JP2006338944A - Battery control device - Google Patents

Battery control device Download PDF

Info

Publication number
JP2006338944A
JP2006338944A JP2005160041A JP2005160041A JP2006338944A JP 2006338944 A JP2006338944 A JP 2006338944A JP 2005160041 A JP2005160041 A JP 2005160041A JP 2005160041 A JP2005160041 A JP 2005160041A JP 2006338944 A JP2006338944 A JP 2006338944A
Authority
JP
Japan
Prior art keywords
internal resistance
battery
value
control device
battery control
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.)
Granted
Application number
JP2005160041A
Other languages
Japanese (ja)
Other versions
JP5130608B2 (en
Inventor
Takaki Uejima
宇貴 上島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP2005160041A priority Critical patent/JP5130608B2/en
Publication of JP2006338944A publication Critical patent/JP2006338944A/en
Application granted granted Critical
Publication of JP5130608B2 publication Critical patent/JP5130608B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an abrupt drop of a voltage due to a diffusion limit in charging or discharging a battery. <P>SOLUTION: When internal resistance of an assembled battery 1 is calculated and the increment of the internal resistance in a certain period exceeds a predetermined value, an upper-limit value of power of the battery capable of being output therefrom is reduced. Thereby, abrupt increase of the internal resistance when a diffusion limit occurs is suppressed and the voltage of the battery is prevented from abruptly dropping. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、電池の制御装置に関し、特に、電池の内部抵抗に基づいて、電池の出力可能パワーの上限値を制限する電池の制御装置に関する。   The present invention relates to a battery control device, and more particularly, to a battery control device that limits an upper limit value of output power of a battery based on internal resistance of the battery.

従来、組電池を構成する複数のセルの過放電を検出することによって、電池性能の劣化を防止する過放電セル検出装置が知られている(特許文献1参照)。   2. Description of the Related Art Conventionally, an overdischarge cell detection device that prevents deterioration of battery performance by detecting overdischarge of a plurality of cells constituting an assembled battery is known (see Patent Document 1).

特開2000−150002号公報JP 2000-150002 A

しかしながら、リチウムイオン電池等では、電池の充放電時間が一定時間を超えると、急激に内部抵抗が上昇する拡散限界という現象が生じることが確認されている。拡散限界が生じると、電池の残存容量がほとんど変化しない状態で、電池の電圧が低下するため、電池の出力可能パワーが急激に低下してしまうという問題があった。   However, in a lithium ion battery or the like, it has been confirmed that a phenomenon called a diffusion limit in which the internal resistance rapidly increases occurs when the charge / discharge time of the battery exceeds a certain time. When the diffusion limit occurs, there is a problem that the output power of the battery is drastically lowered because the voltage of the battery is lowered while the remaining capacity of the battery hardly changes.

本発明による電池制御装置は、所定期間内における電池の内部抵抗の上昇幅が所定値を越えたことが検出されると、電池の出力可能パワーの上限値を小さくすることを特徴とする。   The battery control device according to the present invention is characterized in that when it is detected that the increase in the internal resistance of the battery within a predetermined period exceeds a predetermined value, the upper limit value of the output power of the battery is reduced.

本発明による電池制御装置によれば、所定期間内における電池の内部抵抗の上昇幅が所定値を越えたことが検出されると、電池の出力可能パワーの上限値を小さくするので、拡散限界による電池電圧の急激な低下を抑制することができる。   According to the battery control device of the present invention, when it is detected that the increase width of the internal resistance of the battery within a predetermined period exceeds a predetermined value, the upper limit value of the battery output power is reduced. A sudden drop in battery voltage can be suppressed.

図1は、一実施の形態における電池の制御装置を搭載した電気自動車の駆動システムを示す図である。組電池(駆動用バッテリ)1は、複数の薄型ラミネート電池(セル)C1〜Cnを直列に接続して構成されている。組電池1の直流電圧は、インバータ2において、3相交流電圧に変換されて、電気自動車の走行駆動源である3相交流モータ3に印加される。組電池1と、インバータ2との間を結ぶ強電ハーネス9には、強電リレー8aおよび8bが設けられている。強電リレー8a,8bのオン/オフは、電池制御装置7によって制御される。   FIG. 1 is a diagram showing a drive system for an electric vehicle equipped with a battery control device according to an embodiment. The assembled battery (driving battery) 1 is configured by connecting a plurality of thin laminated batteries (cells) C1 to Cn in series. The DC voltage of the assembled battery 1 is converted into a three-phase AC voltage in the inverter 2 and applied to a three-phase AC motor 3 that is a travel drive source of the electric vehicle. High-voltage relays 8 a and 8 b are provided in the high-voltage harness 9 that connects the assembled battery 1 and the inverter 2. On / off of the high voltage relays 8 a and 8 b is controlled by the battery control device 7.

電圧センサ4は、組電池1の総電圧BATVOLを検出する。電流センサ5は、組電池1の充電電流および放電電流(以下、まとめて充放電電流BATCURと記載する)を検出する。ここでは、充電電流検出時に正の値が検出され、放電電流検出時に負の値が検出されるものとする。サーミスタ6は、組電池1の温度を検出する。   The voltage sensor 4 detects the total voltage BATVOL of the assembled battery 1. The current sensor 5 detects a charging current and a discharging current (hereinafter collectively referred to as a charging / discharging current BATCUR) of the assembled battery 1. Here, a positive value is detected when the charging current is detected, and a negative value is detected when the discharging current is detected. The thermistor 6 detects the temperature of the assembled battery 1.

電池制御装置7は、CPU7a,ROM7b,RAM7c,および、タイマ7dを備えている。電池制御装置7は、電圧センサ4により検出される電圧値BATVOL、電流センサ5により検出される電流値BATCUR、および、サーミスタ6により検出される組電池1の温度を取得し、後述する方法によって、組電池1の内部抵抗値を求めるとともに、求めた内部抵抗値に基づいて、組電池1の出力可能パワーの上限値を制限する。なお、電池制御装置7と、車両制御装置10との間は、通信線で接続されており、様々なデータが両者の間でやり取りされる。   The battery control device 7 includes a CPU 7a, a ROM 7b, a RAM 7c, and a timer 7d. The battery control device 7 acquires the voltage value BATVOL detected by the voltage sensor 4, the current value BATCUR detected by the current sensor 5, and the temperature of the assembled battery 1 detected by the thermistor 6, and by a method described later, While calculating | requiring the internal resistance value of the assembled battery 1, based on the calculated | required internal resistance value, the upper limit of the output power of the assembled battery 1 is restrict | limited. Note that the battery control device 7 and the vehicle control device 10 are connected by a communication line, and various data are exchanged between them.

図2は、組電池1を構成する薄型ラミネート電池C1〜Cnの詳細な構成を示す図である。この薄型ラミネート電池は、マンガン系リチウムイオン電池であり、シリコンゴム、ポリエステルフィルムからなる2枚の高摩擦シート層で外側を覆われた2枚の防湿性多層フィルム11,12で発電要素13を収納している。発電要素13には、薄型電極一体型正極14、薄型電極一体型負極15、電解質などが含まれている。2枚の防湿性多層フィルム11,12は、熱融着、または、接着剤による貼り付けで封止されている。   FIG. 2 is a diagram showing a detailed configuration of the thin laminated batteries C <b> 1 to Cn constituting the assembled battery 1. This thin laminate battery is a manganese-based lithium ion battery, and the power generation element 13 is housed by two moisture-proof multilayer films 11 and 12 covered with two high friction sheet layers made of silicon rubber and polyester film. is doing. The power generation element 13 includes a thin electrode integrated positive electrode 14, a thin electrode integrated negative electrode 15, an electrolyte, and the like. The two moisture-proof multilayer films 11 and 12 are sealed by heat fusion or pasting with an adhesive.

図3〜図5は、薄型ラミネート電池C1〜Cnの内部抵抗特性を示す図である。図3は、薄型ラミネート電池のSOC(%)と、内部抵抗との関係を示す図である。図3に示すように、薄型ラミネート電池のSOCが大きいほど、内部抵抗は小さくなる。   3 to 5 are diagrams showing the internal resistance characteristics of the thin laminated batteries C1 to Cn. FIG. 3 is a diagram showing the relationship between the SOC (%) of the thin laminated battery and the internal resistance. As shown in FIG. 3, the internal resistance decreases as the SOC of the thin laminated battery increases.

図4は、薄型ラミネート電池の温度(℃)と、内部抵抗との関係を示す図である。図4に示すように、薄型ラミネート電池の温度が高くなるほど、内部抵抗は小さくなる。図5は、薄型ラミネート電池の放電時間(s)と、内部抵抗との関係を示す図である。図5に示すように、薄型ラミネート電池の放電時間が長くなるほど、内部抵抗は大きくなる。また、同じ放電時間でも、図5に示すように、放電電流が大きくなるほど、内部抵抗は大きくなる。   FIG. 4 is a diagram showing the relationship between the temperature (° C.) of the thin laminated battery and the internal resistance. As shown in FIG. 4, the internal resistance decreases as the temperature of the thin laminated battery increases. FIG. 5 is a diagram showing the relationship between the discharge time (s) of the thin laminated battery and the internal resistance. As shown in FIG. 5, the internal resistance increases as the discharge time of the thin laminated battery increases. Further, as shown in FIG. 5, the internal resistance increases as the discharge current increases even at the same discharge time.

図6および図7は、一実施の形態における電池制御装置によって行われる制御内容を示すフローチャートである。図示しない車両のキースイッチがオンされて、電池制御装置7に電源が供給されると、電池制御装置7は、ステップS10の処理を開始する。ステップS10では、組電池1のSOCを演算する。例えば、組電池1の総電圧とSOCとの関係を示すテーブルを予め用意しておき、電圧センサ4により検出される電圧値に基づいて、テーブルを参照することにより、組電池1のSOCを求めることができる。組電池1のSOCを求めると、ステップS20に進む。   FIG. 6 and FIG. 7 are flowcharts showing the contents of control performed by the battery control device in one embodiment. When a key switch of a vehicle (not shown) is turned on and power is supplied to the battery control device 7, the battery control device 7 starts processing in step S10. In step S10, the SOC of the battery pack 1 is calculated. For example, a table showing the relationship between the total voltage of the assembled battery 1 and the SOC is prepared in advance, and the SOC of the assembled battery 1 is obtained by referring to the table based on the voltage value detected by the voltage sensor 4. be able to. When the SOC of the battery pack 1 is obtained, the process proceeds to step S20.

ステップS20では、組電池1の内部抵抗初期値RINTを求める。ここでは、組電池1のSOCと内部抵抗との関係を示すテーブルを予め用意しておき、ステップS10で求めたSOCに基づいて、電圧−SOCテーブルを参照することにより、内部抵抗初期値RINTを求める。組電池1の内部抵抗初期値RINTを求めると、ステップS30に進む。   In step S20, an internal resistance initial value RINT of the assembled battery 1 is obtained. Here, a table showing the relationship between the SOC of the assembled battery 1 and the internal resistance is prepared in advance, and the internal resistance initial value RINT is determined by referring to the voltage-SOC table based on the SOC obtained in step S10. Ask. When the internal resistance initial value RINT of the assembled battery 1 is obtained, the process proceeds to step S30.

ステップS30では、サーミスタ6によって検出される組電池1の温度を取得して、ステップS40に進む。ステップS40では、ステップS30で取得した組電池1の温度に基づいて、温度劣化係数KCAPKを求める。ここでも、組電池1の温度と、温度劣化係数KCAPKとの関係を示すテーブルを予め用意しておいて、このテーブルを参照することにより、温度劣化係数KCAPKを求める。温度劣化係数KCAPKを求めると、ステップS50に進む。   In step S30, the temperature of the assembled battery 1 detected by the thermistor 6 is acquired, and the process proceeds to step S40. In step S40, a temperature deterioration coefficient KCAPK is obtained based on the temperature of the assembled battery 1 acquired in step S30. Again, a table showing the relationship between the temperature of the assembled battery 1 and the temperature deterioration coefficient KCAPK is prepared in advance, and the temperature deterioration coefficient KCAPK is obtained by referring to this table. When the temperature deterioration coefficient KCAPK is obtained, the process proceeds to step S50.

ステップS50では、ステップS40で求めた温度劣化係数KCAPKに基づいて、次式(1)より、組電池1の内部抵抗値を補正する。
RBAT=RINT/KCAPK (1)
ただし、RBATは、補正後の内部抵抗値を表している。
In step S50, the internal resistance value of the assembled battery 1 is corrected from the following equation (1) based on the temperature deterioration coefficient KCAPK obtained in step S40.
RBAT = RINT / KCAPK (1)
However, RBAT represents the corrected internal resistance value.

ステップS50に続くステップS60では、電流センサ5によって検出された充放電電流BATCURの絶対値(放電電流の大きさ)が第1の電流しきい値BATCUR1以上であるか否かを判定する。充放電電流BATCURの絶対値が第1の電流しきい値BATCUR1以上であると判定するとステップS80に進み、第1の電流しきい値BATCUR1未満であると判定すると、ステップS70に進む。ステップS70では、タイマ7dのタイマ値をクリアして、ステップS10に戻る。   In step S60 following step S50, it is determined whether or not the absolute value (the magnitude of the discharge current) of the charge / discharge current BATCUR detected by the current sensor 5 is equal to or greater than the first current threshold value BATCUR1. If it is determined that the absolute value of the charge / discharge current BATCUR is greater than or equal to the first current threshold value BATCUR1, the process proceeds to step S80, and if it is determined that it is less than the first current threshold value BATCUR1, the process proceeds to step S70. In step S70, the timer value of timer 7d is cleared, and the process returns to step S10.

一方、ステップS80では、放電飽和フラグF1が1であるか否かを判定する。この放電飽和フラグF1は、後述するステップS180において1にセットされるものであり、初期値は0となっている。放電飽和フラグF1が1であると判定するとステップS100に進み、0であると判定すると、ステップS90に進む。ステップS90では、タイマ7dによるカウントを開始して、ステップS100に進む。   On the other hand, in step S80, it is determined whether or not the discharge saturation flag F1 is 1. This discharge saturation flag F1 is set to 1 in step S180 described later, and its initial value is 0. If it is determined that the discharge saturation flag F1 is 1, the process proceeds to step S100, and if it is determined to be 0, the process proceeds to step S90. In step S90, the timer 7d starts counting and proceeds to step S100.

ステップS100では、電流センサ5によって検出された充放電電流BATCURの絶対値が第2の電流しきい値BATCUR2以上であるか否かを判定する。第2の電流しきい値BATCUR2は、第1の電流しきい値BATCUR1より大きい値とする。充放電電流BATCURの絶対値が第2の電流しきい値BATCUR2以上であると判定するとステップS110に進み、第2の電流しきい値BATCUR2未満であると判定すると、ステップS120に進む。   In step S100, it is determined whether or not the absolute value of the charge / discharge current BATCUR detected by the current sensor 5 is equal to or greater than the second current threshold value BATCUR2. The second current threshold value BATCUR2 is larger than the first current threshold value BATCUR1. If it is determined that the absolute value of the charge / discharge current BATCUR is greater than or equal to the second current threshold value BATCUR2, the process proceeds to step S110, and if it is determined that it is less than the second current threshold value BATCUR2, the process proceeds to step S120.

ステップS110では、電流センサ5によって検出された充放電電流BATCURの絶対値が第3の電流しきい値BATCUR3以上であるか否かを判定する。第3の電流しきい値BATCUR3は、第2の電流しきい値BATCUR2より大きい値とする。充放電電流BATCURの絶対値が第3の電流しきい値BATCUR3以上であると判定するとステップS140に進み、第3の電流しきい値BATCUR3未満であると判定すると、ステップS130に進む。   In step S110, it is determined whether or not the absolute value of the charge / discharge current BATCUR detected by the current sensor 5 is equal to or greater than a third current threshold value BATCUR3. The third current threshold value BATCUR3 is set to a value larger than the second current threshold value BATCUR2. If it is determined that the absolute value of the charge / discharge current BATCUR is greater than or equal to the third current threshold value BATCUR3, the process proceeds to step S140. If it is determined that the absolute value of the charge / discharge current BATCUR is less than the third current threshold value BATCUR3, the process proceeds to step S130.

ステップS120〜ステップS140では、組電池1の放電時間に基づいて、内部抵抗RBATの値を補正する。ステップS120では、タイマ7dのタイマ値と内部抵抗補正値との関係を示すテーブルT1を参照して、タイマ7dのタイマ値に基づいて、内部抵抗補正値を求めて、内部抵抗RBATの値を補正する。なお、テーブルT1は、放電電流の大きさが第2の電流しきい値BATCUR2未満の場合の内部抵抗補正値を求めるためのテーブルである。内部抵抗RBATの値を補正すると、図7に示すフローチャートのステップS150に進む。   In steps S120 to S140, the value of the internal resistance RBAT is corrected based on the discharge time of the battery pack 1. In step S120, the internal resistance correction value is obtained based on the timer value of the timer 7d with reference to the table T1 indicating the relationship between the timer value of the timer 7d and the internal resistance correction value, and the value of the internal resistance RBAT is corrected. To do. The table T1 is a table for obtaining an internal resistance correction value when the magnitude of the discharge current is less than the second current threshold value BATCUR2. When the value of the internal resistance RBAT is corrected, the process proceeds to step S150 in the flowchart shown in FIG.

ステップS130では、タイマ7dのタイマ値と内部抵抗補正値との関係を示すテーブルT2を参照して、タイマ7dのタイマ値に基づいて、内部抵抗補正値を求めて、内部抵抗RBATの値を補正する。テーブルT2は、放電電流の大きさが第2の電流しきい値BATCUR2以上であり、かつ、第3の電流しきい値BATCUR3未満の場合の内部抵抗補正値を求めるためのテーブルである。内部抵抗RBATの値を補正すると、図7に示すフローチャートのステップS150に進む。   In step S130, the internal resistance correction value is obtained based on the timer value of the timer 7d with reference to the table T2 showing the relationship between the timer value of the timer 7d and the internal resistance correction value, and the value of the internal resistance RBAT is corrected. To do. The table T2 is a table for obtaining an internal resistance correction value when the magnitude of the discharge current is equal to or greater than the second current threshold value BATCUR2 and less than the third current threshold value BATCUR3. When the value of the internal resistance RBAT is corrected, the process proceeds to step S150 in the flowchart shown in FIG.

ステップS140では、タイマ7dのタイマ値と内部抵抗補正値との関係を示すテーブルT3を参照して、タイマ7dのタイマ値に基づいて、内部抵抗補正値を求めて、内部抵抗RBATの値を補正する。テーブルT3は、放電電流の大きさが第3の電流しきい値BATCUR3以上の場合の内部抵抗補正値を求めるためのテーブルである。内部抵抗RBATの値を補正すると、図7に示すフローチャートのステップS150に進む。   In step S140, the internal resistance correction value is obtained based on the timer value of the timer 7d with reference to the table T3 indicating the relationship between the timer value of the timer 7d and the internal resistance correction value, and the value of the internal resistance RBAT is corrected. To do. The table T3 is a table for obtaining an internal resistance correction value when the magnitude of the discharge current is equal to or greater than the third current threshold value BATCUR3. When the value of the internal resistance RBAT is corrected, the process proceeds to step S150 in the flowchart shown in FIG.

ステップS150では、タイマ7dのタイマ値が所定値T1以上であるか否かを判定する。タイマ7dのタイマ値が所定値T1未満であると判定すると、ステップS60に戻り、上述した処理を繰り返し行う。一方、タイマ7dのタイマ値が所定値T1以上であると判定すると、ステップS160に進む。ステップS160では、タイマ7dのタイマ値をT1で固定して、ステップS170に進む。ステップS170では、演算した現在の内部抵抗値RBATの値を保持するようにして、ステップS180に進む。   In step S150, it is determined whether the timer value of the timer 7d is equal to or greater than a predetermined value T1. If it is determined that the timer value of the timer 7d is less than the predetermined value T1, the process returns to step S60 and the above-described processing is repeated. On the other hand, if it is determined that the timer value of the timer 7d is equal to or greater than the predetermined value T1, the process proceeds to step S160. In step S160, the timer value of timer 7d is fixed at T1, and the process proceeds to step S170. In step S170, the calculated current internal resistance value RBAT is held, and the process proceeds to step S180.

ステップS180では、放電時間が所定値T1以上となったので、放電飽和フラグF1を1にセットして、ステップS190に進む。ステップS190では、シャットダウン要求があったか否かを判定する。図示しない車両のキースイッチがオフされることによって、シャットダウン要求があったと判定すると、電池制御装置7による処理を終了し、シャットダウン要求がないと判定すると、ステップS60に戻る。   In step S180, since the discharge time is equal to or greater than the predetermined value T1, the discharge saturation flag F1 is set to 1 and the process proceeds to step S190. In step S190, it is determined whether there has been a shutdown request. If it is determined that there is a shutdown request by turning off a key switch of a vehicle (not shown), the process by the battery control device 7 is terminated. If it is determined that there is no shutdown request, the process returns to step S60.

図8は、組電池1の内部抵抗の上昇異常を検出する処理内容を示すフローチャートである。図示しない車両のキースイッチがオンされると、電池制御装置7は、ステップS200の処理を開始する。ステップS200では、内部抵抗RBATが演算済みであるか否かを判定する。内部抵抗RBATがまだ演算されていないと判定するとステップS200で待機し、演算済みであると判定すると、ステップS210に進む。   FIG. 8 is a flowchart showing the processing contents for detecting an abnormal increase in internal resistance of the assembled battery 1. When a vehicle key switch (not shown) is turned on, the battery control device 7 starts the process of step S200. In step S200, it is determined whether or not the internal resistance RBAT has been calculated. If it is determined that the internal resistance RBAT has not yet been calculated, the process waits in step S200, and if it has been calculated, the process proceeds to step S210.

ステップS210では、電流センサ5によって検出された充放電電流BATCURの絶対値が第1の電流しきい値BATCUR1以上であるか否かを判定する。充放電電流BATCURの絶対値が第1の電流しきい値BATCUR1以上であると判定するとステップS220に進み、第1の電流しきい値BATCUR1未満であると判定すると、ステップS270に進む。   In step S210, it is determined whether or not the absolute value of the charge / discharge current BATCUR detected by the current sensor 5 is greater than or equal to the first current threshold value BATCUR1. If it is determined that the absolute value of the charge / discharge current BATCUR is greater than or equal to the first current threshold value BATCUR1, the process proceeds to step S220, and if it is determined that it is less than the first current threshold value BATCUR1, the process proceeds to step S270.

ステップS220では、一定期間中の内部抵抗RBATの変化量を求める。図6および図7に示すフローチャートで説明したように、組電池1の内部抵抗RBATは、SOC、電池温度、放電時間および放電電流の大きさに応じて、値が更新される。ここでは、最新の内部抵抗の値RBAT(new)から、前回演算した内部抵抗の値RBAT(old)を減算した値DELBATを内部抵抗RBATの変化量として求める。内部抵抗RBATの変化量DELBATを求めると、ステップS230に進む。   In step S220, a change amount of the internal resistance RBAT during a certain period is obtained. As described in the flowcharts shown in FIGS. 6 and 7, the value of the internal resistance RBAT of the assembled battery 1 is updated according to the SOC, the battery temperature, the discharge time, and the magnitude of the discharge current. Here, a value DELBAT obtained by subtracting the previously calculated internal resistance value RBAT (old) from the latest internal resistance value RBAT (new) is obtained as a change amount of the internal resistance RBAT. When the change amount DELBAT of the internal resistance RBAT is obtained, the process proceeds to step S230.

ステップS230では、ステップS220で求めた内部抵抗の変化量DELBATが所定値RBATNG1以上であるか否かを判定する。内部抵抗の変化量DELBATが所定値RBATNG1以上であると判定するとステップS260に進む。ステップS260では、内部抵抗異常上昇フラグF2を1にセットして、ステップS270に進む。なお、内部抵抗異常上昇フラグF2の初期値は0である。一方、ステップS230において、内部抵抗の変化量DELBATが所定値RBATNG1未満であると判定すると、ステップS240に進む。   In step S230, it is determined whether or not the internal resistance change amount DELBAT obtained in step S220 is equal to or greater than a predetermined value RBATNG1. If it is determined that the change amount DELBAT of the internal resistance is greater than or equal to the predetermined value RBATNG1, the process proceeds to step S260. In step S260, the internal resistance abnormality rise flag F2 is set to 1, and the process proceeds to step S270. Note that the initial value of the internal resistance abnormality rise flag F2 is zero. On the other hand, if it is determined in step S230 that the internal resistance change amount DELBAT is less than the predetermined value RBATNG1, the process proceeds to step S240.

ステップS240では、組電池1の内部抵抗RBATが所定のしきい値RBATNG2より小さいか否かを判定する。内部抵抗RBATが所定のしきい値RBATNG2より小さいと判定するとステップS270に進み、所定のしきい値RBATNG2以上であると判定すると、ステップS250に進む。ステップS250では、内部抵抗異常上昇フラグF2を0にセットして、ステップS270に進む。ステップS270では、シャットダウン要求があったか否かを判定する。図示しない車両のキースイッチがオフされることによって、シャットダウン要求があったと判定すると、電池制御装置7による処理を終了し、シャットダウン要求がないと判定すると、ステップS210に戻る。   In step S240, it is determined whether or not the internal resistance RBAT of the assembled battery 1 is smaller than a predetermined threshold value RBATNG2. If it is determined that the internal resistance RBAT is smaller than the predetermined threshold value RBATNG2, the process proceeds to step S270. If it is determined that the internal resistance RBAT is equal to or greater than the predetermined threshold value RBATNG2, the process proceeds to step S250. In step S250, the internal resistance abnormality rise flag F2 is set to 0, and the process proceeds to step S270. In step S270, it is determined whether or not there is a shutdown request. If it is determined that a shutdown request has been made by turning off a key switch of a vehicle (not shown), the process by the battery control device 7 is terminated. If it is determined that there is no shutdown request, the process returns to step S210.

続いて、組電池1の出力可能パワー演算値の制限制御について、図9に示すフローチャートを用いて説明する。図示しない車両のキースイッチがオンされると、電池制御装置7は、ステップS300の処理を開始する。ステップS300では、組電池1の出力可能パワー(組電池1の出力上限値)P1を演算して、ステップS310に進む。なお、組電池1の出力可能パワーとは、組電池1の状態に応じて出力可能な上限値であり、既知の方法を用いて求めることができる。   Next, limit control of the output power calculation value of the assembled battery 1 will be described with reference to the flowchart shown in FIG. When a vehicle key switch (not shown) is turned on, the battery control device 7 starts the process of step S300. In step S300, the output possible power of the assembled battery 1 (the output upper limit value of the assembled battery 1) P1 is calculated, and the process proceeds to step S310. In addition, the output possible power of the assembled battery 1 is an upper limit value that can be output according to the state of the assembled battery 1, and can be obtained using a known method.

ステップS310では、次式(2)より、組電池1の出力可能パワーの制限値POWLIMを演算する。
POWLIM=P1×(KPOW)NP (2)
ただし、KPOWは、1未満の所定の係数であり、NPは、所定係数KPOWの乗数であり、初期値は0である。
In step S310, the limit value POWLIM of the output power of the assembled battery 1 is calculated from the following equation (2).
POWLIM = P1 × (KPOW) NP (2)
However, KPOW is a predetermined coefficient less than 1, NP is a multiplier of the predetermined coefficient KPOW, and the initial value is 0.

ステップS310に続くステップS320では、内部抵抗異常上昇フラグF2が1にセットされているか否かを判定する。内部抵抗異常上昇フラグF2が0にセットされていると判定するとステップS330に進み、所定係数KPOWの乗数NPを0に設定して、ステップS310に戻る。一方、内部抵抗異常上昇フラグF2が1にセットされていると判定すると、ステップS340に進む。   In step S320 following step S310, it is determined whether or not the internal resistance abnormality increase flag F2 is set to 1. If it is determined that the internal resistance abnormality rise flag F2 is set to 0, the process proceeds to step S330, the multiplier NP of the predetermined coefficient KPOW is set to 0, and the process returns to step S310. On the other hand, if it is determined that the internal resistance abnormality rise flag F2 is set to 1, the process proceeds to step S340.

ステップS340では、所定係数KPOWの乗数NPの値を1だけ増加させて、ステップS350に進む。ステップS350では、シャットダウン要求があったか否かを判定する。図示しない車両のキースイッチがオフされることによって、シャットダウン要求があったと判定すると、電池制御装置7による処理を終了し、シャットダウン要求がないと判定すると、ステップS310に戻る。   In step S340, the value of the multiplier NP of the predetermined coefficient KPOW is increased by 1, and the process proceeds to step S350. In step S350, it is determined whether or not there has been a shutdown request. If it is determined that a shutdown request has been made by turning off a key switch of a vehicle (not shown), the process by the battery control device 7 is terminated. If it is determined that there is no shutdown request, the process returns to step S310.

図9に示すフローチャートでは、図示しない車両のキースイッチがオフされるまでの間、ステップS310以降の処理が繰り返し行われる。従って、内部抵抗異常上昇フラグF2が1にセットされ続けている間は、所定係数KPOWの乗数NPが増加していくため、出力可能パワーの制限値POWLIMの値は小さくなっていく。一方、内部抵抗異常上昇フラグF2が0にセットされている場合には、乗数NPが0にセットされるため、出力可能パワーの制限値POWLIMは、ステップS300で演算される組電池1の出力可能パワーP1の値と同一になる。   In the flowchart shown in FIG. 9, the processes after step S310 are repeatedly performed until the key switch (not shown) of the vehicle is turned off. Therefore, while the internal resistance abnormality increase flag F2 is continuously set to 1, the multiplier NP of the predetermined coefficient KPOW increases, and thus the value of the output power limit value POWLIM decreases. On the other hand, when the internal resistance abnormality rise flag F2 is set to 0, the multiplier NP is set to 0. Therefore, the output power limit value POWLIM can be output from the assembled battery 1 calculated in step S300. It becomes the same as the value of power P1.

図10(a)は、組電池1の放電とともに、組電池1の総電圧が低下し、ある時刻T1において、拡散限界が生じて、組電池1の内部抵抗が急激に増加する様子を示す図である。図10(a)に示すように、拡散限界が生じると、組電池1の総電圧が急激に低下するため、組電池1の電圧と所定の過放電しきい値とを比較して、電池の過放電を検出する過放電検出回路を備えているシステムの場合には、電池の過放電が検出されてしまう可能性がある。   FIG. 10A shows a state in which the total voltage of the assembled battery 1 decreases as the assembled battery 1 is discharged, a diffusion limit occurs at a certain time T1, and the internal resistance of the assembled battery 1 rapidly increases. It is. As shown in FIG. 10 (a), when the diffusion limit occurs, the total voltage of the assembled battery 1 rapidly decreases. Therefore, the voltage of the assembled battery 1 is compared with a predetermined overdischarge threshold value. In the case of a system including an overdischarge detection circuit that detects overdischarge, there is a possibility that battery overdischarge may be detected.

図10(b)は、一実施の形態における電池制御装置によって、内部抵抗の異常上昇を検出した時に(内部抵抗異常上昇フラグF2=1)、電池の出力可能パワーを制限する(電池の出力上限値を小さくする)処理を行った場合の結果を示す図である。電池の出力可能パワーを制限する処理を行うと、電池の放電電流が制限されるため、内部抵抗の上昇が抑制される(図5参照)。これにより、図10(b)に示すように、組電池1の総電圧の急激な低下を防ぐことができるので、電池の過放電が検出されることも防ぐことができる。   FIG. 10B shows a case where the battery control device according to the embodiment detects an abnormal increase in internal resistance (internal resistance abnormality increase flag F2 = 1), and limits the output power of the battery (battery output upper limit). It is a figure which shows the result at the time of performing the process which makes a value small. When the process of limiting the output power of the battery is performed, the discharge current of the battery is limited, so that an increase in internal resistance is suppressed (see FIG. 5). Thereby, as shown in FIG.10 (b), since the rapid fall of the total voltage of the assembled battery 1 can be prevented, it can also prevent that the overdischarge of a battery is detected.

拡散限界が生じて、組電池1の内部抵抗が急激に上昇した場合でも、電池の出力可能パワーを制限しない従来の装置では、車両制御装置10において、組電池1の残存容量に応じた電池の出力を要求した時に、組電池1の電圧が低下していることによって、要求通りの出力を組電池1から得ることができず、車両の要求に応じたトルクを出力することができなくなる。これに対して、一実施の形態における電池制御装置によれば、内部抵抗の異常上昇に基づいて、電池の出力可能パワーを制限することによって、内部抵抗の上昇を抑制するとともに、組電池1の総電圧の急激な低下を防ぐことができる。   Even in the case where a diffusion limit occurs and the internal resistance of the assembled battery 1 suddenly increases, in the conventional device that does not limit the output power of the battery, the vehicle control device 10 uses the battery according to the remaining capacity of the assembled battery 1. When the output is requested, because the voltage of the assembled battery 1 is lowered, the requested output cannot be obtained from the assembled battery 1, and the torque according to the request of the vehicle cannot be output. On the other hand, according to the battery control device in one embodiment, by limiting the output power of the battery based on the abnormal increase in internal resistance, the increase in internal resistance is suppressed, and the battery pack 1 A sudden drop in the total voltage can be prevented.

一実施の形態における電池制御装置によれば、所定期間内における組電池1の内部抵抗の上昇幅が所定値を越えたことが検出されると、組電池の出力上限値を小さくするので、拡散限界による内部抵抗の上昇および組電池の総電圧の急激な低下を抑制することができる。また、組電池の総電圧の急激な低下を抑制することにより、組電池の過放電を防ぐことができる。   According to the battery control apparatus in one embodiment, when it is detected that the increase width of the internal resistance of the assembled battery 1 exceeds a predetermined value within a predetermined period, the output upper limit value of the assembled battery is reduced. An increase in internal resistance due to the limit and a rapid decrease in the total voltage of the assembled battery can be suppressed. Moreover, the overdischarge of an assembled battery can be prevented by suppressing the rapid fall of the total voltage of an assembled battery.

一実施の形態における電池制御装置によれば、電池の残存容量に応じて電池の内部抵抗を演算するとともに、電池の温度、放電時間、放電電流の大きさに基づいて、演算した内部抵抗を補正するようにした。これにより、放電時の総電圧および放電電流に基づいて、直線回帰演算を行うことにより、内部抵抗を求める従来の方法に比べて、電池の内部抵抗を迅速かつ正確に求めることができる。   According to the battery control device in one embodiment, the internal resistance of the battery is calculated according to the remaining capacity of the battery, and the calculated internal resistance is corrected based on the temperature of the battery, the discharge time, and the magnitude of the discharge current. I tried to do it. Thereby, by performing linear regression calculation based on the total voltage and discharge current at the time of discharge, the internal resistance of the battery can be obtained quickly and accurately as compared with the conventional method for obtaining the internal resistance.

本発明は、上述した一実施の形態に限定されることはない。例えば、電池制御装置を電気自動車に搭載した一実施の形態について説明したが、ハイブリッド自動車に搭載することもできるし、車両以外の他のシステムに適用することもできる。   The present invention is not limited to the embodiment described above. For example, although an embodiment in which the battery control device is mounted on an electric vehicle has been described, the battery control device can also be mounted on a hybrid vehicle or applied to a system other than the vehicle.

電池の内部抵抗は、電池のSOCに基づいて演算したが、他の方法により求めてもよい。また、SOCに基づいて演算した内部抵抗を、組電池の温度、放電時間、放電電流の大きさに基づいて補正するようにしたが、組電池の温度のみに基づいて補正する方法を採用することもできるし、放電時間のみに基づいて補正する方法を採用することもできる。また、電池の内部抵抗の異状上昇が検出された時に、電池の出力可能パワーを制限する方法も、上述した式(2)を用いる方法に限られず、他の方法によって制限することもできる。さらに、制御対象の電池の種類や、電池の出力可能パワーの演算方法によって、本発明が限定されることもない。   The internal resistance of the battery is calculated based on the SOC of the battery, but may be obtained by other methods. In addition, the internal resistance calculated based on the SOC is corrected based on the temperature of the assembled battery, the discharge time, and the magnitude of the discharge current, but a method of correcting based on only the temperature of the assembled battery is adopted. It is also possible to employ a correction method based only on the discharge time. Further, the method of limiting the output power of the battery when an abnormal increase in the internal resistance of the battery is detected is not limited to the method using the above-described formula (2), and may be limited by another method. Furthermore, the present invention is not limited by the type of the battery to be controlled and the calculation method of the output power of the battery.

特許請求の範囲の構成要素と一実施の形態の構成要素との対応関係は次の通りである。すなわち、電池制御装置7が内部抵抗演算手段、内部抵抗上昇異常検出手段、出力上限値演算手段、および、出力上限値制限手段をそれぞれ構成する。なお、以上の説明はあくまで一例であり、発明を解釈する上で、上記の実施形態の構成要素と本発明の構成要素との対応関係に何ら限定されるものではない。   The correspondence between the constituent elements of the claims and the constituent elements of the embodiment is as follows. That is, the battery control device 7 constitutes an internal resistance calculation means, an internal resistance increase abnormality detection means, an output upper limit value calculation means, and an output upper limit value limit means. In addition, the above description is an example to the last, and when interpreting invention, it is not limited to the correspondence of the component of said embodiment and the component of this invention at all.

一実施の形態における電池の制御装置を搭載した電気自動車の駆動システムを示す図The figure which shows the drive system of the electric vehicle carrying the control apparatus of the battery in one embodiment 組電池を構成する薄型ラミネート電池の詳細な構成を示す図The figure which shows the detailed structure of the thin laminated battery which comprises an assembled battery 薄型ラミネート電池のSOC(%)と、内部抵抗との関係を示す図The figure which shows the relationship between SOC (%) of thin laminated battery and internal resistance 薄型ラミネート電池の温度(℃)と、内部抵抗との関係を示す図Diagram showing the relationship between temperature (° C) of thin laminated battery and internal resistance 薄型ラミネート電池の放電時間と、内部抵抗との関係を示す図Diagram showing the relationship between discharge time and internal resistance of thin laminated battery 一実施の形態における電池制御装置によって行われる制御内容を示すフローチャートThe flowchart which shows the control content performed by the battery control apparatus in one embodiment. 図6に示すフローチャートに続く処理内容を示すフローチャートThe flowchart which shows the processing content following the flowchart shown in FIG. 組電池の内部抵抗の上昇異常を検出する処理内容を示すフローチャートThe flowchart which shows the processing content which detects the raise abnormality of the internal resistance of an assembled battery 組電池の出力可能パワー演算値の制限制御の内容を示すフローチャートFlow chart showing contents of limit control of output power calculation value of battery pack 図10(a)は、拡散限界が生じて、電池の内部抵抗が上昇するとともに、電池の総電圧が急激に低下する様子を示す図、図10(b)は、一実施の形態における電池の制御装置によって、電池の出力可能パワーを制限する処理が行われた場合の結果を示す図FIG. 10A is a diagram showing a situation in which the diffusion limit occurs, the internal resistance of the battery increases, and the total voltage of the battery suddenly decreases. FIG. 10B shows the battery of the embodiment. The figure which shows the result when the process which restrict | limits the output power of a battery is performed by the control apparatus.

符号の説明Explanation of symbols

1…組電池、2…インバータ、3…3相交流モータ、4…電圧センサ、5…電流センサ、6…サーミスタ、7…電池制御装置、7a…CPU、7b…ROM、7c…RAM、7d…タイマ、8a,8b…強電リレー、9…強電ハーネス、10…車両制御装置、11,12…防湿性多層フィルム、13…発電要素、14…薄型電極一体型正極、15…薄型電極一体型負極 DESCRIPTION OF SYMBOLS 1 ... Battery assembly, 2 ... Inverter, 3 ... Three-phase alternating current motor, 4 ... Voltage sensor, 5 ... Current sensor, 6 ... Thermistor, 7 ... Battery control device, 7a ... CPU, 7b ... ROM, 7c ... RAM, 7d ... Timer, 8a, 8b ... High electric relay, 9 ... High electric harness, 10 ... Vehicle control device, 11, 12 ... Moisture-proof multilayer film, 13 ... Power generation element, 14 ... Thin electrode integrated positive electrode, 15 ... Thin electrode integrated negative electrode

Claims (5)

電池の内部抵抗を演算する内部抵抗演算手段と、
電池が出力可能な出力上限値を演算する出力上限値演算手段と、
前記内部抵抗演算手段によって演算された内部抵抗の所定期間内の上昇幅が所定値を越えたことを検出する内部抵抗上昇異常検出手段と、
前記内部抵抗上昇異常検出手段によって、前記内部抵抗の所定期間内の上昇幅が所定値を越えたことが検出されると、前記出力上限値演算手段によって演算された出力上限値を小さくする出力上限値制限手段とを備えることを特徴とする電池制御装置。
Internal resistance calculating means for calculating the internal resistance of the battery;
An output upper limit value calculating means for calculating an output upper limit value that the battery can output;
Internal resistance increase abnormality detection means for detecting that the increase width of the internal resistance calculated by the internal resistance calculation means within a predetermined period exceeds a predetermined value;
When the internal resistance increase abnormality detecting means detects that the increase width of the internal resistance within a predetermined period exceeds a predetermined value, the output upper limit that decreases the output upper limit value calculated by the output upper limit value calculating means. A battery control device comprising: a value limiting unit.
請求項1に記載の電池制御装置において、
前記内部抵抗演算手段は、電池の残存容量に基づいて、電池の内部抵抗を演算することを特徴とする電池制御装置。
The battery control device according to claim 1,
The battery control device, wherein the internal resistance calculation means calculates the internal resistance of the battery based on the remaining capacity of the battery.
請求項2に記載の電池制御装置において、
前記内部抵抗演算手段は、電池の放電時間に基づいて、演算した内部抵抗を補正することを特徴とする電池制御装置。
The battery control device according to claim 2,
The battery control apparatus, wherein the internal resistance calculation means corrects the calculated internal resistance based on a discharge time of the battery.
請求項2に記載の電池制御装置において、
前記内部抵抗演算手段は、放電電流の大きさおよび放電時間に基づいて、演算した内部抵抗を補正することを特徴とする電池制御装置。
The battery control device according to claim 2,
The battery control device, wherein the internal resistance calculation means corrects the calculated internal resistance based on a magnitude of a discharge current and a discharge time.
請求項1〜4のいずれかに記載の電池制御装置において、
前記内部抵抗演算手段は、電池の温度に基づいて、演算した内部抵抗を補正することを特徴とする電池制御装置。
The battery control device according to any one of claims 1 to 4,
The battery control device, wherein the internal resistance calculation means corrects the calculated internal resistance based on a temperature of the battery.
JP2005160041A 2005-05-31 2005-05-31 Battery control device Active JP5130608B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005160041A JP5130608B2 (en) 2005-05-31 2005-05-31 Battery control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005160041A JP5130608B2 (en) 2005-05-31 2005-05-31 Battery control device

Publications (2)

Publication Number Publication Date
JP2006338944A true JP2006338944A (en) 2006-12-14
JP5130608B2 JP5130608B2 (en) 2013-01-30

Family

ID=37559334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005160041A Active JP5130608B2 (en) 2005-05-31 2005-05-31 Battery control device

Country Status (1)

Country Link
JP (1) JP5130608B2 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008157757A (en) * 2006-12-25 2008-07-10 Furukawa Electric Co Ltd:The Method and device for determining state of battery, and battery power supply system
WO2008108102A1 (en) * 2007-03-07 2008-09-12 Panasonic Corporation Quick charging method of lithium based secondary battery and electronic apparatus employing it
JP2011027608A (en) * 2009-07-28 2011-02-10 Denso Corp System for monitoring state of battery pack
JP2011156625A (en) * 2010-02-02 2011-08-18 Hitachi Koki Co Ltd Power tool and battery pack
JP2012075298A (en) * 2010-09-30 2012-04-12 Hitachi Ltd Secondary battery system
CN102476104A (en) * 2010-11-25 2012-05-30 天津力神电池股份有限公司 Method for screening battery with poor internal resistance through discharge voltage change
EP2432067A3 (en) * 2008-01-24 2013-02-27 Toyota Jidosha Kabushiki Kaisha Battery system, vehicle, and battery mounted device
JP2013125713A (en) * 2011-12-16 2013-06-24 Hitachi Ltd Secondary battery system and control method thereof
CN104471414A (en) * 2012-05-24 2015-03-25 日立汽车系统株式会社 Cell control device
CN105742729A (en) * 2014-12-12 2016-07-06 国家电网公司 Online safety pre-warning method for lithium-ion battery
WO2017094668A1 (en) * 2015-12-04 2017-06-08 株式会社オートネットワーク技術研究所 On-board power supply device and on-board power supply system
CN109155446A (en) * 2017-01-24 2019-01-04 株式会社Lg化学 Device and method for managing battery
JP2020511737A (en) * 2017-11-03 2020-04-16 エルジー・ケム・リミテッド Battery management system and method for optimizing internal resistance of battery
WO2021039905A1 (en) 2019-08-30 2021-03-04 株式会社Gsユアサ Device for managing power storage element, power storage device, method for controlling power storage element input/output

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60140163A (en) * 1983-12-28 1985-07-25 Nissan Motor Co Ltd Abnormality forecasting apparatus for battery
JPH1040967A (en) * 1996-07-26 1998-02-13 Nippon Telegr & Teleph Corp <Ntt> Storage battery capacity estimation method and storage battery capacity estimation device
JPH10304503A (en) * 1997-04-24 1998-11-13 Honda Motor Co Ltd Controller for electric vehicle
JP2000338201A (en) * 1999-05-26 2000-12-08 Nissan Motor Co Ltd Judging apparatus of life and residual capacity of combined battery
JP2001085071A (en) * 1999-09-13 2001-03-30 Toyota Motor Corp Battery temperature sensing device and method for sensing temperature
JP2001330654A (en) * 2000-05-22 2001-11-30 Suzuki Motor Corp Estimation device for battery residual capacity
JP2003204627A (en) * 2001-09-14 2003-07-18 Matsushita Electric Ind Co Ltd Battery control system
JP2003319503A (en) * 2002-04-17 2003-11-07 Toyota Motor Corp Vehicle power source controlling method, vehicle power source controlling device, and vehicle power source controlling program
JP2004031123A (en) * 2002-06-26 2004-01-29 Nissan Motor Co Ltd Capacity calculation method and device for battery pack connected in parallel
JP2004064840A (en) * 2002-07-26 2004-02-26 Nissan Motor Co Ltd Controlling device for storage system
JP2004166367A (en) * 2002-11-12 2004-06-10 Nissan Motor Co Ltd Battery controller of hybrid vehicle
JP2004271342A (en) * 2003-03-10 2004-09-30 Shin Kobe Electric Mach Co Ltd Charging and discharging control system

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60140163A (en) * 1983-12-28 1985-07-25 Nissan Motor Co Ltd Abnormality forecasting apparatus for battery
JPH1040967A (en) * 1996-07-26 1998-02-13 Nippon Telegr & Teleph Corp <Ntt> Storage battery capacity estimation method and storage battery capacity estimation device
JPH10304503A (en) * 1997-04-24 1998-11-13 Honda Motor Co Ltd Controller for electric vehicle
JP2000338201A (en) * 1999-05-26 2000-12-08 Nissan Motor Co Ltd Judging apparatus of life and residual capacity of combined battery
JP2001085071A (en) * 1999-09-13 2001-03-30 Toyota Motor Corp Battery temperature sensing device and method for sensing temperature
JP2001330654A (en) * 2000-05-22 2001-11-30 Suzuki Motor Corp Estimation device for battery residual capacity
JP2003204627A (en) * 2001-09-14 2003-07-18 Matsushita Electric Ind Co Ltd Battery control system
JP2003319503A (en) * 2002-04-17 2003-11-07 Toyota Motor Corp Vehicle power source controlling method, vehicle power source controlling device, and vehicle power source controlling program
JP2004031123A (en) * 2002-06-26 2004-01-29 Nissan Motor Co Ltd Capacity calculation method and device for battery pack connected in parallel
JP2004064840A (en) * 2002-07-26 2004-02-26 Nissan Motor Co Ltd Controlling device for storage system
JP2004166367A (en) * 2002-11-12 2004-06-10 Nissan Motor Co Ltd Battery controller of hybrid vehicle
JP2004271342A (en) * 2003-03-10 2004-09-30 Shin Kobe Electric Mach Co Ltd Charging and discharging control system

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4495141B2 (en) * 2006-12-25 2010-06-30 古河電気工業株式会社 Battery state determination method, battery state determination device, and battery power supply system
JP2008157757A (en) * 2006-12-25 2008-07-10 Furukawa Electric Co Ltd:The Method and device for determining state of battery, and battery power supply system
WO2008108102A1 (en) * 2007-03-07 2008-09-12 Panasonic Corporation Quick charging method of lithium based secondary battery and electronic apparatus employing it
JP2008253129A (en) * 2007-03-07 2008-10-16 Matsushita Electric Ind Co Ltd Method for quick charging lithium-based secondary battery and electronic equipment using same
EP2432067A3 (en) * 2008-01-24 2013-02-27 Toyota Jidosha Kabushiki Kaisha Battery system, vehicle, and battery mounted device
JP2011027608A (en) * 2009-07-28 2011-02-10 Denso Corp System for monitoring state of battery pack
JP2011156625A (en) * 2010-02-02 2011-08-18 Hitachi Koki Co Ltd Power tool and battery pack
US8742728B2 (en) 2010-09-30 2014-06-03 Hitachi, Ltd. System for controlling charging and discharging of lithium ion battery
JP2012075298A (en) * 2010-09-30 2012-04-12 Hitachi Ltd Secondary battery system
CN102476104A (en) * 2010-11-25 2012-05-30 天津力神电池股份有限公司 Method for screening battery with poor internal resistance through discharge voltage change
JP2013125713A (en) * 2011-12-16 2013-06-24 Hitachi Ltd Secondary battery system and control method thereof
US9557388B2 (en) 2012-05-24 2017-01-31 Hitachi Automotive Systems, Ltd. Battery control device
JPWO2013175606A1 (en) * 2012-05-24 2016-01-12 日立オートモティブシステムズ株式会社 Battery control device
CN104471414A (en) * 2012-05-24 2015-03-25 日立汽车系统株式会社 Cell control device
CN105742729A (en) * 2014-12-12 2016-07-06 国家电网公司 Online safety pre-warning method for lithium-ion battery
WO2017094668A1 (en) * 2015-12-04 2017-06-08 株式会社オートネットワーク技術研究所 On-board power supply device and on-board power supply system
CN109155446A (en) * 2017-01-24 2019-01-04 株式会社Lg化学 Device and method for managing battery
JP2019515621A (en) * 2017-01-24 2019-06-06 エルジー・ケム・リミテッド Battery management apparatus and method
US11125825B2 (en) 2017-01-24 2021-09-21 Lg Chem, Ltd. Apparatus and method for managing battery
CN109155446B (en) * 2017-01-24 2021-10-19 株式会社Lg化学 Apparatus and method for managing battery
JP2020511737A (en) * 2017-11-03 2020-04-16 エルジー・ケム・リミテッド Battery management system and method for optimizing internal resistance of battery
US11009555B2 (en) 2017-11-03 2021-05-18 Lg Chem, Ltd. Battery management system and method for optimizing internal resistance of battery
WO2021039905A1 (en) 2019-08-30 2021-03-04 株式会社Gsユアサ Device for managing power storage element, power storage device, method for controlling power storage element input/output

Also Published As

Publication number Publication date
JP5130608B2 (en) 2013-01-30

Similar Documents

Publication Publication Date Title
JP5130608B2 (en) Battery control device
JP5109304B2 (en) Battery remaining capacity detection device
US10254346B2 (en) SOC estimation device for secondary battery
JP6208213B2 (en) Secondary battery charging system and method, and battery pack
EP2717415A1 (en) Electricity storage system
CN106257738B (en) Controller for lithium ion secondary battery and vehicle
JP4816097B2 (en) Battery SOC calculation device
EP2175515A1 (en) Battery internal short-circuit detecting device and method, battery pack, and electronic device system
EP2159868A1 (en) In-cell shortcircuit detection device and method and cell pack
WO2013094057A1 (en) Battery control device and battery system
JP2009049005A (en) Device and method for battery internal short circuit detection, battery pack, and electronic device system
US10381605B2 (en) Battery pouch, battery cell and method of making a pouch or battery cell
JP2007057379A (en) Internal resistance detection method of secondary battery
JP2019187027A (en) Power storage device
JP2009273305A (en) Power supply and power supply for vehicle
JP2011155774A (en) Control device of power storage element
JP2006340447A (en) Controller for capacitor
JP2017536794A (en) Overvoltage prevention circuit, control method thereof, and battery pack
CN107408832B (en) Deterioration estimator for power storage element, power storage device, output/input control device for power storage element, and output/input control method for power storage element
JP2017163687A (en) Power supply system
JP6699533B2 (en) Battery system
JP4770149B2 (en) Battery temperature detector
JP6647986B2 (en) Secondary battery deterioration determination device, secondary battery deterioration determination method, and secondary battery control device
JP2015169483A (en) Secondary battery abnormality determination device
JP2016014567A (en) Remaining battery capacity calculation system and remaining battery capacity calculation method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080325

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20080624

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20080605

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20081014

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20101022

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101102

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101227

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110920

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20111121

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120508

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120704

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20121009

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20121022

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151116

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 5130608

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150