Uneven load mitigation in a mobile computing device having multiple power storage devices
An example foldable mobile computing device includes a first side including a first power storage device coupled to a first regulator. The device includes a second side including a second power storage device coupled to a second regulator and connected in parallel with the first power storage device. The second side is configured to articulate relative to the first side about a hinge. The device includes processing circuitry configured to determine a power storage capacity of the first power storage device and to determine a power storage capacity of the second power storage device. The device is also configured to adjust, based on the power storage capacity of the first power storage device and the power storage capacity of the second power storage device, at least one of an impedance of the first regulator or an impedance of the second regulator.
1. A foldable mobile computing device comprising:
a first side comprising a first power storage device coupled to a first regulator;
a second side comprising a second power storage device coupled to a second regulator and connected in parallel with the first power storage device, the second side configured to articulate relative to the first side about a hinge;
a system load including a single folding display spanning the first side and the second side, the system load operating using electrical energy received from a combination of the first regulator and the second regulator; and
processing circuitry configured to:
measure a power storage capacity of the first power storage device;
measure a power storage capacity of the second power storage device; and
adjust, based on the measured power storage capacity of the first power storage device and the measured power storage capacity of the second power storage device, at least one of an impedance of the first regulator or an impedance of the second regulator, wherein a physical size of the first power storage device is different than a physical size of the second power storage device.
2. The foldable mobile computing device of claim 1 , wherein the power storage capacity of the first power storage device is different than the power storage capacity of the second power storage device.
3. The foldable mobile computing device of claim 1 , wherein the processing circuitry is further configured to:
determine an impedance of the first power storage device;
determine an impedance of the second power storage device;
determine an additional impedance; and
adjust the at least one of the impedance of the first regulator or the impedance of the second regulator further based on the impedance of the first power storage device, the impedance of the second power storage device, and the additional impedance.
4. The foldable mobile computing device of claim 3 , further comprising at least one component that is different than the first power storage device and the second power storage device, wherein the additional impedance comprises an impedance of the at least one component.
5. The foldable mobile computing device of claim 4 , wherein the at least one component comprises a flexible printed circuit (FPC) configured to transfer electrical power from the first side to the second side.
6. The foldable mobile computing device of claim 3 , wherein the processing circuitry comprises at least one battery monitoring integrated circuit that is different than an application processor of the foldable mobile computing device, wherein the at least one battery monitoring integrated circuit is configured to determine the impedance of the first power storage device, and determine the impedance of the second power storage device.
7. The foldable mobile computing device of claim 3 , wherein the processing circuitry is configured to adjust the at least one of the impedance of the first regulator or the impedance of the second regulator such that a sum of the impedance of the first power storage device, the additional impedance, and the impedance of the first regulator divided by the sum of the impedance of the second power storage device and the impedance of the second regulator is equal to the power storage capacity of the second power storage device divided by the power storage capacity of the first power storage device.
8. The foldable mobile computing device of claim 1 , wherein the processing circuitry is further configured to:
determine a state-of-charge (SOC) of the first power storage device;
determine an SOC of the second power storage device;
determine an SOC gap between the SOC of the first power storage device and the SOC of the second power storage device; and
determine whether the SOC gap exceeds a predetermined threshold,
adjust, responsive to determining that the SOC gap exceeds the predetermined threshold, the at least one of the impedance of the first regulator or the impedance of the second regulator.
9. The foldable mobile computing device of claim 1 , wherein the processing circuitry is further configured to:
determine an aging level of at least one of the first power storage device or the second power storage device; and
adjust the at least one of the impedance of the first regulator or the impedance of the second regulator further based on the determined aging level.
10. The foldable mobile computing device of claim 1 , wherein the processing circuitry is further configured to:
determine a temperature of the foldable mobile computing device; and
adjust the at least one of the impedance of the first regulator or the impedance of the second regulator further based on the determined temperature.
11. A method comprising:
measuring, by processing circuitry, a power storage capacity of a first power storage device located in a first side of a foldable mobile computing device;
measuring, by the processing circuitry, a power storage capacity of a second power storage device located in a second side of the foldable mobile computing device, the second side being configured to articulate relative to the first side about a hinge, wherein a physical size of the first power storage device is different than a physical size of the second power storage device;
adjusting, by the processing circuitry and based on the power storage capacity of the first power storage device and the power storage capacity of the second power storage device, at least one of an impedance of a first regulator coupled to the first power storage device or an impedance of a second regulator coupled to the second power storage device; and
operating, using electrical energy received from a combination of the first regulator and the second regulator, a system load including a single folding display spanning the first side and the second side.
12. The method of claim 11 , wherein the power storage capacity of the first power storage device is different than the power storage capacity of the second power storage device.
13. The method of claim 11 , further comprising:
determining, by the processing circuitry, an impedance of the first power storage device;
determining, by the processing circuitry, an impedance of the second power storage device;
determining, by the processing circuitry, an additional impedance; and
adjusting, by the processing circuitry and based on the impedance of the first power storage device, the impedance of the second power storage device, and an additional impedance, the at least one of the impedance of the first regulator or the impedance of the second regulator.
14. The method of claim 13 , wherein the foldable mobile computing device comprises at least one component that is different than the first power storage device and the second power storage device, wherein the additional impedance comprises an impedance of the at least one component.
15. The method of claim 14 , wherein the at least one component comprises a flexible printed circuit (FPC) configured to transfer electrical power from the first side to the second side.
16. The method of any combination of claim 13 , wherein the processing circuitry comprises at least one battery monitoring integrated circuit that is different than an application processor of the foldable mobile computing device, and wherein the at least one battery monitoring integrated circuit determines the impedance of the first power storage device and the impedance of the second power storage device.
17. The method of claim 13 , wherein adjusting, by the processing circuitry, the at least one of the impedance of the first regulator or the impedance of the second regulator comprises adjusting the at least one of the impedance of the first regulator or the impedance of the second regulator such that a sum of the impedance of the first power storage device, the additional impedance, and the impedance of the first regulator divided by the sum of the impedance of the second power storage device and the impedance of the second regulator is equal to the power storage capacity of the second power storage device divided by the power storage capacity of the first power storage device.
18. The method of claim 11 , further comprising:
determining, by the processing circuitry, a state-of-charge (SOC) of the first power storage device;
determining, by the processing circuitry, an SOC of the second power storage device;
determining, by the processing circuitry, an SOC gap between the SOC of the first power storage device and the SOC of the second power storage device; and
determining, by the processing circuitry, whether the SOC gap exceeds a predetermined threshold,
adjusting, by the processing circuitry and responsive to determining that the SOC gap exceeds the predetermined threshold, the at least one of the impedance of the first regulator or the impedance of the second regulator.
19. The method of claim 11 , further comprising:
determining an aging level of at least one of the first power storage device or the second power storage device; and
adjusting, by the processing circuitry and based on the determined aging level, the at least one of the impedance of the first regulator or the impedance of the second regulator.
20. A foldable mobile computing device comprising:
a first side comprising a first power storage device coupled to a first regulator;
a second side comprising a second power storage device coupled to a second regulator and connected in parallel with the first power storage device, the second side configured to articulate relative to the first side about a hinge, wherein a physical size of the first power storage device is different than a physical size of the second power storage device;
means for measuring a power storage capacity of the first power storage device;
means for measuring a power storage capacity of the second power storage device;
means for adjusting, based on the power storage capacity of the first power storage device and the power storage capacity of the second power storage device, at least one of an impedance of the first regulator or an impedance of the second regulator; and
means for operating, using electrical energy received from a combination of the first regulator and the second regulator, a system load including a single folding display spanning the first side and the second side.