Rapid charging and power management of a battery-powered fluid analyte meter
First Claim
1. A battery-powered meter adapted to determine a temperature-sensitive fluid analyte concentration of a fluid sample, a determination of fluid analyte concentration by the meter having an approximated energy draw, the meter comprising:
- a housing defining an area for receiving a rechargeable battery and a port sized for receiving at least a portion of a test sensor; and
a microprocessor disposed within the housing, the microprocessor configured to implement a charge process associated with the rechargeable battery, the charge process comprising the acts of;
(i) monitoring the rechargeable battery for a remaining battery charge; and
(ii) in response to the remaining battery charge being below a predetermined charge value associated with completing up to approximately ten fluid analyte concentration tests based on the approximated energy draw, implementing a rapid charge routine for charging the rechargeable battery for one minute or less at a charge rate of 2 C or less,wherein implementing the rapid charge routine provides enough energy to the rechargeable battery to allow one or more analyte concentration determinations to be completed based on the approximated energy draw.
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Accused Products
Abstract
A system and method is described for rapid charging and power management of a battery for a meter. A charger component is operably associated with the meter and is capable of executing a rapid charge algorithm for a rechargeable battery. The algorithm includes monitoring for a connection to an external power source and implementing a charging routine of a battery at a first charge rate and then at a second charge rate. The second charge rate is lower than the first charge rate. A temperature rise in the rechargeable battery due to the first charge rate has a negligible heat transfer effect on the fluid sample. The meter can also include a power switch for controlling current flow to a battery fuel gauge. The power switch is open when the meter enters into a sleep mode. The state of battery charge is determined after the meter exits the sleep mode.
43 Citations
20 Claims
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1. A battery-powered meter adapted to determine a temperature-sensitive fluid analyte concentration of a fluid sample, a determination of fluid analyte concentration by the meter having an approximated energy draw, the meter comprising:
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a housing defining an area for receiving a rechargeable battery and a port sized for receiving at least a portion of a test sensor; and a microprocessor disposed within the housing, the microprocessor configured to implement a charge process associated with the rechargeable battery, the charge process comprising the acts of; (i) monitoring the rechargeable battery for a remaining battery charge; and (ii) in response to the remaining battery charge being below a predetermined charge value associated with completing up to approximately ten fluid analyte concentration tests based on the approximated energy draw, implementing a rapid charge routine for charging the rechargeable battery for one minute or less at a charge rate of 2 C or less, wherein implementing the rapid charge routine provides enough energy to the rechargeable battery to allow one or more analyte concentration determinations to be completed based on the approximated energy draw. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for rapidly charging a rechargeable battery of a meter configured to determine a blood glucose concentration of a fluid sample, the rechargeable battery and a microprocessor disposed within a housing of the meter, the determination of blood glucose concentration having an approximated energy draw, the rapid charging providing enough energy to the rechargeable battery based on the approximated energy draw to complete blood glucose concentration testing, the method comprising the acts of:
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monitoring the rechargeable battery for a remaining battery charge; and implementing, via the microprocessor, a rapid charge routine for charging the rechargeable battery for one minute or less at a charge rate of 2 C or less in response to the remaining battery charge being below a predetermined charge value associated with completing up to approximately ten blood glucose concentration tests based on the approximated energy draw, implementation of the rapid charge routine providing enough energy to the rechargeable battery to allow one or more blood glucose concentration tests to be completed, wherein the rapid charge routine causes a negligible temperature rise in the rechargeable battery thereby limiting temperature effects in determining blood glucose concentration. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification