JP2012210113A - Charging apparatus - Google Patents

Charging apparatus Download PDF

Info

Publication number
JP2012210113A
JP2012210113A JP2011075044A JP2011075044A JP2012210113A JP 2012210113 A JP2012210113 A JP 2012210113A JP 2011075044 A JP2011075044 A JP 2011075044A JP 2011075044 A JP2011075044 A JP 2011075044A JP 2012210113 A JP2012210113 A JP 2012210113A
Authority
JP
Japan
Prior art keywords
charging
temperature
battery
battery pack
charger
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.)
Withdrawn
Application number
JP2011075044A
Other languages
Japanese (ja)
Inventor
Takuya Imai
拓也 今井
Atsuo Matsumoto
淳雄 松本
Tateaki Nagashima
健彰 長島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Priority to JP2011075044A priority Critical patent/JP2012210113A/en
Publication of JP2012210113A publication Critical patent/JP2012210113A/en
Withdrawn legal-status Critical Current

Links

Images

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

Abstract

PROBLEM TO BE SOLVED: To solve the problem that it is necessary for a charger in a rechargeable battery pack to detect battery voltage of a total of a plurality of batteries obtained by combining single batteries in series, and to set a constant-voltage control voltage value of the charger of the rechargeable battery pack controlling a charging voltage value so as not to exceed the detected voltage value detected for each of the single batteries in the rechargeable battery pack, thereby lowering a charge capacity value of a rechargeable battery to be charged.SOLUTION: An overvoltage protection value for protecting a rechargeable battery according to a temperature can be changed by detecting a voltage value and temperature of the rechargeable battery. When the voltage value of the rechargeable battery reaches the overvoltage protection value, a rechargeable battery pack transmits a signal. Upon detection of the signal, a charger changes a charging current of the charger and, according to the detected temperature, changes the charging current in order to suppress heat generation of the battery.

Description

本発明では、充電電池を組み合わせた複数電池の二次電池パックおよび二次電池パックを充電する充電器で構成される充電装置において、充電電池の電圧値および温度を検出し、温度に応じて充電電池を保護するための過電圧保護値を可変することができるようにし、充電電池の電圧値が過電圧保護値に到達すると二次電池パックは信号を送信し、充電器はその信号を検出する事により、充電器の充電電流を切替え、また検出した温度に応じて、電池の発熱を抑えるために充電電流を切替え、かつ、これらの充電電流切替の定電流回路を同一の回路で実現する事を特徴とした充電装置に関するものである。   In the present invention, in a charging device including a secondary battery pack of a plurality of batteries combined with a charging battery and a charger for charging the secondary battery pack, the voltage value and temperature of the charging battery are detected, and charging is performed according to the temperature. The overvoltage protection value for protecting the battery can be changed.When the voltage value of the rechargeable battery reaches the overvoltage protection value, the secondary battery pack transmits a signal, and the charger detects the signal. Switching the charging current of the charger, switching the charging current to suppress battery heat generation according to the detected temperature, and realizing the constant current circuit for switching these charging currents in the same circuit It is related with the charging device.

近年、充電により再利用可能な二次電池、特に軽量で高容量なリチウムイオン電池は、本体機器使用時にＣＯ２を排出しないなど環境にやさしい電源として、ポータブルオーディオやデジタルスチルカメラといった携帯電子機器だけでなく、電動アシスト自転車や自動二輪車等にリチウムイオン電池を搭載する動きが活発化している。市場の動向として、搭載機器を長時間駆動させることができるように、リチウムイオン電池は電池容量を増加させる傾向が強くなっている。しかしながら、リチウムイオン電池の容量を増加させる事はリチウムイオン電池の安全性にも大きく影響するため、日本国内では、そのリチウムイオン電池の安全性を確保するため、従来の電気用品安全法にリチウムイオン電池に関する新たな技術基準を追加し、新しい規制が施行される予定である。この規制では、４５℃以上の充電は充電制御電圧が制限される。   In recent years, rechargeable secondary batteries, especially light-weight and high-capacity lithium-ion batteries, can be used only for portable electronic devices such as portable audio and digital still cameras as environmentally friendly power sources that do not emit CO2 when using the main unit. However, there is an increasing movement to install lithium-ion batteries in electric assist bicycles and motorcycles. As a market trend, lithium ion batteries have a tendency to increase battery capacity so that on-board equipment can be driven for a long time. However, increasing the capacity of a lithium ion battery greatly affects the safety of the lithium ion battery. Therefore, in Japan, in order to ensure the safety of the lithium ion battery, the conventional law on the New regulations on batteries will be added and new regulations will be enforced. Under this regulation, the charge control voltage is limited for charging at 45 ° C. or higher.

新しい技術基準が施行された場合、直列に充電電池を組み合わせたリチウムイオンの二次電池パックを充電する場合において、充電電池の個々の電圧を検出し、その電圧値が一定電圧値以上とならない制御方式にしなければ、技術基準を満足する事ができないと考えられている。さらに、充電電池の検出温度に応じて、その電圧値を可変させなければならないことも考えられている。   When a new technical standard is implemented, when charging a lithium-ion secondary battery pack that combines rechargeable batteries in series, individual voltage of the rechargeable battery is detected, and the voltage value does not exceed a certain voltage value It is thought that the technical standard cannot be satisfied without the method. Furthermore, it is considered that the voltage value must be varied according to the detected temperature of the rechargeable battery.

また、複数の充電電池を組み合わせた二次電池パックにおいて、使用サイクルが増え、寿命末期になると、充電電池は個々の特性は均一ではく、劣化状態に差が生じるため、充電電池の電圧にアンバランスが生じる。この場合、ある特定の充電電池のみ過充電になったり、過放電になったりしてしまい、リチウムイオン電池の安全性に大きく影響を与えてしまう。特にリチウムイオン電池の劣化は熱により大きく影響され、充電時、放電時に個々のリチウムイオン電池の発熱に温度差があると、リチウムイオン電池の劣化状態に差が生じてしまう。このため、リチウムイオン電池の劣化状態に差が生じないように、充電中や放電中のリチウムイオン電池の発熱は極力抑えなければならない。   In addition, in a secondary battery pack in which a plurality of rechargeable batteries are combined, when the usage cycle increases and the end of the life is reached, the rechargeable battery has individual characteristics that are not uniform and a difference in deterioration state. Balance arises. In this case, only a specific rechargeable battery is overcharged or overdischarged, which greatly affects the safety of the lithium ion battery. In particular, deterioration of a lithium ion battery is greatly influenced by heat, and if there is a temperature difference in the heat generation of each lithium ion battery during charging and discharging, a difference occurs in the deterioration state of the lithium ion battery. For this reason, it is necessary to suppress the heat generation of the lithium ion battery during charging and discharging as much as possible so that there is no difference in the deterioration state of the lithium ion battery.

新しい技術基準に対応するため、直列に充電電池を組み合わせた複数電池の二次電池パックを充電する充電装置については、充電電池の個々の電圧値を検出し、その電圧値に対して、充電保護を行うといった技術が知られている（例えば、特許文献１）。また、リチウムイオン電池の発熱を抑えるために、充電電池の上昇温度を検出し、充電電流を低減させ、リチウムイオン電池および充電器の発熱を抑制する技術が知られている。   In order to comply with new technical standards, for charging devices that charge secondary battery packs consisting of multiple rechargeable batteries in series, individual voltage values of the rechargeable batteries are detected and charge protection is applied to those voltage values. The technique of performing is known (for example, Patent Document 1). In order to suppress the heat generation of the lithium ion battery, a technique for detecting the rising temperature of the rechargeable battery, reducing the charging current, and suppressing the heat generation of the lithium ion battery and the charger is known.

特開２００３−１３４６８６号公報JP 2003-134686 A

二次電池パック内に、充電電池の個々の電圧を検出する機能を設け、その検出機能にて充電電池の個々の電圧を検出し、検知した電圧が設定値に達した場合に充電を停止する方法では、充電電池を直列に組み合わせた複数電池のトータル電圧を検出し、充電電圧を定電圧制御している充電器の定電圧制御電圧値は、前述した二次電池パック内で充電電池毎に検出している検出電圧値以下に設定する必要があるため、充電される充電電池の充電容量値は低くなり、搭載する電子機器の駆動時間は従来と比較し短くなってしまう課題がある。   In the secondary battery pack, a function to detect the individual voltage of the rechargeable battery is provided. The detection function detects the individual voltage of the rechargeable battery and stops charging when the detected voltage reaches the set value. In the method, the constant voltage control voltage value of the charger that detects the total voltage of a plurality of batteries in which rechargeable batteries are combined in series and performs constant voltage control of the charging voltage is determined for each rechargeable battery in the secondary battery pack described above. Since it is necessary to set the detected voltage value to be equal to or lower than the detected voltage value, the charge capacity value of the rechargeable battery is lowered, and there is a problem that the driving time of the electronic device to be mounted becomes shorter than the conventional one.

さらに周囲環境や充電器の煽り熱による充電電池の発熱を抑えるために充電電流を低減させるには、従来は低減させる充電電流だけの定電流回路を追加しており、回路の複雑化、部品点数の増加に繋がる。   Furthermore, in order to reduce the charging current in order to suppress the heat generation of the rechargeable battery due to the surrounding environment and the heat generated by the charger, a constant current circuit with only a reduced charging current has been added in the past. Leading to an increase in

本発明は上記課題を鑑みたものであり、直列に充電電池を組み合わせた二次電池パックを充電する充電装置において、充電電池の個々の電圧および電池温度を検出する機能を設け、充電電池の電圧値および温度を検出し、充電電池を保護するための過電圧保護値に充電電池の電圧値が到達した時に信号を出力する二次電池パックの信号を検出する事により、充電装置の充電電流を低減させ、充電電池の電圧値を低減する制御を行い、その動作を繰り返す事によって、充電電池の個々の電圧が過電圧保護電圧値を越えない様に、徐々に電池容量を増加させ、充電されるリチウムイオン電池をより満充電に近い状態まで充電する事ができる。また検出した充電電池の温度に応じて充電制御電圧を可変させ、その温度に応じた最適な充電制御電圧値で充電することができる。   The present invention has been made in view of the above problems, and in a charging device for charging a secondary battery pack in which a rechargeable battery is combined in series, a function of detecting individual voltages and battery temperatures of the rechargeable battery is provided, and the rechargeable battery voltage is provided. The charging current of the charging device is reduced by detecting the signal of the secondary battery pack that outputs a signal when the voltage value of the charging battery reaches the overvoltage protection value to protect the charging battery by detecting the value and temperature The battery is controlled to reduce the voltage value of the rechargeable battery, and by repeating the operation, the battery capacity is gradually increased so that the individual voltage of the rechargeable battery does not exceed the overvoltage protection voltage value. The ion battery can be charged to a state close to full charge. Further, the charging control voltage can be varied according to the detected temperature of the charging battery, and charging can be performed with the optimum charging control voltage value corresponding to the temperature.

また、充電電池の温度が検出し、規定温度に達すると、充電電池の温度を下げるために充電電流を低減する。これにより満充電に近い状態まで充電ことができ、かつ充電電池の発熱を抑え、発熱による充電電池の劣化を抑える充電装置を提供することを目的とする。   Further, when the temperature of the rechargeable battery is detected and reaches a specified temperature, the charge current is reduced in order to lower the temperature of the rechargeable battery. Accordingly, an object of the present invention is to provide a charging device that can be charged to a state close to full charge, suppresses heat generation of the charging battery, and suppresses deterioration of the charging battery due to heat generation.

さらに充電電池の電圧値を下げることを目的として低減する充電電流と充電電池の温度を下げることを目的として低減する充電電流の切替用定電流回路を共用することにより、簡単で安価な回路で実現できることを特徴とする。   In addition, it is realized with a simple and inexpensive circuit by sharing the constant current circuit for switching the charging current that is reduced for the purpose of lowering the voltage value of the charging battery and the charging current that is reducing for the purpose of lowering the temperature of the charging battery. It is possible to do.

複数の充電電池を組み合わせた電池群と前記電池群の温度を検出する温度検出装置と前記充電電池の個々の電圧値および前記温度検出装置により検出した温度を検出し、前記電池群の充電や放電を制御する電池パック制御ＩＣを備える二次電池パックと、この二次電池パックを充電端子により接続し、電源供給回路からの電力を充電制御ＩＣによって制御しながら二次電池パックを充電する充電器からなる充電装置において、前記二次電池パックの温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電電池を保護するための過電圧保護値を可変し、また、前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことを検知した前記電池パック制御ＩＣは信号を充電器の充電制御ＩＣに通信し、この信号によって充電器の充電電流を切り替える切替用定電流回路を充電制御ＩＣに設け、また、前記温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電器の充電電流を切り替える切替用定電流回路を設け、さらに前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことにより充電電流を切り替える切替用定電流回路と前記検出した温度に応じて充電電流を切り替える切替用定電流回路を同一の回路で実現する事を特徴とした充電装置である。   A battery group in which a plurality of rechargeable batteries are combined, a temperature detecting device for detecting the temperature of the battery group, an individual voltage value of the charging battery and a temperature detected by the temperature detecting device, and charging and discharging of the battery group A battery pack that includes a battery pack control IC that controls the battery pack, and a charger that connects the secondary battery pack with a charging terminal and charges the secondary battery pack while controlling the power from the power supply circuit with the charge control IC The charging control IC of the charger detects the temperature detected by the temperature detection device of the secondary battery pack, and varies the overvoltage protection value for protecting the charging battery according to the detected temperature, Further, the battery pack control IC that has detected that the voltage value of any of the rechargeable batteries in the battery group has reached a specified voltage communicates a signal to the charge control IC of the charger. A switching constant current circuit for switching the charging current of the charger according to this signal is provided in the charging control IC, and the temperature detected by the temperature detection device is detected by the charging control IC of the charger and charged according to the detected temperature. A switching constant current circuit for switching the charging current of the battery, and a switching constant current circuit for switching the charging current when the voltage value of any charging battery in the battery group reaches a specified voltage and the detected temperature The charging device is characterized in that the switching constant current circuit for switching the charging current in response is realized by the same circuit.

また、複数の充電電池を組み合わせた電池群と前記電池群の温度を検出する温度検出装置と前記充電電池の個々の電圧値および前記温度検出装置により検出した温度を検出し、前記電池群の充電や放電を制御する電池パック制御ＩＣと前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことを検知した電池パック制御ＩＣからの信号により前期温度検出装置を短絡するスイッチを備える二次電池パックと、この二次電池パックを充電端子により接続し、電源供給回路からの電力を充電制御ＩＣによって制御しながら二次電池パックを充電する充電器からなる充電装置において、前記二次電池パックの温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電電池を保護するための過電圧保護値を可変し、また、前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことを検知した電池パック制御ＩＣは前期温度検出装置を短絡するスイッチを短絡し、充電器は前記温度検出装置が短絡されたことを検知することによって充電器の充電電流を切り替える切替用定電流回路を充電制御ＩＣに設け、また、前記温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電器の充電電流を切り替える切替用定電流回路を設け、さらに前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことにより充電電流を切り替える切替用定電流回路と前記検出した温度に応じて充電電流を切り替える切替用定電流回路を同一の回路で実現する事を特徴とした充電装置である。   In addition, a battery group in which a plurality of rechargeable batteries are combined, a temperature detecting device that detects the temperature of the battery group, individual voltage values of the charging battery, and a temperature detected by the temperature detecting device are detected, and charging of the battery group is performed. A battery pack control IC that controls discharge and discharge, and a switch that short-circuits the previous temperature detection device based on a signal from the battery pack control IC that detects that the voltage value of any of the rechargeable batteries in the battery group has reached a specified voltage. In a charging device comprising a secondary battery pack and a charger that connects the secondary battery pack with a charging terminal and charges the secondary battery pack while controlling power from a power supply circuit by a charge control IC, the secondary battery pack includes: Overvoltage protection to protect the rechargeable battery according to the detected temperature by the charging control IC of the charger, detecting the temperature detected by the temperature detector of the battery pack The battery pack control IC that has detected that the voltage value of any of the rechargeable batteries in the battery group has reached a specified voltage short-circuits the switch that short-circuits the previous temperature detection device, and the charger The charging control IC is provided with a switching constant current circuit for switching the charging current of the charger by detecting that the detection device is short-circuited, and the charging control IC of the charger detects the temperature detected by the temperature detection device. And a switching constant current circuit for switching the charging current of the charger according to the detected temperature, and for switching the switching of the charging current when the voltage value of any charging battery in the battery group reaches a specified voltage. The charging device is characterized in that the constant current circuit and the switching constant current circuit for switching the charging current according to the detected temperature are realized by the same circuit.

本発明により、電気用品安全法にリチウムイオン電池に関して追加される新たな技術基準を満たしながらも二次電池パックの充電容量を十分に確保する事ができる。同時に、充電電池の発熱を抑え、発熱による充電電池の劣化を抑える充電装置を提供するものである。また、充電電池の電圧値を下げるために低減する充電電流の切替用定電流回路と充電電池の温度下げるために低減する充電電流の切替用定電流回路を共用することにより、簡単で安価な回路を提供することができる。   According to the present invention, the charging capacity of the secondary battery pack can be sufficiently ensured while satisfying the new technical standard added to the lithium ion battery in the Electrical Appliance and Material Safety Law. At the same time, the present invention provides a charging device that suppresses heat generation of the rechargeable battery and suppresses deterioration of the rechargeable battery due to heat generation. In addition, by sharing the constant current circuit for switching the charging current that is reduced to reduce the voltage value of the charging battery and the constant current circuit for switching the charging current that is reduced to lower the temperature of the charging battery, a simple and inexpensive circuit is provided. Can be provided.

本発明の充電装置の実施の形態１の回路構成図1 is a circuit configuration diagram of a first embodiment of a charging device according to the present invention. 本発明の充電電流と充電容量の相関図Correlation diagram of charging current and charging capacity of the present invention 温度と充電制御電圧値のプロファイル図Profile diagram of temperature and charge control voltage value 本発明における充電電流と温度のプロファイル図Profile diagram of charging current and temperature in the present invention 本発明の充電装置の実施の形態２の回路構成図Circuit configuration diagram of Embodiment 2 of charging device of the present invention

以下本発明を実施するための最良の形態について、図面を参照しながら説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

（実施の形態１）
複数の充電電池を組み合わせた電池群と前記電池群の温度を検出する温度検出装置と前記充電電池の個々の電圧値および前記温度検出装置により検出した温度を検出し、前記電池群の充電や放電を制御する電池パック制御ＩＣを備える二次電池パックと、この二次電池パックを充電端子により接続し、電源供給回路からの電力を充電制御ＩＣによって制御しながら二次電池パックを充電する充電器からなる充電装置において、前記二次電池パックの温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電電池を保護するための過電圧保護値を可変し、また、前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことを検知した前記電池パック制御ＩＣは信号を充電器の充電制御ＩＣに通信し、この信号によって充電器の充電電流を切り替える切替用定電流回路を充電制御ＩＣに設け、また、前記温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電器の充電電流を切り替える切替用定電流回路を設け、さらに前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことにより充電電流を切り替える切替用定電流回路と前記検出した温度に応じて充電電流を切り替える切替用定電流回路を同一の回路で実現する事を特徴とした充電装置である。 (Embodiment 1)
A battery group in which a plurality of rechargeable batteries are combined, a temperature detecting device for detecting the temperature of the battery group, an individual voltage value of the charging battery and a temperature detected by the temperature detecting device, and charging and discharging of the battery group A battery pack that includes a battery pack control IC that controls the battery pack, and a charger that connects the secondary battery pack with a charging terminal and charges the secondary battery pack while controlling the power from the power supply circuit with the charge control IC The charging control IC of the charger detects the temperature detected by the temperature detection device of the secondary battery pack, and varies the overvoltage protection value for protecting the charging battery according to the detected temperature, Further, the battery pack control IC that has detected that the voltage value of any of the rechargeable batteries in the battery group has reached a specified voltage communicates a signal to the charge control IC of the charger. A switching constant current circuit for switching the charging current of the charger according to this signal is provided in the charging control IC, and the temperature detected by the temperature detection device is detected by the charging control IC of the charger and charged according to the detected temperature. A switching constant current circuit for switching the charging current of the battery, and a switching constant current circuit for switching the charging current when the voltage value of any charging battery in the battery group reaches a specified voltage and the detected temperature The charging device is characterized in that the switching constant current circuit for switching the charging current in response is realized by the same circuit.

また、複数の充電電池を組み合わせた電池群と前記電池群の温度を検出する温度検出装置と前記充電電池の個々の電圧値および前記温度検出装置により検出した温度を検出し、前記電池群の充電や放電を制御する電池パック制御ＩＣと前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことを検知した電池パック制御ＩＣからの信号により前期温度検出装置を短絡するスイッチを備える二次電池パックと、この二次電池パックを充電端子により接続し、電源供給回路からの電力を充電制御ＩＣによって制御しながら二次電池パックを充電する充電器からなる充電装置において、前記二次電池パックの温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電電池を保護するための過電圧保護値を可変し、また、前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことを検知した電池パック制御ＩＣは前期温度検出装置を短絡するスイッチを短絡し、充電器は前記温度検出装置が短絡されたことを検知することによって充電器の充電電流を切り替える切替用定電流回路を充電制御ＩＣに設け、また、前記温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電器の充電電流を切り替える切替用定電流回路を設け、さらに前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことにより充電電流を切り替える切替用定電流回路と前記検出した温度に応じて充電電流を切り替える切替用定電流回路を同一の回路で実現する事を特徴とした充電装置である。   In addition, a battery group in which a plurality of rechargeable batteries are combined, a temperature detection device that detects the temperature of the battery group, individual voltage values of the rechargeable battery, and a temperature detected by the temperature detection device are detected, and the battery group is charged A battery pack control IC that controls discharge and discharge, and a switch that short-circuits the previous temperature detection device based on a signal from the battery pack control IC that detects that the voltage value of any of the rechargeable batteries in the battery group has reached a specified voltage. In a charging device comprising a secondary battery pack and a charger that connects the secondary battery pack with a charging terminal and charges the secondary battery pack while controlling power from a power supply circuit by a charge control IC, the secondary battery pack includes: Overvoltage protection to protect the rechargeable battery according to the detected temperature by the charging control IC of the charger, detecting the temperature detected by the temperature detector of the battery pack The battery pack control IC that has detected that the voltage value of any of the rechargeable batteries in the battery group has reached a specified voltage short-circuits the switch that short-circuits the previous temperature detection device, and the charger The charging control IC is provided with a switching constant current circuit for switching the charging current of the charger by detecting that the detection device is short-circuited, and the charging control IC of the charger detects the temperature detected by the temperature detection device. And a switching constant current circuit for switching the charging current of the charger according to the detected temperature, and for switching the switching of the charging current when the voltage value of any charging battery in the battery group reaches a specified voltage. The charging device is characterized in that the constant current circuit and the switching constant current circuit for switching the charging current according to the detected temperature are realized by the same circuit.

本発明により、電気用品安全法にリチウムイオン電池に関して追加される新たな技術基準を満たしながらも二次電池パックの充電容量を十分に確保する事ができる。同時に、充電電池の発熱を抑え、発熱による充電電池の劣化を抑える充電装置を提供することができる。また、充電電池の電圧値を下げるために低減する充電電流の切替用定電流回路と充電電池の温度下げるために低減する充電電流の切替用定電流回路を共用することにより、簡単で安価な回路を提供することができる。   According to the present invention, the charging capacity of the secondary battery pack can be sufficiently ensured while satisfying the new technical standard added to the lithium ion battery in the Electrical Appliance and Material Safety Law. At the same time, it is possible to provide a charging device that suppresses heat generation of the rechargeable battery and suppresses deterioration of the rechargeable battery due to heat generation. In addition, by sharing the constant current circuit for switching the charging current that is reduced to reduce the voltage value of the charging battery and the constant current circuit for switching the charging current that is reduced to lower the temperature of the charging battery, a simple and inexpensive circuit is provided. Can be provided.

以下、本発明の実施例を図面に基づいて説明する。ただし、以下に示す実施例は、本発明を具体的に説明するものであって、本発明は充電装置、充電方法を以下のものに特定しない。   Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment described below specifically explains the present invention, and the present invention does not specify the charging device and the charging method as follows.

図１は請求項１記載の充電器および充電器に接続される二次電池パックの電気的構成を簡略的に示したブロック図である。   FIG. 1 is a block diagram schematically showing an electrical configuration of a charger according to claim 1 and a secondary battery pack connected to the charger.

本実施例では、充電電池を２本直列に接続し、１つを充電電池１１、他方を充電電池１２とした二次電池パックで説明を行うが、もちろん、充電電池の本数は何本でも良い。また、充電電池の温度を検出する温度検出装置には温度を抵抗値に変換するサーミスタを使用するが、これに限ったものではない。   In this embodiment, a description will be given of a secondary battery pack in which two rechargeable batteries are connected in series, one being a rechargeable battery 11 and the other being a rechargeable battery 12. However, of course, any number of rechargeable batteries may be used. . Moreover, although the thermistor which converts temperature into resistance value is used for the temperature detection apparatus which detects the temperature of a charging battery, it is not restricted to this.

二次電池パック８は、充電電池１１、充電電池１２、充電器に装着するための二次電池パックの充電端子９、充電電池の充電・放電制御や各種保護機能を内蔵する二次電池パック制御ＩＣ１０、充電電池の温度を検出するサーミスタ１３で構成されており、二次電池パック制御ＩＣ１０は充電電池１１、充電電池１２のそれぞれの電圧も検出している。   The secondary battery pack 8 includes a rechargeable battery 11, a rechargeable battery 12, a rechargeable battery pack charging terminal 9 for attachment to a charger, a rechargeable battery charge / discharge control, and a secondary battery pack control incorporating various protection functions. The IC 10 includes a thermistor 13 that detects the temperature of the rechargeable battery. The secondary battery pack control IC 10 also detects the voltages of the rechargeable battery 11 and the rechargeable battery 12.

次に充電器１の構成について説明する。充電器１は充電電力を供給する電源供給回路２、充電制御を行う充電制御ＩＣ３、基準電圧を出力する基準電圧レギュレータ４、分圧抵抗５、充電電流を検出するための検出抵抗６、充電端子７で構成されている。   Next, the configuration of the charger 1 will be described. A charger 1 includes a power supply circuit 2 that supplies charging power, a charging control IC 3 that performs charging control, a reference voltage regulator 4 that outputs a reference voltage, a voltage dividing resistor 5, a detection resistor 6 that detects charging current, and a charging terminal 7.

充電端子７のうちの一つである信号用端子１４は、電池パック制御ＩＣ１０が充電電池１１および充電電池１２の電圧を検出し、その電圧のどちらか一方が充電電池を保護するための過電圧保護値を越えると送信する信号を受信する端子であり、充電制御ＩＣ３と接続されている。   The signal terminal 14, which is one of the charging terminals 7, detects overvoltage of the rechargeable battery 11 and the rechargeable battery 12 by the battery pack control IC 10, and either one of the voltages protects the rechargeable battery. This terminal receives a signal to be transmitted when the value is exceeded, and is connected to the charging control IC 3.

充電制御ＩＣ３は、充電電池１１および充電電池１２のトータル電圧、すなわち電池パックのプラスとマイナス間の電圧を定電圧で制御するための充電制御電圧１６の検出、定電流制御のために検出抵抗６によって充電電流１７の検出をしている。   The charge control IC 3 detects the total voltage of the rechargeable battery 11 and the rechargeable battery 12, that is, the detection resistance 6 for detecting the charge control voltage 16 for controlling the voltage between positive and negative of the battery pack with a constant voltage, and for controlling the constant current. Thus, the charging current 17 is detected.

また、二次電池パック８の温度により充電電流や充電制御電圧を変更するために、二次電池パック８に内蔵されているサーミスタ１３の抵抗値を充電端子７の端子を介して充電器で検出し、サーミスタ１３と分圧抵抗５により、基準電圧レギュレータ４の出力電圧を分圧し、この分圧値により、温度を検知している。また、充電制御ＩＣ３は、二次電池パック制御ＩＣ１０が充電電池を保護するための過電圧保護値を越えると送信する信号を受信し充電電流を低減するため、および、充電電池の温度が規定値を越えたことにより充電電流を低減するための切替用定電流回路１８も内蔵している。   Further, the resistance value of the thermistor 13 built in the secondary battery pack 8 is detected by the charger via the terminal of the charging terminal 7 in order to change the charging current and the charging control voltage depending on the temperature of the secondary battery pack 8. Then, the output voltage of the reference voltage regulator 4 is divided by the thermistor 13 and the voltage dividing resistor 5, and the temperature is detected by the divided value. In addition, the charging control IC 3 receives a signal to be transmitted when the secondary battery pack control IC 10 exceeds an overvoltage protection value for protecting the charging battery to reduce the charging current, and the temperature of the charging battery reaches a specified value. A switching constant current circuit 18 for reducing the charging current due to exceeding is also incorporated.

本充電器１は、二次電池パック８が充電器１に接続され、充電制御ＩＣ３がサーミスタ１３と分圧抵抗５により基準電圧レギュレータ４の出力電圧を分圧した電圧を検出することにより、装着された二次電池パック８の充電を開始する。   The charger 1 is mounted by connecting the secondary battery pack 8 to the charger 1 and detecting a voltage obtained by dividing the output voltage of the reference voltage regulator 4 by the thermistor 13 and the voltage dividing resistor 5 by the charging control IC 3. Charging of the secondary battery pack 8 is started.

充電が進むと、充電電池１１および充電電池１２の電池電圧は上昇していくが、充電電池１１および充電電池１２の個々の電圧を二次電池パック制御ＩＣ１０にて検出し、検出された電圧値のどちらか一方が、二次電池パック制御ＩＣ１０内で設定された過電圧保護値に到達した時、二次電池パック制御ＩＣ１０は信号端子１４を介し、充電器１へ充電電池１１あるいは充電電池１２が過電圧保護電圧に到達した事を信号により送信する。充電器１は、その信号を受信すると、充電制御電圧１６を低減させる事により、充電電池の電圧値を下げる。このように二次電池パック８と充電器１の通信で充電電流を低減し、充電電池の個々の電圧が二次電池パック制御ＩＣ１０で設定された過電圧保護値を越えない様に制御する事が可能となる。   As charging progresses, the battery voltages of the rechargeable battery 11 and the rechargeable battery 12 rise, but the individual voltages of the rechargeable battery 11 and the rechargeable battery 12 are detected by the secondary battery pack control IC 10, and the detected voltage value When either of the battery packs reaches the overvoltage protection value set in the secondary battery pack control IC 10, the secondary battery pack control IC 10 sends the rechargeable battery 11 or the rechargeable battery 12 to the charger 1 via the signal terminal 14. A signal is sent that the overvoltage protection voltage has been reached. When the charger 1 receives the signal, the charger 1 lowers the voltage value of the rechargeable battery by reducing the charge control voltage 16. In this way, the charging current is reduced by communication between the secondary battery pack 8 and the charger 1, and control is performed so that each voltage of the charging battery does not exceed the overvoltage protection value set by the secondary battery pack control IC 10. It becomes possible.

さらに、前述した制御を繰り返し、段階的に充電電流を低減させて、充電電池１１および充電電池１２が過電圧保護値を越えない様に、電池の容量を上昇させていく事によって、充電している二次電池パックの充電容量値を十分に確保する事が可能となる。この様子を示した図が図２である。   Further, the above-described control is repeated, the charging current is gradually reduced, and charging is performed by increasing the capacity of the battery so that the rechargeable battery 11 and the rechargeable battery 12 do not exceed the overvoltage protection value. It is possible to secure a sufficient charge capacity value of the secondary battery pack. FIG. 2 shows this state.

また、二次電池パック８に搭載されているサーミスタ１３の温度を検出する事により、充電器１の充電制御電圧値を可変する事ができる。   Further, the charge control voltage value of the charger 1 can be varied by detecting the temperature of the thermistor 13 mounted on the secondary battery pack 8.

図３は、上述した制御方法の温度と充電制御電圧値のプロファイルである。充電装置は、充電電池の温度が４５℃以下では、８．４００Ｖで充電制御を行い、充電電池の温度が４５℃〜５０℃では８．２００Ｖで充電制御を行い、５０℃以上では８．１００Ｖで充電制御を行う。この制御により、充電電池の温度によって充電制御電圧を変化させることができる為、４５℃以上でも充電を行う事が可能となる。   FIG. 3 is a profile of the temperature and charge control voltage value of the control method described above. The charging device performs charge control at 8.400 V when the temperature of the rechargeable battery is 45 ° C. or lower, performs charge control at 8.200 V when the temperature of the rechargeable battery is 45 ° C. to 50 ° C., and 8.100 V at 50 ° C. or higher. To control charging. By this control, the charge control voltage can be changed according to the temperature of the rechargeable battery, so that charging can be performed even at 45 ° C. or higher.

また、充電電池の発熱を抑制するため、二次電池パック８に搭載されているサーミスタ１３の温度を検出する事によっても充電電流を可変させる。この様子を示した図が図４である。充電電池の温度が高温になると充電電流を低減し、充電電池の温度上昇を抑制することができる。   Further, in order to suppress the heat generation of the rechargeable battery, the charge current is also varied by detecting the temperature of the thermistor 13 mounted on the secondary battery pack 8. FIG. 4 shows this state. When the temperature of the rechargeable battery becomes high, the charging current can be reduced and the temperature rise of the rechargeable battery can be suppressed.

充電電池の個々の電圧が二次電池パック制御ＩＣ１０で設定された過電圧保護値を越えない様に低減する充電電流の切替定電流回路と充電電池の温度が高温にならないように低減する充電電流の切替定電流回路を充電制御ＩＣ３に内蔵されている切替用定電圧回路１８で共用することにより、簡単で安価な回路を実現している。   A charging current switching constant current circuit that reduces the individual voltage of the rechargeable battery so as not to exceed the overvoltage protection value set by the secondary battery pack control IC 10 and a charging current that is reduced so that the temperature of the rechargeable battery does not become high. A simple and inexpensive circuit is realized by sharing the switching constant current circuit with the switching constant voltage circuit 18 built in the charging control IC 3.

（実施の形態２）
上記実施例では、充電電池１１あるいは充電電池１２が設定された過電圧保護値を越えたことを二次電池パック制御ＩＣ１０が検出し、送信した信号を信号用端子１４を介して充電器１は充電電池が過電圧保護値を越えたことを検出したが、サーミスタ１３を短絡するスイッチを追加し、充電電池１１あるいは充電電池１２が過電圧保護値を越えたことを検出し、二次電池パック８内部のサーミスタショートスイッチ１５を短絡する事により、充電器１へ充電電池の電圧が過電圧保護電圧に到達した事を伝達する事も可能である。これが請求項２記載の内容であり、その実施形態を示したのが図５である。充電器１の充電制御ＩＣ３は、サーミスタ１３が短絡したことを検出し、充電制御電圧１６を低減させる事によって、充電電池の電圧値を下げる。 (Embodiment 2)
In the above embodiment, the secondary battery pack control IC 10 detects that the rechargeable battery 11 or the rechargeable battery 12 has exceeded the set overvoltage protection value, and the charger 1 charges the transmitted signal via the signal terminal 14. Although it has been detected that the battery has exceeded the overvoltage protection value, a switch for short-circuiting the thermistor 13 is added to detect that the rechargeable battery 11 or the rechargeable battery 12 has exceeded the overvoltage protection value. By short-circuiting the thermistor short switch 15, it is also possible to transmit to the charger 1 that the voltage of the rechargeable battery has reached the overvoltage protection voltage. This is the content of the second aspect, and FIG. 5 shows an embodiment thereof. The charging control IC 3 of the charger 1 detects that the thermistor 13 is short-circuited, and reduces the charging control voltage 16, thereby reducing the voltage value of the charging battery.

このように二次電池パック８のサーミスタ１３の短絡を充電器１が検出する事によって充電器１は充電電流を低減し、充電電池の個々の電圧を二次電池パック制御ＩＣ１０内部で設定された過電圧保護値を越えない様に制御する事が可能となる。   Thus, when the charger 1 detects the short circuit of the thermistor 13 of the secondary battery pack 8, the charger 1 reduces the charging current, and the individual voltage of the charging battery is set inside the secondary battery pack control IC 10. It is possible to control so as not to exceed the overvoltage protection value.

さらに、前述した制御を繰り返し、段階的に充電電流を低減させて、単電池電圧が過電圧保護値を越えない様に、電池の容量を上昇させていく事によって、信号用追加端子１４を追加する事なく、充電している二次電池パックの充電容量値を、十分に確保する事が可能となる。この実施例においても充電電池の個々の電圧を二次電池パック制御ＩＣ１０で設定された過電圧保護値を越えない様に低減する充電電流の切替用回路と充電電池の温度が高温にならないように低減する充電電流の切替用回路を充電制御ＩＣ３に内蔵されている切替用定電圧回路１８で共用することにより、簡単で安価な回路を実現することができる。   Further, the above-described control is repeated, and the charging current is reduced stepwise to increase the battery capacity so that the unit cell voltage does not exceed the overvoltage protection value, thereby adding the signal additional terminal 14. It is possible to ensure a sufficient charge capacity value of the secondary battery pack being charged. Also in this embodiment, the charging voltage switching circuit for reducing the individual voltage of the charging battery so as not to exceed the overvoltage protection value set by the secondary battery pack control IC 10 and the charging battery temperature are reduced so as not to become high. By sharing the switching circuit for switching the charging current with the switching constant voltage circuit 18 built in the charging control IC 3, a simple and inexpensive circuit can be realized.

本発明により、電気用品安全法にリチウムイオン電池に関して追加される新たな技術基準を満たしながらも二次電池パックの充電容量を十分に確保する事ができる。同時に、充電電池の発熱を抑え、発熱による充電電池の劣化を抑える充電装置を提供することができる。また、充電電池の電圧値を下げるために充電電流を低減する切替用定電流回路と充電電池の温度下げるために充電電流を低減する切替用定電流回路を共用することにより、簡単で安価な回路を提供することができる。   According to the present invention, the charging capacity of the secondary battery pack can be sufficiently ensured while satisfying the new technical standard added to the lithium ion battery in the Electrical Appliance and Material Safety Law. At the same time, it is possible to provide a charging device that suppresses heat generation of the rechargeable battery and suppresses deterioration of the rechargeable battery due to heat generation. In addition, the switching constant current circuit that reduces the charging current in order to lower the voltage value of the charging battery and the switching constant current circuit that reduces the charging current in order to lower the temperature of the charging battery share a simple and inexpensive circuit. Can be provided.

１ 充電器
２ 電源供給回路
３ 充電制御ＩＣ
４ 基準電圧レギュレータ
５ 分圧抵抗
６ 検出抵抗
７ 充電端子
８ 二次電池パック
９ 二次電池パックの充電端子
１０ 二次電池パック制御ＩＣ
１１ 充電電池１１
１２ 充電電池１２
１３ サーミスタ
１４ 信号用端子
１５ サーミスタショートスイッチ
１６ 充電制御電圧
１７ 充電電流
１８ 切替用定電流回路 1 Charger 2 Power Supply Circuit 3 Charge Control IC
4 Reference Voltage Regulator 5 Voltage Dividing Resistance 6 Detection Resistance 7 Charging Terminal 8 Secondary Battery Pack 9 Secondary Battery Pack Charging Terminal 10 Secondary Battery Pack Control IC
11 Rechargeable battery 11
12 Rechargeable battery 12
13 Thermistor 14 Signal Terminal 15 Thermistor Short Switch 16 Charging Control Voltage 17 Charging Current 18 Switching Constant Current Circuit

Claims (2)

複数の充電電池を組み合わせた電池群と前記電池群の温度を検出する温度検出装置と前記充電電池の個々の電圧値および前記温度検出装置により検出した温度を検出し、前記電池群の充電や放電を制御する電池パック制御ＩＣを備える二次電池パックと、この二次電池パックを充電端子により接続し、電源供給回路からの電力を充電制御ＩＣによって制御しながら二次電池パックを充電する充電器からなる充電装置において、前記二次電池パックの温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電電池を保護するための過電圧保護値を可変し、また、前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことを検知した前記電池パック制御ＩＣは信号を充電器の充電制御ＩＣに通信し、この信号によって充電器の充電電流を切り替える切替用定電流回路を充電制御ＩＣに設け、また、前記温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電器の充電電流を切り替える切替用定電流回路を設け、さらに前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことにより充電電流を切り替える切替用定電流回路と前記検出した温度に応じて充電電流を切り替える切替用定電流回路を同一の回路で実現する事を特徴とした充電装置。   A battery group in which a plurality of rechargeable batteries are combined, a temperature detecting device for detecting the temperature of the battery group, an individual voltage value of the charging battery and a temperature detected by the temperature detecting device, and charging and discharging of the battery group A battery pack that includes a battery pack control IC that controls the battery pack, and a charger that connects the secondary battery pack with a charging terminal and charges the secondary battery pack while controlling the power from the power supply circuit with the charge control IC The charging control IC of the charger detects the temperature detected by the temperature detection device of the secondary battery pack, and varies the overvoltage protection value for protecting the charging battery according to the detected temperature, Further, the battery pack control IC that has detected that the voltage value of any of the rechargeable batteries in the battery group has reached a specified voltage communicates a signal to the charge control IC of the charger. A switching constant current circuit for switching the charging current of the charger according to this signal is provided in the charging control IC, and the temperature detected by the temperature detection device is detected by the charging control IC of the charger and charged according to the detected temperature. A switching constant current circuit for switching the charging current of the battery, and a switching constant current circuit for switching the charging current when the voltage value of any charging battery in the battery group reaches a specified voltage and the detected temperature A charging device characterized in that a switching constant current circuit for switching a charging current according to the same circuit is realized by the same circuit. 複数の充電電池を組み合わせた電池群と前記電池群の温度を検出する温度検出装置と前記充電電池の個々の電圧値および前記温度検出装置により検出した温度を検出し、前記電池群の充電や放電を制御する電池パック制御ＩＣと前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことを検知した電池パック制御ＩＣからの信号により前期温度検出装置を短絡するスイッチを備える二次電池パックと、この二次電池パックを充電端子により接続し、電源供給回路からの電力を充電制御ＩＣによって制御しながら二次電池パックを充電する充電器からなる充電装置において、前記二次電池パックの温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電電池を保護するための過電圧保護値を可変し、また、前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことを検知した電池パック制御ＩＣは前期温度検出装置を短絡するスイッチを短絡し、充電器は前記温度検出装置が短絡されたことを検知することによって充電器の充電電流を切り替える切替用定電流回路を充電制御ＩＣに設け、また、前記温度検出装置により検出した温度を充電器の充電制御ＩＣが検知し、検出した温度に応じて充電器の充電電流を切り替える切替用定電流回路を設け、さらに前記電池群のいずれかの充電電池の電圧値が規定電圧に到達したことにより充電電流を切り替える切替用定電流回路と前記検出した温度に応じて充電電流を切り替える切替用定電流回路を同一の回路で実現する事を特徴とした請求項１記載の充電装置。   A battery group in which a plurality of rechargeable batteries are combined, a temperature detecting device for detecting the temperature of the battery group, an individual voltage value of the charging battery and a temperature detected by the temperature detecting device, and charging and discharging of the battery group A battery pack control IC that controls the battery and a switch that short-circuits the previous temperature detection device according to a signal from the battery pack control IC that has detected that the voltage value of any of the rechargeable batteries in the battery group has reached a specified voltage. In a charging device comprising a battery pack and a charger that connects the secondary battery pack with a charging terminal and charges the secondary battery pack while controlling power from a power supply circuit by a charge control IC, the secondary battery pack The charger's charge control IC detects the temperature detected by the temperature detector, and an overvoltage protection value is available to protect the rechargeable battery according to the detected temperature. Further, the battery pack control IC that detects that the voltage value of any one of the battery groups in the battery group has reached a specified voltage short-circuits a switch that short-circuits the temperature detection device in the previous period, and a charger is connected to the temperature detection device. The charging control IC is provided with a switching constant current circuit for switching the charging current of the charger by detecting that the battery is short-circuited, and the charging control IC of the charger detects the temperature detected by the temperature detection device, A switching constant current circuit for switching the charging current of the charger according to the detected temperature is provided, and the switching constant current for switching the charging current when the voltage value of any charging battery in the battery group reaches a specified voltage. The charging device according to claim 1, wherein the switching constant current circuit for switching the charging current according to the circuit and the detected temperature is realized by the same circuit.
JP2011075044A 2011-03-30 2011-03-30 Charging apparatus Withdrawn JP2012210113A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011075044A JP2012210113A (en) 2011-03-30 2011-03-30 Charging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011075044A JP2012210113A (en) 2011-03-30 2011-03-30 Charging apparatus

Publications (1)

Publication Number Publication Date
JP2012210113A true JP2012210113A (en) 2012-10-25

Family

ID=47189405

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011075044A Withdrawn JP2012210113A (en) 2011-03-30 2011-03-30 Charging apparatus

Country Status (1)

Country Link
JP (1) JP2012210113A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150009595A1 (en) * 2013-07-03 2015-01-08 Honda Motor Co., Ltd. Abnormality detection device
WO2018190260A1 (en) 2017-04-14 2018-10-18 株式会社村田製作所 Charging device, charging method, secondary battery, battery pack, electric vehicle, electricity storage device, electronic device, and electricity storage system
CN110994734A (en) * 2019-12-23 2020-04-10 广州极飞科技有限公司 Battery charging method and device and electronic auxiliary equipment

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150009595A1 (en) * 2013-07-03 2015-01-08 Honda Motor Co., Ltd. Abnormality detection device
CN104280627A (en) * 2013-07-03 2015-01-14 本田技研工业株式会社 Abnormality detection device
JP2015015799A (en) * 2013-07-03 2015-01-22 本田技研工業株式会社 Abnormality detection device
US9527396B2 (en) 2013-07-03 2016-12-27 Honda Motor Co., Ltd. Abnormality detection device
CN104280627B (en) * 2013-07-03 2018-01-02 本田技研工业株式会社 Abnormal detector
WO2018190260A1 (en) 2017-04-14 2018-10-18 株式会社村田製作所 Charging device, charging method, secondary battery, battery pack, electric vehicle, electricity storage device, electronic device, and electricity storage system
CN110994734A (en) * 2019-12-23 2020-04-10 广州极飞科技有限公司 Battery charging method and device and electronic auxiliary equipment
CN110994734B (en) * 2019-12-23 2022-01-14 广州极飞科技股份有限公司 Battery charging method and device and electronic auxiliary equipment

Similar Documents

Publication Publication Date Title
JP3183420U (en) Portable wireless charger
JP5547342B2 (en) Advanced storage battery system
US20160200214A1 (en) Battery pack and electric vehicle
US20140370940A1 (en) Battery control system, battery pack, electronic device and charger
US20130187611A1 (en) Cell voltage equalizer for multi-cell battery pack
JP5488877B2 (en) Electric tool
JP2013201890A (en) Battery pack
KR20160099357A (en) Battery pack and battery system including the same
KR20140048737A (en) Battery pack and method of controlling the battery pack
KR20170013537A (en) An energy storage and control system having battery management and communication function
US20150236538A1 (en) Mobile Device Case with Fast Charging Battery Pack
JP2015532575A (en) Circuit for managing battery charging
JP2011250628A (en) Secondary battery protection circuit and hybrid power supply device
US20140159664A1 (en) Method of manufacturing battery pack and battery pack
EP3160002B1 (en) Active equalizing charging device
KR20180051732A (en) A Hybrid Method with Serial and Parallel Charging Technologies for Balanced Charging of EV Batteries
KR102472906B1 (en) Battery Pack and Electric Vehicle Including The Same
KR102564716B1 (en) Battery management system and method for protecting a battery from over-discharge
JP2014171323A (en) Cell balance device
JP2010252505A (en) Charger
JP2012210113A (en) Charging apparatus
JP5165405B2 (en) Charge control circuit, battery pack, and charging system
KR20170022778A (en) Charging method of battery and battery pack thereof
JP2008259386A (en) Battery protection circuit and battery pack
CN201307774Y (en) Charging-discharging separated protection device

Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20140603