | 1999-09-10 | 1999-09-10 | Method and circuit for activating lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001086654A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163864A (en) * | 2011-04-12 | 2011-08-24 | 北京理工大学 | High power quick impulse charging system with adjustable positive and negative impulses for electric automobiles |
| JP2012029489A (en) * | 2010-07-26 | 2012-02-09 | Brother Ind Ltd | Electronic apparatus |
| JP2012195161A (en) * | 2011-03-16 | 2012-10-11 | Toyota Motor Corp | Battery system, vehicle, and capacity recovery method of lithium ion secondary battery |
| CN103700902A (en) * | 2014-01-14 | 2014-04-02 | 深圳市思达仪表有限公司 | Method and device for judging and activating voltage lag of lithium thionyl chloride battery |
| CN110233517A (en) * | 2018-03-06 | 2019-09-13 | 硕天科技股份有限公司 | Uninterrupted power system and its cell activation operating method |
-
1999
- 1999-09-10 JP JP25697899A patent/JP2001086654A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012029489A (en) * | 2010-07-26 | 2012-02-09 | Brother Ind Ltd | Electronic apparatus |
| JP2012195161A (en) * | 2011-03-16 | 2012-10-11 | Toyota Motor Corp | Battery system, vehicle, and capacity recovery method of lithium ion secondary battery |
| CN102163864A (en) * | 2011-04-12 | 2011-08-24 | 北京理工大学 | High power quick impulse charging system with adjustable positive and negative impulses for electric automobiles |
| CN103700902A (en) * | 2014-01-14 | 2014-04-02 | 深圳市思达仪表有限公司 | Method and device for judging and activating voltage lag of lithium thionyl chloride battery |
| CN110233517A (en) * | 2018-03-06 | 2019-09-13 | 硕天科技股份有限公司 | Uninterrupted power system and its cell activation operating method |
| CN110233517B (en) * | 2018-03-06 | 2023-06-23 | 硕天科技股份有限公司 | Uninterruptible power system and battery activation operation method thereof |
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