JP2001112185A - Apparatus and method for control of charging - Google Patents
Apparatus and method for control of chargingInfo
- Publication number
- JP2001112185A JP2001112185A JP28324099A JP28324099A JP2001112185A JP 2001112185 A JP2001112185 A JP 2001112185A JP 28324099 A JP28324099 A JP 28324099A JP 28324099 A JP28324099 A JP 28324099A JP 2001112185 A JP2001112185 A JP 2001112185A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- temperature
- charging
- voltage
- fully charged
- 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
- Tests Of Electric Status Of Batteries (AREA)
- 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】本発明は、例えば無停電給電
システムに用いられるバッテリの充電制御装置に係り、
特にバッテリの満充電を判定する充電制御装置及び方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery charge control device used in, for example, an uninterruptible power supply system.
In particular, the present invention relates to a charge control device and a method for determining full charge of a battery.
【０００２】[0002]
【従来の技術】従来より、無停電給電システムは、定電
圧定電流回路とバックアップ用ニッケルカドミウム（以
降ニッカドと略称する）バッテリで構成されるバッテリ
充電システムを備えている。このバッテリ充電システム
の充電制御装置は、バッテリが満充電となったことを検
出し、その時点で充電を停止してバッテリが過充電とな
るのを防止している。2. Description of the Related Art Conventionally, an uninterruptible power supply system includes a battery charging system composed of a constant voltage / constant current circuit and a nickel cadmium (nickel) battery for backup. The charge control device of this battery charging system detects that the battery is fully charged, stops charging at that point, and prevents the battery from being overcharged.
【０００３】図６は従来のバックアップ用ニッカドバッ
テリを充電する方法を示したフローチャートである。ス
テップＳ６１で、充電を開始したら、ステップＳ６２
で、タイマにより充電時間をカウントする。ステップＳ
６３において、前記タイマによりカウントした充電時間
が規定時間を経過したかどうかを判定し、充電時間が規
定時間を経過するまで充電を継続する。FIG. 6 is a flowchart showing a conventional method for charging a backup nicd battery. If charging is started in step S61, step S62
Then, the charging time is counted by the timer. Step S
At 63, it is determined whether or not the charging time counted by the timer has exceeded a specified time, and charging is continued until the charging time has elapsed.
【０００４】一方、充電時間が規定時間を経過すると、
ステップＳ６４に進み、バッテリの満充電を検出して、
満充電信号を出力して、バッテリへの充電を停止する。
その後、バッテリの自己放電によるバッテリ容量低下を
補償するため、ステップＳ６５において微小電流による
トリクル充電を行う。このトリクル充電は放電待機中継
続して行なわれる。On the other hand, when the charging time exceeds a specified time,
Proceed to step S64 to detect full charge of the battery,
A full charge signal is output to stop charging the battery.
Thereafter, in order to compensate for a decrease in battery capacity due to self-discharge of the battery, trickle charging with a small current is performed in step S65. This trickle charge is performed continuously during the discharge standby.
【０００５】[0005]
【発明が解決しようとする課題】上記のような従来のバ
ッテリの充電において、ニッカドバッテリの充電時間は
周囲温度と充電電流の大きさにより影響される。一般に
ニッカドバッテリの充電時間は周囲温度が低く、充電電
流が大きくなるほど短くなる。In the conventional battery charging as described above, the charging time of the NiCd battery is affected by the ambient temperature and the magnitude of the charging current. In general, the charging time of a nickel-cadmium battery becomes shorter as the ambient temperature is lower and the charging current is larger.
【０００６】従って、規定充電時間は、バッテリの充電
電流値と装置の使用が想定される最高温度とに依存する
満充電となる時間から決定される。このため、タイマに
よる充電制御のみでは、周囲温度が低い場合に過充電と
なってしまう恐れがある。逆に温度が低い場合に合わせ
ると、温度が高い場合に、充電不足となる。Therefore, the prescribed charging time is determined from the time when the battery is fully charged depending on the charging current value of the battery and the maximum temperature at which the device is expected to be used. For this reason, if only the charging control is performed by the timer, there is a possibility that overcharging may occur when the ambient temperature is low. Conversely, when the temperature is low, the charging becomes insufficient when the temperature is high.
【０００７】また、バックアップ用途におけるバッテリ
の充電は常に容量０の状態からではなく、様々な残存容
量状態からの充電となる。特に短い時間だけ放電を行
い、直ぐに復電した場合、バッテリの充電中ほとんどの
時間で過充電状態となり、バッテリ劣化の原因となる。[0007] Further, charging of a battery for backup use is not always performed from the state of zero capacity, but is performed from various remaining capacity states. In particular, when the battery is discharged only for a short period of time and the power is restored immediately, the battery is overcharged most of the time during charging, which causes deterioration of the battery.
【０００８】本発明は、上述の如き従来の課題を解決す
るためになされたもので、その目的は、周囲温度や直前
の放電容量の大きさに拘らず満充電状態を精度良く検出
することができ、これにより、バッテリが過充電となる
ことを確実に防止することができる充電制御装置及び充
電制御方法を提供することである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to accurately detect a full charge state regardless of the ambient temperature or the magnitude of the immediately preceding discharge capacity. It is possible to provide a charge control device and a charge control method that can reliably prevent the battery from being overcharged.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、請求項１の発明の特徴は、バッテリを満充電まで充
電する制御を行う充電制御装置において、前記バッテリ
の温度を検出する温度検出手段と、充電中の前記バッテ
リの温度から最低温度を検出して保持する最低温度検出
手段と、充電中の前記バッテリの温度と前記最低温度と
により前記バッテリの前記最低温度からの温度上昇幅を
求めて監視する監視手段と、前記温度上昇幅と基準値を
比較し、前記温度上昇幅が基準値を超えた場合、前記バ
ッテリが満充電になったと判定する温度判定手段と、前
記温度判定手段により前記バッテリが満充電になったと
判定されると、前記バッテリへの充電を停止する温度制
御手段とを具備することにある。According to a first aspect of the present invention, there is provided a charge control device for controlling a battery to be fully charged until a temperature of the battery is detected. Means, a minimum temperature detecting means for detecting and holding a minimum temperature from the temperature of the battery during charging, and a temperature increase range from the minimum temperature of the battery by the temperature of the battery during charging and the minimum temperature. Monitoring means for obtaining and monitoring, comparing the temperature rise width with a reference value, and when the temperature rise width exceeds a reference value, temperature determination means for determining that the battery is fully charged, and the temperature determination means And temperature control means for stopping charging the battery when it is determined that the battery is fully charged.
【００１０】請求項２の発明の前記最低温度検出手段
は、前記温度検出手段によって検出された前記バッテリ
の温度が既に検出してメモリに保持してある前記最低温
度より低い場合、今回の検出温度を新たな最低温度とす
ることにより、前記バッテリの最低温度を検出する。[0010] The minimum temperature detecting means according to the present invention, when the temperature of the battery detected by the temperature detecting means is lower than the minimum temperature already detected and stored in the memory, the current detected temperature. Is set as a new minimum temperature, thereby detecting the minimum temperature of the battery.
【００１１】請求項３の発明の特徴は、前記バッテリの
充電開始直前に検出した前記バッテリの温度が所定温度
を超えている場合、前記充電開始直前の温度が所定温度
以下になるまで、前記バッテリの充電開始を休止する充
電前制御手段を設けたことにある。A third feature of the present invention is that, when the temperature of the battery detected immediately before the start of charging of the battery exceeds a predetermined temperature, the battery is maintained until the temperature immediately before the start of charging becomes equal to or lower than the predetermined temperature. There is provided a pre-charging control means for suspending the start of charging.
【００１２】請求項４の発明の特徴は、前記バッテリの
充電開始からの時間を計時するタイマ手段と、前記タイ
マ手段による計時時間が所定時間経過した時点で、前記
温度判定手段が前記バッテリの満充電を判定していなく
とも、前記バッテリが満充電になったと判定して前記バ
ッテリへの充電を停止するタイマ制御手段とを設けたこ
とにある。The invention according to claim 4 is characterized in that timer means for measuring the time from the start of charging of the battery, and when the time measured by the timer means elapses a predetermined time, the temperature judging means determines whether the battery is full. Timer control means for judging that the battery is fully charged and stopping the charging of the battery even when the charge is not judged is provided.
【００１３】請求項５の発明の特徴は、前記バッテリの
電圧を検出する電圧検出手段と、前記電圧検出手段から
得られる前記充電中のバッテリの電圧からそのピーク電
圧を検出して保持するピーク電圧検出手段と、前記ピー
ク電圧と前記電圧検出手段から得られる前記充電中のバ
ッテリの電圧を比較し、前記充電中のバッテリの電圧が
前記ピーク電圧から所定電圧以下に低下した時点を前記
バッテリの満充電と判定する電圧判定手段と、前記電圧
判定手段が前記バッテリの満充電を判定した時点で、前
記温度判定手段が前記バッテリの満充電を判定していな
くとも、前記バッテリが満充電になったと判定して前記
バッテリへの充電を停止する電圧制御手段とを設けたこ
とにある。According to a fifth aspect of the present invention, a voltage detecting means for detecting the voltage of the battery, and a peak voltage for detecting and holding the peak voltage from the voltage of the battery being charged obtained from the voltage detecting means. Detecting means for comparing the peak voltage with the voltage of the battery being charged obtained from the voltage detecting means, and determining when the voltage of the battery being charged has fallen from the peak voltage to a predetermined voltage or less. Voltage determination means for determining charge, and when the voltage determination means determines that the battery is fully charged, the temperature determination means does not determine whether the battery is fully charged, and the battery is fully charged. Voltage control means for determining and stopping charging of the battery.
【００１４】請求項６の発明の特徴は、前記バッテリの
電圧を検出する電圧検出手段と、前記電圧検出手段から
得られる前記充電中のバッテリの電圧からそのピーク電
圧を検出して保持するピーク電圧検出手段と、前記ピー
ク電圧と前記電圧検出手段から得られる前記充電中のバ
ッテリの電圧を比較し、前記充電中のバッテリの電圧が
前記ピーク電圧から所定電圧以下に低下した時点を前記
バッテリの満充電と判定する電圧判定手段と、前記電圧
判定手段が前記バッテリの満充電を判定した時点で、前
記温度判定手段が前記バッテリの満充電を判定していな
くとも、前記バッテリが満充電になったと判定して、前
記バッテリへの充電を停止する電圧制御手段と、前記バ
ッテリの充電開始からの時間を計時するタイマ手段と、
前記タイマ手段による計時時間が所定時間経過した時点
で、前記温度判定手段又は前記電圧判定手段が前記バッ
テリの満充電を判定していなくとも、前記バッテリが満
充電になったと判定して前記バッテリへの充電を停止す
るタイマ制御手段とを設けたことにある。According to a sixth aspect of the present invention, a voltage detecting means for detecting the voltage of the battery, and a peak voltage for detecting and holding the peak voltage from the voltage of the battery being charged obtained from the voltage detecting means. Detecting means for comparing the peak voltage with the voltage of the battery being charged obtained from the voltage detecting means, and determining when the voltage of the battery being charged has fallen from the peak voltage to a predetermined voltage or less. Voltage determination means for determining charge, and when the voltage determination means determines that the battery is fully charged, the temperature determination means does not determine whether the battery is fully charged, and the battery is fully charged. Determining, voltage control means for stopping charging of the battery, and timer means for measuring time from the start of charging of the battery,
At the point in time when the time measured by the timer has passed a predetermined time, even if the temperature determining means or the voltage determining means has not determined that the battery is fully charged, it is determined that the battery is fully charged and the battery is determined to be fully charged. And a timer control means for stopping the charging of the battery.
【００１５】請求項７の発明の特徴は、前記バッテリの
満充電を判定して、前記バッテリへの充電を停止した
後、前記バッテリに微小電流によるトリクル充電をバッ
テリの放電要求があるまで行うことにある。A feature of the present invention is that, after determining that the battery is fully charged and stopping charging the battery, trickle charging is performed on the battery by a very small current until a request for discharging the battery is issued. It is in.
【００１６】請求項８の発明の前記バッテリはニッケル
カドミウムバッテリである。The battery according to the invention of claim 8 is a nickel cadmium battery.
【００１７】請求項９の発明の特徴は、バッテリを満充
電まで充電する制御を行う充電制御方法において、前記
バッテリの温度を検出する温度検出過程と、充電中の前
記バッテリの温度から最低温度を検出して保持する最低
温度検出過程と、充電中の前記バッテリの温度と前記最
低温度とにより前記バッテリの前記最低温度からの温度
上昇幅を求めて監視する監視過程と、前記温度上昇幅と
基準値を比較し、前記温度上昇幅が基準値を超えた場
合、前記バッテリが満充電になったと判定する温度判定
過程と、前記温度判定過程により前記バッテリが満充電
になったと判定されると、前記バッテリへの充電を停止
する温度制御過程と、前記バッテリの充電開始からの時
間を計時する計時過程と、前記計時過程による計時時間
が所定時間経過した時点で、前記温度判定過程が前記バ
ッテリの満充電を判定していなくとも、前記バッテリが
満充電になったと判定して、前記バッテリへの充電を停
止するタイマ制御過程とを具備することにある。According to a ninth aspect of the present invention, there is provided a charge control method for controlling a battery to be fully charged until the temperature of the battery is detected. A minimum temperature detection step of detecting and holding; a monitoring step of obtaining and monitoring a temperature rise from the minimum temperature of the battery based on the temperature of the battery during charging and the minimum temperature; and Comparing the values, if the temperature rise width exceeds a reference value, a temperature determination step to determine that the battery is fully charged, and when it is determined that the battery is fully charged by the temperature determination step, A temperature control step of stopping the charging of the battery, a timing step of timing the time from the start of charging of the battery, and a predetermined time elapsed by the timing step. In this regard, the temperature determining step may include a timer control step of determining that the battery is fully charged and stopping charging the battery even if the battery is not fully charged. .
【００１８】[0018]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図１は、本発明の充電制御装置の
第１の実施の形態を示したブロック図である。充電制御
装置は、バッテリ（本例ではニッカドバッテリ）５に定
電流充電する充電器１、充電器１の充電出力端子２から
バッテリ５へ流れる電流を検出する電流検出器３、ニッ
カドバッテリ５の温度を検出する温度センサ（サーミス
タ）４、充電対象のバッテリ（例えば２５ｃｅｌｌ直列
で、１．２Ｖ／ｃｅｌｌ、４Ａｈ）５の電圧を検出する
電圧検出器６、バッテリ５の温度によりバッテリ５の充
電の開始、停止などを制御する温度制御部７、充電時間
によりバッテリ５の充電の停止などを制御するタイマ制
御部８、充電器１の充電の開始、停止及び充電電流の制
御などを行う充電制御部９から成っている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a first embodiment of the charge control device of the present invention. The charging control device includes a charger 1 for charging a battery (NiCd battery in this example) 5 with a constant current, a current detector 3 for detecting a current flowing from the charging output terminal 2 of the charger 1 to the battery 5, and a temperature of the NiCd battery 5. , A temperature detector (thermistor) 4 for detecting the voltage, a voltage detector 6 for detecting the voltage of the battery to be charged (for example, 1.2 V / cell, 4 Ah in a 25-cell series), and the start of charging of the battery 5 based on the temperature of the battery 5 , A temperature control unit 7 for controlling the stop and the like, a timer control unit 8 for controlling the stop of the charging of the battery 5 based on the charging time, a charging control unit 9 for starting and stopping the charging of the charger 1 and controlling the charging current. Consists of
【００１９】次に本実施の形態の充電制御装置により実
現する充電制御方法について図２のフローチャートを参
照して説明する。本例の充電制御装置は、充電前制御、
充電制御、トリクル充電制御の３段階の制御動作を行
う。まず、充電前制御は高温状態のバッテリ５を充電し
ないようにして、所定温度（例えば１００℃）以下のバ
ッテリ５を充電するために行う制御である。Next, a charge control method realized by the charge control device of the present embodiment will be described with reference to the flowchart of FIG. The charge control device of the present example includes a pre-charge control,
A three-stage control operation of charge control and trickle charge control is performed. First, the pre-charging control is a control performed to charge the battery 5 at a predetermined temperature (for example, 100 ° C.) or lower while preventing the battery 5 in a high temperature state from being charged.
【００２０】例えば周囲温度が高く、直前の放電が大電
流放電であった場合、放電終了直後のバッテリ５の温度
は充電時の許容温度範囲を超えるほどの高温となる。こ
のような状況で直ぐにバッテリ５を充電するのはバッテ
リ５を劣化させる原因になる。For example, when the ambient temperature is high and the immediately preceding discharge is a large-current discharge, the temperature of the battery 5 immediately after the end of the discharge becomes high enough to exceed the allowable temperature range during charging. Immediately charging the battery 5 in such a situation causes the battery 5 to deteriorate.
【００２１】そこで、図２のステップＳ１１にて、充電
制御が開始されると、温度制御部７はステップＳ１２に
て、温度センサ４によりバッテリ５の温度を検出し、ス
テップＳ１３にて、検出温度が所定温度（１００℃）を
超えているかどうかを判定し、超えている場合はステッ
プＳ１４にて、充電制御部９に充電休止信号を出力し
て、バッテリ５への充電を開始せず、充電休止状態にす
る。Therefore, when charging control is started in step S11 of FIG. 2, the temperature controller 7 detects the temperature of the battery 5 by the temperature sensor 4 in step S12, and detects the detected temperature in step S13. Is higher than a predetermined temperature (100 ° C.), and if it is higher than the predetermined temperature (100 ° C.), a charge pause signal is output to the charge control unit 9 in step S14, and charging of the battery 5 is not started. Put into hibernation.
【００２２】一方、ステップＳ１３で、バッテリ５の検
出温度が所定温度を超えていないと判定された場合、温
度制御部７はステップＳ１５で内蔵のメモリを初期化し
て前回の記録データをクリアする。On the other hand, if it is determined in step S13 that the detected temperature of the battery 5 has not exceeded the predetermined temperature, the temperature controller 7 initializes the built-in memory in step S15 and clears the previous recording data.
【００２３】温度制御部７はステップＳ１６で温度セン
サ４によりバッテリの初期温度（Ｔｍｉｎ）を検出し
て、これをメモリに記録し、ステップＳ１７で、充電制
御部９に充電開始信号を出力して充電を開始する。これ
により、充電制御部９は充電器１を動作させ、充電器１
はバッテリ５に対して充電を開始する。The temperature control unit 7 detects the initial temperature (Tmin) of the battery by the temperature sensor 4 in step S16, records this in a memory, and outputs a charge start signal to the charge control unit 9 in step S17. Start charging. As a result, the charging control unit 9 operates the charger 1 and
Starts charging the battery 5.
【００２４】その際、電流検出器３で検出された充電電
流と電圧検出器６で検出されたバッテリ５の電圧が充電
制御部９にフィードバックされ、充電制御部９はバッテ
リ５に対して定電流充電（例えば充電電流０．３Ｃ）が
行われるように充電器１を制御する。At this time, the charging current detected by the current detector 3 and the voltage of the battery 5 detected by the voltage detector 6 are fed back to the charging control unit 9, and the charging control unit 9 supplies a constant current to the battery 5. The charger 1 is controlled so that charging (for example, charging current of 0.3 C) is performed.
【００２５】上記のように充電が開始されると同時に、
タイマ制御部８はステップＳ１８で時間の計時を開始す
る。又、温度制御部７はステップＳ１９にて、温度セン
サ４によりバッテリ５の温度を検出し、その時の検出温
度（Ｔｅｍｐ）と最低温度（Ｔｍｉｎ）とをステップＳ
２０で比較し、検出温度（Ｔｅｍｐ）＞最低温度（Ｔｍ
ｉｎ）でないならば、ステップＳ２２に進んで、検出温
度（Ｔｅｍｐ）を最低温度（Ｔｍｉｎ）として、最低温
度を更新した後、ステップＳ２３に進む。At the same time as the charging is started as described above,
The timer control unit 8 starts measuring time in step S18. In step S19, the temperature controller 7 detects the temperature of the battery 5 with the temperature sensor 4, and determines the detected temperature (Temp) and the minimum temperature (Tmin) at that time in step S19.
20 and the detected temperature (Temp)> minimum temperature (Tm
If not (in), the process proceeds to step S22, the detected temperature (Temp) is set to the minimum temperature (Tmin), the minimum temperature is updated, and the process proceeds to step S23.
【００２６】ステップＳ２３では、タイマ制御部８は充
電を開始してから規定時間（例えば０．３Ｃで４時間）
経過したかを判定し、規定時間経過していない場合はス
テップＳ１８に戻り、規定時間経過した場合は充電停止
信号を充電制御部９に出力してステップＳ２４に進む。In step S23, the timer control section 8 sets a prescribed time (for example, 4 hours at 0.3 C) from the start of charging.
It is determined whether the time has elapsed. If the specified time has not elapsed, the process returns to step S18. If the specified time has elapsed, a charge stop signal is output to the charge control unit 9, and the process proceeds to step S24.
【００２７】一方、ステップＳ２０にて、検出温度（Ｔ
ｅｍｐ）＞最低温度（Ｔｍｉｎ）であると判定されたな
らば、温度制御部７はステップＳ２１に進み、検出温度
（Ｔｅｍｐ）＞最低温度（Ｔｍｉｎ）＋Ｔα（温度基準
値）であるかどうかを判定し、その場合は、充電制御部
９に充電停止信号を出力して、ステップＳ２４に進む。
尚、Ｔαは例えば１０℃で、最低温度からの温度上昇幅
のことである。On the other hand, at step S20, the detected temperature (T
If it is determined that (emp)> minimum temperature (Tmin), the temperature controller 7 proceeds to step S21, and determines whether or not the detected temperature (Temp)> minimum temperature (Tmin) + Tα (temperature reference value). In that case, a charge stop signal is output to the charge control unit 9, and the process proceeds to step S24.
Here, Tα is, for example, 10 ° C., which is a temperature rise from the lowest temperature.
【００２８】充電制御部９はステップＳ２４にて、充電
停止信号を受けると、充電器１に満充電信号を出力し
て、バッテリ５への充電を停止する。その後、充電制御
部９はステップＳ２５で、微小電流によるトリクル充電
（例えば充電電流１／３０Ｃ）をバッテリ５の放電の要
求があるまで継続して行うトリクル充電制御に移行し、
その後、ステップＳ２６で、充電制御を終了する。Upon receiving the charge stop signal in step S24, the charge control section 9 outputs a full charge signal to the charger 1 to stop charging the battery 5. After that, in step S25, the charging control unit 9 shifts to trickle charging control in which trickle charging (for example, charging current 1 / 30C) with a small current is continuously performed until there is a request for discharging the battery 5.
After that, in step S26, the charging control ends.
【００２９】尚、トリクル充電制御は充電終了後の自己
放電によるバッテリ５の容量低下を補償し、バッテリ５
の容量を維持させ、常に満充電状態から放電が行えるよ
うにするために行うものである。The trickle charge control compensates for a decrease in the capacity of the battery 5 due to self-discharge after the end of charging, and
This is performed in order to maintain the capacity of the battery and to always allow discharging from the fully charged state.
【００３０】ここで、温度制御部７が検出温度（Ｔｅｍ
ｐ）＞最低温度（Ｔｍｉｎ）＋Ｔαとなると、バッテリ
５が満充電になったと判断して、バッテリ５への充電を
停止する制御を行う原理について図３を用いて説明して
おく。ニッカドバッテリの充電特性は図３の５１、５２
に示すように、充電電圧は温度に拘らず充電開始から満
充電に至るまでは上昇し、満充電時にピークとなり、そ
の後は低下して行く。Here, the temperature controller 7 detects the detected temperature (Tem).
When p)> minimum temperature (Tmin) + Tα, the principle of determining that the battery 5 is fully charged and performing control to stop charging the battery 5 will be described with reference to FIG. The charging characteristics of the NiCd battery are shown in FIG.
As shown in (2), the charging voltage rises from the start of charging to full charge regardless of the temperature, reaches a peak at the time of full charge, and thereafter decreases.
【００３１】また、バッテリ５の温度（高温時、低温
時）は図３の６１、６２に示すように、充電開始から満
充電に至るまでは周囲温度とほぼ同じ温度を保ち、満充
電になってからは一定の割合で上昇する。これら特性は
周囲温度がバッテリの使用可能温度範囲内で変化しても
変わらず、更に、充電開始時のバッテリの残存容量に依
存しないことを意味している。The temperature of the battery 5 (at the time of high temperature and at the time of low temperature) is substantially the same as the ambient temperature from the start of charging to the full charge, as shown at 61 and 62 in FIG. After that, it rises at a certain rate. These characteristics do not change even if the ambient temperature changes within the usable temperature range of the battery, and furthermore, it does not depend on the remaining capacity of the battery at the start of charging.
【００３２】従って、バッテリ５の温度が充電中の最低
温度から所定温度（温度基準値）上昇したところが、満
充電状態と一致する。この満充電状態の検出は、最低温
度の絶対値によらず、最低温度からの温度上昇幅（温度
基準値）にのみ依存している。Therefore, the point where the temperature of the battery 5 rises by a predetermined temperature (temperature reference value) from the lowest temperature during charging coincides with the fully charged state. The detection of the fully charged state depends only on the temperature rise from the minimum temperature (temperature reference value), not on the absolute value of the minimum temperature.
【００３３】上記の理由により本実施の形態によれば、
充電中のバッテリ５の温度がその最低温度から温度基準
値上昇した時点を検出し、この時点をバッテリ５の満充
電と判定して、バッテリ５の定電流充電を停止すること
により、バッテリ５を過充電から保護することができ
る。According to the present embodiment for the above reasons,
By detecting the point in time when the temperature of the battery 5 being charged rises from the minimum temperature to the temperature reference value, determining that this point is the full charge of the battery 5, and stopping the constant current charging of the battery 5, the battery 5 is discharged. Can be protected from overcharging.
【００３４】しかも、最低温度から温度基準値上昇した
時点を満充電とする判定は、バッテリ５の使用可能温度
範囲及び充電開始時のバッテリ５の残存容量に依存せ
ず、常に正確であるため、周囲温度が低い場合や様々な
残存容量からの充電時にも、バッテリ５が過充電となる
ことを防止することができ、バッテリ５の劣化を防ぐこ
とができる。Further, the determination that the battery is fully charged when the temperature rises from the minimum temperature to the temperature reference value is always accurate without depending on the usable temperature range of the battery 5 and the remaining capacity of the battery 5 at the start of charging. Even when the ambient temperature is low or when charging from various remaining capacities, the battery 5 can be prevented from being overcharged, and the battery 5 can be prevented from deteriorating.
【００３５】又、本例では、上記したバッテリ５の温度
上昇による満充電の検出方法に加えて、従来通りの充電
経過時間による満充電の検出方法も行っているため、温
度上昇による満充電の検出がうまく行かない場合にも、
充電経過時間による満充電の検出による充電停止が行わ
れるため、バッテリ５が過充電となることを確実に防止
することができる。In the present embodiment, in addition to the above-described method of detecting full charge due to the rise in temperature of the battery 5, a conventional method of detecting full charge based on the elapsed time of charge is also performed. If the detection doesn't work,
Since the charging is stopped by detecting the full charge based on the elapsed charging time, it is possible to reliably prevent the battery 5 from being overcharged.
【００３６】更に、バッテリ５の温度が所定温度よりも
高い場合は充電を開始しないため、高温のバッテリ５へ
充電してバッテリ５を劣化させることを防止することが
できる。Further, when the temperature of the battery 5 is higher than the predetermined temperature, the charging is not started. Therefore, it is possible to prevent the high temperature battery 5 from being charged and deteriorated.
【００３７】又、上記実施の形態では、バッテリ５とし
てニッカドバッテリを用いたが、同様の特性（図３）を
有するバッテリであれば、ニッカドバッテリに限ること
はない。In the above embodiment, a nickel cadmium battery is used as the battery 5. However, any battery having similar characteristics (FIG. 3) is not limited to a nickel cadmium battery.
【００３８】図４は、本発明の充電制御装置の第２の実
施の形態を示したブロック図である。但し、図１に示し
た第１の実施の形態と同様の部分は同一符号を付し、且
つ適宜その説明を省略する。本例は、温度制御及び時間
制御の他に、電圧検出器６で検出したバッテリ５の電圧
を−ΔＶ制御部１０により監視し、バッテリ５の電圧に
よる満充電の検出も行っているところが、上記した第１
の実施の形態と異なるところである。他の構成は第１の
実施の形態と同様である。FIG. 4 is a block diagram showing a second embodiment of the charge control device of the present invention. However, the same parts as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and the description thereof will be appropriately omitted. In this example, in addition to the temperature control and the time control, the voltage of the battery 5 detected by the voltage detector 6 is monitored by the −ΔV control unit 10 to detect the full charge by the voltage of the battery 5. The first
It is different from the embodiment of FIG. Other configurations are the same as those of the first embodiment.
【００３９】次に本実施の形態の充電制御装置により実
現される充電制御方法について図５のフローチャートを
参照して説明する。本例は充電制御として、温度制御、
時間制御の他に−ΔＶ制御が加わっている。従って、ス
テップＳ３１〜Ｓ４２までは、図２に示した対応する処
理と同様である。Next, a charge control method realized by the charge control device of the present embodiment will be described with reference to the flowchart of FIG. In this example, temperature control,
In addition to the time control, -ΔV control is added. Therefore, steps S31 to S42 are the same as the corresponding processes shown in FIG.
【００４０】本例は、ステップＳ４１で、バッテリ５の
現在の検出温度が最低温度＋Ｔα（温度基準値）より低
い時、或いはステップＳ４２で、現在の検出温度を最低
温度とする更新が行われた時、ステップＳ４３に進ん
で、−ΔＶ制御に移行する。即ち、−ΔＶ制御部１０
は、ステップＳ４３で、電圧検出器６でバッテリ５の電
圧Ｖｂａｔを検出し、この検出電圧Ｖｂａｔが今までの
バッテリ５の電圧のピーク電圧Ｖｍａｘより大きいかど
うかを判定し、そうである場合はステップＳ４６に進ん
で、検出電圧Ｖｂａｔをバッテリ５のピーク電圧Ｖｍａ
ｘにして、ステップＳ４６に進み、そうでない場合は、
直ちにステップＳ４６に進む。In this example, when the current detected temperature of the battery 5 is lower than the minimum temperature + Tα (temperature reference value) in step S41, or in step S42, the current detected temperature is updated to the minimum temperature. At this time, the process proceeds to step S43 and shifts to -ΔV control. That is, the −ΔV control unit 10
In step S43, the voltage detector 6 detects the voltage Vbat of the battery 5 and determines whether the detected voltage Vbat is higher than the peak voltage Vmax of the voltage of the battery 5 up to now. Proceeding to S46, the detection voltage Vbat is changed to the peak voltage Vma of the battery 5.
x, proceed to step S46, otherwise,
The process immediately proceeds to step S46.
【００４１】−ΔＶ制御部１０はステップＳ４６で、Ｖ
ｍａｘとＶｂａｔの差電圧ΔＶ（0.5Ｖ/ｃｅｌｌ）を求
め、ステップＳ４７で、差電圧ΔＶが所定電圧（電圧基
準値）Ｖαを超えたかどうかを判定し、超えた場合、ス
テップＳ４９に進み、超えない場合はステップＳ４８に
進んで、充電経過時間を監視する。その結果、充電時間
が経過していない場合は、ステップＳ３８に戻り、充電
時間が経過した場合は、ステップＳ４９に進む。ステッ
プＳ４９以降の処理は図２に示した対応するトリクル充
電制御と同様である。In step S46, the -.DELTA.V control unit 10
A difference voltage ΔV (0.5 V / cell) between max and Vbat is obtained, and it is determined in step S47 whether the difference voltage ΔV has exceeded a predetermined voltage (voltage reference value) Vα. If not, the process proceeds to step S48, and the elapsed charging time is monitored. As a result, if the charging time has not elapsed, the process returns to step S38, and if the charging time has elapsed, the process proceeds to step S49. The processing after step S49 is the same as the corresponding trickle charge control shown in FIG.
【００４２】本実施の形態によれば、バッテリ５の満充
電を検出するのに、温度制御、時間制御に加えて、−Δ
Ｖ制御を行っているため、即ち、温度制御により満充電
と判定されなくても、−ΔＶ制御により満充電と判定す
ることができ、或いは温度制御、−ΔＶ制御でも満充電
と判定されなかった場合は、タイマ制御により満充電判
定を行う構成により、バッテリ５の満充電をより精度良
く且つ確実に検出することができ、その分、バッテリ５
の過充電によるバッテリ５の劣化を高信頼性で防止する
ことができる。According to the present embodiment, not only temperature control and time control but also -Δ
Since the V control is performed, that is, even if it is not determined that the battery is fully charged by the temperature control, the battery can be determined to be fully charged by the -ΔV control, or the battery is not determined to be fully charged by the temperature control or the -ΔV control. In this case, the configuration in which the full charge determination is performed by the timer control makes it possible to detect the full charge of the battery 5 with higher accuracy and reliability.
Of the battery 5 due to overcharging of the battery can be prevented with high reliability.
【００４３】他の効果は第１の実施の形態と同様で、バ
ッテリ５の満充電の検出がバッテリ５の使用可能温度範
囲や充電開始時のバッテリ５の残存容量に依存せず、常
に正確であるため、周囲温度が低い場合や様々な残存容
量からの充電時にも、バッテリ５が過充電となることを
防止することができる。The other effects are the same as those of the first embodiment, and the detection of the full charge of the battery 5 is always accurate regardless of the usable temperature range of the battery 5 and the remaining capacity of the battery 5 at the start of charging. Therefore, the battery 5 can be prevented from being overcharged even when the ambient temperature is low or when charging from various remaining capacities.
【００４４】[0044]
【発明の効果】以上詳細に説明したように、請求項１又
は２及び９の発明によれば、バッテリ温度を充電中常に
監視し、バッテリの充電開始時の最低温度からの温度上
昇幅が基準値以上に達した時に、バッテリが満充電状態
に達したと判定することにより、周囲温度や直前の放電
容量の大きさに拘らず満充電状態を精度良く検出するこ
とができ、これにより、バッテリが過充電となることを
確実に防止することができる。As described in detail above, according to the first, second and ninth aspects of the present invention, the battery temperature is constantly monitored during charging, and the temperature rise from the lowest temperature at the start of charging of the battery is used as a reference. By determining that the battery has reached the fully charged state when the value reaches or exceeds the value, it is possible to accurately detect the fully charged state regardless of the ambient temperature or the magnitude of the immediately preceding discharge capacity. Can be reliably prevented from being overcharged.
【００４５】請求項３の発明によれば、高温のバッテリ
に充電することが防止されるため、バッテリの劣化を防
止することができる。According to the third aspect of the present invention, since charging of a high-temperature battery is prevented, deterioration of the battery can be prevented.
【００４６】請求項４の発明によれば、バッテリの満充
電を温度制御により判定するだけでなく、タイマ制御に
より判定するため、満充電の判定の信頼性を向上させる
ことができる。According to the fourth aspect of the invention, since the full charge of the battery is determined not only by the temperature control but also by the timer control, the reliability of the determination of the full charge can be improved.
【００４７】請求項５の発明によれば、バッテリの満充
電を温度制御により判定するだけでなく、−ΔＶ制御に
より判定するため、満充電の判定の信頼性を向上させる
ことができる。According to the fifth aspect of the present invention, since the full charge of the battery is determined not only by the temperature control but also by the -ΔV control, the reliability of the determination of the full charge can be improved.
【００４８】請求項６の発明によれば、バッテリの満充
電を温度制御、−ΔＶ制御及びタイマ制御により判定す
るため、満充電の判定の信頼性を更に向上させることが
できる。According to the present invention, since the full charge of the battery is determined by the temperature control, the -ΔV control and the timer control, the reliability of the determination of the full charge can be further improved.
【００４９】請求項７の発明によれば、トリクル充電に
より、充電終了後の自己放電によりバッテリ容量低下を
補償することができる。According to the seventh aspect of the invention, trickle charging can compensate for a decrease in battery capacity due to self-discharge after charging.
【図１】本発明の充電制御装置の第１の実施の形態を示
したブロック図である。FIG. 1 is a block diagram showing a first embodiment of a charge control device of the present invention.
【図２】図１に示した装置によるバッテリ充電制御手順
を示したフローチャートである。FIG. 2 is a flowchart showing a battery charging control procedure performed by the device shown in FIG. 1;
【図３】図１に示した装置により充電するニッカドバッ
テリの充電特性を示した特性図である。FIG. 3 is a characteristic diagram showing charging characteristics of a NiCd battery charged by the device shown in FIG. 1;
【図４】本発明の充電制御装置の第２の実施の形態を示
したブロック図である。FIG. 4 is a block diagram showing a second embodiment of the charge control device of the present invention.
【図５】図４に示した装置によるバッテリ充電制御手順
を示したフローチャートである。FIG. 5 is a flowchart showing a battery charging control procedure by the device shown in FIG. 4;
【図６】従来のバックアップ用ニッカドバッテリを充電
する方法を示したフローチャートである。FIG. 6 is a flowchart showing a conventional method for charging a backup nicd battery.
１ 充電器 ２ 充電出力端子 ３ 電流検出器 ４ 温度センサ ５ バッテリ ６ 電圧検出器 ７ 温度制御部 ８ タイマ制御部 ９ 充電制御部 １０ −ΔＶ制御部 DESCRIPTION OF SYMBOLS 1 Charger 2 Charge output terminal 3 Current detector 4 Temperature sensor 5 Battery 6 Voltage detector 7 Temperature control unit 8 Timer control unit 9 Charge control unit 10 -ΔV control unit
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2G016 CA00 CB12 CC04 CC13 CC27 5G003 AA01 BA01 CA02 CA17 CB01 CB06 CC07 GC05 5H030 AA03 AS03 BB01 BB04 FF22 FF43 FF52 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2G016 CA00 CB12 CC04 CC13 CC27 5G003 AA01 BA01 CA02 CA17 CB01 CB06 CC07 GC05 5H030 AA03 AS03 BB01 BB04 FF22 FF43 FF52
Claims (9)
う充電制御装置において、 前記バッテリの温度を検出する温度検出手段と、 充電中の前記バッテリの温度から最低温度を検出して保
持する最低温度検出手段と、 充電中の前記バッテリの温度と前記最低温度とにより前
記バッテリの前記最低温度からの温度上昇幅を求めて監
視する監視手段と、 前記温度上昇幅と基準値を比較し、前記温度上昇幅が基
準値を超えた場合、前記バッテリが満充電になったと判
定する温度判定手段と、 前記温度判定手段により前記バッテリが満充電になった
と判定されると、前記バッテリへの充電を停止する温度
制御手段と、 を具備することを特徴とする充電制御装置。1. A charge control device for controlling charging of a battery until it is fully charged, comprising: temperature detecting means for detecting a temperature of the battery; and a minimum temperature for detecting and maintaining a minimum temperature from a temperature of the battery during charging. Detecting means; monitoring means for obtaining and monitoring a temperature rise from the lowest temperature of the battery based on the temperature of the battery during charging and the lowest temperature; comparing the temperature rise with a reference value; A temperature determining means for determining that the battery is fully charged when the rise width exceeds a reference value; and stopping charging the battery when the temperature determining means determines that the battery is fully charged. And a temperature control means.
手段によって検出された前記バッテリの温度が既に検出
してメモリに保持してある前記最低温度より低い場合、
今回の検出温度を新たな最低温度とすることにより、前
記バッテリの最低温度を検出することを特徴とする請求
項１記載の充電制御装置。2. The method according to claim 1, wherein the lowest temperature detecting means is configured to determine whether the temperature of the battery detected by the temperature detecting means is lower than the lowest temperature already detected and stored in a memory.
2. The charging control device according to claim 1, wherein the lowest temperature of the battery is detected by setting a current detected temperature as a new lowest temperature.
前記バッテリの温度が所定温度を超えている場合、前記
充電開始直前の温度が所定温度以下になるまで、前記バ
ッテリの充電開始を休止する充電前制御手段を、 設けたことを特徴とする請求項１又は２記載の充電制御
装置。3. When the temperature of the battery detected immediately before the start of charging of the battery is higher than a predetermined temperature, the charging of the battery is suspended until the temperature immediately before the start of charging becomes equal to or lower than the predetermined temperature. The charging control device according to claim 1, further comprising a front control unit.
時するタイマ手段と、 前記タイマ手段による計時時間が所定時間経過した時点
で、前記温度判定手段が前記バッテリの満充電を判定し
ていなくとも、前記バッテリが満充電になったと判定し
て前記バッテリへの充電を停止するタイマ制御手段と、 を設けたことを特徴とする請求項１乃至３いずれかに記
載の充電制御装置。4. A timer means for measuring the time from the start of charging of the battery, and at the time when the time measured by the timer means has passed a predetermined time, the temperature determination means does not determine whether the battery is fully charged. The charging control device according to any one of claims 1 to 3, further comprising: timer control means for determining that the battery is fully charged and stopping charging the battery.
手段と、 前記電圧検出手段から得られる前記充電中のバッテリの
電圧からそのピーク電圧を検出して保持するピーク電圧
検出手段と、 前記ピーク電圧と前記電圧検出手段から得られる前記充
電中のバッテリの電圧を比較し、前記充電中のバッテリ
の電圧が前記ピーク電圧から所定電圧以下に低下した時
点を前記バッテリの満充電と判定する電圧判定手段と、 前記電圧判定手段が前記バッテリの満充電を判定した時
点で、前記温度判定手段が前記バッテリの満充電を判定
していなくとも、前記バッテリが満充電になったと判定
して前記バッテリへの充電を停止する電圧制御手段と、 を設けたことを特徴とする請求項１乃至３いずれかに記
載の充電制御装置。5. A voltage detecting means for detecting a voltage of the battery; a peak voltage detecting means for detecting and holding a peak voltage from a voltage of the battery being charged obtained from the voltage detecting means; And the voltage of the battery being charged obtained from the voltage detecting means is compared with the voltage determining means for determining that the battery is fully charged when the voltage of the battery being charged falls below the predetermined voltage from the peak voltage. At the time when the voltage determining means determines the full charge of the battery, even if the temperature determining means has not determined the full charge of the battery, it is determined that the battery is fully charged, and The charge control device according to any one of claims 1 to 3, further comprising: voltage control means for stopping charging.
手段と、 前記電圧検出手段から得られる前記充電中のバッテリの
電圧からそのピーク電圧を検出して保持するピーク電圧
検出手段と、 前記ピーク電圧と前記電圧検出手段から得られる前記充
電中のバッテリの電圧を比較し、前記充電中のバッテリ
の電圧が前記ピーク電圧から所定電圧以下に低下した時
点を前記バッテリの満充電と判定する電圧判定手段と、 前記電圧判定手段が前記バッテリの満充電を判定した時
点で、前記温度判定手段が前記バッテリの満充電を判定
していなくとも、前記バッテリが満充電になったと判定
して、前記バッテリへの充電を停止する電圧制御手段
と、 前記バッテリの充電開始からの時間を計時するタイマ手
段と、 前記タイマ手段による計時時間が所定時間経過した時点
で、前記温度判定手段又は前記電圧判定手段が前記バッ
テリの満充電を判定していなくとも、前記バッテリが満
充電になったと判定して前記バッテリへの充電を停止す
るタイマ制御手段と、 を設けたことを特徴とする請求項１乃至３いずれかに記
載の充電制御装置。6. A voltage detecting means for detecting a voltage of the battery; a peak voltage detecting means for detecting and holding a peak voltage from a voltage of the battery being charged obtained from the voltage detecting means; And the voltage of the battery being charged obtained from the voltage detecting means is compared with the voltage determining means for determining that the battery is fully charged when the voltage of the battery being charged falls below the predetermined voltage from the peak voltage. At the time when the voltage determining means determines the full charge of the battery, even if the temperature determining means has not determined the full charge of the battery, it is determined that the battery is fully charged, and Voltage control means for stopping the charging of the battery; timer means for measuring the time from the start of charging of the battery; and At the point in time, even if the temperature determination means or the voltage determination means has not determined that the battery is fully charged, timer control means for determining that the battery is fully charged and stopping charging the battery; The charge control device according to any one of claims 1 to 3, further comprising:
バッテリへの充電を停止した後、前記バッテリに微小電
流によるトリクル充電をバッテリの放電要求があるまで
行うことを特徴とする請求項１乃至６いずれかに記載の
充電制御装置。7. A method according to claim 1, further comprising: determining that the battery is fully charged, stopping charging the battery, and then performing trickle charging of the battery with a very small current until a request for discharging the battery is issued. 7. The charging control device according to any one of claims 6 to 6.
テリであることを特徴とする請求項１乃至７いずれかに
記載の充電制御装置。8. The charge control device according to claim 1, wherein the battery is a nickel cadmium battery.
う充電制御方法において、 前記バッテリの温度を検出する温度検出過程と、 充電中の前記バッテリの温度から最低温度を検出して保
持する最低温度検出過程と、 充電中の前記バッテリの温度と前記最低温度とにより前
記バッテリの前記最低温度からの温度上昇幅を求めて監
視する監視過程と、 前記温度上昇幅と基準値を比較し、前記温度上昇幅が基
準値を超えた場合、前記バッテリが満充電になったと判
定する温度判定過程と、 前記温度判定過程により前記バッテリが満充電になった
と判定されると、前記バッテリへの充電を停止する温度
制御過程と、 前記バッテリの充電開始からの時間を計時する計時過程
と、 前記計時過程による計時時間が所定時間経過した時点
で、前記温度判定過程が前記バッテリの満充電を判定し
ていなくとも、前記バッテリが満充電になったと判定し
て、前記バッテリへの充電を停止するタイマ制御過程
と、 を具備することを特徴とする充電制御方法。9. A charging control method for controlling charging of a battery until it is fully charged, comprising: a temperature detecting step of detecting a temperature of the battery; and a minimum temperature detecting and holding a minimum temperature from the temperature of the battery during charging. A detecting step, a monitoring step of obtaining and monitoring a temperature rise from the minimum temperature of the battery based on the temperature of the battery being charged and the minimum temperature, and comparing the temperature rise with a reference value, If the rise width exceeds a reference value, a temperature determining step of determining that the battery is fully charged, and stopping the charging of the battery if the temperature determining step determines that the battery is fully charged. A temperature control step of measuring the time from the start of charging of the battery; and A timer control step of determining that the battery is fully charged and stopping charging the battery even if the process does not determine the full charge of the battery. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28324099A JP2001112185A (en) | 1999-10-04 | 1999-10-04 | Apparatus and method for control of charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28324099A JP2001112185A (en) | 1999-10-04 | 1999-10-04 | Apparatus and method for control of charging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001112185A true JP2001112185A (en) | 2001-04-20 |
Family
ID=17662915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28324099A Pending JP2001112185A (en) | 1999-10-04 | 1999-10-04 | Apparatus and method for control of charging |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001112185A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011132446A1 (en) * | 2010-04-21 | 2011-10-27 | 株式会社マキタ | Device for estimating internal temperature of battery for power tool, and device for power tool |
| JP2012019606A (en) * | 2010-07-08 | 2012-01-26 | Konica Minolta Medical & Graphic Inc | Charging system, charging device, electronic apparatus, and radiation image shooting device |
| JP2015008080A (en) * | 2013-06-25 | 2015-01-15 | 株式会社マキタ | Battery pack |
| WO2017167002A1 (en) * | 2016-03-28 | 2017-10-05 | 中兴通讯股份有限公司 | Method and apparatus for charging lifepo4 battery |
| CN110034347A (en) * | 2018-01-12 | 2019-07-19 | Fdk株式会社 | The charge control method of alkaline storage battery and alkaline storage battery used charger |
-
1999
- 1999-10-04 JP JP28324099A patent/JP2001112185A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011132446A1 (en) * | 2010-04-21 | 2011-10-27 | 株式会社マキタ | Device for estimating internal temperature of battery for power tool, and device for power tool |
| JP2011229317A (en) * | 2010-04-21 | 2011-11-10 | Makita Corp | Internal temperature estimation apparatus for electric tool battery and electric tool device |
| CN102859823A (en) * | 2010-04-21 | 2013-01-02 | 株式会社牧田 | Device for estimating internal temperature of battery for power tool, and device for power tool |
| EP2562894A1 (en) * | 2010-04-21 | 2013-02-27 | Makita Corporation | Device for estimating internal temperature of battery for power tool, and device for power tool |
| EP2562894A4 (en) * | 2010-04-21 | 2014-05-21 | Makita Corp | Device for estimating internal temperature of battery for power tool, and device for power tool |
| US9186787B2 (en) | 2010-04-21 | 2015-11-17 | Makita Corporation | Internal temperature estimation unit for battery for electric power tool, and apparatus for electric power tool |
| JP2012019606A (en) * | 2010-07-08 | 2012-01-26 | Konica Minolta Medical & Graphic Inc | Charging system, charging device, electronic apparatus, and radiation image shooting device |
| JP2015008080A (en) * | 2013-06-25 | 2015-01-15 | 株式会社マキタ | Battery pack |
| WO2017167002A1 (en) * | 2016-03-28 | 2017-10-05 | 中兴通讯股份有限公司 | Method and apparatus for charging lifepo4 battery |
| CN110034347A (en) * | 2018-01-12 | 2019-07-19 | Fdk株式会社 | The charge control method of alkaline storage battery and alkaline storage battery used charger |
| CN110034347B (en) * | 2018-01-12 | 2024-03-12 | Fdk株式会社 | Method for controlling charging of alkaline storage battery and charger for alkaline storage battery |
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