JP2004248369A - Power supply system for portable equipment - Google Patents

Power supply system for portable equipment Download PDF

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Publication number
JP2004248369A
JP2004248369A JP2003033464A JP2003033464A JP2004248369A JP 2004248369 A JP2004248369 A JP 2004248369A JP 2003033464 A JP2003033464 A JP 2003033464A JP 2003033464 A JP2003033464 A JP 2003033464A JP 2004248369 A JP2004248369 A JP 2004248369A
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Japan
Prior art keywords
battery pack
power supply
main power
portable device
driving
Prior art date
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JP2003033464A
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Japanese (ja)
Inventor
Toshio Nozawa
敏雄 野沢
Akihiro Iida
昭廣 飯田
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Individual
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Individual
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    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply system for a portable equipment where a dead battery pack is replaced with another battery pack, without interrupting operation, while a portable equipment 1 is driven, and the lid of the battery case being used for driving is locked to prevent unintended interruption of driving, thus a dead battery pack can be replaced, as required, during driving. <P>SOLUTION: With a battery pack A4 and a battery pack B10 being used as driving power, a load resistor 15 is applied with a current from a load-opening/closing circuit A8 and a load-opening/closing circuit B14, alternately, when power is applied. The voltage of the battery pack A4 at that time is compared with that of the battery pack B10, to operate a main power supply-opening/closing circuit A7 or a main power supply-opening/closing circuit B13, providing the driving power for the portable equipment 1. The battery packs are switched, by overlapping the main power supply opening/closing circuit A7 on the main power supply opening/closing circuit B13 for a very short period. Locking or unlocking of a battery case safety mechanism, is performed electrically and mechanically, interlocked with the switching timing of the battery packs. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明が属する技術分野】
本発明は、携帯型のビデオカメラ等に２次電池パックから電力を供給する携帯機器用電力供給システムである。
【０００２】
【従来の技術】
携帯機器の電力供給は、２次電池パックの容量を大きくするか、当該機器を省電力化する事で、駆動時間を延ばす方法で対応している。ところが、いずれの方法でも、必ず電力容量の低下により駆動が不可能になってしまい、期待した結果が得られないことがあった。そのような事態を避けるために、早めに２次電池パックを交換し、それらの有している能力を最大限発揮させることができなかった。また、２次電池パックを交換する際には、当該機器の駆動を止めざるを得なかった。
【０００３】
【発明が解決しようとする課題】
駆動中の携帯機器の２次電池パックが電池切れをおこしても、当該機器の駆動に影響を与えず２次電池パック交換ができ、さらに、駆動中に電池切れをおこした２次電池パックが安全に交換できる携帯機器用電力供給システムを提供することである。
【０００４】
【課題を解決するための手段】
本発明は、携帯機器の電力供給部に、２系統以上の２次電池パックを有し、いずれかの２次電池パックから携帯機器に電力供給し、駆動中に当該機器駆動電圧が、あらかじめ設定された駆動限界電圧まで低下した瞬間に、２系統の２次電池パックのＯＮ時間を、半導体スィッチング素子等により微小時間オーバーラップさせながら切替える機能と、半導体スィッチング素子等により当該機器の、電力系統から切り離された２次電池パックを携帯機器の駆動中に随時に交換可能な機能と、電池パック収納ケース安全機構のロック、アンロックを、２次電池パックの切替えタイミングに連動する機能とを有することを特徴とする。
【０００５】
【発明の実施の形態】
携帯機器の駆動中に、２系統以上の電池パックから駆動電力を供給するための、２系統以上の主電源開閉回路と、電源投入時や駆動中に於ける電池パック交換後の電池パックの残容量を正確に測定する為に負荷抵抗に電流を流す為の、２系統以上の負荷開閉回路と、電池パック切替え処理と連動して電池パック収納ケース安全機構のロック、アンロックを、電源切替制御部で制御することで実現した。
【０００６】
【実施例】
図１は、本発明装置の２系統の電池パックを有する電源切替回路のブロック図であり、携帯機器１の駆動電力は電池パックＡ４または電池パックＢ１０のいずれかから供給する。図２と図３は初期状態に於いて、電池パックＡ４の容量が電池パックＢ１０よりも少ないか等しい場合のタイミングチャートである。図４は各開閉回路の実際例である。
【０００７】
携帯機器１の駆動は、電池パックＡ４の＋側２５及び電池パックＢの＋側２６からダイオード６、またはダイオード１２を経由して主電源開閉器２４のＯＮにより電源切替制御部２３が動作を開始する。電源切替制御部２３は１チップＣＰＵ等で構成されるか、あるいは携帯機器１の電源回路の一部として構成されてもよく、電源切替回路電流３４は携帯機器１の駆動電流に比して、微弱であり、携帯機器１の電力系に与える影響は極めて少ない。
【０００８】
電源切替制御部２３が動作を開始すると、電池パックＡ収納ケース安全機構５と電池パックＢ収納ケース安全機構１１は図２の（ｊ），（ｋ）に示すように電池扉制御部１７からの信号３２、３３によりロックされる
【０００９】
図２の（ｅ）に示すｔ１の時間内で、負荷開閉回路Ａ８の制御信号３０と負荷開閉回路Ｂ１４の制御信号３１を図２の（ｇ）のｔ２、（ｈ）のｔ３のように微小時間、交互にＯＮし電池パックＡ４と電池パックＢ１０から負荷抵抗１５に電流を流し、電池パックの内部抵抗による誤差の影響を避け、電圧検出部１９で電池パックＡ４の端子電圧２５と電池パックＢ１０の端子電圧２６を検出し、図２の（ｂ）、（ｃ）に示される電源切替電圧以上である事を確認する。この時、電池パックＡ４の端子電圧２５、または電池パックＢ１０の端子電圧２６が図２の（ｂ）、（ｃ）に示される電源切替電圧に達していない時は、当該電池パックケースの安全機構のロックは解除され、駆動電力の対象から排除される。
【００１０】
携帯機器１の駆動中には電源切替制御部２３は、常時、電池パックＡ４の端子電圧２５と電池パックＢ１０の端子電圧２６と主回路駆動電圧２７を電圧検出部１９で検出し、比較データ２１に有する電池パックの電源切替電圧と駆動電圧の駆動限界電圧を電圧比較部２０で比較し、電池パックの切替タイミングの制御を行い、かつ、電池パックが交換されたかどうかも調べる。
【００１１】
初期状態に於いて、電池パックＡ４の容量が電池パックＢ１０よりも少ない、または等しい時は、電池パックＡ４を開閉制御部１６から主電源開閉信号２８を制御し、主電源開閉回路７をＯＮ状態とし携帯機器１に電池パックＡ４より電力を供給する。
【００１２】
主回路駆動電圧２７を検出中に図３の（ｄ）に示すように駆動限界電圧に達したら、図３の（ｆ）に示すように主電源開閉回路Ｂ１３をＯＮ状態にし、次に図３の（ｅ）に示すように主電源開閉回路Ａ７をＯＦＦにする。その間、微小な時間、両主電源開閉回路のＯＮ時間があり、携帯機器１の駆動電力は継続される。この時、電池パックケース３の安全機構のロック５は解除され、駆動電力の対象から排除される。
【００１３】
駆動中の電池パックＡ４の交換は、図３の（ｂ）の電池パック交換のように、電池パックＡ４の端子電圧２５が一旦０Ｖになり、さらに電池パックの端子電圧２５が０Ｖ以外になったことで知る。電池パックＡ４の端子電圧２５が安定したら、図３の（ｇ）のように負荷開閉回路Ａ８を微小時間ＯＮにして負荷抵抗１５に電流を流し、電池パックＡ４の端子電圧２５を電圧検出部１９で知る。
【００１４】
初期状態に於いて、電池パックＢ１０の容量が電池パックＡ４よりも少ない時は、電池パックＢ１０を開閉制御部１６から主電源開閉信号２９を制御し、主電源開閉回路Ｂ１３をＯＮ状態とし携帯機器１に電池パックＢ１０より電力を供給する。
【００１５】
主回路駆動電圧２７を検出中に駆動限界電圧に達したら、主電源開閉回路Ａ７をＯＮ状態にし、次に主電源開閉回路Ｂ１３をＯＦＦにする。その間、微小な時間、両主電源開閉回路のＯＮ時間があり、携帯機器１の駆動電力は継続される。この時、電池パックケース９の安全機構のロック１１は解除され、駆動電力の対象から排除される。
【００１６】
駆動中の電池パックＢ１０の交換は、電池パックＢ１０の端子電圧２６が一旦０Ｖになり、さらに電池パックＢ１０の端子電圧２６が０Ｖ以外になったことで知る。電池パックＢ１０の端子電圧２６が安定したら微小時間、負荷開閉回路Ｂ１４をＯＮにして負荷抵抗１５に電流を流し、電池パックＢ１０の端子電圧２６を電圧検出部１９で知る。
【００１７】
電力容量の少ない電池パックを先に駆動電力とするのは、当該電池パックが駆動中に図３の（ｄ）に示す駆動限界電圧に達し、電池パック切替処理を行った後、電池パックを交換する時間を十分に確保するためである。
【００１８】
電池パックＡ４または電池パックＢ１０の残容量はデータ格納部１８から取り出し、携帯機器１の表示部２に表示することができ、かつ、交換が必要な電池パックについても警報を表示する事ができる。またＬＥＤ等で使用者に警報を与えることもできる。
【００１９】
主電源開閉回路は図４の（ａ）のようにＰチャンネルのＭＯＳＦＥＴ２個で構成されるが、他の半導体スイッチング素子でもよい。半導体スイッチング素子による電圧低下が懸念される場合は図４の（ｂ）のようにリレーを使用してもよい。負荷開閉回路は図４の（ｃ）のようにＰチャンネルのＭＯＳＦＥＴで構成されるが、他の半導体スイッチング素子でもよい。主電源開閉器２４は他の半導体スイッチング素子でもよい。
【００２０】
負荷抵抗１５の抵抗値は電池パックの種類により、電池パックの内部抵抗の影響を排除して、電池パックの残量が計測できる値を決定する。
【００２１】
電池パックを切替える時の主電源開閉回路Ａ７と主電源開閉回路Ｂ１３とのＯＮ状態がオーバーラップする時間は、携帯機器１への影響と電池パックＡ４と電池パックＢ１０への影響を考慮して決定する。
【００２２】
電池パックが電池ケースから交換されたかどうかの検出は、例えば、電池ケースの蓋に連動したスイッチ等で行ってもよい。
【００２３】
【発明の効果】
携帯機器を電池切れの心配なく使用することができ、駆動中にも機器に影響を与えず，安全に電池パックを交換でき、かつ、電池パックの有している最大能力を生かしきることができ、無駄が発生しない。
【図面の簡単な説明】
【図１】携帯機器用電源切替回路のブロック図である。
【図２】携帯機器用電源切替回路の電源投入時の動作タイミングチャートである。
（ａ）は主電源の状態を示す図である。
（ｂ）は電池パックＡの端子電圧（Ｖ１）を示す図である。
（ｃ）は電池パックＢの端子電圧（Ｖ２）を示す図である。
（ｄ）は携帯機器への供給電圧（ＶＬ）を示す図である。
（ｅ）は主電源開閉回路Ａの状態を示す図である。
（ｆ）は主電源開閉回路Ｂの状態を示す図である。
（ｇ）は負荷開閉回路Ａの状態を示す図である。
（ｈ）は負荷開閉回路Ｂの状態を示す図である。
（ｉ）は電池パックＡ，Ｂの電圧と駆動電圧の検出の状態を示す図である。
（ｊ）は電池ケースＡのロックの状態を示す図である。
（ｋ）は電池ケースＢのロックの状態を示す図である。
【図３】携帯機器用電源切替回路の電源切替時と電池パック交換時の動作タイミングチャートである。
（ａ）から（ｋ）は図２と同様である
【図４】主電源開閉回路と負荷開閉回路の実際の回路例である。
（ａ）は主電源開閉回路をＰチャンネルのＭＯＳＦＥＴでの構成する一例である。
（ｂ）は主電源開閉回路をリレーで構成する一例である。
（ｃ）は負荷開閉回路をＰチャンネルのＭＯＳＦＥＴで構成する一例である。
【符号の説明】
１ 携帯機器
２ 携帯機器表示装置
３ 電池パック収納ケースＡ
４ 電池パックＡ
５ 電池パックＡ収納ケース安全機構
６ ダイオード
７ 主電源開閉回路Ａ
８ 電池テスト用負荷開閉回路Ａ
９ 電池パック収納ケースＢ
１０ 電池パックＢ
１１ 電池パックＢ収納ケース安全機構
１２ ダイオード
１３ 主電源開閉回路Ｂ
１４ 電池テスト用負荷開閉回路Ｂ
１５ 電池テスト用負荷抵抗
１６ 開閉制御部
１７ 電池ケース安全機構開閉制御部
１８ 電源切替回路データ格納部
１９ 電圧検出部
２０ 電圧比較部
２１ 比較データ
２２ 制御用電源部
２３ 電源切替制御部
２４ 主電源開閉器
２５ 電池パックＡ＋端子電圧
２６ 電池パックＢ＋端子電圧
２７ 主回路駆動電圧
２８ 主電源開閉回路Ａ用制御信号
２９ 主電源開閉回路Ｂ用制御信号
３０ 電池テスト用負荷開閉回路Ａ用制御信号
３１ 電池テスト用負荷開閉回路Ｂ用制御信号
３２ 電池パックＡ収納ケース安全機構用制御信号
３３ 電池パックＢ収納ケース安全機構用制御信号
３４ 電源切替回路電流
３５ 携帯機器表示・警報用電源切替回路データ
３６ ＰチャンネルＭＯＳＦＥＴ
３７ ＰチャンネルＭＯＳＦＥＴ
３８ 抵抗
３９ 抵抗
４０ ＮＰＮトランジスタ
４１ リレー
４２ 抵抗
４３ ＮＰＮトランジスタ
４４ ＰチャンネルＭＯＳＦＥＴ
４５ 抵抗
４６ 抵抗
４７ ＮＰＮトランジスタ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is a portable device power supply system for supplying power from a secondary battery pack to a portable video camera or the like.
[0002]
[Prior art]
The power supply of the portable device is supported by extending the driving time by increasing the capacity of the secondary battery pack or reducing the power consumption of the device. However, in any of the methods, the driving becomes impossible due to a decrease in power capacity, and an expected result may not be obtained. In order to avoid such a situation, the secondary battery packs were replaced as soon as possible, and their abilities could not be fully utilized. Further, when replacing the secondary battery pack, the driving of the device has to be stopped.
[0003]
[Problems to be solved by the invention]
Even if the secondary battery pack of a portable device that is being driven is running out of batteries, the secondary battery pack can be replaced without affecting the operation of the device. An object of the present invention is to provide a power supply system for portable devices that can be safely replaced.
[0004]
[Means for Solving the Problems]
According to the present invention, a power supply unit of a portable device has two or more secondary battery packs, and power is supplied to the portable device from any one of the secondary battery packs. At the moment when the driving limit voltage is lowered, the ON time of the two secondary battery packs is switched while overlapping the minute time by a semiconductor switching element or the like, and the function of switching the secondary battery pack from the power system of the device by the semiconductor switching element or the like. It has a function that allows the detached secondary battery pack to be replaced at any time while the portable device is operating, and a function that locks and unlocks the battery pack storage case safety mechanism in conjunction with the switching timing of the secondary battery pack. It is characterized by.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Two or more main power switching circuits for supplying driving power from two or more battery packs while the portable device is operating, and the remaining battery packs after the battery pack is replaced at power-on or during operation Power supply switching control for locking and unlocking the battery pack storage case safety mechanism in conjunction with the battery pack switching process, and two or more load switching circuits for passing current through the load resistor to accurately measure the capacity This was achieved by controlling the unit.
[0006]
【Example】
FIG. 1 is a block diagram of a power supply switching circuit having two battery packs of the apparatus of the present invention. The driving power of the portable device 1 is supplied from either the battery pack A4 or the battery pack B10. 2 and 3 are timing charts when the capacity of the battery pack A4 is smaller than or equal to that of the battery pack B10 in the initial state. FIG. 4 is a practical example of each switching circuit.
[0007]
When the portable device 1 is driven, the power switch control unit 23 starts operating by turning on the main power switch 24 via the diode 6 or the diode 12 from the + side 25 of the battery pack A4 and the + side 26 of the battery pack B. I do. The power supply switching control unit 23 may be configured by a one-chip CPU or the like, or may be configured as a part of a power supply circuit of the mobile device 1. It is weak and has very little effect on the power system of the portable device 1.
[0008]
When the power supply switching control unit 23 starts operating, the battery pack A storage case safety mechanism 5 and the battery pack B storage case safety mechanism 11 receive a signal from the battery door control unit 17 as shown in (j) and (k) of FIG. Locked by signals 32 and 33
Within the time t1 shown in FIG. 2 (e), the control signal 30 of the load switching circuit A8 and the control signal 31 of the load switching circuit B14 are reduced to small values like t2 in FIG. 2 (g) and t3 in (h) in FIG. The battery pack A4 and the battery pack B10 alternately turn on for a period of time to allow current to flow from the battery pack A4 and the battery pack B10 to the load resistor 15 to avoid the influence of errors due to the internal resistance of the battery pack. 2 is detected, and it is confirmed that the voltage is equal to or higher than the power supply switching voltage shown in FIGS. At this time, when the terminal voltage 25 of the battery pack A4 or the terminal voltage 26 of the battery pack B10 does not reach the power supply switching voltage shown in FIGS. 2B and 2C, the safety mechanism of the battery pack case is used. Is unlocked and removed from the target of drive power.
[0010]
During the operation of the portable device 1, the power supply switching control unit 23 always detects the terminal voltage 25 of the battery pack A4, the terminal voltage 26 of the battery pack B10, and the main circuit driving voltage 27 by the voltage detecting unit 19, and outputs the comparison data 21. The voltage comparison unit 20 compares the power supply switching voltage of the battery pack and the driving limit voltage of the driving voltage, controls the switching timing of the battery pack, and checks whether the battery pack has been replaced.
[0011]
In the initial state, when the capacity of the battery pack A4 is smaller than or equal to that of the battery pack B10, the battery pack A4 controls the main power switch signal 28 from the switch control unit 16, and turns the main power switch circuit 7 on. Power is supplied to the portable device 1 from the battery pack A4.
[0012]
When the drive limit voltage is reached as shown in FIG. 3D while the main circuit drive voltage 27 is being detected, the main power switching circuit B13 is turned on as shown in FIG. The main power switch circuit A7 is turned off as shown in FIG. In the meantime, there is a minute time and the ON time of both main power supply switching circuits, and the driving power of the portable device 1 is continued. At this time, the lock 5 of the safety mechanism of the battery pack case 3 is released, and is excluded from the target of the driving power.
[0013]
As for the replacement of the battery pack A4 during driving, the terminal voltage 25 of the battery pack A4 once became 0 V, and the terminal voltage 25 of the battery pack became other than 0 V, as in the battery pack replacement of FIG. Get to know it. When the terminal voltage 25 of the battery pack A4 becomes stable, the load switching circuit A8 is turned on for a short period of time as shown in FIG. To know.
[0014]
In the initial state, when the capacity of the battery pack B10 is smaller than that of the battery pack A4, the battery pack B10 controls the main power switch signal 29 from the switch control unit 16, sets the main power switch circuit B13 to the ON state, and sets the portable device. 1 from the battery pack B10.
[0015]
When the drive limit voltage is reached during detection of the main circuit drive voltage 27, the main power switch circuit A7 is turned on, and then the main power switch circuit B13 is turned off. In the meantime, there is a minute time and the ON time of both main power supply switching circuits, and the driving power of the portable device 1 is continued. At this time, the lock 11 of the safety mechanism of the battery pack case 9 is released, and is excluded from the target of the driving power.
[0016]
The replacement of the battery pack B10 during the driving is known from the fact that the terminal voltage 26 of the battery pack B10 once becomes 0 V and the terminal voltage 26 of the battery pack B10 becomes other than 0V. When the terminal voltage 26 of the battery pack B10 is stabilized, the load switching circuit B14 is turned on for a short time to supply a current to the load resistor 15, and the terminal voltage 26 of the battery pack B10 is known by the voltage detection unit 19.
[0017]
The reason for setting the battery pack having a small power capacity to the drive power first is that the battery pack reaches the drive limit voltage shown in FIG. 3D during the drive of the battery pack, performs the battery pack switching process, and then replaces the battery pack. This is in order to secure enough time to do so.
[0018]
The remaining capacity of the battery pack A4 or the battery pack B10 can be retrieved from the data storage unit 18 and displayed on the display unit 2 of the portable device 1, and an alarm can be displayed for a battery pack that needs to be replaced. In addition, a warning can be given to the user with an LED or the like.
[0019]
The main power switching circuit is composed of two P-channel MOSFETs as shown in FIG. 4A, but may be another semiconductor switching element. When a voltage drop due to the semiconductor switching element is concerned, a relay may be used as shown in FIG. The load switching circuit is configured by a P-channel MOSFET as shown in FIG. 4C, but may be another semiconductor switching element. The main power switch 24 may be another semiconductor switching element.
[0020]
The resistance value of the load resistor 15 determines the value at which the remaining amount of the battery pack can be measured, excluding the influence of the internal resistance of the battery pack, depending on the type of the battery pack.
[0021]
The time during which the ON states of the main power switching circuit A7 and the main power switching circuit B13 when the battery packs are switched overlaps is determined in consideration of the influence on the portable device 1 and the effects on the battery packs A4 and B10. I do.
[0022]
The detection of whether or not the battery pack has been replaced from the battery case may be performed by, for example, a switch or the like linked to the lid of the battery case.
[0023]
【The invention's effect】
The portable device can be used without worrying about running out of batteries, the battery pack can be replaced safely without affecting the device while driving, and the maximum capacity of the battery pack can be utilized. No waste occurs.
[Brief description of the drawings]
FIG. 1 is a block diagram of a power supply switching circuit for a portable device.
FIG. 2 is an operation timing chart when a power supply of a power supply switching circuit for a portable device is turned on.
(A) is a figure which shows the state of a main power supply.
(B) is a diagram showing a terminal voltage (V1) of the battery pack A.
(C) is a diagram showing a terminal voltage (V2) of the battery pack B.
(D) is a diagram showing a supply voltage (VL) to the portable device.
(E) is a diagram showing the state of the main power switching circuit A.
(F) is a figure which shows the state of the main power switch circuit B.
(G) is a figure which shows the state of the load switching circuit A.
(H) is a figure which shows the state of the load switching circuit B.
(I) is a diagram showing a state of detecting the voltages of the battery packs A and B and the drive voltage.
(J) is a diagram showing a locked state of the battery case A.
(K) is a diagram showing a locked state of the battery case B.
FIG. 3 is an operation timing chart at the time of power switching of the power switching circuit for a portable device and at the time of battery pack replacement.
(A) to (k) are the same as in FIG. 2. FIG. 4 is an actual circuit example of a main power switching circuit and a load switching circuit.
(A) is an example in which the main power switching circuit is configured by a P-channel MOSFET.
(B) is an example in which the main power switch circuit is configured by a relay.
(C) is an example in which the load switching circuit is configured by a P-channel MOSFET.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Portable device 2 Portable device display device 3 Battery pack storage case A
4 Battery pack A
5 Battery Pack A Storage Case Safety Mechanism 6 Diode 7 Main Power Switching Circuit A
8 Load switching circuit A for battery test
9 Battery pack storage case B
10 Battery pack B
11 Battery Pack B Storage Case Safety Mechanism 12 Diode 13 Main Power Switching Circuit B
14 Load switching circuit B for battery test
15 Load resistance for battery test 16 Switching control unit 17 Battery case safety mechanism switching control unit 18 Power switching circuit data storage unit 19 Voltage detection unit 20 Voltage comparison unit 21 Comparison data 22 Power supply unit for control 23 Power supply switching control unit 24 Main power switching 25 Battery pack A + terminal voltage 26 Battery pack B + terminal voltage 27 Main circuit drive voltage 28 Control signal for main power switching circuit A 29 Control signal for main power switching circuit B 30 Control signal for load switching circuit A for battery test 31 Battery test Control signal for load switch circuit B for battery 32 Control signal for battery pack A storage case safety mechanism 33 Control signal for battery pack B storage case safety mechanism 34 Power supply switching circuit current 35 Power supply switching circuit data for portable device display / alarm 36 P-channel MOSFET
37 P-channel MOSFET
38 resistor 39 resistor 40 NPN transistor 41 relay 42 resistor 43 NPN transistor 44 P-channel MOSFET
45 resistor 46 resistor 47 NPN transistor

Claims (3)

複数個の２次電池パックを有し、携帯機器の駆動時は、いずれか一つの２次電池パックから電力供給し、電力容量低下により当該機器の駆動が不可能となる瞬間に、自動的に別の２次電池パックを微小時間オーバーラップさせながら、機器の動作を止めることなく、別の２次電池パックに切替え、当該２次電池パックは、電力供給回路から切り離される携帯機器用電力供給システム。It has a plurality of secondary battery packs, and when a portable device is driven, power is supplied from any one of the secondary battery packs, and automatically at the moment when the device cannot be driven due to a decrease in power capacity. The power supply system for a portable device is switched to another secondary battery pack without stopping the operation of the device while overlapping another secondary battery pack for a minute time, and the secondary battery pack is disconnected from the power supply circuit. . 電力供給回路から切り離された２次電池パックは、携帯機器が駆動中の状態でも、取り外し、または交換が可能な請求項１記載の携帯機器用電力供給システム。The power supply system for a portable device according to claim 1, wherein the secondary battery pack separated from the power supply circuit can be removed or replaced even while the portable device is in operation. 携帯機器の駆動中は、当該機器に電力供給している２次電池パックの収納ケース安全機構は電気機構的にロックがかけられ、電力供給回路から切り離されている２次電池パックのみが取り外し可能な請求項１または２記載の携帯機器用電力供給システム。While the portable device is operating, the storage case safety mechanism of the secondary battery pack that supplies power to the device is electrically locked and only the secondary battery pack that is disconnected from the power supply circuit can be removed. The power supply system for portable devices according to claim 1 or 2.
JP2003033464A 2003-02-12 2003-02-12 Power supply system for portable equipment Pending JP2004248369A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003033464A JP2004248369A (en) 2003-02-12 2003-02-12 Power supply system for portable equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003033464A JP2004248369A (en) 2003-02-12 2003-02-12 Power supply system for portable equipment

Publications (1)

Publication Number Publication Date
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Family

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012135179A (en) * 2010-12-24 2012-07-12 Sony Corp Discharge controller and discharge control method
JP2014197554A (en) * 2006-02-20 2014-10-16 エルジー・ケム・リミテッド High-efficiency operation-enabled hybrid battery pack

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014197554A (en) * 2006-02-20 2014-10-16 エルジー・ケム・リミテッド High-efficiency operation-enabled hybrid battery pack
JP2012135179A (en) * 2010-12-24 2012-07-12 Sony Corp Discharge controller and discharge control method

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