# US 2020/0401204 A1 · Dynamic battery power management based on battery internal impedance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0401204 A1 - Document ID: US20200401204A1 - Status: Published application - Kind: A1 - Application number: 16/900,769 - Filed: 2020-06-12 - Published: 2020-12-24 - Earliest claimed: 2017-09-28 - Assignees: Intel Corporation - Applicants: Intel Corporation - Inventors: Naoki Matsumura; Brian C. Fritz; Andy Keates; Alexander B. Uan-Zo-Li - Web page: https://patentgrep.com/patent/US20200401204A1 ## CPC - G06F 1/3212: Monitoring battery levels, e.g. power saving mode being initiated when battery voltage goes below a certain level - G06F 1/305: {in the event of power-supply fluctuations} - G06F 1/3287: by switching off individual functional units in the computer system - Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract An apparatus is provided which comprises: a first circuitry to estimate variation of an internal impedance of a battery; a second circuitry to estimate a high power that the battery can supply for a first time-period, based on the estimated variation of the impedance of the battery; and a third circuitry to facilitate operation of one or more components of the apparatus in accordance with the estimated high power for the first time-period. ## Claims ### Claim 1 (canceled) ### Claim 2 An apparatus comprising: a battery having an internal impedance; a memory to store the internal impedance of the battery; and a fuel gauge to estimate the internal impedance before or during a time when a load operates in an enhanced power mode and draws a relatively high power from the battery compared to a normal mode. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein the load is a processor and wherein the enhanced power mode is a turbo boost mode of operation. ### Claim 4 (depends on 2) The apparatus of claim 2, wherein the fuel gauge reports available power to a power management unit of the load. ### Claim 5 (depends on 2) The apparatus of claim 2, wherein the fuel gauge reads the internal impedance of the battery from the memory and calibrates the read internal impedance to estimate the battery impedance before or during the time when the load operates in the enhanced power mode. ### Claim 6 (depends on 5) The apparatus of claim 5, wherein the fuel gauge calibrates the read internal impedance in view of state of charge of the battery, operating temperature of the battery, age of the battery, and/or recent and long-term usage of history of the battery. ### Claim 7 (depends on 2) The apparatus of claim 2, wherein the fuel gauge estimates the internal impedance on a continuous basis. ### Claim 8 (depends on 2) The apparatus of claim 2, wherein the fuel gauge estimates the internal impedance when the load is about to enter the enhanced mode of operation. ### Claim 9 (depends on 2) The apparatus of claim 2 comprises circuitry to calculate an available peak power based on the estimated internal impedance of the battery and/or a shutdown voltage of the load. ### Claim 10 (depends on 2) The apparatus of claim 2, wherein the fuel gauge receives an indication from the load that the load is about to enter the enhanced mode of operation. ### Claim 11 (depends on 2) The apparatus of claim 2, wherein the fuel gauge is to estimate the internal impedance versus peak power duration, and further estimates available peak power versus peak power duration. ### Claim 12 (depends on 11) The apparatus of claim 11, comprises circuitry to cause the load to operate with the estimated available peak power. ### Claim 13 (depends on 2) The apparatus of claim 2, wherein the fuel gauge is to estimate a plurality of high powers that the battery can respectively supply for a plurality of time-periods, based on a variation of the estimated internal impedance of the battery, and to facilitate operation of the load in accordance with the estimated plurality of high powers for respectively the plurality of time-periods. ### Claim 14 (depends on 2) The apparatus of claim 2, wherein the fuel gauge is to estimate a variation of the internal impedance of the battery with respect to a time during which power drawn from the battery is higher than a threshold value. ### Claim 15 A system comprising: a memory; a processor coupled to the memory; a wireless interface to allow the processor to communicate with another device; and a battery to power the processor, wherein the battery includes a fuel gauge to estimate an internal impedance of the battery before or during a time when the processor operates in an enhanced power mode and draws a relatively high power from the battery compared to a normal mode. ### Claim 16 (depends on 15) The system of claim 15 comprises a circuitry to calculate an available peak power based on the estimated internal impedance of the battery and/or a shutdown voltage of the processor. ### Claim 17 (depends on 15) The system of claim 15, wherein the fuel gauge receives an indication from the processor that the processor is about to enter the enhanced mode of operation. ### Claim 18 (depends on 15) The system of claim 15, wherein the fuel gauge is to estimate the internal impedance versus peak power duration, and further estimates available peak power versus peak power duration. ### Claim 19 (depends on 17) The system of claim 17, wherein the processor comprises a power management unit to facilitate operation of the processor according to the estimated available peak power. ### Claim 20 A machine-readable media having machine executable instructions that when executed cause one or more machines to perform one or more operations comprising: estimate an internal impedance of a battery before or during a time when a processor operates in an enhanced power mode and draws a relatively high power from the battery compared to a normal mode; estimate variation of the internal impedance versus a peak power duration; and cause the processor to operate in view of the estimated variation of the internal impedance. ### Claim 21 (depends on 20) The machine-readable media of claim 20 having machine executable instructions that when executed cause one or more machines to perform one or more operations comprising: estimate an available peak power versus the peak power duration; and cause the processor to further operate in accordance with the estimate available peak power. ### Claim 22 (depends on 21) The machine-readable media of claim 21, having machine executable instructions that when executed cause the one or more machines to perform the one or more operations comprising: read the internal impedance of the battery from a memory; and calibrate the read internal impedance to estimate the battery internal impedance before or during the time when the load operates in the enhanced power mode. ### Claim 23 (depends on 22) The machine-readable media of claim 22, having machine executable instructions that when executed cause the one or more machines to perform the one or more operations comprising calibrate the read internal impedance in view of state of charge of the battery, operating temperature of the battery, age of the battery, and/or recent and long-term usage of history of the battery. ### Claim 24 (depends on 20) The machine-readable media of claim 20, having machine executable instructions that when executed cause the one or more machines to perform the one or more operations comprising estimate the internal impedance on a continuous basis. ### Claim 25 (depends on 20) The machine-readable media of claim 20, having machine executable instructions that when executed cause the one or more machines to perform the one or more operations comprising estimate the internal impedance when the load is about to enter the enhanced mode of operation.