JP2002010514A - Constant current, constant voltage, and constant current charger - Google Patents
Constant current, constant voltage, and constant current chargerInfo
- Publication number
- JP2002010514A JP2002010514A JP2000181774A JP2000181774A JP2002010514A JP 2002010514 A JP2002010514 A JP 2002010514A JP 2000181774 A JP2000181774 A JP 2000181774A JP 2000181774 A JP2000181774 A JP 2000181774A JP 2002010514 A JP2002010514 A JP 2002010514A
- Authority
- JP
- Japan
- Prior art keywords
- charging
- current
- voltage
- constant
- constant current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- 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、定電流充電と定電
流充電とを併用する充電装置に関し、特に、携帯電話機
などの移動通信端末に内蔵される充電装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging device using both constant current charging and constant current charging, and more particularly to a charging device built in a mobile communication terminal such as a portable telephone.
【０００２】[0002]
【従来の技術】携帯電話機などの移動通信端末において
は、電源として二次電池が使用されている。携帯電話機
などにはリチウムイオン二次電池が適しているので、最
近では多く使用されている。携帯電話機を使用する前
に、二次電池を充電する必要がある。二次電池を充電す
る場合には、定格値よりも大きい充電電圧及び充電電流
を二次電池に与えると、二次電池が損傷するおそれがあ
る。二次電池を損傷しないようにするためと、短時間で
充電するために、充電装置は、定電圧回路と定電流回路
を備えている。定格値を超える充電電圧と充電電流が、
二次電池に印加されないようにしている。充電装置は、
定電流回路によって定格値以下の充電電流を二次電池に
供給し、定電圧回路によって、定格値以下の充電電圧を
二次電池に供給する。2. Description of the Related Art In a mobile communication terminal such as a mobile phone, a secondary battery is used as a power source. Lithium-ion secondary batteries are suitable for mobile phones and the like, and are widely used these days. Before using a mobile phone, it is necessary to charge a secondary battery. When charging a secondary battery, if a charging voltage and a charging current higher than the rated values are applied to the secondary battery, the secondary battery may be damaged. The charging device includes a constant voltage circuit and a constant current circuit so as not to damage the secondary battery and to charge the battery in a short time. The charging voltage and charging current exceeding the rated value
The voltage is not applied to the secondary battery. The charging device is
A constant current circuit supplies a charging current of a rated value or less to the secondary battery, and a constant voltage circuit supplies a charging voltage of a rated value or less to the secondary battery.
【０００３】従来のリチウムイオン二次電池の充電方法
を説明する。まず、定格電流で定電流充電を行なう。充
電が進むと電池電圧が上昇して、やがて定格電圧に達す
るので、定電流充電を終了する。続いて、定格電圧で定
電圧充電を行なう。充電電流が徐々に減少して、所定の
電流値になったところで充電を停止する。A method of charging a conventional lithium ion secondary battery will be described. First, constant current charging is performed at the rated current. As the charging proceeds, the battery voltage rises and eventually reaches the rated voltage, so that the constant current charging ends. Subsequently, constant voltage charging is performed at the rated voltage. When the charging current gradually decreases and reaches a predetermined current value, charging is stopped.
【０００４】この充電方法では、定電圧充電における二
次電池への充電電流を検出して、充電完了を検知してい
る。充電電流を検出する方法は、充電電流を微小抵抗で
電圧に変換し、その電圧をアンプで増幅し、Ａ／Ｄ変換
器でデジタル信号に変換して、ＣＰＵで充電電流を判断
する方法である。微小電流を微小抵抗で検出しているた
め、基板配線のインピーダンスの影響を受けて誤差が大
きくなり、アンプの温度特性によってばらつきも発生す
るため、電流測定の分解能は低い。In this charging method, the completion of charging is detected by detecting the charging current to the secondary battery during constant voltage charging. The method of detecting the charging current is a method in which the charging current is converted into a voltage by a minute resistor, the voltage is amplified by an amplifier, converted into a digital signal by an A / D converter, and the CPU determines the charging current. . Since a minute current is detected by a minute resistance, an error is increased due to the influence of the impedance of the substrate wiring, and variations occur due to the temperature characteristics of the amplifier, so that the resolution of the current measurement is low.
【０００５】二次電池の性能がよくなり、より多くの電
力を充電することができるようになったので、充電終止
電流は小さくなっている。過充電を避けて安全に満充電
するためには、微小な充電終止電流を高精度で検出する
必要がある。電流の検出精度を高めるために、アンプの
温度変化を極力小さくするように回路を設計するか、温
度特性テーブルにより測定値を補正して、正しい充電電
流を求める。[0005] As the performance of the secondary battery is improved and more power can be charged, the charge termination current is reduced. In order to avoid overcharging and safely perform full charging, it is necessary to detect a minute charge termination current with high accuracy. In order to improve the current detection accuracy, a circuit is designed to minimize the temperature change of the amplifier, or the measured value is corrected using a temperature characteristic table to obtain a correct charging current.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来の
充電方法では、微小な充電終止電流を正確に検出するた
めに、温度変化の小さいアンプや温度特性テーブルを備
える必要があり、コスト上昇を招くという問題がある。
また、充電終止電流を検出しない充電方法として、一定
時間だけ定電圧充電を行なう方法や、二次電池の温度を
測定する方法があるが、充電時間が長くなり、満充電が
できないという問題がある。However, in the conventional charging method, it is necessary to provide an amplifier having a small temperature change and a temperature characteristic table in order to accurately detect a minute charge termination current, which leads to an increase in cost. There's a problem.
In addition, as a charging method that does not detect the charge termination current, there is a method of performing constant voltage charging for a fixed time or a method of measuring the temperature of a secondary battery. .
【０００７】本発明は、従来の問題を解決して、微小な
充電終止電流を検出する必要を無くして、簡単な回路で
短時間に満充電できる充電装置を提供することを目的と
する。SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems and to provide a charging device which can eliminate the need to detect a minute charge termination current and can be fully charged in a short time with a simple circuit.
【０００８】[0008]
【課題を解決するための手段】上記の課題を解決するた
めに、本発明では、充電装置を、電池電圧を検出する電
圧検出手段と、充電電流を検出する電流検出手段と、第
１充電電流で充電する第１定電流充電手段と、第１充電
電圧で充電する定電圧充電手段と、第２充電電流で充電
する第２定電流充電手段と、充電制御手段とを具備し、
充電制御手段は、携帯電話機が充電器に接続されたこと
を検出して第１定電流充電手段で充電を開始する手段
と、第１定電流充電手段での充電中に電池電圧が第１充
電電圧になったことに応じて第１定電流充電手段での充
電を終了して定電圧充電手段で充電を開始する手段と、
定電圧充電手段での充電中に充電電流が第３充電電流に
なったことに応じて定電圧充電手段での充電を終了して
第２定電流充電手段で充電を開始する手段と、第２定電
流充電手段での充電中に電池電圧が第１充電電圧になっ
たことに応じて充電を停止する手段とを有する構成とし
た。In order to solve the above-mentioned problems, according to the present invention, a charging device includes a voltage detecting means for detecting a battery voltage, a current detecting means for detecting a charging current, and a first charging current. A constant current charging means for charging with a first charging voltage, a second constant current charging means for charging with a second charging current, and charge control means,
The charging control means detects that the mobile phone has been connected to the charger and starts charging by the first constant current charging means. Means for terminating charging by the first constant current charging means and starting charging by the constant voltage charging means in response to the voltage being reached;
Means for terminating charging by the constant voltage charging means and starting charging by the second constant current charging means in response to the charging current becoming the third charging current during charging by the constant voltage charging means; Means for stopping charging when the battery voltage reaches the first charging voltage during charging by the constant current charging means.
【０００９】このように構成したことにより、微小な充
電終止電流を検出することなく、簡単な回路で安全確実
に短時間で満充電できる。[0009] With this configuration, full charge can be performed safely and reliably in a short time with a simple circuit without detecting a minute charge termination current.
【００１０】[0010]
【発明の実施の形態】以下、本発明の実施の形態につい
て、図１〜図３を参照しながら詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.
【００１１】（実施の形態）本発明の実施の形態は、充
電完了電圧まで定電流充電を行ない、さらに充電完了電
圧で定電圧充電を行ない、さらに充電完了電流で定電流
充電を行なう充電装置である。(Embodiment) An embodiment of the present invention relates to a charging apparatus which performs constant current charging up to a charging completion voltage, further performs constant voltage charging at a charging completion voltage, and further performs constant current charging at a charging completion current. is there.
【００１２】図１は、本発明の実施の形態における充電
装置の構成を示す機能ブロック図である。図１におい
て、充電器11は、携帯電話機の外部の装置であり、定電
流回路を有する充電手段である。充電電圧制御回路12
は、定電圧充電の際に、充電電圧を一定に保つ手段であ
る。充電電流検出抵抗13は、充電電流を検出するための
微小抵抗である。ＣＰＵ14は、プログラムにより充電動
作を制御する演算手段である。充電制御回路15は、ＣＰ
Ｕ14の制御の下で充電動作を制御する回路である。携帯
電話本体回路16は、充電制御以外の通話のための回路で
ある。電池17は、リチウムイオン二次電池である。電圧
検出回路18は、電池17の電圧を検出する回路である。定
電流回路19は、充電完了電流値で定電流充電を行なう回
路である。FIG. 1 is a functional block diagram showing a configuration of a charging apparatus according to an embodiment of the present invention. In FIG. 1, a charger 11 is a device external to a mobile phone, and is a charging unit having a constant current circuit. Charge voltage control circuit 12
Is a means for keeping the charging voltage constant during constant voltage charging. The charging current detection resistor 13 is a minute resistor for detecting a charging current. The CPU 14 is an arithmetic unit that controls a charging operation by a program. The charge control circuit 15 includes a CP
This is a circuit for controlling the charging operation under the control of U14. The mobile phone main body circuit 16 is a circuit for a call other than the charge control. Battery 17 is a lithium ion secondary battery. The voltage detection circuit 18 is a circuit that detects the voltage of the battery 17. The constant current circuit 19 is a circuit that performs constant current charging with a charge completion current value.
【００１３】図２は、本発明の実施の形態における充電
装置の動作を示すフローチャートである。図３は、本発
明の実施の形態における充電装置の電池電圧と充電電流
の時系列での変化を示す図である。FIG. 2 is a flowchart showing the operation of the charging apparatus according to the embodiment of the present invention. FIG. 3 is a diagram showing time-series changes in battery voltage and charging current of the charging device according to the embodiment of the present invention.
【００１４】上記のように構成された本発明の実施の形
態における充電装置の動作について図１〜図３を用いて
説明する。この例の図３に示す最初の定電流充電１で
は、定格充電電圧である充電完了電圧Ｖoffになるま
で、定格充電電流Ｉsで充電を行なう。次の定電圧充電
では、充電完了電圧Ｖoffで定電圧充電をする。充電電
流が、（充電完了電流Ｉoff＋検出誤差電流Ｉerror）に
なった時点で、定電圧充電を完了する。最後の定電流充
電２では、充電完了電流Ｉoffで定電流充電を行ない、
充電完了電圧Ｖoffになった時点で充電を完了する。The operation of the charging apparatus according to the embodiment of the present invention configured as described above will be described with reference to FIGS. In the first constant current charging 1 shown in FIG. 3 of this example, the charging is performed with the rated charging current Is until the charging completion voltage Voff, which is the rated charging voltage, is reached. In the next constant voltage charging, constant voltage charging is performed at the charging completion voltage Voff. When the charging current becomes (charging completion current Ioff + detection error current Ierror), the constant voltage charging is completed. In the last constant current charging 2, constant current charging is performed with the charging completion current Ioff.
The charging is completed when the voltage reaches the charging completion voltage Voff.
【００１５】図２のＳＴＥＰ１では、携帯電話機が充電
器11に接続されたことを、充電制御回路15を介してＣＰ
Ｕ14が検知して、充電動作を開始する。ＳＴＥＰ２で
は、ＣＰＵ14の制御の下で充電制御回路15が動作し、充
電電圧制御回路12を導通状態にする。充電器11の定電流
回路によって、定格充電電流Ｉsで定電流充電１を開始
する。In STEP 1 of FIG. 2, the fact that the portable telephone has been connected to the charger 11 is transmitted via the charge control circuit 15 to the CP.
U14 detects and starts the charging operation. In STEP 2, the charge control circuit 15 operates under the control of the CPU 14, and makes the charge voltage control circuit 12 conductive. The constant current charging 1 is started by the constant current circuit of the charger 11 at the rated charging current Is.
【００１６】ＳＴＥＰ３では、充電制御回路15が、電池
電圧検出回路18を介して電池電圧を監視する。電池17の
電圧を、充電完了電圧Ｖoffと比較し、電池17の電圧が
充電完了電圧Ｖoffを超えるまで、定電流充電１を続け
る。電池17の電圧が充電完了電圧Ｖoffを超えたら、Ｓ
ＴＥＰ４に進む。In STEP 3, the charge control circuit 15 monitors the battery voltage via the battery voltage detection circuit 18. The voltage of the battery 17 is compared with the charging completion voltage Voff, and the constant current charging 1 is continued until the voltage of the battery 17 exceeds the charging completion voltage Voff. When the voltage of the battery 17 exceeds the charging completion voltage Voff, S
Proceed to TEP4.
【００１７】ＳＴＥＰ４では、ＣＰＵ14は、充電制御回
路15を介して、充電電圧制御回路12を導通状態から定電
圧状態に切り換えて、定電流充電１を終了する。充電制
御回路15と充電電圧制御回路12によって、充電電圧を一
定電圧の充電完了電圧Ｖoffに制御し、定電圧充電を開
始する。ここまでは、従来の充電方法と同じである。In STEP 4, the CPU 14 switches the charge voltage control circuit 12 from the conductive state to the constant voltage state via the charge control circuit 15, and terminates the constant current charging 1. The charge control circuit 15 and the charge voltage control circuit 12 control the charge voltage to a constant charge completion voltage Voff to start constant voltage charge. Up to this point, it is the same as the conventional charging method.
【００１８】ＳＴＥＰ５では、電池17に充電される電流
を、充電電流検出抵抗13で検出する。ＣＰＵ14は、予め
記憶している充電中断電流値（充電完了電流値Ｉoff＋
誤差電流値Ｉerror）と、検出した電流値とを比較す
る。この誤差電流値Ｉerrorは、充電電流検出回路の誤
差や、Ａ／Ｄ変換器の誤差の総和である。充電中断電流
値は、微小電流ではなく、正確に測定する必要もないの
で、充電中断電流値を測定する回路は簡単な測定回路で
十分である。充電電流が充電中断電流値（Ｉoff＋Ｉerr
or）より小さくなったら、ＳＴＥＰ６に進む。なお、充
電電流が充電中断電流値になったことを検出するのは、
ハードウエアの検出手段でもよい。In STEP 5, the current charged in the battery 17 is detected by the charging current detecting resistor 13. The CPU 14 controls the charge interruption current value (charge completion current value Ioff +
The error current value Ierror) is compared with the detected current value. The error current value Ierror is the sum of errors in the charging current detection circuit and errors in the A / D converter. Since the charge interruption current value is not a very small current and does not need to be measured accurately, a simple measurement circuit is sufficient as a circuit for measuring the charge interruption current value. The charging current is the charging interruption current value (Ioff + Ierr
or) If it becomes smaller, go to STEP6. It is to be noted that the detection that the charging current has reached the charging interruption current value is as follows.
Hardware detection means may be used.
【００１９】ＳＴＥＰ６では、ＣＰＵ14は、充電電圧制
御回路12を非導通にして、定電圧充電を終了する。その
後、定電流回路19を起動して、定電流充電２を開始す
る。電池17は、充電完了電流Ｉoffで定電流充電され
る。定電流回路19は、微小な充電完了電流Ｉoffを正確
に出力する定電流回路であるが、比較的簡単な回路で実
現可能である。ＳＴＥＰ７では、ＣＰＵ14は、電池電圧
検出回路18と充電制御回路15により電池電圧を得て、充
電完了電圧Ｖoffと比較する。この回路は、定電流充電
１と同じ回路が使えるので、回路構成は簡単になる。電
池電圧が充電完了電圧Ｖoffを超えるまで、定電流充電
２を継続する。電池電圧が充電完了電圧Ｖoffを超える
と、ＳＴＥＰ８に進む。ＳＴＥＰ８では、定電流回路19
を停止させて、充電動作を完了させる。In STEP 6, the CPU 14 turns off the charging voltage control circuit 12 and terminates the constant voltage charging. Thereafter, the constant current circuit 19 is activated, and constant current charging 2 is started. The battery 17 is charged at a constant current with the charge completion current Ioff. The constant current circuit 19 is a constant current circuit that accurately outputs a small charge completion current Ioff, but can be realized by a relatively simple circuit. In STEP 7, the CPU 14 obtains the battery voltage by the battery voltage detection circuit 18 and the charge control circuit 15, and compares the battery voltage with the charge completion voltage Voff. Since this circuit can use the same circuit as the constant current charging 1, the circuit configuration is simplified. The constant current charging 2 is continued until the battery voltage exceeds the charging completion voltage Voff. When the battery voltage exceeds the charging completion voltage Voff, the process proceeds to STEP8. In STEP 8, the constant current circuit 19
Is stopped to complete the charging operation.
【００２０】上記のように、本発明の実施の形態では、
充電装置を、充電完了電圧まで定電流充電を行ない、さ
らに充電完了電圧で定電圧充電を行ない、さらに充電完
了電流で定電流充電を行なう構成としたので、簡単な回
路で安全確実に満充電できる。As described above, in the embodiment of the present invention,
The charging device is configured to perform constant current charging up to the charging completion voltage, perform constant voltage charging at the charging completion voltage, and perform constant current charging at the charging completion current. .
【００２１】[0021]
【発明の効果】以上の説明から明らかなように、本発明
では、充電装置を、電池電圧を検出する電圧検出手段
と、充電電流を検出する電流検出手段と、第１充電電流
で充電する第１定電流充電手段と、第１充電電圧で充電
する定電圧充電手段と、第２充電電流で充電する第２定
電流充電手段と、充電制御手段とを具備し、充電制御手
段は、携帯電話機が充電器に接続されたことを検出して
第１定電流充電手段で充電を開始する手段と、第１定電
流充電手段での充電中に電池電圧が第１充電電圧になっ
たことに応じて第１定電流充電手段での充電を終了して
定電圧充電手段で充電を開始する手段と、定電圧充電手
段での充電中に充電電流が第３充電電流になったことに
応じて定電圧充電手段での充電を終了して第２定電流充
電手段で充電を開始する手段と、第２定電流充電手段で
の充電中に電池電圧が第１充電電圧になったことに応じ
て充電を停止する手段とを有する構成としたので、微小
な充電終止電流を検出することなく、簡単な回路で短時
間に満充電できるという効果が得られる。As is apparent from the above description, according to the present invention, the battery charger is charged by the voltage detecting means for detecting the battery voltage, the current detecting means for detecting the charging current, and the first charging current. A constant current charging means, a constant voltage charging means for charging with a first charging voltage, a second constant current charging means for charging with a second charging current, and a charge control means, wherein the charge control means is a mobile phone Means for detecting that the battery has been connected to the charger and starting charging with the first constant current charging means, and responding to the fact that the battery voltage has reached the first charging voltage during charging with the first constant current charging means. Means for terminating the charging by the first constant current charging means and starting charging by the constant voltage charging means, and determining whether the charging current becomes the third charging current during charging by the constant voltage charging means. End charging by voltage charging means and start charging by second constant current charging means And a means for stopping charging when the battery voltage reaches the first charging voltage during charging by the second constant current charging means, so that a minute charging termination current is detected. The effect of being able to fully charge in a short time with a simple circuit is obtained.
【図１】本発明の実施の形態における充電装置の機能ブ
ロック図、FIG. 1 is a functional block diagram of a charging device according to an embodiment of the present invention;
【図２】本発明の実施の形態における充電装置の動作を
示すフローチャート、FIG. 2 is a flowchart showing the operation of the charging device according to the embodiment of the present invention;
【図３】本発明の実施の形態における充電装置の電池電
圧と充電電流と時間の関係を示す図である。FIG. 3 is a diagram showing a relationship between a battery voltage, a charging current, and time of the charging device according to the embodiment of the present invention.
11 充電器 12 充電電圧制御回路 13 充電電流検出抵抗 14 ＣＰＵ 15 充電制御回路 16 携帯電話本体回路 17 電池 18 電池電圧検出回路 19 充電完了電流値の定電流回路 11 Charger 12 Charge voltage control circuit 13 Charge current detection resistor 14 CPU 15 Charge control circuit 16 Mobile phone body circuit 17 Battery 18 Battery voltage detection circuit 19 Constant current circuit of charge completion current value
Claims (3)
圧検出手段と、充電電流を検出する電流検出手段と、第
１充電電流で定電流充電する第１定電流充電手段と、第
１充電電圧で定電圧充電する定電圧充電手段と、第２充
電電流で定電流充電する第２定電流充電手段と、充電制
御手段とを具備し、前記充電制御手段は、携帯電話機が
充電器に接続されたことを検出して前記第１定電流充電
手段で充電を開始する手段と、前記第１定電流充電手段
での充電中に電池電圧が前記第１充電電圧になったこと
に応じて前記第１定電流充電手段での充電を終了して前
記定電圧充電手段で充電を開始する手段と、前記定電圧
充電手段での充電中に充電電流が第３充電電流になった
ことに応じて前記定電圧充電手段での充電を終了して前
記第２定電流充電手段で充電を開始する手段と、前記第
２定電流充電手段での充電中に電池電圧が前記第１充電
電圧になったことに応じて充電を停止する手段とを有す
ることを特徴とする充電装置。1. A voltage detecting means for detecting a voltage of a secondary battery to be charged, a current detecting means for detecting a charging current, a first constant current charging means for performing a constant current charging with a first charging current, and a first constant current charging means. Constant voltage charging means for performing constant voltage charging with a charging voltage; second constant current charging means for performing constant current charging with a second charging current; and charging control means. Means for detecting connection and starting charging by the first constant current charging means; and responding to the fact that the battery voltage has reached the first charging voltage during charging by the first constant current charging means. Means for terminating the charging by the first constant current charging means and starting charging by the constant voltage charging means, and responding to the fact that the charging current has become the third charging current during the charging by the constant voltage charging means. To terminate the charging by the constant voltage charging means and Charging means for initiating charging at a stage and means for stopping charging in response to the battery voltage reaching the first charging voltage during charging by the second constant current charging means. apparatus.
であり、前記第１充電電流は前記リチウムイオン二次電
池の定格充電電流であり、前記第１充電電圧は、前記リ
チウムイオン二次電池の定格充電電圧であり、前記第２
充電電流は、前記リチウムイオン二次電池の充電完了電
流値であり、前記第３充電電流は前記第２充電電流と装
置誤差に起因する誤差電流の最大値との和であることを
特徴とする請求項１記載の充電装置。2. The secondary battery is a lithium ion secondary battery, the first charging current is a rated charging current of the lithium ion secondary battery, and the first charging voltage is a lithium ion secondary battery. And the rated charging voltage of the second
The charging current is a charging completion current value of the lithium ion secondary battery, and the third charging current is a sum of the second charging current and a maximum value of an error current caused by a device error. The charging device according to claim 1.
検出して最大許容充電電流で定電流充電を開始し、電池
電圧が最大許容充電電圧になったことを検出すると定電
流充電を終了し、前記最大許容充電電圧で定電圧充電を
開始し、充電電流が、充電完了電流値と誤差電流値との
和の値になったことを検出すると、定電圧充電を終了
し、前記充電完了電流値で定電流充電を開始し、電池電
圧が前記最大許容充電電圧になったことを検出すると定
電流充電を停止することを特徴とするリチウムイオン二
次電池の充電方法。3. A constant current charge is started at the maximum allowable charging current by detecting that the mobile phone is connected to the charger, and the constant current charging is terminated when the battery voltage is detected to be the maximum allowable charging voltage. The constant voltage charging is started at the maximum allowable charging voltage, and when it is detected that the charging current has reached the sum of the charging completion current value and the error current value, the constant voltage charging is terminated and the charging completion is completed. A method of charging a lithium ion secondary battery, comprising: starting constant current charging at a current value; and stopping constant current charging when detecting that the battery voltage has reached the maximum allowable charging voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000181774A JP2002010514A (en) | 2000-06-16 | 2000-06-16 | Constant current, constant voltage, and constant current charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000181774A JP2002010514A (en) | 2000-06-16 | 2000-06-16 | Constant current, constant voltage, and constant current charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002010514A true JP2002010514A (en) | 2002-01-11 |
Family
ID=18682649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000181774A Pending JP2002010514A (en) | 2000-06-16 | 2000-06-16 | Constant current, constant voltage, and constant current charger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002010514A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101282047B (en) * | 2007-03-22 | 2011-11-09 | 兄弟工业株式会社 | Mobile phone apparatus |
| CN102832681A (en) * | 2011-06-13 | 2012-12-19 | 苏州能健电气有限公司 | Lithium battery pack charger of wind power pitch system |
| JP2021506205A (en) * | 2018-05-31 | 2021-02-18 | オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． | Charging method and charging device |
| JP2021112112A (en) * | 2020-01-14 | 2021-08-02 | 北京小米移動軟件有限公司Beijing Xiaomi Mobile Software Co., Ltd. | Charging method and device, electronic device, and storage medium |
-
2000
- 2000-06-16 JP JP2000181774A patent/JP2002010514A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101282047B (en) * | 2007-03-22 | 2011-11-09 | 兄弟工业株式会社 | Mobile phone apparatus |
| CN102832681A (en) * | 2011-06-13 | 2012-12-19 | 苏州能健电气有限公司 | Lithium battery pack charger of wind power pitch system |
| JP2021506205A (en) * | 2018-05-31 | 2021-02-18 | オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． | Charging method and charging device |
| JP7185692B2 (en) | 2018-05-31 | 2022-12-07 | オッポ広東移動通信有限公司 | Charging method and charging device |
| US11539229B2 (en) | 2018-05-31 | 2022-12-27 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Multi-stage constant current charging method and charging apparatus |
| JP2021112112A (en) * | 2020-01-14 | 2021-08-02 | 北京小米移動軟件有限公司Beijing Xiaomi Mobile Software Co., Ltd. | Charging method and device, electronic device, and storage medium |
| JP6998992B2 (en) | 2020-01-14 | 2022-01-18 | 北京小米移動軟件有限公司 | Charging methods and devices, electronic devices, storage media |
| US11398744B2 (en) | 2020-01-14 | 2022-07-26 | Beijing Xiaomi Mobile Software Co., Ltd. | Charging method and device, electronic device and storage medium |
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