System and method of intelligently allocating power
A method of intelligently allocating power to one or more devices connected to a power delivery system includes detecting an event related to an allocation of power between the one or more connected devices. The method further includes maximizing an initial non-power delivery (non-PD) power provided to at least one of the connected devices based on an available shared capacity (ASC) associated with at least one connected device and also includes allocating power to the at least one connected device using PD protocols.
1. A method of intelligently allocating power to one or more devices connected to a power delivery system, the method comprising:
detecting an event related to an allocation of power between the one or more connected devices;
maximizing an initial delivery of power to the one or more connected devices without using power delivery protocols during a first stage, the power delivery protocols including a power request communication between the one or more devices and the power delivery system, wherein the initial delivery of power is provided to the one or more connected devices based on an available shared capacity (ASC) associated with the one or more connected devices; and
allocating power to the one or more connected devices using the power delivery protocols during a second stage,
wherein maximizing the initial delivery of power includes comparing the available shared capacity (ASC) associated with at least one connected device to a first threshold.
2. The method of claim 1 , wherein detecting an event related to an allocation of power between the one or more connected devices includes detecting a device being attached/detached from the power delivery system.
3. The method of claim 1 , wherein detecting an event related to an allocation of power between one or more connected devices includes detecting a change in total shared capacity (TSC) of the power delivery system.
4. The method of claim 3 , wherein detecting a change in total shared capacity (TSC) of the power delivery system includes monitoring one or more of ambient temperature, steady state voltage provided to the power delivery system, and steady state current provided to the power delivery system.
5. The method of claim 1 , wherein detecting an event related to an allocation of power between one or more connected devices includes detecting a change in available shared capacity (ASC) associated with one or more connected devices.
6. The method of claim 5 , wherein detecting a change in ASC associated with one or more connected devices includes one or more of a detected capability mis-match between the power delivery system and the one or more connected devices, a state of charge associated with the one or more of the connected devices, a change in power consumption associated with the one or more of the connected devices, an over-current condition, a power give back associated with the one or more of the connected devices, and a change in total shared capacity (TSC).
7. The method of claim 1 , wherein if the ASC is greater than or equal to the first threshold then the power delivery system provides a desired minimum power to the at least one connected device, wherein the desired minimum power is greater than a minimum reserved power.
8. The method of claim 7 , wherein the desired minimum power is equal to or greater than 15 W and wherein the minimum reserved power is less than 15 W.
9. The method of claim 7 , wherein if the ASC is less than the first threshold then a total shared capacity (TSC) of the power delivery system is compared to a second threshold, wherein if the TSC is greater than or equal to the second threshold then the power delivery system provides decreases power provided to one or more other connected devices and the power delivery system provides the desired minimum threshold power to the at least one connected device.
10. The method of claim 9 , wherein the second threshold is greater than the first threshold.
11. The method of claim 9 , wherein if the TSC is less than the second threshold then the power delivery system provides a minimum reserve power to the at least one connected device, wherein the minimum reserve power is less than the desired minimum threshold power.
12. The method of claim 7 , wherein allocating power to the at least one connected device using the power delivery protocols during the second stage is performed subsequent to the first stage, wherein allocating power to the at least one connected device using the power delivery protocols allows the power delivery system to provide power to the at least one connected device greater than a desired minimum threshold power.
13. A power delivery system comprising:
an input port configured to receive power from a power supply;
at least a first output port, wherein the first output port is configured to supply power to a connected device; and
a power delivery controller, wherein the power delivery controller maximizes an initial delivery of power to the connected device without using power delivery protocols, the power delivery protocols including a power request communication between the connected device and the power delivery controller, wherein the initial delivery of power is provided to the connected device connected to the first output port during a first stage, and wherein the power delivery controller utilizes the power delivery protocols to increase power provided to the connected device connected to the first output port during a second stage,
wherein maximizing the initial delivery of power includes comparing the available shared capacity (ASC) associated with at least one connected device to a first threshold.
14. The power delivery system of claim 13 , wherein the power delivery controller initiates the first stage in response to at least one of detected attachment/detachment of devices from the first output port, detected changes in total shared capacity (TSC) of power available to distribute to the first output port, and detected changes in available shared capacity (ASC) associated with the first output port.
15. The power delivery system of claim 14 , wherein the power delivery controller calculates the TSC based on one or more of monitored ambient temperature, steady state voltage provided to the input port, and steady state current provided to the input port.
16. The power delivery system of claim 14 , wherein during the first stage the power delivery controller compares an available shared capacity (ASC) associated with a first output port to a first threshold, wherein if the ASC associated with the first output port is greater than or equal to the first threshold then the power delivery controller offers a desired minimum power to the device connected to the first output port.
17. The power delivery system of claim 16 , wherein if the ASC associated with the first output port is less than the first threshold, then the power delivery controller compares a total shared capacity (TSC) of the power delivery system to a second threshold, wherein if the TSC is greater than or equal to the second threshold then the power delivery controller decreases power provided to a device connected to a second output port and offers the desired minimum power to the device connected to the first output port.
18. The power delivery system of claim 17 , wherein if the TSC is less than the second threshold then the power delivery controller offers the device connected to the first output port a minimum reserve power, wherein the minimum reserve power is less than the desired minimum power.
19. The power delivery system of claim 13 , wherein power delivery protocols utilized during the second stage allows the power delivery controller to increase power provided to the device connected to the first output port, wherein the power is greater than a desired minimum threshold power provided during the first stage.
20. The power delivery system of claim 13 , wherein the power delivery system is a vehicular power delivery system connected to receive input power from a vehicle battery.