JP2011205839A - Charger and battery pack - Google Patents

Charger and battery pack Download PDF

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JP2011205839A
JP2011205839A JP2010072553A JP2010072553A JP2011205839A JP 2011205839 A JP2011205839 A JP 2011205839A JP 2010072553 A JP2010072553 A JP 2010072553A JP 2010072553 A JP2010072553 A JP 2010072553A JP 2011205839 A JP2011205839 A JP 2011205839A
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charging
battery
charger
battery pack
secondary battery
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Toshiyuki Suzuki
利幸 鈴木
Shinji Watabe
伸二 渡部
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Koki Holdings Co Ltd
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Hitachi Koki Co Ltd
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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

Abstract

PROBLEM TO BE SOLVED: To provide a charger which can charge a battery pack up to a nominal value while preventing the deterioration of a secondary battery.SOLUTION: A charger can charge the battery pack including the secondary battery by at least one charging system, and includes an information part, an acquisition part, and a controller. The informational part notifies the battery pack of the charging system. The acquisition part obtains the charging conditions of the secondary battery corresponding to the charging system from the battery pack following the notification given by the informational part. The controller charges the secondary battery on the basis of the charging conditions.

Description

本発明は、二次電池の劣化を適切に防止することのできる電池パック及び充電器に関する。   The present invention relates to a battery pack and a charger that can appropriately prevent deterioration of a secondary battery.

従来、充電器は、電池パックを充電するとき、電池パックに内蔵された識別抵抗の抵抗値を読み取って電池セルの定格電圧を取得し、この定格電圧に応じた充電器規定のプロトコルによる充電電流及び充電電圧のリミット値、並びに終止電流値等で電池パックを充電する製品が知られていた。   Conventionally, when charging a battery pack, the charger reads the resistance value of the identification resistor built in the battery pack to obtain the rated voltage of the battery cell, and the charging current according to the charger-defined protocol corresponding to this rated voltage. In addition, a product that charges a battery pack with a limit value of charging voltage and a termination current value has been known.

しかしながら、従来の充電器では、電池セルの定格電圧に合わせて一律な充電電圧、充電電流及び終止電流等で電池パックを充電している。このため、電池セルの充電電圧及び充電電流のリミット値や終止電流値等の充電仕様が、メーカやその型式の差異により充電器規定のプロトコルと一致しない場合は、実際に電池パックに充電された容量が公称値よりも少なかったり、或いは、電池パックの充放電寿命が短くなる等の問題が生じていた。   However, in the conventional charger, the battery pack is charged with a uniform charging voltage, charging current, termination current and the like according to the rated voltage of the battery cell. For this reason, if the charging specifications such as the charging voltage and charging current limit value and termination current value of the battery cell do not match the protocol specified by the charger due to differences in manufacturer and model, the battery pack was actually charged. There has been a problem that the capacity is less than the nominal value or the charge / discharge life of the battery pack is shortened.

本発明は、斯かる実情に鑑み、電池パックを構成する電池セルの電池特性に適した充電を可能にする充電器及び電池パックを提供しようとするものである。   In view of such circumstances, the present invention intends to provide a charger and a battery pack that enable charging suitable for the battery characteristics of the battery cells constituting the battery pack.

請求項１記載の充電器は、二次電池を有する電池パックを少なくとも１つの充電方式で充電可能な充電器であって、前記充電方式を前記電池パックに通知する通知部と、前記通知部による通知に応じた前記電池パックから、前記充電方式に応じた前記二次電池の充電条件を取得する取得部と、前記充電条件に基づいて前記二次電池を充電する制御部と、を有することを特徴とする。   The charger according to claim 1 is a charger capable of charging a battery pack having a secondary battery by at least one charging method, the notification unit notifying the battery pack of the charging method, and the notification unit An acquisition unit that acquires the charging condition of the secondary battery according to the charging method from the battery pack according to the notification, and a control unit that charges the secondary battery based on the charging condition. Features.

上記構成により、充電器は、電池パックを充電するとき、最初に充電方式を電池パックに通知する。電池パックは、取得した充電方式に応じて、例えば二次電池の種類、定格電圧及び充電容量のみならず、メーカ、型式、電池パックの充放電回数等の条件をも考慮して、充電電圧及び充電電流のリミット値、並びに終止電流値等などの充電条件を設定して充電器に通知する。充電器は、電池パックから通知された充電条件に基づき二次電池を充電する。従って、電池パックを公称容量にまで適切に充電できるとともに、二次電池の劣化を防止することができる。   With the above configuration, when charging the battery pack, the charger first notifies the battery pack of the charging method. Depending on the acquired charging method, the battery pack takes into account not only the type of secondary battery, rated voltage, and charging capacity, but also the conditions such as manufacturer, model, number of times of charging and discharging the battery pack, The charging conditions such as the charging current limit value and the termination current value are set and notified to the charger. The charger charges the secondary battery based on the charging condition notified from the battery pack. Therefore, the battery pack can be appropriately charged to the nominal capacity, and the secondary battery can be prevented from deteriorating.

請求項２記載の充電器は、二次電池を有する電池パックを少なくとも１つの充電方式で充電可能な充電器であって、前記充電方式を前記電池パックに通知する通知部と、前記通知部による通知に応じた前記電池パックから、前記充電方式に対応した前記二次電池の電池特性を取得する取得部と、前記電池特性に基づいて前記二次電池の充電条件を設定する設定部と、前記充電条件に基づいて前記二次電池を充電する制御部と、を有することを特徴とする。   The charger according to claim 2 is a charger capable of charging a battery pack having a secondary battery by at least one charging method, the notification unit notifying the battery pack of the charging method, and the notification unit An acquisition unit that acquires battery characteristics of the secondary battery corresponding to the charging method from the battery pack according to the notification, a setting unit that sets charging conditions for the secondary battery based on the battery characteristics, and And a control unit that charges the secondary battery based on a charging condition.

上記構成により、充電器は、電池パックを充電するとき、最初に充電方式を電池パックに通知する。電池パックは、取得した充電方式に応じて、例えばメーカ、型式及び電池パックの充放電回数等の少なくとも１の情報と、さらに二次電池の種類と、定格電圧と、充電容量等とからなる電池特性を充電器に通知する。充電器は、電池パックから通知された電池特性を考慮して、充電電圧及び充電電流のリミット値、並びに終止電流値等の充電条件を設定し、この充電条件に基づき二次電池の充電を開始する。従って、電池パックを公称値にまで適切に充電できるとともに、二次電池の劣化を防止することができる。   With the above configuration, when charging the battery pack, the charger first notifies the battery pack of the charging method. The battery pack is a battery comprising, for example, at least one information such as manufacturer, model, number of times of charging / discharging of the battery pack, the type of the secondary battery, the rated voltage, the charging capacity, etc. according to the acquired charging method. Notify the charger of the characteristics. The charger sets the charging conditions such as the charging voltage and charging current limit values and the termination current value in consideration of the battery characteristics notified from the battery pack, and starts charging the secondary battery based on the charging conditions. To do. Therefore, the battery pack can be appropriately charged to the nominal value, and the secondary battery can be prevented from being deteriorated.

請求項３記載の電池パックは、充電器によって少なくとも１つの充電方式で充電される電池パックであって、二次電池と、前記充電方式に関する情報を取得する取得部と、取得された情報と前記二次電池の電池特性とに基づいて充電条件を設定する設定部と、前記充電条件を前記充電器に通知する通知部と、前記充電条件に基づいた前記二次電池の充電を制御する制御部と、を有することを特徴とする。   The battery pack according to claim 3 is a battery pack that is charged by a charger in at least one charging method, a secondary battery, an acquisition unit that acquires information on the charging method, the acquired information, and the A setting unit that sets a charging condition based on battery characteristics of a secondary battery, a notification unit that notifies the charger of the charging condition, and a control unit that controls charging of the secondary battery based on the charging condition It is characterized by having.

上記構成により、電池パックは、充電器により充電されるとき、充電器より取得した充電方式と、例えば、二次電池の定格電圧、種類、メーカ、型式、充電容量及び充電回数などの電池特性を考慮して、充電電圧及び充電電流のリミット値、並びに終止電流値等を充電条件として設定する。そして、このようにして設定された充電条件を充電器に通知し、この充電条件で充電器による電池パックの充電を行う。充電電圧及び充電電流のリミット値、並びに終止電流値などの充電条件を、二次電池の種類、メーカ、又は型式に対応して設定できるので、電池パックは、公称値にまで適切に充電されると共に、二次電池の劣化を防止することができる。   With the above configuration, when the battery pack is charged by the charger, the charging method acquired from the charger and the battery characteristics such as the rated voltage, type, manufacturer, model, charging capacity, and number of times of charging of the secondary battery are displayed. In consideration, the charging voltage and charging current limit values, the termination current value, and the like are set as charging conditions. Then, the charging condition set in this way is notified to the charger, and the battery pack is charged by the charger under this charging condition. Charging conditions such as charging voltage and charging current limit values and termination current values can be set according to the type, manufacturer, or model of the secondary battery, so the battery pack is charged appropriately to the nominal value. At the same time, the secondary battery can be prevented from deteriorating.

請求項４記載の電池パックは、充電器によって少なくとも１つの充電方式で充電される電池パックであって、二次電池と、前記充電方式に関する情報を取得する取得部と、取得された情報に基づいた前記二次電池の電池特性を前記充電器に通知する通知部と、前記通知部による通知の後に開始される前記二次電池の充電を制御する制御部と、を有することを特徴とする。   The battery pack according to claim 4 is a battery pack charged by at least one charging method by a charger, and is based on a secondary battery, an acquisition unit that acquires information on the charging method, and the acquired information. And a notification unit that notifies the charger of battery characteristics of the secondary battery, and a control unit that controls charging of the secondary battery that is started after notification by the notification unit.

上記構成により、電池パックは、充電器により充電されるとき、充電器より取得した充電方式に関する情報に対応して、例えば、二次電池の種類、定格電圧、メーカ、型式、充電容量及び充電回数などの電池特性を充電器に通知する。充電器は、通知された電池特性に基づき、充電電圧及び充電電流のリミット値、並びに終止電流値等の充電条件を設定する。そして、電池パックの二次電池は、このようにして設定された充電条件の下で、充電器によって充電される。従って、電池パックは、公称値にまで適切に充電されると共に、二次電池の劣化を防止することができる。   With the above configuration, when the battery pack is charged by the charger, for example, the type, the rated voltage, the manufacturer, the model, the charging capacity, and the number of times of charging of the secondary battery correspond to the information about the charging method acquired from the charger. Notify the battery characteristics such as Based on the notified battery characteristics, the charger sets charging conditions such as a charging voltage and charging current limit value, and a termination current value. The secondary battery of the battery pack is charged by the charger under the charging conditions set in this way. Therefore, the battery pack can be appropriately charged to the nominal value, and the deterioration of the secondary battery can be prevented.

本発明によれば、電池パックを公称値まで充電することができる。また、電池パックの二次電池の劣化を防止することが可能となる。   According to the present invention, the battery pack can be charged to the nominal value. In addition, it is possible to prevent the secondary battery of the battery pack from being deteriorated.

本発明の実施の形態に係る充電器及び電池パックの構成図である。It is a block diagram of the charger and battery pack which concern on embodiment of this invention. 電池側メモリ又は充電器側メモリに記憶される情報を説明する図である。It is a figure explaining the information memorized by battery side memory or charger side memory. 充電器による電池パックの充電を説明するフローチャートである。It is a flowchart explaining charge of the battery pack by a charger. 充電器による電池パックの充電の例を示す図である。It is a figure which shows the example of charge of the battery pack by a charger.

以下、本発明による実施の形態を添付図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１に、電池パック１０と、電池パック１０を充電する充電器２０とを示す。   FIG. 1 shows a battery pack 10 and a charger 20 that charges the battery pack 10.

電池パック１０は、電池ケース１１に、電池セル１２と、電池側マイコン１３と、電池側メモリ１４と、通信部１５とを有する。電池セル１２は、二次電池として、ニッケル水素電池、ニッカド電池、リチウムイオン電池等などからなり、電池セル１２の複数が直列又は並列に接続されてなる場合もある。電池セル１２は、充電器２０によって充電可能である。電池側マイコン１３は、取得部、設定部及び制御部として、電池セル１２の電池電圧、充電電流をモニタし、電池セル１２と充電器２０との間に形成される電流路の開閉を制御する。電池側メモリ１４は、電池セル１２の種類、定格電圧、配列、メーカ、又は型式等からなる電池情報と、電池情報に対応して設定された複数のプロトコルと、電池パック１０の充電回数等の来歴を記憶している。また、電池側メモリ１４は、電池セル１２の充電方式に応じて選択可能な複数個のプロトコルを記憶する。通信部１５は、通知部として、充電器２０と双方向に通信可能である。   The battery pack 10 includes a battery case 11, a battery cell 12, a battery-side microcomputer 13, a battery-side memory 14, and a communication unit 15. The battery cell 12 is composed of a nickel metal hydride battery, a nickel cadmium battery, a lithium ion battery, or the like as a secondary battery, and a plurality of battery cells 12 may be connected in series or in parallel. The battery cell 12 can be charged by the charger 20. The battery-side microcomputer 13 serves as an acquisition unit, a setting unit, and a control unit to monitor the battery voltage and charging current of the battery cell 12 and to control the opening and closing of a current path formed between the battery cell 12 and the charger 20. . The battery-side memory 14 includes battery information including the type, rated voltage, arrangement, manufacturer, or model of the battery cell 12, a plurality of protocols set according to the battery information, and the number of times the battery pack 10 is charged. I remember my history. The battery-side memory 14 stores a plurality of protocols that can be selected according to the charging method of the battery cell 12. The communication unit 15 can communicate bidirectionally with the charger 20 as a notification unit.

充電器２０は、本体２１に、充電器側マイコン２２と、充電器側メモリ２３と、電池パック１０の通信部１５と双方向で通信可能な通信部２４とを有する。充電器側マイコン２２は、取得部、設定部及び制御部として、本体２１に接続される電池パック１０の充電を制御する。充電器側メモリ２３は、少なくとも１つの充電方式情報を記憶する。記憶される充電方式情報は、例えば充電器２０から電池セル１２に給電可能な電流量に応じて、高速充電（タイプＡ）、中速充電（タイプＢ）、低速充電（タイプＣ）の３種類の充電方式のうちの少なくとも１つである。高速充電（タイプＡ）は、３種類の充電方式の中で、電池セル１２に流す電流量が最も多く、満充電になるまでの所要時間が最も短いタイプの充電方式である。中速充電（タイプＢ）は、電池セル１２に流す電流量が高速充電の次に多く、満充電になるまでの所要時間が高速充電の次に短いタイプの充電方式である。低速充電（タイプＣ）は、電池セル１２に流す電流量が最も少なく、満充電になるまでの所要時間が最も長いタイプの充電方式である。なお、通信部２４は、通知部に対応する。   The charger 20 includes a main body 21 including a charger-side microcomputer 22, a charger-side memory 23, and a communication unit 24 that can bidirectionally communicate with the communication unit 15 of the battery pack 10. The charger side microcomputer 22 controls charging of the battery pack 10 connected to the main body 21 as an acquisition unit, a setting unit, and a control unit. The charger-side memory 23 stores at least one charging method information. The stored charging method information includes, for example, three types of fast charging (type A), medium speed charging (type B), and low speed charging (type C) depending on the amount of current that can be supplied from the charger 20 to the battery cell 12. At least one of the charging methods. High-speed charging (type A) is a charging method of a type in which the amount of current flowing through the battery cell 12 is the largest among the three types of charging methods and the time required for full charging is the shortest. Medium-speed charging (type B) is a type of charging method in which the amount of current flowing through the battery cell 12 is the second largest after fast charging, and the time required for full charging is shortest next to fast charging. Low-speed charging (type C) is a charging method of the type that requires the least amount of current to flow through the battery cell 12 and takes the longest time to full charge. The communication unit 24 corresponds to a notification unit.

次に、電池側メモリ１４に記憶される情報の詳細について、図２を参照して説明する。電池側メモリ１４には、識別コードＩと、充電方式別の充電条件IIと、その他の電池情報IIIとが記録されている。識別コードＩは、ニッケル水素電池、ニッカド電池、リチウムイオン電池等の電池セル１２の種類、定格電圧、メーカ、配列、及び型式等を表す情報である。充電方式別の充電条件IIは、高速充電（タイプＡ）、中速充電（タイプＢ）、低速充電（タイプＣ）の３種類の充電方式毎に、電池セル１２の充電に使用される充電条件を具体的に特定するものである。例えば、充電電圧及び充電電流のリミット値、終止電流値、充電電圧の２回微分値：Δ２Ｖ値、充電中の温度勾配：−Δｔを１つのプロトコルとして、充電方式別に複数のプロトコルが充電条件として用意されている。終止電流値は、電池側マイコン１３が、かかる値にまで電池セル１２を流れる電流値が低下したときに、電池セル１２が満充電に達したと判断するときの電流値である。Δ２Ｖ値及び−Δｔも、電池セル１２の種類に応じて電池セル１２の満充電を判断する際に使用されるパラメータである。その他の電池情報IIIは、これまでの電池パック１０の充電に使われた充電条件の来歴や充電回数等の電池状態を表す情報である。   Next, details of the information stored in the battery-side memory 14 will be described with reference to FIG. The battery side memory 14 stores an identification code I, a charging condition II for each charging method, and other battery information III. The identification code I is information indicating the type, rated voltage, manufacturer, arrangement, type, and the like of the battery cell 12 such as a nickel metal hydride battery, a nickel cadmium battery, or a lithium ion battery. The charging conditions II for each charging method are the charging conditions used for charging the battery cell 12 for each of the three charging methods: fast charging (type A), medium speed charging (type B), and low speed charging (type C). Is specifically identified. For example, charging voltage and charging current limit value, end current value, charging voltage twice differential value: Δ2V value, charging temperature gradient: -Δt as one protocol, and multiple protocols by charging method as charging conditions It is prepared. The termination current value is a current value when the battery-side microcomputer 13 determines that the battery cell 12 has reached full charge when the value of the current flowing through the battery cell 12 drops to such a value. The Δ2V value and −Δt are also parameters used when determining whether the battery cell 12 is fully charged according to the type of the battery cell 12. The other battery information III is information indicating the battery state such as the history of the charging conditions used for charging the battery pack 10 and the number of times of charging.

次に、充電器２０による電池パック１０の充電について図３を参照して説明する。   Next, charging of the battery pack 10 by the charger 20 will be described with reference to FIG.

電池パック１０が充電器２０の本体２１に接続されると、充電器２０では、充電器側マイコン２１が電池パック１０の接続を確認すると共に（Ｓ１）、電池パック１０では、電池側マイコン１３が充電器２０に接続されたことを確認する（Ｓ１１）。次に、充電器２０は、電池パック１０を充電する充電方式として高速充電（タイプＡ）を行う旨を電池側マイコン１３に通知する（Ｓ２）。このとき、電池パック１０は、充電器２０から充電方式情報が高速充電である旨を受信する（Ｓ１２）。   When the battery pack 10 is connected to the main body 21 of the charger 20, in the charger 20, the charger side microcomputer 21 confirms the connection of the battery pack 10 (S1), and in the battery pack 10, the battery side microcomputer 13 It is confirmed that it is connected to the charger 20 (S11). Next, the charger 20 notifies the battery-side microcomputer 13 that high-speed charging (type A) is performed as a charging method for charging the battery pack 10 (S2). At this time, the battery pack 10 receives from the charger 20 that the charging method information is high-speed charging (S12).

電池パック１０は、充電方式情報の受信により、電池セル１２の高速充電が開始されることを知り、電池側メモリ１４に記憶されている充電回数を１つだけ増やして更新する（Ｓ１３）。次に、電池側マイコン１３は、充電方式が高速充電であること、及び電池側メモリ１４に記憶された充電回数を考慮して、電池側メモリ１４に記憶された複数のプロトコルのうち、高速充電用（タイプＡ）用に設定された複数のプロトコルのうち、充電回数に最も適した例えばプロトコル１を選択する（Ｓ１４）。次に、選択されたプロトコル１（タイプＡ）を充電器２０に送信する（Ｓ１５）。   The battery pack 10 knows that fast charging of the battery cell 12 is started by receiving the charging method information, and updates the battery pack 10 by incrementing the number of times of charging stored in the battery-side memory 14 by one (S13). Next, the battery-side microcomputer 13 takes into account that the charging method is high-speed charging and the number of times of charging stored in the battery-side memory 14, among the plurality of protocols stored in the battery-side memory 14. For example, protocol 1 that is most suitable for the number of times of charging is selected from a plurality of protocols set for use (type A) (S14). Next, the selected protocol 1 (type A) is transmitted to the charger 20 (S15).

充電器２０は、電池パック１０からプロトコル１（タイプＡ）を受信すると（Ｓ３）、プロトコル１（タイプＡ）に規定された充電電圧及び充電電流のリミット値を用いて、電池パック１０の充電を開始する（Ｓ４，Ｓ１６）。電池パック１０では、電池側マイコン１３は、充電中の電池セル１２の電池電圧及び充電電流を定期的に或いは連続して監視し、電池電圧及び充電電流が、それぞれのリミット値を超えないように制御する。電池セル１２は、満充電に近づくにつれて充電電流は減少するので、充電電流が終止電流値にまで低下した時、電池側マイコン１３は、電池セル１２は満充電と判断して充電を完了する（Ｓ５，Ｓ１７）。   When the charger 20 receives the protocol 1 (type A) from the battery pack 10 (S3), the charger 20 charges the battery pack 10 using the charging voltage and charging current limit values defined in the protocol 1 (type A). Start (S4, S16). In the battery pack 10, the battery-side microcomputer 13 periodically or continuously monitors the battery voltage and charging current of the battery cell 12 being charged so that the battery voltage and charging current do not exceed the respective limit values. Control. Since the charging current of the battery cell 12 decreases as it approaches full charge, when the charging current decreases to the end current value, the battery side microcomputer 13 determines that the battery cell 12 is fully charged and completes charging ( S5, S17).

次に、図４に、充電器２０を用いて、同一の充電方式で、例えば高速充電で充電を行う場合、電池セル１２の定格電圧が互いに同一でありながらも電池セルのメーカ又は型式が異なる２種類の電池パック１０を充電するときの電池電圧及び充電電流の様子を示す。図４において、実線は、電池セル１２の定格電圧に応じて充電器２０が提供する規定プロトコルの充電電圧及び充電電流のリミット値及び終止電流値を示す。   Next, in FIG. 4, when charging is performed using the charger 20 by the same charging method, for example, by high-speed charging, the battery cell manufacturer or model is different although the rated voltages of the battery cells 12 are the same. The state of the battery voltage and charging current when charging two types of battery packs 10 is shown. In FIG. 4, the solid line indicates the charging voltage and charging current limit value and the termination current value of the specified protocol provided by the charger 20 according to the rated voltage of the battery cell 12.

電池パック１０が電池セルＡからなる場合、電池側マイコン１３は、電池セルＡを充電するために、充電電圧のリミット値としてＶＡ、充電電流のリミット値としてＩＡ，終止電流値ＩＡＥを含むプロトコルを選択する。選択された充電電圧及び充電電流のリミット値、並びに終止電流値のいずれも、規定プロトコルのリミット値、終止電流値、終止電流値よりも小さい。充電器側マイコン２２は、充電電圧及び充電電流のリミット値ＶＡ、ＩＡを用いて充電を開始し、終止電流値ＩＡＥで充電を終了することによって、電池セルＡからなる電池パック１０を満充電とする。 When the battery pack 10 includes the battery cell A, the battery-side microcomputer 13 charges the battery cell A with V A as the limit value of the charging voltage, I A as the limit value of the charging current, and the termination current value I AE . Select the protocol to include. Any of the selected charging voltage and charging current limit values and the end current value are smaller than the limit value, end current value, and end current value of the specified protocol. The charger-side microcomputer 22 starts charging using the limit values V A and I A of the charging voltage and charging current, and ends the charging with the termination current value I AE , so that the battery pack 10 including the battery cell A is removed. Fully charged.

一方、電池パック１０が電池セルＡとはメーカ又は型式が異なる電池セルＢからなる場合、電池側マイコン１３は、電池セルＢを充電するために、充電電圧のリミット値としてＶＢ、充電電流のリミット値としてＩＢ，終止電流値ＩＢＥを含むプロトコルを選択する。選択された充電電圧及び充電電流のリミット値、並びに終止電流値のいずれも、規定プロトコルのリミット値、終止電流値、終止電流値よりも大きい。充電器側マイコン２２は、充電電圧及び充電電流のリミット値ＶＢ、ＩＢを用いて充電を開始し、終止電流ＩＢＥで充電を終了することによって、電池セルＢからなる電池パック１０を満充電とする。 On the other hand, when the battery pack 10 is composed of a battery cell B having a different manufacturer or model from the battery cell A, the battery side microcomputer 13 charges the battery cell B with V B as the limit value of the charging voltage. The protocol including I B and the end current value I BE is selected as the limit value. Any of the selected charging voltage and charging current limit values, and the termination current value are larger than the limit value, termination current value, and termination current value of the specified protocol. The charger-side microcomputer 22 starts charging using the charging voltage and charging current limit values V B and I B , and ends charging with the end current I BE , thereby filling the battery pack 10 including the battery cell B. Charge.

以上のようにして、電池パック１０の電池セル１２の定格電圧が同じであったとしても、充電器２０による充電方式及び電池セル１２のメーカや型式に応じて、プロトコルを選択することによって、電池セル１２を、電池セル１２に最適の充電電圧、充電電流、及び終止電流値等の充電条件で満充電とすることができる。すなわち、電池パック１０の公称容量にまで充電させることができる。   As described above, even if the rated voltage of the battery cell 12 of the battery pack 10 is the same, the battery can be selected by selecting the protocol according to the charging method by the charger 20 and the manufacturer and model of the battery cell 12. The cell 12 can be fully charged under charging conditions such as a charging voltage, a charging current, and a termination current value that are optimal for the battery cell 12. That is, the battery pack 10 can be charged to the nominal capacity.

さらに、電池セル１２のメーカや型式の他に、電池パック１０の充電回数も考慮してプロトコルを選択できるので、電池パック１０の実際の電池状態に最適の条件で充電でき、実際の電池セル１２の劣化を予防することができる。   Furthermore, in addition to the manufacturer and model of the battery cell 12, the protocol can be selected in consideration of the number of times the battery pack 10 is charged. Therefore, the battery can be charged under the optimum conditions for the actual battery state of the battery pack 10. Can be prevented.

なお、上記実施の形態において、充電方式の各々に応じて電池パック１０の電池側メモリ１４に記憶された複数のプロトコルは、充電器２０の充電器側メモリ２３に記憶させても良い。この場合、電池パック１０は、Ｓ１２にて充電方式情報を受信すると、Ｓ１３にて充電回数を更新した後、Ｓ１４及びＳ１５での動作に代えて、電池側メモリ１４に記憶された電池セル１２の種類、定格電圧、配列、メーカ、又は型式等の電池情報と充電回数とを充電器２０に送信する。なお、電池情報として、電池セル１２の種類、定格電圧、配列、メーカ、又は型式等の記憶された情報の全てを充電器２０に送信することもできるが、電池セル１２の種類、定格電圧、配列、メーカ、又は型式等のうちの少なくとも１つを充電器２０に送信することもできる。   In the above-described embodiment, a plurality of protocols stored in the battery-side memory 14 of the battery pack 10 according to each charging method may be stored in the charger-side memory 23 of the charger 20. In this case, when the battery pack 10 receives the charging method information in S12, the battery pack 10 updates the number of times of charging in S13, and then replaces the operation in S14 and S15 with the battery cell 12 stored in the battery-side memory 14. The battery information such as type, rated voltage, arrangement, manufacturer, or model and the number of times of charging are transmitted to the charger 20. In addition, as battery information, all the stored information such as the type, rated voltage, arrangement, manufacturer, or model of the battery cell 12 can be transmitted to the charger 20, but the type of battery cell 12, the rated voltage, At least one of the array, manufacturer, model, etc. can also be transmitted to the charger 20.

一方、充電器２０は、Ｓ３において、プロトコルの代わりに、上記の電池情報と充電回数との受信に備え待機する。そして、電池情報と充電回数とを受信すると、充電器側マイコン２２は、充電方式と、受信した電池情報及び充電回数とを考慮して、充電器側メモリ２３に記憶された複数のプロトコルから、最適のプロトコルを選択する。次に、Ｓ４において、プロトコルに規定された充電条件を用いて、充電器２０は、電池パック１０の充電を開始する（Ｓ４，Ｓ１６）。電池パック１０では、電池側マイコン１３は、充電中の電池セル１２の充電電圧及び充電電流を定期的に或いは連続して監視し、充電電圧及び充電電流が、それぞれのリミット値を超えないように制御する。電池セル１２は、満充電に近づくにつれて充電電流は減少するので、充電電流が終止電流値にまで低下した時、電池側マイコン１３は、電池セル１２は満充電と判断して充電を完了する（Ｓ５，Ｓ１７）。   On the other hand, the charger 20 stands by in preparation for receiving the battery information and the number of times of charging in S3 instead of the protocol. Then, when the battery information and the number of times of charging are received, the charger side microcomputer 22 considers the charging method, the received battery information and the number of times of charging, and from a plurality of protocols stored in the charger side memory 23, Choose the best protocol. Next, in S4, the charger 20 starts charging the battery pack 10 using the charging conditions specified in the protocol (S4, S16). In the battery pack 10, the battery-side microcomputer 13 regularly or continuously monitors the charging voltage and charging current of the battery cell 12 being charged so that the charging voltage and charging current do not exceed the respective limit values. Control. Since the charging current of the battery cell 12 decreases as it approaches full charge, when the charging current decreases to the end current value, the battery side microcomputer 13 determines that the battery cell 12 is fully charged and completes charging ( S5, S17).

このように、充電器２０においても、電池パック１０の電池セル１２の種類、定格電圧、配列、メーカ、又は型式等の電池情報と充電回数とに基づいてプロトコルを選択させることによって、電池パック１０の定格電圧が同じでありながらも電池セル１２のメーカや型式、充電回数に応じた最適の充電電圧、充電電流、及び終止電流値で電池セル１２を満充電とすることができる。従って、電池パック１０の公称容量にまで充電させることができると共に、電池パック１０の劣化を防止することができる。   As described above, in the charger 20, the battery pack 10 is selected by selecting the protocol based on the battery information such as the type, rated voltage, arrangement, manufacturer, or model of the battery cell 12 of the battery pack 10 and the number of times of charging. Although the rated voltage of the battery cell 12 is the same, the battery cell 12 can be fully charged with the optimum charge voltage, charge current, and end current value according to the manufacturer and model of the battery cell 12 and the number of times of charging. Therefore, the battery pack 10 can be charged to the nominal capacity, and deterioration of the battery pack 10 can be prevented.

なお、電池パック１０を充電器２０により低速充電で充電する場合、電池セル１２を流れる充電電流量が高速充電や中速充電に比較して低いために、充電による電池セル１２の劣化が、高速充電や中速充電に比較して生じにくい。従って、低速充電で電池パック１０を充電する回数が多い場合は、電池パック１０から充電器２０への充電回数の通知を省略しても良い。   When the battery pack 10 is charged by the charger 20 at low speed charging, the amount of charging current flowing through the battery cell 12 is lower than that of high speed charging or medium speed charging. Less likely to occur compared to charging or medium speed charging. Therefore, when the number of times of charging the battery pack 10 by low speed charging is large, the notification of the number of times of charging from the battery pack 10 to the charger 20 may be omitted.

また、その他の電池情報IIIとして、電池セル１２の内部抵抗や、電池セル１２の電池温度を利用することもできる。   Further, as other battery information III, the internal resistance of the battery cell 12 or the battery temperature of the battery cell 12 can be used.

さらに、電池セル１２の種類に応じて、採用されたプロトコルのうち、電池セル１２の種類によっては充電電圧の２回微分値：Δ２Ｖ値や充電中の温度勾配：−Δｔを充電のパラメータとして電池パック１０を充電することもできる。   Further, depending on the type of the battery cell 12, among the protocols adopted, depending on the type of the battery cell 12, the battery is charged with a second-order differential value of the charging voltage: Δ2V value or a temperature gradient during charging: −Δt as a charging parameter. The pack 10 can also be charged.

本発明は、二次電池からなる電池パック及びかかる電池パックを充電する充電器に利用することができる。   The present invention can be used for a battery pack including a secondary battery and a charger for charging the battery pack.

１０ 電池パック
１２ 二次電池
１３ 電池側マイコン
２０ 充電器
２２ 充電器側マイコン DESCRIPTION OF SYMBOLS 10 Battery pack 12 Secondary battery 13 Battery side microcomputer 20 Charger 22 Charger side microcomputer

Claims (4)

二次電池を有する電池パックを少なくとも１つの充電方式で充電可能な充電器であって、
前記充電方式を前記電池パックに通知する通知部と、
前記通知部による通知に応じた前記電池パックから、前記充電方式に応じた前記二次電池の充電条件を取得する取得部と、
前記充電条件に基づいて前記二次電池を充電する制御部と、
を有することを特徴とする充電器。 A charger capable of charging a battery pack having a secondary battery by at least one charging method,
A notification unit for notifying the battery pack of the charging method;
An acquisition unit that acquires a charging condition of the secondary battery according to the charging method from the battery pack according to the notification by the notification unit;
A control unit for charging the secondary battery based on the charging condition;
A charger characterized by comprising: 二次電池を有する電池パックを少なくとも１つの充電方式で充電可能な充電器であって、
前記充電方式を前記電池パックに通知する通知部と、
前記通知部による通知に応じた前記電池パックから、前記充電方式に対応した前記二次電池の電池特性を取得する取得部と、
前記電池特性に基づいて前記二次電池の充電条件を設定する設定部と、
前記充電条件に基づいて前記二次電池を充電する制御部と、
を有することを特徴とする充電器。 A charger capable of charging a battery pack having a secondary battery by at least one charging method,
A notification unit for notifying the battery pack of the charging method;
An acquisition unit for acquiring battery characteristics of the secondary battery corresponding to the charging method from the battery pack according to the notification by the notification unit;
A setting unit for setting charging conditions of the secondary battery based on the battery characteristics;
A control unit for charging the secondary battery based on the charging condition;
A charger characterized by comprising: 充電器によって少なくとも１つの充電方式で充電される電池パックであって、
二次電池と、
前記充電方式に関する情報を取得する取得部と、
取得された情報と前記二次電池の電池特性とに基づいて充電条件を設定する設定部と、
前記充電条件を前記充電器に通知する通知部と、
前記充電条件に基づいた前記二次電池の充電を制御する制御部と、
を有することを特徴とする電池パック。 A battery pack that is charged by a charger in at least one charging method,
A secondary battery,
An acquisition unit for acquiring information on the charging method;
A setting unit for setting a charging condition based on the acquired information and the battery characteristics of the secondary battery;
A notification unit for notifying the charger of the charging condition;
A control unit for controlling charging of the secondary battery based on the charging condition;
A battery pack comprising: 充電器によって少なくとも１つの充電方式で充電される電池パックであって、
二次電池と、
前記充電方式に関する情報を取得する取得部と、
取得された情報に基づいた前記二次電池の電池特性を前記充電器に通知する通知部と、
前記通知部による通知の後に開始される前記二次電池の充電を制御する制御部と、
を有することを特徴とする電池パック。 A battery pack that is charged by a charger in at least one charging method,
A secondary battery,
An acquisition unit for acquiring information on the charging method;
A notification unit for notifying the charger of battery characteristics of the secondary battery based on the acquired information;
A control unit for controlling charging of the secondary battery started after notification by the notification unit;
A battery pack comprising:
JP2010072553A 2010-03-26 2010-03-26 Charger and battery pack Pending JP2011205839A (en)

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KR20150073677A (en) * 2013-12-23 2015-07-01 삼성전자주식회사 Charging apparatus and operating method thereof
KR20170133469A (en) * 2016-02-05 2017-12-05 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Adapter and charge control method
KR20170133481A (en) * 2016-02-05 2017-12-05 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Terminal charging method, terminal charging system and power adapter
CN113424354A (en) * 2019-02-27 2021-09-21 三洋电机株式会社 Battery pack charging method, battery pack, and power supply device
KR20220076527A (en) * 2018-12-21 2022-06-08 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Charging method and apparatus for multiple cells, and electronic device

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JP2004172058A (en) * 2002-11-22 2004-06-17 Matsushita Electric Ind Co Ltd Battery management system and battery pack
JP2008167642A (en) * 2006-12-04 2008-07-17 Matsushita Electric Ind Co Ltd Charging system, charging device, and battery pack

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JP2013126325A (en) * 2011-12-15 2013-06-24 Panasonic Eco Solutions Power Tools Co Ltd Charging circuit
US9142993B2 (en) 2011-12-15 2015-09-22 Panasonic Intellectual Property Management Co., Ltd. Charge circuit, and battery-charger assemblage with the charge circuit
KR20150073677A (en) * 2013-12-23 2015-07-01 삼성전자주식회사 Charging apparatus and operating method thereof
US11121559B2 (en) 2013-12-23 2021-09-14 Samsung Electronics Co., Ltd. Method and apparatus for charging a battery
KR102215085B1 (en) 2013-12-23 2021-02-15 삼성전자주식회사 Charging apparatus and operating method thereof
KR102138109B1 (en) * 2016-02-05 2020-07-28 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Adapter and charging control method
KR102183635B1 (en) 2016-02-05 2020-11-27 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Adapter and charging control method
KR20180023995A (en) * 2016-02-05 2018-03-07 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Adapter and charge control method
JP2018516057A (en) * 2016-02-05 2018-06-14 グァンドン オッポ モバイル テレコミュニケーションズ コーポレーション リミテッド Adapter and charge control method
US10411494B2 (en) 2016-02-05 2019-09-10 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Adapter and method for charging control
US10637276B2 (en) 2016-02-05 2020-04-28 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Adapter and method for charging control
KR102138091B1 (en) * 2016-02-05 2020-07-28 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Adapter and charging control method
KR20180008619A (en) * 2016-02-05 2018-01-24 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Adapter and charge control method
US10819134B2 (en) 2016-02-05 2020-10-27 Guangdong Oppo Mobile Telecommuncations Corp., Ltd. Adapter and method for charging control
KR20180018741A (en) * 2016-02-05 2018-02-21 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Adapter and charge control method
KR102196455B1 (en) * 2016-02-05 2020-12-30 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Adapter and charging control method
US10910866B2 (en) 2016-02-05 2021-02-02 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Charging system and charging method for terminal and power adapter
KR20170133481A (en) * 2016-02-05 2017-12-05 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Terminal charging method, terminal charging system and power adapter
KR102275888B1 (en) 2016-02-05 2021-07-09 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Terminal charging method, terminal charging system and power adapter
US11070076B2 (en) 2016-02-05 2021-07-20 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Charging method, charging system, and power adapter
KR20170133469A (en) * 2016-02-05 2017-12-05 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Adapter and charge control method
KR20220076527A (en) * 2018-12-21 2022-06-08 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Charging method and apparatus for multiple cells, and electronic device
KR102618970B1 (en) * 2018-12-21 2023-12-29 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Charging method and apparatus for multiple cells, and electronic device
CN113424354A (en) * 2019-02-27 2021-09-21 三洋电机株式会社 Battery pack charging method, battery pack, and power supply device

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