Rapid charging and power management of a battery-powered fluid analyte meter
First Claim
1. A battery-powered meter adapted to determine an analyte concentration of a fluid sample, 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;
a temperature sensor disposed within said housing; and
one or more processors disposed within said housing, at least one of said one or more processors configured to implement a rapid charge process associated with said rechargeable battery, said process comprising the acts of;
(i) monitoring for a connection to an external power source; and
(ii) in response to receiving identifying information of said connection to said external power source, implementing a charge routine for rapid charging of said battery at a first charge current until a threshold temperature value determined using said temperature sensor is exceeded and thereafter charging said battery at a second charge current that is lower than said first charge current,wherein implementation of said charge routine causes a negligible temperature rise in said rechargeable battery due to said first and second charge currents, thereby limiting temperature effects in determining fluid analyte concentrations.
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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.
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Citations
22 Claims
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1. A battery-powered meter adapted to determine an analyte concentration of a fluid sample, 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; a temperature sensor disposed within said housing; and one or more processors disposed within said housing, at least one of said one or more processors configured to implement a rapid charge process associated with said rechargeable battery, said process comprising the acts of; (i) monitoring for a connection to an external power source; and (ii) in response to receiving identifying information of said connection to said external power source, implementing a charge routine for rapid charging of said battery at a first charge current until a threshold temperature value determined using said temperature sensor is exceeded and thereafter charging said battery at a second charge current that is lower than said first charge current, wherein implementation of said charge routine causes a negligible temperature rise in said rechargeable battery due to said first and second charge currents, thereby limiting temperature effects in determining fluid analyte concentrations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of rapidly charging a battery in a meter having a port configured to receive at least a portion of a test sensor, said meter configured to determine a fluid analyte concentration of a fluid sample disposed on said test sensor, said method implemented on one or more processors associated with said meter, the method comprising the acts of:
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determining temperature values based on temperature data associated with a temperature sensor disposed within said meter; in response to receiving an input associated with a connection of the meter to an external power source, implementing a rapid charge routine via said one or more processors, said rapid charge routine operative to charge said battery at a first charge current until a threshold temperature value determined in said determining temperature values act is exceeded; in response to exceeding said threshold temperature value, implementing a normal charge routine via at least one of said one or more processors, said normal charge routine operative to charge said battery at a second charge current that is lower than said first charge current, wherein implementation of said rapid and normal charge routines causes negligible temperature rise in said battery due to said first and second charge currents, thereby limiting temperature effects in determining fluid analyte concentrations. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A battery-powered meter adapted to determine an analyte concentration of a fluid sample, 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 one or more processors disposed within said housing, at least one of said one or more processors configured to implement a rapid charge process associated with said rechargeable battery, said rapid charge process comprising the acts of; (i) monitoring said rechargeable battery for a remaining battery charge value that is less than a predetermined charge value; (ii) in response to receiving identifying information that said remaining battery charge value is less than the predetermined charge value, transmitting a signal for implementing a human perceptible alert; (iii) monitoring for a connection to an external power source; and (iv) in response to receiving identifying information of said connection to said external power source, implementing a charge routine for charging said rechargeable battery for less than about one minute at a charge rate of about 2C or less, wherein a determination of analyte concentration by said meter has an approximated energy draw, said implementation of said charge routine providing energy to said rechargeable battery to allow more than one analyte concentration determination to be completed based on said approximated energy draw, said charge routine further causing negligible temperature rise in said rechargeable battery, thereby limiting temperature effects in determining fluid analyte concentrations. - View Dependent Claims (21, 22)
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Specification