# US 12,181,949 B2 · Power management device and management method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,181,949 B2 - Document ID: US12181949B2 - Status: Granted - Kind: B2 - Application number: 17/575,647 - Filed: 2022-01-14 - Published: 2022-11-03 - Granted: 2024-12-31 - Earliest claimed: 2021-04-28 - Assignees: Compal Electronics, Inc. - Applicants: Tsang-Ming Chang; Yi-Hsun Lin; Ching-Ji Liang; Hsun-Hung Wang; Hao-Jung Chiou - Inventors: Tsang-Ming Chang; Yi-Hsun Lin; Ching-Ji Liang; Hsun-Hung Wang; Hao-Jung Chiou - Web page: https://patentgrep.com/patent/US12181949B2 ## CPC - G06F 1/28: Supervision thereof, e.g. detecting power-supply failure by out of limits supervision - G06F 1/3287: by switching off individual functional units in the computer system - G06F 1/266: {Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips} - G06F 1/305: {in the event of power-supply fluctuations} - G06F 1/3212: Monitoring battery levels, e.g. power saving mode being initiated when battery voltage goes below a certain level - G06F 1/3225: of memory devices - H02H 1/0092: {concerning the data processing means, e.g. expert systems, neural networks} - H02H 1/06: Arrangements for supplying operative power {(power supply arrangements in general G05F, H02M)} - H02H 3/08: responsive to excess current (responsive to abnormal temperature caused by excess current H02H5/04) - H02H 3/20: responsive to excess voltage - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H02H: EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS (indicating or signalling undesired working conditions G01R, e.g. G01R31/00, G08B; locating faults along lines G01R31/08; emergency protective devices H01H) ## Abstract A power management device and a management method thereof are provided. The power management device includes a switch, a detection circuit and a controller. The switch receives an external power. The detection circuit receives an internal power and at least one operation power. The detection circuit determines whether at least one of the internal power and the operation power is in a preset specification range or not to generate a protection activate signal. The controller sets a protection flag according to the protection activate signal, and generates a control signal according to the protection flag by executing an application program. The controller transmits the control signal to turn off the switch. ## Claims ### Claim 1 A power management device, comprising: a switch, configured to receive an external power; a battery; a charging circuit, configured to provide an internal power to charge the battery; a detection circuit, configured to: receive the internal power and at least one operation power, determine whether at least one of the internal power and the at least one operation power is in a preset specification range, and generate a protection activate signal in response to having determined that at least one of the internal power and the at least one operation power is outside the preset specification range, wherein the detection circuit is configured to simultaneously determine whether the internal power and the at least one operation power are within the preset specification range; and a controller, coupled to the detection circuit, configured to: set a protection flag according to the protection activate signal; execute an application program to generate a control signal in response to setting of the protection flag determine whether a system, to which the power management device belongs, is in use; in a case where the system is determined to be in use, initiate a shutdown procedure to shut down the system; transmit the control signal to turn off the switch and stop receiving the external power; instruct the battery to enter a shipping mode, based on the protection activate flag being set, by stopping the charging and discharging of the battery; receive a trigger signal different from the protection activate signal; and remove the protection flag when the trigger signal is enabled for longer than a predetermined time period. ### Claim 2 (depends on 1) The power management device according to claim 1, wherein the preset specification range has a first threshold and a second threshold, and the first threshold is greater than the second threshold. ### Claim 3 (depends on 2) The power management device according to claim 2, wherein the detection circuit is configured to enable the protection activate signal when the internal power is lower than the second threshold. ### Claim 4 (depends on 2) The power management device according to claim 2, wherein the detection circuit is configured to enable the protection activate signal when the at least one operation power is greater than the first threshold. ### Claim 5 (depends on 1) The power management device according to claim 1, wherein the controller is configured to store the protection flag in a storage device. ### Claim 6 (depends on 5) The power management device according to claim 5, wherein the storage device is a non-volatile memory. ### Claim 7 (depends on 1) The power management device according to claim 1, wherein the detection circuit is coupled to the battery to receive the internal power, and the detection circuit is configured to receive the at least one operation power from at least one circuit chip. ### Claim 8 (depends on 1) The power management device according to claim 1, wherein the controller is configured to generate the control signal to turn on the switch according to the protection flag that has been removed. ### Claim 9 (depends on 1) The power management device according to claim 1, wherein the switch further configured to provide the external power with the charging circuit, and the charging circuit is configured to generate the internal power according to the external power. ### Claim 10 A power management method, adapted for execution by a power management device, the method comprising: receiving, by a switch of the power management device, an external power; providing, by a charging circuit of the power management device, an internal power to charge a battery of the power management device; receiving, by a detection circuit of the power management device, an internal power and at least one operation power; determining, by the detection circuit, whether at least one of an internal power and at least one operation power is in a preset specification range; generating, by the detection circuit, a protection activate signal in response to having determined that at least one of the internal power and the at least one operation power is outside the preset specification range, wherein the detection circuit is configured to simultaneously determine whether the internal power and the at least one operation power are within the preset specification range; setting, by a controller of the power management device, a protection flag according to the protection activate signal; executing, by the controller, an application program to generate a control signal in response to setting of the protection flag; determining, by the controller, whether a system, to which the power management device belongs, is in use; in a case where the system is determined to be in use, initiating, by the controller, a shutdown procedure to shut down the system; transmitting, by the controller, the control signal to turn off the switch and stop receiving the external power; instructing, by the controller, the battery to enter a shipping mode, based on the protection activate flag being set, by stopping the charging and discharging of the battery; receiving, by the controller, a trigger signal different from the protection activate signal; and removing, by the controller, the protection flag when the trigger signal is enabled for longer than a predetermined time period. ### Claim 11 (depends on 10) The power management method according to claim 10, wherein the preset specification range has a first threshold and a second threshold, and the first threshold is greater than the second threshold. ### Claim 12 (depends on 11) The power management method according to claim 11, wherein generating, by the detection circuit, the protection activate signal in response to having determined that at least one of the internal power and the at least one operation power is outside the preset specification range comprises: enabling, by the detection circuit, the protection activate signal when the internal power is lower than the second threshold. ### Claim 13 (depends on 11) The power management method according to claim 11, wherein generating, by the detection circuit, the protection activate signal in response to having determined that at least one of the internal power and the at least one operation power is outside the preset specification range comprises: enabling, by the detection circuit, the protection activate signal when the at least one operation power is higher than the first threshold. ### Claim 14 (depends on 10) The power management method according to claim 10, further comprising: storing the protection flag in a storage device. ### Claim 15 (depends on 14) The power management method according to claim 14, wherein the storage device is a non-volatile memory. ### Claim 16 (depends on 10) The power management method according to claim 10, further comprising: generating, by the controller, the control signal according to the protection flag that has been removed, and turning on the switch according to the control signal.