Battery monitor and cycle status indicator
First Claim
1. A battery monitor for monitoring a battery to determine battery state-of-charge and battery history, comprising:
- means for sensing battery voltage level and providing a signal representative of the sensed voltage level; and
means for processing the signal representative of the sensed voltage level and stored battery voltage values to determine battery history as a function of changes in the sensed battery voltage level compared to stored battery voltage values.
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Accused Products
Abstract
A battery monitor and cycle status indicator is disclosed. The battery monitor includes a voltage sensor capable of sensing the voltage between two nodes, for example, the positive and negative terminals of a battery. The voltage sensor is connected to an analog-to-digital converter which converts the analog voltage level sensed by the voltage sensor to a digital form. In turn, the analog-to-digital converter is coupled to a microprocessor. The microprocessor determines battery state-of-charge and historical values that relate to battery condition based upon the voltage levels provided by the analog-to-digital converter. The microprocessor is also coupled to a memory which stores battery history values computed by the microprocessor and program instructions for operation of the microprocessor. The battery monitor also includes a display that is capable of displaying battery state-of-charge and the historical values determined by the microprocessor. A switch is coupled to the microprocessor to inform the microprocessor to clear the history values presently stored in memory or to scroll the display from one battery parameter or history value to the next. The switch also enables the adjustment of the battery parameters that are stored in the memory to user-defined levels.
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Citations
38 Claims
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1. A battery monitor for monitoring a battery to determine battery state-of-charge and battery history, comprising:
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means for sensing battery voltage level and providing a signal representative of the sensed voltage level; and means for processing the signal representative of the sensed voltage level and stored battery voltage values to determine battery history as a function of changes in the sensed battery voltage level compared to stored battery voltage values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A battery monitor for determining and displaying battery history, comprising:
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a voltage sensor for sensing the battery voltage across positive and negative terminals of the battery; an analog-to-digital converter coupled to the voltage sensor for converting the voltage sensed by the voltage sensor to a digital representation of battery voltage; a microprocessor coupled to the analog-to-digital converter, the microprocessor operating responsive to stored program instructions and battery voltage parameter values for determining battery history data based upon changes in battery voltage, and supplying signals representative of the battery history data; a memory coupled to the microprocessor for storing the program instructions for operating the microprocessor, the parameter values for use by the microprocessor in determining the battery history data, and the battery history data; and a display coupled to the microprocessor for displaying battery history data. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification