# US 11,114,879 B2 · Smart charging method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,879 B2 - Document ID: US11114879B2 - Status: Granted - Kind: B2 - Application number: 16/391,763 - Filed: 2019-04-23 - Published: 2020-10-29 - Granted: 2021-09-07 - Earliest claimed: 2019-04-23 - Assignees: Chen-Source Inc. - Applicants: Chen-Source Inc. - Inventors: Cheng-Jen Lin - Web page: https://patentgrep.com/patent/US11114879B2 ## CPC - H02J 7/62: against overcurrent - H02H 9/02: responsive to excess current {(current limitation for voltage regulators G05F1/573; disconnection after limiting H02H3/025)} - H02J 7/927: {with introduction of pulses during the charging process} - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - 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 smart charging method can supply a charging device with power, and the charging device includes charging regions disposed inside thereof, and each charging region includes sockets for charging mobile electronic devices. The charging device includes a control circuit to perform automatic charging control on the mobile electronic devices plugged into the charging regions. During process of the automatic charging control, inrush current is filtered out, and when the total current required by at least two charging regions is higher than a maximal current supply value, the at least two charging regions take turn to charge for a first charging period; otherwise, the charging regions satisfying the condition, and remaining charging region can take turn to charge for a second charging period until the mobile electronic devices are fully charged. The smart charging method can filter out inrush current and effectively increase the charging efficiency. ## Claims ### Claim 1 A smart charging method, configured to supply a charging device with power through a power socket by using a domestic power source, wherein the charging device comprises a plurality of charging regions disposed inside thereof, and each of the charging regions comprises a plurality of sockets configured to charge a plurality of mobile electronic devices, and the charging device comprises a control circuit configured to perform automatic charging control on the mobile electronic devices plugged in the charging regions, and the smart charging method comprises: (A) turning on a power source of the charging device; (B) waiting for a predetermined period in which an inrush current prevention circuit absorbs inrush current; (C) by using a plurality of current sensors of the control circuit electrically connected to the inrush current prevention circuit, obtaining total current required by the all charging regions; (D) by using a micro control unit electrically connected to the current sensors, determining whether the total current of the all charging regions is higher than a maximal current supply value; when the total current of the all charging regions is higher than a maximal current supply value, (E) repeatedly turning on and off a plurality of overload relays disposed between the control circuit and the charging regions respectively, by a predetermined number of times; (F) resetting the power source by turning off all of the plurality of overload relays, and repeating the steps (A)-(D); when the total current of the all charging regions is not higher than a maximal current supply value, (G) by turning on all of the overload relays by using the micro control unit, supplying the current required by all of the charging regions for charging; (H) determining whether total current of at least two charging regions is higher than the maximal current supply value; when the total current of the at least two charging regions is higher than the maximal current supply value, (I) by controlling the charging regions, performing a charging operation for a first charging period on the charging regions respectively, and repeating the steps (B)-(D); and when the total current of the at least two charging regions is not higher than the maximal current supply value, (J) by controlling the at least two charging regions and remaining charging region, performing a charging operation for a second charging period on the at least two charging regions and the remaining charging region respectively, and repeating the steps (B)-(D). ### Claim 2 (depends on 1) The smart charging method according to claim 1, wherein the predetermined period of the step (B) is in a range of 400 milliseconds (ms) to 500 milliseconds (ms). ### Claim 3 (depends on 1) The smart charging method according to claim 1, wherein the control circuit comprises the current sensors, and the overload relays electrically connected between the current sensors and the charging regions, respectively, and the current sensors and the overload relays are electrically connected to the micro control unit, so as to form the control circuit. ### Claim 4 (depends on 1) The smart charging method according to claim 1, wherein the first charging period is in a range of 40 minutes to 50 minutes. ### Claim 5 (depends on 1) The smart charging method according to claim 1, wherein the second charging period is in a range of 20 minutes to 40 minutes. ### Claim 6 (depends on 1) The smart charging method according to claim 1, wherein the maximal current supply value is in a range of 12 amps to 15 amps.