JP3216453B2 - Charging device - Google Patents
Charging deviceInfo
- Publication number
- JP3216453B2 JP3216453B2 JP31285594A JP31285594A JP3216453B2 JP 3216453 B2 JP3216453 B2 JP 3216453B2 JP 31285594 A JP31285594 A JP 31285594A JP 31285594 A JP31285594 A JP 31285594A JP 3216453 B2 JP3216453 B2 JP 3216453B2
- Authority
- JP
- Japan
- Prior art keywords
- charging
- current
- battery
- stage
- value
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、バッテリの充電装置に
関し、特に、始めに高めの電流値で急速充電を行い、続
いて低めの電流値で充電を行う、いわゆる２段充電を行
う充電装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery charging device, and more particularly to a charging device for performing a so-called two-stage charging in which a rapid charging is first performed at a high current value, and then a charging is performed at a low current value. About.
【０００２】[0002]
【従来の技術】バッテリは携帯可能な電源として非常に
有用であるが、蓄電するための充電時間が長いという欠
点がある。この充電時間を短くするために、高い電流値
で充電を行うことが考えられるが、このようにすると発
熱のためにバッテリが過熱したり、また適切な蓄電量が
得られない場合があるなどの問題があった。2. Description of the Related Art A battery is very useful as a portable power source, but has a drawback that charging time for storing power is long. In order to shorten this charging time, it is conceivable to perform charging at a high current value.However, in such a case, the battery may overheat due to heat generation, or an appropriate amount of stored power may not be obtained. There was a problem.
【０００３】そこで、充電初期においては、比較的高い
電流値で充電（１段目充電）を行い、蓄電量がある一定
量に達すると比較的低い電流値で充電（２段目充電）を
行う２段充電が行われてきた。この２段充電を行う際に
は、充電電流が所定値に制御される必要があるが、充電
電流を検出するセンサの誤差によって、実際の充電電流
が前記の所定値に対して誤差を含む場合があった。この
誤差によって、必要以上の電流が流れたり、十分な電流
が流れなかったりするという問題があった。この問題を
解決するために、特開平６−２０７９７３号公報におい
ては、充電を行う前の電流センサの指示値をこの電流セ
ンサの誤差として読み取り、この誤差を考慮して充電中
の電流値を制御する技術が開示されている。In the early stage of charging, charging is performed with a relatively high current value (first-stage charging), and when the charged amount reaches a certain amount, charging is performed with a relatively low current value (second-stage charging). Two-stage charging has been performed. When performing the two-stage charging, the charging current needs to be controlled to a predetermined value. However, when the actual charging current includes an error with respect to the predetermined value due to an error of a sensor that detects the charging current. was there. Due to this error, there is a problem that an excessive current flows or a sufficient current does not flow. In order to solve this problem, Japanese Patent Application Laid-Open No. 6-207973 discloses that an instruction value of a current sensor before charging is read as an error of the current sensor, and a current value during charging is controlled in consideration of the error. A technique for performing this is disclosed.
【０００４】[0004]
【発明が解決しようとする課題】前述のような２段充電
を行う場合、充電電流を精度良く制御すべきであるのは
２段目の充電においてである。このときの充電電流が、
バッテリの最終的な蓄電量を決定し、過熱や過充電によ
るバッテリの劣化にも影響する。前記公報においては電
流センサの誤差を測定するのは充電の前であり、実際に
高い精度が必要な２段目充電時には、最初に計測したセ
ンサ誤差が変化してしまう場合があるという問題があっ
た。In the case of performing the above-described two-stage charging, it is in the second-stage charging that the charging current should be accurately controlled. The charging current at this time is
It determines the final charge of the battery, which also affects battery deterioration due to overheating and overcharging. In the above publication, the error of the current sensor is measured before charging, and there is a problem that the sensor error measured first may change at the time of the second-stage charging that actually requires high accuracy. Was.
【０００５】本発明は前述の問題点を解決するためにな
されたものであり、２段目充電時の充電電流を高精度に
制御して、十分に蓄電しつつ、バッテリの劣化を抑える
ことのできる充電装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is an object of the present invention to control the charging current at the time of the second-stage charging with high accuracy so that the battery is sufficiently charged and the deterioration of the battery is suppressed. It is an object of the present invention to provide a charging device that can be used.
【０００６】[0006]
【課題を解決するための手段】前述の目的を達成するた
めに、本発明にかかる充電装置は、第１所定電流値でバ
ッテリに充電する１段目充電と、この１段目充電に引き
続き前記第１所定電流値より低い第２所定電流値で前記
バッテリに充電する２段目充電の２段充電を行う充電装
置であって、充電中の前記バッテリに流れる電流を検出
する電流センサと、前記電流センサの示す指示値に基づ
き充電制御を行う充電制御手段と、前記２段目充電の直
前に充電を一旦中止する充電中止制御手段と、前記充電
中止中に前記電流センサの指示値をセンサ誤差として読
み込むセンサ誤差読み込み手段と、前記２段目充電にお
いて、電流センサが示すべき指示値を前記第２所定電流
値および前記センサ誤差に基づき算出する指示値算出手
段とを有している。In order to achieve the above-mentioned object, a charging apparatus according to the present invention comprises a first-stage charging for charging a battery at a first predetermined current value, and a second-stage charging after the first-stage charging. A charging device for performing a two-stage charging of a second-stage charging for charging the battery with a second predetermined current value lower than a first predetermined current value, the current sensor detecting a current flowing to the battery during charging, Charge control means for performing charge control based on the indicated value indicated by the current sensor, charge stop control means for temporarily stopping charging immediately before the second-stage charging, and a sensor error which indicates the indicated value of the current sensor during the charge stop. And a command value calculating means for calculating a command value to be indicated by the current sensor in the second-stage charging based on the second predetermined current value and the sensor error.
【０００７】[0007]
【作用】本発明は以上のような構成を有しており、高い
精度で充電電流を制御する必要のある２段目充電の直前
に電流センサの誤差を測定することによって、精度良く
充電電流を制御することができる。したがって、十分な
蓄電量とすることができ、過熱や過充電などによるバッ
テリの劣化を抑えることができる。The present invention has the above configuration, and measures the error of the current sensor immediately before the second-stage charging, which needs to control the charging current with high accuracy. Can be controlled. Therefore, a sufficient amount of power can be stored, and deterioration of the battery due to overheating or overcharging can be suppressed.
【０００８】[0008]
【実施例】以下、本発明にかかる好適な実施例を図面に
従って説明する。図１には、本実施例の構成ブロック図
が示されている。充電器１０は交流電源１２の電圧を所
定の直流電圧に変換し、バッテリ１４に充電を行う。こ
のバッテリ１４は本実施例においては鉛二次電池が使用
されている。電流センサ１６は、充電中のバッテリ１４
に流れる電流を検出し、電圧センサ１８は、充電中のバ
ッテリ１４の端子電圧を検出する。これらのセンサによ
り検出された電流値および電圧値は制御部２０により読
み取られ、これらの値に基づいて制御部２０は充電器１
０の制御を行う。本実施例の場合、制御部２０によっ
て、バッテリ１４に流れる電流値が所定の値になるよう
に充電器１０の発生する電圧が制御される。すなわち、
２段充電の場合は１段目の充電において、比較的高い第
１の電流値で充電が行われ、２段目の充電においては、
前記の第１の電流値より低い第２の電流値で充電が行わ
れる。１段目において充電電流を高く設定したことによ
り充電時間の短縮を図ることができる。そして、２段目
充電においては、１段目の充電によって温度が上昇して
ガスが発生しやすくなったバッテリ１４に対し、充電電
流を低くすることによってガス発生を抑える。これによ
って、ガス発生に使用される電流を減少させ、流れた電
流を効率良く充電することができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments according to the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration block diagram of the present embodiment. The charger 10 converts the voltage of the AC power supply 12 into a predetermined DC voltage and charges the battery 14. In this embodiment, the battery 14 is a lead secondary battery. The current sensor 16 is connected to the battery 14 being charged.
The voltage sensor 18 detects the terminal voltage of the battery 14 during charging. The current value and the voltage value detected by these sensors are read by the control unit 20, and based on these values, the control unit 20
0 is controlled. In the case of the present embodiment, the voltage generated by the charger 10 is controlled by the control unit 20 so that the value of the current flowing through the battery 14 becomes a predetermined value. That is,
In the case of two-stage charging, charging is performed at a relatively high first current value in the first stage charging, and in the second stage charging,
Charging is performed at a second current value lower than the first current value. By setting the charging current high in the first stage, the charging time can be reduced. In the second-stage charging, the generation of gas is suppressed by lowering the charging current for the battery 14 in which the temperature is increased by the first-stage charging and gas is easily generated. Thus, the current used for gas generation can be reduced, and the flowing current can be charged efficiently.
【０００９】本実施例の制御フローを図２および図３に
従って説明する。図２には、本実施例の制御フローを示
したフローチャートが、図３には、本実施例で充電を行
った場合のバッテリの端子電圧と充電電流のタイムチャ
ートが示されている。The control flow of this embodiment will be described with reference to FIGS. FIG. 2 is a flowchart showing a control flow of the present embodiment, and FIG. 3 is a time chart of a battery terminal voltage and a charging current when charging is performed in the present embodiment.
【００１０】充電制御が開始すると初期化が行われ（Ｓ
１００）、充電電流値Ｉが１２Ａで一定となるように１
段目充電が行われる（Ｓ１０２）。前述のように、この
とき充電器１０は、電流センサ１６により検出される電
流値が１２Ａとなるような電圧を発生するように制御部
２０によって制御される。そして、バッテリ温度が急上
昇したり、電源が停電となったり、さらに漏電が検出さ
れるような異常がないかが判断される（Ｓ１０４）。異
常がない場合、電圧センサ１８により検出されるバッテ
リの端子電圧Ｅが３４８Ｖ以上であるかが判断される
（Ｓ１０６）。３４８Ｖ以上となっていない場合、引き
続き１段目充電が行われる。図３に示すように１段目充
電の間、バッテリ電圧Ｅは徐々に上昇する。When the charge control starts, initialization is performed (S
100) and 1 so that the charging current value I is constant at 12 A.
The stage charging is performed (S102). As described above, at this time, the charger 10 is controlled by the control unit 20 to generate a voltage such that the current value detected by the current sensor 16 becomes 12 A. Then, it is determined whether there is an abnormality such as a sudden rise in the battery temperature, a power outage, or a detection of a leakage (S104). If there is no abnormality, it is determined whether the terminal voltage E of the battery detected by the voltage sensor 18 is 348 V or more (S106). If the voltage is not 348 V or more, the first-stage charging is continuously performed. As shown in FIG. 3, during the first-stage charging, the battery voltage E gradually increases.
【００１１】やがてバッテリ電圧が３４８Ｖに達すると
ステップＳ１０６にてＹＥＳの判定がなされ、制御部２
０に含まれる充電制御中止部２２により充電制御を一旦
中止する制御がなされる（Ｓ１０８）。また、バッテリ
１４から電力が持ち出されないように、図示しない負荷
装置の制御も停止する。この負荷装置は例えばモータで
あり、モータの制御を司るＡ／Ｃインバータの制御を停
止することでモータによる電力消費がなくなる。このよ
うに充電制御を停止し、前記モータのような負荷装置の
制御も停止するので、バッテリ１４に対し出入りする電
流が０になる。このとき電流センサ１６が全く誤差を含
まない場合には、指示値ＩB は０になるはずであるが、
実際には０にはならない場合が多い。When the battery voltage reaches 348 V, a "YES" determination is made in step S106,
Control for temporarily suspending the charge control is performed by the charge control suspending unit 22 included in 0 (S108). In addition, control of a load device (not shown) is stopped so that power is not taken out of the battery 14. This load device is, for example, a motor, and by stopping the control of the A / C inverter that controls the motor, power consumption by the motor is eliminated. In this way, the charging control is stopped, and the control of the load device such as the motor is also stopped, so that the current flowing into and out of the battery 14 becomes zero. If this time the current sensor 16 does not at all contain the error is indicated value I B should be 0,
Actually, it often does not become zero.
【００１２】電流センサ１６は、導線に電流が流れると
きにその周囲に発生する磁界の大きさをホール素子によ
って電気信号に変換し、これをアンプで増幅して出力す
るものである。このホール素子は、測定直前の電流によ
って着磁される場合があり、このような場合、この着磁
量だけオフセットした電流値が検出される。また、アン
プにおいても個々のばらつきによって、出力値にオフセ
ットが存在する。これらのオフセットが検出される電流
値の誤差となる。The current sensor 16 converts the magnitude of a magnetic field generated around the conductor when a current flows through the conductor into an electric signal using a Hall element, amplifies the electric signal with an amplifier, and outputs the amplified signal. The Hall element may be magnetized by a current immediately before the measurement. In such a case, a current value offset by the magnetization amount is detected. Also, in an amplifier, an output value has an offset due to individual variations. These offsets result in errors in the detected current values.
【００１３】さらに、１段目の充電において、バッテリ
１４およびその周囲の温度が上昇しているので、電流セ
ンサ１６の温度も変化し、これも電流値の誤差の原因と
なる。１段目の充電量は、充電開始前のバッテリ１４の
蓄電量により変化するので、１段目終了時の電流センサ
１６の周囲の温度も変化する。したがって、前記の公報
のように、充電開始前に電流センサ１６の誤差を検出し
ても１段目充電終了時点では、温度変化によって誤差が
変化してしまう。本実施例においては、２段目充電の開
始直前に電流センサ１６の誤差の検出を行うので、温度
変化による誤差を減少させることができる。後に詳述す
るが、２段目充電においては、電流の時間に関する積分
値によってその終了判定を行っているので、１段目に比
してより精度の良い電流検出が要求される。また、２段
目充電時には、１段目充電によってバッテリ温度が上昇
しているので電解液からガスが発生しやすく、このガス
発生を抑えるためにも電流を精度良く制御することが要
求される。Further, in the first stage charging, since the temperature of the battery 14 and its surroundings has risen, the temperature of the current sensor 16 also changes, which also causes a current value error. Since the first-stage charge amount changes depending on the charged amount of the battery 14 before the start of charging, the temperature around the current sensor 16 at the end of the first-stage also changes. Therefore, even if an error of the current sensor 16 is detected before the start of charging as in the above-mentioned publication, the error changes due to a temperature change at the end of the first stage charging. In the present embodiment, since the error of the current sensor 16 is detected immediately before the start of the second-stage charging, the error due to the temperature change can be reduced. As will be described in detail later, in the second-stage charging, the termination is determined based on the integrated value of the current with respect to time, so that more accurate current detection is required as compared to the first-stage charging. In addition, during the second-stage charging, since the battery temperature has risen due to the first-stage charging, gas is likely to be generated from the electrolytic solution. In order to suppress the gas generation, it is required to accurately control the current.
【００１４】ステップＳ１０８でバッテリ１４に出入り
する電流を０とした後、電流センサ１６の指示値ＩB が
このときの電流センサ１６の誤差である。この指示値Ｉ
B を制御部２０のセンサ誤差読み込み部２４が読み込む
（Ｓ１１０）。そして、この誤差を考慮して、２段目充
電中に制御されるべき電流センサの指示値ＩR を目標指
示値算出部２６が算出する（Ｓ１１２）。すなわち、２
段目充電におけるバッテリ充電電流を３Ａとする場合、
電流センサの指示値Ｉは、[0014] After the current into and out of the battery 14 to 0 in step S108, an instruction value I B of the current sensor 16 is the error of the current sensor 16 at this time. This indicated value I
B is read by the sensor error reading unit 24 of the control unit 20 (S110). Then, in consideration of this error, an indication I R of the current sensors to be controlled in the second stage in the charging target instruction value calculating section 26 calculates (S112). That is, 2
When the battery charging current in the third-stage charging is 3 A,
The indicated value I of the current sensor is
【数１】ＩR ＝３＋ＩB …（１） となる。言い換えれば、２段目充電においては、電流セ
ンサ１６の指示値が常に式（１）の指示値ＩR となるよ
うに制御すれば、実際のバッテリ充電電流が３Ａにな
る。目標指示値ＩR の算出が終わると、タイマ２８にて
２段目充電の経過時間の計時が開始される（Ｓ１１
４）。そして、電流センサ１６により検出される電流値
が前記の目標指示値ＩR となるように制御部２０が充電
器１０を制御し、２段目充電が行われる（Ｓ１１６）。
２段目充電の間、実際に流れた電流Ｉは式（１）より、I R = 3 + I B (1) In other words, in the second-stage charging, the actual battery charging current becomes 3 A if the control is performed so that the indicated value of the current sensor 16 always becomes the indicated value I R of Expression (1). When the calculation of the target instruction value I R is finished, the elapsed time count of the second-stage charging at the timer 28 is started (S11
4). Then, the control unit 20 so that the current value detected by the current sensor 16 becomes the target instruction value I R of the control charger 10, the second stage charging is performed (S116).
The current I actually flowing during the second-stage charging is given by the following equation (1).
【数２】Ｉ＝ＩR −ＩB …（２） であるとして、この電流Ｉをタイマ２８で計時される時
間で積分（Ａｈ積分）して（Ｓ１１８）、バッテリ１４
に蓄電された電力を推定する。２段目充電においては、
バッテリ１４の端子電圧はすでに飽和状態に近いので余
り変化しない。したがって、端子電圧に基づき充電終了
を判断すると、十分充電されなかったり逆に過充電とな
ったりする場合がある。このため、本実施例において
は、２段目充電においては、実際に流れた電流に基づき
バッテリに蓄電された電力を推定している。そして、ス
テップＳ１０４と同様の異常判定が行われる（Ｓ１２
０）。異常がなければ、２段目充電が開始されてからの
経過時間が５時間以上となっていないかが判定され（Ｓ
１２２）、５時間が経過していない場合はさらにＡｈ積
分値が１２Ａｈ以上かが判断される（Ｓ１２４）。５時
間経過か１２Ａｈ充電のいずれかが判定されると充電が
終了する。前述のように２段目充電の充電電流は３Ａに
なるように設定されているので、通常約４時間でＡｈ積
分値が１２Ａｈとなり本実施例のバッテリ１４の充電が
終了するが、想定したように電流が流れなかった場合、
１２Ａｈ以上とならなくても充電を終了するように設定
される。ステップＳ１２２およびＳ１２４にてＮＯの判
定がなされた場合、２段目充電が継続される。As Equation 2 is a I = I R -I B ... ( 2), the current I time integral (Ah integration) clocked by the timer 28 to (S118), the battery 14
Is estimated. In the second stage charging,
Since the terminal voltage of the battery 14 is already close to the saturation state, it does not change much. Therefore, when the charge termination is determined based on the terminal voltage, the battery may not be sufficiently charged or may be overcharged. For this reason, in the present embodiment, in the second-stage charging, the power stored in the battery is estimated based on the current that actually flows. Then, the same abnormality determination as in step S104 is performed (S12).
0). If there is no abnormality, it is determined whether the elapsed time from the start of the second-stage charging is 5 hours or more (S
122) If five hours have not elapsed, it is further determined whether the Ah integrated value is 12 Ah or more (S124). When it is determined that 5 hours have elapsed or 12 Ah charging has been performed, charging ends. Since the charging current of the second-stage charging is set to 3 A as described above, the Ah integrated value becomes 12 Ah in about 4 hours, and the charging of the battery 14 of the present embodiment is completed. If no current flows through
It is set so that charging is terminated even if it does not become 12 Ah or more. If a negative determination is made in steps S122 and S124, the second-stage charging is continued.
【００１５】一方、ステップＳ１０４およびＳ１２０に
て異常判定がなされた場合、充電が停止され、異常項目
が記憶される（Ｓ１２６）。この異常項目の記憶によっ
て、後に充電が停止した原因が判定できる。On the other hand, if an abnormality is determined in steps S104 and S120, charging is stopped, and an abnormal item is stored (S126). By storing the abnormal items, it is possible to determine the cause of the charging stop later.
【００１６】以上のように、本実施例においては、１段
目充電の終了判定はバッテリ端子電圧によってなされ、
充電中の電流値には因らないことと、２段目充電は充電
中の電流値を高精度に制御する必要があることに着目し
ている。２段目充電においては、１段目充電によってバ
ッテリ１４の温度（特に電解液の温度）が上昇している
ため、ガスが発生しやすくなっており、電流が所定値よ
り多く流れるとガスが多量に発生する場合がある。この
ガスは可燃性のガスであり、またガス発生に電力が消費
されるので充電効率が低下する。また、２段目充電の終
了判定は、実際に流れた電流量を時間積分した値で行う
ので、検出される電流値の精度が低いと十分に充電され
なかったり、過充電となったりする場合がある。以上の
理由により、本実施例においては、２段目充電直前で電
流センサ１６の誤差を検出し、この誤差を考慮して実際
の充電電流が所定の値（３Ａ）になるように制御して充
電が行われる。As described above, in this embodiment, the end of the first-stage charging is determined by the battery terminal voltage.
The focus is on the fact that it does not depend on the current value during charging, and that the second-stage charging needs to control the current value during charging with high accuracy. In the second-stage charging, the temperature of the battery 14 (particularly, the temperature of the electrolyte) is increased by the first-stage charging, so that gas is easily generated. May occur. This gas is a flammable gas, and since power is consumed for gas generation, charging efficiency is reduced. In addition, since the end determination of the second-stage charging is performed based on a value obtained by integrating the amount of current that has actually flowed over time, if the accuracy of the detected current value is low, the battery may not be sufficiently charged or may be overcharged. There is. For the above reasons, in the present embodiment, an error of the current sensor 16 is detected immediately before the second-stage charging, and the actual charging current is controlled to a predetermined value (3 A) in consideration of the error. Charging is performed.
【００１７】本実施例においては、鉛二次電池の場合に
ついて説明したが他の種類の二次電池においても同様の
制御を行うことによって、２段目充電の充電電流を高精
度で制御することができる。また、実施例中に説明した
電流、電圧などの値は、使用されるバッテリ電源の種類
などにより適切な値に設定されることが好ましい。In the present embodiment, the case of a lead secondary battery has been described. However, the same control is performed for other types of secondary batteries to control the charging current of the second-stage charging with high accuracy. Can be. Further, it is preferable that the values of the current, the voltage, and the like described in the embodiment are set to appropriate values according to the type of the battery power supply used.
【００１８】[0018]
【発明の効果】以上のように、本発明によれば、高い精
度で充電電流を制御する必要のある２段目充電の直前に
電流センサの誤差を測定することによって、精度良く充
電電流を制御することができる。したがって、十分な蓄
電量とすることができ、過熱や過充電などによるバッテ
リの劣化を抑えることができる。As described above, according to the present invention, the charging current can be controlled with high accuracy by measuring the error of the current sensor immediately before the second-stage charging, which needs to control the charging current with high accuracy. can do. Therefore, a sufficient amount of power can be stored, and deterioration of the battery due to overheating or overcharging can be suppressed.
【図１】 本発明にかかる好適な実施例の構成を示すブ
ロック図である。FIG. 1 is a block diagram showing a configuration of a preferred embodiment according to the present invention.
【図２】 本実施例の制御フローを示すフローチャート
である。FIG. 2 is a flowchart illustrating a control flow according to the present embodiment.
【図３】 本実施例の装置により充電を行った際のバッ
テリ端子電圧と充電電流の時間変化を表す図である。FIG. 3 is a diagram illustrating a change over time of a battery terminal voltage and a charging current when charging is performed by the device of the present embodiment.
１０ 充電器、１２ 交流電源、１４ バッテリ、１６
電流センサ、２０制御部、２２ 充電制御中止部、２
４ センサ誤差読み込み部、２６ 目標指示値算出部。10 charger, 12 AC power supply, 14 battery, 16
Current sensor, 20 control unit, 22 charge control suspension unit, 2
4 sensor error reading unit, 26 target indicated value calculating unit.
Claims (1)
段目充電と、この１段目充電に引き続き前記第１所定電
流値より低い第２所定電流値で前記バッテリに充電する
２段目充電の２段充電を行う充電装置において、 充電中の前記バッテリに流れる電流を検出する電流セン
サと、 前記電流センサの示す指示値に基づき充電制御を行う充
電制御手段と、 前記２段目充電の直前に充電を一旦中止する充電中止制
御手段と、 前記充電中止中に前記電流センサの指示値をセンサ誤差
として読み込むセンサ誤差読み込み手段と、 前記２段目充電において、電流センサが示すべき指示値
を前記第２所定電流値および前記センサ誤差に基づき算
出する指示値算出手段と、を有することを特徴とする充
電装置。1. Charging a battery with a first predetermined current value
A charging device for performing a two-stage charge of a second-stage charge and a second-stage charge for charging the battery with a second predetermined current value lower than the first predetermined current value following the first-stage charge; A current sensor that detects a current flowing through the battery; a charge control unit that performs charge control based on an instruction value indicated by the current sensor; a charge stop control unit that temporarily stops charging immediately before the second-stage charge; A sensor error reading means for reading an indication value of the current sensor as a sensor error therein; and an indication value for calculating an indication value to be indicated by the current sensor based on the second predetermined current value and the sensor error in the second-stage charging. And a calculating means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31285594A JP3216453B2 (en) | 1994-12-16 | 1994-12-16 | Charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31285594A JP3216453B2 (en) | 1994-12-16 | 1994-12-16 | Charging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08171940A JPH08171940A (en) | 1996-07-02 |
| JP3216453B2 true JP3216453B2 (en) | 2001-10-09 |
Family
ID=18034252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31285594A Expired - Fee Related JP3216453B2 (en) | 1994-12-16 | 1994-12-16 | Charging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3216453B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5607569B2 (en) * | 2011-03-31 | 2014-10-15 | トヨタ自動車株式会社 | VEHICLE CHARGING DEVICE, VEHICLE HAVING THE SAME, AND CURRENT SENSOR OFFSET CORRECTION |
-
1994
- 1994-12-16 JP JP31285594A patent/JP3216453B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08171940A (en) | 1996-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7405538B1 (en) | Method and system for charging a NiMH or NiCd battery | |
| US8159185B2 (en) | Battery charger and control method therefor | |
| TWI226738B (en) | Battery control apparatus and management method of battery | |
| US5652500A (en) | Charge control apparatus for battery pack which uses rate of change of battery temperature adjusted by correction factor | |
| US7285936B2 (en) | Charging system for battery-set | |
| US8198863B1 (en) | Model-based battery fuel gauges and methods | |
| US20120290236A1 (en) | Battery condition detecting apparatus | |
| KR20060052273A (en) | Method for controlling secondary battery electric power and power supply unit | |
| JPH0865911A (en) | Battery charging controller and its method | |
| KR100818519B1 (en) | Method and apparatus of controlling battery | |
| JP2005106747A (en) | Method and apparatus for estimating remaining amount of secondary battery | |
| JP2020174530A (en) | Method and system for effective battery cell balancing using duty control | |
| JP2003303627A (en) | Status detecting device and various devices using the same | |
| JP3932675B2 (en) | Battery maximum input / output power estimation device | |
| JP4001725B2 (en) | Battery pack physical quantity measuring device | |
| JP5317583B2 (en) | Charging system and charging device | |
| JP3216453B2 (en) | Charging device | |
| US7129676B2 (en) | Controlling re-charge of a nickel metal-hydride (NiMH) or nickel cadmuim (NiCd) battery | |
| JP3773800B2 (en) | Current detection method for motor-driven electrical equipment | |
| US6417670B1 (en) | Accurate battery current measurement system for a battery care unit | |
| JPS61209372A (en) | Circuit for confirming residual power quantity in battery | |
| JP3802379B2 (en) | Charger | |
| JP2003178811A (en) | Condition detector for storage battery | |
| JPH1051972A (en) | Method and apparatus for charging secondary battery | |
| JPH06343233A (en) | Method and apparatus for charging secondary battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070803 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080803 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080803 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090803 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100803 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110803 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110803 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120803 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130803 Year of fee payment: 12 |
|
| LAPS | Cancellation because of no payment of annual fees |