JPH08191546A - Charger - Google Patents
ChargerInfo
- Publication number
- JPH08191546A JPH08191546A JP7002230A JP223095A JPH08191546A JP H08191546 A JPH08191546 A JP H08191546A JP 7002230 A JP7002230 A JP 7002230A JP 223095 A JP223095 A JP 223095A JP H08191546 A JPH08191546 A JP H08191546A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- charging
- storage battery
- charging current
- battery
- 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
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、容量の低下した蓄電池
を過充電することで蓄電池の容量を回復させるリフレッ
シュ充電を少なくとも行なう充電装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging device which performs at least refresh charging for recovering the capacity of a storage battery by overcharging the storage battery having a reduced capacity.
【０００２】[0002]
【従来の技術】近年、電源として蓄電池が広く利用され
るようになってきている。ところが、一般的に蓄電池に
は所謂メモリ効果が存在することが知られている。メモ
リ効果とは、蓄電池に浅い充放電を繰り返すことにより
蓄電池の見かけ上の容量が低下してしまう現象であり、
蓄電池を使用している間にメモリ効果が生じると、蓄電
池を満充電して負荷に給電を行なっても所定の時間だけ
負荷を駆動させることができないことがある。2. Description of the Related Art In recent years, storage batteries have been widely used as a power source. However, it is generally known that a storage battery has a so-called memory effect. The memory effect is a phenomenon in which the apparent capacity of a storage battery decreases as the storage battery is repeatedly charged and discharged.
If a memory effect occurs while using the storage battery, the load may not be driven for a predetermined time even if the storage battery is fully charged and the load is supplied with power.
【０００３】また、負荷への給電を行なわずに蓄電池を
長期間放置しておくと、蓄電池が不活性状態になり、メ
モリ効果が生じた場合と同様に所定の時間だけ負荷を駆
動させることができないことがある。そこで、従来は、
蓄電池を充電する際に一旦蓄電池を完全に放電させてか
ら充電したり、所定の充電回数毎に電池容量の約２５０
％までの過充電を行なうことによって、メモリ効果が生
じたり不活性となった蓄電池の容量を回復させる方法が
採られている。ここで、上記のように蓄電池を一旦完全
放電してから充電したり、トリクル充電により過充電す
るなどして蓄電池の容量を回復させる動作は、一般にリ
フレッシュ充電と呼ばれている。Further, if the storage battery is left for a long time without supplying power to the load, the storage battery becomes inactive and the load can be driven for a predetermined time as in the case where the memory effect occurs. There are things you can't do. So, conventionally,
When the storage battery is charged, the storage battery is first completely discharged and then charged, or the battery capacity of about 250
A method of recovering the capacity of a storage battery which has a memory effect or is inactive by overcharging up to 100% is adopted. Here, the operation of recovering the capacity of the storage battery by charging the storage battery once after being completely discharged or overcharging by trickle charging as described above is generally called refresh charging.
【０００４】ここで、上述のように過充電によるリフレ
ッシュ充電を行なう例としては、特開昭６３−２３１８
８０号公報に記載されたような充電制御方式がある。こ
の充電制御方式によれば、所定の充電回数毎に通常の充
電における充電電流と同じ大きさの充電電流により蓄電
池を過充電している。An example of performing refresh charging by overcharging as described above is disclosed in Japanese Patent Laid-Open No. 63-2318.
There is a charge control system as described in Japanese Patent No. 80. According to this charging control method, the storage battery is overcharged with a charging current of the same magnitude as the charging current in normal charging every predetermined number of times of charging.
【０００５】[0005]
【発明が解決しようとする課題】ところが、上述のよう
に蓄電池を一旦完全放電してから満充電するようなリフ
レッシュ充電では、蓄電池を完全放電するための放電回
路が必要となり、しかも、放電回路における損失が大き
いために充電装置全体のコスト上昇や形状拡大を招くと
いう問題があった。However, as described above, in refresh charging in which the storage battery is once completely discharged and then fully charged, a discharge circuit for completely discharging the storage battery is required, and further, in the discharge circuit. Since the loss is large, there is a problem that the cost of the entire charging device is increased and the shape is expanded.
【０００６】また、特開昭６３−２３１８８０号公報に
記載されたようなリフレッシュ充電であると、通常の充
電を行なう場合の充電電流値とリフレッシュ充電を行な
う場合の充電電流値とが同一であるから、リフレッシュ
充電により蓄電池を過充電した場合に蓄電池の電池温度
が必要以上に上昇し、温度上昇によって蓄電池が劣化し
てしまう可能性があるという問題があった。Further, in the case of refresh charging as described in Japanese Patent Laid-Open No. 63-231880, the charging current value for normal charging and the charging current value for refresh charging are the same. Therefore, there is a problem in that when the storage battery is overcharged by refresh charging, the battery temperature of the storage battery rises more than necessary, and the storage battery may deteriorate due to the temperature rise.
【０００７】本発明は上記問題点の解決を目的とするも
のであり、蓄電池に負担をかけずに比較的に短時間でリ
フレッシュ充電を行なうことができる充電装置を提供し
ようとするものである。An object of the present invention is to solve the above problems, and an object of the present invention is to provide a charging device which can perform refresh charging in a relatively short time without burdening the storage battery.
【０００８】[0008]
【課題を解決するための手段】本発明では、上記目的を
達成するために、容量の低下した蓄電池を過充電するこ
とで蓄電池の容量を回復させるリフレッシュ充電を少な
くとも行なう充電装置であって、蓄電池に充電電流を供
給する充電電流供給手段と、この充電電流供給手段を制
御して充電電流の大きさを変化させる制御手段と、蓄電
池が満充電されたことを検出する検出手段とを備え、こ
の検出手段により満充電が検出された後、制御手段が充
電電流供給手段を制御して少なくとも大小２通りの電流
値の充電電流を所定の順序で切り換える過充電サイクル
にてリフレッシュ充電を行なうことを特徴とする。In order to achieve the above object, the present invention is a charging device for performing at least refresh charging for recovering the capacity of a storage battery by overcharging it. A charging current supply means for supplying a charging current to the battery, a control means for controlling the charging current supply means to change the magnitude of the charging current, and a detection means for detecting that the storage battery is fully charged. After full-charge is detected by the detection means, the control means controls the charging current supply means to perform refresh charging in an overcharge cycle in which at least two large and small current values are switched in a predetermined order. And
【０００９】また、請求項２の発明のように、蓄電池の
温度を検出する電池温度検出手段を設け、この電池温度
検出手段で検出された電池温度が所定の上限温度から下
限温度までの範囲内を往復する期間が過充電サイクルの
１サイクルとなるように制御手段が充電電流供給手段を
制御するようにすればよい。あるいは、請求項３の発明
のように、限時手段を具備し、限時手段による所定の限
時時間が過充電サイクルの１サイクルとなるように制御
手段が充電電流供給手段を制御するようにしてもよい。According to the second aspect of the present invention, a battery temperature detecting means for detecting the temperature of the storage battery is provided, and the battery temperature detected by the battery temperature detecting means is within a predetermined upper limit temperature to a lower limit temperature. The control means may control the charging current supply means such that the period of reciprocating the charging / discharging cycle is one cycle of the overcharge cycle. Alternatively, as in the third aspect of the invention, the charging means may be provided with the time-limit means, and the control means may control the charging current supply means so that the predetermined time-limit time by the time-limit means is one cycle of the overcharge cycle. .
【００１０】さらに、請求項４の発明のように、制御手
段が充電電流供給手段を制御して蓄電池を満充電する通
常充電モードと、制御手段が充電電流供給手段を制御し
て少なくとも大小２通りの電流値の充電電流を所定の順
序で切り換える過充電サイクルにてリフレッシュ充電を
行なうリフレッシュ充電モードとを切り換える切換手段
を備えてもよい。Further, as in the invention of claim 4, a normal charging mode in which the control means controls the charging current supply means to fully charge the storage battery, and a control means controls the charging current supply means to provide at least two types of large and small. A switching means may be provided for switching between a refresh charging mode in which refresh charging is performed in an overcharge cycle in which the charging current having the current value of 1 is switched in a predetermined order.
【００１１】なお、請求項５の発明のように、周囲の温
度を検出する周囲温度検出手段を具備し、この周囲温度
検出手段により検出した周囲温度に所定温度を足して上
限温度とし、この上限温度からある一定温度だけ低い温
度を下限温度とすればよい。あるいは、請求項６の発明
のように、充電しようとする蓄電池の仕様により規定さ
れる最大の温度を上限温度とするとともに、この上限温
度からある一定温度だけ低い温度を下限温度としてもよ
い。According to the fifth aspect of the present invention, an ambient temperature detecting means for detecting the ambient temperature is provided, and a predetermined temperature is added to the ambient temperature detected by the ambient temperature detecting means to obtain an upper limit temperature. A temperature lower than the temperature by a certain constant temperature may be set as the lower limit temperature. Alternatively, as in the invention of claim 6, the maximum temperature defined by the specifications of the storage battery to be charged may be set as the upper limit temperature, and the temperature lower than the upper limit temperature by a certain temperature may be set as the lower limit temperature.
【００１２】また、請求項７の発明のように、電池温度
検出手段を周囲温度検出手段とし、蓄電池が満充電され
るまでの期間において電池温度検出手段により検出され
た電池温度のうち最低の電池温度を周囲温度とすればよ
い。あるいは、請求項８の発明のように、電池温度検出
手段を周囲温度検出手段とし、蓄電池への充電を開始し
た時点で電池温度検出手段により検出された電池温度を
周囲温度としてもよい。According to the invention of claim 7, the battery temperature detecting means is the ambient temperature detecting means, and the lowest battery temperature among the battery temperatures detected by the battery temperature detecting means in the period until the storage battery is fully charged. The temperature may be ambient temperature. Alternatively, as in the invention of claim 8, the battery temperature detecting means may be the ambient temperature detecting means, and the battery temperature detected by the battery temperature detecting means at the time when the charging of the storage battery is started may be the ambient temperature.
【００１３】また、請求項９の発明のように、リフレッ
シュ充電モードにおいては、制御手段が蓄電池を満充電
するまでは充電電流供給手段を制御して第１の充電電流
にて蓄電池を充電し、蓄電池を満充電した後さらに制御
手段が充電電流供給手段を制御して第１の充電電流より
も小さい第２の充電電流及び第２の充電電流よりも小さ
い第３の充電電流を切り換えて蓄電池を過充電するよう
にすればよい。In the refresh charge mode, the charging current supplying means is controlled to charge the storage battery with the first charging current until the control means fully charges the storage battery. After the storage battery is fully charged, the control means further controls the charging current supply means to switch the second charging current smaller than the first charging current and the third charging current smaller than the second charging current to switch the storage battery. It should be overcharged.
【００１４】なお、請求項１０の発明のように、リフレ
ッシュ充電モードにおいて、充電電流値とその充電電流
が供給されていた時間の積を充電量とするとともに充電
量の積算値が所定値に達したら充電電流供給手段による
蓄電池への充電電流の供給を停止させるリフレッシュ充
電完了検出手段を備えればよい。According to the tenth aspect of the invention, in the refresh charge mode, the product of the charging current value and the time during which the charging current is supplied is used as the charging amount, and the integrated value of the charging amount reaches the predetermined value. Then, refresh charging completion detecting means for stopping the supply of the charging current to the storage battery by the charging current supplying means may be provided.
【００１５】[0015]
【作用】上記構成によれば、蓄電池に充電電流を供給す
る充電電流供給手段と、この充電電流供給手段を制御し
て充電電流の大きさを変化させる制御手段と、蓄電池が
満充電されたことを検出する検出手段とを備え、この検
出手段により満充電が検出された後、制御手段が充電電
流供給手段を制御して少なくとも大小２通りの電流値の
充電電流を所定の順序で切り換える過充電サイクルにて
リフレッシュ充電を行なうようにしたから、蓄電池を過
充電するリフレッシュ充電を行なう際の蓄電池の温度上
昇を抑えることができ、しかも、比較的に短時間でリフ
レッシュ充電を行なうことができる。According to the above construction, the charging current supply means for supplying the charging current to the storage battery, the control means for controlling the charging current supply means to change the magnitude of the charging current, and the storage battery being fully charged. And a detection unit for detecting the full charge, and after the detection unit detects the full charge, the control unit controls the charging current supply unit to switch the charging current having at least two large and small current values in a predetermined order. Since the refresh charge is performed in the cycle, the temperature rise of the storage battery during the refresh charge for overcharging the storage battery can be suppressed, and the refresh charge can be performed in a relatively short time.
【００１６】また、請求項２の発明のように、蓄電池の
温度を検出する電池温度検出手段を設け、この電池温度
検出手段で検出された電池温度が所定の上限温度から下
限温度までの範囲内を往復する期間が過充電サイクルの
１サイクルとなるように制御手段が充電電流供給手段を
制御するようにすれば、リフレッシュ充電の際に蓄電池
の電池温度が上記上限温度より高くなることがなく、蓄
電池の温度上昇をより抑制することができる。Further, as in the invention of claim 2, a battery temperature detecting means for detecting the temperature of the storage battery is provided, and the battery temperature detected by the battery temperature detecting means is within a range from a predetermined upper limit temperature to a lower limit temperature. If the control means controls the charging current supply means such that the period of reciprocating the battery is one cycle of the overcharge cycle, the battery temperature of the storage battery does not become higher than the upper limit temperature during refresh charging, It is possible to further suppress the temperature rise of the storage battery.
【００１７】あるいは、請求項３の発明のように、限時
手段を具備し、限時手段による所定の限時時間が過充電
サイクルの１サイクルとなるように制御手段が充電電流
供給手段を制御するようにすれば、簡単な構成により蓄
電池の温度上昇を抑えることができる。さらに、請求項
４の発明のように、制御手段が充電電流供給手段を制御
して蓄電池を満充電する通常充電モードと、制御手段が
充電電流供給手段を制御して少なくとも大小２通りの電
流値の充電電流を所定の順序で切り換える過充電サイク
ルにてリフレッシュ充電を行なうリフレッシュ充電モー
ドとを切り換える切換手段を備えれば、使用者が切換手
段によって任意にリフレッシュ充電を行なうことができ
る。Alternatively, as in the third aspect of the present invention, the control means controls the charging current supply means so that the time limit means is provided and the predetermined time limit by the time limit means is one cycle of the overcharge cycle. Then, the temperature rise of the storage battery can be suppressed with a simple configuration. Furthermore, as in the invention of claim 4, the control means controls the charging current supply means to fully charge the storage battery, and the control means controls the charging current supply means to provide at least two large and small current values. If the switching means for switching between the refresh charging mode for performing the refresh charging in the overcharging cycle for switching the charging current of the above in a predetermined order is provided, the user can arbitrarily perform the refresh charging by the switching means.
【００１８】なお、請求項５の発明のように、周囲の温
度を検出する周囲温度検出手段を具備し、この周囲温度
検出手段により検出した周囲温度に所定温度を足して上
限温度とし、この上限温度からある一定温度だけ低い温
度を下限温度とすれば、上限温度と下限温度とを容易に
設定することができる。あるいは、請求項６の発明のよ
うに、充電しようとする蓄電池の仕様により規定される
最大の温度を上限温度とするとともに、この上限温度か
らある一定温度だけ低い温度を下限温度とすれば、構成
を比較的に簡素化できるとともに上限温度と下限温度と
を周囲の温度に影響されることなく常時略一定とするこ
とができる。As in the fifth aspect of the present invention, an ambient temperature detecting means for detecting the ambient temperature is provided, and a predetermined temperature is added to the ambient temperature detected by the ambient temperature detecting means to obtain an upper limit temperature. By setting the temperature lower than the temperature by a certain constant temperature as the lower limit temperature, the upper limit temperature and the lower limit temperature can be easily set. Alternatively, as in the invention of claim 6, the maximum temperature defined by the specifications of the storage battery to be charged is set as the upper limit temperature, and a temperature lower than the upper limit temperature by a certain temperature is set as the lower limit temperature. Can be relatively simplified, and the upper limit temperature and the lower limit temperature can be kept substantially constant without being affected by the ambient temperature.
【００１９】また、請求項７の発明のように、電池温度
検出手段を周囲温度検出手段とし、蓄電池が満充電され
るまでの期間において電池温度検出手段により検出され
た電池温度のうち最低の電池温度を周囲温度とすれば、
放電直後の電池温度が上昇している状態においても、上
限温度と下限温度とを容易に設定することができる。あ
るいは、請求項８の発明のように、電池温度検出手段を
周囲温度検出手段とし、蓄電池への充電を開始した時点
で電池温度検出手段により検出された電池温度を周囲温
度とすれば、放電後に長時間放置されて電池温度の低下
した蓄電池に対しても上限温度と下限温度とを容易に設
定することができる。According to the invention of claim 7, the battery temperature detecting means is the ambient temperature detecting means, and the lowest battery temperature among the battery temperatures detected by the battery temperature detecting means in the period until the storage battery is fully charged. If the temperature is the ambient temperature,
The upper limit temperature and the lower limit temperature can be easily set even in a state where the battery temperature immediately after discharge is rising. Alternatively, if the battery temperature detecting means is the ambient temperature detecting means and the battery temperature detected by the battery temperature detecting means at the time of starting the charging of the storage battery is the ambient temperature as in the invention of claim 8, after discharging, The upper limit temperature and the lower limit temperature can be easily set even for a storage battery that has been left for a long time and the battery temperature has dropped.
【００２０】また、請求項９の発明のように、リフレッ
シュ充電モードにおいては、制御手段が蓄電池を満充電
するまでは充電電流供給手段を制御して第１の充電電流
にて蓄電池を充電し、蓄電池を満充電した後さらに制御
手段が充電電流供給手段を制御して第１の充電電流より
も小さい第２の充電電流及び第２の充電電流よりも小さ
い第３の充電電流を切り換えて蓄電池を過充電するよう
にすれば、蓄電池を満充電するまでは比較的に大きな第
１の充電電流で充電し、満充電後は比較的に小さな第２
及び第３の充電電流にて過充電することで短時間でリフ
レッシュ充電を行なうことができる。In the refresh charging mode, the charging current supplying means is controlled to charge the storage battery with the first charging current until the control means fully charges the storage battery. After the storage battery is fully charged, the control means further controls the charging current supply means to switch the second charging current smaller than the first charging current and the third charging current smaller than the second charging current to switch the storage battery. If it is overcharged, the storage battery is charged with a relatively large first charging current until it is fully charged, and a relatively small second charging current after it is fully charged.
Also, refresh charging can be performed in a short time by overcharging with the third charging current.
【００２１】なお、請求項１０の発明のように、リフレ
ッシュ充電モードにおいて、充電電流値とその充電電流
が供給されていた時間の積を充電量とするとともに充電
量の積算値が所定値に達したら充電電流供給手段による
蓄電池への充電電流の供給を停止させるリフレッシュ充
電完了検出手段を備えれば、ばらつきなく安定したリフ
レッシュ充電を行なうことができる。According to the tenth aspect of the invention, in the refresh charge mode, the product of the charging current value and the time during which the charging current is supplied is used as the charging amount, and the integrated value of the charging amount reaches the predetermined value. Then, if the refresh charge completion detecting means for stopping the supply of the charge current to the storage battery by the charge current supply means is provided, it is possible to perform stable refresh charge without variation.
【００２２】[0022]
【実施例】以下、本発明の一実施例を図面を参照して詳
細に説明する。図２は本実施例における充電装置Ａの外
観を示す一部破断した斜視図である。この充電装置Ａ
は、ニッカド電池やニッケル水素電池、あるいは鉛蓄電
池のような蓄電池をハウジングに納装して成る電池パッ
ク（図示せず）が着脱自在に装着できるように、装着用
の凹部１１が本体１０の上面に設けてある。すなわち、
電池パックの所定の部位がこの凹部１１の内部に挿入装
着されると、本体１０の内部に納装されたプリント基板
１２上に実装された充電装置Ａの回路部に蓄電池ＢＴが
接続され、この回路部により蓄電池ＢＴに充電電流が供
給されるのである。また、プリント基板１２上には後述
する切換スイッチＳＷを構成する押釦スイッチ１３が実
装されており、この押釦スイッチ１３の押釦部１３ａを
押駆動するための操作体１４が本体１０内に収納してあ
り、外部よりこの操作体１４を操作することにより、押
釦スイッチ１３の押釦部１３ａを押駆動して、切換スイ
ッチＳＷをオン・オフすることができる。なお、本実施
例では押釦スイッチ１３として所謂タクトスイッチを用
いているが、これに限定するものでなく、また、押釦ス
イッチ１３以外にもスライドスイッチを用いてもよい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a partially cutaway perspective view showing the external appearance of the charging device A in this embodiment. This charger A
The mounting recess 11 is provided on the upper surface of the main body 10 so that a battery pack (not shown) in which a storage battery such as a nickel-cadmium battery, a nickel-hydrogen battery, or a lead storage battery is housed is detachably mounted. It is provided in. That is,
When a predetermined part of the battery pack is inserted and mounted in the recess 11, the storage battery BT is connected to the circuit part of the charging device A mounted on the printed circuit board 12 housed in the main body 10. The charging current is supplied to the storage battery BT by the circuit unit. A push button switch 13 that constitutes a changeover switch SW described later is mounted on the printed circuit board 12, and an operating body 14 for pushing and driving a push button portion 13a of the push button switch 13 is housed in the main body 10. By operating the operating body 14 from the outside, the push button portion 13a of the push button switch 13 can be pushed and driven, and the changeover switch SW can be turned on / off. Although a so-called tact switch is used as the push button switch 13 in this embodiment, the present invention is not limited to this, and a slide switch other than the push button switch 13 may be used.
【００２３】また、本体１０の上面には、後述する通常
充電モードに設定されていることを表示する通常充電表
示ランプ１５と、リフレッシュ充電モードに設定されて
いることを表示するリフレッシュ充電表示ランプ１６
と、蓄電池ＢＴの温度（電池温度）が所定の温度以上で
あることを表示する電池高温表示ランプ１７とが露設し
てある。Further, on the upper surface of the main body 10, a normal charge display lamp 15 for indicating that the normal charge mode, which will be described later, is set, and a refresh charge display lamp 16 for indicating that the refresh charge mode is set.
And a battery high-temperature display lamp 17 that indicates that the temperature of the storage battery BT (battery temperature) is equal to or higher than a predetermined temperature.
【００２４】図１は本実施例の回路ブロック図であり、
外部の商用交流電源ＡＣに接続された整流回路１と、整
流回路１の出力端に１次側が接続されたトランスＴと、
トランスＴの２次側に接続されるとともに出力端には蓄
電池ＢＴが接続された整流回路２とで充電電流供給手段
が構成されている。また、トランスＴの１次側にはスイ
ッチング素子Ｑが直列に挿入されており、このスイッチ
ング素子Ｑをオン・オフするスイッチ回路３と、トラン
スＴの２次側に誘起される電圧・電流を検出し、スイッ
チング素子Ｑをオン・オフするタイミングを決定する制
御信号をスイッチ回路３に与える制御回路４とで制御手
段が構成されており、さらに、蓄電池ＢＴの電池温度を
検出するための電池温度検出手段たる温度センサ部５の
検出出力が上記制御回路４に入力されている。FIG. 1 is a circuit block diagram of this embodiment.
A rectifier circuit 1 connected to an external commercial AC power supply AC, a transformer T having an output terminal of the rectifier circuit 1 connected to the primary side,
A charging current supply means is constituted by the rectifier circuit 2 which is connected to the secondary side of the transformer T and has the output terminal connected to the storage battery BT. Further, a switching element Q is inserted in series on the primary side of the transformer T, and the switch circuit 3 for turning on / off the switching element Q and the voltage / current induced on the secondary side of the transformer T are detected. However, the control means is constituted by the control circuit 4 which gives the switch circuit 3 a control signal for determining the timing of turning on / off the switching element Q, and further, the battery temperature detection for detecting the battery temperature of the storage battery BT. The detection output of the temperature sensor unit 5 as a means is input to the control circuit 4.
【００２５】この制御回路４は、例えばマイクロコンピ
ュータから成るもので、直流電源Ｖ cc（５Ｖ）が供給さ
れて動作する。また、制御回路４の入力ポートは、抵抗
Ｒ1を介して直流電源Ｖccに接続されるとともに、切換
スイッチＳＷを介して接地されている。すなわち、通常
はこの切換スイッチＳＷがオフであって、制御回路４の
入力ポートには抵抗Ｒ1 を介してＨレベルの信号が入力
されている。そして、切換スイッチＳＷがオンすると入
力ポートが切換スイッチＳＷを介して接地されるために
入力ポートにはＬレベルの信号が入力される。ここで、
制御回路４は入力ポートにＨレベルの信号が入力されて
いる場合には急速充電を行う通常充電モードとなり、入
力ポートにＬレベルの信号が入力されると通常充電モー
ドからリフレッシュ充電モードに切り換えて蓄電池ＢＴ
をリフレッシュ充電するようになっている。The control circuit 4 is, for example, a micro computer.
DC power supply V cc(5V) is supplied
Works. In addition, the input port of the control circuit 4 is a resistor
R1DC power supply viaccConnected to and switched
It is grounded through the switch SW. Ie, usually
Of the control circuit 4 when the changeover switch SW is off.
Resistor R at the input port1H level signal is input via
Has been done. When the changeover switch SW is turned on, the switch is turned on.
Because the power port is grounded via the changeover switch SW
An L level signal is input to the input port. here,
The control circuit 4 receives an H level signal at its input port.
If it is, the normal charging mode for quick charging is
When an L level signal is input to the power port, the normal charging mode is
Switch to refresh charge mode from storage battery BT
Is designed to be recharged.
【００２６】蓄電池ＢＴに供給される充電電流の大きさ
は、制御回路４からスイッチ回路３に制御信号を与えて
スイッチング素子Ｑのオン・オフ周期を可変することで
変化させることができる。なお、制御回路４はトランス
Ｔの２次側電流を検出しており、検出した２次側電流
（充電電流）が所定の電流値となるような制御信号をス
イッチ回路３に与える。The magnitude of the charging current supplied to the storage battery BT can be changed by giving a control signal from the control circuit 4 to the switch circuit 3 to change the ON / OFF cycle of the switching element Q. The control circuit 4 detects the secondary side current of the transformer T and gives a control signal to the switch circuit 3 so that the detected secondary side current (charging current) has a predetermined current value.
【００２７】また、温度センサ部５は蓄電池ＢＴの電池
温度を検出するものであって、検出した電池温度に応じ
た検出信号を制御回路４に与える。なお、この温度セン
サ部５を電池パックのハウジング内に納装するようにし
てもよい。次に本実施例の動作について説明する。ま
ず、通常充電モードにおいては、約９Ａの充電電流にて
蓄電池ＢＴが急速充電されるように制御回路４がスイッ
チ回路３に制御信号を与える。すなわち、極めて大きな
充電電流を蓄電池ＢＴに供給することにより、極短時間
で蓄電池ＢＴを満充電することができる。例えば、公称
容量１６００ｍＡｈの蓄電池ＢＴであれば、通常約９〜
１２分程度で満充電できる。なお、満充電とは、蓄電池
ＢＴの公称容量のほぼ１００％まで充電された状態をい
う。さらに、制御回路４は温度センサ部５にて検出され
た電池温度の時間変化率を算出し、蓄電池ＢＴの充電に
伴って上昇する電池温度の時間変化率がある値を越えた
ときに満充電になったと判断し、蓄電池ＢＴへの充電電
流の供給を停止、あるいはトリクル充電に切り換えてい
る。The temperature sensor unit 5 detects the battery temperature of the storage battery BT, and gives a detection signal according to the detected battery temperature to the control circuit 4. The temperature sensor unit 5 may be housed in the housing of the battery pack. Next, the operation of this embodiment will be described. First, in the normal charge mode, the control circuit 4 gives a control signal to the switch circuit 3 so that the storage battery BT is rapidly charged with a charging current of about 9A. That is, by supplying an extremely large charging current to the storage battery BT, the storage battery BT can be fully charged in an extremely short time. For example, in the case of a storage battery BT having a nominal capacity of 1600 mAh, it is usually about 9 to
It can be fully charged in about 12 minutes. The full charge means a state in which the storage battery BT is charged to almost 100% of the nominal capacity. Further, the control circuit 4 calculates the time change rate of the battery temperature detected by the temperature sensor unit 5, and when the time change rate of the battery temperature that rises with the charging of the storage battery BT exceeds a certain value, it is fully charged. Then, the supply of the charging current to the storage battery BT is stopped or switched to the trickle charging.
【００２８】一方、図３に示すように、リフレッシュ充
電モードにおいては、制御回路４がスイッチ回路３に制
御信号を与えて通常充電モードの充電電流（約９Ａ）よ
り充分小さい第１の充電電流Ｉ1 （例えば約１．７Ａあ
るいは５Ａ）に変化させる。そして、蓄電池ＢＴが満充
電されるまでは上記第１の充電電流Ｉ1 を蓄電池ＢＴに
供給する（同図（ｃ）参照）。このとき、充電が進むに
つれて蓄電池ＢＴの電池電圧及び電池温度も上昇するか
ら（同図（ａ）及び（ｂ）参照）、温度センサ部５によ
り検出される電池温度が所定の上限温度ＴU に達したら
満充電になったと判断し、制御回路４は第１の充電電流
Ｉ1 よりもさらに小さい第３の充電電流Ｉ3 （例えば、
０．１５Ａ）に切り換えて蓄電池ＢＴを過充電する（同
図（ｂ）及び（ｃ）参照）。上記上限温度ＴU は蓄電池
ＢＴがほぼ満充電となった時の電池温度（通常５５℃程
度）に設定してあり、本実施例では、制御回路４と温度
センサ部５によって蓄電池ＢＴの満充電を検出する検出
手段を構成している。On the other hand, as shown in FIG. 3, in the refresh charge mode, the control circuit 4 gives a control signal to the switch circuit 3 so that the first charge current I is sufficiently smaller than the charge current (about 9 A) in the normal charge mode. Change to 1 (for example, about 1.7 A or 5 A). Then, the first charging current I 1 is supplied to the storage battery BT until the storage battery BT is fully charged (see FIG. 7C). At this time, the battery voltage and the battery temperature of the storage battery BT also rise as the charging progresses (see (a) and (b) of the same figure), so that the battery temperature detected by the temperature sensor unit 5 reaches a predetermined upper limit temperature T U. When it reaches, it is judged that the battery is fully charged, and the control circuit 4 determines the third charging current I 3 (eg, the third charging current I 3 that is smaller than the first charging current I 1) .
0.15 A) and the storage battery BT is overcharged (see (b) and (c) in the figure). The upper limit temperature T U is set to the battery temperature when the storage battery BT is almost fully charged (usually about 55 ° C.), and in the present embodiment, the control circuit 4 and the temperature sensor unit 5 fully charge the storage battery BT. It constitutes a detection means for detecting.
【００２９】ところが、充電電流が第１の充電電流Ｉ1
（約１．７Ａ）から第３の充電電流Ｉ3 に切り換われば
電池温度は下降するため（同図（ｂ）参照）、温度セン
サ部５により検出された電池温度が上限温度ＴU よりも
所定の温度（例えば、５℃）だけ低い下限温度ＴL まで
下降すれば、制御回路４は第３の充電電流Ｉ3 をそれよ
りも大きく、且つ第１の充電電流Ｉ1 よりも小さい第２
の充電電流Ｉ2 （例えば、約０．５Ａ）に切り換えて過
充電する（同図（ｃ）参照）。しかし、第３の充電電流
Ｉ3 から第２の充電電流Ｉ2 に切り換えられることで再
び蓄電池ＢＴの電池温度が上昇するから（同図（ｂ）参
照）、温度センサ部５により検出された電池温度が再び
上限温度ＴU を越えれば、制御回路４はもう一度第２の
充電電流Ｉ2 を第３の充電電流Ｉ3 に切り換える（同図
（ｂ）及び（ｃ）参照）。すなわち、制御回路４は、温
度センサ部５により検出する蓄電池ＢＴの電池温度が上
限温度ＴU と下限温度ＴL との間の範囲内に収まるよう
に、第２の充電電流Ｉ2 と第３の充電電流Ｉ3 とを交互
に切り換えており、電池温度が上限温度ＴU と下限温度
ＴL との間を往復する期間を過充電サイクルの１サイク
ルとし、この過充電サイクルにて蓄電池ＢＴを過充電、
つまりリフレッシュ充電するのである。However, the charging current is the first charging current I 1
The battery temperature drops when the charging current I 3 is switched from (about 1.7 A) to the third charging current I 3 (see (b) in the same figure). Therefore, the battery temperature detected by the temperature sensor unit 5 is lower than the upper limit temperature T U. Is lowered by a predetermined temperature (for example, 5 ° C.) to a lower limit temperature T L , the control circuit 4 makes the third charging current I 3 larger than that and smaller than the first charging current I 1 . Two
Charging current I 2 (for example, about 0.5 A) is switched to overcharge (see (c) of the same figure). However, since the battery temperature of the storage battery BT rises again by switching from the third charging current I 3 to the second charging current I 2 (see FIG. 2B), the battery detected by the temperature sensor unit 5 is detected. When the temperature again exceeds the upper limit temperature T U , the control circuit 4 switches the second charging current I 2 to the third charging current I 3 again (see (b) and (c) of the same figure). That is, the control circuit 4 sets the second charging current I 2 and the third charging current I 2 so that the battery temperature of the storage battery BT detected by the temperature sensor unit 5 falls within the range between the upper limit temperature T U and the lower limit temperature T L. The charging current I 3 of the storage battery BT is alternately switched, and the period in which the battery temperature reciprocates between the upper limit temperature T U and the lower limit temperature T L is defined as one cycle of the overcharge cycle, and the storage battery BT is stored in this overcharge cycle. Overcharge,
That is, refresh charging is performed.
【００３０】ここで、制御回路４はトランスＴの２次側
電流、つまり充電電流を検出しており、上記リフレッシ
ュ充電モードにおいて充電電流とその充電電流が供給さ
れている時間の積を充電量として過充電サイクルの充電
量を積算し、この積算充電量が所定の値に達したときに
リフレッシュ充電が完了したと判断して充電電流の供給
を停止させる。すなわち、本実施例においては、制御回
路４によってリフレッシュ充電完了検出手段を構成して
いる。つまり、過充電サイクルにより過充電される時間
をタイマ等で計時し、所定時間の過充電が行なわれたと
きにリフレッシュ充電が完了したものと判断するように
すると、蓄電池ＢＴが充電されているときの周囲の温度
等によって充電量にばらつきが生じてしまうが、本実施
例のように充電量を積算してリフレッシュ充電の完了を
検出するようにすることで、充電量のばらつきを抑制す
ることができる。Here, the control circuit 4 detects the secondary side current of the transformer T, that is, the charging current, and the product of the charging current and the time during which the charging current is supplied in the refresh charging mode is the charging amount. The charge amount of the overcharge cycle is integrated, and when the integrated charge amount reaches a predetermined value, it is determined that the refresh charging is completed, and the supply of the charging current is stopped. That is, in this embodiment, the control circuit 4 constitutes the refresh charge completion detecting means. In other words, when the time overcharged by the overcharge cycle is measured by a timer or the like and it is determined that the refresh charge is completed when the overcharge is performed for a predetermined time, when the storage battery BT is charged. The charge amount varies depending on the ambient temperature of the battery, etc., but the charge amount is suppressed by integrating the charge amount and detecting the completion of the refresh charge as in the present embodiment. it can.
【００３１】なお、蓄電池ＢＴが放電された直後のよう
に非常に高温になっていた場合、具体的には温度センサ
部５により検出された電池温度が所定の温度（６５℃）
以上である場合は、蓄電池ＢＴを保護するために制御回
路４が充電電流の供給を停止し、蓄電池ＢＴの電池温度
が上記所定温度以下に低下するのを待って、通常の急速
充電あるいはリフレッシュ充電を行なう。ここで、蓄電
池ＢＴの電池温度が上記所定温度以上である場合には、
本体１０の上面に露設された電池高温表示ランプ１７を
点灯させて使用者に知らせるようにしている。When the storage battery BT is extremely hot as it is immediately after being discharged, specifically, the battery temperature detected by the temperature sensor unit 5 is a predetermined temperature (65 ° C.).
In the above case, the control circuit 4 stops the supply of the charging current in order to protect the storage battery BT, waits for the battery temperature of the storage battery BT to drop to the predetermined temperature or lower, and then performs normal quick charge or refresh charge. Do. Here, when the battery temperature of the storage battery BT is equal to or higher than the predetermined temperature,
The battery high temperature indicator lamp 17 provided on the upper surface of the main body 10 is turned on to inform the user.
【００３２】具体的な例として、公称容量が１６００ｍ
Ａｈの蓄電池ＢＴを公称容量の３００％（＝４８００ｍ
Ａｈ）まで過充電（リフレッシュ充電）する場合を考え
る。温度センサ部５にて検出した蓄電池ＢＴの電池温度
が所定の温度（５５℃）を越えたときに制御回路４は蓄
電池ＢＴが満充電されたと判断するが、通常はこの時点
で蓄電池ＢＴに供給された充電量は公称容量の１２０％
（＝１９２０ｍＡｈ）程度になっている。したがって、
以降の過充電サイクルにおいては、残りの充電量（＝２
８８０ｍＡｈ）を充電することになる。よって、図３に
示すように、過充電サイクルを繰り返すことで第３の充
電電流Ｉ3 （＝１５０ｍＡ）と第２の充電電流Ｉ2 （＝
５００ｍＡ）とを時間ｔ1 ，ｔ2 ，ｔ3 …だけ交互に流
せば、各充電量は以下の式で表される。As a concrete example, the nominal capacity is 1600 m.
Ah storage battery BT is 300% of the nominal capacity (= 4800m
Consider the case of overcharging (refresh charging) up to Ah). When the battery temperature of the storage battery BT detected by the temperature sensor unit 5 exceeds a predetermined temperature (55 ° C.), the control circuit 4 determines that the storage battery BT is fully charged. Normally, the control circuit 4 supplies the storage battery BT at this point. The charged amount is 120% of the nominal capacity
(= 1920 mAh). Therefore,
In the subsequent overcharge cycle, the remaining charge amount (= 2
880 mAh) will be charged. Therefore, as shown in FIG. 3, by repeating the overcharge cycle, the third charging current I 3 (= 150 mA) and the second charging current I 2 (=
And 500 mA) are alternately flowed for time t 1 , t 2 , t 3, ... Each charge amount is represented by the following equation.
【００３３】 １５０〔ｍＡ〕×ｔ1 〔ｈ〕＝１５０ｔ1 〔ｍＡｈ〕 ５００〔ｍＡ〕×ｔ2 〔ｈ〕＝５００ｔ2 〔ｍＡｈ〕 １５０〔ｍＡ〕×ｔ3 〔ｈ〕＝１５０ｔ3 〔ｍＡｈ〕 したがって、これらの充電量の総和が上記残りの充電量
（＝２８８０ｍＡｈ）に達すれば、制御回路４において
リフレッシュ充電が完了したと判断し、蓄電池ＢＴへの
充電電流の供給が停止されるのである。150 [mA] × t 1 [h] = 150 t 1 [mAh] 500 [mA] × t 2 [h] = 500 t 2 [mAh] 150 [mA] × t 3 [h] = 150 t 3 [mAh] Therefore, when the sum of these charge amounts reaches the remaining charge amount (= 2880 mAh), the control circuit 4 determines that the refresh charge is completed, and the supply of the charge current to the storage battery BT is stopped. .
【００３４】ところで、上記の上限温度ＴU は、図４に
示すように充電装置Ａが置かれた雰囲気中の温度（周囲
温度ＴA ）に所定の温度Ｔ0 を足して設定している。す
なわち、上限温度ＴU ＝周囲温度ＴA ＋所定温度Ｔ0 と
なるから、上限温度ＴU 及び下限温度ＴL を容易に設定
することできる。あるいは、蓄電池ＢＴの仕様に応じて
規定された上限温度を上記上限温度ＴU としてもよく、
その場合には、構成を比較的に簡素化できるとともに上
限温度ＴU と下限温度ＴL とを周囲温度ＴA に影響され
ることなく常時略一定とすることができる。The upper limit temperature T U is set by adding a predetermined temperature T 0 to the temperature (ambient temperature T A ) in the atmosphere in which the charging device A is placed, as shown in FIG. That is, since the upper limit temperature T U = the ambient temperature T A + the predetermined temperature T 0 , the upper limit temperature T U and the lower limit temperature T L can be easily set. Alternatively, the upper limit temperature defined according to the specifications of the storage battery BT may be set as the upper limit temperature T U ,
In that case, the structure can be relatively simplified, and the upper limit temperature T U and the lower limit temperature T L can always be made substantially constant without being influenced by the ambient temperature T A.
【００３５】ここで、リフレッシュ充電モードにおい
て、第１の充電電流Ｉ1 により満充電されるまでの間で
温度センサ部５にて検出される蓄電池ＢＴの電池温度の
最も低い値を上記周囲温度ＴA としている。すなわち、
本実施例においては、温度センサ部５を周囲温度検出手
段としている。したがって、常温（室温）中に長時間放
置された蓄電池ＢＴであれば、図５において実線で示す
ように、充電を開始した直後に検出した電池温度が最も
低くなるため、これを周囲温度ＴA とする。一方、蓄電
池ＢＴが放電直後であった場合には既に電池温度がかな
り高くなっているが、リフレッシュ充電モードにおける
満充電までの第１の充電電流Ｉ1 （約１．７Ａ）程度で
あれば、満充電となるまでに蓄電池ＢＴの電池温度は一
旦周囲温度程度まで下降して再度上昇するため（同図中
の点線参照）、蓄電池ＢＴの電池温度が最も低くなる満
充電の直前の電池温度が周囲温度ＴA となる。Here, in the refresh charge mode, the lowest value of the battery temperature of the storage battery BT detected by the temperature sensor unit 5 until the battery is fully charged by the first charging current I 1 is the ambient temperature T. A. That is,
In the present embodiment, the temperature sensor unit 5 is the ambient temperature detecting means. Therefore, if the long-neglected battery BT during normal temperature (room temperature), as indicated by a solid line in FIG. 5, since the battery temperature detected immediately after starting the charging is lowest, which ambient temperature T A And On the other hand, when the storage battery BT has just been discharged, the battery temperature has already risen considerably, but if it is about the first charging current I 1 (about 1.7 A) until full charge in the refresh charging mode, By the time the battery is fully charged, the battery temperature of the storage battery BT once drops to about ambient temperature and then rises again (see the dotted line in the figure). The ambient temperature becomes T A.
【００３６】なお、周囲温度ＴA を検出するために別途
温度センサ等の周囲温度検出手段を設けてもよいが、本
実施例のように電池温度検出手段たる温度センサ部５に
て周囲温度検出手段を兼用するようにすれば構成を簡素
化できるという利点がある。上記構成によれば、蓄電池
ＢＴをリフレッシュ充電する場合に、満充電までは急速
充電時の充電電流よりも充分に小さく且つ比較的に大き
な第１の充電電流Ｉ 1 にて充電し、それ以降は第１の充
電電流Ｉ1 よりも充分に小さい第２及び第３の大小２通
りの充電電流を交互に切り換える過充電サイクルで蓄電
池ＢＴを過充電してリフレッシュ充電するようにしたか
ら、蓄電池ＢＴの電池温度が必要以上に上昇しないため
に蓄電池ＢＴに過度の負担をかけず、且つ比較的に短時
間でリフレッシュ充電することができる。さらに、本実
施例においては、温度センサ部５にて検出した蓄電池Ｂ
Ｔの電池温度が所定の上限温度ＴU と下限温度ＴL との
間の範囲内に収まるようにしているから、リフレッシュ
充電の際に蓄電池ＢＴの電池温度が上記上限温度ＴU よ
り高くなることがなく、蓄電池ＢＴの温度上昇をより抑
制することができる。また、完全放電後に満充電すると
いうリフレッシュ充電を行なう場合に比較して、蓄電池
ＢＴの残容量を放電させる手段を必要としないために形
状及びコストの点で有利となる。しかも、本実施例で
は、切換スイッチＳＷによって使用者が任意に通常充電
モードとリフレッシュ充電モードとを切り換えることが
でき、蓄電池ＢＴにメモリ効果が生じたり不活性となっ
たときに使用者が意図してリフレッシュ充電を行なうこ
とができ、不必要なときにリフレッシュ充電を行なうこ
とがなく効率的な充電が行なえて使い勝手が向上すると
いう利点もある。The ambient temperature TASeparately to detect
An ambient temperature detecting means such as a temperature sensor may be provided.
As in the embodiment, the temperature sensor unit 5 serving as the battery temperature detecting means
If the ambient temperature detection means is also used as the
There is an advantage that it can be realized. According to the above configuration, the storage battery
When the BT is refresh-charged, it takes a long time to reach full charge.
Sufficiently smaller and relatively larger than the charging current during charging
First charging current I 1The battery is charged at the
Current I12nd and 3rd large and small, which are much smaller than
Storage in an overcharging cycle that alternates between different charging currents
Did you overcharge and refresh charge the pond BT?
Since the battery temperature of the storage battery BT does not rise more than necessary
The storage battery BT is not overly burdened and is relatively short
Can be refresh charged between. Furthermore, the real
In the embodiment, the storage battery B detected by the temperature sensor unit 5
The battery temperature of T is a predetermined upper limit temperature TUAnd lower limit temperature TLWith
I'm trying to fit within the range, so refresh
At the time of charging, the battery temperature of the storage battery BT is the upper limit temperature TUYo
The temperature rise of the storage battery BT is further suppressed.
Can be controlled. Also, when fully charged after complete discharge
Compared to the case of performing refresh charging, the storage battery
Shaped because it does not require a means to discharge the remaining capacity of BT
It is advantageous in terms of shape and cost. Moreover, in this embodiment
Is a user's voluntary normal charge by the changeover switch SW
Mode and refresh charge mode can be switched
The storage battery BT has a memory effect or becomes inactive.
The user intentionally performs refresh charging when
And refresh charging when not needed.
If you can charge the battery efficiently and improve the usability
There is also an advantage.
【００３７】なお、本実施例における各充電電流の値は
ひとつの例であってこれに限定されるものではなく、例
えば過充電サイクルにおいて第３の充電電流Ｉ3 を０Ａ
とし、間欠的に過充電を行なうようにしてもよい。ま
た、過充電サイクルにおける充電電流は２通りに限定す
る必要はなく、３通り以上の充電電流を所定の順序で切
り換えるようにしてもよい。The value of each charging current in this embodiment is an example and is not limited to this. For example, in the overcharging cycle, the third charging current I 3 is set to 0A.
Alternatively, the overcharge may be performed intermittently. Further, the charging current in the overcharging cycle does not have to be limited to two, and three or more charging currents may be switched in a predetermined order.
【００３８】ところで、本実施例では温度センサ部５に
より検出した蓄電池ＢＴの電池温度に基づいてリフレッ
シュ充電モードにおける過充電サイクルを決めている
が、例えば、マイコンから成る制御回路４が具備するタ
イマ等を用い、所定の時間間隔で第２及び第３の充電電
流を交互に切り換えるようにしてもよい。すなわち、タ
イマによる限時時間を過充電サイクルの１サイクルとな
るようにすれば、温度センサ部５が不要となり、構成を
簡素化することができる。By the way, in the present embodiment, the overcharge cycle in the refresh charge mode is determined based on the battery temperature of the storage battery BT detected by the temperature sensor unit 5. For example, a timer or the like included in the control circuit 4 including a microcomputer is provided. May be used to alternately switch the second and third charging currents at predetermined time intervals. That is, if the time limit time by the timer is set to one cycle of the overcharge cycle, the temperature sensor unit 5 is not necessary, and the configuration can be simplified.
【００３９】[0039]
【発明の効果】請求項１の発明は、容量の低下した蓄電
池を過充電することで蓄電池の容量を回復させるリフレ
ッシュ充電を少なくとも行なう充電装置であって、蓄電
池に充電電流を供給する充電電流供給手段と、この充電
電流供給手段を制御して充電電流の大きさを変化させる
制御手段と、蓄電池が満充電されたことを検出する検出
手段とを備え、この検出手段により満充電が検出された
後、制御手段が充電電流供給手段を制御して少なくとも
大小２通りの電流値の充電電流を所定の順序で切り換え
る過充電サイクルにてリフレッシュ充電を行なうように
したから、蓄電池を過充電するリフレッシュ充電を行な
う際の蓄電池の温度上昇を抑えることができ、蓄電池に
負担をかけずに比較的に短時間でリフレッシュ充電を行
なうことができるという効果がある。According to the first aspect of the present invention, there is provided a charging device for performing at least refresh charging for recovering the capacity of a storage battery by overcharging the storage battery having a reduced capacity, and supplying a charging current to the storage battery. Means, a control means for controlling the charging current supply means to change the magnitude of the charging current, and a detection means for detecting that the storage battery is fully charged, and the detection means detects the full charge. After that, the control means controls the charging current supply means to perform the refresh charging in the overcharge cycle in which the charging currents of at least two large and small current values are switched in a predetermined order, so that the rechargeable battery is overcharged. It is possible to suppress the temperature rise of the storage battery at the time of performing, and it is possible to perform refresh charging in a relatively short time without burdening the storage battery. There is an effect that.
【００４０】請求項２の発明は、蓄電池の温度を検出す
る電池温度検出手段を設け、この電池温度検出手段で検
出された電池温度が所定の上限温度から下限温度までの
範囲内を往復する期間が過充電サイクルの１サイクルと
なるように制御手段が充電電流供給手段を制御するの
で、リフレッシュ充電の際に蓄電池の電池温度が上記上
限温度より高くなることがなく、蓄電池の温度上昇をよ
り抑制することができ、蓄電池の寿命劣化を防止するこ
とができるという効果がある。According to a second aspect of the present invention, a battery temperature detecting means for detecting the temperature of the storage battery is provided, and the battery temperature detected by the battery temperature detecting means reciprocates within a range from a predetermined upper limit temperature to a lower limit temperature. Since the control means controls the charging current supply means so that it becomes one cycle of the overcharge cycle, the battery temperature of the storage battery does not become higher than the above upper limit temperature at the time of refresh charging, and the temperature rise of the storage battery is further suppressed. Therefore, there is an effect that it is possible to prevent deterioration of the life of the storage battery.
【００４１】請求項３の発明は、限時手段を具備し、限
時手段による所定の限時時間が過充電サイクルの１サイ
クルとなるように制御手段が充電電流供給手段を制御す
るので、簡単な構成により蓄電池の温度上昇を抑えるこ
とができるという効果がある。請求項４の発明は、制御
手段が充電電流供給手段を制御して蓄電池を満充電する
通常充電モードと、制御手段が充電電流供給手段を制御
して少なくとも大小２通りの電流値の充電電流を所定の
順序で切り換える過充電サイクルにてリフレッシュ充電
を行なうリフレッシュ充電モードとを切り換える切換手
段を備えたので、使用者が切換手段によって任意にリフ
レッシュ充電を行なうことができ、さらに必要に応じて
通常充電モードとリフレッシュ充電モードとを使い分け
ることができ、使い勝手の向上と蓄電池の充電の効率化
とを図ることができるという効果がある。According to the invention of claim 3, the time controlling means is provided, and the control means controls the charging current supplying means so that the predetermined time period of the time controlling means is one cycle of the overcharge cycle. There is an effect that the temperature rise of the storage battery can be suppressed. According to a fourth aspect of the invention, the control means controls the charging current supply means to fully charge the storage battery, and the control means controls the charging current supply means to supply at least two large and small current values. Since the switching means for switching between the refresh charging mode in which the refresh charging is performed in the overcharging cycle in which the switching is performed in the predetermined order is switched, the user can arbitrarily perform the refresh charging by the switching means, and the normal charging can be performed if necessary. The mode and the refresh charge mode can be selectively used, and there is an effect that the usability can be improved and the charging efficiency of the storage battery can be improved.
【００４２】請求項５の発明は、周囲の温度を検出する
周囲温度検出手段を具備し、この周囲温度検出手段によ
り検出した周囲温度に所定温度を足して上限温度とし、
この上限温度からある一定温度だけ低い温度を下限温度
としたので、上限温度と下限温度とを容易に設定するこ
とができるという効果がある。請求項６の発明は、充電
しようとする蓄電池の仕様により規定される最大の温度
を上限温度とするとともに、この上限温度からある一定
温度だけ低い温度を下限温度としたので、構成を比較的
に簡素化できるとともに上限温度と下限温度とを周囲の
温度に影響されることなく常時略一定とすることができ
るという効果がある。The invention of claim 5 comprises an ambient temperature detecting means for detecting the ambient temperature, and the ambient temperature detected by the ambient temperature detecting means is added with a predetermined temperature to obtain an upper limit temperature,
Since a temperature lower than the upper limit temperature by a certain temperature is set as the lower limit temperature, there is an effect that the upper limit temperature and the lower limit temperature can be easily set. According to the invention of claim 6, the maximum temperature defined by the specifications of the storage battery to be charged is set as the upper limit temperature, and the temperature lower than the upper limit temperature by a certain temperature is set as the lower limit temperature. There is an effect that it can be simplified and that the upper limit temperature and the lower limit temperature can be kept substantially constant without being affected by the ambient temperature.
【００４３】請求項７の発明は、電池温度検出手段を周
囲温度検出手段とし、蓄電池が満充電されるまでの期間
において電池温度検出手段により検出された電池温度の
うち最低の電池温度を周囲温度としたので、放電直後の
電池温度が上昇している状態においても、上限温度と下
限温度とを容易に設定することができるという効果があ
る。According to the invention of claim 7, the battery temperature detecting means is the ambient temperature detecting means, and the lowest battery temperature among the battery temperatures detected by the battery temperature detecting means in the period until the storage battery is fully charged is the ambient temperature. Therefore, there is an effect that the upper limit temperature and the lower limit temperature can be easily set even in a state where the battery temperature immediately after discharge is rising.
【００４４】請求項８の発明は、電池温度検出手段を周
囲温度検出手段とし、蓄電池への充電を開始した時点で
電池温度検出手段により検出された電池温度を周囲温度
とすれば、放電後に長時間放置されて電池温度の低下し
た蓄電池に対しても上限温度と下限温度とを容易に設定
することができるという効果がある。請求項９の発明
は、リフレッシュ充電モードにおいては、制御手段が蓄
電池を満充電するまでは充電電流供給手段を制御して第
１の充電電流にて蓄電池を充電し、蓄電池を満充電した
後さらに制御手段が充電電流供給手段を制御して第１の
充電電流よりも小さい第２の充電電流及び第２の充電電
流よりも小さい第３の充電電流を切り換えて蓄電池を過
充電するので、蓄電池を満充電するまでは比較的に大き
な第１の充電電流で充電し、満充電後は比較的に小さな
第２及び第３の充電電流にて過充電することで短時間で
リフレッシュ充電を行なうことができるという効果があ
る。According to the eighth aspect of the present invention, if the battery temperature detecting means is the ambient temperature detecting means and the battery temperature detected by the battery temperature detecting means at the time of starting the charging of the storage battery is the ambient temperature, the battery temperature is long after the discharge. There is an effect that the upper limit temperature and the lower limit temperature can be easily set even for a storage battery in which the battery temperature is lowered by being left for a time. According to the invention of claim 9, in the refresh charge mode, the charging current supply means is controlled to charge the storage battery with the first charging current until the control means fully charges the storage battery. The control means controls the charging current supply means to switch the second charging current smaller than the first charging current and the third charging current smaller than the second charging current to overcharge the storage battery. Refresh charging can be performed in a short time by charging with a relatively large first charging current until full charging and overcharging with a relatively small second and third charging current after full charging. The effect is that you can do it.
【００４５】請求項１０の発明は、リフレッシュ充電モ
ードにおいて、充電電流値とその充電電流が供給されて
いた時間の積を充電量とするとともに充電量の積算値が
所定値に達したら充電電流供給手段による蓄電池への充
電電流の供給を停止させるリフレッシュ充電完了検出手
段を備えれば、ばらつきなく安定したリフレッシュ充電
を行なうことができるという効果がある。In the tenth aspect of the invention, in the refresh charge mode, the product of the charging current value and the time during which the charging current is supplied is set as the charging amount, and the charging current is supplied when the integrated value of the charging amount reaches a predetermined value. If the refresh charging completion detecting means for stopping the supply of the charging current to the storage battery by the means is provided, there is an effect that the refresh charging can be stably performed without variation.
【図１】実施例を示す回路ブロック図である。FIG. 1 is a circuit block diagram showing an embodiment.
【図２】同上を示す一部破断した外観斜視図である。FIG. 2 is a partially cutaway external perspective view showing the same as above.
【図３】同上の動作を説明するための図である。FIG. 3 is a diagram for explaining the operation of the above.
【図４】同上の動作を説明するための図である。FIG. 4 is a diagram for explaining the operation of the above.
【図５】同上の動作を説明するための図である。FIG. 5 is a diagram for explaining the operation of the above.
１ 整流回路 ２ 整流回路 ３ スイッチ回路 ４ 制御回路 ５ 温度センサ部 Ａ 充電装置 ＡＣ 商用交流電源 ＢＴ 蓄電池 Ｑ スイッチング素子 Ｔ トランス ＳＷ 切換スイッチ 1 Rectifier circuit 2 Rectifier circuit 3 Switch circuit 4 Control circuit 5 Temperature sensor part A Charging device AC Commercial AC power supply BT Storage battery Q Switching element T Transformer SW switch
Claims (10)
で蓄電池の容量を回復させるリフレッシュ充電を少なく
とも行なう充電装置であって、蓄電池に充電電流を供給
する充電電流供給手段と、この充電電流供給手段を制御
して充電電流の大きさを変化させる制御手段と、蓄電池
が満充電されたことを検出する検出手段とを備え、この
検出手段により満充電が検出された後、制御手段が充電
電流供給手段を制御して少なくとも大小２通りの電流値
の充電電流を所定の順序で切り換える過充電サイクルに
てリフレッシュ充電を行なうことを特徴とする充電装
置。1. A charging device for performing at least refresh charging for recovering the capacity of a storage battery by overcharging a storage battery having a reduced capacity, comprising charging current supply means for supplying a charging current to the storage battery, and this charging current supply. The control means controls the means to change the magnitude of the charging current, and the detection means for detecting that the storage battery is fully charged.After the detection means detects the full charge, the control means controls the charging current. A charging device characterized in that refresh charging is performed in an overcharging cycle in which a charging means having at least two large and small current values is switched in a predetermined order by controlling a supply means.
段を設け、この電池温度検出手段で検出された電池温度
が所定の上限温度から下限温度までの範囲内を往復する
期間が過充電サイクルの１サイクルとなるように制御手
段が充電電流供給手段を制御して成ることを特徴とする
請求項１記載の充電装置。2. A battery temperature detecting means for detecting the temperature of the storage battery is provided, and a period in which the battery temperature detected by the battery temperature detecting means reciprocates within a range from a predetermined upper limit temperature to a lower limit temperature is an overcharge cycle. The charging device according to claim 1, wherein the control means controls the charging current supply means so that one cycle is performed.
の限時時間が過充電サイクルの１サイクルとなるように
制御手段が充電電流供給手段を制御して成ることを特徴
とする請求項１記載の充電装置。3. The charging device according to claim 1, further comprising a time delaying means, wherein the control means controls the charging current supplying means such that a predetermined time limit by the time delaying means is one cycle of the overcharge cycle. Charging device.
蓄電池を満充電する通常充電モードと、制御手段が充電
電流供給手段を制御して少なくとも大小２通りの電流値
の充電電流を所定の順序で切り換える過充電サイクルに
てリフレッシュ充電を行なうリフレッシュ充電モードと
を切り換える切換手段を備えたことを特徴とする請求項
１乃至請求項３記載の充電装置。4. The normal charging mode in which the control means controls the charging current supply means to fully charge the storage battery, and the control means controls the charging current supply means to set a predetermined charging current having at least two large and small current values. 4. The charging device according to claim 1, further comprising switching means for switching between a refresh charging mode in which refresh charging is performed in an overcharge cycle that is switched in order.
を具備し、この周囲温度検出手段により検出した周囲温
度に所定温度を足して上限温度とし、この上限温度から
ある一定温度だけ低い温度を下限温度としたことを特徴
とする請求項２記載の充電装置。5. An ambient temperature detecting means for detecting an ambient temperature is provided, and a predetermined temperature is added to the ambient temperature detected by the ambient temperature detecting means to obtain an upper limit temperature. A temperature lower than the upper limit temperature by a certain constant temperature is set. The charging device according to claim 2, wherein the lower limit temperature is set.
定される最大の温度を上限温度とするとともに、この上
限温度からある一定温度だけ低い温度を下限温度とした
ことを特徴とする請求項２記載の充電装置。6. The maximum temperature defined by the specifications of the storage battery to be charged is set as an upper limit temperature, and a temperature lower than the upper limit temperature by a certain temperature is set as a lower limit temperature. Charging device.
し、蓄電池が満充電されるまでの期間において電池温度
検出手段により検出された電池温度のうち最低の電池温
度を周囲温度としたことを特徴とする請求項５記載の充
電装置。7. The battery temperature detecting means is ambient temperature detecting means, and the lowest battery temperature among the battery temperatures detected by the battery temperature detecting means during the period until the storage battery is fully charged is set as the ambient temperature. The charging device according to claim 5.
し、蓄電池への充電を開始した時点で電池温度検出手段
により検出された電池温度を周囲温度としたことを特徴
とする請求項５記載の充電装置。8. The battery temperature detecting means is ambient temperature detecting means, and the battery temperature detected by the battery temperature detecting means at the time of starting charging of the storage battery is the ambient temperature. Charging device.
御手段が蓄電池を満充電するまでは充電電流供給手段を
制御して第１の充電電流にて蓄電池を充電し、蓄電池を
満充電した後さらに制御手段が充電電流供給手段を制御
して第１の充電電流よりも小さい第２の充電電流及び第
２の充電電流よりも小さい第３の充電電流を切り換えて
蓄電池を過充電することを特徴とする請求項２記載の充
電装置。9. In the refresh charge mode, the control means controls the charging current supply means to charge the storage battery with the first charging current until the storage means is fully charged, and the control means is further provided after the storage battery is fully charged. Controls the charging current supply means to switch the second charging current smaller than the first charging current and the third charging current smaller than the second charging current to overcharge the storage battery. Item 2. The charging device according to item 2.
電電流値とその充電電流が供給されていた時間の積を充
電量とするとともに充電量の積算値が所定値に達したら
充電電流供給手段による蓄電池への充電電流の供給を停
止させるリフレッシュ充電完了検出手段を備えたことを
特徴とする請求項１乃至請求項９記載の充電装置。10. In the refresh charging mode, the product of the charging current value and the time during which the charging current is being supplied is used as the charging amount, and when the integrated value of the charging amount reaches a predetermined value, the charging current is supplied to the storage battery. 10. The charging device according to claim 1, further comprising refresh charge completion detecting means for stopping the supply of the charging current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00223095A JP3496312B2 (en) | 1995-01-10 | 1995-01-10 | Charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00223095A JP3496312B2 (en) | 1995-01-10 | 1995-01-10 | Charging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08191546A true JPH08191546A (en) | 1996-07-23 |
| JP3496312B2 JP3496312B2 (en) | 2004-02-09 |
Family
ID=11523560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00223095A Expired - Lifetime JP3496312B2 (en) | 1995-01-10 | 1995-01-10 | Charging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3496312B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007007900A1 (en) * | 2005-07-12 | 2007-01-18 | Toyota Jidosha Kabushiki Kaisha | Secondary battery control device and control method |
| JP2014017950A (en) * | 2012-07-06 | 2014-01-30 | Gs Yuasa Corp | Quick charging facility |
| JP2014117081A (en) * | 2012-12-10 | 2014-06-26 | Icom Inc | Charge control device and charge control method |
-
1995
- 1995-01-10 JP JP00223095A patent/JP3496312B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007007900A1 (en) * | 2005-07-12 | 2007-01-18 | Toyota Jidosha Kabushiki Kaisha | Secondary battery control device and control method |
| JP2007026700A (en) * | 2005-07-12 | 2007-02-01 | Toyota Motor Corp | Control device of secondary battery |
| US7629755B2 (en) | 2005-07-12 | 2009-12-08 | Toyota Jidosha Kabushiki Kaisha | Secondary battery control apparatus and secondary battery control method |
| JP2014017950A (en) * | 2012-07-06 | 2014-01-30 | Gs Yuasa Corp | Quick charging facility |
| JP2014117081A (en) * | 2012-12-10 | 2014-06-26 | Icom Inc | Charge control device and charge control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3496312B2 (en) | 2004-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5479084A (en) | Battery discharging apparatus | |
| US6294894B1 (en) | Rechargeable battery arrangement | |
| JPH09130982A (en) | Dual-purpose battery charger and control method therefor | |
| US6246890B1 (en) | Portable telephone with built-in charger | |
| EP0580351B1 (en) | Battery charging apparatus | |
| JP2004364387A (en) | Charging method of secondary battery, charger, and charge control program thereof | |
| JPH08138749A (en) | Battery control method | |
| WO2004095611A1 (en) | Combination battery and battery pack using combination battery | |
| JPH10304589A (en) | Complementary charging of battery by charging battery with pulse current and keeping it in full-charged state | |
| JP3306188B2 (en) | Rechargeable battery charging method | |
| JPH11341694A (en) | Charging method of secondary battery | |
| JP2836677B2 (en) | Rechargeable battery charger with charging completion time display | |
| JP2001051029A (en) | Charging battery or charging battery pack | |
| JP2001051030A (en) | Charging battery or changing battery pack | |
| JP2001056362A (en) | Charge battery or pack thereof | |
| JP3496312B2 (en) | Charging device | |
| JPH11187585A (en) | Charger and charging method for lithium ion secondary battery | |
| JPH09271145A (en) | Charger and charging method | |
| JPH07123604A (en) | Charger for secondary battery | |
| JP2002050408A (en) | Charged cell, charged cell pack, calculation method of residual capacity of charged cell | |
| JPH0779534A (en) | Charger and method for detecting completion of charging | |
| JP2001051031A (en) | Charging battery or charging battery pack | |
| JP2003143770A (en) | Charge control method of secondary battery and electrical apparatus employing the same | |
| JPH06105477A (en) | Charging circuit | |
| JP4013289B2 (en) | Non-aqueous secondary battery charging method and charging device therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20031028 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081128 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081128 Year of fee payment: 5 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091128 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091128 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101128 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111128 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121128 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121128 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131128 Year of fee payment: 10 |
|
| EXPY | Cancellation because of completion of term |