JP3428389B2 - Remaining charge time calculation method, remaining charge time display device and charging device - Google Patents
Remaining charge time calculation method, remaining charge time display device and charging deviceInfo
- Publication number
- JP3428389B2 JP3428389B2 JP24079597A JP24079597A JP3428389B2 JP 3428389 B2 JP3428389 B2 JP 3428389B2 JP 24079597 A JP24079597 A JP 24079597A JP 24079597 A JP24079597 A JP 24079597A JP 3428389 B2 JP3428389 B2 JP 3428389B2
- Authority
- JP
- Japan
- Prior art keywords
- charging
- time
- remaining
- remaining charge
- charge time
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Tests Of Electric Status Of Batteries (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、二次電池を充電す
る際の充電残時間演算方法、充電残時間表示装置および
充電装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remaining charge time calculation method, a remaining charge time display device and a charging device for charging a secondary battery.
【０００２】[0002]
【従来の技術】従来、この種の技術としては、特開平８
−２９８７２８号公報に開示されているように、充電中
の二次電池の電流および電圧を検出し、予め記憶回路に
記憶させた充電電圧特性曲線および充電電流特性曲線と
対比させて充電完了までの時間を算出し、表示器に表示
させる充電装置が知られている。また、二次電池の充電
率（ＳＯＣ：State Of Charge）と充電時間との関係を
予め求めておき、充電開始時のＳＯＣに基づいて所要充
電時間が設定されるタイマ制御方式の充電装置の場合に
は、タイマの充電残時間を表示器で表示することにより
充電完了までの充電残時間を表示することが可能であっ
た。2. Description of the Related Art Conventionally, as a technique of this kind, Japanese Patent Laid-Open No. Hei 8
As disclosed in JP-A-298728, the current and voltage of a secondary battery during charging are detected and compared with a charging voltage characteristic curve and a charging current characteristic curve stored in a storage circuit in advance, until completion of charging. There is known a charging device that calculates time and displays it on a display. In the case of a timer-controlled charging device, the relationship between the state of charge (SOC) of the secondary battery and the charging time is obtained in advance, and the required charging time is set based on the SOC at the start of charging. It was possible to display the remaining charge time until completion of charging by displaying the remaining charge time of the timer on the display.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上述した特
開平８−２９８７２８号公報の場合の各特性曲線やタイ
マ制御方式での所要充電時間は、電池の所定状態（例え
ば、初期状態）について予め求められたものである。し
かしながら、充電が完了するまでの時間は、電池の温
度，劣化状態および充電中の負荷状態等によって変化す
るため、表示器に表示されている充電残時間が零となる
まで充電を行った場合に、充電の過不足が生じるおそれ
があった。そこで、このような充電の過不足を避けよう
とすると、表示されている充電残時間が零となる前に充
電を停止したり、表示が零となった後にも充電を行った
りしなければならず、実際に充電が完了する時間と表示
されている充電残時間との間にずれが生じるおそれがあ
った。However, the characteristic curves and the required charging time in the timer control method in the case of the above-mentioned Japanese Patent Laid-Open No. 8-298728 are obtained in advance for a predetermined state (for example, initial state) of the battery. It has been done. However, the time to complete charging varies depending on the battery temperature, deterioration status, load status during charging, etc., so when charging is performed until the remaining charge time displayed on the display becomes zero. , There was a risk of excess or shortage of charging. Therefore, in order to avoid such excess or shortage of charging, it is necessary to stop charging before the displayed remaining charge time becomes zero, or to charge even after the display becomes zero. However, there is a possibility that a gap may occur between the time when charging is actually completed and the remaining charge time that is displayed.
【０００４】本発明の目的は、実際に充電が完了する時
間と計算によって求められる充電残時間との間のずれを
小さくすることができる充電残時間演算方法、および正
確な充電残時間が容易にわかる充電残時間表示装置や充
電装置を提供することにある。An object of the present invention is to provide a remaining charge time calculation method capable of reducing the difference between the actual charging completion time and the remaining charge time calculated, and an accurate remaining charge time. It is to provide a charge remaining time display device and a charging device that can be understood.
【０００５】[0005]
【課題を解決するための手段】(1)請求項１の発明によ
る充電残時間演算方法では、一定の電力で充電を行う定
電力充電と、一定の電流値で充電を開始して二次電池を
構成するセルのいずれかのセル電圧が所定電圧となる度
に電流値を所定量だけ減少させ、減少後の電流値で充電
を継続する定電流充電とを有していて、定電力充電で充
電を開始し、二次電池を構成するセルのいずれかのセル
電圧が所定電圧となったときに電流値を所定量だけ減少
させて前記定電流充電に移行する定電力定電流制御方式
で充電する。そして、定電力充電時においては、充電開
始時の前記二次電池の充電率に基づいて充電完了までの
所要充電時間を算出し、その所要充電時間から充電時間
を減算した時間を充電残時間とする。さらに、定電力充
電から定電流充電への移行時および定電流充電時におい
てセル電圧が所定電圧となる度に、減少後の電流値に基
づいて充電残時間を補正して補正残時間を算出する。そ
して、定電流充電時においては、算出された補正残時間
より補正残時間算出時からの経過時間を減算したものを
充電残時間とする。
(2)請求項２の発明による充電残時間表示装置では、請
求項１に記載の充電残時間演算方法で算出された充電残
時間を表示するようにした。
(3)発明の実施の形態を示す図１，２に対応付けて説明
すると、請求項３の発明は、請求項１に記載の充電残時
間演算方法を用いて複数の単セルＣ1〜Ｃnで構成される
二次電池１を充電する充電装置であって、（ａ）充電電
流Ｉを検出する電流センサ５と、（ｂ）定電力充電時に
おいては次式（３）により充電残時間ｔｃを算出し、定
電流充電時においては前記減少後に次式（４）により充
電残時間ｔｃを算出する演算装置２，６，７と、（ｃ）
演算装置２，６，７により算出された充電残時間ｔｃを
表示する表示器８とを備えることを特徴とする。なお、
所要充電時間Ａは充電開始前の二次電池１の充電率に基
づいて算出され、補正残時間は電流センサ５により検出
される充電電流Ｉから算出される。(1) In the method for calculating the remaining charge time according to the invention of claim 1, a constant power charging for charging with a constant power and a secondary battery for starting charging with a constant current value. Each time any one of the cells constituting the cell voltage reaches a predetermined voltage, the current value is reduced by a predetermined amount, and the constant current charging is continued at the reduced current value. When charging is started and the cell voltage of any of the cells that make up the secondary battery reaches a predetermined voltage, the current value is reduced by a predetermined amount and the constant current charging is performed. To do. Then, at the time of constant power charging, the required charging time until completion of charging is calculated based on the charging rate of the secondary battery at the start of charging, and the time obtained by subtracting the charging time from the required charging time is the remaining charging time. To do. Furthermore, each time the cell voltage reaches a predetermined voltage during the transition from constant power charging to constant current charging and during constant current charging, the remaining charge time is corrected based on the reduced current value to calculate the remaining correction time. . At the time of constant current charging, the remaining charge time is obtained by subtracting the elapsed time from the calculated remaining correction time from the calculated remaining correction time. (2) The remaining charge time display device according to the second aspect of the invention displays the remaining charge time calculated by the remaining charge time calculation method according to the first aspect. (3) In the following description with reference to FIGS. 1 and 2 showing an embodiment of the invention, the invention of claim 3 uses the remaining charge time calculation method according to claim 1 in a plurality of single cells C1 to Cn. A charging device for charging a secondary battery 1 configured, comprising: (a) a current sensor 5 for detecting a charging current I; and (b) constant-power charging, the remaining charging time tc is calculated by the following equation (3). And (c) calculating devices for calculating the remaining charge time tc by the following equation (4) after the decrease during constant-current charging.
The display device 8 displays the remaining charge time tc calculated by the arithmetic devices 2, 6, 7. In addition,
The required charging time A is calculated based on the charging rate of the secondary battery 1 before the start of charging, and the remaining correction time is calculated from the charging current I detected by the current sensor 5.
【数３】（所要充電時間Ａ）−（充電開始からの経過時
間）＝（充電残時間ｔｃ）…（３）[Equation 3] (Required charging time A)-(Elapsed time from start of charging) = (Remaining charging time tc) (3)
【数４】 （補正残時間）−（補正残時間算出時からの経過時間）＝（充電残時間ｔｃ） …（４）[Equation 4] (Correction remaining time)-(Elapsed time from calculation of correction remaining time) = (Charge remaining time tc) … (4)
【０００６】[0006]
【発明の効果】本発明によれば、定電力充電から定電流
充電への移行時および定電流充電の最中に、充電電流値
が減少する度にその充電電流値に基づいて充電残時間を
補正して補正残時間を算出し、その補正残時間より補正
残時間算出時からの経過時間を減算したものを充電残時
間としているので、電池の温度や劣化状態や充電中の負
荷状態を反映したより精度の高い充電残時間を演算する
ことができる。According to the present invention, each time the charging current value decreases during the transition from constant power charging to constant current charging and during constant current charging, the remaining charging time is calculated based on the charging current value. The remaining charge time is calculated by subtracting the elapsed time from the calculation of the remaining correction time after calculating the correction remaining time, and the remaining temperature of the battery, the deterioration state, and the load state during charging are reflected. The remaining charge time can be calculated with higher accuracy.
【０００７】なお、本発明の構成を説明する上記課題を
解決するための手段の項では、本発明を分かり易くする
ために発明の実施の形態の図を用いたが、これにより本
発明が発明の実施の形態に限定されるものではない。Incidentally, in the section of means for solving the above-mentioned problems for explaining the constitution of the present invention, the drawings of the embodiments of the invention are used for the sake of easy understanding of the present invention. However, the present invention is not limited to the embodiment.
【０００８】[0008]
【発明の実施の形態】以下、図１〜図４を参照して本発
明の実施の形態を説明する。図１は本発明による充電残
時間演算方法の一実施の形態を説明する図であり、二次
電池とその充電に用いられる充電装置の構成を示すブロ
ック図である。１は二次電池であってｎ個の単セルＣ1
〜Ｃnから構成され、例えば、リチウムイオン電池等が
用いられる。２は充電器３による二次電池１の充電制御
を行うバッテリコントローラであり、バッテリコントロ
ーラ２は電圧センサ４により検出される電池１の端子電
圧Ｖt，電流センサ５により検出される電池１に流れる
電流Ｉ，後述するセルコントローラ６からのセル電圧信
号Ｓcおよび記憶装置７に記憶されている電池１のＳＯ
Ｃに基づいて充電を制御する。セルコントローラ６は、
電池１の各単セルＣ1〜Ｃnの充放電制御を行うとともに
各単セルのセル電圧Ｖcを検出する。また、各セル電圧
Ｖcに関するセル電圧信号Ｓcは、各単セルＣ1〜Ｃnのい
ずれかのセル電圧Ｖcが所定電圧を越えた場合にオフか
らオンに変化する。８は充電器３に設けられた表示器で
あり、バッテリコントローラ２によって算出された充電
残時間を表示する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram illustrating an embodiment of a remaining charge time calculation method according to the present invention, and is a block diagram showing a configuration of a secondary battery and a charging device used for charging the secondary battery. 1 is a secondary battery, which is n single cells C1
To Cn, for example, a lithium ion battery or the like is used. Reference numeral 2 is a battery controller that controls the charging of the secondary battery 1 by the charger 3. The battery controller 2 is a terminal voltage Vt of the battery 1 detected by the voltage sensor 4, and a current flowing through the battery 1 detected by the current sensor 5. I, the cell voltage signal Sc from the cell controller 6 described later and the SO of the battery 1 stored in the storage device 7.
Control charging based on C. The cell controller 6 is
The charge / discharge control of each single cell C1 to Cn of the battery 1 is performed and the cell voltage Vc of each single cell is detected. The cell voltage signal Sc relating to each cell voltage Vc changes from off to on when the cell voltage Vc of any of the unit cells C1 to Cn exceeds a predetermined voltage. Reference numeral 8 is a display provided on the charger 3 and displays the remaining charge time calculated by the battery controller 2.
【０００９】なお、ＳＯＣの算出方法としては、例え
ば、電圧センサ４および電流センサ５によって検出され
た放電時の電圧および電流に基づいて、満充電状態から
充電開始時までの放電量の積算値を減算する方法等があ
り、ＳＯＣはバッテリコントローラ２によって算出され
記憶装置７に記憶される。As the SOC calculation method, for example, based on the voltage and current at the time of discharge detected by the voltage sensor 4 and the current sensor 5, the integrated value of the discharge amount from the fully charged state to the start of charging is calculated. The SOC may be calculated by the battery controller 2 and stored in the storage device 7.
【００１０】図２は二次電池の定電力定電流制御方式お
よび充電残時間を説明する図であり、（ａ）は充電電力
Ｐの変化を，（ｂ）は電池１を構成する単セルの内で最
もＳＯＣの高いセルのセル電圧Ｖcの変化を，（ｃ）は
充電電流Ｉの変化を，（ｄ）は充電残時間ｔcの変化を
示す図である。なお、各図において横軸は充電時間を表
している。定電力定電流制御方式では、図２（ａ）に示
すように定電力で充電（以下、これをＣＰモードと記
す）が開始される。この状態では、セルコントローラ６
のセル信号Ｓcはオンの状態である。ＣＰモードで充電
を続けると電圧Ｖcは徐々に上昇し、充電時間ｔ1におい
て所定の電圧Ｖmaxとなり、充電方法を定電流での充電
（以下、これをＣＣモードと記す）に移行する。なお、
図２（ｂ）は最もＳＯＣの高い単セルのセル電圧Ｖcの
変化を示したものであるが、他のセルについても同様の
変化を示し、いずれかのセルのセル電圧が所定値Ｖmax
になったならば、セルコントローラ６はセル電圧信号Ｓ
cをオフからオンに変化させる。2A and 2B are diagrams for explaining the constant power / constant current control method and the remaining charge time of the secondary battery. FIG. 2A shows a change in the charging power P, and FIG. 2B shows a single cell constituting the battery 1. FIG. 6 is a diagram showing a change in cell voltage Vc of a cell having the highest SOC, (c) shows a change in charging current I, and (d) shows a change in remaining charge time tc. In each figure, the horizontal axis represents charging time. In the constant power constant current control method, charging with constant power (hereinafter, referred to as CP mode) is started as shown in FIG. In this state, the cell controller 6
The cell signal Sc of is in the ON state. When the charging is continued in the CP mode, the voltage Vc gradually rises, reaches a predetermined voltage Vmax at the charging time t1, and the charging method shifts to the constant current charging (hereinafter, referred to as CC mode). In addition,
FIG. 2B shows a change in the cell voltage Vc of the single cell having the highest SOC, but the same change occurs in the other cells, and the cell voltage of any one of the cells is the predetermined value Vmax.
Then, the cell controller 6 outputs the cell voltage signal S
Change c from off to on.
【００１１】セル電圧ＶcがＶmaxになるとセルコントロ
ーラ６のセル電圧信号Ｓcがオフからオンに変化し、充
電電流Ｉを減少させる。このとき、充電電流Ｉが減少し
てセル電圧Ｖcが減少するとセル電圧信号Ｓcはオンから
オフに戻る。充電電流Ｉが減少するとセル電圧Ｖcはい
ったん減少するが、充電時間の経過とともに徐々に上昇
する。そして、時間ｔ2において再びセル電圧ＶcがＶma
xとなってセル電圧信号Ｓcがオフからオンに変化する
と、充電電流Ｉをさらに減少させる。このような手順が
繰返し行われ（図２に示した例では６回）、充電電流Ｉ
が充電終了目標電流Ｉminより小さくなったならば（時
間ｔ6）充電を終了する。When the cell voltage Vc reaches Vmax, the cell voltage signal Sc of the cell controller 6 changes from OFF to ON, and the charging current I is decreased. At this time, when the charging current I decreases and the cell voltage Vc decreases, the cell voltage signal Sc returns from on to off. When the charging current I decreases, the cell voltage Vc once decreases, but gradually increases with the lapse of charging time. Then, at time t2, the cell voltage Vc is again Vma.
When the cell voltage signal Sc becomes x and changes from off to on, the charging current I is further reduced. This procedure is repeated (six times in the example shown in FIG. 2), and the charging current I
Is smaller than the charging end target current Imin (time t6), the charging is ended.
【００１２】次に、図２および図３に示すフローチャー
トを参照しながら充電残時間の算出方法を説明する。図
３はバッテリコントローラで行われる充電残時間算出の
手順を示すフローチャートである。図３のフローは充電
器３による電池１の充電が開始されると同時にスタート
する。ステップＳ１では、記憶装置７に記憶されている
充電開始時のＳＯＣと充電残時間に関するテーブルＴ1
に基づいて、充電開始時における充電残時間ｔcを算出
する。図４（ａ）に示す表はテーブルＴ1の一例を示し
ており、例えばＳＯＣが４０（％）の場合にはテーブル
Ｔ1の時間Ａ＝５（ｈｒ）を充電残時間ｔcとする。ＳＯ
Ｃの値がテーブルＴ1に無い場合には（例えば、４５
（％）など）、その前後の値から直線近似で求めるよう
にしても良い。ステップＳ２では、ステップＳ１で算出
された充電開始時の充電残時間Ａを充電器３に送信し
て、表示器８に充電残時間Ａを表示する。Next, a method of calculating the remaining charge time will be described with reference to the flow charts shown in FIGS. FIG. 3 is a flow chart showing the procedure for calculating the remaining charge time performed by the battery controller. The flow of FIG. 3 starts at the same time that charging of the battery 1 by the charger 3 is started. In step S1, a table T1 regarding the SOC at the start of charging and the remaining charge time stored in the storage device 7
Based on, the remaining charge time tc at the start of charging is calculated. The table shown in FIG. 4A shows an example of the table T1. For example, when the SOC is 40 (%), the time A = 5 (hr) in the table T1 is used as the remaining charge time tc. SO
If the value of C is not in the table T1 (for example, 45
(%, Etc.), and values before and after that may be obtained by linear approximation. In step S2, the remaining charge time A at the start of charging calculated in step S1 is transmitted to the charger 3, and the remaining charge time A is displayed on the display unit 8.
【００１３】ステップＳ３はセル電圧信号Ｓcがオンに
変化したか否かを判断するステップであり、例えば、図
２に示したようにＣＰモードからＣＣモードに移行する
時間ｔ1でセル電圧信号ＳcがオンになるとステップＳ４
へ進み、それ以外の場合にはステップＳ５へ進む。な
お、このステップＳ３は１００（ｍｓｅｃ）毎に実行さ
れる。ステップＳ４に進んだ場合には、そのときの充電
電流値Ｉに基づいて充電残時間ｔcを図４（ｂ）のテー
ブルＴ2の時間Ｂに補正する。時間ｔ1では充電電流値Ｉ
は１４（Ａ）なので、充電残時間ｔcをテーブルＴ2の時
間Ｂ＝６０（ｍｉｎ）に補正する。ステップＳ５では、
充電残時間ｔcから１００（ｍｓｅｃ）を減算し、その
結果を充電器３に送信して表示器８に表示させステップ
Ｓ３へ戻る。ここで、ステップＳ５の充電残時間ｔc
は、ステップＳ３でステップＳ４へ進んだ場合には時間
Ｂであり、その他の場合には時間Ａとなっている。な
お、テーブルＴ1およびＴ2はそれぞれ記憶装置７に予め
記憶されている。Step S3 is a step of determining whether or not the cell voltage signal Sc has changed to ON. For example, as shown in FIG. 2, the cell voltage signal Sc is changed at the time t1 when the CP mode is changed to the CC mode. When turned on, step S4
Otherwise, to step S5 otherwise. The step S3 is executed every 100 (msec). When the process proceeds to step S4, the remaining charge time tc is corrected to the time B in the table T2 of FIG. 4B based on the charging current value I at that time. Charging current value I at time t1
Is 14 (A), the remaining charge time tc is corrected to time B = 60 (min) in the table T2. In step S5,
100 (msec) is subtracted from the remaining charge time tc, the result is transmitted to the charger 3 and displayed on the display 8, and the process returns to step S3. Here, the remaining charge time tc in step S5
Is time B when the process proceeds to step S4 in step S3, and is time A otherwise. The tables T1 and T2 are stored in the storage device 7 in advance.
【００１４】その後、充電が完了するまでステップＳ３
からステップＳ５までの動作が繰り返し行われる。上述
したようにステップＳ３は１００（ｍｓｅｃ）毎に実行
されるため、ステップＳ３からステップＳ５までの１サ
イクルは１００（ｍｓｅｃ）毎に行われ、表示は１００
（ｍｓｅｃ）毎に変更されることになる。After that, step S3 is performed until charging is completed.
The operations from to step S5 are repeated. Since step S3 is executed every 100 (msec) as described above, one cycle from step S3 to step S5 is performed every 100 (msec), and the display is 100
It will be changed every (msec).
【００１５】図２（ｄ）に示した充電残時間ｔcの例に
ついて説明すると、充電開始時の充電残時間はＡであっ
て、ＣＰモードからＣＣモードに移行する充電時間ｔ1
まで充電時間の経過とともに直線的に減少する。時間ｔ
1でセル電圧信号Ｓcがオンとなって電流値Ｉが１４
（Ａ）に減少すると、上述したように充電残時間ｔcは
テーブルＴ2の時間Ｂ＝６０（ｍｉｎ）に補正される。
その後、充電残時間ｔcは直線的に減少して時間ｔ2にお
いてｔc＝５０（ｍｉｎ）となる。時間ｔ2ではセル電圧
信号Ｓcが再びオンとなるので、そのときの電流値＝１
２（Ａ）から充電残時間ｔcはテーブルＴ2の時間Ｂ＝５
０（ｍｉｎ）に補正される。これは、時間ｔ1から直線
的に減少した値と同じなので、充電残時間ｔcは時間ｔ2
において階段状に変化せず直線的な変化を続け、時間ｔ
3においてｔc＝４０（ｍｉｎ）となる。Explaining an example of the remaining charge time tc shown in FIG. 2D, the remaining charge time at the start of charging is A, and the charging time t1 at which the CP mode is changed to the CC mode.
Decreases linearly with the passage of charging time. Time t
At 1, the cell voltage signal Sc is turned on and the current value I is 14
When it decreases to (A), the remaining charge time tc is corrected to the time B = 60 (min) in the table T2 as described above.
After that, the remaining charge time tc decreases linearly and becomes tc = 50 (min) at the time t2. At time t2, the cell voltage signal Sc turns on again, so the current value at that time = 1
From 2 (A), remaining charge time tc is time B = 5 in table T2
It is corrected to 0 (min). This is the same as the value linearly decreased from the time t1, so the remaining charge time tc is the time t2.
Does not change stepwise and continues linearly at time t
At 3, tc = 40 (min).
【００１６】さらに時間ｔ3になるとセル電圧信号Ｓcが
再びオンとなるので、そのときの電流値＝８（Ａ）から
充電残時間ｔcはテーブルＴ2の時間Ｂ＝３０（ｍｉｎ）
に補正される。その後、時間ｔ4，ｔ5，ｔ6においても
それぞれテーブルＴ2に基づいて充電残時間ｔcの補正が
行われる。時間ｔ6でセル電圧信号Ｓcがオンになると充
電電流値が充電停止電流値Ｉminより小さくなるので、
時間ｔ6において充電が停止され充電完了となる。When the time t3 is reached, the cell voltage signal Sc is turned on again. Therefore, from the current value = 8 (A) at that time, the remaining charge time tc is the time B of the table T2 = 30 (min).
Is corrected to. After that, at times t4, t5, and t6, the remaining charge time tc is corrected based on the table T2. When the cell voltage signal Sc is turned on at time t6, the charging current value becomes smaller than the charging stop current value Imin.
At time t6, the charging is stopped and the charging is completed.
【００１７】上述したようなＣＰモードからＣＣモード
へ移行した後の充電電流Ｉや各セル電圧Ｖcの変化は電
池を構成する各単セルＣ1〜Ｃnの温度や劣化状態や充電
中の負荷状態に依存しているので、セル電圧信号Ｓcが
オンとなる度に充電電流Ｉに基づいて充電残時間を補正
することにより、より精度の高い充電残時間を求めるこ
とができる。The change of the charging current I and the cell voltage Vc after shifting from the CP mode to the CC mode as described above depends on the temperature and deterioration state of each single cell C1 to Cn constituting the battery and the load state during charging. Therefore, the remaining charge time can be obtained with higher accuracy by correcting the remaining charge time based on the charging current I each time the cell voltage signal Sc is turned on.
【００１８】以上説明した実施の形態と特許請求の範囲
の要素との対応において、バッテリコントローラ２，記
憶装置７およびセルコントローラ６は演算装置を構成す
る。In the correspondence between the embodiment described above and the elements in the claims, the battery controller 2, the storage device 7 and the cell controller 6 constitute an arithmetic unit.
【図１】二次電池１とその充電に用いられる充電装置の
構成を示すブロック図。FIG. 1 is a block diagram showing a configuration of a secondary battery 1 and a charging device used for charging the secondary battery 1.
【図２】二次電池の定電力定電流制御方式および充電残
時間を説明する図であり、（ａ）は充電電力Ｐの変化
を，（ｂ）はセル電圧Ｖcの変化を，（ｃ）は充電電流
Ｉの変化を，（ｄ）は残存充電時間ｔcの変化を示す。2A and 2B are diagrams illustrating a constant power / constant current control method and a remaining charge time of a secondary battery, where FIG. 2A is a change in charging power P, FIG. 2B is a change in cell voltage Vc, and FIG. Shows the change of the charging current I, and (d) shows the change of the remaining charging time tc.
【図３】充電残時間算出の手順を示すフローチャート。FIG. 3 is a flowchart showing a procedure for calculating a remaining charge time.
【図４】テーブルＴ1，Ｔ2を示す図であり、（ａ）はテ
ーブルＴ1，（ｂ）はテーブルＴ2である。FIG. 4 is a diagram showing tables T1 and T2, in which (a) is table T1 and (b) is table T2.
１ 二次電池 ２ バッテリコントローラ ３ 充電器 ４ 電圧センサ ５ 電流センサ ６ セルコントローラ ７ 記憶装置 ８ 表示器 Ｃ1〜Ｃn 単セル Ｓc セル電圧信号 1 secondary battery 2 Battery controller 3 charger 4 voltage sensor 5 Current sensor 6 cell controller 7 storage device 8 display C1 to Cn single cell Sc cell voltage signal
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02J 7/00 - 7/12 H02J 7/34 - 7/36 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) H02J 7/ 00-7/12 H02J 7 /34-7/36
Claims (3)
一定の電流値で充電を開始して二次電池を構成するセル
のいずれかのセル電圧が所定電圧となる度に電流値を所
定量だけ減少させ、減少後の電流値で充電を継続する定
電流充電とを有し、前記定電力充電で充電を開始し、前
記二次電池を構成するセルのいずれかのセル電圧が所定
電圧となったときに電流値を所定量だけ減少させて前記
定電流充電に移行する定電力定電流制御方式で充電する
際の充電残時間演算方法であって、 前記定電力充電時においては、充電開始時の前記二次電
池の充電率に基づいて充電完了までの所要充電時間を算
出し、前記所要充電時間から充電時間を減算した時間を
充電残時間とし、 前記定電力充電から前記定電流充電への移行時および前
記定電流充電時において前記セル電圧が所定電圧となる
度に、前記減少後の電流値に基づいて前記充電残時間を
補正して補正残時間を算出し、 前記定電流充電時においては、前記算出された補正残時
間より補正残時間算出時からの経過時間を減算したもの
を充電残時間とすることを特徴とする充電残時間演算方
法。 1. Constant power charging for charging with constant power,
A cell that constitutes a secondary battery by starting charging at a constant current value
Whenever one of the cell voltages reaches the specified voltage, the current value is
Decrease by a fixed amount and continue charging at the reduced current value.
With current charging, start charging with the constant power charging,
The cell voltage of one of the cells that make up the secondary battery is specified
When the voltage is reached, the current value is reduced by a predetermined amount
Charge by constant power constant current control method that shifts to constant current charging
The method for calculating the remaining charge time at the time of charging at the constant power charging
Calculate the required charging time to complete charging based on the charging rate of the pond
Out, and subtract the charging time from the required charging time
Remaining charge time, when transition from constant power charging to constant current charging and before
The cell voltage becomes a predetermined voltage during constant current charging
The remaining charge time based on the current value after the decrease.
After correction, the remaining correction time is calculated, and during the constant current charging, the calculated remaining correction time
Subtracting the elapsed time from the correction remaining time calculation
Remaining charge time calculation method
Law.
算出された充電残時間を表示する充電残時間表示装置。 2. The remaining charge time calculation method according to claim 1.
A remaining charge time display device that displays the calculated remaining charge time.
用いて複数の単セルで構成される二次電池を充電する充
電装置であって、 （ａ）充電電流を検出する電流センサと、 （ｂ）前記定電力充電時においては、充電開始前の前記
二次電池の充電率に基づいて算出した所要充電時間に基
づいて、次式（１）により充電残時間を算出し、 【数１】 （所要充電時間）−（充電開始からの経過時間）＝（充電残時間）…（１）前記定電流充電時においては、前記減少後に 前記電流セ
ンサにより検出される充電電流から算出される前記補正
残時間に基づいて、次式（２）により充電残時間を算出
する演算装置と、 【数２】 （補正残時間）−（補正残時間算出時からの経過時間）＝（充電残時間） …（２） （ｃ）前記演算装置により算出された充電残時間を表示
する表示器と、 を備えることを特徴とする充電装置。3. The remaining charge time calculation method according to claim 1.
To charge a secondary battery composed of multiple single cells.
A collector, (a) a current sensor for detecting the charging current, (b) said in constant power charging, based on the required charging time calculated based on the charging rate of the secondary battery before starting charging
Then, the remaining charge time is calculated by the following equation (1): [Formula 1] (Required charge time)-(Elapsed time from start of charge) = (Remaining charge time) (1) At the time of constant current charge Is an arithmetic unit for calculating the remaining charge time by the following equation (2) based on the remaining correction time calculated from the charging current detected by the current sensor after the decrease, and )-(Elapsed time from the calculation of the correction remaining time) = (Charge remaining time) (2) (c) An indicator for displaying the charge remaining time calculated by the arithmetic unit, and Charging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24079597A JP3428389B2 (en) | 1997-09-05 | 1997-09-05 | Remaining charge time calculation method, remaining charge time display device and charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24079597A JP3428389B2 (en) | 1997-09-05 | 1997-09-05 | Remaining charge time calculation method, remaining charge time display device and charging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1189105A JPH1189105A (en) | 1999-03-30 |
| JP3428389B2 true JP3428389B2 (en) | 2003-07-22 |
Family
ID=17064811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24079597A Expired - Fee Related JP3428389B2 (en) | 1997-09-05 | 1997-09-05 | Remaining charge time calculation method, remaining charge time display device and charging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3428389B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100067A (en) * | 2016-08-12 | 2016-11-09 | 许继电气股份有限公司 | A kind of charging electric vehicle and charge computational methods remaining time and device |
| CN109061486A (en) * | 2018-06-29 | 2018-12-21 | 深圳市科列技术股份有限公司 | A kind of method and system of determining constant-current charge stop time point |
| CN115347636A (en) * | 2022-08-01 | 2022-11-15 | 北京小米移动软件有限公司 | Method and device for determining charging time and storage medium |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4946749B2 (en) | 2007-09-14 | 2012-06-06 | 三菱自動車工業株式会社 | Vehicle battery control device |
| JP5505932B2 (en) * | 2010-07-16 | 2014-05-28 | トヨタ自動車株式会社 | Charging system |
| CN102738871B (en) | 2012-07-20 | 2014-09-10 | 腾讯科技（深圳）有限公司 | Charging treatment method and system for mobile device |
| KR101660194B1 (en) * | 2012-09-21 | 2016-09-26 | 닛산 지도우샤 가부시키가이샤 | Charging control device and charging time calculation method |
| EP2899841B1 (en) | 2012-09-21 | 2019-11-13 | Nissan Motor Co., Ltd | Charging control device and charging time calculation method |
| WO2014045942A1 (en) | 2012-09-24 | 2014-03-27 | 日産自動車株式会社 | Charging control device and charging control method |
| JP5742998B2 (en) * | 2014-04-08 | 2015-07-01 | 三菱自動車工業株式会社 | Charging time estimation device and charging time estimation method |
| JP5742999B2 (en) * | 2014-04-08 | 2015-07-01 | 三菱自動車工業株式会社 | Charging time estimation device and charging time estimation method |
| CN112666463B (en) * | 2020-12-31 | 2023-06-30 | 蜂巢能源科技有限公司 | Battery charging remaining time correction display method, correction device and storage device |
| CN116529616A (en) * | 2021-03-31 | 2023-08-01 | 宁德时代新能源科技股份有限公司 | Method and device for estimating remaining charging time of battery and battery management system |
| CN114200315B (en) * | 2021-09-28 | 2023-07-04 | 岚图汽车科技有限公司 | Method and device for predicting remaining charging time, electronic equipment and storage medium |
| CN113985291B (en) * | 2021-10-31 | 2023-12-05 | 三一汽车制造有限公司 | Residual charge time estimation method and device and vehicle control equipment |
| CN114407727A (en) * | 2022-01-24 | 2022-04-29 | 四川野马汽车股份有限公司 | A method and system for estimating remaining time of electric vehicle charging |
| DE102023200315A1 (en) * | 2023-01-17 | 2024-07-18 | Stellantis Auto Sas | Method and device for determining a charging time of an electric battery |
| CN118534323A (en) * | 2023-02-21 | 2024-08-23 | 比亚迪股份有限公司 | Method and device for calculating remaining charging time of battery |
| CN117429314B (en) * | 2023-10-31 | 2025-02-11 | 岚图汽车科技有限公司 | A method and device for displaying remaining charging time |
| CN118739510B (en) * | 2024-09-03 | 2025-01-03 | 深圳市德兰明海新能源股份有限公司 | Calculation method and device for shortest remaining charging duration and battery system |
-
1997
- 1997-09-05 JP JP24079597A patent/JP3428389B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100067A (en) * | 2016-08-12 | 2016-11-09 | 许继电气股份有限公司 | A kind of charging electric vehicle and charge computational methods remaining time and device |
| CN109061486A (en) * | 2018-06-29 | 2018-12-21 | 深圳市科列技术股份有限公司 | A kind of method and system of determining constant-current charge stop time point |
| CN115347636A (en) * | 2022-08-01 | 2022-11-15 | 北京小米移动软件有限公司 | Method and device for determining charging time and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1189105A (en) | 1999-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3428389B2 (en) | Remaining charge time calculation method, remaining charge time display device and charging device | |
| US6107779A (en) | Apparatus for detecting remaining capacity of battery | |
| JP4157317B2 (en) | Status detection device and various devices using the same | |
| EP0600234B1 (en) | System for displaying residual capacity of a battery | |
| US6495992B1 (en) | Method and apparatus for charging batteries utilizing heterogeneous reaction kinetics | |
| EP3664247A1 (en) | Charging time computation method and charge control device | |
| US5723971A (en) | Apparatus for charging a battery for a charge time determined based on the depth of discharge | |
| EP1662269A1 (en) | Battery remaining power calculating method, battery remaining power calculating device, and battery remaining power calculating program | |
| CN112051505B (en) | SOC correction method, device, medium and equipment for power battery | |
| US11214168B2 (en) | Deterioration state computation method and deterioration state computation device | |
| EP2279425B1 (en) | Method of estimation of the state of charge of a battery | |
| US6294894B1 (en) | Rechargeable battery arrangement | |
| JP2002010503A (en) | Charge and discharge device and charging and discharging method | |
| JP3376832B2 (en) | Battery charge / discharge power calculation method | |
| JP3453821B2 (en) | Battery remaining capacity measurement device | |
| JP4304923B2 (en) | Secondary battery remaining capacity estimating apparatus and remaining capacity estimating method | |
| EP1100171B1 (en) | Device and method for determining state of charge | |
| JP3225812B2 (en) | Battery status management device | |
| JP2023137389A (en) | Battery condition estimation device and battery condition estimation method | |
| US20240044994A1 (en) | Battery deterioration diagnosis device and battery deterioration diagnosis method | |
| JPH11136876A (en) | How to charge lead storage batteries | |
| JP2023024201A (en) | Battery management device and method | |
| JP3572381B2 (en) | Calculation method of rechargeable battery charge capacity | |
| JP6672976B2 (en) | Charge amount calculation device, computer program, and charge amount calculation method | |
| JP3346182B2 (en) | Method for estimating the remaining capacity of electric vehicle batteries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080516 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090516 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090516 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100516 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110516 Year of fee payment: 8 |
|
| LAPS | Cancellation because of no payment of annual fees |
