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US 2003/0154040 A1Published application
Process to determine battery storage capacity
OwnerEberhard Nann, Christian Kuperinventors
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OwnerEberhard Nann, Christian Kuperinventors
Estimating the term…
The present invention concerns a process for the determination of charge capacity in a battery, especially the charge and/or aging status. The invention has the function of determining charge capacity in a battery, especially the charge and/or aging status without disconnecting the battery from the linked electrical system or without creating given operational phases. A process according to the invention for the determination of charge capacity (10) in an battery (12) especially the charge and/or aging status whereby at least the battery voltage (14), the battery current (16), and the battery temperature (18) are measured during the predetermined operation of the battery (12) with an electrical system (20) that is connected to the battery (12) and whereby through the electrical system (2) one of several exchangeable operational phases (22, 24, 26, 28, 30, and 32) are used and a calculation specification is selected for the calculation of the charge capacity determined from the measured values (34, 36, and 94) depending on the current operational phase (22, 24, 26, 28, 30, and 32) and calculates the appropriate charge capacity (34, 36, and 94) and updates from the previous operational phase (22, 24, 26, 28, 30, and 32) the determined charge capacity (34, 36, and 94). The electrical system can consist, for example, of the electrical array in an automobile or of an uninterruptible energy supply of a signaling device or such. In addition, a device (40) is suggested for the performance of the process according to the invention as well as a battery (12) with an indicated temperature sensor (76). Specific information is generated by the charge capacity (34, 36, and 94) that can be processed by a superior management system.
Process for the determination of charge capacity (10) of an battery (12) especially of the charge and/or aging status whereby at least the battery voltage (14), the battery current (16), and the battery temperature (18) are measured during a predetermined operation of the battery (12) in an electrical system (20) that is electrically connected and whereby through the electrical system (20) one or more exchangeable operational phases (22, 24, 26, 28, 30, and 32) are used and a calculator specification is selected for the calculation of the charge capacity to be determined from the measured values (34, 36, and 94) depending upon the current operational phase (22, 24, 26, 28, 30, and 32) and the appropriate charge capacity (34, 36, and 94) is calculated and the charge capacity (34, 36, and 94) that have been determined in an earlier operational phase (22, 24, 26, 28, 30, and 32) are updated accordingly.
Process according to one of the previous claims characterized by the fact that the measurements are unlimited and/or time discrete.
Process according to one of the previous claims characterized by the fact that the measurements of the battery current (16) and the battery voltage (14) take place simultaneously.
Process according to one of the previous claims characterized by the fact that different charge capacity (34, 36, and 94) is determined at different time periods.
Process according to one of the previous claims characterized by the fact that the period for the determination of a charge capacity (34, 36, and 94) depends on the required operational phase change necessary for the determination.
Process according to one of the previous claims characterized by the fact that process is used with an electrical system (20) of an automobile.
Process according to one of the previous claims characterized by the fact that the determined charge capacity (34, 36, and 94) and/or their measured values are displayed.
Process according to one of the previous claims characterized by the fact that the charge status (34) is determined by the idle condition U0.
Process according to one of the previous claims characterized by the fact that the charge capacity (34) is determined by the discharge through a medium current.
Process according to one of the previous claims characterized by the fact that the charge status (34) is determined by balancing a charge acceptance and a charge removal.
Process according to one of the previous claims characterized by the fact that the aging status (36) is determined by a high current discharge.
Process according to one of the previous claims characterized by the fact that the aging status (36) is determined by a start evaluation.
Device (40) for the determination of the charge capacity (34, 36, and 94) according to the process and the previous claims characterized by the fact that it includes at least one current measurement device (72) connected to an battery pole (70) capturing the entire electrical current (16) through an battery (12), voltage measurement device (74) capturing the battery voltage (14) and a temperature measurement device (78) capturing the battery temperature (18).
Dependencies are inferred from the claim text.