JPH04236379A - Counting circuit for residual quantity of charge of secondary battery - Google Patents
Counting circuit for residual quantity of charge of secondary batteryInfo
- Publication number
- JPH04236379A JPH04236379A JP3018284A JP1828491A JPH04236379A JP H04236379 A JPH04236379 A JP H04236379A JP 3018284 A JP3018284 A JP 3018284A JP 1828491 A JP1828491 A JP 1828491A JP H04236379 A JPH04236379 A JP H04236379A
- Authority
- JP
- Japan
- Prior art keywords
- value
- secondary battery
- current
- output
- remaining charge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000010365 information processing Effects 0.000 claims description 14
- 230000015654 memory Effects 0.000 abstract description 24
- 230000007717 exclusion Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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
- Tests Of Electric Status Of Batteries (AREA)
- Power Sources (AREA)
- 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】本発明は二次電池の充電残量計数
回路に関し、特に論理回路で構成された情報処理装置用
の二次電池の充電残量計数回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit for counting the remaining charge of a secondary battery, and more particularly to a circuit for counting the remaining charge of a secondary battery for an information processing device, which is constructed of a logic circuit.
【０００２】0002
【従来の技術】従来、二次電池の充電残量制御回路は、
電池の電圧が論理回路を動作不能にするレベルに達した
ことを検出する検出回路と、その検出信号に基づいて空
充電であることを表示する手段とを備えていた。[Prior Art] Conventionally, the remaining charge control circuit for a secondary battery is
It was equipped with a detection circuit that detects when the voltage of the battery reaches a level that makes the logic circuit inoperable, and means for indicating that the battery is empty based on the detection signal.
【０００３】0003
【発明が解決しようとする課題】この従来の充電残量制
御回路では、空充電に至るまで充電残量が認識できない
ため、充電の開始を予告することが難しく、かつ充電残
量を考慮して高電力を要するジョブの投入を避けること
が不可能であることなどの問題点があった。[Problems to be Solved by the Invention] With this conventional charge remaining amount control circuit, the remaining charge amount cannot be recognized until the charge is empty, so it is difficult to predict the start of charging, and it is difficult to predict the start of charging. There have been problems such as the inability to avoid submitting jobs that require high power.
【０００４】本発明の目的は充電残量の認識を可能にし
た二次電池の充電残量計数回路を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a circuit for counting the remaining charge of a secondary battery, which makes it possible to recognize the remaining charge.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するため
、本発明に係る二次電池の充電残量計数回路においては
、二次電池から装置に流れる電流を測定し、ディジタル
値に変換する手段と、前記二次電池の電流と給電可能時
間との積である規格値を前記ディジタル値に対応させ演
算の際に初期値となるデータを格納している記憶手段と
、前記電流値をディジタル値に変換した値により減算を
単位時間毎に繰返して行う減算器と、前記減算結果を積
算値として記憶する手段とを有するものである。[Means for Solving the Problems] In order to achieve the above-mentioned object, in the secondary battery remaining charge counting circuit according to the present invention, a means for measuring the current flowing from the secondary battery to the device and converting it into a digital value is provided. a storage means that stores data that corresponds to the digital value and becomes an initial value during calculation; The subtraction device has a subtracter that repeatedly performs subtraction every unit time using a value converted into , and a means for storing the result of the subtraction as an integrated value.
【０００６】また、前記初期値の記憶手段からの出力値
を分母にし、積算値を記憶する手段からの出力値を分子
として割合演算を行う演算器と、前記割合演算を行う演
算器の出力である充電残量割合値を情報処理装置より入
出力読出可能とする読出手段とを有するものである。[0006] Also, an arithmetic unit that performs a ratio calculation using the output value from the initial value storage means as the denominator and an output value from the integrated value storage means as the numerator; The information processing apparatus includes a reading means that allows input/output reading of a certain remaining charge percentage value from the information processing apparatus.
【０００７】また、前記ディジタル化した電流値とあら
かじめ情報処理装置から指定されている超過電流値とを
比較する手段と、前記比較により超過電流値以上の電流
が検出されたことを保持し、情報処理装置へ通報する手
段と、前記超過電流値を情報処理装置から受信して格納
する手段とを有するものである。[0007] The present invention also includes means for comparing the digitized current value with an excess current value specified in advance by the information processing device; It has means for notifying the processing device, and means for receiving and storing the excess current value from the information processing device.
【０００８】[0008]
【作用】電流を抵抗素子３により電圧降下量に変換し、
その値をＡ／Ｄコンバータ５によりディジタル値に変換
し、そのディジタル値を単位時間毎にサンプリングし、
そのサンプリングされたディジタル値と読出専用メモリ
８から読出された初期値とを減算回路１１で繰返して減
算処理することにより、充電残量を算出し表示器１８に
て表示するものである。[Function] Converts the current into a voltage drop by the resistance element 3,
The value is converted into a digital value by the A/D converter 5, and the digital value is sampled every unit time.
By repeatedly subtracting the sampled digital value and the initial value read from the read-only memory 8 in the subtraction circuit 11, the remaining charge amount is calculated and displayed on the display 18.
【０００９】[0009]
【実施例】次に本発明について図面を参照して説明する
。図１は、本発明の一実施例を示す回路図である。図２
は、二次電池の放電特性を示す図であり、本発明はこの
放電特性を利用している。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings. FIG. 1 is a circuit diagram showing one embodiment of the present invention. Figure 2
is a diagram showing the discharge characteristics of a secondary battery, and the present invention utilizes this discharge characteristic.
【００１０】図２の放電特性において、充電直後はＶ１
を上まわる電圧となるが、すぐにＶ１を下まわる。Ｖ１
に対応する時間座標の値がＴ１である。さらに放電が進
むと、電圧はＶ２に近づいていき、Ｖ２を下まわると、
急激に電圧は低下する。Ｖ２に対応する時間がＴ２であ
る。Ｖ２は装置電源電圧の下限値として設定し、本発明
で充電残量を積算する範囲は、Ｔ２よりも少し手間の位
置にＴ３を設定することで、原点からＴ１までの期間は
満充電として残量割合１００％を、Ｔ１〜Ｔ３までの期
間は積算期間につき残量割合１００〜０％を、Ｔ３〜Ｔ
２までの期間は空充電として残量割合０％をそれぞれ表
示する。In the discharge characteristics shown in FIG. 2, immediately after charging, V1
The voltage exceeds V1, but it quickly falls below V1. V1
The value of the time coordinate corresponding to is T1. As the discharge progresses further, the voltage approaches V2, and when it drops below V2,
The voltage drops suddenly. The time corresponding to V2 is T2. V2 is set as the lower limit of the device power supply voltage, and the range in which the remaining charge is accumulated in the present invention is to set T3 at a position that is a little more difficult than T2, so that the period from the origin to T1 remains fully charged. The remaining amount ratio is 100% for the period from T1 to T3, and the remaining amount ratio is 100 to 0% for the integration period from T3 to T3.
During the period up to 2, the remaining charge percentage is displayed as 0% as an empty charge.
【００１１】図１において、１は情報処理装置、２は二
次電池、３は抵抗素子、４は電圧増幅器、５はＡ／Ｄコ
ンバータ、６はラッチ、７はタイミング制御回路である
。また、８は読出専用メモリ、９はメモリ、１０はマル
チプレクサ、１１は減算回路、１２はデコーダ、１３は
割合演算回路、１４はＶ１電圧検出回路、１５はＶ２電
圧検出回路、１６はフリップフロップ、１７は表示制御
回路である。また、１８は表示器、１９は読出制御回路
、２０はラッチ、２１は比較回路、２２はフリップフロ
ップ、２３はカウンタ、２４は手動スイッチ、２５は補
助電池である。In FIG. 1, 1 is an information processing device, 2 is a secondary battery, 3 is a resistive element, 4 is a voltage amplifier, 5 is an A/D converter, 6 is a latch, and 7 is a timing control circuit. Further, 8 is a read-only memory, 9 is a memory, 10 is a multiplexer, 11 is a subtraction circuit, 12 is a decoder, 13 is a ratio calculation circuit, 14 is a V1 voltage detection circuit, 15 is a V2 voltage detection circuit, 16 is a flip-flop, 17 is a display control circuit. Further, 18 is a display, 19 is a readout control circuit, 20 is a latch, 21 is a comparison circuit, 22 is a flip-flop, 23 is a counter, 24 is a manual switch, and 25 is an auxiliary battery.
【００１２】情報処理装置１の電源として、二次電池が
存在し、二次電池２の出力電圧１０１は、抵抗素子３に
よる電圧降下により低下し、装置電源１０２として各回
路に供給される。また抵抗素子３の両端には、電圧降下
分の電圧が発生する。なお、装置電源として大きな電圧
降下が発生すると、装置に悪影響を与えるので、少量の
抵抗である抵抗素子を採用している。A secondary battery is provided as a power source for the information processing device 1, and the output voltage 101 of the secondary battery 2 is reduced due to a voltage drop caused by the resistive element 3, and is supplied to each circuit as the device power source 102. Further, a voltage equivalent to the voltage drop is generated across the resistive element 3. Note that if a large voltage drop occurs in the device power supply, it will have an adverse effect on the device, so a resistance element with a small amount of resistance is used.
【００１３】電圧降下量を増幅する電圧増幅器４があり
、この出力のアナログ電圧信号１０３をディジタル化す
るものとして、Ａ／Ｄコンバータ５がある。ディジタル
化されたディジタル電圧信号１０４は、単位時間毎にサ
ンプリングされてラッチ書込信号１０８によりラッチ６
に格納される。There is a voltage amplifier 4 that amplifies the amount of voltage drop, and an A/D converter 5 that digitizes the output analog voltage signal 103. The digitized digital voltage signal 104 is sampled every unit time and is sent to the latch 6 by a latch write signal 108.
is stored in
【００１４】充電残量として積算された値を記憶するた
めにメモリ９が存在し、メモリ９の出力であるメモリ出
力信号１１０をラッチ６の出力である減算値信号１０５
により減算回路１１において減算する。A memory 9 exists to store the accumulated value as the remaining charge, and a memory output signal 110 which is the output of the memory 9 is used as a subtraction value signal 105 which is the output of the latch 6.
The subtraction circuit 11 performs subtraction.
【００１５】減算結果である減算出力信号１１２は、マ
ルチプレクサ１０を経由し被減算値信号１１１としてメ
モリ９に格納される。以降一定周期で減算が繰返される
。積算時の初期値は、読出専用メモリ８に記憶されてお
り、マルチプレクサ１０を介してメモリ９に格納される
。装置クロック信号１０６を得て、タイミング制御回路
７よりメモリ６と９への書込タイミング信号１０７が生
成される。初期値は、二次電池の規格値である電流と給
電時間の積を基にして抵抗素子３の抵抗値、電圧増幅器
４の増幅率、積算の周期により求められる。A subtraction output signal 112, which is the result of the subtraction, is stored in the memory 9 as a subtracted value signal 111 via the multiplexer 10. Thereafter, the subtraction is repeated at regular intervals. The initial value at the time of integration is stored in the read-only memory 8 and is stored in the memory 9 via the multiplexer 10. Upon receiving the device clock signal 106, the timing control circuit 7 generates a write timing signal 107 for the memories 6 and 9. The initial value is determined from the resistance value of the resistance element 3, the amplification factor of the voltage amplifier 4, and the integration cycle based on the product of the current and the power supply time, which are the standard values of the secondary battery.
【００１６】メモリ９は装置１の電源がオフのときにも
記憶を維持するため、補助電池２５から電源１２８が供
給される。Since the memory 9 maintains its memory even when the device 1 is powered off, power 128 is supplied from the auxiliary battery 25.
【００１７】メモリ９の出力であるメモリ出力信号１１
０が割合演算回路１３に入力されると、１０の値と乗算
され、次に読出専用メモリ８の出力である初期値信号１
０９とで除算される。この結果は０〜１０の整数のいず
れかを示し、これは充電残量の割合（０〜１０割を示す
）にほかならない。Memory output signal 11 which is the output of memory 9
When 0 is input to the ratio calculation circuit 13, it is multiplied by a value of 10, and then the initial value signal 1, which is the output of the read-only memory 8, is
Divided by 09. This result indicates any integer from 0 to 10, which is nothing but a percentage of the remaining charge (indicating 0 to 100%).
【００１８】使用者に充電残量を示すため、表示制御回
路１７の制御により、表示器１８に表示信号１１８が出
力され表示器１８で残量割合が表示される。In order to show the remaining charge amount to the user, a display signal 118 is output to the display 18 under the control of the display control circuit 17, and the remaining charge percentage is displayed on the display 18.
【００１９】割合演算回路１３の出力である割合演算出
力信号１１４は、情報処理装置１の入出力読出動作によ
り発生する装置読出制御信号１２０が読出制御回路１９
に達すると、充電残量割合を示す装置読出データ信号１
１９として装置へ送られる。The ratio calculation output signal 114, which is the output of the ratio calculation circuit 13, is a device read control signal 120 generated by the input/output read operation of the information processing device 1.
When it reaches, the device read data signal 1 indicating the remaining charge percentage
19 to the device.
【００２０】装置１に流れる電流がディジタル化され、
サンプリングされてラッチ６に格納された値（減算値信
号１０５が該当）が、装置１からあらかじめ入出力書込
データ信号１２１によりラッチ２０に格納された、電流
の超過を判定する基準電流値（比較データ信号１２２が
該当）を上まわるかどうかを比較回路２１で判定され比
較出力信号１２３が出力される。電流の超過が発生した
場合、フリップフロップ２２がセット状態となり、超過
電流発生通知信号１２４を装置１へ送信する。[0020] The current flowing through the device 1 is digitized,
The value sampled and stored in the latch 6 (corresponding to the subtraction value signal 105) is the reference current value (comparison The comparison circuit 21 determines whether or not the data signal 122 exceeds the corresponding value, and a comparison output signal 123 is output. When an excess current occurs, the flip-flop 22 enters a set state and transmits an excess current occurrence notification signal 124 to the device 1.
【００２１】二次電池２の電圧が満充電電圧Ｖ１未満で
あることを判定するＶ１電圧低下検出回路１４のＶ１電
圧低下検出信号１１５を用いて、満充電状態にあること
を判断したら、マルチプレクサ１０においてメモリ９に
格納するデータとして減算回路１１の出力ではなく読出
専用メモリ８の出力である初期値信号１０９を選択する
。When it is determined that the secondary battery 2 is in a fully charged state using the V1 voltage drop detection signal 115 of the V1 voltage drop detection circuit 14 that determines that the voltage of the secondary battery 2 is lower than the full charge voltage V1, the multiplexer 10 In this step, the initial value signal 109, which is the output of the read-only memory 8, is selected as the data to be stored in the memory 9, instead of the output of the subtraction circuit 11.
【００２２】満充電電圧Ｖ１以上であれば、充電状態は
満充電として常に残量割合が１００％又は１０割と割合
演算回路１３にて算出され、使用者に対しても表示器１
８において残量割合を通して満充電であることを知らせ
ることができる。If the full charge voltage is higher than V1, the charging state is fully charged and the remaining charge percentage is always calculated as 100% or 100% by the percentage calculation circuit 13, and the display 1 is also displayed to the user.
At step 8, it is possible to notify that the battery is fully charged through the remaining charge percentage.
【００２３】二次電池２の電圧が空充電電圧Ｖ２以下と
なったことを検出するものとして、Ｖ２電圧検出回路１
５が存在する。通常は電圧Ｖ２に至る前に充電残量値が
０となるように読出専用メモリ８の内容である初期値を
設定している。A V2 voltage detection circuit 1 is used to detect that the voltage of the secondary battery 2 has become equal to or lower than the empty charge voltage V2.
5 exists. Normally, the initial value, which is the content of the read-only memory 8, is set so that the remaining charge value becomes 0 before reaching the voltage V2.
【００２４】ところが、充電残量値が０となる前に、電
圧Ｖ２が検出されたときに、Ｖ２電圧低下検出信号１１
６に基づいて二次電池の寿命や充電方法の不具合などを
警報するために、フリップフロップ１６においてその状
態を保持する。However, when the voltage V2 is detected before the remaining charge value becomes 0, the V2 voltage drop detection signal 11
6, the state is maintained in the flip-flop 16 in order to issue a warning regarding the end of the life of the secondary battery or a problem with the charging method.
【００２５】使用者に対する警報はフリップフロップ１
６の電池異常検出信号１１７を表示制御回路１７を介し
て表示器１８へ表示されることにより可能となる。[0025] The alarm to the user is provided by the flip-flop 1.
This is made possible by displaying the battery abnormality detection signal 117 of No. 6 on the display 18 via the display control circuit 17.
【００２６】なお、フリップフロップ１６は装置電源が
オフ時にも状態保持を可能にするため、補助電池２５を
電源としている。また、使用者による手動スイッチ２４
の操作により保持リセット信号１２５が生じてフリップ
フロップ１６がリセット状態となる。Note that the flip-flop 16 uses an auxiliary battery 25 as a power source so that the state can be maintained even when the device power is turned off. In addition, a manual switch 24 by the user
The holding reset signal 125 is generated by this operation, and the flip-flop 16 is placed in a reset state.
【００２７】二次電池は充放電のサイクル数が所定の値
に達すると寿命となることから、このサイクル数をカウ
ントするものとしてカウンタ２３が存在する。カウンタ
２３は、残量を算出する減算回路１１の出力が０（０の
状態はデコーダ１２のゼロ検出信号１１３により判定）
となるか、あるいは減算回路１１の出力が０になる以前
にＶ２電圧検出回路１５にてＶ２以下の電圧が検出され
ると、１カウントする。カウンタ２３の充電回数表示信
号１２７は表示制御回路１７を介して表示器１８へ表示
される。カウンタ２３の出力を０に初期設定するには、
手動スイッチ２４の操作によりカウント初期化信号１２
６を出力させて達成できる。Since the secondary battery reaches the end of its lifespan when the number of charging and discharging cycles reaches a predetermined value, a counter 23 is provided to count the number of cycles. In the counter 23, the output of the subtraction circuit 11 that calculates the remaining amount is 0 (the state of 0 is determined by the zero detection signal 113 of the decoder 12).
or when a voltage equal to or lower than V2 is detected by the V2 voltage detection circuit 15 before the output of the subtraction circuit 11 becomes 0, it counts by 1. The charging number display signal 127 of the counter 23 is displayed on the display 18 via the display control circuit 17. To initialize the output of the counter 23 to 0,
The count initialization signal 12 is activated by operating the manual switch 24.
This can be achieved by outputting 6.
【００２８】なお、カウンタ２３は装置電源がオフ時に
も状態保持を可能にするため、補助電池２５を電源とし
ている。Note that the counter 23 uses an auxiliary battery 25 as a power source so that the state can be maintained even when the device power is turned off.
【００２９】[0029]
【発明の効果】以上説明したように本発明は、装置に流
れる電流を測定し、単位時間毎に電流値を積算し、二次
電池の電流と給電可能時間の積である規格値を基にした
初期値を減算することで充電残量を求めるので、充電か
ら放電に至る上で電池の使用できる程度を明確に把握す
ることができる。また、前記充電残量を初期値との比率
で表わすような割合演算を行うことにより、充電残量を
割合で表示でき、その割合表示による充電残量を情報処
理装置に提供することにより、情報処理装置に対し残量
が少ない場合には高電力を要するジョブの実行を抑えさ
せるという電源制御を行うことができる。さらに、情報
処理装置から高めの電流が流れた場合には、装置へ通報
することにより、高電流の発生を極力少なくして電池の
放電時間を長くするジョブ管理ができる。二次電圧が満
充電の電圧レベル以上にあれば、充電残量の積算値を常
に初期状態とすることで、充電直後に正しく満充電の電
圧レベルにあることを使用者に知らせることができる。
また、積算値が０となる前に空充電電圧が検出されたこ
とを判定し保持することで、二次電池の寿命到達や充電
不備を使用者に警報でき、また、二次電池の充放電サイ
クル数をカウントすることで、二次電池の寿命到達の有
無を使用者に知らせることができる。[Effects of the Invention] As explained above, the present invention measures the current flowing through the device, integrates the current value for each unit time, and calculates the current value based on the standard value, which is the product of the secondary battery current and the available power supply time. Since the remaining charge amount is determined by subtracting the initial value, it is possible to clearly grasp the extent to which the battery can be used from charging to discharging. Further, by performing a ratio calculation such as expressing the remaining charge amount as a ratio with the initial value, the remaining charge amount can be displayed as a percentage, and by providing the remaining charge amount by the percentage display to the information processing device, information can be obtained. Power control can be performed to suppress the execution of jobs that require high power when the remaining capacity of the processing device is low. Furthermore, when a high current flows from the information processing device, by notifying the device, job management can be performed to minimize the generation of high current and lengthen the battery discharge time. If the secondary voltage is higher than the full charge voltage level, by always setting the integrated value of the remaining charge to the initial state, it is possible to notify the user that the battery is at the full charge voltage level immediately after charging. In addition, by determining and retaining that the empty charge voltage has been detected before the integrated value reaches 0, it is possible to warn the user that the rechargeable battery has reached its end of life or that charging is insufficient. By counting the number of cycles, it is possible to notify the user whether or not the secondary battery has reached the end of its life.
【図１】本発明の一実施例を示す回路図である。FIG. 1 is a circuit diagram showing an embodiment of the present invention.
【図２】二次電池の放電特性を示す図である。FIG. 2 is a diagram showing the discharge characteristics of a secondary battery.
１ 情報処理装置 ２ 二次電池 ３ 抵抗素子 ４ 電圧増幅器 ５ Ａ／Ｄコンバータ ６ ラッチ ７ タイミング制御回路 ８ 読出専用メモリ ９ メモリ １０ マルチプレクサ １１ 減算回路 １２ デコーダ １３ 割合演算回路 １４ Ｖ１電圧検出回路 １５ Ｖ２電圧検出回路 １６ フリップフロップ １７ 表示制御回路 １８ 表示器 １９ 読出制御回路 ２０ ラッチ ２１ 比較回路 ２２ フリップフロップ ２３ カウンタ ２４ 手動スイッチ ２５ 補助電池 １０１ 二次電池出力電圧 １０２ 装置電源 １０３ アナログ電圧信号 １０４ ディジタル電圧信号 １０５ 減算値信号 １０６ 装置クロック信号 １０７ メモリ書込タイミング信号 １０８ ラッチ書込信号 １０９ 初期値信号 １１０ メモリ出力信号 １１１ 被減算値信号 １１２ 減算出力信号 １１３ ゼロ検出信号 １１４ 割合演算出力信号 １１５ Ｖ１電圧低下検出信号 １１６ Ｖ２電圧低下検出信号 １１７ 電池異常検出信号 １１８ 表示信号 １１９ 装置読出データ信号 １２０ 装置読出制御信号 １２１ 書込データ信号 １２２ 比較データ信号 １２３ 比較出力信号 １２４ 超過電流発生通知信号 １２５ 保持リセット信号 １２６ カウント初期化信号 １２７ 充電回数表示信号 １２８ 補助電池電源 1 Information processing device 2 Secondary battery 3 Resistance element 4 Voltage amplifier 5 A/D converter 6 Latch 7 Timing control circuit 8 Read-only memory 9. Memory 10 Multiplexer 11 Subtraction circuit 12 Decoder 13 Ratio calculation circuit 14 V1 voltage detection circuit 15 V2 voltage detection circuit 16 Flip-flop 17 Display control circuit 18 Display 19 Read control circuit 20 Latch 21 Comparison circuit 22 Flip-flop 23 Counter 24 Manual switch 25 Auxiliary battery 101 Secondary battery output voltage 102 Device power supply 103 Analog voltage signal 104 Digital voltage signal 105 Subtraction value signal 106 Device clock signal 107 Memory write timing signal 108 Latch write signal 109 Initial value signal 110 Memory output signal 111 Subtracted value signal 112 Subtraction output signal 113 Zero detection signal 114 Ratio calculation output signal 115 V1 voltage drop detection signal 116 V2 voltage drop detection signal 117 Battery abnormality detection signal 118 Display signal 119 Device read data signal 120 Device read control signal 121 Write data signal 122 Comparison data signal 123 Comparison output signal 124 Excess current occurrence notification signal 125 Holding reset signal 126 Count initialization signal 127 Charge count display signal 128 Auxiliary battery power supply
Claims (3)
し、ディジタル値に変換する手段と、前記二次電池の電
流と給電可能時間との積である規格値を前記ディジタル
値に対応させ演算の際に初期値となるデータを格納して
いる記憶手段と、前記電流値をディジタル値に変換した
値により減算を単位時間毎に繰返して行う減算器と、前
記減算結果を積算値として記憶する手段とを有すること
を特徴とする二次電池の充電残量計数回路。1. Means for measuring the current flowing from the secondary battery to the device and converting it into a digital value, and calculating a standard value, which is the product of the current of the secondary battery and the available power supply time, in correspondence with the digital value. a storage means that stores data that becomes an initial value when the current value is converted into a digital value; a subtracter that repeatedly performs subtraction every unit time using a value obtained by converting the current value into a digital value; and a subtracter that stores the result of the subtraction as an integrated value. 1. A circuit for counting remaining charge of a secondary battery, comprising means.
分母にし、積算値を記憶する手段からの出力値を分子と
して割合演算を行う演算器と、前記割合演算を行う演算
器の出力である充電残量割合値を情報処理装置より入出
力読出可能とする読出手段とを有することを特徴とする
請求項１に記載の二次電池の充電残量計数回路。2. An arithmetic unit that performs a ratio calculation using an output value from the initial value storage means as a denominator and an output value from the integrated value storage means as a numerator; and an output of the arithmetic unit that performs the ratio calculation. 2. The remaining charge amount counting circuit for a secondary battery according to claim 1, further comprising a reading means that allows input/output reading of a certain remaining charge percentage value from an information processing device.
じめ情報処理装置から指定されている超過電流値とを比
較する手段と、前記比較により超過電流値以上の電流が
検出されたことを保持し、情報処理装置へ通報する手段
と、前記超過電流値を情報処理装置から受信して格納す
る手段とを有することを特徴とする請求項１に記載の二
次電池の充電残量計数回路。3. Means for comparing the digitized current value with an excess current value specified in advance by an information processing device; and a means for retaining that a current equal to or greater than the excess current value has been detected as a result of the comparison; 2. The remaining charge amount counting circuit for a secondary battery according to claim 1, further comprising means for notifying a processing device, and means for receiving and storing the excess current value from the information processing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3018284A JPH04236379A (en) | 1991-01-17 | 1991-01-17 | Counting circuit for residual quantity of charge of secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3018284A JPH04236379A (en) | 1991-01-17 | 1991-01-17 | Counting circuit for residual quantity of charge of secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04236379A true JPH04236379A (en) | 1992-08-25 |
Family
ID=11967334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3018284A Pending JPH04236379A (en) | 1991-01-17 | 1991-01-17 | Counting circuit for residual quantity of charge of secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04236379A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5565782A (en) * | 1994-02-28 | 1996-10-15 | Nec Corporation | Electronic apparatus having key tone for reporting residual amount of battery capacity |
| JP2012252503A (en) * | 2011-06-02 | 2012-12-20 | Nec Corp | Terminal, information processor, and information processing system |
| CN103558559A (en) * | 2013-11-12 | 2014-02-05 | 上海电机学院 | System and method for monitoring state of charge of wireless sensor |
-
1991
- 1991-01-17 JP JP3018284A patent/JPH04236379A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5565782A (en) * | 1994-02-28 | 1996-10-15 | Nec Corporation | Electronic apparatus having key tone for reporting residual amount of battery capacity |
| JP2012252503A (en) * | 2011-06-02 | 2012-12-20 | Nec Corp | Terminal, information processor, and information processing system |
| CN103558559A (en) * | 2013-11-12 | 2014-02-05 | 上海电机学院 | System and method for monitoring state of charge of wireless sensor |
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