# US 12,757,944 B2 · Electrical heating module and power supply control method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,757,944 B2 - Document ID: US12757944B2 - Status: Granted - Kind: B2 - Application number: 18/154,034 - Filed: 2023-01-12 - Published: 2023-05-18 - Granted: 2026-10-13 - Earliest claimed: 2020-07-13 - Assignees: Shenzhen Innokin Technology Co., Ltd. - Applicants: Shenzhen Innokin Technology Co., Ltd. - Inventors: Tao Cui; Jianwei Li; Zhengzhan Peng; Tingdong Hu - Web page: https://patentgrep.com/patent/US12757944B2 ## CPC - A24F 40/57: Temperature control - A24F 40/10: Devices using liquid inhalable precursors - H02M 3/1582: {Buck-boost converters (H02M3/1584 takes precedence)} - H05B 1/023: {Industrial applications} - A61M 15/06: Inhaling appliances shaped like cigars, cigarettes or pipes - A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06) - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract Disclosed is a personal vaping device provided with an electrical heating module as an atomizer or heater. The personal vaping device at least includes a power control circuit, which includes a current input terminal, a current input terminal, and a current control module. The power control circuit further includes a power supply control module, a current control module, a voltage modulation module, and a forward and reverse connection current generation module. The microprocessor is configured to control the voltage modulation module and the forward and reverse connection current generation module. The voltage modulation module is configured to regulate a voltage of the DC power supply to a first target voltage and a second target voltage. The forward and reverse connection current generation module is configured to generate a forward connection current and a reverse connection current according to the second target voltage to drive the atomizer or heater for heating. ## Claims ### Claim 1 A power supply control circuit for an electrical heating module of a personal vaping device, comprising: a current input terminal configured to be connected to a direct current (DC) power supply; a current output terminal separated from the current input terminal and configured to be connected to the electrical heating module; and a power supply control module arranged between the current input terminal and the current output terminal, wherein the power supply control module is configured to control connection and disconnection of the current output terminal with the electrical heating module, and to convert a DC from the DC power supply into a supply current having a periodic variation in at least one of a direction, an instantaneous value, or an on-state time, wherein the power supply control module comprises a voltage modulation module, a microprocessor, and a forward and reverse connection current generation module, wherein the microprocessor is configured to control the voltage modulation module and the forward and reverse connection current generation module; and wherein the voltage modulation module is configured to regulate a voltage of the DC power supply to a first target voltage and a second target voltage, and couple the second target voltage to the forward and reverse connection current generation module, wherein the first target voltage is configured to control on and off of the forward and reverse connection current generation module. ### Claim 2 (depends on 1) The power supply control circuit according to claim 1, wherein the power supply control module converts the DC from the DC power supply, the power supply control module is configured to: control the periodic variation of the supply current at a frequency within a range of 300-1000 Hz in a cleaning state, or within a range of 2-200 Hz in a vaping state. ### Claim 3 (depends on 1) The power supply control circuit according to claim 1, wherein the microprocessor is configured to provide an actuation signal to the voltage modulation module and output the actuation signal according to a plurality of preset parameters including a variation range of the instantaneous value and a frequency of the periodic variation, wherein the voltage modulation module is configured to convert the DC flowing from the current input terminal into the supply current by modulating the actuation signal, and to establish a circuit to connect the electrical heating module through the current output terminal, wherein the voltage modulation module comprises a power conversion circuit, wherein the power conversion circuit is configured to modulate a voltage of the DC power supply according to a modulation signal sent by the microprocessor, and to output a boost voltage, a buck voltage, or a pass-through voltage according to the modulation signal. ### Claim 4 (depends on 3) The power supply control circuit according to claim 3, wherein the power conversion circuit comprises a full-bridge circuit including an energy storage inductor and a plurality of switch components, wherein the microprocessor is configured to control the plurality of switch components such that the full-bridge circuit operates as a boost control circuit during a first time interval and operates as a buck circuit during a second time interval different from the first time interval; or the power conversion circuit comprises a boost control circuit and a buck circuit independent of each other. ### Claim 5 (depends on 1) The power supply control circuit according to claim 1, wherein in a duty cycle, the on-state time of the supply current varies. ### Claim 6 (depends on 3) The power supply control circuit according to claim 3, wherein the power supply control module is configured to continuously maintain the supply current in an on state, wherein the power supply control module is configured to reverse a direction of the supply current at least once in a duty cycle to form an AC, wherein a working duration of the AC is less than or equal to a time interval threshold, and wherein the power supply control module is configured to maintain an output energy of the supply current at a preset constant level during each duty cycle. ### Claim 7 (depends on 1) The power supply control circuit according to claim 1, wherein the forward and reverse connection current generation module comprises a first switch control module and a second switch control module, wherein the first switch control module is configured to be switched on during a first time interval, generate a forward connection current according to the second target voltage, and couple the forward connection current to the electrical heating module; and the second switch control module is configured to be switched on during a second time interval, generate a reverse connection current according to the second target voltage, and couple the reverse connection current to the electrical heating module, wherein the first time interval and the second time interval are different time intervals within a duty cycle of the second target voltage, and a sum of the first time interval and the second time interval is not larger than a duration threshold of the duty cycle of the second target voltage. ### Claim 8 (depends on 3) The power supply control circuit according to claim 3, wherein the power conversion circuit comprises a boost control circuit and a buck circuit; the boost control circuit is configured to modulate the voltage of the DC power supply to obtain a first target voltage and a first target current according to a first preset parameter set sent by the microprocessor in a first time range, wherein the first target voltage is higher than the voltage of the DC power supply; and the buck circuit is configured to modulate the first target voltage to obtain a second target voltage and a second target current according to a second preset parameter set sent by the microprocessor in a second time range, wherein the second target voltage is lower than the first target voltage. ### Claim 9 A personal vaping device, comprising: an electrical heating module that is an atomizer configured to atomize electronic cigarette liquid; and a power supply control circuit configured to supply power to the electrical heating module, wherein the power supply control circuit comprises: a current input terminal configured to be connected to a direct current (DC) power supply; a current output terminal separated from the current input terminal and configured to be connected to the electrical heating module; and a power supply control module arranged between the current input terminal and the current output terminal, wherein the power supply control module is configured to control connection and disconnection of the current output terminal with the electrical heating module, and to convert a DC from the DC power supply into a supply current having a periodic variation in at least one of a direction, an instantaneous value, or an on-state time, wherein the power supply control module comprises a voltage modulation module, a microprocessor, and a forward and reverse connection current generation module, wherein the microprocessor is configured to control the voltage modulation module and the forward and reverse connection current generation module; and wherein the voltage modulation module is configured to regulate a voltage of the DC power supply to a first target voltage and a second target voltage, and couple the second target voltage to the forward and reverse connection current generation module, wherein the first target voltage is configured to control on and off of the forward and reverse connection current generation module. ### Claim 10 (depends on 9) The personal vaping device according to claim 9, wherein the power supply control module converts the DC from the DC power supply, the power supply control module is configured to: control the periodic variation of the supply current at a frequency within a range of 300-1000 Hz in a cleaning state, or within a range of 2-200 Hz in a vaping state. ### Claim 11 (depends on 9) The personal vaping device according to claim 9, wherein the microprocessor is configured to provide an actuation signal to the voltage modulation module and output the actuation signal according to a plurality of preset parameters including a variation range of the instantaneous value and a frequency of the periodic variation, wherein the voltage modulation module is configured to convert the DC flowing from the current input terminal into the supply current by modulating the actuation signal, and to establish a circuit to connect the electrical heating module through the current output terminal, wherein the voltage modulation module comprises a power conversion circuit, wherein the power conversion circuit is configured to modulate a voltage of the DC power supply according to a modulation signal sent by the microprocessor, and to output a boost voltage, a buck voltage, or a pass-through voltage according to the modulation signal. ### Claim 12 (depends on 11) The personal vaping device according to claim 11, wherein the power conversion circuit comprises a full-bridge circuit including an energy storage inductor and a plurality of switch components, wherein the microprocessor is configured to control the plurality of switch components such that the full-bridge circuit operates as a boost control circuit during a first time interval and operates as a buck circuit during a second time interval different from the first time interval; or the power conversion circuit comprises a boost control circuit and a buck circuit independent of each other. ### Claim 13 (depends on 9) The personal vaping device according to claim 9, wherein in a duty cycle, the on-state time of the supply current varies. ### Claim 14 (depends on 11) The personal vaping device according to claim 11, wherein the power supply control module is configured to continuously maintain the supply current in an on state, wherein the power supply control module is configured to reverse a direction of the supply current at least once in a duty cycle to form an AC, wherein a working duration of the AC is less than or equal to a time interval threshold, and wherein the power supply control module is configured to maintain an output energy of the supply current at a preset constant level during each duty cycle. ### Claim 15 (depends on 9) The personal vaping device according to claim 9, wherein the forward and reverse connection current generation module comprises a first switch control module and a second switch control module, wherein the first switch control module is configured to be switched on during a first time interval, generate a forward connection current according to the second target voltage, and couple the forward connection current to the electrical heating module; and the second switch control module is configured to be switched on during a second time interval, generate a reverse connection current according to the second target voltage, and couple the reverse connection current to the electrical heating module, wherein the first time interval and the second time interval are different time intervals within a duty cycle of the second target voltage, and a sum of the first time interval and the second time interval is not larger than a duration threshold of the duty cycle of the second target voltage. ### Claim 16 (depends on 11) The personal vaping device according to claim 11, wherein the power conversion circuit comprises a boost control circuit and a buck circuit; the boost control circuit is configured to modulate the voltage of the DC power supply to obtain a first target voltage and a first target current according to a first preset parameter set sent by the microprocessor in a first time range, wherein the first target voltage is higher than the voltage of the DC power supply; and the buck circuit is configured to modulate the first target voltage to obtain a second target voltage and a second target current according to a second preset parameter set sent by the microprocessor in a second time range, wherein the second target voltage is lower than the first target voltage.