JP2021087320A - Charge control device, correction method of remaining battery capacity, and program - Google Patents

Charge control device, correction method of remaining battery capacity, and program Download PDF

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JP2021087320A
JP2021087320A JP2019216009A JP2019216009A JP2021087320A JP 2021087320 A JP2021087320 A JP 2021087320A JP 2019216009 A JP2019216009 A JP 2019216009A JP 2019216009 A JP2019216009 A JP 2019216009A JP 2021087320 A JP2021087320 A JP 2021087320A
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secondary battery
remaining amount
charging
charge control
output voltage
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繁樹 北村
Shigeki Kitamura
繁樹 北村
英男 鈴木
Hideo Suzuki
英男 鈴木
洋平 斉藤
Yohei Saito
洋平 斉藤
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Casio Computer 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
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Abstract

To further improve the accuracy of estimating the remaining capacity of a rechargeable battery.SOLUTION: A charge control device 10 includes a battery voltage measurement IC 132 that measures an output voltage of a secondary battery 150, a remaining capacity estimation unit 134 that estimates the remaining capacity of the secondary battery 150 from the output voltage measured by the battery voltage measurement IC 132, a charge control IC 131 that changes charge parameters when a state of charge of the secondary battery 150 satisfies predetermined conditions, and a first correction unit 112 that corrects a value of the remaining amount of the secondary battery 150 estimated when the predetermined condition is met.SELECTED DRAWING: Figure 1

Description

この発明は、充電制御装置、電池残量補正方法及びプログラムに関する。 The present invention relates to a charge control device, a battery level correction method and a program.

電子機器の電源として用いられている二次電池の充電方式として、例えば特許文献１に記載されているような充電方式を採用する場合、電池電圧計測ＩＣ（Ｉｎｔｅｇｒａｔｅｄ Ｃｉｒｃｕｉｔ）が計測した電圧に基づいて、二次電池の残量が推定される。しかし、二次電池の充放電が繰り返し行われたり、温度が変化したりすると、二次電池の出力電圧と残量との関係が変化するため、出力電圧に基づく残量の推定値には誤差が含まれる。従来、この誤差を軽減するために、二次電池が満充電になった時点での出力電圧の値により、残量の推定値の誤差を補正する方式が採用されていた。 When a charging method as described in Patent Document 1, for example, is adopted as a charging method for a secondary battery used as a power source for an electronic device, it is based on a voltage measured by a battery voltage measuring IC (Integrated Circuit). , The remaining battery level is estimated. However, when the secondary battery is repeatedly charged and discharged or the temperature changes, the relationship between the output voltage of the secondary battery and the remaining amount changes, so the estimated value of the remaining amount based on the output voltage is inaccurate. Is included. Conventionally, in order to reduce this error, a method has been adopted in which the error of the estimated value of the remaining amount is corrected by the value of the output voltage when the secondary battery is fully charged.

国際公開２０１７／２０８５８８号International Publication No. 2017/208588

しかし、二次電池の充電は途中までは高速に行われるが、その後は低速になることが多いので、ユーザによっては満充電されるのを待たずに充電を終了する場合も多い。この場合、上記の方式による補正処理が行われないため、二次電池の残量の推定値の誤差が補正されず、二次電池の残量の推定精度が落ちる。 However, although the secondary battery is charged at high speed halfway, it is often slow after that, so that some users often finish charging without waiting for it to be fully charged. In this case, since the correction process by the above method is not performed, the error of the estimated value of the remaining amount of the secondary battery is not corrected, and the estimation accuracy of the remaining amount of the secondary battery is lowered.

本発明は、上記実情に鑑みてなされたものであり、二次電池の残量の推定精度をより向上させることができる充電制御装置、電池残量補正方法及びプログラムを提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a charge control device, a battery remaining amount correction method, and a program capable of further improving the estimation accuracy of the remaining amount of the secondary battery. ..

上記目的を達成するため、本発明に係る充電制御装置は、
二次電池の出力電圧を計測する電圧計測部と、
前記電圧計測部が計測した前記出力電圧から前記二次電池の残量を推測する残量推測部と、
前記二次電池の充電状態が所定の条件を満たす場合に充電パラメータを変化させる充電制御部と、
前記所定の条件を満たす場合に前記推測した二次電池の残量の値を補正する第１補正部と、
を備える。 In order to achieve the above object, the charge control device according to the present invention is
A voltage measuring unit that measures the output voltage of the secondary battery,
A remaining amount estimation unit that estimates the remaining amount of the secondary battery from the output voltage measured by the voltage measuring unit, and
A charge control unit that changes the charge parameter when the charge state of the secondary battery satisfies a predetermined condition,
A first correction unit that corrects the estimated remaining amount of the secondary battery when the predetermined condition is satisfied, and
To be equipped.

本発明によれば、二次電池の残量の推定精度をより向上させることができる。 According to the present invention, the accuracy of estimating the remaining amount of the secondary battery can be further improved.

第１実施形態に係る充電制御装置の構成例を示す図である。It is a figure which shows the structural example of the charge control device which concerns on 1st Embodiment. 二次電池の出力電圧、温度及び電池残量の関係が記録されたテーブルの一例を示す図である。It is a figure which shows an example of the table which recorded the relationship between the output voltage, temperature and the remaining battery level of a secondary battery. 二次電池のＣＣＣＶ充電方式での出力電圧と充電時間との関係の一例を示すグラフである。It is a graph which shows an example of the relationship between the output voltage and the charging time in the CCCV charging system of a secondary battery. 二次電池の出力電圧と放電容量との関係の一例を示すグラフである。It is a graph which shows an example of the relationship between the output voltage of a secondary battery and the discharge capacity. 第１補正部が備える補正用データの一例を示す図である。It is a figure which shows an example of the correction data provided in the 1st correction part. 第１実施形態に係る残量補正処理のフローチャートである。It is a flowchart of the remaining amount correction processing which concerns on 1st Embodiment. 第２実施形態に係る充電制御装置の構成例を示す図である。It is a figure which shows the structural example of the charge control device which concerns on 2nd Embodiment. 第２実施形態に係る残量補正処理のフローチャートである。It is a flowchart of the remaining amount correction processing which concerns on 2nd Embodiment.

以下、実施形態について、図面を参照して説明する。なお、図中同一または相当部分には同一符号を付す。 Hereinafter, embodiments will be described with reference to the drawings. The same or corresponding parts in the figure are designated by the same reference numerals.

（第１実施形態）
第１実施形態に係る充電制御装置１０は、図１に示すように、ハードウェア構成として、マイクロコントローラ１００と、充電制御ＩＣ１３１と、電池電圧計測ＩＣ１３２と、温度センサ１３３と、を備える。そして、充電制御装置１０には、充電源１４０と二次電池１５０が接続され、充電制御ＩＣ１３１は、充電源１４０から電力を二次電池１５０に供給し、定電流定電圧（Ｃｏｎｓｔａｎｔ Ｃｕｒｒｅｎｔ Ｃｏｎｓｔａｎｔ Ｖｏｌｔａｇｅ：ＣＣＣＶ）充電方式により、二次電池１５０を充電する。 (First Embodiment)
As shown in FIG. 1, the charge control device 10 according to the first embodiment includes a microprocessor 100, a charge control IC 131, a battery voltage measurement IC 132, and a temperature sensor 133 as a hardware configuration. Then, the charging source 140 and the secondary battery 150 are connected to the charging control device 10, and the charging control IC 131 supplies power from the charging source 140 to the secondary battery 150 to obtain a constant current constant voltage (Constant Current Voltage: The secondary battery 150 is charged by the CCCV) charging method.

マイクロコントローラ１００は、制御部１１０と、記憶部１２０、入出力部１３０を備える。なお、記憶部１２０は、マイクロコントローラ１００の内部に限られず、マイクロコントローラ１００の外部に設けられてもよい。 The microcontroller 100 includes a control unit 110, a storage unit 120, and an input / output unit 130. The storage unit 120 is not limited to the inside of the microcontroller 100, and may be provided outside the microcontroller 100.

制御部１１０は、ＣＰＵ（Ｃｅｎｔｒａｌ Ｐｒｏｃｅｓｓｉｎｇ Ｕｎｉｔ）等のプロセッサを備え、記憶部１２０に記憶されている制御プログラムを読み出して実行することにより、後述する各部（充電ＩＣ制御部１１１、第１補正部１１２、第２補正部１１３）の機能を実現する。 The control unit 110 includes a processor such as a CPU (Central Processing Unit), and reads and executes a control program stored in the storage unit 120 to read and execute each unit (charging IC control unit 111, first correction unit 112) described later. , The function of the second correction unit 113) is realized.

記憶部１２０は、ＲＯＭ（Ｒｅａｄ Ｏｎｌｙ Ｍｅｍｏｒｙ）、ＲＡＭ（Ｒａｎｄｏｍ Ａｃｃｅｓｓ Ｍｅｍｏｒｙ）等で構成される。ＲＯＭには、制御部１１０のＣＰＵが実行するプログラム及びプログラムを実行する上で予め必要なデータが、記憶されている。ＲＡＭには、プログラム実行中に作成されたり変更されたりするデータが記憶される。 The storage unit 120 is composed of a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The ROM stores a program executed by the CPU of the control unit 110 and data necessary for executing the program in advance. Data that is created or changed during program execution is stored in the RAM.

入出力部１３０は、制御部１１０と、外部の装置との間でデータの入出力を行う。例えば、充電制御装置１０が推測した電池残量は、入出力部１３０を介して、外部の装置に送信される。また、外部の装置からのリクエスト等の指示（例えば電池残量の要求）は、入出力部１３０を介して充電制御装置１０に通知される。 The input / output unit 130 inputs / outputs data between the control unit 110 and an external device. For example, the remaining battery level estimated by the charge control device 10 is transmitted to an external device via the input / output unit 130. Further, an instruction such as a request from an external device (for example, a request for the remaining battery level) is notified to the charge control device 10 via the input / output unit 130.

充電制御ＩＣ１３１は、充電源１４０から供給を受ける充電電流や充電電圧（充電パラメータ）を変化させて、ＣＣＣＶ充電方式で二次電池１５０を充電するように充電を制御する。例えば、充電制御ＩＣ１３１は、二次電池１５０の出力電圧が所定の切替電圧に達するまではＣＣ（Ｃｏｎｓｔａｎｔ Ｃｕｒｒｅｎｔ）充電方式により二次電池１５０を定電流で充電し、所定の切替電圧に達したら、充電パラメータ（充電電流や充電電圧）を変化させて、充電方式をＣＶ（Ｃｏｎｓｔａｎｔ Ｖｏｌｔａｇｅ）充電方式に切り替えて二次電池１５０の充電を定電圧で行うように充電を制御する。そして、充電制御ＩＣ１３１は、充電方式をＣＣ充電からＣＶ充電に切り替える時に、充電パラメータを変化させたことを通知する通知信号であるＣＶ充電切替通知を制御部１１０に送信する。また、充電制御ＩＣ１３１は、二次電池１５０の充電が完了した時に、充電が完了したことを通知する通知信号である満充電通知を制御部１１０に送信する。充電制御ＩＣ１３１は、二次電池の充電状態が所定の条件を満たす場合に充電パラメータを変化させる充電制御部として機能する。 The charge control IC 131 controls charging so as to charge the secondary battery 150 by the CCCV charging method by changing the charging current and the charging voltage (charging parameter) supplied from the charging source 140. For example, the charge control IC 131 charges the secondary battery 150 with a constant current by a CC (Constant Curent) charging method until the output voltage of the secondary battery 150 reaches a predetermined switching voltage, and when the output voltage reaches a predetermined switching voltage, By changing the charging parameters (charging current and charging voltage), the charging method is switched to the CV (Constant Voltage) charging method, and the charging is controlled so that the secondary battery 150 is charged at a constant voltage. Then, when the charging method is switched from CC charging to CV charging, the charging control IC 131 transmits a CV charging switching notification, which is a notification signal for notifying that the charging parameter has been changed, to the control unit 110. Further, when the charging of the secondary battery 150 is completed, the charging control IC 131 transmits a full charge notification, which is a notification signal for notifying that the charging is completed, to the control unit 110. The charge control IC 131 functions as a charge control unit that changes the charge parameter when the charge state of the secondary battery satisfies a predetermined condition.

電池電圧計測ＩＣ１３２は、二次電池１５０の出力電圧を測定し、測定された電圧に基づいて、電池残量を推測し、推測した電池残量を制御部１１０に通知する。二次電池１５０は、温度により特性（出力電圧等）が変化するため、電池電圧計測ＩＣ１３２は、機能構成として、残量推測部１３４と、温度特性補正部１３５と、を備え、測定された二次電池１５０の出力電圧から残量推測部１３４が電池残量を推測する際に、温度特性補正部１３５で補正する。これにより、電池電圧計測ＩＣ１３２は、二次電池１５０の温度が変化しても、電池残量の推測の精度が低下しないようにしている。電池電圧計測ＩＣ１３２は、二次電池１５０の出力電圧を計測する電圧計測部として、また、計測した出力電圧から二次電池１５０の残量を推測する残量推測部として、機能する。 The battery voltage measurement IC 132 measures the output voltage of the secondary battery 150, estimates the remaining battery level based on the measured voltage, and notifies the control unit 110 of the estimated remaining battery level. Since the characteristics (output voltage, etc.) of the secondary battery 150 change depending on the temperature, the battery voltage measuring IC 132 includes a remaining amount estimation unit 134 and a temperature characteristic correction unit 135 as functional configurations, and is measured. When the remaining battery amount estimation unit 134 estimates the battery remaining amount from the output voltage of the next battery 150, the temperature characteristic correction unit 135 corrects it. As a result, the battery voltage measuring IC 132 prevents the accuracy of estimating the remaining battery level from deteriorating even if the temperature of the secondary battery 150 changes. The battery voltage measuring IC 132 functions as a voltage measuring unit for measuring the output voltage of the secondary battery 150 and as a remaining amount estimating unit for estimating the remaining amount of the secondary battery 150 from the measured output voltage.

温度センサ１３３は、例えばサーミスタであり、二次電池１５０の温度を測定する。温度センサ１３３が測定した二次電池１５０の温度は、電池電圧計測ＩＣ１３２に通知され、電池電圧計測ＩＣ１３２が備える温度特性補正部１３５は、通知された温度に基づいて、残量推測部１３４が推測する電池残量を補正する。温度センサ１３３は、二次電池１５０の温度を測定する温度測定部として機能する。 The temperature sensor 133 is, for example, a thermistor and measures the temperature of the secondary battery 150. The temperature of the secondary battery 150 measured by the temperature sensor 133 is notified to the battery voltage measurement IC 132, and the temperature characteristic correction unit 135 included in the battery voltage measurement IC 132 is estimated by the remaining amount estimation unit 134 based on the notified temperature. Correct the remaining battery level. The temperature sensor 133 functions as a temperature measuring unit for measuring the temperature of the secondary battery 150.

電池電圧計測ＩＣ１３２が、計測した二次電池１５０の電圧から電池残量を推測する方法や、温度センサ１３３から通知された温度に基づいて電池残量の推測値を補正する方法は任意である。例えば、電池電圧計測ＩＣ１３２は、図２に示すような、二次電池１５０の出力電圧及び温度と推測される電池残量とを記録したテーブルを参照して、電池残量の推測及び補正を行ってもよい。 The method in which the battery voltage measurement IC 132 estimates the remaining battery level from the measured voltage of the secondary battery 150, or the method in which the estimated value of the remaining battery level is corrected based on the temperature notified from the temperature sensor 133 is arbitrary. For example, the battery voltage measuring IC 132 estimates and corrects the remaining battery level by referring to a table that records the output voltage and temperature of the secondary battery 150 and the estimated remaining battery level, as shown in FIG. You may.

充電源１４０は、充電制御装置１０に、二次電池１５０の充電用の電力を供給する電源である。電力の供給方式は任意である。例えば、充電源１４０は、例えばＵＳＢ（Ｕｎｉｖｅｒｓａｌ Ｓｅｒｉａｌ Ｂｕｓ）等のケーブルにより電力を供給してもよい。また、充電源１４０は、電磁誘導方式や磁界共鳴方式により、ワイヤレスで電力を供給してもよい。 The charging source 140 is a power source that supplies electric power for charging the secondary battery 150 to the charging control device 10. The power supply method is arbitrary. For example, the charging source 140 may be supplied with power by a cable such as USB (Universal Serial Bus). Further, the charging source 140 may be wirelessly supplied with electric power by an electromagnetic induction method or a magnetic field resonance method.

二次電池１５０は、リチウムイオン電池等の、充電可能な電池である。充電制御装置１０は、充電源１４０から電力の供給を受けて、二次電池１５０を充電する。 The secondary battery 150 is a rechargeable battery such as a lithium ion battery. The charge control device 10 receives power from the charging source 140 to charge the secondary battery 150.

次に、充電制御装置１０の制御部１１０の機能的構成について説明する。制御部１１０は、充電ＩＣ制御部１１１、第１補正部１１２、第２補正部１１３の機能を実現し、二次電池１５０の充電を充電制御ＩＣ１３１にさせるとともに、二次電池１５０の残量を推測する。 Next, the functional configuration of the control unit 110 of the charge control device 10 will be described. The control unit 110 realizes the functions of the charging IC control unit 111, the first correction unit 112, and the second correction unit 113, causes the charging control IC 131 to charge the secondary battery 150, and reduces the remaining amount of the secondary battery 150. Infer.

充電ＩＣ制御部１１１は、充電制御ＩＣ１３１に充電開始の指示を出し、充電制御ＩＣ１３１に、ＣＣＣＶ充電方式による二次電池１５０の充電を開始させる。このＣＣＣＶ充電方式は、図３に示すように、二次電池１５０の出力電圧が所定の切替電圧（図３では４．０Ｖ）に達するまでは、定電流による充電（ＣＣ充電）を行い、出力電圧が切替電圧に達したら、それ以後は、満充電になるまで、定電圧による充電（ＣＶ充電）を行う充電方式である。本実施形態では、充電制御ＩＣ１３１が、充電方式をＣＣ充電からＣＶ充電に切り替える時に、ＣＶ充電切替通知を制御部１１０に送信する。また、充電制御ＩＣ１３１は、充電が完了した時に、満充電通知を制御部１１０に送信する。 The charging IC control unit 111 issues an instruction to start charging to the charging control IC 131, and causes the charging control IC 131 to start charging the secondary battery 150 by the CCCV charging method. As shown in FIG. 3, this CCCV charging method performs charging with a constant current (CC charging) until the output voltage of the secondary battery 150 reaches a predetermined switching voltage (4.0 V in FIG. 3), and outputs the battery. After the voltage reaches the switching voltage, it is a charging method in which constant voltage charging (CV charging) is performed until the battery is fully charged. In the present embodiment, when the charge control IC 131 switches the charging method from CC charging to CV charging, the charge control IC 131 transmits a CV charge switching notification to the control unit 110. Further, the charge control IC 131 transmits a full charge notification to the control unit 110 when charging is completed.

第１補正部１１２は、充電制御ＩＣ１３１から、ＣＶ充電切替通知を取得したら、充電方式が切り替わる時の電池残量値に基づいて、電池電圧計測ＩＣ１３２が推測した二次電池１５０の電池残量の値を補正する。 When the first correction unit 112 obtains the CV charge switching notification from the charge control IC 131, the battery voltage measurement IC 132 estimates the remaining battery level of the secondary battery 150 based on the battery level value when the charging method is switched. Correct the value.

第２補正部１１３は、充電制御ＩＣ１３１から、満充電通知を取得したら、その時点での二次電池１５０の出力電圧が、電池残量１００％の時の電圧であることに基づいて、電池電圧計測ＩＣ１３２が推測した二次電池１５０の電池残量の値を補正する。 When the second correction unit 113 obtains a full charge notification from the charge control IC 131, the battery voltage is based on the fact that the output voltage of the secondary battery 150 at that time is the voltage when the remaining battery level is 100%. The value of the remaining battery level of the secondary battery 150 estimated by the measurement IC 132 is corrected.

ここで、充電制御装置１０が、第１補正部１１２や第２補正部１１３によって、電池電圧計測ＩＣ１３２が推測した二次電池１５０の電池残量の値を補正する必要がある理由を説明する。 Here, the reason why the charge control device 10 needs to correct the value of the remaining battery level of the secondary battery 150 estimated by the battery voltage measurement IC 132 by the first correction unit 112 and the second correction unit 113 will be described.

二次電池１５０の出力電圧は、図４に示すように、放電した容量に応じて低下していくが、この放電特性は、負荷の大きさ、二次電池１５０の温度、劣化状況等によって変化する。二次電池１５０を、常温（例えば２０℃）で所定の定電流（例えば１Ａ）で放電した時の出力電圧の変化は、例えば図４の放電曲線２００のようになる。そして、同じ温度で放電電流を少なくする（例えば０．２Ａ）と、出力電圧の変化は例えば図４の放電曲線２０１のようになる。また、同じ温度で放電電流を多くする（例えば２Ａ）と、出力電圧の変化は図４の放電曲線２０２のようになる。つまり、二次電池１５０が接続されている装置の負荷の大きさにより、出力電圧が同じでも、電池残量は異なることになる。 As shown in FIG. 4, the output voltage of the secondary battery 150 decreases according to the discharged capacity, but this discharge characteristic changes depending on the size of the load, the temperature of the secondary battery 150, the deterioration status, and the like. To do. The change in the output voltage when the secondary battery 150 is discharged at room temperature (for example, 20 ° C.) at a predetermined constant current (for example, 1 A) is as shown in the discharge curve 200 in FIG. 4, for example. Then, when the discharge current is reduced at the same temperature (for example, 0.2 A), the change in the output voltage becomes as shown in the discharge curve 201 of FIG. 4, for example. Further, when the discharge current is increased at the same temperature (for example, 2A), the change in the output voltage becomes as shown in the discharge curve 202 in FIG. That is, depending on the magnitude of the load of the device to which the secondary battery 150 is connected, the remaining battery level will differ even if the output voltage is the same.

また、二次電池１５０は、温度によっても特性が変わり、一般に温度が高いと出力電圧も高くなり、温度が低下すると出力電圧も低下する。つまり、二次電池１５０の温度によって、出力電圧が同じでも、電池残量は異なることになる。したがって、電池電圧計測ＩＣ１３２は、例えば、図２に示すような、出力電圧、温度及び電池残量の関係が記録されたテーブルを参照して、二次電池１５０の出力電圧から電池残量を推測している。しかし、上述したように、負荷の大きさによっても電池残量が異なることに対応できていない。 The characteristics of the secondary battery 150 also change depending on the temperature. Generally, when the temperature is high, the output voltage is high, and when the temperature is low, the output voltage is also low. That is, depending on the temperature of the secondary battery 150, even if the output voltage is the same, the remaining battery level will be different. Therefore, the battery voltage measuring IC 132 estimates the remaining battery level from the output voltage of the secondary battery 150 by referring to a table in which the relationship between the output voltage, the temperature, and the remaining battery level is recorded, as shown in FIG. 2, for example. doing. However, as described above, it is not possible to cope with the difference in the remaining battery level depending on the magnitude of the load.

図４に示すように、負荷が変化しない時の放電特性は、負荷の値によらず、似たような形状の放電曲線になっている（負荷の値に応じて、放電曲線は上下しているだけで、曲線の形状はあまり変化していない）。したがって、負荷が変化しない前提であれば、放電曲線上の１点において、出力電圧と電池残量の関係を把握できれば、それに基づいて出力電圧から電池残量を推測できることになる。 As shown in FIG. 4, the discharge characteristics when the load does not change have a discharge curve having a similar shape regardless of the load value (the discharge curve moves up and down according to the load value). However, the shape of the curve has not changed much). Therefore, assuming that the load does not change, if the relationship between the output voltage and the remaining battery level can be grasped at one point on the discharge curve, the remaining battery level can be estimated from the output voltage based on the relationship.

そこで、第１補正部１１２は、充電制御ＩＣ１３１が充電方式をＣＣ充電からＣＶ充電に切り替える時の二次電池１５０の電池残量を、予め補正用データとして記憶しておく。そして、充電制御ＩＣ１３１からＣＶ充電切替通知が来た時に、その時点での電池電圧計測ＩＣ１３２の電池残量の推測値を、この補正用データの値に補正する。そして、この時点の、電池電圧計測ＩＣ１３２の電池残量の推測値と補正用データの値との関係に基づき、その後の電池電圧計測ＩＣ１３２の電池残量の推測値も同様に補正する。 Therefore, the first correction unit 112 stores in advance the remaining battery level of the secondary battery 150 when the charge control IC 131 switches the charging method from CC charging to CV charging as correction data. Then, when the CV charge switching notification comes from the charge control IC 131, the estimated value of the remaining battery level of the battery voltage measurement IC 132 at that time is corrected to the value of this correction data. Then, based on the relationship between the estimated value of the remaining battery level of the battery voltage measuring IC 132 and the value of the correction data at this time, the estimated value of the remaining battery level of the subsequent battery voltage measuring IC 132 is also corrected in the same manner.

上述したように、二次電池１５０の出力電圧は温度によっても影響を受けるので、第１補正部１１２は、上述の補正用データを、図５に示すような、温度毎に電池残量を記録したテーブルで記憶してもよい。 As described above, since the output voltage of the secondary battery 150 is also affected by the temperature, the first correction unit 112 records the above-mentioned correction data for each temperature as shown in FIG. You may memorize it in the table.

また、第２補正部１１３は、充電制御ＩＣ１３１から、満充電通知が来た時に、その時点での電池電圧計測ＩＣ１３２の電池残量の推測値を、電池残量１００％に補正する。そして、この時点の、電池電圧計測ＩＣ１３２の電池残量の推測値が電池残量１００％でなければならないということに基づき、その後の電池電圧計測ＩＣ１３２の電池残量の推測値も同様に補正する。 Further, the second correction unit 113 corrects the estimated value of the remaining battery level of the battery voltage measuring IC 132 at that time to 100% of the remaining battery level when a full charge notification is received from the charge control IC 131. Then, based on the fact that the estimated value of the remaining battery level of the battery voltage measuring IC 132 at this time must be 100% of the remaining battery level, the estimated value of the remaining battery level of the battery voltage measuring IC 132 thereafter is also corrected in the same manner. ..

次に、制御部１１０が、上述したように、電池残量の値を補正する処理である残量補正処理について、図６を参照して説明する。残量補正処理は、充電制御装置１０が起動すると、１つのスレッドとして起動し、他のスレッドと並行して処理が開始される。また、この残量補正処理は、終了した後も、再度残量補正処理を更新したい場合には随時実行されるものとする。 Next, as described above, the control unit 110 will describe the remaining amount correction process, which is the process of correcting the value of the remaining battery level, with reference to FIG. When the charge control device 10 is activated, the remaining amount correction process is activated as one thread, and the process is started in parallel with the other threads. Further, even after the remaining amount correction process is completed, if it is desired to update the remaining amount correction process again, it shall be executed at any time.

まず、制御部１１０は、電池電圧計測ＩＣ１３２から、電池残量の推測値を取得する（ステップＳ１０１）。ステップＳ１０１は、残量推測ステップとも呼ばれる。そして、制御部１１０は、取得した電池残量の推測値が所定残量（例えば９０％）未満であるか否かを判定する（ステップＳ１０３）。なお、この判定に用いる所定残量は、第１補正部１１２が記憶している補正用データの値を用いてもよい。 First, the control unit 110 acquires an estimated value of the remaining battery level from the battery voltage measurement IC 132 (step S101). Step S101 is also called a remaining amount estimation step. Then, the control unit 110 determines whether or not the acquired estimated value of the remaining battery level is less than a predetermined remaining amount (for example, 90%) (step S103). As the predetermined remaining amount used for this determination, the value of the correction data stored in the first correction unit 112 may be used.

電池残量の推測値が所定残量未満なら（ステップＳ１０３；Ｙｅｓ）、第１補正部１１２は、充電制御ＩＣ１３１から、ＣＶ充電切替通知を取得したか否かを判定する（ステップＳ１０４）。ＣＶ充電切替通知を取得していないなら（ステップＳ１０４；Ｎｏ）、ステップＳ１０１に戻る。ＣＶ充電切替通知を取得したなら（ステップＳ１０４；Ｙｅｓ）、第１補正部１１２は、電池電圧計測ＩＣ１３２が推測した電池残量（残量推測値）を電池電圧計測ＩＣ１３２から取得する（ステップＳ１０５）。そして、取得した残量推測値と、第１補正部１１２が記憶している補正用データとの関係に基づいて、残量推測値を補正し（ステップＳ１０６）、残量補正処理を終了する。ステップＳ１０６は、第１補正ステップとも呼ばれる。その後は、第１補正部１１２は、ステップＳ１０６での補正と同様にして、電池電圧計測ＩＣ１３２が推測した電池残量を補正することになる。なお、ステップＳ１０４で、第１補正部１１２が充電制御ＩＣ１３１からＣＶ充電切替通知を取得した場合、充電制御ＩＣ１３１は充電パラメータを変化させることにより、充電方式をＣＣ充電からＣＶ充電に切り替えている。この、充電制御ＩＣ１３１が充電パラメータを変化させる処理ステップは、パラメータ変化ステップとも呼ばれる。 If the estimated value of the remaining battery level is less than the predetermined remaining amount (step S103; Yes), the first correction unit 112 determines whether or not the CV charge switching notification has been acquired from the charge control IC 131 (step S104). If the CV charge switching notification has not been acquired (step S104; No), the process returns to step S101. If the CV charge switching notification is acquired (step S104; Yes), the first correction unit 112 acquires the battery remaining amount (remaining amount estimated value) estimated by the battery voltage measuring IC 132 from the battery voltage measuring IC 132 (step S105). .. Then, the remaining amount estimated value is corrected based on the relationship between the acquired remaining amount estimated value and the correction data stored in the first correction unit 112 (step S106), and the remaining amount correction process is completed. Step S106 is also referred to as a first correction step. After that, the first correction unit 112 corrects the remaining battery level estimated by the battery voltage measurement IC 132 in the same manner as the correction in step S106. When the first correction unit 112 acquires the CV charge switching notification from the charge control IC 131 in step S104, the charge control IC 131 switches the charging method from CC charging to CV charging by changing the charging parameter. The processing step in which the charge control IC 131 changes the charge parameter is also called a parameter change step.

一方、電池残量の推測値が所定残量以上なら（ステップＳ１０３；Ｎｏ）、第２補正部１１３は、充電制御ＩＣ１３１から、満充電通知を取得したか否かを判定する（ステップＳ１０７）。満充電通知を取得していないなら（ステップＳ１０７；Ｎｏ）、ステップＳ１０１に戻る。満充電通知を取得したなら（ステップＳ１０７；Ｙｅｓ）、第２補正部１１３は、電池電圧計測ＩＣ１３２が推測した電池残量（残量推測値）を電池電圧計測ＩＣ１３２から取得する（ステップＳ１０８）。そして、取得した残量推測値を、電池残量１００％に補正し（ステップＳ１０９）、残量補正処理を終了する。その後は、第２補正部１１３は、ステップＳ１０９で取得した残量推測値が実際には電池残量１００％でなければならないことに基づいて、電池電圧計測ＩＣ１３２が推測した電池残量を補正することになる。 On the other hand, if the estimated value of the remaining battery level is equal to or higher than the predetermined remaining amount (step S103; No), the second correction unit 113 determines whether or not a full charge notification has been obtained from the charge control IC 131 (step S107). If the full charge notification has not been obtained (step S107; No), the process returns to step S101. If the full charge notification is acquired (step S107; Yes), the second correction unit 113 acquires the battery remaining amount (remaining amount estimated value) estimated by the battery voltage measuring IC 132 from the battery voltage measuring IC 132 (step S108). Then, the acquired remaining amount estimated value is corrected to 100% of the remaining battery level (step S109), and the remaining amount correction process is completed. After that, the second correction unit 113 corrects the remaining battery level estimated by the battery voltage measuring IC 132 based on the fact that the remaining battery level estimated value acquired in step S109 must actually be 100% of the remaining battery level. It will be.

なお、残量補正処理は終了後も随時実行されることにより、例えば、第１補正部１１２による補正が行われている時に、二次電池１５０の充電が完了した場合には、その後の残量補正処理の実行により、その後は、第２補正部１１３による補正が行われるようになる。 It should be noted that the remaining amount correction process is executed at any time even after the completion, so that, for example, when the correction by the first correction unit 112 is performed and the charging of the secondary battery 150 is completed, the remaining amount after that. After the correction processing is executed, the correction is performed by the second correction unit 113.

以上の残量補正処理により、充電制御装置１０は、二次電池１５０の充電を完了した時だけでなく、充電途中で、充電方式をＣＣ充電からＣＶ充電に切り替える時にも、電池残量の補正をすることができる。このため、充電制御装置１０は、二次電池１５０の残量の推定精度をより向上させることができる。 By the above remaining amount correction processing, the charge control device 10 corrects the remaining amount of the battery not only when the charging of the secondary battery 150 is completed but also when the charging method is switched from CC charging to CV charging during charging. Can be done. Therefore, the charge control device 10 can further improve the estimation accuracy of the remaining amount of the secondary battery 150.

（第２実施形態）
第１実施形態では、電池電圧計測ＩＣ１３２が、二次電池１５０の電圧を計測するだけでなく、電池残量の推測も行っていたが、電池電圧計測ＩＣが単に電圧を計測するだけの第２実施形態について説明する。 (Second Embodiment)
In the first embodiment, the battery voltage measuring IC 132 not only measures the voltage of the secondary battery 150 but also estimates the remaining battery level, but the battery voltage measuring IC simply measures the voltage. An embodiment will be described.

第２実施形態に係る充電制御装置１１は、図７に示すように、ハードウェア構成として、マイクロコントローラ１００と、充電制御ＩＣ１３１と、電池電圧計測ＩＣ１３６と、温度センサ１３３と、を備える。第１実施形態と比較すると、充電制御装置１１は、制御部１１０が、残量推測部１１４及び温度特性補正部１１５を備える代わりに、電池電圧計測ＩＣ１３６は、二次電池１５０の出力電圧を計測するだけで、電池残量の推測は行わない。また、温度センサ１３３は、電池電圧計測ＩＣ１３６ではなく、制御部１１０に温度を通知する。それ以外は、充電制御装置１１は、第１実施形態と同様である。 As shown in FIG. 7, the charge control device 11 according to the second embodiment includes a microprocessor 100, a charge control IC 131, a battery voltage measurement IC 136, and a temperature sensor 133 as a hardware configuration. Compared with the first embodiment, in the charge control device 11, the battery voltage measurement IC 136 measures the output voltage of the secondary battery 150 instead of the control unit 110 including the remaining amount estimation unit 114 and the temperature characteristic correction unit 115. It does not estimate the remaining battery level. Further, the temperature sensor 133 notifies the temperature to the control unit 110 instead of the battery voltage measurement IC 136. Other than that, the charge control device 11 is the same as that of the first embodiment.

制御部１１０は、充電ＩＣ制御部１１１、第１補正部１１２、第２補正部１１３だけでなく、残量推測部１１４、温度特性補正部１１５の機能も実現する。 The control unit 110 realizes not only the functions of the charging IC control unit 111, the first correction unit 112, and the second correction unit 113, but also the functions of the remaining amount estimation unit 114 and the temperature characteristic correction unit 115.

また、電池電圧計測ＩＣ１３６は、二次電池１５０の出力電圧を測定し、測定した電圧を制御部１１０に通知する。 Further, the battery voltage measuring IC 136 measures the output voltage of the secondary battery 150 and notifies the control unit 110 of the measured voltage.

そして、温度センサ１３３が測定した二次電池１５０の温度は、制御部１１０に通知され、温度特性補正部１１５は、通知された温度に基づいて、残量推測部１１４が推測する電池残量を補正する。 Then, the temperature of the secondary battery 150 measured by the temperature sensor 133 is notified to the control unit 110, and the temperature characteristic correction unit 115 estimates the remaining battery level by the remaining battery estimation unit 114 based on the notified temperature. to correct.

残量推測部１１４が、電池電圧計測ＩＣ１３６から通知された二次電池１５０の電圧から電池残量を推測する方法や、温度センサ１３３から通知された温度に基づいて電池残量の推測値を補正する方法は任意である。制御部１１０は、例えば、電池電圧計測ＩＣ１３２と同様に、図２に示すような、二次電池１５０の出力電圧及び温度と推測される電池残量とを記録したテーブルを参照して、電池残量の推測及び補正を行ってもよい。 The remaining battery level estimation unit 114 corrects the estimated battery level based on the method of estimating the battery level from the voltage of the secondary battery 150 notified from the battery voltage measurement IC 136 and the temperature notified from the temperature sensor 133. The method of doing so is arbitrary. For example, the control unit 110 refers to a table that records the output voltage and temperature of the secondary battery 150 and the estimated remaining battery level, as shown in FIG. 2, in the same manner as the battery voltage measurement IC 132, and refers to the remaining battery. The amount may be estimated and corrected.

この場合、図２に示すようなテーブルをマスターテーブルとして記憶部１２０に記憶しておき、第１補正部１１２がＣＶ充電切替通知を取得したら、充電制御ＩＣ１３１が充電方式をＣＣ充電からＣＶ充電に切り替える時の二次電池１５０の出力電圧（切替電圧）と、その時の二次電池１５０の電池残量（補正用データ）との関係に基づいて、マスターテーブルの電圧の項目を書き換えた（補正した）テーブルを第１補正用テーブルとして、記憶部１２０に作成するようにしてもよい。 In this case, a table as shown in FIG. 2 is stored in the storage unit 120 as a master table, and when the first correction unit 112 obtains the CV charge switching notification, the charge control IC 131 changes the charging method from CC charging to CV charging. Based on the relationship between the output voltage of the secondary battery 150 (switching voltage) at the time of switching and the remaining battery level (correction data) of the secondary battery 150 at that time, the voltage item of the master table was rewritten (corrected). ) The table may be created in the storage unit 120 as the first correction table.

同様に、第２補正部１１３が満充電通知を取得したら、その時点で電池電圧計測ＩＣ１３６から通知されている二次電池１５０の出力電圧が、電池残量１００％に対応するように、マスターテーブルの電圧の項目を書き換えた（補正した）テーブルを第２補正用テーブルとして、記憶部１２０に作成するようにしてもよい。このような、第１補正用テーブル、第２補正用テーブルを作成すれば、その後は、これらのテーブルを参照して二次電池１５０の出力電圧から電池残量を推測できるようになる。 Similarly, when the second correction unit 113 obtains the full charge notification, the master table so that the output voltage of the secondary battery 150 notified from the battery voltage measurement IC 136 at that time corresponds to the remaining battery level of 100%. A table in which the voltage item of the above is rewritten (corrected) may be created in the storage unit 120 as a second correction table. After creating such a first correction table and a second correction table, the remaining battery level can be estimated from the output voltage of the secondary battery 150 with reference to these tables.

第２実施形態に係る残量補正処理について、図８を参照して説明する。この残量補正処理も、第１実施形態と同様に、充電制御装置１１が起動すると、１つのスレッドとして起動し、他のスレッドと並行して処理が開始される。また、この残量補正処理は、第１実施形態と同様に、終了した後も、再度残量補正処理を更新したい場合には随時実行されるものとする。 The remaining amount correction process according to the second embodiment will be described with reference to FIG. Similar to the first embodiment, this remaining amount correction process is also started as one thread when the charge control device 11 is activated, and the process is started in parallel with the other threads. Further, as in the first embodiment, this remaining amount correction process is executed at any time when it is desired to update the remaining amount correction process again even after the completion.

まず、残量推測部１１４は、電池電圧計測ＩＣ１３６から、二次電池１５０の出力電圧を取得する（ステップＳ２０１）。ステップＳ２０１は、電圧計測ステップとも呼ばれる。そして、残量推測部１１４は、取得した出力電圧に基づいて電池残量を推測する（ステップＳ２０２）。ステップＳ２０２は、残量推測ステップとも呼ばれる。そして、制御部１１０は、電池残量の推測値が所定残量（例えば９０％）未満であるか否かを判定する（ステップＳ２０３）。なお、この判定に用いる所定残量は、第１補正部１１２が記憶している補正用データの値を用いてもよい。 First, the remaining amount estimation unit 114 acquires the output voltage of the secondary battery 150 from the battery voltage measurement IC 136 (step S201). Step S201 is also called a voltage measurement step. Then, the remaining amount estimation unit 114 estimates the remaining battery amount based on the acquired output voltage (step S202). Step S202 is also called a remaining amount estimation step. Then, the control unit 110 determines whether or not the estimated value of the remaining battery level is less than the predetermined remaining amount (for example, 90%) (step S203). As the predetermined remaining amount used for this determination, the value of the correction data stored in the first correction unit 112 may be used.

電池残量の推測値が所定残量未満なら（ステップＳ２０３；Ｙｅｓ）、第１補正部１１２は、充電制御ＩＣ１３１から、ＣＶ充電切替通知を取得したか否かを判定する（ステップＳ２０４）。ステップＳ２０４は、判定ステップとも呼ばれる。ＣＶ充電切替通知を取得していないなら（ステップＳ２０４；Ｎｏ）、ステップＳ２０１に戻る。ＣＶ充電切替通知を取得したなら（ステップＳ２０４；Ｙｅｓ）、残量推測部１１４は、電池電圧計測ＩＣ１３６から二次電池１５０の出力電圧を取得する（ステップＳ２０５）。そして、残量推測部１１４は、取得した出力電圧に基づいて電池残量を推測する（ステップＳ２０６）。そして、残量推測部１１４が推測した電池残量（残量推測値）と、第１補正部１１２が記憶している補正用データとの関係に基づいて、第１補正部１１２は、残量推測値を補正し（ステップＳ２０７）、残量補正処理を終了する。ステップＳ２０７は、第１補正ステップとも呼ばれる。例えば、第１補正部１１２が、ステップＳ２０７で、上述の第１補正用テーブルを作成するようにすれば、その後は、この第１補正用テーブルを参照することにより、電池電圧計測ＩＣ１３２が計測した二次電池１５０の出力電圧から補正後の電池残量を求めることができるようになる。 If the estimated value of the remaining battery level is less than the predetermined remaining amount (step S203; Yes), the first correction unit 112 determines whether or not the CV charge switching notification has been acquired from the charge control IC 131 (step S204). Step S204 is also called a determination step. If the CV charge switching notification has not been acquired (step S204; No), the process returns to step S201. If the CV charge switching notification is acquired (step S204; Yes), the remaining amount estimation unit 114 acquires the output voltage of the secondary battery 150 from the battery voltage measurement IC 136 (step S205). Then, the remaining amount estimation unit 114 estimates the remaining battery amount based on the acquired output voltage (step S206). Then, based on the relationship between the remaining battery level (remaining amount estimated value) estimated by the remaining amount estimation unit 114 and the correction data stored in the first correction unit 112, the first correction unit 112 performs the remaining amount. The estimated value is corrected (step S207), and the remaining amount correction process is completed. Step S207 is also referred to as a first correction step. For example, if the first correction unit 112 creates the above-mentioned first correction table in step S207, then the battery voltage measurement IC 132 measures by referring to the first correction table. The remaining battery level after correction can be obtained from the output voltage of the secondary battery 150.

一方、電池残量の推測値が所定残量以上なら（ステップＳ２０３；Ｎｏ）、第２補正部１１３は、充電制御ＩＣ１３１から、満充電通知を取得したか否かを判定する（ステップＳ２０８）。満充電通知を取得していないなら（ステップＳ２０８；Ｎｏ）、ステップＳ２０１に戻る。満充電通知を取得したなら（ステップＳ２０８；Ｙｅｓ）、残量推測部１１４は、電池電圧計測ＩＣ１３６から二次電池１５０の出力電圧を取得する（ステップＳ２０９）。そして、残量推測部１１４は、取得した出力電圧に基づいて電池残量を推測する（ステップＳ２１０）。そして、残量推測部１１４が推測した電池残量（残量推測値）が、実際には電池残量１００％でなければならないことに基づいて、残量推測値を補正し（ステップＳ２１１）、残量補正処理を終了する。例えば、第２補正部１１３が、ステップＳ２１１で、上述の第２補正用テーブルを作成するようにすれば、その後は、この第２補正用テーブルを参照することにより、電池電圧計測ＩＣ１３２が計測した二次電池１５０の出力電圧から補正後の電池残量を求めることができるようになる。 On the other hand, if the estimated value of the remaining battery level is equal to or higher than the predetermined remaining amount (step S203; No), the second correction unit 113 determines whether or not a full charge notification has been obtained from the charge control IC 131 (step S208). If the full charge notification has not been obtained (step S208; No), the process returns to step S201. If the full charge notification is acquired (step S208; Yes), the remaining amount estimation unit 114 acquires the output voltage of the secondary battery 150 from the battery voltage measurement IC 136 (step S209). Then, the remaining amount estimation unit 114 estimates the remaining battery amount based on the acquired output voltage (step S210). Then, based on the fact that the remaining battery level (estimated remaining amount) estimated by the remaining amount estimation unit 114 must actually be 100% of the remaining battery level, the estimated remaining amount is corrected (step S211). End the remaining amount correction process. For example, if the second correction unit 113 creates the above-mentioned second correction table in step S211 and then, the battery voltage measurement IC 132 measures by referring to the second correction table. The remaining battery level after correction can be obtained from the output voltage of the secondary battery 150.

なお、第１実施形態と同様に、残量補正処理は終了後も随時実行されることにより、例えば、第１補正部１１２による補正が行われている時に、二次電池１５０の充電が完了した場合には、その後の残量補正処理の実行により、その後は、第２補正部１１３による補正が行われるようになる。 As in the first embodiment, the remaining amount correction process is executed at any time even after the completion, so that the charging of the secondary battery 150 is completed, for example, when the correction is performed by the first correction unit 112. In that case, the subsequent execution of the remaining amount correction process causes the second correction unit 113 to perform correction thereafter.

以上の残量補正処理により、充電制御装置１１は、二次電池１５０の充電を完了した時だけでなく、充電途中で、充電方式をＣＣ充電からＣＶ充電に切り替える時にも、電池残量の補正をすることができる。このため、充電制御装置１１は、二次電池１５０の残量の推定精度をより向上させることができる。 By the above remaining amount correction processing, the charge control device 11 corrects the remaining amount of the battery not only when the charging of the secondary battery 150 is completed but also when the charging method is switched from CC charging to CV charging during charging. Can be done. Therefore, the charge control device 11 can further improve the estimation accuracy of the remaining amount of the secondary battery 150.

（変形例）
上述の実施形態では、充電制御ＩＣ１３１は、二次電池１５０の出力電圧が所定の切替電圧に達したら、充電方式をＣＣ充電からＣＶ充電に切り替えていたが、充電方式の切替タイミングは二次電池１５０の出力電圧の条件に限定されない。例えば、二次電池１５０の残量が所定の値（例えば８０％）に達したら、充電方式をＣＣ充電からＣＶ充電に切り替えてもよい。 (Modification example)
In the above-described embodiment, the charge control IC 131 switches the charging method from CC charging to CV charging when the output voltage of the secondary battery 150 reaches a predetermined switching voltage, but the switching timing of the charging method is the secondary battery. It is not limited to the condition of the output voltage of 150. For example, when the remaining amount of the secondary battery 150 reaches a predetermined value (for example, 80%), the charging method may be switched from CC charging to CV charging.

また、上述の実施形態での第１補正部１１２や、第２補正部１１３による電池残量の補正方法はあくまでも一例である。第１補正部１１２は、ＣＣ充電からＣＶ充電に切り替える時の二次電池１５０の充電状態に基づいて、その後の電池残量の値を補正するのであれば、任意の方法で電池残量を補正してよい。同様に、第２補正部１１３は、満充電時の二次電池１５０の充電状態に基づいて、その後の電池残量の値を補正するのであれば、任意の方法で電池残量を補正してよい。 Further, the method of correcting the remaining battery level by the first correction unit 112 and the second correction unit 113 in the above-described embodiment is merely an example. The first correction unit 112 corrects the remaining battery level by any method as long as it corrects the value of the remaining battery level after that based on the charging state of the secondary battery 150 when switching from CC charging to CV charging. You can do it. Similarly, the second correction unit 113 corrects the remaining battery level by any method as long as it corrects the value of the remaining battery level after that based on the state of charge of the secondary battery 150 at the time of full charge. Good.

なお、本発明は、上述の実施形態に限られるものではなく、様々に組み合わせたり変更したりすることが可能である。 The present invention is not limited to the above-described embodiment, and can be combined or modified in various ways.

例えば、上述の実施形態では、いずれも温度センサ１３３を備えているが、温度による特性の変化を考慮する必要が無い場合は、温度センサ１３３や温度特性補正部１３５，１１５は備えなくてもよい。 For example, in the above-described embodiment, the temperature sensor 133 is provided, but if it is not necessary to consider the change in the characteristics due to the temperature, the temperature sensor 133 and the temperature characteristic correction units 135 and 115 may not be provided. ..

また、電池電圧計測ＩＣ１３２は残量推測部１３４を備えるが温度特性補正部１３５は備えず、温度センサ１３３は制御部１１０に接続され、制御部１１０は、温度特性補正部１１５は備えるが残量推測部１１４は備えないような実施形態も考えられる。 Further, the battery voltage measuring IC 132 includes the remaining amount estimation unit 134 but not the temperature characteristic correction unit 135, the temperature sensor 133 is connected to the control unit 110, and the control unit 110 includes the temperature characteristic correction unit 115 but the remaining amount. An embodiment in which the guessing unit 114 is not provided is also conceivable.

また、上記の実施形態では、充電制御装置１０，１１が行う残量補正処理等のプログラムが、記憶部２０のＲＯＭに予め記憶されているものとして説明した。しかし、プログラムを、フレキシブルディスク、ＣＤ−ＲＯＭ（Ｃｏｍｐａｃｔ Ｄｉｓｃ Ｒｅａｄ Ｏｎｌｙ Ｍｅｍｏｒｙ）、ＤＶＤ（Ｄｉｇｉｔａｌ Ｖｅｒｓａｔｉｌｅ Ｄｉｓｃ）、ＭＯ（Ｍａｇｎｅｔｏ−Ｏｐｔｉｃａｌ Ｄｉｓｃ）、メモリカード、ＵＳＢ（Ｕｎｉｖｅｒｓａｌ Ｓｅｒｉａｌ Ｂｕｓ）メモリ等のコンピュータ読み取り可能な記録媒体に格納して配布し、そのプログラムをコンピュータに読み込んでインストールすることにより、上述の各機能を実現することができるコンピュータを構成してもよい。また、本発明に係るプログラムのデータを、通信回線を介して提供する媒体として、キャリアウェーブ（搬送波）も本発明に適用される。 Further, in the above embodiment, it has been described that the programs such as the remaining amount correction processing performed by the charge control devices 10 and 11 are stored in the ROM of the storage unit 20 in advance. However, the program can be a flexible disk, a CD-ROM (Compact Disk Read Only Memory), a DVD (Digital Versaille Disc), an MO (Magnet-Optical Disc), a memory card, a USB (Universal Serial Bus) memory, or the like. A computer capable of realizing each of the above-mentioned functions may be configured by storing and distributing the program in a recording medium, reading the program into a computer, and installing the program. A carrier wave is also applied to the present invention as a medium for providing data of a program according to the present invention via a communication line.

以上、本発明の好ましい実施形態について説明したが、本発明は係る特定の実施形態に限定されるものではなく、本発明には、特許請求の範囲に記載された発明とその均等の範囲が含まれる。以下に、本願出願の当初の特許請求の範囲に記載された発明を付記する。 Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the specific embodiment, and the present invention includes the invention described in the claims and the equivalent range thereof. Is done. The inventions described in the claims of the original application of the present application are described below.

（付記１）
二次電池の出力電圧を計測する電圧計測部と、
前記電圧計測部が計測した前記出力電圧から前記二次電池の残量を推測する残量推測部と、
前記二次電池の充電状態が所定の条件を満たす場合に充電パラメータを変化させる充電制御部と、
前記所定の条件を満たす場合に前記推測した二次電池の残量の値を補正する第１補正部と、
を備える充電制御装置。 (Appendix 1)
A voltage measuring unit that measures the output voltage of the secondary battery,
A remaining amount estimation unit that estimates the remaining amount of the secondary battery from the output voltage measured by the voltage measuring unit, and
A charge control unit that changes the charge parameter when the charge state of the secondary battery satisfies a predetermined condition,
A first correction unit that corrects the estimated remaining amount of the secondary battery when the predetermined condition is satisfied, and
Charge control device equipped with.

（付記２）
前記第１補正部は、前記充電制御部から前記充電パラメータを変化させたことを通知する通知信号を取得した場合、前記所定の条件を満たしたと判断し、前記推測した二次電池の残量の値を補正する、
付記１に記載の充電制御装置。 (Appendix 2)
When the first correction unit acquires a notification signal notifying that the charging parameter has been changed from the charge control unit, the first correction unit determines that the predetermined condition is satisfied, and determines that the estimated remaining amount of the secondary battery remains. Correct the value,
The charge control device according to Appendix 1.

（付記３）
前記第１補正部は、前記二次電池の残量の値を前記所定の条件に対応する値に補正する、
付記１または２に記載の充電制御装置。 (Appendix 3)
The first correction unit corrects the value of the remaining amount of the secondary battery to a value corresponding to the predetermined condition.
The charge control device according to Appendix 1 or 2.

（付記４）
前記充電制御部は、前記二次電池の出力電圧が所定の切替電圧に達したら、前記二次電池の充電状態が所定の条件を満たしたと判断し、前記充電パラメータを変化させる、
付記１から３のいずれか１つに記載の充電制御装置。 (Appendix 4)
When the output voltage of the secondary battery reaches a predetermined switching voltage, the charge control unit determines that the charge state of the secondary battery satisfies the predetermined condition, and changes the charge parameter.
The charge control device according to any one of Appendix 1 to 3.

（付記５）
前記充電制御部は、前記二次電池の残量が所定の値に達したら、前記二次電池の充電状態が所定の条件を満たしたと判断し、前記充電パラメータを変化させる、
付記１から３のいずれか１つに記載の充電制御装置。 (Appendix 5)
When the remaining amount of the secondary battery reaches a predetermined value, the charge control unit determines that the charge state of the secondary battery satisfies the predetermined condition, and changes the charge parameter.
The charge control device according to any one of Appendix 1 to 3.

（付記６）
前記充電制御部は、前記二次電池の充電状態が所定の条件を満たす場合に、前記充電パラメータを変化させることにより、前記二次電池の充電方式をＣＣ充電方式からＣＶ充電方式に切り替える、
付記１から５のいずれか１つに記載の充電制御装置。 (Appendix 6)
When the charging state of the secondary battery satisfies a predetermined condition, the charging control unit switches the charging method of the secondary battery from the CC charging method to the CV charging method by changing the charging parameter.
The charge control device according to any one of Appendix 1 to 5.

（付記７）
さらに、前記二次電池の温度を測定する温度測定部を備え、
前記残量推測部は、前記電圧計測部が計測した前記出力電圧と、前記温度測定部が測定した前記温度と、に基づいて、前記二次電池の残量を推測する、
付記１から６のいずれか１つに記載の充電制御装置。 (Appendix 7)
Further, a temperature measuring unit for measuring the temperature of the secondary battery is provided.
The remaining amount estimation unit estimates the remaining amount of the secondary battery based on the output voltage measured by the voltage measuring unit and the temperature measured by the temperature measuring unit.
The charge control device according to any one of Appendix 1 to 6.

（付記８）
さらに、前記充電制御部から前記二次電池の充電が完了したことを通知する通知信号を取得した場合、その時点で前記電圧計測部が計測した出力電圧が前記二次電池の残量１００％時の出力電圧であることに基づいて、前記推測した二次電池の残量の値を補正する第２補正部を備える、
付記１から７のいずれか１つに記載の充電制御装置。 (Appendix 8)
Further, when a notification signal for notifying that the charging of the secondary battery is completed is acquired from the charge control unit, the output voltage measured by the voltage measuring unit at that time is 100% of the remaining amount of the secondary battery. A second correction unit that corrects the estimated remaining value of the secondary battery based on the output voltage of
The charge control device according to any one of Appendix 1 to 7.

（付記９）
二次電池の充電状態が所定の条件を満たした場合に充電パラメータを変化させるパラメータ変化ステップと、
前記二次電池の出力電圧を計測し、計測した前記出力電圧から前記二次電池の残量を推測する残量推測ステップと、
前記所定の条件を満たした場合に前記推測した二次電池の残量の値を補正する第１補正ステップと、
を備える電池残量補正方法。 (Appendix 9)
A parameter change step that changes the charging parameter when the charging state of the secondary battery meets certain conditions,
A remaining amount estimation step of measuring the output voltage of the secondary battery and estimating the remaining amount of the secondary battery from the measured output voltage,
The first correction step of correcting the estimated remaining amount value of the secondary battery when the predetermined condition is satisfied, and
Battery level correction method.

（付記１０）
コンピュータに、
二次電池の充電状態が所定の条件を満たした場合に充電パラメータを変化させるパラメータ変化ステップ、
前記二次電池の出力電圧を計測し、計測した前記出力電圧から前記二次電池の残量を推測する残量推測ステップ、及び、
前記所定の条件を満たした場合に前記推測した二次電池の残量の値を補正する第１補正ステップ、
を実行させるためのプログラム。 (Appendix 10)
On the computer
A parameter change step that changes the charging parameters when the charging state of the secondary battery meets certain conditions.
A remaining amount estimation step of measuring the output voltage of the secondary battery and estimating the remaining amount of the secondary battery from the measured output voltage, and
The first correction step of correcting the estimated remaining amount value of the secondary battery when the predetermined condition is satisfied.
A program to execute.

１０，１１…充電制御装置、１００…マイクロコントローラ、１１０…制御部、１１１…充電ＩＣ制御部、１１２…第１補正部、１１３…第２補正部、１１４，１３４…残量推測部、１１５，１３５…温度特性補正部、１２０…記憶部、１３０…入出力部、１３１…充電制御ＩＣ、１３２，１３６…電池電圧計測ＩＣ、１３３…温度センサ、１４０…充電源、１５０…二次電池、２００，２０１，２０２…放電曲線 10, 11 ... Charge control device, 100 ... Microcontroller, 110 ... Control unit, 111 ... Charge IC control unit, 112 ... First correction unit, 113 ... Second correction unit, 114, 134 ... Remaining amount estimation unit, 115, 135 ... Temperature characteristic correction unit, 120 ... Storage unit, 130 ... Input / output unit, 131 ... Charge control IC, 132, 136 ... Battery voltage measurement IC, 133 ... Temperature sensor, 140 ... Charging source, 150 ... Secondary battery, 200 , 201, 202 ... Discharge curve

Claims (10)

二次電池の出力電圧を計測する電圧計測部と、
前記電圧計測部が計測した前記出力電圧から前記二次電池の残量を推測する残量推測部と、
前記二次電池の充電状態が所定の条件を満たす場合に充電パラメータを変化させる充電制御部と、
前記所定の条件を満たす場合に前記推測した二次電池の残量の値を補正する第１補正部と、
を備える充電制御装置。 A voltage measuring unit that measures the output voltage of the secondary battery,
A remaining amount estimation unit that estimates the remaining amount of the secondary battery from the output voltage measured by the voltage measuring unit, and
A charge control unit that changes the charge parameter when the charge state of the secondary battery satisfies a predetermined condition,
A first correction unit that corrects the estimated remaining amount of the secondary battery when the predetermined condition is satisfied, and
Charge control device equipped with. 前記第１補正部は、前記充電制御部から前記充電パラメータを変化させたことを通知する通知信号を取得した場合、前記所定の条件を満たしたと判断し、前記推測した二次電池の残量の値を補正する、
請求項１に記載の充電制御装置。 When the first correction unit acquires a notification signal notifying that the charging parameter has been changed from the charge control unit, the first correction unit determines that the predetermined condition is satisfied, and determines that the estimated remaining amount of the secondary battery remains. Correct the value,
The charge control device according to claim 1. 前記第１補正部は、前記二次電池の残量の値を前記所定の条件に対応する値に補正する、
請求項１または２に記載の充電制御装置。 The first correction unit corrects the value of the remaining amount of the secondary battery to a value corresponding to the predetermined condition.
The charge control device according to claim 1 or 2. 前記充電制御部は、前記二次電池の出力電圧が所定の切替電圧に達したら、前記二次電池の充電状態が所定の条件を満たしたと判断し、前記充電パラメータを変化させる、
請求項１から３のいずれか１項に記載の充電制御装置。 When the output voltage of the secondary battery reaches a predetermined switching voltage, the charge control unit determines that the charge state of the secondary battery satisfies the predetermined condition, and changes the charge parameter.
The charge control device according to any one of claims 1 to 3. 前記充電制御部は、前記二次電池の残量が所定の値に達したら、前記二次電池の充電状態が所定の条件を満たしたと判断し、前記充電パラメータを変化させる、
請求項１から３のいずれか１項に記載の充電制御装置。 When the remaining amount of the secondary battery reaches a predetermined value, the charge control unit determines that the charge state of the secondary battery satisfies the predetermined condition, and changes the charge parameter.
The charge control device according to any one of claims 1 to 3. 前記充電制御部は、前記二次電池の充電状態が所定の条件を満たす場合に、前記充電パラメータを変化させることにより、前記二次電池の充電方式をＣＣ充電方式からＣＶ充電方式に切り替える、
請求項１から５のいずれか１項に記載の充電制御装置。 When the charging state of the secondary battery satisfies a predetermined condition, the charging control unit switches the charging method of the secondary battery from the CC charging method to the CV charging method by changing the charging parameter.
The charge control device according to any one of claims 1 to 5. さらに、前記二次電池の温度を測定する温度測定部を備え、
前記残量推測部は、前記電圧計測部が計測した前記出力電圧と、前記温度測定部が測定した前記温度と、に基づいて、前記二次電池の残量を推測する、
請求項１から６のいずれか１項に記載の充電制御装置。 Further, a temperature measuring unit for measuring the temperature of the secondary battery is provided.
The remaining amount estimation unit estimates the remaining amount of the secondary battery based on the output voltage measured by the voltage measuring unit and the temperature measured by the temperature measuring unit.
The charge control device according to any one of claims 1 to 6. さらに、前記充電制御部から前記二次電池の充電が完了したことを通知する通知信号を取得した場合、その時点で前記電圧計測部が計測した出力電圧が前記二次電池の残量１００％時の出力電圧であることに基づいて、前記推測した二次電池の残量の値を補正する第２補正部を備える、
請求項１から７のいずれか１項に記載の充電制御装置。 Further, when a notification signal for notifying that the charging of the secondary battery is completed is acquired from the charge control unit, the output voltage measured by the voltage measuring unit at that time is 100% of the remaining amount of the secondary battery. A second correction unit that corrects the estimated remaining value of the secondary battery based on the output voltage of
The charge control device according to any one of claims 1 to 7. 二次電池の充電状態が所定の条件を満たした場合に充電パラメータを変化させるパラメータ変化ステップと、
前記二次電池の出力電圧を計測し、計測した前記出力電圧から前記二次電池の残量を推測する残量推測ステップと、
前記所定の条件を満たした場合に前記推測した二次電池の残量の値を補正する第１補正ステップと、
を備える電池残量補正方法。 A parameter change step that changes the charging parameter when the charging state of the secondary battery meets certain conditions,
A remaining amount estimation step of measuring the output voltage of the secondary battery and estimating the remaining amount of the secondary battery from the measured output voltage,
The first correction step of correcting the estimated remaining amount value of the secondary battery when the predetermined condition is satisfied, and
Battery level correction method. コンピュータに、
二次電池の充電状態が所定の条件を満たした場合に充電パラメータを変化させるパラメータ変化ステップ、
前記二次電池の出力電圧を計測し、計測した前記出力電圧から前記二次電池の残量を推測する残量推測ステップ、及び、
前記所定の条件を満たした場合に前記推測した二次電池の残量の値を補正する第１補正ステップ、
を実行させるためのプログラム。 On the computer
A parameter change step that changes the charging parameters when the charging state of the secondary battery meets certain conditions.
A remaining amount estimation step of measuring the output voltage of the secondary battery and estimating the remaining amount of the secondary battery from the measured output voltage, and
The first correction step of correcting the estimated remaining amount value of the secondary battery when the predetermined condition is satisfied.
A program to execute.
JP2019216009A 2019-11-29 2019-11-29 Charge control device, correction method of remaining battery capacity, and program Pending JP2021087320A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017225225A (en) * 2016-06-14 2017-12-21 株式会社豊田自動織機 Charging rate estimation device
WO2018181489A1 (en) * 2017-03-28 2018-10-04 株式会社Ｇｓユアサ Estimating device, electricity storage device, and estimating method
JP2020072555A (en) * 2018-10-31 2020-05-07 日本たばこ産業株式会社 Power supply unit for aerosol aspirator, and control method and control program thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017225225A (en) * 2016-06-14 2017-12-21 株式会社豊田自動織機 Charging rate estimation device
WO2018181489A1 (en) * 2017-03-28 2018-10-04 株式会社Ｇｓユアサ Estimating device, electricity storage device, and estimating method
JP2020072555A (en) * 2018-10-31 2020-05-07 日本たばこ産業株式会社 Power supply unit for aerosol aspirator, and control method and control program thereof

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