JPH06324166A - Electronic wristwatch - Google Patents
Electronic wristwatchInfo
- Publication number
- JPH06324166A JPH06324166A JP8673494A JP8673494A JPH06324166A JP H06324166 A JPH06324166 A JP H06324166A JP 8673494 A JP8673494 A JP 8673494A JP 8673494 A JP8673494 A JP 8673494A JP H06324166 A JPH06324166 A JP H06324166A
- Authority
- JP
- Japan
- Prior art keywords
- power generation
- secondary battery
- power generating
- charging
- solar cell
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electromechanical Clocks (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、充電可能な電源を有す
る電子腕時計の発電効率及び充電効率の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of power generation efficiency and charging efficiency of an electronic wrist watch having a rechargeable power source.
【０００２】[0002]
【従来の技術】図２に従来の実施例を示す。太陽電池１
の電気エネルギーは順方向のダイオード２を介して二次
電池３に流れるになっている。この場合、タイオード２
は、太陽電他１の電位が二次電池３よりも低いときに、
二次電池３から太陽電池１に流れる電流（ロス電流）を
防止するために設けられた逆流防止用のダイオードであ
る。電池電圧検出回路４は二次電池３が充電され過ぎて
その電圧が過充電防止電圧（例えば２．４Ｖ）になる
と、その出力により、太陽電池１に対して並列接続され
ているＭＯＳトランジスタ５をＯＮさせ、太陽電池１を
短絡して放電回路を形成し、太陽電池１の電位を下げて
過充電を防止するものである。2. Description of the Related Art FIG. 2 shows a conventional embodiment. Solar cell 1
The electric energy of the electric current flows to the secondary battery 3 via the diode 2 in the forward direction. In this case, Thai Aether 2
Is when the potential of Taiyoden or the like 1 is lower than that of the secondary battery 3,
It is a backflow prevention diode provided to prevent a current (loss current) flowing from the secondary battery 3 to the solar cell 1. When the secondary battery 3 is overcharged and its voltage reaches an overcharge prevention voltage (for example, 2.4 V), the battery voltage detection circuit 4 outputs the output of the MOS transistor 5 connected in parallel to the solar battery 1. It is turned on to short-circuit the solar cell 1 to form a discharge circuit and lower the potential of the solar cell 1 to prevent overcharge.
【０００３】なお６は、二次電池３の電気エネルギーで
駆動される発振回路・分周回路よりなる周知の時計回路
である。また７は、時刻を表示する表示装置である。電
池電圧検出回路４は常時動作させていると大きな電力を
消費するため、一定周期（例えば１秒）で間欠駆動す
る。Reference numeral 6 is a well-known clock circuit composed of an oscillation circuit and a frequency dividing circuit driven by the electric energy of the secondary battery 3. A display device 7 displays the time. Since the battery voltage detection circuit 4 consumes a large amount of power when it is constantly operated, it is intermittently driven at a constant cycle (for example, 1 second).
【０００４】[0004]
【発明が解決しようとする課題】しかし、前述の従来技
術では二次電池３に図３に示すような充電内部抵抗が存
在するため、太陽電池１に光が照射していると、電圧検
出回路４は図４に示すように過充電防止電圧Ｖ1に達し
ていると誤判断し、時間ｔ1よりＭＯＳトランジスタ５
を短絡してしまい、次の電圧サンプリング時間までその
状態を持続する。すると二次電池電圧は図４に示すよう
にＶ2まで急激に電圧が低下し、時計回路の誤動作や、
表示不良を発生してしまう。However, in the above-mentioned conventional technique, since the secondary battery 3 has a charging internal resistance as shown in FIG. 3, when the solar cell 1 is irradiated with light, the voltage detection circuit 4 is a mis judged reached overcharge prevention voltages V 1 as shown in FIG. 4, MOS transistors 5 than the time t 1
Is short-circuited and remains in that state until the next voltage sampling time. Then, the voltage of the secondary battery sharply drops to V 2 as shown in FIG. 4, causing malfunction of the clock circuit,
Display failure will occur.
【０００５】また、永久磁石とコイルによりなる交流発
電機等では、ＭＯＳトランジスタ５のドレイン・ソース
間に寄生ダイオードが形成されていることにより、スイ
ッチング素子が短絡されていないときにも逆方向に交流
発電機に電流が流れ、交流発電機に逆起電力が発生する
ため、発電効率が落ちてしまうという課題があった。Further, in an AC generator including a permanent magnet and a coil, a parasitic diode is formed between the drain and the source of the MOS transistor 5, so that an alternating current is generated in the reverse direction even when the switching element is not short-circuited. Since a current flows through the generator and a counter electromotive force is generated in the AC generator, there is a problem that the power generation efficiency is reduced.
【０００６】本発明の目的は、上記課題を解決し、交流
発電装置からリミッタ防止ＭＯＳトランジスタを経由し
ての逆流による交流発電装置の逆起電力発生を防止し、
二次電池から交流発電装置への逆流を防止し、発電ロス
及び二次電池の充電ロスを防止し、発電効率と充電効率
を向上することにある。The object of the present invention is to solve the above-mentioned problems and prevent the generation of back electromotive force of the AC generator due to the reverse flow from the AC generator through the limiter prevention MOS transistor.
The purpose is to prevent backflow from the secondary battery to the AC generator, prevent power generation loss and charging loss of the secondary battery, and improve power generation efficiency and charging efficiency.
【０００７】[0007]
【課題を解決するための手段】本発明の電子腕時計は、
後段の電源を充電するための交流発電手段と、前記交流
発電手段により充電される電源と、該電源により駆動さ
れる時計回路とを備えた電子腕時計において、前記交流
発電手段と前記電源との間に直列に、前記交流発電手段
を整流する第１の逆流防止手段と、前記交流発電手段に
よる発電電圧が前記電源の耐電圧を超過しないよう前記
交流発電手段を短絡制御するスイッチング素子と、前記
交流発電手段と前記スイッチング素子との間に直列に、
前記交流発電手段から前記スイッチング素子を介して前
記交流発電手段への逆流を防止する第２の逆流防止手段
と、を備えたことを特徴とする。The electronic wrist watch of the present invention comprises:
In an electronic wristwatch equipped with an AC power generation unit for charging a power supply in the latter stage, a power supply charged by the AC power generation unit, and a clock circuit driven by the power supply, the electronic wristwatch includes a unit between the AC power generation unit and the power supply. A first backflow prevention means for rectifying the AC power generation means, a switching element for short-circuit controlling the AC power generation means so that the voltage generated by the AC power generation means does not exceed the withstand voltage of the power supply, and the AC In series between the power generation means and the switching element,
Second backflow preventing means for preventing backflow from the AC power generation means to the AC power generation means via the switching element.
【０００８】[0008]
【実施例】図１は本発明の実施例を示す回路ブロック図
である。なお図１において、図２に示したものと同一の
ものは同一符号をもって示し、その説明を省略する。1 is a circuit block diagram showing an embodiment of the present invention. In FIG. 1, the same parts as those shown in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted.
【０００９】電池電圧検出回路９は、一定周期（例えば
１秒）で間欠駆動し、二次電池３が充電され過ぎてその
電圧が過充電防止電圧（例えば２．４Ｖ）になると、そ
の出力によりＭＯＳトランジスタ５をＯＮさせ、太陽電
池１の電気エネルギーによりＬＥＤ（発光ダイオード）
８を点燈させる。従って、ＭＯＳトランジスタ５とＬＥ
Ｄ８が太陽電池１を短絡して放電回路を形成することに
なり、太陽電池１の電位を下げて過充電を防止すること
ができる。ここで、電池電圧検出回路９が二次電池３の
電圧を測定するときには常にＭＯＳトランジスタ５をＯ
Ｎし、太陽電池１の出力の影響を無くし、正確な二次電
池３の出力電圧を測定するように構成した。The battery voltage detection circuit 9 is intermittently driven at a constant cycle (for example, 1 second), and when the secondary battery 3 is overcharged and its voltage becomes an overcharge prevention voltage (for example, 2.4 V), its output causes The MOS transistor 5 is turned on, and the electric energy of the solar cell 1 causes an LED (light emitting diode)
Turn on 8. Therefore, the MOS transistor 5 and the LE
D8 short-circuits the solar cell 1 to form a discharge circuit, and the potential of the solar cell 1 can be lowered to prevent overcharge. Here, when the battery voltage detection circuit 9 measures the voltage of the secondary battery 3, the MOS transistor 5 is always turned on.
N, the influence of the output of the solar cell 1 is eliminated, and the output voltage of the secondary battery 3 is accurately measured.
【００１０】ＭＯＳトランジスタ５のゲート電圧は、図
５のタイミングチャートに示すように、１秒に１回１０
ｍｓｅｃの間Ｖｓｓ電圧となる。この１０ｍｓｅｃの間
が電池電圧の検出時間であり、この間ＭＯＳトランジス
タ５はＯＮされ、太陽電池１の発電エネルギーはＭＯＳ
トランジスタ５とＬＥＤ８を通つて消費され、二次電池
３には流れないため、二次電池３の正確な出力電圧を測
定することが可能となる。The gate voltage of the MOS transistor 5 is 10 times per second as shown in the timing chart of FIG.
It becomes the Vss voltage for msec. During this 10 msec is the battery voltage detection time, during which the MOS transistor 5 is turned on and the power generation energy of the solar cell 1 is MOS.
Since it is consumed through the transistor 5 and the LED 8 and does not flow to the secondary battery 3, it is possible to measure the accurate output voltage of the secondary battery 3.
【００１１】以上のように構成された充電回路におい
て、ＬＥＤ８を図６、図７に示すよう時計の文字板１１
から見える構造にした。ここで７ａは時針、７ｂは秒
針、７ｃは分針、１０はリューズ、１１は文字板、１２
は外装ケース、１３は裏ブタ、１４は時計ムーブメント
を示す。これによりＬＥＤ８は太陽電池１に光が当って
いるときはいつも１秒周期で点滅し、充電が行なわれて
いることを示すインジゲータとなる。又、過充電電圧に
達すると太陽電池に光が当っている間は常時点燈するた
め、充電完了を示すインジゲータとなり、電子腕時計の
ユーザーにとってきわめて便利な充電状況の告知装置と
なっている。In the charging circuit configured as described above, the LED 8 is connected to the dial 11 of the timepiece as shown in FIGS.
The structure is visible from the bottom. 7a is an hour hand, 7b is a second hand, 7c is a minute hand, 10 is a crown, 11 is a dial, and 12 is a dial.
Is an outer case, 13 is a back cover, and 14 is a timepiece movement. As a result, the LED 8 blinks at a cycle of 1 second whenever the solar cell 1 is exposed to light, and serves as an indicator indicating that charging is being performed. Also, when the overcharge voltage is reached, the solar cell is constantly lit while the solar cell is exposed to light, and thus it serves as an indicator that indicates the completion of charging, and is an extremely convenient notification device of the charging status for the user of the electronic wristwatch.
【００１２】なお本実施例においては、発電装置として
太陽電池を用いているが、発電するものであれば何でも
良く、永久磁石とコイルより成る発電機でも、外部磁界
により誘起電圧を発生させるためのコイルのみでも、ピ
エゾ効果を利用した発電機でも良い。また、電源の二次
電池としては充電可能ならば銀電池でもリチウム電池で
もＮｉ−Ｃｄ電池でもコンデンサーでも何でも良い。In this embodiment, a solar cell is used as a power generator, but any device capable of generating power may be used, and even a generator including a permanent magnet and a coil is used to generate an induced voltage by an external magnetic field. A coil alone or a generator using the piezo effect may be used. The secondary battery of the power source may be any battery such as a silver battery, a lithium battery, a Ni-Cd battery or a capacitor, as long as it can be charged.
【００１３】また、時計用の表示装置としては時刻のわ
かるものなら何でも良く、アナログ表示でもデジタル表
示でもかまわない。又、ＬＥＤ８をＭＯＳトランジスタ
５と直列に接続しているが、ＬＥＤ８は電流を流して発
光するものが良い。また、インジケーターとして使わな
いならダイオードでも良い。Further, as the display device for a clock, any device which shows the time may be used, and either analog display or digital display may be used. Further, the LED 8 is connected in series with the MOS transistor 5, but it is preferable that the LED 8 emits light by passing a current. A diode may be used if it is not used as an indicator.
【００１４】[0014]
【発明の効果】以上述べたように、本発明の電子腕時計
は、交流発電手段と電源との間に直列に、前記交流発電
手段を整流する第１の逆流防止手段と、前記交流発電手
段とスイッチング素子との間に直列に、前記交流発電手
段から前記スイッチング素子を介して前記交流発電手段
への逆流を防止する第２の逆流防止手段とを備えたこと
により、交流発電手段からスイッチング素子を介しての
交流発電手段の逆起電力発生を防止するとともに、二次
電池から交流発電手段への逆流及び二次電池のスイッチ
ング素子を介しての短絡を防止し、発電ロス及び二次電
池の充電ロスを防止し、発電効率と充電効率を向上する
という効果を有する。As described above, the electronic wrist watch of the present invention comprises the first backflow preventing means for rectifying the alternating current generating means in series between the alternating current generating means and the power source, and the alternating current generating means. By providing in series with the switching element a second backflow prevention means for preventing backflow from the alternating current power generation means to the alternating current power generation means via the switching element, the switching element is switched from the alternating current power generation means. It prevents the generation of back electromotive force of the alternating current power generation means through the secondary battery, and also prevents the backflow from the secondary battery to the alternating current power generation means and the short circuit through the switching element of the secondary battery, thereby causing power generation loss and charging of the secondary battery It has the effects of preventing loss and improving power generation efficiency and charging efficiency.
【図１】本実施例を示す回路ブロック図。FIG. 1 is a circuit block diagram showing this embodiment.
【図２】従来の実施例を示す回路ブロツク図。FIG. 2 is a circuit block diagram showing a conventional embodiment.
【図３】ニ次電池の等価回路図。FIG. 3 is an equivalent circuit diagram of a secondary battery.
【図４】二次電池の充電電圧特性図。FIG. 4 is a charging voltage characteristic diagram of a secondary battery.
【図５】電池電圧検出回路図。FIG. 5 is a battery voltage detection circuit diagram.
【図６】本実施例を示す腕時計の外観図。FIG. 6 is an external view of a wristwatch showing the present embodiment.
【図７】本実施例を示す腕時計の断面図。FIG. 7 is a cross-sectional view of a wristwatch showing this embodiment.
１・・・太陽電池 ２・・・ダイオード ３・・・二次電池 ４・・・電池電圧検出回路 ５・・・ＭＯＳトランジスタ ６・・・時計回路 ７・・・表示装置 ８・・・ＬＥＤ（発光ダイオード） ９・・・電池電圧検出回路 １０・・リューズ １１・・文字板 １２・・外装ケース １３・・裏ブタ １４・・時計ムーブメント 1 ... Solar cell 2 ... Diode 3 ... Secondary battery 4 ... Battery voltage detection circuit 5 ... MOS transistor 6 ... Clock circuit 7 ... Display device 8 ... LED ( Light-emitting diode) 9 ... Battery voltage detection circuit 10 ... Crown 11 ... Dial 12 ... Exterior case 13 ... Back lid 14 ... Clock movement
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年５月１３日[Submission date] May 13, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００２[Name of item to be corrected] 0002
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００２】[0002]
【従来の技術】図２に従来例を示す。太陽電池１の電気
エネルギーは順方向のダイオード２を介して二次電池３
に流れるになっている。この場合、タイオード２は、太
陽電他１の電位が二次電池３よりも低いときに、二次電
池３から太陽電池１に流れる電流（ロス電流）を防止す
るために設けられた逆流防止用のダイオードである。電
池電圧検出回路４は二次電池３が充電され過ぎてその電
圧が過充電防止電圧（例えば２．４Ｖ）になると、その
出力により、太陽電池１に対して並列接続されているＭ
ＯＳトランジスタ５をＯＮさせ、太陽電池１を短絡して
放電回路を形成し、太陽電池１の電位を下げて過充電を
防止するものである。BACKGROUND OF THE INVENTION show the Supporting come example is shown in Figure 2. The electric energy of the solar cell 1 is transferred to the secondary battery 3 via the diode 2 in the forward direction.
It is supposed to flow to. In this case, the tiode 2 is provided for preventing backflow provided to prevent a current (loss current) flowing from the secondary battery 3 to the solar cell 1 when the potential of the solar cell 1 or the like is lower than that of the secondary cell 3. Is a diode. When the secondary battery 3 is overcharged and its voltage becomes an overcharge prevention voltage (for example, 2.4 V), the battery voltage detection circuit 4 outputs the output voltage, which is connected in parallel to the solar battery 1 by M.
The OS transistor 5 is turned on, the solar cell 1 is short-circuited to form a discharge circuit, and the potential of the solar cell 1 is lowered to prevent overcharge.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００５[Name of item to be corrected] 0005
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００５】また、図８に示すように、永久磁石とコイ
ルによりなる交流発電機等では、ＭＯＳトランジスタ５
のドレイン・ソース間に寄生ダイオード５１が形成され
ていることにより、スイッチング素子５が短絡されてい
ないときにも逆方向に交流発電機に電流が流れ、交流発
電機に逆起電力が発生するため、発電効率が落ちてしま
うという課題があった。本発明の目的は、上記課題を解
決し、交流発電装置からリミッタ防止ＭＯＳトランジス
タを経由しての逆流による交流発電装置の逆起電力発生
を防止し、二次電池から交流発電装置への逆流を防止
し、発電ロス及び二次電池の充電ロスを防止し、発電効
率と充電効率を向上することにある。Further, as shown in FIG. 8, in an AC generator or the like composed of a permanent magnet and a coil, the MOS transistor 5
Since the parasitic diode 51 is formed between the drain and the source of the device, current flows through the AC generator in the opposite direction even when the switching element 5 is not short-circuited, and counter electromotive force is generated in the AC generator. However, there was a problem that the power generation efficiency was reduced. An object of the present invention is to solve the above-mentioned problems, prevent back electromotive force from being generated in an AC power generation device by a backflow from an AC power generation device via a limiter prevention MOS transistor, and prevent backflow from a secondary battery to the AC power generation device. To prevent power generation loss and secondary battery charging loss, and improve power generation efficiency and charging efficiency.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００６】[0006]
【課題を解決するための手段】本発明の電子腕時計は、
交流発電手段と、該交流発電手段により充電される電源
と、該電源により駆動される時計回路とを備えた電子腕
時計において、前記交流発電手段と前記電源との間に直
列に、前記交流発電手段の交流出力を整流する第１の逆
流防止手段と、前記交流発電手段による発電電圧が前記
電源の耐電圧を超過しないよう前記交流発電手段を短絡
制御するスイッチング素子と、前記交流発電手段と前記
スイッチング素子との間に直列に、前記スイッチング素
子を介して前記交流発電手段の逆流を防止する第２の逆
流防止手段と、を備えたことを特徴とする。The electronic wrist watch of the present invention comprises:
And ac power generating means, and a power supply that is charged by the alternator means, in an electronic watch and a clock circuit driven by the power source, in series between said power supply said AC power generating unit, the AC generator First backflow prevention means for rectifying the AC output of the means, a switching element for short-circuit controlling the AC power generation means so that the voltage generated by the AC power generation means does not exceed the withstand voltage of the power source, the AC power generation means, and the A second backflow prevention means for preventing backflow of the AC power generation means via the switching element is provided in series with the switching element.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】以上のように構成された充電回路におい
て、ＬＥＤ８を図６、図７に示すよう時計の文字板１１
から見える構造にした。ここで７ａは時針、７ｂは秒
針、７ｃは分針、１０はリューズ、１１は文字板、１２
は外装ケース、１３は裏ブタ、１４は時計ムーブメント
を示す。これによりＬＥＤ８は太陽電池１に光が当って
いるときはいつも１秒周期で点滅し、充電が行なわれて
いることを示すインジゲータとなる。又、過充電電圧に
達すると太陽電池に光が当っている間は常時点燈するた
め、充電完了を示すインジケーターとなり、電子腕時計
のユーザーにとってきわめて便利な充電状況の告知装置
となっている。In the charging circuit constructed as described above, the LED 8 is connected to the dial 11 of the timepiece as shown in FIGS.
The structure is visible from the bottom. 7a is an hour hand, 7b is a second hand, 7c is a minute hand, 10 is a crown, 11 is a dial, and 12 is a dial.
Is an outer case, 13 is a back cover, and 14 is a timepiece movement. As a result, the LED 8 blinks at a cycle of 1 second whenever the solar cell 1 is exposed to light, and serves as an indicator indicating that charging is being performed. Further, when the overcharge voltage is reached, the solar cell is constantly lit while the solar cell is exposed to light, which serves as an indicator of the completion of charging, and is an extremely convenient notification device of the charging status for the user of the electronic wristwatch.
【手続補正６】[Procedure correction 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１３[Correction target item name] 0013
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１３】[0013]
【発明の効果】以上述べたように、本発明の電子腕時計
は、交流発電手段と電源との間に直列に、前記交流発電
手段の交流出力を整流する第１の逆流防止手段と、前記
交流発電手段とスイッチンゲ素子との間に直列に、前記
スイッチング素子を介して前記交流発電手段の逆流を防
止する第２の逆流防止手段とを備えたことにより、交流
発電手段からスイッチング素子を介しての交流発電手段
の逆起電力発生を防止するとともに、二次電池から交流
発電手段への逆流及び二次電池のスイッチング素子を介
しての短絡を防止し、発電ロス及び二次電池の充電ロス
を防止し、発電効率と充電効率を向上するという効果を
有する。As described above, the electronic wrist watch of the present invention comprises the first backflow prevention means for rectifying the AC output of the AC power generation means in series between the AC power generation means and the power source, and the AC current. series between the power means and the Suitchinge element, by which a second backflow prevention means for preventing backflow of the AC generator means via a pre-Symbol switching element, through the switching element from the alternator means In addition to preventing back electromotive force from occurring in the AC power generation means, it also prevents backflow from the secondary battery to the AC power generation means and short circuit through the switching element of the secondary battery, thus reducing power generation loss and charging loss of the secondary battery. It has the effect of preventing it and improving power generation efficiency and charging efficiency.
【手続補正７】[Procedure Amendment 7]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Name of item to be corrected] Brief description of the drawing
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図面の簡単な説明】[Brief description of drawings]
【図１】本実施例を示す回路ブロック図。FIG. 1 is a circuit block diagram showing this embodiment.
【図２】従来例を示す回路ブロツク図。FIG. 2 is a circuit block diagram showing a conventional example .
【図３】二次電池の等価回路図。FIG. 3 is an equivalent circuit diagram of the secondary battery.
【図４】二次電池の充電電圧特性図。FIG. 4 is a charging voltage characteristic diagram of a secondary battery.
【図５】電池電圧検出回路図。FIG. 5 is a battery voltage detection circuit diagram.
【図６】本実施例を示す腕時計の外観図。FIG. 6 is an external view of a wristwatch showing the present embodiment.
【図７】本実施例を示す腕時計の断面図。 FIG. 7 is a cross-sectional view of a wristwatch showing this embodiment.
【図８】従来例を示す回路図。FIG. 8 is a circuit diagram showing a conventional example.
【符号の説明】 １・・・太陽電池 ２・・・ダイオード ３・・・二次電池 ４・・・電池電圧検出回路 ５・・・ＭＯＳトランジスタ ６・・・時計回路 ７・・・表示装置 ８・・・ＬＥＤ（発光ダイオード） ９・・・電池電圧検出回路 １０・・リユーズ １１・・文字板 １２・・外装ケース １３・・裏ブタ １４・・時計ムーブメント[Explanation of Codes] 1 ... Solar cell 2 ... Diode 3 ... Secondary battery 4 ... Battery voltage detection circuit 5 ... MOS transistor 6 ... Clock circuit 7 ... Display device 8・ ・ ・ LED (light emitting diode) 9 ・ ・ ・ Battery voltage detection circuit 10 ・ Reuse 11 ・ ・ Dial 12 ・ ・ Exterior case 13 ・ ・ Back lid 14 ・ ・ Clock movement
【手続補正８】[Procedure Amendment 8]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図８[Correction target item name] Figure 8
【補正方法】追加[Correction method] Added
【補正内容】[Correction content]
【図８】 [Figure 8]
Claims (1)
と、 前記交流発電手段により充電される電源と、 該電源により駆動される時計回路とを備えた電子腕時計
において、 前記交流発電手段と前記電源との間に直列に、前記交流
発電手段を整流する第１の逆流防止手段と、 前記交流発電手段による発電電圧が前記電源の耐電圧を
超過しないよう前記交流発電手段を短絡制御するスイッ
チング素子と、 前記交流発電手段と前記スイッチング素子との間に直列
に、前記交流発電手段から前記スイッチング素子を介し
て前記交流発電手段への逆流を防止する第２の逆流防止
手段と、を備えたことを特徴とする電子腕時計。1. An electronic wrist watch comprising an AC power generation means for charging a power supply at a latter stage, a power supply charged by the AC power generation means, and a clock circuit driven by the power supply, wherein the AC power generation means A first backflow prevention unit that rectifies the AC power generation unit in series with the power supply, and a switching that short-circuits the AC power generation unit so that the voltage generated by the AC power generation unit does not exceed the withstand voltage of the power supply. An element, and a second backflow prevention unit that prevents a backflow from the AC power generation unit to the AC power generation unit via the switching element in series between the AC power generation unit and the switching element. An electronic wrist watch characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8673494A JP2573909B2 (en) | 1994-04-25 | 1994-04-25 | Electronic clock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8673494A JP2573909B2 (en) | 1994-04-25 | 1994-04-25 | Electronic clock |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60076006A Division JPH0740772B2 (en) | 1985-04-10 | 1985-04-10 | Electronic wrist watch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06324166A true JPH06324166A (en) | 1994-11-25 |
| JP2573909B2 JP2573909B2 (en) | 1997-01-22 |
Family
ID=13895062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8673494A Expired - Lifetime JP2573909B2 (en) | 1994-04-25 | 1994-04-25 | Electronic clock |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2573909B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998021815A1 (en) * | 1996-11-13 | 1998-05-22 | Seiko Epson Corporation | Power supply device and portable electronic equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300647A (en) * | 2014-10-31 | 2015-01-21 | 广西师范学院 | Portable charger pal |
-
1994
- 1994-04-25 JP JP8673494A patent/JP2573909B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998021815A1 (en) * | 1996-11-13 | 1998-05-22 | Seiko Epson Corporation | Power supply device and portable electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2573909B2 (en) | 1997-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR940006915B1 (en) | Electronic wrist watch with power generator | |
| JP3864107B2 (en) | Electronic clock | |
| KR930005425B1 (en) | Electronic timepiece | |
| EP1018675B1 (en) | Power supply device, control method for the power supply device, portable electronic device, timepiece, and control method for the timepiece | |
| US6373790B1 (en) | Overcharge prevention method, changing circuit, electronic device and timepiece | |
| US6463010B1 (en) | Electronic timepiece and method for controlling the same | |
| US6476580B1 (en) | Electronic apparatus and control method for electronic apparatus | |
| EP1098235B1 (en) | Electronic timepiece | |
| JP3472878B2 (en) | Overcharge prevention method, charging circuit, electronic device and watch | |
| CN1257231A (en) | Electronic device and control method thereof | |
| JP2000504834A (en) | Battery charging device using photovoltaic cell and timepiece having such a charging device | |
| JPH06324166A (en) | Electronic wristwatch | |
| US5822278A (en) | Electronic timepiece and method of charging the same | |
| US3802178A (en) | Electric timepiece with light responsive battery recharging | |
| JPS61236332A (en) | Electronic wrist watch | |
| JP3680697B2 (en) | Electronic timepiece and drive control method thereof | |
| JP2537641B2 (en) | Analog electronic clock | |
| JPH116882A (en) | Electronic controlling mechanical timepiece | |
| JP2537642B2 (en) | Analog electronic clock | |
| JP2537640B2 (en) | Analog electronic clock | |
| JP2004140992A (en) | Power generation detecting circuit, electronic apparatus, and power generation detecting method | |
| JPH1152077A (en) | Electronic controlled mechanical timepiece | |
| JP2000214271A (en) | Electronically controlled electronic apparatus, electronically controlled mechanical clock, and controlling method for the electronically controlled electronic apparatus | |
| JP2003029852A (en) | Power unit and method for controlling the same and portable electronic equipment and clocking device and method for controlling the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |