JP4029591B2 - Charging method - Google Patents

Charging method Download PDF

Info

Publication number
JP4029591B2
JP4029591B2 JP2001263204A JP2001263204A JP4029591B2 JP 4029591 B2 JP4029591 B2 JP 4029591B2 JP 2001263204 A JP2001263204 A JP 2001263204A JP 2001263204 A JP2001263204 A JP 2001263204A JP 4029591 B2 JP4029591 B2 JP 4029591B2
Authority
JP
Japan
Prior art keywords
charging
battery temperature
value
battery
charge
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
Application number
JP2001263204A
Other languages
Japanese (ja)
Other versions
JP2003079066A (en
Inventor
信宏 高野
卓央 荒舘
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.)
Koki Holdings Co Ltd
Original Assignee
Hitachi Koki 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 Hitachi Koki Co Ltd filed Critical Hitachi Koki Co Ltd
Priority to JP2001263204A priority Critical patent/JP4029591B2/en
Publication of JP2003079066A publication Critical patent/JP2003079066A/en
Application granted granted Critical
Publication of JP4029591B2 publication Critical patent/JP4029591B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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

  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Tests Of Electric Status Of Batteries (AREA)

Description

【０００１】
【発明が属する技術分野】
本発明はニッケル・カドミウム電池（以下ニカド電池という）やニッケル・水素電池（以下ニッケル水素電池という）等の２次電池を充電する充電装置に関するものである。
【０００２】
【従来の技術】
電動工具等の電源に用いられているニッケルカドミニウム電池やニッケル水素電池等を充電する方法の１つとして、特開平１１−３５５９７１号に開示の如く、充電時の電池温度及び温度上昇値が高い（低い）時は小さい（大きい）充電電流で充電するようにし、電池温度の上昇を抑えかつ急速に充電し得る充電電流の許容値を、電池温度値及び電池の温度上昇値に基づきマッピングしたマップを、例えば周囲温度と電池温度の温度差に対応して複数記憶し、検出及び演算した電池温度及び電池温度上昇値に基き選択したマップ内から一定周期毎に充電電流許容値を検索し、この検索した充電電流許容値により充電すると共に、電池温度と電池温度上昇値とが、マップ中における温度上昇値が大きい領域または電池温度が高く温度上昇値が中程度の領域である充電末期領域に属する頻度が高いか否かに基づき満充電を判断する充電装置が提案されている。
【０００３】
【発明が解決しようとする課題】
しかしながら、かかる充電装置においては、周囲温度が電池温度に対して高い場合、充電開始直後から電池温度と周囲温度との温度勾配によって温度上昇値が高くなり、このような現象を想定してないマップにおいては充電末期を示す領域において頻繁に充電を行ってしまい、ほとんど充電されることなく満充電と誤判断されて充電不足を生じる恐れがある。
【０００４】
本発明の目的は、上記した従来技術の欠点をなくし、周囲温度が電池温度に対して相対的に所定値以上高い場合においても、充電早切れによる充電不足を起こすことなく充電できるようにすると共に満充電を確実に判断できるようにすることである。
【０００５】
【課題を解決するための手段】
上記目的は、充電完了判断手段により充電完了を判断し、引き続きカウンタ手段の出力に基づき充電開始からの経過時間が所定時間以内の場合は、前記マップ中における充電末期を示す領域に属する頻度が高いか否かに基き充電完了を判断する充電完了判断手段の設定を変更し、再びマップ内の充電電流許容値を電池温度及び電池温度上昇値に応じて検索し、この検索した充電電流許容値により充電を継続すると共に設定を変更した充電完了判断手段により充電完了すなわち満充電を判断することにより達成される。
【０００６】
【発明の実施の形態】
図１は本発明の一実施形態を示す回路図である。１は交流電源、２は複数の素電池を直列接続した電池組であって、素電池に接触または近接して電池温度を検出する例えばサーミスタ等からなる電池温度検出手段２Ａが内蔵されている。３は電池組２に流れる充電電流を検出する電流検出手段、４は充電の開始及び停止を制御する信号を伝達する充電制御信号伝達手段、５は充電電流の信号をＰＷＭ制御ＩＣ２３に帰還する充電電流信号伝達手段である。充電制御伝達信号手段４及び充電電流信号伝達手段５はホトカプラ等からなる。１０は全波整流回路１１と平滑用コンデンサ１２からなる整流平滑回路、２０は高周波トランス２１、ＭＯＳＦＥＴ２２とＰＷＭ制御ＩＣ２３からなるスイッチング回路である。ＰＷＭ制御ＩＣ２３はＭＯＳＦＥＴ２２の駆動パルス幅を変えて整流平滑回路２０の出力電圧を調整するスイッチング電源ＩＣである。３０はダイオード３１、３２、チョークコイル３３、平滑用コンデンサ３４からなる整流平滑回路、４０は抵抗４１、４２からなる電池電圧検出手段で、電池組２の端子電圧を分圧する。５０は演算手段（ＣＰＵ）５１、ＲＯＭ５２、ＲＡＭ５３、カウンタ５４、Ａ／Ｄコンバータ５５、出力ポート５６、リセット入力ポート５７からなるマイコンである。６０は演算増幅器６１、６２、抵抗６３〜６６からなる充電電流制御手段、７０は電源トランス７１、全波整流回路７２、平滑コンデンサ７３、７４、３端子レギュレータ７５、リセットＩＣ７６からなる定電圧電源で、マイコン５０、充電電流制御手段６０等の電源となる。リセットＩＣ７６はマイコン５０を初期状態にするためにリセット入力ポート５７にリセット信号を出力する。８０は充電電流を設定する充電電流設定手段であって、前記出力ポート５６aからの信号に対応して演算増幅器６２の反転入力端に印加する電圧値を変えるものである。
【０００７】
図２は電池温度Ｔ及び電池温度上昇値ΔＴに応じて検索される充電電流の許容値Ｉ１１〜Ｉ６６を示し、また斜線部は充電末期に検索される領域を示す。すなわち電池温度上昇値ΔＴが大きい領域（Ｉ５１〜Ｉ６６）や電池温度Ｔが高く電池温度上昇値ΔＴが中程度の領域（Ｉ４５、Ｉ４６）が充電末期に検索される領域である。なお、マップは電池種及び電池電圧（素電池数）に応じて夫々マップを設ける方が良好な満充電検出が可能になる。
【０００８】
次に図１の回路図、図２のマップ及び図３のフローチャートを参照して本発明充電方法の動作を説明する。
【０００９】
電源を投入するとマイコン５０は出力ポート５６及び充電早切れFlagをイニシャルセットし、電池組２の接続待機状態となる（ステップ１０１）。電池組２が接続されると充電を開始し（ステップ１０２）、引き続き充電開始からの時間をカウントするカウンタ５４をスタートする（ステップ１０３）。次いで充電中の電池温度Ｔを所定周期毎に電池温度検出手段２Ａの出力から検出演算すると共に（ステップ１１０４）、温度上昇値ΔＴを求め（ステップ１０５）、この電池温度値Ｔ及び温度上昇値ΔＴに基づきマイコン５０はマップを検索して温度上昇を抑えながら充電し得る充電電流許容値を求める（ステップ１０６）。
【００１０】
次にマイコン５０は、検索した充電電流許容値が図２の選択したマップ中で斜線部で示す充電末期領域に入ったか否かを判断する（ステップ１０７）。充電末期領域に入らない時はステップ１１３に進みステップ１０６で求めた許容充電電流値での充電を継続してステップ１０４に戻る。充電末期領域に入った時は、充電末期領域に入る確率が高いか否かを判断する（ステップ１０８）。これは例えば３周期連続して充電末期領域に入った場合に充電末期領域に入る確率が高いと判断する。充電末期領域に入ったしても、３周期連続充電末期領域に入らなかった場合は、充電末期領域に入る確率が高いと判断されず、ステップ１１３を介してステップ１０４に戻る。３周期連続充電末期領域に入った場合は、充電末期領域に入る確率が高いと判断し、引き続き充電早切れＦｌａｇがセットされているか否かの判断を行い（ステップ１０９）、Ｆｌａｇ＝１でない場合は、引き続きカウンタ５４の出力に基づいて充電開始からの経過時間が所定時間以上か否かの判断を行う（ステップ１１０）。これは、充電開始直後から電池温度と周囲温度との温度勾配によって温度上昇値が高くなり、その結果、充電完了と誤判断する可能性があるので、充電開始から電池温度と周囲温度との温度勾配の影響が少なくなるまでの経過時間の監視を行い、経過時間が所定時間経過している場合前記充電完了により満充電と判断して充電を停止する（ステップ１１４）。それゆえ所定時間の設定は電池温度と周囲温度との温度勾配の影響が少くなくなる時間に設定すれば良い。
【００１１】
ステップ１１０において所定時間経過していない場合は、充電開始直後から電池温度と周囲温度との温度勾配によって温度上昇値が高くなり、電池組２を満充電と誤判断した可能性があるので、再チェックするために、充電末期領域内に入る確率の設定を変更する（ステップ１１１）。設定の変更は、例えば前述した３周期連続して充電末期領域に入った場合に充電末期領域に入る確率が高いと判断するようにしたが、この３周期連続を多くするとか、もう一度３周期連続して充電末期領域に入ったことを判断するようにするとか種々の方法がある。ステップ１１１で設定変更後、引き続き、一度電池温度と周囲温度との温度勾配によって温度上昇値が高くなり、充電早切れを引き起こした可能性があるので、充電早切れＦｌａｇを１にセットし（ステップ１１２）、ステップ１１３を介してステップ１０４に戻る。ステップ１０９において、充電早切れＦｌａｇが１にセットされている場合は、一度充電完了と判断し、再び充電完了と判断したので、この時は満充電と最終判断し、ステップ１１０をスキップして充電を完了させる。
【００１２】
以上のように上記実施形態においては、所定時間内で充電末期領域に入ったと判断した時は、電池温度と周囲温度との温度勾配によって温度上昇が高くなり、これを起因として満充電と判断する可能性があるので、再度充電末期領域に入る確率を再チェックするようし、これにより充電早切れによる充電不足を起こすことなく充電できるようにすると共に、満充電を確実に判別できるようにすることである。また充電装置の構成も簡単になる。
【００１３】
【発明の効果】
以上のように本発明によれば、周囲温度が電池温度に対して高い場合、充電開始直後から電池温度と周囲温度との温度勾配によって温度上昇値が高くなったとしても充電早切れによる充電不足をなくし、確実な満充電判断が可能となる。
【図面の簡単な説明】
【図１】本発明充電方法を採用した充電装置の一実施形態を示す回路図。
【図２】マップの一例の内容を示す説明図。
【図３】本発明充電方法の動作説明用フローチャート。
【符号の説明】
２は電池組、２Ａは電池温度検出手段、５０はマイコンである。[0001]
[Technical field to which the invention belongs]
The present invention relates to a charging device for charging a secondary battery such as a nickel-cadmium battery (hereinafter referred to as a nickel-cadmium battery) or a nickel-hydrogen battery (hereinafter referred to as a nickel-hydrogen battery).
[0002]
[Prior art]
As one of methods for charging a nickel cadmium battery, a nickel hydride battery, or the like used for a power source of an electric power tool or the like, as disclosed in JP-A-11-355971, a battery temperature and a temperature increase value during charging are high ( When the battery is low, the battery is charged with a small (large) charge current, and a map that maps the allowable value of the charge current that can be rapidly charged while suppressing the rise in battery temperature based on the battery temperature value and the battery temperature rise value. For example, a plurality of stored values corresponding to the temperature difference between the ambient temperature and the battery temperature are stored, and the charging current allowable value is searched for every predetermined period from the map selected based on the detected and calculated battery temperature and the battery temperature increase value. The battery temperature and the battery temperature rise value are the areas where the temperature rise value is large in the map or the battery temperature is high and the temperature rise value is medium. Charging apparatus often belonging to the charging end region which is a region of time to determine the full charge based on whether high or not have been proposed.
[0003]
[Problems to be solved by the invention]
However, in such a charging device, when the ambient temperature is higher than the battery temperature, the temperature increase value increases due to the temperature gradient between the battery temperature and the ambient temperature immediately after the start of charging, and the map does not assume such a phenomenon. In this case, charging is frequently performed in a region indicating the end of charging, and there is a risk of being insufficiently charged due to being erroneously determined to be fully charged with almost no charging.
[0004]
The object of the present invention is to eliminate the drawbacks of the prior art described above, and to enable charging without causing shortage of charging due to premature charging even when the ambient temperature is higher than a predetermined value relative to the battery temperature. It is to be able to reliably determine full charge.
[0005]
[Means for Solving the Problems]
The purpose is to determine the completion of charging by the charging completion determining means, and when the elapsed time from the start of charging is within a predetermined time based on the output of the counter means, the frequency of belonging to the region indicating the end of charging in the map is high Change the setting of the charging completion judging means for judging the completion of charging based on whether or not, and again search the allowable charging current value in the map according to the battery temperature and the battery temperature rise value, and by this searched charging current allowable value This is achieved by continuing the charging and determining charging completion, that is, full charging by the charging completion determining means whose setting has been changed.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a circuit diagram showing an embodiment of the present invention. Reference numeral 1 denotes an AC power source. Reference numeral 2 denotes a battery set in which a plurality of unit cells are connected in series, and a battery temperature detecting means 2A composed of, for example, a thermistor for detecting the battery temperature in contact with or close to the unit cells is incorporated. 3 is a current detecting means for detecting a charging current flowing in the battery set 2, 4 is a charging control signal transmitting means for transmitting a signal for controlling the start and stop of charging, and 5 is a charging for returning a charging current signal to the PWM control IC 23. Current signal transmission means. The charging control transmission signal means 4 and the charging current signal transmission means 5 are made of a photocoupler or the like. Reference numeral 10 denotes a rectifying / smoothing circuit comprising a full-wave rectifying circuit 11 and a smoothing capacitor 12, and 20 a switching circuit comprising a high-frequency transformer 21, a MOSFET 22 and a PWM control IC 23. The PWM control IC 23 is a switching power supply IC that adjusts the output voltage of the rectifying and smoothing circuit 20 by changing the drive pulse width of the MOSFET 22. A rectifying / smoothing circuit 30 includes diodes 31 and 32, a choke coil 33, and a smoothing capacitor 34. A battery voltage detecting unit 40 includes resistors 41 and 42, and divides the terminal voltage of the battery set 2. Reference numeral 50 denotes a microcomputer comprising a calculation means (CPU) 51, ROM 52, RAM 53, counter 54, A / D converter 55, output port 56, and reset input port 57. 60 is a charging current control means comprising operational amplifiers 61 and 62 and resistors 63 to 66, and 70 is a constant voltage power source comprising a power transformer 71, a full-wave rectifier circuit 72, smoothing capacitors 73 and 74, a three-terminal regulator 75, and a reset IC 76. The power source for the microcomputer 50, the charging current control means 60, and the like. The reset IC 76 outputs a reset signal to the reset input port 57 in order to put the microcomputer 50 into an initial state. Reference numeral 80 denotes charging current setting means for setting a charging current, which changes a voltage value applied to the inverting input terminal of the operational amplifier 62 in response to a signal from the output port 56a.
[0007]
FIG. 2 shows allowable values I11 to I66 of the charging current searched according to the battery temperature T and the battery temperature increase value ΔT, and the hatched portion shows a region searched at the end of charging. That is, a region where the battery temperature rise value ΔT is large (I51 to I66) and a region where the battery temperature T is high and the battery temperature rise value ΔT is medium (I45, I46) are searched at the end of charging. In addition, it is possible to detect full charge better by providing maps according to the battery type and battery voltage (number of unit cells).
[0008]
Next, the operation of the charging method of the present invention will be described with reference to the circuit diagram of FIG. 1, the map of FIG. 2, and the flowchart of FIG.
[0009]
When the power is turned on, the microcomputer 50 initially sets the output port 56 and the pre-charge flag, and enters the connection standby state of the battery group 2 (step 101). When the battery set 2 is connected, charging is started (step 102), and the counter 54 that continuously counts the time from the start of charging is started (step 103). Next, the battery temperature T during charging is detected and calculated from the output of the battery temperature detecting means 2A at predetermined intervals (step 1104), a temperature rise value ΔT is obtained (step 105), and the battery temperature value T and the temperature rise value ΔT are obtained. Based on the above, the microcomputer 50 searches the map to obtain a charge current allowable value that can be charged while suppressing a temperature rise (step 106).
[0010]
Next, the microcomputer 50 determines whether or not the retrieved charge current allowable value has entered the end-of-charge region indicated by the hatched portion in the map selected in FIG. 2 (step 107). When it does not enter the end-of-charge region, the process proceeds to step 113 and the charging at the allowable charging current value obtained at step 106 is continued and the process returns to step 104. When entering the end-of-charge region, it is determined whether the probability of entering the end-of-charge region is high (step 108). For example, it is determined that the probability of entering the end-of-charge region is high when entering the end-of-charge region for three consecutive cycles. If the charge end-of-charge region is not entered but the 3-cycle continuous charge end-of-charge region is not entered, it is not determined that the probability of entering the charge end-of-charge region is high, and the process returns to step 104 via step 113. If the three-cycle continuous charge end region is entered, it is determined that the probability of entering the end-of-charge region is high, and it is subsequently determined whether or not the pre-charge flag is set (step 109). Then, based on the output of the counter 54, it is determined whether or not the elapsed time from the start of charging is a predetermined time or more (step 110). This is because the temperature rise value increases due to the temperature gradient between the battery temperature and the ambient temperature immediately after the start of charging, and as a result, it may be erroneously determined that charging is complete. The elapsed time until the influence of the gradient is reduced is monitored, and if the elapsed time has passed a predetermined time, it is determined that the charging is complete and charging is stopped (step 114). Therefore, the predetermined time may be set to a time at which the influence of the temperature gradient between the battery temperature and the ambient temperature is small.
[0011]
If the predetermined time has not elapsed in step 110, the temperature rise value increases due to the temperature gradient between the battery temperature and the ambient temperature immediately after the start of charging, and the battery set 2 may be erroneously determined to be fully charged. In order to check, the setting of the probability of entering the end-of-charge region is changed (step 111). For example, when changing the setting, it is judged that the probability of entering the end-of-charge region is high when entering the end-of-charge region for the three consecutive cycles described above. Then, there are various methods such as determining that the end of charging area has been entered. After changing the setting in step 111, the temperature rise value once increased due to the temperature gradient between the battery temperature and the ambient temperature, which may have caused premature charging, so set the premature charging flag to 1 (step 112), the process returns to step 104 through step 113. In Step 109, when the pre-charge flag is set to 1, it is determined that charging is completed once, and it is determined that charging is completed again. At this time, it is finally determined that the battery is fully charged, and charging is performed by skipping Step 110. To complete.
[0012]
As described above, in the above embodiment, when it is determined that the end-of-charge region has been entered within a predetermined time, the temperature rise increases due to the temperature gradient between the battery temperature and the ambient temperature, and it is determined that the battery is fully charged due to this. Since there is a possibility, re-check the probability of entering the end-of-charge region again, so that charging can be performed without causing insufficient charging due to premature charging, and full charge can be reliably determined It is. Also, the configuration of the charging device is simplified.
[0013]
【The invention's effect】
As described above, according to the present invention, when the ambient temperature is higher than the battery temperature, even if the temperature rise value increases due to the temperature gradient between the battery temperature and the ambient temperature immediately after the start of charging, charging is insufficient due to premature charging This makes it possible to make a reliable full charge determination.
[Brief description of the drawings]
FIG. 1 is a circuit diagram showing an embodiment of a charging apparatus employing a charging method of the present invention.
FIG. 2 is an explanatory diagram showing the contents of an example of a map.
FIG. 3 is a flowchart for explaining the operation of the charging method of the present invention.
[Explanation of symbols]
2 is a battery set, 2A is a battery temperature detecting means, and 50 is a microcomputer.

Claims (2)

電池の温度上昇値を抑えながら充電し得る充電電流の許容値を、電池温度及び電池温度の上昇値とに基づきマッピングしたマップを記憶する記憶手段と、電池温度を検出する電池温度検出手段と、電池温度検出手段の出力に基づき所定周期ごとの電池温度の上昇値を演算する電池温度上昇値検出手段と、電池温度検出手段により検出された電池温度及び電池温度上昇検出手段により検出された電池温度上昇値とが、前記マップ中における充電末期を示す領域に属する頻度が高いか否かに基き充電完了を判断する充電完了判断手段と、充電開始からの経過時間をカウントするカウンタ手段とを備え、  A storage means for storing a map in which an allowable value of a charging current that can be charged while suppressing a temperature rise value of the battery based on the battery temperature and the battery temperature rise value; a battery temperature detection means for detecting the battery temperature; A battery temperature rise value detecting means for calculating a battery temperature rise value for each predetermined period based on an output of the battery temperature detecting means; a battery temperature detected by the battery temperature detecting means; and a battery temperature detected by the battery temperature rise detecting means. A charge completion determination means for determining completion of charging based on whether or not the increase value is frequently in the region indicating the end of charge in the map, and a counter means for counting an elapsed time from the start of charging,
前記マップ内の充電電流の許容値を電池温度及び電池温度上昇値に応じて検索し、この検索した充電電流許容値により充電すると共にこの充電過程で充電完了判断手段が充電完了と判断した際の充電開始からの経過時間が所定値以内の場合満充電と判断せず、充電完了判断手段が充電完了と判断する設定を変更して前記充電電流許容値による充電を継続し、この充電継続中に充電完了判断手段が充電完了を判断した時満充電と判断して充電を終了することを特徴とした充電方法。The charging current allowable value in the map is searched according to the battery temperature and the battery temperature increase value, and charging is performed according to the searched charging current allowable value, and the charging completion determining means determines that charging is completed in this charging process. If the elapsed time from the start of charging is within a predetermined value, it is not determined that the battery is fully charged, and the charging completion determining means changes the setting for determining that charging is complete, and continues charging with the allowable charging current value. A charging method characterized in that when the charging completion determination means determines that charging is complete, it determines that the charging is complete and ends charging. 電池の温度上昇値を抑えながら充電し得る充電電流の許容値を、電池温度及び電池温度の上昇値とに基づきマッピングしたマップを記憶する記憶手段と、電池温度を検出する電池温度検出手段と、電池温度検出手段の出力に基づき所定周期ごとの電池温度の上昇値を演算する電池温度上昇値検出手段と、電池温度検出手段により検出された電池温度及び電池温度上昇検出手段により検出された電池温度上昇値とが、前記マップ中における充電末期を示す領域に属する頻度が高いか否かに基き充電完了と判断する充電完了判断手段と、充電開始からの経過時間をカウントするカウンタ手段とを備え、次のステップからなる充電方法。A storage means for storing a map in which an allowable value of a charging current that can be charged while suppressing a temperature rise value of the battery based on the battery temperature and the battery temperature rise value; a battery temperature detection means for detecting the battery temperature; A battery temperature rise value detecting means for calculating a battery temperature rise value for each predetermined period based on an output of the battery temperature detecting means; a battery temperature detected by the battery temperature detecting means; and a battery temperature detected by the battery temperature rise detecting means. A charge completion judging means for judging that charging is completed based on whether or not the increase value has a high frequency belonging to the region indicating the end of charging in the map, and a counter means for counting an elapsed time from the start of charging, A charging method comprising the following steps.
ａ．電池温度及び電池温度上昇値に応じて前記マップ内の充電電流許容値を検索するステップ。a. Searching for a charging current allowable value in the map according to a battery temperature and a battery temperature increase value;
ｂ．上記ステップで検索した充電電流許容値で充電するステップ。b. Charging with the charge current allowable value searched in the above step.
ｃ．前記充電電流許容値が充電末期領域内の値か否かを判断し、領域内の値でない時ステップａに戻るステップ。c. Determining whether the charge current allowable value is a value in the end-of-charge region, and returning to step a when the value is not in the region.
ｄ．前記充電電流許容値が充電末期領域内の値か否かを判断し、領域内の値であり、充電末期領域に属する頻度が高い時仮の充電完了と判断するステップ。d. Determining whether the allowable charging current is a value in the end-of-charge region, and determining that provisional charging is complete when the value is in the region and the frequency of belonging to the end-of-charge region is high.
ｅ．ステップｄにおいて仮の充電完了と判断された場合、充電開始からの経過時間が所定値以下なら充電完了判断手段が充電完了と判断する設定を変更してステップａに戻り、充電開始からの経過時間が所定値を超えたら満充電と判断するステップ。e. If it is determined in step d that provisional charging is complete, if the elapsed time from the start of charging is less than or equal to a predetermined value, the setting for determining that the charging completion is determined to be complete is changed and the process returns to step a. A step of determining that the battery is fully charged when the value exceeds a predetermined value.
ｆ．充電完了判断手段が前記設定を変更した後の充電継続時に再度ステップｄによる充電完了の判断が出された時満充電と判断するステップ。f. A step of determining full charge when a charge completion determination is made again in step d when charging is continued after the charge completion determining means changes the setting.
ｇ．ステップｅ、ｆにおいて満充電と判断された時充電を停止するステップ。g. A step of stopping charging when it is determined that the battery is fully charged in steps e and f.
JP2001263204A 2001-08-31 2001-08-31 Charging method Expired - Fee Related JP4029591B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001263204A JP4029591B2 (en) 2001-08-31 2001-08-31 Charging method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001263204A JP4029591B2 (en) 2001-08-31 2001-08-31 Charging method

Publications (2)

Publication Number Publication Date
JP2003079066A JP2003079066A (en) 2003-03-14
JP4029591B2 true JP4029591B2 (en) 2008-01-09

Family

ID=19089990

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001263204A Expired - Fee Related JP4029591B2 (en) 2001-08-31 2001-08-31 Charging method

Country Status (1)

Country Link
JP (1) JP4029591B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006129619A (en) 2004-10-29 2006-05-18 Hitachi Koki Co Ltd Battery charging equipment
CN111162567B (en) * 2018-11-07 2023-12-12 青岛港国际股份有限公司 Automatic wharf AGV charging method and system
CN114407728B (en) * 2022-02-28 2023-05-02 重庆长安新能源汽车科技有限公司 Vehicle power battery charging control method, system, automobile and computer readable storage medium
CN115932614B (en) * 2022-12-13 2023-08-29 惠州恒立能源科技有限公司 Method and system for detecting battery charge state of charge and discharge of lithium battery energy storage system

Also Published As

Publication number Publication date
JP2003079066A (en) 2003-03-14

Similar Documents

Publication Publication Date Title
US6949914B2 (en) Charging apparatus
US5268630A (en) Method and apparatus for varying the sample rate of a fast battery charger
JP4952971B2 (en) Battery life discriminator
JPH07288936A (en) Charging of storage battery
JPH11252814A (en) Charging apparatus and method
JP3637758B2 (en) Battery charging method
JP3772665B2 (en) Battery charger
JP2009106118A (en) Charging device
JP4029591B2 (en) Charging method
JP3695266B2 (en) Full charge detection method
JP2006166641A (en) Battery charger
JP3951297B2 (en) Charger
JP3945194B2 (en) Charger
JP2004171796A (en) Charging device
JP3656379B2 (en) Battery charger
JP4345290B2 (en) Charger
JPH1127866A (en) Method of charging battery
JP3336790B2 (en) Battery life judgment device for battery charger
JP3722091B2 (en) Battery assembly life discriminator for charger
JPH11185825A (en) Charging method of battery
JP3635900B2 (en) Battery charger
JP4182543B2 (en) Charger
JP3042200B2 (en) Battery charger
JP3951296B2 (en) Charger
JP2004135460A (en) Charger

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050318

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070320

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20070626

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070726

A911 Transfer of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20070831

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: 20070925

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20071008

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

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

Free format text: PAYMENT UNTIL: 20101026

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20101026

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20111026

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20111026

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20121026

Year of fee payment: 5

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

Free format text: PAYMENT UNTIL: 20131026

Year of fee payment: 6

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

Free format text: PAYMENT UNTIL: 20141026

Year of fee payment: 7

LAPS Cancellation because of no payment of annual fees