초록 ▼

A device for determining the charge status of a battery (4) when it is discharged by a load (RL) and/or when it is charged by a power-supply circuit (1) in which a value representing the nominal charging time and discharging time respectively is stored in first (10) and second adjusting means (11) r

A device for determining the charge status of a battery (4) when it is discharged by a load (RL) and/or when it is charged by a power-supply circuit (1) in which a value representing the nominal charging time and discharging time respectively is stored in first (10) and second adjusting means (11) respectively and is applied to computing means (12). In response to clock pulses applied to the computing means by a clock means (13), the computing means calculate the charge status of the battery by expressing the elapsed discharging or charging time as a fraction of the adjusted discharging time and charging time respectively. The computed charge status is indicated by indicator means (14). During discharging and charging an actual charge status is detected by first (7) and second (16) detection means. In the case of a difference between the computed and the actual charge status, correction means (15) corrects the computed charge status and the value stored in the adjusting means (10, 11) is updated so that during a subsequent discharging or charging cycle the computed charge status conforms more closely to the actual charge status.

대표청구항 ▼

A device for indicating the charge status of a battery during charging and/or discharging, comprising: a power-supply circuit for charging the battery and/or energizing a load; means for generating pulses during charging and/or discharging of the battery; computing means for computing the charge sta

A device for indicating the charge status of a battery during charging and/or discharging, comprising: a power-supply circuit for charging the battery and/or energizing a load; means for generating pulses during charging and/or discharging of the battery; computing means for computing the charge status on the basis of the generated pulses, and indicator means for indicating the computed charge status, characterized in that the means for generating pulses comprise clock means for generating clock pulses, the computing means comprise: first adjusting means for adjusting a discharging time of the battery to a first value during discharging of the battery by the load and/or second adjusting means for adjusting a charging time of the battery to a second value during charging of the battery by the power-supply circuit under no-load condition, and time-measuring means for determining, on the basis of the generated clock pulses, at least one of the following ratios, the ratio between the elapsed discharging time and the adjusted discharging time and the ratio between the elapsed charging time and the adjusted charging time, which ratios represent the calculated charge status, wherein the device further comprises: detection means for detecting at least one actual charge status of the battery during discharging and/or charging of the battery, correction means for correcting the computed charge status and for correcting at least one of said first and second values of the first and second adjusting means, respectively, when a difference occurs between said at least one actual charge status detected by the detection means and the computed charge status at the instant of detection, and control means for controlling the adjusting means and time-measuring means.