Combining power from a battery and an AC-DC converter of a power storage adapter
First Claim
1. A power storage adapter (PSA), comprising:
- a port for coupling the power storage adapter to a variable power bus;
a battery;
an AC-DC converter having a maximum power supply capacity;
a battery management unit comprising an adjustable DC-DC voltage converter to adjust an output voltage of the battery to a desired output voltage; and
a PSA controller, wherein the PSA controller comprises circuitry to, when the AC-DC converter is coupled to AC line power and a power consuming device is coupled to the power storage adapter over the variable power bus through the port;
determine a first power level at which electrical power will be consumed by the power consuming device when operating in a particular operating mode of a plurality of operating modes, each operating mode having respective performance or power consumption characteristics;
determine that the first power level exceeds the maximum power supply capacity of the AC-DC converter;
provide an indication to the battery management unit that electrical power supplied by the AC-DC converter and electrical power supplied by the battery are to be supplied simultaneously to the power consuming device, wherein a combined output power equal to a sum of electrical power supplied by the AC-DC converter and electrical power supplied by the battery is greater than or equal to the first power level;
wherein the battery management unit comprises circuitry to;
generate the combined output power in response to receiving the indication; and
supply the combined output power to the power consuming device over the variable power bus.
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Accused Products
Abstract
An external power storage adapter (PSA) may supply electrical power to a portable information handling system or other power consuming device. The power storage adapter may include an AC-DC converter, a battery, and intelligent power management functionality. A PSA controller may cause a PSA battery management unit to combine electrical power supplied by the AC-DC converter and electrical power supplied by the battery in order to supply enough electrical power for the information handling system to operate in a particular operating mode. The power storage adapter may output power to a port of the portable information handling system, such as a USB Type-C port, over a variable power bus. The maximum power supply capacity of the power storage adapter, when the battery is at least partially charged, may be greater than the maximum power supply capacity of the AC-DC converter alone.
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Citations
20 Claims
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1. A power storage adapter (PSA), comprising:
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a port for coupling the power storage adapter to a variable power bus; a battery; an AC-DC converter having a maximum power supply capacity; a battery management unit comprising an adjustable DC-DC voltage converter to adjust an output voltage of the battery to a desired output voltage; and a PSA controller, wherein the PSA controller comprises circuitry to, when the AC-DC converter is coupled to AC line power and a power consuming device is coupled to the power storage adapter over the variable power bus through the port; determine a first power level at which electrical power will be consumed by the power consuming device when operating in a particular operating mode of a plurality of operating modes, each operating mode having respective performance or power consumption characteristics; determine that the first power level exceeds the maximum power supply capacity of the AC-DC converter; provide an indication to the battery management unit that electrical power supplied by the AC-DC converter and electrical power supplied by the battery are to be supplied simultaneously to the power consuming device, wherein a combined output power equal to a sum of electrical power supplied by the AC-DC converter and electrical power supplied by the battery is greater than or equal to the first power level; wherein the battery management unit comprises circuitry to; generate the combined output power in response to receiving the indication; and supply the combined output power to the power consuming device over the variable power bus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for supplying electrical power to a power consuming device, comprising:
when an AC-DC converter within a power storage adapter (PSA) is coupled to AC line power and a power consuming device is coupled to the power storage adapter over a variable power bus; determining a first power level at which electrical power will be consumed by the power consuming device when operating in a particular operating mode of a plurality of operating modes, each operating mode having respective performance or power consumption characteristics; determining that the first power level exceeds a maximum power supply capacity of the AC-DC converter; providing an indication to a battery management unit within the power storage adapter that electrical power supplied by the AC-DC converter and electrical power supplied by a battery within the power storage adapter are to be supplied simultaneously to the power consuming device, wherein a combined output power equal to a sum of electrical power supplied by the AC-DC converter and electrical power supplied by the battery is greater than or equal to the first power level; generating the combined output power in response to receiving the indication; and supplying the combined output power to the power consuming device over the variable power bus. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A system, comprising:
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an information handling system including a port for coupling the information handling system to a variable power bus; and a power storage adapter (PSA) comprising; a port for coupling the power storage adapter to the information handling system over the variable power bus; a battery; an AC-DC converter having a maximum power supply capacity; a battery management unit comprising an adjustable DC-DC voltage converter to adjust an output voltage of the battery to a desired output voltage; and a PSA controller, wherein the PSA controller comprises circuitry to, when the AC-DC converter is coupled to AC line power and the information handling system is coupled to the power storage adapter over the variable power bus through the port; determine a first power level at which electrical power will be consumed by the information handling system when operating in a particular operating mode of a plurality of operating modes, each operating mode having respective performance or power consumption characteristics; determine that the first power level exceeds the maximum power supply capacity of the AC-DC converter; provide an indication to the battery management unit that electrical power supplied by the AC-DC converter and electrical power supplied by the battery are to be supplied simultaneously to the information handling system, wherein a combined output power equal to a sum of electrical power supplied by the AC-DC converter and electrical power supplied by the battery is greater than or equal to the first power level; wherein the battery management unit comprises circuitry to; generate the combined output power in response to receiving the indication; and supply the combined output power to the power consuming device over the variable power bus. - View Dependent Claims (19, 20)
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Specification