Dynamic current redistribution for portable electronic devices
First Claim
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1. A device, comprising:
- a battery;
at least one memory storing computer-executable instructions; and
at least one processing unit configured to access the at least one memory and execute the computer-executable instructions to;
determine a first current received from an external power source;
determine a second current consumed by the device;
determine a third current being used for charging the battery;
determine that an external power storage device is coupled to the device;
determine a fourth current for charging the external power storage device, the fourth current being substantially equal to a difference between the first current and a sum of the second current and the third current;
provide the fourth current to the external power storage device;
determine that the external power source is disconnected;
cause the battery to provide the second current;
determine that the battery is discharged to a first threshold level that is less than fully charged;
in response to determining that the battery is discharged to the first threshold level, cause the external power storage device to provide a first output current to the device, wherein the first output current is at least equal to the second current;
determine that the sum of the second current and the third current is greater than the first output current; and
cause the external power storage device to provide a second output current to the device, wherein the second output current is at least equal to the sum of the second current and the third current.
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Abstract
Method and systems for dynamic current redistribution in electronic devices with external power storage devices are disclosed. The dynamic current redistribution system includes a set of policies for each state of the electronic device. Depending on a device state, the system identifies the policies to be put in place, and directs current according to the policies. The electronic device may be connected to an external power source in one state, an external battery device in another state, and may be connected to both in a third state.
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Citations
18 Claims
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1. A device, comprising:
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a battery; at least one memory storing computer-executable instructions; and at least one processing unit configured to access the at least one memory and execute the computer-executable instructions to; determine a first current received from an external power source; determine a second current consumed by the device; determine a third current being used for charging the battery; determine that an external power storage device is coupled to the device; determine a fourth current for charging the external power storage device, the fourth current being substantially equal to a difference between the first current and a sum of the second current and the third current; provide the fourth current to the external power storage device; determine that the external power source is disconnected; cause the battery to provide the second current; determine that the battery is discharged to a first threshold level that is less than fully charged; in response to determining that the battery is discharged to the first threshold level, cause the external power storage device to provide a first output current to the device, wherein the first output current is at least equal to the second current; determine that the sum of the second current and the third current is greater than the first output current; and cause the external power storage device to provide a second output current to the device, wherein the second output current is at least equal to the sum of the second current and the third current. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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an electronic device comprising a first processing unit, a first battery configured to provide power to the first processing unit, and at least one memory storing computer-executable instructions; and an external power storage device electrically coupled to the electronic device; wherein the first processing unit is configured to access the at least one memory and execute the computer-executable instructions to; determine that an external power source is providing a first current to the electronic device; determine a second current consumed by the electronic device; determine a third current being used for charging the first battery; determine a first charging current for the external power storage device, the first charging current being substantially equal to a first difference between the first current and a sum of the second current and the third current; provide the first charging current to the external power storage device; determine that the first battery is fully charged; in response to determining that the first battery is fully charged, provide a second charging current to the external power storage device, wherein the second charging current is greater than the first charging current; determine that the external power source is disconnected from the electronic device; determine that the first battery is discharged to a first threshold level; cause the external power storage device to provide a first output current to the electronic device, wherein the first output current is at least equal to the second current; determine that the sum of the second current and the third current is greater than the first output current; cause the external power storage device to provide a second output current to the electronic device, wherein the second output current is at least equal to the sum of the second current and the third current; and cause the external power storage device to charge the first battery from the first threshold level to a second threshold level that is less than fully charged and to disable charging of the first battery upon reaching the second threshold level. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A device comprising:
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an internal battery; at least one memory storing computer-executable instructions; and at least one processor configured to access the at least one memory and execute the computer-executable instructions to; determine that a power adapter is connected to the device; charge the internal battery at a first charging current value using current from the power adapter; determine that an external battery is connected to the device; determine that the power adapter is disconnected; determine that a first charge level of the external battery is greater than a second charge level of the internal battery; cause the internal battery to power the device; determine that the internal battery is discharged to a third charge level; in response to determining that the internal battery is discharged to the third charge level, cause the external battery to provide a first output current to power the device, wherein the first output current is at least equal to a system current consumed by the device; determine that a sum of a maximum charging current for the internal battery and the system current is greater than the first output current; and cause the external battery to provide a second output current to the device, wherein the second output current is at least equal to the sum of the maximum charging current and the system current. - View Dependent Claims (16, 17, 18)
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Specification