Device with integrated wireless power receiver configured to make a charging determination based on a level of battery life and charging efficiency
First Claim
1. An integrated circuit (IC) for using a device, the IC comprises:
- a processing module configured to;
generate a control signal based on desired electromagnetic properties of a received magnetic field and an integrated power receive circuit;
provide the control signal to the integrated power receive circuit, wherein the control signal serves to tune the integrated power receive circuit;
determine a level of a battery that includes an amount of battery life left;
determine a charging efficiency for the received magnetic field;
analyze the determined level of the battery and the determined charging efficiency to make a charging determination, the charging determination based, at least in part, on a comparison of the determined level of the battery and the determined charging efficiency on a sliding scale basis, wherein for a given determined level of the battery a minimum pre-defined charging efficiency is indicated by the sliding scale basis, the value of the minimum pre-defined charging efficiency generally decreasing as the value of the given determined level of the battery decreases, and wherein the charging determination indicates that the battery is to be charged when the determined charging efficiency at least meets the minimum pre-defined charging efficiency corresponding to the determined level of the battery;
generate a battery charger control signal based on the charging determination, wherein the battery charger control signal is configured to cause charging of the battery in a first mode and decoupling of the battery from a battery charger in a second mode; and
provide the battery charger control signal to the battery charger to effect the first mode or the second mode.
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Accused Products
Abstract
A device includes an integrated power receive circuit, a battery charger, a battery, a processing module, one or more input/output modules, and one or more circuit modules. The integrated power receive circuit is operable to generate a DC voltage from a received magnetic field in accordance with a control signal. The battery charger is operable to convert the DC voltage into a battery charge voltage. The battery is coupled to the battery charger in a first mode and is coupled to supply power in a second mode. The processing module is operable to: generate the control signal based on desired electromagnetic properties of at least one of the received magnetic field and the integrated power receive circuit; process outbound data to produce processed outbound data; and process inbound data to produce processed inbound data.
290 Citations
20 Claims
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1. An integrated circuit (IC) for using a device, the IC comprises:
a processing module configured to; generate a control signal based on desired electromagnetic properties of a received magnetic field and an integrated power receive circuit; provide the control signal to the integrated power receive circuit, wherein the control signal serves to tune the integrated power receive circuit; determine a level of a battery that includes an amount of battery life left; determine a charging efficiency for the received magnetic field; analyze the determined level of the battery and the determined charging efficiency to make a charging determination, the charging determination based, at least in part, on a comparison of the determined level of the battery and the determined charging efficiency on a sliding scale basis, wherein for a given determined level of the battery a minimum pre-defined charging efficiency is indicated by the sliding scale basis, the value of the minimum pre-defined charging efficiency generally decreasing as the value of the given determined level of the battery decreases, and wherein the charging determination indicates that the battery is to be charged when the determined charging efficiency at least meets the minimum pre-defined charging efficiency corresponding to the determined level of the battery; generate a battery charger control signal based on the charging determination, wherein the battery charger control signal is configured to cause charging of the battery in a first mode and decoupling of the battery from a battery charger in a second mode; and provide the battery charger control signal to the battery charger to effect the first mode or the second mode. - View Dependent Claims (2, 3, 4, 5)
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6. A device comprises:
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an integrated power receive circuit configured to generate a DC voltage from a received magnetic field, the integrated power receive circuit tuned with a control signal relating to desired electromagnetic properties of the received magnetic field; a battery charger configured to convert the DC voltage into a battery charge voltage, the battery charger configured to be coupled to a battery in a first mode and decoupled from the battery in a second mode; and a processing module configured to; generate the control signal to tune the integrated power receive circuit based on the desired electromagnetic properties of the received magnetic field and the integrated power receive circuit; determine a level of the battery that includes an amount of battery life left based on a battery type; determine a charging efficiency for the received magnetic field; analyze the determined level of the battery and the determined charging efficiency to make a charging determination, the charging determination based, at least in part, on a comparison of the determined level of the battery and the determined charging efficiency on a sliding scale basis, wherein for a given determined level of the battery a minimum pre-defined charging efficiency is established by the sliding scale basis, the value of the minimum pre-defined charging efficiency generally decreasing as the value of the given determined level of the battery decreases, and wherein the charging determination indicates that the battery is to be charged when the determined charging efficiency at least meets the minimum pre-defined charging efficiency corresponding to the determined level of the battery; generate a battery charging control signal based on the charging determination; and provide the battery charging control signal to the battery charger to effect either of the first mode or the second mode, wherein in the first mode the battery charging control signal functions to regulate charging of the battery based on the level of the battery, and wherein the battery is not charged in the second mode. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A device comprises:
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a coil configured to convert a magnetic field into an AC voltage, wherein a wireless power transmit unit generates the magnetic field; a capacitor coupled to the coil; a rectifying circuit configured to convert the AC voltage into a DC rail voltage; a DC to DC converter configured to convert the DC rail voltage into a DC voltage in accordance with a DC to DC converter control signal, the DC to DC converter configured to selectively couple a battery to be charged by the DC voltage and decouple the battery; and a processing module configured to; generate a control signal based on desired electromagnetic properties; send the control signal to the coil and the capacitor, wherein the at least one of the coil and the capacitor are tuned in accordance with the control signal; determine a level of the battery that includes an amount of remaining battery life; determine a charging efficiency relating to the magnetic field; generate a battery charger control signal to effect a mode of a plurality of modes based on the level of the battery and the battery charging efficiency, wherein the plurality of modes including coupling of the DC voltage to the battery to be charged in a first mode, and decoupling of the DC voltage from the battery to supply power in a second mode, wherein selection of the first mode or the second mode is based on a comparison of the determined level of the battery and the determined charging efficiency on a sliding scale basis, wherein for a given determined level of the battery a minimum pre-defined charging efficiency is established by the sliding scale basis, the value of the minimum pre-defined charging efficiency generally decreasing as the value of the given determined level of the battery decreases, and wherein the first mode is selected when the determined charging efficiency at least meets the minimum pre-defined charging efficiency corresponding to the determined level of the battery; and generate the DC to DC converter control signal to achieve a desired voltage for the DC voltage; and one or more input/output modules configured to at least one of; route outbound data from the processing module to a peripheral output component;
orroute inbound data from a peripheral input component to the processing module. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification