Abstract: A method and system for generating a secure random seed uses chemical processes in a battery of an information handling system as an entropy source for randomness. The secure random seed may be used by a pseudo-random number generator to create a secure pseudorandom bit stream usable to generate secure encryption keys.

Abstract: A power storage adapter may use a method for power delivery based on temperature and other factors. In particular, when electrical power is being supplied to a portable information handling system, a temperature of the power storage adapter may increase. Power storage adapter may reduce the electrical power being supplied to the portable information handling system based on the temperature to prevent the power storage adapter from potentially overheating.

Abstract: A variable power bus cable, such as a USB Type-C cable, is validated for actual current capacity with respect to a specified power rating for the cable. The power cable validation is performed when the cable is connected to a power storage adapter and a portable information handling system.

Abstract: A multilayer thermal laminate with aerogel is used for a battery cell enclosure to improve thermal properties and to reduce thermal inhomogeneity in the form of localized hotspots that exceed a desired rated temperature, thereby enabling a more compact design within rated thermal design limits for a given electrical performance.

Abstract: A power storage adapter may include wireless power units for wireless power transmission of multiple portable information handling systems. In particular, when a wireless power unit wirelessly transmits a first wireless power to one of the portable information handling systems, another wireless power unit may wirelessly transmit a second wireless power to another portable information handling system. The transmission of the first wireless power may be simultaneous with the transmission of the second wireless power.

Abstract: A power adapter device may use a method for efficient charging of multiple portable information handling systems based on learned charging characteristics. In particular, when electrical power is delivered to at least one of the portable information handling systems, the power adapter device may prioritize electrical power delivery to another portable information handling system ahead of the portable information handling systems based on the learned charging characteristics such that charging is efficient.

Abstract: A power storage adapter (PSA) may be connected to multiple battery-powered devices. A PSA controller may be configured to receive respective requests to supply electrical power to a first device and a second device, to determine that the power storage adapter does not have sufficient power supply capacity to satisfy both requests, to determine that a respective state of charge (SOC) of at least one device battery is below a first battery SOC threshold, and to prioritize supplying electrical power to a selected one of the devices at the expense of the other device based on a battery charging prioritization policy. The selected device may be prioritized until the battery SOC exceeds a battery SOC threshold or for a predetermined time period. The battery charging prioritization policy may specify relative charging priorities for the device batteries and a PSA battery dependent on whether AC line power is available.

Abstract: A power storage adapter may use a method for efficient supply of power of multiple portable information handling systems. In particular, when electrical power is delivered from a battery to at least one of the portable information handling systems, the power storage adapter may deliver electrical power from the battery to another portable information handling system when the battery has sufficient battery capacity such that the power is supplied efficiently.

Abstract: An information handling system may include a main processor, a battery, multiple temperature sensors for obtaining temperature values associated with the battery, a processor, and memory media accessible to the processor. The memory media may store instructions executable by the processor for receiving a respective temperature value from each of the temperature sensors and calculating a battery temperature distribution value dependent on the received temperature values, including determining a difference between two temperature values. The instructions may be further executable for determining a respective value for each of one or more battery control parameters dependent on the battery temperature distribution value, and setting each of the battery control parameters to the determined value.

Abstract: A power storage adapter may use a high efficiency charging method when supplying electrical power to a portable information handling system when the power storage adapter is not connected to AC line power. In particular, when the portable information handling system draws the electrical power below a low load threshold, such as during a low power state, the power storage adapter may avoid supplying electrical power. When an internal battery of the portable information handling system has an SOC less than a recharging state of charge for the internally battery, the power storage adapter may resume supplying power to the portable information handling system.

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.

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.

Abstract: A power storage adapter may use a peak shift operation method when supplying electrical power from an AC line power source to a portable information handling system and the power storage adapter receives an indication of a peak shift associated with the AC line power source. In particular, the power storage adapter may cease drawing power from the AC line power source and begin supplying electrical power from a battery included with the power storage adapter to the portable information handling system.

Abstract: A power storage adapter coupled to a portable information handling system using a variable power bus may receive first battery data from an embedded controller of the portable information handling system. The first battery data may be used by a battery management unit in the power storage adapter for power management of a battery. The power storage adapter may also collect second battery data from other portable information handling systems and send the second battery data back to the embedded controller.

Abstract: A power storage adapter may use a high efficiency charging method when supplying electrical power to a portable information handling system when the power storage adapter is not connected to AC line power. In particular, the power storage adapter may minimize or avoid supplying electrical power when an internal battery of the portable information handling system is in a constant voltage charging regime (or at a given state of charge), in which the electrical power decreases as the state of charge increases.

Abstract: A power storage adapter may use a high efficiency charging method when supplying electrical power to a portable information handling system when the power storage adapter is not connected to AC line power. In particular, when the portable information handling system draws the electrical power below a low load threshold, such as during a low power state, the power storage adapter may avoid supplying electrical power. When an internal battery of the portable information handling system has an SOC less than a recharging state of charge for the internally battery, the power storage adapter may resume supplying power to the portable information handling system.

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 determine whether electrical power supplied by the power storage adapter should be sourced from the AC-DC converter or from the battery based on various operating parameters of the power storage adapter, such the temperature of the power storage adapter, the state of charge of the battery, the amount of electrical power being supplied by the AC-DC converter, or the amount of time that the AC-DC converter has been supplying electrical power. 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.

Abstract: A power storage adapter may use a method for low standby power in a power storage adapter enabled by an associated battery when the power storage adapter is receiving electrical power from an AC line power source and the power storage adapter may have no external load drawing electrical power. In particular, the power storage adapter may avoid drawing electrical power from the AC line power source by using the associated battery to supply its electrical power, which may result in drawing near zero electrical power from the AC line power source.

Abstract: A power storage adapter for portable information handling systems may include a separate battery and intelligent power management functionality. The power storage adapter may be equipped with fewer voltage regulators and boosted charging for improved efficiency. The power storage adapter may output power to a variable power bus, such as USB Type-C.

Abstract: An embedded controller of a portable information handling system may cause electrical power supplied by an external power storage adapter (PSA) and electrical power supplied by an internal battery of the portable information handling system to be combined in order to supply enough electrical power for the information handling system to operate in a particular operating mode. The external power storage adapter may include an AC-DC converter, a separate PSA battery, and intelligent power management functionality. In response to a control signal or other indication from the portable information handling system that the power storage adapter should supply electrical power to the portable information handling system, the power storage adapter may output power sourced from the AC-DC converter, from the PSA battery, or both to a port of the portable information handling system, such as USB Type-C port, over a variable power bus.