摘要:
A microcomputer in a device body operates so as to store every update of a maximum discharge current value (IMAX (A)) of a secondary battery (the whole plurality of cells), and operates so as to indicate the ratio value of the remaining capacity defined in a remaining capacity definition table with respect to a discharge voltage value (V (V)) of the secondary battery while reducing the ratio value in accordance with the maximum discharge current value (IMAX (A)) when obtaining the discharge voltage value (V (V)) from a protection circuit.
摘要:
A battery protection circuit for protecting a battery is proposed. The circuit includes a detecting circuit for detecting a battery condition and producing a detected voltage in relation to the battery condition, a comparator comparing the detected voltage with a given voltage, and a switching circuit controlling a connection between the battery and electrical elements. In the battery protection circuit, when the comparator determines that the battery needs to be protected from the battery condition, the switching circuit turns off to disconnect the battery from the electrical elements.
摘要:
An automatic document feeder having a recirculating conveying path with a first switchback means between the document hopper and a presentation area interfacing with the scanning exposure region of an optical reading apparatus and a second switchback means between the presentation area and the document hopper, each such switchback means being selectively operable to either invert the surfaces or reverse the leading and trailing edges of the document for presentation at the presentation area, so as to facilitate document handling in the event of jamming and to reduce the size of the feeder. Additionally, the feeder can be used in correspondence with a copying machine having a conveying path with a third switchback means located between a photosensitive drum and an intermediate tray for reversing the leading and trailing edges of the copying paper and a fourth switchback means located between the photosensitive drum and a discharge hopper for inverting the surfaces of the copying paper.
摘要:
To provide a technology for obtaining a remaining capacity of a battery with high accuracy. A battery remaining capacity predicting apparatus predicting a remaining capacity of a battery based on an open-circuit voltage of the battery, detects a charge current or a discharge current of the battery, integrates the currents, obtains an estimated value of the open-circuit voltage that corresponds to an integrated value of the currents on the basis of conversion information representing a capacity necessary for the open-circuit voltage of the battery to change by a predetermined capacity, obtains a measured value of the open-circuit voltage on the basis of the detected current and information on internal impedance, and obtains the remaining capacity of the battery based on the estimated value of the open-circuit voltage by correcting the information on the internal impedance so that the measured value of the open-circuit voltage is equalized to the estimated value of the open-circuit voltage, or by correcting the conversion information so that the estimated value of the open-circuit voltage is equalized to the measured value of the open-circuit voltage.
摘要:
The present invention relates to a compound defined by a formula herein, a composition and/or a method relating to one or more of the defined compounds.
摘要:
A protection method for preventing battery cells from over-discharging and being overcharged, a control circuit, and a battery unit are provided. In the protection method, when a set signal “1” is supplied to a set terminal, a flip-flop outputs “1”. The gate of a discharge control FET then becomes “1”, so that the discharge control FET is OFF regardless of a discharge control signal supplied from a voltage monitor circuit. When a reset signal “1” is supplied to a reset terminal, the flip-flop outputs “0”. The discharge control FET is then switched on and off in accordance with the output of a discharge control circuit of the voltage monitor circuit. In this manner, battery cells connected to an electronic device do not over-discharge, even when they are left unused for a long period of time. Thus, the battery unit can be prevented from deteriorating and shortening the life thereof.
摘要:
A protection method for preventing battery cells from over-discharging and being overcharged, a control circuit, and a battery unit are provided. In the protection method, when a set signal “1” is supplied to a set terminal, a flip-flop outputs “1”. The gate of a discharge control FET then becomes “1”, so that the discharge control FET is OFF regardless of a discharge control signal supplied from a voltage monitor circuit. When a reset signal “1” is supplied to a reset terminal, the flip-flop outputs +0”. The discharge control FET is then switched on and off in accordance with the output of a discharge control circuit of the voltage monitor circuit. In this manner, battery cells connected to an electronic device do not over-discharge, even when they are left unused for a long period of time. Thus, the battery unit can be prevented from deteriorating and shortening the life thereof.
摘要:
A battery control device includes a unit to measure a voltage of a battery, a unit to measure an electric current of the battery, and a control unit to calculate an open-circuit voltage of the battery based on the voltage and the electric current of the battery, and to calculate a battery residual quantity ratio of the battery by use of relative information and the calculated open-circuit voltage, wherein the control unit calculates a charge quantity ratio of the battery by subtracting a battery residual quantity ratio at charge ending time from a battery residual quantity ratio at charge starting time, calculates a value obtained by multiplying the charge quantity ratio by a correction coefficient as a charging-discharging count of the battery, and integrates the charging-discharging count each time the charging-discharging count is calculated.
摘要:
Provided is a control apparatus that controls a battery circuit, including a voltage detector that detects a battery voltage, a battery protection circuit that stops charging current when the battery voltage detected by the voltage detecting unit exceeds a protection voltage, and a charging circuit being capable of changing a charging current value for charging a battery. The control apparatus includes an input interface that reads the battery voltage detected by the voltage detecting unit, a decision unit that decides whether or not the read battery voltage has approached the protection voltage to a predetermined limit value, an output interface that outputs a signal for controlling the charging current, and a current control unit that limits the charging current to a predetermined limit value via the output interface when the read battery voltage is decided to have approached the protection voltage to the predetermined limit value.
摘要:
A battery control device comprises voltage measuring unit measuring a voltage of a battery, current measuring unit measuring an electric current of the battery, and power source control unit calculating an open-circuit voltage of the battery based on the voltage of the battery and the electric current of the battery, and calculating a battery residual quantity ratio of the battery by use of relative information and the calculated open-circuit voltage, wherein the power source control unit calculates a charge quantity ratio of the battery by subtracting a battery residual quantity ratio at charge ending time from a battery residual quantity ratio of the battery at charge starting time, calculates a value obtained in a way that multiplies the charge quantity ratio by a correction coefficient as a charging/discharging count of the battery, and integrates the charging/discharging count each time the charging/discharging count is calculated.