JP7139599B2 - charging controller - Google Patents

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JP7139599B2
JP7139599B2 JP2017240670A JP2017240670A JP7139599B2 JP 7139599 B2 JP7139599 B2 JP 7139599B2 JP 2017240670 A JP2017240670 A JP 2017240670A JP 2017240670 A JP2017240670 A JP 2017240670A JP 7139599 B2 JP7139599 B2 JP 7139599B2
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康 林田
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Toppan Inc
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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
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Description

本発明は、リチウムイオン電池を一定の電流で所定電圧まで充電する定電流制御と、その後前記所定電圧を保持しつつ、前記電流を減少させながら前記リチウムイオン２次電池を充電する定電圧制御とを実施するリチウムイオン電池充電制御回路を有するリチウムイオン電池保有機器のリチウムイオン電池の充電制御装置に関する。
The present invention provides constant current control for charging a lithium ion battery to a predetermined voltage with a constant current, and constant voltage control for charging the lithium ion secondary battery while maintaining the predetermined voltage and decreasing the current thereafter. The present invention relates to a charging control device for a lithium-ion battery of a lithium-ion battery-equipped device having a lithium-ion battery charging control circuit that implements the above.

スマートフォンやタブレットなどのリチウムイオン電池保有機器はリチウム電池（２次電池）を搭載しており、毎回使用後、充電によって、再使用をしている。 Devices with lithium-ion batteries, such as smartphones and tablets, are equipped with lithium batteries (secondary batteries), which are reused by charging after each use.

図３のように、スマートフォンやタブレットなどのリチウムイオン電池保有機器３００の充電部はリチウムイオン電池３６０とリチウムイオン電池充電制御回路３７０を有しており、図４で示されるように、リチウムイオン電池充電制御回路３７０は定電流定電圧（ＣＣＣＶ：Constant Current Constant Voltage）方式の充電制御すなわち、リチウムイオン電池３６０を一定の電流で所定電圧まで充電する定電流（ＣＣ：Constant Current）充電と、その後前記所定電圧を保持しつつ、前記電流を減少させながらリチウムイオン電池３６０を充電する定電圧（ＣＶ：Constant Voltage）充電を行う（特許文献１参照）。 As shown in FIG. 3, a charging unit of a device 300 with a lithium ion battery such as a smartphone or a tablet has a lithium ion battery 360 and a lithium ion battery charging control circuit 370. As shown in FIG. The charging control circuit 370 performs constant current constant voltage (CCCV) charging control, that is, constant current (CC) charging for charging the lithium ion battery 360 to a predetermined voltage at a constant current, and then Constant voltage (CV) charging is performed to charge the lithium ion battery 360 while maintaining a predetermined voltage and decreasing the current (see Patent Document 1).

スマートフォンやタブレットなどのリチウムイオン電池保有機器を、長時間固定電源に接続を維持した上で使用する用途の時に、定電流定電圧方式による充電では、定電流制御（ＣＣ）の後定電圧制御（ＣＶ）により、じょじょに電流が下がり所定の電流値に達したら充電を止めるようになっていても、充電と充電停止が繰り返され、充電回数が増え、リチウムイオン電池の容量の低下と短い寿命を招いていた。 When using devices with lithium-ion batteries such as smartphones and tablets that are connected to a fixed power supply for a long time, constant current control (CC) followed by constant voltage control ( With CV), even if the current gradually decreases and stops charging when it reaches a predetermined current value, charging and charging stop are repeated, increasing the number of charging times, reducing the capacity and shortening the life of the lithium-ion battery. was

特許第３１５２５１２号公報Japanese Patent No. 3152512

本発明は、スマートフォンやタブレットなどのリチウムイオン電池保有機器を長時間固定電源に接続を維持した後で使用する時に、リチウムイオン電池の容量の低下と寿命を先のばしにするように、機器内のリチウムイオン電池の過充電や過放電をさけ、充電回数を減らすことができる充電制御装置を提供することを目的する。 The present invention is to prevent the deterioration of the capacity and life of the lithium-ion battery when using the device with a lithium-ion battery, such as a smartphone or tablet, after maintaining a connection to a fixed power supply for a long time. It is an object of the present invention to provide a charging control device capable of avoiding overcharging and overdischarging of a lithium ion battery and reducing the number of times of charging.

本発明は上記課題を解決するためになされたもので、請求項１に係る発明は、リチウムイオン電池を一定の電流で所定電圧まで充電する定電流制御と、その後前記所定電圧を保持しつつ、前記電流を減少させながら前記リチウムイオン電池を充電する定電圧制御とを実施するリチウムイオン電池充電制御回路を有するリチウムイオン電池保有機器のリチウムイオン電池の充電制御装置であって、充電用給電部と前記リチウムイオン電池保有機器の間に接続され、リチウムイオン電池保有機器への電流を測定する電流測定部とリチウムイオン電池保有機器の充電用端子間の電圧を測定する電圧測定部と、前記充電用給電部と、前記リチウムイオン電池保有機器との間の電気的接続を断接する断接部と、制御部と、を備え、前記制御部は、前記断接部で接続動作（充電）を開始した後、電流測定部での電流計測により、定電流充電から定電圧充電への切り替わりを検知して、前記断接部に遮断動作（充電停止）を指示する操作と、前記接続動作（充電）の開始から一定時間経過するまでに、前記定電流充電から前記定電圧充電への切り替わりを検知しなかった場合、断接部に遮断動作（充電停止）を指示する操作と、前記充電停止時から、一定時間毎に前記電圧測定部により充電電圧を計測し、設定電圧以上であった場合は、充電停止を継続し、設定電圧以下を検出した際に、前記断接部に、接続動作（充電）を指示する操作を行うことを特徴とする充電制御装置である。
The present invention has been made to solve the above problems, and the invention according to claim 1 is a constant current control that charges a lithium ion battery with a constant current to a predetermined voltage, and then, while maintaining the predetermined voltage, A charging control device for a lithium ion battery in a device equipped with a lithium ion battery, the charging control device comprising: a lithium ion battery charging control circuit for performing constant voltage control for charging the lithium ion battery while reducing the current; a current measuring unit connected between the lithium ion battery-equipped device and measuring a current to the lithium ion battery-equipped device; a voltage measuring unit for measuring a voltage between charging terminals of the lithium ion battery-equipped device; A power supply unit, a connecting/disconnecting unit for connecting/disconnecting an electrical connection between the lithium-ion battery-equipped device , and a control unit, wherein the control unit starts a connection operation (charging) at the disconnecting/disconnecting unit. After that, the switching from constant current charging to constant voltage charging is detected by current measurement in the current measuring unit, and an operation of instructing the breaking operation (charging stop) to the disconnecting unit and the connecting operation ( charging ) are performed. If switching from the constant current charging to the constant voltage charging is not detected within a certain period of time from the start, an operation of instructing the disconnecting unit to perform a disconnection operation (stop charging), and from the time of stopping charging, The charging voltage is measured by the voltage measuring unit at regular intervals, and if the voltage is equal to or higher than the set voltage, the charging is continued to be stopped. It is a charging control device characterized by performing an operation of instructing.

請求項２に係る発明は、リチウムイオン電池保有機器のリチウムイオン電池の充電開始からの充電時間が所定の制限時間に達したら、前記断接部に遮断動作（充電停止）を指示する操作を行うことを特徴とする請求項１記載の充電制御装置である。 In the invention according to claim 2, when the charging time from the start of charging of the lithium-ion battery of the lithium-ion battery-equipped device reaches a predetermined time limit, an operation is performed to instruct the disconnection/disconnection unit to perform a disconnection operation (stop charging). The charging control device according to claim 1, characterized in that:

請求項３に係る発明は、請求項１または請求項２記載の充電制御装置と充電用給電部からなる充電装置である。 The invention according to claim 3 is a charging device comprising the charging control device according to claim 1 or claim 2 and a charging power supply unit.

本発明は、スマートフォンやタブレットなどのリチウムイオン電池保有機器を長時間固定電源に接続を維持した後で使用する時に、リチウムイオン電池の容量の低下と寿命を先のばしにするように、機器内のリチウムイオン電池の過充電や過放電をさけ、充電回数を減らすことが可能な充電制御装置を提供することができる。 The present invention is to prevent the deterioration of the capacity and life of the lithium-ion battery when using the device with a lithium-ion battery, such as a smartphone or tablet, after maintaining a connection to a fixed power supply for a long time. It is possible to provide a charging control device capable of avoiding overcharging and overdischarging of a lithium ion battery and reducing the number of times of charging.

本発明の実施形態における充電制御装置の概略構成を示すブロック図である。1 is a block diagram showing a schematic configuration of a charging control device according to an embodiment of the invention; FIG. 本発明の実施形態における充電装置の概略構成を示すブロック図である。1 is a block diagram showing a schematic configuration of a charging device according to an embodiment of the invention; FIG. 従来のリチウムイオン電池保有機器に対する充電用給電部からの給電における装置構成を示すブロック図である。FIG. 10 is a block diagram showing a device configuration in power feeding from a charging power feeding unit to a conventional lithium-ion battery-equipped device; 図３に示すリチウムイオン電池保有機器のリチウムイオン電池の充電動作を説明する図である。FIG. 4 is a diagram for explaining the charging operation of the lithium ion battery of the lithium ion battery holding device shown in FIG. 3;

以下、本発明の実施形態のカード発行装置について添付図面を参照して説明する。 A card issuing device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

図１は本発明の実施形態における充電制御装置の概略構成を示すブロック図である。 FIG. 1 is a block diagram showing a schematic configuration of a charging control device according to an embodiment of the invention.

充電制御装置１００は、リチウムイオン電池３６０を一定の電流で所定電圧まで充電する定電流制御と、その後前記所定電圧を保持しつつ、前記電流を減少させながらリチウムイオン電池３６０を充電する定電圧制御とを実施するリチウムイオン電池充電制御回路３７０を有するリチウムイオン電池保有機器３００と、充電用給電部４００の間に設置される。 The charging control device 100 performs constant current control to charge the lithium ion battery 360 with a constant current to a predetermined voltage, and then constant voltage control to charge the lithium ion battery 360 while maintaining the predetermined voltage and decreasing the current. and the lithium ion battery holding device 300 having a lithium ion battery charging control circuit 370 that implements the above and the charging power supply section 400 .

充電制御装置１００はリチウムイオン電池３６０の充電制御装置であって、リチウムイオン電池保有機器３００への電流Ｉを測定する電流測定部２０と、リチウムイオン電池保有機器の充電用端子間の電圧を測定する電圧測定部１０と、充電用給電部４００とリチウムイオン電池保有機器３００との間の電気的接続を断接する断接部３０と、制御部４０と、を備える。
The charging control device 100 is a charging control device for the lithium-ion battery 360, and includes a current measuring unit 20 that measures the current I to the lithium-ion battery-equipped device 300, and a voltage between charging terminals of the lithium-ion battery-equipped device. a voltage measuring unit 10 for charging, a connecting/disconnecting unit 30 for disconnecting/disconnecting electrical connection between the charging power supply unit 400 and the device 300 containing the lithium ion battery, and a control unit 40 .

断接部３０は、スイッチング素子を使用したスイッチング回路でもよい。 The disconnecting unit 30 may be a switching circuit using a switching element.

制御部４０は、断接部３０で接続動作（充電）を開始した後、電流測定部２０での電流計測により、定電流充電から定電圧充電への切り替わり（図４におけるタイミングＴ２に相当）を検知して、断接部３０に遮断動作（充電停止）を指示する操作を行う。
After the connection operation (charging) is started by the connecting/disconnecting unit 30, the control unit 40 switches from constant current charging to constant voltage charging (corresponding to timing T2 in FIG. 4) by current measurement by the current measuring unit 20. It is detected, and an operation is performed to instruct the connection/disconnection unit 30 to perform a disconnection operation (stop charging).

前記接続動作（充電）の開始から一定時間経過するまでに、前記定電流充電から前記定電圧充電への切り替わりを検知しなかった場合、断接部３０に遮断動作（充電停止）を指示する操作を行う。 An operation of instructing the connection/disconnection unit 30 to perform a disconnection operation (stop charging) when switching from the constant current charging to the constant voltage charging is not detected within a certain period of time from the start of the connection operation ( charging ). I do.

また、制御部４０は、充電停止時から、一定時間毎に電圧測定部１０により充電電圧Ｖを計測し、設定電圧以上であった場合は、充電停止を継続し、設定電圧以下であった場合は、断接部３０に、接続動作（充電）を指示する操作を行う。 In addition, the control unit 40 measures the charging voltage V by the voltage measuring unit 10 at regular time intervals after the charging is stopped. performs an operation of instructing the connection operation (charging) to the connection/disconnection unit 30 .

また、また、制御部４０は、リチウムイオン電池保有機器３００のリチウムイオン電池３６０の充電開始からの充電時間が所定の制限時間に達したら、断接部３０に遮断動作（充電停止）を指示する操作を行うことをしてもよい。これは安全として、総充電時間が、所定の時間以上にならないようにするためである。 Further, when the charging time from the start of charging of the lithium ion battery 360 of the lithium ion battery-equipped device 300 reaches a predetermined time limit, the control unit 40 instructs the connection/disconnection unit 30 to perform a disconnection operation (stop charging). You may perform an operation. This is to ensure that the total charging time does not exceed a predetermined time as a safety measure.

図２は本発明の実施形態における充電装置２００の概略構成を示すブロック図である。 FIG. 2 is a block diagram showing a schematic configuration of the charging device 200 according to the embodiment of the invention.

充電制御装置１００は充電用給電部４００と一体化して充電装置２００となってもよい。 Charging control device 100 may be integrated with charging power supply unit 400 to form charging device 200 .

以上の装置と動作によって、リチウムイオン電池を一定の電流で所定電圧まで充電する定電流制御と、その後前記所定電圧を保持しつつ、前記電流を減少させながら前記リチウムイオン電池を充電する定電圧制御とを実施するリチウムイオン電池充電制御回路を有するリチウムイオン電池保有機器たとえばスマートフォンやタブレットなどを、長時間固定電源に接続を維持した上で使用する用途の時に、従来より、充電時の充電回数が減少し、過充電や過放電を回避でき、リチウムイオン電池の容量の低下と短命化を回避できた。 With the above device and operation, constant current control for charging the lithium ion battery to a predetermined voltage with a constant current, and constant voltage control for charging the lithium ion battery while maintaining the predetermined voltage and decreasing the current thereafter. When using lithium-ion battery-equipped devices such as smartphones and tablets that have a lithium-ion battery charge control circuit that implements It can avoid overcharging and overdischarging, avoiding the decrease in capacity and shortening of the life of the lithium-ion battery.

１０・・・電圧測定部
２０・・・電流測定部
３０・・・断接部
４０・・・制御部
１００・・・充電制御装置
２００・・・充電装置
３００・・・リチウムイオン電池保有機器
３６０・・・リチウムイオン電池
３７０・・・リチウムイオン電池充電制御回路
４００・・・充電用給電部 DESCRIPTION OF SYMBOLS 10... Voltage measurement part 20... Current measurement part 30... Disconnection part 40... Control part 100... Charging control apparatus 200... Charging apparatus 300... Lithium ion battery holding apparatus 360 Lithium-ion battery 370 Lithium-ion battery charging control circuit 400 Charging power supply unit

Claims (3)

リチウムイオン電池を一定の電流で所定電圧まで充電する定電流制御と、その後前記所定電圧を保持しつつ、前記電流を減少させながら前記リチウムイオン電池を充電する定電圧制御とを実施するリチウムイオン電池充電制御回路を有するリチウムイオン電池保有機器のリチウムイオン電池の充電制御装置であって、
充電用給電部と前記リチウムイオン電池保有機器の間に接続され、
リチウムイオン電池保有機器への電流を測定する電流測定部と
リチウムイオン電池保有機器の充電用端子間の電圧を測定する電圧測定部と、
前記充電用給電部と、前記リチウムイオン電池保有機器との間の電気的接続を断接する断接部と、
制御部と、を備え、
前記制御部は、前記断接部で接続動作（充電）を開始した後、電流測定部での電流計測により、定電流充電から定電圧充電への切り替わりを検知した場合、前記断接部に遮断動作（充電停止）を指示する操作と、
前記接続動作（充電）の開始から一定時間経過するまでに、前記定電流充電から定電圧充電への切り替わりを検知しなかった場合、前記断接部に遮断動作（充電停止）を指示する操作と、
前記充電停止時から、一定時間毎に前記電圧測定部により充電電圧を計測し、設定電圧以上であった場合は、充電停止を継続し、設定電圧以下を検出した際に、前記断接部に、接続動作（充電）を指示する操作を行うことを特徴とする充電制御装置。 A lithium ion battery that performs constant current control for charging the lithium ion battery with a constant current to a predetermined voltage, and then constant voltage control for charging the lithium ion battery while maintaining the predetermined voltage and decreasing the current. A charging control device for a lithium-ion battery of a lithium-ion battery-equipped device having a charging control circuit,
connected between a charging power source and the lithium-ion battery-equipped device ;
a current measuring unit that measures the current flowing into the lithium-ion battery-equipped device; a voltage measuring unit that measures the voltage between the charging terminals of the lithium-ion battery-equipped device;
a connecting/disconnecting portion that disconnects/disconnects an electrical connection between the charging power supply portion and the lithium-ion battery-equipped device ;
a control unit;
After starting the connection operation (charging) at the disconnecting/disconnecting unit, the current measurement unit detects a switch from constant current charging to constant voltage charging by current measurement. An operation to instruct an operation (stop charging);
an operation of instructing the breaking operation (charging stop) to the disconnecting/disconnecting unit if switching from the constant current charging to the constant voltage charging is not detected within a certain period of time from the start of the connecting operation ( charging ) ; ,
After the charging is stopped, the charging voltage is measured by the voltage measuring unit at regular intervals, and if the voltage is equal to or higher than the set voltage, the charging is continued. , a charging control device for performing an operation for instructing a connection operation (charging). 前記電池保有機器のリチウムイオン電池の前記接続動作（充電）の開始からの充電時間が所定の制限時間に達したら、前記断接部に遮断動作（充電停止）を指示する操作を行うことを特徴とする請求項１記載の充電制御装置。 When the charging time from the start of the connecting operation ( charging ) of the lithium-ion battery of the battery-equipped device reaches a predetermined time limit, an operation is performed to instruct the disconnecting/disconnecting unit to perform a disconnection operation (stop charging). 2. The charging control device according to claim 1. 請求項１または請求項２に記載の充電制御装置と充電用給電部からなる充電装置。
A charging device comprising the charging control device according to claim 1 or 2 and a charging power supply unit.
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